WO2006001577A1

WO2006001577A1 - Energy saving toilet bowl system recycling wash water

Info

Publication number: WO2006001577A1
Application number: PCT/KR2005/000785
Authority: WO
Inventors: Sang Ho Lim
Original assignee: Mool Sarang Co., Ltd
Priority date: 2004-03-20
Filing date: 2005-03-18
Publication date: 2006-01-05

Abstract

The present invention relates to receiving wash water used in a wash stand and using the same as wash water of a toilet bowl. The energy saving toilet bowl system recycling wash water comprises: a drain connecting unit for connecting a drain of a wash basin to the front end of a water storage tank of a toilet bowl by a connecting pipe; a filter unit formed on the end of the connecting pipe located inside the water storage tank; a dividing unit for dividing the inside of the water storage tank by a single or plurality of dividing plates; an on-off valve unit for draining flush water in a storage space divided by a partition; and a water supply valve unit for draining flush water supplied from the outside. The energy saving toilet bowl system recycling wash water enables conservation of flush water since the wash water to be disposed of is recirculated to a water storage tank of the toilet bowl and reused by a rather simple construction, provides the effect of improving water quality and preventing environmental contamination since emissions of contaminated water to be disposed of are reduced, along with the effect of saving water resources through recycling of wash water, allows a user to obtain economic gain through energy saving, and prevents the congestion or the like of a sewer because various kinds of impurities or the like can be filtered and removed using a filter, thereby enabling more efficient use.

Description

ENERGY SAVING TOILET BOWL SYSTEM RECYCLING

WASH WATER Technical Field [1] The present invention relates to receiving wash water used in a wash stand and using the same as wash water of a toilet bowl, and more particularly, to an energy saving toilet bowl system capable of recycling wash water which enables efficient use of water resources since the wash water disposed of from the wash stand is recycled as wash water of the toilet bowl, provides the effect of improving water quality and preventing environmental pollution by the reduction of sewage discharge, and prevents the congestion or the like of a sewer by various filters, by forming a connection between the drain of the wash stand and the front end of the storage tank via a pipe, forming a filter unit on the flow path of wash water provided from the wash stand, and forming a water supply valve unit, a flush water control unit and divided storage spaces in the storage tank. [2] Background Art [3] Recently, concern has been a growing over the continuing exhaustion of water resources resulting from water shortages. In response, each country has actively recommended people to save water, and as a result, public awareness of water con¬ servation has been raised, and many ways of saving water have been suggested. [4] Among such water saving methods, in the case of using a toilet bowl or wash basin provided in a toilet, there has been the problem of unnecessarily wasting a large amount of water through excessive use of water. In particular, the fact is that, for the purpose of disposing of excretions like urine and feces, a large amount of water, ap¬ proximately 5 to 11, is used to dispose of excretions. [5] The drainage structure of the aforementioned toilet bowl and wash basin will be described. As shown in FlG.1, a wash stand 200 comprises a main body 201 coupled to the wall of a bathroom, a water supply pipe 202 for supplying water to the main body 201, a water supply valve 203 installed to supply water to the main body 201, and a drain 204 coupled to the underside of the main body 201 for draining used wash water contained in the main body 201. [6] In addition, the toilet bowl is divided into a defecation section 210 upon which a user sits and a water storage tank 211 storing flush water for flushing the inside of the defecation section 210. [7] The water storage tank 211 comprises a water tank 213 for storing water supplied from an external water supply pipe 212 (hereinafter, stored water is referred to as wash water), a water supply valve unit 214 installed inside the water tank 213, serving to control the supply of water and controlling supplied water to maintain a certain water level, and a flush water control unit 215 installed inside the water tank 213 for supplying/cutting off stored water to the defecation section 210. [8] The aforementioned water supply valve unit 214 is coupled to the water supply pipe 212 to control water supply. That is, the water supply valve unit 214 is controlled by a float connected and coupled to the water supply valve unit 214 and rotating in a lon¬ gitudinal direction via buoyancy on supplied water. [9] Further, flush water is supplied into the water storage tank 211 by the water supply valve unit 214. If the supplied flush water exceeds a certain water level, surplus water is drained to a sewer via a separate drain 216. [10] The wash water and flush water drained through the wash stand 200 and the defecation section 210 are drained to the sewer via separate drain bodies. [11] Thus, since the sewage water drained through the wash stand and the toilet bowl each having a separate outlet channel is very large in amount, a self-rescue measure, like putting a brick into the water tank, has been used in ordinary homes in order to help to slightly reduce water consumption. [12] Disclosure of Invention Technical Problem [13] However, in this method, the amount of water in the water tank is reduced in direct proportion to the volume of the brick placed therein. Hence, the problem arises that the pressure of water going down the toilet bowl is dropped to be unable to dispose of excretions cleanly, and thus this method cannot significantly reduce water consumption. [14] Moreover, besides the above-stated primitive flush water saving method, various physical apparatuses and mechanical means and so on have been employed to attempt to save water. But, they involve the problems that the water saving means requires an unnecessarily complex construction or the flushing pressure of water discharged by the water saving means is lowered or the like. Due to these problems, effective water saving and the maintenance of flushing pressure cannot be satisfied simultaneously. Technical Solution [15] Accordingly, it is an object of the present invention to overcome those prior art problems and provide an energy saving toilet bowl system recycling wash water, which enables the saving of flush water since the wash water to be disposed of is re- circulated to a water storage tank of the toilet bowl and reused by a rather simple con- struction, provides the effect of improving water quality and preventing environmental pollution since emissions of contaminated water to be disposed of are reduced, along with the effect of conserving water resources through recycling of wash water, allows a user to obtain economic gain through energy saving, and prevents the congestion or the like of a sewer because various kinds of impurities or the like can be filtered and removed using a filter, thereby enabling more efficient use. Advantageous Effects [16] The energy saving toilet bowl system according to the present invention comprises: a drain connecting unit for connecting a drain of a wash basin to the front end of a water storage tank of a toilet bowl by a connecting pipe; a filter unit formed on the end of the connecting pipe located inside the water storage tank; a dividing unit for dividing the inside of the water storage tank by a single or plurality of dividing plates; an on-off valve unit for draining flush water in a storage space divided by a partition; and a water supply valve unit for draining flush water supplied from the outside. [17] Brief Description of the Drawings [18] FlG.1 is a sectional view showing a general drain connection diagram of a wash stand and a toilet bowl; [19] F1G.2 is a sectional view showing a connection state between a water storage tank of a water saving toilet bowl and a wash stand according to the present invention; [20] FlG.3 is an enlarged perspective view of a filter unit of the water storage tank according to the present invention; [21] F1G.4 is an exploded perspective view of a connecting pipe according to the present invention; [22] F1G.5 is a sectional view of a coupling state of the connecting pipe of F1G.4; [23] FlGs.6 and 8 are views of an operating state of the water storage tank according to the present invention, in which [24] F1G.6 is a view of a flushed state according to the drainage of wash water and flush water, [25] F1G.7 is a state diagram of flush water that has been drained out of the storage tank, and [26] FlG.8 is a state diagram of wash water and flush water that is being supplied into the storage tank; [27] F1G.9 is a view of another embodiment of the filter unit of the connecting pipe according to the present invention; [28] FlGs.10 to 12 are views of another embodiment of the water storage tank of the water saving toilet bowl according to the present invention, in which [29] FlG.10 is a state diagram of water that has been supplied separately by a partition in the storage tank, [30] FlG.11 is a state diagram of flush water that is being drained out of the storage tank, and [31] FlG.12 is a state diagram of flush water being supplied into divided spaces in the storage tank; [32] FlGs.13 and 14 are views of still another embodiment of the water storage tank of the water saving toilet bowl according to the present invention, in which [33] FlG.13 is a state diagram of water that has been supplied separately by a partition in the storage tank, and [34] FlG.14 is a state diagram of water that is being supplied separately by a partition in the storage tank, and [35] FlGs.15 to 17 are views of yet still another embodiment of the water storage tank of the water saving toilet bowl according to the present invention, in which [36] FlG.15 is a state diagram of water that is being supplied separately by a partition in the storage tank, [37] FlG.16 is a state diagram of flush water being supplied into divided spaces in the storage tank, and [38] FlG.17 is a state diagram of flush water that is being drained out of the storage tank; [39] FlG. 18 is another embodiment of FlGs.lOa to 10c; [40] FlGs.19 and 20 are enlarged views of the partition according to the embodiments of the water saving water storage tank of the present invention, in which [41 ] FlG.19 is a front view of the partition, and [42] F1G.20 is a side sectional view of the partition; [43] F1G.21 is an enlarged view showing a water supply valve unit according to the present invention; and [44] FlGs.22 and 23 are views of another embodiment of divided spaces for storing wash water supplied to the water saving water storage tank according to the present invention, in which [45] F1G.22 is a sectional view of a wash water storage space separately connected to one side of the water storage tank, and [46] F1G.23 is a sectional view of a flush water storage tank separately connected to the rear side of the water storage tank. [47] *Explanation of Reference Numerals for the Main Parts of the Drawings* [48] 10: wash stand 20: defecation section [49] 32: water supply pipe 40: connecting pipe [50] 51 : water tank 60: filter unit [51] 70: water supply valve unit 80: wash water control unit [52] 90: filter unit 100: inlet pipe [53] 111: first storage chamber 112: second storage chamber [54] 120: dividing plate 145: auxiliary partition [55] 150: dividing plate 160: tank Best Mode for Carrying Out the Invention [56] BEST MODE FOR CARRYING OUT THE INVENTION [57] To achieve the above objects, the present invention has the following charac¬ teristics. [58] According to the present invention, there is provided an energy saving toilet bowl system, comprising: a drain connecting unit for connecting a drain of a wash basin to the front end of a water storage tank of a toilet bowl by a connecting pipe; a filter unit formed on the end of the connecting pipe located inside the water storage tank; a dividing unit for dividing the inside of the water storage tank by a single or plurality of dividing plates; an on-off valve unit for draining flush water in a storage space divided by a partition; and a water supply valve unit for draining flush water supplied from the outside. [59] In the present invention thus constructed, wash water used in a wash stand is supplied to the water storage tank of the toilet bowl, and contaminants of the supplied wash water are filtered by the filter unit and the filtered water is used as flush water. [60] Furthermore, the water supply valve unit can reduce water usage to a large extent because it allows flush water for flushing a defecation section to maintain the minimum water level capable of flushing the defection section, the flush water being only formed of recycled water or being formed of a mixture of recycled water and newly supplied water. [61] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. [62] Embodiment 1 [63] FTG.2 is a sectional view showing a connection state between a water storage tank and a wash stand according to the present invention. [64] Referring to FTG.2, the water storage tank has a connecting pipe 40 mounted between the water storage tank and a wash stand 10, and comprises: a water tank 51 formed above a defecation section 20 of a toilet bowl; a filter unit 60 mounted to a wash water flow passage formed by the connect pipe 40 and the water tank 51 ; a water supply valve unit 70 installed in the water tank; and a wash water control unit 80. [65] The connecting pipe 40 includes a pipe joint 41 for connecting pipe elements according to the length of pipe or the installation length, direction and angle of pipe, one end being connected to a drain 14 of the wash stand 10 and the other end being coupled to the upper side of the water tank 51 of the water storage tank. [66] The water tank 51 is the same as an ordinary one in that it has a space for storing water (hereinafter, wash water) being able to flush the defecation section 20, and the filter unit 60 is coupled to the joint of the water tank 51 coupled to the connecting pipe 40. [67] The water supply valve unit 70 comprises a water supply valve 71 installed in the water tank 51 and connected and coupled to a water supply pipe 32 supplying water from outside to open/shut the flow of water and a float 72 shutting the flow of water via the water supply valve 71 when supplied and stored flush water reaches a pre¬ determined water level. [68] Here, the predetermined water level is set to the minimum amount of water acceptable for flushing the defecation section 20. This set water level is set according to the shape and height of a trap where a drain 21 of the defecation section 20 is formed. [69] The flush water control unit 80, as explained in the prior art, comprises a valve body 81 shutting/opening the passage for supplying flush water to the defecation section 20 from the water tank 51 and a lever 83 connected to the valve body 81 by a wire 82 or the like and coupled to the upper side of the water tank 51 to move the valve body 81. [70] A drain body 84 to which the valve body 81 is coupled is constructed to drain surplus flush water to the outside if supplied flush water exceeds a predetermined water level. [71] FlG.3 is an exploded perspective view of the construction of a filter unit extracted from the construction of the water storage tank. [72] Referring to FlGs.2 and 3, the filter unit 60 is installed at an inner surface of the water tank 51 to which the connecting pipe 40 is coupled. Specifically, the filter unit 60 comprises a coupling element 61 coupled to the water tank 51, a filter casing 62 blocking impurities of supplied wash water, and a filtering element 63 blocking con¬ taminants of supplied wash water. [73] Here, because a slit 63 having a longitudinal direction is formed at the water tank 51, the coupling element 61 is formed in the shape of a projection corresponding and coupled to the slit 63 . The filter casing 62 has the shape of a cubic frame body so that the coupling element 61 can be coupled to both sides thereof to thus couple with the filtering element 63, and is formed in a mesh pattern in which each face of the cube forms a grid space. [74] Further, the filtering element 63 can be realized by forming or collecting a nonwoven fabric, for filtering contaminants of running wash water, and filtering materials, such as activated charcoal, whereas, in case of ordinary houses, the filtering element 63 can be constructed in a manner to filter only impurities visible to the naked eye and pass soap water or the like considering that used wash water generally contains soap, thereby enabling disinfection and flushing of the defecation section 20 via such soap water. [75] Hence, the aforementioned filtering element 63 to be prepared includes two or more types; one capable of filtering fine contaminants and one made of a material capable only of filtering impurities bigger than a predetermined particle size. [76] As the filter unit 60 is coupled to the inside of the water tank 51 in relation with the aforementioned construction, a door mechanism 53 is constructed at one side of a lid 52 closing an open portion of the water tank 51 so that the filtering element 63 of the filter unit 60 can be easily replaced. [77] The door mechanism 53 is constructed such that it may be opened/closed vertically by cutting out parts of the lid 52 and hingeably coupling a cut member. [78] F1G.4 is an exploded perspective view showing the state of a filter unit being installed at the pipe joint of the connecting pipe. F1G.5 is a sectional view of a coupling state of the pipe joint. [79] Referring to FlGs.4 and 5 along with F1G.2, the filter unit 64 comprises coupling elements 65, filter casings 66 and filtering elements 67 as in the filter unit 60 disclosed in FTG. 3. [80] Here, the coupling element 65 is a ring-shaped member designed for insertion into the inside of both ends of the pipe joint 41, the filter casing 66 is constructed in a mesh pattern for closing one side of the coupling element 65, and the filtering element 67 includes two or more types as stated above. [81] Further, slits 42 are formed in a longitudinal direction at the ends of the pipe joint 41, and grip projections 68 corresponding and coupled to the slit 42 and protruded outward are formed at the coupling elements 65 coupled to the ends of the slits 42, so as to easily attach and detach the filter unit 64 to and from the pipe joint 41 [82] Subsequently, each of the filter units 60 and 64 coupled to the pipe joint 41 of the water tank 51 is based on the same technical idea except for the grip projections 68 of the coupling elements 65. Not only are the filter units 60 and 64 installed at both the water tank 51 and the pipe joint 41 since the grip projections 68 are installed on the passage through which used wash water runs, they also can be installed selectively at the water tank 51 or the pipe joint 41 considering economic factors. [83] Further, though the pipe joint 41 is generally an elbow-shaped pipe joint, all kinds of pipe joints, such as Y-shaped and T-shaped pipe joints, are applicable. These pipe joints are applicable to either water inlet or outlet, or to the water inlet and outlet, re¬ spectively. [84] FlGs.6 to 8 are sectional views showing the recycling of wash water of the water storage tank and the flushing process of a defecation section. [85] F1G.6 shows the state of wash water being at a full water level. At this moment, if supplied wash water reaches a water level higher than the drain body 84, surplus flush water is drained out via the drain body 84. [86] In this state, if a user rotates the lever 83, the valve body 81 is moved to an upper side by the wire 82 and flush water is ejected into the defecation section 20, thereby flushing the defecation section 20 and draining the flush water out through the drain 21. [87] After the defection section 20 is flushed, the wash water in the inside of the water tank 51 is exhausted as in F1G.7. This rotates the float 72 by a certain angle, thus opening the water supply valve 71 and causing the water supply valve 71 to supply water from the outside. [88] Thereafter, the water supplied via the water supply valve 71 is supplied sufficient to meet the minimum water level S required for flushing the defecation section 20 as shown in F1G.8, and the water supply valve 71 is shut by means of the float 72. At this moment, though the flush water can maintain the minimum water level S with the water supplied from outside, if the supply of wash water is accomplished simul¬ taneously with the supply of water from outside the flush water exists in the form of a mixture of outside water and wash water. [89] Thus waste of new wash water supplied from outside can be reduced at an average efficiency of approximately 70% per day, and when wash water is supplied to the water tank 51, the impurities and contaminants mixed with the wash water are filtered by the filter units 60 and 64, thus enabling collection of relatively pure flush water. [90] F1G.9 is a sectional view showing another embodiment of a filter unit of the con¬ struction of the water storage tank according to the present invention. [91] Referring to F1G.9 along with F1G.2, the filter unit 90 has an input opening 92 opened to the outside, which is formed on the connecting pipe 40 in order to block the impurities of wash water used in the wash stand 10, and is provided with a filter casing 91 placed therein through the input opening 92. [92] Further, a cover 93 mainly formed of soft synthetic resin or the like is coupled to the input opening 92 so as to enclose the input opening 92. [93] When impurities are collected by the filter casing 91 during the flow of wash water, the user separates the cover 93 from the input opening 92, extracts the filter casing 91, removes the impurities, returns the filter casing 91 to the input opening 91, and then couples the cover 93 to the input opening 92, whereby the thus constructed filter unit 90 can satisfy the process of blocking and removing impurities from wash water. [94] Such a filter unit 90 of said another embodiment enables the defecation section 20 to be disinfected and flushed with soap water or the like by blocking impurities, such as hair, stones, etc. which are carried by the wash water. [95] Embodiment 2 [96] As described in connection with Embodiment 1 above, the water saving effect is minimal, since wash water having the minimum water level required for flushing the defecation section 20 is composed solely of city water, and there is a difficulty in con¬ tinuously utilizing wash water since wash water is not stored in a separate space. [97] Further, because the defecation section is not rinsed with city water after being flushed with flush water mixed with soap water, soap ingredients bond to the defection section, whereby impurities such as dust are easily accumulated, and thus it is hard to maintain the cleanliness of the defecation section. [98] Therefore, it may also be possible to enable continuous supply of wash water and improve the cleanness of the defecation section by storing city water and wash water separately in divided spaces divided by a dividing plate. This will now be described in more detail. [99] FIGs.10 to 12 are views of another embodiment of the water storage tank of the water saving toilet bowl according to the present invention. [100] A storage section formed in the water tank 51 and storing flush water is divided into a first storage chamber 111, which is formed at the side communicating with the water supply pipe 32 of the water tank 51 by a dividing plate 120 positioned upright in a thin plate shape in the water tank 51 and stores flush water including city water introduced through the water supply pipe 32, and a second storage chamber 112, which is located at the side communicating with the connecting pipe 40 in the water tank 51, formed corresponding to the first storage chamber 111 with the dividing plate 120 as the center and stores wash water introduced through the connecting pipe 40. [101] Here, the installation direction of the dividing plate 120 is not limited to a specific direction, and the number of dividing plates 120 may be freely modified and adapted according to circumstances and conditions as well. [102] Further, the dividing plate 120 has inlet holes 121 and 122 for enabling the wash water stored in the second storage chamber 112 to flow to the first storage chamber 111. [103] The inlet holes 121 and 122 consist of the first inlet hole 121 installed adjacent to the bottom surface of the water tank 51 and the second inlet hole 122 formed at a point relatively higher than the first inlet hole 121. [104] It is natural that the number and shape of the inlet holes 121 and 122 are freely modifiable and adaptable according to the conditions under which the toilet bowl will be used. [105] Moreover, the dividing plate 120 includes shutoff valves 123, which are coupled to the dividing plate 120, and serve to open and shut the inlet holes 121 and 122. The shutoff valves 123 are provided in equal number to the number of the inlet holes 121 and 122 and are installed corresponding to the spot where the inlet holes 121 and 122 of the dividing plate 120 are formed. [106] Preferably, the dividing plate 120 and the shutoff valves 123 are coupled by pins so that when the shutoff valves 123 are opened, the wash water in the second storage chamber 112 is moved to the first storage chamber 111 without difficulty in case that the wash water is stored at a water level exceeding the water level of the inlet holes 121 and 122 and the first storage chamber 111 even though the wash water has a low water pressure, and when the shutoff valves 123 are shut, the shutoff valves 123 are restored by the dead load and the water pressure formed in the first storage chamber 111 to thus form a boundary surface along with the dividing plate 120. [107] This operation will be explained in more detail. Once the toilet bowl is used, the wash water stored in the first storage chamber 111 of the water tank 51 is drained to the defecation section 20 along a delivery pipe 75. [108] Thus, the first storage chamber 111 becomes empty, and the float 72 of the water supply valve unit 70 descends to thus open the water supply valve 71. [109] Once the water supply valve 71 is opened, city water is introduced through the water supply valve 71. Parts of the introduced city water are stored in the first storage chamber 111 via a water supply line 73 connected to the water supply valve 71 as shown in F1G.21, while the other parts are moved to the delivery pipe 75 via a dis¬ tributing line 74 connected to the water supply valve 71 to thus rinse the defecation section 20 that has been flushed by the drainage of wash water. [110] Meanwhile, simultaneously with the introduction of city water to the first storage chamber 111 along the water supply pipe 32, the shutoff valves 123 of the dividing plate 120 are opened and thus the wash water stored in the second storage chamber 122 is moved to the first storage chamber 111. [Ill] If the water level of the flush water stored in the first storage chamber 111 becomes higher than the first inlet hole 121, the wash water moving via the first inlet hole 121 receives resistance by the effect of the water pressure of the first storage chamber 111. It should be noted that, the wash water in the second storage chamber 112 is moved to the first storage chamber 111 without difficulty via the second inlet hole 122 before the water level of the first storage chamber 111 approaches the second inlet hole 122. [112] Meanwhile, if the water level of the first storage chamber 111 becomes higher than the water level of the second storage chamber 112, the shutoff valves 123 are closed by its own load and the water pressure formed in the first storage chamber 111 to thus shut the inlet holes 121 and 122, thereby preventing the flush water of the first storage chamber 111 from being moved to the second storage chamber 112. [113] Further, if the toilet bowl is used under the condition of the second storage chamber 112 being empty, city water is supplied to the first storage chamber 111 after the flush water of the first storage chamber 111 is drained. That is, by the principle and action of the shutoff valves 123 as seen above, the water of the first storage chamber 11 is prevented from being introduced into the second storage chamber 112, thereby preserving a space for storing wash water in the second storage chamber 112. [114] Embodiment 3 [115] The water storage tank of the water saving toilet bowl recycling wash water according to the present invention may be adapted by the method of dividing the inside of the water tank 51 as shown in FIGs.13 and 14. [116] As shown in FIGs. 13 and 14, an auxiliary partition 145 is installed on the bottom surface of the water tank 51 to further increase city water saving effect. The auxiliary partition 145 is coupled to the bottom surface of the water tank 51 and located in both directions of the water supply valve unit 70, being spaced a predetermined gap from the water supply valve unit 70. [117] Here, the smaller the gap between the water supply valve unit 70 and the auxiliary partition 145 the higher the water saving effect unless the auxiliary partition 145 does not inhibit the water supply valve 71 of the water supply valve unit 70 from being driven. [118] That is, it is preferable that the auxiliary partition 145 be formed close to the water supply valve unit 70 within a range of not inhibiting the water supply valve 71 from being driven. [119] According to the above-described construction, supplied city water is stored in the space formed between the water supply valve unit 70 and the auxiliary partition 145, and accordingly the water supply valve 71 is closed by a relatively small amount of city water, thereby minimizing the use of city water. [120] Embodiment 4 [121] FIGs.15 to 17 are views of still another embodiment of the water saving water storage tank according to the present invention. [122] The connecting pipe 40 for supplying wash water and the drain body 84 for draining the flush water introduced at a level higher than a predetermined water level are connected by an inlet pipe 100 within the water tank 51, and plural outlet holes 101 are perforated on the entire surface of the inlet pipe 100. [123] Storage spaces constructed to store wash water and flush water separately are realized by forming dividing plates 120 and 150 having a predetermined height so as to divide the space to both sides from the valve body 81 in the water tank 51. A first storage chamber 111, a second storage chamber 112, and a common storage chamber 11 Ia at the middle part are formed inside the water tank 51, being marked off with the dividing plate 120 and 150. [124] Each of the valve bodies 81 and 81a formed separately at a lower side of the dividing plate 150 is adapted to send the flush water stored in the first storage chamber 111 and the common storage chamber 11 Ia to the delivery pipe 75. The valve bodies 81 and 81a are opened by operating the lever 83 connected by a wire 82 to the valve bodies 81 and 81a. [125] The connecting pipe 40 is coupled to the drain 14 of the wash stand 10 and connected and installed to the upper inside of the water tank 51, and the inlet pipe 100 is interconnected and installed to the connecting pipe 40, which is located at the upper inner side of the water tank 51, and to the drain body 84, which is installed to the inside of the water tank 51 and drains overflow water introduced at a water level higher than a predetermined water level. The inlet pipe 100 is installed in a manner that the wash water supplied through the connecting pipe 40 is dropped and introduced to the floor of the water tank 51 via the outlet holes 101 perforated on the outer part thereof. [126] Here, the inlet pipe 100 with the plurality of outlet holes 101 perforated there through is formed to have a larger diameter than the drain body 84 of the connecting pie body 40 so that the wash water introduced through the connecting pipe 40 is temporarily stagnated. By this, the wash water is drained out of the outlet holes 101 and dropped to the floor of the water tank 51, and impurities with a large particle size are drained to a sewer via the drain body 84. [127] Thus, the inlet pipe 100 is installed in a manner that the wash water supplied from the wash stand 10 is filtered and introduced into the water tank 51 as the plurality of outlet holes 101 with a relatively small diameter are perforated thereon, while the impurities with a relatively large particle size are drained out via the drain body 84 so that the impurities are not introduced into the water tank 51. [128] Meanwhile, sectional type storage chambers for storing wash water and flush water separately are formed in the internal space of the water tank 51. That is, the inside of the water tank 51 is divided into the first storage chamber 111, the second storage chamber 112 and the common storage chamber 11 Ia by the two dividing plates 120 and 159 positioned upright from the bottom surface of the water tank 51. [129] At this moment, the two valve bodies 81 and 81a are formed in a slanted shape at the lower end of the dividing plate 150, and the delivery pipe 75 is formed at the bottom surface halfway between these valve bodies 81 and 81a. Thus, the flush water stored in the first storage chamber 111 and the flush water stored in the common storage chamber 11 Ia of the water tank 51 are drained simultaneously by opening the valve bodies 81 and 81a. [130] Here, a plurality of inlet holes 121 and shutoff valves 123 are vertically formed on the dividing plates 120 and 150 so that the flush water and wash water stored in the first storage chamber 111 and second storage chamber 112 respectively are not mixed with each other. [131] Further, among the plurality of inlet holes 121 and shutoff valves 123 vertically formed on the dividing plates 120 and 150, the inlet holes 121 and shutoff valves 123 formed on the dividing plate 150 at the first storage chamber 111 for storing flush water are installed at a higher position than the other inlet holes and shutoff valves. [132] Since the plurality of shutoff valves 123 vertically formed on both the dividing plates 120 and 150 are opened only in one direction, the flush water and wash water stored in the first storage chamber 111 and second storage chamber 112, respectively, are movable only toward the common storage chamber Ilia positioned halfway therebetween. Thus, the flush water and wash water in the first storage chamber 111 and second storage chamber 112 are not mixed with each other. [133] Hence, the second storage chamber 112 at one side storing wash water stores the wash water drained via the outlet holes 101 of the inlet pipe 100, and the first storage chamber 111 at the other side storing flush water stores city water introduced through the water supply pipe 32 and the water supply valve 71. At this time, as the flush water and wash water introduced to the first storage chamber 111 and second storage chamber 112, respectively, increase in water level, the shutoff valves 123 located at lower parts of the dividing plates 120 and 150 are opened to thus supply the flush water and wash water into the common storage chamber 11 Ia at the middle part. [134] In other words, since the shutoff valves 123 installed on both the dividing plates 120 and 150 are adapted to be opened only toward the common storage chamber Ilia at the middle part, if the wash water and flush water stored in both of the storage chambers reaches a predetermined water level, the shutoff valves 123 are opened to supply the wash water and flush water into the common storage chamber 11 Ia. By forming the shutoff valve 123 formed on the dividing plate 150 at the side of the fist storage chamber 111 higher than the shutoff valve 123 of the dividing plate 120 at the other side, the wash water in the second storage chamber 112 is firstly introduced into the common storage chamber Ilia. [135] Resultantly, if a great deal of water is used at the wash stand 10 and thus a large amount of wash water is introduced to the water tank 51 and stored in the second storage chamber 112, the wash water stored in the second storage chamber 112 is drained and stored in the common storage chamber 11 Ia at the middle part. As such, the inflow amount of flush water is reduced to thereby save the use amount of city water. [136] The slanted valve bodies 81 and 81a having different directions formed on the lower part of the dividing plate 150 are mounted in a structure that is capable of opening lower sides of the common storage chamber Ilia and first storage chamber 111, respectively. Since the front end of the delivery pipe 75 at the bottom surface of the water tank 51 is located halfway between the valve bodies 81 and 81a, the flush water in the common storage chamber Ilia and the flush water in the first storage chamber 111 are simultaneously drained through the delivery pipe 75 by opening the valve bodies 81 and 81a. [137] At this moment, the valve bodies 81 and 81a are installed in a manner that they are connected to the wire 82 to open and close the valve bodies 81 and 81a simultaneously by operating the lever 83. The valve body 81a located at the first storage chamber 111 side has a relatively small size compared to the valve body 81 at the other side, and thus the flush water in the first storage chamber 111 for storing flush water, i.e., city water, is drained at a low speed, thereby reducing the consumption thereof. [138] Therefore, flush water mixed with wash water is drained by means of the valve body 81 in the common storage chamber Ilia, and clean city water, which is stored in the first storage chamber 111 after flushing the defecation section 20 to some extent with the flush water in the common storage chamber 11 Ia, is drained by means of the valve body 81a in the first storage chamber 111 at the other side, thereby cleanly flushing the defecation section 20 once again. [139] Further, according to Embodiment 4, in the case that wash water is drained from the outlet holes 101 of the inlet pipe 100 and flows into the water tank 51, the sound of the wash water flowing from the outlet holes 101 may be loud. Thus, as shown in FIG. 18, a bent portion 102 bent toward the floor of the water tank 51 is formed on the inlet pipe 100, and outlet holes 101 are formed only on the bent portion 102, whereby the wash water introduced to the inlet pipe 100 is drained out of the outlet holes 101 of the bent portion 102 adjacent from the floor of the water tank 51, and thus the noise of draining the wash water is greatly reduced. [140] At this moment, the outlet holes 101 may be formed only on the bent portion 102 or may be formed over the entire surface of the inlet pipe 100. It is possible to obtain the effect of draining a larger amount of wash water per flush by forming the outlet holes 101 over the entire surface of the inlet pipe 100. [141] The construction of the dividing plates 120 and 150 adapted to the above-described embodiments 2, 3, and 4 can be understood in more detail by referencing to the front view of FTG.19 and the side view of FTG.20. [142] Each of the dividing plates 120 and 150 is positioned upright from the bottom surface of the water tank 51 and divides the inner storage space of the water tank 51. The inlet holes 121 and 122 spaced vertically from each other are formed on the dividing plates 120 and 150, and the shutoff valves 123 capable of opening and closing the inlet holes 121 and 122 are hingeably coupled to one side of the dividing plates 120 and 150. [143] At this moment, the shutoff valves 123 have a sufficient size to block the inlet holes 121 and 122, and the front ends thereof are hingeably coupled to one side of the dividing plates 120 and 150. As the shutoff valves 123 rotate around a hinge point as an axial point, they perform the action of blocking or opening the inlet holes 121 and 122 by rotation. Each of the storage chambers divided by the dividing plates 120 and 150 are able to receive and move flush water or wash water unidirectionally by means of the shutoff valves 123. [144] The water supply valve 70 adapted to the above-described embodiments 2, 3, and 4 can be understood in more detail by referencing to FIG.21. [145] The float 72, a floating globe, plays the role of opening and closing the water supply valve 71 by being lifted in relation to the water level of the flush water or wash water stored in the respective storage chambers. [146] A water supply line 73 for supplying city water supplied from the outside into the water tank 51 is formed on the water supply valve 71. According to the above embodiment, a distributing line 74 as another embodiment is pulled out of the water supply valve 71, and city water supplied from the outside is supplied to the delivery pipe 75 by the distributing line 74, thereby enabling it to cleanly flush the defecation section 20 once again. [147] Further, the division of the internal space of the water tank 51 by the dividing plate 120 adapted to the above embodiments 2, 3, and 4 may be modified in various ways according to another embodiment below. [148] FIG.22 is a sectional view of a wash water storage space separately connected to one side of the water storage tank. FIG.23 is a sectional view of a wash water storage space separately connected to the rear side of the water storage tank. [149] That is, as shown in FIG.22, the wash water storage space is constructed of a first storage chamber 111 formed in a water tank 51 and a second storage chamber 112 formed in a tank 160 located outside an upper part of the water tank 51, and is im¬ plemented by preparing connecting pipes 161 communicating the water tank 51 with the tank 160. [150] As for the position of the tank 160, although the tank 160 is constructed at the side of the water tank in the embodiment of the present invention, it is obvious that the position of the tank 160 is changeable to the front, rear, and left and right sides of the tank 160 according to conditions. [151] For instance, as shown in FIG.23, the tank 160 is connected to the back face of the tank 51 considering the aesthetic appearance of the toilet, and parts of the tank 160 and connecting pipes 161 are constructed inside a toilet bowl body of a toilet or the like. [152] As described above, it is apparent that the construction, structure and principle of the present invention are the same even if the tank 160 is connected to the back face of the water tank 51. [153] Furthermore, in this embodiment, a filter unit 60 for filtering wash water is constructed at a point connected to the connecting pipes 161 of the tank 160, and shutoff valves 123 are installed inside the connecting pipe 161 for communicating the water tank 51 with the tank 160. It may also be possible to install the shutoff valves 123 at a point at which the connecting pipe 161 of the water tank 51 and tank 160 are connected. [154] It is natural that one or a plurality of connecting pipes 161 can be constructed as is the case with the inlet holes 121 and 122. However, it is preferable to construct at least three connecting pipes 161 vertically spaced from one another, considering smooth supply of wash water to the first storage chamber 111 from the second storage chamber and the water level of the wash water stored in the second storage chamber 112. [155] The method and principle of moving water of the first storage chamber 111 and second storage chamber 112 are the same as in the above-described embodiment. But, this embodiment is different in that the wash water, which is introduced to the second storage chamber 112 at the point in time when the second storage chamber 112 exceeds a predetermined water level, is moved to the first storage chamber 111 through the connecting pipes 161 at the upper side connected to the tank 160 and drained to the drain body 84. [156] Industrial Applicability [157] As described above, the energy saving toilet bowl system recycling wash water of this invention enables the saving of flush water since the wash water to be disposed of is recirculated to a water storage tank of the toilet bowl and reused, provides the effect of improving water quality and preventing environmental contamination since emissions of contaminated water to be disposed of are reduced, along with the effect of saving water resources through recycling of wash water, allows a user to obtain economic gain through energy conservation, and prevents the congestion or the like of a sewer because various kinds of impurities or the like can be filtered and removed using a filter, thereby enabling more efficient use. Thus, the system is adaptable to most toilet bowls. [158] [159]

Claims

Claims [1] In a water storage tank for a toilet bowl which stores as flush water the water supplied from a water tank formed at an upper side of a defecation section of the toilet bowl, and supplies flush water by driving a flush water control unit installed at one side of the water tank, an energy saving toilet bowl system recycling wash water, comprising: a connecting pipe which communicates and connects the drain of a wash stand installed nearby the toilet bowl in a bathroom and the top portion of the water tank; a filter unit which is installed on a wash water flow passage formed across the connecting pipe and the water tank and filters wash water used in the wash stand; and a water supply valve unit which is installed in the water tank so as to communicate with the flow passage supplied with water from the outside, performs water supply at the minimum level capable of flushing the defecation section with wash water, and cuts off water supply from the point of time when the level is exceeded. [2] The system of claim 1, wherein the filter unit comprises: a coupling element which is coupled to the water flow passage of the connecting pipe and water tank; a filter casing which is coupled to one side of the coupling element, is formed to have a mesh-type grid space, and blocks impurities bigger than the grid space; and a filtering element which is coupled to the space formed by the filter casing and the coupling element and blocks the passage of the impurities of the wash water. [3] The system of claim 1, wherein the filter unit is coupled to one side of the pipe joint or to each lateral end thereof through which wash water passes, the pipe joint being coupled to the connecting pipe. [4] The system of claim 3, wherein slits are formed at the ends of the pipe joint coupling to the filter unit, and grip projections are formed at the coupling elements of the filter unit so as to correspond and be connected to the slits and protruded. [5] The system of claim 1, wherein the filter casing capable of removing impurities of wash water is inserted into the connecting pipe, an input opening for inserting the filter casing thereinto is formed on the connecting pipe, and a cover for enclosing an open space is coupled to the input opening. [6] The system of claim 1, wherein the water supply valve unit of the water tank comprises: a float which is driven by buoyancy; a water supply valve for receiving and cutting off city water from the outside by being opened or closed by the float; a water supply line which is connected to the water supply valve and introduces city water to the storage chamber of the water tank; and a distributing line which introduces city water to a drain when the water supply valve is opened, with one side being connected to the water supply valve and the other side being connected to the drain. [7] The system of claim 1, wherein dividing plates are formed in the water tank for dividing a storage section into a first storage chamber for storing city water and a second storage chamber, and inlet holes are formed on the dividing plates for enabling the wash water stored in the second storage chamber to flow into the first storage chamber along with city water when supplying water to the first storage chamber. [8] The system of claim 7, wherein the dividing plate has shutoff valves which are formed on the spot where the inlet holes are formed, prevents the city water of the first storage chamber from being moved to the second storage chamber via the inlet holes, and only permits the wash water of the second storage chamber to be moved to the first storage chamber. [9] The system of claim 7, wherein the water tank further comprises an auxiliary partition which is spaced a predetermined gap from the water supply valve unit in one direction so that the water supply valve is closed by a rather smaller amount of city water, and is coupled to the bottom surface of the water tank. [10] The system of claim 9, wherein the auxiliary partition coupled to the bottom surface of the water tank is formed in a slanted shape. [11] The system of claim 7, wherein the second storage chamber is separately formed at one side of the water tank, and a tank having the second storage chamber is connected to the water tank by a plurality of connecting pipes. [12] The system of claim 7, wherein the second storage chamber is separately formed at the rear side of the water tank, and a tank having the second storage chamber is connected to the water tank by a plurality of connecting pipes, the separated tank being buried in the wall of a toilet. [13] The system of claim 1, wherein an inlet pipe for connecting the connecting pipe for supplying wash water and the drain body for draining the flush water introduced at a level higher than a predetermined water level are formed within the water tank, with a plurality of outlet holes perforated throughout the entire surface of the inlet pipe, the inside of the water tank is divided into a first storage chamber, a second storage chamber, and a common storage chamber formed halfway therebetween by forming a plurality of shutoff valves and inlet holes and forming dividing plates spaced from each other positioned upright from the bottom surface of the water tank, and facing valve bodies simultaneously openable by the flush water control unit are separately formed at a lower side of one of the dividing plates so as to flush the flush water of the first storage chamber and common storage chamber by the facing valve bodies. [14] The system of claim 13, wherein the inlet pipe with the plurality of outlet holes perforated through has a larger diameter than the drain body of the connecting pipe. [15] The system of claim 13, wherein among the plurality of inlet holes and the shutoff valves formed on the dividing plates, the inlet holes and the shutoff valves formed on the dividing plate at the first storage chamber are installed at a higher position than the shutoff valves and inlet holes formed on the dividing plate at the second storage chamber. [16] The system of claim 16, wherein the facing valve bodies formed at the lower side of one of the dividing plates are located above a delivery pipe formed on the bottom surface of the water tank, and the valve bodies connected by a wire are opened by operating the lever by the flush water control unit so as to simul¬ taneously drain the flush water in the first storage chamber and common storage chamber. [17] The system of claim 13, wherein a bent portion is formed on the inlet pipe by bending the middle part of the inlet pipe in a curve toward the bottom surface of the water tank, and outlet holes are formed only on the bent portion so as to reduce flow noise when draining the wash water. [18] The system of claim 16, wherein the facing valve bodies formed on the lower side of one of the dividing plates and connected by the wire are opened in stages by operating the lever by the flush water control unit, and the length of the wire is differently applied so that the valve body located in the first storage chamber is opened later than the valve body located in the common storage chamber, whereby the flush water in the first storage chamber is drained after the wash water in the common storage chamber is drained, thereby promoting the im¬ provement of flushing efficiency.