JP2017127500A - Prefilter unit and bathwater cleaning apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a prefilter unit configured to exchange a prefilter without returning contamination adsorbed to the prefilter to the inside of a bathtub in a bathwater cleaning apparatus for performing cleaning processing such as sterilization.SOLUTION: A prefilter unit 20 for use in a bathwater cleaning apparatus 100 includes: a water inlet for sucking bathwater in a bathtub 1; a prefilter 21 disposed in the prefilter unit for removing contamination of the bathwater sucked by the intake port; a water outlet for discharging the bathwater whose contamination is removed by the prefilter, to the bathwater cleaning device; and a water stop part provided between the prefilter and the water inlet. The bathwater cleaning apparatus sucks the bathwater in the bathtub, removes the contamination of the sucked bathwater, and returns it to the bathtub.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bath water cleaning device for performing cleaning treatment such as filtration and sterilization of water in a bathtub, and more particularly to a pre-filter unit and a bath water cleaning device provided in a water absorption pipe for sucking water in the bath. .

  After the bath water in the bathtub is sucked from the water suction port with a circulation pump and large dust is removed with a pre-filter provided in the water suction pipe, it is cleaned by filtration, heating, sterilization, etc. with the main filter A bath water purifier that circulates and purifies bath water by returning this bath water from the drain port to the bathtub and repeating this cycle is commercially available. In this type of bath water cleaning device, by providing a pre-filter on the water absorption pipe, preliminary filtration can be performed and the main filter can be prevented from becoming clogged quickly.

  11 to 13 are diagrams showing a related bath water cleaning apparatus 300 (see, for example, Patent Documents 1 and 2). As shown in FIGS. 11 to 13, the bath water cleaning apparatus 300 includes a main body 10 and an intake / exhaust unit 310. The main body 10 includes a circulation pump 11 for circulating the bath water, a septic tank 12 for filtering impurities such as fine dust and dirt from the bath water, a sterilization unit 13 for sterilizing the bath water, and the bath water from a low temperature. The heater 14 is heated to a high temperature. The suction / discharge unit 310 includes a water suction port 15 that sucks up bath water, a water discharge port 16 that drains the bath water purified by the main body 10 into a bathtub, and a prefilter that captures large dust such as hair from the bath water sucked up from the water suction port 15. And unit 320.

  As shown in FIG. 13, the pre-filter unit 320 of the bath water cleaning apparatus 300 is integrated with the water suction port 15 for sucking water from the water suction port 15 and immediately catching debris in water, or for ease of manufacture. A prefilter 330 is loaded therein.

JP-A-8-89978 JP-A-8-38824

  However, when the prefilter 330 is removed from the prefilter unit 320 for cleaning or the like, there is a problem in that a part of the dirt adsorbed on the prefilter 330 comes out in the bath water in the bathtub. Further, when the prefilter 330 is taken out from the prefilter unit 320, it is also adsorbed to the prefilter unit 320 that the bath water of the main body, the suction / discharge unit, or the water absorption pipe connecting these, flows back into the bathtub. Part of the dirt was the cause of returning inside the bathtub.

  Accordingly, in view of the above problems, the present invention provides a bath water cleaning apparatus for performing a cleaning process such as sterilization, in which a prefilter can be replaced without returning dirt adsorbed to the prefilter into the bathtub. A filter unit and bath water cleaning device are provided.

  In order to solve the above-mentioned problems, the following matters are proposed in one or more embodiments of the present invention.

  Form 1; One or more embodiments of the present invention are pre-filter units for use in a bath water cleaning apparatus that takes bath water in a bathtub, removes dirt from the taken bath water, and returns the bath water to the bathtub. A water inlet that sucks in the bath water of the bathtub, a prefilter that is disposed in the prefilter unit and that removes dirt from the bath water absorbed by the water inlet, and bath water from which dirt has been removed by the prefilter. A pre-filter unit for a bath water cleaning device, comprising: a water outlet for discharging water to the bath water cleaning device; and a water stop portion provided between the pre-filter and the water inlet. is suggesting.

  Mode 2: One or more embodiments of the present invention are provided with the pre-filter unit for the bath water purifier of the mode 1 in a detachable manner, a water absorption pipe for absorbing the bath water of the bathtub, and the water absorption A circulation pump that is arranged on the downstream side of a pipeline and circulates the bath water, a septic tank that purifies the bath water, a sterilization unit that sterilizes the purified bath water, and the purified and sterilized bath water The present invention proposes a bath water cleaning apparatus comprising a heating section for heating and a water discharge pipe for returning the heated bath water to the bathtub.

  Form 3: In one or more embodiments of the present invention, the bottom of the pre-filter unit for the bath water purifier is positioned higher than the position of the water outlet of the water discharge line with reference to the bottom surface of the bathtub. A bath water cleaning device characterized by being arranged is proposed.

  Mode 4: In one or more embodiments of the present invention, a part of the water absorption conduit on the side of the circulation pump is extendable or bendable, and further, the pre-filter unit for the bath water purifier A bath water cleaning device characterized in that the pre-filter unit for the bath water cleaning device can be pulled up by pulling up the handle portion. .

  Mode 5: One or more embodiments of the present invention propose a bath water cleaning apparatus in which the water-absorbing water pipe that is extendable or foldable has a bellows shape.

  According to the present invention, in the bath water cleaning apparatus, the prefilter can be replaced without returning the dirt adsorbed on the prefilter into the bathtub.

It is the schematic of the bath water cleaning apparatus 100 which concerns on 1st Embodiment. It is a perspective view of the pre filter unit 20 which concerns on 1st Embodiment. It is a disassembled perspective view of the pre filter unit 20 which concerns on 1st Embodiment. It is a front view in the open state of the stopper 65 of the rear cover 60 of the pre filter unit 20 which concerns on 1st Embodiment. It is sectional drawing which shows the other structure of the 1st water stop part (stopper) which concerns on 1st Embodiment. It is a front view in the closed state of the stopper 65 of the rear cover 60 of the pre filter unit 20 which concerns on 1st Embodiment. It is the schematic of the bath water cleaning apparatus 110 which concerns on 2nd Embodiment. It is the schematic of the modification 120 of the bath water cleaning apparatus 110 which concerns on 2nd Embodiment. It is the schematic of the bath water cleaning apparatus 130 which concerns on 3rd Embodiment. It is the schematic of the bath water cleaning apparatus 200 which concerns on 4th Embodiment. It is a perspective view of the bath water cleaning apparatus 300 which concerns on related technology. It is the schematic of the bath water cleaning apparatus 300 which concerns on related technology. It is a disassembled perspective view of the pre filter unit 320 of the bath water cleaning apparatus 300 which concerns on related technology.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the constituent elements in the present embodiment can be appropriately replaced with existing constituent elements and the like, and various variations including combinations with other existing constituent elements are possible. Therefore, the description of the present embodiment does not limit the contents of the invention described in the claims.

<First Embodiment>
FIG. 1 is a schematic view of a bath water cleaning apparatus 100 according to the first embodiment of the present invention. In addition, a thick black arrow shows the flow of bath water. As shown in FIG. 1, the bath water cleaning apparatus 100 includes a water suction port 15 that sucks in bath water in the bathtub 1, a main body 10 that processes bath water sucked from the water suction port 15, and bath water that has been processed by the main body 10. And a water discharge port 16 that is returned to the bathtub 1 again. The water inlet 15, the main body 10, and the water outlet 16 are connected by a circulation path that is sequentially connected.

  The main body 10 includes a circulation pump 11 for circulating the bath water, a septic tank 12 for cleaning the bath water, a sterilizing unit 13 for sterilizing the bath water, and a heater 14 for heating the bath water after purification and sterilization treatment. . The circulation pump 11, the septic tank 12, the sterilization unit 13, and the heater 14 are also connected by a sequentially connected circulation path. Further, a water suction pipe 31 formed from the water suction port 15 to the circulation pump 11 and a water discharge pipe 32 formed from the heater 14 to the water discharge port 16 are provided. Here, the “pipe” refers to a flow path that forms a flow through a plurality of components.

  In the bath water cleaning apparatus 100, a pre-filter unit 20 including a pre-filter 21 and a first water stop portion 22 is provided in the circulation path between the water inlet 15 and the circulation pump 11. In the present embodiment, the pre-filter unit 20 is disposed in the circulation path between the water inlet 15 and the circulation pump 11 so as to be disposed near the bottom surface of the bathtub 1.

  Next, the pre-filter unit 20 will be described with reference to FIGS. The prefilter unit 20 is connected to a water absorption circuit 71 connected to the water inlet 15 and a drain circuit 73 connected to the circulation pump 11. Further, the pre-filter unit 20 is detachably attached to a plate-like attachment plate 70 provided in connection with the water absorption circulation path 71 and the drainage circulation path 73.

  The mounting plate 70 is provided with openings 72 and 74 at respective portions of the water absorption circulation path 71 and the drainage circulation path 73. The water inlet 61 and the water outlet 63 projecting from the rear part of the pre-filter unit 20 are inserted into the water absorption circulation path 71 and the drainage circulation path 73 through the openings 72 and 74, respectively. 73 in close contact with each other. Therefore, each of the water inlet 61 and the water outlet 63, and the joining part of the water absorption circuit 71 and the water discharge circuit 73 are in close contact with each other, so that the bath water does not leak out.

  In order to bond closely, it is desirable to provide an elastic member such as rubber, a gasket, or the like at a joint where a gap is generated, for example, outside the water inlet 61.

  The pre-filter unit 20 includes a pre-filter 21 and a pre-filter case as shown in FIG. 3 and a first water stop portion 22 (not shown). As shown in FIG. 3, the prefilter case includes a removable box-shaped front cover 50, a water inlet 61 through which bath water passes from the water inlet 15, and a water outlet 63 through which the bath water that has passed through the prefilter unit 20 is discharged. Are connected to the box-shaped rear cover 60, the pre-filter 21, and the operation lever 80. A pre-filter support plate 66 is disposed on the back surface of the rear cover 60 at a portion facing the pre-filter 21. The prefilter support plate 66 prevents the prefilter 21 made of a soft material such as sponge from being deformed by water pressure and blocking the pipe.

  The prefilter 21 is installed so that the bath water flowing in the prefilter case passes from the water inlet 61 to the water outlet 63, and is detachable from the prefilter unit 20. In the present embodiment, the prefilter 21 is arranged perpendicular to the flow of the bath water. However, if the bath water flowing in the prefilter case passes through the prefilter 21, the prefilter 21 is not limited to the vertical, but bath water. It may be horizontal.

  As shown in FIGS. 3 and 4, the rear cover 60 includes a unit water inlet 62 which is an opening portion of the water inlet 61, a unit water outlet 64 which is an opening portion of the water outlet 63, and the first water stop portion 22 (plug). 65), and an operation lever 80. The front cover 50 is detachably attached to the opening of the rear cover 60 so that the bath water does not leak. Specifically, the rear cover 60 and the front cover 50 include at least one of an engaging portion and an engaged portion, and an opening portion of the rear cover 60 is obtained by engaging the engaging portion and the engaged portion. The front cover 50 is engaged.

  In addition, it is desirable to provide an elastic member such as rubber between the rear cover 60 and the front cover 50 so that the bath water is in close contact with each other so as not to leak. The first water stop 22 (plug 65) is provided in the vicinity of the unit water inlet 62, is larger than the unit water inlet 62, and has a shape capable of closing the unit water inlet 62.

  As shown in FIG. 6, the operation lever 80 is attached to the first water stop portion 22 (plug 65), moves the first water stop portion 22 (plug 65), and opens and closes the unit water inlet 62. To do. Specifically, when the operation lever 80 is pushed from the front to the back, that is, into the prefilter unit 20, the unit water inlet 62 is closed, and the backflow or inflow of the bath water from the prefilter unit 20 is stopped. Can do. The stopper 65 as the first water stop portion 22 may be a hinge type as shown in FIG. In this case, the unit water inlet 62 is opened at the bottom surface of the rear cover 60, and a stopper made of a material such as silicon rubber is provided so as to close the opening, and the opening is closed by its own weight.

  On the other hand, by pulling the operation lever 80 forward, the unit water inlet 62 is opened, and bath water can flow into the pre-filter unit 20. The operation lever 80 may be manually operated or automatically operated in accordance with the stop / start of the circulation pump 11.

  When removing the pre-filter unit 20 from the mounting plate 70 for replacement or cleaning of the pre-filter 21, the operation lever 80 is operated to close the unit water inlet 62 at the first water stop 22 (plug 65). Thus, the bath water in the prefilter unit 20 can be taken out together with the prefilter unit 20. That is, the water in the prefilter unit 20 can be prevented from flowing back into the bathtub 1, and the dirt adsorbed on the prefilter 21 can be prevented from flowing out into the bath water in the bathtub 1.

  Note that the prefilter unit 20 shown in FIGS. 2 to 6 described above is an example, and may have other shapes. Further, the pre-filter unit 20 has a configuration independent of the circulation path, but may be configured to be mounted inside the circulation path. In this case, an opening / closing door or the like is required to attach / detach the pre-filter unit 20 to / from the circulation path.

  Returning to FIG. 1, a second water stop portion 40 is provided in the circulation path between the water suction port 15 and the circulation pump 11 with the prefilter unit 20 and the circulation pump interposed therebetween. In addition, the 1st water stop part 22 (plug 65) and the 2nd water stop part 40 are not restricted to a check valve, A valve etc. may be sufficient as long as it can prevent the back flow of water.

  While the main body 10 is in operation, the first water stop portion 22 (plug 65) in the prefilter unit 20 and the second water stop portion 40 provided between the prefilter unit 20 and the circulation pump 11 are opened. When the main body 10 is stopped, the first water stop portion 22 (plug 65) in the prefilter unit 20 and the second water stop portion provided between the prefilter unit 20 and the circulation pump 11 are provided. 40 is closed. The first water stop part 22 (plug 65) in the pre-filter unit 20 and the second water stop part 40 provided between the pre-filter unit 20 and the circulation pump 11 are used when the operation of the main body stops. It closes automatically or manually and opens automatically or manually when resuming operation. For example, in conjunction with the start / stop of the circulation pump 11, a second water stop 22 (plug 65) in the prefilter unit 20, a second filter provided between the prefilter unit 20 and the circulation pump 11 is used. You may be comprised so that the water stop part 40 may open and close.

  By closing the first water stop portion 22 (plug 65) in the prefilter unit 20, when the prefilter unit 20 is removed from the pipeline, the bath water remaining in the unit flows backward, and the prefilter 21 It is possible to prevent the dirt adsorbed by the prefilter 21 from being discharged into the bath water in the bathtub 1.

<How to exchange>
Next, a method for replacing the prefilter 21 will be briefly described. First, the operation of the main body 10 is stopped, and a second water provided between the first water stop portion 22 (plug 65) in the prefilter unit 20 and the prefilter unit 20 and the circulation pump 11 automatically or manually. The water stop part 40 is closed.

  Further, the prefilter unit 20 is removed from the circulation path, and the prefilter 21 in the prefilter unit 20 is replaced or cleaned. Then, the prefilter unit 20 after replacing or cleaning the prefilter 21 is returned to the circulation path, and the operation lever 80 is automatically or manually operated to retract the first water stop portion 22 (plug 65). While opening the unit water inlet 62, the 2nd water stop part 40 provided between the pre filter unit 20 and the circulation pump 11 is opened, and the operation | movement of the main body 10 is started.

  As described above, according to the present embodiment, in the bath water cleaning apparatus 100, the operation of the main body 10 is stopped, and the first or the second provided between the pre-filter unit 20 and the circulation pump 11 automatically or manually. 2 is closed, the operation lever 80 is operated automatically or manually, the unit water inlet 62 is closed by the first water stop 22 (plug 65), and the prefilter 21 is replaced or cleaned. Thus, the prefilter 21 can be replaced without returning the dirt adsorbed on the prefilter 21 into the bathtub 1.

<Second Embodiment>
FIG. 7 is a schematic view of a bath water cleaning apparatus 110 according to the second embodiment of the present invention. In addition, a thick black arrow shows the flow of bath water. As shown in FIG. 7, the bath water cleaning device 110 includes a water suction port 15 that sucks in the bath water in the bathtub 1, a main body 10 that processes the bath water sucked from the water suction port 15, and bath water that is processed by the main body 10. And a water discharge port 16 that is returned to the bathtub 1 again. The water inlet 15, the main body 10, and the water outlet 16 are connected by a circulation path that is sequentially connected.

  The main body 10 includes a circulation pump 11 for circulating the bath water, a septic tank 12 for cleaning the bath water, a sterilizing unit 13 for sterilizing the bath water, and a heater 14 for heating the bath water after purification and sterilization treatment. . The circulation pump 11, the septic tank 12, the sterilization unit 13, and the heater 14 are also connected by a sequentially connected circulation path.

  In the bath water cleaning device 110, the prefilter unit 20 including the prefilter 21 and the first water stop portion 22 (plug 65) is provided in the circulation path between the water inlet 15 and the circulation pump 11. Deployed. Further, a second water stop 40 is disposed between the prefilter unit 20 and the circulation pump 11. In the present embodiment, the pre-filter unit 20 is disposed between the water suction port 15 and the circulation pump 11 so that the bottom of the pre-filter unit 20 is disposed at a position higher than the water discharge end surface of the water discharge port 16 with respect to the bottom surface of the bathtub 1. Deployed in the circuit.

  In the first embodiment, the prefilter is disposed below the water surface 2. However, when the prefilter 21 is cleaned or replaced by being disposed on the water surface 2 as in the present embodiment, Thus, the prefilter 21 is not removed, and a part of the dirt adsorbed on the prefilter 21 can be prevented from flowing into the water in the bathtub 1. In addition, about the component which attaches | subjects the same code | symbol as 1st Embodiment, since it has the same function, the detailed description is abbreviate | omitted.

  In this embodiment, the 1st water stop part 22 (plug 65) and the 2nd water stop part 40 are comprised by the non-return valve. When the operation of the main body 10 is stopped by using the check valve, the first water stop portion 22 (plug 65) is automatically closed by water pressure. Further, the second water stop portion 40 is also automatically closed when the operation of the main body 10 is stopped.

<How to exchange>
Next, a method for replacing the prefilter 21 will be briefly described. First, when the operation of the main body 10 is stopped, a second stop provided between the first water stop portion 22 (plug 65) in the prefilter unit 20 and the prefilter unit 20 and the circulation pump 11 automatically. The water part 40 is closed.

  Further, the prefilter unit 20 is removed from the circulation path, and the prefilter 21 in the prefilter unit 20 is replaced or cleaned. Then, the prefilter unit 20 after replacing or cleaning the prefilter 21 is returned to the circulation path, and the operation lever 80 is automatically or manually operated to retract the first water stop portion 22 (plug 65). While opening the unit water inlet 62, the 2nd water stop part 40 opens and normal operation is performed.

  As described above, according to the present embodiment, in the bath water cleaning apparatus 110, the first water stop portion 22 is disposed near the water inlet of the prefilter unit 20, so the prefilter 21 is replaced. Alternatively, even when the prefilter unit 20 is removed from the water absorption pipe 31 when cleaning or the like, the dirt adsorbed on the prefilter 21 is not returned to the bathtub 1 by preventing the backflow of the bath water in the prefilter unit. In addition, the prefilter 21 can be replaced. Further, from the position of the prefilter unit 20 described above, it is not necessary to put hands or arms into the bath water when replacing or cleaning the prefilter.

  In addition, when using the suction-and-discharge unit 310 as shown in FIG. 11, it is preferable that the water discharge port 16 is arrange | positioned with respect to the suction-and-discharge unit 310 so that it may become half or more of bath water height.

<Modification>
A modification of the present embodiment will be described with reference to FIG.

  FIG. 8 is a schematic diagram of a modified example of the bath water cleaning apparatus 110 according to the present embodiment. In the bath water cleaning apparatus 110 illustrated in FIG. 7, the pre-filter unit 20 is disposed outside the main body 10. On the other hand, in the modified example, as shown in FIG. 8, the pre-filter unit 20 may be arranged in the main body 10 to constitute the bath water cleaning device 120. Thereby, the apparatus which has come out of the bathtub 1 can be made into only the main body 10, the circumference | surroundings of a bathtub can be refreshed, and external appearance property etc. can be improved.

<Third Embodiment>
FIG. 9 is a schematic view of a bath water cleaning apparatus 130 according to the third embodiment of the present invention. In addition, a thick black arrow shows the flow of bath water. As shown in FIG. 9, the bath water cleaning device 130 has a water suction port 15 that sucks in the bath water in the bathtub 1, a main body 10 that processes the bath water sucked from the water suction port 15, and bath water that has been processed by the main body 10. And a water discharge port 16 that is returned to the bathtub 1 again. The water inlet 15, the main body 10, and the water outlet 16 are connected by a circulation path that is sequentially connected. Moreover, in this embodiment, the piping 41 which is a part of the water absorption pipe which connects the 2nd water stop part 40 and the pre filter unit 20 is a bellows shape, or the piping which consists of an inner pipe and an outer pipe from which a diameter differs, etc. It is composed of a pipe that can be expanded or contracted.

  The main body 10 includes a circulation pump 11 for circulating the bath water, a septic tank 12 for cleaning the bath water, a sterilizing unit 13 for sterilizing the bath water, and a heater 14 for heating the bath water after purification and sterilization treatment. . The circulation pump 11, the septic tank 12, the sterilization unit 13, and the heater 14 are also connected by a sequentially connected circulation path. In addition, about the component which attaches | subjects the same code | symbol as 1st, 2nd embodiment, since it has the same function, the detailed description is abbreviate | omitted.

In the bath water cleaning device 130, the prefilter unit 20 including the prefilter 21 and the first water stop portion 22 (plug 65) is provided in the circulation path between the water inlet 15 and the circulation pump 11. Deployed. Further, a second water stop 40 is disposed between the prefilter unit 20 and the circulation pump 11. In the present embodiment, the pre-filter unit 20 includes a handle portion 42 protruding from the bath water surface, and the pre-filter unit 20 is disposed at a position higher than the water discharge end surface of the water discharge pipe by pulling up the handle portion 42. can do.

  In this embodiment, the 1st water stop part 22 (plug 65) and the 2nd water stop part 40 are comprised by the non-return valve. When the operation of the main body 10 is stopped by using the check valve, the first water stop portion 22 (plug 65) is automatically closed by water pressure. Further, the second water stop portion 40 is also automatically closed when the operation of the main body 10 is stopped.

<How to exchange>
Next, a method for replacing the prefilter 21 will be briefly described. First, when the operation of the main body 10 is stopped, a second stop provided between the first water stop portion 22 (plug 65) in the prefilter unit 20 and the prefilter unit 20 and the circulation pump 11 automatically. The water part 40 is closed.

  Further, the prefilter unit 20 is removed from the circulation path, and the prefilter 21 in the prefilter unit 20 is replaced or cleaned. Then, the prefilter unit 20 after replacing or cleaning the prefilter 21 is returned to the circulation path, and the operation lever 80 is automatically or manually operated to retract the first water stop portion 22 (plug 65). While opening the unit water inlet 62, the 2nd water stop part 40 opens and normal operation is performed.

  As described above, according to the present embodiment, in the bath water cleaning apparatus 110, the first water stop portion 22 is disposed near the water inlet of the prefilter unit 20, so the prefilter 21 is replaced. Alternatively, when the pre-filter unit 20 is pulled up and the pre-filter unit 20 is removed from the water absorption pipe 31 when cleaning, the pre-filter is prevented by preventing backflow of the bath water in the pre-filter unit. The pre-filter 21 can be exchanged without returning the dirt adsorbed on 21 to the bathtub 1. Further, from the position of the prefilter unit 20 described above, it is not necessary to put hands or arms into the bath water when replacing or cleaning the prefilter.

<Fourth Embodiment>
A fourth embodiment of the present invention will be described with reference to FIG.

  The bath water cleaning apparatus 200 according to the present embodiment includes a mechanism for draining the bath water in the pre-filter unit 20 before removing the pre-filter unit 20 from the circulation path. In addition, since it has the same function about the component which attaches | subjects the same code | symbol as 1st, 2nd, 3rd embodiment, the detailed description is abbreviate | omitted.

  FIG. 10 is a schematic view of the bath water cleaning apparatus 200 according to the present embodiment. In addition, a thick black arrow shows the flow of bath water, and a white arrow shows the flow of air. As shown in FIG. 10, the bath water cleaning apparatus 200 includes a water suction port 15 that sucks in the bath water in the bathtub 1, a main body 10 that processes the bath water sucked from the water suction port 15, and bath water that is processed by the main body 10. And a water discharge port 16 that is returned to the bathtub 1 again. The water inlet 15, the main body 10, and the water outlet 16 are connected by a circulation path that is sequentially connected.

  In the bath water cleaning apparatus 200, a prefilter unit 210 including the prefilter 21 therein is disposed in the circulation path between the water suction port 15 and the circulation pump 11. The prefilter unit 210 is disposed in the circulation path between the water inlet 15 and the circulation pump 11 so that the prefilter 21 is located on the water surface 2 of the bathtub 1.

  In the present embodiment, the prefilter disposed under the water surface 2 is disposed on the water surface 2, so that the prefilter is not removed in water when the prefilter is cleaned, and is adsorbed on the prefilter. It is possible to prevent a part of the dirt from flowing into the water of the bathtub 1.

  Similar to the prefilter unit 20 of the first embodiment, the prefilter unit 210 includes a unit water inlet 62, a removable box-shaped front cover 50, a water inlet 61 through which bath water from the water inlet 15 passes, and a prefilter. A box-shaped rear cover 60 connected to a water outlet 63 for discharging the bath water that has passed through the unit 210 and the prefilter 21 are provided, and further, an air pipe 220 and a third provided near the prefilter unit 210. The water stop part 250 and the drain pipe 240 are connected.

  Although a perspective view of the pre-filter unit 210 is not shown, the shape may be the same as that of the pre-filter unit 20 of the first embodiment, or other shapes.

  The air pipe 220 is connected to a circulation path between the second water stop unit 40 and the prefilter unit 210, and feeds air taken in by an air intake unit (not shown) into the prefilter unit 210. An air check valve 230 is installed in the air pipe 220 and controls the inflow of air into the prefilter unit 210. The air check valve 230 is closed while the main body 10 is in operation, and the air check valve 230 is opened while the main body 10 is stopped. The air check valve 230 opens automatically or manually when the main body 10 stops, and closes automatically or manually when the main body 10 moves.

  The drain pipe 240 is connected to the vicinity of the bottom of the pre-filter unit 210 and discharges the bath water in the pre-filter unit 210. When the air check valve 230 of the air pipe 220 is opened and air is sent into the prefilter unit 210, the first water stop portion 22 is closed, so that the bath water does not flow back into the bathtub, and the drain pipe The bath water in the pre-filter unit 210 is discharged from 240. After the bath water in the prefilter unit 210 is discharged, the prefilter unit 210 is removed from the circulation path, and the prefilter 30 in the prefilter unit 210 is replaced or cleaned. The third water stop portion 250 is closed automatically or manually during operation of the main body 10 and is automatically or manually opened during stoppage.

  Therefore, by draining the bath water in the pre-filter unit 210 before removing the pre-filter unit 210, the bath water in the pre-filter unit 210 does not flow back to the bathtub 1, and the dirt adsorbed on the pre-filter is not in the bathtub 1. Prevents you from going into the bath water.

  Further, the pre-filter unit 210 may be disposed inside the circulation path. In this case, an opening / closing door or the like is required to attach / detach the pre-filter unit 210 to / from the circulation path. Furthermore, the pre-filter unit 210 may be disposed in the main body 10 as in the modification of the second embodiment.

  As described above, according to the present embodiment, by arranging the prefilter 21 on the water surface of the bathtub 1 in the bath water cleaning apparatus 200, the dirt adsorbed on the prefilter 21 is returned into the bathtub 1. Without replacement, the prefilter 21 can be replaced.

  Further, in the bath water cleaning apparatus 200, check valves are provided above and below the prefilter 21 to prevent backflow of the bath water from the main body, and the bath water in the unit can be drained before the prefilter unit 210 is removed. Thus, the backflow of the bath water in the prefilter unit 210 can be prevented, and the dirt adsorbed on the prefilter can be prevented from flowing out into the bath water in the bathtub 1.

  Further, when the air check valve 230 is actuated to open to the atmosphere, the second water stop portion 40 and the bath water in the prefilter unit 210 are transferred to the third water stop portion 250 provided with the drain pipe 240. The water is drained to the outside of the apparatus. Therefore, even if the prefilter unit 210 that has been emptied is removed and the prefilter 21 is replaced, the sewage due to the backflow is discharged outside the bathtub, so that the inside of the bathtub is not soiled.

  The embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to the embodiments, and includes designs and the like that do not depart from the gist of the present invention.

  Note that the method for removing the prefilter replacement is described in a program, and the described program is read into the bath water cleaning apparatus, whereby the bath water cleaning apparatus of the present invention can be realized. That is, when the user touches a predetermined button, the operation of the main body 10 is stopped, and when the operation of the main body 10 is stopped, the first water stop portion 22 (plug 65) in the prefilter unit 20 and the prefilter are automatically set. The 2nd water stop part 40 provided between the unit 20 and the circulation pump 11 closes. Further, the user removes the prefilter unit 20 from the circulation path, and replaces or cleans the prefilter 21 in the prefilter unit 20. Then, the prefilter unit 20 after replacing or cleaning the prefilter 21 is returned to the circulation path, and the operation lever 80 is automatically or manually operated to retract the first water stop portion 22 (plug 65). While opening the unit water inlet 62, the 2nd water stop part 40 opens and can perform a normal driving | operation.

DESCRIPTION OF SYMBOLS 1 Bathtub 2 Water surface 10 Main body 11 Circulation pump 12 Septic tank 13 Sterilization part 14 Heater 15 Water inlet 16 Water outlet 20 Prefilter unit 21 Prefilter 22 1st water stop part 31 Water absorption pipe 32 Water discharge line 40 2nd water stop Part 41 Piping 42 Handle part 50 Front cover 60 Rear cover 61 Water inlet 62 Unit water inlet 63 Water outlet 64 Unit water outlet 65 Plug 66 Pre-filter support plate 70 Mounting plate 71 Water absorption circulation path 72 Opening part 73 Drain circulation path 74 Opening part 80 Control lever 100 Bath water cleaning device 110 Bath water cleaning device 120 Bath water cleaning device 130 Bath water cleaning device 200 Bath water cleaning device 210 Pre-filter unit 220 Air pipe 230 Air check valve 240 Drain pipe 250 Third water stop

Claims (5)

A pre-filter unit used in a bath water cleaning device that takes in bath water from a bathtub, removes dirt from the taken bath water, and returns the bath water to the bath.
A water inlet for sucking in the bath water of the bathtub;
A prefilter that is disposed in the prefilter unit and removes dirt from the bath water that has entered from the water inlet;
A water outlet for discharging the bath water from which dirt has been removed by the pre-filter to the bath water cleaning device;
A water stop portion provided between the pre-filter and the water inlet;
A pre-filter unit for a bath water purifier. The pre-filter unit for the bath water cleaning device according to claim 1 is detachably provided, and a water absorption pipe that absorbs the bath water of the bathtub,
A circulation pump that is disposed downstream of the water absorption pipe and circulates the bath water;
A septic tank for purifying the bath water;
A sterilizing section for sterilizing the purified bath water;
A heating unit for heating the purified and sterilized bath water;
A water discharge line for returning the heated bath water to the bathtub;
A bath water cleaning apparatus comprising:   The bottom part of the said pre-filter unit for bath water cleaning apparatuses is arrange | positioned in the position higher than the position of the water discharge port of the said water discharge pipe | tube on the basis of the bottom face of the said bathtub. Bath water cleaning device. A portion of the water absorption conduit on the circulating pump side can be expanded or contracted, or bendable,
further,
A handle connected to the pre-filter unit for the bath water cleaning device;
With
4. The bath water cleaning apparatus according to claim 2, wherein the pre-filter unit for the bath water cleaning apparatus can be pulled up by pulling up the handle.   5. The bath water cleaning apparatus according to claim 4, wherein the water absorption conduit that can be expanded and contracted is accordion-shaped.

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