JPH09299720A - Method and device for washing tank filter of bathtub hot water circulating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily wash filter mediums at low cost. SOLUTION: Before a screw thread D for air vent provided on the upper cover of the tank filter C is loosened to make the pressure in the tank filter C atmospheric, a hand air pump 40 is connected to a tank filter C through a check valve 10 and furthermore a hose H for drainage is connected to a discharge port 22 in a hot water suction/discharge part 20. Next, the hand air pump 40 is manually operated to open the check valve 10 by air pressure and to allow air to flow between filter mediums in the tan filter 40 from below, allowing the flow stuck on the filter mediums to be removed. Then, the air is released to the outside through the screw thread D for air vent. After the filter mediums are washed, the hand air pump 40 is removed and the check valve 10 is closed and furthermore the screw thread D for hair vent is closed. In this state, by restarting a pump in a body part 30 is restarted, the bathtub hot water is drawn up from a suction port 21, is passed through the washed tang filter and is discharged to outside the bathtub through the hose H together with drainage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cleaning a filter tank in a hot water circulating device for bath and a cleaning device therefor.

[0002]

2. Description of the Related Art Various types of hot water circulating devices for bathtubs of this kind have been developed and put on the market. As an example, a hot water circulation device for a hot water bath is composed of a main body containing a filtration tank filled with a filter material and a hot water intake / exhaust part housed in a detachable jetter case on the main body. During the circulating filtration operation of, the hot water is sucked by a pump and pumped into the filter tank, and the hot water as the circulating water is sprinkled on the filter material loaded in the filter tank to pass through the filter material, and the dirt is polluted during the passage. The warm water is filtered, returned to the bath and recycled. Then, when cleaning the filter medium contaminated by such a filtering action, the flow path switching valve such as a five-way valve for switching the flow of hot water is switched to remove the hot water in the bathtub sucked by the pump. After supplying the filter medium from the bottom of the filter medium into the filter tank and allowing the filter medium to flow backward, the filter medium is washed, and then the waste water is drained to the outside of the bath. At this time, the air sent from the compressor is blown toward the filter medium from the air diffuser pipe below the filter medium and is passed between the filter medium to promote the removal of dirt adhering to the filter medium. .

[0003]

In such a device,
Although the cleaning effect of the filtration material is high, the flow path switching valve must be arranged in order to use it once every several months. When cleaning, the flow path switching valve must be energized to switch the flow path, electrical equipment is required, measures to prevent leakage are indispensable, and the cost of the entire hot water circulation device increases. In addition, when cleaning the dirt on the filtration material, the hot water in the bathtub is used to reverse the flow of the hot water in the filtration tank and drain it to the outside of the bathtub. It has the drawbacks that the filter material cannot be sufficiently washed, a costly flow path switching valve is required, and failure is likely to occur. An object of the present invention is to provide a method for easily cleaning a filter medium at a low cost and an apparatus therefor on the market. Another object of the present invention is to provide to the market a method for cleaning a filter tank in a low-cost hot water circulating device for a bath and a cleaning device for the same, which can wash the filter material without using hot water in the bath. That is.

[0004]

In order to solve the above-mentioned problems, the specified invention is to guide the hot water in the bath to the upper part of the filter tank in normal times and pass the hot water through the filter medium loaded in the filter tank. After removing dirt and washing, the hot water is returned from the lower part of the filtration tank into the bath for circulation and used, and when the filtration medium is washed, the circulation of the hot water in the bath is temporarily stopped and In the hot water circulation device for a bath, characterized in that air is supplied from the device to remove dirt adhering to the filter medium, and then the circulation is restarted to drain dirty water in the filtration tank out of the bath. This is a method for cleaning the filtration tank.

In order to solve the above-mentioned problems, in the related invention, the hot water in the bath is normally guided to the upper part of the filter tank and passed through the filter medium loaded in the filter tank to remove dirt from the hot water and clean it. After that, this hot water is returned from the lower part of the filtration tank into the bath and circulated for use, and at the time of cleaning this filtering material, the circulation of the hot water in the bath is stopped, and air is supplied together with the wash water from the bottom of the filtration bath, This is a method for cleaning a filter tank in a hot water circulation device for a bath, characterized in that dirt attached to this filter material is removed and drained to the outside of the filter tank.

In order to solve the above problems, the related invention is
During normal times, the hot water in the bath is guided to the upper part of the filtration tank, passed through the filter material loaded in the filtration tank to remove dirt and clean the hot water, and then returned to the same bath for circulation and use. ,
At the time of cleaning the filter medium, the circulation of the hot water in the bathtub is stopped, the cleaning water is supplied from below the filter tank, the dirt adhering to the filter medium is removed, and the water is drained to the outside of the filter tank. .

In order to solve the above-mentioned problems, in this cleaning method, the hot water suction / discharge part of the hot water circulation device is installed in the hot water of the bathtub, and the main body part of the hot water circulation device having the filtration tank inside is placed outside the bathtub. The hot water in the hot water intake / exhaust part is pumped up, the water in the bathtub is guided to the upper part of the filtration tank, filtered, and the purified hot water is discharged into the bathtub from the hot water intake / exhaust part in the bath for circulation. It is preferably characterized in that it is used.

In order to solve the above-mentioned problems, in this cleaning method, hot water is introduced from the suction port provided in the bathtub to the upper part of the filtration tank for filtration, and then returned from the discharge port provided in the bathtub into the bath for circulation. In some cases.

In order to solve the above-mentioned problems, a related invention is a cleaning device for a filtration tank in a bathtub hot water circulation device, characterized in that the method according to claim 1, 2, 3 or 4 is implemented.

In order to solve the above-mentioned problems, a related invention is a cleaning device for a filtration tank in a hot water circulating device for bath, which is characterized by carrying out the method according to claim 1, 2, 3 or 5.

In order to solve the above-mentioned problems, a cleaning air supply member is detachably provided in the filtration tank at the bottom of the cleaning device via a check valve that opens by air pressure only during cleaning. There is.

In order to solve the above-mentioned problems, a cleaning air supply member is detachably arranged at the bottom of the filtration tank in this cleaning device through a check valve that opens by air pressure only during cleaning. A feature is that a wash water supply pipe for supplying water to the filtration tank is detachably connected to the discharge port of the filtration tank.

In order to solve the above-mentioned problems, a cleaning water supply pipe is detachably arranged at the bottom of the filtration tank in this cleaning device through a check valve that opens with cleaning water pressure only during cleaning. is there.

In order to solve the above-mentioned problems, the cleaning air supply member in this cleaning device is a manual air pump,
Preferably, it is one of a foot-operated air pump, an air-filled bag, an air cylinder, a compressor, and a blower.

In order to solve the above-mentioned problems, an air diffuser is provided in the bottom of the filtration tank in the cleaning device, the air diffuser communicating with the cleaning air supply member through a check valve that is opened by air pressure only during cleaning. Is desirable for cleaning the filter medium.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 This form is a typical embodiment of the apparatus invention according to claims 6 and 8 for carrying out the method invention according to claims 1 and 4.
In FIG. 1, A is a cleaning device for the filtration tank C in the hot water circulating device B for bath. This cleaning device A is equipped with this filtration tank C
A foot-operated air pump 40, which is a type of filtration air supply member, is detachably attached to the bottom of the valve via a check valve 10 (see FIGS. 1 and 4). A manual air pump, an air-filled bag, an air cylinder, a compressor, and a blower may be used instead of the foot-operated air pump 40. The check valve 10 is normally closed and opened by air pressure only during cleaning. An air diffuser 50 communicating with the foot-operated air pump 40 via the check valve 10 is arranged in the bottom of the filtration tank C (see FIGS. 1 and 4). The air diffuser 50 includes a tube 51 at the center.
A large number of holes 5 in the upper drawing of the pipe 52 extending radially from
Even if 3 are arranged at intervals along the axial direction and inject air upward from these holes 53 (see FIG. 6), a disc 55 having a large number of holes 54 penetrating the upper and lower surfaces is provided.
(See FIG. 8). Although the holes 53 formed in the pipe 52 in FIG. 6 face upward, the present invention is not limited to this, and the air injection holes are formed in two rows on the upper peripheral surface of one pipe 52 by changing the air injection direction. The air diffuser 50 may be formed by forming 53a and 53b (see FIG. 7).

The operation of the cleaning apparatus A will be described together with the method of using it. The hot water inlet / outlet part 20 of the hot water circulating device B is installed in the hot water of the bathtub, and the main body part 30 of the hot water circulating device B having the filtration tank C and a pump (not shown) therein is installed outside the bathtub. The front case of the main body 30 is omitted in FIG. 1 to show the inside of the main body 30. During normal times, the pump is started, the hot water in the bathtub is pumped up from the suction port 21 in the hot water suction / discharge section 20, guided to the upper part of the filtration tank C, filtered, and then purified hot water is filtered from the bottom of the filtration tank C. It is discharged from the discharge port 22 of the hot water suction / discharge section 20 into the bath and is circulated for use. At this time, the check valve 10 is in a closed state, and hot water is not discharged through the check valve 10. When cleaning the filter medium loaded in the filter tank C, the operation of the pump is stopped and the circulation of hot water in the bath is temporarily stopped. At this time, since a second check valve (not shown) is provided on the primary side of the pump, hot water does not flow out from the primary side of the pump.

Next, a check valve 10 is provided at the bottom of the filtration tank C.
The foot-operated air pump 40 is connected via. Further, a drain hose H is connected to the discharge port 22 of the hot water intake / discharge section 20. Needless to say, the height of the tip of the hose H is maintained at the height of the upper lid to prevent the hot water in the filter tank C from flowing out from the discharge port 22. This hose H
In some cases, the discharge port 22 may be capped with D1. In this state, the air bleeding screw D is removed from the air bleeding hole C1 provided in the upper lid of the filtration tank C to bring the pressure in the filtration tank C to atmospheric pressure. As the drain hose H, a shower hose H1 of a massage tool M for massaging the bather's arm and shoulder with hot water may be used. Further, the removed screw D for removing air may be used as the plug D1. This foot-operated air pump 40 is operated by a foot, the check valve 10 is opened by air pressure, and each pipe 52 of the air diffuser 50 is opened.
The air is ejected in the form of bubbles from the holes 53 (53a, 53b) (see FIGS. 6 and 7) or the holes 54 of the disk 55 (see FIG. 8), and the air is blown from below between the filter media in the filtration tank C. sink,
After the dirt adhering to the filter medium is separated and the clogging is removed, this air is released to the outside through the air vent hole C1 of the upper lid. The air diffuser 50 may not be arranged. After washing the filter medium in this way, the manual air pump 40 is removed, the check valve 10 is closed, and the screw D for bleeding air is closed. In this state, the main body 30
Restart the pump inside and take the hot water in the bathtub into the suction port 2
It is pumped up from No. 1 and passed through the upper portion of the filter tank from which the clogging is removed, and is drained to the outside of the bath through this hose H together with the dirty water generated by the cleaning. After the drainage is completed, the hose H is disconnected and the normal operation is resumed. In the case where the air diffuser 50 is the disk 52, hot water filtered without trouble is discharged from the discharge port through a large number of holes of the disk 52, and the air diffuser 50 is the pipe 51. Than,
When the contact time between the hot water and the filter medium is long and the disk 52 is made of copper, sterilization of the hot water temperature can be expected to some extent. The circulation of hot water is not limited to this mode. Hot water is sucked from the suction port provided on the side wall of the bathtub, filtered through the upper part of the filter tank, then discharged from the lower part of the filter tank C, and further discharged from the side wall of the bathtub. It may be returned to the bathtub from the outlet (corresponding to the representative embodiments of the invention described in claims 5 and 7).

Embodiment 2 This form is a typical embodiment of the apparatus invention according to claims 6 and 10 for carrying out the method invention according to claims 3 and 4.
The structure different from that of the first embodiment is as follows. A wash water supply pipe 61 for supplying tap water, which is a kind of wash water, from the bottom of the filter tank C through a check valve 60 that opens by tap water pressure only during cleaning is detachably connected to the filter tank C. .
In addition, the same reference numerals as those in the first embodiment have the same configurations and operations. The operation of this mode is almost the same as that of the first embodiment. The difference is that the screw D for bleeding air is removed, the sewage drainage pipe 62 is connected to the air bleeding hole C1 of the upper lid, and the plug D1 is attached to the discharge port 22. In this state, when washing the filter medium, wash water is supplied from the wash water supply pipe 61 to wash the filter medium, and the washed wastewater is discharged from the wastewater drain pipe 62 to the outside of the bath. At this time, the pump is not driven, and the waste water is discharged from the waste water drain pipe 62 by the pressure of the wash water. That is, the hot water in the bathtub is not drained at all.
A hose H may be connected to the discharge port 22 instead of the plug D1. Foot-operated air pump 4 instead of tap water
0 may be used to pump up the hot water U in the bathtub and supply it to the filter tank C as wash water via the wash water supply pipe 61 and the check valve 10 (see FIG. 5).

Embodiment 3 This embodiment is a typical embodiment of the device invention according to claims 6, 9, 11 and 12 for carrying out the method invention according to claims 2 and 4. The configuration different from that of the first embodiment is the filtration tank C.
A foot-operated air pump 4 which is a kind of cleaning air supply body through a check valve 10 which is opened by air pressure only at the bottom of the cleaning machine
0 is detachably provided, and a hose H2 which is a wash water supply pipe for supplying wash water (for example, tap water) to the filter tank C is detachably connected to the discharge port 22. In addition, the same reference numerals as those in the first embodiment have the same configurations and operations. The operation of this mode is almost the same as that of the first embodiment. The differences are as follows. The hot water circulating unit B of the hot water circulating unit B is installed in the hot water of the bathtub, and the hot water circulating unit B has a filtration tank C and a pump inside.
The main body part 30 is installed outside the bathtub. During normal times, the pump is started, the hot water in the bathtub is pumped up from the suction port 21 of the hot water suction / discharge section 20, guided to the upper part of the filtration tank C, filtered, and then the purified hot water is filtered from the lower part of the filtration tank C. It is discharged from the discharge port 22 of the hot water suction / discharge section 20 into the bath and is circulated for use. At this time, the check valve 10 is in a closed state, and hot water is not discharged through the check valve 10.

At the time of cleaning the filter medium loaded in the filter tank C, the operation of the pump is stopped and the circulation of the hot water in the bath is temporarily stopped. Next, the air vent hole C1 of the upper lid
The wastewater drainage pipe 62a is connected to. Although the sewage water distribution pipe 62a is attached to the air vent hole C1 in this embodiment using the screw D, the present invention is not limited to this. A foot-operated air pump 40 is connected to the filtration tank C via the check valve 10. Further, the hot water intake / discharge section 2
The hose H2 is connected to the discharge port 22 at 0. Needless to say, the height of the tip of the hose H2 is maintained at about the height of the upper lid to prevent the hot water in the filtration tank C from flowing out. In this state, the air bleeding screw D is removed from the air bleeding hole C1 provided in the upper lid of the filtration tank C to bring the pressure in the filtration tank C to the atmospheric pressure. As the hose H2, a shower hose H1 of a massage tool M for massaging the bather's arm and shoulder with hot water may be used. This foot-operated air pump 40 is operated with a foot, the check valve 10 is opened by air pressure, air is blown out from the air diffuser 50 in a foam shape, and tap water which is a kind of wash water is discharged from the hose H2. Air and tap water are supplied from below between the filter media in the filter tank C to remove dirt adhering to the filter media, and the waste water is drained to the outside through the waste water drain pipe 62 together with air. After washing the filter medium in this way, the foot-operated air pump 40 is removed, the check valve 10 is closed, and the screw D for bleeding air is closed. Further, the hot water intake / discharge section 2
The hose H2 is removed from the discharge port 22 at 0.
After drainage is completed, return to normal operation.

[0022]

According to the inventions of claims 1, 2, 4, and 5, the air is used to generate bubbles without using a flow path switching valve for switching the flow of hot water as in the prior art. The buoyant force causes the filter material to shake, causing dirt to float with the air,
It is possible to easily remove dirt or clogging of the filter material. According to the third, fourth and fifth aspects of the present invention, it is possible to easily remove the dirt on the filter medium by using the wash water without using the flow path switching valve. The device invention according to claims 6 to 10 can implement the method according to the corresponding claim. According to the eleventh aspect of the invention, since the manual air pump, the foot-operated air filling pump, the air filling pack, the air cylinder, the compressor, and the blower are used as the cleaning air supply body, the filter medium can be easily cleaned. Particularly, in the inventions according to claims 2 and 3, when the circulation of hot water in the bathtub is stopped and tap water is supplied to the filter tank as washing water, the hot water in the bathtub should not be used at all for washing the filter medium. This saves the hot water in the bathtub. According to the twelfth aspect of the invention, since the air diffuser communicating with the cleaning air supply body via the check valve is arranged in the bottom portion of the filtration tank, the eighth, ninth, and first aspects are provided.
In addition to the effect of the invention described in 1, it is possible to supply air evenly in the form of bubbles from below the filter during cleaning.

[Brief description of drawings]

FIG. 1 is a partially cutaway schematic perspective view of a first embodiment.

FIG. 2 is a schematic perspective view of a second embodiment.

FIG. 3 is a partially cutaway schematic perspective view of a third embodiment.

FIG. 4 is a schematic front view showing a check valve portion of FIG. 1.

5 is a schematic perspective view showing a modified example of FIG.

FIG. 6 is a perspective view showing an example of an air diffuser.

FIG. 7 is a perspective view showing a modified example of FIG.

FIG. 8 is a perspective view showing an air diffuser different from that in FIG.

[Explanation of symbols]

 40 foot type air pump

Claims (12)

[Claims] 1. In normal times, the hot water in the bath is guided to the upper part of the filter tank, passed through a filter medium loaded in the filter tank to remove dirt from the hot water and wash it, and then the hot water is passed through the filter tank. It is returned to the bath from the lower part and circulated for use. When cleaning this filter medium, the circulation of the hot water in the bath is temporarily stopped, and air is supplied from below this filter tank to remove dirt adhering to the filter medium. After that, the circulation is restarted to drain the dirty hot water in the filtration tank to the outside of the bathtub. 2. In normal times, the hot water in the bath is guided to the upper part of the filter tank, passed through a filter material loaded in the filter tank to remove dirt from the hot water and clean the water, and then the hot water is stored in the filter tank. It returns to the bath from the lower part and is circulated for use. When cleaning this filter medium, stop the circulation of the hot water in the bath and supply air with the wash water from the bottom of the filter tank to remove the dirt adhering to this filter medium. Then, the method for cleaning the filtration tank in the hot water circulation device for bathtub is characterized in that the water is drained to the outside of the filtration tank. 3. In normal times, the hot water in the bath is guided to the upper part of the filter tank, passed through a filter material loaded in the filter tank to remove dirt from the hot water and clean it, and then the hot water is put in the same bath. When the filter medium is washed and recycled, the circulation of hot water in the bathtub is stopped, cleaning water is supplied from below the filter tank to remove dirt adhering to the filter medium, and drained to the outside of the filter tank. A method for cleaning a filtration tank in a hot water circulating device for a bath, comprising: 4. A hot water intake / exhaust part of the hot water circulation device is installed in hot water of a bathtub, and a main body part of the hot water circulation device having a filtration tank therein is installed outside the bathtub, and suction in the hot water intake / exhaust part is performed. 2. The hot water in the bathtub is pumped from the mouth, guided to the upper part of the filtration tank, filtered, and the purified hot water is discharged into the bathtub from the discharge port of the hot water suction / discharge section for circulation and use. 2. A method for cleaning a filter tank in the hot water circulation device for a bath according to 2 or 3. 5. The hot water is introduced from the suction port provided in the bathtub to the upper part of the filtration tank for filtration, and then returned from the discharge port provided in the bathtub into the bath for circulation and use. A method for cleaning a filter tank in the hot water circulating device for a bath according to the above. 6. A cleaning apparatus for a filtration tank in a bath water circulating apparatus, characterized in that the method according to claim 1, 2, 3 or 4 is carried out. 7. A cleaning device for a filter tank in a hot water circulating device for bath, which is characterized by carrying out the method according to claim 1, 2, 3 or 5. 8. The bath according to claim 6 or 7, wherein a cleaning air supply member is detachably provided at the bottom of the filtration tank through a check valve which is opened by air pressure only during cleaning. Cleaning device for filter tank in hot water circulation system. 9. A cleaning air supply member is detachably provided at the bottom of the filtration tank through a check valve that is opened by air pressure only during cleaning, and the cleaning water is supplied to the filtration tank. The cleaning device for a filtration tank in a hot water circulation device for bath according to claim 6 or 7, wherein a supply pipe is detachably connected to a discharge port of the filtration tank. 10. The bath according to claim 6, wherein a wash water supply pipe is detachably provided at the bottom of the filtration tank through a check valve which is opened by the wash water pressure only at the time of washing. Cleaning device for filter tank in hot water circulation system. 11. The cleaning air supply body is one of a manual air pump, a foot-operated air pump, an air filling bag, an air cylinder, a compressor, and a blower. Cleaning device for filter tank in hot water circulation device for bathtub. 12. An air diffuser is provided in the bottom of the filtration tank, the air diffuser being in communication with the cleaning air supply member through a check valve that opens by air pressure only during cleaning. A cleaning device for a filtration tank in the hot water circulation device for bath according to 8, 9, or 11.