JP2005288052A - Carbonic acid bath apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carbonic acid bath apparatus capable of creating a carbonate spring with a large free carbon dioxide concentration in a simple constitution at low cost by efficiently dissolving carbon dioxide in bathtub water. <P>SOLUTION: A vessel body 30 having a hollow part 29 is provided at the end of a circulating track 14 of a bathtub hot water circulating device 10 circulating the hot water in the bathtub 12 by a pump 15, and the bathtub hot water and the carbon dioxide are circulated in the hollow part 29 and jetted out inside the bathtub 12 as fine air bubbles. This constitution can efficiently dissolve the carbon dioxide in the bathtub hot water to create the carbonate spring with the large free carbon dioxide concentration in the simple constitution at the low cost. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a carbonated bath apparatus that pressurizes and mixes high-concentration carbon dioxide in a circuit for circulating hot water in a bathtub and discharges it as fine bubbles to the bathtub hot water in the bathtub.

  When bathing in a carbonated spring containing free carbonic acid, the carbonate component in the carbonated spring acts on the capillaries under the skin to expand the capillaries, thereby improving the blood circulation of the bather and improving the bather's fatigue and health. Can be planned. As a carbonated bath apparatus in which carbon dioxide gas is dissolved in bathtub water so as to recover from fatigue and the like, there is a conventional one that dissolves carbon dioxide gas in a configuration in which water supplied to the bathtub is sprayed on the combustion exhaust gas of the water heater. (See, for example, Patent Document 1). FIG. 11 shows a conventional carbonated bath apparatus described in the patent literature. As shown in FIG. 11, a hot water supply pipe 3 for supplying hot water to a shower, a hot water tap, etc. via a hot water supply heat exchanger 2 heated by a hot water supply burner 1, and a branch branched from the hot water supply pipe 3 to supply hot water to a bathtub 4. Supplying tap water to the gas-liquid contact chamber 6 provided with piping 5 and recovering exhaust heat from the exhaust of the hot water supply heat exchanger 2, and melting the carbon dioxide gas by joining the obtained hot water to the branch piping 5 It is something to be made.

  Moreover, as another conventional carbonated bath apparatus, for example, there is a device that uses a hollow fiber membrane to pass carbon dioxide through the hollow portion of the hollow fiber membrane and dissolve the carbon dioxide in warm water (see Patent Document 2).

In FIG. 12, a pump 7 for feeding hot water from a bathtub and a carbon dioxide gas dissolver 8 incorporating a hollow fiber membrane are connected to constitute a circulation path, and the hot water flowing from the inlet of the dissolver 8 flows over the surface of the hollow fiber membrane. By contacting the hollow fiber membrane when passing, the carbon dioxide gas injected from the carbon dioxide cylinder 9 into the hollow fiber membrane is dissolved in the warm water.
Japanese Patent Laid-Open No. 5-137762 JP 7-313855 A

  However, in general, a method in which carbon dioxide gas is simply mixed into the flow of hot water with an ejector or a dissolution method by spraying in a gas-liquid contact chamber can obtain a sufficient free carbonic acid concentration close to 1000 ppm (for example, 500 to 1000 ppm). Have difficulty. Therefore, in the conventional carbonated bath device of Patent Document 1, water having a low temperature is brought into contact with carbon dioxide in the gas-liquid contact chamber 6 in order to improve the solubility of carbon dioxide even slightly. Since it is mixed with hot water coming from the hot water supply pipe 3, the carbonic acid concentration is lowered. Further, in order to improve the solubility in the gas-liquid contact chamber 6, the apparatus is complicated to increase the contact time and contact area between carbon dioxide gas and water, and the high pressure pump is used to reduce the particle size of the spray water. However, there was a problem that the cost would be increased.

  Moreover, in the other conventional carbonated bath apparatus of the said patent document 2, since the cost of a hollow fiber membrane is high and it is easy to raise | generate clogging with foreign materials, such as the dust in a bathtub, in that case, the effort of hollow fiber membrane replacement | exchange is required. There was a problem that it would be expensive.

  The present invention solves the above-mentioned conventional problems, and a high concentration carbon dioxide gas is mixed and supplied from a carbon dioxide enrichment device provided outside the bathroom to the bathtub hot water circulation circuit, and the high concentration carbon dioxide gas is ejected to the bathtub. An object of the present invention is to provide a carbonated bath apparatus that can be efficiently dissolved in bath water and can produce a carbonated spring having a high free carbonate concentration at a low cost with a simple configuration.

  In order to solve the above-mentioned conventional problems, a carbonated bath apparatus of the present invention connects a circulation circuit through which hot water in a bathtub circulates and a carbonate enrichment apparatus that supplies high-concentration carbonate with a carbonate pipe, A vessel having a hollow portion provided at the end of the circulation circuit for flowing out hot water, an inlet opening in the vessel, a pressurized liquid introduction pipe connected to the inlet from the circulation circuit, and an opening in the vessel The gas-liquid injection hole is used, and the hot water in the bath and the high-concentration carbon dioxide gas emitted from the carbon dioxide enrichment device are introduced to make a swirl flow in the vessel, and the carbon dioxide is dissolved in the hot water. It is set as the structure to be made.

  As a result, high-concentration carbonic acid is generated by a carbonic acid enrichment device provided outside the bathroom, and the generated high-concentration carbonic acid passes through the carbonic acid piping and swirls inside the vessel, causing intense contact between gas and liquid, and carbon dioxide. Carbon dissolves in hot water, or a large amount of high-concentration carbon dioxide microbubbles are generated due to the friction and shear generated, and the contact area with hot water increases significantly, so that much carbon dioxide is easily dissolved in hot water. In this state, the gas is ejected from the gas / liquid ejection hole into the bathtub.

  The carbonated bath apparatus of the present invention can efficiently dissolve high-concentration carbon dioxide gas in bath water, and can easily create a carbonated spring with a high free carbonic acid concentration with a simple structure at a low cost. You can take a bath.

  The first invention is a bathtub hot water circulation device and a circulation circuit through which hot water in a bathtub circulates, a carbon dioxide enrichment device for supplying high-concentration carbon dioxide gas, and a carbonic acid provided between the carbon dioxide enrichment device and the circulation circuit. A pipe, a vessel having a hollow portion provided at the end of the circulation circuit for flowing hot water into the bathtub, an inlet opening in the vessel, a pressurized liquid introduction pipe connected to the inlet from the circulation circuit, and a vessel It is equipped with a gas-liquid jet hole that opens in the body, and introduces high-concentration carbon dioxide gas from the bath water and carbonic acid enrichment device to make a swirl flow in the body and to blow out carbon dioxide from the gas-liquid jet hole When bath water and high-concentration carbon dioxide gas are swirling in the vessel, the high-concentration carbon dioxide gas converges on the swirling center due to the difference in specific gravity between the gas and liquid, and the gas axis It is formed, and the gas-liquid contacts vigorously and friction and shear occur. At the time of this contact, carbon dioxide dissolves in the hot water, and the swirling flow in the container having the gas axis is ejected from the gas-liquid jet hole, the gas axis is sheared, and high-concentration carbon dioxide becomes a large number of micro bubbles on the order of microns. Since the contact area with hot water is remarkably increased, more carbon dioxide is easily dissolved in hot water, and a carbonated spring having a high free carbonic acid concentration can be produced with a simple structure at low cost.

  According to the second invention, in particular, the hollow portion of the container body of the first invention is formed substantially rotationally symmetric, and the inflow port is configured to be opened in a tangential direction to the peripheral wall portion of the container body. Since it is possible to generate a swirling flow, the degree of gas-liquid contact and shear are increased, and the dissolution of carbon dioxide in bath water is further promoted. Can be made.

  In the third invention, in particular, a plurality of inflow ports opened in a tangential direction to the peripheral wall portion of the container body of the second invention are provided at predetermined intervals on the circumference of the peripheral wall portion of the container body. , Because it promotes swirling from multiple locations in the same rotation direction, it can generate a strong and stable swirling flow, ensuring the formation of the gas axis at the swiveling center, strengthening gas-liquid contact and shearing, and fine bubbles The amount of dissolved carbon dioxide can be increased by advancing the generation of a large amount of carbon dioxide, and a carbonated spring having a high free carbonic acid concentration can be produced with a simple structure at a low cost.

  In the fourth aspect of the invention, in particular, the inner hollow part of the cylindrical body is formed at the both ends of the rotational symmetry axis by forming the body of any one of the first to third aspects into a substantially hollow cylindrical shape. It becomes a substantially planar cylindrical space perpendicular to the axis, and liquid flows in tangentially from the circumference of this cylindrical space, so that there is almost no flow velocity component in the swirl axis direction disturbing the swirl flow, and perpendicular to the swivel axis. Since it is possible to make only the flow velocity component of a simple swirl, a strong and stable swirl flow can be generated, the gas-liquid contact and shear are strengthened, and the amount of dissolved carbon dioxide is reduced by advancing the generation of a large amount of fine bubbles. A carbonated spring with a high free carbonic acid concentration can be made with a simple structure and at a low cost.

  In particular, the fifth aspect of the present invention includes a collision portion that has a predetermined interval from the gas-liquid ejection hole of the container body according to any one of the first to fourth aspects of the present invention and that collides the ejection flow outside the container body. As a result, the high-concentration carbon dioxide gas and hot water in the vessel generate fine bubbles when they exit the gas-liquid jet holes, and this jet stream vigorously collides with the collision part, resulting in further shearing of the bubbles. Since many fine bubbles are generated, the area of contact with hot water is significantly increased, so that more carbon dioxide is easily dissolved in hot water, and a carbonated spring with a high free carbonic acid concentration can be made with a simple structure at low cost. .

  In particular, the sixth aspect of the invention includes an impeller having blades in the vicinity of the peripheral wall portion of the hollow portion of the vessel body according to any one of the first to fifth aspects of the invention, and an impeller having a rotating shaft as a rotation axis of the swirling flow. The blades on the peripheral wall of the hollow portion receive a force in the tangential direction due to the flow of the liquid introduced from the inlet, and the impeller rotates with the swirling flow, and is disturbed by the flow velocity component in the swirling axis direction, etc. In addition to strengthening gas-liquid contact and shearing, the effect of air bubble shearing and refinement is added, and the generation of a large amount of microbubbles is promoted to promote the dissolution of carbon dioxide. The amount can be increased, and a carbonated spring with a high free carbonic acid concentration can be produced at a low cost with a simple structure.

  In the seventh aspect of the invention, in particular, the gas / liquid ejection hole according to any one of the first to sixth aspects of the invention opens to one of both ends of the swirling axis of the swirling flow, and has a predetermined distance from the gas / liquid ejection hole. It has a collision part where the jet flow collides with the outside of the container body, and has a structure in which a carbonic acid suction part connected to the carbonic acid piping is provided on the extension line of one of the collision parts. When the gas turns into a swirl, the high-concentration carbon dioxide gas converges on the turning center due to the difference in specific gravity between the gas and the liquid, and a gas shaft is formed. In addition, since the swirling outer periphery has a high pressure and the central portion has a low pressure, the swirling shaft portion of the swirling flow in which the gas shaft exists has a negative pressure, and the high-concentration carbon dioxide gas is self-absorbed from the carbon dioxide suction portion provided in the collision portion. become able to. Therefore, the supply structure of high-concentration carbon dioxide is simplified, and the degree of freedom in the shape of the vessel is increased by increasing the number of gas-liquid jet holes and the structure of strengthening the swirl flow. A carbonated spring with a high free carbonic acid concentration can be produced at a low cost with a simple structure.

  In the eighth aspect of the invention, in particular, the number of gas-liquid ejection holes is determined by adopting a configuration in which the gas-liquid ejection holes of any one of the first to seventh inventions are opened on both sides of the swirling shaft end of the swirling flow. Can increase the amount of fine bubbles coming out of the gas-liquid ejection holes, increasing the contact area with hot water, making more carbon dioxide easier to dissolve in hot water, It can be made at low cost with a simple configuration.

  In the ninth aspect of the invention, in particular, the gas-liquid ejection hole of any one of the first to eighth aspects of the invention opens to one of both ends of the swirling shaft of the swirling flow, and the body is directed to the gas-liquid ejection hole. By making the cross-sectional area tapered, the swirl radius of the liquid swirl becomes smaller and the flow path becomes narrower as it approaches the gas-liquid jet hole, so that the flow rate becomes faster and the gas-liquid contact accompanying the increase in speed increases. The degree and shearing force are increased, and the refinement of bubbles is promoted, so that the dissolution of carbon dioxide in the bath water advances, and a carbonated spring having a high free carbonic acid concentration can be produced with a simple structure at low cost.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by the form of this Example.

(Embodiment 1)
FIG. 1 is an overall system configuration diagram of a carbonated bath apparatus according to a first embodiment of the present invention, FIG. 2 is a perspective view of a fine bubble generating portion of the carbonated bath apparatus according to the first embodiment, and FIG. It is sectional drawing of a fine bubble generation | occurrence | production part.

  In FIG. 1 to FIG. 3, the bathtub hot water circulation device 10 is provided below the apron 13 of the bathtub 12 in the bathroom 11 and circulates hot water in the bathtub 12 by a pump 15 provided in the circulation circuit 14. A carbonate enrichment device 16 provided outside the bathroom 11 is composed of a carbonate enrichment film 17, a blower fan 18, a vacuum pump 19, and a check valve 20, and is generated in a hot water combustor 21 and is a heat exchanger. The carbon-enriched air concentrated through the carbon-rich film 17 from the exhaust gas having passed through 22 passes through the carbonic acid piping 23 as high-concentration carbon dioxide gas, enters the carbonic acid suction port 24, and enters the circulation circuit 14. The bathtub 12 is formed with a suction port 25 and a discharge port 26 through which bath water circulates. A pump 15 is connected to the suction port 25 via the circulation circuit 14, and a carbonic acid suction port 24 for sucking high-concentration carbonic acid is connected to the pump 15. A dissolution tank 27 is disposed on the downstream side of the pump 15, and the pump 15 and the dissolution tank 27 are communicated with each other by the circulation circuit 14. The discharge port 26 of the bathtub 12 is provided with a fine bubble generation unit 28, and the dissolution tank 27 and the fine bubble generation unit 28 are communicated by the circulation circuit 14.

  Next, in FIG. 2 and FIG. 3, the fine bubble generating portion 28 includes a vessel body 30 having a rotationally symmetric hollow portion 29 formed in a substantially elliptical sphere shape, and a rotationally symmetric axis provided on the peripheral wall of the vessel body 30. The inlet 31 is opened in a tangential direction with a circular cross section perpendicular to the pressure circuit, and the pressurized liquid introduction pipe 32 communicates with the circulation circuit 14. Opened gas-liquid ejection holes 33 are provided, and a circular baffle plate 34 that is a collision portion is disposed outside the two gas-liquid ejection holes 33. The baffle plate 34 is attached to each of the two gas-liquid ejection holes 33 with a predetermined interval by four support columns 35 extending from the vessel body 30.

  The operation and action of the carbonated enriched bathtub hot water circulating apparatus configured as described above will be described below. By reducing the pressure by the vacuum pump 19, the exhaust gas of the hot water combustor 21 passes through the heat exchanger 22, passes through the carbon dioxide enriched film 17, becomes high-concentration carbon dioxide gas, passes through the carbonate pipe 23, and enters the circulation circuit 14. It is mixed, temporarily stored in the dissolution tank 27, and ejected to the bathtub 12 together with the bath water circulated from the discharge port 26.

  When the pump 15 is operated, a suction force of the pump is generated, and hot water in the bathtub 12 is sucked into the pump 15 from the suction port 25 and from the carbonic acid suction port 24 through the circulation circuit 14. A portion of the high-concentration carbon dioxide gas is pressurized and dissolved in hot water in the portion from the pump 15 through the circulation circuit 14 to the dissolution tank 27. The hot water containing most of the high-concentration carbon dioxide gas that could not be dissolved in the dissolution tank 27 becomes a gas-liquid two-layer mixed water, and is conveyed to the fine bubble generating section 28 through the circulation circuit 14. The The mixed water that has entered the hollow portion 29 of the vessel body 30 through the inlet 31 through the pressurized liquid introduction pipe 32 flows in from the tangential direction of the inner peripheral wall, and thus swirls along the peripheral wall of the hollow portion 29. Due to the swirling motion of the water flow, a pressure difference is produced between the outer periphery and the center of the swirl, and the larger the swirl speed, the greater the pressure difference between the outer periphery and the center. become. Then, the high-concentration carbon dioxide gas converges on the rotationally symmetric shaft portion of the vessel body 30 serving as the turning center due to the difference in specific gravity between the gas and the liquid, thereby forming a thin string-like gas shaft 36.

  Since the mixed water in the hollow portion 29 flows out of the gas-liquid jet holes 33 as it approaches the two gas-liquid jet holes 33 while turning, the turning radius is reduced and the flow path is also narrowed. In the vicinity, the turning speed and pressure become maximum, and the water on the outside side and the outlet of the gas-liquid jet hole 33 are pressed against each other. The high-concentration carbon dioxide gas collected on the gas shaft 36 is compressed and sheared at the boundary surface or boundary region between the external water and the swirling mixed water, and is formed into two gas-liquid ejection holes as fluid containing fine bubbles. 33 is ejected into the outside water. A large amount of the ejected fluid is generated as fine bubbles of high-concentration carbon dioxide, including those that are sheared by the ejected flow.

  Thus, the gas-liquid is vigorously contacted by the swirling flow of the mixed water, causing friction and shearing. At the time of this contact, carbon dioxide dissolves in the hot water, and the swirling flow in the vessel having the gas axis As the gas shaft is sheared while being ejected more, high-concentration carbon dioxide becomes a large amount of fine bubbles on the order of microns, and the contact area with hot water increases remarkably, so that more carbon dioxide is easily dissolved in hot water. In general, when the free carbonate concentration in the carbonate bath exceeds about 100 ppm, the blood circulation promotion effect by bathing becomes remarkable, and there is an excellent physiological effect in addition to the thermal effect and fatigue recovery, but in this way a carbonate spring with a large free carbonate concentration Can be made at low cost with a simple configuration.

  In the present embodiment, the inlet 31 connected to the pressurized liquid introduction pipe 32 is provided in a tangential direction on the peripheral wall of the container body 30, but the velocity component is applied in the rotational symmetry axis direction of the container body 30. Even if the inlet 31 is tilted so as to have an opening, if the inflow speed of the mixed water is sufficiently high, a swirling flow is generated and a gas axis is generated on the rotationally symmetric axis. The same effect can be obtained by promoting dissolution of carbon dioxide gas.

  Further, by introducing the pressurized liquid in the tangential direction of the peripheral wall portion of the hollow body portion 29, it becomes possible to generate a strong swirling flow in the hollow body, so that the contact degree and shear of the gas-liquid increase, and the bathtub Dissolution of carbon dioxide in hot water is further promoted, and a carbonated spring having a high free carbonic acid concentration can be produced with a simple structure at low cost.

  As a result, the bather can take a bath in a high-concentration carbonated spring obtained from the exhaust of the hot water combustor 21, and the carbonate component in the carbonated spring acts on the capillary under the skin to expand the capillary. As a result, the blood circulation of the bather is improved, and the fatigue and health of the bather can be improved. In addition, the percutaneous entry of carbon dioxide gas causes an increase and expansion of the capillary bed, and it is possible to enjoy the therapeutic effects of degenerative lesions and peripheral circulation disorders, which are said to be effective by improving the blood circulation of the skin. it can.

  Since the hollow portion 29 in the container 30 is tapered toward the gas-liquid ejection hole 33, the swirl radius of the liquid swirl becomes smaller as the gas-liquid ejection hole approaches the gas-liquid ejection hole, and the flow path becomes narrower. As the flow rate increases, the degree of contact between the gas and liquid and the shearing force that accompany the increase in speed increase, miniaturization of bubbles is promoted, and the dissolution of carbon dioxide in the bath water advances. Can be made at low cost.

  In addition, even after the liquid containing dissolved gas has generated fine bubbles due to sudden decompression immediately after exiting the gas-liquid jet holes, the jet flow further vigorously collides with the collision part downstream so that the fine bubbles and their nuclei As a result, more high-concentration carbonic fine bubbles are generated, so that it is possible to achieve both the prevention of dust adhesion and the generation of a large amount of fine bubbles.

  Furthermore, since the gas-liquid ejection holes 33 are opened on both sides of the pivot shaft end, the number of gas-liquid ejection holes can be increased to increase the amount of fine bubbles coming out of the gas-liquid ejection holes. By increasing the contact area with hot water, more carbon dioxide can be easily dissolved in hot water, and a carbonated spring having a high free carbonic acid concentration can be produced with a simple structure at low cost.

(Embodiment 2)
FIG. 4 is an overall system configuration diagram of the carbonated bath apparatus according to the second embodiment of the present invention, and FIG. 5 is a perspective view of a fine bubble generating unit of the carbonated bath apparatus according to the second embodiment of the present invention. 6 is a cross-sectional view of the fine bubble generating portion. In addition, the thing of the same structure as the carbonated bath apparatus of 1st Embodiment gives the same code | symbol, and abbreviate | omits description. 4 to 6, the difference from the configuration of the first embodiment is that there are two gas-liquids in the rotationally symmetric hollow portion 29 formed in a substantially elliptical spherical shape without a carbonic acid suction port in the middle of the circulation circuit 14. A baffle plate 34 is provided outside the ejection hole 33, and a carbonic acid suction part 37 is opened toward one side of the baffle plate 34 toward the body 30 at a position where it intersects with a line extending the pivot axis. The point is that it is connected to a carbonic acid suction part 37 which is the end of the circulation circuit 14.

  The operation and action of the above configuration will be described. When the pump 15 is operated in the carbonated bath apparatus of the embodiment shown in the figure, the sucked bath water is conveyed to the fine bubble generating part 28 through the circulation channel 14. The bath water that has entered the hollow portion 29 of the container body 30 from the inlet 31 flows in from the tangential direction of the inner peripheral wall, and thus swirls along the peripheral wall of the hollow portion 29. Due to the swirling motion of the water flow, a pressure difference is generated between the swirling outer peripheral portion and the central portion, and the swirling outer peripheral portion has a high pressure and the central portion has a low pressure. Negative pressure on the extension line. The carbon dioxide enricher 16 is operated and the exhaust gas from the hot water combustor 21 passes through the carbon dioxide enriched film 17 through the heat exchanger 22 by being depressurized by the vacuum pump 19, and becomes a high concentration carbon dioxide gas. 23 and sucked from the carbon dioxide suction part 37 to the negative pressure part of the turning shaft. As a result, the gas shaft 36 is formed at the rotationally symmetric shaft portion of the vessel body 30 as the turning center, and the gas-liquid is vigorously contacted to generate friction and shear.

  Thus, since the swirling outer peripheral portion has a high pressure and the central portion has a low pressure, the swirling shaft portion of the swirling flow in which the gas shaft 36 exists has a negative pressure, and the carbon dioxide suction portion 37 provided on the baffle plate 34 which is a collision portion. The high-concentration carbon dioxide gas can be self-absorbed from the air, so the supply configuration of the high-concentration carbon dioxide becomes simple, and the body shape can be freely configured, such as increasing the number of gas-liquid jet holes or configuring the swirl flow strengthening. Since the degree of carbon dioxide dissolution can be increased, a carbonated spring having a high free carbonic acid concentration can be produced with a simple structure and at a low cost.

(Embodiment 3)
FIG. 7 is an overall system configuration diagram of the carbonated bath apparatus according to the third embodiment of the present invention, and FIG. 8 is a cross-sectional view of a fine bubble generating portion of the carbonated bath apparatus according to the third embodiment of the present invention. . In addition, the thing of the same structure as the carbonated bath apparatus of 1st Embodiment and 2nd Embodiment gives the same code | symbol, and abbreviate | omits description. 7 and 8, the difference from the configuration of the first embodiment and the second embodiment is that the carbon dioxide enriching device 38 includes a carbon dioxide cylinder 39, a pressure regulator 40, and a flow rate adjustment valve 41. The carbon dioxide gas discharged from the carbon dioxide cylinder 39 passes through the pressure regulator 40 and is adjusted to a predetermined flow rate that is dissolved in the bath water by the flow rate control valve 41, flows into the carbonate pipe 23, and is mixed into the bath water from the carbon dioxide suction port 24. . The fine bubble generating part 28 is configured to have a hollow body 42 formed in a truncated cone shape, and a gas-liquid jet hole 44 is provided on the small bottom circle side of the rotationally symmetrical axis end of the hollow part 42. It is in the point.

  The operation and action of the above configuration will be described. When the pump 15 is operated in the carbonated bath apparatus of the embodiment shown in the figure, the sucked bath water and the high-concentration carbon dioxide gas supplied from the carbonated suction port 24 become mixed water and are conveyed to the fine bubble generating unit 28. The The air-mixed water that has entered the hollow portion 42 of the vessel body 43 from the inlet 31 through the circulation channel 14 flows in from the tangential direction of the inner peripheral wall, and thus swirls along the peripheral wall of the hollow portion 42. A gas shaft 36 is formed on the rotationally symmetric shaft portion of the vessel body 43 serving as a turning center by the swirling motion of the water flow. Since the mixed water in the hollow portion 42 has a tapered shape in which the cross-sectional area decreases as it approaches the gas-liquid ejection hole 44 while turning, the turning radius becomes smaller and the flow path becomes narrower. In the vicinity, the turning speed becomes maximum, and the degree of gas-liquid contact and the shearing force accompanying the increase in speed increase.

  Thus, by making the shape of the hollow part 42 in the container body 43 taper toward the gas-liquid ejection hole, the swirl radius of the liquid swirl becomes smaller as the gas-liquid ejection hole 44 approaches, and the flow path is also reduced. Because the gas is narrowed, the degree of gas-liquid contact and shearing force are increased, the finer bubbles are promoted, and the dissolution of carbon dioxide in the bath water advances, making a carbonated spring with a high free carbonic acid concentration simple and low cost. Can do.

(Embodiment 4)
FIG. 8 is a cross-sectional view of the fine bubble generating portion of the carbonated bath apparatus according to the fourth embodiment of the present invention. In addition, the thing of the same structure as the carbonated bath apparatus of the 1st-3rd embodiment gives the same code | symbol, and abbreviate | omits description. In FIG. 8, the difference from the configuration of the first to third embodiments is that the body 46 is formed in a bottomed and covered cylindrical shape so as to have a hollow portion 45 formed in a columnar shape, and a gas-liquid ejection hole 47 is opened at one of both axial ends of the rotationally symmetric axis of the hollow part 45, and the inlet 31 to the body 46 is provided closer to the gas-liquid ejection hole 47 than the axial center of the rotationally symmetric axis. An impeller 49 having a plurality of radial blades 48 in the vicinity of the peripheral wall portion and having a swirl flow swirl axis as a rotation axis is provided in the hollow portion 45.

  The operation and action of the above configuration will be described. By operating the pump 15 in the bubble generator of the embodiment shown in the figure, the mixed water of the high-concentration carbon dioxide gas supplied from the bath water that has been sucked in and the carbonic acid suction port 24 is supplied from the inlet 31 to the body. 46 flows into the hollow portion 45 from the tangential direction of the inner peripheral wall. This flow swirls along the peripheral wall of the hollow portion 45, and the impeller 49 rotates with the swirl flow by pushing the blades 48 on the peripheral wall portion of the hollow portion 45 in the circumferential direction, thereby generating a stable swirl flow. A gas shaft 36 is formed at the rotationally symmetric shaft portion of the vessel body 46 serving as a turning center by the swirling motion of the water flow. At this time, the hollow portion 45 becomes a substantially planar cylindrical space whose both ends are rotationally symmetric and perpendicular to the axis, and the liquid flows in a tangential direction from the circumferential portion of the cylindrical space. Since there is almost no flow velocity component in the axial direction and only the flow velocity component of the swirl perpendicular to the swivel axis can be generated, a strong and stable swirl flow can be generated, so that the gas-liquid contact becomes intense and the gas shaft Formation of 36 becomes easy.

  When the swirling flow in the vessel 46 having the gas shaft 36 is ejected from the gas-liquid ejection hole 47, the gas shaft 36 is sheared to become micron-sized fine bubbles, and a large amount of fine bubbles of high-concentration carbon dioxide gas is formed. Can be generated. And since it becomes a lot of fine bubbles from which high concentration carbon dioxide gas was ejected, the contact area with hot water is remarkably increased, and dissolution into hot water is promoted. In this way, a strong and stable swirl flow enhances gas-liquid contact and shear, and by increasing the amount of fine bubbles generated, the amount of dissolved carbon dioxide can be increased, and a carbonated spring with a high free carbonic acid concentration can be easily configured. Can be made at low cost.

  In addition, since the swirl flow is more stably generated by the action of the impeller 49 without being disturbed by the flow velocity component in the swirl axis direction, the gas-liquid contact and shear are strengthened, and the air bubble shear refinement effect by the blades is also improved. In addition, the amount of dissolved carbon dioxide can be increased by promoting the generation of a large amount of fine bubbles, and a carbonated spring with a high free carbonic acid concentration can be produced with a simple structure at low cost.

  Furthermore, by arranging the inlet 31 close to the gas-liquid ejection hole 47 side and providing a sufficient distance from the inlet 31 to the other end of the body symmetry axis, the mixed water introduced from the inlet 31 can be reduced. The swirl flow can be grown and promoted toward the other end without going to the gas-liquid jet hole 47 immediately, so that the swirl flow is stabilized, the gas-liquid contact and shear are strengthened, and the generation of a large amount of fine bubbles is promoted. By doing so, the amount of carbon dioxide dissolved can be increased, and a carbonated spring having a high free carbonic acid concentration can be produced at a low cost with a simple configuration.

  In the present embodiment, a plurality of radial blades 48 are provided in the vicinity of the peripheral wall portion of the hollow portion 45 with respect to the inflow port 31 opened tangentially to the peripheral wall of the vessel body 46, and swirling of the swirling flow Although the impeller 49 having the shaft as the rotation shaft is provided in the hollow portion 45, it may be an impeller that turns by receiving the force of the water flow from the circulation flow path 14. For example, the peripheral wall of the hollow portion 45 Similar effects can be obtained by a configuration using a substantially radial twist blade in the vicinity of the portion or a combination of an inlet and a twist blade provided inclined from the tangential direction of the peripheral wall of the vessel body 46.

(Embodiment 5)
FIG. 9 is a perspective view of the fine bubble generating part of the carbonated bath apparatus according to the fifth embodiment of the present invention. In addition, the thing of the same structure as the carbonated bath apparatus of 1st-4th embodiment gives the same code | symbol, and abbreviate | omits description. In FIG. 9, the difference from the configurations of the first to fourth embodiments is that the container body 46 is configured in a bottomed and covered cylindrical shape so as to have a hollow portion 45 formed in a columnar shape, and the periphery of the container body 46. Two inflow ports 50 opened in a tangential direction are provided at positions opposed to each other across the rotational symmetry axis on the wall circumference, and mixed from the two inflow ports 50 through two branched pressurized liquid introduction pipes 51. Gas water is sent to the hollow portion 45, and the gas / liquid ejection hole 47 opens to one of both axial ends of the rotational symmetry axis of the hollow portion 45, and the two inflow ports 50 serve as the gas / liquid ejection hole 47. The distance between the inflow port 50 and the gas-liquid jet hole 47 is shorter than half of the axial length of the rotational symmetry axis.

  The operation and action of the above configuration will be described. By operating the pump 15 in the bubble generating device of the embodiment shown in the figure, the mixed water of the high-concentration carbon dioxide gas supplied from the bath water that has been sucked in and the carbonic acid suction port 24 is supplied from the two inflow ports 50. It flows into the hollow part 45 of the container body 46 from the tangential direction of the inner peripheral wall and turns along the peripheral wall of the hollow part 45. A gas shaft 36 is formed at the rotationally symmetric shaft portion of the vessel body 46 serving as a turning center by the swirling motion of the water flow. At this time, the hollow portion 45 becomes a substantially planar cylindrical space whose both ends are rotationally symmetric and perpendicular to the axis, and the liquid flows in a tangential direction from the circumferential portion of the cylindrical space. Since the flow velocity component in the axial direction is almost eliminated and only the flow velocity component of the swirl perpendicular to the swivel axis can be obtained, a strong and stable swirl flow can be generated, and the contact between the gas and the liquid becomes intense. When the swirl flow in the vessel 46 having the gas shaft 36 is ejected from the gas-liquid ejection hole 47, the gas shaft is sheared into fine bubbles, and the high-concentration carbon dioxide gas is ejected as a large amount of fine bubbles. Therefore, the contact area with hot water is remarkably increased and dissolution in hot water is promoted.

  In this way, a strong and stable swirl flow enhances gas-liquid contact and shear, and by increasing the amount of fine bubbles generated, the amount of dissolved carbon dioxide can be increased, and a carbonated spring with a high free carbonic acid concentration can be easily configured. Can be made at low cost.

  In addition, since two inflow ports 50 are provided on the same circumference of the swirl flow and swirl is promoted from a plurality of locations in the same rotation direction, a strong and stable swirl flow can be generated, and the swivel center gas axis The amount of dissolved carbon dioxide can be increased by promoting the generation of a large amount of fine bubbles, while ensuring the formation of water and gas and liquid contact and shearing. Can be made.

  In the present embodiment, the two inflow ports 50 are provided at opposing positions on the circumference of the peripheral wall of the vessel 46. However, the predetermined interval is not required even when facing the same circumference of the peripheral wall of the hollow portion 45. A similar effect can be obtained even when two or more of the components are arranged.

  As described above, the carbonated bath apparatus according to the present invention enhances the gas-liquid contact and increases the amount of dissolved carbon dioxide by advancing the generation of a large amount of fine bubbles of high-concentration carbon dioxide gas. A large carbonated spring can be made easily and at low cost, so it can be used for aeration equipment for increasing the concentration of dissolved carbonate, reforming equipment for drinking water and food, not only for whole body baths but also for partial baths and other methods. It can be applied to uses such as health welfare equipment and gas-liquid reaction equipment.

Overall configuration diagram of carbonated bath apparatus in Embodiment 1 of the present invention The perspective view of the fine bubble generation | occurrence | production part of the carbonated bath apparatus in Embodiment 1 of this invention Sectional drawing of the fine bubble generation | occurrence | production part of the carbonated bath apparatus in Embodiment 1 of this invention Whole block diagram of carbonated bath apparatus in Embodiment 2 of the present invention The perspective view of the fine bubble generation | occurrence | production part of the carbonated bath apparatus in Embodiment 2 of this invention Sectional drawing of the fine bubble generation | occurrence | production part of the carbonated bath apparatus in Embodiment 2 of this invention Whole block diagram of carbonated bath apparatus in Embodiment 3 of the present invention Sectional drawing of the fine bubble generation | occurrence | production part of the carbonated bath apparatus in Embodiment 3 of this invention Sectional drawing of the fine bubble generation | occurrence | production part of the carbonated bath apparatus in Embodiment 4 of this invention The perspective view of the fine bubble generation | occurrence | production part of the carbonated bath apparatus in Embodiment 5 of this invention Overall configuration of conventional carbonated bath equipment Overall configuration of conventional carbonated bath equipment

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Bath hot water circulation device 12 Bath 14 Circulation circuit 16 Carbonation enrichment device 23 Carbonation piping 29 Hollow part 30 Body 31 Inlet 32 Pressurization liquid introduction pipe 33 Gas-liquid ejection hole 34 Collision part 37 Carbonation suction part 38 Carbonation enrichment apparatus 42 hollow part 43 container 44 gas-liquid ejection hole 45 hollow part 46 container 47 gas-liquid ejection hole 48 blade 49 impeller 50 inflow port 51 pressurized liquid introduction pipe

Claims (9)

A bath hot water circulation device and a circulation circuit through which hot water in the bathtub circulates, a carbonate enrichment device for supplying high-concentration carbon dioxide gas, a carbonate pipe provided between the carbonate enrichment device and the circulation circuit, A vessel having a hollow portion provided at the end of the circulation circuit for flowing hot water into the bathtub, an inlet opening in the vessel, and a pressurized liquid introduction pipe connected from the circulation circuit to the inlet A gas-liquid jet hole opened in the vessel body, and introduces hot water from the bath and high-concentration carbon dioxide gas coming out of the carbonic acid enrichment device into a swirl flow in the vessel body and jets from the gas-liquid jet hole This is a carbonated bath device that dissolves carbon dioxide in hot water. The carbonated bath apparatus according to claim 1, wherein the hollow part of the vessel body is formed substantially rotationally symmetric, and the inflow port is opened in a tangential direction to the peripheral wall part of the vessel body. The carbonated bath apparatus according to claim 2, wherein a plurality of inflow ports opened in a tangential direction to the peripheral wall portion of the vessel body are provided at predetermined intervals on the circumference of the peripheral wall portion of the vessel body. The carbonated bath device according to any one of claims 1 to 3, wherein the container is formed in a substantially hollow cylindrical shape. The carbonated bath apparatus of any one of Claims 1-4 provided with the collision part which has a predetermined space | interval with the gas-liquid ejection hole of a container, and an ejection flow collides with the said exterior of a container. The carbonated bath apparatus according to any one of claims 1 to 5, wherein a bladed wheel is provided in the vicinity of the peripheral wall portion of the container hollow portion, and an impeller having a rotating shaft as a rotation axis is provided in the container body. The gas-liquid ejection hole is provided at least at one of both ends of the swirling axis of the swirling flow, and includes a collision portion having a predetermined distance from the gas-liquid ejection hole and colliding with the ejection flow outside the vessel body. The carbonated bath apparatus of any one of Claims 1-6 which provided the carbonic acid suction part connected with carbonic acid piping on the extension line of the said rotating shaft of the said collision part. The carbonated bath device according to any one of claims 1 to 7, wherein the gas-liquid ejection holes are opened on both sides of the swirl shaft end of the swirl flow. The gas-liquid ejection hole opens at at least one of both axial ends of the swirling axis of the swirling flow, and the vessel body has a tapered shape whose cross-sectional area decreases toward the gas-liquid ejection hole. The carbonated bath apparatus according to item.

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