JPH0427595Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The invention is based on electrolysis of bath water.
This invention relates to a device for improving the quality of bath water that has a hot spring effect.

(Prior Art) Conventionally, there are artificial hot spring devices that use acidic or alkaline water produced by electrolytically treating bathtub water as bathing water and are expected to produce a hot spring effect.

(Problem to be solved by the invention) When obtaining acidic water or alkaline water by such electrolysis, it would be convenient if acidic or alkaline water could already be supplied when hot water is supplied from the water heater to the bathtub. Even if you reheat the water after supplying a predetermined amount of hot water, it is necessary to adjust the pH to quickly reach the required pH value.

In addition, if the PH value is insufficient even after electrolytic treatment for both hot water supply and reheating, it will be necessary to compensate for the shortfall in the expected PH value even after the automatic operation of the water heater with reheating function is stopped.

Furthermore, when the amount of hot water supplied to the bathtub is increased or decreased, the PH value will vary depending on the amount of water in the bathtub. It would be convenient if this could be adjusted to a constant PH value regardless of the amount of water in the bathtub.

Furthermore, even when a bubble bath device is attached, it is necessary to be able to adjust the pH during hot water supply, during reheating, and after reheating.

(Means for Solving the Problems) In order to solve each of the above-mentioned problems, the present invention connects the hot water supply path from the water heater with reheating function to the circulation path of the bathtub, and supplies hot water to the bathtub via the bathtub. So,
An electrolytic cell is provided in the circulation path of this bathtub.

Further, even after the automatic reheating operation for supplying hot water to the bathtub is completed, the circulation pump and the electrolytic cell are operated for a predetermined period of time to perform post-electrolysis treatment.

Furthermore, if the amount of hot water supplied to the bathtub is integrated and the post-electrolysis treatment time is changed according to this integrated amount of water, it is possible to maintain a constant PH value regardless of the amount of water.

In addition, when a bubble bath device is installed, by connecting the hot water circulation path from the bath pot of the water heater with reheating function to the air supply path of the bubble bath device, the pH can be adjusted even when the bubble bath device is operating. can do.

(Function) When a water heater with reheating function is operated, hot water heated by the hot water supply heat exchanger first passes through the hot water supply path, passes through the bath heat exchanger, and then passes through the circulation path, and then passes through the electrolytic cell installed in the circulation path. Acidic or alkaline water is supplied to the bathtub. When a predetermined amount of hot water is supplied to the bathtub, a drop-in water amount sensor or the like detects this and the hot water supply is stopped.
During reheating, hot water is sucked in from the suction port, heated by a bath heat exchanger via a circulation pump, and then returned to the bathtub through a circulation path and an electrolytic cell. In this way, the pH is adjusted both by supplying hot water to the bathtub and by reheating it.

In addition, if the PH adjustment is insufficient during the operation until the completion of this reheating, the circulation pump and electrolyzer are operated for a specified period of time even after this operation is completed, and post electrolysis treatment is performed.
Make up for the shortfall in the expected PH value.

In addition, if the amount of hot water supplied to the bathtub is detected by a water amount sensor and the post-electrolysis treatment time for operating the circulation pump and electrolytic cell is changed according to this cumulative amount of water,
A constant PH value can be obtained regardless of the amount of water in the bathtub.

In addition, when a bubble bath device is attached, hot water is supplied from the air supply path during hot water supply, and when reheating, the reheated heated water is circulated from the air supply path and air is circulated from the discharge port by the operation of the circulation pump of the bubble bath device. A jet stream containing the water is supplied to the bathtub, and the pH is also adjusted at the same time.

(Example) FIG. 1 is an overall schematic diagram showing one embodiment of the present invention, and FIG. 2 is an overall schematic diagram showing another embodiment of the invention.

In Fig. 1, 1 is a water quality improvement device for bathing water with a built-in water heater with reheating function, 2 is a heat exchanger for hot water supply, 3 is a burner for hot water supply, 4 is a drop-in water flow sensor, and 5 is a water flow rate sensor. Control valve, 6 is a drop-in solenoid valve,
7 is a hopper tank, 8 is a circulation pump, 9 is a water flow switch, 10 is a bath heat exchanger, and 11 is a bath burner. 12 is a bathtub, 13 is a suction port, 14
is the discharge port. 15 is a circulation path on the suction side that connects the bath heat exchanger 10 and the bathtub 12, and is connected to a hot water supply path 16 from the hot water supply heat exchanger 2 via a three-way valve 17. Reference numeral 18 denotes a circulation path on the discharge side, which serves as a hot water supply path when hot water is being supplied, and by switching the three-way valve 17, serves as a circulation path for bath water when reheating. This circulation path 1
8 is connected to an electrolytic cell 19 through communication passages 20 and 21. 22 is a drainage channel for alkaline water or acidic water;
Reference numeral 23 denotes a communication path that branches from the circulation path 18 on the discharge side and connects between the three-way valve 17 of the circulation path 15 on the suction side and the discharge port 14 via a double-carrying solenoid valve 24, and when dropping, the circulation path on the suction side is connected. The passage 15 and the circulation passage 18 can also be used as a discharge passage. Incidentally, the electrolytic cell 19 may be provided at the position shown by the dotted line in FIG.

In the above configuration, when the automatic hot water supply operation is performed, the three-way valve 17 is opened to the bath heat exchanger 10 side, and the hot water heated by the hot water supply heat exchanger 2 is transferred to the bath heat exchanger 1.
0, is diverted to an electrolytic cell 19 to obtain acidic water or alkaline water by electrolysis, passes through a hot water supply circuit 18, and is supplied to the bathtub 12 from a discharge port 14. When a predetermined amount of water is supplied to the bathtub 12, the hot water supply is stopped, the three-way valve 17 is switched, and the bath heat exchanger 10 forms a circulation path with the bathtub 12 by a circulation path 15 on the suction side and a circulation path 18 on the discharge side. Then reheat to the specified temperature.
Even during this reheating, the bath water is supplied by the electrolytic tank 19.
The pH is adjusted and the water is recycled from the circulation path 18 to the bathtub 12. In this way, bath water can be electrolytically treated both when it is dropped into the bathtub 12 and when it is circulated, and the pH can be adjusted quickly.

In addition, if the pH adjustment is still insufficient after the series of hot water supply and reheating operations are completed, the shortfall in the expected pH value can be corrected by continuing to operate the circulation pump 8 and the electrolyzer 19 to perform post-electrolysis treatment. It can be supplemented.

In addition, when hot water is supplied to the bathtub 12, the electrolytic capacity of the electrolytic cell 19 is constant, so when the hot water supply flow rate increases,
The PH value will approach the PH value of the raw water for hot water supply. Therefore, this hot water supply flow rate is detected by the dropping water flow rate sensor 4, and the post-electrolysis treatment time t for operating the circulation pump 8 and the electrolytic cell 19 is changed according to the cumulative amount Qo. That is, if the flow rate Qo now increases to Qo + ΔQ, it will be extended accordingly.

t=Qo+ΔQ/Qoto: Initial post-electrolytic treatment time Thus, a constant PH value can be achieved regardless of the amount of water in the bathtub 12.

Another embodiment of the present invention in which a bubble bath device is attached to a hot water heater with a reheating function will be explained with reference to FIG. It is the same, and a bubble bath device B is attached to this. That is, the foam nozzle 26 and the suction port 1
3, a circulation path 25 on the discharge side and a circulation path 27 on the suction side.
A circulation pump 28 is interposed in the circulation path formed by the back foot switching valve 2 which switches the direction of the bubble jet from the bubble nozzles 26 provided on both the back side and the foot side of the bathtub 12.
9 is provided. 30 is an air supply path connected to the foam nozzle 26, and 31 is an air adjustment valve for adjusting the amount of foam. Reference numeral 32 denotes a filtration circulation path that returns from the circulation path 25 on the discharge side of the circulation pump 28 to the circulation path 27 on the suction side, and an air separator 33, a three-way valve 34, a filter 35, and a three-way valve 36 are interposed therein. 37 is a drainage channel, and 38 is a bypass channel. 39 is a three-way valve,
The circulation path 18 on the discharge side from the water heater A with reheating function is connected to the air supply path 30 of the bubble bath device B via this three-way valve 39. The circulation path 15 on the suction side of the water heater A with reheating function is connected to the circulation path 27 on the suction side of the bubble bath device B, and shares the circulation path from the suction port 13. 40 is a three-way valve that connects the bypass path 38 and the circulation path 15 on the suction side.

In the above configuration, when supplying hot water by dropping it into the bathtub 12, the circulation pump 8 is operated and the circulation path 1 on the discharge side is
8, and PH-adjusted hot water is supplied to the bathtub 12 from the air supply path 30. Circulation pump 8 when reheating
If the circulation pump 28 is operated in combination with the bubble bath, additional heating of the bath water and pH adjustment by the electrolytic bath 19 can be performed.

(Effects of the invention) As described above, according to the invention, hot water is supplied from the water heater with reheating function to the bathtub from the circulation path on the discharge side of the bathtub, and this becomes a common path for the drop and circulation. Since an electrolytic cell is provided in the circulation path, PH-adjusted water can be supplied, and the PH can also be adjusted during reheating, making it possible to quickly reach a predetermined PH value.

In addition, as in the invention of claim 2, if the pH adjustment by electrolysis is insufficient during the series of operations from dropping the water heater with reheating function to reheating, the circulation pump and electrolyzer will continue to operate even after this operation is completed. By operating the tank for a predetermined period of time and performing post-electrolytic treatment, it is possible to easily compensate for the shortfall in the expected pH value.

Further, as in the invention of claim 3, by integrating the amount of hot water supplied to the bathtub and changing the post-electrolysis treatment time according to this accumulated amount of water, it is possible to obtain a constant PH value regardless of the amount of water in the bathtub. can.

Further, according to the invention of claim 4, when a bubble bath device is attached, the hot water supply side circulation path is connected to the air supply path of the bubble bath device via a three-way valve, and hot water is supplied from this air supply path to the bathtub. As a result, the PH can be adjusted during automatic operation when pouring water and reheating, and can also be adjusted during a bubble bath, allowing you to enjoy a bath with the effects of a hot spring.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an overall schematic configuration of an embodiment of the present invention, and FIG. 2 is an explanatory diagram of an overall schematic configuration showing another embodiment of the invention. 2... Heat exchanger for hot water supply, 8... Circulation pump, 1
0... Bath heat exchanger, 12... Bathtub, 15...
Suction side circulation path, 16... Hot water supply path, 17... Three-way valve, 18... Discharge side circulation path, 19... Electrolytic cell, 2
8...Circulation pump, 30...Air supply path, 39...
...Three-way valve, A...Water heater with reheating function, B...Bubble bath device.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A water heater with a reheating function that is equipped with a water heater and a bath pot, the bath pot and the bathtub are connected by a circulation path with a circulation pump, and the A hot water quality improving device for bath water, characterized in that a hot water supply path is connected to a circulation path, hot water is supplied to a bathtub via this circulation path, and an electrolytic cell is provided in the circulation path from the bath pot to the bathtub. 2. A claim in which a circulation pump and an electrolytic cell installed in a circulation path connecting a bathtub and a bath pot are operated for a predetermined period of time even after the automatic hot water reheating operation of a water heater with a reheating function ends to perform post-electrolysis treatment. 1. The bath water quality improving device according to 1. 3. The bath water quality improvement device according to claim 1, wherein the amount of hot water supplied to the bathtub is integrated, and the post-electrolysis treatment time is changed according to this integrated amount of water, so that a constant PH value is maintained regardless of the amount of water. 4. A hot water supply side circulation path from the bath pot of a water heater with reheating function, which is equipped with a bubble bath device having a circulation path connected to the bathtub, a circulation pump installed in this circulation path, and an air supply path for supplying air. 2. The bath water quality improving device according to claim 1, wherein the air supply path is connected to the air supply path through a three-way valve.