JPH0642729Y2 - Bath water filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a bath water filtering device.

(Prior Art) FIG. 3 is a circuit diagram of a bath water filtering device added to a conventional bubble bath device. 1 is a bathtub, 2 is a suction port, 3 is a foam nozzle, 13 is a shoulder nozzle, 4 is a pump, 5 is bath water sucked by the pump 4 and is supplied by opening the opening / closing valve 14 to the foam nozzle 3 and the shoulder nozzle 13. It is a circulation circuit. Reference numeral 6 denotes a filtration circuit that branches from the discharge side of the pump 4 of the circulation circuit 5 and joins with the suction side thereof. An air separator 8 is provided on the primary side of the filter 7 of the circuit 6 and a first three-way valve 9 is provided. , A second three-way valve 10 is provided on the secondary side of the filter 7, and a drainage channel 11 is provided on the first three-way valve 9.
Bypass passages 12 connected to the air separator 8 are connected to the second three-way valves 10, respectively.

In such a configuration, when the operation switch is turned on after turning on the power of the system, a standby state is set. When the foam switch is turned on in such a state, the opening / closing valve 14 is opened and the bath water is discharged from the discharge side of the pump 4 to the foam nozzle 3. While being supplied, a part of the water flows to the filter 7 and is filtered as indicated by the solid arrow, and the treated bath water joins the circulation circuit 5 on the suction side of the pump 4. Further, when the filter 7 becomes significantly clogged and the backwashing of the filter 7 becomes necessary, when the backwashing switch is turned on in the standby state, the first three-way valve 9 and the second three-way valve 10 are switched. The filter material in the filter 7 is washed as indicated by the broken line arrow.

(Problems to be Solved by the Invention) In the above-described configuration of the conventional example, when the foam switch is turned off, the first three-way valve 9 and the second three-way valve 10 are stopped in the filtration mode. When the operation switch is turned off in this state and the power is turned off and left unused for a long period of time, there is a problem that odor enters the bathtub 1 from the inside of the filter 7 in which bacteria have grown and the bathroom is filled with unpleasant odor. When bathing again, there was a problem that the dirty water in the filter 7 was mixed into the bath water, and the bath water became extremely unclean.

(Means for Solving the Problem) The present invention is intended to solve the problems of the conventional example. Therefore, in the present invention, the suction port and the discharge port provided in the bathtub are not operated after the operation switch is turned on and off. A filtration circuit is provided, which is connected by a circulation circuit provided with a pump driven by the operation of turning on and off a predetermined switch, and which is provided with a filter that branches from the pump discharge side of the circulation circuit and merges again with the pump suction side. The filtering circuit is provided with valve means for disconnecting the filtering circuit from the circulation circuit by switching off the operation switch and for connecting the filtering circuit to the drainage channel.

(Operation) According to the configuration of the present invention, after the operation switch is turned on, for example, during the foam operation in which the foam switch is turned on, the pump is driven and the filtering circuit from the pump discharge side to the pump suction side via the filter is provided. Is formed, and when the operation switch is turned off after the end of the foaming operation, the filter and the circulation circuit are cut off, the filter is connected to the drainage path, and the communication between the filter and the bath is cut off, and The inside of the filter is drained.

(Embodiment) FIG. 1 is a circuit diagram showing an embodiment of the present invention, in which the same components as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted. The difference in configuration between this embodiment and the conventional example is the filtering circuit.
15, the filter circuit 15 has an opening / closing valve 16 in the primary side circuit and a three-way valve in the secondary side circuit of the filter 7 containing a large number of granular filter media.
17 are installed. The three-way valve 17 switches between a state in which the secondary side of the filter 7 communicates with the suction side of the pump 4 (during filtration) and a state in which the secondary side of the filter 7 communicates with the drainage channel 18. 19
Is an air charge valve attached to the filter 7.

In the above configuration, when the system power is turned on and the operation switch is turned on, the on-off valve 16 is opened and the three-way valve 17 is switched to the filtering direction (standby state). Then, when the foam switch or shoulder switch is turned on, the pump 4
The bath water is supplied to the foam nozzle 3 or the shoulder nozzle 13 by the driving of, and at the same time, a part of the bath water flows through the filter 7 and is purified. The foaming operation or the shoulder operation is stopped by turning off the foaming switch or the shoulder switch. When the bath is finished and the operation switch is turned off, that is, the standby state is released, the on-off valve 16 is closed and the three-way valve 17 causes the secondary side of the filter 7 to drain the drainage channel 18.
The filter 7 is switched to communicate with the filter 7, the inside of the filter 7 is drained, and the communication between the filter 7 and the circulation circuit 5 is cut off.

FIG. 2 shows another embodiment of the present invention. In the description of the same example, the same components as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted. That is, the difference between this embodiment and the conventional example is that in this embodiment, the three-way valve 19 'for connecting the secondary side of the normal filter 7 to the second three-way valve 10 is provided between the filter 7 and the second three-way valve 10.
And a drainage path 20 is connected to the three-way valve 19 '.

With this configuration, when the operation switch is turned off as described above,
The first three-way valve 9 is switched to the backwash state, and the three-way valve 19 'is switched to the state in which the secondary side of the filter 7 is communicated with the drainage passage 20.
Therefore, by performing such switching, the filter 7
The communication between the circulation circuit 5 and the circulation circuit 5 is cut off and the filter 7
The inside is drained.

(Effect of the Invention) As described above, according to the present invention, when not in use, the communication between the filter and the circulation circuit is interrupted in association with the non-use operation, so that the odor enters the bathroom from the filter. There is no.
In addition, since the inside of the filter is automatically drained, the growth of bacteria in the filter can be suppressed, and the bath water can be prevented from being contaminated during the next use. Further, it has an effect that the filtering device can be installed even in the construction site where the drainage from the filtering device is impossible in the bath.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an embodiment of the present invention, FIG. 2 is a circuit diagram showing another embodiment of the present invention, and FIG. 3 is a circuit diagram showing a conventional example. 1 ... Bathtub 2 ... Suction port 3 ... Discharge port (foam nozzle) 4 ... Pump 5 ... Circulation circuit 15 ... Filtration circuit 16 ... Open / close valve (valve means) 17 ... Three-way switching valve (valve means) ) 9 …… First three-way valve (valve means) 19 ′ …… Three-way switching valve (valve means) 18 …… Drainage channel

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A suction port and a discharge port provided in a bathtub are connected to each other by a circulation circuit provided with a pump driven by turning on and off a predetermined switch after turning on and off an operation switch, and from a pump discharge side of the circulation circuit. A filtering circuit having a filtering device that branches and joins the pump suction side again is provided, and the filtering circuit is cut off from the circulation circuit by operating the operation switch and the filtering device is connected to the drainage channel. A bath water filtering device, characterized in that it is provided with a valve means for urging.