JPH0783501A - Bath equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To dissolve carbon dioxide in the hot water in the bathtub. [Composition] The hot water discharged from the circulation pump 20 is sent to the side of the bath 18 and is flown to the ejector 26. At this time, the suction action of the ejector 26 sucks and melts the combustion exhaust gas. The gas that cannot be dissolved is discharged from the gas-liquid separation tank 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath device for dissolving carbon dioxide in a bath.

[0002]

2. Description of the Related Art A hot water reforming apparatus of this type is conventionally shown in FIGS.
There was something like 0. That is, the bathtub 1 is provided with a low-pressure nozzle 2 and a high-pressure nozzle 3, and a circulation circuit 6 is piped from the circulation pump 4 through the switching means 5 to these nozzles, and from the discharge side 7 of the circulation pump 4 to the suction side. A branch circuit 9 is connected to 8. An ejector 10 is provided in the branch circuit, and a suction circuit 13 is connected to the negative pressure portion 11 of the ejector 10 from upstream of the opening / closing means 12 on the suction side of the circulation pump 4. Also, the negative pressure portion 11
An air circuit 16 provided with an air amount control means 14 and a check valve 15 is also connected to the. Reference numeral 17 is an air supply means for supplying gas to the low pressure nozzle 2.

The operation of the above configuration will be described with reference to FIG.
In, when the fine bubbles are generated, the circulation circuit 6 is switched to the high pressure nozzle 3 side, and the opening / closing means 12 is in the closed state. When the circulation pump 4 is operated in this state, the water discharged from the circulation pump flows into the circulation circuit 6 and the branch circuit 9
To the ejector 10, and at this time, the water in the bathtub 1 is sucked by the ejector 10 via the suction circuit 13 by the suction pressurizing action of the ejector 10, and the discharge side 7 of the circulation pump 4 becomes high pressure. At this time, when the air amount control means 14 is opened, air is sucked into the ejector 10, so that high-pressure water in which air is dissolved is sent to the discharge side of the circulation pump 4. High-pressure water flows to the high-pressure nozzle 3 via the circulation circuit,
The pressure is reduced by the high pressure nozzle 3. As a result, fine bubbles are generated in the bathtub 1 and the inside of the bathtub 1 becomes cloudy.

Next, the operation when large bubbles are generated will be described with reference to FIG. In FIG. 10, the circulation circuit 6 is switched to the low pressure nozzle 2 side, and the opening / closing means 12 is in the open state. When the circulation pump 4 is operated in this state, the water discharged from the circulation pump 4 flows into the circulation circuit 6 and the low pressure nozzle 2 to the bath 1
Erupted inside. At this time, air is sucked from the air supply means 17 and ejected into the bathtub 1 as large bubbles. (For example, Japanese Patent Publication No. 4-108449)

[0005]

However, in the above configuration, the air circuit 16 and the air supply means 17 are provided.
All the gas sucked from is discharged into the bath 1, and only the safe gas represented by air can be sucked and dissolved in the bath 1. When the suction amount of air increases, the circulation pump 4 bites the air, so that the suction amount of air cannot be increased. The present invention is intended to solve the above problems and has an object to dissolve carbon dioxide gas in exhaust gas of a combustor into hot water in a bath.

Another object of the present invention is to make it possible to dissolve gas in equipment having a low heat resistance of a heat exchanger of a combustor.

Further, the present invention is intended to dissolve carbon dioxide gas in the hot water of the bath at the time of filling and reheating the water in the bath.

The present invention is intended to dissolve carbon dioxide gas in hot water of a bath when it is not filled and reheated.

[0009]

In order to solve the above problems, the present invention solves the above problems by providing a bathtub, a large bubble jetting means and a fine bubble generating means provided in the bathtub, a circulation pump for circulating water in the bathtub, and a circulation pump. From the discharge side to the large bubble jetting means, the bath heat exchanger provided in the forward tube, the feed pipe from the discharge side of the circulation pump to the fine bubble generating means, and the water in the bathtub. A return pipe flowing to the suction side of the circulation pump, a bypass pipe arranged from the discharge side of the circulation pump to the suction side, and an ejector provided in the bypass pipe,
Bypass opening / closing means provided between the discharge side of the circulation pump and the ejector, bypass switching means provided between the suction side of the circulation pump and the ejector, and a second bypass provided from the bypass switching means to the suction side of the circulation pump. Pipe, a gas-liquid separation tank provided on the second bypass pipe, an opening / closing means provided between the gas-liquid separation tank and the suction side of the circulation pump, and a return pipe flow provided on the suction side of the circulation pump. Switching means for switching between the stop and circulation pump side and the suction part of the ejector, a suction pipe connected from the switching means to the suction part of the ejector, a hot water heat exchanger having hot water supply means to the gas-liquid separation tank, and hot water heat exchange And a gas supply means for sucking the exhaust gas of the container into the suction portion of the ejector.

In order to achieve the second object, the present invention provides a bathtub, a large bubble jetting means and a fine bubble generating means provided in the bathtub, a circulation pump for circulating water in the bathtub, and a circulation pump. A forward pipe from the discharge side to the large bubble jetting means, an opening / closing means provided on the forward pipe, a feed pipe from the discharge side of the circulation pump to the fine bubble generating means, and water in the bathtub of the circulation pump. Return pipe flowing to the suction side, bath heat exchanger provided in the return pipe, bypass pipe from the discharge side of the circulation pump to the suction side, ejector provided in the bypass pipe, discharge side of the circulation pump A bypass opening / closing means provided between the bypass pump and the ejector, a bypass switching means provided between the suction side of the circulation pump and the ejector, and a bypass switching means provided on the circulation pump suction side. A second bypass pipe, a gas-liquid separation tank provided in the second bypass pipe, an opening / closing means provided between the gas-liquid separation tank and the suction side of the circulation pump, and a return provided on the suction side of the circulation pump. Switching means for stopping the flow of the pipe and switching between the circulation pump side and the suction part of the ejector, a suction pipe piped from the switching means to the suction part of the ejector, and a hot water heat exchanger having hot water supply means to the gas-liquid separation tank The gas supply means for sucking the exhaust gas of the hot water supply heat exchanger into the suction portion of the ejector is provided.

Further, according to the present invention, a bathtub, a large bubble jetting means and a fine bubble generating means provided in the bathtub, a circulation pump for circulating the water in the bathtub, and a pipe from the discharge side of the circulation pump to the large bubble jetting means. A forward pipe, an opening / closing means provided on the forward pipe, a feed pipe connected from the discharge side of the circulation pump to the fine bubble generating means, a return pipe for flowing water in the bathtub to the suction side of the circulation pump, and a circulation pump. A bypass pipe from the discharge side to the suction side, an ejector provided on the bypass pipe, a bypass opening / closing means provided between the circulation pump discharge side and the ejector, and a circulation pump suction side and the ejector. Bypass switching means provided,
A second bypass pipe provided on the suction side of the circulation pump from the bypass switching means, a gas-liquid separation tank provided on the second bypass pipe, and an opening / closing provided between the gas-liquid separation tank and the suction side of the circulation pump. Means, switching means provided on the suction side of the circulation pump to stop the flow of the return pipe and switch between the circulation pump side and the suction portion of the ejector, and a suction pipe piped from the switching means to the suction portion of the ejector, A hot water heat exchanger having hot water supply means for the liquid separation tank, a bath heat exchanger for heating hot water in the bathtub,
The gas supply means for sucking the exhaust gas of the hot water supply heat exchanger and the bath heat exchanger into the suction portion of the ejector is provided.

The present invention is directed to a bathtub, a hot water supply source for supplying hot water to the bathtub, a bath heat source for heating the hot water in the bathtub, a dissolving means for dissolving at least carbon dioxide gas discharged from the hot water supply heat source into the bathtub, and a carbonate for the dissolving means. And a heat source for exclusive use of carbon dioxide provided to supply the gas.

[0013]

According to the present invention, when the hot water heat exchanger is filled into the bathtub, the exhaust gas discharged from the water heater is sucked and dissolved in the circulation circuit by the ejector, and the undissolved gas is exhausted downstream thereof. By doing so, the carbon dioxide gas is dissolved in the hot water of the bath.

Further, according to the present invention, a bath heat exchanger is provided on the return pipe side to the circulation pump to reduce the pressure acting on the bath heat exchanger.

Further, according to the present invention, by providing gas supply means to the ejector for the exhaust gas on the hot water supply heat exchanger side and the bath heat exchanger side, from the hot water supply heat exchanger side at the time of filling with hot water,
At the time of reheating, exhaust gas is sucked from the bath heat exchanger side to dissolve carbon dioxide.

According to the present invention, the exclusive heat source for dissolving the carbon dioxide gas is provided in addition to the hot water supply heat source and the bath heat source, so that the carbon dioxide gas is dissolved even during the time of filling with water and the time of reheating.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment corresponding to the first invention will be described below with reference to the accompanying drawings. 1 to 3, reference numeral 18 denotes a bathtub, and the bathtub 18 is provided with a large bubble jetting means 19. A circulation pump 20 is connected to the large bubble ejection means 19.
A discharge pipe 21 is provided with a forward pipe 22. A return pipe 24 is provided from the large bubble ejection means 19 to the suction side 23 of the circulation pump 20. Discharge side 21 of circulation pump 20
A bypass pipe 25 is connected from the suction side 23 to the suction side 23.
The bypass pipe 25 is provided with an ejector 26. A bypass opening / closing means 27 is provided between the discharge side 21 of the circulation pump 20 and the ejector 26.
A bypass switching means 28 is provided between the suction side 23 and the ejector 26. On the other hand, a second bypass pipe 29 is connected from the bypass switching means 28 to the suction side 23 of the circulation pump 20. The second bypass pipe 29 is provided with a gas-liquid separation tank 30 and an opening / closing means 31. A partition plate 32 and a water level detection means 33 for detecting the water level are provided in the gas-liquid separation tank 30. The return pipe 24 on the suction side 23 of the circulation pump 20 is provided with a switching means 34 and the switching means 34.
A suction pipe 36 is provided from the to the suction portion 35 of the ejector 26. The check valve 3 is provided in the suction portion 35 of the ejector 26.
7, a gas supply means 40 including an opening / closing valve 38 and a governor 39
Is piped. Reference numeral 41 is an air supply means for sending air to the large bubble jetting means 19, and an opening / closing valve 42 is provided. Further, a feed pipe 46 is provided from the outflow pipe 22 to the fine bubble generating means 43 via a check valve 44 and a tank 45. An on-off valve 47 is provided in the outflow pipe 22. A pouring pipe 50 is connected to the gas-liquid separation tank 30 from the outlet of the hot water supply heat exchanger 48 via an opening / closing valve 49. Reference numeral 51 indicates a burner. A suction pipe 52 for sucking the exhaust gas of the hot water supply heat exchanger 48 is connected to the gas supply means 40 through an opening / closing valve 53. Reference numeral 54 is a bath heat exchanger provided in the outflow pipe 22, and 55 is a burner. 56 is an arrow indicating a flow.

Next, the operation of the present invention will be described. Figure 1
The operation of dissolving carbon dioxide gas when filling the bathtub 18 will be described. When the on-off valve 49 is opened in the state of FIG. 1, the hot water that has passed through the hot water heat exchanger 48 and heated by the burner 51 flows through the pouring pipe 50 and is supplied to the gas-liquid separation tank 30. When the hot water is supplied to the gas-liquid separation tank 30 and the water level detection means 33 is turned on, the circulation pump 20 is operated. When the circulation pump 20 is operated, the hot water discharged flows through the outflow pipe 22 and is ejected from the large bubble ejecting means 19 to the bathtub 18 and also flows through the feed pipe 46 and from the large bubble ejecting means 19 through the fine bubble generating means 43. Erupted. The circulation pump 20
The hot water spouted from also flows to the bypass pipe 25 side. The hot water flowing to the side of the bypass pipe 25 flows to the ejector 26 and the bypass switching means 28, and the downstream from the bypass switching means 28 flows through the second bypass pipe 29 provided with the gas-liquid separation tank 30 and the opening / closing means 31 and the circulation pump 20. Return to. At this time, when the open / close valve 53 is opened, the exhaust gas of the burner 51 that heats the hot water supply heat exchanger 48 is sucked by the ejector 26 via the suction pipe 52 and the gas supply means 40 by the suction action of the ejector 26. Of the sucked exhaust gas, carbon dioxide gas is dissolved in hot water in the ejector. Unnecessary exhaust gas that is not dissolved is discharged to the outside by the gas-liquid separation tank 30. In this way, the carbon dioxide gas in the combustion exhaust gas can be dissolved when filling the bathtub 18.

Next, the operation of fine bubble bubbles will be described with reference to FIG. The fine bubble generating means 43 has a flow passage of a small area, and the burners 51 and 55 are in a non-combustion state. In FIG. 2, when the circulation pump 20 is operated, the discharged hot water flows to the bypass pipe 25 side. The hot water flowing to the bypass pipe 25 side flows to the ejector 26 and the bypass switching means 28, and returns from the bypass pipe 28 to the circulation pump 20. The hot water discharged from the circulation pump 20 is the feed pipe 4
The 6 side also flows and is ejected from the fine bubble generating means into the bath 18. On the other hand, the hot water flowing from the bathtub 18 through the return pipe 24 flows through the suction pipe 36 from the switching means 34 and then flows into the suction portion 35 of the ejector 26. During this operation, the pressure on the discharge side 21 of the circulation pump 20 is high due to the suction pressurizing action of the ejector 26. At this time, when the opening / closing valve 38 of the gas supply means 40 is opened, the suction action of the ejector 26 causes air to be sucked into the ejector 26 from the suction portion 35 of the ejector 26. The sucked air is melted under pressure in the ejector 26 and the circulation pump 20. That is, from the circulation pump 20, high-pressure hot water in which air is dissolved is generated by the fine bubble generating means 43.
And is rapidly depressurized from the flow path having a minute area of the fine bubble generating means and ejected into the bathtub 18,
The inside of 8 is a fine bubble and becomes cloudy.

Next, the large bubble operation will be described with reference to FIG. When the circulation pump 20 is operated, the discharged hot water flows through the outflow pipe 22 and the feed pipe 46 and from the large bubble jetting means 19 to the bathtub 1.
Erupted to 8. At this time, by opening the on-off valve 42, the air is supplied through the air supply means 41 so that the large bubble ejecting means 1 is ejected.
The water flow mixed with bubbles is ejected from the large bubble ejecting means 19. The hot water in the bathtub 18 flows to the circulation pump 20 via the return pipe 24 and the switching means 34. In this operation, the hot water discharged from the circulation pump 20 does not flow to the ejector 26 side.

Next, a second embodiment corresponding to the second invention will be described with reference to FIGS. Reference numeral 57 is a bath heat exchanger, and 58 is a burner. Other configurations are similar to those in FIG. 1, and description thereof will be omitted.

Next, the operation of the present invention will be described. Figure 4
The operation of dissolving carbon dioxide gas when filling the bathtub 18 will be described. When the on-off valve 49 is opened in the state of FIG. 4, the hot water which has passed through the hot water heat exchanger 48 and heated by the burner 51 flows through the pouring pipe 50 and is supplied to the gas-liquid separation tank 30. When the hot water is supplied to the gas-liquid separation tank 30 and the water level detection means 33 is turned on, the circulation pump 20 is operated. When the circulation pump 20 is operated, the hot water discharged flows through the outflow pipe 22 and is ejected from the large bubble ejecting means 19 to the bathtub 18 and also flows through the feed pipe 46 and from the large bubble ejecting means 19 through the fine bubble generating means 43. Erupted. The circulation pump 20
The hot water spouted from also flows to the bypass pipe 25 side. The hot water flowing to the side of the bypass pipe 25 flows to the ejector 26 and the bypass switching means 28, and the downstream from the bypass switching means 28 flows through the second bypass pipe 29 provided with the gas-liquid separation tank 30 and the opening / closing means 31 and the circulation pump 20. Return to. At this time, when the on-off valve 53 is opened, the exhaust gas of the hot water supply heat exchanger 48 no burner 51 is sucked into the ejector 26 via the suction pipe 52 and the gas supply means 40 by the suction action of the ejector 26. Of the sucked exhaust gas, carbon dioxide gas is dissolved in the hot water in the ejector 26. Unnecessary exhaust gas that is not dissolved is discharged to the outside by the gas-liquid separation tank 30. In this way, the carbon dioxide gas in the combustion exhaust gas can be dissolved when filling the bathtub 18.

Next, the operation of fine bubble bubbles will be described with reference to FIG. The fine bubble generating means 43 has a flow passage of a small area, and the burners 51 and 58 are in a non-combustion state. In FIG. 5, when the circulation pump 20 is operated, the discharged hot water flows to the bypass pipe 25 side. The hot water flowing to the side of the bypass pipe 25 flows to the ejector 26 and the bypass switching means 28, and returns from the bypass pipe 25 to the circulation pump 20. The hot water discharged from the circulation pump 20 is the feed pipe 4
The 6 side also flows and is ejected from the fine bubble generating means into the bath 18. On the other hand, the hot water flowing from the bathtub 18 through the return pipe 24 flows through the suction pipe 36 from the switching means 34 and then flows into the suction portion 35 of the ejector 26. During this operation, the pressure on the discharge side 21 of the circulation pump 20 is high due to the suction pressurizing action of the ejector 26. At this time, when the opening / closing valve 38 of the gas supply means 40 is opened, the suction action of the ejector 26 causes air to be sucked into the ejector 26 from the suction portion 35 of the ejector 26. The sucked air is melted under pressure in the ejector 26 and the circulation pump 20. That is, from the circulation pump 20, high-pressure hot water in which air is dissolved is generated by the fine bubble generating means 43.
And is rapidly depressurized from the flow path having a minute area of the fine bubble generating means and ejected into the bathtub 18,
The inside of 8 is a fine bubble and becomes cloudy.

Next, the large bubble operation will be described with reference to FIG. When the circulation pump 20 is operated, the discharged hot water flows through the outflow pipe 22 and the feed pipe 46 and from the large bubble jetting means 19 to the bathtub 1.
Erupted to 8. At this time, by opening the on-off valve 42, the air is supplied through the air supply means 41 so that the large bubble ejecting means 1 is ejected.
The water flow mixed with bubbles is ejected from the large bubble ejecting means 19. The hot water in the bathtub 18 flows to the circulation pump 20 via the return pipe 24 and the switching means 34. In this operation, the hot water discharged from the circulation pump 20 does not flow to the ejector 26 side.

Next, a third embodiment corresponding to the third invention will be described with reference to FIG. Reference numeral 59 is a suction pipe provided with an opening / closing valve 60. Other configurations are similar to those in FIG. 1, and description thereof will be omitted.

Next, the operation of the present invention will be described. Figure 7
The operation of dissolving carbon dioxide gas when reheating the hot water in the bathtub 18 will be described. When the circulation pump 20 is operated in the state shown in FIG. 7, the hot water discharged is the outflow pipe 22, the bath heat exchanger 54.
And is jetted from the large bubble jetting means 19 to the bathtub 18.
At this time, the burner 55 starts combustion and becomes the additional heating operation. The hot water also flows into the feed pipe 46, passes through the fine bubble generating means 43, and is ejected from the large bubble ejecting means 19. On the other hand, the hot water ejected from the circulation pump 20 also flows to the bypass pipe 25 side. The hot water flowing to the side of the bypass pipe 25 flows to the ejector 26 and the bypass switching means 28, and the downstream from the bypass switching means 28 flows through the second bypass pipe 29 provided with the gas-liquid separation tank 30 and the opening / closing means 31 and the circulation pump 20. Return to. At this time, when the opening / closing valve 60 is opened, the bath heat exchanger 5
The exhaust gas of the burner 55 of No. 4 is sucked into the ejector 26 through the suction pipe 59 and the gas supply means 40 by the suction action of the ejector 26. Of the sucked exhaust gas, carbon dioxide gas is dissolved in hot water in the ejector. Unnecessary exhaust gas that is not dissolved is discharged to the outside by the gas-liquid separation tank 30. In this way, the carbon dioxide gas in the combustion exhaust gas can be dissolved when the bath 18 is reheated. The operation of filling the bathtub 18 with hot water is the same as that shown in FIG.

Next, a fourth embodiment corresponding to the fourth invention will be described with reference to FIG. Reference numeral 61 is a burner provided to dissolve carbon dioxide gas. Other configurations are similar to those in FIG. 1, and description thereof will be omitted.

Next, the operation of the present invention will be described. Figure 8
The operation of dissolving carbon dioxide gas in the hot water of the bathtub 18 will be described. When the circulation pump 20 is operated in the state of FIG. 8, the discharged hot water flows through the outflow pipe 22 and is jetted from the large bubble jetting means 19 to the bathtub 18. At this time, the burner 61 starts burning. The hot water also flows into the feed pipe 46, passes through the fine bubble generating means 43, and is ejected from the large bubble ejecting means 19. On the other hand, the hot water ejected from the circulation pump 20 also flows to the bypass pipe 25 side. The hot water flowing to the side of the bypass pipe 25 flows to the ejector 26 and the bypass switching means 28, and the downstream from the bypass switching means 28 flows through the second bypass pipe 29 provided with the gas-liquid separation tank 30 and the opening / closing means 31 and the circulation pump 20. Return to. At this time, when the opening / closing valve 53 is opened, the exhaust gas of the burner 61 is sucked by the ejector 26 through the suction pipe 52 and the gas supply means 40 by the suction action of the ejector 26. Of the exhaust gas that is sucked in,
Carbon dioxide is dissolved in hot water in the ejector. Unnecessary exhaust gas that is not dissolved is discharged to the outside by the gas-liquid separation tank 30. In this way, carbon dioxide gas in the combustion exhaust gas can be dissolved in the bath 18.

[0029]

As described above, according to the bath device of the present invention, the following effects can be obtained.

According to the first aspect of the present invention, the carbon dioxide gas can be dissolved when the bath water is filled by sucking the combustion exhaust gas. Further, since the sucked undissolved gas is discharged on the upstream side of the circulation pump, the circulation pump can perform stable operation without being bitten by air.

According to the second aspect of the present invention, by providing the bath heat exchanger on the suction side of the circulation pump, the bath heat exchanger is placed at a position where the pressure is low. It can be used and the cost can be reduced.

According to the third aspect of the invention, the carbon dioxide gas can be dissolved when the bath is filled with water and when the water is reheated.

According to the invention described in claim 4, carbon dioxide gas can be arbitrarily dissolved in the bath during normal bathing.

[Brief description of drawings]

FIG. 1 is a system configuration diagram showing an operation during filling of a bath apparatus according to a first embodiment of the present invention.

FIG. 2 is a system configuration diagram showing a fine bubble generating operation of the device.

FIG. 3 is a system configuration diagram showing a large bubble operation of the device.

FIG. 4 is a system configuration diagram showing an operation during filling of a bath apparatus according to a second embodiment of the present invention.

FIG. 5 is a system configuration diagram showing a fine bubble generating operation of the device.

FIG. 6 is a system configuration diagram showing a large bubble operation of the device.

FIG. 7 is a system configuration diagram showing an operation during reheating of the bath device according to the third embodiment of the present invention.

FIG. 8 is a system configuration diagram showing when a carbon dioxide gas is dissolved in the bath apparatus according to the fourth embodiment of the present invention.

FIG. 9 is a system configuration diagram showing an operation during gas dissolution in a conventional bath device.

FIG. 10 is a system configuration diagram showing the operation of the apparatus when a large bubble is ejected.

[Explanation of symbols]

 18 Bathtub 19 Large Bubble Generating Means 20 Circulation Pump 21 Discharge Side 22 Outgoing Pipe 23 Suction Side 24 Return Pipe 25 Bypass Pipe 26 Ejector 27 Bypass Opening / Closing Means 28 Bypass Switching Means 29 Second Bypass Pipe 30 Gas-Liquid Separation Tank 31 Opening / Closing Means 34 Switching means 36 Suction tube 40 Gas supply means 43 Fine air bubble generation means 46 Feed tube 48 Hot water heat exchanger 54 Bath heat exchanger

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiya Watanabe 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (4)

[Claims] 1. A bathtub, a large bubble jetting means and a fine bubble generating means provided in the bathtub, a circulation pump for circulating water in the bathtub, and a pipe from the discharge side of the circulation pump to the large bubble jetting means. Forward pipe, a bath heat exchanger provided in the forward pipe, a feed pipe piped from the discharge side of the circulation pump to the fine bubble generating means, and a suction side of the circulation pump for water in the bath. Return pipe, a bypass pipe from the discharge side of the circulation pump to the suction side, an ejector provided on the bypass pipe, and a bypass opening / closing means provided between the discharge side of the circulation pump and the ejector. A bypass switching means provided between the suction side of the circulation pump and the ejector; and a second switching means provided on the circulation pump suction side from the bypass switching means. A bypass pipe, a gas-liquid separation tank provided in the second bypass pipe, an opening / closing means provided between the gas-liquid separation tank and the suction side of the circulation pump, and a suction side of the circulation pump. Switching means for stopping the flow of the return pipe and switching between the circulation pump side and the suction portion of the ejector, and a suction pipe piped from the switching means to the suction portion of the ejector,
A bath apparatus comprising a hot water supply heat exchanger having hot water supply means for the gas-liquid separation tank, and a gas supply means for sucking exhaust gas of the hot water supply heat exchanger into a suction portion of the ejector. 2. A bathtub, a large bubble jetting means and a fine bubble generating means provided in the bathtub, a circulation pump for circulating water in the bathtub, and a pipe from the discharge side of the circulation pump to the large bubble jetting means. Forward pipe, an opening / closing means provided in the forward pipe, a feed pipe connected from the discharge side of the circulation pump to the fine bubble generating means, and the water in the bathtub to the suction side of the circulation pump. A return pipe, a bath heat exchanger provided in the return pipe, a bypass pipe provided from the discharge side of the circulation pump to the suction side, an ejector provided in the bypass pipe, and a discharge side of the circulation pump. A bypass opening / closing means provided between the ejector and the ejector; a bypass switching means provided between the suction side of the circulation pump and the ejector; A second bypass pipe provided on the pump suction side, a gas-liquid separation tank provided on the second bypass pipe, and an opening / closing means provided between the gas-liquid separation tank and the suction side of the circulation pump. Switching means provided on the suction side of the circulation pump for stopping the flow of the return pipe and switching between the circulation pump side and the suction portion of the ejector; and a suction pipe piped from the switching means to the suction portion of the ejector. A bath apparatus comprising a hot water supply heat exchanger having hot water supply means for the gas-liquid separation tank, and gas supply means for sucking exhaust gas of the hot water supply heat exchanger into a suction portion of the ejector. 3. A bathtub, a large bubble jetting means and a fine bubble generating means provided in the bathtub, a circulation pump for circulating the water in the bathtub, and a pipe from the discharge side of the circulation pump to the large bubble jetting means. Forward pipe, an opening / closing means provided in the forward pipe, a feed pipe connected from the discharge side of the circulation pump to the fine bubble generating means, and the water in the bathtub to the suction side of the circulation pump. A return pipe, a bypass pipe from the discharge side of the circulation pump to the suction side, an ejector provided in the bypass pipe, a bypass opening / closing means provided between the discharge side of the circulation pump and the ejector, Bypass switching means provided between the suction side of the circulation pump and the ejector, and a second valve provided on the circulation pump suction side from the bypass switching means. A pass pipe, a gas-liquid separation tank provided in the second bypass pipe, an opening / closing means provided between the gas-liquid separation tank and the suction side of the circulation pump, and a suction side of the circulation pump. Switching means for stopping the flow of the return pipe and switching between the circulation pump side and the suction portion of the ejector, and a suction pipe piped from the switching means to the suction portion of the ejector,
A hot-water supply heat exchanger having hot-water supply means for the gas-liquid separation tank, a bath heat exchanger for heating hot water in the bathtub, a hot-water supply heat exchanger and exhaust gas of the bath heat exchanger for a suction portion of the ejector Bath equipment consisting of gas supply means for sucking into. 4. A bathtub and a hot water source for supplying hot water to the bathtub,
From a bath heat source for heating the hot water in the bathtub, a dissolving means for dissolving at least carbon dioxide gas discharged from the hot water supply heat source in the bathtub, and a heat source for exclusive use of carbon dioxide gas provided to supply the carbon dioxide gas to the dissolving means Bath equipment.