WO2010024253A1 - Air-dissolved water production device - Google Patents

Abstract

Disclosed is an air-dissolved water production device that is equipped with a tank, which is equipped with a liquid inlet and a liquid outlet, and a spray path, which is connected to the liquid inlet and disposed so as to be connected to a water supply source. This is configured so that water can be sprayed into the tank via the spray path to produce air-dissolved water, in which air is thereby dissolved in the water. The tank is equipped with a bulkhead which divides the interior of the tank into a mixing chamber and a separation chamber. The fluid inlet is disposed in the mixing chamber and the outlet is disposed in the separation chamber, so that the separation chamber receives air-dissolved water, which contains air bubbles, from the mixing chamber via the connection passage, the aerated water and air bubbles are separated, the air-dissolved water that has been separated is supplied to the outside from the liquid outlet, while the air bubbles that have been separated are supplied into the air retained in the upper portion of the separation chamber. Furthermore, a return line is provided, which connects the separation chamber to the spray path, to send air retained in the upper portion of the separation chamber to the spray path.

Description

Air dissolved water generator

The present invention relates to an air-dissolved water generating apparatus used for generating hot water in which fine bubbles are generated. Specifically, the present invention relates to an air-dissolved water generating apparatus configured to create gas-dissolved water in which air is dissolved in water, and subsequently create hot water containing fine bubbles from the gas-dissolved water. Moreover, this invention relates to the bathtub provided with the air dissolution water production | generation apparatus.

Japanese Laid-Open Patent Publication No. 2007-313464 discloses a conventional air-dissolved water generator. A conventional air-dissolved water generating apparatus includes a tank and a pump. The tank has a cylindrical shape and has a length along the axial direction. The tank is arranged such that the axial direction is inclined with respect to the horizontal direction and the vertical direction, whereby the tank has a first end located at a position higher than the second end in the axial direction. The tank includes a liquid inlet, a liquid outlet, and an air outlet. The liquid inlet is formed on the outer peripheral surface of the tank so as to be located on the first end side. The liquid outlet is formed on the outer peripheral surface of the tank so as to be positioned on the second end side of the tank. The liquid inlet and the liquid outlet are directed downward. The air outlet is formed on the outer peripheral surface of the tank so as to be located on the second end side of the tank. The air inlet is directed upward. The pump is connected to a water source. The pump is in communication with the pump so as to eject water into the pump through the liquid inlet.

In the conventional air-dissolved water generating apparatus, the pump ejects water or water mixed with gas into the tank through the liquid inflow port. The water ejected into the tank mixes with the air in the tank. As a result, water in which gas is dissolved and bubbles are included is created. The water in which the gas is dissolved is so-called gas-dissolved water. This gas-dissolved water flows below the tank. The dissolved gas that has flowed below the tank is sent from the tank to a bathtub or the like via the liquid outlet. On the other hand, when large bubbles remain in the gas dissolved water flowing below the tank, it is separated into liquid and gas again in the tank. When the liquid sent from the pump is water mixed with gas, air is continuously supplied into the tank together with water. This air is discharged from a gas discharge port provided in the tank.

However, in the conventional air-dissolved water generating apparatus, there is a problem that a lot of undissolved gas tends to accumulate in the tank. The undissolved gas in the tank is difficult to dissolve in the water in the tank. Therefore, the conventional air-dissolved water generating apparatus has a problem that it is difficult to create gas-dissolved water with high efficiency. In order to reduce this undissolved gas, it is necessary to lengthen the contact time between the gas stored in the tank and water. However, if this time is increased, the path for contact becomes longer, and the device There is a problem of increasing the size.

In addition, by connecting the air-dissolved water generating device to the bathtub, supplying the water stored in the bathtub by the pump to the air-dissolved water generating device, returning the air-dissolved water flowing out from the liquid outlet to the bathtub and circulating it, A fine bubble is generated from air-dissolved water to form a bathtub with an air-dissolved water generator. At this time, when air bubbles having a large diameter are mixed in the air-dissolved water, the air bubbles having a large diameter are also mixed in the fine air bubbles, and the quality of the bath water is deteriorated.

The present invention has been made to solve the above problems. An object of the present invention is to provide an air-dissolved water generating apparatus configured to generate gas-dissolved water with high efficiency and reduce outflow of undissolved bubbles.

In order to solve the above-described problems, an air-dissolved water generating apparatus according to the present invention is connected to a tank having a liquid inlet and a liquid outlet, and to the liquid inlet, and is connectable to a water supply source. The water flowing through the ejection path is configured to be ejected into the tank, whereby water and air are mixed in the tank, and gas is introduced into the water. Dissolved gas-dissolved water is created, the tank is provided with a partition, the partition partitions the inside of the tank into a mixing chamber and a separation chamber, and the partition is arranged apart from the bottom of the tank. Thus, a communication path is formed for communicating the mixing chamber and the separation chamber, the liquid inlet is provided in the mixing chamber, and the liquid outlet is provided in the separation chamber, The separation chamber is connected via the communication path. The gas-dissolved water containing bubbles is received from the mixing chamber, the gas-dissolved water and the bubbles are separated, and the separated gas-dissolved water is provided to the outside from the liquid outlet, and the separated bubbles are separated. A return line for staying in the upper part of the separation chamber together with the gas staying in the upper part of the chamber, communicating the separation chamber and the ejection path, and sending the gas staying in the upper part of the separation chamber to the ejection path; It is characterized by.

In this case, gas dissolved water can be generated with high efficiency.

The separation chamber is preferably formed with an air outlet at the upper end thereof, and one end of the return line is connected to the air outlet.

It is preferable that an air inlet is formed at the lower end of the mixing chamber, and one end of the return line is connected to the air inlet.

It is preferable that an air inlet is formed in the ejection path, and one end of the return line is connected to the air inlet.

The ejection path includes an ejector and a pipe, and the ejector includes a first end connected to a first end of the pipe and a second end connected to a tank, and the first of the ejector An air inlet is formed at an end, and the ejector and the pipe have a flow path therein, and a cross-sectional area of the flow path at the first end of the ejector is equal to a flow rate at the first end of the pipe. Preferably, the return line is formed larger than the cross-sectional area of the passage, and one end of the return line is connected to the air inlet.

In this case, the air sent to the ejection path by the return line can be efficiently dissolved in the water flowing through the ejection path.

And it is preferable that the air inlet is provided in the ejector. And it is preferable that the air inflow port is provided in the 1st end of the ejector.

The separation chamber is preferably provided with an air release valve at its upper end.

The water mixed with air from the ejection path is configured to be ejected to the mixing chamber, and the volume per unit time of the air discharged from the air release valve is the water ejected from the ejection path. It is preferable that the air content is set to 20% or more of the volume per unit time.

The separation chamber is divided into a first sub-separation chamber and a second sub-separation chamber by a baffle, and the upper end of the baffle is separated from the upper surface of the tank, whereby the first sub-separation chamber and the second sub-separation chamber are separated from each other. A communication port that communicates with the sub-separation chamber is formed, and gas-dissolved water containing bubbles sent from the mixing chamber is guided to the second sub-separation chamber through the first sub-separation chamber. The liquid outlet is preferably formed at the lower end of the second sub-separation chamber.

In addition, the liquid outlet is provided at the bottom of the second subseparation chamber, and the flow rate of the liquid flowing through the second subseparation chamber with respect to the flow rate of the liquid flowing out from the liquid outlet is reduced to 1/5 or less. It is preferable that the cross-sectional area of the liquid separation tank is set.

In this case, when the gas-dissolved water containing bubbles flows from the first sub-separation chamber to the second sub-separation chamber via the upper end of the baffle, the bubbles can be separated from the gas-dissolved water with high efficiency.

The tank has an upper wall defining an upper end inner wall of the separation chamber, and an upper end inner wall of the second sub-separation chamber is inclined continuously downward from the upper end inner wall of the first sub-separation chamber. Preferably, the return line is connected to the upper wall of the tank above the first sub-separation chamber.

In this case, air can be sent to the ejection path at a high rate from the return line.

The air-dissolved water generating apparatus further includes an air discharge valve, and the air discharge valve is formed of a barrel having a float therein, and the air discharge valve is an upper wall of the tank above the second sub separation chamber. Preferably, the barrel has a lower end positioned lower than the barrel, and an opening is formed at the lower end of the side surface of the barrel.

The baffle and the partition have one surface facing each other, projecting toward either the baffle or the partition toward the other of the baffle or the partition, and extending in the height direction of the tank It is preferable that a guide plate is formed.

In this case, the gas-dissolved water containing bubbles flowing through the first sub-separation chamber can be efficiently separated into bubbles and gas-dissolved water at the upper part of the first sub-separation chamber.

The baffle preferably has an extension plate extending toward the upper surface of the tank at the center of the upper end thereof.

In this case, the gas-dissolved water containing bubbles flowing from the first sub-separation chamber to the second sub-separation chamber can be efficiently separated into bubbles and gas-dissolved water.

The separation chamber is preferably provided with a rectifying plate extending downward from the upper surface thereof, and the rectifying plate is preferably formed in a direction intersecting with the width direction of the extending plate.

In this case, the bubbles and the gas-dissolved water can be efficiently separated from the gas-dissolved water containing the bubbles flowing from the upper part to the lower part of the second sub-separation chamber.

The air-dissolved water generating device is attached to the bathtub, provided in a circulation channel that sucks hot water in the bathtub from the suction port at one end and ejects it from the liquid outlet at the other end into the bathtub, and is provided from the liquid outlet It is preferable that fine bubbles are ejected from the liquid outlet into the bathtub by the dissolved gas.

Also, the air dissolved water generator is placed in the bathroom. The bathroom includes a bathtub, a washing place provided adjacent to the bathtub, and a cover for covering the surface of the bathtub on the washing place side, whereby a storage space is provided between the cover and the bathtub. The bath is provided in a circulation flow path in which the air-dissolved water generator sucks hot water in the bathtub from the suction port at one end and ejects it from the liquid outlet at the other end into the bathtub. The gas dissolved water provided from the liquid outlet exits fine bubbles from the liquid outlet into the bathtub, the cover defines the boundary between the washing area and the bathtub, and the air dissolved water generator is the storage It is arrange | positioned in space and it is preferable that the soundproofing material is arrange | positioned between the said air dissolved water production | generation apparatus and the said cover.

It is a perspective view which shows the basic structure of the air dissolution water production | generation apparatus of this invention. It is the schematic of the side cross section of the basic structure of the air dissolution water generating apparatus of this invention. It is the schematic of the side cross section of the ejector of this invention. It is side surface sectional drawing which shows the basic structure of the air dissolution water generating apparatus of this invention. It is the schematic of the side surface cross section of the air dissolution water production | generation apparatus of this invention. It is the perspective view in which a part of tank of Embodiment 1 of the present invention was decomposed. It is a side view of the air dissolution water generating device of Embodiment 1 of the present invention. FIG. 8 is a side cross-sectional view taken along the line AA in FIG. 7 of the air-dissolved water generating device according to the first embodiment of the present invention. FIG. 8 is a cross-sectional side view taken along the line BB in FIG. 7 of the air-dissolved water generating device according to the first embodiment of the present invention. It is side surface sectional drawing of the air dissolution water generating apparatus of Embodiment 1 of this invention. It is a perspective view of the air dissolution water generating device of Embodiment 1 of the present invention. It is a rear view of the air dissolution water generating device of Embodiment 1 of the present invention. It is the perspective view in which a part of tank of Embodiment 1 of the present invention was decomposed. It is side surface sectional drawing of the air release valve of Embodiment 1 of this invention. It is the perspective view in which a part of tank lower part of Embodiment 1 of the present invention was decomposed. It is a partially expanded sectional view of the tank lower part of Embodiment 1 of this invention. It is the graph which showed the mode of a raise of dissolved oxygen concentration when changing the exhaust_gas | exhaustion ratio of the air dissolution water production | generation apparatus of Embodiment 1 of this invention. It is the graph which showed the relationship between the exhaust_gas | exhaustion cost of the air dissolution water production | generation apparatus of Embodiment 1 of this invention, and dissolved oxygen concentration raise. It is a perspective view of the air dissolution water generating device of Embodiment 2 of the present invention. It is a partial expanded sectional view of the air dissolution water generating device of Embodiment 2 of the present invention. It is a partial expanded sectional view of the air dissolution water generating device of the change mode of Embodiment 2 of the present invention. It is the schematic diagram which showed the relationship between the air dissolution water production | generation apparatus of Embodiment 1 of this invention, and a bathtub. It is the schematic diagram which showed arrangement | positioning in the bathroom of the air dissolution water production | generation apparatus of this invention.

FIG. 1 is a perspective view showing a basic structure of an air-dissolved water generating apparatus according to an embodiment of the present invention. As shown in FIGS. 1 to 5, the air-dissolved water generating apparatus 1 includes a sealed tank 2, a pump 7, and a return line 12. The tank 2 includes a liquid inlet 4 and a liquid outlet 8 at the bottom thereof. The tank 2 is provided with an air outlet 13 at the upper end. A water supply path 5 is attached to the liquid inlet 4 via an ejector 17 having an air inlet 14 formed on a side surface. The liquid outlet 8 is provided for sending gas-dissolved water, which will be described later, via the pipe 9. The return line 12 has a first end connected to the air outlet 13 and a second end connected to the air inlet 14. The pump 7 communicates with the tank 2 through the ejector 17 and the water supply path 5. The pump 7 is connected to a water supply source (not shown). The pump 7 ejects the water in the water supply source into the tank 2 through the water supply path 5 and the ejector 17. Alternatively, the pump 7 ejects the water in the water supply source mixed with external air into the tank 2 through the water supply path 5 and the ejector 17. Accordingly, the pump 7 ejects water having a predetermined water pressure into the tank 2.

FIG. 3 shows an enlarged cross-sectional view of the ejector 17 and the water supply path 5. The ejector 17 includes a first end 171 and a second end 172. The water supply path 5 also includes a first end 51 and a second end. The first end 171 of the ejector 17 is connected to the first end 51 of the water supply path 5. A second end 172 of the ejector 17 is connected to the tank 2. A second end of the water supply path 5 is connected to the pump 7. Each of the ejector 17 and the water supply path 5 has a flow path therein. The cross-sectional area of the flow path at the first end 171 of the ejector 17 is set larger than the cross-sectional area of the flow path at the first end 51 of the water supply path 5. Further, the inner diameter of the ejector 17 is gradually increased from the first end toward the second end. An air inflow port 14 is formed in the ejector 17 so as to be located at a connection portion between the ejector 17 and the water supply path 5.

Such an air-dissolved water generating apparatus 1 operates as follows. Before the pump 7 is started, the tank 2 is filled with air. When the pump 7 is started, the pump 7 ejects water in the water supply source into the tank 2. When the pump 7 ejects water into the tank, the water ejected into the tank collides with the wall of the tank 2 and the like. Further, since the pump 7 continues to eject water into the tank, the water accumulates in the tank 2. The water accumulated in the tank 2 collides again with the water splashed by colliding with the wall of the tank 2 or the like. Further, since the pump 7 continues to spout water into the tank 2, the water in the tank 2 is agitated by the water sent from the pump 7.

The gas accumulated in the tank 2 due to such a collision is mixed with the water 11. When air is mixed with water, the water contains large bubbles. Then, when the water is stirred in the tank 2, a shearing force is generated in the water. Shear force is applied to large bubbles mixed in water. Large bubbles subjected to shearing force are divided into fine bubbles. By separating the large bubbles into fine bubbles, the gas is easily dissolved in water. As a result, air dissolves in water, thereby creating gas-dissolved water. The gas-dissolved water is sent to a bathtub or the like via the liquid outlet 8. The dissolved gas sent to the bath is exposed to atmospheric pressure. As a result, fine bubbles are generated from the air dissolved in the water of the gas dissolved water. These fine bubbles remain in the water. In this way, water containing fine bubbles is provided to the bathtub or the like. On the other hand, the air that did not dissolve in water in the tank 2 floats and is separated above the tank 2 as bubbles, and these bubbles stay with the gas that stays in the upper part of the tank.

The air accumulated in the upper part of the tank is sent to the ejector 17 through the return line 12. More specifically, the pump 7 continues to supply water to the tank 2 via the liquid inlet 4 via the water supply path 5 and the ejector 17 during the operation of the air-dissolved water generating apparatus 1. Water sent from the pump 7 to the tank 2 through the ejector 17 pressurizes the tank 2. Therefore, the pressure of the air outlet 13 is larger than the pressure of the air inlet 14. As a result, a pressure difference is generated between the air outlet 13 and the air inlet 14. This pressure difference causes the air accumulated in the upper part of the tank 2 to be sucked into the return line 12. The air sucked into the return line 12 is sent into the ejector 17 through the air outlet 13.

Therefore, in the air-dissolved water generating apparatus 1, the air accumulated in the upper part of the tank 2 is circulated again to the liquid in the tank 2 through the return line 12 and the ejector 17. That is, the air mixed into the liquid as bubbles is circulated again to the liquid in the tank, and is sent again as bubbles to the liquid 6 in the ejector 17. The air sent into the ejector 17 is again ejected into the tank together with the liquid 6. The air sent into the ejector 17 becomes bubbles and is mixed with the liquid 6. Therefore, the bubbles in the liquid 6 are more easily dissolved in the liquid 6 than in the case where the air is accumulated as air above the tank. Therefore, the gas can be dissolved in the liquid 6 with high efficiency.

Here, the gas dissolution rate is expressed by the following equation.

Cv = KL · a · (C * -C)
Cv: Dissolution rate KL: Overall mass transfer coefficient a: Contact area C *: Saturated dissolved gas concentration C: Dissolved gas concentration That is, the gas dissolution rate is calculated by the product of the contact area with the liquid and the concentration gradient of the gas. Is done. And as the contact area a increases, the dissolution rate Cv increases.

In the air-dissolved water generating apparatus 1 according to the present invention, air is sent to the liquid 6 as bubbles through the air inlet 14. Therefore, the contact area between the air and the liquid 6 is large as compared with the case where the air is accumulated above the tank. Thereby, air can be dissolved in the liquid 6 in a short time. That is, it is not necessary to lengthen the contact time of the liquid 6 with the gas in order to increase the gas dissolution efficiency. Therefore, the gas dissolution efficiency can be increased without increasing the path of the liquid 6. Therefore, the apparatus can be reduced in size. Further, the air accumulated in the upper part of the tank 2 is sent to the lower end of the tank 2 via the ejector 17. Therefore, it is difficult to disturb the water level in the tank 2. Thereby, the outflow of a big bubble can be suppressed.

Moreover, the air-dissolved water generating apparatus 1 includes a return line 12. Therefore, the gas can be continuously circulated through the return line 12 until the gas 18 accumulated in the upper part of the tank disappears. Thereby, the air dissolved water production | generation apparatus 1 can continue melt | dissolving air in a liquid over a long time inside the tank 2. FIG. Moreover, since the return line 12 circulates the gas accumulated in the upper part of the tank 2 to the lower end of the tank 2, the liquid and the gas can be stirred with high efficiency.

Further, the air inlet 14 is provided in the ejector 17, whereby the air inlet 14 is located at the bottom 3 of the tank 2. Therefore, the gas 18 moving through the liquid in the tank 2 continues to contact the fluid 6 for a long time. Therefore, the gas can be dissolved in the liquid with higher efficiency.

Further, in the air-dissolved water generating apparatus 1, the ejector 17 is positioned so that the air inlet 14 is located at a portion where the pipe diameter is rapidly increased at the joint portion 16 between the water supply passage 5 and the ejector 17 constituting the ejection passage. Is formed. Therefore, the water sent from the pump 7 passes through the water supply path 5, subsequently passes through the ejector 17, and is finally ejected into the tank 2. Here, the cross-sectional area of the flow path at the first end of the ejector 17 is set larger than the cross-sectional area of the flow path at the first end of the water supply path 5. Therefore, the flow rate of the liquid flowing through the water supply path 5 is faster than the flow rate of the liquid flowing through the ejector 17. A vortex is generated in the ejector 17 due to the difference in flow velocity and the connection of the air inlet 14 to the rapidly expanding portion. The vortex sucks air accumulated at the upper end of the tank 2 through the return line 12 and the air inlet 14 with a strong suction pressure. Therefore, with this configuration, the amount of gas 18 flowing through the ejector 17 is increased. In addition, the difference in flow velocity generates a shear force in the ejector 17. This shearing force is applied to the air sucked through the air inlet 14, whereby the shearing force divides the bubbles in the liquid sent to the ejector 17 into fine bubbles. This liquid containing fine bubbles is sent to the tank 2. That is, the contact area between the gas and the liquid in the tank is further increased. Furthermore, since the suction pressure generated by the difference in flow velocity is high, the return line 12 is not clogged with dust. That is, it is not necessary to reduce the inner diameter of the return line 12 in particular.

In the air-dissolved water generating apparatus 1, the air accumulated in the upper portion of the tank 2 is ejected as the pressure difference ΔP between the pressure P1 near the air outlet 13 and the pressure P0 near the air inlet 14 increases. The amount of inhalation increases. And the efficiency of melt | dissolution with respect to the liquid of gas becomes high, so that the contact area of a bubble and a liquid is large. Therefore, in the present embodiment, the flow path area at the first end of the ejector 17 is set larger than the flow path area at the first end of the water supply path 5. However, it is also possible to forcibly circulate the air accumulated in the upper part of the tank 2 by a pump or the like. In this case, the air inlet is formed at the bottom of the tank 2. A pump configured to send air to the air inlet via the return line 12 is provided.

Further, in the present embodiment, the liquid inlet 4 is formed at the bottom of the tank 2. However, it is also preferable to provide the liquid inlet 4 on the side wall of the tank 2 as shown in FIG. In this case, the configuration other than the position of the liquid inlet 4 in the tank 2 is the same as that of the air-dissolved water generator 1 shown in FIGS. 1 and 2. In this case, the contact distance T between the liquid 11 and the gas 18 sent to the ejector 17 is set to be shorter than the contact distance in the air-dissolved water generating apparatus 1 shown in FIGS. However, the contact distance T can be set as appropriate. In addition, this structure can make the space of the height direction of the air dissolved water production | generation apparatus 1 small. The same effect can be obtained by providing the air inlet 14 at the lower part of the tank 2.

Further, in the present embodiment, the water sent from the pump 7 is formed so as to be ejected into the tank 2 through the water supply path 5 and the ejector 17 constituting the ejection path. However, when the pressure of water flowing through the water pipe is high, it is also preferable to connect the ejection path to the water pipe without using a pump and to eject the water into the tank 2 using the water pressure of the water flowing through the water pipe. In this case, power for moving the pump becomes unnecessary.

(Embodiment 1)
FIG. 11 shows a perspective view of the air-dissolved water generating device 1 according to Embodiment 1 of the present invention. FIG. 5 shows a schematic diagram of the air-dissolved water generating apparatus 1 according to Embodiment 1 of the present invention. In addition, the same code | symbol is attached | subjected to the structure same as the basic structure of the air dissolved water production | generation apparatus 1 shown in FIG.1 and FIG.2, and description is abbreviate | omitted fundamentally. As shown in FIGS. 6 to 11, the air-dissolved water generating apparatus 1 of the present embodiment includes a tank 2, a pump 7, a return line 12, an ejector 17, a pipe 5 (not shown), and a liquid outflow. A path 8b, an air release valve 100, an air ejector 300, an air inflow path 301, and a fixing device 200 are provided.

As shown in FIG. 6, the tank 2 is composed of a tank lower part 2L and a tank upper part 2U mounted on the tank lower part 2L.

The tank lower part 2L is provided with a liquid inlet 4 and a liquid outlet 8 at the bottom thereof. The tank lower part 2L is provided with a liquid outflow path 8b on the lower surface thereof, and the liquid outflow path 8b guides the liquid flowing from the liquid outlet 8 in the lateral direction. As shown in FIG. 15, the liquid outflow path 8b is provided with a baffle plate 8c extending upward. The baffle plate 8c is disposed along the length direction of the liquid outflow path 8b. As shown in FIG. 16, the height of the baffle plate 8c is set to be equal to or less than half the inner diameter of the liquid outflow passage 8b. The tank lower portion 2L has an opening on the upper side. The tank lower portion 2L has a baffle 29 extending upward. As shown in FIGS. 6 and 7, the tank lower part 2 </ b> L has a flange 20 </ b> L formed at the upper end of the outer periphery in the lateral direction.

The tank upper part 2U has an opening below. The tank upper portion 2U is formed with a partition wall 26 extending downward on the inner upper surface thereof. An air outlet 13 is formed on the upper surface of the tank upper portion 2U. An air release valve 100 is provided on the upper surface of the tank upper portion 2U. The tank upper portion 2U is formed with a flange 20U at the lower end of the outer periphery in the lateral direction. The tank upper portion 2U is disposed above the tank lower portion 2L. Subsequently, the flange 20L is fixed to the tank lower portion 2L by being screwed to the flange 20U. Thereby, the tank 2 has a width, a length, and a height. Therefore, the tank 2 has a partition wall 26 and a baffle 29 inside thereof. The inside of the tank 2 is separated into a mixing chamber 22 and a separation chamber 23 by a partition wall 26. The separation chamber 23 is separated into a first sub-separation chamber 231 and a second sub-separation chamber 232 by a baffle 29.

The mixing chamber 22 is a space partitioned by the inner surface of the tank 2 and the partition wall 26. The mixing chamber 22 is provided for creating gas-dissolved water. The mixing chamber 22 has a liquid inlet 4 formed at the bottom. An ejector 17 is attached to the liquid inlet 4.

The partition wall 26 is provided to divide the mixing chamber 22 and the separation chamber 23. More specifically, the partition wall 26 is provided to divide the mixing chamber 22 and the first sub-separation chamber 231. The partition wall 26 is provided along the height direction of the tank 2. As shown in FIG. 6, the partition wall 26 is provided across the width of the tank 2. The lower end of the partition wall 26 is provided apart from the bottom surface of the tank 2, thereby forming a communication path 26 </ b> P that connects the mixing chamber 22 and the first separation chamber 231.

The first sub-separation chamber 231 is provided to separate the gas-dissolved water containing bubbles sent from the mixing chamber 22 via the communication path 26P into bubbles and gas-dissolved water. As shown in FIG. 5, the mixing chamber 22 is provided adjacent to the first sub-separation chamber 231, whereby the mixing chamber 22 and the first sub-separation chamber are arranged along the length direction of the tank 2. Has been placed. The first separation chamber 231 has an air outlet 13 on the upper surface thereof.

The baffle 29 is provided to separate the separation chamber 23 into a first sub-separation chamber 231 and a second sub-separation chamber 232. As shown in FIG. 5 or FIG. 6, the baffle 29 is provided along the height direction of the tank 2. Further, the baffle 29 is provided across the width of the tank 2. The baffle 29 is disposed so as to have one surface 29S facing the one surface 26S of the partition wall 26. A guide plate 29L is provided at the lower end of the baffle 29. The guide plate 29L protrudes from the one surface 29S toward the partition wall 26, and extends along the height direction of the tank 2. Yes. The baffle 29 has an extension plate 29U extending upward at the center of the upper end thereof. The baffle 29 has an upper end spaced apart from the upper surface of the tank 2, thereby forming a communication passage 29 </ b> P that connects the first separation chamber 231 and the second separation chamber 232. The baffle 29 is provided to separate the gas-dissolved water containing bubbles flowing from the first sub-separation chamber 231 into gas and gas-dissolved water.

The second sub-separation chamber 232 is provided for accumulating gas dissolved water sent from the first sub-separation chamber 231 through the communication path 29P. The second subseparation chamber 232 is provided with a liquid outlet 8 at the bottom. The cross-sectional area of the liquid outlet 8 is set to be 1/5 or less of the cross-sectional area of the second sub-separation chamber 232.

The inner wall at the upper end of the second sub-separation chamber 232 is defined by an inclined wall 26W that is continuously inclined downward from the inner wall at the upper end of the first sub-separation chamber. The second separation chamber 232 is provided with an air release valve 100 at the upper end thereof. The second separation chamber 232 is provided with a rectifying plate 232 </ b> U that extends downward from the upper surface thereof and extends along the length direction of the tank 2. The rectifying plate 232 </ b> U is formed along the length direction of the tank 2. That is, the rectifying plate 232U is formed along the direction intersecting the width direction of the baffle 29 and the extending plate 29U of the baffle 29. The first sub-separation chamber 231 is provided adjacent to the second sub-separation chamber 232, so that the mixing chamber 22, the first sub-separation chamber 231, and the second sub-separation chamber 232 are the length of the tank 2. It is arranged along the vertical direction. Further, the second sub separation chamber 232 is disposed on the side opposite to the mixing chamber 22 as viewed from the first sub separation chamber 231. The extension line of the baffle 29 along the height direction of the baffle 29 intersects the boundary between the first sub-separation chamber 231 and the second sub-separation chamber 232.

The pump 7 includes a pump inlet 71 and a pump outlet 72. As shown in FIG. 22, the pump inlet 71 is connected to the bathtub 900 via a pipe 400 that functions as a part of the circulation flow path, whereby the pump 7 is connected to the bathtub 900 via the pipe 400. Communicated with. The pump 7 is configured to eject water stored in a bathtub 900 functioning as a water supply source to the tank 2 via the liquid inlet 4. The pump outlet 72 is connected to the tank 2 via the water supply path 5 and the ejector 17, whereby the pump 7 is communicated with the mixing chamber 22 of the tank 2. The pump 7 is controlled by the controller C.

The ejector 17 has a first end 171 connected to the first end 51 of the water supply path 5 and a second end 172 connected to the liquid inlet 4. The ejector 17 and the water supply path 5 define an ejection path for sending liquid from the pump 7 to the tank 2. An air inlet 14 is formed at the first end 171 of the ejector 17.

The return line 12 has a first end connected to the air outlet 13 and a second end connected to the air inlet 14. Thus, the return line 12 communicates the upper ends of the first sub-separation chamber 231 and the second sub-separation chamber 232 with the ejector 17.

The air release valve 100 is a so-called float valve. FIG. 14 shows the air release valve 100. The air release valve 100 includes a barrel 101 and a float 102. The barrel 101 has a space inside. In the barrel 101, an opening 103 is formed at the lower end of the side surface for communicating the space inside the barrel 101 with the upper parts of the first sub-separation chamber 231 and the second sub-separation chamber 232. On the other hand, the barrel 2 has an air vent hole 104 formed on the upper surface thereof. The float 102 is disposed inside the barrel 101. The barrel 101 is provided on the upper wall of the second sub separation chamber 232 such that the lower surface of the barrel 101 is positioned below the upper surface of the second sub separation chamber 232. Accordingly, the opening 103 of the barrel 101 is positioned below a predetermined distance from the highest portion of the upper surface of the second sub-separation chamber 232. The air release valve 100 is disposed so as to be located above the rectifying plate 232U.

The air ejector 300 is attached to the pump inlet 71 of the pump 7. The air ejector 300 is provided with an air supply port 302 at one end.

The air inflow path 301 has a first end and a second end, the first end is attached to the air supply port 302 of the air ejector 300, and the second end is more than the upper wall of the tank 2. It is located above and is provided so that air around the second end of the air supply port 301 can be sucked.

The fixing device 200 is for fixing the tank 2 and the pump 7. The fixing device 200 has an opening on the upper side, and a flange 201 is formed at the edge of the opening. And the tank 2 is arrange | positioned on the fixing device 200 so that the flange 20L of the tank lower part 2L may be arrange | positioned on the flange 201. FIG. The pump 7 is attached to the fixing device 200 so that the pump 7 is located below the tank 2.

Such an air-dissolved water generating apparatus 1 operates as follows. When the pump 7 is started, the pump 7 sucks the water in the bathtub 900 from the suction port 403 through the piping 400 and the air ejector 300 that function as a part of the circulation flow path. The water flowing through the air ejector 300 generates pressure in the air ejector 300. This pressure is a force that pulls air from the air inflow path 301 into the air ejector 300. Therefore, a pressure difference is generated between the first end and the second end of the air inflow path 301. Due to this pressure difference, air is sucked into the air ejector 300 via the air inflow path 301. The air sucked into the air ejector 300 is mixed with the water flowing through the air ejector 300. Thereby, the water flowing through the air ejector 300 includes bubbles. Subsequently, the pump 7 sends out water in the pump 7 from the pump outlet 72. The water sent out from the pump 7 is jetted into the mixing chamber 22 of the tank 2 through the water supply path 5 and the ejector 7. When the pump 7 ejects water into the mixing chamber 22, the water ejected into the mixing chamber 22 collides with the wall of the mixing chamber 2, the partition wall 26, and the like. Thereby, the water ejected into the mixing chamber 22 is mixed with the air in the mixing chamber 2. Further, since the pump 7 continues to eject water into the mixing chamber 22, the water accumulates in the mixing chamber 22. The water accumulated in the mixing chamber 2 also flows into the first sub separation chamber 231 through the communication path 26P. As a result, water also accumulates in the first sub separation chamber 231. Since the pump 7 continues to spout water into the mixing chamber 2, the water accumulated in the tank 2 collides again with the water that collides with the wall of the tank 2 and the like. Further, since the pump 7 continues to spout water into the tank 2, the water in the tank 2 is agitated by the water sent from the pump 7.

The gas accumulated in the mixing chamber 22 due to such a collision is mixed with the water 11. By mixing air with water, gas mixed water containing large bubbles in water is created. Then, when water is stirred in the mixing chamber 22, shearing force is generated in the water in the mixing chamber. Shear force is applied to large bubbles mixed in water. Shear force divides large bubbles into fine bubbles. By separating the large bubbles into fine bubbles, the gas is easily dissolved in water. As a result, air dissolves in water, thereby creating gas-dissolved water. Furthermore, when the water is stirred in the mixing chamber 22, the concentration distribution of the air dissolved in the water becomes substantially uniform. As a result, the air in the mixing chamber 22 is more easily dissolved in water. The gas-dissolved water containing bubbles is sent to the first sub-separation chamber 231 through the communication path 26P.

The gas-dissolved water containing bubbles flowing from the mixing chamber 22 to the first sub-separation chamber 231 further dissolves fine bubbles. The gas-dissolved water is directed upward by the baffle 29 and the guide plate 29L. In addition, the guide plate 29 </ b> L prevents the gas-dissolved water from forming a vortex in the first sub separation chamber 231. When gas dissolved water accumulates in the first sub separation chamber 231, the water level in the first sub separation chamber 231 reaches the upper end of the baffle 29. When the water level reaches the upper end of the baffle 29, the dissolved gas flows over the upper end of the baffle 29 and flows into the second sub separation chamber 232 through the communication passage 29 </ b> P. More specifically, when the water level reaches the upper end of the baffle 29, the gas-dissolved water is branched by the extension plate 29U of the baffle 29 and flows into the second sub separation chamber 232 via the communication path 29P.

At this time, the dissolved gas flowing in the communication passage 29P is exposed to the space above the first sub-separation chamber 231 and the second sub-separation chamber 232. As a result, most of the gas-dissolved water containing bubbles is exposed to the space above the first sub-separation chamber 231 and the second sub-separation chamber 232, and the bubbles are separated. It is divided into. The separated bubbles are integrated with the gas staying in the upper part of the first sub-separation chamber 231, and air is stored in the upper parts of the first sub-separation chamber 231 and the second sub-separation chamber 232. Further, since the gas-dissolved water is branched by the extending plate 29U of the baffle 29 and flows from the first sub-separation chamber 231 to the second sub-separation chamber 232, a vortex with the gas-dissolved water is formed in the upper portion of the second sub-separation chamber 232. What you can do is prevented. As a result, the gas-dissolved water containing bubbles flowing into the second sub-separation chamber 232 is separated into gas and gas-dissolved water without being disturbed by the vortex. Moreover, since the guide plate 29L and the extension plate 29U prevent the formation of vortices, it is possible to prevent the outflow of large bubbles caused by the vortices.

The gas-dissolved water that has flowed into the second sub-separation chamber 232 is directed downward in a state where the flow is rectified by the rectifying plate 232U. In this way, the gas-dissolved water that has flowed into the second sub-separation chamber 232 flows through the liquid outlet 8 into the liquid outflow path 8b. Here, since the cross-sectional area of the liquid outlet 8 is set to be 1/5 or less of the cross-sectional area of the second sub-separation chamber 232, the dissolved gas flowing in the second sub-separation chamber 232 is the liquid outlet 8. It has a flow rate that is slower than the flow rate of the gas-dissolved water. This slow flow rate does not prevent the bubbles contained in the gas dissolved water from rising. Further, as shown in FIG. 16, the gas dissolved water that has flowed to the liquid outflow path 8b is directed in the direction of flowing along the length direction of the liquid outflow path 8b by the baffle plate 8c. Further, the baffle plate 8c prevents the gas-dissolved water from generating vortices in the liquid outflow path 8b. Therefore, even when fine bubbles are present in the gas-dissolved water, it is difficult for large bubbles to be generated due to the integration of the fine bubbles, and large bubbles are prevented from entering the gas-dissolved water taken out from the tank. can do. The dissolved gas that has flowed through the liquid outflow path 8b is sent from the liquid outlet 402 to the bathtub 900 via a pipe 401 that functions as a part of the circulation path. The dissolved gas sent to the bath 900 is exposed to atmospheric pressure. As a result, fine bubbles are generated from the air dissolved in the water of the gas dissolved water. Since these fine bubbles are fine, they remain in water. In this way, hot water containing fine bubbles is provided to a bathtub or the like. On the other hand, the air that did not dissolve in water in the tank 2 floats and is separated above the tank 2 as bubbles, and these bubbles stay with the gas that stays in the upper part of the tank.

On the other hand, the air accumulated in the upper portions of the first sub-separation chamber 231 and the second sub-separation chamber 232 is sent to the ejector 17 through the return line 12. More specifically, during the operation of the air-dissolved water generating apparatus 1, the pump 7 continues to supply water to the tank 2 through the water supply path 5, the ejector 17, and the liquid inlet 8. Water sent from the pump 7 to the mixing layer 22 through the ejector 17 generates pressure at the air inlet 14. The pressure difference between the air inlet 14 and the air outlet 13 sucks air accumulated in the upper portion of the tank 2 into the return line 12. The air sucked into the return line 12 is sent into the ejector 17 through the air inlet 14.

Thus, the air accumulated in the upper part of the first sub-separation chamber 231 and the second sub-separation chamber 232 is sent to the return line 12 and the ejector 17 defined as the ejection path. The air sent to the ejector 17 becomes bubbles and is jetted again into the mixing chamber 22 together with the water jetted from the pump 7.

On the other hand, since water continues to be ejected from the pump 7 to the mixing chamber 22, the gas-dissolved water flows to the liquid outlet 8 and also to the air release valve 100. The water that has flowed to the air release valve 100 pushes the float 102 upward. Thereby, the float 102 is located in the valve | bulb open position inside the barrel 101, as shown in FIG. When the float 102 is located at the valve open position, if air further accumulates in the upper portions of the first sub-separation chamber 231 and the second sub-separation chamber 232, the water levels of the first sub-separation chamber 231 and the second sub-separation chamber 232 are changed. descend. Subsequently, when the water levels in the first sub-separation chamber 231 and the second sub-separation chamber 232 are positioned below the opening 103 of the air release valve 100, the air in the tank moves to the air release valve 100 via the opening 103. . The air that has moved to the air release valve 100 is released to the outside of the tank 2 through the air vent hole 104. Thereby, the tank 2 stores an appropriate amount of air in the tank.

As described above, the air-dissolved water generating apparatus 1 according to the present invention returns the air accumulated in the upper portions of the first sub-separation chamber 231 and the second sub-separation chamber 232 to the ejector 17 defined as the ejection path. 12 is provided. Therefore, the air accumulated in the upper parts of the first sub-separation chamber 231 and the second sub-separation chamber 232 is mixed with the water sent from the pump 7 to the mixing chamber 22. Then, water mixed with air is jetted into the mixing chamber 22. That is, the air accumulated in the upper parts of the first sub-separation chamber 231 and the second sub-separation chamber 232 is dissolved again in the mixing chamber 22 in water. Thereby, the air dissolved water production | generation apparatus 1 comprised so that air could be dissolved in water with high efficiency can be obtained.

It is also preferable to form the air inlet 14 at the lower end of the mixing chamber 22. In this case, one end of the return line 12 is connected to the air inlet 14. Also by this, the air accumulated in the upper part of the first sub-separation chamber 231 and the second sub-separation chamber 232 can be dissolved in water again in the mixing chamber 22.

Moreover, the air-dissolved water generating device 1 of the present invention has a separation chamber 23. In the separation chamber 23, undissolved bubbles are separated from the gas-dissolved water containing bubbles, and are separated into a liquid in which the gas is dissolved and air. Therefore, it becomes difficult for bubbles with a large diameter to flow out from the liquid outlet 8. Therefore, this air dissolved water production | generation apparatus 1 is connected with the bathtub 900, the water stored in the bathtub 900 by the pump 7 is supplied to the air dissolved water production | generation apparatus 1, and the air dissolved water which flows out from the liquid outlet 8 is made into the bathtub 900. Even when a bathtub with an air-dissolved water generator is configured, it is difficult for large-diameter bubbles to enter the hot water containing fine bubbles, and the quality of the water in the bathtub is reduced. Decline can be prevented.

Further, the upper wall of the second subseparation chamber 232 of the air-dissolved water generator 1 of the present invention is defined by an inclined wall 26W that is inclined downward. The air-dissolved water generating device 1 has an air release valve 100. The air release valve 100 is provided on the inclined wall 26W. That is, the opening 103 of the air release valve 100 is positioned below the upper wall of the first sub separation chamber 231. Therefore, when a larger amount of air is accumulated in the upper part of the first sub-separation chamber 231 and the second sub-separation chamber 232, air is released through the air release valve 100. As a result, a predetermined amount of air can always be stored in the first sub-separation chamber 231. Therefore, the air accumulated in the upper part of the first sub separation chamber 231 can always be sent to the ejector 17 through the return line 12.

Furthermore, the air release valve 100 includes a barrel 101 and a float 102. The barrel 101 has an opening 103 at the lower end of the side surface. Therefore, the opening 103 opens in the lateral direction of the barrel 101. Therefore, when bubbles rise upward from the gas dissolved water flowing below the second sub separation chamber 232, the bubbles are blocked from moving upward by the lower surface of the barrel 101. The bubbles located on the lower surface of the barrel 101 move along the lower surface 101B of the barrel and move above the first sub-separation chamber 231 and the second sub-separation chamber 232. As described above, the bubbles in the second sub separation chamber 232 first move above the first sub separation chamber 231 and the second sub separation chamber 232. Thereafter, when a predetermined amount of air has accumulated in the upper portions of the first sub-separation chamber 231 and the second sub-separation chamber 232, the air flows from the air release valve 100 to the tank 2 through the opening 103 opened in the lateral direction. Released to the outside. Therefore, a predetermined amount of air can always be stored in the upper part of the first sub-separation chamber 231. Therefore, air that could not be dissolved in water can be dissolved again in the mixing chamber.

Further, the air release valve 100 is disposed on the inclined wall 26 </ b> W that defines the upper surface of the second sub separation chamber 232. Accordingly, the bubbles that have moved in the second sub-separation chamber 232 and above the second sub-separation chamber 232 move to the upper portion of the first sub-separation chamber 231 along the inclined wall 26W. Therefore, the air-dissolved water generating apparatus 1 configured to collect air at the air outlet 13 is obtained.

The air-dissolved water generating apparatus 1 according to this embodiment includes a partition wall 26 and a baffle 29. A guide plate 29L is provided at the lower end of the baffle 29. The guide plate 29L extends from the one surface 29S toward the partition wall 26 and extends along the height direction of the tank 2. . Therefore, the gas-dissolved water containing bubbles flowing through the first sub-separation chamber 231 flows along the height direction of the first sub-separation chamber 231 in a state where vortices are unlikely to be generated in the first sub-separation chamber 231. . Therefore, it is difficult for the large-diameter bubbles to flow out to the second sub-separation chamber 232 side, and the air-dissolved water flowing out from the liquid outlet 8 is less likely to be mixed with the large-diameter bubbles.

The air-dissolved water generating apparatus 1 according to this embodiment includes an air ejector 300 and an air inflow path 301. The air-dissolved water generating apparatus 1 according to the present embodiment is configured to send the air sucked through the air inflow path 301 to the water flowing through the air ejector 300. Therefore, air can be mixed in advance with the water sent from the ejection path to the mixing chamber 22. Thereby, the air dissolved water production | generation apparatus 1 comprised so that gas dissolved water could be produced with high efficiency is obtained.

Here, the volume per unit time of the air discharged from the air release valve is preferably set to 20% or more of the volume per unit time of the air contained in the water ejected from the ejection path. Furthermore, the volume per unit time of the air discharged from the air release valve is more preferably set to 80% or less of the volume per unit time of the air contained in the water ejected from the ejection path.

Here, the gas dissolution rate is expressed by the following equation as the product of the gas-liquid contact area and the gas concentration gradient as described above.

Cv = KL · a · (C ^* −C)
Cv: dissolution rate KL: general mass transfer coefficient a: contact area C ^* : saturated dissolved gas concentration C: dissolved gas concentration That is, the gas dissolution rate Cv depends on the contact area α and the saturated dissolved gas concentration C ^* . .

By the way, Boyle's law
Pressure x volume = constant. Therefore, as the pressure increases, the gas volume decreases. On the other hand, in the law of mass action (law of chemical equilibrium), (gas concentration) ÷ (concentration of gas dissolved in liquid) is constant. Therefore, as the gas concentration increases, the concentration of the gas dissolved in the liquid also increases. That is, as known as Henry's law, the saturated dissolved oxygen concentration of a gas in a liquid can be increased by increasing the partial pressure of the gas. In other words, the saturated dissolved oxygen concentration of the gas in the liquid can be increased by increasing the gas concentration and pressure.

Therefore, in the case where air is mixed with the liquid flowing in from the liquid inlet, the dissolution tank 2 is actively exhausted to promote gas replacement so that a large amount of air is dissolved in the water in the tank 2. I found out that I can.

Considering the application of the air-dissolved water generating apparatus 1 to the bathtub, oxygen in the air was dissolved in water, and the dissolved oxygen concentration in the water was examined. Table 1 shows the ratio between the amount of air sent into the tank 2 and the amount of air exhausted from the air release valve 100. That is, the ratio of the dissolved oxygen concentration in the water by adjusting the exhaust amount of the air release valve is shown. The amount of air sent into the tank 2 and the amount of air exhausted from the air release valve 100 are the ratio of the amount of air discharged from the air release valve 100 and the amount of gas sent to the air ejector 300. Can be changed by changing

As shown in FIGS. 17 and 18, when the air release valve 100 is actively exhausted for 15 minutes or more and the exhaust ratio is 20% or more, the dissolved oxygen concentration in the water becomes supersaturated. That is, it is confirmed that the oxygen partial pressure in the dissolution tank 2 is increased and more oxygen is dissolved in water.

Based on such an experiment, in the air-dissolved water generating apparatus 1, the amount of air exhausted from the air release valve 100 per unit time is within the tank 2 as water mixed with air via the water supply path 5. It is set to 20% or more of the amount of air introduced into the unit. By setting the gas exhaust amount to 20% or more of the supply air amount, the dissolved amount of oxygen having higher solubility in water than nitrogen increases, and the dissolved amount of oxygen in the liquid 5 increases. Therefore, the liquid 5 having a sufficiently high dissolved oxygen concentration can be generated.

In addition, as a specific means and method for setting the amount of gas exhausted by the air release valve 100 to 20% or more of the amount of air supplied into the dissolution tank 2, the amount of gas taken in by the gas introduction ejector 30 is increased. Can be mentioned. The same effect can be obtained by adjusting the opening shape and area of the gas vent 35 in the air release valve 100. The same effect can be obtained by appropriately selecting these features. Furthermore, the same effect can be obtained by combining these features.

(Embodiment 2)
19 and 20 show perspective views of the air-dissolved water generating device 1 according to Embodiment 2 of the present invention. In addition, the same code | symbol is attached | subjected to the structure same as Embodiment 1, and description of the same structure is abbreviate | omitted. The air-dissolved water generating apparatus 1 of the present embodiment includes a tank 2, a pump 7, a return line 12, an ejector 17, a pipe 5 (not shown), a liquid outflow path 8b, an air release valve 100, An air ejector 300 and an air inflow path 301 are provided.

The air ejector 300 is attached to the pump inlet 71 of the pump 7. The air ejector 300 is provided with an air supply port 302 at one end, and the other end is inserted inside the fixing device 200 on the back side of the upper end portion around the pump 2. And it is comprised so that the air suck | inhaled via the air inflow path 301 may be sent to the water which flows into the air ejector 300. FIG. Therefore, air can be mixed in advance with the water sent to the mixing chamber 22. Thereby, the air dissolved water production | generation apparatus 1 comprised so that gas dissolved water could be produced with high efficiency is obtained.

In addition, since the air sucked through the air inflow path 301 is sent to the water flowing through the air ejector 300, the air inflow path 301 is moved along with the movement of the air sucked into the air inflow path 301. Air also flows toward the pump 7. The airflow flowing toward the pump 7 cools the pump 7. Therefore, the heat generated by the operation of the pump 7 can be released. Accordingly, it is possible to suppress a decrease in the pump capacity.

Further, as shown in FIG. 21, the air-dissolved water generating device 1 preferably further includes a duct 105. The duct 105 includes one end connected to the air vent hole of the air release valve 100 and the other end inserted into the fixing device 200. In this case, the air discharged from the air vent hole is sent into the fixing device 200. The air sent to the inside of the fixing device 200 creates an air flow inside the fixing device 200. The pump 2 is cooled by this air flow. Therefore, also by this structure, the fall of the capability of a pump can be suppressed.

And the above-mentioned air dissolved water production | generation apparatus 1 is arrange | positioned in a bathroom. FIG. 23 shows the bathtub 900 and the air-dissolved water generating device 1 disposed in the bathroom 950. The bathtub 900 is provided adjacent to the washing area. The bathtub 900 has a cover 901 attached to the edge of the washing area. The cover 901 is formed so as to cover the surface of the bathtub 900 on the washing place side. Therefore, the cover 901 defines the boundary between the washing place and the bathtub. Cover 901 forms storage space 902 between the outer peripheral surface of the bathtub. And the air dissolution water production | generation apparatus 1 is arrange | positioned in the storage space.

And the circulation flow path in which the pump 7 and the tank 2 which comprise the air dissolution water production | generation apparatus 1 draw in the hot water in the bathtub 900 from the suction inlet 403 of one end part, and inject | pour into the bathtub 900 from the liquid blower outlet 402 of the other end. The gas-dissolved water provided from the liquid outlet of the air-dissolved water generator 1 is ejected from the liquid outlet 402 into the bathtub, and fine bubbles are supplied into the bathtub 900. Yes.

In this case, it is preferable to provide a soundproofing material 903 between the cover 901 and the air-dissolved water generating device or on the surface of the cover 901 on the bathtub 900 side. Thereby, the sound generated during the operation of the air-dissolved water generating device 1 can be prevented from leaking to the outside.

Claims (14)

A tank having a liquid inlet and a liquid outlet;
An ejection path connected to the liquid inflow port and connectable to a water supply source, and configured to eject water through the ejection path to the tank. Mixing water and air in a tank, gas dissolved water in which gas is dissolved in the water is created,
The tank includes a partition, and the partition divides the inside of the tank into a mixing chamber and a separation chamber, and the partition is spaced apart from the bottom of the tank, thereby the mixing chamber and the separation chamber. A communication path that communicates with
The liquid inlet is provided in the mixing chamber;
The liquid outlet is provided in the separation chamber;
The separation chamber receives gas-dissolved water containing bubbles from the mixing chamber via the communication path, separates the gas-dissolved water and bubbles, and the separated gas-dissolved water is externally supplied from the liquid outlet. And the separated bubbles are integrated into a gas staying at the top of the separation chamber,
An air-dissolved water generating apparatus, comprising: a return line for communicating the separation chamber and the ejection path, and for sending the gas retained in the upper part of the separation chamber to the ejection path. The separation chamber has an air outlet formed at the upper end thereof,
The air return water generating apparatus according to claim 1, wherein one end of the return line is connected to the air outlet. The mixing chamber has an air inlet formed at the lower end thereof.
The air return water generating apparatus according to claim 1, wherein one end of the return line is connected to the air inlet. The ejection path includes an ejector and a pipe,
The ejector includes a first end connected to a first end of the pipe and a second end connected to a tank, and an air inlet is formed at the first end of the ejector,
The ejector and the pipe have a flow path therein.
The cross-sectional area of the flow path at the first end of the ejector is formed larger than the cross-sectional area of the flow path at the first end of the pipe,
The air return water generating apparatus according to claim 1, wherein one end of the return line is connected to the air inlet. The air-dissolved water generating apparatus according to claim 1, wherein the separation chamber is provided with an air release valve at an upper end thereof. The water mixed with air from the ejection path is configured to be ejected to the mixing chamber,
The volume per unit time of the air discharged from the air release valve is set to 20% or more of the volume per unit time of the air contained in the water ejected from the ejection path. Item 6. An air-dissolved water generator according to Item 5. The separation chamber is divided into a first sub-separation chamber and a second sub-separation chamber by a baffle;
The baffle has an upper end spaced from the upper surface of the tank, thereby forming a communication port that communicates the first sub-separation chamber and the second sub-separation chamber, and includes bubbles sent from the mixing chamber. The gas dissolved water is formed to guide the second subseparation chamber through the first subseparation chamber,
2. The air-dissolved water generating apparatus according to claim 1, wherein the liquid outlet is formed at a lower end of the second sub-separation chamber. The tank has an upper wall that defines an inner wall at the upper end of the separation chamber,
The upper inner wall of the second sub-separation chamber is defined by an inclined wall that slopes downward continuously from the upper inner wall of the first sub-separation chamber,
8. The air-dissolved water generating apparatus according to claim 7, wherein the return line is connected to an upper wall of the tank above the first sub separation chamber. The air-dissolved water generating device further includes an air discharge valve, and the air discharge valve includes a barrel having a float inside,
The air release valve has a lower end positioned below the upper wall of the tank above the second sub-separation chamber;
The air-dissolved water generating apparatus according to claim 8, wherein the barrel has an opening formed at a lower end portion of a side surface thereof. The baffle and the partition have one surface facing each other,
8. The guide plate extending in the height direction of the tank is formed on either of the baffle or the partition wall and protrudes toward the other of the baffle or the partition wall. The air-dissolved water generating apparatus as described. The air-dissolved water generating apparatus according to claim 7, wherein the baffle has an extending plate extending toward the upper surface of the tank at the center of the upper end thereof. The separation chamber is provided with a current plate extending downward from the upper surface thereof,
12. The air-dissolved water generating device according to claim 11, wherein the rectifying plate is formed in a direction intersecting with a width direction of the extending plate. The air-dissolved water generating device according to any one of claims 1 to 12 is provided in a circulation flow path for sucking hot water in the bathtub from the suction port at one end and ejecting the hot water from the liquid outlet at the other end into the bathtub. And a gas-dissolved water provided from the liquid outlet, wherein fine bubbles are ejected from the liquid outlet into the bathtub. A bathroom comprising the air-dissolved water generating device according to any one of claims 1 to 12,
The bathroom includes a bathtub and a washing place provided adjacent to the bathtub,
A cover for covering the surface of the bathtub in the washing area, and thereby, a storage space is formed between the cover and the bathtub,
The bathtub is provided in the circulation channel in which the air-dissolved water generating device sucks hot water in the bathtub from the suction port at one end and jets it into the bathtub from the liquid outlet at the other end, and is provided from the liquid outlet With the dissolved gas water, fine bubbles are ejected from the liquid outlet into the bathtub,
The covering defines the boundary between the washroom and the bathtub;
The air-dissolved water generating device is disposed in the storage space,
A bathroom provided with an air-dissolved water generating device, wherein a soundproofing material is disposed between the air-dissolved water generating device and the cover.

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