JP3979401B2 - Bubble generation bathtub - Google Patents

Description

  The present invention relates to a bubble generating bathtub provided with a jet bath device and a fine bubble generating device.

In recent years, a fine bubble generator has been installed in the bathtub alone, and the air is dissolved in the bath water sucked from the bathtub and the dissolved water is discharged into the bathtub to generate fine bubbles in the bathtub. A bubble generating bathtub is provided. (For example, see Patent Document 1)
In addition, a bathtub provided with a jet bath device that is provided with a jet bath device alone in the bathtub and in which bubbled bath water in which air is entrained in the bath water sucked from the bathtub is blown into the bathtub is also known. ing. (For example, see Patent Document 2)
JP 2002-330885 A JP 2003-61848 A

  However, in any of the conventional examples, since the air in the atmosphere is blown into the bath water as bubbles or is generated as fine bubbles in the bath, the thermal effect is obtained. The air (oxygen concentration 21%) is only supplied in the form of bubbles, so the comfort level and the burden on the cardiopulmonary function have not been reduced significantly.

  The present invention has been invented in view of the above-described conventional problems, and supplies high oxygen concentration air to a bather in a bathtub so that fatigue recovery, thermal effect, and easy breathing can be achieved. It makes it possible to have a comfortable bathing, and it is simple and inexpensive. When high oxygen concentration air is discharged, even if the bath water is full, the foamy bath water will continue to overflow and become unsightly or make noise. It is an object of the present invention to provide a bubble generating bathtub that can be prevented.

  In order to solve the above-mentioned problem, the invention described in claim 1 generates fine bubbles by dissolving air in the bath water sucked from the bathtub 1 and discharging the bath water in which the air is dissolved into the bathtub 1. Bubble generation comprising a fine bubble generating device A and a jet bath device B that entrains the air taken in from the air intake port 5 into the bath water sucked from the bathtub 1 and jets the entrained bath water into the bathtub 1 In the bathtub, an oxygen enricher 3 that generates air having a high oxygen concentration is provided, the supply path 4 that supplies the high oxygen concentration air is branched into two, and one branch path 4a is connected to the fine bubble generator A. While connecting to the ejector unit 10, the other branch path 4 b communicates with the air intake port 5 of the jet bath apparatus B, and the air intake port 5 is disposed so as to protrude above the upper end surface of the bathtub 1. During the operation of the jet bath apparatus B, the normal air in the bathroom 6 and the air having a high oxygen concentration can be mixed inside the air intake port 5 and supplied to the ejector section 20 of the jet bath apparatus B. During operation, a part of the high oxygen concentration air from the oxygen enrichment device 3 is supplied to the ejector unit 10 of the fine bubble generator A and the remaining high oxygen concentration air is supplied to the air intake port 5 of the jet bath device B. It is possible to discharge into the bathroom 6 through.

  By adopting such a configuration, the jet bath apparatus B is operated in the common bathtub 1 and bubbled bath water in which air is engulfed in the bath water sucked from the bathtub 1 is jetted into the bathtub 1 or It is possible to generate fine bubbles in the bathtub 1 by operating the fine bubble generator A and pressurizing and depressurizing the bath water containing the air that is taken in the bath water sucked from the bathtub 1. Of course, when the microbubble generator A is operated to generate microbubbles in the bathtub 1, high oxygen concentration air (enriched oxygen) generated by the oxygen enricher 3 is generated as microbubbles. The body part soaked in the bathing water during bathing can breathe through the skin, increase the comfort of bathing, reduce the burden of cardiopulmonary function during bathing, and recover from fatigue Soak in the bath water It is the activation of the skin. In addition, in this case, since high concentration oxygen can be supplied into the bathroom 6 from the air intake port 5 that also serves as the enriched oxygen supply port, the oxygen concentration in the space in the bathroom 6 is increased, and the bath water is higher than the bath water during bathing. If you breathe in air with high oxygen concentration directly from your nose or mouth, or you can breathe high oxygen concentration directly from your nose or mouth when you wash your body You can bathe and wash comfortably. On the other hand, when the jet bath apparatus B is operated and bubbles are mixed and ejected into the bathtub 1, high oxygen concentration air generated in the oxygen enricher 3 is mixed with normal air in the bathroom 6 to form bubbles. Since it can be supplied into the bathtub 1, relatively large bubbles rise to the surface of the water and are released into the air as oxygen-enriched air near the bather's face. Effectively supplying air with high oxygen concentration makes lung breathing easier. Moreover, since the fine bubble generator A is not in operation during the operation of the jet bath apparatus B, all of the air having a high oxygen concentration is mixed with normal air taken in from the air intake port 5 provided in the upper end surface of the bathtub 1. Then, since the air intake port 5 of the jet bath apparatus B can be shared as the enriched oxygen supply port of the oxygen enricher 3, the enriched oxygen supply to the bathtub 1 is supplied as bubbles. There is no need to provide a separate port, and air of high oxygen concentration can be supplied into the bathroom 6 while simplifying the piping of the bathtub 1, and the air intake port 5 protrudes above the upper end surface of the bathtub 1. Therefore, even when the bath water in the bathtub 1 is full, when the fine bubble generating device A is in operation, it overflows from the air intake port 5 of the jet bath device B so that high oxygen concentration bubbles with water. Or, those that do not or generate noise.

  The invention described in claim 2 is a microbubble generator A for generating microbubbles by dissolving air in bath water sucked from the bathtub 1 and discharging bath water in which air is dissolved into the bathtub 1. In a bubble generating tub provided with a jet bath apparatus B that entrains the air taken in from the air intake port 5 into the bath water sucked from the bathtub 1 and jets the entrained bath water into the bathtub 1. The oxygen enrichment device 3 for generating a large amount of air is provided, the supply path 4 for supplying the air with the high oxygen concentration is branched into two, and one branch path 4a is connected to the ejector section 10 of the microbubble generator A. At the same time, the other branch path 4b is connected to the enriched oxygen supply port 2 opened in the bathroom 6, and the enriched oxygen supply port 2 is disposed so as to protrude above the upper end surface portion of the bathtub 1 and this enriched oxygen Supply port 2 The air intake port 5 of the jet bath device B is arranged in the vicinity, and the high oxygen concentration air discharged from the enriched oxygen supply port 2 during operation of the jet bath device B is sucked into the air intake port 5 together with the normal air in the bathroom 6. Can be supplied to the ejector section 20 of the jet bath apparatus B, and a part of the high oxygen concentration air from the oxygen enricher 3 is supplied to the ejector section 10 of the fine bubble generator A during operation of the fine bubble generator A. In addition, it is characterized in that the remainder of the air with a high oxygen concentration can be discharged into the bathroom 6 through the enriched oxygen supply port 2.

  By adopting such a configuration, in addition to the effect of claim 1, the air intake port 5 of the jet bath device B and the enriched oxygen supply port 2 of the oxygen enrichment device 3 are separated and enriched. Since the oxygen supply port 2 is disposed so as to protrude upward from the upper end surface portion of the bathtub 1, even when the bath water in the bathtub 1 is full, the oxygen is higher than the enriched oxygen supply port 2 when the microbubble generator A is in operation. Concentration air does not overflow with water and does not generate abnormal noise.

  As described above, the present invention supplies high oxygen concentration air from the oxygen enrichment device to the fine bubble generating device, thereby dissolving the high oxygen concentration air to generate fine bubbles and Promotes skin respiration in the bathed area, increases the comfort level of bathing, reduces the burden of cardiopulmonary function, relieves fatigue, activates the skin, and operates the microbubble generator Since high oxygen concentration air is supplied into the bathroom from the air intake port, the oxygen concentration of the space in the bathroom becomes high, and the oxygen concentration air directly from the nose and mouth that is above the bath water during bathing You can breathe air with high oxygen concentration directly from your nose and mouth even when you wash your body or wash your body in the washroom, making lung breathing easier and more comfortable bathing and washing operations. When the jet bath device is operated and bubbles are mixed and jetted into the bathtub, high oxygen concentration air can be mixed with the air taken in from the air intake port and supplied as bubbles into the bathtub. As the water rises to the surface of the water, high oxygen concentration air is effectively released near the bather's face, and during the bathing, high oxygen concentration air is supplied near the nose and mouth to ease lung breathing and comfort. You can take a bath. Furthermore, even when the bath water in the bathtub is full, high oxygen concentration air overflows from the air intake port of the jet bath device so that it bubbles with water when the microbubble generator is in operation, or noise is generated. It does not cause discomfort to bathers.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  A bathtub 1 is installed on a floor such as a waterproof floor pan at the bottom of the bathroom 6 such as a unit bathroom. In the bathtub 1, bath water sucked from the bathtub 1 as shown in FIG. Pressurizes and depressurizes the bubbled bath water containing air, and generates a fine bubble in the bathtub 1, and a bubbled bath water containing air in the bath water sucked from the bathtub 1. And a jet bath device B for jetting the water into the bathtub 1.

  As shown in FIG. 7, the fine bubble generating apparatus A includes a suction port 7, a discharge port 8, a circulation pipe 9, an ejector unit 10 constituting an air intake unit, a circulation pump 11, a dissolution tank 12, The main body is composed. The suction port 7 is provided in the lower part or the bottom part of the bathtub 1 and sucks the bath water in the bathtub 1. Moreover, the discharge port 8 is provided in the lower part or bottom part of the bathtub 1, and discharges the bath water containing the fine bubble in the bathtub 1. FIG. The suction port 7 and the discharge port 8 are communicated with each other by a circulation line 9 piped outside the bathtub 1, and a circulation pump 11 is arranged in the middle of the circulation line 9 to drive the circulation pump 11. Thus, bath water is sucked from the suction port 7 and discharged from the discharge port 8. In addition, an ejector section 10 is provided in the circulation line 9 so as to be positioned between the suction port 7 and the circulation pump 11, and air is sucked when bath water passes through the ejector section 10 by driving the circulation pump 11. Air is mixed into the bath water. A dissolution tank 12 is disposed in the circulation line 9 between the circulation pump 11 and the discharge port 8 so that the air mixed in the ejector unit 10 is dissolved in the bath water. In this dissolution tank 12, the bath water is passed through a meandering path so that air is dissolved in the bath water, and the discharge port 8 discharges the bath water in which the air is dissolved under reduced pressure, The dissolved air becomes fine bubbles, and bath water containing fine bubbles is discharged, so that the bath water can be bathed in a so-called milky shape.

  As shown in FIG. 6, the jet bath apparatus B is mainly composed of a suction port 13, a jet port 14, a circulation pipe 15, a jet pump 17, and an air intake port 5. A suction port 13 is provided on the side wall or bottom of the bathtub 1, and bath water in the bathtub 1 is sucked from the suction port 13. Moreover, the jet nozzle 14 is provided in the side wall or bottom part of the bathtub 1, and the bath water containing the comparatively big bubble is jetted in the bathtub 1 from this jet nozzle. The suction port 13 and the jet port 14 are communicated with each other through a circulation line 15, and a jet pump 17 is disposed in the middle of the circulation line 15. The jet pump 17 is driven to suck in from the suction port 13. The bath water is strongly ejected from the spout 14. The flange 18 which is the upper end surface portion of the bathtub 1 is provided with an air intake port 5 so as to protrude upward from the flange 18. The air intake port 5 and the jet port 14 are communicated with each other by a jet pipe path 16. It is. Here, the ejection port 14 is provided with an ejector portion 20, and air taken in from the air intake port 5 is ejected into the bath water by the ejector action by ejecting bath water from the ejection port 14, and contains relatively large bubbles. The bath water is jetted into the bathtub 1.

  Here, in the present invention, in addition to the fine bubble generating device A and the jet bath device B, an oxygen enriching device 3 for supplying high oxygen concentration air (enriched oxygen) is provided.

  The oxygen enrichment device 3 is installed on the ceiling of the bathroom 6, for example. This oxygen enrichment apparatus 3 is mainly composed of an oxygen enriched film and a vacuum pump, and the air enriched by introducing air in the atmosphere with the vacuum pump and passing the air through the oxygen enriched film. It is possible to obtain air having a high oxygen concentration (that is, enriched oxygen). When passing air through the oxygen-enriched membrane, oxygen and nitrogen decelerate, but oxygen passes at a rate approximately 2.5 times that of nitrogen. As a result, normal air in the atmosphere was 78% nitrogen and 21% oxygen, but the oxygen-enriched film turns the air 69% nitrogen and 30% oxygen, and air with a high oxygen concentration is obtained. .

  The oxygen enricher 3 is provided with a supply path 4 for supplying the generated high oxygen concentration air, and the supply path 4 is branched into two branch paths 4a and 4b. One branch path 4a communicates with the ejector section 10 of the fine bubble generating device A, and the other branch path 4b communicates with the air intake port 5 of the jet bath apparatus B. In the present invention, the air intake port 5 is shared as the enriched oxygen supply port.

  Furthermore, in the present invention, as shown in FIG. 1, the air intake port 5 of the jet bath apparatus B is disposed so as to protrude above the flange 18 of the bathtub 1. In the example of FIG. 1, the fitting cylinder portion 31 of the cap 32 is fitted into the hole portion drilled in the flange 18. An air intake port 5 is formed in the center side of the upper lid 30 of the cap 32, and the air intake port 5 communicates with the jet pipe path 16 via the fitting cylinder portion 31. The outer peripheral end 31 a of the upper lid 30 is in contact with the upper surface of the flange 18 without a gap. Further, below the air intake 5, a tip opening 4 c of the branch path 4 b of the oxygen enricher 3 is opened upward. When the microbubble generator A is in operation, high oxygen concentration air is discharged into the bathroom 6 through the air inlet 5 from the tip opening 4c. Further, in this example, the outer diameter size of the tip opening 4c of the branch path 4b of the oxygen enrichment device 3 is set smaller than the inner diameter size of the fitting cylinder portion 31, whereby air sucked from the air intake port 5 is set. So that the mixed airflow of air and high oxygen concentration air is sucked into the jet pipe path 16 connected to the joint member 40 through the gap 33 between the outer peripheral surface of the branch path 4 b and the inner peripheral surface of the fitting cylinder portion 31. It has become.

  The jet bath device B, the fine bubble generating device A, and the oxygen enrichment device 3 are controlled by a control signal from the control unit, and by operating an operation switch that operates the jet bath device B. The jet bubble device B is operated (in this case, the fine bubble generating device A is not operated), and the fine bubble generating device A is operated by operating an operation switch for operating the fine bubble generating device A. (In this case, the jet bath apparatus B is not operated). The jet bath device B and the fine bubble generating device A are selectively operated, and when the fine bubble generating device A is operated, in any case of operating the jet bath device B, The oxygen enricher 3 is operated simultaneously.

  Thus, when the microbubble generator A is operated, the oxygen enrichment device 3 is operated, and the bath water in the bathtub 1 is sucked from the suction port 7, and the bath water passes through the ejector unit 10, so that the high oxygen concentration. Is mixed into the bath water from the branch path 4a, and the bath water mixed with the high oxygen concentration air is sent to the dissolution tank 12, so that the high oxygen concentration air is dissolved in the bath water, and the high oxygen concentration air is dissolved. The bath water in which the air is dissolved is discharged from the discharge port 8 under reduced pressure, so that the bath water containing fine bubbles having a high oxygen concentration is discharged in a milky shape. As a result, the portion immersed in the bath water of the bather 1 of the bather is encased in fine bubbles of high oxygen concentration, and a thermal effect is obtained, and is encased in fine bubbles of high oxygen concentration air. Therefore, the skin breathing of the bather can be promoted, thereby increasing the comfort level of the bather and reducing the burden of the cardiopulmonary function, and also recovering from fatigue (the action of lactic acid in the muscle being decomposed by oxygen is promoted) The skin is activated.

  Here, the flow rate of the high oxygen concentration air supplied from the oxygen enricher 3 is larger than the flow rate used in the fine bubble generator A, and the excess high oxygen concentration air is indicated by an arrow F in FIG. As described above, it floats near the face of the person bathing in the bathtub 1 from the air intake port 5 of the jet bath apparatus B via the branch path 4b, so that the lung breathing can be more effectively facilitated. Furthermore, since it gradually diffuses into the bathroom 6 to increase the oxygen concentration in the bathroom 6, even when the body is washed at the washing place, air with a high oxygen concentration is supplied, making it easier to breathe through the lungs. Will be able to. Furthermore, since the air intake port 5 which also serves as the enriched oxygen supply port is disposed so as to protrude above the flange 18 of the bathtub 1, bath water enters the air intake port 5 even when the bathtub 1 is full. The bath water and the air with high oxygen concentration are not mixed. Therefore, air does not overflow from the air intake port 5 provided in the flange 18 of the bathtub 1 so as to foam together with the bath water or generate an abnormal noise. When the air overflows from the mouth 5 so as to foam together with the bath water, the bather becomes anxious about whether or not he / she has broken down. However, the bather can comfortably bathe without feeling such anxiety.

  Incidentally, during operation of the fine bubble generator A, air having a high oxygen concentration of 2 liter / min is supplied from the oxygen enricher 3, and a high oxygen concentration of 0.5 liter / min is supplied to the fine bubble generator A. Further, since no negative pressure is generated in the jet pipe path 16, air having a high oxygen concentration of 1.5 liter / min is supplied into the bathroom 6 from the air intake port 5. The amount of air with a high oxygen concentration supplied from the oxygen enricher 3 is 2 liters / min, and may be 3 liters / min, for example.

  On the other hand, when the jet bath apparatus B is operated and the oxygen enrichment apparatus 3 is operated, the bath water in the bathtub 1 is sucked from the suction port 13, and the bath water is ejected from the jet outlet 14 via the jet pump 17. However, when bath water is ejected from the ejection port 14, air is taken in from the air intake port 5 and supplied to the ejector unit 20 provided in the ejection port 14. At this time, since a negative pressure is generated in the direction indicated by the arrow Z in the jet pipe path 16, the high oxygen concentration air generated by the oxygen enricher 3 is an air intake port as indicated by the arrow E in FIG. 1. 5 is mixed with the air from the air intake port 5 and supplied to the ejector unit 20 provided at the ejection port 14. That is, the air with high oxygen concentration from the branch path 4b turns in the direction of the arrow K at the outlet (tip opening 4c) and merges with the normal air to generate a flow in the Z direction, which is necessary for jet driving. By the air being entrained in the bath water, the bath water in which relatively large bubbles are entrained is ejected from the spout 14 and the bather can be massaged. The bubbles of high-concentration oxygen ejected into the bathtub 1 drift near the face of the bather who is bathing in high-oxygen concentration, so that the lungs can be relieved and the bath can be comfortably bathed. Also, the high oxygen concentration air drifting in the vicinity of the bather's face gradually diffuses into the bathroom 6 to increase the oxygen concentration in the bathroom 6. For this reason, even when the washing operation is performed at the washing place, the washing operation is performed in air with a high oxygen concentration, so that lung respiration can be facilitated.

  During the operation of the jet bath apparatus B, since the fine bubble generating apparatus A is not operated, air having a high oxygen concentration is supplied to the ejector unit 20 side of the jet bath apparatus B. Incidentally, when air with a high oxygen concentration of 2 liters / min is supplied from the oxygen enricher 3, all of the high oxygen concentration of 2 liters / min is sucked into the jet bath device B, and as described above, the high concentration oxygen These bubbles are jetted into the bathtub 1 as air bubbles having a high oxygen concentration, drift near the bather's face, and gradually diffuse into the bathroom 6 to increase the oxygen concentration in the bathroom 6.

  Furthermore, by sharing the air intake port 5 of the jet bath device B as the enriched oxygen supply port of the oxygen enrichment device 3, there is no need to separately provide the enriched oxygen supply port in the bathtub 1, and the piping of the bathtub 1 is simplified. There is also an advantage that air having a high oxygen concentration can be supplied into the bathroom 6 while being inexpensive and inexpensive. In other words, the air intake port 2 has a function of sucking high oxygen concentration air and normal air in the bathroom 6 during the jet bath operation, and high oxygen concentration air (enriched oxygen) during the fine bubble operation. It has the function to supply to.

  3 and 4 show another embodiment of the present invention. The other branch path 4b of the oxygen enricher 3 is connected to the enriched oxygen supply port 2 opened in the bathroom 6, and the enriched oxygen supply port 2 is shown. The air intake port 5 of the jet bath apparatus B is provided in the vicinity, and the enriched oxygen supply port 2 is disposed so as to protrude above the flange 18 of the bathtub 1. In this example, the air intake port 5 is formed in the center side of the upper lid 30 of the cap 32 fitted into the flange 18 of the bathtub 1, and the enriched oxygen supply port 2 is provided on the outer peripheral side. The lower space 2 a of the enriched oxygen supply port 2 is partitioned from the lower space of the air intake port 5 by the fitting cylinder portion 31. In the lower space 2 a of the enriched oxygen supply port 2, the tip opening 4 c of the branch path 4 b of the oxygen enricher 3 is opened upward. Other configurations are the same as those of the embodiment of FIGS.

  Thus, during the operation of the jet bath apparatus B, high oxygen concentration air is once discharged from the enriched oxygen supply port 2 to the outside, and the discharged high oxygen concentration air is supplied to the air intake port 5 located in the vicinity thereof. Inhaled by the ejector action. That is, since the negative pressure in the direction indicated by the arrow Z is generated in the jet pipe path 16, the high oxygen concentration air discharged from the enriched oxygen supply port 2 turns in the direction indicated by the arrow J in FIG. The air is sucked into the air intake port 5 and merges with normal air, so that a flow in the Z direction occurs. On the other hand, since no negative pressure is generated in the jet pipe path 16 during the operation of the fine bubble generator A, as shown by the arrow H in FIG. 4, the high oxygen concentration air discharged from the enriched oxygen supply port 2 is in the bathroom. 6 is released as it is.

  Here, since both the air intake port 5 and the enriched oxygen supply port 2 protrude above the flange 18 of the bathtub 1, the operation of the embodiment of FIGS. Similarly to the effect, even when the bath water in the bathtub 1 is full, the bath water cannot enter the enriched oxygen supply port 2 that is different from the air intake port 5, so that the oxygen concentration is higher than the enriched oxygen supply port 2. Concentration air does not overflow with water and does not generate abnormal noise. In this example, since the air intake port 5 of the jet bath device B and the enriched oxygen supply port 2 of the oxygen enrichment device 3 are separate paths, even if the bathtub 1 is full of water, The enriched oxygen supply port 2 which is different from the air intake port 5 is not submerged. Therefore, the protruding width of the air intake port 5 upward from the flange 18 of the bathtub 1 can be reduced. As a result, the protruding width of the upper lid 30 of the cap 32 including the air intake port 5 can be reduced, and the appearance of the bathtub 1 is not impaired. There is also an advantage that can be made.

It is sectional drawing which shows one Embodiment of this invention and demonstrates the flow of the air of high oxygen concentration at the time of a jet bath apparatus driving | operation. It is sectional drawing explaining the flow of the air of high oxygen concentration at the time of a micro bubble generator operation same as the above. It is sectional drawing which shows other embodiment and demonstrates the flow of the air of high oxygen concentration at the time of a jet bath apparatus driving | operation. It is sectional drawing explaining the flow of the air of high oxygen concentration at the time of a micro bubble generator operation same as the above. It is a perspective view of a bubble generation bathtub same as the above. It is explanatory drawing of the piping path | route of a jet bath apparatus same as the above. It is explanatory drawing of the piping path | route of a microbubble generator same as the above.

Explanation of symbols

A Fine bubble generating device B Jet bath device 1 Bathtub 2 Enriched oxygen supply port 3 Oxygen enriched device 4 Supply route 4a One branch route 4b The other branch route 5 Air intake port 6 Bathroom 10, 20 Ejector section

Claims (2)

  Air bubbles are dissolved in the bath water sucked in from the bathtub and discharged from the bath water in which the air is dissolved into the bath. In a bubble generation tub equipped with a jet bath device that entrains the taken-in air and jets the entrained bath water into the tub, an oxygen enrichment device that generates high oxygen concentration air is provided, and the high oxygen concentration The supply path for supplying the air is branched into two, one branch path is connected to the ejector portion of the microbubble generator, and the other branch path is connected to the air intake port of the jet bath apparatus and this air intake The mouth is located so as to protrude above the upper end surface of the bathtub, and the normal empty air taken in from the air intake port inside the air intake port during operation of the jet bath device. And high oxygen concentration air can be mixed and supplied to the ejector part of the jet bath device. During operation of the fine bubble generator, a part of the high oxygen concentration air from the oxygen enricher is ejected from the fine bubble generator. A bubble generating bath characterized by being able to discharge the remainder of the high oxygen concentration air into the bathroom through the air intake port of the jet bath device.   Air bubbles are dissolved in the bath water sucked in from the bathtub and discharged from the bath water in which the air is dissolved into the bath. In a bubble generation tub equipped with a jet bath device that entrains the taken-in air and jets the entrained bath water into the tub, an oxygen enrichment device that generates high oxygen concentration air is provided, and the high oxygen concentration The supply path for supplying the air is branched into two, one branch path is connected to the ejector part of the microbubble generator, and the other branch path is connected to the enriched oxygen supply port opened in the bathroom, The enriched oxygen supply port is disposed so as to protrude upward from the upper end surface of the bathtub, and the air intake port of the jet bath device is disposed in the vicinity of the enriched oxygen supply port. High oxygen concentration air discharged from the enriched oxygen supply port during rotation can be sucked into the air intake port together with normal air in the bathroom and supplied to the ejector section of the jet bath device, and the oxygen enrichment device during operation of the fine bubble generator A part of the high oxygen concentration air from the air is supplied to the ejector part of the fine bubble generator, and the remainder of the high oxygen concentration air can be discharged into the bathroom through the enriched oxygen supply port. Bubble generation bathtub.

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