JP2007185576A - Apparatus for dissolving gas and apparatus for preparing water wherein gas is dissolved - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for dissolving a gas into a liquid capable of increasing gas solubility without using a separate and additional equipment. <P>SOLUTION: The apparatus capable of dissolving a large amount of gas into a liquid comprises a spiral flow formation zone 5 disposed in the upstream of a cylindrical casing 4, a gas-liquid reaction zone 6 disposed in the down stream of the cylindrical casing 4, and an ultrasonic generator 3 disposed on the cylindrical casing 4 for irradiating the gas and liquid in the spiral flow formation zone 5 or in the liquid-gas reaction zone 6 with an ultrasonic wave, whereby a large amount of gas can be dissolved into a liquid by virtue of a combination of the mixing action and ultrasonic action. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  In the present invention, liquids such as water, seawater, various beverages (drinking water, coffee beverages, fruit beverages (juice), tea, soft drinks), air, oxygen, ozone, carbon dioxide, nitrogen, chlorine, hydrogen, argon, etc. The present invention relates to a gas dissolving device and a gas-dissolved water generating device for dissolving the gas (gas).

  Conventionally, as a technique for dissolving gas in a liquid, a technique for diffusing gas bubbles into the liquid has been known. However, a gas with a large bubble diameter has a large buoyancy and rapidly rises in the liquid (liquid phase). Ruptured and diffused into the gas phase, so the gas solubility in the liquid was low.

As an improvement measure, as a gas dissolving device, a cylindrical casing described in claim 3 of Japanese Patent Laid-Open No. 10-66850 (Patent Document 1); two semi-elliptical blades with a cylindrical side edge on a cylindrical side A triangular partition plate that is symmetrically crossed with respect to the axial center of the casing and faces the chord side edges of the blades upstream of the crossing portion to bisect the transverse section of the cylindrical casing. A current guide vane in which the arc side edge of the blade is coupled to the inner peripheral wall of the cylindrical casing; and a hemispherical head and a reverse truncated frustoconical leg, A gas-liquid comprising: a reverse truncated-conical truncated-conical leg toward the axial direction of the cylindrical casing; and a plurality of stirring bodies radially fixed to the inner peripheral wall of the cylindrical casing on the downstream side of the current-transforming guide vane. A mixing device was developed.
However, in this gas-liquid mixing device, invisible fine bubbles dissolved in the liquid are mixedly generated from the visible fine bubbles, and in a practically operating manufacturing device, countless fine bubbles are contained in the liquid in the processing tank. Floats slowly in the liquid (floating rise), and even if it is sufficient as fine-grained mixed water, the solubility is lower than it looks, and depending on the application, the solubility is insufficient as gas-dissolved water. It was.

Therefore, as a gas-dissolved water generating device, a raw water supply path for continuously supplying raw water to a gas-dissolving treatment tank described in claim 2 of JP-A-10-66850 (Patent Document 1), A treated water discharge system for continuously discharging treated water, and a circulation system for returning gas to the treatment tank after mixing gas into the water discharged from the treatment tank via a gas-liquid mixing device, and these One or more of the raw water supply system, the treated water discharge system, and the circulation system are provided with flow control means capable of adjusting the flow rate, and the flow control means allows the flow rates of the raw water supply system and the treated water discharge system to be adjusted. And the flow rate of the raw water supply system or the treated water discharge system and the circulation system can be adjusted to adjust the gas solubility of the treated water in the treatment tank. A water-type gas dissolver has been developed.
However, with this continuous water-flow type gas dissolving device, the gas solubility can be increased or adjusted, but this is not a fundamental technology for increasing the solubility with a gas dissolving device (gas-liquid mixing device). In order to achieve this, the circulation ratio and the circulation time must be increased, and the pumping capacity must be increased, resulting in poor dissolution efficiency.

Japanese Patent Laid-Open No. 10-66850

  The problem to be solved is to increase the gas solubility.

  The present invention is based on the above prior art, and in view of the problem that gas solubility is limited or a separate device is required for increasing the solubility, a spiral flow forming portion and a gas-liquid reaction portion are respectively provided in the upstream and downstream portions of the cylindrical casing. A large amount of gas is dissolved in the liquid by combining the mixing action and the ultrasonic action by providing an ultrasonic irradiator in the cylindrical casing that irradiates the liquid and gas inside the spiral flow forming part or gas-liquid reaction part with ultrasonic waves. In this way, the above problem is solved.

  In short, the present invention provides a spiral flow forming portion and a gas-liquid reaction portion in the upstream and downstream portions of a cylindrical casing, respectively, and an ultrasonic irradiator that irradiates the gas-liquid inside the spiral flow formation portion or the gas-liquid reaction portion with a cylinder. Because it is provided in the casing, the gas-liquid contact is diversified and the solubility is increased by combining the mixing action by shearing, stirring, collision, etc. by the spiral flow forming part and the gas-liquid reaction part and the action of vibration and pressure change of the particles by ultrasonic waves. I can do it.

  According to the invention according to claim 2, gas dissolved water can be temporarily stored in a large-capacity storage tank, and can easily cope with an increase or decrease in the flow rate of the other system of the discharge destination, or can be stabilized by the storage tank. Equalization processing can be performed.

  According to the third aspect of the present invention, the practical effect such as the ability to further increase the solubility by dissolving and reprocessing the gas dissolved water in the storage tank is significant.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a gas dissolving device 1 for dissolving a gas according to the present invention in a liquid at a high concentration has an ultrasonic irradiation body 3 at a required position of a continuous water flow type gas-liquid mixing device (static mixer) 2. It is provided.
As a basic configuration, as shown in FIGS. 1 and 2, a spiral flow forming section 5 that mixes gas and liquid by shearing, stirring, collision, turbulent flow or the like in the upstream and downstream portions of the cylindrical casing 4 through which the mixed gas and liquid are continuously passed. And gas-liquid reaction unit 6, and gas dissolver 1 in which ultrasonic casing 3 is provided in cylindrical casing 4 to irradiate and act on the gas-liquid in spiral flow forming unit 5 or gas-liquid reaction unit 6. .

Specific examples will be described below.
As shown in FIG. 1, the continuous water passage system 7 is a gas that supplies a gas such as oxygen or ozone as a solute to a liquid supply system path 8 that supplies liquid (raw water) such as water or soft drink as a solvent. A supply system 9 is connected, and a pump 10 is connected in the middle, and a gas dissolving device 1 is provided in the continuous water system 7 on the downstream side of the pump 10.
With this configuration, the liquid and gas are mixed and pumped by the pump 10 or the like, and the gas / liquid mixture flows into the cylindrical casing 4 of the gas dissolving apparatus 1, and the gas / liquid mixing apparatus 2 and the ultrasonic irradiator 3 act to gas. Dissolved water is produced.

The gas-liquid mixing is performed by finely dividing the liquid and gas with the stirring blades in the pump 10, but the primary gas-liquid mixing may be performed by another method, for example, the liquid mixed in the sealed container Gas may be injected and dissolved under pressure.
In addition, when primary gas-liquid mixing is performed with the pump 10 or the sealed container, the gas supply system path 9 is connected to the liquid supply system path 8 to perform gas-liquid mixing. The gas may be supplied directly, or the gas may be supplied between the pump 10 and the gas dissolving device 1, immediately before the gas dissolving device 1, or to the spiral flow forming unit 5 of the gas dissolving device 1.
That is, the primary gas-liquid mixing method is not limited as long as the gas-liquid mixture applied with pressure in the flow direction is continuously passed through the cylindrical casing 4 of the gas dissolving apparatus 1.

FIG. 2 is a cross-sectional view of the gas dissolving device 1 in which the spiral flow forming portion 5 and the ultrasonic irradiator 3 are not cross-sectioned. The spiral flow forming portion 5 is provided in the upstream portion inside the cylindrical casing 4 with the entrances 11 and 12 opened. The gas-liquid reaction unit 6 is installed in the downstream portion inside the cylindrical casing 4 and the ultrasonic wave is generated outside the cylindrical casing 4 immediately after the downstream end of the spiral flow forming unit 5 and at the upstream portion of the gas-liquid reaction unit 6. An irradiation body 3 is provided.
Note that the position where the ultrasonic irradiator 3 is attached to the cylindrical casing 4 may be any position that irradiates and acts on the gas-liquid mixture flowing inside the cylindrical casing 4. The ultrasonic irradiation body 3 may be attached to the outside of the cylindrical casing 4 of the gas-liquid mixing device 2 so as to be used as an internal gas-liquid mixture. Although indirectly irradiating, an attachment hole may be opened in the cylindrical casing 4, and the irradiation portion 3a of the ultrasonic irradiator 3 may be attached to the attachment hole to directly irradiate the mixture gas with ultrasonic waves.
Further, outside the upstream and downstream ends of the cylindrical casing 4, contact flanges 13 and 13 a are provided in addition to the piping of the continuous water passage system 7.

Next, an example of a specific example of the spiral flow forming unit 5 and the gas-liquid reaction unit 6 provided in the gas-liquid mixing device 2 of the gas dissolving device 1 will be described.
The spiral flow forming portion 5 provided at the upstream portion of the cylindrical casing 4 is formed by arranging two semi-elliptical blades 14 and 14a inclined in the upstream and downstream directions, and the chord side edge of the blades 14 and 14a. 15 and 15 a are symmetrically crossed and opposed to the axis of the cylindrical casing 4, and the arcuate side edges 16 and 16 a of the blades 14 and 14 a are joined to the inner peripheral wall of the cylindrical casing 4.
Also, between the chord side edges 15 and 15a at the upstream side of the intersection of the two blades 14 and 14a, the cylindrical casing 4 has a substantially triangular plate divider 17 that bisects the transverse section. ing.
Further, in order to integrate the two blades 14 and 14a and the partition plate 17, a round bar connecting body 18 is arranged in the axial direction of the cylindrical casing 4, and the blade plates 14 and 14a and the partition plate 17 are arranged. The blades 14 and 14a and the divider 17 are connected to the connecting body 18 by cutting out the required portions.

The gas-liquid reaction part 6 provided in the downstream part of the cylindrical casing 4 includes a tapered wall 19 whose inner diameter gradually decreases toward the downstream side, a horizontal wall 20 having a constant inner diameter, and a taper wall 21 whose inner diameter gradually increases. It comprises a terrace portion 22 and a number of protrusions 23, 23a... Standing upright from the horizontal wall 20 of the terrace portion 22 in the axial direction of the cylindrical casing 4.
The protrusions 23, 23a are inclined rearwardly, every 90 degrees in the circumferential direction, and adjacent comrades are divided up and down. Overall, the protrusions 23 are formed in a spiral shape every 90 degrees inside the cylindrical casing 4. 23a… is erected.

The gas / liquid mixing device 2 having the spiral flow forming section 5 and the gas / liquid reaction section 6 splits the mixed gas / liquid fed from the inlet 11 of the cylindrical casing 4 into two parts by the partition 17 of the spiral flow forming section 5. At the same time, it flows along the blades 14 and 14a to form a spiral flow and passes through the spiral flow forming portion 5.
When passing through the spiral flow forming section 5, the flow form is divided or changed in direction by the blades 14, 14 a including the connecting body 18 and the partition plate 17, and large shear stress, turbulent flow, stirring action, etc. are generated in the gas-liquid mixture .
Further, due to the spiral flow caused by the passage of the spiral flow forming portion 5, the liquid component having a relatively large mass among the gas-liquid components moves radially outward by the inertial force, and the gas component having a relatively small mass moves to the inside of the radius. This movement action also causes a stirring action and the like.

Then, when the mixed gas / liquid in the spiral flow that has passed through the upstream spiral flow forming section 5 in the gas / liquid mixing apparatus 2 flows into the downstream gas / liquid reaction section 6, the spiral flow is cylindrical at the tapered wall 19 of the terrace 22. It moves in the axial direction of the casing 4 and collides with a number of protrusions 23, 23a... On the horizontal wall 20 of the terrace 22 to generate shear stress, stirring action and the like.
Due to shear stress, stirring action, collision and turbulent flow generated when passing through the spiral flow forming part 5 and the gas-liquid reaction part 6, the gas and liquid become fine particles, fine particles, particle groups, and so on. Receives a complex mixing action, the gas and liquid come into contact, and some of the gas particles dissolve in the liquid, and some of them become fine particles and fine bubbles. Will receive.

The spiral flow forming section 5 provided in the gas-liquid mixing device 2 is composed of blades 14 and 14a, a partition plate 17 and a connecting body 18, but the mixed gas-liquid flowing from the inlet 11 of the cylindrical casing 4 is supplied. Various things can be used regardless of the specific structure of the spiral flow formation part 5, if it is made to flow to the gas-liquid reaction part 6 as a spiral flow.
The gas-liquid reaction part 6 provided in the gas-liquid mixing apparatus 2 is composed of a terrace part 22 and protrusions 23, 23a..., Shearing and stirring for exciting the mixing action of fine and fine gas-liquid particles. In addition to the terrace portion 22 and the protrusions 23, 23a, etc., various types of elements such as collision and turbulent flow can be used.
For example, a honeycomb-like resistance circulation body having a large number of flow holes is intermittently arranged, or the flow holes are shifted in phase, or the blades 14 and 14a and the divider 17 in the spiral flow forming portion 5 are arranged. Such plate bodies are arranged sequentially and continuously in the same direction, with the same inclination and phase change, and the projections 23, 23a may be of various shapes or plate shapes, that is, gas-liquid reaction Various components can be used regardless of the specific configuration of the gas-liquid reaction unit 6 as long as the mixed gas-liquid in the spiral flow can be mixed by shearing, stirring, collision, turbulent flow or the like in the unit 6.

Next, the operation of the gas dissolving apparatus according to the present invention will be described.
The overall action of the gas dissolving device 1 in which the ultrasonic irradiation body 3 is provided in the gas-liquid mixing device 2 is due to shearing, stirring, mixing, and the like by the spiral flow forming unit 5 and the gas-liquid reaction unit 6 of the gas-liquid mixing device 2. By combining the partial dissolution action and the action of vibration and pressure change of particles by ultrasonic waves, the dissolution rate, solubility (including supersaturation) and dissolution efficiency of the gas in the liquid are increased and improved.
The ultrasonic wave of 20 to 100 KHz irradiated from the ultrasonic irradiation body 3 reaches the gas-liquid mixture in the cylindrical casing 4 by spreading from the center of the irradiation part 3a of the ultrasonic irradiation body 3 through the cylindrical casing 4. Reflected by the inner wall surface of the cylindrical casing 4, the blades 14, 14a, the projections 23, 23a, etc., and propagates in various directions.

When the ultrasonic wave reaches the gas-liquid mixture, the liquid particles, gas particles, gas particle groups (bubbles) undergo a pressure change, particles vibrate and move at a considerable speed and acceleration, and the kinetic energy rises. Alternatively, the gas-liquid interface between a large number of different kinds of particles changes variously by performing volume vibration that repeatedly expands and contracts in a non-linear manner (a situation where the bubble volume has a time difference or direction difference between expansion and contraction).
By changing the gas-liquid interface, the collision area between gas particles and liquid particles, the contact area / time is increased, or the contact particles are converted, so that the chances of contacting different particles dramatically increase, and the gas dissolves in the liquid. To do.

  Therefore, dissolution by mixing of gas and liquid in the gas-liquid mixing device 2, vibration of gas particles, liquid particles, and gas particle groups (bubbles) generated by ultrasonic waves irradiated from the ultrasonic irradiation body 3, pressure change, etc. Dissolution by the gas-liquid interface change excited by the simultaneous generation occurs, and the solubility of the gas in the liquid increases.

A comparative test using the gas dissolving apparatus 1 according to the present invention and the conventional gas-liquid mixing apparatus 2 will be described below.
The conventional gas-liquid mixing device 2 is a line mixer (model MX-8X) manufactured by Nagoya Oshima Machinery Co., Ltd., and the pump 10 is an air-mixing pump (model OMC-20-6) having a stirring action manufactured by Oshima Machinery Co., Ltd. used.
The gas dissolving device 1 according to the present invention uses a conventional gas-liquid mixing device 2 (same model MX-8X) provided with an ultrasonic irradiation body 3 and the same gas mixture pump (model OMC-20). -6) was used, and the ultrasonic irradiator 3 was an ultrasonic vibrator (model TBL4535D-40DB) manufactured by Tamura Corporation.
In both test conditions, the liquid is water (water temperature 20 ° C.), the gas is oxygen (concentration 90%), the liquid flow rate is 15 l / min, the gas flow rate is 1.5 Nl / min, and the ultrasonic wave has a resonance frequency of 40 KHz and an output of 40 W. did.
As a result of visual test, fine bubbles were suspended in water in the conventional one, but in the case of the present invention, there was no bubble and the solubility increased.
Further, in the analysis of the dissolved oxygen concentration at a water temperature of 20 ° C., the saturated dissolved oxygen concentration at a water temperature of 20 ° C. is 8.84 mg / l, whereas the conventional one is 36.5 mg / l. According to the present invention, it was 48.0 mg / l, and both the conventional one and the one according to the present invention were supersaturated, but the one according to the present invention was dissolved in a further supersaturated state.

Next, the gas dissolved water production | generation apparatus which concerns on this invention is demonstrated.
As shown in FIG. 3, the gas-dissolved water generating device 24 temporarily stores the gas-dissolved water generated by flowing through the continuous water passage 7 provided with the gas-dissolving device 1 in a storage tank 25 and averages and stabilizes it. , Secondary treatment, etc. are performed, and the gas-dissolved water is discharged to another system.
Specifically, a dissolved water inflow system 26 for generating and flowing in gas dissolved water and a water discharge system 27 for discharging the stored gas dissolved water to other systems are formed at the upper and lower portions of the large-capacity storage tank 25. In addition to providing each, a liquid level control device 28 for measuring the level of the dissolved gas in the storage tank 25 and controlling various valves and connected devices is provided as a basic configuration of the dissolved gas generating device 24.
The gas dissolving device 1 is provided on the downstream side of the dissolved water inflow system path 26 which is the continuous water flow system path 7, and the gas / liquid supply system path 29 for supplying gas and liquid to the upstream side of the dissolved water inflow system path 26 and pumping them. The outlet 12 of the gas dissolving apparatus 1 is connected to an inlet 30 provided at the lower part of the storage tank 25.
The specific configuration of the gas-liquid supply path 29 on the upstream side of the dissolved water inflow path 26 is the same as that on the upstream side of the continuous water flow path 7 shown in FIG. The gas supply system 9 is connected to the system path 8, and the pump 10 is connected to the middle portion of the gas path 9. The gas dissolving device 1 is connected to the dissolved water inflow system path 26 downstream of the pump 10 of the gas-liquid supply system path 29. Is provided.
The base end of the water storage / discharge system 27 is connected to an outlet 31 provided in the upper part of the storage tank 25, and the tip of the water storage / discharge system 27 is connected to another system.

  With this configuration, the gas / liquid mixture pumped in the gas / liquid supply system passage 29 passes through the spiral flow forming section 5 and the gas / liquid reaction section 6 of the gas dissolving device 1 provided in the dissolved water inflow system path 26 and is mixed. At the same time, the ultrasonic irradiator 3 irradiates ultrasonic waves to generate gas-dissolved water. The gas-dissolved water flows from the bottom of the reservoir 25 and is discharged from the upper portion of the reservoir 25 to another system by the overflow method. Is done.

  The pump 10 in the dissolved water inflow system path 26 is provided with a pressure control device PS1 and a gas-liquid mixing pump pressure gauge PR2, and the liquid supply system path 8 is provided with an inlet valve V1 and a strainer S1. The passage 9 is provided with a gas supply device GG, a supply gas pressure gauge PR1, a supply gas flow meter FM1, and a check valve CV1, and a processing valve V2 is provided in the middle of the water storage and discharge system passage 27.

Next, another example of the gas-dissolved water generator 24a will be described.
The gas-dissolved water generating device 24a of another example shown in FIG. 4 increases the solubility or easily copes with a large amount of use compared to that of FIG.
Specifically, in the upper and lower portions of the large-capacity storage tank 25, a dissolved water inflow system path 26 that generates and flows gas dissolved water, a water discharge system 27 that discharges the stored gas dissolved water to another system path, A storage water return system path 32 for returning part of the dissolved gas water to the dissolved water inflow system path 26 and a liquid supply system path 8 for supplying raw water are provided, and a liquid level control device 28 is provided in the storage tank 25.
In addition, a dissolved water inflow system path 26 whose downstream end is connected to the storage tank 25 and a storage water return system path 32 whose upstream end is connected to the storage tank 25 are connected to provide a circulation system path 33, and the second gas This is the basic configuration of the dissolved water generating device 24a.

The gas dissolving device 1 is provided on the downstream side of the dissolved water inflow route 26 which is the continuous water flow route 7, and the outlet 12 of the gas dissolving device 1 is connected to the inlet 30 provided at the lower part of the storage tank 25 to The upstream side of the inflow system path 26 is formed with a gas-liquid supply system path 29 for supplying and pumping gas and liquid, and the downstream side of the water discharge system path 27 connected to the outlet 34 provided in the lower part of the storage tank 25. A circulation system path 33 is configured by connecting the upstream side of the liquid supply system path 29.
In addition, a pump 10 for pumping the gas-liquid mixture is connected to the middle of the gas-liquid supply path 29 that is a part of the circulation path 33, and the gas supply system 29 is connected to the gas-liquid supply path 29 of the circulation path 33. The gas dissolving device 1 is provided in the dissolved water inflow system 26 on the downstream side of the pump 10 of the gas-liquid supply system 29, and the liquid supply system is connected to the inlet 35 provided in the upper part of the storage tank 25. 8 is connected.
Although the liquid supply system path 8 for newly supplied liquid (raw water) is connected to the storage tank 25, it may be connected to the circulation system path 33 in the same manner as the gas supply system path 9.
In addition, the proximal end of the water storage / discharge system 27 is connected to an outlet 31 provided at the lower part of the storage tank 25, the tip of the water discharge / discharge system 27 is connected to another system, and a pump 36 is disposed in the middle. ing.

With this configuration, part of the gas-dissolved water (liquid (raw water) newly supplied in the liquid supply system 8 and mixed water of gas-dissolved water (hereinafter simply referred to as “mixed water”)) stored in the storage tank 25 is Then, it flows from the stored water return system path 32 to the circulation system path 33, mixes and flows with the new gas supplied from the gas supply system path 9, and is pumped to the dissolved water inflow system path 26 by the pump 10.
The mixed gas / liquid (mixed water / gas mixed gas / liquid) pumped to the dissolved water inflow system 26 passes through the spiral flow forming section 5 and the gas / liquid reaction section 6 of the gas dissolving apparatus 1 and is mixed. Ultrasound is irradiated by the ultrasonic irradiator 3 to generate gas-dissolved water (gas-dissolved water having higher gas solubility than the mixed water flowing from the water storage and discharge system 27), and the gas-dissolved water flows from the bottom of the storage tank 25. To do.
In the storage tank 25, gas dissolved water is stored, and raw water is supplied from the liquid supply system 8 and mixed, and a part of the mixed water from the lower part of the storage tank 25 is stored in a storage water return system 32, a circulation system. A part of the mixed water is discharged to another system through a water discharge system 27 having a pump 36.

  As in the previous example, the pump 10 and the gas supply line 9 are equipped with various instruments, the liquid supply line 8 is provided with an inlet valve V1, and the water return line 32 is provided with a circulation valve V3 and a strainer. S1 is provided, and a pump 36 and a processing valve V2 are provided in the middle of the water storage and discharge system 27.

In addition, although the outlet 12 of the gas dissolving device 1 in the dissolved water inflow route 26 which is also the continuous water flow passage 7 is directly connected to the inlet 30 of the storage tank 25, a pipe is connected to the downstream side of the gas dissolving device 1 for storage. The tank 25 may be connected, or the gas dissolving apparatus 1 may be entirely or partially disposed in the storage tank 25.
Also, the dissolved water inflow system path 26 in the gas dissolved water generating apparatus 24 in FIG. 3 is provided in the lower part, and the water storage and discharging system path 27 is provided in the upper part, respectively, to form an overflow system, or in the gas dissolved water generating apparatus 24 in FIG. Although the flow rate is controlled by providing a pump 36 in the water storage / discharge system 27, these can be used properly, and the mounting position of the various systems on the storage tank 25 can be changed as appropriate.

It is a figure which shows the basic system structural example using the gas dissolving apparatus which concerns on this invention. It is sectional drawing (a part is non-cross section) of the gas dissolving apparatus which concerns on this invention. It is a mimetic diagram showing the composition of the gas dissolution water generating device concerning the present invention. It is a schematic diagram which shows the structure of another gas dissolved water production | generation apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gas dissolution apparatus 2 Gas-liquid mixing apparatus 3 Ultrasonic irradiation body 4 Cylindrical casing 5 Spiral flow formation part 6 Gas-liquid reaction part 7 Continuous water flow system 8 Liquid supply system path 9 Gas supply system path
10 Pump
24, 24a Gas dissolved water generator
25 Reservoir
26 Dissolved water inflow system
27 Reservoir system
29 Gas-liquid supply system
32 Reservoir return route
33 Circulation system

Claims (3)

  A spiral flow forming part and a gas-liquid reaction part are provided in the upstream and downstream parts of the cylindrical casing, respectively, and an ultrasonic irradiator that irradiates the liquid and gas inside the spiral flow forming part or the gas-liquid reaction part is provided in the cylindrical casing. A gas dissolving apparatus characterized by the above.   The storage tank is provided with a dissolved water inflow system path and a stored water discharge system path, respectively, the gas dissolving device according to claim 1 is provided downstream of the dissolved water inflow system path, and a gas and liquid are provided upstream of the dissolved water inflow system path. A gas-dissolved water generating apparatus characterized in that a gas-liquid supply system path for supplying and pumping water is provided.   Dissolved water inflow system, stored water return system path, and stored water discharge system path are provided in the storage tank, and a circulation system path is provided by connecting the dissolved water inflow system path and the stored water return system path, downstream of the dissolved water inflow system path. The gas dissolving device according to claim 1 is provided on the side, a pump for pumping gas and liquid is provided in the circulation path, a gas supply path is connected to the circulation path, and a liquid supply system is connected to the circulation path or storage tank. A gas-dissolved water generating apparatus characterized in that a path is provided.

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