WO2019201119A1

WO2019201119A1 - Front-loading washer and spray system thereof

Info

Publication number: WO2019201119A1
Application number: PCT/CN2019/081885
Authority: WO
Inventors: 吕佩师; 许升; 赵志强; 赵新宇; 田书君
Original assignee: 青岛海尔滚筒洗衣机有限公司
Priority date: 2018-04-16
Filing date: 2019-04-09
Publication date: 2019-10-24
Also published as: JP2021519192A

Abstract

A front-loading washer and a spray system thereof aim to solve the problem of the complex mounting structure of a spray device of a front-loading washer having a circulating spray function and the high manufacturing cost thereof. The front-loading washer comprises a machine body (1), an outer drum (2) fixedly disposed in the machine body (1), an inner drum (3) rotatably disposed in the outer drum (2), a window gasket (5) connected between the machine body (1) and the outer drum (2), and a spray system. The spray system comprises a circulating pump (8), a water outlet tube (9) and a plurality of nozzles (10). The circulating pump (8) is disposed on the machine body (1) or the outer drum (2). A water inlet port of the circulating pump (8) is connected to the outer drum (2), and a water outlet port thereof is connected to the plurality of nozzles (10) respectively by means of the water outlet tube. The plurality of nozzles (10) is disposed on the window gasket (5). When in operation, the circulating pump (8) pumps the wash water in the outer drum (2) to the plurality of nozzles (10), and the plurality of nozzles (10) sprays the wash water into the inner drum (3). The nozzle has a simple mounting structure, thereby retaining the original structure of the outer drum and having a low manufacturing cost.

Description

Drum washing machine and its sprinkler system

Technical field

The invention belongs to the field of household appliances, and particularly provides a drum washing machine and a spraying system thereof.

Background technique

The existing drum washing machine originates from Europe, and mainly includes a box body, an outer tube and an inner tube from the outside to the inside. The working principle of the drum washing machine is similar to that of the hammer hammer hitting the clothes. When working, the inner cylinder rotates under the driving of the driving motor. As the inner cylinder rotates, the laundry is continuously lifted and lowered in the drum, and then lifted and then dropped, and repeated motion is performed. The clothes are washed cleaned by the combination of washing powder and water.

In order to improve the effect of water flushing and rinsing, some drum washing machines are also provided with a circulating spray device. A drum type washing machine disclosed in the patent document of the publication No. CN102482834B, in which a circulation path is provided, one end of the circulation path leads to a bottom end of a water tank (outer tube), and the other end of the circulation path leads to a water tank opening Multiple outlets on the edge. The circulation path can supply wash water from the bottom end of the water tank to the plurality of discharge ports, and then into the drum (inner cylinder) to circulate the laundry.

Although the drum type washing machine disclosed in the patent document of the publication No. CN102482834B has a strong cleaning ability for clothes, the water tank provided with a plurality of discharge ports has a complicated structure and a high production cost.

Accordingly, there is a need in the art for a new drum washing machine to solve the above problems.

Summary of the invention

In scenario one:

In order to solve the above problems in the prior art, in order to solve the problem that the spray device of the existing drum washing machine having the circulating spray function has a complicated installation structure and high production cost, the present invention provides a spray for a drum washing machine. a shower system comprising a case, an outer tube fixedly disposed in the case, an inner tube rotatably disposed in the outer tube, and a connection between the case and the outer tube Sealing the window mat, the spray system includes a circulation pump, an outlet pipe and a plurality of nozzles; the water inlet of the circulation pump leads into the outer cylinder, and the water outlet of the circulation pump passes through the outlet pipe respectively a plurality of nozzles are disposed; the plurality of nozzles are disposed on the sealing window mat. In operation, the circulation pump sends a washing water pump in the outer cylinder to the plurality of nozzles, and the plurality of nozzles will wash Water is sprayed into the inner cylinder.

In a preferred embodiment of the above spray system, the water outlet end of each of the nozzles is arranged in a flat configuration.

In a preferred embodiment of the above spray system, the flat structure comprises a trumpet flat structure or a figure eight flat structure.

In a preferred embodiment of the spray system described above, the plurality of nozzles pass through the sealing window mat and are sealingly coupled to the sealing window mat.

In a preferred embodiment of the above spray system, the plurality of nozzles are disposed at equal intervals along the circumference of the sealing window mat.

In a preferred embodiment of the above spray system, the outlet pipe comprises a plurality of branch lines, each nozzle being connected to one of the branch lines.

In a preferred embodiment of the spray system described above, the outlet pipe includes an annular portion, each nozzle being coupled to the annular portion.

In a preferred embodiment of the above spray system, the water outlet of the circulation pump is also in communication with a drain pipe of the drum washing machine; the outlet pipe is provided with a first cutoff for selectively opening or closing the water outlet pipe a valve; the drain pipe is provided with a second shutoff valve for selectively opening or closing the drain pipe.

In a preferred embodiment of the sprinkler system described above, the sprinkler system further includes a three-way valve, and the water outlet of the circulation pump is selectively in communication with the outlet pipe or the drain pipe by the three-way valve.

Furthermore, the present invention provides a drum washing machine comprising the shower system of any of the above preferred embodiments of the spray system.

It will be understood by those skilled in the art that, in a preferred embodiment of the present invention, the drum washing machine of the present invention is compared with the drum type washing machine disclosed in the patent document of the publication No. CN102482834B, by providing the nozzle on the sealing window mat. Not only is the nozzle mounting structure simpler, but it does not require modifications to the outer cylinder structure. The design of the production mold and the manufacturing process for the outer cylinder is avoided, and the manufacturing cost of the outer cylinder is reduced.

In scenario two:

In order to solve the above problems in the prior art, in order to solve the problem that the spray device of the conventional drum washing machine having the circulating spray function has a complicated installation structure and a high production cost, the present invention provides a spray for a drum washing machine. a shower system comprising a case, an outer tube fixedly disposed in the case, an inner tube rotatably disposed in the outer tube, and a connection between the case and the outer tube Sealing the window mat, the sprinkling system includes a circulation pump, an outlet pipe, and an annular water passage, the water inlet of the circulation pump is open into the outer cylinder, and the water outlet of the circulation pump passes through the outlet pipe and the ring a waterway is connected; the annular waterway is disposed on the sealing window pad, and the annular waterway is provided with a plurality of injection holes; in operation, the circulation pump sends a washing water pump in the outer cylinder to the annular waterway, The plurality of injection holes spray wash water into the inner cylinder.

In a preferred embodiment of the above spray system, each of the injection holes is provided in a flat configuration.

In a preferred embodiment of the above spray system, the injection holes are equally spaced along the direction in which the annular water passage extends.

In a preferred embodiment of the above spray system, the annular water passage is connected or integrally formed with the sealing window mat.

In a preferred embodiment of the spray system described above, the annular water passage is disposed on the inner side and/or the outer side of the sealed window mat.

In a preferred embodiment of the above spray system, the annular water passage is connected or integrally formed with the outlet pipe.

It will be understood by those skilled in the art that in the preferred embodiment of the present invention, the drum washing machine of the present invention is disclosed in the patent document of the publication No. CN102482834B by providing an annular water passage having a plurality of injection holes on the sealing window mat. Compared with the drum type washing machine, not only the installation structure of the annular water passage having the injection holes is simpler, but also the modification of the outer cylinder structure is not required. The design of the production mold and the manufacturing process for the outer cylinder is avoided, and the manufacturing cost of the outer cylinder is reduced.

In option three:

In order to solve the above problems in the prior art, in order to solve the problem that the spray device of the existing drum washing machine having the circulating spray function has a complicated installation structure and high production cost, the present invention provides a spray for a drum washing machine. a washing system, the drum washing machine comprises a box body, an outer tube and an inner tube arranged in order from the outside to the inside, a sealing window pad is arranged between the box body mouth and the outer tube mouth, and a door body is arranged at the box body mouth, The spray system includes a circulation pump, an outlet pipe, an arcuate water channel formed between the door body and the sealing window mat, and a plurality of injection holes communicating with the arc water channel; the inlet of the circulation pump Opening into the outer cylinder, the water outlet of the circulation pump communicates with the arc water channel through the outlet pipe; the plurality of injection holes are all disposed on the sealing window pad, and the circulating pump is in operation A wash water pump in the outer cylinder is sent to the arc water channel, which in turn injects wash water into the inner cylinder.

In a preferred embodiment of the sprinkler system described above, the arcuate water channel is an endless water channel that communicates end to end.

In a preferred embodiment of the above spray system, the sealing window mat is provided with an annular groove facing one end of the door body, and the door body can close the annular groove when the door body is closed and thus form the annular water channel.

In a preferred embodiment of the above spray system, an end of the door body facing the sealing window pad is provided with an annular groove, and the annular groove can be closed by the sealing window pad when the door body is closed And thus forming the annular water channel.

In a preferred embodiment of the above spray system, the injection holes are equally spaced along the direction in which the arcuate water channels extend.

It can be understood by those skilled in the art that, in a preferred technical solution of the present invention, by providing an annular groove on the sealing window pad, a plurality of injection holes communicating with the annular groove are provided on the sealing window pad, so that the door body can be closed when closed The annular groove is closed and thus forms an annular water channel. When the washing water is introduced into the annular water passage, the plurality of injection holes can spray the washing water into the inner cylinder. Therefore, the drum washing machine of the present invention is formed between the sealing window mat and the door body in comparison with the drum type washing machine disclosed in the patent document of the publication No. CN102482834B, and the injection hole is provided on the sealing window mat, and the mounting structure thereof is simpler. There is no need to modify the structure of the outer tube. The design of the production mold and the manufacturing process for the outer cylinder is avoided, and the manufacturing cost of the outer cylinder is reduced. At the same time, the annular groove can be visually observed by the user when the door body is opened, which facilitates the user to clean and clean the annular groove, avoids the blockage of the annular groove, and affects the spraying effect of the drum washing machine.

In option four:

In order to solve the above problems in the prior art, in order to solve the problem that the spray device of the existing drum washing machine having the circulating spray function has a complicated installation structure and high production cost, the present invention provides a spray for a drum washing machine. a shower system, the drum washing machine comprising a box body, an outer tube fixedly disposed in the box body, and an inner tube rotatably disposed in the outer tube, the spray system comprising a circulation pump, a pressure equalizer and a plurality a nozzle; the water inlet of the circulation pump leads into the outer cylinder, the water outlet of the circulation pump is connected with the water inlet of the pressure equalizer; the pressure equalizer includes a plurality of water outlets; Each nozzle is disposed near a front end of the outer cylinder, and each of the nozzles is respectively connected to a water outlet of the pressure equalizer; in operation, the circulation pump sends a washing water pump in the outer cylinder to the nozzle a pressure equalizer that distributes wash water to each of the nozzles in an equal manner to be injected into the inner cylinder; and/or the spray system further includes a plurality of branch pipes, each of which The nozzles are respectively passed through one The branch pipe is in communication with a water outlet of the pressure equalizer.

In a preferred embodiment of the above spray system, the plurality of nozzles are disposed on the sealing window mat, wherein the sealing window mat is disposed between the tank and the outer cylinder.

In a preferred embodiment of the above spray system, the spray system further includes an outlet pipe, and two ends of the outlet pipe are respectively connected to the water outlet of the circulation pump and the water inlet of the pressure equalizer.

It will be understood by those skilled in the art that, in a preferred embodiment of the present invention, the drum washing machine of the present invention is compared with the drum type washing machine disclosed in the patent document of the publication No. CN102482834B, by providing the nozzle on the sealing window mat. Not only is the nozzle mounting structure simpler, but it does not require modifications to the outer cylinder structure. The design of the production mold and the manufacturing process for the outer cylinder is avoided, and the manufacturing cost of the outer cylinder is reduced. Further, the present invention further distributes the washing water pumped by the circulation pump to each nozzle by a pressure equalizer disposed between the circulation pump and the plurality of nozzles, thereby enabling all the nozzles to form a circular water curtain spray. The shower effect makes the clothes in the inner cylinder get better spray, which optimizes the washing effect of the washing machine.

DRAWINGS

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings in which:

Figure 1 is a cross-sectional view of a drum washing machine in accordance with a first aspect of the present invention;

Figure 2 is an enlarged view of a portion A of Figure 1;

Figure 3 is a schematic view showing the structure of the outer cylinder of the first embodiment of the present invention;

Figure 4 is a schematic view showing the spray effect of the drum washing machine in the first embodiment of the present invention;

Figure 5 is a cross-sectional view of the drum washing machine of the second aspect of the present invention;

Figure 6 is an enlarged view of a portion A of Figure 1;

Figure 7 is a schematic view showing the structure of the outer cylinder in the second embodiment of the present invention;

Figure 8 is a schematic view showing the spray effect of the drum washing machine in the second embodiment of the present invention;

Figure 9 is a cross-sectional view of the drum washing machine of the third aspect of the present invention;

Figure 10 is a schematic view showing the cooperation of the door body and the sealing window mat in the third embodiment of the present invention;

Figure 11 is a cross-sectional view taken along line A-A of Figure 10;

Figure 12 is a side view of the sealed window mat of the third aspect of the present invention;

Figure 13 is a cross-sectional view taken along line B-B of Figure 12;

Figure 14 is a schematic view showing the spraying effect of the drum washing machine in the third embodiment of the present invention;

Figure 15 is a front view of the drum washing machine of the fourth aspect of the present invention;

Figure 16 is a cross-sectional view taken along line A-A of Figure 15;

Figure 17 is an enlarged view of a portion B in Figure 16 .

In scenario 1, the list of tags in Figures 1-4:

1. Box body; 2. Outer tube; 3, inner tube; 4. Door body; 5. Sealed window mat; 6. Drain pump; 7. Drain pipe; 8. Circulating pump; 9. Outlet pipe;

In scenario two, the list of tags in Figures 5-8:

1, box body; 2, outer tube; 3, inner tube; 4, door body; 5, sealed window mat; 6, drain pump; 7, drain pipe; 8, circulation pump; 9, outlet pipe; ;101, injection hole.

In scenario three, the list of tags in Figures 9-14:

1, box body; 2, outer tube; 3, inner tube; 4, door body; 41, glass observation window; 5, sealing window pad; 51, water inlet hole; 52, annular groove; 53, injection hole; , drainage pump; 7, drain pipe; 8, circulation pump; 9, outlet pipe; 10, annular waterway.

In scenario four, the list of tags in Figures 15-17:

1. Box body; 2. Outer tube; 3, inner tube; 4. Door body; 5. Sealed window mat; 6. Drain pump; 7. Drain pipe; 8. Circulating pump; 9. Outlet pipe; 11, branch pipe; 12, nozzle.

detailed description

It should be understood by those skilled in the art that the embodiments of the present invention are merely used to explain the technical principles of the present invention and are not intended to limit the scope of the present invention. For example, although the invention has been described in terms of a nozzle having a flat configuration, the nozzle of the present invention may be a nozzle of any other configuration. Those skilled in the art can adjust it as needed to adapt to a specific application, and the adjusted technical solution will still fall within the protection scope of the present invention.

It should also be noted that in the description of the present invention, the terms "installation", "connected", and "connected" are to be understood broadly, and may be, for example, a fixed connection or a The connection is disassembled or connected integrally; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be internal communication between the two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In scenario one:

As shown in FIG. 1, the drum washing machine of the present invention mainly comprises a casing 1, an outer cylinder 2, an inner cylinder 3, a door body 4, a sealing window mat 5, a drain pump 6, and a drain pipe 7. The outer cylinder 2 is fixedly disposed in the casing 1, the inner cylinder 3 is rotatably disposed in the outer cylinder 2, and the sealing window mat 5 is disposed between the casing 1 and the outer cylinder 2. The drain pump 6 and the drain pipe 7 are both disposed in the tank 1, and the water inlet of the drain pump 6 is connected to the inner bottom of the outer cylinder 2, the water outlet of the drain pump 6 is connected to one end of the drain pipe 7, and the drain pipe 7 is additionally connected. One end leads to the outside world. The drain pump 6 can discharge the washing water in the outer cylinder 2 through the drain pipe 7.

In addition, those skilled in the art can understand that when each portion of the drain pipe 7 is lower than the inner bottom end of the outer cylinder 2, those skilled in the art can also omit the drain pump 6 and drain the pump 6 as needed. Replace with a shut-off valve. When the drum washing machine needs to drain, the shut-off valve is opened, so that the washing water in the outer cylinder 2 is automatically discharged from the drain pipe 7 by its own gravity.

Referring to FIG. 1 , the front end of the casing 1 (the left side of the casing 1 in FIG. 1 ) is provided with a tank mouth (not shown), and the front end of the outer cylinder 2 (the left side of the outer cylinder 2 in FIG. 1 ) is provided with The outer cylinder mouth (not shown), the front end of the inner cylinder 3 (the left side of the inner cylinder 3 in Fig. 1) is provided with an inner cylinder mouth (not shown). One end of the sealing window mat 5 is sealingly connected to the edge of the outer cylinder opening, and the other end of the sealing window mat 5 is sealingly connected to the edge of the inner cylinder opening. The door body 4 is pivotally disposed on the casing 1, and the door body can be closed when the door body 4 is closed to prevent the washing water in the outer cylinder 2 from overflowing from the tank body.

With continued reference to FIG. 1, the drum washing machine of the present invention further includes a sprinkler system that mainly includes a circulation pump 8, an outlet pipe 9, and a plurality of nozzles 10. The circulation pump 8 is preferably arranged in the housing 1 and is fixedly connected to the housing 1 . Alternatively, the person skilled in the art can also fixedly connect the circulation pump 8 to the outer cylinder 1 as needed. The water inlet of the circulation pump 8 is passed to the inside of the outer cylinder 2, and preferably, the water inlet of the circulation pump 8 is connected to the bottom end of the outer cylinder 2 through the inlet pipe. Alternatively, the person skilled in the art can also connect the inlet pipe to any position of the outer cylinder 2 under the condition that the inlet pipe is located below the liquid level in the outer cylinder 2 as needed. The water outlet of the circulation pump 8 communicates with the plurality of nozzles 10 through the outlet pipe 9. When the sprinkler system of the present invention is in operation, as shown by the arrow in Fig. 1, the circulation pump 8 feeds the washing water pump in the outer cylinder 2 to the plurality of nozzles 10, and the plurality of nozzles 10 spray the washing water into the inner cylinder 3 for flushing. Clothing. When the inner cylinder 3 is operated at a high speed, the water jetted from the nozzle 10 can quickly pass through the laundry and enter the outer cylinder 2 under the action of centrifugal force and gravity.

As shown in FIGS. 1 to 3, a plurality of nozzles 10 are disposed on the seal window mat 5 at equal intervals around the circumferential direction of the outer tub 2. Alternatively, the skilled artisan may also provide a plurality of nozzles 10 on the sealing window mat 5 at different intervals as needed. Among them, all the nozzles 10 pass through the sealing window mat 5 and are both sealedly connected with the sealing window mat 5 to prevent the washing water in the outer tub 2 from leaking. At the same time, the connection between the nozzle 10 and the sealing window pad 5 can also position the nozzle 10.

Although not explicitly shown in the drawings, in the first embodiment of the invention, the outlet pipe 9 includes an annular portion that is flexibly wrapped around the outside of the sealing window mat 5 to be connected to all of the nozzles 10. In a second embodiment of the invention, the outlet pipe 9 comprises a plurality of branch lines (not shown), each nozzle 10 being connected to a branch line. Also, each branch line is a flexible line so that all of the nozzles 10 can accommodate the vibration of the sealing window mat 5. Further, those skilled in the art can also make the inner diameter of the branch line remote from the circulation pump 8 larger than the inner diameter of the branch line close to the circulation pump 8 as needed, so that the flow rates of all the nozzles 10 are substantially uniform.

As shown in Figs. 1 to 3, the water outlet of each nozzle 10 is directed to the inner cylinder 3 so that water ejected from the nozzle 10 can fall into the inner cylinder 3 to spray the laundry.

As shown in FIG. 4, in order to improve the spraying effect of the sprinkler system on the laundry in the inner cylinder 3, each of the nozzles 10 is provided to be capable of ejecting a fan-shaped water flow or a waterfall-like water flow. As shown in FIGS. 2 and 3, the water outlet end of each of the nozzles 10 is provided in a flat structure, which is preferably a trumpet-like flat structure or a figure-eight flat structure. In other words, the water discharge end of the nozzle 10 is disposed such that the cross section of the water discharge end thereof gradually becomes longer in the direction in which the wash water flows, and the person skilled in the art can selectively make the width of the cross section gradually smaller as needed.

In addition, under the premise that the laundry in the inner cylinder 3 can be sprayed, the person skilled in the art can set the water outlet end of the nozzle 10 to any other feasible shape as needed, for example, honeycomb, round hole, triangle. shape.

It should be noted that the drain pump 6 and/or the circulation pump 8 of the present invention may be any feasible pump such as a gear pump, a vane pump, a peristaltic pump, a centrifugal pump or the like.

Those skilled in the art will appreciate that in another possible embodiment of the invention, the drain pump 6 and the circulation pump 8 can be replaced by one pump. As an example 1, the drain pump 6 is omitted, the water outlet of the circulation pump 8 is communicated with the outlet pipe 9 and the drain pipe 7, respectively, and the outlet pipe 9 is provided with a first shut-off valve for selectively opening or closing it. The drain pipe 7 is configured with a second shutoff valve for selectively opening or closing it. When the drum washing machine performs the spraying operation, the first shutoff valve is opened and the second shutoff valve is closed; when the drum washing machine performs the draining operation, the first shutoff valve is closed and the second shutoff valve is opened. As an example two, the drain pump 6 is omitted, and a three-way valve is provided for the water outlet of the circulation pump 8, so that the water outlet of the circulation pump 8 can be selectively communicated with the water outlet pipe 9 or the drain pipe 7 by means of the three-way valve. Further, those skilled in the art can also enable the three-way valve to simultaneously block the communication between the circulation pump 8 and the outlet pipe 9 and the communication between the circulation pump 8 and the drain pipe 7 as needed.

In summary, the sprinkler system of the present invention ensures that the clothes in the inner cylinder 3 are effectively sprayed, and the nozzles 10 are all disposed on the sealing window mat 5, which not only has a convenient installation structure, but also makes the outer cylinder 2 Maintain the original structure and reduce the production cost of the drum washing machine.

In scenario two:

As shown in FIG. 5, the drum washing machine of the present invention mainly includes a casing 1, an outer cylinder 2, an inner cylinder 3, a door body 4, a sealing window mat 5, a drain pump 6, and a drain pipe 7. The outer cylinder 2 is fixedly disposed in the casing 1, the inner cylinder 3 is rotatably disposed in the outer cylinder 2, and the sealing window mat 5 is disposed between the casing 1 and the outer cylinder 2. The drain pump 6 and the drain pipe 7 are both disposed in the tank 1, and the water inlet of the drain pump 6 is connected to the inner bottom of the outer cylinder 2, the water outlet of the drain pump 6 is connected to one end of the drain pipe 7, and the drain pipe 7 is additionally connected. One end leads to the outside world. The drain pump 6 can discharge the washing water in the outer cylinder 2 through the drain pipe 7.

Referring to FIG. 5, the front end of the casing 1 (the left side of the casing 1 in FIG. 5) is provided with a tank mouth (not shown), and the front end of the outer cylinder 2 (the left side of the outer cylinder 2 in FIG. 5) is provided with The outer cylinder mouth (not shown), the front end of the inner cylinder 3 (the left side of the inner cylinder 3 in Fig. 5) is provided with an inner cylinder mouth (not shown). One end of the sealing window mat 5 is sealingly connected to the edge of the outer cylinder opening, and the other end of the sealing window mat 5 is sealingly connected to the edge of the inner cylinder opening. The door body 4 is pivotally disposed on the casing 1, and the door body can be closed when the door body 4 is closed to prevent the washing water in the outer cylinder 2 from overflowing from the tank body.

With continued reference to FIG. 5, the drum washing machine of the present invention further includes a sprinkler system that primarily includes a circulation pump 8, an outlet pipe 9, and an annular water passage 10. The circulation pump 8 is preferably arranged in the housing 1 and is fixedly connected to the housing 1 . Alternatively, the person skilled in the art can also fixedly connect the circulation pump 8 to the outer cylinder 1 as needed. The water inlet of the circulation pump 8 is passed to the inside of the outer cylinder 2, and preferably, the water inlet of the circulation pump 8 is connected to the bottom end of the outer cylinder 2 through the inlet pipe. Alternatively, the person skilled in the art can also connect the inlet pipe to any position of the outer cylinder 2 under the condition that the inlet pipe is located below the liquid level in the outer cylinder 2 as needed. The water outlet of the circulation pump 8 communicates with the annular water passage 10 through the outlet pipe 9. The annular water passage 10 is disposed on the sealing window mat 5, and the annular water passage 10 is further provided with a plurality of injection holes 101 directed to the inner cylinder mouth. When the sprinkler system of the present invention is in operation, as shown by the arrow in Fig. 5, the circulation pump 8 supplies the washing water pump in the outer cylinder 2 to the annular water passage 10, and the plurality of injection holes 101 spray the washing water into the inner cylinder 3 for flushing. Clothing. When the inner cylinder 3 is operated at a high speed, the water jetted from the injection hole 101 can quickly pass through the laundry and enter the outer cylinder 2 under the action of centrifugal force and gravity.

As shown in FIGS. 5 and 6, the annular water passage 10 may be coupled to the sealing window mat 5 or may be integrally formed with the sealing window mat 5. When the annular water channel 10 and the sealing window mat 5 are connected together, the connection manner may be any feasible connection manner, such as snapping, splicing, welding, and the like. Further, the annular water passage 10 is preferably disposed inside the sealed window mat 5. Alternatively, the person skilled in the art may also arrange the annular water passage 10 on the outer side of the sealing window mat 5 as needed, or provide an annular water passage 10 on the inner side and the outer side of the sealing window mat 5, and connect the two annular water passages 10.

As shown in FIGS. 5 to 7, a plurality of injection holes 101 are provided on the annular water passage 10 at equal intervals around the circumferential direction of the outer tub 2. Alternatively, the skilled person can also arrange the plurality of injection holes 101 at equal intervals on the annular water passage 10 as needed.

In addition, although not shown in the drawings, those skilled in the art can also make the annular water passage 10 and the outlet pipe 9 sealed or integrally formed as needed.

As shown in Figs. 5 to 7, the water outlet of each of the injection holes 101 is directed to the inner cylinder 3 so that water ejected from the injection holes 101 can fall into the inner cylinder 3 to spray the laundry.

As shown in Fig. 8, in order to improve the spraying effect of the sprinkler system on the laundry in the inner cylinder 3, each of the injection holes 101 is provided to be capable of ejecting a fan-shaped water flow or a waterfall-like water flow. As shown in FIGS. 6 and 7, each of the injection holes 101 is provided in a flat structure, which is preferably a trumpet-like flat structure or a figure-eight flat structure. In other words, the injection holes 101 are disposed such that their cross sections gradually become longer in the direction in which the washing water flows, and the person skilled in the art can selectively make the width of the cross section gradually smaller as needed.

Further, under the premise that the laundry in the inner cylinder 3 can be sprayed, those skilled in the art can set the injection holes 101 to any other feasible shape as needed, for example, a honeycomb shape, a circular hole shape, or a triangular shape.

In summary, the sprinkler system of the present invention provides an annular water passage 10 having a plurality of injection holes 101 on the sealing window mat 5 in a case where the laundry in the inner cylinder 3 is effectively sprayed, which is convenient to install. Moreover, the outer cylinder 2 is maintained in the original structure, which reduces the production cost of the drum washing machine.

In option three:

As shown in Fig. 9, the drum washing machine of the present invention mainly comprises a casing 1, an outer cylinder 2, an inner cylinder 3, a door body 4, a sealing window mat 5, a drain pump 6, and a drain pipe 7. The outer cylinder 2 is fixedly disposed in the casing 1, the inner cylinder 3 is rotatably disposed in the outer cylinder 2, and the sealing window mat 5 is disposed between the casing 1 and the outer cylinder 2. The drain pump 6 and the drain pipe 7 are both disposed in the tank 1, and the water inlet of the drain pump 6 is connected to the inner bottom of the outer cylinder 2, the water outlet of the drain pump 6 is connected to one end of the drain pipe 7, and the drain pipe 7 is additionally connected. One end leads to the outside world. The drain pump 6 can discharge the washing water in the outer cylinder 2 through the drain pipe 7.

Referring to FIG. 9, the front end of the casing 1 (the left side of the casing 1 in FIG. 9) is provided with a tank mouth (not shown), and the front end of the outer cylinder 2 (the left side of the outer cylinder 2 in FIG. 9) is provided with The outer cylinder mouth (not shown), the front end of the inner cylinder 3 (the left side of the inner cylinder 3 in Fig. 9) is provided with an inner cylinder mouth (not shown). One end of the sealing window mat 5 is sealingly connected to the edge of the outer cylinder opening, and the other end of the sealing window mat 5 is sealingly connected to the edge of the inner cylinder opening. The door body 4 is pivotally disposed on the casing 1, and the door body can be closed when the door body 4 is closed to prevent the washing water in the outer cylinder 2 from overflowing from the tank body.

9 to 11, the drum washing machine of the present invention further includes a sprinkler system, which mainly includes a circulation pump 8, an outlet pipe 9, an annular water passage 10 formed between the door body 4 and the sealing window pad 5, and A plurality of injection holes 53 communicating with the annular water passage 10. The circulation pump 8 is preferably arranged in the housing 1 and is fixedly connected to the housing 1 . Alternatively, the person skilled in the art can also fixedly connect the circulation pump 8 to the outer cylinder 1 as needed. The water inlet of the circulation pump 8 is passed to the inside of the outer cylinder 2, and preferably, the water inlet of the circulation pump 8 is connected to the bottom end of the outer cylinder 2 through the inlet pipe. Alternatively, the person skilled in the art can also connect the inlet pipe to any position of the outer cylinder 2 under the condition that the inlet pipe is located below the liquid level in the outer cylinder 2 as needed. The water outlet of the circulation pump 8 communicates with the annular water passage 10 through the outlet pipe 9. When the sprinkler system of the present invention is in operation, as shown by the arrow in Fig. 9, the circulation pump 8 supplies the washing water pump in the outer cylinder 2 to the annular water passage 10, and the plurality of injection holes 53 spray the washing water into the inner cylinder 3 for flushing. Clothing. When the inner cylinder 3 is operated at a high speed, the water jet ejected from the injection holes 53 can quickly pass through the laundry and enter the outer cylinder 2 under the action of centrifugal force and gravity.

As shown in FIGS. 10 and 12, a plurality of injection holes 53 are provided on the sealing window pad 5 at equal intervals around the circumferential direction of the sealing window pad 5. Alternatively, the skilled artisan may also provide a plurality of injection holes 53 on the sealing window mat 5 at different intervals as needed. It can be understood by those skilled in the art that under the premise that the plurality of injection holes 53 are equally spaced, the annular water channel 10 can also be a curved water channel that is not connected end to end, for example, two semi-circular arc shaped water channels.

As shown in FIGS. 9 to 11, the door body 4 includes a glass observation window 41 that is convex toward the outer tube 2.

As shown in FIGS. 11 to 13, the sealing window mat 5 is provided with a water inlet hole 51 which is sealingly connected to the water outlet pipe 9. An annular groove 52 communicating with the water inlet hole 51 is provided at one end of the sealing window pad 5 facing the door body 4. When the door body 4 is closed (specifically, the glass observation window 41), the annular groove 52 can be closed and thus the annular water channel 10 can be formed. The water outlet of each of the injection holes 53 provided in the sealing window pad 5 is directed to the inner cylinder 3 so that water ejected from the injection holes 53 can fall into the inner cylinder 3 to spray the laundry.

As shown in Fig. 14, in order to improve the spraying effect of the sprinkler system on the laundry in the inner cylinder 3, each of the injection holes 53 is provided to be capable of ejecting a fan-shaped water flow or a waterfall-like water flow. As shown in FIGS. 10, 12, and 14, each of the injection holes 53 is provided in a flat structure, which is preferably a trumpet-like flat structure or a figure-eight flat structure. In other words, the injection holes 53 are disposed such that the cross section of the water discharge end thereof gradually becomes longer in the direction in which the wash water flows, and the person skilled in the art can selectively make the width of the cross section gradually smaller as needed.

Further, under the premise that the laundry in the inner cylinder 3 can be sprayed, the person skilled in the art can set the injection hole 53 to any other feasible shape as needed, for example, a circular hole shape, a tapered hole shape, a triangle shape. shape.

Although not shown in the drawings, in another embodiment of the present invention, those skilled in the art can also cancel the annular groove 52 on the sealing window pad 5 as needed, and the door body 4 faces the sealing window pad 4 One end is provided with an annular groove. When the door body 4 is closed, the annular groove is closed by the sealing window mat 5 and thus forms the annular water channel 10.

In summary, the annular water channel 10 of the present invention is formed between the door body 4 and the sealing window pad 5. The injection hole 53 is disposed on the sealing window pad 5, and the mounting structure is simple, and the structure of the outer tube 2 is not required to be modified. It is avoided that the production mold and the manufacturing process are separately designed for the outer cylinder 2, and the manufacturing cost of the outer cylinder 2 is reduced.

In option four:

As shown in FIGS. 15 and 16, the drum washing machine of the present invention mainly includes a casing 1, an outer cylinder 2, an inner cylinder 3, a door body 4, a sealing window mat 5, a drain pump 6, and a drain pipe 7. The outer cylinder 2 is fixedly disposed in the casing 1, the inner cylinder 3 is rotatably disposed in the outer cylinder 2, and the sealing window mat 5 is disposed between the casing 1 and the outer cylinder 2. The drain pump 6 and the drain pipe 7 are both disposed in the tank 1, and the water inlet of the drain pump 6 is connected to the inner bottom of the outer cylinder 2, the water outlet of the drain pump 6 is connected to one end of the drain pipe 7, and the drain pipe 7 is additionally connected. One end leads to the outside world. The drain pump 6 can discharge the washing water in the outer cylinder 2 through the drain pipe 7.

15 and 16, the front end of the casing 1 (the left side of the casing 1 in Fig. 15) is provided with a tank mouth (not shown), and the front end of the outer cylinder 2 (the left side of the outer cylinder 2 in Fig. 15) The outer cylinder mouth (not shown) is provided, and the front end of the inner cylinder 3 (the left side of the inner cylinder 3 in Fig. 15) is provided with an inner cylinder mouth (not shown). One end of the sealing window mat 5 is sealingly connected to the edge of the outer cylinder opening, and the other end of the sealing window mat 5 is sealingly connected to the edge of the inner cylinder opening. The door body 4 is pivotally disposed on the casing 1, and the door body can be closed when the door body 4 is closed to prevent the washing water in the outer cylinder 2 from overflowing from the tank body.

15 and 16, the drum washing machine of the present invention further includes a spray system including a circulation pump 8, an outlet pipe 9, a pressure equalizer 10, a plurality of branch pipes 11, and a plurality of nozzles 12. The circulation pump 8 is preferably arranged in the housing 1 and is fixedly connected to the housing 1 . Alternatively, the person skilled in the art can also fixedly connect the circulation pump 8 to the outer cylinder 1 as needed. The water inlet of the circulation pump 8 is passed to the inside of the outer cylinder 2, and preferably, the water inlet of the circulation pump 8 is connected to the bottom end of the outer cylinder 2 through the inlet pipe. Alternatively, the person skilled in the art can also connect the inlet pipe to any position of the outer cylinder 2 under the condition that the inlet pipe is located below the liquid level in the outer cylinder 2 as needed. The water outlet of the circulation pump 8 is communicated through the water outlet 9 and the water inlet of the pressure equalizer 10. Alternatively, those skilled in the art can also omit the water outlet pipe 9 as needed to directly connect the water outlet of the circulation pump 8 with the water inlet of the pressure equalizer 10.

It will be understood by those skilled in the art that the number of branch pipes 11 and nozzles 12 of the present invention is not limited to eight as shown in the drawings, and may be any number, for example, six, nine, ten, or the like.

With continued reference to Figures 15 and 16, the pressure equalizer 10 is preferably disposed within the housing 1 and is fixedly coupled to the housing 1 (e.g., the inner side wall of the housing 1). Those skilled in the art can also make the voltage equalizer 10 fixedly connected to the casing 1 by any feasible connection manner as needed. For example, a snap-fit structure or a fixed structure is provided on the pressure equalizer 10, by which the pressure equalizer 10 is fixed to the case 1. Alternatively, the person skilled in the art can also fixedly connect the pressure equalizer 10 to the outer cylinder 1 as needed. The pressure equalizer 10 includes a plurality of water outlets (not shown). Each of the water outlets of the pressure equalizer 10 is in communication with a nozzle 12 through a branch pipe 11. Alternatively, those skilled in the art can make the pressure equalizer 10 have a spare water outlet as needed to ensure that each nozzle 12 is in communication with a water outlet of the pressure equalizer 10.

When the sprinkler system of the present invention is in operation, as shown by the arrow in Fig. 16, the circulation pump 8 supplies the washing water pump in the outer cylinder 2 to the pressure equalizer 10, and the pressure equalizer 10 is equally distributed through the plurality of branch pipes 11. A plurality of nozzles 12 are given. A plurality of nozzles 12 spray wash water into the inner cylinder 3 to wash the laundry. When the inner cylinder 3 is operated at a high speed, the water jetted from the nozzle 12 can quickly pass through the laundry and enter the outer cylinder 2 under the action of centrifugal force and gravity. It will be understood by those skilled in the art that the pressure equalizer 10 distributes the wash water to the plurality of nozzles 12 in an equal manner so that the water pressure of each of the nozzles 12 is uniform and the amount of water discharged is uniform, so that the plurality of nozzles 12 can The wash water is formed into an annular water curtain and uniformly sprayed into the inner cylinder 3. It should be noted that since the voltage equalizer is a component well known to those skilled in the art, it will not be described too much here.

As shown in FIGS. 16 and 17, a plurality of nozzles 12 are disposed on the seal window mat 5 at equal intervals around the circumferential direction of the outer tub 2. Alternatively, the skilled artisan can also provide a plurality of nozzles 12 on the sealing window mat 5 at different intervals as needed. Among them, all the nozzles 12 pass through the sealing window mat 5 and are both sealedly connected with the sealing window mat 5 to prevent the washing water in the outer tub 2 from leaking. At the same time, the connection between the nozzle 12 and the sealing window mat 5 can also position the nozzle 12.

Further, a person skilled in the art can also arrange a plurality of nozzles 12 at any position near the front end of the outer cylinder 2 as needed, for example, a plurality of nozzles 12 are disposed inside the door body 4, or a plurality of nozzles 12 are disposed at the outer cylinder mouth. At the edge of the.

Although not explicitly shown in the drawings, in a preferred embodiment of the invention, each of the branch tubes 11 is a flexible conduit so that all of the nozzles 12 can accommodate the shock of the sealing window mat 5. Further, those skilled in the art can also make the inner diameter of the branch pipe remote from the circulation pump 8 larger than the inner diameter of the branch pipe close to the circulation pump 8 as needed, so that the flow rates of all the nozzles 12 are substantially uniform.

As shown in Figs. 15 to 17, the water outlet of each of the nozzles 12 is directed to the inner cylinder 3 so that water ejected from the nozzles 12 can fall into the inner cylinder 3 to spray the laundry. Alternatively, a person skilled in the art can also make the nozzle 12 point to the door body 4 under the premise that the plurality of nozzles 12 can spray the washing water into the inner cylinder 3, and then make the washing water by the reflection of the door body 4. The spray enters the inner cylinder 3.

As shown in Fig. 15, in order to improve the spraying effect of the sprinkler system on the laundry in the inner cylinder 3, each of the nozzles 12 is provided to be capable of ejecting a fan-shaped water flow or a waterfall-like water flow. The water outlet end of each of the nozzles 12 is provided in a flat structure, which is preferably a trumpet-like flat structure or a figure-eight flat structure. In other words, the water outlet end of the nozzle 12 is disposed such that the cross section of the water discharge end thereof gradually becomes longer in the direction in which the washing water flows, and the person skilled in the art can selectively make the width of the cross section gradually smaller as needed.

In addition, under the premise that the laundry in the inner cylinder 3 can be sprayed, the person skilled in the art can set the water outlet end of the nozzle 12 to any other feasible shape as needed, for example, honeycomb, round hole, triangle. shape.

In summary, the sprinkler system of the present invention ensures that the clothes in the inner cylinder 3 are effectively sprayed, and the nozzles 12 are all disposed on the sealing window mat 5, which not only has a convenient installation structure, but also makes the outer cylinder 2 Maintain the original structure and reduce the production cost of the drum washing machine. Further, the present invention also distributes the washing water pumped by the circulation pump 8 to each of the nozzles 12 by the pressure equalizer 10 disposed between the circulation pump 8 and the plurality of nozzles 12, thereby enabling all the nozzles 12 to be enabled. The annular water curtain spraying effect is formed, so that the laundry in the inner cylinder 3 is better sprayed, and the washing effect of the washing machine is optimized.

Heretofore, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings, but it is obvious to those skilled in the art that the scope of the present invention is obviously not limited to the specific embodiments. Those skilled in the art can make equivalent changes or substitutions to the related technical features without departing from the principles of the present invention, and the technical solutions after the modifications or replacements fall within the scope of the present invention.

Claims

A sprinkler system for a drum washing machine, the drum washing machine including a case body, an outer tube fixedly disposed in the case body, an inner tube rotatably disposed in the outer tube, and a case connected to the case a sealed window mat with the outer cylinder,

The spray system comprises a circulation pump, an outlet pipe and a plurality of nozzles;

The water inlet of the circulation pump is open to the outer cylinder, and the water outlet of the circulation pump is respectively connected to the plurality of nozzles through the outlet pipe;

The plurality of nozzles are disposed on the sealing window mat. In operation, the circulation pump sends a washing water pump in the outer cylinder to the plurality of nozzles, and the plurality of nozzles spray washing water into the inner nozzle In the tube.
A sprinkler system for a drum washing machine according to claim 1, wherein a water discharge end of each of said nozzles is provided in a flat structure.
A shower system for a drum washing machine according to claim 2, wherein the flat structure comprises a trumpet flat structure or a figure eight flat structure.
A sprinkler system for a drum washing machine according to any one of claims 1 to 3, wherein the plurality of nozzles pass through the sealing window mat and are sealingly connected to the sealing window mat.
A shower system for a drum washing machine according to claim 4, wherein said plurality of nozzles are disposed at equal intervals along a circumference of said sealed window mat.
A sprinkler system for a drum washing machine according to any one of claims 1 to 3, wherein the outlet pipe comprises a plurality of branch pipes, each of which is connected to one of the branch pipes.
A sprinkler system for a drum washing machine according to any one of claims 1 to 3, wherein the outlet pipe comprises an annular portion, and each nozzle is connected to the annular portion.
The sprinkler system for a drum washing machine according to any one of claims 1 to 3, wherein a water outlet of the circulation pump is further connected to a drain pipe of the drum washing machine;

The outlet pipe is provided with a first shutoff valve for selectively opening or closing the outlet pipe; the drain pipe is provided with a second shutoff valve for selectively opening or closing the drain pipe.
A sprinkler system for a drum washing machine according to any one of claims 1 to 3, wherein the sprinkler system further includes a three-way valve, and a water outlet of the circulation pump is provided by the three-way valve Optionally communicating with the outlet pipe or the drain of the drum washing machine.
A drum washing machine, characterized in that the drum washing machine comprises the shower system according to any one of claims 1 to 9.
A sprinkler system for a drum washing machine, the drum washing machine including a case body, an outer tube fixedly disposed in the case body, an inner tube rotatably disposed in the outer tube, and a case connected to the case a sealed window mat with the outer cylinder,

The spraying system comprises a circulation pump, an outlet pipe and an annular waterway.

The water inlet of the circulation pump is open to the outer cylinder, and the water outlet of the circulation pump is connected to the annular water passage through the outlet pipe;

The annular water passage is disposed on the sealing window pad, and the annular water passage is provided with a plurality of injection holes;

In operation, the circulation pump supplies a washing water pump in the outer cylinder to the annular water passage, and the plurality of injection holes spray wash water into the inner cylinder.
A sprinkler system for a drum washing machine according to claim 11, wherein each of said injection holes is provided in a flat structure.
A shower system for a drum washing machine according to claim 12, wherein said flat structure comprises a trumpet flat structure or a figure eight flat structure.
A shower system for a drum washing machine according to claim 12, wherein said injection holes are provided at equal intervals along an extending direction of said annular water passage.
A shower system for a drum washing machine according to any one of claims 11 to 14, wherein the annular water passage is connected or integrally formed with the sealing window mat.
A sprinkler system for a drum washing machine according to claim 15, wherein said annular water passage is disposed inside and/or outside of said sealed window mat.
A shower system for a drum washing machine according to any one of claims 11 to 14, wherein the annular water passage is connected or integrally formed with the outlet pipe.
The sprinkler system for a drum washing machine according to any one of claims 11 to 14, wherein a water outlet of the circulation pump is further connected to a drain pipe of the drum washing machine;

The outlet pipe is provided with a first shutoff valve for selectively opening or closing the outlet pipe; the drain pipe is provided with a second shutoff valve for selectively opening or closing the drain pipe.
A sprinkler system for a drum washing machine according to any one of claims 11 to 14, wherein the sprinkler system further comprises a three-way valve, and the water outlet of the circulation pump is by means of the three-way valve Optionally communicating with the outlet pipe or the drain of the drum washing machine.
A drum washing machine characterized by comprising the shower system according to any one of claims 11 to 19.
A spray system for a drum washing machine, the drum washing machine comprising a box body, an outer tube and an inner tube which are arranged in order from the outside to the inside, and a sealing window pad is arranged between the box body port and the outer tube mouth, the box body There is a door body at the mouth.

The spray system includes a circulation pump, an outlet pipe, an arcuate water passage formed between the door body and the sealing window mat, and a plurality of injection holes communicating with the arcuate water passage;

The water inlet of the circulation pump leads into the outer cylinder, and the water outlet of the circulation pump communicates with the arc water channel through the outlet pipe;

The plurality of injection holes are all disposed on the sealing window mat;

In operation, the circulation pump pumps the wash water in the outer cylinder to the arcuate water channel, which in turn injects wash water into the inner cylinder.
A sprinkler system for a drum washing machine according to claim 21, wherein said arcuate water passage is an endless water passage that communicates end to end.
The shower system for a drum washing machine according to claim 22, wherein an end of the sealing window mat facing the door body is provided with an annular groove, and the door body can close the annular recess when closed The groove and thus the annular channel.
A sprinkling system for a drum washing machine according to claim 22, wherein an end of the door body facing the sealing window mat is provided with an annular groove, and when the door body is closed, the annular recess The trough can be closed by the sealed window mat and thus form the annular water channel.
A shower system for a drum washing machine according to any one of claims 21 to 24, characterized in that each of said injection holes is provided in a flat structure.
A shower system for a drum washing machine according to claim 25, wherein said flat structure comprises a trumpet flat structure or a figure eight flat structure.
A shower system for a drum washing machine according to any one of claims 21 to 24, wherein the injection holes are provided at equal intervals in the extending direction of the arcuate water passage.
The sprinkler system for a drum washing machine according to any one of claims 21 to 24, wherein a water outlet of the circulation pump is further connected to a drain pipe of the drum washing machine;

The outlet pipe is provided with a first shutoff valve for selectively opening or closing the outlet pipe; the drain pipe is provided with a second shutoff valve for selectively opening or closing the drain pipe.
A sprinkler system for a drum washing machine according to any one of claims 21 to 24, wherein said sprinkler system further comprises a three-way valve, said water outlet of said circulation pump being said by said three-way valve Optionally communicating with the outlet pipe or the drain for the drum washing machine.
A drum washing machine, characterized in that the drum washing machine comprises the shower system according to any one of claims 21 to 29.
A sprinkler system for a drum washing machine, the drum washing machine comprising a box body, an outer tube fixedly disposed in the box body, and an inner tube rotatably disposed in the outer tube

Characterizing in that the spray system comprises a circulation pump, a pressure equalizer and a plurality of nozzles;

The water inlet of the circulation pump leads into the outer cylinder, and the water outlet of the circulation pump is connected to the water inlet of the pressure equalizer;

The pressure equalizer includes a plurality of water outlets;

The plurality of nozzles are disposed near a front end of the outer cylinder, and each of the nozzles is respectively connected to a water outlet of the pressure equalizer;

In operation, the circulation pump supplies a wash water pump in the outer cylinder to the pressure equalizer, and the pressure equalizer distributes wash water to each of the nozzles in an equal manner to be injected into the inner cylinder.
A shower system for a drum washing machine according to claim 31, wherein said plurality of nozzles are disposed on a sealing window pad, wherein said sealing window pad is disposed in said case and said outer tube Between; and/or,

The sprinkler system further includes a plurality of branch pipes, each of the nozzles being in communication with a water outlet of the pressure equalizer through one of the branch pipes.
A sprinkler system for a drum washing machine according to claim 32, wherein said plurality of nozzles pass through said sealing window mat and are sealingly coupled to said sealing window mat.
A sprinkler system for a drum washing machine according to claim 33, wherein said plurality of nozzles are disposed at equal intervals along a circumference of said seal window mat.
A shower system for a drum washing machine according to any one of claims 31 to 34, characterized in that the water outlet end of each of the nozzles is provided in a flat structure.
A shower system for a drum washing machine according to claim 35, wherein said flat structure comprises a trumpet flat structure or a figure eight flat structure.
A sprinkler system for a drum washing machine according to any one of claims 31 to 34, wherein the sprinkler system further includes an outlet pipe, and both ends of the outlet pipe are respectively associated with the circulation pump The water outlet is connected to the water inlet of the pressure equalizer.
The sprinkler system for a drum washing machine according to claim 37, wherein the water outlet of the circulation pump is further connected to a drain pipe of the drum washing machine;

The outlet pipe is provided with a first shutoff valve for selectively opening or closing the outlet pipe; the drain pipe is provided with a second shutoff valve for selectively opening or closing the drain pipe.
A sprinkler system for a drum washing machine according to claim 37, wherein said sprinkler system further comprises a three-way valve, said water outlet of said circulation pump being selectively said by said three-way valve The outlet pipe or the drain pipe of the drum washing machine is in communication.
A drum washing machine, characterized in that the drum washing machine comprises the shower system according to any one of claims 31 to 39.