JP7369658B2 - bath equipment - Google Patents

Description

The technology disclosed herein relates to a bath device.

Patent Document 1 describes a bathtub, a circulation path for circulating water in the bathtub, a circulation pump provided in the circulation path, a tank provided in the circulation path for dissolving gas in water, and a circulation path. A pressure pump installed upstream of the tank, a gas introduction part connected to the tank and capable of introducing gas into the tank, a fine bubble discharge nozzle attached to the bathtub, and one end connected to the water supply source. A bath device is disclosed that includes a water supply channel that is connected to the water supply channel and whose other end is connected to a circulation path, a water supply valve that is provided in the water supply channel and opens and closes the water supply channel, and a control device. . When the water supply valve is in a closed state, the control device drives the circulation pump and the pressurizing pump to perform a water supply operation in which water from the tank is spouted into the bathtub through the microbubble discharge nozzle, and the water supply valve is operated. is in a closed state and the pressurizing pump is stopped, a gas introduction operation for introducing gas into the tank from the gas introduction part, and a fine bubble supply operation can be executed. The control device is configured to start the fine bubble supply operation when receiving a first start instruction instructing to start the fine bubble supply operation, and to end the fine bubble supply operation when the operation end condition is satisfied. ing.

Japanese Patent Application Publication No. 2009-18118

In the bath device of Patent Document 1, the control device executes a tank cleaning operation in which water supplied from a water supply source is supplied to the tank when an operation termination condition is satisfied. However, in the bath device of Patent Document 1, no consideration is given to a situation in which execution of the fine bubble supply operation is interrupted before the operation termination condition is satisfied. If the bath device does not perform the tank cleaning operation after interrupting the fine bubble supply operation, the water supplied from the bathtub will remain in the tank. Water supplied from a bathtub contains more foreign substances than water supplied from a water supply source. If water contaminated with foreign matter remains in the tank, there is a risk that bacteria will breed in the water in the tank. When microbubble supply operation is executed after bacteria have grown in the water in the tank, the water in which the bacteria have grown is squirted into the bathtub. Therefore, there is a need for a technology that can keep the inside of the tank clean even when the fine bubble supply operation is interrupted.

The present invention provides a technique that can keep the inside of a tank clean even when the fine bubble supply operation is interrupted.

A bath device according to an embodiment disclosed in this specification includes a bathtub, a circulation path for circulating water in the bathtub, a circulation pump provided in the circulation path, and a circulation pump provided in the circulation path. , a tank for dissolving gas in water; a pressurizing pump provided upstream of the tank in the circulation path; and a gas introduction part connected to the tank and capable of introducing gas into the tank. , a fine bubble discharge nozzle attached to the bathtub; a water supply channel having one end connected to a water supply source and the other end connected to the circulation path; The control device includes a water supply valve that opens and closes, and a control device, and the control device drives the circulation pump and the pressure pump when the water supply valve is in a closed state to drain water from the tank. In a water supply operation in which water is ejected into the bathtub through the fine bubble discharge nozzle, and in a state where the water supply valve is in the closed state and the pressurizing pump is stopped, the gas is discharged from the gas introduction part into the tank. The device is configured to be able to execute a gas introduction operation in which gas is introduced into the air, and a fine bubble supply operation in which the fine bubble supply operation is performed, and when receiving a first start instruction instructing to start the fine bubble supply operation, the fine bubble supply operation is performed. The device is configured to start the operation and end the fine bubble supply operation when an operation end condition is satisfied, and the operation end condition is such that the number of times the water supply operation and the gas introduction operation are performed reaches a predetermined number of times. or, a predetermined period of time has elapsed since the start of the fine bubble supply operation, and after the start of the fine bubble supply operation and before the operation end condition is satisfied, the fine bubble supply operation is started. When receiving an interruption instruction instructing interruption of water supply, the water supply valve is opened, the pressure pump is driven, water supplied from the water supply source is supplied to the tank , and the water in the tank is It is configured to perform a tank cleaning operation in which water is discharged into the bathtub .

According to the above configuration, the control device executes the tank cleaning operation when interrupting the fine bubble supply operation. Therefore, even if the fine bubble supply operation is interrupted, the water in the tank is replaced with clean water supplied from the water supply source. Therefore, even if the fine bubble supply operation is interrupted, the inside of the tank can be kept clean.

The wall of the bathtub has a first discharge port connected to the circulation path, and the amount of water discharged from the first discharge port is the vertical component of water with respect to the wall where the first discharge port is installed. A first discharge port and a second discharge port connected to the circulation path, the amount of water being discharged from the second discharge port is greater than the amount of parallel component water to the wall where the first discharge port is installed. The amount of water applied to the second outlet is such that the amount of water in the parallel component to the wall where the second outlet is installed is greater than the amount of water in the vertical component to the wall where the second outlet is installed. An exit may be provided. In the water supply operation, water discharged from the tank into the bathtub passes through the first discharge port and is discharged into the bathtub, and in the tank cleaning operation, water discharged from the tank into the bathtub passes through the second discharge port. , may be discharged into the bathtub.

In the water supply operation, water is sucked into the circulation path from the bathtub, passes through the circulation path and the tank, and is discharged into the bathtub. Therefore, the temperature of the water discharged into the bathtub is approximately the same as the temperature of the water inside the bathtub. Therefore, in the water supply operation, even if the water discharged from the first discharge port directly hits the bather, the bather will not feel uncomfortable. On the other hand, in the tank cleaning operation, water supplied from the water supply source passes through the circulation path and the tank and is discharged into the bathtub. In this case, for example, if the water supplied from the water supply source to the circulation path is not heated, the temperature of the water discharged into the bathtub and the temperature of the water in the bathtub may be significantly different. In such a situation, if the water discharged into the bathtub hits the bather directly, the bather may feel uncomfortable. According to the above configuration, in the tank cleaning operation performed after the fine bubble supply operation is interrupted, water discharged from the tank into the bathtub passes through the second discharge port and is discharged into the bathtub. Therefore, in the tank cleaning operation, water discharged from the tank into the bathtub can be prevented from directly hitting the bather. As a result, the comfort of the user using the bath device can be improved.

The bath device may further include a heating device that is provided in the circulation path and heats the water in the circulation path. The control device is configured to be able to drive the circulation pump and the heating device to perform a reheating operation that heats water in the bathtub when the water supply valve is closed and the pressurizing pump is stopped. The reheating operation may be started when the second start instruction instructing the start of the reheating operation is received. The interruption instruction may include a second start instruction received after starting the fine bubble supply operation and before the operation termination condition is satisfied. If the control device receives an interruption instruction based on the second start instruction after starting the fine bubble supply operation and before the operation termination condition is met, the control device executes the reheating operation before the tank cleaning operation and performs the reheating operation. The tank cleaning operation may be performed after the firing operation is finished.

If the control device receives an interruption instruction based on the second start instruction after starting the fine bubble supply operation but before the operation termination condition is satisfied, the control device must perform the reheating operation and the tank cleaning operation. In this case, a configuration may be considered in which the reheating operation is executed after the tank cleaning operation is executed. According to such a configuration, the reheating operation is not started until the tank cleaning operation is finished. In this case, the reheating operation desired by the bather is not performed immediately, causing discomfort to the bather. According to the above configuration, the reheating operation desired by the bather is immediately executed, so that the bather does not feel uncomfortable. Therefore, the comfort of the user using the bath device can be improved.

It is a figure showing the composition of the bath system concerning an example (water supply state). It is a figure showing the composition of the bath system concerning an example (air introduction state). It is a figure showing the composition of the bath system concerning an example (reheating state). It is a figure showing the composition of the bath system concerning an example (tank cleaning state). FIG. 3 is a diagram schematically showing a circulation connector according to an example. It is a flowchart which shows the driving process concerning an example. It is a flowchart which shows the fine bubble supply operation process based on an Example.

(Example)
(Configuration of bath system 2)
The bath system 2 will be explained with reference to FIGS. 1 to 4. The bath system 2 includes a heat source unit 10, a microbubble generation unit 50, a bathtub 130, and a control device 150. The heat source unit 10 is connected to a water supply source 200 and a microbubble generation unit 50. The micro bubble generation unit 50 is connected to the heat source unit 10 and the bathtub 130. In addition, below, the case where water flows in the direction of the arrow shown in FIG. 1 is demonstrated as an example.

(Configuration of heat source unit 10)
The heat source unit 10 is a unit that heats water flowing through a waterway within the heat source unit 10 and supplies the heated water to the bathtub 130. The heat source unit 10 includes a heat source device 12, a water supply channel 20, a first return channel 22, a second return channel 23, and a first outgoing channel 24.

The upstream end of the first return waterway 22 is connected to the microbubble generation unit 50 (specifically, the third return waterway 60), and the downstream end is connected to the heat source side switching valve 28. The upstream end of the second return water channel 23 is connected to the heat source side switching valve 28, and the downstream end is connected to the heat source device 12. The second return waterway 23 is provided with a circulation pump 30 and a water flow switch 32. The circulation pump 30 is provided upstream of the water flow switch 32, and sends water upstream of the circulation pump 30 to the downstream side. The water flow switch 32 detects that water is passing through the second return waterway 23. The heat source device 12 is, for example, a gas heat source device that heats water passing through the heat source device 12.

The upstream end of the water supply channel 20 is connected to a water supply source 200 such as a city water supply, and the downstream end of the water supply channel 20 is connected to a heat source side switching valve 28. A hot water filling valve 26 is provided in the water supply channel 20. The hot water filling valve 26 opens and closes the water supply channel 20. The heat source side switching valve 28 is in a first switching state (the state shown in FIGS. 1 to 3) in which the first return waterway 22, the second return waterway 23, and the supply waterway 20 are in communication with each other, and the second return waterway 23 and the supply waterway 20 are in communication with each other. A second switching state (the state shown in FIG. 4) in which the water supply channel 20 is in communication can be switched.

The upstream end of the first outgoing waterway 24 is connected to the heat source device 12, and the downstream end is connected to the fine bubble generation unit 50 (specifically, the second outgoing waterway 68).

(Configuration of micro bubble generation unit 50)
The micro bubble generation unit 50 includes a tank 52, a third return waterway 60, a second outflow waterway 68, a water supply waterway 74, a communication waterway 66, a spout waterway 64, a fourth return waterway 62, and a third waterway. It includes an outgoing waterway 70 and an air introduction path 100.

The tank 52 can store water therein. Inside the tank 52, a low water level electrode 52a and a high water level electrode 52b for detecting the water level in the tank 52 are installed. The water level detected by the low water level electrode 52a (hereinafter referred to as "lower limit water level") is lower than the water level detected by the high water level electrode 52b (hereinafter referred to as "upper limit water level"). When the low water level electrode 52a and the high water level electrode 52b come into contact with the water surface of the water stored in the tank 52, they output an ON signal to the control device 150. The tank 52 is used to generate air-dissolved pressurized water in which air is dissolved under pressure in water.

The upstream end of the third return waterway 60 is connected to the communication waterway 66, and the downstream end is connected to the heat source unit 10 (specifically, the first return waterway 22). The communication waterway 66 connects the first switching valve 80 and the second switching valve 82. One end of the fourth return water channel 62 is connected to the first switching valve 80, and the other end is connected to the bathtub 130 (specifically, the circulation connector 132). The upstream end of the jet water channel 64 is connected to the lower part of the tank 52, and the downstream end is connected to the first switching valve 80. The spout waterway 64 is provided with a check valve 84 that prevents water from flowing from the first switching valve 80 side to the tank 52 side. The first switching valve 80 is configured to operate in a first communication state (the state shown in FIG. 1) in which the jet water channel 64 and the fourth return water channel 62 are in communication, and in a second communication state (in which the jet water channel 64 and the communication water channel 66 are in communication). 2 and 4) and a third communication state (the state of FIG. 3) in which the fourth return waterway 62, the jet waterway 64, and the communication waterway 66 are in communication.

The upstream end of the second outgoing waterway 68 is connected to the heat source unit 10 (specifically, the first outgoing waterway 24), and the downstream end is connected to the second switching valve 82. One end of the third outgoing waterway 70 is connected to the bathtub 130 (specifically, the circulation connector 132), and the other end is connected to the second switching valve 82. The second switching valve 82 operates in a fourth communication state (the state shown in FIGS. 1 and 4) in which the third outflow waterway 70 and the communication waterway 66 communicate with each other, and in a fifth communication state in which the second outflow waterway 68 and the third outflow waterway 70 communicate with each other. It is possible to switch between the communication state (the state shown in FIGS. 2 and 3).

The second outflow waterway 68 and the tank 52 are connected by a water supply waterway 74. The water supply waterway 74 is provided with a water supply control valve 86 and a pressure pump 88. The water supply control valve 86 opens and closes the water supply channel 74. The water supply control valve 86 is provided upstream of the pressure pump 88. The pressurizing pump 88 pressurizes the water in the water supply channel 74 and sends it out downstream. Below, the state of the bath system 2 when the heat source side switching valve 28 is in the first switching state, the first switching valve 80 is in the first communication state, and the second switching valve 82 is in the fourth communication state (the state in FIG. 1) is called a "water supply state", in which the heat source side switching valve 28 is in the first switching state, the first switching valve 80 is in the second communication state, and the second switching valve 82 is in the second switching state. The state of the bath system 2 when it is in the 5 communication state (the state in FIG. 2) is called the "air introduction state", and the heat source side switching valve 28 is in the first switching state, and the first switching valve 80 is in the third communication state. state, and the state of the bath system 2 when the second switching valve 82 is in the fifth communication state (the state in FIG. 3) is called the "reheating state", and the heat source side switching valve 28 is in the second switching state. The state of the bath system 2 (state in FIG. 4) when the first switching valve 80 is in the second communication state and the second switching valve 82 is in the fourth communication state is referred to as the "tank cleaning state". ” is called.

The upstream end of the air introduction path 100 is open to the atmosphere, and the downstream end is connected to the tank 52. The air introduction path 100 introduces air into the tank 52. An air control valve 102 is provided in the air introduction path 100. Air control valve 102 opens and closes air introduction path 100.

(Configuration of circulation connector 132)
Next, the circulation connector 132 connected to the wall 130a of the bathtub 130 will be described with reference to FIGS. 5(a) to 5(c). 5(a) to (c) are diagrams schematically showing cross sections of the circulation connector 132. FIG. The arrows in FIGS. 5(a) to 5(c) indicate the flow of water. FIG. 5(a) shows the water flow when the bath system 2 is in the water supply state (the state in FIG. 1), and FIG. 5(b) shows the water flow when the bath system 2 is in the reheating state (the state in FIG. 3). 5(c) shows the flow of water when the bath system 2 is in the air introduction state (the state in FIG. 2) or in the tank cleaning state (the state in FIG. 4). In addition, below, the up-down direction of FIG. 5 will be called the up-down direction, and the left-right direction of FIG. 5 will be called the front-back direction.

The circulation connector 132 includes an upper water channel 136 and a lower water channel 138. The upper waterway 136 communicates with the fourth return waterway 62, and the lower waterway 138 communicates with the third outflow waterway 70. The upper water channel 136 is branched into a first discharge path 136a and a first suction path 136b. The first discharge passage 136a communicates with a first discharge port 134a provided on the front surface 132a of the circulation connector 132. Water discharged from the first discharge port 134a is discharged in front of the wall 130a of the bathtub 130, that is, in a direction perpendicular to the wall 130a. The first discharge path 136a is provided with a check portion 140a that prevents water from flowing from the front side to the rear side, and a fine bubble discharge nozzle 142. The check portion 140a is provided in front of the fine bubble discharge nozzle 142. The fine bubble discharge nozzle 142 reduces the pressure of water passing through the fine bubble discharge nozzle 142 . The first suction path 136b communicates with a first suction port 134b provided on the front surface 132a of the circulation connector 132. The first suction path 136b is provided with a check portion 140b that prevents water from flowing from the rear side to the front side.

The lower water channel 138 is branched into a second discharge path 138a and a second suction path 138b. The second suction path 138b communicates with a second suction port 134c provided on the front surface 132a of the circulation connector 132. The second suction path 138b is provided with a check portion 140c that prevents water from flowing from the rear side to the front side. The second discharge passage 138a communicates with a second discharge port 134d provided on the lower surface 132b of the circulation connector 132. The water discharged from the second discharge port 134d is discharged downward, that is, in a direction parallel to the wall portion 130a. The second discharge path 138a is provided with a check portion 140d that prevents water from flowing from the lower side to the upper side.

(Configuration of control device 150)
A control device 150 shown in FIGS. 1 to 4 controls the operation of each component of the heat source unit 10 and the microbubble generation unit 50. The control device 150 is configured to be able to communicate with a remote control 154 that can be operated by a user. Control device 150 includes memory 152. The control device 150 can perform a reheating operation, a fine bubble supply operation, etc. in response to a user's operation on the remote control 154.

(Driving process; Figure 6)
Next, the operation process executed by the control device 150 of the bath system 2 will be explained. In the operation processing, the control device 150 executes a reheating operation, a fine bubble supply operation (air introduction operation and a water supply operation), and a tank cleaning operation. The control device 150 starts the process shown in FIG. 6 when the bath system 2 is powered on. In addition, in the initial state of FIG. 6, the heat source side switching valve 28, the first switching valve 80, and the second switching valve 82 are in the first switching state, the third communication state, and the fifth communication state, respectively (see FIG. 3). ). Further, the circulation pump 30 and the pressurizing pump 88 are stopped, and the hot water filling valve 26, the water supply control valve 86, and the air control valve 102 are in a closed state.

In S10, the control device 150 monitors the reception of a reheating start instruction signal from the remote controller 154. The reheating start instruction signal is transmitted from the remote controller 154 when the user performs an operation on the remote controller 154 to instruct execution of the reheating operation. When the reheating start instruction signal is received from the remote controller 154, the control device 150 determines YES in S10, and the process proceeds to S12.

In S12, control device 150 performs reheating operation. The reheating operation is performed when the heat source side switching valve 28 is in the first switching state, the first switching valve 80 is in the third communication state, and the second switching valve 82 is in the fifth communication state (as shown in FIG. This is an operation in which the water in the bathtub 130 is heated by the heat source device 12 in the reheating state). The control device 150 drives the circulation pump 30 and the heat source device 12. As a result, as shown in FIGS. 3 and 5(b), the water in the bathtub 130 flows through the circulation connector 132 (specifically, the first suction port 134b, the first suction path 136b, and the upper water channel 136). , the fourth return waterway 62, the first switching valve 80, the communication waterway 66, the third return waterway 60, the first return waterway 22, the heat source side switching valve 28, and the second return waterway 23. be done. The water heated by the heat source device 12 is then transferred to the first outflow waterway 24, the second outflow waterway 68, the second switching valve 82, the third outflow waterway 70, the circulation connector 132 (in detail, the lower waterway 138, the It is supplied to the bathtub 130 via the second discharge path 138a and the second discharge port 134d.

In S14, the control device 150 monitors that the first operation time has elapsed after starting the reheating operation. If the first operation time has elapsed since the start of the reheating operation, the control device 150 determines YES in S14 and ends the process in FIG. 6 . Note that, when determining YES in S14, the control device 150 stops driving the heat source device 12 and the circulation pump 30. This ends the reheating operation. In addition, in a modification, the control device 150 may determine YES in S14 when the temperature in the bathtub 130 reaches the set temperature.

Further, in S20, the control device 150 monitors the reception of a fine bubble start instruction signal from the remote controller 154 simultaneously with the monitoring in S10. The fine bubble start instruction signal is transmitted from the remote controller 154 when the user performs an operation on the remote controller 154 to instruct execution of the fine bubble supply operation. When the micro bubble start instruction signal is received from the remote controller 154, the control device 150 determines YES in S20, and the process proceeds to S22.

In S22, the control device 150 executes the fine bubble supply operation process shown in FIG. The fine bubble supply operation process is a process for executing a fine bubble supply operation that includes an air introduction operation and a water supply operation. In S50 of FIG. 7, the control device 150 executes an air introduction operation. The control device 150 switches the air control valve 102 to the open state, maintains the heat source side switching valve 28 in the first switching state, switches the first switching valve 80 to the second communication state, and switches the second switching valve 82 to the fifth switching state. The communication state is maintained, and the water supply control valve 86 is maintained in a closed state. This brings the bath system 2 into the air introduction state (see FIG. 2). Note that in S50 after passing through S72, which will be described later, the control device 150 switches the second switching valve 82 to the fifth communication state. Next, the control device 150 drives the circulation pump 30. As a result, as shown in FIGS. 2 and 5(c), water is sucked out from the tank 52 and air is introduced into the tank 52 via the air introduction path 100. The water sucked out from the tank 52 is transferred to the jet water channel 64, the first switching valve 80, the communication channel 66, the third return channel 60, the first return channel 22, the heat source side switching valve 28, the second return channel 23, and the heat source machine. 12, the first outflow waterway 24, the second outflow waterway 68, the second switching valve 82, the third outflow waterway 70, and the circulation connector 132 (in detail, the lower waterway 138, the second discharge path 138a, and the It is discharged into the bathtub 130 via the second discharge port 134d).

In S52, the control device 150 monitors that the water level of the tank 52 becomes lower than the lower limit water level. When the water level of the tank 52 becomes lower than the lower limit water level, the control device 150 determines YES in S52, and the process proceeds to S60. Note that, when determining YES in S52, the control device 150 switches the air control valve 102 to the closed state. This completes the air introduction operation.

Furthermore, simultaneously with the monitoring in S52, the control device 150 monitors reception of an instruction signal from the remote controller 154 in S54. The instruction signal is either a reheating start instruction signal that requests execution of the reheating operation or a fine bubble end instruction signal that instructs the end of the fine bubble supply operation. The fine bubble end instruction signal is generated when the user performs an operation on the remote control 154 to instruct the end of the fine bubble supply operation, or when the user performs an operation on the remote control 154 to turn off the power of the remote control 154. It is transmitted from the remote control 154 when the If the instruction signal is received, the control device 150 determines YES in S54, and the process proceeds to S80.

Further, in S60, the control device 150 starts water supply operation. The control device 150 maintains the heat source side switching valve 28 in the first switching state, switches the first switching valve 80 to the first communication state, switches the second switching valve 82 to the fourth communication state, and maintains the water supply control valve 86. Switch to open state. As a result, the bath system 2 enters the water supply state (see FIG. 1). Next, the control device 150 drives the pressurizing pump 88. As a result, as shown in FIGS. 1 and 5(a), the water in the bathtub 130 is circulated through the circulation connector 132 (specifically, the second suction port 134c, the second suction path 138b, and the lower water channel 138). Third outgoing waterway 70, second switching valve 82, communication waterway 66, third return waterway 60, first return waterway 22, heat source side switching valve 28, second return waterway 23, heat source device 12, first outgoing waterway 24, The water is supplied to the tank 52 via the second outgoing waterway 68 and the water supply waterway 74. At this time, water pressurized by the pressure pump 88 is supplied from the water supply waterway 74 to the tank 52 . Inside the tank 52, air is dissolved in water under pressure. The air-dissolved pressurized water is then transferred from the tank 52 to the jet channel 64, the first switching valve 80, the fourth return channel 62, the circulation connector 132 (in detail, the upper channel 136, the first discharge channel 136a, and the first It is supplied to the bathtub 130 via the outlet 134a). When the air-dissolved pressurized water passes through the fine bubble discharge nozzle 142 in the circulation connector 132, the pressure is reduced to below atmospheric pressure, and when it is spouted into the bathtub 130, it is increased in pressure to atmospheric pressure, and the water in the bathtub 130 is fine bubbles are generated.

In S62, the control device 150 monitors that the water level of the tank 52 becomes equal to or higher than the upper limit water level. When the water level of the tank 52 is equal to or higher than the upper limit water level, the control device 150 determines YES in S62, and the process proceeds to S70. Note that when determining YES in S62, the control device 150 switches the water supply control valve 86 to the closed state and stops the circulation pump 30 and the pressurizing pump 88. This ends the water supply operation.

Furthermore, simultaneously with the monitoring in S62, the control device 150 monitors reception of an instruction signal from the remote controller 154 in S64. When the instruction signal is received from the remote controller 154, the control device 150 determines YES in S64, and the process proceeds to S80.

In S70, control device 150 increases the number of cycles by one. The number of cycles is the number of times air introduction operation and water supply operation are performed.

In S72, the control device 150 determines whether the current number of cycles has reached a predetermined number (for example, five times). When the number of cycles reaches the predetermined number, the control device 150 determines YES in S72, ends the process of FIG. 7, and proceeds to S30 of FIG. 6. On the other hand, if the number of cycles has not reached the predetermined number, the control device 150 determines NO in S72, and the process returns to S50.

Further, when determining YES in S54 or YES in S64, the control device 150 determines in S80 whether or not the instruction signal is a reheating start instruction signal. If the instruction signal is a reheating start instruction signal, the control device 150 determines YES in S80, and the process proceeds to S82. On the other hand, if the instruction signal is not a reheating instruction signal, the control device 150 determines NO in S80, ends the process of FIG. 7, and proceeds to S30 of FIG. 6.

In S82, control device 150 executes reheating operation.

In S84, the control device 150 monitors that the first operation time has elapsed since the start of the reheating operation. If the first operation time has elapsed since the start of the reheating operation, the control device 150 determines YES in S84, ends the process of FIG. 7, and proceeds to S30 of FIG. 6.

Returning to FIG. 6, control device 150 starts tank cleaning operation in S30. The tank cleaning operation is an operation for replacing the water in the tank 52 with clean water supplied from the water supply source 200. The control device 150 switches the heat source side switching valve 28 to the second switching state, switches the first switching valve 80 to the second communication state, switches the second switching valve 82 to the fourth communication state, and opens the hot water filling valve 26. switch to the open state, and switch the water supply control valve 86 to the open state. As a result, the bath system 2 enters the tank cleaning state (see FIG. 4). Next, the control device 150 drives the pressurizing pump 88. As a result, as shown in FIGS. 4 and 5(c), the water supplied from the water supply source 200 is transferred to the water supply channel 20, the second return channel 23, the heat source device 12, the first outbound channel 24, and the second outbound channel. 68, and is supplied to the tank 52 via the water supply conduit 74. The water discharged from the tank 52 is supplied to the jet water channel 64, the first switching valve 80, the communication channel 66, the second switching valve 82, the third outgoing channel 70, the circulation connector 132 (in detail, the lower channel 138, It is discharged into the bathtub 130 via the second discharge path 138a and the second discharge port 134d). In this way, the control device 150 controls whether the fine bubble supply operation ends normally (YES at S72 in FIG. 6) and when the fine bubble supply operation is interrupted (YES at S54 or YES at S64). In either case, tank cleaning operation is performed.

In S32, the control device 150 monitors that the second operation time has elapsed after starting the tank cleaning operation. The second operating time is set as the time required for the water in the tank 52 to be replaced by water supplied from the water supply source 200. If the second operation time has elapsed since the start of the tank cleaning operation, the control device 150 determines YES in S32 and ends the process of FIG. 6. Note that, when ending the tank cleaning operation, the control device 150 switches the heat source side switching valve 28 to the first switching state, switches the first switching valve 80 to the third communication state, and switches the second switching valve 82 to the fifth switching state. The hot water filling valve 26 is switched to a closed state, and the water supply control valve 86 is switched to a closed state.

(Effects of this example)
As described above, the control device 150 of the bath system 2 can execute the fine bubble supply operation (FIG. 7) that executes the water supply operation (S60 in FIG. 7) and the air introduction operation (S50 in FIG. 7). It is configured. When the control device 150 receives the fine bubble start instruction signal instructing the start of the fine bubble supply operation (YES in S20 of FIG. 6), the control device 150 determines the number of cycles of the fine bubble supply operation (that is, the number of cycles of the air introduction operation and the water supply operation). The fine bubble supply operation is configured to be executed until the number of executions (number of executions) reaches a predetermined number of times (for example, five times). When the control device 150 receives an instruction signal after starting the fine bubble supply operation and before the number of cycles reaches a predetermined number (YES in S64 or S84 in FIG. 7), the control device 150 starts the tank cleaning operation (FIG. 6). S30) is configured to be executed. According to the above configuration, the control device 150 executes the tank cleaning operation when interrupting the fine bubble supply operation. Therefore, even if the fine bubble supply operation is interrupted, the water in the tank 52 is replaced with clean water supplied from the water supply source 200. Therefore, even if the fine bubble supply operation is interrupted, the inside of the tank 52 can be kept clean.

Further, as shown in FIG. 5(a), during the water supply operation, water discharged from the tank 52 into the bathtub 130 passes through the first discharge port 134a and is discharged into the bathtub 130. Further, as shown in FIG. 5(c), in the tank cleaning operation, water discharged from the tank 52 into the bathtub 130 passes through the second discharge port 134d and is discharged into the bathtub 130. According to the above configuration, it is possible to suppress water discharged from the tank 52 into the bathtub 130 from directly hitting the bather in the tank cleaning operation performed after the fine bubble supply operation is interrupted. As a result, the comfort of the user using the bath system 2 can be improved.

Further, the control device 150 is configured to start the reheating operation when receiving the reheating start instruction signal. If the control device 150 receives the reheating start instruction signal before the number of cycles (i.e., the number of executions of the air introduction operation and the water supply operation) reaches a predetermined number after starting the fine bubble supply operation, the control device 150 receives the reheating start instruction signal. , a reheating operation is performed before the tank cleaning operation (S82, S84 in FIG. 7), and a tank cleaning operation is performed after the reheating operation is completed (S30 in FIG. 6). According to such a configuration, the reheating operation desired by the bather is immediately executed, so that the bather does not feel uncomfortable. Therefore, the comfort of the user using the bath system 2 can be improved.

(correspondence)
The bath system 2 is an example of a "bath device." The first return waterway 22, the second return waterway 23, the first outflow waterway 24, the third return waterway 60, the second outflow waterway 68, the spout waterway 64, the communication waterway 66, the water supply waterway 74, the fourth return waterway 62, and , the third outgoing waterway 70 is an example of a "circulation path." The hot water filling valve 26 is an example of a "water supply valve." The number of cycles is an example of "the number of times the gas introduction operation and the water supply operation are executed." The instruction signal, the reheating start instruction signal, and the microbubble end instruction signal are examples of the "interruption instruction." The fine bubble start instruction signal and the reheating start instruction signal are examples of a "first start instruction" and a "second start instruction", respectively. Air is an example of a "gas." The air introduction path 100 and the air control valve 102 are an example of a "gas introduction section". The air introduction operation is an example of a "gas introduction operation." The heat source device 12 is an example of a "heating device".

Although each embodiment has been described in detail above, these are merely illustrative and do not limit the scope of the claims. The techniques described in the claims include various modifications and changes to the specific examples illustrated above.

(First Modification) In the fine bubble supply operation process in FIG. 7, instead of S70 and S72, the control device 150 determines whether a predetermined time has elapsed since starting the fine bubble supply operation process. Good too. In this modification, when the control device 150 determines that a predetermined period of time has elapsed since the start of the fine bubble supply operation process, the control device 150 ends the process of FIG. 7 and proceeds to S30 of FIG. 6. On the other hand, if the control device 150 determines that the predetermined time has not elapsed since starting the fine bubble supply operation process, the process returns to S50.

(Second Modification) In the tank cleaning operation (S30 in FIG. 6), the control device 150 switches the heat source side switching valve 28 to the second switching state, switches the first switching valve 80 to the first communication state, and switches the first switching valve 80 to the first communication state. The switching valve 82 may be switched to the fourth communication state, the hot water filling valve 26 may be switched to the open state, and the water supply control valve 86 may be switched to the open state. In this modification, water discharged from the tank 52 into the bathtub 130 during the tank cleaning operation passes through the first discharge port 134a of the circulation connector 132 and is discharged into the bathtub 130.

(Third Modification) S80 to S84 in FIG. 7 may be executed after the determination in S32 in FIG. 6 is YES. In this modification, when the control device 150 receives the reheating start instruction signal during execution of the fine bubble supply operation, the control device 150 executes the reheating operation after executing the tank cleaning operation.

(Fourth Modification) In the above embodiment, the heat source unit 10 and the micro-bubble generation unit 50 are configured integrally, but the heat source unit 10 and the micro-bubble generation unit 50 may be configured separately. good. In this modification, the control device 150 uses a remote controller for instructing the reheating operation executed by the heat source unit 10 and a remote controller for instructing the fine bubble supply operation executed by the fine bubble generation unit 50. Configured to enable communication.

(Fifth Modification) In the above embodiment, air is introduced into the tank 52. In a modification, a gas such as carbon dioxide, hydrogen, or oxygen may be introduced into the tank 52 instead of air. In this case, a tank filled with gas may be disposed at the upstream end of the air introduction path 100.

(Sixth Modification) The "gas introduction section" is not limited to the air introduction path 100 and the air control valve 102, but may also be the air introduction path 100 and an air pump connected to the air introduction path 100. good.

The technical elements described in this specification or the drawings exhibit technical utility alone or in various combinations, and are not limited to the combinations described in the claims as filed. Furthermore, the techniques illustrated in this specification or the drawings can achieve multiple objectives simultaneously, and achieving one of the objectives has technical utility in itself.

2: Bath system 10: Heat source unit 12: Heat source machine 20: Supply water channel 22: First return water channel 23: Second return water channel 24: First outgoing water channel 26: Hot water filling valve 28: Heat source side switching valve 30: Circulation pump 32 : Water flow switch 50 : Fine bubble generation unit 52 : Tank 52a : Low water level electrode 52b : High water level electrode 60 : Third return waterway 62 : Fourth return waterway 64 : Spout waterway 66 : Communication waterway 68 : Second outflow waterway 70 : Third outflow waterway 74: Water supply waterway 80: First switching valve 82: Second switching valve 84: Check valve 86: Water supply control valve 88: Pressure pump 100: Air introduction channel 102: Air control valve 130: Bathtub 130a : Wall part 132 : Circulation connector 132a : Front surface 132b : Bottom surface 134a : First discharge port 134b : First suction port 134c : Second suction port 134d : Second discharge port 136 : Upper water channel 136a : First discharge path 136b : First suction path 138: Lower water channel 138a: Second discharge path 138b: Second suction path 140a to 140d: Check portion 142: Fine bubble discharge nozzle 150: Control device 152: Memory 154: Remote control 200: Water supply source

Claims (3)

bathtub and
a circulation path for circulating water in the bathtub;
a circulation pump provided in the circulation path;
a tank provided in the circulation path and dissolving gas in water;
a pressurizing pump provided upstream of the tank in the circulation path;
a gas introduction part connected to the tank and capable of introducing gas into the tank;
a fine bubble discharge nozzle attached to the bathtub;
a water supply channel, one end of which is connected to a water supply source and the other end of which is connected to the circulation path;
a water supply valve that is provided in the water supply channel and opens and closes the water supply channel;
comprising a control device;
The control device includes:
a water supply operation in which the circulation pump and the pressure pump are driven to spray water from the tank into the bathtub through the fine bubble discharge nozzle while the water supply valve is in a closed state;
a gas introduction operation of introducing gas into the tank from the gas introduction part when the water supply valve is in the closed state and the pressurizing pump is stopped;
It is configured to be able to perform fine bubble supply operation,
When receiving a first start instruction instructing to start the fine bubble supply operation, the fine bubble supply operation is started, and when an operation end condition is satisfied, the fine bubble supply operation is terminated. Ori,
The operation termination condition is that the number of executions of the water supply operation and the gas introduction operation reaches a predetermined number of times, or that a predetermined time has elapsed since the start of the fine bubble supply operation,
If an interruption instruction to interrupt the fine bubble supply operation is received after the start of the fine bubble supply operation but before the operation termination condition is satisfied, the water supply valve is opened, and the water supply valve is opened. A bath device configured to perform a tank cleaning operation in which a pressure pump is driven, water supplied from the water supply source is supplied to the tank , and water in the tank is discharged into the bathtub . On the wall of the bathtub,
A first discharge port connected to the circulation path, and the amount of water discharged from the first discharge port is such that the amount of water in the vertical component with respect to the wall on which the first discharge port is installed is equal to the amount of water discharged from the first discharge port. The first discharge port is larger than the amount of parallel component water relative to the wall portion where the first discharge port is installed;
A second discharge port connected to the circulation path, and the amount of water discharged from the second discharge port is such that the amount of water in a parallel component with respect to the wall portion on which the second discharge port is installed is equal to the amount of water discharged from the second discharge port. the second discharge port is provided, the amount of water being greater than the amount of water in the vertical component relative to the wall portion in which the second discharge port is installed;
In the water supply operation, water discharged from the tank into the bathtub passes through the first discharge port and is discharged into the bathtub,
The bath apparatus according to claim 1, wherein in the tank cleaning operation, water discharged from the tank into the bathtub passes through the second discharge port and is discharged into the bathtub. The bath device further includes:
A heating device provided in the circulation path and heating water in the circulation path,
The control device includes:
When the water supply valve is in the closed state and the pressurizing pump is stopped, the circulation pump and the heating device can be driven to perform a reheating operation that heats the water in the bathtub. It is composed of
It is configured to start the reheating operation when receiving a second start instruction instructing to start the reheating operation,
The interruption instruction includes the second start instruction received after starting the fine bubble supply operation and before the operation end condition is satisfied,
The control device includes:
If the interruption instruction based on the second start instruction is received after the fine bubble supply operation is started and before the operation end condition is satisfied, the reheating operation is executed before the tank cleaning operation. The bath device according to claim 1 or 2, wherein the bath device is configured to execute the tank cleaning operation after the reheating operation is finished.

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