JPH07328344A - Circulating-way bath water cleaning apparatus - Google Patents

Abstract

PURPOSE:To effectively clean a filtering apparatus by installing an air tank to store air to be sent to the filtering apparatus, sending the air in the air tank to the filtering apparatus at the time of cleaning of the filtering apparatus and at the same time supplying water for cleaning. CONSTITUTION:An air pump 13 is driven to supply air to the inside of an air tank 9 through a connection inlet A3 and to store air in the inside. Once air is stored, the air pump 13 is stopped and a circulating pump 5 is started at high speed to pour bath tub water 2 of a bath tub 1 to the air tank 9 through a connection inlet A2 from a pipeline for back wash and through a switch valve 10. Consequently, the air in the air tank 9 is compressed by the poured bath tub water and, together with the bath tub water, the air flows out through a connection outlet A1 in the upper part of the air tank 9 and bath tub waterin which the compressed air is mixed passes the inside of a heater 17 and cleans the inside of the heater 17. Moreover the bath tub water in which the compressed air is mixed flows reversely in a filtration tank 8 through a connection inlet T2 and the reversely flowing water and air stir a filter medium in the inside of the filtration tank 8 and clean the material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circulating bath water purifying apparatus which sucks up and purifies bath water in a bathtub and returns the purified bath water to the bathtub again.

[0002]

2. Description of the Related Art A circulating bath water purifying apparatus is provided with a filtering device such as activated stone or activated carbon or a filter for removing impurities in the bath water of the bath, and is configured to filter the bath water by the filtering device. There is. After the filtration, the bath water is returned to the bath as it is, or the bath water is returned to the bath by a treatment such as sterilization or heating with a heater in a high-class machine. The filtration device usually comprises a filtration tank and a filter medium such as the activated carbon filled inside the filtration tank. However, the filtering device in such a purifying device has a problem that the filtering material in the filtering tank becomes clogged with clogging with the lapse of use time, which reduces the circulating amount of bath water and lowers the purifying ability. . In addition, stains in bath water also cause deterioration of thermal efficiency of the heater and the like. Therefore, conventionally, the filter medium is appropriately taken out from the filtration tank for cleaning, but there is a problem that the cleaning of the filter medium is troublesome and it is a dirty work, which is not so preferable. In order to remedy this drawback, there has already been proposed a purifying device capable of backwashing the bath water to wash the filter medium without manual labor.

[0003]

However, since the conventional washing of the filter medium merely backflows the bath water, there is a problem that the filter medium is not sufficiently washed for the following reason.
Firstly, if there is a heater or the like in the circulation path of the purifying device, the member of the heater becomes a conduit resistance and weakens the power of the bath water, so that sufficient cleaning power cannot be exerted. Second,
In particular, in the case of granular filter media, the filter media are in close contact with each other, and the backwashing water alone does not improve the cleaning effect and the dirt cannot be removed. The present invention aims to solve the above-mentioned problems of the prior art.

[0004]

In order to achieve the above object, the present invention circulates by circulating the bath water in a bathtub by pumping it up and sending it to a filtration device, filtering the dirt in the filtration device, and then returning the bath water back to the bathtub. An air tank for storing air to be sent to the filtration device is provided in a water bath water purification device, and when cleaning the filtration device, the air in the air tank is sent to the filtration device and the cleaning water is supplied. Is characterized by. Further, a water absorption pipe for pumping up the bath water of the bathtub, a circulation pump for sucking and circulating the bath water in the water absorption pipe, a filtering device for filtering the pumped bath water, and a filtration device for filtering the water. A fountain pipe for returning the bath water to the bath again, an air tank provided on the side of the fountain pipe of the filtration device, an air pump for supplying air to the air tank as needed, and a cleaning water for cleaning the air in the air tank. And a means for sending to the filtering device to wash the filtering device. Further, a heater for heating the bath water is provided between the filtering device and the air tank.

[0005]

By supplying the air in the air tank to the filtering device, the filter material in the filtering device moves, and the cleaning effect of the cleaning water increases. Further, since cleaning water containing air also passes through the heater, it is possible to clean the heater conduit.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of this circulating bath water purifying apparatus. The tip portion of the water absorption pipe 3 is inserted into the bathtub 1 so that the bath water 2 in the bathtub 1 is sucked by the circulation pump 5. The circulation pump 5 is controlled by the controller 16. Bath water 2 sucked by circulation pump 5
Is configured to enter from the port P1 of the switching valve 6, exit from the port P2, and be sent from the tank inflow pipe 7 to the filtration tank 8 through the connection port T1. A discharge pipe 15 is connected to the port P3 of the switching valve 6, and by switching the connection, the connection between the circulation pump 5 and the tank inflow pipe 7 and the connection between the tank inflow pipe 7 and the discharge pipe 15 as shown in FIG. It is configured to be able to. That is, the filtration tank 8
At the time of cleaning, the waste water that has cleaned the filtration tank 8 is made to flow from the tank inflow pipe 7 to the discharge pipe 15 and discharged. The switching valve 6 can be switched by a command from the control device 16.

A heater 17 is provided on the downstream side of the filtration tank 8, and the connection port T2 of the filtration tank 8 and the heater 17 are provided.
Is connected to the connection port H1. The heater 17 has a configuration in which a pair of heaters are arranged in series, and the connection port H
2 and the connection port H3 are connected to each other. By thus arranging the heaters 17 in series, the cleaning efficiency can be improved. An air tank 9 is further provided on the downstream side of the heater 17, and the connection port H4 of the heater 17 and the connection port A1 of the air tank 9 are connected. In the normal state, the bath water 2 simply passes through the air tank 9. An air pump 13 is connected to the air tank 9 through a check valve 14 at a connection port A3. When the filtration tank 8 is washed, air is stored in the air tank 9, and the air is stored together with washing water in the filtration tank. 8 is configured to blow. The check valve 14 is an air pump 13
This is to prevent the backflow of bath water to the. The air pump 13 is similarly controlled by the control device 16,
It operates when cleaning the filtration tank 8 and stores air in the air tank 9.

The connection port A2 of the air tank 9 is a switching valve 1
0 is connected to the fountain pipe 11. The switching valve 10 is normally connected to the ports P5 and P6,
The bath water 2 filtered by the filtration tank 8 is returned from the fountain pipe 11 into the bath 1. A backwash pipe 12 is connected to the port P4 of the switching valve 10, and the backwash pipe 12 is connected to the circulation pump 5. In the normal state, the switching valve 10 connects the outlet side of the air tank 9 with the fountain pipe 11.
However, at the time of cleaning, in response to a command from the control device 16, the ports P4 and P5 are connected as shown in FIG. 2, and the circulation pump 5 is connected to the outlet side of the air tank 9 through the backwash pipe 12. Bath water 2 connected to the
Is sent to the air tank 9 and is made to flow back into the filtration tank 8 together with the air stored in the air tank 9 to wash the filtration tank 8.

Although only the filtration by the filtration tank 8 may be performed, in this embodiment, the air filter 18, the ozonizer 19 and the thin tube 20 are provided, and ozone gas is supplied from the thin tube 20 to the fountain tube 1 except during the bathing time.
1 to sterilize the bath water. If the command from the control device 16 is output to the switching valve 6, the switching valve 10, the circulation pump 5 and the air pump 13 by a user's operation or a predetermined signal, for example, a signal for detecting clogging of the filtration tank 8. Good. In this embodiment, in the cleaning mode of the filtration tank 8, the switching valve 6 is used as described above.
Is switched so as to connect the tank inflow pipe 7 and the discharge pipe 15, and the switching valve 10 is switched so as to connect the circulation pump 5 and the air tank 9 through the backwash pipe 12. Further, the air pump 13 is operated to store air in the air tank 9 and the circulation pump 5 is operated at a high speed for a predetermined time for cleaning. Then, as will be described later, the cleaning operation is configured to be repeated a predetermined number of times.

In the above structure, the bath water 2 of the bath 1 is normally sucked from the water suction pipe 3 by the circulation pump 5 and flows from the port P1 of the switching valve 6 to the port P2. At this time, the port P4 of the switching valve 10 is in the closed position, and the bath water does not flow in this direction. Then, the bath water flows from the port P2 through the tank inflow pipe 7 into the inside of the filtration tank from the connection port T1 of the filtration tank 8 and is purified by the filter medium enclosed therein. The bath water filtered here exits from the connection port T2, is sent to the heater 17, is heated to a preset temperature, and is then sent to the air tank 9. The bath water flowing from the connection port A1 of the air tank 9 is connected to the connection port A1.
2 is discharged from port P5 of switching valve 10 to port P
6 and is returned from the fountain pipe 11 to the bathtub 1 for circulation. In the cleaning mode of FIG. 2, the circulation pump 5 is stopped by a command from the control device 16,
The switching valve 6 is switched so as to connect the port P2 and the port P3, and the tank inflow pipe 7 and the discharge pipe 15 are connected. At the same time, the switching valve 10 is switched so as to connect the ports P4 and P5 to form a path from the circulation pump 5 through the backwash pipe 12 to the air tank 9. At the same time, the air pump 13 operates to supply air from the connection port A3 of the air tank 9 to store air inside. When the air is stored, the air pump 13 is stopped, the circulation pump 5 is operated at a high speed, and the bath water 2 from the bath 1 is passed from the backwash pipe 12 through the switching valve 10 and the air tank 9 as shown in FIG. Pour water from the connection port A2. for that reason,
The air in the air tank 9 is compressed by the injected bath water, flows out together with the bath water from the connection port A1 in the upper part of the air tank 9, and the bath water mixed with the compressed air passes through the inside of the heater 17. The inside of the heater 17 is cleaned.
Then, the bath water mixed with air further flows back into the filtration tank from the connection port T2 of the filtration tank 8. The water and the air flowing back into the filtration tank 8 cause the filter material inside the filtration tank 8 to dance to be washed. Therefore, the filter medium in the filtration tank 8 is cleaned much more effectively than the conventional simple backflow. The dirty water after cleaning is discharged from the connection port T1 of the filtration tank 8 through the switching valve 6 and the discharge pipe 15. This wash is
The cleaning may be performed a predetermined number of times as necessary, and in this embodiment, the cleaning is automatically performed three times.

FIG. 3 shows a state when the jet mode is selected. In response to a command from the control device 16, the switching valve 6 brings the ports P1 and P2 into communication with each other and closes the port P3. At the same time, in the switching valve 10, the ports P4 and P6 are brought into the connected state, and the port P5 is closed. As a result, the flow of bath water to the filtration tank 8, the air tank 9, and the heater 17 is blocked, and the bath water pumped up by the circulation pump 5 passes from the backflow pipe 12 through the switching valve 10 and the fountain pipe 11 to the bathtub 1. Returned to. In this circulation path of the bath water, there is no passage through the filtration tank 8, the air tank 9, the heater 17 and the switching valve 6 which become pipe resistance,
Create a jet jet that matches the performance of the circulation pump 5
It can be obtained at exit 1.

FIG. 4 is a cross-sectional view showing the mechanical shapes of the filtration tank 8 and the air tank 9. As shown, the filtration tank 8 and the air tank 9 are connected by a U-shaped pipe, and a heater is connected to this pipe portion. 17 is provided. In the normal state, the bath water 2 from the filtration tank 8 simply passes through the air tank 9, but at the time of cleaning the filtration tank 8, the air filled in the air tank 9 together with the bath water 2 is below the filtration tank 8. It is supposed to flow back from. FIG. 5 is a cross-sectional view showing the internal structure of the filtration tank 8, which is filled with a granular filter medium such as activated carbon, and water flows backward together with the air in the air tank 9 from the lower side to make the granular filter medium dance. The cleaning is performed effectively.

The operation will be described with reference to the flowchart of FIG. When there is a command to wash (backwash) the filtration tank 8 (step S1), the circulation pump 5 is turned off (step S).
2) The switching valves 6 and 10 are switched to the cleaning position described above (step S3). Then, the counter X is cleared (step S4), the air pump 13 is turned on for a predetermined time (50 seconds in this example), and air is stored in the air tank 9 (step S5). Next, the circulation pump 5 is turned on at a high speed for a predetermined time (10 seconds in this example), the air and the bath water 2 are caused to flow back to the filtration tank 8 as described above, the filtration tank 8 is washed, and the waste water is discharged from the drain pipe 15. To be discharged (step S6). Then, 1 is added to the counter X (step S7), and the above operation is repeated three times (step S8). This completes the cleaning (step S9) and returns the switching valve 6 and the switching valve 10 to the positions of the normal circulation mode (step S10).

According to the above-described embodiment, the air and water stored in the air tank 9 are caused to flow back to the filtration tank 8 at a high speed rather than simply to flow back the water. It is moved by air, and this movement effectively cleans the filter media. Also, the heater 17 can be cleaned. Further, if the switching valves 6 and 10 are set as shown in FIG. 3, a jet jet can be obtained.

[0015]

As described above, in the circulating bath water purifying apparatus of the present invention, the bath water in the bath is pumped up and sent to the filtering device, the dirt is filtered in the filtering device, and then the bath water is returned to the bath again. In the circulating bath water purifying device, an air tank for storing air to be sent to the filtering device is provided, and the air in the air tank is sent to the filtering device at the time of cleaning the filtering device and the cleaning water is supplied. Therefore, it becomes possible to effectively clean the filter device. Further, the invention of claim 3 has an effect that the heater can be cleaned.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a block diagram showing a flow of water in a cleaning mode according to an embodiment of the present invention.

FIG. 3 is a block diagram showing a flow of water in a jet mode according to an embodiment of the present invention.

FIG. 4 is a schematic cross-sectional view showing a mechanical configuration of a filtration tank 8 and an air tank 9 in one embodiment of the present invention.

FIG. 5 is a sectional view of a filtration tank 8 according to an embodiment of the present invention.

FIG. 6 is a flowchart showing the operation of the embodiment of the present invention.

[Explanation of symbols]

1: Bathtub, 2: Bath water, 3: Water absorption pipe, 4: Check valve, 5:
Circulation pump, 6: Switching valve, 7: Tank inflow pipe, 8: Filtration tank, 9: Air tank, 10: Switching valve, 11: Fountain pipe, 12: Backwash pipe, 13: Air pump, 14: Check valve , 15: discharge pipe, 16: control device, 17: heater, 1
8: Air filter, 19: Ozonizer, 20: Capillary tube.

Claims (3)

[Claims] 1. A circulating bath water purifying apparatus which pumps up bath water from a bathtub and sends it to a filtering device, filters dirt in the filtering device, and then returns the bathwater to the bathtub again. A circulating-type bath water purifying apparatus, which is provided with an air tank for storing the water, and supplies the cleaning water while supplying the air in the air tank to the filtering apparatus at the time of cleaning the filtering apparatus. 2. A water suction pipe for pumping up bath water in a bathtub, a circulation pump for sucking and circulating the bath water in the water suction pipe, a filtering device for filtering the pumped bath water, and the filtering device. Fountain pipe for returning the bath water filtered by the filter to the bathtub again, an air tank provided on the fountain pipe side of the filtering device, an air pump for supplying air to the air tank as necessary, and an air tank for the air tank. A circulating bath water purifying apparatus comprising: means for sending air together with washing water to a filtering device to wash the filtering device. 3. The circulating bath cleaning apparatus according to claim 2, wherein a heater for heating the bath water is provided between the filtering device and the air tank.