WO2015119204A1 - Gas-liquid mixing device and gas-liquid mixing system - Google Patents

Abstract

Provided is a gas-liquid mixing device that produces a liquid having a gas mixed thereinto by mixing a gas inside a stock solution, said mixing device being provided with a stock solution inflow pipe into which the stock solution flows continuously, a gas inflow pipe into which the gas flows continuously, and a mixed liquid piping that communicates with the stock solution inflow pipe and the gas inflow pipe, wherein: the stock solution inflow pipe and the gas inflow pipe communicate such that the stock solution and the gas collide facing each other, and due to this, a gas-liquid collision portion is formed at this communication point; and the mixed liquid piping is made to communicate with the gas-liquid collision portion, and the central axis of the stock solution inflow pipe and/or the central axis of the gas inflow pipe are disposed in a direction that is different from the central axis of the mixed liquid piping.

Description

Gas-liquid mixing device and gas-liquid mixing system

The present invention relates to a gas-liquid mixing apparatus and a gas-liquid mixing system.
This application claims priority based on Japanese Patent Application No. 2014-20711 filed in Japan on February 5, 2014 and Japanese Patent Application No. 2014-134987 filed in Japan on June 30, 2014. Is hereby incorporated by reference.

Conventionally, as a gas-liquid mixing apparatus, as disclosed in, for example, Patent Document 1, a gas mixed water generating apparatus for producing gas mixed water by mixing a gas with feed water is known. In the gas mixed water production | generation apparatus of this patent document 1, it is mainly disclosed that carbonic acid gas is mixed with water to produce carbonated water.

Since carbonated water has an excellent heat retaining effect, it has long been used in bathhouses that use hot springs. It is considered that the warming action of carbonated water is basically because the body environment is improved by the peripheral vasodilatory action of the contained carbon dioxide gas. Further, the percutaneous infiltration of carbon dioxide gas increases and dilates the capillary bed, improving the blood circulation of the skin. For this reason, it is said that it is effective in the treatment of degenerative lesions and peripheral circulation disorders.

JP 2010-264364 A

By the way, in the gas mixed water production | generation apparatus of the said patent document 1, it enables manufacture of gas mixed water (especially carbonated water) with a simple structure. However, in an apparatus for producing carbonated water, miniaturization and cost reduction are desired especially for hairdressing and beauty purposes such as using carbonated water for washing hair. Therefore, in a gas-liquid mixing device that is also applied to hairdressing and beauty such as shampooing, it is possible not only to produce carbonated water with a simple structure, but also to increase the solubility of the gas in the stock solution to increase the solubility of the There is a strong demand to enable the production of water (gas mixture), thereby reducing the size and cost of the apparatus. In addition, it is also desired to improve usability by facilitating maintenance and ensuring a sufficient flow rate.

As a structure for dissolving the carbon dioxide gas, a structure using a hollow fiber membrane is known in addition to the gas mixed water generating apparatus of Patent Document 1. However, it is difficult to secure the flow rate, to reduce the size, and to reduce the price of the one using the hollow fiber membrane.
A structure using a static mixer is also known, but with this structure, the gas solubility in the stock solution cannot be increased unless the pressure is sufficiently increased. Since this is necessary, the device configuration is complicated and it is difficult to reduce the size.

The present invention has been made in view of the above circumstances, and an object of the present invention is to enable production of a gas mixture having a relatively high solubility with a simple structure, thereby enabling downsizing and cost reduction. At the same time, it is an object to provide a gas-liquid mixing apparatus that facilitates maintenance and ensures ease of use by ensuring a sufficient flow rate, and a gas-liquid mixing system using the same.

A gas-liquid mixing apparatus according to the present invention is a gas-liquid mixing apparatus for producing a gas mixed liquid by mixing a gas into a raw liquid, and the raw liquid inflow pipe into which the raw liquid continuously flows and the gas continuously A gas inflow pipe that flows into the gas, and a liquid mixture pipe that communicates with the stock solution inflow pipe and the gas inflow pipe, respectively, and the stock solution inflow pipe and the gas inflow pipe face each other and the stock solution and the gas collide with each other. In this communication location, a gas-liquid collision part is formed, and the mixed liquid pipe is communicated with the gas-liquid collision part, and the central axis of the stock solution inflow pipe and the gas inflow pipe At least one of the central axes is arranged in a direction different from the central axis of the mixed solution pipe.

In this gas-liquid mixing apparatus, the stock solution inflow pipe and the gas inflow pipe are communicated so that the stock solution and the gas face each other and collide with each other, thereby forming a gas-liquid collision part at this communication location, Further, the mixed liquid pipe is communicated with the gas-liquid collision portion, and at least one of the central axis of the raw liquid inlet pipe and the central axis of the gas inlet pipe is arranged in a direction different from the central axis of the mixed liquid pipe. Therefore, the stock solution flowing in from the stock solution inflow tube and the gas flowing in from the gas inflow tube collide with each other, and at least one of the central axis of the stock solution inflow tube and the central axis of the gas inflow tube is not biased to one side. Therefore, the gas mixture can be guided in different directions, so that the collision energy can be maximized with a simple structure and the solubility of the gas in the stock solution can be increased.

In the gas-liquid mixing apparatus, the angle formed by the central axis of the stock solution inflow pipe and the central axis of the gas inflow pipe is preferably 20 ° to 180 °, more preferably 95 ° to 180 °. preferable. Here, "the angle formed by the central axis of the stock solution inflow pipe and the central axis of the gas inflow tube" is the result of connecting the stock solution inflow tube and the gas inflow tube on a plane, It means the angle formed between the two central axes.
According to this configuration, a gas mixture having a relatively high gas solubility can be manufactured with a simple structure.

In the gas-liquid mixing apparatus, it is preferable that the stock solution is water and the gas is carbon dioxide gas.
According to this configuration, carbonated water having a relatively high solubility of carbon dioxide (carbon dioxide) can be produced with a simple structure.

In the gas-liquid mixing apparatus, it is preferable that a first vortex generating mechanism for generating a vortex in the gas mixture is provided in the mixture liquid pipe.
According to this configuration, the stock solution and the gas collide at the connection portion (the gas-liquid collision portion) of the stock solution inflow pipe and the gas inflow tube, the gas is mixed with the stock solution, and most of the gas is dissolved, By causing the vortex to flow, the bubbles in the gas mixture can be refined and the specific surface area can be increased to promote dissolution in the stock solution.

Further, in the gas-liquid mixing apparatus, the first vortex generating mechanism is configured to face an end portion of the gas-liquid collision portion of an annular or cylindrical vortex generating portion provided in the liquid mixture pipe and the end portion. It is preferable that a groove portion formed to open to the gas-liquid collision portion side is provided between the inner wall surface of the mixed liquid pipe.
According to this configuration, since the first eddy current generating mechanism includes the groove formed to open to the gas-liquid collision part side, the gas mixed liquid collides with the bottom surface of the groove and reverses the flow so that a minute amount is obtained. Eddy currents are formed, whereby the bubbles in the gas mixture are refined.

Further, in the gas-liquid mixing apparatus, the first vortex generating mechanism includes an upstream first vortex generating mechanism disposed on the upstream side of the mixed liquid piping, and a downstream side of the upstream first vortex generating mechanism. It is preferable that a downstream first vortex generating mechanism is provided.
According to this configuration, dissolution in the stock solution can be further promoted by further miniaturizing the bubbles in the gas mixture and increasing the specific surface area, rather than providing one first vortex generating mechanism.

In addition, a guide port that guides the gas mixture to the inner wall surface side of the downstream first vortex generating mechanism is provided in an internal hole of the vortex generating portion that constitutes the upstream first vortex generating mechanism. Preferably it is.
According to this configuration, since the guide port is provided in the internal hole of the vortex generating portion that constitutes the upstream first vortex generating mechanism, the gas mixture that has passed through the guide port is included in the downstream first vortex generating mechanism. By being guided to the wall surface side, more collisions are made with the bottom surface of the groove portion of the downstream first vortex generating mechanism, and the flow is reversed to form a vortex, whereby the bubbles in the gas mixture are refined.

Further, in the gas-liquid mixing apparatus, the mixture liquid pipe is configured to generate a vortex in the gas mixture liquid by narrowing a flow path of the gas mixture liquid flowing through the mixture liquid pipe from upstream to downstream. It is preferable that a two-eddy current generating mechanism is provided.
According to this configuration, the stock solution and the gas collide at the connection portion (the gas-liquid collision portion) of the stock solution inflow pipe and the gas inflow tube, and the gas mixture solution in which the gas is mixed and dissolved in the stock solution, By causing the vortex to flow, the bubbles in the gas mixture can be refined and the specific surface area can be increased to promote dissolution in the stock solution. Moreover, since the flow path of the gas mixed liquid flowing through the mixed liquid piping is narrowed from the upstream toward the downstream, the gas solubility in the gas mixed liquid can be increased by pressurizing the gas mixed liquid.

Further, in the gas-liquid mixing apparatus, the second vortex generating mechanism includes a narrow portion that narrows a flow path of the gas mixed liquid flowing through the mixed liquid pipe from upstream to downstream, and a flow path to a side of the narrow portion. It is preferable to have a flow path changing unit that reverses the flow of the gas mixed liquid by changing the flow rate and generates a vortex flow.
According to this configuration, the gas mixture is pressurized by flowing through the narrow portion, and the solubility of the gas in the gas mixture is increased. Further, the flow of the gas mixture is reversed by the flow path changing unit, and the vortex is generated, whereby the bubbles in the gas mixture are refined and the dissolution in the stock solution is promoted.

Further, in the gas-liquid mixing apparatus, the stock solution inflow pipe has a pressure switch for detecting that the pressure of the stock solution flowing through the flow path is not less than a predetermined pressure without narrowing the flow path of the stock solution inflow pipe. The gas inflow pipe is provided with a control valve provided between the gas inflow pipe and the gas supply source to control the supply of gas from the gas supply source to the gas inflow pipe, and the pressure The switch is preferably configured to open the control valve when it is detected that the pressure of the stock solution has become equal to or higher than a predetermined pressure.
According to this configuration, the stock solution inflow pipe is provided with a pressure switch that detects the pressure of the stock solution flowing through the flow path without narrowing the flow path. It can be prevented that the flow rate is reduced and a gas mixture having a desired flow rate cannot be obtained.

Moreover, in the said gas-liquid mixing apparatus, it is preferable that the said control valve is comprised by the latch type solenoid valve.
According to this configuration, the power consumption of the gas-liquid mixing device having the control valve can be reduced because the latch type solenoid valve has much less power consumption than a general solenoid valve.

In the gas-liquid mixing device, the latch solenoid valve is preferably operated by a battery, and more preferably by a dry battery or a rechargeable battery.
By using a dry battery or a rechargeable battery instead of a commercial power source as a power source, the usability of the gas-liquid mixing device can be improved, and for example, it can be easily used in a bathroom.

Further, in the gas-liquid mixing apparatus, the control valve is constituted by a proportional solenoid valve, and the proportional solenoid valve has an adjustment unit that adjusts a gas supply amount from the gas supply source to the gas inflow pipe. It is preferable to be provided.
According to this configuration, since the proportional solenoid valve is used as the control valve, the amount of gas supplied from the gas supply source to the gas inflow pipe is adjusted by switching the opening of the proportional solenoid valve by the adjusting unit. Can do. Therefore, the concentration of the gas-liquid mixture obtained can be adjusted to a plurality of different concentrations by adjusting the gas flow rate with respect to the raw water flowing from the raw solution inflow pipe.

The gas-liquid mixing system according to the present invention includes the gas-liquid mixing device, a raw liquid supply source that supplies the raw liquid to the raw liquid inflow pipe, a gas supply source that supplies gas to the gas inflow pipe, and the raw liquid supply source. A control unit that controls supply of the stock solution from the gas supply source to the stock solution inflow tube and gas supply from the gas supply source to the gas inflow tube.
In this gas-liquid mixing system, by providing the gas-liquid mixing device, the solubility of the gas in the stock solution can be increased with a simple structure. Therefore, it is possible to reduce the size and price, facilitate maintenance, and improve usability by securing a sufficient flow rate.

According to the gas-liquid mixing apparatus of the present invention, since the collision energy between the stock solution and the gas is maximized with a simple structure and the solubility of the gas in the stock solution is increased, a gas mixture with a relatively high solubility with a simple structure. Therefore, it is possible to reduce the size and the price, to facilitate the maintenance, and to ensure a sufficient flow rate to improve usability.

It is a mimetic diagram showing a schematic structure of a 1st embodiment of a gas-liquid mixing system concerning the present invention. It is an external appearance perspective view which shows schematic structure of a gas-liquid mixing apparatus. It is a sectional side view which shows schematic structure of a gas-liquid mixing apparatus. It is a perspective view which shows a vortex generating member. It is a top view which shows a vortex generating member. It is a sectional side view which shows a vortex generating member. It is a perspective view which shows the modification of a guide port. It is a perspective view which shows the other modification of a guide port. It is a perspective view which shows a mixing pipe. It is a top view which shows a mixing pipe. It is a sectional side view which shows a mixing pipe. It is a perspective view for demonstrating a 1st pressure switch. It is a sectional side view for demonstrating a 1st pressure switch. It is a sectional side view for demonstrating manufacture of the gas liquid mixture by a gas-liquid mixing apparatus. It is a perspective view which shows the modification of a mixing pipe. It is a top view which shows the modification of a mixing pipe. It is a sectional side view which shows the modification of a mixing pipe. It is a figure which shows schematic structure of 2nd Embodiment of the gas-liquid mixing system which concerns on this invention, Comprising: It is a front view which shows an external appearance. It is a figure which shows schematic structure of 2nd Embodiment of the gas-liquid mixing system which concerns on this invention, Comprising: It is a front view which shows an internal structure. It is a figure which shows schematic structure of 2nd Embodiment of the gas-liquid mixing system which concerns on this invention, Comprising: It is a rear view which shows an external appearance. 10 is a perspective view showing an internal structure of the gas-liquid mixing system shown in FIGS. 9A to 9C. FIG. It is a schematic diagram which shows schematic structure of 3rd Embodiment of the gas-liquid mixing system which concerns on this invention. It is a front view which shows the external appearance of 3rd Embodiment of the gas-liquid mixing system which concerns on this invention. It is a front view which shows schematic structure of the communicating part of a raw | natural liquid inflow pipe, a gas inflow pipe, and mixed liquid piping.

Hereinafter, a gas-liquid mixing apparatus and a gas-liquid mixing system according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic diagram showing a schematic configuration of a first embodiment of a gas-liquid mixing system according to the present invention. In FIG. 1, reference numeral 1 is a gas-liquid mixing system, and 2 is a gas-liquid mixing device.

In this embodiment, the gas-liquid mixing system 1 is for mixing and dissolving carbon dioxide (carbon dioxide) in raw water, for example, tap water, and providing the obtained carbonated water for various purposes. As for the use of carbonated water, it is used for hairdressing and beauty purposes such as shampooing, and hot water for baths, that is, carbonated springs, as in the past. FIG. 1 shows a schematic configuration of a gas-liquid mixing system 1 disposed in each hair wash table in a barber / beauty shop having a plurality of hair wash stands.

The gas-liquid mixing system 1 includes a gas-liquid mixing device 2, a raw water supply source (raw solution supply source) 3 for supplying raw water (raw solution) to the gas-liquid mixing device 2, and carbon dioxide gas (CO ₂ : A gas supply source 4 for supplying gas), a control unit 40 for controlling supply of raw water from the raw water supply source 3 and supply of carbon dioxide gas from the gas supply source 4 and the like.

The gas-liquid mixing device 2 is the first embodiment of the gas-liquid mixing device according to the present invention. FIG. 2A is an external perspective view of the gas-liquid mixing device 2 and a side sectional view of the gas-liquid mixing device 2. As shown in FIG. 2B, a raw water inflow pipe (raw liquid inflow pipe) 5 connected to the raw water supply source 3 via a pipe (raw water side pipe 30), and a pipe (gas side pipe 31) to the gas supply source 4. And a gas inflow pipe 6 connected to each other.

In this embodiment, the raw water inflow pipe 5 and the gas inflow pipe 6 are formed by one pipe, and the raw water supply source 3 is connected to the opening 5a on the raw water inflow pipe 5 side through the raw water side pipe. The gas supply source 4 is connected to the opening 6a on the gas inflow pipe 6 side through a gas side pipe. Therefore, as shown in FIG. 2B, the raw water inflow pipe 5 and the gas inflow pipe 6 communicate with each other so that the raw liquid and the gas face each other and collide with each other, and the central axis (not shown) of the raw water inflow pipe 5 and the gas inflow At least one of the central axes (not shown) of the pipe 6 is arranged in a direction different from the central axis (not shown) of the mixed liquid pipe 8.
The shapes and dimensions of the raw water inflow pipe 5 and the gas inflow pipe 6 are not particularly limited as long as the effects of the present invention as described above are not impaired, but are preferably cylindrical.
The angle formed between any one of the central axis of the raw water inlet pipe 5 and the central axis of the gas inlet pipe 6 and the central axis of the mixed liquid pipe 8 is preferably 10 ° to 90 °. More preferably, the angle is from 90 ° to 90 °. This angle is formed between the two central axes when one of the raw water inflow pipe 5 and the gas inflow pipe 6 and the mixed liquid pipe 8 are arranged on a plane. Means the angle. For example, in the case of an angle formed between the central axis of the raw water inflow pipe 5 and the central axis of the mixed liquid pipe 8, the angle shown in FIG. By setting this angle within the above range, a gas mixture having a relatively high gas solubility can be produced with a simple structure. In the embodiment shown in FIGS. 2A and 2B, the mixed liquid pipe is so arranged that the central axis of the mixed liquid pipe 8 is orthogonal to the central axis of one pipe formed by the raw water inflow pipe 5 and the gas inflow pipe 6. 8 is arranged.
The gas inflow pipe 6 is provided with an orifice plate 6b having a small hole on the opening 6a side, so that the carbon dioxide gas supplied from the gas supply source 4 can be supplied into the gas inflow pipe 6 at a predetermined pressure. To be supplied. About the magnitude | size and number of this small hole, it can select suitably according to desired gas pressure.

Further, a mixed liquid pipe 8 is provided in the gas-liquid collision portion 7 of the raw water inflow pipe 5 and the gas inflow pipe 6 so as to communicate with the raw water inflow pipe 5 and the gas inflow pipe 6, respectively. A pipe main body 9 that is disposed in a direction different from the central axis of the mixed liquid pipe 8 among at least one of the central axis of the raw water inflow pipe 5 and the central axis of the gas inflow pipe 6, and is integrally connected to the gas-liquid collision unit 7; The housing 10 is detachably connected to the pipe body 9.
In the present embodiment, the housing 10 is detachably connected to the pipe body 9, but the pipe body 9 and the housing 10 may be integrally formed.
Further, in the present embodiment, as shown in FIG. 13, if the angle between the central axis of the raw solution inflow pipe and the central axis of the gas inflow pipe is θ ′, θ ′ is 20 ° to 180 °. It is preferably 95 ° to 180 °, more preferably 135 ° to 180 °. By comprising in this way, the gas liquid mixture whose gas solubility is comparatively high can be manufactured with a simple structure.
In the apparatus of the present invention, the central axes of the raw water inflow pipe 5, the gas inflow pipe 6 and the mixed liquid pipe 8 are configured so that they can be arranged on the same plane. It may be configured to form.

The pipe body 9 is a cylindrical body integrally connected to the gas-liquid collision part 7 between the raw water inflow pipe 5 and the gas inflow pipe 6. Therefore, the members forming the raw water inflow pipe 5, the gas inflow pipe 6, and the pipe main body 9 are integrally molded products made of resin or metal in this embodiment. The integrally molded product may be formed in a T-shape when viewed from the surface. Here, the pipe body 9 is formed so as to surround a cylindrical guide tube 11 formed in communication with the gas-liquid collision portion 7, and therefore has an inner diameter sufficiently larger than the inner diameter of the guide tube 11. is doing.

The housing 10 is made of a resin or metal formed in a substantially cylindrical shape, that is, in a pipe shape. One end side is a substantially cylindrical insertion portion 12 that is inserted into the pipe body 9, and the other end side is a pipe body 9. The main body 13 is a substantially cylindrical housing body 13 pulled out from the housing. An annular flange portion 14 is formed between the insertion portion 12 and the housing body 13. The flange portion 14 is configured to contact an annular flange 9 a provided at an end portion of the pipe body 9 when the insertion portion 12 is inserted into the pipe body 9.

Then, with the flange portion 14 of the housing 10 in contact with the flange 9a of the pipe body 9 as described above, the joint clip 15 is attached to the flange portion 14 and the flange 9a as shown in FIGS. 2A and 2B. The flange portion 14 and the flange 9a are held and fixed in contact with each other.

The joint clip 15 is a metal leaf spring formed in a substantially ring shape, and has an elongated opening 15a that engages with the flange portion 14 and the flange 9a along the circumferential direction thereof. The joint clip 15 is expanded between one end side and the other end side, and the flange portion 14 and the flange 9a are inserted into the joint clip 15. Thereafter, the end portion is closed between the other end side and the flange portion is opened in the opening 15a. 14, the flange portion 14 and the flange 9 a can be held and fixed by the joint clip 15 by engaging and projecting the flange 9 a.

Further, as shown in FIG. 2B, two O- rings 16, 16 are wound around the outer peripheral surface of the insertion portion 12 of the housing 10. These O- rings 16, 16 are provided so as to partially protrude in grooves (not shown) formed around the outer peripheral surface of the insertion portion 12. Under such a configuration, when the insertion portion 12 is inserted into the pipe main body 9, the O- rings 16 and 16 are interposed between the inner wall surface of the pipe main body 9 and the pipe main body 9. 9 is hermetically connected.

A cylindrical vortex generating member (vortex generating portion) 17 is accommodated in the internal hole of such an insertion portion 12. That is, a stepped portion 12a is formed in the inner hole of the insertion portion 12 substantially at the boundary with the housing body 13 side, and the vortex generating member 17 is placed on the stepped portion 12a. As shown in FIGS. 3A to 3C, the vortex generating member 17 includes a cylindrical portion 18 and a drift plate 19 integrally formed in the cylindrical portion 18. 3A is a perspective view of the vortex generating member 17, FIG. 3B is a plan view of the vortex generating member 17, and FIG. 3C is a side sectional view of the vortex generating member 17.

The vortex generating member 17 has an upper end portion of the cylindrical portion 18, that is, an end portion on the gas-liquid collision portion 7 side, and a rear side of the central axis of the mixed liquid pipe 8 (housing 10) (gas-liquid collision portion 7 side). A taper surface 18a from the inside toward the outside as it goes from the front to the front side (the side opposite to the gas-liquid collision portion 7) is formed over the entire circumference of the upper end portion. As a result, the taper surface 18a and the surface facing the taper surface 18a, that is, the inner wall surface of the mixed liquid pipe 8 (insertion portion 12 of the housing 10) facing the upper end portion of the vortex generating member 17 shown in FIG. 2B. A groove 20 is formed between them.

The groove portion 20 is formed to open toward the gas-liquid collision portion 7 over the entire circumference of the upper end portion of the vortex generating member 17, and is a part of the first vortex generating mechanism in the present invention, that is, the upstream side 1 eddy current generating mechanism is configured. As described later, a part of the gas mixture flowing from the gas-liquid collision part 7 through the guide tube 11 and into the insertion part 12 by the groove part 20 is the bottom surface of the groove part 20, that is, the tapered surface. It collides with 18a and reverses its flow to form a minute vortex.

As shown in FIGS. 3A and 3B, the drift plate 19 of the vortex generating member 17 is formed with a guide port 19a on the outer peripheral portion thereof, that is, on the cylindrical portion 18 side. In the present embodiment, as shown in FIG. 3B, the guide port 19 a is formed in an arc shape along the inner peripheral surface of the cylindrical portion 18, and such a guide port 19 a is formed along the circumferential direction of the cylindrical portion 18. Four are formed at intervals. Since the guide port 19a is formed on the cylindrical portion 18 side in this way, the gas mixed solution that has passed through the guide port 19a is, as will be described later, the mixed solution pipe 8 that constitutes the downstream first vortex generating mechanism. It is guided to the inner wall surface side.

Here, the total opening area of the four guide ports 19a is formed to be substantially the same as the opening area of the inner hole of the guide tube 11. Therefore, the raw water and the carbon dioxide gas collide at the gas-liquid collision part 7 and the gas mixture liquid formed by mixing is substantially the same when passing through the guide tube 11 and when passing through the four guide ports 19a. It passes through at a flow rate. As a result, when passing through the four guide ports 19a, the flow rate is not reduced by being particularly pressurized, but flows at the same flow rate as when passing through the guide tube 11.

In addition, about the guide port 19a, the shape and magnitude | size are not limited to the form shown to FIG. 3A and FIG. 3B, if it is arrange | positioned at the outer peripheral part of the drift plate 19, ie, the cylindrical part 18 side, it will be various. The form of can be adopted. For example, a relatively small circular guide port 19b as shown in FIG. 4A and a plurality of smaller circular guide ports 19c as shown in FIG. 4B may be arranged. However, the guide port 19b shown in FIG. 4A and the guide port 19c shown in FIG. 4B are formed so that the total opening area thereof is substantially the same as the inner diameter of the guide tube 11 as with the guide port 19a. Is preferred. 4A and 4B show only the drift plate 19, but these drift plates 19 are provided in the cylindrical portion 18 shown in FIGS. 3A to 3C to constitute the vortex generating member 17. .

As shown in FIG. 2B, the housing body 13 is formed by a large-diameter portion 21 on the side of the insertion portion 12 and a small-diameter portion 22 having a smaller diameter than the large-diameter portion 21. In the large-diameter portion 21, an internal hole 21 a that communicates with the internal hole formed on the stepped portion 12 a side and therefore communicates with the guide port 19 a of the vortex generating member 17 is formed. On the other hand, an internal hole 22 a communicating with the internal hole 21 a of the large diameter portion 21 is formed in the small diameter portion 22.

The inner hole 21a of the large diameter portion 21 is formed in a tapered shape that gradually becomes smaller in diameter toward the small diameter portion 22 side. In particular, the lower end side, that is, the side communicating with the inner hole 22a of the small diameter portion 22 is a tapered surface 21b having a large inclination angle (taper angle) formed by the inner wall surface. That is, the tapered surface 21b is formed to be inclined with respect to the central axis (not shown) so as to go from the outside to the inside as it goes to the small diameter portion 22 side.

A mixing pipe 23 is detachably inserted and fixed in the internal hole 22a of the small diameter portion 22. The mixing pipe 23 is a substantially cylindrical one made of resin or metal, and constitutes the vortex generating portion in the present invention, and its upper end protrudes toward the inner hole 21a side of the large diameter portion 21 and is fixed. Has been. That is, the mixing pipe 23 is disposed so that the upper end thereof substantially coincides with the upper end of the tapered surface 21b.

With such a configuration, a groove portion 24 is formed between the upper end portion of the mixing pipe 23 and the inner wall surface (housing main body 13 of the housing 10) of the mixed liquid pipe 8 facing the upper end portion, that is, the tapered surface 21b. Yes. The groove portion 24 is formed to open to the gas-liquid collision portion 7 side, that is, the vortex generating member 17 side constituting the upstream first vortex generating mechanism over the entire circumference of the upper end portion of the mixing pipe 23, The downstream 1st eddy current generation mechanism used as a part of the 1st eddy current generation mechanism in this invention is comprised.

As described later, a large amount of the gas mixture flowing into the housing body 13 through the guide port 19a of the vortex generating member 17 collides with the bottom surface of the groove portion 24, that is, the tapered surface 21b. The flow is reversed and a minute vortex is formed. That is, since the gas mixture that has passed through the guide port 19a of the vortex generating member 17 is guided to the inner wall surface side of the internal hole 21a of the large diameter portion 21 by these guide ports 19a, most of it flows toward the groove portion 24. It is like that.
In the present embodiment, the first vortex flow is generated by such a downstream first vortex generating mechanism having the mixing pipe 23 as a vortex generating portion and the upstream first vortex generating mechanism having the vortex generating member 17 as a vortex generating portion. A generation mechanism is configured.

The upper end of the mixing pipe 23 constitutes a downstream first vortex generating mechanism, but in the present embodiment, a second vortex generating mechanism is formed inside thereof separately from this. That is, the mixing pipe 23 has a narrow portion 25 and a flow path changing portion 26 inside as shown in FIGS. 5A to 5C. 5A is a perspective view of the mixing pipe 23, FIG. 5B is a plan view of the mixing pipe 23, and FIG. 5C is a side sectional view of the mixing pipe 23. FIG.

As shown in FIGS. 5B and 5C, the narrow portion 25 is provided with a first baffle plate 27 a extending from a part of the inner wall surface of the mixing pipe 23 toward the center side. This is an opening formed between the tip of the baffle plate 27 a and the inner wall surface of the mixing pipe 23. As described above, since the inner hole of the mixing pipe 23 is partially closed by the first baffle plate 27a, the remaining opening portion inevitably narrows the opening area, so that the flow path of the gas mixture can be made upstream. It becomes the site | part narrowed toward the downstream, ie, the narrow part 25. FIG.

Further, as shown in FIG. 5C, on the lower side (downstream side) of the narrow portion 25, a second baffle plate 27b extends from another part of the inner wall surface of the mixing pipe 23 toward the center side. Is provided. Since the second baffle plate 27b is arranged directly under the narrow portion 25 in this way, the gas mixture flowing through the narrow portion 25 collides with the second baffle plate 27b, and then the second baffle plate 27b. It flows through an opening 27 c formed between the tip of the mixing pipe 23 and the inner wall surface of the mixing pipe 23. Accordingly, the second baffle plate 27b and the opening 27c formed on the tip side of the second baffle plate 27b constitute a flow path changing portion 26 that changes the flow path to the side of the narrow portion 25.

The flow path changing unit 26 having such a configuration reverses the flow of the gas mixture liquid pressurized by the narrowed part 25 from the upstream side to the downstream side by the second baffle plate 27b. Then, it is guided to the opening 27c on the side of the second baffle plate 27b. At that time, as shown by an arrow in FIG. 5C, the gas mixture is pressurized in the narrow portion 25, so that the solubility of carbon dioxide gas is increased. Further, in the flow path changing unit 26, the flow of the gas mixture is reversed by the second baffle plate 27b, and the gas mixture is caused to flow in a direction crossing the central axis of the mixture pipe 8 (mixing pipe 23). A vortex is generated.

The mixing pipe 23 is formed with two notches 28a and 28b on the side wall as shown in FIGS. 5A and 5C. These notches 28a and 28b are mainly used for forming the first baffle plate 27a and the second baffle plate 27b.
Moreover, the annular fitting convex part fitted to the fitting recessed part (not shown) formed in the lower end part of the small diameter part 22 of the housing main body 13 as shown in FIG. 2B at the lower end part of the mixing pipe 23 29 is formed. The fitting pipe 29 is detachably fitted into the fitting recess at the lower end of the small-diameter portion 22, so that the mixing pipe 23 is detachably accommodated in the housing body 13.

The mixing pipe 23 accommodated and fixed in the housing body 13 in this way has an opening on the lower end side serving as a gas mixture jet outlet of the gas-liquid mixing device 2. Therefore, although not shown, the hose and the shower head are attached to the small diameter portion 22 of the housing body 13. Therefore, the small diameter portion 22 has a male screw portion (not shown) formed on the outer peripheral surface thereof, and a hose is detachably attached thereto.

As shown in FIGS. 6A and 6B, the gas-liquid mixing device 2 having such a configuration has a raw water side pipe 30 connected to the opening 5 a of the raw water inflow pipe 5 and a gas side to the opening 6 a of the gas inflow pipe 6. The piping 31 is connected. A joint clip 15 is used to connect the raw water side pipe 30 and the gas side pipe 31. The raw water side pipe 30 is connected to the raw water supply source 3 shown in FIG. 1, and the gas side pipe 31 is connected to the gas supply source 4.

Here, in this embodiment, the raw water supply source 3 is a water pipe, and therefore, the raw water side pipe 30 is disposed between the water pipe and the raw water inflow pipe 5. However, the water pipe or the raw water inflow pipe 5 may be provided with a heating device (not shown) for heating the tap water to a predetermined temperature, for example, a preset temperature of about 30 ° C. to 45 ° C. . When shampooing, it is felt cold with normal tap water, so it is desirable to keep the temperature within the above temperature range, preferably about 35 ° C. to 40 ° C.

In addition to heating in this manner, for example, a predetermined amount of sodium chloride may be dissolved in tap water as raw water in advance to obtain physiological saline for medical purposes. Furthermore, you may add the fragrance | flavor as needed. As the raw water supply source 3, various water sources can be used in addition to the water pipe.
On the other hand, as the gas supply source 4, in this embodiment, a gas cylinder filled with carbon dioxide gas at a pressure (gauge pressure) of about 0.5 MPa is used.

As shown in FIGS. 6A and 6B, the raw water side pipe 30 is provided with a first pressure switch 32 serving as a pressure switch of the present invention. As shown in FIG. 6A, the first pressure switch 32 reduces the pressure of the raw water flowing in the raw water side pipe 30 (in the raw water inflow pipe 5) without narrowing the flow path of the raw water side pipe 30, that is, the raw water inflow pipe 5. This is a sensor to detect, and has a known configuration in which a switch is turned on when a predetermined pressure higher than a preset pressure is detected and the switch is turned off when the pressure is lower than a predetermined pressure.

The first pressure switch 32 includes a bypass pipe 32a communicating with the raw water side pipe 30. When the pressure in the raw water side pipe 30 reaches a predetermined pressure or higher, the raw water passes through the bypass pipe 32a and the first pressure switch 32 is connected to the first pressure switch 32. The pressure switch 32 of No. 1 is pressurized and turned on. Further, when the inside of the raw water side pipe 30 is less than a predetermined pressure, the raw water does not pressurize the first pressure switch 32, and therefore the switch is turned off.

Therefore, the first pressure switch 32 detects the pressure of the raw water flowing through the flow path without narrowing the flow path of the raw water side pipe 30, that is, the raw water inflow pipe 5 connected thereto. In a flow sensor generally used, an impeller or the like is arranged in the flow path, and the flow rate is detected from the number of rotations thereof. As a result, the flow path is narrowed by the impeller or the like. On the other hand, since the first pressure switch 32 does not narrow the flow path, it can flow without restricting the flow rate.

As shown in FIG. 1, the first pressure switch 32 is electrically connected to the control unit 40, and transmits a detected on / off signal to the control unit 40.
The gas side pipe 31 connected to the gas side supply pipe 6 of the gas-liquid mixing apparatus 2 shown in FIGS. 6A and 6B includes an electromagnetic valve 33 in the path between the gas supply source 4 as shown in FIG. (Control valve) and a second pressure switch 34 are provided.

The second pressure switch 34 is disposed on the gas supply source 4 side, detects the pressure of the carbon dioxide gas flowing through the gas side pipe 31, and is equal to or higher than a preset pressure (for example, 0.3 MPa [gauge pressure]). If so, the switch is turned on, and if it is less than a preset pressure, the switch is turned off. Therefore, the second pressure switch 34 functions as a fuel gauge for determining the residual pressure in the gas cylinder constituting the gas supply source 4, that is, the remaining amount of carbon dioxide in the gas cylinder.

The second pressure switch 34 is also electrically connected to the control unit 40, and transmits an on / off signal based on the detection result to the control unit 40. In the control unit 40, whether or not the detection result of the second pressure switch 34, that is, the remaining amount of the gas supply source 4 (gas cylinder) is equal to or higher than a preset pressure (amount) is displayed on the display unit of the operation panel (not shown). Is displayed.

The electromagnetic valve 33 is disposed on the downstream side of the second pressure switch 34 and adjusts the supply of carbon dioxide from the gas supply source 4 by opening and closing thereof. That is, when the electromagnetic valve 33 is opened, carbon dioxide is supplied from the gas supply source 4 to the gas inflow pipe 6 of the gas-liquid mixing device 2, and when closed, the supply of carbon dioxide is stopped. The opening and closing of the electromagnetic valve 33 is controlled by being electrically connected to the control unit 40.

The control unit 40 receives the on / off signal from the first pressure switch 32 and controls the opening / closing of the electromagnetic valve 33 based on the on / off signal. That is, the first pressure switch 32 detects that the pressure in the raw water side pipe 30 (raw water inflow pipe 5) is equal to or higher than a predetermined pressure, and therefore the raw water is flowing at a predetermined flow rate or higher, and controls the ON signal. When transmitting to the unit 40, the control unit 40 transmits an ON signal to the electromagnetic valve 33 in order to open the electromagnetic valve 33. Then, the electromagnetic valve 33 is opened, and carbon dioxide gas is supplied to the gas-liquid mixing device 2.

On the other hand, when the pressure in the raw water side pipe 30 (raw water inflow pipe 5 control unit 40) is less than a predetermined pressure, and therefore the first pressure switch 32 cannot detect that the raw water is flowing at a predetermined flow rate or higher. In this case, the ON signal is not transmitted to the control unit 40, and thus the control unit 40 closes the electromagnetic valve 33 without opening it. Then, since the electromagnetic valve 33 is closed, the carbon dioxide gas is not supplied to the gas-liquid mixing device 2.

In this way, carbon dioxide gas is supplied to the gas-liquid mixing device 2 only when the raw water flows at a predetermined flow rate or higher and is supplied to the gas-liquid mixing device 2, so that the carbon dioxide gas is excessive. Consumption is prevented, and the gas mixture to be produced, that is, the carbon dioxide concentration in the carbonated water is adjusted to an appropriate range set in advance.

The control unit 40 includes a CPU, a memory device, and the like, and has an operation panel that also functions as a display unit. The entire gas-liquid mixing system 1 is turned on and off, and various data are output via the operation panel. Can be done. That is, the control unit 40, based on the signals from the first pressure switch 32 and the second pressure switch 34 described above, supply time (supply amount) of raw water, supply time (supply amount) of carbon dioxide gas, The remaining amount of carbon dioxide gas from the gas supply source 4 is calculated.

The various information calculated in this way can be output to an external terminal such as an iOS terminal or an Android via the output unit 35 in the control unit 40. As the output part 35, what is output by communication means (for example, Bluetooth (trademark) etc.) which is not illustrated is provided. As the external terminal, a tablet, a smartphone, or the like is preferably used, and various information calculated by the control unit 40 can be easily received.

In a hairdressing and beauty shop having a plurality of hair basins as in the present embodiment, when the gas-liquid mixing system 1 is disposed in each basin, various information is output from the gas-liquid mixing system 1 of each basin. Various information can be input to one external terminal. Therefore, the person in charge of the hairdressing and beauty shop can easily check the operating status of each hair basin, the past driving history, and the like by looking at the external terminal to which various information has been input.

Next, the production of carbonated water to be a gas mixture by the gas-liquid mixing system 1 (gas-liquid mixing device 2) having such a configuration will be described.
First, water (hot water) is supplied from tap water as the raw water supply source 3 at a predetermined pressure set in advance, for example, 0.10 to 0.20 MPa, preferably 0.10 to 0.15 MPa (gauge pressure). Flow in side pipe 30. By supplying the raw water at such a predetermined pressure, in this embodiment, the flow rate is set to be, for example, about 6 to 15 l / min, preferably about 6 to 10 l / min.

When the raw water is flowed in this way and the inside of the raw water side pipe 30 reaches a predetermined pressure, the first pressure switch 32 detects this and opens the electromagnetic valve 33 via the control unit 40.
On the gas supply source 4 side, the second pressure switch 34 detects the remaining pressure (remaining amount) in the gas supply source (gas cylinder) 4 and displays the result on the operation panel of the control unit 40. Therefore, if the residual pressure of the gas supply source 4 is equal to or higher than a preset pressure, the operator proceeds with the production of carbonated water as it is. Moreover, when the residual pressure of the gas supply source 4 is less than a preset pressure, the gas supply source 4 is exchanged as necessary. The gas supply source (gas cylinder) 4 is provided with a pressure regulator and a pressure gauge. For example, the replacement timing of the gas supply source 4 can be determined by checking the pressure gauge.

Carbon dioxide gas that has passed through the solenoid valve 33 is adjusted to have a flow rate of, for example, about 4 to 12 l / min, preferably about 5 to 11 l / min, by a flow rate regulator (not shown) provided on the upstream side or downstream side of the solenoid valve 33. Adjusted to
When raw water is supplied from the raw water supply source 3 to the raw water inflow pipe 5 via the raw water side pipe 30, and carbon dioxide is supplied from the gas supply source 4 to the gas inflow pipe 6 via the gas side pipe 31, FIG. The raw water and carbon dioxide gas (gas) collide at the gas-liquid collision part 7 and are mixed as indicated by arrows in FIG. Then, it flows into the mixed liquid pipe 8 through the guide pipe 11.

At that time, the raw water and the carbon dioxide gas collide with each other in the gas-liquid collision unit 7, and the gas mixture obtained in a direction different from at least one of the raw water and the carbon dioxide gas without being biased to one side is guided, The collision energy is maximized, the carbon dioxide is sufficiently mixed with the raw water, and the solubility of the carbon dioxide in the raw water is increased. The saturated concentration of carbon dioxide with respect to water at a temperature of 40 ° C. is about 1000 ppm. On the other hand, in the gas-liquid mixing device 2 of the present embodiment, after colliding with the gas-liquid collision unit 7, the gas-liquid mixing unit 2 passes through the guide tube 11 by flowing into the mixed solution pipe 8 through the guide tube 11. The concentration of carbon dioxide in the gas mixture (carbonated water) could be adjusted to about 800 to 850 ppm. In addition, the carbon dioxide gas which is not melt | dissolved in raw | natural water exists as a state which became a bubble and was mixed in the gas liquid mixture.

The gas mixed solution (carbonated water) that has flowed into the mixed solution pipe 8 flows toward the vortex generating member 17 provided in the insertion portion 12 of the housing 10. At that time, a part of the gas mixture liquid flows toward the groove portion 20 (upstream first vortex generating mechanism) provided between the upper end portion of the vortex generating member 17 and the inner wall surface of the insertion portion 12. As shown by the arrows in FIG. 7, a minute vortex is generated. That is, the gas mixed solution collides with the bottom surface (tapered surface 18 a) of the groove portion 20, reverses the flow thereof, and flows in a direction intersecting with the central axis of the mixed solution pipe 8, thereby generating a minute vortex.

By generating such a minute vortex, the bubbles in the gas mixture are refined and the specific surface area is increased. Thereby, the contact area of the carbon dioxide gas which forms a bubble, and gas mixed liquid (raw water) increases, and melt | dissolution of the carbon dioxide gas with respect to gaseous mixed liquid (raw water) is accelerated | stimulated. Therefore, the gas mixture already having a concentration of about 800 to 850 ppm has its carbon dioxide concentration increased to about 900 ppm.

The gas mixture whose carbon dioxide concentration is increased by the upstream first vortex generating mechanism (groove portion 20) passes through the guide port 19a of the drift plate 19 of the vortex generating member 17, as indicated by an arrow in FIG. And flows on the inner wall surface side of the inner hole 21 a of the large-diameter portion 21 of the housing body 13. As a result, most of the gas mixture is a groove portion 24 (downstream first vortex generating mechanism) provided between the inner wall surface of the inner hole 21 a of the large diameter portion 21, that is, the tapered surface 21 b, and the upper end portion of the mixing pipe 23. ) And a minute vortex is generated as shown by an arrow in FIG. That is, the gas mixed liquid collides with the bottom surface (tapered surface 21 b) of the groove portion 24, reverses the flow thereof, and flows in a direction intersecting with the central axis of the mixed liquid piping 8, thereby generating a minute vortex.

By generating such a small vortex, the dissolution of carbon dioxide in the gas mixture (raw water) is promoted in the same manner as in the groove 20 (upstream first vortex generation mechanism). The gas concentration is further increased.
The gas mixture whose carbon dioxide concentration is increased by the downstream first vortex generating mechanism (groove portion 24) flows into the mixing pipe 23 as shown by an arrow in FIG.

Then, the gas mixture that has flowed into the mixing pipe 23 is pressurized by flowing through the narrow portion 25 as shown in FIG. 5C, thereby increasing the solubility of the carbon dioxide gas in the gas mixture. Further, the flow is reversed by the second baffle plate 27 b and flows in a direction crossing the central axis of the mixed liquid pipe 8, thereby generating a vortex. Furthermore, a vortex | eddy_current is produced also when a flow path is changed toward the opening 27c after that. Thereby, bubbles in the gas mixture are refined, and dissolution of carbon dioxide in the gas mixture (raw water) is promoted. In the present embodiment, the gas mixture is increased to a carbon dioxide concentration of about 1000 ppm, which is a saturated concentration.

The gas-liquid mixed solution (carbonated water) in which carbon dioxide gas is dissolved to a saturation concentration in this way is supplied to a hose connected to the small diameter portion 22 of the housing body 13 and a shower head provided at the tip of the hose. It is made to erupt through and is used for hair washing.

As described above, the gas-liquid mixing device 2 of the present embodiment causes the raw water supplied by the raw water inflow pipe 5 and the carbon dioxide gas (gas) supplied by the gas inflow pipe 4 to collide with each other, and the mixed liquid Since the gas mixture is guided in a direction different from at least one of the raw water and carbon dioxide without being biased to one side by the pipe 8, the collision energy is maximized with a simple structure and the solubility of carbon dioxide in the raw water is increased. Can do. Accordingly, a driving source such as a pump is not required, and carbonated water having a relatively high solubility can be produced with a simple structure. This makes it possible to reduce the size and cost of the gas-liquid mixing device. . In addition, there is no clogging as in the case of using a conventional hollow fiber membrane, so maintenance is facilitated, and furthermore, a gas mixture (carbonated water) is hardly pressurized so that a sufficient flow rate can be secured. it can. Therefore, usability can be improved significantly compared to the prior art.

Moreover, since the 1st vortex | eddy_current generation | occurrence | production mechanism which makes a gas mixture liquid flow to the direction which cross | intersects the center axis | shaft of the liquid mixture pipe | tube 8 in the liquid mixture piping 8 is provided, a vortex flow is produced in a gas liquid mixture. Thus, by dissolving the bubbles in the gas mixture and increasing the specific surface area, dissolution of carbon dioxide in the raw water can be promoted.

In addition, the first eddy current generating mechanism includes grooves 20 and 24 formed between the upper end portion of the vortex generating portion including the vortex generating member 17 and the mixing pipe 23 and the inner wall surface of the mixed liquid pipe 8 facing the upper end portion. Therefore, by causing the gas mixture to collide with the bottom surfaces of the groove portions 20 and 24 and reversing the flow, a fine vortex can be formed and the bubbles in the gas mixture can be miniaturized. Therefore, the dissolution of carbon dioxide in the raw water (gas mixture) can be promoted.

Moreover, since the guide port 19a is provided in the drift plate 19 formed in the internal hole of the vortex generating member 17 that constitutes the upstream first vortex generating mechanism, the gas mixture liquid that has passed through the guide port 19a is supplied to the large-diameter portion 21. By guiding toward the inner wall surface side of the inner hole 21a, it is possible to cause more collision with the bottom surface of the groove portion 24 of the downstream first vortex generating mechanism and to reverse the flow to form a vortex. Therefore, the bubbles in the gas mixture can be made finer and the dissolution of carbon dioxide in the raw water (gas mixture) can be promoted.

In addition, a mixing pipe 23 is provided in the mixed liquid pipe 8, and a second vortex generating mechanism is provided in the mixing pipe 23 so that the flow path of the gas mixed liquid is narrowed from upstream to downstream to generate a vortex. Therefore, it is possible to promote dissolution of the carbon dioxide gas in the raw water by generating eddy currents in the gas mixture to refine the bubbles in the gas mixture and increasing the specific surface area. Moreover, since the flow path of the gas mixture is narrowed from upstream to downstream, the solubility of the gas in the gas mixture can be increased by pressurizing the gas mixture.

Further, the second eddy current generating mechanism is configured by changing the flow path to the narrow portion 25 that narrows the flow path of the gas mixture flowing through the mixed liquid pipe 8 from upstream to downstream, and to the side of the narrow portion 25 to change the gas flow. Since it is constituted by the flow path changing unit 26 that reverses the flow of the mixed solution and generates a vortex, the gas mixed solution is pressurized by the narrowed portion 25 and the solubility of the carbon dioxide gas in the gas mixed solution is increased. Can do. Moreover, since the flow of the gas mixture is reversed by the flow path changing unit 26 to generate a vortex, the bubbles in the gas mixture can be refined to promote the dissolution of carbon dioxide in the raw water.

Further, a first pressure switch that is connected to the raw water inflow pipe 5 and therefore detects the pressure of the raw water flowing in the raw water side pipe 30 substantially included in the raw water inflow pipe 5 without narrowing the flow path. Since 32 is provided, it is possible to prevent a gas mixture liquid having a desired flow rate from being obtained by being pressurized by narrowing the flow path of the raw water and reducing the flow rate. Further, since the first pressure switch 32 is configured to open the electromagnetic valve 33 (control valve) when it is detected that the pressure of the raw water has become a predetermined pressure or more, the carbon dioxide gas is excessively consumed. This can be prevented, and the carbon dioxide concentration in the carbonated water to be produced can be adjusted to an appropriate range set in advance.

Further, even in the gas-liquid mixing system 1 having such a gas-liquid mixing device 2, by providing the gas-liquid mixing device 2, the solubility of the carbon dioxide gas with respect to the raw water can be increased with a simple structure, and thus the small size. Can be reduced in price and price, and maintenance is facilitated, and sufficient flow rate is ensured to improve usability.

In the first embodiment, the upstream first vortex generating mechanism (groove portion 20) and the downstream first vortex generating mechanism (groove portion 20) are used as the vortex generating mechanism for generating the vortex in the flow path of the mixed liquid pipe 8. Although the three mechanisms of the groove portion 24) and the second eddy current generating mechanism (the narrow portion 25 and the flow path changing portion 26) are provided, the order of these may be changed, and one of these three mechanisms, two mechanisms Alternatively, at least four mechanisms may be provided, at least two of the same mechanisms may be provided, and furthermore, a configuration in which these eddy current generating mechanisms are not provided may be employed. Also in this case, carbon dioxide gas can be dissolved at a high concentration in the gas mixture (raw water) by colliding the raw water (raw solution) and the carbon dioxide gas (gas) in the gas-liquid collision unit 7.

Further, as a configuration in which a part of the eddy current generating mechanism is eliminated, specifically, an example in which the second eddy current generating mechanism (the narrow portion 25 and the flow path changing unit 26) is eliminated can be given. 8A to 8C show a pipe 36 used in place of the mixing pipe 23 shown in FIGS. 5A to 5C. Like the mixing pipe 23, the internal hole of the small-diameter portion 22 of the housing main body 13 shown in FIG. It is comprised so that it may be accommodated and fixed in 22a.

The pipe 36 has a narrow portion 25 and a flow path changing portion 26 formed in the mixing pipe 23, that is, the first baffle plate 27a, the second baffle plate 27b, and the cutouts 28a and 28b are not formed. It is formed in the same shape as the mixing pipe 23, and is formed in a simple cylindrical shape except that it has a fitting convex portion 29.

Therefore, by replacing and fixing such a pipe 36 in the internal hole 22a of the small-diameter portion 22 of the housing body 13 instead of the mixing pipe 23, the downstream first vortex generating mechanism can be formed at the upper end portion thereof. Further, the second eddy current generating mechanism can be omitted.
Thus, by omitting the second eddy current generating mechanism having the narrow portion 25 that narrows the flow path of the gas mixture from upstream to downstream, the carbon dioxide gas (gas) of the obtained carbonated water (gas mixture) is omitted. Although the solubility is lowered, it is possible to prevent the flow rate from being reduced by eliminating the pressurization of the gas mixture by the narrow portion 25, and thus the flow rate of the carbonated water (gas mixture) obtained can be increased.

Next, a second embodiment of the gas-liquid mixing apparatus and gas-liquid mixing system according to the present invention will be described. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
9A to 9C are diagrams showing a schematic configuration of a second embodiment of the gas-liquid mixing system according to the present invention, FIG. 9A is a front view showing an appearance, FIG. 9B is a front view showing an internal structure, and FIG. FIG. 3 is a rear view showing an appearance. FIG. 10 is a perspective view showing the internal structure of the gas-liquid mixing system shown in FIGS. 9A to 9C. 9A to 9C, reference numeral 50 denotes a gas-liquid mixing system, and this gas-liquid mixing system 50 is provided in the casing 51 with the gas-liquid mixing apparatus 2 according to the present invention shown in the above-described embodiment, and the accompanying device. Various components to be stored are compactly accommodated.

The housing 51 has, for example, a substantially square front plate and a back plate each having a side of about 100 mm to 200 mm and a thickness of about 50 mm to 100 mm. As shown in FIG. In addition, the gas-liquid mixing device 2 shown in FIGS. 2A and 2B and the control unit 40 shown in FIG. 1 are provided. Moreover, the gas-liquid mixing apparatus 2 is the same as the gas-liquid mixing apparatus 2 of 1st Embodiment shown to FIG.1, FIG.6A, FIG.6B, and the raw | natural water side piping 30, the gas side piping 31 (refer FIG. 10), 1st 1 pressure switch 32, second pressure switch 34, and control valve 52.

As shown in FIG. 1, the raw water side pipe 30 is connected to a raw water supply source (raw liquid supply source) 3 for supplying raw water (raw liquid) to the gas-liquid mixing device 2 via a connecting pipe or the like (not shown). As in the first embodiment, the first pressure switch 32 is provided. As shown in FIG. 9B, the raw water side pipe 30 has a male screw-like connection portion 30 a that is connected to a connection pipe or the like, and is disposed so as to protrude outward from the side plate of the casing 51. Therefore, the raw water side pipe 30 can be easily connected to the raw water supply source 3 via a connection pipe or the like.

The gas side pipe 31 is formed so as to be connected to the gas supply source 4 for supplying carbon dioxide gas to the gas-liquid mixing device 2 as shown in FIG. As shown in FIG. 10, a second pressure switch 34 and a control valve 52 are provided, and a speed controller 53 is further provided. As for this gas side piping 31, the connection part 31a connected to the gas supply source 4 side is made to protrude outward from the backplate of the housing | casing 51, as shown to FIG. 9C. Therefore, the gas side pipe 31 can be easily connected to the gas supply source 4 via a connection pipe or the like.

The speed controller 53 is a flow rate adjusting valve that adjusts the flow rate of carbon dioxide gas flowing from the gas supply source 4 into the gas side pipe 31 as shown in FIG. 10, and is adjusted to have a preset flow rate.

In the present embodiment, the control valve 52 is constituted by a latch type electromagnetic valve. For example, in an NC (normally closed) type solenoid valve, it is necessary to continue supplying electric power in order to maintain an open state (open state), whereas in a latch type solenoid valve, a closed state and an open state are maintained. Therefore, by using a permanent magnet, it is not necessary to supply power to maintain the state. That is, energization is necessary only at the time of switching, and energization is not necessary when maintaining the state after switching. As a result, the latch type solenoid valve consumes much less power than a general solenoid valve such as the NC type.

Therefore, the control valve 52 composed of such a latch-type electromagnetic valve can be operated with a DC power source, and can be operated with, for example, a dry battery or a rechargeable battery (rechargeable battery) because of low power consumption. Become. Therefore, in the present embodiment, a dry battery or a rechargeable battery is used as a power source (not shown) of the latch type electromagnetic valve (control valve 52). The power source composed of the dry battery or the rechargeable battery, that is, the dry battery or the rechargeable battery is directly arranged in the casing 51 or a power supply box (not shown) for housing the dry battery or the rechargeable battery is connected to the casing 51. Is done. In addition, this power source is also used as a power source for the first pressure sensor 32, the second pressure sensor 34, and the control unit 40 in the present embodiment. Therefore, the gas-liquid mixing device 52 of the present embodiment can be used alone without being connected to a commercial power source provided in a home or store via a wiring cord.

In this embodiment, a small gas cartridge, for example, a commercially available carbon dioxide gas cartridge containing 74 g is suitably used as the gas supply source 4. The carbon dioxide cartridge can be transported by general distribution and has excellent handling properties. Since such a carbon dioxide cartridge is sufficiently lightweight, it can be directly connected to the connection part 31a of the gas side pipe 31 shown in FIG. 9C or indirectly through a coupler or the like.

Therefore, the gas-liquid mixing system 50 according to the present embodiment is particularly suitable for a home bathroom. In general, there is no commercial power supply in a bathroom at home, and there is no direct placement of carbon dioxide gas cylinders. For example, when a large gas-liquid mixing system is used in a bathroom, a wiring cord for connecting to the power supply And piping from the carbon dioxide cylinder must be routed from outside the bathroom. However, such wiring cords and piping routing require refurbishment of the bathroom, etc., and there are concerns about electric leakage and carbon dioxide leakage due to disconnection of the piping.

On the other hand, in the gas-liquid mixing system 50 shown in FIGS. 9A to 9C and FIG. 10, since the latch type electromagnetic valve is used as the control valve 52, the power consumption is small, and therefore a dry battery or a rechargeable battery is used as the power source. A wiring cord for connecting to a commercial power supply is not necessary. In addition, since a small carbon dioxide cartridge can be used, piping is not required.

Therefore, in the gas-liquid mixing system 50 of the present embodiment, there is no need to refurbish the bathroom, and there is no worry of leakage of electricity or leakage of carbon dioxide gas due to disconnection of piping. Easy to use in the bathroom. For example, with respect to a hot water supply hose having a shower head attached to the tip, the shower head is made detachable via an attachment. And a shower head is removed from this hot water supply hose, and the connection part 30a of the raw | natural water side piping 30 of the gas-liquid mixing system 50 is connected here via a coupler. Further, a carbon dioxide cartridge is connected to the connection part 31 a of the gas side pipe 31.

And a shower head is attached to the small diameter part 22 of the gas-liquid mixing apparatus 2 of the gas-liquid mixing system 50 with a hose. Thereby, by supplying hot water to the gas-liquid mixing system 50 and supplying carbon dioxide gas in the same manner as in the first embodiment, carbonated water (gas-liquid mixed liquid) can be ejected from the shower head. Therefore, carbonated water can be used for hair washing. In addition, by attaching a hose instead of the shower head and directing it to the bathtub, the carbonated spring can be put into the bathtub.

It should be noted that such control of carbonated water supply can be directly performed by an operation panel 54 provided on the front plate of the casing 51 as shown in FIG. 9A. The operation panel 54 is controlled by the control unit 40 shown in FIG. 1 and includes a “WATER” display, a “GAS” display, and a display 55 for ON / OFF. In order to operate the gas-liquid mixing system 50, the operator first presses the display 55 for ON / OFF.

Then, the gas-liquid mixing system 50 is operated, and raw water is supplied from the raw water supply source 3. When the first pressure switch 32 detects that the raw water is flowing at a predetermined flow rate or higher, the operation panel 54 receives a signal from the control unit 40 and lights “WATER”. Further, the first pressure switch 32 detects that the raw water is flowing at a predetermined flow rate or more, and the second pressure switch 34 detects and presses the display 55 for ON / OFF. When turned ON, the control unit 40 opens the control valve 52. Thereby, carbon dioxide gas is supplied to the gas-liquid mixing device 2, and therefore, carbonated water is ejected from the small diameter portion 22 of the gas-liquid mixing device 2. At that time, the second pressure switch 34 detects the residual pressure (remaining amount) in the gas supply source (gas cylinder) 4 and if the pressure is higher than a preset pressure, the control unit 40 displays the result on the operation panel. Let That is, the display of “GAS” is turned on.

Therefore, the operator can confirm that carbonated water is ejected from the small-diameter portion 22 of the gas-liquid mixing apparatus 2 by confirming both “WATER” and “GAS”.
Moreover, the operation of the gas-liquid mixing apparatus 2 can be stopped by pressing the display 55 for ON / OFF again after use.

In the gas-liquid mixing apparatus 2 in the gas-liquid mixing system 50 of the present embodiment, since the latching solenoid valve is used as the control valve 52, the latching solenoid valve consumes much more power than a general solenoid valve. Therefore, the power consumption of the gas-liquid mixing device 2 having the control valve 52 and the gas-liquid mixing system 50 can be reduced. Therefore, a dry battery or a rechargeable battery (rechargeable battery) can be used as a power source instead of a commercial power source.

Further, by using a dry battery or a rechargeable battery as a power source for the control valve 52 (latch type solenoid valve) in this way, the wiring cord from the gas-liquid mixing device 2 or the gas-liquid mixing system 50 to the commercial power source can be eliminated, Therefore, the troublesomeness caused by the wiring cord can be eliminated. In addition, it can be easily used in a bathroom at home. In particular, by using, for example, a commercially available carbon dioxide cartridge containing 74 g as the gas supply source 4, it is possible to make it easier to use in a household bathroom.

Next, a third embodiment of the gas-liquid mixing apparatus and gas-liquid mixing system according to the present invention will be described.
The third embodiment differs from the second embodiment in that a proportional solenoid valve is used in place of the latch solenoid valve as the control valve 52 shown in FIGS. 9B and 10. The proportional solenoid valve is configured so that the opening degree of the flow path is not simply “open / closed” in two stages like a general solenoid valve, and the “open” state can be switched to a plurality of states. ing. Unlike proportional solenoid valves, proportional solenoid valves need to be energized to maintain their state, and are therefore basically connected to a commercial power source with a wiring cord.

In the present embodiment, the open state of the proportional solenoid valve as the control valve 52 is switched in two stages, for example, full open and half open. Such switching of the opening degree is performed by the control unit 40 electrically connected to the control valve 52 as shown in FIG. 11 which is a schematic diagram showing a schematic configuration of the gas-liquid mixing system. That is, the control unit 40 is also electrically connected to the proportional solenoid valve (control valve 52) of the present embodiment, and the control unit 40 is turned on / off of the proportional solenoid valve (control valve 52) and opened. An adjustment unit 55 for switching the degree is provided.

The adjusting unit 55 adjusts the supply amount of carbon dioxide gas (gas) from the gas supply source 4 to the gas inflow pipe 6 by switching the opening degree of the proportional solenoid valve (control valve 52). Note that the maximum supply amount of carbon dioxide gas (gas) to the gas inflow pipe 6 is defined by the speed controller 53 shown in FIG. 10, and therefore the adjusting unit 55 has the maximum supply amount and a supply amount smaller than this maximum supply amount. It is designed to switch in two steps. The adjusting unit 55 is also configured to perform control to turn off the proportional solenoid valve. Therefore, the adjustment unit 55 adjusts the proportional solenoid valve on / off, and adjusts the flow rate of the carbon dioxide gas in two stages with respect to the raw water supplied from the raw water inflow pipe 5. Thereby, in the gas-liquid mixing apparatus 2 of this embodiment, either carbonated water with a high concentration of carbon dioxide or carbonated water with a low concentration can be selected and supplied.

In the present embodiment, as shown in FIG. 12, in addition to the “WATER”, “GAS”, and ON / OFF display 55 shown in FIG. Display of “H” for selecting a low density and “L” for selecting a low density are added, and a pressing portion of a triangle 57 and an inverted triangle 58 is arranged next to each. By pressing one of the triangle 57 or the inverted triangle 58, the control unit 40 connected to the operation panel 56 is a proportional solenoid valve (control valve 52) so as to correspond to the concentration of the adjustment unit 55 pressed. ) And adjust the flow rate of carbon dioxide. Further, “H” or “L” next to the pressing portion is lit to display that the set density selected by the operator is reached.

In the gas-liquid mixing device 2 in the gas-liquid mixing system of the present embodiment, a proportional solenoid valve is used as the control valve 52. Therefore, by adjusting the opening of the proportional solenoid valve by the adjusting unit 55, the gas supply is performed. The amount of gas supplied from the source 4 to the gas inlet pipe 6 can be adjusted. Therefore, by adjusting the flow rate of the carbon dioxide gas with respect to the raw water supplied from the raw water inflow pipe 5, for example, the carbon dioxide concentration of the obtained carbonated water can be adjusted to a plurality of different concentrations. Further, since the carbon dioxide concentration can be adjusted by using a proportional solenoid valve as the control valve 52, the carbon dioxide concentration can be easily adjusted without complicating the apparatus. As a result, the gas-liquid mixing device 2 and the gas-liquid mixing system using the same can be miniaturized.

In the third embodiment, the opening of the proportional solenoid valve (control valve 52) is switched in two stages by the adjusting unit 55, but it may be configured so that it can be switched in three or more stages. Although the flow rate of carbon dioxide gas is basically changed regardless of the amount of raw water supplied from the raw water supply source 3, the amount of carbon dioxide gas is changed according to the amount of raw water supplied from the raw water supply source 3. You may comprise so that a flow volume may be changed.

Specifically, the adjustment unit 55 is configured to be able to input a plurality of different carbon dioxide concentrations set in advance via the operation panel 56. Further, the first pressure switch 32 shown in FIG. 11 detects the flow rate of the raw water supplied from the raw water supply source 3 and transmits the detected value to the control unit 40. In the control part 40, the flow rate of the carbon dioxide gas for making the carbon dioxide gas concentration input in the adjustment part 55 into the detected flow rate of the raw water is calculated. Then, based on this calculated value, the opening degree of the proportional solenoid valve (control valve 52) is obtained, and the obtained opening degree is sent to the adjusting unit 55.

The adjusting unit 55 controls the proportional solenoid valve (control valve 52) to adjust the opening degree in order to adjust the opening degree that has been sent. Thereby, by using a proportional solenoid valve as the control valve 52, the carbon dioxide gas concentration of the carbonated water obtained regardless of the amount of raw water supplied from the raw water supply source 3, that is, even if the amount of raw water is an arbitrary amount. Can be adjusted to a desired concentration.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above-described embodiment, the gas-liquid mixing device 2 and the gas-liquid mixing system 1 of the present invention have been described as examples applied to a shower provided on a hair washing table or a shower in a household bathroom for the purpose of hairdressing and beauty. Of course, the present invention may be applied to medical devices in various medical facilities. In addition, the present invention can be applied to a household bath or a business bath and can be used in an apparatus (system) for producing a carbonated spring. Furthermore, the present invention can be applied to various apparatuses (systems) that require carbonated water.

In the above embodiment, the case where the gas-liquid mixing apparatus of the present invention is applied to an apparatus (system) for producing carbonated water by mixing water and carbon dioxide gas has been described. However, the present invention is not limited to this. The present invention can also be applied to a case where a gas other than carbon dioxide gas is mixed and dissolved in water, or a case where carbon dioxide gas or other gas is mixed and dissolved in a liquid other than water.

Furthermore, in this invention, the method of mixing gas in a stock solution and manufacturing a gas liquid mixture is provided. That is, the method of the present invention comprises:
A method for producing a gas mixture by mixing a gas in a stock solution,
Providing the gas-liquid mixing device,
The stock solution is continuously supplied to the stock solution inflow pipe, and at the same time, the gas is continuously supplied to the gas inflow pipe, thereby mixing the stock solution and the gas by facing each other and mixing them,
It is a method including flowing the obtained mixture of undiluted solution and gas into the mixed solution pipe.
The gas-liquid mixing device, the raw solution and gas, the procedure and conditions for supplying the raw solution and gas to the device, etc. used in the method of the present invention are as described above for the gas-liquid mixing device. The method of the present invention can also be carried out using the gas-liquid mixing system of the present invention described above.

1 Gas-liquid mixing system 2 Gas-liquid mixing device 3 Raw water supply source (raw liquid supply source)
4 Gas supply source 5 Raw water inflow pipe (raw liquid inflow pipe)
6 Gas inflow pipe 7 Gas-liquid collision part 8 Mixed liquid pipe 9 Piping body 10 Housing 11 Guide pipe 12 Insertion part 13 Housing body 17 Vortex generating member (vortex generating part)
18 Cylindrical portion 18a Tapered surface 19 Diffusion plate 19a Guide port 20 Groove portion 21 Large diameter portion 21a Internal hole 21b Tapered surface 22 Small diameter portion 22a Internal hole 23 Mixing pipe 24 Groove portion 25 Narrow portion 26 Flow path changing portion 27a First baffle plate 27b Second baffle plate 27c Opening 32 First pressure switch 33 Solenoid valve (control valve)
36 Pipe 50 Gas-liquid mixing system 52 Control valve 54 Operation panel 55 Adjustment unit

Claims (15)

1. A gas-liquid mixing device for producing a gas mixture by mixing gas in a stock solution,
   A stock solution inflow pipe through which the stock solution continuously flows, a gas inflow pipe through which the gas continuously flows, a mixture liquid pipe respectively connected to the stock solution inflow pipe and the gas inflow pipe,
   The undiluted solution inflow pipe and the gas inflow tube communicate with each other so that the undiluted solution and the gas collide face each other, thereby forming a gas-liquid collision portion at this communicating location,
   The mixed liquid pipe communicates with the gas-liquid collision portion, and at least one of the central axis of the raw liquid inlet pipe and the central axis of the gas inlet pipe is arranged in a direction different from the central axis of the mixed liquid pipe. Gas-liquid mixing device.
2. 2. The gas-liquid mixing device according to claim 1, wherein an angle formed by a central axis of the stock solution inflow pipe and a central axis of the gas inflow pipe is 20 ° to 180 °.
3. The gas-liquid mixing apparatus according to claim 1 or 2, wherein the stock solution is water and the gas is carbon dioxide gas.
4. The gas-liquid mixing device according to any one of claims 1 to 3, wherein a first eddy current generating mechanism for generating a vortex in the gas liquid mixture is provided in the liquid mixture pipe.
5. The first vortex generating mechanism includes an end portion on the gas-liquid collision portion side of an annular or cylindrical vortex generating portion provided in the mixed solution pipe, and an inner wall surface of the mixed solution pipe facing the end portion. The gas-liquid mixing apparatus of Claim 4 provided with the groove part opened and formed in the said gas-liquid collision part side between.
6. The first vortex generating mechanism includes an upstream first vortex generating mechanism disposed on the upstream side of the mixed solution pipe, and a downstream first vortex flow disposed on the downstream side of the upstream first vortex generating mechanism. The gas-liquid mixing apparatus of Claim 5 provided with the production | generation mechanism.
7. A guide port that guides the gas mixture to the inner wall surface side of the downstream first vortex generating mechanism is provided in an internal hole of the vortex generating portion constituting the upstream first vortex generating mechanism. Item 7. The gas-liquid mixing device according to Item 6.
8. The mixed liquid pipe is provided with a second eddy current generating mechanism for generating a vortex in the gas mixed liquid by narrowing a flow path of the gas mixed liquid flowing through the mixed liquid pipe from upstream to downstream. The gas-liquid mixing device according to any one of claims 1 to 7.
9. The second eddy current generating mechanism includes a narrow portion that narrows a flow path of the gas mixture flowing through the mixed solution pipe from upstream to downstream, and a change of the flow path to the side of the narrow portion, thereby changing the gas mixture The gas-liquid mixing device according to claim 8, further comprising: a flow path changing unit that reverses the flow of the liquid and generates a vortex.
10. The stock solution inflow pipe is provided with a pressure switch for detecting that the pressure of the stock solution flowing through the flow path is equal to or higher than a predetermined pressure,
    The gas inflow pipe is provided with a control valve that is provided between the gas inflow pipe and the gas supply source and controls supply of gas from the gas supply source to the gas inflow pipe,
    The gas-liquid mixing device according to any one of claims 1 to 9, wherein the pressure switch is configured to open the control valve when detecting that the pressure of the stock solution has become equal to or higher than a predetermined pressure.
11. The gas-liquid mixing device according to claim 10, wherein the control valve is constituted by a latch type electromagnetic valve.
12. The gas-liquid mixing device according to claim 11, wherein the latch type solenoid valve is operated by a battery.
13. 11. The gas according to claim 10, wherein the control valve is constituted by a proportional solenoid valve, and the proportional solenoid valve is provided with an adjustment unit that adjusts a gas supply amount from the gas supply source to the gas inflow pipe. Liquid mixing device.
14. A gas-liquid mixing device according to any one of claims 1 to 13,
    A stock solution supply source for supplying the stock solution to the stock solution inflow pipe;
    A gas supply source for supplying gas to the gas inlet pipe;
    A gas-liquid mixing system comprising: a control unit that controls supply of a stock solution from the stock solution supply source to the stock solution inflow tube and supply of gas from the gas supply source to the gas inflow tube.
15. A method for producing a gas mixture by mixing a gas in a stock solution,
    A gas-liquid mixing device according to any one of claims 1 to 13 is provided,
    The stock solution is continuously supplied to the stock solution inflow pipe, and at the same time, the gas is continuously supplied to the gas inflow pipe, thereby mixing the stock solution and the gas by facing each other and mixing them,
    A method comprising flowing the obtained mixture of stock solution and gas into the mixed solution pipe.

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