JP3745833B2 - 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.
[0002]
[Problems to be solved by the invention]
However, in the conventional purification apparatus, in order to keep hot water at an appropriate temperature, it is necessary to always perform heating with an electric heater, and there is a problem that the running cost becomes expensive.
Therefore, in recent years, a system has been proposed that heats bath water in a heat storage tank using a low-cost heat source such as midnight power, stores the water, and supplies it to a bathtub as appropriate.
However, in the case of such a system, there is a risk of emptying the heat storage tank, and in the case of a system using midnight power, there are problems that the heater is damaged or the temperature fuse needs to be restored. For this reason, proposals have been made to provide a water-filled sensor or the like in the heat storage tank, but there is a problem in reliability because the sensor is attached to the hot part.
The object of the present invention is to solve the above-mentioned problems of the prior art.
[0003]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a bath water cleaning apparatus for circulating and purifying bath water between a bathtub and a cleaning mechanism, for introducing the bath water, heating it to a predetermined temperature, and storing it. Means, means for supplying hot water of a predetermined temperature from the means for storing to the bathtub, means for detecting the temperature of the bath water on the inlet side to the means for storing from the bathtub, and the bath Detecting by means of detecting the water temperature from the means for storing the temperature of the water on the outlet side to the bathtub, and after the supply operation by the means for supplying is executed for a predetermined time. Comparing the temperature of the bath water, and detecting that there is a temperature difference equal to or higher than a predetermined temperature and heating in the means for storing, when there is a temperature difference equal to or higher than the predetermined temperature, The temperature difference above the predetermined temperature is And means for performing a post-implementation heating bath water to the means for the storing time have characterized by comprising a.
In the above configuration, the means for storing performs a heating operation at an appropriate time to store the heated hot water, so that, for example, midnight power can be used, and the cost required for heating can be reduced.
In addition, when heating in the storage means, after the supply operation is performed for a predetermined time, the temperature on the water inlet side and the water outlet side is detected, and depending on whether or not the temperature difference is greater than or equal to a predetermined value, If it is determined that there is no bath water, the bath water is introduced before heating is performed. Therefore, it is possible to prevent emptying in the means for storing. Moreover, since the determination is based on the temperature detection on the water inlet side and the water outlet side, there is no need to provide a means for storing a water filling sensor or the like, and there is an effect that high reliability can be obtained.
[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. A user selects operation / stop and whether or not to keep the bath water warm, sets the bath warming temperature, and the like by the remote controller 5 attached to the wall surface of the bathroom. The remote controller 5 is connected to a control board 6 in the main body by a cord, and displays an operation state, hot water temperature, time, various warnings, etc. in the main body. A water absorption port 8 incorporating a pre-filter 7 is connected in the bathtub at the end of the water intake pipe 3, and bath water from which hair has been removed is sucked into the main body.
[0005]
A circulation pump 9 is installed in the other main body of the water inlet pipe 3, and a check valve for water is provided in the middle of the water inlet pipe 3 so that bath water in the main body does not return to the bathtub when the circulation pump is stopped. 10 is attached. The flow path is divided into two directions on the water discharge side of the circulation pump 9, one is connected to the filter medium tank 12 via the throttle 11, and the other is connected to the water inlet side below the heat storage tank 13 with a hose via the heating valve 27. It is connected. The heating valve 27 is opened when heating is required, and bath water is supplied to the heat storage tank 13 from the lower side and the hot water is discharged from the upper side.
[0006]
The filter medium tank 12 contains a filter medium 15 such as ceramic balls and activated carbon, and purifies the bath water. When the filter medium is clogged due to long-term use, the tank lid 16 is opened, the filter medium is taken out, and can be hand-washed with tap water. The outlet side of the filter medium tank 12 is connected to one inlet side of the mixing valve 17 by a hose.
[0007]
The circulation pump 9 is provided with a water shortage sensor 14 in parallel so that a decrease in the level of the bath water can be detected. The water shortage sensor 14 is of a type that detects the differential pressure of the circulation pump 9, and one tube is connected to the water input side of the circulation pump 9 and the other tube is connected to the water discharge side of the circulation pump 9.
[0008]
A heat storage heater 18 and a heat storage tank lower hot water temperature sensor 19 are attached to the lower part of the heat storage tank 13, and the bath water in the tank is heated to a predetermined temperature by using late-night power to make hot water. Since the density of bath water (about 40 ° C.) and hot water is different, hot water is discharged from the heat storage tank 13 by the amount of bath water that has entered the heat storage tank 13, and the bath water and hot water are stored in the heat storage tank 13. Do not mix. The upper part of the heat storage tank 13 is connected to the other incoming water side of the mixing valve 17 by a hose. The mixing valve 17 adjusts an internal valve for the bath water that has passed through the filter medium tank 12 and the hot water that has come out from the upper part of the heat storage tank 13 to an appropriate predetermined hot water temperature. To be discharged.
In this embodiment, a heat storage tank upper hot water temperature sensor 29 is provided in the upper part of the heat storage tank 13, and the temperature difference between the heat storage tank lower hot water temperature sensor 19 and the heat storage tank upper hot water temperature sensor 29 is detected, so that heat is stored temporarily. Although the water filling state of the tank 13 can be detected, the heat storage tank upper hot water temperature sensor 29 is not necessarily provided.
The heating valve 27 and the mixing valve 17 are controlled by the control board 6 as described later.
[0009]
The control board 6 is provided with a heating control device 26, and is configured not to perform emptying by the heat storage heater 18 in the heat storage tank 13.
A water inlet side hot water temperature sensor 20 is attached to the water inlet pipe 3, and when the bath water temperature detected by the water inlet side hot water temperature sensor 20 falls below the heat retention temperature set by the user, the warming valve 27 is turned on. When the bath temperature and the hot water are mixed by the mixing valve 17 and discharged to the bathtub, and the bath water temperature exceeds a predetermined value (about 0.5 ° C.) above the heat retaining temperature, only the bath water is discharged to the bathtub. The valve of the mixing valve 17 is controlled by a pulse motor or the like, and has a built-in phase detection sensor for determining its initial phase as shown in FIG.
The discharge side of the mixing valve 17 is connected to the jet nozzle 21 via the water discharge pipe 4, and a discharge water temperature sensor 22 is provided near the discharge side of the mixing valve 17 in order to detect the temperature of the discharged bath water. It is attached.
[0010]
The heating control device 26 performs heating by the heat storage heater 18 at a predetermined time that is determined in advance. At that time, the heating valve 27 and the mixing valve 17 are controlled to perform hot water supply operation for a predetermined time, Thereafter, the detected temperatures from the incoming water temperature sensor 20 and the outgoing water temperature sensor 22 are input. And this temperature is compared and a temperature difference is detected. That is, if the temperature of the outlet water temperature sensor 22 is sufficiently higher than the temperature of the inlet water temperature sensor 20 by a predetermined value or more, the heat storage tank 13 is filled with bath water, so there is a risk of emptying the heat storage tank 13. It comes to judge that there is not. In this case, heating is performed.
On the other hand, if the temperature of the outlet side hot water temperature sensor 22 is not sufficiently higher than the predetermined value than the inlet side hot water temperature sensor 20, the heat storage tank 13 may not be filled with bath water, and there is a risk of emptying. It comes to judge that there is. In this case, the heating valve 27 is opened for a predetermined time to fill the heat storage tank 13 with bath water, and then heated.
[0011]
The jet solenoid valve 23 and the ozone generator 24 are connected to the jet nozzle 21 via the air tube 25. During a clean operation other than bathing, the jet solenoid valve 23 and the ozone generator 24 are turned on, Air mixed with ozone is discharged from the jet nozzle 21 to sterilize the bath water. When bathing, the ozone generator 24 is turned off, and the jet solenoid valve 23 is turned on and off with the jet key of the remote controller 5 so that the presence or absence of the jet can be selected. The jet nozzle 21 has a narrow inner diameter so that air is mixed therein.
[0012]
FIG. 2 shows an electric block diagram.
The remote controller 5 is connected to the control board 6 in the main body 1 by a communication code 101, and is connected to the CPU 103 via the communication interface 102. The CPU 103 is a one-chip microcomputer incorporating a ROM and a RAM. Based on information from the key 104 and the CPU 201 in the control board, a predetermined display is displayed on the LCD 106 and the LED 107 via the driver 105 and a buzzer 108 is sounded. The key 104 includes an operation key, a jet key, a bathing key, a heat retention key for selecting whether to perform heat retention, a heat retention temperature setting key, and the like.
[0013]
The control board 6 in the main body includes a water shortage sensor 14, an incoming water temperature sensor 20, an outgoing water temperature sensor 22, a heat storage tank lower water temperature sensor 19, a heat storage tank upper water temperature sensor 29, and a phase detection sensor for the mixing valve 17. And the like, the heat storage heater 18 that is an output device, the circulation pump 9, the ozone generator 24 that is a sterilizer, the electromagnetic valve 23 for jetting, the heating valve 27, the mixing valve 17 and the like are connected via a relay, a driver, or the like. Yes. And AC100V via AC100V AC power supply side earth leakage breaker 202, transformer 203 and AC200V midnight power side earth leakage breaker 204 are connected.
[0014]
Next, the inside of the control board 6 will be described.
The DC power supply 205 receives the transformer secondary voltage and generates the circuit voltage Vcc (+5 V), Vd (+12 V) which is the power supply for the sterilizer and the jet solenoid valve, and Vb (+36 V) which is the power supply for the stepping motor of the mixing valve 17. is doing. The communication code 101 from the remote controller 5 side is connected to the CPU 201 via the communication interface 206, and exchanges information with the CPU 103 on the remote controller side. Each of the hot water temperature sensors 20, 22, 19, and 29 is connected to the AD input terminal of the CPU 201 via the voltage converter 207 so that the voltage changes over a necessary temperature range.
[0015]
The energization start detector 208 detects the start of energization of the midnight power AC200V, and the heating control device 26 makes a predetermined determination, and the driver 209 controls the heat storage heater relay 210. When the start of energization is detected (11:00 pm) and it is determined that heating is possible, the hot water temperature at the lower part of the heat storage tank 13 from the heat storage tank lower hot water temperature sensor 19 is checked, and the hot water in the heat storage tank is boiled to a predetermined temperature. The energization time required to increase the time is calculated to determine the ON time T of the relay 210. If no hot water remains in the heat storage tank 13 and all have the same hot water temperature as the lower part of the heat storage tank 13, the relay 210 is turned on with a delay of (8-T) hours from 11:00 pm, and thereafter the lower part of the heat storage tank The heat storage heater 18 is energized until the hot water temperature sensor 19 detects a predetermined temperature.
[0016]
The heating control device 26 controls the driver 217 to open the heating valve 27, compares the detected temperatures from the incoming water temperature sensor 20 and the outgoing water temperature sensor 22 after a predetermined time, and executes the above-described determination. . When the heating is possible, the heating by the heat storage heater 18 is performed. When the heating is not possible, the heating valve 27 is opened for a predetermined time, and the heat storage tank 13 is filled with bath water, and then the heat storage heater 18 performs the heating. It is like that.
[0017]
When the operation key in the remote controller 5 is pressed to enter the operation mode, the relay 211 is turned on and the circulation pump 9 is energized to circulate the bath water. Normally, the driver 212 is turned on and the ozone generator 24 is operated to sterilize the bath water. However, when the bath key in the remote control is pressed, the bath mode is entered and the driver 212 is turned off for one hour to sterilize the device. To prevent the user from applying ozone.
[0018]
When the jet key is pressed during the bathing mode, the driver 213 is turned on to energize the jet solenoid valve 23, so that air is supplied to the jet nozzle and a water flow with bubbles can be enjoyed. When the button is pushed again, the driver 213 is turned off and the water flow is free from bubbles. In addition, after the bathing key is pressed, the mode is automatically switched to the clean mode after one hour, the driver 212 and the driver 213 are turned on, the air mixed with ozone is given to the jet nozzle, and the bath water is sterilized.
[0019]
When the power is turned on, the motor in the mixing valve 17 is moved to receive the signal from the phase detection sensor and perform initial setting. While the circulating pump 9 is in operation, the heat retention temperature set by the temperature setting key in the remote controller is compared with the detected temperature of the incoming water temperature sensor 20, and the motor in the mixing valve 17 is operated to adjust the valve to bath water. It is comprised so that temperature may be controlled in the range of heat retention temperature-heat retention temperature +0.5 degreeC.
Reference numeral 216 stores the setting values such as the heat retention temperature and the operation mode set by the user in the EEPROM so that they do not need to be reset when the power is turned on again after a power failure.
[0020]
The heating operation of the heat storage tank 13 will be described with reference to FIG.
When heating conditions such as energization start are satisfied (step S1), first, a temperature difference between the heat storage tank lower hot water temperature sensor 19 and the heat storage tank upper hot water temperature sensor 29 is detected to perform primary water filling detection (step S2). . Here, if there is a temperature difference, it is clear that the heat storage tank 13 is filled with bath water, and the process proceeds to step S7. This step S2 can be omitted. When there is no temperature difference, the heating valve 27 is opened for a predetermined time (step S3), and the temperatures of the outlet water temperature sensor 22 and the incoming water temperature sensor 20 are compared (step S4). When the temperature on the outlet side hot water temperature sensor 22 side is higher than a predetermined value, it is determined that the heat storage tank 13 is filled with bath water, and the heating valve 27 is closed (step S6). When the temperature on the outlet side hot water temperature sensor 22 side is not higher than a predetermined value, it is determined that there is no bath water in the heat storage tank 13, and the heating valve 27 is opened for a certain period of time to fill the heat storage tank 13 with bath water ( Step S5), and then the heating valve 27 is closed (Step S6). And the heat storage tank 13 is heated by the heat storage heater 18 (step S7).
With the above configuration, it is possible to prevent the heat storage tank 13 from being aired. Further, it is not necessary to provide a water filling sensor or the like in the heat storage tank 13, and highly reliable heating control can be performed.
[0021]
【The invention's effect】
As described above, according to the bath water purification apparatus of the present invention, since midnight power or the like can be used as a heating heat source in the means for storing, the cost required for heating can be reduced, and the running cost can be reduced. In addition, there is an effect that it is possible to effectively prevent airing in the means for storing without using a water filling sensor or the like.
[Brief description of the drawings]
FIG. 1 is a schematic block diagram showing an embodiment of the present invention.
FIG. 2 is a block diagram showing a configuration of a main body 1, a remote controller 5, and a control board 6 in an embodiment of the present invention.
FIG. 3 is a flowchart for explaining the operation of the embodiment of the present invention.
[Explanation of symbols]
1: main body, 2: bathtub, 3: inlet pipe, 4: outlet pipe, 5: remote control, 6: control board, 7: pre-filter, 8: water inlet, 9: circulation pump, 10: check valve for water, 11: Restriction, 12: Filter tank, 13: Heat storage tank, 14: Water shortage sensor, 15: Filter medium, 16: Tank lid, 17: Mixing valve, 18: Heat storage heater, 19: Heat storage tank lower hot water temperature sensor, 20 : Incoming water temperature sensor, 21: Jet nozzle, 22: Outlet water temperature sensor, 23: Solenoid valve for jet, 24: Ozone generator, 25: Air tube, 26: Heating control device, 27: Heating valve, 29: Thermal storage tank upper hot water temperature sensor, 101: Communication code, 102: Communication interface, 103: CPU, 104: Key, 105: Driver, 106: LCD, 107: LED, 108: Buzzer, 201: CP 202: Earth leakage breaker 203: Transformer 204: Earth leakage breaker 205: DC power supply 206: Communication interface 207: Voltage converter 208: Energization start detector 209: Driver 210: Heat storage heater relay 211 : Relay, 212: driver, 213: driver, 214: driver, 215: waveform shaping circuit, 216: EEPROM, 217: driver.

Claims (2)

In the bath water cleaning device for purifying the bath water by circulating between the bathtub and the cleaning mechanism,
Means for introducing and heating the bath water to a predetermined temperature and storing;
Means for supplying hot water of a predetermined temperature from the means for storing to the bathtub;
Means for detecting the temperature of the bath water on the incoming side to the means for storing from the bathtub;
Means for detecting on the outlet side to the bathtub from means for storing the temperature of the bath water;
After the supply operation by the supply means is executed for a predetermined time, the bath water temperatures detected by the two detection means are compared, and a difference between the temperature and the predetermined temperature is detected. Means,
When heating in the means for storing, when there is a temperature difference equal to or higher than the predetermined temperature, heating is performed, and when there is no temperature difference equal to or higher than the predetermined temperature, heating is performed after introducing bath water into the means for storing. Means for
A bath water purifier characterized by comprising: Heating in the means for storing is performed by a heat storage heater using midnight power, and the presence or absence of the temperature difference is determined at a predetermined energization start time, and according to the determination result, that is, or after bath water is introduced, the heat storage heater , And stop energization at a predetermined energization stop time.
The bath water purification apparatus according to claim 1.

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