JPH09253418A - Apparatus for purifying bathtub water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce running costs and to improve safety. SOLUTION: When the temperature of water in a bathtub 9 reaches a prescribed value or less, valve 4 is opened by a water temperature sensor 5, bathtub water is supplied from the bottom part of a heat accumulation tank 1, and high temperature accumulated water is supplied from the upper part of the tank 1 to a temperature decreasing part 2, where the bathtub water from the valve 4 and the accumulated hot water are mixed. Water whose temperature is reduced to a prescribed value is mixed with circulating water of a circulation route X4 through piping Y5, and the mixture is supplied to the bathtub 9.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a bath water purifying apparatus. 2. Description of the Related Art In recent years, a bathtub hot water purifying apparatus that keeps the hot water of the bathtub clean by repeatedly pumping the hot water of the bathtub through a predetermined purification mechanism and then returning it back to the bathtub has become widespread. In such a bath water purifying apparatus, the bath water is forcibly circulated by a circulation pump, filtered by activated carbon, sterilized by ozone, etc., and at the same time maintained at a predetermined temperature by an electric heater. It is normal.

[0002]

However, in the conventional purifying apparatus, it is necessary to always heat the hot water with an electric heater in order to keep the hot water at an appropriate temperature, and there is a problem that the running cost becomes high. An object of the present invention is to solve the above-mentioned problems of the conventional technology.

[0003]

In order to achieve the above object, the present invention provides a bathtub hot water purifying device for circulating bathtub hot water by a circulation path between the bathtub and the cleaning mechanism, and a predetermined position of the circulation path. A means for storing hot water by introducing hot water into the bathtub and heating it to a predetermined temperature to keep it warm; and means for lowering the stored hot water from the means for storing to a predetermined temperature. A means for supplying the hot water, which has been lowered to a predetermined temperature by the means for lowering it, to a circulation path at a position closer to the bath than the predetermined position; and a means for detecting the temperature of the hot water. And, when the temperature detected by the means for detecting becomes equal to or lower than a predetermined temperature, the means for supplying is provided with means for supplying the hot water that has dropped to the predetermined temperature to the circulation path. And The means for storing stores the heated hot water by executing the heating operation at an appropriate time, so that it is possible to use, for example, late-night power, and the cost required for heating can be reduced. Further, since it is possible to use solar heat or the like and it is not necessary to always perform heating, the range of selection of the heat source is widened, and the heating cost can be reduced. In addition, the temperature of the hot water from the means for storing is lowered to a predetermined temperature for use, and is not supplied directly to the bathtub, but is supplied to the circulation path once and then returned to the bathtub Can prevent accidents such as burns due to hot water storage. As a means for lowering the temperature of the hot water storage, it is possible to lower the temperature by, for example, mixing the hot water storage and the bath water. The hot water may be mixed with the bath water using a thermo valve, or may be mixed by connecting a pipe having a preset pipe diameter. In this case, the hot water storage temperature is lowered to a predetermined temperature by setting the pipe diameter. The means for storing usually outputs the same amount of hot water as the introduced bath water, unless water is supplied from other sources. Therefore, if the means for lowering the temperature lowers the temperature by mixing with the hot water in the bathtub and does not supply water from another source, the amount of hot water in the bath water can always be maintained at a constant value. It is possible to further provide safety by further providing a safety device for stopping the supply of the hot water when the temperature of the hot water from the lowering means is equal to or higher than a predetermined temperature. Further, as described above, when the thermo valve is used, the thermo valve may be closed to stop the supply of the hot water when the temperature of the hot water is equal to or higher than a predetermined temperature.

[0004]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, the hot water in the bathtub 9 is passed through the circulation path X1 and the circulation path X2 by the pump 6, and the sterilizer 7
It is configured such that it is sterilized by the above, is further purified by passing through the filter 8 through the circulation path X3, and is returned to the bathtub 9 from the circulation path X4. The arrangement of the pump 6, the sterilization device 7, and the filtration device 8 can be changed, and other devices can be added. A hot water temperature sensor 5 is provided in the circulation path X1 near the exit of the bath tub 9 so as to detect the temperature of the hot water in the bath.

A pipe Y1 is connected to the circulation path X2 and is connected to a valve 4. The valve 4 is opened and closed by a control device (not shown) and is configured to be opened and closed according to the temperature of the bath water from the hot water temperature sensor 5. The pipe Y1 may be connected to any part of the purification circuit, for example, it is possible to connect it to the circuit X4 to introduce the hot water purified by the filtering device 8. A pipe Y2 is provided on the outlet side of the valve 4 so as to be connected to the temperature lowering section 2 and the pipe Y3 is branched and connected to the bottom surface side of the heat storage tank 1. In addition, a check valve 4 is provided in the pipe Y1.
0 is provided so that high-temperature hot water on the heat storage tank 1 side does not flow back to the sterilizer 7 and filter 8 sides. As a result, it is possible to prevent an accident due to backflow of high-temperature hot water when cleaning or inspecting the filtering device 8. Further, it is preferable that the heat storage tank 1 be provided with a discharge valve so that the hot water in the heat storage tank 1 can be discharged so that the heat storage tank 1 can be easily inspected and cleaned. This discharge valve may be realized by forming the valve 4 with a three-way valve.

The heat storage tank 1 has a high heat insulating property and is designed to store the hot water stored therein while maintaining the temperature of the hot water stored therein. The heat storage tank 1 is equipped with a heater 10,
It is turned on at a predetermined time in the middle of the night and heats the hot water inside the heat storage tank 1 by using the late night electric power which is cheap. The pipe Y3 is connected to the bottom surface of the heat storage tank 1, so that the bath water having a low temperature collects below the heat storage tank 1,
The high-temperature hot water heated by the heater 10 collects on the upper side of the heat storage tank 1. Reference numeral 11 is a hot water sensor.

A pipe Y4 is provided above the heat storage tank 1 so that high temperature hot water is supplied to the temperature lowering section 2. The hot water is supplied from the heat storage tank 1 by the inflow pressure of the hot water from the pipe Y3 to the heat storage tank 1, and when the hot water having a low temperature is supplied from the pipe Y3 to the heat storage tank 1. Heat storage tank 1
From the above, hot hot water is supplied to the temperature lowering unit 2 through the pipe Y4. Since the bath hot water is supplied to the heat storage tank 1 by opening and closing the valve 4, the opening and closing of the valve 4 eventually controls the supply of hot water to the temperature lowering unit 2.

A water shortage sensor 12 is installed in the heat storage tank 1.
Is provided, and when a water shortage in the heat storage tank 1 is detected during the operation mode, a water shortage warning is given and the pump 6 is stopped to set the stop mode for safety. On the other hand, when water shortage is detected by the water shortage sensor 12 when the operation mode is not set, the valve 4 is opened to fill the heat storage tank 1 with water.
With this configuration, water filling is performed by the pipe Y3, it is not necessary to install an upper lid or the like on the heat storage tank 1, and it is possible to reduce the cost.

In this embodiment, the temperature drop section 2 is a pipe Y4.
Is performed by mixing the high temperature hot water from the pipe and the low temperature bath water from the pipe Y2. Instead of this, it is possible to reduce the temperature, for example, by mixing fresh tap water. A safety device 3 is provided on the outlet side of the temperature lowering unit 2 so that when hot water having a temperature equal to or higher than a predetermined temperature comes out, the supply of the hot water is stopped and safety is ensured.

FIG. 2 shows an example of a specific configuration of the temperature lowering unit 2 and the safety device 3. In this example, pipe Y2 and pipe Y4
A thermo-valve 20 is provided at the connecting portion of the thermo-valve, and the thermo-valve 20 is provided with the functions of the temperature lowering unit 2 and the safety device 3. The pipe Y2 is connected to the inlet 29 of the temperature lowering unit 2, and the pipe Y4 is connected to the inlet 28 of the temperature lowering unit 2. The thermo-valve 20 is called a wax thermo-valve, and wax is stored in the wax storage portion 23, and the thermal expansion causes the piston 24 to move to open and close the valve body 21. Valve element 21
Is pressed by the spring 22 in the opening direction, and when the wax containing portion 23 is warmed and the wax inside expands, the piston 24 moves to move the valve body 21 in the closing direction. The wax storage section 23 includes pipes Y2 and Y4.
When the temperature of the mixing chamber 25 is high and the temperature of the mixing chamber 25 is low, the valve body 21 is moved in the opening direction. Increase the amount of hot water stored. By this operation, the temperature of the mixing chamber 25 is set to a predetermined temperature (about 50 ° C. in this embodiment). Further, when the temperature of the mixing chamber 25 becomes higher than a predetermined temperature, the valve body 21 is completely closed as shown in FIG. 3, and hot water is not supplied from the pipe Y4. This can prevent hot water from being supplied to the pipe Y5 side.

FIG. 4 shows another embodiment of the temperature lowering section 2 and the safety device 3. In this embodiment, the temperature drop portion 2'is a connecting portion that simply connects the pipe Y2 and the pipe Y4. By setting the pipe diameters of the inflow port 28 'and the inflow port 29' to be predetermined, The temperature of the hot water storage is lowered to the temperature. That is, the temperature of the hot water from the pipe Y4 is substantially constant, and the temperature of the hot water in the bathtub when the valve 4 is opened is also substantially constant.
By properly setting the pipe diameter of the inlet port 29 ', it becomes possible to obtain hot water of a predetermined temperature in the mixing chamber 25'.

In this embodiment, the safety device 3 is provided on the pipe Y5 side of the mixing chamber 25 '. This safety device 3
Is composed of the thermo valve 20 described above, and when hot water of a predetermined temperature or higher comes from the mixing chamber 25 'side,
The wax inside the wax container 23 is heated, the piston 24 moves to lift the valve body 21, and the inflow of high temperature hot water from the mixing chamber 25 'is completely closed against the force of the spring 22 as shown in FIG. It is supposed to do.

Hot water supplied from the temperature lowering unit 2 and the safety device 3 is connected to a circulation path X4 via a pipe Y5, and is mixed with a bath water circulating in the circulation path X4, and then is mixed in a bathtub 9. It is being supplied. Therefore, the hot water from the pipe Y5 is not directly supplied to the bathtub 9, but is supplied after being mixed with the circulating hot water in the circulation path X4, so that an accident or the like in which hotter hot water is directly supplied to the bathtub 9 is prevented. it can.

Next, the operation will be described. The bathtub hot water of the bathtub 9 passes through the circulation path X1, is sucked by the pump 6, and is sent out to the circulation path X2. Normally, the valve 4 is closed, and all the bath water is sent to the sterilization device 7, purified by the filter device 8 through the circulation path X3, and returned to the bathtub 9 through the circulation path X4.
When the hot water temperature sensor 5 detects that the temperature of the hot water in the bathtub has fallen below a predetermined temperature, the controller (not shown) causes the valve 4 to operate.
Is opened and a part of the bath water is sent to the heat storage tank 1 through the pipe Y1, the pipe Y2, and the pipe Y3.

Hot water heated by late-night power is stored in the heat storage tank 1, and when hot water is poured from the lower side, the hot hot water is discharged from the upper side through the pipe Y4.
Hot water having a high temperature is mixed with the bath water from the pipe Y2 in the temperature lowering section 2 through the pipe Y4, and the temperature is lowered to a predetermined temperature. If an accident such as the hot water in the bathtub not being supplied due to clogging or failure of the pipe Y2 occurs, the mixing chambers 25, 25 '
Since the hot water becomes hot, the valve body 21 is closed and the hot water is not supplied to the pipe Y5 side. This can prevent an accident in which hot water is supplied. The hot water whose temperature has been lowered to a predetermined temperature is mixed with the circulating bath water in the circulation path X4 via the pipe Y5 and supplied to the bath 9. As a result, when the temperature of the hot water in the bathtub rises, this is detected by the hot water temperature sensor 5, and the valve 4
Is closed and the supply of hot water from the heat storage tank 1 is stopped.

By the above operation, the temperature of the bath water in the bath 9 is maintained at a predetermined temperature. The heating in the heat storage tank 1 does not always have to be performed, and since it is possible to use the midnight power as in this embodiment, the cost required for heating can be reduced. Further, since the temperature of the hot hot water from the heat storage tank 1 is once lowered by the temperature lowering unit 2 and further mixed with the bath water in the circulation path X4 and then supplied to the bath 9, the hot water is directly fed to the bath. It is safe because it is not supplied to 9. Further, even when the pipe Y2 is clogged or the like, the safety device 3 stops the supply of high-temperature hot water, so that the safety level is further improved.

[0017]

As described above, according to the bath water purifying apparatus of the present invention, it is not necessary to constantly heat the bath water, and late night electric power or solar heat can be used as a heating heat source, so that the cost required for heating can be reduced. It is possible to reduce the running cost. Moreover, hot water is not directly supplied to the bathtub, which is advantageous in that it is safe.

[Brief description of drawings]

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

FIG. 2 is an enlarged cross-sectional view showing an example of the temperature lowering unit 2 and the safety device 3 according to the embodiment of the present invention.

FIG. 3 is an operation explanatory view of the temperature lowering unit 2 and the safety device 3 in FIG.

FIG. 4 is an enlarged cross-sectional view showing an example of another temperature drop unit 2 ′ and a safety device 3 ′ according to the embodiment of the present invention.

5 is an explanatory diagram of the operation of the safety device 3'in FIG.

[Explanation of symbols]

1: Heat storage tank, 2: Temperature drop part, 3: Safety device, 4:
Valve, 5: Hot water temperature sensor, 6: Pump, 7: Sterilizer,
8: Filtration device, 9: Bathtub, 10: Heater, 11: Hot water temperature sensor, 12: Water shortage sensor, 20: Thermo valve, 2
1: valve body, 22: spring, 23: wax storage section, 24:
Piston, 25: mixing chamber, 28: inlet, 29:
Inlet, 40: Check valve.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical display location C02F 1/50 531 C02F 1/50 531R 540 540A 550 550B 560 560B 1/78 1/78 F24H 9 / 00 F24H 9/00 W 9/20 9/20 A (72) Inventor Fumiyuki Mishima 1463 Asama-cho, Hachioji-shi, Tokyo Inside Jamme-no-Machine Machine Industry Co., Ltd. (72) Inventor Katsuaki Nozawa Hachioji-shi, Tokyo No. 1463, Hazama-cho, in the Janome Machine Industry Co., Ltd. (72) Inventor, Mineo Suzuki No. 1 Chubu Electric Power Co., Inc., No. 20, Kita-Sekizan Co., Ltd., Otaka-cho, Midori-ku, Nagoya, Aichi Prefecture (72) 15-1 Ushijima-cho, Toyama City, Toyama Prefecture Inside the Hokuriku Electric Power Company (72) Inventor Shuichi Aoyama 15-1 Ushijima-cho, Toyama City, Toyama Prefecture Within the Hokuriku Electric Power Company (72) Inventor Shuzo Kaku 3-3-22 Nakanoshima, Kita-ku, Osaka City, Osaka Prefecture Kansai Electric Power Co., Inc. (72) Inventor Mitsuyuki Aoki 3-3-22 Nakanoshima, Kita-ku, Osaka City, Osaka Kansai Electric Power Co., Inc. Within

Claims (7)

[Claims] 1. A bathtub hot water purifying device for circulating a bathtub hot water by a circulation path between a bathtub and a cleaning mechanism, which is connected to a predetermined position of the circulation path, introduces the bath hot water, and heats it to keep it warm. In addition, the means for storing, the means for lowering the hot water of a predetermined temperature from the means for storing to a predetermined temperature, and the hot water lowered to the predetermined temperature by the means for lowering Means for supplying to the circulation path at a position closer to the bath than the predetermined position, means for detecting the temperature of the bath water, and the temperature detected by the means for detecting are below a predetermined temperature. And a means for causing the supply means to supply the stored hot water that has fallen to a predetermined temperature to the circulation path. 2. The bath water purifying apparatus according to claim 1, wherein the means for storing supplies the same amount of hot water as the introduced bath water to the bath side. 3. The bath water purifying apparatus according to claim 1, wherein the means for lowering the temperature lowers the temperature by mixing the hot water and the bath hot water. 4. The bath hot water purifying apparatus according to claim 3, wherein the hot water storage is lowered to a predetermined temperature by mixing the hot water storage and the bath hot water using a thermo valve. 5. The hot water storage and the bath water are mixed by connecting a pipe having a pipe diameter set in advance, and the hot water storage is lowered to a predetermined temperature by setting the pipe diameter. Bath water purification device. 6. The safety device for stopping the supply of the hot water when the temperature of the hot water from the lowering means is equal to or higher than a predetermined temperature is further provided. The bathtub water purifying apparatus according to. 7. The bath water purifying apparatus according to claim 4, wherein when the temperature of the hot water from the thermo valve is equal to or higher than a predetermined temperature, the thermo valve is closed to stop the supply of the hot water.