JP7411490B2 - bath equipment - Google Patents

Description

The technology disclosed herein relates to a bath device.

Patent Document 1 discloses a first heat source device that heats water, a water supply channel that sends water from a water supply source to the first heat source device, and a hot water supply path that sends water flowing out from the first heat source device to a hot water supply point. , a second heat source device that heats water, a circulation path that circulates water between the bathtub and the second heat source device, a circulation pump provided in the circulation path, and a connection between the hot water supply path and the circulation path. A hot water filling path, a hot water filling control valve provided in the hot water filling path, a tank for dissolving gas in water, a gas supply path supplying the gas to the tank, and a gas supply path provided in the gas supply path. a control valve, a tank outgoing path that sends water from the circulation path to the tank, a tank return path that sends water from the tank to the circulation path, a pressure pump provided in the tank outgoing path, and the first heat source device, A bath apparatus is disclosed that includes a control device that controls operations of the second heat source device, the circulation pump, the hot water filling control valve, the gas control valve, and the pressure pump.

Japanese Patent Application Publication No. 2009-18118

In the bath device of Patent Document 1, a first heat source device, a second heat source device, a first device including a circulation pump, a tank, a pressurizing pump, and a second device including a control device are separate. It is installed as a device in a house. Such a configuration requires separate piping to connect the first device and the second device. In this case, incorrect piping is likely to occur when installing the bath equipment, which poses a problem in workability. This specification provides a technique that can further improve the workability when installing a bath device.

The bath apparatus disclosed in this specification includes a first heat source device that heats water, a water supply channel that sends water from a water supply source to the first heat source device, and a hot water supply point that supplies water flowing out from the first heat source device. a second heat source device that heats water; a circulation path that circulates water between the bathtub and the second heat source device; a circulation pump provided in the circulation path; A hot water filling path that connects the circulation path, a hot water filling control valve provided in the hot water filling path, a tank for dissolving gas in water, a gas supply path that supplies the gas to the tank, and the gas supply path. a gas control valve provided in the tank, a tank outgoing path that sends water from the circulation path to the tank, a tank return path that sends water from the tank to the circulation path, a pressure pump provided in the tank outgoing path; a control device that controls operations of the first heat source device, the second heat source device, the circulation pump, the hot water control valve, the gas control valve, and the pressurizing pump, at least the first heat source device, and the second heat source device; A casing that houses a heat source device, the circulation pump, the tank, the pressure pump, and the control device is provided. The pressurizing pump includes a first pressurizing pump provided on the tank outgoing path, and a second pressurizing pump provided on the tank outgoing path separately from the first pressurizing pump. The first pressure pump and the second pressure pump are arranged such that the direction of the rotation axis of the first pressure pump is different from the direction of the rotation axis of the second pressure pump. Note that the direction of the rotation axis of the pump in this specification refers to the direction in which the right-handed screw advances when the right-handed screw is turned in the direction in which the rotating body of the pump rotates. Therefore, if the rotation axis of the first pressure pump is not parallel to the rotation axis of the second pressure pump, the direction of the rotation axis of the first pressure pump and the rotation of the second pressure pump It can be said that the directions of the axes are different. Furthermore, even if the rotation axis of the first pressure pump is parallel to the rotation axis of the second pressure pump, the direction in which the rotating body of the first pressure pump rotates is the same as the rotation axis of the second pressure pump. When the direction is opposite to the direction in which the body rotates, it can be said that the direction of the rotation axis of the first pressure pump and the direction of the rotation axis of the second pressure pump are different.

According to the above configuration, the main components of the bath device are housed in a single casing, so incorrect piping is less likely to occur when installing the bath device, and workability when installing the bath device is further improved. can do. Further, when the pressure pump is housed inside the casing, it is necessary to suppress vibrations during operation of the pressure pump from being transmitted to the casing. When the pressurizing pump includes a first pressurizing pump and a second pressurizing pump, if the vibrations of the respective pumps resonate, there is a risk that very large vibrations will be transmitted to the casing. In the above configuration, the first pressure pump and the second pressure pump are arranged such that the direction of the rotation axis of the first pressure pump is different from the direction of the rotation axis of the second pressure pump. With such a configuration, it is possible to suppress vibrations of the first pressure pump and vibrations of the second pressure pump from resonating.

In the bath apparatus described above, the first heat source device may include a combustor and a latent heat exchanger that recovers latent heat of combustion gas generated in the combustor to heat water. The bath device may further include a neutralizer that is housed in the casing and neutralizes drain generated in the latent heat exchanger. When viewed from the front with the bath device installed, the pressurizing pump may be disposed on one side in the left-right direction, and the neutralizer may be disposed on the other side in the left-right direction.

If both the neutralizer and the pressure pump are placed closer to one side in the left-right direction of the bath device, the weight of the neutralizer and the pressure pump are large, so the weight of the bath device in the left-right direction will be reduced. Your balance will become worse. According to the above configuration, the pressure pump is placed closer to one side in the left-right direction, and the neutralizer is placed closer to the other side in the left-right direction, so the weight balance in the left-right direction of the bath device is improved. It can be done.

In the above bath device, the control device includes a first control device that controls operations of the first heat source device, the second heat source device, the circulation pump, and the hot water filling control valve; It may also include a second control device that is separately provided and controls the operations of the gas control valve and the pressurizing pump. The first control device and the second control device may be connected to each other via a communication line.

According to the above configuration, the existing device is equipped with a first heat source device, a second heat source device, a circulation pump, and a hot water filling control valve, and is capable of filling hot water into the bathtub and reheating the water in the bathtub. It becomes possible to reuse the control device used in the first control device as the first control device. Further, according to the above configuration, the control device used in the existing device, which is equipped with a tank, a pressurizing pump, and a gas control valve and is capable of generating microbubbles in water in a bathtub, can be used as a second control device. It becomes possible to use it as a control device. According to the above configuration, the control device can be shared with existing devices, and manufacturing costs can be reduced.

In the bath device described above, the tank may be arranged near a lower end of the casing. The tank return path may be connected to a lower end of the tank. The circulation path may extend from the bottom of the casing toward the bathtub.

When generating microbubbles in bathtub water using a bathtub device, if the pressure loss in the flow path from the tank to the bathtub is large, the water will be depressurized and bubbles will be generated before reaching the bathtub, causing the water in the bathtub to deteriorate. There is a risk that the white turbidity of the product may decrease. According to the above configuration, the length of the flow path from the tank to the bathtub can be shortened, so pressure loss in the flow path from the tank to the bathtub can be reduced. Decrease in white turbidity of water in the bathtub can be suppressed.

1 is a diagram schematically showing the configuration of a bath device 2 according to an example. FIG. 2 is a perspective view of the bath device 2 according to the embodiment seen from the front left and upper side. FIG. 3 is a perspective view of the bath device 2 according to the embodiment with the front plate 176 removed, viewed from the front left and upper side. FIG. 2 is a perspective view of the bath device 2 according to the embodiment, with the front plate 176 and the first control circuit board 160 removed, as seen from the front left and upper side. FIG. 2 is a perspective view of the bath device 2 according to the embodiment with the rear plate removed, viewed from the rear right and lower side.

(Example)
The bath device 2 shown in FIG. 1 heats water supplied from a water supply source (not shown) such as a water supply, and sends the heated water to a desired temperature to a bathtub 6 installed in a kitchen or the like, or to a bathroom. The water can be supplied to the bathtub 8 located at Further, the bath device 2 can reheat the water in the bathtub 8. Furthermore, the bath device 2 can generate fine bubbles in the water in the bathtub 8.

The bath device 2 includes a first heat source device 10, a second heat source device 12, a combustion chamber 14, and a combustion fan 16. The first heat source device 10 is a heat source device used for supplying hot water to the sink 6 and filling the bathtub 8 with hot water. The second heat source device 12 is a heat source device used for reheating the bathtub 8. The interior of the combustion chamber 14 is divided into a first combustion chamber 20 and a second combustion chamber 22 by a partition wall 18 . The first heat source device 10 is housed in the first combustion chamber 20, and the second heat source device 12 is housed in the second combustion chamber 22. Air is supplied into the combustion chamber 14 by a combustion fan 16 . An exhaust port 24 is formed in the combustion chamber 14 . Combustion gas from the first heat source device 10 and the second heat source device 12 is exhausted to the outside through the exhaust port 24.

The first heat source device 10 includes burners 26a, 26b, and 26c, a spark plug 28, a flame rod 30, a sensible heat exchanger 32, and a latent heat exchanger 34. Burners 26a, 26b, and 26c each have a different combustion area. Fuel gas is supplied to each of the burners 26a, 26b, and 26c via gas branch paths 36a, 36b, and 36c. Opening/closing valves 38a, 38b, and 38c are provided in each of the gas branch paths 36a, 36b, and 36c. The on-off valves 38a, 38b, and 38c open and close the corresponding gas branch paths 36a, 36b, and 36c. The spark plug 28 is driven by an igniter 29. When the spark plug 28 is driven while air is being supplied by the combustion fan 16 and fuel gas is being supplied to the burners 26a, 26b, 26c from the gas branch paths 36a, 36b, 36c, the burners 26a, 26b and 26c are burned. Each burner 26a, 26b, 26c burns when the corresponding on-off valve 38a, 38b, 38c is open, and does not burn when the corresponding on-off valve 38a, 38b, 38c is closed. Flame rod 30 detects whether burners 26a, 26b, 26c are burning. Combustion gas from the burners 26a, 26b, and 26c flows inside the first combustion chamber 20 from below to above, is cooled by heat exchange in the sensible heat exchanger 32, and then passes through the latent heat exchanger 34. After being further cooled by heat exchange, it is discharged from the exhaust port 24.

The second heat source device 12 includes a burner 40, a spark plug 42, a flame rod 44, a sensible heat exchanger 46, and a latent heat exchanger 48. Fuel gas is supplied to the burner 40 via the gas branch path 36d. An on-off valve 38d is provided in the gas branch path 36d. The spark plug 42 is driven by the igniter 29. When the spark plug 42 is driven while air is being supplied by the combustion fan 16 and fuel gas is being supplied to the burner 40 from the gas branch path 36d, the burner 40 burns. Flame rod 44 detects whether burner 40 is burning. The combustion gas from the burner 40 flows from the bottom to the top inside the second combustion chamber 22, is cooled by heat exchange in the sensible heat exchanger 46, and is then cooled by heat exchange in the latent heat exchanger 34. After being further cooled, it is discharged from the exhaust port 24.

The upstream ends of the gas branch paths 36a, 36b, 36c, and 36d are connected to the downstream end of the gas supply path 50. Fuel gas is supplied to the upstream end of the gas supply path 50 from a gas supply source (not shown). The gas supply path 50 is provided with an on-off valve 52 and a flow rate adjustment valve 54 . The on-off valve 52 opens and closes the gas supply path 50. The flow rate adjustment valve 54 adjusts the flow rate of the fuel gas flowing through the gas supply path 50 by adjusting the opening degree of the gas supply path 50, and the combustion amount of the burners 26a, 26b, 26c of the first heat source device 10, The combustion amount of the burner 40 of the second heat source device 12 is adjusted.

A thermal fuse 55 is provided on the outer surface of the combustion chamber 14 to detect an overheated state of the combustion chamber 14 . A drain pan 56 is provided inside the combustion chamber 14 . Drain generated in the latent heat exchanger 34 of the first heat source device 10 and drain generated in the latent heat exchanger 48 of the second heat source device 12 drips into the drain pan 56 . Drain dripped into the drain pan 56 is sent to the neutralizer 60 via the drain discharge path 58. The inside of the neutralizer 60 is filled with a neutralizing agent (not shown) such as calcium carbonate. The drain sent to the neutralizer 60 is neutralized by the neutralizer and then discharged to the outside via the drainage channel 62. The neutralizer 60 includes water level electrodes 61a and 61b that detect the internal water level.

The upstream end of the latent heat exchanger 34 of the first heat source device 10 is connected to the downstream end of the water supply channel 64. Water is supplied to the upstream end of the water supply channel 64 from a water supply source. The downstream end of the latent heat exchanger 34 is connected to the upstream end of the sensible heat exchanger 32 via a communication path 66. The downstream end of the sensible heat exchanger 32 is connected to the upstream end of the hot water supply path 68 . The downstream end of the hot water supply path 68 is connected to the run 6. The water supply channel 64 and the hot water supply channel 68 are connected by a bypass channel 70. A bypass servo 72 is provided at the connection point between the water supply channel 64 and the bypass channel 70 . The bypass servo 72 adjusts the opening degree of the bypass path 70 to adjust the ratio of the flow rate of water sent from the water supply channel 64 to the first heat source device 10 and the flow rate of water sent from the water supply channel 64 to the bypass channel 70. adjust. A water flow sensor 74 and a water flow servo 76 are provided in the water supply channel 64 upstream of the bypass servo 72 . The water flow sensor 74 detects the flow rate of water flowing through the water supply channel 64 . The water flow servo 76 adjusts the flow rate of water flowing through the water supply channel 64 . A hot water supply high limit switch 78 and a heat exchanger outlet thermistor 80 are provided in the hot water supply path 68 upstream of the connection point with the bypass path 70 . The hot water supply high limit switch 78 detects that excessively high temperature water flows into the hot water supply path 68. Heat exchanger outlet thermistor 80 detects the temperature of water flowing into hot water supply path 68 from sensible heat exchanger 32 . A hot water supply thermistor 82 is provided in the hot water supply passage 68 downstream of the connection point with the bypass passage 70 . The hot water supply thermistor 82 detects the temperature of water sent from the hot water supply path 68 to the drain 6. Note that the water supply channel 64 and the communication channel 66 are connected by a heat exchanger water drain channel 84.

When the bath device 2 supplies hot water to the bathtub 6, the burners 26a, 26b, and 26c of the first heat source device 10 burn. In this case, water supplied from the water supply source to the water supply channel 64 is heated by heat exchange in the latent heat exchanger 34, then further heated by heat exchange in the sensible heat exchanger 32, and then 68 to the callan 6. At this time, the high temperature water flowing into the hot water supply path 68 from the sensible heat exchanger 32 and the low temperature water flowing into the hot water supply path 68 from the water supply path 64 via the bypass path 70 are mixed, and the hot water flowing into the hot water supply path 68 is mixed. The temperature of the flowing water is regulated. By adjusting the combustion amount of the burners 26a, 26b, 26c of the first heat source device 10 and the opening degree of the bypass passage 70 in the bypass servo 72, the temperature of the water flowing through the hot water supply passage 68 can be adjusted to a desired temperature. can.

The upstream end of the latent heat exchanger 48 of the second heat source device 12 is connected to the downstream end of the reheating outgoing path 86. The upstream end of the reheating outgoing path 86 is connected to a discharge port of a circulation pump 88 . A suction port of the circulation pump 88 is connected to a first switching valve 92 via a relay path 90 . The first switching valve 92 is connected to a circulation fitting 96 provided in the bathtub 8 via a first bathtub circulation path 94 . The downstream end of the latent heat exchanger 48 is connected to the upstream end of the sensible heat exchanger 46 via a communication path 98 . The downstream end of the sensible heat exchanger 46 is connected to the upstream end of the reheat return path 100. A downstream end of the reheat return path 100 is connected to a second switching valve 102 . The second switching valve 102 is connected to a circulation fitting 96 of the bathtub 8 via a second bathtub circulation path 104 . The reheating outward path 86 is provided with a water flow switch 106 and a water level sensor 108. The water flow switch 106 detects the presence or absence of water flow within the reheating outward path 86. Water level sensor 108 detects the level of water stored in bathtub 8. A bathtub return thermistor 110 is provided in the relay path 90. Bathtub return thermistor 110 detects the temperature of water flowing through relay path 90 . The reheating return path 100 is provided with a reheating high limit switch 112 and a bathtub going thermistor 114. The reheating high limit switch 112 detects that excessively high temperature water flows into the reheating return path 100. The bathtub thermistor 114 detects the temperature of water flowing from the sensible heat exchanger 46 into the reheat return path 100. Note that the reheating outward path 86 and the communication path 98 are connected by a heat exchanger water drain path 116.

When the bath device 2 reheats the bathtub 8, the burner 40 of the second heat source device 12 burns while the circulation pump 88 is driven. In this case, the water in the bathtub 8 flows into the first bathtub circulation path 94 via the circulation fitting 96, passes through the first switching valve 92, the relay path 90, the circulation pump 88, and the reheating outgoing path 86, and then flows into the second bathtub circulation path 94 through the circulation fitting 96. It is sent to the heat source device 12. The water sent to the second heat source device 12 is heated by heat exchange in the latent heat exchanger 48, and then further heated by heat exchange in the sensible heat exchanger 46, and then flows into the reheating return path 100. do. The water that has flowed into the reheating return path 100 is returned to the bathtub 8 via the second switching valve 102, the second bathtub circulation path 104, and the circulation fitting 96.

The upstream end of the hot water supply path 118 is connected to the hot water supply path 68 on the downstream side of the connection point of the bypass path 70 . The downstream end of the hot water supply path 118 is connected to the relay path 90. The hot water filling path 118 is provided with a hot water filling control valve 120, check valves 122, 124, and a flow rate sensor 126. The hot water filling control valve 120 opens and closes the hot water filling path 118. The check valves 122 and 124 allow the flow of water from the upstream side of the hot water supply path 118 to the downstream side, and prohibit the flow of water from the downstream side of the hot water supply path 118 toward the upstream side. The flow rate sensor 126 detects the flow rate of water flowing through the hot water filling path 118 . The hot water filling path 118 , which is upstream of the check valve 124 and downstream of the check valve 122 , is connected to the drain path 62 of the neutralizer 60 via an overflow path 127 . An atmosphere release valve 128 is provided in the overflow path 127. Water supply pressure from the water supply channel 64 is applied to the atmosphere release valve 128 via the back pressure path 130. The atmosphere release valve 128 opens the overflow passage 127 and connects the hot water filling passage 118 to the drain passage 62 when the water supply pressure of the water supply passage 64 decreases.

When the bath device 2 fills the bathtub 8 with hot water, the burners 26a, 26b, and 26c of the first heat source device 10 burn with the hot water filling control valve 120 open. In this case, water supplied from the water supply source to the water supply channel 64 is heated by heat exchange in the latent heat exchanger 34, and then further heated by heat exchange in the sensible heat exchanger 32. The high temperature water flowing into the hot water supply path 68 from the sensible heat exchanger 32 mixes with the low temperature water flowing into the hot water supply path 68 from the water supply path 64 via the bypass path 70. The water whose temperature has been adjusted to a desired temperature by adjusting the combustion amount of the burners 26a, 26b, 26c of the first heat source device 10 and the opening degree of the bypass passage 70 in the bypass servo 72 flows into the hot water filling passage 118. . The water flowing into the hot water supply path 118 passes through the relay path 90, the first switching valve 92, the first bathtub circulation path 94, and flows into the bathtub 8 via the circulation fitting 96. 88, the circulation fitting 96 via the reheating outward path 86, the latent heat exchanger 48, the communication path 98, the sensible heat exchanger 46, the reheating return path 100, the second switching valve 102, and the second bathtub circulation path 104. The water flows into the bathtub 8 through the water.

The bath device 2 further includes a tank 132. The tank 132 includes water level electrodes 133a, 133b, and 133c for detecting the internal water level. The tank 132 is connected to a downstream end of a tank outgoing path 138, an upstream end of a tank returning path 140, and a downstream end of a gas supply path 142.

The upstream end of the tank outgoing path 138 is connected to the reheating return path 100. A water volume servo 144 and pressure pumps 146 and 148 are provided on the tank outgoing path 138. The water flow servo 144 adjusts the flow rate of water flowing through the tank outgoing path 138 by adjusting the opening degree of the tank outgoing path 138 . The pressurizing pumps 146 and 148 pressurize the water in the tank outgoing path 138 and send it out toward the tank 132.

A downstream end of the tank return path 140 is connected to the first switching valve 92 . A check valve 150 is provided in the tank return path 140. The check valve 150 allows the flow of water from the upstream side of the tank return path 140 toward the downstream side, and prohibits the flow of water from the downstream side of the tank return path 140 toward the upstream side.

The upstream end of the gas supply path 142 is open to air. A gas control valve 152 is provided in the gas supply path 142 . The gas control valve 152 opens and closes the gas supply path 142.

The first switching valve 92 communicates between the tank return path 140 and the relay path 90 and cuts off the first bathtub circulation path 94, and the first state in which the first bathtub circulation path 94 and the tank return path 140 are communicated and the relay path It is possible to switch between a second state in which the first bathtub circulation path 94, the tank return path 140, and the relay path 90 are communicated with each other.

One end of a communication path 154 is connected to the second switching valve 102 . The other end of the communication path 154 is connected to the relay path 90. The second switching valve 102 connects the second bathtub circulation path 104 and the reheating return path 100 to the first state in which the communication path 154 is blocked, and the second state in which the second bathtub circulation path 104 and the communication path 154 are connected to each other and the reheating return path 100 is communicated. It is switchable between a second state in which the return path 100 is blocked.

When the bath device 2 generates microbubbles in the water in the bathtub 8, a gas introduction operation in which gas is introduced into the tank 132 and a circulation operation in which water is circulated between the bathtub 8 and the tank 132 are performed alternately. .

When the bath device 2 performs gas introduction operation, the gas control valve 152 is opened, the first switching valve 92 is switched to the first state, and the second switching valve 102 is switched to the first state. Circulation pump 88 is driven. In this case, water in the tank 132 is sucked out to the tank return path 140, so that air flows into the tank 132 via the gas supply path 142. At this time, the water that has flowed into the tank return path 140 is transferred to the first switching valve 92, the relay path 90, the circulation pump 88, the reheating outward path 86, the latent heat exchanger 48, the communication path 98, the sensible heat exchanger 46, and the reheating path 86. It flows into the bathtub 8 via the heating return path 100, the second switching valve 102, the second bathtub circulation path 104, and the circulation fitting 96.

When the bath device 2 performs circulation operation, the gas control valve 152 is closed, the first switching valve 92 is switched to the second state, and the second switching valve 102 is switched to the second state. Pump 88 and pressure pumps 146 and 148 are driven. In this case, water in the bathtub 8 is sucked out to the second bathtub circulation path 104 via the circulation fitting 96. The water that has flowed into the second bathtub circulation path 104 is transferred to the second switching valve 102, the connection path 154, the relay path 90, the circulation pump 88, the reheating outgoing path 86, the latent heat exchanger 48, the connection path 98, and the sensible heat exchanger. 46, it flows into the tank 132 via the reheating return route 100 and the tank outbound route 138. At this time, the water flowing into the tank 132 is pressurized by pressure pumps 146 and 148, and in the tank 132, air is dissolved in the water under pressure. The water in which air has been dissolved under pressure flows from the tank 132 into the bathtub 8 via the tank return path 140, the first switching valve 92, the first bathtub circulation path 94, and the circulation fitting 96. The circulation fitting 96 is provided with a fine bubble discharge nozzle (not shown) that reduces the pressure of water flowing from the first bathtub circulation path 94 to the bathtub 8 . The water in which air has been dissolved under pressure is depressurized when passing through the fine bubble discharge nozzle in the circulation fitting 96, and then the pressure is increased to atmospheric pressure in the bathtub 8, thereby generating fine bubbles in the water in the bathtub 8. do.

The bath device 2 further includes a first control circuit board 160 and a second control circuit board 162. Both the first control circuit board 160 and the second control circuit board 162 include a CPU, ROM, RAM, etc., and operate according to programs stored in the ROM. The first control circuit board 160 and the second control circuit board 162 can communicate in both directions via a communication line 164.

The first control circuit board 160 mainly controls components for supplying hot water to the bathtub 6 by the bath device 2, filling the bathtub 8 with hot water, and reheating the water in the bathtub 8. The first control circuit board 160 includes frame rods 30 and 44, a thermal fuse 55, water level electrodes 61a and 61b, a water flow sensor 74, a hot water supply high limit switch 78, a heat exchanger outlet thermistor 80, a water flow switch 106, a water level sensor 108, and a bathtub. Various signals are received from the return thermistor 110, the reheat high limit switch 112, the bathtub thermistor 114, and the flow rate sensor 126. The first control circuit board 160 also includes a combustion fan 16, an igniter 29, on-off valves 38a, 38b, 38c, and 38d, an on-off valve 52, a flow rate adjustment valve 54, a bypass servo 72, a water volume servo 76, a circulation pump 88, and a hot water tank. Controls the operation of control valve 120.

The second control circuit board 162 mainly controls components for generating fine bubbles in the water in the bathtub 8 by the bath device 2 . The second control circuit board 162 receives various signals from the water level electrodes 133a, 133b, and 133c. Further, the second control circuit board 162 controls the operations of the first switching valve 92, the second switching valve 102, the water volume servo 144, the pressure pumps 146 and 148, and the gas control valve 152.

The bath device 2 includes a casing 4. Various components of the bath device 2 described above are housed inside the casing 4. The gas supply path 50, the drainage path 62, the water supply path 64, the hot water supply path 68, the first bathtub circulation path 94, and the second bathtub circulation path 104 extend from the inside of the casing 4 to the outside. Outside the casing 4, drain plugs 166, 168, 170, and 172 are provided in each of the water supply channel 64, the hot water supply channel 68, the first bathtub circulation path 94, and the second bathtub circulation path 104.

The first control circuit board 160 can communicate in both directions with a remote control 174 installed in the kitchen or bathroom. The remote control 174 presents various information about the bath device 2 to the user, and also receives various operations on the bath device 2 from the user.

As shown in FIGS. 2 and 3, the casing 4 has a substantially rectangular parallelepiped shape. The casing 4 includes a front plate 176, a top plate 178, a right plate 180, a left plate 182, a bottom plate 184, and a rear plate (not shown). The upper plate 178, the right plate 180, and the left plate 182 are integrally formed. The bath device 2 is fixed to the outer wall of the house via a mounting plate 186 attached to the casing 4 with the rear plate of the casing 4 facing the outer wall of the house. In this specification, when the bath device 2 is installed, the vertical direction is referred to as the downward direction, the opposite direction to the downward direction is referred to as the upward direction, and the direction where the outer wall of the house is located when viewed from the bath device 2 is referred to as the rear direction. The direction opposite to the rear direction is called the front direction, the direction of the right hand with respect to the upward and front directions is called the right direction, and the direction opposite to the right direction is called the left direction. The exhaust port 24 of the combustion chamber 14 passes through the upper part of the front plate 176 and discharges combustion gas forward.

As shown in FIGS. 3 to 5, the combustion chamber 14 is disposed in the upper part of the casing 4. As shown in FIGS. As shown in FIGS. 4 and 5, the combustion fan 16 is arranged below the combustion chamber 14 inside the casing 4. The combustion fan 16 is arranged near the center of the casing 4 in the front-rear direction. The combustion fan 16 is disposed near the center of the casing 4 in the left-right direction. The combustion fan 16 is arranged so that its rotation axis is substantially parallel to the front-rear direction. The combustion fan 16 is, for example, a sirocco fan, and is arranged so as to suck in air from the rear to the front and expel air from the bottom to the top.

As shown in FIGS. 3 and 4, the neutralizer 60 is disposed inside the casing 4 near the front end, near the left end, and near the bottom end of the casing 4.

As shown in FIG. 5, the circulation pump 88 is disposed inside the casing 4 near the rear end and near the lower end of the casing 4. The circulation pump 88 is arranged so as to straddle the center of the casing 4 in the left-right direction. The circulation pump 88 is arranged such that its rotation axis is substantially parallel to the left-right direction, and the rotation axis faces leftward.

The tank 132 is arranged below the combustion chamber 14 inside the casing 4 . The tank 132 is arranged near the rear end and near the right end of the casing 4. The tank 132 is arranged so that its longitudinal direction is substantially parallel to the vertical direction. Tank return path 140 is connected to the lower end of tank 132. The tank 132 is arranged to the right of the combustion fan 16 and the circulation pump 88. The upstream end of the gas supply path 142 is open to air inside the casing 4.

The first switching valve 92 and the second switching valve 102 are arranged inside the casing 4 near the lower end of the casing 4 . The first switching valve 92 and the second switching valve 102 are arranged near the tank 132 in the front-back direction and the left-right direction. The first switching valve 92 is arranged near the rear end of the casing 4, and the second switching valve 102 is arranged further forward than the first switching valve 92. The first switching valve 92 and the second switching valve 102 are arranged to the right of the combustion fan 16 and the circulation pump 88.

As shown in FIG. 4, the pressure pumps 146 and 148 are arranged below the combustion chamber 14 inside the casing 4. Pressure pumps 146 and 148 are arranged near the right end of casing 4. Pressurizing pumps 146 and 148 are arranged ahead of tank 132. Pressure pump 146 is arranged below pressure pump 148. The pressurizing pump 146 is arranged such that its rotation axis is substantially parallel to the left-right direction, and the rotation axis faces leftward. The pressurizing pump 148 is arranged so that its rotation axis is substantially parallel to the front-rear direction, and the rotation axis faces forward. That is, when the bath device 2 is viewed from above in a plan view, the direction of the rotation axis of the pressure pump 148 differs from the direction of the rotation axis of the pressure pump 146 by approximately 90 degrees. The pressurizing pumps 146 and 148 are arranged to the right of the combustion fan 16 and the circulation pump 88.

As shown in FIG. 3, the first control circuit board 160 is disposed inside the casing 4 near the front end. The first control circuit board 160 is arranged along a plane including the vertical direction and the horizontal direction. The first control circuit board 160 is disposed below the center of the casing 4 in the vertical direction. The first control circuit board 160 is arranged so as to straddle the center of the casing 4 in the left-right direction.

The second control circuit board 162 is located inside the casing 4 near the right end. The second control circuit board 162 is arranged along a plane including the front-back direction and the up-down direction. The second control circuit board 162 is disposed above the vertical center of the casing 4 in the vertical direction. The second control circuit board 162 is arranged so as to straddle the center of the casing 4 in the front-back direction. The second control circuit board 162 is arranged between the combustion chamber 14 and the right plate 180.

Note that in the above embodiment, a case has been described in which the upstream end of the gas supply path 142 is open to the air inside the casing 4; however, the upstream end of the gas supply path 142 is open to the air outside the casing 4. You can leave it there. Alternatively, a gas supply source (not shown) supplying a gas such as carbon dioxide, hydrogen, or oxygen may be connected to the upstream end of the gas supply path 142 to supply a gas other than air to the tank 132.

In the above embodiment, an air pump (not shown) may be provided in the gas supply path 142 instead of the gas control valve 152. In this case, the air pump supplies gas to the tank 132 by opening and closing the gas supply path 142 and sending out the gas from the upstream side of the gas supply path 142 toward the downstream side.

In the above embodiment, a case has been described in which the direction of the rotation axis of the pressure pump 148 is different from the direction of the rotation axis of the pressure pump 146 by approximately 90 degrees when the bath device 2 is viewed from above. Differently from this, when the bath device 2 is viewed from above, the direction of the rotation axis of the pressure pump 148 may be different from the direction of the rotation axis of the pressure pump 146 by an angle smaller than 90°. Alternatively, they may have different configurations by an angle greater than 90 degrees, or may have different configurations by approximately 180 degrees. Alternatively, when the bath device 2 is viewed from the front or right side, the direction of the rotation axis of the pressure pump 148 may be different from the direction of the rotation axis of the pressure pump 146 by approximately 90 degrees, The configuration may be different at an angle smaller than 90°, the configuration may be different at an angle greater than 90°, or the configuration may be different at an angle of approximately 180°.

As described above, the bath device 2 of this embodiment includes the first heat source device 10 that heats water, the water supply channel 64 that sends water from the water source to the first heat source device 10, and the water flowing out from the first heat source device 10. A hot water supply path 68 that sends water to the bathtub 6 (an example of a hot water supply point), a second heat source device 12 that heats the water, and a first bathtub circulation path 94 that circulates water between the bathtub 8 and the second heat source device 12. , the first switching valve 92, the relay path 90, the reheating outgoing path 86, the reheating return path 100, the second switching valve 102, the second bathtub circulation path 104 (an example of a circulation path), and the relay path 90 and the reheating outgoing path 86. A circulation pump 88 provided between them, a hot water supply path 118 that connects the hot water supply path 68 and the relay path 90, a hot water supply control valve 120 provided in the hot water supply path 118, and a tank 132 that dissolves gas in water. , a gas supply path 142 that supplies gas to the tank 132, a gas control valve 152 provided in the gas supply path 142, a tank outward path 138 that sends water from the reheat return path 100 to the tank 132, and a first switching from the tank 132. A tank return path 140 that sends water to the valve 92, pressure pumps 146, 148 provided in the tank outbound path 138, the first heat source device 10, the second heat source device 12, the circulation pump 88, the hot water control valve 120, and the gas control A first control circuit board 160 and a second control circuit board 162 (an example of a control device) that control the operations of the valve 152 and the pressure pumps 146 and 148, at least the first heat source device 10, the second heat source device 12, It includes a casing 4 that houses a circulation pump 88, a tank 132, pressure pumps 146, 148, a first control circuit board 160, and a second control circuit board 162.

According to the above configuration, since the main components of the bath device 2 are housed in the single casing 4, incorrect piping is less likely to occur when installing the bath device 2, and construction work when installing the bath device 2 is reduced. You can further improve your sexual performance.

In the bath device 2, the first heat source device 10 includes burners 26a, 26b, and 26c (example of a combustor) and a latent heat generator that heats water by recovering latent heat of combustion gas generated by the burners 26a, 26b, and 26c. An exchanger 34 is provided. The bath device 2 is housed in a casing 4 and further includes a neutralizer 60 that neutralizes drain generated in the latent heat exchanger 34. When viewed from the front with the bath device 2 installed, the pressure pumps 146 and 148 are arranged on one side in the left-right direction, and the neutralizer 60 is arranged on the other side in the left-right direction.

If both the neutralizer 60 and the pressure pumps 146, 148 are placed closer to one side in the left-right direction of the bath device 2, the weights of the neutralizer 60 and the pressure pumps 146, 148 are large. Therefore, the weight balance of the bath device 2 in the left and right direction becomes poor. According to the above configuration, the pressurizing pumps 146 and 148 are placed closer to one side in the left-right direction, and the neutralizer 60 is placed closer to the other side in the left-right direction, so that the weight of the bath device 2 in the left-right direction is Good balance can be achieved.

In the bath device 2 described above, the pressurizing pump 146 (an example of a first pressurizing pump) and the pressurizing pump 148 (an example of a second pressurizing pump) are provided separately in the tank outgoing path 138, respectively. The pressure pumps 146 and 148 are arranged such that the direction of the rotation axis of the pressure pump 146 is different from the direction of the rotation axis of the pressure pump 148.

When the pressure pumps 146 and 148 are housed inside the casing 4, it is necessary to suppress vibrations from being transmitted to the casing 4 during operation of the pressure pumps 146 and 148. If the vibrations of the pressure pump 146 and the vibrations of the pressure pump 148 resonate, there is a risk that very large vibrations will be transmitted to the casing 4. In the above configuration, the pressure pump 146 and the pressure pump 148 are arranged such that the direction of the rotation axis of the pressure pump 146 is different from the direction of the rotation axis of the pressure pump 148. With such a configuration, it is possible to suppress vibrations of the pressure pump 146 and vibrations of the pressure pump 148 from resonating.

In the bath device 2, a first control circuit board 160 (an example of a first control device) and a second control circuit board 162 (an example of a second control device) are provided separately. The first control circuit board 160 controls the operations of the first heat source device 10, the second heat source device 12, the circulation pump 88, and the hot water filling control valve 120. The second control circuit board 162 controls the operation of the gas control valve 152 and the pressure pumps 146 and 148. The first control circuit board 160 and the second control circuit board 162 are connected to each other via a communication line 164.

According to the above configuration, the first heat source device 10, the second heat source device 12, the circulation pump 88, and the hot water filling control valve 120 are provided, and the hot water filling the bathtub 8 and the reheating of the water in the bathtub 8 are performed. It becomes possible to use a control circuit board used in an existing device capable of this as the first control circuit board 160. Further, according to the above configuration, the tank 132, the pressurizing pumps 146, 148, and the gas control valve 152 are provided, and can be used in an existing device capable of generating microbubbles in the water in the bathtub 8. The control circuit board can be used as the second control circuit board 162. According to the above configuration, the control circuit board can be shared with existing devices, and manufacturing costs can be reduced.

In the bath device 2, the tank 132 is arranged near the lower end of the casing 4. Tank return path 140 is connected to the lower end of tank 132. The first bathtub circulation path 94 extends from the bottom of the casing 4 toward the bathtub 8.

When generating microbubbles in the water in the bathtub 8 by the bath device 2, if the pressure loss in the flow path from the tank 132 to the bathtub 8 is large, the water will be depressurized before reaching the bathtub 8 and bubbles will be generated. As a result, the white turbidity of the water in the bathtub 8 may decrease. According to the above configuration, the length of the flow path from the tank 132 to the bathtub 8 can be shortened, so that pressure loss in the flow path from the tank 132 to the bathtub 8 can be reduced. A decrease in white turbidity of water in the bathtub 8 can be suppressed.

In addition, in the bath device 2 of this embodiment, when viewed from the front with the bath device 2 installed, the pressurizing pumps 146, 148 and the tank 132 are arranged on one side in the left-right direction, and the neutralization The container 60 is arranged on the other side in the left-right direction. With such a configuration, the weight balance of the bath device 2 in the left-right direction can be made better.

In the bath device 2 of this embodiment, the first heat source device 10, the second heat source device 12, and the combustion chamber 14 are arranged in the upper part of the casing 4, and the combustion fan 16, the neutralizer 60, the circulation pump 88, and the tank 132 and pressure pumps 146, 148 are arranged in the lower part of the casing 4. With such a configuration, the vertical weight balance of the bath device 2 can be made good.

In the bath device 2 of this embodiment, the main components of the bath device 2 are housed in a single casing 4. Unlike this, the first heat source device 10, the second heat source device 12, the circulation pump 88, the hot water filling control valve 120, and the first control circuit board 160 are housed in one casing. The first device capable of reheating the water in the bathtub 8, the tank 132, the pressure pumps 146, 148, the gas control valve 152, and the second control circuit board 162 are housed in a separate casing. When a second device is housed in the bathtub 8 and is capable of generating microbubbles in the water in the bathtub 8, additional piping is required to connect the first device and the second device. In this case, the piping for connecting the first device and the second device may have a trap shape, making it impossible to drain water from the piping, which may cause the piping to freeze due to outside air. In the bath device 2 of this embodiment, since piping for connecting such a first device and a second device is not required, problems caused by freezing of the piping can be suppressed.

Although each embodiment has been described in detail above, these are merely illustrative and do not limit the scope of the claims. The techniques described in the claims include various modifications and changes to the specific examples illustrated above. The technical elements described in this specification or the drawings exhibit technical utility alone or in various combinations, and are not limited to the combinations described in the claims as filed. Furthermore, the techniques illustrated in this specification or the drawings can achieve multiple objectives simultaneously, and achieving one of the objectives has technical utility in itself.

2: Bath equipment 4: Casing 6: Curtain 8: Bathtub 10: First heat source device 12: Second heat source device 14: Combustion chamber 16: Combustion fan 18: Partition wall 20: First combustion chamber 22: Second combustion chamber 24 : Exhaust port 26a : Burner 26b : Burner 26c : Burner 28 : Spark plug 29 : Igniter 30 : Flame rod 32 : Sensible heat exchanger 34 : Latent heat heat exchanger 36a : Gas branch path 36b : Gas branch path 36c : Gas branch Path 36d: Gas branch path 38a: On-off valve 38b: On-off valve 38c: On-off valve 38d: On-off valve 40: Burner 42: Spark plug 44: Flame rod 46: Sensible heat exchanger 48: Latent heat exchanger 50: Gas supply Channel 52: Open/close valve 54: Flow rate adjustment valve 55: Temperature fuse 56: Drain pan 58: Drain discharge channel 60: Neutralizer 61a: Water level electrode 61b: Water level electrode 62: Drain channel 64: Supply channel 66: Communication channel 68: Hot water supply Path 70 : Bypass path 72 : Bypass servo 74 : Water flow sensor 76 : Water flow servo 78 : Hot water supply high limit switch 80 : Heat exchanger outlet thermistor 82 : Hot water supply thermistor 84 : Heat exchanger water drain path 86 : Reheating outward path 88 : Circulation pump 90: Relay path 92: First switching valve 94: First bathtub circulation path 96: Circulation fitting 98: Connection path 100: Reheating return path 102: Second switching valve 104: Second bathtub circulation path 106: Water flow switch 108: Water level Sensor 110: Bathtub return thermistor 112: Reheating high limit switch 114: Bathtub return thermistor 116: Heat exchanger water drain path 118: Hot water filling path 120: Hot water filling control valve 122: Check valve 124: Check valve 126: Flow rate sensor 127: Overflow path 128: Atmospheric release valve 130: Back pressure path 132: Tank 133a: Water level electrode 133b: Water level electrode 133c: Water level electrode 138: Tank outward path 140: Tank return path 142: Gas supply path 144: Water volume servo 146: Pressurization Pump 148 : Pressure pump 150 : Check valve 152 : Gas control valve 154 : Communication path 160 : First control circuit board 162 : Second control circuit board 164 : Communication line 166 : Drain plug 168 : Drain plug 170 : Drain tap 172 : Drain tap 174 : Remote control 176 : Front plate 178 : Top plate 180 : Right plate 182 : Left plate 184 : Bottom plate 186 : Mounting plate

Claims (4)

a first heat source machine that heats water;
a water supply channel that sends water from a water supply source to the first heat source device;
a hot water supply path that sends water flowing out from the first heat source device to a hot water supply point;
a second heat source machine that heats water;
a circulation path for circulating water between the bathtub and the second heat source device;
a circulation pump provided in the circulation path;
a hot water supply path connecting the hot water supply path and the circulation path;
a hot water filling control valve provided in the hot water filling path;
A tank that dissolves gas in water;
a gas supply path that supplies the gas to the tank;
a gas control valve provided in the gas supply path;
a tank outbound route that sends water from the circulation route to the tank;
a tank return route that sends water from the tank to the circulation route;
a pressurizing pump provided on the tank outgoing path;
a control device that controls operations of the first heat source device, the second heat source device, the circulation pump, the hot water control valve, the gas control valve, and the pressure pump;
A casing that accommodates at least the first heat source device, the second heat source device, the circulation pump, the tank, the pressure pump, and the control device ,
The pressurizing pump is
a first pressurizing pump provided on the tank outgoing path;
A second pressurizing pump is provided in the tank outward path separately from the first pressurizing pump,
The first pressure pump and the second pressure pump are arranged such that the direction of the rotation axis of the first pressure pump is different from the direction of the rotation axis of the second pressure pump. Device. The first heat source device is
a combustor;
It is equipped with a latent heat exchanger that recovers latent heat of combustion gas generated in the combustor and heats water,
The bath device is housed in the casing and further includes a neutralizer that neutralizes drain generated in the latent heat exchanger,
Claim 1: When the bath device is installed and viewed from the front, the pressurizing pump is arranged on one side in the left-right direction, and the neutralizer is arranged on the other side in the left-right direction. bath equipment. The control device includes:
a first control device that controls operations of the first heat source device, the second heat source device, the circulation pump, and the hot water filling control valve;
a second control device that is provided separately from the first control device and controls the operation of the gas control valve and the pressurizing pump;
The bath device according to claim 1 or 2 , wherein the first control device and the second control device are connected to each other via a communication line. the tank is located near a lower end of the casing,
the tank return path is connected to a lower end of the tank,
The bath device according to any one of claims 1 to 3 , wherein the circulation path extends from the bottom surface of the casing toward the bathtub.

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