JP4007295B2 - Bubble generation bathtub - Google Patents

Description

  The present invention relates to a bubble generating bathtub provided with a bubble generating device that circulates bath water (liquid) in a bathtub, mixes and dissolves air (gas), and supplies fine bubbles to the bathtub.

  In recent years, there has been a need to squirt bath water containing air and various gases into a bathtub, enjoy a comfortable bath with a jet stream containing fine bubbles, and expect a thermal effect, a massage effect, and a cleaning effect in terms of health. Is growing. Therefore, there is a need for a bubble generating device that can generate bubbles stably. Patent Document 1 is disclosed as such a bubble generating device.

The bubble generator includes a circulation pump, a gas supply unit, a gas-liquid mixing unit, and the like. The gas-liquid mixing pressure feeding unit that mixes gas and bath water in a bathtub to form a gas-liquid mixed fluid; The gas-liquid mixed fluid pumped by the mixed pressure feeding means is sprayed onto the bath water stored therein, and is formed from a gas-liquid dissolution tank or the like in which air is pressurized and dissolved in the bath water to generate bubbles.
JP 2001-347145 A

  However, in the conventional bubble generating device, the water level in the vicinity of the water surface of the gas-liquid dissolution tank is in a bubbling state where a large amount of bubbles are present, the water level is unclear in the conventional gas-liquid dissolution tank, and accurate water level detection is difficult. The water level in the dissolution tank cannot be adjusted. As a result, the liquid level is not stable, and the amount of air in the gas-liquid dissolution tank is constantly changed. Therefore, the amount of dissolved air is not stable, so that a large-capacity circulation pump is required and noise is high.

  Therefore, since the circulation pump is installed in a place away from the bathtub, there is a problem that a wall is penetrated for piping or a large space is required in layout.

  Furthermore, since the air consumption of the circulation pump is large, there is a problem that air lock is likely to occur and large bubbles are often generated in the bathtub.

  The present invention has been made in consideration of the above-mentioned circumstances, and while reducing the circulating pump size by keeping the liquid level in the gas-liquid dissolution tank constant and stabilizing the amount of dissolved air, the gas-liquid dissolution tank It is also an object of the present invention to reduce the size of the bubble generating device so that the members constituting the bubble generating device can be disposed on the side of the bathtub within the projection plane in a plan view of the bathtub.

  It is another object of the present invention to provide an air bubble generator that does not easily generate an air lock and does not generate large bubbles in a bathtub.

  Another object of the present invention is to provide a hygienic and highly reliable bubble generating device that does not leave residual water in the device.

  It is another object of the present invention to facilitate prefabrication by reducing the workability on site by simplifying the attachment of the members constituting the bubble generating device.

In order to achieve the above-mentioned object, the invention of claim 1 is characterized in that the bath water in the bath is circulated and the gas-liquid dissolved fluid in which air is pressurized and dissolved in the bath water is released and discharged into the bath. The bubble generating device for generating the gas is characterized in that it is disposed on the side of the bathtub within the projection plane in a plan view of the bathtub.

The bubble generating device mixes air and bath water in the bath to form a gas-liquid mixed fluid, and pumps the gas-liquid mixed pressure feeding means for pumping the gas-liquid mixed fluid and the gas-liquid mixed pressure feeding means. A gas-liquid dissolution tank in which the gas-liquid mixed fluid is sprayed toward the bath water stored therein and air is pressurized and dissolved in the bath water to generate bubbles supplied into the bath. The gas-liquid dissolution tank is partitioned into a primary side tank and a secondary side tank by a partition wall, and the bath water in which the gas-liquid mixed fluid pumped by the gas-liquid mixed pressure feeding means is stored in the primary side tank Sprayed toward the surface to generate a gas-liquid solution, and the bubbles formed in the primary-side tank communicated with the primary-side tank and the secondary-side tank at the lower part of the partition wall as the gas-liquid solution A bubble passage part that passes to the secondary tank is provided, and the bath height in the gas-liquid dissolution tank is Bubbles that are kept constant via an air vent valve provided in the secondary tank, and are not fine bubbles when the primary tank and the secondary tank communicate with the upper part of the partition wall and pass through the bubble passage part. The secondary side is provided so as to increase the time for separating and ascending bubbles that are not fine bubbles, by providing a gas reflux part for returning the air formed by raising the secondary side tank to the bath surface of the primary side tank. The tank is characterized in that a discharge port for supplying the generated gas-liquid solution into the bath is provided below the bubble passage part .

Furthermore , the piping from the hot water suction port of the bubble generating device to the circulation pump suction port as the gas-liquid mixing pressure feeding means is disposed so that the circulation pump side is at a high position, and the gas-liquid dissolution tank and the bathtub The piping up to the discharge port is arranged so that the horizontal or gas-liquid dissolution tank side is at a high position.

Invention of Claim 2 is the bubble generation bathtub of Claim 1 , Comprising: The air of the air quantity which the air of the said bubble generation apparatus and the bath water in a bathtub mix through an ejector, and is attracted | sucked by this ejector The adjustment part is provided in the lower part side of the flange part provided in the outer peripheral end of the bathtub upper part, It is characterized by the above-mentioned.

A third aspect of the present invention is the bubble generating bathtub according to the first or second aspect , wherein a pair of upper and lower tapered constricted portions are formed in a horizontal suction pipe in the air suction portion of the ejector. An air vent hole and a water drain hole penetrating the tapered throttle portion are provided in the pair of tapered throttle portions.

  According to the first aspect of the present invention, a large space is not required for the bubble generating device, and the prefabrication of the bathtub can be realized, and workability at the site can be reduced.

Furthermore, since the liquid level in the gas-liquid dissolution tank can be kept constant, the circulation pump can be reduced in size, and the gas-liquid dissolution tank can also be reduced in size. Therefore, the bubble generating device can be disposed on the side of the bathtub within the projection plane in a plan view of the bathtub. In addition, a large space is not required in the bubble generating device, and the bathtub can be prefabricated, so that assembly workability at the site can be reduced.

Then , when the bubble generating device is stopped and the water in the bubble generating tub is emptied, no residual water remains in the circulation pump and the gas-liquid dissolution tank, so that it becomes a sanitary bubble generating device. And since an air pool does not arise in piping or a circulation pump, an air lock can be prevented. Moreover, the generation of large bubbles when the circulation pump is stopped can be prevented.

According to the second aspect of the present invention, since the air adjusting portion is attached to the highest position of the bubble generating bath, the hot water does not leak out, so that a sanitary bubble generating device can be obtained.

According to the third aspect of the present invention, when the bubble generating device is stopped, drainage is removed through the drainage hole, so that it becomes hygienic. Moreover, since there is no air pool because there is an air vent hole, air is not sucked in when the bubble generating device is started, so that air lock can be prevented.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

<Configuration of bubble generation bathtub>
The structure of the bubble generation bathtub in embodiment of this invention is demonstrated using FIGS.

  As shown in FIG. 1, the bubble generating device 11 is provided with an ON / OFF control panel 26 for the circulation pump 17 serving as a gas-liquid mixed pressure feeding means disposed at a position where the hand of the bathtub body 12 is easily accessible. All are stored compactly in the bathtub main body 12 (space part except the bathtub 12a from the bathtub main body 12).

  When the bubble generating device 11 turns on the control switch 26, the circulation pump 17 rotates and sucks bath water from the suction port 13 of the bathtub 12 through the suction pipe 14. Further, an air suction portion 15 is disposed in the middle of the suction pipe 14, and air is sucked from the air adjustment portion 23. Further, the circulation pump 17 causes the gas-liquid mixed solution, which is a mixture of bath water and air, to be jetted into the gas-liquid dissolution tank 1 at a high speed, and is generated from the gas-liquid dissolution tank 1 through the discharge pipe 18 in the bathtub 12. It is a device that generates bubbles by sending it to the discharge port 22 and injecting it into the bathtub 12.

  And the front surface (apron) of the bathtub main body 12 is covered with the panel 12b (it is comprised by 2 panels in FIG. 2), and other 3 surfaces (2 side surfaces and a rear surface) are as a part of building which is not illustrated. Covered. In addition, each device is arranged on the apron side as much as possible so that maintenance can be easily performed from the apron side if the apron is removed. The panel 12b is attached to the bathtub main body 12 by arranging a soundproof material such as foam tape around the panel 12b.

  Regarding the attachment of the bubble generating device 11, rubber nuts (not shown) are used for vibration isolation, and a rubber sheet (not shown) is particularly provided between the gas-liquid dissolution tank 1 and the circulation pump 17 between the floor surface. Double anti-vibration measures are also used. Moreover, a vibration-proof joint (not shown) is inserted in the middle of the piping.

  Regarding the piping, the gradient of the suction pipe 14 from the bathtub suction port 13 to the circulation pump 17 as the gas-liquid mixed pressure feeding means is arranged so that the circulation pump side 17 is at a position higher by, for example, 2 degrees or more, and the gas-liquid dissolution tank 1 and the discharge pipe 18 to the bathtub discharge port 22 are arranged so that the horizontal or gas-liquid dissolution tank 1 side is at a high position.

  Moreover, the air adjustment part 23 of the bubble generation apparatus 11 is attached to the highest position of the bubble generation bathtub 12 on the lower side of the flange part 26a provided at the outer peripheral end of the upper part of the bathtub.

  As shown in FIG. 3, the gas-liquid dissolution tank 1 is attached to the mounting base 60 by bolts and nuts 61 and 62. At this time, the bolts and nuts 61 are attached to the outer plate directly below the primary side tank of the gas-liquid dissolution tank 1 so as to be able to effectively handle the spray pressure from the nozzle applied to the primary side tank. . In addition, the pair of bolts and nuts 62 has a substantially intermediate height on the center line of the branch part 4 and the discharge port 9 of the air vent valve 20 in the secondary side tank, so that vibration caused by the solution entering and leaving the gas-liquid dissolution tank 1 is maintained. Arranged to be able to. The distance between the pair of bolts and nuts 62 is made as short as possible so as to avoid the influence of stress due to expansion and contraction due to heat.

  In order to facilitate on-site attachment with one touch, it is preferable to prefabricate as much as possible at the time of factory shipment. For this reason, the piping is fixed in advance in the bathtub before shipment, and thereafter, all the pipes are fixed through the quick fasteners 63. (In FIG. 3, it is shown as an example that the quick fastener 63 is used between the air vent valve 20 and the branch part 4).

  Further, as shown in FIG. 4A, the suction pipe 14 of the air suction portion 15 is piped so that the bathtub side is lowered, and a pair of upper and lower tapered throttles 15 a are formed in the air suction portion 15. Ejector mechanism. When the bath water 27b passes through the ejector center at a high speed, the air pressure in the direction perpendicular to the water flow becomes a negative pressure and the air 27b is drawn.

  The pair of upper and lower tapered throttles 15a are provided with an air vent hole 15b and a water vent hole 15c.

  Further, as shown in FIG. 5, a special function is provided for stopping and starting the circulation pump of the bubble generating device.

  In other words, when the operation stop signal is input, the output drops by one stage after 2 seconds, the output of the other stage drops after another 2 seconds, and the pump stops after another 2 seconds. In this way, the output is automatically adjusted in three stages by the delay timer, and the pump stops 6 seconds after the stop signal instruction.

  When restarting immediately after the circulation pump is stopped, a function of restarting after a predetermined time is provided. In this figure, the output does not increase for 5 seconds after the restart signal, the output increases by one stage only after 5 seconds, the output further increases by one stage after one second, and becomes 100% output after another one second. Here, the output attenuation amount of each stage of the circulation pump is set, for example, at about 30% ± 10%.

<System of bubble generation device in bubble generation bathtub>
Here, the system of the bubble generating apparatus in the embodiment of the present invention will be described in detail with reference to FIGS.

  As shown in FIG. 6, after the bath water 27 b is sucked from the suction port 13 in the bathtub 12 a by the operation of the circulation pump 17, the state is again ejected into the bathtub 12 a as the fine bubble water 28 from the discharge port 22. Show. Therefore, the user can use the fine bubble water 28 by starting and stopping the ejection of the fine bubble water 28 by turning the control switch 26 ON / OFF as necessary. The circulation pump 17 is installed with the impeller facing downward.

  First, when the user turns on the control switch 26, the motor 24 for driving the circulation pump 17 starts rotating and the circulation pump 17 rotates. This circulation pump 17 is a small centrifugal pump, and the principle is used that the hot water that has entered each chamber in the pump is continuously discharged in the centrifugal direction by the centrifugal force generated by the rotation of the pump. Yes.

    When the circulation pump 17 starts to rotate, the hot water 27b is drawn into the circulation pump 17 from the suction port 13 of the bathtub 12 through the suction pipe 14. At this time, air 27a is mixed into the pipe in the middle of the suction pipe 14. For this purpose, an air suction part 15 is arranged. The air suction part 15 has an ejector mechanism, and utilizes the principle that when the hot water 27b passes through the center part of the ejector at a high speed, the surrounding air pressure in the direction perpendicular to the water flow becomes a negative pressure. It does not require special power. The circulation pump 17 has a structure in which 3% is sucked in as the minimum necessary air because the air locks and the bath water does not flow if extreme air is sucked during operation (flow rate ratio 5%).

  The air suction portion 15 is connected to the air adjustment portion 23 by a connecting pipe 16, and the air adjustment portion 23 is provided with a check valve 23a, a throttle valve 23b, and a filter 23c in order from the air suction portion 15 side. Yes. Therefore, the hot water 27b does not flow backward from the connecting pipe 16 due to the check valve 23a and does not flow out to the atmosphere side. In addition, clean air is sucked in by the effect of the filter 23b having a desired mesh in the filter 23b, and a desired set amount of air is sucked by adjusting the degree of vacuum generated by the flow velocity in the ejector with the throttle valve 23b. Is done. The required mixing ratio of the air 27a to the required flow rate of the bath water 27b to be used is preset in advance, so that the user does not need to change the setting of the throttle valve 23b.

  Then, the circulation pump 17 sends the gas-liquid mixed solution 29a in which the bath water 27b and the air 27a are mixed from the spray nozzle 19 of the gas-liquid dissolving tank 1 to the primary tank 3 in the gas-liquid dissolving tank 1 through the discharge pipe 18 at high speed. Erupt. The generated gas-liquid solution 29b is communicated from the discharge port 9 of the secondary side tank 5 of the gas-liquid dissolution tank 1 to the discharge port 22 of the bathtub 12a through the discharge pipe 18 through the pressure reducing valve 21. At this time, since the gas-liquid solution 29b is pressurized and dissolved in air, the internal pressure is released when the gas passes through the pressure reducing valve 21, and the dissolved air rapidly expands into the bath water 27b of the bathtub 12a. Fine bubbles 28 can be generated.

  The internal structure of the gas-liquid dissolution tank 1 will be described with reference to FIG.

As shown in FIG. 7, the gas-liquid dissolution tank 1 is divided into a primary tank (bubbling tank) 3 and a secondary tank (water level detection tank) 5 by a partition wall 6, and the primary tank 3 and the secondary tank 5. Has a structure in which the gas circulation part 7 at the upper part of the partition wall 6 and the bubble passage part 8 at the lower part of the partition wall 6 communicate with each other. A spray nozzle 19 is disposed on the upper side of the primary side tank 3, and an air vent valve 20 is provided on the side wall of the secondary side tank 5 via the branch part 4.
Moreover, the partition wall lower part 6a at the lower part of the partition wall 6 is provided in a trumpet shape so as to be squeezed and communicated from the primary side tank 3 to the secondary side tank 5, and further, the partition wall lower part 6a in the secondary side tank 5 is provided. The bottom horizontal region 6c is formed below the bubble passage portion 8 of the partition wall lower portion 6a. And the discharge port 9 and the discharge part 10 are formed below the bubble passage part 8 of the partition wall lower part 6a.

  The spray nozzle 19 in the primary side tank 3 is a fan type spray nozzle having a low pressure loss and a strong spray hitting force, and its spray area is a 6b-6b cross section (a cross section at a height position near the inner upper end of the branch part 4). At a constant water level (liquid level) 6b), the spray angle φ is set so that the spray region of the gas-liquid mixed fluid 29a discharged from the spray nozzle 19 substantially covers the horizontal section of the primary tank. Has been. In addition, since the cross section of a primary side tank is a rectangle, spray angle (phi) differs with respect to a short side and a long side, respectively. When the gas-liquid mixed fluid 29a is discharged through the spray nozzle 19, the primary side tank 3 serves as a spray bubbling tank for turning the bubbles 28a into the gas-liquid solution 29b.

  The secondary tank 5 is provided with an air vent valve 20 on the side wall via the branching section 4, and serves as a water level detection tank capable of automatically discharging air and detecting the water level in the gas-liquid dissolution tank 1. Have The branch portion 4 of the air vent valve 20 is formed on the outer wall side of the gas-liquid dissolution tank 1 at a height located between the upper end and the lower end of the partition wall 6.

  Here, the primary tank 3 of the gas-liquid dissolution tank 1 is a spray bubbling tank for dissolving the bubbles 28a in the bath water 27b when the gas-liquid mixture 29a is discharged through the spray nozzle 19. Accordingly, the gas-liquid mixed liquid 29a with the increased amount of air collides with the liquid surface 6b-6b of the bath water 27b in the primary side tank 3 while entraining the moist air 7a at the upper part of the primary side tank 3 and bathes. It is dissolved under pressure in the hot water 27b to become a gas-liquid solution 29b. As described above, the region 7b surrounded by the liquid surfaces 6b-6b and the upper end of the partition wall 6 is in a bubbling state in which gas, bath water, and bubbles are mixed.

  The undissolved bubbles that could not be dissolved by the high-speed jet are accumulated in the upper part of the primary tank 3 and are used to join the moist air 7a in the upper part of the primary side tank 3 and repeatedly dissolve in the bath water 27b. .

  When the bubble 28a passes through the bubble passage portion 8, the flow velocity is suddenly reduced. Therefore, the time until the gas-liquid solution 29b reaches the discharge port 9 is increased. Time to rise by buoyancy is given to the bubbles 28a in the liquid solution 29b. In particular, the air bubbles 28a that are not fine bubbles have higher buoyancy than the fine bubbles, and therefore can be reliably lifted and separated in the secondary side tank 5.

  The air bubbles returned in this way are broken in the upper part of the secondary side tank 5 and drifted as moist air 7a, but this is wasted because it passes through the gas circulation part 7 and is sequentially returned to the primary tank 3. do not become.

  In addition, the gas-liquid dissolution tank has a two-layer structure of a primary side tank and a secondary side tank, and the primary side tank and the secondary side tank are formed integrally to form a simple structure. Further, the primary side tank The surplus gas in the gas-liquid solution generated in step 1 is circulated on the liquid surface in the primary tank through the gas circulation part, so that the gas can be used efficiently and the gas is supplied wastefully. There is no need. As a result, the gas-liquid dissolution tank can be reduced in size.

  Further, the operation of the air vent valve 20 will be described.

  When the water surface of the secondary tank 5 is at the inner surface side upper end (constant water level 6b) of the branch part 4 of the air vent valve 20, the water surface 6b-6b is in a state where the water surface in the gas-liquid dissolution tank 1 is stable. . When the water level is lower than the constant water level, the air in the gas-liquid dissolution tank 1 is released to the outside through the air vent valve 20, and the water surface is returned to the constant water level 6b-6b. If the water level is higher than this constant water level, the water level will eventually drop to the constant water level. Therefore, since the water surface in the gas-liquid dissolution tank 1 operates almost stably in the vicinity of this constant water level, the secondary tank 5 also serves as a water level detection tank for detecting the water level (constant water level). ing.

<Action of bubble generation bathtub>
As described above, since the liquid level in the gas-liquid dissolution tank can be kept constant, the circulation pump can be reduced in size, and the gas-liquid dissolution tank can also be reduced in size. Therefore, the member which comprises a bubble generating apparatus can be arrange | positioned in the projection surface by the planar view of a bathtub, and the side part of a bathtub.

  In addition, a large space is not required for the bubble generating device, and the bathtub can be prefabricated, thereby reducing workability on site.

  The gradient of the suction pipe 14 from the bathtub suction port 13 to the circulation pump 17 as the gas-liquid mixture pressure feeding means is arranged so that the circulation pump side 17 is at a high position, and the gas-liquid dissolution tank 1 and the bathtub discharge port 22 are arranged. The discharge pipe 18 is disposed so that the horizontal or gas-liquid dissolution tank 1 side is at a high position.

  Therefore, when the bubble generating device 11 is stopped and the bath water in the bubble generating bathtub 12 is emptied, air enters from the air vent valve 20 provided in the gas-liquid dissolution tank 1, so that the entire bubble generating device 11 (circulation pump) 17 and the gas-liquid dissolution tank 1) all the bath water is discharged naturally, no residual water remains, the breeding source of Legionella bacteria and the like can be cut off, and hygiene is improved.

  In addition, since it arrange | positions so that the piping gradient from the bathtub suction inlet 13 to the circulation pump 17 may become the position where the circulation pump side 17 is high, even during an operation | movement, since an air does not stay, an air lock can be prevented.

  Moreover, since the air adjustment part 23 of the bubble generation apparatus 11 is attached to the highest position of the bubble generation bathtub 12 on the lower side of the flange part 26a provided at the outer peripheral end of the upper part of the bathtub, the bubble generation apparatus 11 should malfunction. Even when it is done, the hot water does not leak out, so the hygiene is improved.

  Further, the suction pipe 14 of the air suction portion 15 is piped so that the bathtub side is lowered, and the pair of upper and lower tapered throttles 15a are provided with an air vent hole 15b and a water vent hole 15c. When the operation is stopped, the residual air on the bathtub side of the upper tapered throttle 15a escapes to the circulation pump side through the air vent hole 15b, and the drain on the circulation pump side of the lower tapered throttle 15a returns to the bathtub through the drain hole 15c. I can do it.

  (As shown in FIG. 4 (b), if the pair of upper and lower tapered throttles 15a are not provided with an air vent hole and a water drain hole, the upper tapered throttle when the bubble generating device is stopped. In 15a, an air pool is generated on the bathtub side, and in the lower tapered throttle 15a, a drain pool is generated on the circulation pump side).

  Therefore, since there is no air pool, when the bubble generating device is started, air (total of the air pool and air 27a) is not excessively taken in, and mechanical damage due to the air lock of the circulation pump can be prevented.

  Furthermore, since drainage is eliminated, breeding sources such as Legionella bacteria can be cut off, so hygiene is improved.

Further, regarding the stop and start of the circulation pump of the bubble generating device, when an operation stop signal is input, the output is automatically adjusted in three stages by a delay timer, and the pump stops 6 seconds after the stop signal instruction. Since the pump pressure fluctuates moderately, “If the circulation pump is suddenly stopped, the throttle (pressure reducing valve 21) is arranged at the discharge port. “Phenomenon that air flows backward from tank to bathtub” is eliminated, and large bubbles from the suction port can be prevented.
Further, when restarting immediately after the circulation pump is stopped, a function of restarting after a predetermined time is provided. In other words, the air in the circulation pump and the piping flows upward in 5 seconds when the circulation pump does not start, the air on the suction side is replaced with the hot water, and the impeller in the circulation pump can be submerged. When restarting, machine damage due to air lock can be prevented.

  In addition, all the above-mentioned Examples show an example of the present invention, and needless to say, the present invention should not be limited to these.

  For example, regarding the start and stop of the circulation pump of the bubble generator, the switching of each output mode is 2 seconds at the time of stop, but of course it may exceed 2 seconds, and the restart after the stop is 5 seconds. You may set between 5 seconds and 9 seconds. In addition, although the start-up after the restart is made every second, if it restarts, there is no effect on the airlock, so other start-up modes may be used. Although a pair of upper and lower tapered diaphragms 15a are formed in the air suction portion 15, only one of the upper and lower tapered diaphragms 15a may be used depending on the situation.

It is a bubble generation device to which the present invention is applied, (a) is a plane perspective view showing the state where it was built in a bathtub body, and (b) is an AA section of (a). It is a perspective view which shows the state which removed the front panel in the state integrated in the bathtub main body with the bubble generator to which this invention was applied. (A) of the gas-liquid dissolution tank to which this invention was applied is an attachment front view, (b) is a BB cross section. (A) is sectional drawing which shows that the hole is provided in the taper-shaped throttle part, (b) is a cross section in case the hole is not provided in the taper-shaped throttle part of the air suction part to which this invention was applied FIG. It is an output diagram which shows the stop mode of the circulation pump to which this invention was applied, and the operation resumption mode after a stop. It is a systematic diagram of the bubble generator to which the present invention is applied. It is sectional drawing which shows the inside of a gas-liquid dissolution tank.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gas-liquid dissolution tank 10 Discharge part 11 Bubble generating device 12 Bathtub main body 12b Panel 13 Suction port 14 Suction pipe 15 Air suction part 17 Circulation pump 18 Discharge pipe 22 Discharge port 23 Air adjustment part 23a Flange part 26 Control switch

Claims (3)

A bubble generation bath provided with a bubble generator that generates fine bubbles by releasing the pressure of the gas-liquid dissolved fluid in which the bath water in the bath is circulated and the air is pressurized and dissolved in the bath water. There,
The bubble generating device was mixed with air and hot water in the bathtub to form a gas-liquid mixed fluid, and was pumped by a gas-liquid mixed pressure feeding means for pumping the gas-liquid mixed fluid, and a gas-liquid mixed pressure feeding means A gas-liquid dissolution tank in which a gas-liquid mixed fluid is sprayed toward the bath water stored therein and air is pressurized and dissolved in the bath water to generate bubbles supplied into the bath, The gas-liquid dissolution tank is partitioned by a partition wall into a primary side tank and a secondary side tank, and the gas-liquid mixed fluid pumped by the gas-liquid mixed pressure feeding means is placed on the bath surface where the primary side tank is stored. A gas-liquid solution is generated by spraying toward the bottom, and the primary side tank and the secondary side tank are communicated with the lower part of the partition wall so that bubbles formed in the primary side tank are formed as the gas-liquid solution. A bubble passing part that passes to the side tank is provided, and the bath height in the gas-liquid dissolution tank is the secondary side tank. Air bubbles that are not fine bubbles are separated when the primary side tank and the secondary side tank are communicated with the upper part of the partition wall and passed through the bubble passage part, while being kept constant through the air vent valve provided. A gas recirculation unit is provided to return the air formed by raising the secondary side tank onto the bath surface of the primary side tank, and it is generated in the secondary side tank so as to increase the time for separation and rise of bubbles that are not fine bubbles. An outlet for supplying the gas-liquid dissolved liquid into the bathtub is provided below the bubble passage part,
The piping from the hot water suction port in the bath to the circulation pump suction port as the gas-liquid mixed pressure feeding means is arranged so that the circulation pump side is at a high position, to the gas-liquid dissolution tank and the discharge port of the bathtub The piping is arranged so that the horizontal or gas-liquid dissolution tank side is at a high position,
The bubble generating tub is characterized in that the bubble generating device is disposed in a projection plane in a plan view of the bathtub and on a side of the bathtub. It is a bubble generation bathtub of Claim 1 , Comprising: The air adjustment part of the air quantity which the air of the said bubble generation apparatus and the bath water in a bathtub mix through an ejector, and is attracted | sucked by this ejector is the outer periphery of the bathtub upper part A bubble generating bathtub, which is provided on a lower side of a flange portion provided at an end. The bubble generating bathtub according to claim 1 or 2 , wherein a pair of upper and lower tapered throttle portions are formed in a horizontal suction pipe in the air suction portion of the ejector. An air bubble generating bathtub characterized in that an air vent hole and a water drain hole penetrating through the tapered throttle portion are provided.

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