JP3799100B2 - Bath water cleaning equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bath water purifier.
In recent years, bath water purifiers that keep the bathtub hot water clean by repeating the process of pumping the hot water from the bathtub and passing it through a predetermined purification mechanism and then returning it to the bathtub again are widely used. In such a bath water purifier, the bath water is forcibly circulated by a circulation pump, and is filtered by activated carbon or sterilized by ozone or the like, and at the same time is kept at a predetermined temperature by an electric heater. It is normal.
However, since the electric heater has a small amount of heat, the temperature cannot be increased rapidly. Therefore, it is necessary to always maintain the temperature of the bath water with the electric heater. As a result, there is a problem that the thermal loss due to the is large and the running cost is high as a whole.
In order to solve such problems, hot water heated by a low-cost heat source such as midnight power is stored in a heat storage tank, and this high-temperature hot water is supplied to the bathtub, so that high-speed heating and cost reduction can be achieved. Attempts have been made to achieve this.
[0002]
[Problems to be solved by the invention]
In the above-described apparatus, the heat storage tank is heated by midnight power or other heat sources, but in any case, heating is often performed when the user is not using the bath, and water is stored in the heat storage tank. There is a problem that it is difficult to find heating in the absence of air, that is, airing.
For this reason, it is possible to detect the absence of water in the device by detecting the flow of water by detecting the pressure difference in the float switch or pipe, but the former is contaminated by circulating bath water. There is a problem in that clogging is likely to occur, which makes the device inoperable and undetectable. Moreover, since the latter requires a flow of bath water, there is a drawback that no water detection can be performed unless a heating operation for supplying high temperature water from the heat storage tank to the bathtub is performed.
Furthermore, it is possible to place a temperature sensor in the immediate vicinity of the heat generating part of the heater of the heat storage tank and detect emptying by detecting the heater heat generation, but it is difficult to attach the temperature sensor in the vicinity of the heater heat generating part. There was a problem.
The present invention has been made to solve the above-described problems.
[0003]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a heat storage tank for introducing and heating and storing the bath water in a bath water purifier for purifying the bath water by circulating between the bathtub and the cleaning mechanism. A heater means mounted in the heat storage tank for heating the bath water inside the heat storage tank and having a flange exposed to the outside of the heat storage tank; and means for supplying hot water from the heat storage tank to the bathtub A means for detecting the temperature inside the heat storage tank, a means for detecting the temperature of the flange of the heater means, and a temperature rise curve of the detected temperature in the heat storage tank during heating by the heater means, And a means for comparing a temperature rise curve of the temperature of the flange and detecting emptying of the heat storage tank based on the comparison result of the temperature rise curve.
Since there is a difference in the temperature of the flange of the heater means and the temperature in the heat storage tank when there is water in the heat storage tank and when there is no water, it is possible to detect emptying by comparing this.
It is also possible to automatically stop the heating by the heater means when the air blow is detected. It is also possible to notify the user to that effect.
[0004]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, a main body 1 is usually installed outdoors, and is connected to a bathtub 2 by a water inlet pipe 3 and a water outlet pipe 4. The user operates, stops, and the like with the operation panel 5 attached to the wall surface of the bathroom. The operation panel 5 is connected to the control device 6 in the main body by a cord, and displays an operation state, hot water temperature, time, various warnings, etc. in the main body.
[0005]
A pre-filter 8 is connected in the bathtub at the end of the water intake pipe 3, and bath water is sucked into the main body from here. A circulation pump 9 is attached to the other main body side of the water intake pipe 3.
The water discharge side of the circulation pump 9 is connected to the sterilization lamp 7, and the bath water is sterilized here and then sent to the filter medium tank 10 where it is purified. The filter medium tank 10 contains filter media such as ceramic balls and activated carbon, and purifies the bath water.
[0006]
An auxiliary heater 26 is provided on the outlet side of the filter medium tank 10, and the outlet side of the auxiliary heater 26 is connected to the heating valve 16.
The outlet side of the heating valve 16 is selectively connected to the heat storage tank 11. Normally, it is connected only to the water discharge pipe 4 side, the heat storage tank 11 side is closed, and it is connected to the heat storage tank 11 only when heating is required, and bath water is supplied from the lower part of the heat storage tank 11. Yes. The water discharge pipe 4 is connected to the jet nozzle 21, from which bath water is returned to the bathtub 2.
[0007]
A heat storage tank heater 18 is attached to the heat storage tank 11 to heat the bath water introduced by using midnight power to a predetermined temperature (about 85 ° C.).
In addition, an upper temperature sensor 13, a remaining hot water sensor 14, and a lower temperature sensor 15 are attached to the heat storage tank 11 so that the temperature and remaining amount of hot water in the heat storage tank 11 can be detected.
In addition, since the density of bath water (about 40 ° C) and high-temperature water is different, high-temperature water is discharged from the heat storage tank 11 by the amount of bath water that has entered the heat storage tank 11, and Do not mix.
The upper part of the heat storage tank 11 is connected to the other water inlet side of the mixing valve 17. The mixing valve 17 adjusts an internal valve of the bath water from the heating valve 16 and the high-temperature water that has come out from the upper part of the heat storage tank 11 to an appropriate predetermined hot water temperature. 4 and discharged from the jet nozzle 21 to the bathtub 2.
[0008]
A bath water temperature detection sensor 20 is attached to the water intake pipe 3, and when the bath water temperature detected by the bath water temperature detection sensor 20 falls below the heat retention temperature set by the user, the warming valve 16 The heat storage tank 11 side is opened, bath water is supplied to the heat storage tank 11, and thereby hot water is supplied from the upper part of the heat storage tank 11 to the mixing valve 17, where the bath water and hot water are mixed and bathed. It is comprised so that it may discharge to. When the bath water temperature exceeds a predetermined value (about 0.5 ° C) from the heat retention temperature, mixing of the high temperature water is stopped and only the bath water is discharged into the bathtub. This is executed by controlling the heating valve 16 by the control device 6. The valve is controlled by a pulse motor or the like.
The discharge side of the mixing valve 17 is connected to the water discharge pipe 4 and connected to the jet nozzle 21.
[0009]
The auxiliary heater 26 is used when it is impossible to keep the bath water in the bathtub with only the high-temperature water in the heat storage tank 11 in winter or the like. It becomes possible to do.
[0010]
A jet solenoid valve 23 and an air filter 24 are connected to the jet nozzle 21 via an air tube 25, and the jet solenoid valve 23 is turned on by operation of a jet key on the operation panel 5 so that air can be ejected from the jet nozzle 21. It is like that. The jet nozzle 21 has a narrow inner diameter so that air is mixed therein.
A pressure sensor 12 is provided in parallel with the circulation pump 9 so that a decrease in the water level of the bath water can be detected.
[0011]
In the above configuration, the heater portion of the heat storage tank heater 18 protrudes into the heat storage tank 11, but the heater flange 180 is mounted on the external wall of the heat storage tank 11 and is connected to a power source or the like. . The heater flange 180 is provided with a heater flange temperature sensor 181 so as to detect the temperature of the heater flange 180.
On the other hand, the control device 6 is provided with an emptying detection device 60, which is a temperature detected from the lower temperature sensor 15 during heating by the heat storage tank heater 18 and a temperature detected from the heater flange temperature sensor 181. The rising curves are compared to detect airing.
[0012]
FIG. 2 shows a graph showing the temperature rise. (A) is a temperature rise curve in a state where water is contained in the heat storage tank 11, and (B) is a temperature rise curve in a state where water is not contained in the heat storage tank 11.
In the case of (A), the detected temperature of the heater flange temperature sensor 181 and the detected temperature of the lower temperature sensor 15 draw the same rising curve, but in the case of (B), the detected temperature of the heater flange temperature sensor 181 is the lower temperature sensor. It is clear that a steep curve is drawn as compared to 15 detected temperatures. Since this phenomenon appears within 1 minute after the start of heating of the heat storage tank heater 18, the problem due to airing can be prevented by detecting the airing after this point and giving a warning or the like.
When the air-spreading detection device 60 detects air-spreading, the control device 6 stops heating the heat storage tank heater 18, displays that fact on the operation panel 5, and emits a warning sound.
[0013]
According to the embodiment described above, it is possible to accurately detect the emptying of the heat storage tank 11, thereby stopping heating, displaying, and warning, so that various problems caused by emptying can be avoided.
In addition, the heater flange temperature sensor 181 may be attached to the outside of the heat storage tank 11 and can be easily attached, and can be reliably operated without contamination with bath water. In addition, there is an effect that it does not cause clogging of bath water.
[0014]
【The invention's effect】
As described above, according to the bath water purification apparatus of the present invention, it is possible to accurately detect emptying in the heat storage tank, and it is possible to prevent problems caused by emptying. Moreover, since the temperature sensor is attached outside the heat storage tank, it is easy to attach, and there is an effect that it is possible to continue a reliable operation without causing contamination by bath water.
[Brief description of the drawings]
FIG. 1 is a schematic block diagram showing an embodiment of the present invention.
FIG. 2 is a graph showing the operation in one embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1: Main body, 2: Bathtub, 3: Water inlet pipe, 4: Water discharge pipe, 5: Operation panel, 6: Control apparatus, 7: Sterilization lamp, 8: Pre filter, 9: Circulation pump, 10: Filter material tank, 11 : Heat storage tank, 12: Pressure sensor, 13: Upper temperature sensor, 14: Remaining hot water sensor, 15: Lower temperature sensor, 16: Heating valve, 17: Mixing valve, 18: Heat storage tank heater, 19: Safety valve, 20: Bath water temperature detection sensor, 21: jet nozzle, 23: jet solenoid valve, 24: air filter, 25: air tube, 26: auxiliary heater, 60: air blow detection device, 180: heater flange, 181: heater flange temperature Sensor.

Claims (3)

In the bath water cleaning device for purifying the bath water by circulating between the bathtub and the cleaning mechanism,
A heat storage tank for introducing and heating and storing the bath water;
Heater means attached to the heat storage tank, heating the bath water inside the heat storage tank, and having a flange exposed to the outside of the heat storage tank;
Means for supplying hot water from the heat storage tank to the bathtub;
Means for detecting the temperature inside the heat storage tank;
Means for detecting the temperature of the flange of the heater means;
When heating by the heater means, the temperature rise curve of the detected temperature in the heat storage tank is compared with the temperature rise curve of the temperature of the flange, and based on the comparison result of the temperature rise curves, Means for detecting
A bath water cleaning apparatus comprising: The bath water cleaning apparatus according to claim 1, further comprising means for stopping heating by the heater means based on detection of the airing. Means for notifying of airing when the detection of airing is detected;
The bath water cleaning apparatus according to claim 1 or 2.

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