JP2022029812A - Bath system - Google Patents

Abstract

To provide a technique capable of improving the comfort of a bather when an operation of feeding fine bubbles is underway.SOLUTION: There is provided a bath system comprising: a first water circulation channel circulating water present in a bathtub; a water supply channel with its one end connected to a water supply source and the other end connected to the first water circulation channel; a heater disposed on the water supply channel; a tank disposed on the first water circulation channel; a fine-bubble injection nozzle disposed on the first water circulation channel; and a controller. The controller is structured capable of carrying out a hot water supply operation, when the bathtub is not in a state of being filled with water, of supplying the bathtub with hot water heated by the heater to a set temperature suitable for filling the bathtub in an amount sufficient to fill the bathtub therewith, via the water supply channel, the first water circulation channel and the tank, and capable of carrying out a fine bubble supply operation of supplying the tank disposed on the first water circulation channel with water present in the bathtub to generate pressurized water with gas dissolved therein to inject it into the bathtub via the fine-bubble injection nozzle.SELECTED DRAWING: Figure 3

Description

The techniques disclosed herein relate to bath systems.

Patent Document 1 describes a circulating water channel for circulating water in a bathtub, a water injection channel having one end connected to a water supply source and the other end connected to a circulating water channel, and a heating device provided on the water injection channel. A bath system including a tank provided on a circulating water channel, a fine bubble discharge nozzle provided on the circulating water channel, and a control device is disclosed. The control device supplies the water in the bathtub to the tank provided on the circulating water channel, dissolves the gas in the tank in the supplied water to generate gas-dissolving pressurized water, and uses the generated gas-dissolving pressurized water. It is configured to be able to execute the fine bubble supply operation of discharging into the bathtub via the fine bubble discharge nozzle.

Japanese Unexamined Patent Publication No. 2008-164233

In the bath system of Patent Document 1, in a state where water is not accumulated in the bathtub, the amount of hot water supplied from the water supply source and heated to the set temperature of the hot water by the heating device is not passed through the bathtub. The hot water supply operation is performed. In this case, hot water is not stored in the tank during the hot water beam operation. Therefore, the temperature of the water in the tank may be lower than the temperature of the water in the bathtub at the time when the fine bubble supply operation is started. When the fine bubble supply operation is executed in such a situation, the water having a relatively low temperature stored in the tank immediately after the start of the fine bubble supply operation (hereinafter, referred to as "low temperature water"). Is discharged into the bathtub. If this cold water hits the bather directly, it may cause discomfort to the bather.

The present invention provides a technique capable of improving the comfort of a bather when the fine bubble supply operation is performed.

The bath system disclosed herein includes a first circulating water channel that circulates water in the bathtub and a water injection channel that has one end connected to a water supply source and the other end connected to the first circulating water channel. A heating device provided on the water injection channel, a tank provided on the first circulation water channel, a fine bubble discharge nozzle provided on the first circulation water channel, and a control device. The control device is supplied with water from the water supply source and heated to a set temperature of the hot water by the heating device in a state where water is not accumulated in the bathtub. The hot water beam operation to supply the bathtub via the circulation water channel and the tank, and the water in the bathtub are supplied to the tank provided on the first circulation water channel, and in the tank, Fine bubble supply operation in which the gas in the tank is dissolved in the supplied water to generate gas-dissolving pressurized water, and the generated gas-dissolving pressurized water is discharged into the bathtub via the fine bubble discharge nozzle. And is configured to be executable.

According to the above configuration, in the hot water beam operation, the water heated to the hot water beam set temperature by the heating device is supplied to the bathtub via the first circulation water channel and the tank. Therefore, when the hot water beam operation is completed, the water heated to the hot water beam set temperature is stored in the first circulating water channel and the tank. In this case, it is possible to increase the possibility that the temperature of the water in the first circulation channel and the temperature of the water in the tank are relatively high at the time when the fine bubble supply operation is subsequently executed. can. Therefore, even if the water supplied to the bathtub directly hits the bather immediately after the start of the operation of supplying fine bubbles, it is possible to suppress the discomfort to the bather and improve the comfort of the bather. Can be done.

The bath system is further a first discharge port installed on the wall of the bathtub, and the amount of water discharged from the first discharge port is water having a component perpendicular to the wall on which the first discharge port is installed. The amount of water is larger than the amount of water having a component parallel to the wall where the first discharge port is installed, the first discharge port and the second discharge port installed on the wall part of the bathtub, and the second discharge port. As for the amount of water discharged from the outlet, the amount of water having a parallel component to the wall where the second discharge port is installed is larger than the amount of water having a component perpendicular to the wall where the second discharge port is installed. A second discharge port, a suction port for sucking water in the bathtub, and a second circulation water channel connecting the suction port and the second discharge port may be provided. The first circulation water channel may connect the suction port and the first discharge port. A part of the first circulation waterway and a part of the second circulation waterway may be shared. In the fine bubble supply operation, the control device sucks the water in the bathtub from the suction port and discharges the water that has passed through the first circulation water channel, the tank, and the fine bubble discharge nozzle into the bathtub from the first discharge port. It may be configured in. The control device may be further configured to be capable of performing a drainage operation of sucking water in the bathtub from the suction port and draining the water in the second circulation water channel from the second discharge port to the bathtub. When the operation execution instruction, which is an instruction for executing the fine bubble supply operation, is acquired before the determination time elapses after the hot water beam operation is completed, the control device does not execute the drainage operation. If the operation execution instruction is acquired after the bubble supply operation is executed and the determination time has elapsed from the end of the hot water filling operation, the fine bubble supply operation may be executed after the drainage operation is executed.

If a long time has passed after the hot water beam operation is executed, the temperature of the water in the first circulating water channel may become lower than the temperature of the water in the bathtub. In such a situation, when the fine bubble supply operation is executed, the low temperature water in the first circulation water channel is discharged into the bathtub from the first discharge port, and the low temperature water can directly hit the bather. According to the above configuration, the control device executes the fine bubble supply operation after executing the drainage operation when the operation execution instruction is acquired after the determination time has elapsed from the execution of the hot water beam operation. In the drainage operation, a large amount of low-temperature water is drained in a direction parallel to the wall where the second discharge port is installed, so that it is difficult for the low-temperature water to hit the bather directly. Then, in the drainage operation, the low temperature water in the second circulating water channel is replaced with the bathtub water, so that the water in the water channel shared by the first circulating water channel and the second circulating water channel is replaced with the bathtub water. Therefore, it is possible to prevent the low temperature water from being discharged into the bathtub via the first discharge port immediately after the start of the fine bubble supply operation. Further, if the operation execution instruction is acquired before the determination time elapses after the hot water beam operation is executed, the control device executes the fine bubble supply operation without executing the drainage operation. When the determination time has not elapsed since the hot water beam operation was executed, the temperature of the water in the first circulation channel is maintained at a relatively high temperature. Therefore, even if the fine bubble supply operation is executed without the drainage operation being executed and the water in the first circulation water channel directly hits the bather, the bather is not uncomfortable. In this case, as compared with the case where the drainage operation is executed, the time from the acquisition of the operation execution instruction to the start of the fine bubble supply operation can be shortened. Therefore, the comfort of the bather can be improved.

It is a figure which shows the structure of the bath system which concerns on this Example (water supply state). It is a figure which shows the structure of the bath system which concerns on this Example (air introduction state). It is a figure which shows the structure of the bath system which concerns on this Example (hot water state). It is a figure which shows the structure of the bath system which concerns on this Example (additional bath state). It is a figure which shows the structure of the bath system which concerns on this Example (reheating state, drainage state). It is a figure which shows typically the flow of water in a circulation connector in a water supply state and an air introduction state. It is a figure which shows typically the flow of water in a circulation connector in a hot water state, a hot water state, a reheating state, and a drainage state. It is a flowchart of the fine bubble supply operation process which concerns on this Example.

(Example)
(Configuration of bath system 2)
The bath system 2 will be described with reference to FIGS. 1 to 8. The bath system 2 includes a heat source unit 10, a fine bubble generation unit 50, a bathtub 130, and a control device 150. The heat source unit 10 is connected to a water supply source 200, a hot water outlet 250, and a fine bubble generation unit 50. The fine bubble generation unit 50 is connected to the heat source unit 10 and the bathtub 130. In the following, a case where water flows in the direction of the arrow shown in FIG. 1 will be described as an example.

(Structure of heat source unit 10)
The heat source unit 10 is a unit for heating the water supplied from the water supply source 200 and supplying the heated water to the bathtub 130. The heat source unit 10 includes a first heat source machine 202, a second heat source machine 12, a water supply channel 204, a hot water supply channel 206, a pouring channel 20, a first return channel 22, a second return channel 23, and a second. (1) A water channel 24 is provided.

The upstream end of the water supply channel 204 is connected to a water supply source 200 such as a city water supply, and the downstream end of the water supply channel 204 is connected to the first heat source machine 202. The upstream end of the hot water passage 206 is connected to the first heat source machine 202, and the downstream end of the hot water passage 206 is connected to the hot water discharge point 250 (curan or the like). The first heat source machine 202 is a gas heat source machine that heats water passing through the first heat source machine 202. The first heat source machine 202 heats the water flowing from the water supply channel 204 and sends the heated water to the hot water supply channel 206.

The upstream end of the pouring channel 20 is connected to the hot water channel 206, and the downstream end of the hot water channel 206 is connected to the connection portion between the first return channel 22 and the second return channel 23. The pouring passage 20 is provided with a pouring valve 26. The pouring valve 26 opens and closes the pouring passage 20.

One end of the first return water channel 22 is connected to the fine bubble generation unit 50 (specifically, the third return water channel 60), and the other end of the first return water channel 22 is the second return water channel 23 and the pouring channel 20. It is connected to the. The upstream end of the second return water channel 23 is connected to the first return water channel 22 and the pouring channel 20, and the downstream end of the second return water channel 23 is connected to the second heat source machine 12. The second return water channel 23 is provided with a circulation pump 30 and a water flow switch 32. The circulation pump 30 is provided on the upstream side of the water flow switch 32, and sends out the water in the second return water channel 23 to the downstream side. The water flow switch 32 detects that water is passing through the second return water channel 23. The second heat source machine 12 is a gas heat source machine that heats water passing through the second heat source machine 12.

The upstream end of the first going water channel 24 is connected to the second heat source machine 12, and the downstream end of the first going water channel 24 is connected to the fine bubble generation unit 50 (specifically, the second going water channel 68). There is.

(Structure of fine bubble generation unit 50)
The fine bubble generation unit 50 includes a tank 52, a third return channel 60, a communication channel 66, a fourth return channel 62, a jet channel 64, a second outlet channel 68, a third outlet channel 70, and water. A supply water channel 74 and an air introduction channel 100 are provided.

The tank 52 can store water inside. Inside the tank 52, a low water level electrode 52a and a high water level electrode 52b for detecting the water level of the water stored 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, an ON signal is output to the control device 150. The tank 52 is used to generate air-dissolving pressurized water in which air is dissolved in water.

One end of the third return channel 60 is connected to the communication channel 66, and the other end of the third return channel 60 is connected to the heat source unit 10 (specifically, the first return channel 22). The communication channel 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 of the fourth return water channel 62 is connected to the bathtub 130 (specifically, the circulation connector 132). The upstream end of the ejection channel 64 is connected to the lower part of the tank 52, and the downstream end of the ejection channel 64 is connected to the first switching valve 80. The ejection water channel 64 is provided with a check valve 84 for preventing the flow of water from the first switching valve 80 side to the tank 52 side. The first switching valve 80 has a first connection state (states of FIGS. 1 and 3) connecting the ejection channel 64 and the fourth return channel 62, and a second connecting state connecting the ejection channel 64 and the communication channel 66. It is possible to switch between the connection state (state of FIG. 2) and the third connection state (state of FIGS. 4 and 5) connecting the fourth return channel 62, the ejection channel 64, and the communication channel 66. ..

The upstream end of the second going waterway 68 is connected to the heat source unit 10 (specifically, the first going waterway 24), and the downstream end of the second going waterway 68 is connected to the second switching valve 82. One end of the third going water channel 70 is connected to the bathtub 130 (specifically, the circulation connector 132), and the other end of the third going water channel 70 is connected to the second switching valve 82. The second switching valve 82 has a fourth connection state (states of FIGS. 1, 3, and 4) connecting the third outflow channel 70 and the communication channel 66, and the second outbound channel 68 and the third outbound channel 70. It is possible to switch between the fifth connection state (the state of FIGS. 2 and 5) in which the connection is made.

The second outbound water channel 68 and the tank 52 are connected by a water supply water channel 74. The water supply water channel 74 is provided with a water supply control valve 86 and a pressurizing pump 88. The water supply control valve 86 is provided on the upstream side of the pressurizing pump 88. The pressurizing pump 88 sends out the water in the water supply channel 74 to the downstream side.

When the first switching valve 80 is in the first connection state, the second switching valve 82 is in the fourth connection state, the pouring valve 26 is in the closed state, and the water supply control valve 86 is in the open state. When the circulation pump 30 is driven, water flows as shown in FIG. Specifically, water is supplied from the bathtub 130 to the second heat source machine 12 via the third outbound waterway 70, the communication waterway 66, the third return waterway 60, the first return waterway 22, and the second return waterway 23. Will reach. Then, the water that has passed through the second heat source machine 12 reaches the tank 52 via the first going water channel 24, the second going water channel 68, and the water supply water channel 74. Then, the water that has passed through the tank 52 reaches the bathtub 130 via the ejection water channel 64 and the fourth return water channel 62. In the following, the state of the bath system 2 in FIG. 1 may be referred to as a “water supply state”. Further, in the following, the waterways 70, 66, 60, 22, 23, 24, 68, 74, 64, 62 in which water flows in the state of FIG. 1 may be collectively referred to as "first circulation waterway". be.

Further, the first switching valve 80 is in the second connection state, the second switching valve 82 is in the fifth connection state, the pouring valve 26 is in the closed state, and the water supply control valve 86 is in the closed state, which will be described later. When the circulation pump 30 is driven while the air control valve 102 is in the open state, water flows as shown in FIG. Specifically, water reaches the second heat source machine 12 from the tank 52 via the ejection channel 64, the communication channel 66, the third return channel 60, the first return channel 22, and the second return channel 23. do. Then, the water that has passed through the second heat source machine 12 reaches the bathtub 130 via the first outbound waterway 24, the second outbound waterway 68, and the third outbound waterway 70. In the following, the state of the bath system 2 in FIG. 2 may be referred to as an “air introduction state”.

Further, the first switching valve 80 is in the first connection state, the second switching valve 82 is in the fourth connection state, the pouring valve 26 is in the open state, and the water supply control valve 86 is in the open state. Then, water flows as shown in FIG. Specifically, water reaches the pouring channel 20 from the water supply source 200 via the water supply channel 204, the first heat source machine 202, and the hot water supply channel 206. Then, the water that has reached the pouring channel 20 branches into a flow toward the first return channel 22 and a flow toward the second return channel 23. The water flowing through the first return channel 22 reaches the bathtub 130 via the third return channel 60, the communication channel 66, and the third outgoing channel 70. Further, the water flowing in the second return channel 23 passes through the second heat source machine 12, the first outlet channel 24, the second outlet channel 68, the water supply channel 74, the tank 52, the ejection channel 64, and the fourth return channel 62. Via, it reaches the tub 130. In the following, the state of the bath system 2 in FIG. 3 may be referred to as a “hot water state”. Further, in the following, the first return channel 22, the third return channel 60, the communication channel 66, and the third outbound channel 70 in the state of FIG. 3 may be collectively referred to as "first pouring channel". be. Further, in the following, the second return channel 23, the first outgoing channel 24, the second outgoing channel 68, the water supply channel 74, the ejection channel 64, and the fourth return channel 62 in the state of FIG. 3 are collectively referred to as “ It may be described as "second pouring waterway".

Further, the first switching valve 80 is in the third connection state, the second switching valve 82 is in the fourth connection state, the pouring valve 26 is in the open state, and the water supply control valve 86 is in the closed state. Then, water flows as shown in FIG. Specifically, water reaches the pouring channel 20 from the water supply source 200 via the water supply channel 204, the first heat source machine 202, and the hot water supply channel 206. Then, the water that has reached the pouring channel 20 reaches the communication channel 66 via the first return channel 22 and the third return channel 60. The water that reaches the communication channel 66 branches into a flow toward the fourth return channel 62 and a flow toward the third outgoing channel 70. The water flowing through the fourth return channel 62 reaches the bathtub 130 via the fourth return channel 62. Further, the water flowing through the third going waterway 70 reaches the bathtub 130 via the third going waterway 70. In the following, the state of the bath system 2 in FIG. 4 may be described as “additional hot water state”. Further, in the following, the first return channel 22, the third return channel 60, the communication channel 66, the fourth return channel 62, and the third outgoing channel 70 in the state of FIG. 4 are collectively referred to as “connecting channel”. I have something to do.

Further, the first switching valve 80 is in the third connection state, the second switching valve 82 is in the fifth connection state, the pouring valve 26 is in the closed state, and the water supply control valve 86 is in the closed state. When the circulation pump 30 is driven, water flows as shown in FIG. Specifically, water is supplied from the bathtub 130 to the second heat source machine 12 via the fourth return channel 62, the communication channel 66, the third return channel 60, the first return channel 22, and the second return channel 23. Will reach. Then, the water that has passed through the second heat source machine 12 reaches the bathtub 130 via the first outbound waterway 24, the second outbound waterway 68, and the third outbound waterway 70. In the following, the state of the bath system 2 in FIG. 5 may be referred to as a “reheating state” or a “drainage state”. In the following, the waterways 62, 66, 60, 22, 23, 24, 68, and 70 in which water flows in the state of FIG. 5 may be collectively referred to as “second circulation waterway”.

The upstream end side of the air introduction path 100 is open to the atmosphere, and the downstream end of the air introduction path 100 is connected to the tank 52. The air introduction path 100 introduces air into the tank 52. The air introduction path 100 is provided with an air control valve 102 and a check valve (not shown). When the air control valve 102 is driven and the circulation pump 30 is driven, air is introduced into the tank 52.

(Configuration of control device 150)
The control device 150 controls the operation of each component of the heat source unit 10 and the fine bubble generation unit 50. The control device 150 is configured to be able to communicate with a remote controller (not shown) that can be operated by the user. The control device 150 includes a memory 152. The memory 152 stores each information (for example, the end time of the hot water operation and the hot water operation) used in the operation process (see FIG. 7) described later. The control device 150 can execute hot water filling operation, adding hot water operation, reheating operation, drainage operation, fine bubble supply operation, and the like according to the operation of the remote controller by the user. In addition, the user can set the set temperature of the hot water, the amount of hot water, the set temperature of the footbath, the amount of the hot water to be added, the set temperature of the reheating, and the like by operating the remote controller.

(Structure of Circulation Connector 132; FIGS. 6 and 7)
Subsequently, with reference to FIGS. 6 and 7, the circulation connector 132 connected to the wall portion 130a of the bathtub 130 will be described. 6 and 7 are views schematically showing a cross section of the circulation connector 132. The arrows in FIGS. 6 and 7 indicate the flow of water. FIG. 6A shows the flow of water when the bath system 2 is in the water supply state (that is, the state of FIG. 1), and FIG. 6B shows the bath system 2 in the air introduction state (that is, FIG. 2). The flow of water in the case of (state) is shown. Further, FIG. 7A shows the flow of water when the bath system 2 is in a hot water state (that is, the state of FIG. 3) and a hot water state (that is, the state of FIG. 4), and is shown in FIG. 7 (b). ) Indicates the flow of water when the bath system 2 is in the reheating state and the draining state (that is, the state of FIG. 5). In the following, the vertical direction of FIGS. 6 and 7 is referred to as a vertical direction, and the horizontal direction of FIGS. 6 and 7 is referred to as a front-back direction.

As shown in FIGS. 6 and 7, the circulation connector 132 includes an upper water channel 136 and a lower water channel 138. The upper channel 136 communicates with the fourth return channel 62, and the lower channel 138 communicates with the third outgoing channel 70. The upper water channel 136 is branched into a first discharge channel 136a and a first suction channel 136b. The first discharge path 136a communicates with the first discharge port 134a provided on the front surface 132a of the circulation connector 132. The water discharged from the first discharge port 134a is discharged in front of the wall portion 130a of the bathtub 130, that is, in the direction perpendicular to the wall portion 130a. Most of the water discharged from the first discharge port 134a is discharged in the direction perpendicular to the wall portion 130a, but some of the water is discharged in the direction inclined to the wall portion 130a and the wall portion 130a. (See FIGS. 6 (a) and 7 (a)). That is, in the amount of water discharged from the first discharge port 134a, the amount of water having a vertical component with respect to the wall portion 130a is larger than the amount of water having a parallel component with respect to the wall portion 130a. In the modified example, if the amount of water having a vertical component with respect to the wall portion 130a is larger than the amount of water having a parallel component with respect to the wall portion 130a among the amount of water discharged from the first discharge port 134a, the wall portion 130a The amount of water discharged in the direction inclined with respect to the direction perpendicular to the wall portion 130a may be larger than the amount of water discharged in the direction perpendicular to the wall portion 130a. The first discharge path 136a is provided with a check valve 140a for preventing the flow of water from the front side to the rear side, and a fine bubble discharge nozzle 142. The check valve 140a is provided in front of the fine bubble ejection nozzle 142. The fine bubble discharge nozzle 142 decompresses the water passing through the fine bubble discharge nozzle 142. The first suction path 136b communicates with the 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 for preventing the flow of water from the rear side to the front side.

The lower water channel 138 is branched into a second discharge channel 138a and a second suction channel 138b. The second suction path 138b communicates with the 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 for preventing the flow of water from the rear side to the front side. The second discharge path 138a communicates with the 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. Most of the water discharged from the second discharge port 134d is discharged in the direction parallel to the wall portion 130a, but some of the water is discharged in the direction inclined to the wall portion 130a and the wall portion 130a. (See FIGS. 6 (b), 7 (a), 7 (b)). That is, in the amount of water discharged from the second discharge port 134d, the amount of water having a parallel component with respect to the wall portion 130a is larger than the amount of water having a component perpendicular to the wall portion 130a. In the modified example, if the amount of water having a parallel component with respect to the wall portion 130a is larger than the amount of water having a component perpendicular to the wall portion 130a among the amount of water discharged from the second discharge port 134d, the wall portion 130a The amount of water discharged in the direction inclined with respect to the direction parallel to the wall portion 130a may be larger than the amount of water discharged in the direction parallel to the wall portion 130a. The second discharge path 138a is provided with a non-stop portion 140d for preventing the flow of water from the lower side to the upper side. The second discharge port 134d may be provided on a side surface (for example, a left side surface, a right side surface, etc.) other than the front surface 132a of the circulation connector 132. Generally speaking, the second discharge port 134d may be provided so that a large amount of water discharged from the second discharge port 134d is discharged in a direction parallel to the wall portion 130a.

(Operation of bath system 2)
Subsequently, the operation of the bath system 2 will be described. In the following, the hot water filling operation, the adding hot water operation, the reheating operation, the drainage operation, and the fine bubble supply operation performed by the bath system 2 will be described in order. At the time when the hot water filling operation, the adding hot water operation, the reheating operation, the drainage operation, and the fine bubble supply operation are started, the first switching valve 80 and the second switching valve 82 are in the third connected state, respectively. This is the fifth connection state (see FIG. 5). Further, the driving of the circulation pump 30 and the pressurizing pump 88 is stopped, and the pouring valve 26, the water supply control valve 86, and the air control valve 102 are in the closed state.

(Hot water operation)
The hot water beam operation is an operation in which the water supplied from the water supply source 200 is heated to the hot water beam set temperature and the amount of hot water (for example, 200 liters) is supplied to the bathtub 130. In general, the hot water beam operation is an operation performed before bathing, that is, a state in which water is not accumulated in the bathtub 130. When the user executes an operation for instructing the execution of the hot water beam operation on the remote controller, the hot water beam operation is started. When the hot water beam operation is started, the control device 150 switches the hot water injection valve 26 and the water supply control valve 86 from the closed state to the open state, and switches the first switching valve 80 from the third connection state to the first connection state. The second switching valve 82 is switched from the fifth connection state to the fourth connection state, and heating by the first heat source machine 202 is started. As a result, as shown in FIG. 3, the water heated to the set temperature of the hot water by the first heat source machine 202 flows from the hot water supply passage 206 into the hot water filling passage 20. Of the water flowing into the pouring channel 20, the water flowing to the first return channel 22 side passes through the first pouring channel (water channels 22, 60, 66, 70) and the circulation connector 132, and the bathtub 130. To reach. Further, among the water flowing into the pouring channel 20, the water flowing to the second return channel 23 side includes the second pouring channel (water channel 23, 24, 68, 74, 64, 62) and the circulation connector 132. Via, the bathtub 130 is reached. When the integrated flow rate of the water supplied to the bathtub 130 reaches the amount of hot water, the control device 150 ends the hot water operation. The control device 150 switches the hot water injection valve 26 and the water supply control valve 86 from the open state to the closed state, switches the first switching valve 80 from the first connection state to the third connection state, and connects the second switching valve 82 to the fourth connection state. The state is switched to the fifth connection state, and the drive of the first heat source machine 202 is stopped. Further, the control device 150 stores the end time of the hot water beam operation in the memory 152. As described above, in the hot water beam operation, the water heated by the first heat source machine 202 is supplied to the tank 52, but since there is no air in the tank 52, the air-melting pressurized water is not generated.

(Additional hot water operation)
The footbath operation is an operation in which the water supplied from the water supply source 200 is heated to the set temperature of the footbath and the amount of water of the footbath (for example, 20 liters) is supplied to the bathtub 130. In general, the footbath operation is an operation performed in a state where water is accumulated in the bathtub 130, that is, during bathing. When the user executes an operation for instructing the execution of the footbath operation on the remote controller, the footbath operation is started. When the hot water operation is started, the control device 150 switches the pouring valve 26 from the closed state to the open state, maintains the first switching valve 80 in the third connected state, and connects the second switching valve 82 to the fifth connection. The state is switched from the state to the fourth connection state, and heating by the first heat source machine 202 is started. As a result, as shown in FIG. 4, the water heated by the first heat source machine 202 flows from the hot water outlet 206 into the hot water pouring passage 20. The water flowing into the pouring channel 20 reaches the bathtub 130 via the connecting channel (water channel 22, 60, 66, 62, 70) and the circulation connector 132. The control device 150 ends the addition hot water operation when the integrated flow rate of the water supplied to the bathtub 130 reaches the addition hot water amount. The amount of added hot water is smaller than the amount of hot water. The control device 150 switches the pouring valve 26 from the open state to the closed state, maintains the first switching valve 80 in the third connection state, and switches the second switching valve 82 from the fourth connection state to the fifth connection state. The drive of the first heat source machine 202 is stopped.

(Reheating operation)
In the reheating operation, when the first switching valve 80 is in the third connection state and the second switching valve 82 is in the fifth connection state (state in FIG. 5), the bathtub water is used as the second heat source machine 12. It is an operation to heat by. When the user executes an operation on the remote controller to instruct the execution of the reheating operation, the reheating operation is started. The control device 150 drives the circulation pump 30 and the second heat source machine 12. As a result, as shown in FIG. 5, the bath water circulates in the second circulating water channel (water channel 62, 66, 60, 22, 23, 24, 68, 70). Specifically, the bathtub water passes through the circulation connector 132, the fourth return channel 62, the communication channel 66, the third return channel 60, the first return channel 22, and the second return channel 23, and is second. It is supplied to the heat source machine 12. Then, the water heated by the second heat source machine 12 is supplied to the bathtub 130 via the first going water channel 24, the second going water channel 68, the third going water channel 70, and the circulation connector 132. The control device 150 stops the driving of the second heat source machine 12 and the circulation pump 30 when the temperature in the bathtub 130 reaches the reheating set temperature or the reheating operation time elapses. As a result, the reheating operation is completed.

(Fine bubble supply operation processing; Fig. 8)
Subsequently, with reference to FIG. 8, the fine bubble supply operation process executed by the control device 150 of the bath system 2 will be described. The control device 150 executes a drainage operation and a fine bubble supply operation, which are preparatory operations, in the fine bubble supply operation process. The fine bubble supply operation includes an air introduction operation (S30 to S34) and a water supply operation (S40 to S44), which will be described later. When the user executes an operation for executing the execution of the fine bubble supply operation on the remote controller, the control device 150 acquires an operation execution instruction from the remote controller and starts the process of FIG.

In S10, the control device 150 determines whether or not the standby time, which is the time from the end time of the hot water beam operation to the current time, is longer than the first predetermined time. When the standby time is longer than the first predetermined time, the control device 150 determines YES in S10, and the process proceeds to S12. On the other hand, when the standby time is equal to or less than the first predetermined time, the control device 150 determines NO in S10, and the process proceeds to S30.

In S20, the control device 150 drives the circulation pump 30 and starts the drainage operation. As a result, as shown in FIG. 5, the bath water circulates in the second circulating water channel (water channel 62, 66, 60, 22, 23, 24, 68, 70). Specifically, the bathtub water is the circulation connector 132, the fourth return channel 62, the communication channel 66, the third return channel 60, the first return channel 22, the second return channel 23, the second heat source machine 12, the first. It is supplied to the bathtub 130 via the going water channel 24, the second going water channel 68, the third going water channel 70, and the circulation connector 132. As a result, the high-temperature water in the bathtub 130 flows into the second circulating water channel, and the low-temperature water in the second circulating water channel is drained to the bathtub 130 from the second discharge port 134d of the lower surface 132b of the circulation connector 132. .. In the modified example, the control device 150 may drive the circulation pump 30 and the second heat source machine 12 in S20.

In S22, the control device 150 monitors that the drainage operation time, which is the time from the start of the drainage operation, elapses from the second predetermined time. When the drainage operation time becomes longer than the second predetermined time, the control device 150 determines YES in S22, and the process proceeds to S24.

In S24, the control device 150 stops the drive of the circulation pump 30 and ends the drainage operation. When S24 ends, the process proceeds to S30.

In S30, the control device 150 starts the air introduction operation. The control device 150 switches the air control valve 102 from the closed state to the open state, switches the first switching valve 80 from the third connection state to the second connection state, and maintains the second switching valve 82 in the fifth connection state. Keep the water supply control valve 86 closed. As a result, the bath system 2 is in the air introduction state (see FIG. 2). The control device 150 then drives the circulation pump 30. As a result, as shown in FIG. 2, 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 the ejection channel 64, the communication channel 66, the third return channel 60, the first return channel 22, the second return channel 23, the second heat source machine 12, the first outbound channel 24, and the second. It is discharged to the bathtub 130 via the going water channel 68, the third going water channel 70, and the circulation connector 132.

In S32, 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 S32, and the process proceeds to S34.

In S34, the control device 150 switches the air control valve 102 to the closed state and ends the air introduction operation.

In S40, the control device 150 starts the water supply operation. The control device 150 switches the first switching valve 80 from the second connection state to the first connection state, switches the second switching valve 82 from the fifth connection state to the fourth connection state, and switches the water supply control valve 86 to the open state. .. As a result, the bath system 2 is in the water supply state (see FIG. 1). The control device 150 then drives the pressurizing pump 88. As a result, as shown in FIG. 1, the bath water circulates in the first circulating water channel (water channel 70, 66, 60, 22, 23, 24, 68, 74, 64, 62). Specifically, the bath water is the circulation connector 132, the third outbound waterway 70, the communication waterway 66, the third return waterway 60, the first return waterway 22, the second return waterway 23, the second heat source machine 12, the first. It is supplied to the tank 52 via the going water channel 24, the second going water channel 68, and the water supply water channel 74. At this time, the water pressurized by the pressurizing pump 88 is supplied from the water supply channel 74 to the tank 52. Inside the tank 52, air is pressurized and dissolved in water to generate air-dissolved pressurized water. Then, the air-dissolved pressurized water is supplied from the tank 52 to the bathtub 130 via the ejection water channel 64, the fourth return water channel 62, and the circulation connector 132. The air-dissolved pressurized water is depressurized to below atmospheric pressure when passing through the fine bubble discharge nozzle 142 in the circulation connector 132, and is increased to atmospheric pressure when ejected to the bathtub 130. As a result, fine bubbles are generated in the water of the bathtub 130.

In S42, 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 becomes equal to or higher than the upper limit water level, the control device 150 determines YES in S42, and the process proceeds to S44.

In S44, the control device 150 switches the water supply control valve 86 to the closed state, stops the circulation pump 30 and the pressurizing pump 88, and ends the water supply operation.

In S50, the control device 150 increases the number of cycles by 1. The number of cycles is the number of executions of the air introduction operation and the water supply operation.

In S52, the control device 150 determines whether or not the current number of cycles has reached a predetermined number of times (for example, 5 times). When the number of cycles reaches a predetermined number, the control device 150 determines YES in S52 and ends the process of FIG. On the other hand, when the number of cycles has not reached the predetermined number of cycles, the control device 150 determines NO in S52, and the process returns to S30. The control device 150 switches the second switching valve 82 from the fourth connection state to the fifth connection state in S30 after passing through S52.

As described above, in the hot water beam operation, the water heated to the hot water beam set temperature by the first heat source machine 202 is supplied to the bathtub 130 via the first circulation water channel and the tank 52. Therefore, when the hot water beam operation is completed, the water heated to the hot water beam set temperature is stored in the first circulating water channel and the tank 52. In this case, it is possible to increase the possibility that the temperature of the water in the first circulation channel and the temperature of the water in the tank 52 are relatively high at the time when the fine bubble supply operation is subsequently executed. Can be done. Therefore, even if the water supplied to the bathtub 130 directly hits the bather immediately after the start of the operation of supplying fine bubbles, it is possible to suppress the discomfort to the bather and improve the comfort of the bather. be able to.

Further, the hot water beam operation is an operation executed before taking a bath, that is, a state in which water is not accumulated in the bathtub 130. Therefore, at the time when the hot water beam operation is started, the low temperature water stays in the first circulation channel and the tank 52, and when the hot water beam operation is executed, the first circulation water channel and the tank 52 Even if the low-temperature water staying in the bathtub is discharged from the first discharge port 134a to the bathtub 130, the low-temperature water does not directly hit the bather. On the other hand, the addition hot water operation is an operation that is executed after the hot water boiling operation, and is an operation that is likely to be executed during the bathing. If a long time has passed after the hot water beam operation is executed, the temperature of the water in the first circulating water channel may become lower than the temperature of the water in the bathtub 130. Therefore, in the case of the configuration in which the water heated by the first heat source machine 202 is supplied to the bathtub 130 via the tank 52 in the hot water operation, the water stays in the first circulation water channel and the tank 52. The low-temperature water is discharged from the first discharge port 134a to the bathtub 130, and the low-temperature water can directly hit the bather. According to the above configuration, when the control device 150 executes the hot water beam operation, the water heated by the first heat source machine 202 is supplied to the bathtub 130 via the tank 52 (see FIG. 3). However, when the footbath operation is executed, the water heated by the first heat source machine 202 is supplied to the bathtub 130 without passing through the tank 52 (see FIG. 4). Therefore, the cold water can directly hit the bather and replace the water in the first circulation channel with the hot water without causing discomfort to the bather.

Further, when the fine bubble supply operation is executed in a situation where the temperature of the water in the first circulating water channel is lower than the temperature of the water in the bathtub 130, it is relatively relatively in the first circulating water channel. The low temperature water is discharged from the first discharge port 134a into the bathtub 130, and the low temperature water can directly hit the bather. According to the above configuration, the control device 150 executes the drainage operation when the operation execution instruction is acquired after the first predetermined time has elapsed from the end of the hot water beam operation (YES in S10 of FIG. 8). After that (S20 to S24), the fine bubble supply operation is executed (S30 to S44). In the drainage operation, since a large amount of low-temperature water is drained in a direction parallel to the wall portion 130a where the second discharge port 134d is installed, it is difficult for the low-temperature water to hit the bather directly. Then, in the drainage operation, the low temperature water in the second circulating water channel is replaced with the bathtub water, so that the water in the water channel shared by the first circulating water channel and the second circulating water channel is replaced with the bathtub water. Therefore, it is possible to prevent the low temperature water from being discharged into the bathtub 130 via the first discharge port 134a immediately after the start of the fine bubble supply operation. Further, when the operation execution instruction is acquired (S10NO) before the first predetermined time elapses after the hot water beam operation is executed, the control device 150 performs the fine bubble supply operation without executing the drainage operation. Execute. When the first predetermined time has not elapsed since the hot water beam operation is completed, the temperature of the water in the first circulating water channel is maintained at a relatively high temperature. Therefore, even if the fine bubble supply operation is executed without the drainage operation being executed and the water in the first circulation water channel directly hits the bather, the bather is not uncomfortable. In this case, as compared with the case where the drainage operation is executed, the time from the reception of the operation execution instruction to the start of the fine bubble supply operation can be shortened. Therefore, the comfort of the bather can be improved.

(Correspondence)
The first heat source machine 202 is an example of a “heating device”. Air is an example of a "gas". The water supply channel 204, the hot water supply channel 206, and the water injection channel 20 are examples of the “water injection channel”. The third outbound canal 70, the communication canal 66, the third return canal 60, the first return canal 22, the second return canal 23, the first outbound canal 24, the second outbound canal 68, and the fourth return canal 62 are " This is an example of "a waterway shared by the first circulation waterway and the second circulation waterway". The first predetermined time is an example of the "determination time".

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

(First Modified Example) In the above embodiment, high-temperature water is supplied to the bathtub 130 via the first pouring water channel and the second pouring water channel in the hot water beam operation. In the modified example, when the hot water beam operation and the footbath operation are executed, the hot water is supplied to the bathtub 130 via the first pouring water channel and the second pouring water channel. It may be configured. Further, in another modification, the bathtub 130 is configured to be supplied with high-temperature water via the first pouring water channel and the second pouring water channel only when the footbath operation is executed. It may have been done.

(Second modification) The bath system 2 may include a water level sensor that detects the water level in the bathtub 130. In this modification, the control device 150 determines that the amount of water supplied to the bathtub 130 has reached the amount of hot water when the water level in the bathtub 130 reaches a predetermined water level in the hot water operation, and performs the hot water operation. You may finish.

(Third modification example) S10 in FIG. 8 can be omitted. That is, the control device 150 may always execute the drainage operation when acquiring the operation execution instruction from the remote controller.

(Fourth Modification Example) The bath system 2 may include a temperature detecting unit for detecting the temperature of water in the first circulating water channel or the temperature of water in the tank 52. In this modification, the control device 150 executes the processes of S20 to S24 when the temperature detected by the temperature detection unit is equal to or lower than the predetermined temperature in S10 of FIG.

(Fifth Modification Example) In the fine bubble supply operation process of FIG. 8, the control device 150 switches the first switching valve 80 from the third connection state to the second connection state after S24, and sets the second switching valve 82 to the second connection state. 5 The connection state may be switched to the fourth connection state, the water supply control valve 86 may be switched from the closed state to the open state, and the circulation pump 30 may be driven. In this case, water flows through the ejection channel 64, the communication channel 66, the third return channel 60, the first return channel 22, the second return channel 23, the first outgoing channel 24, the second outgoing channel 68, and the water supply channel 74. Circulate. As a result, the low-temperature water staying in the water supply channel 74, the tank 52, and the ejection channel 64 is mixed with the water in the second circulation channel replaced with the bath water in the drainage operation, and the water supply channel 74. , The temperature of the water in the tank 52 and the ejection channel 64 rises. Then, when the third predetermined time elapses from the driving of the circulation pump 30, the control device 150 stops the driving of the circulation pump 30 and switches the water supply control valve 86 from the open state to the closed state. According to such a configuration, it is possible to further suppress the low temperature water from being discharged into the bathtub 130 via the first discharge port 134a immediately after the start of the fine bubble supply operation.

(Sixth Modified Example) In the above embodiment, air is introduced into the tank 52. In the modified example, 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 arranged at the upstream end of the air introduction path 100.

The technical elements described herein or in the drawings exhibit their technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the techniques exemplified in the present specification or the drawings can achieve a plurality of purposes at the same time, and achieving one of the purposes itself has technical usefulness.

2: Bath system 10: Heat source unit 12: Second heat source machine 20: Water pouring channel 22: First return water channel 23: Second return water channel 24: First outbound water channel 26: Pouring 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 water channel 62: Fourth return water channel 64: Pumping water channel 66: Communication channel 68: Second outbound channel 70: Third outbound channel Water channel 74: Water supply water channel 80: First switching valve 82: Second switching valve 84: Check valve 86: Water supply control valve 88: Pressurizing pump 100: Air introduction path 102: Air control valve 130: Bathtub 130a: Wall 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 port Passage 138: Lower water passage 138a: Second discharge passage 138b: Second suction passage 140a to 140d: Non-stop portion 142: Fine bubble discharge nozzle 150: Control device 152: Memory 200: Water supply source 202: First heat source machine 204: Water supply Road 206: Hot water flow path 250: Hot water outlet

Claims (2)

It ’s a bath system,
The first circulation channel that circulates the water in the bathtub,
One end is connected to the water supply source, and the other end is connected to the first circulation channel.
The heating device provided on the water injection channel and
The tank provided on the first circulation water channel and
The fine bubble discharge nozzle provided on the first circulation water channel and
Equipped with a control device,
The control device is
In a state where water is not accumulated in the bathtub, the water of the amount of hot water supplied from the water supply source and heated to the set temperature of the hot water by the heating device is used in the water injection channel, the first circulation water channel, and the above. Hot water supply operation to supply to the bathtub via the tank,
The water in the bathtub is supplied to the tank provided on the first circulation water channel, and the water is supplied to the tank.
In the tank, gas is dissolved in water to generate gas-dissolving pressurized water.
A fine bubble supply operation for discharging the generated gas-dissolving pressurized water into the bathtub via the fine bubble discharge nozzle, and
A bath system that is configured to be viable. The bath system further
The first discharge port installed on the wall of the bathtub, and the amount of water discharged from the first discharge port is the amount of water having a component perpendicular to the wall on which the first discharge port is installed. , The first discharge port, which is larger than the amount of water having a parallel component to the wall portion where the first discharge port is installed.
The second discharge port installed on the wall of the bathtub, and the amount of water discharged from the second discharge port is the amount of water having a parallel component to the wall on which the second discharge port is installed. , The amount of water of the component perpendicular to the wall where the second discharge port is installed, the second discharge port and
It is provided with a suction port for sucking water in the bathtub, a second circulation water channel connecting the suction port and the second discharge port, and the like.
The first circulation water channel connects the suction port and the first discharge port.
A part of the first circulation waterway and a part of the second circulation waterway are shared.
In the fine bubble supply operation, the control device sucks water in the bathtub from the suction port, and causes the first discharge of water that has passed through the first circulation water channel, the tank, and the fine bubble discharge nozzle. It is configured to discharge from the outlet into the bathtub.
The control device further
It is configured to be able to execute a drainage operation in which water in the bathtub is sucked from the suction port and water in the second circulation water channel is drained from the second discharge port to the bathtub.
The control device is
If the operation execution instruction, which is an instruction for executing the fine bubble supply operation, is acquired before the determination time elapses after the hot water beam operation is completed, the fine bubble operation is not executed without executing the fine bubble operation. Perform bubble supply operation,
The first aspect of the present invention, wherein when the operation execution instruction is acquired after the determination time has elapsed from the end of the hot water beam operation, the fine bubble supply operation is executed after the drainage operation is executed. Bath system.

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