CN104456772B - air purifier - Google Patents

Abstract

The present disclosure relates to an air purifier, including a housing, an air inlet and an air outlet disposed on the housing, an air channel structure located in the housing for communicating the air inlet and the air outlet, and air In the filter device for filtering, the air cleaner further includes a first fan for sucking air into the casing from the air inlet and a second fan for discharging air from the air outlet. The present disclosure proposes an air purifier with a simple structure. By setting the air duct structure between two fans and through the cooperation of the two fans, the air is swirled upwards and finally discharged from the air outlet provided on the upper part of the casing. The air purifier sucks in air through the bottom and discharges the filtered air from the upper part of the casing, so that the indoor air can be effectively circulated to achieve a better filtering effect.

Description

air purifier

technical field

The present disclosure relates to the technical field of household electrical appliances, in particular to an air purifier.

Background technique

With the continuous improvement of the degree of industrialization, the pollution of the environment is becoming more and more serious, especially in some big cities, such as Beijing, Shanghai, Guangzhou, etc., among which, the northern cities are particularly serious. It's very disturbing, but the change in the overall environment makes people helpless. With the aggravation of environmental pollution across the country, smog weather has gradually occurred in some cities in the south. Therefore, people pay more and more attention to the living environment, especially the purification of the air environment around them.

Therefore, it is an important subject for air purification in a space environment.

Contents of the invention

In view of this, the present disclosure proposes an air purifier for purifying air.

In order to achieve the above object, the technical solution adopted in this disclosure is:

An air purifier, comprising a housing, an air inlet and an air outlet arranged on the housing, an air channel structure located in the housing for communicating with the air inlet and the air outlet, and a device for filtering air In the filter device, the air cleaner further includes a first fan for sucking air into the casing from the air inlet and a second fan for discharging air from the air outlet.

Optionally, the first fan is arranged near the air inlet, and the second fan is arranged near the air outlet for accelerating the flow of the air entering the air inlet, and the air duct structure is set Between the first fan and the second fan for guiding the flow direction of air from the air inlet to the air outlet.

Optionally, the air inlet is located at the lower part of the casing, and the air outlet is arranged at the upper part of the casing.

Optionally, the filter device is arranged between the first fan and the air inlet, and the filter device is used to filter the air entering through the air inlet.

Optionally, the filter device is multi-level and has a hollow barrel structure, wherein the air filtered by the filter device flows upward through the hollow position of the filter device.

Optionally, the air cleaner includes an inner casing disposed between the first fan and the second fan, and the air duct structure is disposed between the casing and the inner casing.

Optionally, the air cleaner further includes a driving device disposed in the inner housing, the driving device is used to drive the first fan and the second fan to rotate.

Optionally, the drive device is used to control the rotation speeds of the first fan and the second fan, and control the first fan and the second fan to rotate at the same speed or at different speeds.

Optionally, the first fan and the second fan are also used to cool down the driving device when the air flow is accelerated.

Optionally, the filtering device is arranged in the air duct structure or between the second fan and the air outlet.

Optionally, the air duct structure is configured as an annular air duct, a spiral air duct, several equally divided air ducts with the same structure, or several cylindrical air ducts.

Optionally, the air duct structure has a gradually decreasing air duct width along the air flow direction.

Optionally, the air duct structure includes an air buffer structure connected to the first fan, which is used to relieve the intensity of the airflow entering the air duct and change the flow direction.

Optionally, the airflow formed by the first fan driving the air flows along a first direction, and the airflow formed by the second fan driving the air flows along a second direction.

Optionally, the first fan is a turbo fan, and the second fan is an axial fan.

Optionally, the airflow formed by the air driven by the first fan and the second fan both flows along the second direction.

Optionally, both the first fan and the second fan are axial flow fans.

Optionally, the airflow formed by the first fan driving the air flows along the second direction, and the airflow formed by the second fan driving the air flows along the first direction.

Optionally, the first driving device is an axial fan, and the second driving device is a turbo fan.

Optionally, the airflow formed by the air driven by the first fan and the second fan both flows along the first direction.

Optionally, both the first fan and the second fan are turbofans.

Optionally, the air cleaner further includes an upper cover corresponding to the air outlet and assembled on the top of the housing.

Optionally, the upper cover is provided with grid-shaped or net-shaped air outlet holes, and the air outlet holes have gradually decreasing apertures along the air outlet direction.

Optionally, the upper cover is also provided with a pressure sensor for detecting the load pressure on the upper cover.

Optionally, the air purifier also includes a ventilation ring arranged on the peripheral side of the second fan, the ventilation ring is provided with a number of grid or mesh ventilation holes, and the second fan is also used to The air entering from the ventilation ring is discharged from the air outlet.

Optionally, the fan blade of the second fan includes a first part corresponding to the projected area of the inner casing in the axial direction and a remaining second part, the first part includes a part opposite to the end surface of the inner casing The first edge, the second part includes a second edge corresponding to the end surface of the inner casing; wherein, the distance between the first edge and the end surface of the casing is greater than the distance between the second edge and the The distance between the shell faces.

Optionally, the inclination angle of the first part of the main body is smaller than the inclination angle of the second part of the main body.

Optionally, a recess is provided on a side opposite to the inner casing of the first part.

Optionally, the air cleaner further includes a height adjustment device arranged below the filter device, the height adjustment device is used to adjust the position of the filter device so that the filter device is assembled in the housing or Remove from the housing.

Optionally, a support plate for sealing connection is also provided between the filter device and the first fan, and a through hole is provided on the support plate corresponding to the air suction path of the first fan.

Optionally, the purifier is provided with an indicator light for displaying the status of the filter element.

Optionally, when the filter element is in a healthy state, the indicator light is green;

When the filter element exceeds the healthy use state, the indicator light is yellow;

When the filter element is in a polluted state, the indicator light is red.

The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects. An air purifier with a simple structure is proposed. By arranging the air duct structure between two fans and through the cooperation of the two fans, the air is swirled upwards, Finally, it is discharged from the air outlet on the upper part of the housing. The air purifier sucks in air from below and discharges the filtered air from the upper part of the housing, so that the indoor air can be effectively circulated to achieve a better filtering effect.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is an exploded view of the structure of an embodiment of the air purifier of the present disclosure;

Fig. 2 is a schematic cross-sectional structure diagram of an embodiment of the disclosed air purifier;

Fig. 3 is a schematic cross-sectional structure diagram of another embodiment of the air purifier of the present disclosure;

4 is a cross-sectional view of an embodiment of the air duct structure of the air cleaner of the present disclosure;

5 is a cross-sectional view of another embodiment of the air duct structure of the air cleaner of the present disclosure;

6 is a cross-sectional view of another embodiment of the air duct structure of the air cleaner of the present disclosure;

7 is a cross-sectional view of another embodiment of the air duct structure of the air cleaner of the present disclosure;

Fig. 8 is a structural exploded view of another embodiment of the air purifier of the present disclosure;

Fig. 9 is a structural exploded view of another embodiment of the air purifier of the present disclosure;

Fig. 10 is a structural exploded view of another embodiment of the air purifier of the present disclosure;

Fig. 11 is a structural schematic diagram of an axial flow fan of an air purifier of the present disclosure;

12 is a schematic cross-sectional view of an axial flow fan of an air cleaner of the present disclosure;

13 is a schematic cross-sectional view of an embodiment of an axial flow fan of the air cleaner of the present disclosure;

Fig. 14 is a schematic cross-sectional view of another embodiment of an axial flow fan of the air purifier of the present disclosure;

Fig. 15 is a schematic cross-sectional structure diagram of another embodiment of the air purifier of the present disclosure.

detailed description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

Please refer to Figures 1 to 3, wherein, Figure 1 is a structural exploded view of an embodiment of the air cleaner of the present disclosure; Figure 2 is a schematic cross-sectional structure diagram of an embodiment of the air cleaner of the present disclosure; Figure 3 is an air cleaner of the present disclosure Schematic diagram of the cross-sectional structure of an embodiment of the purifier. The air purifier of the present disclosure includes a housing 11, an air inlet 12 and an air outlet 13 arranged on the housing 11, an air duct structure 35 located in the housing 11 for communicating with the air inlet 12 and the air outlet 13, and an air duct structure 35 located in the housing 11. In addition, the air purifier also includes a base 21 arranged at the bottom of the housing 11 for supporting the housing 11 . The air purifier sucks air from the air inlet 12 through the close fit between the various components in the housing 11, filters it, and then discharges it from the air outlet 13, so as to purify the air within a certain range of activity space, so as to obtain a An environment for healthy living.

Wherein, the air cleaner also includes a first fan 34 and a second fan 36 that cooperate to form a circulating airflow in the casing 11. In the embodiment of the present disclosure, the first fan 34 is arranged at a position close to the air inlet 12 for Accelerate the flow of air entering the air inlet 12, the second fan 36 is arranged at a position close to the air outlet 13 for accelerating the air discharged from the air outlet 13, wherein the air duct structure 35 is arranged on the first fan 34 and the second fan 34 for guiding the flow direction of air from the air inlet 12 to the air outlet 13, the first fan 34 is used to suck the air from the air inlet 12 into the casing 11 and flow into the air duct structure 35, the second fan 36 is used The filtered air is discharged from the casing 11 through the air outlet 13 .

Please refer to FIG. 2 and FIG. 3 , the air purifier of the present disclosure also includes an inner casing 14 provided with a first fan 34 and a second fan 36 , and the air duct structure 35 is located between the casing 11 and the inner casing 14 . Further, as shown in FIG. 2 , the air cleaner also includes a driving device 41 arranged in the inner casing 14, and the driving device 41 is used to drive the first fan 34 and the second fan 36 to rotate and is also used to control the first fan 34 and the second fan 36 to rotate. The rotation speed of the fan 34 and the second fan 36 is such that the first fan 34 and the second fan 36 rotate at the same speed or at different speeds, and the first fan 34 is also used to cool down the driving device 41 when the air flow is accelerated. Referring again to FIG. 2 , in one embodiment of the present disclosure, the driving device 41 is a motor, and the first fan 34 and the second fan 36 are controlled to rotate at the same speed by using a motor. Of course, it is also possible to set a motor and The motor is connected to the first fan 34 and the second fan 36 through different auxiliary connection media, so as to achieve the purpose of different speeds. As shown in FIG. 3 , in yet another embodiment of the present disclosure, the driving device 41 is two motors, and the two motors are connected to the first fan 34 and the second fan 36 respectively, so that the first fan 34 and the second fan 34 The two fans 36 achieve the purpose of the same speed or different speeds, so that the rotation speed of the first fan 34 and the second fan 36 can be controlled according to the needs of the purification environment, so as to adapt to the air purification speed in a certain space. In addition, arranging the driving device 41 in the inner housing 14 of the air cleaner fully utilizes the space in the housing 11 , so that the volume of the air cleaner can be reduced.

Please refer to FIGS. 1 to 3 again. In this disclosure, the second fan 36 is arranged on the upper part of the casing 11, and the second fan 36 is located above the first fan 34. By using the first fan 34 and the second The cooperation of the two fans 35 drives the air flow formed by the upward discharge, which can accelerate the circulation and filtration speed, and can realize the strengthening of wind pressure on the filtered air, so that the air in the space structure can be fully filtered.

In one embodiment of the present disclosure, the filter device 31 is disposed below the first fan 34 and between the first fan 34 and the air inlet 12, the filter device 31 is used to filter the air entering through the air inlet 12, the The filter device 31 is multi-level and has a hollow barrel structure, that is, the filter device 31 has a multi-layer filter structure, so that the multi-level filter layer materials can be replaced according to requirements to filter different environments, and the scope of application is wider. Among them, through The air filtered by the filter device 31 flows upward through the hollow position of the filter device 31 . In this embodiment, the air inlet 12 is arranged on the lower part of the casing 11, further, it can be arranged on the peripheral side or any side of the casing 11, in order to achieve a better filtering effect, the filter device 31 corresponds to the air inlet 12, so that the air flowing into the casing 11 from the air inlet 12 is filtered by the filter device 31 and then enters the air duct structure 35. Of course, in other embodiments of the present disclosure, the filter device 31 does not need to face the air inlet 12 The filter device 31 can be arranged between the first fan 34 and the air inlet 12 so that the filtered air can be sucked into the air duct structure 35 under the action of the first fan 34, wherein the housing 11 corresponds to The position of the air inlet 12 is provided with several air inlet holes (not shown) in the shape of mesh, grid or other arbitrary shapes.

In yet another embodiment of the present disclosure, the filter device 31 may also be arranged in the air duct structure 35 , and the airflow formed under the action of the first fan 34 passes through the air duct structure 35 to filter the air. In another embodiment of the present disclosure, the filter device 31 can also be arranged between the second fan 36 and the air outlet 13, after the first fan 34 sucks the air into the casing 11 from the air inlet 12 and passes through the air duct structure 35 and then flows to the second fan 36 , and then the airflow flows to the filter device 31 through the second fan 36 to filter the air, and finally it is discharged out of the casing 11 through the air outlet 13 .

As shown in Figure 4, in one embodiment of the present disclosure, the air duct structure 35 is set as an annular air duct with a circular radial cross-section. Due to the large cross-sectional area of the annular air duct, the relative wind resistance is small and the air output is large. , so the circular air duct is suitable for rooms with low space height. Further, the air duct structure 35 also includes an air buffer structure 111 connected to the first fan 34, and the air buffer structure 111 is connected between the first fan 34 and the annular air duct, and is used to relieve the air entering the air duct structure 35. The strength of the airflow and change the flow direction so that the guide airflow flows to the second fan 36, so as to change the wind direction and reduce the wind resistance in the air duct; the air buffer structure 111 can be an arc-shaped structure or a funnel-shaped structure, of course the air buffer structure 111 can also be formed by a combination of several inclined surfaces so that the airflow formed by the first fan 34 flows to the second fan 36 as smoothly as possible, thereby reducing the wind resistance in the air duct structure 35 . Further, the air channel structure 35 has a gradually decreasing air channel width d1 along the air flow direction. The air channel width d1 in the present disclosure is the width of the annular channel in the same radial direction, so that the formed ring The air channel structure 35 has a smaller annular channel width as it goes upwards, so that the air pressure of the discharged air increases, and the discharged filtered air reaches a higher height, which can speed up the air circulation in the purification space and accelerate Evolution rate.

As shown in FIG. 5 , in yet another embodiment of the present disclosure, the air duct structure 35 is set as a spiral air duct, and the spiral air duct accelerates the spiral reverse flow to strengthen the disturbance of the air, so that the air can be fully purified. Further, the air duct structure 35 also includes an air buffer structure 111 at the connection with the first fan 34, and the air buffer structure 111 is connected between the first fan 34 and the spiral air duct, and is used to relieve the air entering the air duct structure 35. The strength of the airflow and change the flow direction so that the guide airflow flows to the second fan 36, so as to change the wind direction and reduce the wind resistance in the air duct; the air buffer structure 111 can be an arc-shaped structure or a funnel-shaped structure, of course the air buffer structure 111 can also be formed by a combination of several inclined surfaces so that the airflow formed by the first fan 34 flows to the second fan 36 as smoothly as possible, thereby reducing the wind resistance in the air duct structure 35 . Further, the air channel structure 35 has a gradually decreasing air channel width d2 along the air flow direction, and the air channel width d2 in this disclosure is the width of the spiral channel on the same radial direction, which is set in such a way that the formed The spiral air channel structure 35 has a smaller channel width as it goes upwards, so that the air pressure of the discharged air increases, and the height of the discharged filtered air is higher, which can speed up the air circulation in the purification space and accelerate Evolution rate.

As shown in FIG. 6 , in another embodiment of the present disclosure, the air duct structure 35 is set as several equally divided air ducts with the same structure. The wind can be evenly distributed in the place, the relative wind resistance is small, and the wind speed is fast. Optionally, the air duct structure 35 is set as two or four equally divided air ducts with the same structure to meet customers with different wind speed requirements. Further, the air duct structure 35 also includes an air buffer structure 111 connected to the first fan 34 , and the air buffer structure 111 is connected between the first fan 34 and the equally divided air duct, and is used for relieving the air from entering the air duct structure 35 . The strength of the airflow and change the flow direction so that the guide airflow flows to the second fan 36, so as to change the wind direction and reduce the wind resistance in the air duct; the air buffer structure 111 can be an arc-shaped structure or a funnel-shaped structure, of course the air buffer The structure 111 can also be formed by a combination of several inclined surfaces so that the airflow formed by the first fan 34 flows to the second fan 36 as smoothly as possible, thereby reducing wind resistance in the air duct structure 35 . Further, the air duct structure 35 has a gradually decreasing air duct width d3 along the air flow direction, and the air duct width d3 in the present disclosure is the width of the equally divided air duct channel, so that the formed equal parts The air duct structure 35 has a smaller channel width as it goes upwards, so that the air pressure of the discharged air increases, and the height of the discharged filtered air reaches a higher level, which can speed up the air circulation in the purification space and speed up the evolution rate .

As shown in FIG. 7 , in yet another embodiment of the present disclosure, the air duct structure 35 is configured as several cylindrical air ducts, which reduce the total area of the radial section of the air duct, thereby making As the wind pressure increases, the filtered air exhausted from the air duct structure 35 reaches a higher height, which is suitable for rooms with a higher spatial structure. Optionally, the air duct structure 35 is set as two or four cylindrical air ducts to suit customers with different wind speed requirements. Further, the air duct structure 35 also includes an air buffer structure 111 at the connection with the first fan 34, and the air buffer structure 111 is connected between the first fan 34 and the cylindrical air duct, and is used for relieving air from entering the air duct structure. 35 of the airflow strength and change the flow direction so that the guide airflow flows to the second fan 36, thereby realizing the change of wind direction and reducing the wind resistance in the air duct; the air buffer structure 111 can be an arc-shaped structure or a funnel-shaped structure, of course the air The buffer structure 111 can also be formed by a combination of several inclined surfaces so that the airflow formed by the first fan 34 flows to the second fan 36 as smoothly as possible, thereby reducing wind resistance in the air duct structure 35 . Further, the air channel structure 35 has a gradually decreasing air channel width d4 along the flow direction of the air flow. The air channel width d4 in this disclosure is the radial width of the cylindrical channel, which is set so that the formed The cylindrical air channel structure 35 has a smaller channel width as it goes upwards, so that the air pressure of the discharged air increases, and the discharged filtered air reaches a higher height, which can speed up the purification of the air in the space. Cycle to speed up evolution.

The air purifier of the present disclosure also includes an upper cover 22 corresponding to the air outlet 13 and assembled on the top of the housing 11. The upper cover 22 is provided with a grid, mesh or other air outlet holes 221 of any shape, so that through The filtered air is discharged out of the casing 11 through the air outlet hole 221 . In addition, in order to make the purifier have a greater wind pressure, the air outlet hole 221 is set to have a gradually decreasing aperture along the air outlet direction, so that the discharged air can reach a higher height, which is suitable for the space structure. high environment. Further, the upper cover 22 is also provided with a pressure sensor (not shown) for detecting the load pressure on the upper cover 22 . Correspondingly, the air cleaner also includes an alarm device (not shown) connected to the pressure sensor. In the casing 11, when the pressure sensor detects that the wind pressure on the upper cover 22 is greater than the threshold value, the alarm device will automatically generate an alarm prompt to remind the user that the wind pressure in the air cleaner is too high, so that Users can discover and deal with problems in time, so as to enhance the safety of the air purifier.

Further, the air purifier also includes a ventilation ring 23 arranged on the peripheral side of the second fan 36, and the ventilation ring 23 is provided with a plurality of grids, meshes or other arbitrary-shaped vents (not marked), the ventilation ring 23 can also be integrally formed with the housing 11, and the second fan 36 of the present disclosure is also used to discharge the air entering from the ventilation ring 23 from the air outlet 13, so that the air pressure of the filtered air discharged from the air outlet 13 can be enhanced. Therefore, a higher height can be achieved, the circulation speed in the space structure can be accelerated, and it can be applied to an environment with a high space structure.

Further, the air cleaner also includes a height adjustment device 33 arranged below the filter device 31 and a support plate 32 for sealing connection between the filter device 31 and the first fan 34, the height adjustment device 33 is used to adjust the filter The position of the device 31 is such that the filter device 31 is convenient to be assembled in the housing 11 or disassembled from the housing 11. In this embodiment, when the filter device 31 is assembled, the height adjustment device 33 is adjusted to make the height adjustment device 33 is lower than the top surface of the base 21, the filter device 31 is placed on the position of the height adjustment device 33, and then the height adjustment device 33 is adjusted again so that the filter device 31 protrudes from the top surface of the base 21 and the position of the filter device 31 rises And against the support plate 32, thereby completing the assembly of the filter device 31; when disassembling the filter device 31, adjust the height adjustment device 33 so that the height adjustment device 33 gradually descends and finally retracts in the base 21, so that the filter device 31 is gradually separated from the support plate 32 so that there is an active space between the filter device 31 and the support plate 32, which is convenient for the filter device 31 to be taken out from the housing 11, so as to facilitate regular replacement of the filter element of the filter device 31 or regular cleaning of the filter device 31 deal with. The support plate 32 of the present disclosure is used to seal the connection between the filter device 31 and the first fan 34 , and is also used to slow down the connection between the filter device 31 and the support plate 32 when the filter device 31 is adjusted against the support plate 32 . The connection buffer force between them is beneficial to protect the filter device 31. Wherein, the support plate 32 is provided with a through hole 321 corresponding to the air suction path of the first fan 34 , and the through hole 321 is used for the air filtered by the filter device 31 to flow into the air duct structure 35 under the action of the first fan 34 .

As shown in FIG. 1 , FIG. 2 and FIG. 3 , in one embodiment of the present disclosure, the first fan 34 is used to drive the airflow formed by the air to flow along the first wind direction. The second fan 36 drives air to form an airflow to flow along the second direction. Wherein, it should be noted that the first direction in the present disclosure is the direction perpendicular to the airflow in the air duct main body, and the second wind direction in the present disclosure is the direction along the airflow in the air duct main body. Optionally, the first fan 34 is a turbo fan, and the second fan 36 is an axial fan. Correspondingly, the air outlet 13 is arranged on the top of the housing 11 to form an upward air outlet structure. During the working process of the air purifier, the first fan 34 sucks the air from the air inlet 12 into the housing 11, and after being filtered by the air filter device 31, it spins up and flows to enter the air duct structure 35, and then under the action of the second fan 36, the air The filtered air is discharged from the top of the housing 11; in addition, during this process, since the airflow formed by the first fan 34 flows along the first direction, a fan can be installed between the first fan 34 and the air duct structure 35. The air buffer structure 111 accelerates the flow velocity of the airflow in the air channel structure 35 and reduces wind resistance. Of course, the present disclosure is not limited to the turbo fan and the axial fan, and any structure capable of driving the airflow in the first direction or the second direction is applicable to the air cleaner in this embodiment.

As shown in FIG. 8 , in yet another embodiment of the present disclosure, the airflow formed by the first fan 34 and the second fan 36 for driving air flows along the second direction. In this embodiment, both the first fan 34 and the second fan 36 are axial flow fans. During the working process of the air cleaner, the first fan 34 sucks the air from the air inlet 12 into the casing 11 and filters it through the air filter device 31. Then it flows upwards to enter the air duct structure 35 , and then the filtered air is discharged from the top of the housing 11 to the outside of the housing 11 under the action of the second fan 36 . Of course, the present disclosure is not limited to the axial flow fan, and the structure capable of driving the airflow in the second direction is applicable to the air cleaner in this embodiment.

As shown in FIG. 9 , in yet another embodiment of the present disclosure, the first fan 36 is used to drive the airflow formed by the air to flow along the second direction; the second fan 34 is used to drive the airflow formed by the air to flow along the first direction . Optionally, the first fan 34 is an axial fan, and the second fan 36 is a turbo fan. Since the second fan 36 is a turbo fan, the air outlet 13 is correspondingly arranged on the upper side of the casing 11 and corresponds to the air outlet direction of the second fan 36. Of course, the setting of the air outlet 12 in this embodiment does not Not limited thereto, a guide channel can also be provided around the second fan 34 to change the direction of the discharged airflow, and the shape of the guide channel can be set to any shape according to the requirement of the exhaust direction. During the working process of the air purifier, the first fan 34 sucks the air from the air inlet 12 into the housing 11, passes through the air filter device 31 and then flows upwards to enter the air duct structure 35, and then under the action of the second fan 36, the air will pass through The filtered air is exhausted from the upper side of the housing 11 to the outside of the housing 11 . Of course, the present disclosure is not limited to the turbo fan and the axial flow fan, and the structure capable of driving the airflow in the first direction or the second direction is applicable to the air cleaner of the present disclosure.

As shown in FIG. 10 , in yet another embodiment of the present disclosure, the airflow formed by driving the air from the first fan 34 and the second fan 36 all flows along the first direction. Optionally, both the first fan 34 and the second fan 36 are turbofans. Because the first fan 34 and the second fan 36 are turbofans, an air buffer structure 111 can be set between the first fan 34 and the air duct structure 35 to accelerate the flow velocity of the airflow in the air duct structure 35 and reduce wind resistance; The second fan 36 is a turbo fan. Correspondingly, the air outlet 13 is disposed on the upper side of the casing 11 and corresponds to the air outlet direction of the second fan 36 . Of course, the setting of the air outlet 12 in this embodiment is not limited to this, and the direction of the discharged airflow can also be changed by setting a guide channel around the first fan 34. The shape of the guide channel can be set to any desired direction according to the exhaust direction shape. During the working process of the air purifier, the first fan 34 sucks the air from the air inlet 12 into the housing 11, and after being filtered by the air filter device 31, it spins up and flows to enter the air duct structure 35, and then under the action of the second fan 36, the air The filtered air is discharged out of the casing 11 from the upper peripheral side of the casing 11 . Of course, the present disclosure is not limited to the turbofan, and the structure capable of driving the airflow in the first direction is applicable to the air purifier of the present disclosure.

As shown in Figures 11 to 14, in the embodiment where the second fan 36 is suitable for an axial flow fan, the second fan includes a hub 361 and a fan blade 362 assembled on the peripheral side of the hub 361, and the fan blade 362 includes an inner shell The first part 3621 corresponding to the projected area of the body 14 in the axial direction and the remaining second part 3622. The first part 3621 includes a first edge 3621A opposite to the end face 141 of the inner casing, and the second part 3622 includes a first edge 3621A opposite to the end face of the inner casing. 141 corresponding to the second edge 3622A; wherein, the distance H between the first edge 3621A and the end face 14 of the housing is greater than the distance h between the second edge 3622A and the end face 14 of the housing, so that the distance between the fan and the inner shell is increased. The space between the bodies 14 increases the air intake space to achieve a better filtering effect. As shown in FIG. 13, optionally, the inclination angle of the main body of the first part is smaller than the inclination angle of the main body of the second part. In short, the first edge 3621A of the first part 3621 is rolled up to form a certain twist angle. Such arrangement increases the space between the fan blade 362 and the inner housing 14 and at the same time ensures that the contact area between the fan blade 362 and the air remains unchanged. As shown in FIG. 14 , optionally, a concave portion 363 is provided on the opposite side of the first portion 3621 to the inner casing 14 to increase the air intake space between the fan blade 362 and the inner casing 14 .

In the present disclosure, the air purifier is also provided with an indicator light (not shown) for displaying the usage status of the filter element (not shown) of the filter device 31 . Wherein, when the filter element is in a healthy use state, the indicator light is green; when the filter element exceeds the healthy use state, the indicator light is yellow; when the filter element is polluted, the indicator light is red. Such setting enables the user to know the usage status of the filter element of the filter device 31 in time, so as to replace the filter element in time to achieve a better filtering effect.

As shown in FIG. 15 , in yet another embodiment of the present disclosure, the first fan 34 is arranged on the upper part of the housing 11 , and the first fan 34 is arranged above the second fan 36 , corresponding to the air inlet 12 It is arranged on the top of the housing 11 or on the peripheral side of the upper part of the housing 11, the air outlet 13 is arranged on the lower part of the housing 13, and the filter device 31 can be arranged between the first fan 34 and the air inlet 12, in the air duct structure 35 , between the second fan 36 and the air outlet 13, the structure thus formed causes air to be sucked into the housing 11 from the upper part of the housing and then the filtered air is discharged from the lower part of the housing 11, thereby forming a downward flow of air and filtering device. Wherein, the first fan 34 and the second fan 36 may be one of an axial flow fan and a turbo fan.

In the embodiment of the present disclosure, after the air purifier is powered on and the switch is turned on, the first fan 34 sucks the air from the air inlet 12, and the sucked air is filtered by the filter device 31 and then is spun up and flowed by the first fan 34, and then passes through the air duct structure 35 reaches the second fan 36, and finally the second fan 36 discharges the filtered air from the air outlet 13, so that the continuous circulation will gradually purify the air in a certain space, and finally make the air reach the standard of a healthy living environment.

In addition, it should be noted that the "first", "second" and "third" mentioned in this embodiment do not represent absolute distinctions in structure or function, but are only for the convenience of description.

This disclosure proposes an air purifier with a simple structure. The air duct structure is arranged and two fans located in the vertical direction are arranged together to make the air flow upwards and finally be discharged from the air outlet arranged at the top. The air purifier inhales air through the bottom and discharges the filtered air from the top, so that the indoor air can be effectively circulated to achieve a better filtering effect, thereby creating a beautiful living space.

Other embodiments of the disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, and these modifications, uses or adaptations follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not disclosed in the present disclosure . The specification and examples are to be considered exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It should be understood that the present disclosure is not limited to the precise constructions which have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (31)

1. An air cleaner, characterized in that it comprises a housing, an air inlet and an air outlet arranged on the housing, an air channel structure located in the housing for communicating with the air inlet and the air outlet As well as a filtering device for filtering air, the air cleaner further includes a first fan for sucking air into the casing from the air inlet and a second fan for discharging air from the air outlet; The air cleaner also includes an inner casing arranged between the first fan and the second fan, and the air duct structure is arranged between the casing and the inner casing. 2. The air purifier according to claim 1, wherein the first fan is arranged at a position close to the air inlet for accelerating the air that flows into the air inlet, and the second fan is arranged at Near the position of the air outlet, the air duct structure is disposed between the first fan and the second fan for guiding the flow direction of air from the air inlet to the air outlet. 3. The air cleaner according to claim 1 or 2, wherein the air inlet is located at the lower part of the housing, and the air outlet is arranged at the upper part of the housing. 4. The air purifier according to claim 1, wherein the filter device is arranged between the first fan and the air inlet, and the filter device is used to filter air entering through the air inlet. Air. 5. The air purifier according to claim 4, wherein the filter device is multi-level and has a hollow barrel structure, wherein the air filtered by the filter device passes through the hollow position of the filter device upwards flow. 6. The air cleaner according to claim 1, characterized in that, the air cleaner further comprises a driving device arranged in the inner casing, the driving device is used to drive the first fan and the The second fan rotates. 7. The air purifier according to claim 6, wherein the driving device is used to control the speed of the first fan and the second fan, and to control the speed of the first fan and the second fan at the same time. Rotate at different speeds or at different speeds. 8. The air purifier according to claim 6, wherein the first fan and the second fan are also used to cool down the driving device when the air flow is accelerated. 9 . The air purifier according to claim 1 , wherein the filtering device is arranged in the air duct structure or between the second fan and the air outlet. 10. The air purifier according to claim 1, wherein the air duct structure is configured as an annular air duct, a spiral air duct, several equally divided air ducts with the same structure, or several cylindrical air ducts. 11. The air purifier according to claim 1 or 10, characterized in that, the air duct structure has a gradually decreasing air duct width along the air flow direction. 12. The air purifier according to claim 11, wherein the air duct structure includes an air buffer structure connected to the first fan for relieving the intensity of the airflow entering the air duct structure and changing the flow direction. 13 . The air purifier according to claim 1 , wherein the airflow formed by the first fan driving the air flows along a first direction, and the airflow formed by the second fan driving the air flows along a second direction. 14 . 14. The air purifier according to claim 13, wherein the first fan is a turbo fan, and the second fan is an axial fan. 15. The air purifier according to claim 1, characterized in that, the airflow formed by driving the air from the first fan and the second fan both flows in the second direction. 16. The air purifier according to claim 15, characterized in that, both the first fan and the second fan are axial flow fans. 17. The air purifier according to claim 1, wherein the airflow formed by the first fan driving the air flows along the second direction, and the airflow formed by the second fan driving the air flows along the first direction . 18. The air purifier according to claim 17, wherein the first fan is an axial fan, and the second fan is a turbo fan. 19. The air purifier according to claim 1, characterized in that, the airflow formed by driving the air from the first fan and the second fan both flows in a first direction. 20. The air purifier according to claim 19, wherein the first fan and the second fan are both turbofans. 21. The air cleaner according to claim 1, further comprising an upper cover corresponding to the air outlet and assembled on the top of the casing. 22. The air purifier according to claim 21, wherein the upper cover is provided with grid-shaped or mesh-shaped air outlet holes, and the air outlet holes have a gradually decreasing aperture along the air outlet direction . 23. The air cleaner according to claim 21 or 22, characterized in that a pressure sensor is further provided on the upper cover for detecting the load pressure on the upper cover. 24. The air purifier according to claim 1, characterized in that, the air purifier further comprises a ventilation ring arranged around the second fan, and the ventilation ring is provided with several grids or mesh The second fan is also used to discharge the air entering from the ventilation ring through the air outlet. 25. The air cleaner according to claim 14 or 16, wherein the blade of the second fan comprises a first part corresponding to the projected area of the inner casing in the axial direction and a remaining second part , the first portion includes a first edge opposite to the end surface of the inner casing, and the second portion includes a second edge corresponding to the end surface of the inner casing; wherein, the first edge and the shell The distance between the end faces of the body is greater than the distance between the second edge and the end faces of the housing. 26. The air cleaner according to claim 25, wherein the inclination angle of the first part body is smaller than the inclination angle of the second part body. 27. The air cleaner according to claim 25, characterized in that, a recess is provided on a side of the first part opposite to the inner casing. 28. The air purifier according to claim 1, characterized in that, the air purifier further comprises a height adjustment device arranged below the filter device, and the height adjustment device is used to adjust the position of the filter device To make the filter device be assembled in the housing or disassembled from the housing. 29. The air purifier according to claim 1, characterized in that, a support plate for sealing connection is also provided between the filter device and the first fan, and the support plate corresponds to the first fan. A through hole is arranged on the air suction path. 30. The air purifier according to claim 1, characterized in that the air purifier is provided with an indicator light for displaying the use status of the filter element of the filter device. 31. The air purifier according to claim 30, characterized in that, when the filter element is in a healthy state of use, the indicator light is green; When the filter element exceeds the healthy use state, the indicator light is yellow; When the filter element is in a polluted state, the indicator light is red.