JP3708626B2 - Bathtub hot water purifier using midnight power - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bathtub hot water purifier using midnight power.
[0002]
[Prior art]
2. Description of the Related Art In recent years, bathtub hot water purifiers that keep the hot water in a bathtub constantly clean by repeating the process of pumping the hot water from the bathtub with an electric pump and passing it through a predetermined purification mechanism and then returning it to the bathtub again.
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.
[0003]
[Problems to be solved by the invention]
However, in the above-described conventional purification device, 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 is expensive. In addition, since the electric pump is operated for 24 hours, there is a problem that the running cost is increased due to the electricity cost.
An object of the present invention is to solve such problems of the prior art.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the bathtub hot water cleaning device of the present invention introduces an electric pump for circulating bathtub water between the bathtub and the cleaning mechanism, and introduces the bathtub hot water at a predetermined time by midnight power. Means for heating and storing bath water, a hot water temperature sensor for detecting the temperature of the bath water , means for determining whether or not the hot water temperature detected by the hot water temperature sensor is below a predetermined value, When the switch is on and the means for determining determines that the hot water temperature is equal to or lower than a predetermined value , means for supplying heated hot water storage from the means for storing to the bath water; and at the predetermined time , Means for driving the electric pump with midnight power , and means for supplying the electric pump that is not turned on and / or that the means for judging is not less than or equal to a predetermined value. Is on Means for detecting a, when there is a detection by means of said detection, characterized by comprising a means for forcibly stopping the electric pump.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, this bathtub hot water purifier is composed of a purifier A and a midnight power heat storage device B. Hot water in the bathtub 1 is pumped up by a pump 2, sent to a filtration tank 3, filtered here, sterilized by a sterilizer 4, and returned to the bathtub 1.
The arrangement of the pump 2, the filtration tank 3, and the sterilizer 7 can be changed, and other devices can be added.
A hot water temperature sensor 8 is provided in the circulation path near the outlet of the bathtub 1 so as to detect the temperature of the bathtub hot water.
[0006]
Bath water from the filtration tank 3 is also supplied to the heat storage tank 10 of the midnight power heat storage device B, where it is heated and stored by midnight power. The accumulated hot water in the heat storage tank 10 is mixed with bathtub water circulating by opening and closing of the solenoid valve 7 to heat the bathtub water. The opening and closing of the solenoid valve 7 is controlled by the control circuit 6, and when the bath water temperature detected by the hot water temperature sensor 8 is lower than the set temperature, or when a heating or reheating operation is performed, the control circuit 6 The valve 7 is opened and hot water is mixed with the bath water.
[0007]
The pump 2 is normally driven by a metered lamp power source, and the power source is switched by the power source changeover switch 5 only during the midnight power period so that the pump 2 is operated by the midnight power.
With this configuration, the electricity cost for driving the pump 2 can be reduced.
Note that there are a 1-way system and a 2-way system in the form of a contract for midnight power, and only in the case of the 2-way system, there is an effect of reducing the electricity cost for driving the pump 2.
[0008]
The heat storage tank 10 has high heat insulation properties, and stores heat while maintaining the temperature of the hot water stored inside. The heat storage tank 10 is provided with a heater 13, and the time switch 12 is turned on at a predetermined time in the middle of the night to heat hot water in the heat storage tank 10 using low-cost electric power at night. . Then, the time switch 12 is turned off at a predetermined time in the morning of the next day, and heating by the heater 13 is stopped.
The piping from the filtration tank 3 is connected to the bottom of the heat storage tank 10, low-temperature bath water is collected below the heat storage tank 10, and hot water heated by the heater 13 is collected above the heat storage tank 10. It is like that.
The heat storage tank 10 is provided with a control circuit 11, which controls the heat storage tank 10 and at the same time controls the power supply selector switch 5 on the purification device A side, so that the time switch 12 is turned on at midnight. The pump 2 is operated by electric power.
[0009]
FIG. 2 shows an embodiment of the control circuit 11 and the power supply switch 5.
The time switch 12 is connected to a midnight power source and is connected to the heater 13 via the switch 18 so as to heat the bath water in the heat storage tank 10 in the midnight time zone. The time switch 12 is turned on to supply power when a predetermined midnight time zone is reached, and is turned off to stop power supply when the midnight time zone is over.
A relay 19 is connected to the output side of the time switch 12 via a transformer T1 and a power supply circuit 20, and when the time switch 12 is turned on, the power supply switch 5 is switched. The power switch 5 is connected to the metered-lamp light source and the time switch 12, and the pump 2 is selectively connected to either one by switching.
[0010]
The output side of the power supply circuit 20 is connected to the reference value setting switch 16, and the reference value corresponding to the resistance value selected by the reference value setting switch 16 is compared with the temperature detected by the thermistor 14 by the comparator 15. The result relay 17 is energized or de-energized so that the switch 18 is turned on and off. The thermistor 14 detects the temperature of hot water in the heat storage tank 10, and when the temperature is higher than a predetermined value, the switch 18 is turned off and heating by the heater 13 is not performed.
With the above configuration, when the hot water temperature in the heat storage tank 10 is equal to or lower than a predetermined value in the midnight time zone, heating by the heater 13 is performed by midnight power, and the driving of the pump 2 is switched to midnight power. Therefore, the electricity cost required for the operation of the pump 2 can be reduced.
[0011]
FIG. 3 shows an embodiment of the control circuit 6.
When the user presses the operation switch 40, the flip-flop FF is inverted to open the gate G3, the transistor TR22 is turned on, the relay 22 is energized, the switch 21 shown in FIG. 2 is turned on, and the pump 2 is driven.
When the user presses the temperature setting switch 30, the number of times is counted by the counter 31, and this is stored in the register 32 as the set temperature of the bath water, and at the same time, the set temperature is displayed on the display panel 41. ing. This set temperature is detected by the hot water temperature sensor 8 in the comparator 33, and compared with the detected temperature of the bath water input to the comparator 33 via the amplifier 34 and the A / D converter 35, and the detected temperature is set to the set temperature. If lower, the gate G2 is turned on, the transistor TR33 is turned on through the gate G3, the relay 36 is energized, the switch 37 is turned on and the electromagnetic valve 7 is opened, and hot water in the heat storage tank 10 is bathed. It is mixed with hot water and heated.
[0012]
As a result of comparison in the comparator 33, when the temperature of the bath water is equal to or higher than a predetermined value (50 ° C. in this example), the temperature is too high, so the flip-flop FF is reset via the OR gate G1 and the relay 22 is turned off. The pump 2 is stopped at once.
If the switch 37 is turned on even though the gate G3 is turned off, it is determined that there is some failure, and this is detected by the photocoupler 50, and the pump 2 is similarly turned off via the gate G4 and the OR gate G1. It is supposed to be.
As described above, when the pump 2 is forcibly stopped, a signal is sent from the transmitter 52 via the encoder 51. 53 is an oscillator. This transmission is also performed when the fall sensor 54 detects a fall of the apparatus.
Reference numeral 45 denotes a power supply circuit.
[0013]
According to the embodiment described above, the temperature of the bath water in the bathtub 1 is maintained at a predetermined temperature by the supply of hot water from the heat storage tank 10. Moreover, since the heating in the heat storage tank 10 is performed with midnight power with a low charge, the cost for heating can be reduced. In addition, since the operation of the pump 2 is also performed by the midnight power during the midnight power period, the electricity cost required for the operation of the pump 2 can be reduced. If the switch 37 is turned on even though the gate G3 is turned off, it is determined that there is some failure, and the pump 2 is forcibly stopped. Therefore, hot water is not supplied unintentionally, which is safe.
[0014]
【The invention's effect】
As described above, according to the bathtub hot water purification apparatus using midnight power according to the present invention, heating and circulation of hot water are performed using midnight power. The electricity bill can be reduced, and the running cost can be reduced. Moreover, high-temperature hot water is not supplied when not intended, and the safety level can be increased.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an embodiment of the present invention.
FIG. 2 is a block diagram showing a configuration of a control circuit 11 and its periphery in an embodiment of the present invention.
FIG. 3 is a block diagram showing a configuration of a control circuit 6 and its periphery in an embodiment of the present invention.
[Explanation of symbols]
1: bathtub, 2: pump, 3: filtration tank, 4: sterilizer, 5: power switch, 6: control circuit, 7: solenoid valve, 8: hot water temperature sensor, 10: heat storage tank, 11: control circuit, 12: Time switch, 13: Heater, 14: Thermistor, 15: Comparator, 16: Reference value setting switch, 17: Relay, 18: Switch, 19: Relay, 20: Power supply circuit, 21: Switch, 22: Relay, 30: Temperature setting switch, 31: Counter, 32: Register, 33: Comparator, 34: Amplifier, 35: A / D converter, 36: Relay, 37: Switch, 40: Operation switch, 41: Display panel, 42 : Display changeover switch, 45: power supply circuit, 50: photocoupler, 51: encoder, 52: transmitter, 53: oscillator, 54: fall sensor.

Claims (1)

An electric pump for circulating bath water between the bathtub and the cleaning mechanism;
Means for heating and storing the bath water at a predetermined time by introducing the bath water at midnight power;
A hot water temperature sensor for detecting the temperature of the bath water,
Means for determining whether the hot water temperature detected by the hot water temperature sensor is equal to or lower than a predetermined value;
Means for supplying heated hot water storage from the means for storing to the bath water when the switch of the electric pump is on and the determining means determines that the hot water temperature is below a predetermined value ;
Means for driving the electric pump with midnight power at the predetermined time;
Means for detecting that the switch of the electric pump is not on and / or the means for judging is not judged to be a predetermined value or less and the means for supplying is on;
Means for forcibly stopping the electric pump when there is detection by the means for detecting;
A bath water purifier using late-night power, characterized by comprising:

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