JP2022177896A - bathtub cleaning controller - Google Patents

Abstract

To provide a bathtub cleaning controller provided with an interlock function for preventing failure of a bathtub cleaning device without inhibiting opening/closing of an automatic drain plug.SOLUTION: A bathtub cleaning controller (22) having a control part (24) for controlling a bathtub cleaning device (20) performing bathtub cleaning operation includes: a power source part (23) for supplying power for driving to a plurality of electric loads equipped in the bathtub cleaning device (20) and an automatic drain plug (4) of a bathtub; and a voltage detection part (25) for detecting that the power source part (23) is connected to a power source of a higher voltage than a prescribed standard voltage. There is provided an interlock function of prohibiting bathtub cleaning operation while permitting power supply for driving to the automatic drain plug (4) from the power source part (23) when the voltage detection part (25) detects connection to a power source of a higher voltage than a standard voltage.SELECTED DRAWING: Figure 2

Description

The present invention relates to a bathtub cleaning controller that controls a bathtub cleaning device that cleans a bathtub using hot water supplied from a water heater.

2. Description of the Related Art Conventionally, a bath hot water supply system has been used in which a drain plug of a bathtub can be opened and closed in conjunction with a hot water supply apparatus that supplies hot water to the bathtub. This bath hot water supply system is convenient because it can automatically close the drain plug at a preset time to fill the bath with hot water. The bathtub drain plug (automatic drain plug) is also opened and closed by the user's operation of the drain switch.

On the other hand, there is used a bathtub cleaning apparatus that automatically cleans the bathtub by spraying a cleaning liquid in the bathtub and then rinsing the bathtub by spraying hot water. The bathtub cleaning device performs the bathtub cleaning operation by receiving hot water supply from the hot water supply device while the drain plug of the bathtub is open. high affinity with Therefore, the bath hot water supply system is combined with the bathtub cleaning device to form a bathtub cleaning system.

The bathtub cleaning system receives electric power to drive the electric motor that drives the automatic drain plug, the solenoid valve installed in the bathtub cleaning device, and the like. may have different drive voltages. For example, in Patent Document 1, there is an on-off valve having a drive voltage higher than that of the automatic drain plug, and when the on-off valve is driven, power is supplied to the on-off valve by the drive voltage of the automatic drain plug, and then the on-off valve is driven. A bathtub cleaning system configured to be powered with a high drive voltage is described.

JP 2019-141198 A

The bathtub cleaning apparatus has a bathtub cleaning controller for driving control of electromagnetic valves and the like in the bathtub cleaning operation. The bathtub cleaning controller not only controls the bathtub cleaning device, but also supplies driving power to the bathtub cleaning device. When combining the bath hot water supply system with the bathtub cleaning device, the automatic drain plug is connected to receive power from the bathtub cleaning controller so as to facilitate power supply.

The automatic drain valve and the bathtub cleaning device are installed in an environment near the bathtub where it is likely to be exposed to water, but the bathtub cleaning controller is often installed in the ceiling of the bathroom where it is not exposed to water. In addition to the standard voltage (standard voltage) 100V AC power supply, a high voltage 200V AC power supply may be drawn into the ceiling space of the bathroom.

If a bathtub cleaning controller designed for connection to a standard voltage 100V AC power supply is mistakenly connected to a high voltage 200V AC power supply, there is a risk of damage to components that receive higher voltage power than normal. Therefore, the bathtub cleaning controller incorporates an interlock function that inhibits power supply if it is incorrectly connected to a high voltage AC power supply. However, the interlock function does not allow the automatic drain plug to be activated, preventing the user from bathing.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bathtub cleaning controller with an interlock function for preventing failure of the bathtub cleaning device without interfering with the opening and closing of the automatic drain plug.

According to a first aspect of the invention, there is provided a bathtub cleaning controller having a control unit for controlling a bathtub cleaning device that performs a bathtub cleaning operation, wherein a plurality of electrical loads provided in the bathtub cleaning device and an automatic drain plug of the bathtub Each has a power supply section that supplies driving power, and a voltage detection section that detects that the power supply section is connected to a power supply having a voltage higher than a predetermined standard voltage, wherein the voltage detection section is higher than the standard voltage. provided with an interlock function that prohibits the bathtub cleaning operation while permitting driving power supply from the power supply unit to the automatic drain plug when connection to a high voltage power supply is detected. Characterized by

According to the above configuration, when the power supply section of the bathtub cleaning controller is connected to a power supply having a voltage higher than the standard voltage, the bathtub cleaning operation is prohibited, thereby preventing damage to the bathtub cleaning device and automatically cleaning the bathtub. Power supply for driving is allowed for the drain plug. Therefore, even if the power supply section of the bathtub cleaning controller is erroneously connected to a power supply with a voltage higher than the standard voltage, the interlock function that prohibits the bathtub cleaning operation while permitting the supply of driving power to the automatic drain plug automatically It is possible to open and close the drain plug. Therefore, the bathtub can be filled with hot water and drained, and the user's bathing is not hindered.

According to a second aspect of the invention, there is provided a bathtub cleaning controller according to the first aspect of the invention, wherein the power supply unit supplies high-voltage power of a voltage generated based on the standard voltage to at least one of the plurality of electrical loads. The automatic drain valve is supplied with low-voltage power that is lower than the voltage generated based on the standard voltage.
According to the above configuration, at least one of the plurality of electrical loads of the bathtub cleaning apparatus having different operating voltages is supplied with high-voltage power of a voltage generated based on the standard voltage, and the voltage generated based on the standard voltage is supplied to at least one of the electric loads. Low-voltage power is supplied to the automatic drain valve at a voltage lower than the voltage applied to the automatic drain valve. When the power supply section of the bathtub cleaning controller is connected to a power supply with a voltage higher than the standard voltage, the electric load that receives high voltage power is not driven by the prohibition of the bathtub cleaning operation, so it does not receive high voltage power higher than normal. , can prevent breakage. On the other hand, for automatic drain plugs that receive low-voltage power that is lower than high-voltage power, low-voltage power can be supplied to open and close automatic drain plugs even when they are incorrectly connected to a power supply with a voltage higher than the standard voltage. can.

According to a third aspect of the invention, there is provided a bathtub cleaning controller according to the first aspect of the invention, wherein the power supply unit comprises a primary supply unit for supplying high voltage power having a voltage generated based on the standard voltage; is converted into low-voltage power lower than the voltage generated based on the standard voltage and supplied to at least one of the plurality of electrical loads, the primary Power is supplied from the supply unit, and power is supplied to the automatic drain plug from the secondary supply unit.
According to the above configuration, at least one of the plurality of electrical loads of the bathtub cleaning apparatus is supplied with high-voltage power of a voltage generated based on the standard voltage from the primary supply section, and the automatic drain cock is supplied with the primary power. Low-voltage power is supplied from a secondary supply unit that converts part of the high-voltage power from the supply unit into low-voltage power that is lower than the voltage generated based on the standard voltage and supplies the low-voltage power. When the power supply section of the bathtub cleaning controller is connected to a power supply with a voltage higher than the standard voltage, the electric load that receives high voltage power is not driven by the prohibition of the bathtub cleaning operation, so it does not receive high voltage power higher than normal. , can prevent damage. On the other hand, for automatic drain plugs receiving low-voltage power, low-voltage power can be supplied to open and close the automatic drain plugs even when erroneously connected to a power source with a voltage higher than the standard voltage.

The bathtub cleaning controller of the invention of claim 4 is connected to the automatic drain valve in the invention of any one of claims 1 to 3 so that only driving power can be supplied from the power supply unit, The control unit is characterized in that it does not control the opening and closing of the automatic drain plug.
According to the above configuration, the bathtub cleaning controller supplies electric power to the bathtub cleaning apparatus and controls the bathtub cleaning operation, and only supplies driving electric power to the automatic drain plug. Therefore, for example, even if the automatic drain valve is configured to be controlled by a controller other than the bathtub cleaning controller, and the bathtub cleaning controller is erroneously connected to a power source with a higher voltage than the standard voltage, the bathtub cleaning operation is prohibited. Since driving power is supplied to the automatic drain plug independently from the bathtub cleaning device, the automatic drain plug can be opened and closed, and the user's bathing is not disturbed.

According to the bathtub cleaning controller of the present invention, the interlock function prevents failure of the bathtub cleaning device and permits automatic opening and closing of the drain plug when the bathtub cleaning device is erroneously connected to a power source with a voltage higher than the standard voltage.

1 is an explanatory diagram of a bathtub cleaning system according to Example 1 of the present invention; FIG. It is explanatory drawing of a bathtub cleaning controller. FIG. 4 is an explanatory diagram of a bathtub cleaning operation; FIG. 4 is an explanatory diagram of a bathtub cleaning system according to Embodiment 2 of the present invention;

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing this invention is demonstrated based on an Example.

First, the overall configuration of the bathtub cleaning system 1 will be described with reference to FIG.
A water heater 10 for filling and reheating the bathtub 2 is connected to the bathtub 2 via a reheating passage 3 and a circulation adapter 2a. Further, at the bottom of the bathtub 2, as indicated by an arrow D, an automatic drain plug 4, for example, of an electric motor type for draining hot water from the bathtub 2, and an automatic drain plug 4 for cleaning the bathtub 2 by spraying cleaning liquid and jetting hot water. A washing nozzle 5 of a bathtub washing device 20 is arranged.

The bathtub cleaning device 20 has a cleaning nozzle 5 , a detergent tank 6 for storing detergent, and a supply unit 21 for supplying hot water and cleaning liquid to the cleaning nozzle 5 . In the vicinity of the bathtub 2, a supply unit 21, a detergent tank 6, and a drain switch 7 for opening and closing the automatic drain plug 4 by the user are arranged. A hot water passage (hot water supply passage 8 ) supplied from hot water supply device 10 is connected to supply unit 21 . This hot water supply passage 8 is also connected to, for example, a callan 9 as another hot water supply destination.

The hot water supply device 10 is a combustion hot water supply device that heats clean water supplied as indicated by an arrow W by combustion heat of fuel gas and supplies hot water adjusted to a predetermined temperature. It may be a hot water supply device or the like having a heat source machine of . The hot water supply device 10 supplies hot water at a preset hot water supply set temperature to, for example, the faucet 9, and supplies hot water at a preset hot water supply set temperature to the bathtub 2 until it reaches a predetermined water level (amount of hot water). Various operations such as a hot water filling operation and a reheating operation for heating the hot water in the bathtub 2 and returning it to the bathtub 2 are performed.

The hot water supply apparatus 10 is installed, for example, in a bathroom as a hot water supply operation terminal for performing operation for starting hot water filling operation, operation for starting reheating operation, setting operation for setting hot water supply temperature, setting operation for setting hot water supply temperature, and the like. A bathroom remote controller 10a installed in the bathroom and a kitchen remote controller 10b installed in the kitchen, for example, are connected.

A bathtub cleaning controller 22 for controlling a bathtub cleaning device 20 that performs a bathtub cleaning operation is disposed in a location that is less likely to be exposed to water than in the vicinity of the bathtub 2, for example, in the ceiling space of the bathroom. A bathtub cleaning system 1 is composed of the hot water supply device 10, the bathtub cleaning device 20 that receives hot water supply from the hot water supply device 10, the bathtub cleaning controller 22, and the automatic drain plug 4 of the bathtub 2.

The supply unit 21 has a hot water passage 35 for supplying hot water to the washing nozzle 5 . The hot water passage 35 is equipped with a venturi 36 for gradually mixing detergent with the hot water supplied to the washing nozzle 5 to generate a washing liquid. A filter 37 for collecting foreign matter in the hot water is provided at the entrance of the hot water passage 35 to which the hot water supply passage 8 is connected.

Between the filter 37 of the hot water passage 35 and the venturi 36 are a cleaning flow rate adjusting valve 38 equipped with a temperature sensor, a cleaning flow rate sensor 40, an electromagnetic valve (hot water valve 41), an atmosphere release valve 42a, 42b, a check valve 43a, 43b is equipped. Connected to the venturi 36 is a detergent passage 45 equipped with a solenoid valve (detergent valve 44 ) for supplying detergent from the detergent tank 6 . The washing flow rate adjustment valve 38, the washing flow rate sensor 40, the hot water valve 41, and the detergent valve 44 correspond to a plurality of electric loads of the bathtub washing device 20. It is an electrical load that requires high voltage drive power.

The bathtub cleaning controller 22 is connected to a plurality of electrical loads of the supply unit 21 by power cables so that power can be supplied to each of the electrical loads. For these electrical loads, for example, by superimposing a communication signal on the power to be supplied, communication is possible via a power cable, but a separate communication cable may be connected. Bathtub cleaning controller 22 is also communicably connected to water heater 10 .

Moreover, the bathtub cleaning controller 22 is connected to the automatic drain plug 4 via the drain switch 7 so as to be able to supply driving power. The drain switch 7 is configured such that driving power is supplied from the bathtub cleaning controller 22 to the automatic drain plug 4 via the drain switch 7 for a certain period of time, for example, when operated by the user. The automatic drain valve 4 receives driving power and operates from open to closed or from closed to open. 4 may be switched between opening and closing. Further, for example, when a hot water filling operation start operation is performed from the kitchen remote controller 10b, the hot water supply apparatus 10 as a controller other than the bathtub cleaning controller 22 operates the drain switch 7 via the bathtub cleaning controller 22, and the bathtub cleaning controller 22 is activated. Electric power for driving is supplied to the automatic drain plug 4 to close the automatic drain plug 4. - 特許庁

The bathtub washing controller 22 is connected to a washing remote controller 34 for starting the bathtub washing operation, setting the required temperature of hot water used in the bathtub washing operation, and the like. The washing remote controller 34 is often installed in a dressing room adjacent to the bathroom.

In the bathtub cleaning operation, the bathtub cleaning controller 22 performs opening adjustment of the cleaning flow rate adjustment valve 38 and opening/closing control of the hot water valve 41 and the detergent valve 44 . Also, the bathtub cleaning controller 22 is connected so as to be able to detect the amount of detergent remaining in the detergent tank 6 by, for example, the float switch 6a.

The bathtub cleaning controller 22 will be described.
The bathtub cleaning controller 22, as shown in FIG. 2, drives a plurality of electric loads of the bathtub cleaning device 20 and a power supply section 23 that supplies electric power to the plurality of electrical loads of the bathtub cleaning device 20 and the automatic drain plug 4. It has a controller 24 that controls the bathtub cleaning device 20 . The control unit 24 has a voltage monitoring circuit unit 25 (voltage detection unit), a calculation unit 26 , a first drive circuit unit 27 and a second drive circuit unit 28 .

The calculation unit 26 calculates the voltage information from the voltage monitoring circuit unit 25, the detected flow rate from the cleaning flow rate sensor 40, etc. based on the control program, and operates the first drive circuit unit 27 or the second drive circuit unit 28 based on the calculation result. It controls the washing flow rate adjustment valve 38, the hot water valve 41, and the detergent valve 44, which are the electric loads of the bathtub washing device 20, via.

The power supply section 23 has a primary supply section 29 and a secondary supply section 30 . The primary supply unit 29 converts AC power input from the AC power source E into DC power and supplies the DC power. The secondary supply unit 30 converts the DC power from the primary supply unit 29 into low-voltage DC power and supplies the DC power. The secondary supply section 30 is insulated from the primary supply section 29 , and power is supplied from the primary supply section 29 to the secondary supply section 30 via the transformer 31 .

The primary supply unit 29 has a first rectifying circuit unit 29a, a first smoothing circuit unit 29b, and a switching power supply circuit unit (SW power supply circuit unit) 29c. The AC power input from the AC power supply E is converted into DC power having a voltage based on the voltage of the input AC power by the first rectifying circuit section 29a and the first smoothing circuit section 29b. The DC power supplied from the primary supply unit 29 is assumed to be high-voltage power.

When the AC power supply E is an AC power supply with a predetermined standard voltage, for example, 100 V, and the power supply unit 23 is connected to the AC power supply E with this standard voltage, the AC power with the standard voltage to be input is supplied by the primary supply unit 29 in advance. It is converted into DC power (high voltage power) of a set reference voltage (eg, 140 V). On the other hand, when the AC power source E is a 200 V AC power source with a higher voltage than the standard voltage, and the power supply unit 23 is connected to this high voltage AC power source E, the input AC power is supplied to the primary supply unit 29 , the DC power is converted to a higher voltage (for example, 280 V) than the reference voltage. It should be noted that the predetermined standard voltage can have a certain amount of width so as to correspond to various power supply environments. For example, it may be 161V.

A part of the high voltage power is supplied to the switching power supply circuit section 29c, converted into pulsed power having a higher frequency than the input from the AC power supply E, and supplied to the transformer 31. FIG. In addition, high-voltage power can be supplied to the electric load (hot water valve 41) that requires high-voltage power for driving the bathtub cleaning device 20. FIG. The hot water valve 41 is, for example, a normally closed type solenoid valve, and requires high-voltage power supplied from the primary supply unit 29 in order to overcome the urging force for preventing hot water leakage or the water pressure to open the valve. be.

The secondary supply section 30 has a second rectifying circuit section 30a and a second smoothing circuit section 30b. The pulse-like power, which is lower in voltage than the high-voltage power input through the transformer 31, is converted into low-voltage (for example, 15 V) DC power. The DC power supplied from the secondary supply unit 30 is assumed to be low-voltage power. The low voltage power is supplied to the controller 24 . In addition, it can be supplied to electric loads (for example, the cleaning flow control valve 38 and the detergent valve 44) that require low-voltage power of the bathtub cleaning device 20 and the automatic drain plug 4. The cleaning flow rate adjustment valve 38 adjusts the flow rate of hot water flowing through the hot water passage 35 by adjusting the opening degree using, for example, a stepping motor. At this time, low-voltage power is required as power for driving the cleaning flow rate control valve 38 for accurate high-speed operation and opening degree maintenance. The detergent valve 44 is a normally closed electromagnetic valve with a smaller urging force than the hot water valve 41 because it does not receive a large pressure, and is driven by the low voltage power supplied from the secondary supply section 30 .

The control unit 24 operates by receiving supply of low-voltage power, controls the driving of the electric load that is driven by receiving high-voltage power through the first drive circuit unit 27, and controls the electric load that is driven by receiving low-voltage power. In contrast, drive control is performed via the second drive circuit section 28 . The control unit 24 may include a step-down circuit unit (not shown) that steps down the voltage (for example, 5 V, 3.3 V) required for operation as necessary.

The voltage monitoring circuit unit 25 detects the voltage of the high-voltage power of the primary supply unit 29, and transmits voltage information indicating whether the high-voltage power is the reference voltage or an overvoltage higher than the reference voltage to the calculation unit 26. do. When the received voltage information is the reference voltage, the calculation unit 26 drives the bathtub cleaning device 20 assuming that it is connected to the standard voltage AC power supply, and performs the bathtub cleaning operation.

On the other hand, if the received voltage information is overvoltage, the computing unit 26 assumes that the bathtub cleaning device 20 is connected to an AC power supply with a voltage higher than the standard voltage. Bathtub cleaning operation is prohibited in such a state. Therefore, the electric loads (cleaning flow rate adjustment valve 38, hot water valve 41) that receive high voltage power from the primary supply unit 29 during operation are in a state where power can be supplied, but high voltage power with an overvoltage higher than the reference voltage is applied. The water is not supplied, and failure of the bathtub cleaning device 20 is prevented.

Since the secondary supply unit 30 is provided on the output side of the switching power supply circuit unit 29c, it is not affected by the fact that the power supply unit 23 is connected to an AC power supply with a higher voltage (for example, 200 V) than the standard voltage. Even when the power supply unit 23 is connected to an AC power supply with a voltage higher than the standard voltage, the power is converted to a required low voltage low voltage power (for example, 15 V DC power) and supplied. Therefore, even if the power supply unit 23 is erroneously connected to an AC power supply with a voltage higher than the standard voltage, the automatic drain plug 4 can be supplied with low-voltage power for driving, and the control unit 24 can operate normally. do. Therefore, the bathtub cleaning operation can be prohibited by the interlock function that prohibits the bathtub cleaning operation while permitting the power supply for driving from the power supply unit 23 to the automatic drain plug 4 .

Next, the bathtub cleaning operation will be described.
The bathtub cleaning operation is performed while the bathtub 2 is covered with a lid (not shown) so that the cleaning liquid and the like do not splash outside the bathtub 2 . When the washing remote control 34 is operated to start the bathtub washing operation, the bathtub washing operation is started if the power supply section 23 of the bathtub washing controller 22 is connected to the standard voltage AC power supply. On the other hand, when the power supply unit 23 of the bathtub cleaning controller 22 is connected to an AC power supply with a voltage higher than the standard voltage, the bathtub cleaning operation is not started by the interlock function, and the output (voice , display) indicates an error.

As shown in FIG. 3, the bathtub cleaning operation is performed in the order of a preparation step, a cleaning step, and a finishing step. In the preparation process, as a preparation before washing, the user is urged to open the automatic drain plug 4 and cover the bathtub 2 by the output (voice, display) from the washing remote control 34. For example, after a predetermined time has passed, the washing process is started. proceed to When the automatic drain plug 4 is closed, the automatic drain plug 4 receives the low-voltage power supplied from the secondary supply section 30 and is opened by the user operating the drain switch 7 before the predetermined time elapses. plugged.

In the cleaning step, hot water is sprayed into the bathtub 2 from the cleaning nozzle 5 and cleaning liquid is sprayed. For example, as a preliminary cleaning, the hot water valve 41 that receives high-pressure electric power is opened to spray hot water and water to permeate the dirt adhering to the bathtub 2 with water. At this time, the cleaning flow control valve 38 that receives the high voltage power is driven and maintained at the adjusted opening. After that, the detergent valve 44 that receives the low-voltage power is also opened, and the washing liquid mixed with the detergent is sprayed from the washing nozzle 5 through the detergent passage 45 into the hot water flowing through the venturi 36. After that, the hot water valve 41 and the detergent valve 44 are closed for a certain period of time. stand by. This spraying of the cleaning liquid and waiting for a certain period of time are repeated for a prescribed number of times to float the dirt adhering to the bathtub 2. - 特許庁

After spraying the cleaning liquid and waiting for a certain period of time are repeated a predetermined number of times, hot water is jetted from the cleaning nozzle 5 as rinsing to wash away dirt and the cleaning liquid. In the end step, the completion of the cleaning of the bathtub 2 is notified, for example, by an output (audio or display) from the cleaning remote control 34, and the bathtub cleaning operation is terminated.

An example in which the first embodiment is partially modified will be described. Parts equivalent to those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and descriptions thereof are omitted.
As shown in FIG. 4, the bathtub cleaning apparatus 20 includes a supply unit 21A constructed so as not to be affected by the supply pressure of tap water, a bathtub cleaning controller 22, and the like. The supply unit 21A has a hot water tank 51 and a pump 52 in the middle of the hot water passage 35, and supplies the hot water stored in the hot water tank 51 to the washing nozzle 5 at a predetermined washing flow rate.

Between the hot water tank 51 and the filter 37, two parallel passages each provided with a hot water valve 41 and a constant flow valve 53 are connected in parallel so that the water level of the hot water tank 51 can fluctuate within a predetermined range. It has a passage portion 54 . When the pump 52 supplies hot water to the washing nozzle 5 at a predetermined washing flow rate, the water level in the hot water tank 51 rises when both hot water valves 41 of the parallel passage portion 54 are opened. When the hot water valve 41 is opened, the water level of the hot water tank 51 is lowered.

The two hot water valves 41 of the parallel passage portion 54 and the pump 52 are electrical loads of the bathtub cleaning device 20 that receive high-voltage power from the primary supply portion 29 of the power supply portion 23 of the bathtub cleaning controller 22 . A detergent valve 44 for supplying detergent to the venturi 36 is an electrical load of the bathtub cleaning device 20 that receives low voltage power from the secondary supply 30 of the power supply 23 . Also, the automatic drain plug 4 is driven by being supplied with low-voltage power from the secondary supply section 30 of the power supply section 23 .

As in the first embodiment, when an AC power supply with a voltage higher than the standard voltage is erroneously connected, the bathtub cleaning operation is prohibited while permitting the power supply for driving from the power supply unit 23 to the automatic drain plug 4. The interlock function prohibits the bathtub cleaning operation while electric power can be supplied. The automatic drain plug 4 driven by the low-voltage power supplied from the secondary supply unit 30 can be opened and closed by operating the drain switch 7 .

The operation and effects of the bathtub cleaning controller 22 will be described.
The bathtub washing controller 22 prevents the bathtub washing device 20 from being damaged by prohibiting the bathtub washing operation when the power supply section 23 of the bathtub washing controller 22 is connected to a power supply having a voltage higher than the standard voltage. Electric power for driving is allowed to be supplied to the automatic drain plug 4 of the bathtub 2. - 特許庁Therefore, even if the power supply unit 23 of the bathtub cleaning controller 22 is erroneously connected to a power supply with a voltage higher than the standard voltage, the interlock function prohibits the bathtub cleaning operation while permitting power supply for driving the automatic drain plug 4. , the automatic drain plug 4 can be opened and closed. Therefore, the bathtub 2 can be filled with hot water and drained, and the user's bathing is not hindered.

At least one of the plurality of electrical loads (hot water valve 41, pump 52) of the bathtub cleaning device 20 with different operating voltages receives high-voltage power generated from the primary supply unit 29 based on the standard voltage. supplied. Further, a part of the high-voltage power from the primary supply unit 29 is converted into low-voltage power that is lower than the voltage generated based on the standard voltage, and the low-voltage power is supplied from the secondary supply unit 30 to the automatic drain plug 4. supplied to When the power supply unit 23 of the bathtub cleaning controller 22 is connected to a power supply with a voltage higher than the standard voltage, the electrical loads (hot water valve 41, pump 52) that receive high voltage power are not driven because the bathtub cleaning operation is prohibited. It is possible to prevent damage without receiving high voltage power higher than that. On the other hand, for the automatic drain plug 4 that receives low voltage power, the automatic drain plug 4 can be opened and closed by supplying the low voltage power even when the power supply having a higher voltage than the standard voltage is erroneously connected.

The bathtub washing controller 22 supplies power to the bathtub washing device 20 and controls the bathtub washing operation, and only supplies power to the automatic drain plug 4 for driving. Therefore, even if the automatic drain plug 4 is configured to be controlled by, for example, the hot water supply apparatus 10 as a controller instead of the bathtub cleaning controller 22, and the bathtub cleaning controller 22 is erroneously connected to a power supply with a voltage higher than the standard voltage, Since driving power is supplied to the automatic drain plug 4 independently from the bathtub cleaning device 20 prohibited from the bathtub cleaning operation, the automatic drain plug 4 can be opened and closed, and the user's bathing is not disturbed.

In addition, those skilled in the art can implement various modifications to the above-described embodiments without departing from the scope of the present invention, and the present invention includes such modifications.

1: Bathtub cleaning system 2: Bathtub 2a: Circulation adapter 3: Reheating passage 4: Automatic drain valve 5: Washing nozzle 6: Detergent tank 6a: Float switch 7: Drain switch 8: Hot water supply passage 9: Callan 10: Water heater 10a : Bathroom remote controller 10b: Kitchen remote controller 20: Bathtub cleaning device 21, 21A: Supply unit 22: Bathtub cleaning controller 23: Power supply unit 24: Control unit 25: Voltage monitoring circuit unit (voltage detection unit)
26: calculation unit 27: first drive circuit unit 28: second drive circuit unit 29: primary supply unit 29a: first rectifier circuit unit 29b: first smoothing circuit unit 29c: switching power supply circuit unit 30: secondary supply unit 30a: Second rectifying circuit section 30b: Second smoothing circuit section 31: Transformer 34: Cleaning remote controller 35: Hot water passage 36: Venturi 37: Filter 38: Cleaning flow rate adjustment valve (electrical load)
40: Washing flow rate sensor 41: Hot water valve (electrical load)
42a, 42b: atmosphere release valves 43a, 43b: check valve 44: detergent valve (electrical load)
45: Detergent passage 51: Hot water tank 52: Pump (electrical load)
53: Constant flow valve 54: Parallel passage part

Claims (4)

A bathtub cleaning controller having a control unit that controls a bathtub cleaning device that performs a bathtub cleaning operation,
A power supply unit that supplies driving power to a plurality of electric loads installed in the bathtub cleaning device and an automatic drain plug of the bathtub, respectively, and that the power supply unit is connected to a power supply having a higher voltage than a predetermined standard voltage. has a voltage detection unit that detects
When the voltage detection unit detects connection to a power supply having a voltage higher than the standard voltage, the bathtub cleaning operation is prohibited while permitting driving power supply from the power supply unit to the automatic drain plug. A bathtub washing controller, characterized by comprising an interlock function. The power supply unit supplies high-voltage power of a voltage generated based on the standard voltage to at least one of the plurality of electric loads, and a voltage generated based on the standard voltage to the automatic drain valve. 2. The bathtub cleaning controller according to claim 1, wherein said bathtub cleaning controller supplies low voltage power having a voltage lower than that of said bath tub cleaning controller. The power supply unit includes a primary supply unit for supplying high voltage power having a voltage generated based on the standard voltage, and a part of the high voltage power having a voltage lower than the voltage generated based on the standard voltage. has a secondary supply unit that converts to low-voltage power of
2. The method of claim 1, wherein at least one of the plurality of electrical loads is powered by the primary supply, and the automatic drain plug is powered by the secondary supply. Bathtub cleaning controller. The automatic drain plug is connected to the power supply unit so that only driving power can be supplied, and the control unit does not control the opening and closing of the automatic drain plug. A bathtub washing controller according to any one of claims 1 to 3.

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