JP2002143658A - Bubble water manufacturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a means for efficiently manufacturing bubble water by dispersing fine bubbles in water with a compact device. SOLUTION: This bubble water manufacturing device has a mixed phase flow forming chamber having a flow-in water nozzle and a gas suction pipe, a cylindrical turning turbulent chamber connected thereto and having a discharge port at another end, and a turning flow forming means for turning the flow in the turning turbulent chamber in the peripheral direction. The bubble water is manufactured by sucking a gas from a gas suction pipe by a negative pressure generated by the water jet flowing-in from the flow-in water nozzle to form the gas-liquid mixed flow in the mixed phase flow forming chamber, introducing the mixed phase flow into the turning turbulent chamber and turning the flow by the turning flow forming means to disperse the bubble in the mixed phase flow.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a bubble water producing apparatus for efficiently producing bubble water in which fine bubbles are dispersed in water.

[0002]

2. Description of the Related Art As an example of the prior art for producing bubbled water, there is a method shown in FIG. In FIG. 6, the apparatus supplies air and water to a bubble water producing device 35 of various types through an air supply pipe 33 and a water supply pipe 34 using an air compressor 31 and a water supply pump 32, respectively. Within this 2
The seed fluid is agitated and mixed to form bubble water, which is released into the water.

[0003]

The prior art shown in FIG. 6 has the following problems. (1) Feeding power (energy) of fluid for producing bubble water
In addition, it is necessary to use a plurality of facilities including an air compressor and a water pump, resulting in waste of power consumption, facility cost, installation space, and the like. (2) When used in a deep-layer liquid, it is necessary to increase the air pressure in accordance with the water depth, and there is a problem that the power of the air compressor increases. (3) In the apparatus shown in FIG. 6, gas and liquid flow into the bubble water production device via dedicated flow paths, respectively, and a gas-liquid two-phase flow is created therein. For the purpose of adding a third gas, liquid or solid to bubble water to create a three-phase flow consisting of gas-liquid-gas, gas-liquid-liquid, gas-liquid-solid, it is possible separately. Combined use of equipment was required. (4) It is desirable that fine bubbles are uniformly dispersed in the bubble water. However, there is still a problem in the prior art regarding efficient reduction and dispersion of bubbles in a compact device. Was.

The present invention has been made to solve the above-mentioned problems of the prior art, and does not require an air compressor for producing bubble water, and uses bubble water in which fine bubbles are uniformly dispersed. It is an object of the present invention to provide a means for producing bubbled water which can be efficiently produced by a compact apparatus and can easily form a three-phase flow.

[0005]

A first aspect of the present invention for solving the above-mentioned problems is that a multi-phase flow forming chamber having an inflow water nozzle and a gas suction pipe is connected to one end of the multi-phase flow forming chamber. A swirling flow turbulence chamber having a discharge port at an end; and a swirl flow forming means for swirling the flow in the swirl turbulence chamber in a circumferential direction, wherein a negative flow generated by a jet of water flowing from the inflow water nozzle is provided. A gas is sucked from the gas suction pipe by pressure to form a gas-liquid multiphase flow in the multiphase flow forming chamber, the multiphase flow is introduced into the swirling turbulent chamber, and the swirling flow forming means turns the same. A bubble water in the mixed phase flow, and the bubble water in which the bubbles are dispersed is discharged from the outlet.

The swirling flow forming means may be a free-rotating swirling blade or a fixed spiral blade disposed coaxially with the cylindrical swirling turbulence chamber. In this swirling flow forming means, at least an end of the center axis of the swirling blade or the spiral blade on the side of the mixed phase flow forming chamber is formed by a hollow cylinder having both ends opened, and the mixed phase flowing into the swirling turbulent flow chamber is formed. It is preferable that a part of the flow circulates in the hollow cylinder and the remaining part forms a swirling flow by the swirling blade or the spiral blade.

The swirling flow forming means flows at least a part of the multi-phase flow flowing out of the multi-phase flow forming chamber into the vicinity of an end side wall of the swirling turbulent flow chamber on the side of the multi-phase flow forming chamber in a cut line direction. The swirling flow may be formed by the inertial force of the multi-phase flow.

Further, the swirling flow forming means is based on the inertial force of the driving water injected in a cutting line direction from an injection nozzle provided on a side wall near an end of the swirling turbulent flow chamber on the side of the multiphase flow forming chamber. There may be.

In the second aspect of the present invention, a multi-phase flow forming chamber having an inflow water nozzle and a gas suction pipe, a flow divider downstream thereof, and a cylindrical swirling turbulent flow chamber downstream thereof are connected in series. Gas is suctioned from the gas suction pipe by a negative pressure generated by the jet of water flowing from the inflow water nozzle to form a gas-liquid multiphase flow in the multiphase flow forming chamber, and the multiphase flow is divided by the flow divider. A part of which flows axially into the swirling turbulence chamber,
The remainder is flowed in the direction of the dashed line near the inlet of the swirling turbulence chamber, and the swirling flow is formed in the swirling turbulence chamber by the flow in the cutting line direction to disperse the bubbles in the multiphase flow. Is discharged from an outlet disposed downstream of the swirling turbulence chamber.

In the bubble water producing apparatus according to the second aspect of the invention, the flow divider is formed in a cylindrical shape having a diameter larger than that of the cylindrical swirling turbulent flow chamber, and a distribution chamber is provided upstream in the inside thereof, and the swirl is provided downstream. A turbulence chamber and a cylindrical inflow chamber having substantially the same diameter are provided, and the two chambers are partitioned by a partition plate. Directional inlet, and a flow path communicating from the distribution chamber to the incision direction inlet is provided, and a part of the multiphase flow in the distribution chamber is axially moved from the inlet at the center of the partition plate to the remainder. May flow into the swirling turbulent chamber from the inflow port of the side wall in the direction of the dashed line.

In the above-mentioned cylindrical flow divider, a hollow circular tube projecting from an inlet at the center of the partition plate to a predetermined position in the swirling turbulent chamber is disposed, and a distal end face of the hollow circular tube and / or An opening may be provided on the side wall surface so that the multiphase flow flowing into the inlet at the center of the partition plate may flow out of the opening.

In the case where the above-mentioned flow divider is used, it is preferable to provide a flow control means for controlling the flow rate of the multiphase flow flowing in the flow passage in the flow passage.

Further, in any case of using the above-mentioned flow divider, the plurality of inflow lines in the cut line direction are arranged at positions different from each other in the axial direction from the partition plate. You may.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic sectional view of a bubble water producing apparatus according to a first embodiment of the present invention. The apparatus comprises a mixed-phase flow forming chamber 3 having an inflow water nozzle 1 and a gas suction pipe 2 and a cylindrical swirling turbulent chamber 4. One end of the swirling turbulent chamber 4 is connected to the multi-phase flow forming chamber 3. The other end is provided with an outlet 5 for bubbled water.

In the swirling turbulence chamber 4, a free-rotating swirling blade 6 is provided coaxially (so that the cylindrical axis of the swirling turbulence chamber coincides with the rotation axis of the swirling blade). Swirl blade 6
The rotary shaft 7 is formed of a hollow circular tube having both open ends, and is rotatably supported by a support member (not shown).

Inflow water 8 is supplied to the inflow water nozzle 1 from a water supply pump (not shown), and a negative pressure is generated around a water jet (indicated by an arrow 9) at the tip of the nozzle. External air (indicated by an arrow 10) is sucked from the suction pipe 2, and a gas-liquid multiphase flow is formed in the multiphase flow forming chamber 3.

The entire amount of the multiphase flow flows into the swirling turbulent flow chamber 4, but a part of the multiphase flow flows through the hollow rotary shaft 7, and the remainder flows around the rotary shaft. Drive rotationally. Due to the rotational movement of the swirling blades 6, a swirling flow is formed in the swirling turbulence chamber 4 while swirling in the circumferential direction, and the swirling flow promotes the miniaturization and dispersion of bubbles.

Downstream of the swirl vanes 6, the axial flow flowing through the rotary shaft 7 and the swirl flow are combined, and turbulence is generated in this portion, and the turbulence also causes the bubbles to become finer and dispersed. Is promoted.

In the first embodiment described above, the swirl blade 6 does not need to have a length extending over the entire length of the swirl turbulence chamber 4, but may be formed in a predetermined range on the inlet side. Further, the hollow portion of the rotating shaft 7 does not necessarily have to have a length extending over the entire length of the swirling blade 6, and at least the inlet end thereof is hollow, and the downstream rotating shaft may be a round bar. (In this case, an opening may be provided at the joint between the hollow portion and the round bar).

In the present invention, the rotating shaft 7 of the swirling blade 6 may be a solid shaft over the entire length.
This may be a fixed spiral blade that does not rotate. In any of these, swirling motion is given to the multiphase flow in the swirling turbulent chamber, which considerably promotes dispersion and miniaturization of bubbles.

However, if the upstream portion of the shaft of the swirling blade or the spiral blade is made hollow and the multi-phase flow circulates inside the shaft, the axial flow and the swirling flow are generated at the downstream portion of the swirling turbulence chamber. The collision and interference generate turbulence, which further promotes dispersion and miniaturization of bubbles. The shape of the multiphase flow forming chamber 3 is generally cylindrical, but is not necessarily limited to this.

FIG. 2 is a schematic sectional view of a bubble water producing apparatus according to a second embodiment of the present invention. In this apparatus, the configuration of the multiphase flow forming chamber 3 is the same as that of the first embodiment of FIG. 1, but the swirling turbulence chamber 4 is formed of a cylinder having a larger diameter than that of the first embodiment. The flow flowing out of the turbulent flow chamber 4 is guided by the conduit 11 to the vicinity of the wall surface at the end of the swirling turbulent flow chamber 4 (on the side of the multiphase flow forming chamber), and flows along the inner wall in the direction of the dashed line.

Due to the inertial force of the flow in the direction of the dashed line, a swirling motion is given to the multi-phase flow in the swirling turbulent chamber 4, thereby promoting the dispersion and miniaturization of bubbles in the multi-phase flow. The bubble water in which the bubbles are dispersed in this way is discharged from the discharge port 5 provided near the downstream end, as in the first embodiment.

FIG. 3 is a schematic sectional view of a bubble water producing apparatus according to a third embodiment of the present invention. This apparatus also has the same configuration of the multiphase flow forming chamber 3 as in FIG. 1, and the multiphase flow flowing out therefrom flows into the cylindrical turbulent flow chamber 4 in the axial direction. The swirling flow is formed in the flow chamber 4 by the inertial force of the driving water (indicated by the arrow 12 in the figure) injected into the same chamber.

That is, the diameter of the swirling turbulent flow chamber 4 is slightly larger than the diameter of the multi-phase flow forming chamber 3, and one or more injection nozzles 13 flowing in a cut line direction are provided on the wall near the upstream end thereof. The driving water 12 pressurized by a pump (not shown) is injected into the swirling turbulence chamber 4 through the water injection pipe 14 and the injection nozzle 13 in a cut line direction.

If the flow rate of the driving water is increased, a sufficiently developed swirling flow can be formed in the swirling turbulence chamber 4 even if the flow rate is relatively low. Since the multiphase flow flowing in the axial direction collides with and interferes with the swirling flow, the flow in the swirling turbulence chamber 4 becomes turbulent, so that the bubbles in the multiphase flow in the same chamber are sufficiently dispersed and miniaturized. Promoted.

FIG. 4 is a schematic sectional view of a bubble water producing apparatus according to a fourth embodiment of the present invention (an embodiment of the second invention).
4A is a diagram showing the overall configuration, FIG. 4B is an enlarged view of the flow divider, FIG. 4C is a cross-sectional view taken along the line AA of FIG. 4B, and FIG. It is the B section enlarged view of (b).

The apparatus comprises a multi-phase flow forming chamber 3 having an inflow water nozzle 1 and a gas suction pipe 2, and a flow divider 1 adjacent to the multi-phase flow forming chamber.
5 and a cylindrical swirling turbulence chamber 4 adjacent thereto are connected in series, and the multiphase flow generated in the multiphase flow forming chamber 3 is split by the flow splitter 15 and flows into the swirling turbulence chamber 4 The swirling turbulence chamber 4 is configured to be discharged from a discharge port 5 provided near the downstream end.

In this example, the flow divider 15 has a cylindrical shape having a diameter larger than that of the swirling turbulence chamber 4, and is coaxial with this (the flow divider 1).
5 and the cylindrical axis of the swirling turbulence chamber 4). In the flow divider 15, a cylindrical distribution chamber 16 is formed on the upstream side, and a cylindrical inflow chamber 17 having substantially the same diameter as the swirling turbulence chamber 4 is formed on the downstream side. It is separated by a plate 18. In addition, the inflow chamber 17 and the swirling turbulence chamber 4
They are continuously provided without any partitions or obstacles, and form a single cylindrical space integrally.

At the center of the partition plate 18, there is an axial inlet 1.
9 are provided, and two inlets 2 are provided on the side wall of the inflow chamber 17.
0 is provided, and the inflow port 20 is formed so as to flow in a cut line direction along the inner wall of the inflow chamber 17 as shown in FIG. In the flow divider 15, a flow path (consisting of an outer flow path 21, an axial flow path 22 and an inner flow path 23) for introducing a multiphase flow from the distribution chamber 16 to the inflow port 20 is provided. Is formed.

The partition plate 18 is provided with a hollow circular tube 24 protruding in parallel with the axis from the periphery of the central inflow port 19 to a predetermined position in the swirling turbulent chamber. The tip of 24 is open, and its side surface is provided with a plurality of slit-shaped openings.

In the apparatus shown in FIG. 4, the inflow water 8 is supplied to the inflow water nozzle 1, and a negative pressure is generated around the jet at the tip of the nozzle. The formation of the gas-liquid multiphase flow in the flow forming chamber is the same as in the first to third embodiments.

This multiphase flow flows into the distribution chamber 16, and a part of the multiphase flow passes through the hollow circular tube 24 as an axial flow from the inlet 19 at the center of the partition plate. It flows into the swirling turbulence chamber 4 from the opening. On the other hand, distribution chamber 16
The remaining part of the multi-phase flow inside flows through the flow paths 21, 22 and 23 in the flow divider in the direction of the incision from the inlet 20 on the side wall, and due to the inertial force of this flow, it enters the swirling turbulent flow chamber 4. Creates a swirling flow.

The swirling flow and the flow (axial and radial flows) flowing out of the hollow circular tube 24 collide and interfere with each other, and the multiphase flow in the swirling turbulence chamber 4 becomes turbulent.
This promotes dispersion and miniaturization of bubbles in the multiphase flow. In the swirling turbulence chamber 4, the water in the multiphase flow is pushed to the wall side by centrifugal force, and the bubbles collect around the hollow circular tube 24. Since the bubbles are dispersed, the bubble water in which the bubbles are uniformly dispersed can be discharged from the outlet 5.

The central inlet 19 of the partition plate 18 is
As shown in FIG. 4D, the downstream outlet portion is chamfered to form a tapered portion.
The multi-phase flow that flows in the axial direction from above smoothly expands in the hollow circular tube 24, so that stagnation near the partition plate 18 can be prevented.

Further, in the present embodiment, the flow divider 15
An adjustment screw 25 is disposed in each of the internal flow paths (each of the plurality of flow paths) as a means for controlling the flow rate of the multiphase flow flowing through the flow path.
It is configured so that the gap between the joints of the and 22 can be made variable. With such a flow control means, the ratio of the flow rate of the multiphase flow flowing into the swirling turbulent chamber in the axial direction to the flow rate flowing in the cut line direction can be arbitrarily adjusted, and an optimal bubble dispersion state can be obtained. Conditions can be selected on a trial basis.

In the second aspect of the present invention, the flow divider 15 has a function of dividing the multiphase flow flowing from the multiphase flow forming chamber 3 into the swirling turbulent flow chamber 4 into an axial flow and a cut line flow. The structure is not limited to the example shown in FIG. In the flow divider 15 of FIG. 4, the hollow circular tube 24 does not necessarily have to be provided, and the shape of the opening of the hollow circular tube 24 is not limited to the example of FIG.

FIG. 5 is a schematic sectional view showing another example of the structure of the flow divider in the fourth embodiment. In the example of FIG.
A plurality of inflow ports 2 that flow into the side surface of the inflow chamber 17 in the cut line direction
0 are provided at different levels (so that the axial distances from the partition plate 18 to the inflow port 20 are different from each other), thereby forming a turbulent flow inside the swirling flow and dispersing the bubbles. Miniaturization can be promoted.

Further, in the example of FIG. 5B, in addition to the above-described configuration, the inflow port 20 in the section line direction is provided obliquely with respect to the axial direction (so that the swirling flow proceeds downstream). Yes,
Thereby, the formation of the swirling flow becomes smoother.

In any of the first to fourth embodiments, the inflow water nozzle 1 may be replaced with a variable type to make the ratio of the diameter of the nozzle to the diameter of the multiphase flow forming chamber 3 variable. it can.
By adjusting the ratio of the diameter, the pressure and the flow rate of the inflow water, the degree of vacuum around the nozzle is changed, and the air-water ratio of the multiphase flow and the shape and size of the bubbles can be freely adjusted.

In the method of sucking air as in the present invention, it is easier to add a third gas, liquid or solid (powder) into the sucked air than in the case of using an air compressor. Thus, a three-phase flow of gas-liquid-gas, gas-liquid-liquid or gas-liquid-solid can be easily formed. For example, a third fluid or powder such as ozone, a liquid coagulant, and a nutrient can be sucked together with air to provide a higher use effect of bubble water.

[0042]

As described above, the following effects can be obtained by the bubble water producing apparatus of the present invention. (1) Efficiently disperse air bubbles with a relatively compact device
Miniaturization can be performed. (2) Since an air compressor is not used to supply air, power energy, equipment costs, required space, and the like can be reduced. (3) The diameter and amount of bubbles in the bubble water can be easily adjusted by replacing the inflow water nozzle, adjusting the flow rate and pressure of the inflow water, and the like. (4) Since the air is sucked, it is easy to add the third gas, liquid or solid into the suction airflow, and it is easy to use for the purpose of giving higher-order effects.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a bubble water producing apparatus according to a first embodiment of the present invention.

FIG. 2 is a schematic sectional view of a bubble water producing apparatus according to a second embodiment of the present invention.

FIG. 3 is a schematic sectional view of a bubble water producing apparatus according to a third embodiment of the present invention.

FIG. 4 is a schematic sectional view of a bubble water producing apparatus according to a fourth embodiment of the present invention.

FIG. 5 is a schematic sectional view showing another example of the structure of the flow divider in the fourth embodiment.

FIG. 6 is an explanatory diagram of a bubble water producing apparatus according to a conventional technique.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Inflow water nozzle 2 Gas suction pipe 3 Multiphase flow formation room 4 Swirling turbulence chamber 5 Outlet 6 Swirling blade 7 Rotating shaft of swirling blade 8 Inflow water 9 Water jet 10 Air 11 Multiphase flow conduit 12 Driving water 13 Injection nozzle 14 Injection pipe 15 Flow divider 16 Distribution chamber 17 Inflow chamber 18 Partition plate 19 Inflow port at center of partition plate 20 Inflow port side wall of inflow chamber 21 Outward flow path 22 Axial flow path 23 Inside flow path 24 Hollow circular pipe 25 Adjusting screw 31 Air compressor 32 Water pump 33 Air supply pipe 34 Water supply pipe 35 Bubble water generator

Claims (10)

[Claims] A multi-phase flow forming chamber having an inflow water nozzle and a gas suction pipe; a cylindrical swirling turbulent chamber having one end connected to the multi-phase flow forming chamber and having a discharge port at the other end; A swirling flow forming means for rotating a flow in the chamber in a circumferential direction, wherein a gas is suctioned from the gas suction pipe by a negative pressure generated by a jet of water flowing from the inflow water nozzle, and the multiphase flow forming chamber is To form a gas-liquid multi-phase flow, introduce the multi-phase flow into the swirling turbulence chamber, swirl by the swirling flow forming means to disperse the bubbles in the multi-phase flow, and remove the bubble water in which the bubbles are dispersed. An apparatus for producing bubbled water, wherein the apparatus is configured to be discharged from the outlet. 2. The bubble water production apparatus according to claim 1, wherein the swirling flow forming means is a free-rotating swirling blade or a fixed spiral blade disposed coaxially with the cylindrical swirling turbulent chamber. 3. An end of the central axis of the swirl vane or the spiral vane at least on the side of the multiphase flow forming chamber is constituted by a hollow cylinder having both ends opened, and one end of the multiphase flow flowing into the swirl turbulent chamber is provided. 3. The apparatus for producing bubbled water according to claim 2, wherein the portion circulates in the hollow cylinder, and the remaining portion forms a swirling flow by the swirling blade or the spiral blade. 4. The swirling flow forming means flows at least a part of the multi-phase flow flowing out of the multi-phase flow forming chamber into a vicinity of an end side wall of the swirling turbulent flow chamber on the side of the multi-phase flow forming chamber in a cut line direction. The bubble water producing apparatus according to claim 1, wherein the swirling flow is formed by the inertial force of the multiphase flow. 5. The method according to claim 1, wherein the swirling flow forming means is driven by an inertial force of driving water injected in a cut line direction from an injection nozzle provided on a side wall near an end of the swirling turbulent flow chamber on the side of the multiphase flow forming chamber. The bubble water producing apparatus according to claim 1. 6. A multi-phase flow forming chamber having an inflow water nozzle and a gas suction pipe, a flow splitter downstream thereof, and a cylindrical swirling turbulence chamber downstream thereof are connected in series. Gas is sucked from the gas suction pipe by the negative pressure generated by the inflow of the flowing water to form a gas-liquid multiphase flow in the multiphase flow forming chamber, and the multiphase flow is split by the flow splitter and a part thereof is separated. The swirling turbulence chamber is caused to flow in the axial direction, and the remaining part is caused to flow in the cut line direction near the inlet of the swirling turbulence chamber. A bubble water producing apparatus characterized in that bubbles are dispersed and the bubble water in which the bubbles are dispersed is discharged from a discharge port arranged downstream of the swirling turbulence chamber. 7. The flow divider has a cylindrical shape having a larger diameter than the cylindrical swirling turbulence chamber, and has a distribution chamber upstream of the inside thereof and a cylindrical shape substantially the same diameter as the swirling turbulence chamber downstream thereof. And a partition plate between the two chambers, an axial inflow port in the center of the partition plate, a plurality of incision direction inflow ports on the side wall of the inflow chamber, and the distribution chamber. A flow path that communicates with the inflow line in the cut line direction is provided, and a part of the multiphase flow in the distribution chamber is in the cut line direction from the inlet in the side wall in the axial direction from the inlet in the center of the partition plate. The apparatus for producing bubbled water according to claim 6, wherein the apparatus is configured to flow into the swirling turbulent chamber. 8. A hollow circular tube protruding from an inlet at the center of the partition plate to a predetermined position in the swirling turbulent chamber is provided, and an opening is provided at a tip end surface and / or a side wall surface of the hollow circular tube. 8. The bubble water producing apparatus according to claim 7, wherein the multiphase flow flowing from the inlet at the center of the partition plate flows out from the opening. 9. The bubble water producing apparatus according to claim 7, wherein a flow rate control means for controlling a flow rate of a multiphase flow flowing inside the flow path is provided in the flow path. 10. The apparatus according to claim 7, wherein the plurality of inflow lines in the cut line direction are arranged at positions different from each other in the axial direction from the partition plate. Bubble water production equipment.