JP7213135B2 - bath system - Google Patents

Description

The technology disclosed in this specification relates to a bath system.

Patent Document 1 discloses a bathtub, a pump, a first discharge port, a second discharge port, a suction port for sucking water in the bathtub, and a first discharge port for causing the water flowing in from the suction port to flow out from the first discharge port. Disclosed is a bath system comprising: 1 circulating water channel, a 2nd circulating water channel for causing water flowing in from a suction port to flow out from a 2nd outlet, a fine bubble discharge nozzle provided on the 1st circulating water channel, and a control device. ing. A part of the first circulation channel and a part of the second circulation channel are shared. The pump is provided in a water channel shared by the first water circulation channel and the second water circulation channel. The control device drives the pump, introduces the water in the bathtub from the suction port into the first circulation water channel, and the water that has passed through the gas-liquid mixing device and the fine bubble discharge nozzle is discharged from the first discharge port into the bathtub. It is configured to be able to execute fine bubble supply operation to be discharged to.

JP 2008-164233 A

After a long period of time after the water is discharged into the bathtub from the first or second outlet, the temperature of the water in each circulating water channel may become lower than the temperature of the water in the bathtub. be. In such a situation, immediately after the microbubble supply operation is started, the relatively low-temperature water remaining in the first circulation water channel before the microbubble supply operation is started flows into the bathtub from the first outlet. Dispensed. If this relatively low-temperature water hits the bather directly, it may make the bather feel uncomfortable.

The present invention provides a technology capable of improving the bather's comfort when the microbubble supply operation is performed.

A bath system according to one embodiment disclosed in this specification includes a bathtub, a heating device, a pump, a first outlet for discharging water in which gas is dissolved into the bathtub, and water heated by the heating device. into the bathtub, a suction port for sucking water in the bathtub, a gas-liquid mixing device for dissolving gas in the water, and water flowing in from the suction port flowing out from the first discharge port. a first circulating water channel that allows the water flowing in from the suction port to flow out from the second discharging port; and a third circulating water channel that circulates water between the gas-liquid mixing device and the pump. , a fine bubble discharge nozzle provided on the first circulating water channel, and a control device, a part of the first circulating water channel and a part of the second circulating water channel are shared, and the heating device and The pump is provided in a water channel shared by the first water circulation channel, the second water circulation channel, and the third water circulation channel, and the gas-liquid mixing device includes the first water circulation channel and the third water circulation channel. provided in a water channel shared by a circulation water channel, the control device drives the pump, introduces water in the bathtub from the suction port into the first circulation water channel, and controls the gas-liquid mixing device; Then, a microbubble supply operation for discharging water that has passed through the microbubble discharge nozzle into the bathtub from the first discharge port, and an operation execution instruction that is an instruction for executing the microbubble supply operation are acquired. a first circulation 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 before executing the fine bubble supply operation, and a second circulation operation for circulating water in the third circulation channel before executing the fine bubble supply operation when the operation execution instruction is acquired.

According to the above configuration, before executing the microbubble supply operation, the control device supplies relatively low-temperature water (hereinafter referred to as "low-temperature water") in the second circulation water channel from the second discharge port. A first circulation operation is performed to drain water into the bathtub. The second ejection port is an ejection port for ejecting heated water into the bathtub. If the heated water hits the bather directly, the bather feels uncomfortable. For this reason, the second outlet is generally designed so that the water discharged from the second outlet does not hit the bather directly. Therefore, in the first circulation operation, even if the low-temperature water is discharged from the second outlet into the bathtub, the low-temperature water does not directly hit the bather. Then, in the first circulation operation, the low-temperature water in the second circulation water passage is replaced with relatively high-temperature water in the bathtub (hereinafter referred to as "bathtub water"). Therefore, the water in the channel shared by the first and second circulation channels is replaced with bath water. Therefore, it is possible to prevent the low-temperature water from being discharged into the bathtub through the first discharge port immediately after the microbubble supply operation is started. Also, the control device executes a second circulation operation for circulating water in the third circulation water channel before executing the fine bubble supply operation. Thereby, the water remaining in the third circulation water channel is mixed. In this case, if relatively high-temperature water remains in the third circulation water channel other than the water channel shared with the first circulation water channel, it is shared between the first and third circulation water channels. The temperature of the cold water in the waterway can be increased. Therefore, by executing the first circulation operation and the second circulation operation, the temperature of the water shared by the first and second circulation channels and the temperature of the water in the third circulation channel are increased. Become. Therefore, it is possible to further prevent the low-temperature water from being discharged into the bathtub through the first discharge port immediately after the microbubble supply operation is started. As a result, it is possible to improve the comfort of the user who uses the bath system.

Another embodiment of the bath system disclosed by this specification includes a bathtub, a pump, and a first outlet installed in a wall of the bathtub, wherein the water discharged from the first outlet is The amount of the first outlet is such that the amount of water in the vertical component with respect to the wall on which the first outlet is installed is greater than the amount of water in the parallel component with respect to the wall on which the first outlet is installed. and a second outlet installed in the wall of the bathtub, wherein the amount of water ejected from the second outlet is equal to the water component parallel to the wall on which the second outlet is installed. The amount of water is greater than the amount of water in the vertical component with respect to the wall on which the second outlet is installed; a liquid mixing device, a first water circulation channel for causing water flowing in from the suction port to flow out from the first discharge port, a second water circulation channel for causing water flowing in from the suction port to flow out from the second discharge port, and a third circulation channel for circulating water between the gas-liquid mixing device and the pump; a fine bubble discharge nozzle provided on the first circulation channel; A part of the second circulation water channel is shared with the part, and the pump is provided in the water channel shared by the first circulation water channel, the second circulation water channel, and the third circulation water channel, The gas-liquid mixing device is provided in a water channel shared by the first water circulation channel and the third water circulation channel, and the control device drives the pump to supply water in the bathtub from the suction port. is introduced into the first circulating water channel, and the water that has passed through the gas-liquid mixing device and the fine bubble ejection nozzle is discharged into the bathtub from the first outlet, and the fine bubbles When an operation execution instruction, which is an instruction for executing the supply operation, is acquired, before executing the fine bubble supply operation, the water in the bathtub is sucked from the suction port, and the water in the second circulation water channel is A first circulation operation for draining water from the second outlet, and a second circulation operation for circulating water in the third circulation channel before executing the fine bubble supply operation when the operation execution instruction is acquired. 2 circulating operation.

According to the above configuration, the control device executes the first circulation operation in which the low-temperature water is drained from the second outlet before executing the fine bubble supply operation. In the first circulation operation, much of the low-temperature water is discharged in a direction parallel to the wall on which the second outlet is installed, so the low-temperature water does not directly hit the bather. Then, in the first circulation operation, the low-temperature water in the second circulation water passage is replaced with bath water. Therefore, the water in the channel shared by the first and second circulation channels is replaced with bath water. Therefore, it is possible to prevent the low-temperature water from being discharged into the bathtub through the first discharge port immediately after the microbubble supply operation is started. Also, the control device executes a second circulation operation for circulating water in the third circulation water channel before executing the fine bubble supply operation. Thereby, the water remaining in the third circulation water channel is mixed. In this case, if relatively high-temperature water remains in the third circulation water channel other than the water channel shared with the first circulation water channel, it is shared between the first and third circulation water channels. The temperature of the cold water in the waterway can be increased. Therefore, by executing the first circulation operation and the second circulation operation, the temperature of the water shared by the first and second circulation channels and the temperature of the water in the third circulation channel are increased. Become. Therefore, it is possible to further prevent the low-temperature water from being discharged into the bathtub through the first discharge port immediately after the microbubble supply operation is started. Therefore, it is possible to improve the comfort of the user who uses the bath system.

The control device may execute the first circulation operation when the operation execution instruction is acquired, and execute the second circulation operation after the first circulation operation is completed.

According to the above configuration, water in the second circulation channel is replaced with bathtub water in the first circulation operation. That is, in the first circulation operation, the water in the third circulation channel shared with the second circulation channel is replaced with the bathtub water. For this reason, in the second circulation operation, the low-temperature water remaining in the water channel that is not shared with the second circulation water channel among the third circulation water channels, and the water that is shared with the second circulation water channel among the third circulation water channels is mixed with the bathtub water remaining in the water channel. As a result, the temperature of the low-temperature water in the third circulation water passage increases. Therefore, by executing the second circulation operation after the end of the first circulation operation, the low-temperature water is more likely to be discharged into the bathtub through the first discharge port immediately after the start of the fine bubble supply operation. can be suppressed.

The bath system further includes a heating device provided in a water channel shared by the first, second, and third circulation water channels, and the control device, when an operation execution instruction is acquired, , the second circulation operation may be performed, the heating device may be driven in the second circulation operation, and the first circulation operation may be performed after the second circulation operation is completed.

According to the above configuration, the heating device is driven in the second circulation operation. As a result, the temperature of the low-temperature water remaining in the water channel shared by the first and third circulation water channels rises. Further, in the first circulation operation that is executed after the second circulation operation is completed, the water in the water channel shared by the first and second circulation water channels is replaced with bath water. Therefore, by executing the first circulation operation after the end of the second circulation operation, the low-temperature water is more likely to be discharged into the bathtub through the first discharge port immediately after the start of the fine bubble supply operation. can be suppressed.

1 is a diagram showing the configuration of a bath system according to first and second embodiments (first circulation state); FIG. FIG. 4 is a diagram showing the configuration of the bath system according to the first and second embodiments (second circulation state); FIG. 10 is a diagram showing the configuration of the bath system according to the first and second embodiments (third circulation state); It is a figure which shows typically the circulation connector based on a 1st, 2nd Example. 4 is a flow chart of circulation operation processing according to the first embodiment. 9 is a flow chart of circulation operation processing according to the second embodiment.

(First embodiment)
(Configuration of bath system 2)
The bath system 2 will be described with reference to FIGS. 1 and 2. FIG. 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 the water supply source 200 and the fine bubble generation unit 50 . The microbubble generating 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 for heating water supplied from the water supply source 200 and supplying the heated water to the bathtub 130 . The heat source unit 10 includes a heat source machine 12 , a water supply channel 20 , a first return water channel 22 and a first going water channel 24 .

The upstream end of the water supply channel 20 is connected to a water supply source 200 such as city water supply, and the downstream end of the water supply channel 20 is connected to the first return water channel 22 . A hot water filling valve 26 is provided in the water supply path 20 . The hot water filling valve 26 is a valve that controls the flow of water from the water supply channel 20 to the first return water channel 22 .

The upstream end of the first return water channel 22 is connected to the microbubble generation unit 50 (specifically, the second return water channel 60), and the downstream end is connected to the heat source machine 12. In the first return water channel 22, a temperature sensor 28 for detecting a circulating water channel water temperature CT, which is the temperature of the water in the first return water channel 22, is provided upstream of the connecting portion of the first return water channel 22 and the water supply channel 20. It is A first pump 30 and a water flow switch 32 are provided in the first return water channel 22 between the connecting portion of the first return water channel 22 and the water supply channel 20 and the heat source device 12 . The first pump 30 is provided upstream of the water flow switch 32, and pumps the water in the first return water channel 22 downstream. A water flow switch 32 detects that water is passing through the first return water line 22 . The heat source device 12 is a gas heat source device that heats water passing through the heat source device 12 .

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

(Configuration of microbubble generation unit 50)
The microbubble generation unit 50 includes a tank 52 , a second return water channel 60 , a second outbound water channel 68 , a water supply channel 74 , a communication water channel 66 , a jet water channel 64 and an air introduction channel 100 .

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 first water level detected by the low water level electrode 52a is lower than the second water level detected by the high water level electrode 52b. The water level electrodes 52 a and 52 b output an ON signal to the controller 150 when they come into contact with the surface of the water stored in the tank 52 . Tank 52 is utilized to produce air-dissolved pressurized water in which air is dissolved in the water.

The upstream end of the second return water channel 60 is connected to the communication water channel 66 , and the downstream end is connected to the heat source unit 10 via the first return water channel 22 . The communication channel 66 connects the first switching valve 80 and the second switching valve 82 . One end of the third 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 portion of the tank 52 , and the downstream end is connected to the first switching valve 80 . The jet water passage 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. As described above, the communication water channel 66 , the third return water channel 62 and the jet water channel 64 are connected to the first switching valve 80 . The first switching valve 80 connects the first connection state (state shown in FIG. 1) in which the jet water channel 64 and the third return water channel 62 are connected, and the third return water channel 62, the jet water channel 64, and the communication water channel 66. and the second connection state (states shown in FIGS. 2 and 3).

The upstream end of the second going water channel 68 is connected to the heat source unit 10 via the first going water channel 24 , and the downstream end 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 is connected to the second switching valve 82 . That is, the second switching valve 82 is connected to the communication water channel 66 , the second going water channel 68 , and the third going water channel 70 . The second switching valve 82 is in a third connection state (the state shown in FIGS. 1 and 3) connecting the third going water channel 70 and the communication water channel 66, and in a fourth state connecting the second going water channel 68 and the third going water channel 70. The connected state (the state in FIG. 2) can be switched.

The second going water channel 68 and the tank 52 are connected by a water supply channel 74 . A water supply control valve 86 and a second pump 88 are provided in the water supply channel 74 . The water supply control valve 86 is provided upstream of the second pump 88 . The second pump 88 pumps the water in the water supply channel 74 downstream. Hereinafter, the state of the bath system 2 (the state in FIG. 1) when the first switching valve 80 is in the first connection state and the second switching valve 82 is in the third connection state will be referred to as the "first circulation state. , and the state of the bath system 2 when the first switching valve 80 is in the second connection state and the second switching valve 82 is in the fourth connection state (the state in FIG. 2) is referred to as the "second circulation The state of the bath system 2 when the first switching valve 80 is in the second connection state and the second switching valve 82 is in the third connection state (the state in FIG. 3) is referred to as the "third state". called cyclical state.

When the first pump 30 is driven while the bath system 2 is in the first circulation state (the state shown in FIG. 1), the hot water filling valve 26 is closed, and the water supply control valve 86 is open, , the water flows as shown in FIG. Specifically, water reaches the heat source machine 12 through the third outgoing water channel 70 , the communication water channel 66 , the second return water channel 60 , and the first return water channel 22 . The water that has passed through the heat source machine 12 reaches the tank 52 through the first going water channel 24 , the second going water channel 68 , and the water supply water channel 74 . After passing through the tank 52 , the water reaches the bathtub 130 through the jet water channel 64 and the third return water channel 62 . Hereinafter, the water channels 70, 66, 60, 22, 24, 68, 74, 64, 62 through which water flows in the state of FIG. 1 are collectively referred to as "first circulation water channel". The first pump 30 is driven while the bath system 2 is in the second circulation state (the state shown in FIG. 2), the hot water filling valve 26 is closed, and the water supply control valve 86 is closed. Then, water flows as shown in FIG. Specifically, water reaches the heat source machine 12 through the third return water channel 62 , the communication water channel 66 , the second return water channel 60 , and the first return water channel 22 . The water that has passed through the heat source machine 12 reaches the bathtub 130 through the first going water channel 24 , the second going water channel 68 , and the third going water channel 70 . Below, each water channel 62, 66, 60, 22, 24, 68, 70 through which water flows in the state of FIG. 2 is generically called a "second circulation water channel". The first pump 30 is driven while the bath system 2 is in the third circulation state (the state shown in FIG. 3), the hot water filling valve 26 is closed, and the water supply control valve 86 is open. Then, water flows as shown in FIG. Specifically, the water reaches the heat source machine 12 through the jet water channel 64 , the communication water channel 66 , the second return water channel 60 , and the first return water channel 22 . Since the first pump 30 is driven, the water passing through the first switching valve 80 does not flow to the third return water channel 62 side. The water that has passed through the heat source machine 12 reaches the tank 52 through the first going water channel 24 , the second going water channel 68 , and the water supply water channel 74 . The water channels 64, 66, 60, 22, 24, 68, 74 through which water flows in the state of FIG. 3 are collectively referred to as "third circulation water channel". As shown in FIGS. 1 and 2, water channels 70, 66, 60, 22, 24, 68, and 62 are shared by the first and second circulation channels.

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 . The air introduction path 100 is provided with an air pump 102 and a check valve 104 . Air is introduced into the tank 52 when the air pump 102 is driven.

(Configuration of control device 150)
The control device 150 controls the operation of each component of the heat source unit 10 and the microbubble generating unit 50 . The control device 150 is configured to communicate with a remote controller (not shown) that can be operated by a user. Controller 150 includes memory 152 . The memory 152 stores various pieces of information used in the circulation operation process (see FIG. 5), which will be described later. The control device 150 can perform a reheating operation, a circulation operation, a microbubble supply operation, and the like, according to the user's operation on the remote controller.

(Configuration of circulation connector 132)
Next, the circulation connector 132 connected to the wall portion 130a of the bathtub 130 will be described with reference to FIGS. 4(a) and 4(b). The circulation connector 132 is a connector used to realize both reheating of the water in the bathtub 130 and generation of fine air bubbles in the bathtub 130 . 4A and 4B are diagrams schematically showing cross sections of the circulation connector 132. FIG. Arrows in FIGS. 4A and 4B indicate the flow of water. FIG. 4(a) shows the flow of water when the first switching valve 80 is in the first connection state and the second switching valve 82 is in the third connection state (that is, the state of FIG. 1), FIG. 4(b) shows the flow of water when the first switching valve 80 is in the second connected state and the second switching valve 82 is in the fourth connected state (that is, the state of FIG. 2). In addition, below, the up-down direction of FIG. 4 is called the up-down direction, and the left-right direction of FIG. 4 is called the front-back direction.

The circulation fitting 132 comprises an upper waterway 136 and a lower waterway 138 . The upper waterway 136 communicates with the third return waterway 62 and the lower waterway 138 communicates with the third outgoing waterway 70 . The upper water channel 136 branches into a first discharge channel 136a and a first suction channel 136b. The first discharge path 136 a communicates with a first discharge port 134 a provided on the front surface 132 a 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 a direction perpendicular to the wall portion 130a. Most of the water discharged from the first discharge port 134a is discharged in a direction perpendicular to the wall portion 130a, but a part of the water is discharged in a direction in which the wall portion 130a is inclined and also (see FIG. 4A). That is, in the amount of water ejected from the first ejection port 134a, the amount of water component perpendicular to the wall portion 130a is greater than the amount of water component parallel to the wall portion 130a. In the modified example, if the amount of water ejected from the first ejection port 134a has a component perpendicular to the wall portion 130a larger than that of a component parallel to the wall portion 130a, the wall portion 130a The amount of water ejected in the direction that is inclined with respect to the direction perpendicular to the wall portion 130a may be greater than the amount of water ejected in the direction perpendicular to the wall portion 130a. The first discharge passage 136a is provided with a non-return portion 140a that prevents water from flowing from the front side to the rear side, and a fine bubble discharge nozzle 142. As shown in FIG. The non-return portion 140 a is provided in front of the fine bubble discharge nozzle 142 . The fine bubble ejection nozzle 142 decompresses the water passing through the fine bubble ejection nozzle 142 . The first suction path 136 b communicates with a first suction port 134 b provided on the front surface 132 a of the circulation connector 132 . The first suction passage 136b is provided with a non-return portion 140b that prevents water from flowing from the rear side to the front side.

The lower water channel 138 branches into a second discharge channel 138a and a second suction channel 138b. The second suction path 138 b communicates with a second suction port 134 c provided on the front surface 132 a of the circulation connector 132 . The second suction passage 138b is provided with a non-return portion 140c that prevents water from flowing from the rear side to the front side. The second discharge path 138 a communicates with a second discharge port 134 d provided on the lower surface 132 b 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 a direction parallel to the wall portion 130a, but a part of the water is discharged in a direction parallel to the wall portion 130a and in a (see FIG. 4(b)). That is, in the amount of water ejected from the second ejection port 134d, the amount of water component parallel to the wall portion 130a is larger than the amount of water component perpendicular to the wall portion 130a. Note that, in the modified example, if the amount of water discharged from the second outlet 134d has a component parallel to the wall portion 130a larger than a component perpendicular to the wall portion 130a, the wall portion 130a The amount of water ejected in the direction that is inclined with respect to the direction parallel to the wall portion 130a may be greater than the amount of water ejected in the direction parallel to the wall portion 130a. The second discharge passage 138a is provided with a non-return portion 140d that prevents the flow of water from the lower side to the upper side. In addition, 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 outlet 134d should be provided so that most of the water discharged from the second outlet 134d is discharged in a direction parallel to the wall portion 130a.

(Operation of bath system 2)
Next, operation of the bath system 2 will be described. Below, the reheating operation, the circulation operation, and the fine bubble supply operation performed by the bath system 2 will be described in order. At the time when the reheating operation and the circulation operation are started, the first switching valve 80 and the second switching valve 82 are in the second connection state and the fourth connection state, respectively (see FIG. 2). Further, the driving of the first pump 30 and the second pump 88 is stopped, and the hot water filling valve 26 and the water supply control valve 86 are closed. At the time when the microbubble supply operation is started, the first switching valve 80 and the second switching valve 82 are in the second connection state and the third connection state, respectively (see FIG. 3). Further, the driving of the first pump 30 and the second pump 88 is stopped, and the hot water filling valve 26 and the water supply control valve 86 are closed.

(Reheating operation)
In the reheating operation, the bathtub water is heated by the heat source device 12 when the first switching valve 80 is in the second connection state and the second switching valve 82 is in the fourth connection state (state shown in FIG. 2). It is driving to do. When the user operates the remote controller to instruct execution of the reheating operation, the reheating operation is started. First, the control device 150 drives the first pump 30 and the heat source device 12 . Thereby, as shown in FIG. 2, the bathtub water circulates through the second circulation water passages (water passages 62, 66, 60, 22, 24, 68, 70). Specifically, the bath water flows through the circulation connector 132 (specifically, the first suction port 134b, the first suction passage 136b, and the upper water passage 136), the third return passage 62, the communication passage 66, and the second return passage. It is supplied to the heat source machine 12 through the water channel 60 and the first return water channel 22 . Then, the water heated by the heat source machine 12 is supplied to the first going water channel 24, the second going water channel 68, the third going water channel 70, the circulation connector 132 (more specifically, the lower water channel 138, the second discharge channel 138a, and , second outlet 134d), and supplied to the bathtub 130. As shown in FIG. The control device 150 stops driving the heat source device 12 and the first pump 30 when the temperature in the bathtub 130 reaches the set temperature or when the reheating operation time elapses. This completes the reheating operation.

(Circulation operation)
The circulation operation is an operation for replacing the low-temperature water in each channel with high-temperature water before executing the fine bubble supply operation. The circulation operation is also a preparatory operation before executing the fine bubble supply operation. The circulation operation is composed of a first circulation operation and a second circulation operation. When an operation for instructing execution of the microbubble supply operation is executed by the user on the remote controller, the control device 150 acquires an operation execution instruction, which is an instruction for executing the microbubble supply operation, from the remote controller. 5, the circulation operation process is started. As shown in FIG. 5, the processing executed in steps S10 to S22 constitutes the first circulation operation, and the processing executed in steps S30 to S36 constitutes the second circulation operation.

In step S<b>10 , the control device 150 drives the first pump 30 and the heat source device 12 . As a result, as shown in FIG. 2, water flows through the second circulation channels (channels 62, 66, 60, 22, 24, 68, 70). Specifically, bathtub water is sucked from the first suction port 134b of the circulation connector 132 (see FIG. 4(b)). Then, the water remaining upstream of the heat source device 12 passes through the heat source device 12 before the circulation operation process is started. Further, the water on the downstream side of the heat source device 12 is discharged into the bathtub 130 from the second outlet 134d of the circulation connector 132 (see FIG. 4(b)).

In step S12, the control device 150 starts counting the timer. Then, in step S14, the control device 150 monitors whether the water temperature CT of the circulating water passage becomes equal to or higher than the first predetermined water temperature. When the circulating water channel water temperature CT is equal to or higher than the first predetermined water temperature, the control device 150 determines YES in step S14, and the process proceeds to step S16.

In step S16, control device 150 identifies the current value of the timer as first reference time ST1. Then, in step S18, the control device 150 specifies the drainage operation time DT. The drainage operation time DT is the time required to replace the low-temperature water in the second circulation channel with high-temperature water when the bath system 2 is in the second circulation state (state shown in FIG. 2). The control device 150 uses the first reference time ST1 identified in step S16, the operation coefficient C stored in the memory 152, and the additional operation time AT stored in the memory 152 to determine the drainage operation time DT. Identify. The operation coefficient C replaces the low-temperature water in the second circulation water passage when the bath system 2 is in the second circulation state with relatively high-temperature water (bathtub water or water heated by the heat source device 12). is a coefficient used to specify the time required for The operation coefficient C is set according to the ratio between the length of the channel upstream of the temperature sensor 28 and the length of the channel downstream of the temperature sensor 28 when the bath system 2 is in the second circulation state. be done. The operation coefficient C is set, for example, by a builder who installs the bath system 2 in a house. In this embodiment, the length of the water channel on the upstream side of the heat source unit 10 and the length of the water channel on the downstream side of the heat source unit 10 are relatively longer than the length of the water channel inside the heat source unit 10 . In this embodiment, the length of the water channel on the upstream side of the heat source unit 10 and the length of the water channel on the downstream side of the heat source unit 10 are substantially the same when the bath system 2 is in the second circulation state. That is, it can be said that the length of the water channel on the upstream side of the temperature sensor 28 provided in the heat source unit 10 and the length of the water channel on the downstream side of the temperature sensor 28 are substantially the same. Therefore, when the water channel upstream of the temperature sensor 28 is replaced with bathtub water, the water channel downstream of the temperature sensor 28 is replaced with water heated by the heat source device 12 . Therefore, in this embodiment, the operating coefficient C is set to "1". The control device 150 calculates the second reference time ST2 by multiplying the operation coefficient C by the first reference time ST1. The additional operating time AT is time added to the second reference time ST2. In this embodiment, "10 [seconds]" is set as the additional operation time AT. The control device 150 specifies the drainage operation time DT by adding the additional operation time AT to the second reference time ST2. For example, when the first reference time ST1, the operating coefficient C, and the additional operating time AT are respectively "30 [seconds]", "1", and "10 [seconds]", the control device 150 sets "40 [seconds] ]” is specified as the drainage operation time DT.

In step S20, the control device 150 monitors whether the timer has passed the drainage operation time DT specified in step S18. When the timer has elapsed the drainage operation time DT, the control device 150 determines YES in step S20, and the process proceeds to step S22.

In step S<b>22 , the control device 150 stops driving the first pump 30 and the heat source device 12 . This completes the first circulation operation. At this point, the water in the third return water channel 62, the communication water channel 66, the second return water channel 60, and the first return water channel 22 is replaced with the bathtub water, and the first outbound water channel 24, second outbound water channel 68, and , the water in the third going water channel 70 is replaced with the water heated by the heat source machine 12 . That is, the low-temperature water in the second circulation water passage is replaced with relatively high-temperature water.

In step S30, the control device 150 switches the second switching valve 82 from the fourth connection state to the third connection state, and switches the water supply control valve 86 from the closed state to the open state. As a result, the state of the bath system 2 is switched from the second circulation state to the third circulation state (see FIG. 3).

In step S<b>32 , the control device 150 drives the first pump 30 . As a result, as shown in FIG. 3, water circulates through the third circulation channels (channels 64, 66, 60, 22, 24, 68, 74). In the first circulation operation (steps S10 to S22), It is replaced by water with a relatively high temperature. By driving the first pump 30, the low-temperature water in the third circulation water channel and the relatively high-temperature water are mixed. Therefore, the temperature of the low-temperature water remaining in the water supply channel 74 and the jet water channel 64 increases.

In step S34, the control device 150 monitors whether the first predetermined time (for example, "5 [seconds]") has elapsed since the first pump 30 was driven. The first predetermined time is set to the time required for mixing the water in the third circulation water passage. If the first predetermined period of time has elapsed after driving the first pump 30, the control device 150 determines YES in step S34, and the process proceeds to step S36.

In step S36, the control device 150 stops driving the first pump 30 and switches the water supply control valve 86 from the open state to the closed state. When step S36 ends, the process of FIG. 5 ends. As a result, the temperature of the water in the third circulation water passage also becomes relatively high.

(Fine bubble supply operation)
The fine bubble supply operation is an operation in which air-dissolved pressurized water is generated in the tank 52 and the generated air-dissolved pressurized water is supplied to the bathtub 130 while the bath system 2 is in the first circulation state (state shown in FIG. 1). be. The fine bubble supply operation consists of an air introduction operation and a water supply operation.

When the circulation operation process of FIG. 5 ends, the control device 150 starts the microbubble supply operation. Therefore, when the microbubble supply operation is started, the first switching valve 80, the second switching valve 82, and the water supply control valve 86 are in the second connected state, the third connected state, and the closed state, respectively. When the microbubble supply operation is started, the control device 150 switches the first switching valve 80 from the second connection state to the first connection state (state shown in FIG. 1), and switches the water supply control valve 86 from the closed state to the open state. switch. In addition, the control device 150 keeps the water supply control valve 86 open until the user instructs the remote controller to stop the supply of fine bubbles.

(Air introduction operation)
The air introduction operation is an operation that is started when the water level in the tank 52 is equal to or higher than the first water level at which the high water level electrode 52b is ON. In the air introduction operation, the control device 150 stops driving the first pump 30 and the second pump 88 and drives the air pump 102 . As a result, air is introduced into the tank 52, water in the tank 52 flows out, and the water level in the tank 52 decreases. After determining that the water level in the tank 52 is equal to or higher than the first water level, the controller 150 determines that the water level in the tank 52 is less than the second water level where the low water level electrode 52a is OFF. Execute the air introduction operation until Note that the air-dissolved pressurized water is not generated in the air introduction operation.

(Water supply operation)
The water supply operation is an operation started when the water level in the tank 52 is lower than the second water level at which the low water level electrode 52a is OFF. In the water supply operation, the controller 150 stops driving the air pump 102 while driving the first pump 30 and the second pump 88 . In the water supply operation, the water in the bathtub 130 flows through the circulation connector 132 (specifically, the second suction port 134c, the second suction passage 138b, and the lower water passage 138), the third outgoing water passage 70, the communication water passage 66, the third It is supplied to the tank 52 through the second return water channel 60, the first return water channel 22, the first going water channel 24, the second going water channel 68, and the water supply channel 74 (see FIGS. 1 and 4(a)). . Then, in the tank 52, air-dissolved pressurized water is produced. Then, the generated air-dissolved pressurized water passes through the jet water channel 64, the third return water channel 62, the circulation connector 132 (more specifically, the upper water channel 136, the first discharge channel 136a, and the first discharge port 134a). , is ejected into the bathtub 130 (see FIGS. 1 and 4(a)). The air-dissolved pressurized water is decompressed to atmospheric pressure or less when passing through the fine bubble discharge nozzle 142 of the first discharge passage 136 a of the circulation connector 132 . Then, when the air-dissolved pressurized water is jetted into the bathtub 130 , the pressure of the air-dissolved pressurized water is increased to atmospheric pressure, and fine air bubbles are generated in the bathtub 130 . The control device 150 executes the water supply operation from when the water level in the tank 52 is determined to be less than the second water level to when it is determined that the water level in the tank 52 is equal to or higher than the first water level. do.

The controller 150 repeatedly performs the air introduction operation and the water supply operation according to the water level in the tank 52 .

When the user operates the remote control to instruct the stop of the microbubble supply operation, the control device 150 stops driving the first pump 30 and the second pump 88, and opens the water supply control valve 86 from the open state. It is switched to the closed state, and the driving of the air pump 102 is stopped. Furthermore, the control device 150 switches the first switching valve 80 from the first connection state to the second connection state, and switches the second switching valve 82 from the third connection state to the fourth connection state. This completes the fine bubble supply operation.

As described above, the controller 150 causes the low-temperature water in the second circulation water passages (water passages 62, 66, 60, 22, 24, 68, 70) to flow through the second discharge port 134d before executing the fine bubble supply operation. A first circulation operation (steps S10 to S22 in FIG. 5) is performed to drain water into the bathtub 130 from the bottom. The second discharge port 134d is a discharge port for discharging heated water into the bathtub 130. As shown in FIG. If the heated water hits the bather directly, the bather feels uncomfortable. Therefore, the second outlet 134d is designed so that the water discharged from the second outlet 134d does not directly hit the bather. Therefore, in the first circulation operation, even if the low-temperature water is discharged from the second outlet 134d into the bathtub 130, the low-temperature water does not directly hit the bather. Then, in the first circulation operation, the low-temperature water in the second circulation water passage is replaced with bath water. Therefore, the water in the water channels (water channels 62, 66, 60, 22, 24, 68, 70) shared by the first and second circulation channels is replaced with bath water. Therefore, it is possible to prevent the low-temperature water from being discharged into the bathtub 130 through the first discharge port 134a immediately after the microbubble supply operation is started. In addition, before executing the fine bubble supply operation, the control device 150 performs the second circulation operation (Fig. 5 Steps S30 to S36) are executed. Thereby, the water remaining in the third circulation water channel is mixed. In this case, if relatively high-temperature water remains in the third circulation water channel other than the water channel shared with the first circulation water channel, it is shared between the first and third circulation water channels. The temperature of the cold water in the waterway can be increased. Therefore, by executing the first circulation operation and the second circulation operation, the temperature of the water shared by the first and second circulation channels and the temperature of the water in the third circulation channel are increased. Become. Therefore, it is possible to further prevent the low-temperature water from being discharged into the bathtub 130 through the first discharge port 134a immediately after the microbubble supply operation is started. As a result, the user's comfort using the bath system 2 can be improved.

In addition, before executing the fine bubble supply operation, the control device 150 causes the low-temperature water in the second circulation water passages (water passages 62, 66, 60, 22, 24, 68, 70) to flow from the second outlet 134d to the bathtub 130. A first circulation operation (steps S10 to S22 in FIG. 5) is performed to drain water to the inside. In the first circulation operation, much of the low-temperature water is discharged in the direction parallel to the wall portion 130a on which the second outlet 134d is installed, so the low-temperature water does not directly hit the bather. Then, in the first circulation operation, the low-temperature water in the second circulation water passage is replaced with bath water. Therefore, the water in the water channels (water channels 62, 66, 60, 22, 24, 68, 70) shared by the first and second circulation channels is replaced with bath water. Therefore, it is possible to prevent the low-temperature water from being discharged into the bathtub 130 through the first discharge port 134a immediately after the microbubble supply operation is started. In addition, before executing the fine bubble supply operation, the control device 150 performs the second circulation operation (Fig. 5 Steps S30 to S36) are executed. Thereby, the water remaining in the third circulation water channel is mixed. In this case, if relatively high-temperature water remains in the third circulation water channel other than the water channel shared with the first circulation water channel, it is shared between the first and third circulation water channels. The temperature of the cold water in the waterway can be increased. Therefore, by executing the first circulation operation and the second circulation operation, the temperature of the water shared by the first and second circulation channels and the temperature of the water in the third circulation channel are increased. Become. Therefore, it is possible to further prevent the low-temperature water from being discharged into the bathtub 130 through the first discharge port 134a immediately after the microbubble supply operation is started. As a result, the user's comfort using the bath system 2 can be improved.

In addition, when the operation execution instruction is acquired, the control device 150 executes the first circulation operation (steps S10 to S22 in FIG. 5), and after the first circulation operation is completed, the second circulation operation ( 5) are executed. In the first circulation operation, water in the second circulation channel is replaced with bath water. That is, water in the water channels (channels 66, 60, 22, 24, 68) shared with the second circulation channel among the third circulation channels is replaced with bath water. For this reason, in the second circulation operation, the low-temperature water remaining in the water channel that is not shared with the second circulation water channel among the third circulation water channels, and the water that is shared with the second circulation water channel among the third circulation water channels is mixed with the bathtub water remaining in the water channel. As a result, the temperature of the low-temperature water in the third circulation water passage increases. Therefore, by executing the second circulation operation after the end of the first circulation operation, the low-temperature water is discharged into the bathtub 130 through the first discharge port 134a immediately after the microbubble supply operation is started. can be further suppressed.

(correspondence relationship)
The first suction port 134b and the second suction port 134c are examples of the "suction port". The first pump 30 is an example of a "pump." The tank 52, the air introduction path 100, and the air pump 102 are examples of the "gas-liquid mixing device." The heat source device 12 is an example of a "heating device." The first return waterway 22 and the first going waterway 24 are an example of "a waterway shared by the first circulation waterway, the second circulation waterway, and the third circulation waterway". The water supply channel 74 and the jetting channel 64 are an example of "a channel shared by the first and third circulation channels". The wall part 130a of the bathtub 130 is an example of "the wall part where the first outlet is installed" and "the wall part where the second outlet is installed".

(Second embodiment)
In the second embodiment, the contents of the circulation operation process executed by the control device 150 are different from the circulation operation process of the first embodiment. In this embodiment, the control device 150 executes the second circulation operation when the operation execution instruction is acquired, and then executes the first circulation operation.

The circulating operation process of this embodiment will be described with reference to FIG. In step S130, the control device 150 switches the second switching valve 82 from the fourth connection state to the third connection state, and switches the water supply control valve 86 from the closed state to the open state. Thereby, the state of the bath system 2 is switched from the second circulation state to the third circulation state.

In step S<b>132 , the control device 150 drives the first pump 30 and the heat source device 12 . As a result, water circulates in the third circulation water passages (water passages 64 , 66 , 60 , 22 , 24 , 68 , 74 ) and is heated by the heat source machine 12 . Therefore, the temperature of the low-temperature water in the third circulation water passage increases.

In step S134, the control device 150 monitors whether the second predetermined time (for example, "15 [seconds]") has elapsed since the first pump 30 and the heat source device 12 were driven. The second predetermined time is set to the time required for the heat source device 12 to heat the low-temperature water in the third circulation water passage. When the time from driving the first pump 30 and the heat source device 12 has passed the second predetermined time, the control device 150 determines YES in step S134, and the process proceeds to step S136.

In step S<b>136 , the control device 150 stops driving the first pump 30 and the heat source device 12 . In step S138, the control device 150 switches the second switching valve 82 from the third connection state to the fourth connection state, and switches the water supply control valve 86 from the open state to the closed state. Thereby, the state of the bath system 2 is switched from the third circulation state to the second circulation state.

Next, the control device 150 executes the same processing as the first circulation operation (steps S10 to S22 in FIG. 5) of the first embodiment. Then, when the first circulation operation ends, the process of FIG. 6 ends.

According to the above configuration, the control device 150 executes the second circulation operation (steps S130 to S138 in FIG. 6) when the operation execution instruction is acquired, and after the second circulation operation is completed, the first Circulation operation (steps S10 to S22 in FIG. 5) is performed. In the second circulation operation, the heat source equipment 12 is driven. Therefore, the temperature of the low-temperature water remaining in the third circulation channels (channels 64, 66, 60, 22, 24, 68, 74) increases. In addition, in the first circulation operation that is performed after the second circulation operation is completed, the water passages (water passages 62, 66, 60, 22, 24, 68, 70) shared by the first and second circulation water passages water is replaced with bath water. Therefore, by executing the first circulation operation after the end of the second circulation operation, the low-temperature water is discharged into the bathtub through the first discharge port 134a immediately after the microbubble supply operation is started. can be suppressed more.

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

(First Modification) In the above embodiment, one circulation connector 132 has a first discharge port 134a, a second discharge port 134d, a first suction port 134b, and a second suction port 134c. Alternatively, the bath system 2 may comprise multiple circulation fittings. For example, the first circulation connector may have a first discharge port and a first suction port, and the second circulation connector may have a second discharge port and a second suction port. In another modification, the first circulation connector may have a first suction port and a second suction port, and the second circulation connector may have a first discharge port and a second discharge port. . Further, when the bath system 2 is provided with the first circulation connector and the second circulation connector, the first circulation connector and the second circulation connector are provided on different walls of the bathtub 130. may For example, the first circulation connector may be provided on the wall 130a of the bathtub 130, and the second circulation connector may be provided on the wall facing the wall 130a. That is, the "wall on which the first outlet is installed" and the "wall on which the second outlet is installed" may be different walls.

(Second Modification) In step S10 of the circulation operation process in FIG. In this modification, the operating coefficient C stored in the memory 152 may be set to the time required to replace much of the low-temperature water in the second circulation water passage with bath water. For example, when the length of the water channel upstream of the temperature sensor 28 and the length of the water channel downstream of the temperature sensor 28 are substantially the same when the bath system 2 is in the second circulation state, the operation coefficient C is "2". is set.

(Third Modification) The bath system 2 may not include the temperature sensor 28 . In this modification, the control device 150 executes the processing of step S10 instead of the processing of steps S12 to S20 in the circulation operation processing of FIG. ”) elapses.

(Fourth Modification) Air is introduced into the tank 52 in the above embodiment. 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, it is preferable to dispose a tank filled with gas at the upstream end of the air introduction passage 100 .

The technical elements described in this specification or in the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims as of the filing. In addition, the techniques exemplified in this specification or drawings can simultaneously achieve a plurality of purposes, and achieving one of them has technical utility in itself.

2: Bath system 10 : Heat source unit 12 : Heat source machine 20 : Water supply channel 22 : First return water channel 24 : First going water channel 26 : Hot water filling valve 28 : Temperature sensor 30 : First pump 32 : Water flow switch 50 : Fine bubbles Generation unit 52 : Tank 52a : Low water level electrode 52b : High water level electrode 60 : Second return water channel 62 : Third return water channel 64 : Jet water channel 66 : Communication water channel 68 : Second going water channel 70 : Third going water channel 74 : Water Water supply channel 80 : First switching valve 82 : Second switching valve 84 : Check valve 86 : Water supply control valve 88 : Second pump 100 : Air introduction channel 102 : Air pump 104 : Check valve 130 : Bathtub 130a : Wall portion 132 : Circulation connector 132a : Front surface 132b : Lower surface 134a : First discharge port 134b : First suction port 134c : Second suction port 134d : Second discharge port 136 : Upper water channel 136a : First discharge channel 136b : First suction channel 138: lower water passage 138a: second discharge passage 138b: second suction passages 140a to 140d: non-return portion 142: fine bubble discharge nozzle 150: controller 152: memory 200: water supply source

Claims (4)

a bathtub and
a heating device;
a pump;
a first discharge port for discharging water in which gas is dissolved into the bathtub;
a second discharge port for discharging water heated by the heating device into the bathtub;
a suction port for sucking water in the bathtub;
a gas-liquid mixing device for dissolving gas in water;
a first circulating water channel for causing water flowing in from the suction port to flow out from the first discharge port;
a second circulating water channel for causing water flowing in from the suction port to flow out from the second discharge port;
a third circulation channel for circulating water between the gas-liquid mixing device and the pump;
a fine bubble ejection nozzle provided on the first circulating water channel;
a controller;
A part of the first water circulation channel and a part of the second water circulation channel are shared,
The heating device and the pump are provided in a water channel shared by the first water circulation channel, the second water circulation channel, and the third water circulation channel,
The gas-liquid mixing device is provided in a water channel shared by the first water circulation channel and the third water circulation channel,
The control device is
By driving the pump, the water in the bathtub is introduced from the suction port into the first circulating water passage, and the water that has passed through the gas-liquid mixing device and the fine bubble discharge nozzle is discharged to the first discharge port. A fine bubble supply operation for discharging into the bathtub from
When an operation execution instruction, which is an instruction for executing the microbubble supply operation, is acquired, before executing the microbubble supply operation, the water in the bathtub is sucked from the suction port, and the second circulation is performed. a first circulation operation in which water in the water channel is drained from the second outlet;
a second circulation operation for circulating water in the third circulation water channel before executing the fine bubble supply operation when the operation execution instruction is acquired;
A bath system configured to be executable. a bathtub and
a pump;
A first outlet installed in the wall of the bathtub, wherein the amount of water ejected from the first outlet is the amount of water of a vertical component with respect to the wall on which the first outlet is installed. , the first outlet being larger than the amount of water in the parallel component with respect to the wall on which the first outlet is installed;
A second outlet installed on the wall of the bathtub, wherein the amount of water ejected from the second outlet is the amount of water of a parallel component with respect to the wall on which the second outlet is installed. , the second outlet, which is larger than the amount of water in the vertical component with respect to the wall on which the second outlet is installed;
a suction port for sucking water in the bathtub;
a gas-liquid mixing device for dissolving gas in water;
a first circulating water channel for causing water flowing in from the suction port to flow out from the first discharge port;
a second circulating water channel for causing water flowing in from the suction port to flow out from the second discharge port;
a third circulation channel for circulating water between the gas-liquid mixing device and the pump;
a fine bubble ejection nozzle provided on the first circulating water channel;
a controller;
A part of the first water circulation channel and a part of the second water circulation channel are shared,
The pump is provided in a water channel shared by the first water circulation channel, the second water circulation channel, and the third water circulation channel,
The gas-liquid mixing device is provided in a water channel shared by the first water circulation channel and the third water circulation channel,
The control device is
By driving the pump, the water in the bathtub is introduced from the suction port into the first circulating water passage, and the water that has passed through the gas-liquid mixing device and the fine bubble discharge nozzle is discharged to the first discharge port. A fine bubble supply operation for discharging into the bathtub from
When an operation execution instruction, which is an instruction for executing the microbubble supply operation, is acquired, before executing the microbubble supply operation, the water in the bathtub is sucked from the suction port, and the second circulation is performed. a first circulation operation in which water in the water channel is drained from the second outlet;
a second circulation operation for circulating water in the third circulation water channel before executing the fine bubble supply operation when the operation execution instruction is acquired;
A bath system configured to be executable. The control device is
When the operation execution instruction is acquired, executing the first circulation operation,
3. The bath system according to claim 1, wherein said second circulation operation is performed after said first circulation operation is finished. The bath system further comprises:
A heating device provided in a water channel shared by the first water circulation channel, the second water circulation channel, and the third water circulation channel,
The control device is
When the operation execution instruction is acquired, executing the second circulation operation,
In the second circulation operation, driving the heating device,
3. The bath system according to claim 1, wherein said first circulation operation is performed after said second circulation operation is completed.

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