JP3947298B2 - Bath water purification device with heat storage tank - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bath water purifier having a heat storage tank.
[0002]
[Prior art]
In recent years, bath water purifiers that circulate bath water in a bathtub with a pump or the like and filter and sterilize the bath water have become widespread. This bath water purifier is a type that uses hot energy using low-cost energy such as midnight power, stores it in a heat storage tank, supplies high-temperature water appropriately, and uses it for heat insulation and reheating. And is commercially available.
In the heat storage tank, when heating is performed, it is important to prevent so-called air heating that heats the heat storage tank without water.
Therefore, conventionally, a float sensor is provided in the heat storage tank to check the presence or absence of water, or a temperature sensor is provided in the heat storage tank to detect the presence or absence of water based on the degree of temperature rise during heating. It was broken.
[0003]
[Problems to be solved by the invention]
However, in the case of the float sensor, there is a problem that failure is likely to occur due to dirt or calcium adhesion. In the case of using a temperature sensor, the presence or absence of water is not known unless it is heated once, and a slight emptying state cannot be avoided, which has a problem of adversely affecting the heat storage tank.
The present invention aims to remedy the drawbacks of the prior art described above.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a purification mechanism that circulates bath water in a bathtub with a pump, filters and sterilizes the bath water, a heat storage tank that stores high-temperature water, and the high-temperature water in the heat storage tank. An introduction means for selectively introducing into the mechanism, a circulation path forming means for forming a path for circulating the bath water including the heat storage tank, and supplying bath water of the heat storage layer to the purification mechanism, and the circulation path formation A pressure sensor that is disposed at a predetermined position of the circulation path formed by the means and detects the pressure of the bath water mixed from the heat storage tank; and a means for notifying when the detected pressure is less than a predetermined value; The circulation path is formed by the circulation path forming means, the detected pressure is obtained from the pressure sensor, and when the detected pressure is not more than a predetermined value, the notification means notifies that effect. Means It solved the problem by the bath water purifying apparatus provided with a heat storage tank for.
The present invention also provides a purification mechanism for circulating and purifying bath water, a heat storage tank for storing high-temperature water, a heater for heating provided in the heat storage tank, and high-temperature water in the heat storage tank selected as the purification mechanism. Introducing means, circulation path forming means for forming a path for circulating bath water including the heat storage tank, and a pressure sensor for detecting a pressure at a predetermined position of the circulation path formed by the circulation path forming means A means for notifying when the detected pressure is less than or equal to a predetermined value; and when operating the heater for heating, a circulation path is formed by the circulation path forming means, and the detected pressure is detected from the pressure sensor. When the detected pressure is less than or equal to a predetermined value, the thermal storage tank is filled with water, the detected pressure is obtained again after a predetermined time, and when the detected pressure is less than or equal to the predetermined value, By means of notification Causing an announcement to that effect, comprising a control means. The problem was solved by using a bath water purifier equipped with a heat storage tank.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, the temperature of the bath water in the bathtub 1 is measured by a hot water temperature sensor 3 via a drain pipe 2 and sent from a circulation pump 4 to a filtration tank 6 where it is filtered and is switched through a switching valve V1 and a switching valve V2. It passes through the water inlet pipe 10 and returns to the bathtub 1. A pressure sensor 5 detects the pressure difference between the inlet and outlet of the circulation pump 4.
[0006]
The heat storage tank 7 is provided with a heat storage heater 8, and for example, the bath water in the heat storage tank 7 is heated to a predetermined high temperature by midnight power. As shown in FIG. 2, bath water is introduced from the lower part of the heat storage tank 7 by switching the switching valve V1, and high pressure water is output from the upper part of the heat storage tank 7 to the mixing unit 9 side by this pressure. . In this mixing section 9, normal temperature bath water from the switching valve V1 and hot bath water from the heat storage tank 7 are mixed, supplied to the pipe line before the switching valve V2, and passed through the water inlet pipe 10 to the bathtub 1. Heated bath water is supplied.
[0007]
When the heat storage heater 8 is heated by midnight power or the like, the switching valve V2 is switched from the inlet pipe 10 side to the outlet pipe 2 side as shown in FIG. 3 to circulate the pump 4, the filtration tank 6, the switching valve V1, and the heat storage tank. 7, the mixing part 9, the switching valve V2, and the circulation pump 4 are configured to form a circulation path.
Bath water is circulated through this circulation path, and the pressure sensor 5 detects the pressure difference between the suction side and the discharge side of the circulation pump 4. When the heat storage tank 7 is not filled with water, air circulates, the circulation pump 4 is idled, and no pressure difference is detected from the pressure sensor 5. Thereby, it can be judged that there is no water in the heat storage tank 7.
[0008]
FIG. 4 shows a block diagram of the control device. The control device 20 is mainly composed of a microcomputer, and controls the entire device based on programs and data stored in the memory 21. The operation key 22 is used to input a user command, and various controls are performed according to the command. Further, the pressure detection value from the pressure sensor 5 and the temperature detection value from the hot water temperature sensor 3 are input to the control device 20, and a display on the display device 23, a warning by the buzzer 24, and the like are made. ing. The control device 20 also controls the circulation pump 4, the heat storage heater 8, the switching valve V1, the switching valve V2, and the like.
[0009]
In this embodiment, the heat storage heater 8 is operated according to the time during which midnight power is applied. When the control device 20 knows that the energization time of the heat storage heater 8 has been reached by the internal timer, the switching valve V1 is switched. The internal circulation mode shown in FIG. 3 is controlled by controlling the valve V2, and the presence or absence of water in the heat storage tank 7 is judged by detecting the pressure from the pressure sensor 5, and when there is no water, it is displayed on the display device 23 and the buzzer 24 A warning is issued.
In addition, in this embodiment, the switching valve V2 is returned to the state shown in FIG. 2, and the bath water is sent from the switching valve V1 to the heat storage tank 7 so that the heat storage tank 7 is filled with the bath water and the heat storage heater 8 is filled. Is configured to run.
Note that both the notification by the display device 23 and the buzzer 24 and the filling of the bath water in the heat storage tank 7 by the control of the switching valve V2 may be performed, or one of them may be performed.
[0010]
The above operation will be further described with reference to the flowchart of FIG.
The operation is continued in the purification mode shown in FIG. 1 (step S1), and when the energization time of the heat storage heater 8 comes (step S2), the switching valve V1 and the switching valve V2 are switched to the check mode shown in FIG. 3 (step S3). ), And the detection value of the pressure sensor 5 is checked (step S4). When it is determined that the pressure sensor 5 is on and water is present, the switching valve V1 and the switching valve V2 are returned to the state shown in FIG. 1, and the operation is performed in the purification mode (step S5). Step S6). If it is determined in step S4 that the pressure sensor 5 is off and there is no water in the heat storage tank 7, the switching valve V1 and the switching valve V2 are similarly returned to the purification mode of FIG. 1 (step S7), and an error message is displayed on the display device 23. It performs (step S8), and water filling to the heat storage tank 7 by a user's key operation is performed (step S9).
[0011]
Another embodiment will be described with reference to FIG.
The operation is continued in the purification mode shown in FIG. 1 (step S20), and when the energization time of the heat storage heater 8 comes (step S21), the switching valve V1 and the switching valve V2 are switched to the check mode shown in FIG. 3 (step S22). ), And the detection value of the pressure sensor 5 is checked (step S23). When it is determined that the pressure sensor 5 is on and water is present, the switching valve V1 and the switching valve V2 are returned to the state shown in FIG. 1, and the operation is performed in the purification mode (step S24). Step S25). If it is determined in step S23 that the pressure sensor 5 is off and there is no water in the heat storage tank 7, it is determined whether or not it is turned off for the second time (step S26). If it is the first time, the switching valve V1 and the switching valve V2 are set as shown in FIG. The warming mode is set (step S27), and water filling to the heat storage tank 7 is executed for a predetermined time (step S28). Then, the process returns to step S22.
If it is off for the second time in step S26, it is switched to the purification phase and an error is displayed on the display device 23 (step S29), and the heat storage tank 7 is filled with a key operation by the user (step S30).
[0012]
In the embodiment described above, since the internal circulation path is formed and the presence or absence of water in the heat storage tank 7 is detected by the pressure sensor 5, the emptying of the heat storage tank 7 can be prevented. Further, it is possible to prevent a decrease in measurement accuracy due to dirt and calcium adhesion. Furthermore, the detection can be reliably performed without being influenced by the temperature of the water in the heat storage tank 7 or the temperature of the circulating bath water.
[0013]
【The invention's effect】
As described above, according to the bath water purifier having the heat storage tank of the present invention, it is possible to reliably prevent the heat storage tank from being blown.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an embodiment of the present invention.
FIG. 2 is a schematic diagram illustrating the operation of an embodiment of the present invention.
FIG. 3 is a schematic diagram for explaining another operation of the embodiment of the present invention.
FIG. 4 is a functional block diagram showing an embodiment of the present invention.
FIG. 5 is a flowchart for explaining the operation of one embodiment of the present invention.
FIG. 6 is a flowchart for explaining the operation of one embodiment of the present invention.
[Explanation of symbols]
1: Bath, 2: Drain pipe, 3: Hot water temperature sensor, 4: Circulation pump, 5: Pressure sensor, 6: Filtration tank, 7: Heat storage tank, 8: Heat storage heater, 9: Mixing unit, 10: Water intake pipe, 20: Control device, 21: Memory, 22: Operation key, 23: Display device, 24: Buzzer.

Claims (2)

A purification mechanism that circulates bath water in the bathtub with a pump, filters and sterilizes the bath water,
A heat storage tank for storing hot water;
Introducing means for selectively introducing high temperature water of the heat storage tank into the purification mechanism;
Forming a path for circulating the bath water, including the heat storage tank, a circulation path forming unit for supplying the bath water thermal storage layer in the cleaning mechanism,
A pressure sensor that is disposed at a predetermined position of the circulation path formed by the circulation path forming means and detects the pressure of the bath water mixed from the heat storage tank ;
Means for notifying when the detected pressure is not more than a predetermined value;
Control means for forming a circulation path by the circulation path forming means, obtaining a detected pressure from the pressure sensor, and, if the detected pressure is not more than a predetermined value, causing the notification means to make a notification to that effect When,
A bath water purifier equipped with a heat storage tank. A purification mechanism for circulating and purifying bath water;
A heat storage tank for storing hot water;
A heater for heating provided in the heat storage tank;
Introducing means for selectively introducing high temperature water of the heat storage tank into the purification mechanism;
A circulation path forming means for forming a path for circulating the bath water including the heat storage tank;
A pressure sensor for detecting the pressure at a predetermined position of the circulation path formed by the circulation path forming means;
Means for notifying when the detected pressure is not more than a predetermined value;
When operating the heater for heating, a circulation path is formed by the circulation path forming means, a detected pressure is obtained from the pressure sensor, and water filling is performed on the heat storage tank when the detected pressure is a predetermined value or less. Control means for obtaining the detected pressure again after a lapse of a predetermined time, and when the detected pressure is again below a predetermined value, causing the notification means to make a notification to that effect;
Equipped. The bath water purification apparatus provided with the heat storage tank characterized by the above-mentioned.

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