Internal structure and fluid utilization device using the same

Abstract

To provide a fluid mixture output device which can sufficiently mix liquid as fine bubbles.SOLUTION: A fluid mixture output device consists of a storage body 110 and an internal structure 140 stored in the storage body. The internal structure includes a first part 143, a second part 145, a third part 147, a fourth part 149, a plurality of fluid supply ports 111-1, 111-2 for supplying first and second fluids, and a fluid outflow part 112, the first part including a spirally formed wing which makes the fluid generate a swirl flow, the second part including a plurality of projection parts, the third part including a spirally formed wing which makes the fluid generate a swirl flow, and the fourth part including a plurality of projection parts projecting out of the outer peripheral surface of the shank. The fluid support port 111-2 of the storage body is formed at a part matching the third part wing, and the second fluid is supplied into the third part and supplied into the fourth part while being mixed with the first fluid as a swirl flow.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a fluid mixing and output device that mixes and outputs a plurality of fluids, and a fluid utilizing device that uses the same. [Background technology]

[0002] In various technical fields, a fluid mixing output device that mixes and outputs multiple fluids is used. For example, there is a bifluid nozzle that improves the cleaning effect by mixing gas into a liquid and outputting it. Examples of such bifluid nozzles include Patent No. 3410385 and Patent No. 6207366. In these examples, gas and liquid are mixed and the mixed fluid is sprayed from a spray nozzle to clean semiconductor wafers and the like. In the field of machine tools, cooling water and air are mixed and sprayed for the purpose of cleaning and cooling workpieces and blades. Furthermore, gas is mixed into a liquid to generate fine bubbles, and liquid containing fine bubbles is used for cleaning, cooling, and other purposes. Examples of fluid characteristic change devices that generate ultra-fine bubbles in a fluid include Patent No. 6433039 and Patent No. 6534058 by the present patent applicant. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 3410385 [Patent Document 2] Patent No. 6207366 [Patent Document 3] Patent No. 6433039 [Patent Document 4] Patent No. 6534058 Summary of the Invention [Problem to be solved by the invention]

[0004] According to these conventional fluid mixing output devices, the devices for mixing multiple fluids are often large-scale, and it is difficult to mix multiple fluids appropriately, for example, homogeneously. Also, in the case of gas-liquid mixing, the particle size of the gas mixed with the liquid remains large, and the gas cannot be made finer.

[0005] The present invention has been made in view of the above circumstances. An object of the present invention is to provide a fluid mixing output device that can atomize and sufficiently mix fluids by utilizing the above-mentioned prior invention of the present patent applicant. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the present invention is configured as follows. That is, according to one embodiment of the fluid mixing output device of the present invention, the device comprises a storage body and an internal structure stored in the storage body. The storage body is provided with a plurality of fluid supply ports for supplying at least a first and a second fluid, and a fluid outlet port for outputting the plurality of fluids after mixing them at a downstream end. The internal structure includes a first portion, a second portion, a third portion, and a fourth portion. The first portion includes a shaft portion and a blade formed in a spiral shape so as to generate a vortex flow in the fluid. The second portion is located downstream of the first portion and includes a shaft portion and a plurality of protrusions protruding from the outer circumferential surface of the shaft portion. The third portion is located downstream of the second portion and includes a shaft portion and a blade formed in a spiral shape so as to generate a vortex flow in the fluid. The fourth portion is located downstream of the third portion and includes a shaft portion and a plurality of protrusions protruding from the outer circumferential surface of the shaft portion. One of the multiple fluid supply ports of the housing is formed in a portion corresponding to the wing of the third portion, and the second fluid is supplied to the third portion and supplied to the fourth portion as a swirling flow while being mixed with at least the first fluid.

[0007] According to another embodiment of the present invention, one of the multiple fluid supply ports of the container is formed in a portion corresponding to the wing of the first portion, and a first fluid is supplied and made into a swirling flow and then supplied to the second portion, and another of the multiple fluid supply ports is formed in a portion corresponding to the wing of the third portion, and a second fluid is supplied to the third portion and then made into a swirling flow while being mixed with the first fluid supplied from the second portion and then supplied to the fourth portion. According to yet another embodiment, one of the multiple fluid supply ports of the container is an opening at the upstream end of the container, and a first fluid is supplied to the first portion, another of the multiple fluid supply ports is formed in a portion corresponding to a wing of the first portion of the container, and a second fluid is supplied to the second portion while being mixed with the first fluid as a swirling flow, and another of the multiple fluid supply ports is formed in a portion corresponding to a wing of a third portion of the container, and a third fluid is supplied to the third portion and is further mixed with the mixture of the first fluid and the second fluid supplied from the second portion and supplied to the fourth portion as a swirling flow. According to yet another embodiment, one of the multiple fluid supply ports of the container is an opening at the upstream end of the container, and a first fluid is supplied to the second portion as a swirling flow, and another of the multiple fluid supply ports is formed in a portion of the container corresponding to the wing of a third portion, and a second fluid is supplied to the third portion and supplied to a fourth portion as a swirling flow while being mixed with the first fluid supplied from the second portion.

[0008] The fluid utilization device of the present invention, for example, supplies liquid to a first portion and gas to a third portion, and outputs the liquid mixed with the gas from the fluid outlet of the container, making it possible to utilize the liquid in a mixed gas-liquid state. Alternatively, the fluid utilization device of the present invention can, for example, supply gas to a first portion and liquid to a third portion, and output the gas mixed with the liquid from the fluid outlet of the container, making it possible to utilize the gas-liquid mixed state. Or even more fluids (liquids, gases, and mixtures thereof) can be used in a state where they are appropriately or homogeneously stirred, dispersed, sheared, mixed, and in some cases, converted into fine bubbles. Effect of the Invention

[0009] The fluid mixing output device of the present invention can mix a plurality of fluids appropriately. Specifically, the fluids can be mixed homogeneously. Furthermore, when mixing a gas into a liquid, a large amount of gas can be mixed into the liquid. Furthermore, the gas can be mixed into the liquid as fine bubbles (in some cases, fine bubbles including microbubbles and ultrafine bubbles) without generating large bubbles. Alternatively, the fluids can be mixed homogeneously. Furthermore, the fluid utilization device of the present invention can utilize a homogeneously mixed fluid from the fluid mixing output device, or a fluid containing fine-bubbled gas (in either or both of a microbubble state and an ultrafine bubble state). [Brief description of the drawings]

[0010] A better understanding of the invention can be obtained from the following detailed description when considered in conjunction with the following drawings, which are merely illustrative and are not intended to limit the scope of the invention. [Figure 1] FIG. 1 illustrates a utilization device that employs the fluid mixing output device of the present invention. [Diagram 2] FIG. 2 is a three-dimensional perspective view of a fluid supply pipe according to the first embodiment of the fluid mixing output device of the present invention. [Diagram 3] FIG. 3 is a three-dimensional exploded perspective view of the fluid supply tube of FIG. 2. [Figure 4] FIG. 3 is an exploded cross-sectional view of the fluid supply tube of FIG. 2. [Diagram 5] 3 is a cross-sectional view showing a state where a fluid supply joint is connected to the fluid supply pipe in FIG. 2. FIG. [Figure 6] FIG. 11 is a three-dimensional perspective view of a fluid supply pipe according to a second embodiment of the fluid mixing output device of the present invention. [Figure 7] FIG. 7 is a three-dimensional exploded perspective view of the fluid supply tube of FIG. [Figure 8] FIG. 7 is an exploded cross-sectional view of the fluid supply tube of FIG. 6. [Figure 9]7 is a cross-sectional view of the fluid supply joint when it is connected to the fluid supply pipe of FIG. 6. [Figure 10] FIG. 11 is a three-dimensional perspective view of a fluid supply pipe according to a third embodiment of the fluid mixing output device of the present invention. [Figure 11] FIG. 11 is a three-dimensional exploded perspective view of the fluid supply tube of FIG. [Figure 12] FIG. 11 is an exploded cross-sectional view of the fluid supply tube of FIG. [Figure 13] 11 is a cross-sectional view showing a state where a fluid supply joint is connected to the fluid supply pipe in FIG. 10. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, a fluid utilization device using the fluid mixing output device S of the present invention will be described. Reference numeral 1 denotes a tank (water tank) that stores a first fluid (for example, water) while being supplied from the outside. The fluid in this tank 1 is sucked up by a pump 2 and is provided to the fluid mixing output device S through a pipe. Reference numeral 21 denotes a tank (or a cylinder or the like) that stores a second fluid (for example, gas) while being supplied from the outside. The second fluid in this tank 21 is sucked up by a pump 22 and is provided to the fluid mixing output device S through a pipe. When the second fluid is air, the fluid mixing output device S only needs to take in outside air. In this way, two fluids (one is liquid and the other is gas) are supplied to the fluid mixing output device S. Of course, a third tank and a pump may be prepared to supply a third fluid (which may be liquid or gas) to the fluid mixing output device S so that three types are mixed. Alternatively, the fluid mixing output device S may mix more than two types of fluids. A plurality of fluids are appropriately mixed from the fluid mixing output device S and supplied to a target device 4 via a valve 3.

[0012] For example, if the first fluid from tank 1 is water and the second fluid from tank 2 is air, the fluid mixing and output device S directly generates ultra-fine bubbles (the inside of the bubbles is mainly water vaporized) while stirring, diffusing or shearing the sucked air to generate a large amount of microbubbles (some of which may become ultra-fine bubbles) that mainly contain air inside. The fluid mixing and output device S of the present invention can generate fine bubbles by boiling and vaporizing the fluid itself by reducing the pressure, or by reducing and precipitating gas dissolved in the fluid at room temperature. In this way, the fluid mixing and output device S can generate ultra-fine bubbles in addition to generating microbubbles, and the utilization device can utilize fluids containing fine bubbles of various sizes. The fluid mixing and output device S can also mix, stir, diffuse or shear two or more fluids (liquids, liquids and gases, gases, or gas-liquid mixtures).

[0013] A control device 7 controls the opening and closing of a valve 3 based on the output of a sensor 5 that detects the state (water temperature, etc.) of the first fluid in the tank 1 and a sensor 6 that detects the state (flow rate, pressure, etc.) of the fluid passing through the fluid mixing output device S, and the control state is displayed to an operator on a display panel 8. The fluid that has passed through the valve 3 is then supplied to the target device 4. Except when the supplied fluid is consumed by the target device 4, in the case of circulating the fluid, the fluid used in the target device 4 is returned to the tank 1 after foreign matter and impurities have been filtered out through a filter 9 (or a chiller in some cases) or the like (and the temperature is returned to its original value in some cases).

[0014] The fluid from the fluid mixing output device S of the present invention is used in various types of utilization devices. For example, the utilization device is a machine tool, and the fluid from the fluid mixing output device S is discharged from a nozzle onto a workpiece or a cutting tool such as a grindstone or a drill to cool or clean the workpiece. Alternatively, the utilization device can be a cleaning system for a factory production line (particularly precision equipment). In this way, the fluid supplied from the fluid mixing output device S functions as a coolant or cleaning agent in the target equipment 4. In other words, a liquid containing fine bubbles reduces the surface tension of the fluid and improves its permeability, so that the fluid penetrates to every detail, improving the cooling effect and cleaning ability. When the air pressure in the liquid falls below the saturated vapor pressure due to the cavitation phenomenon described below, bubbles are generated by water vapor if the liquid is water. These bubbles are made of negative pressure and naturally disappear at high pressure, and a large impact occurs at that time. This impact can be used for cleaning to improve the cleaning ability. Similarly, the utilization device can be a cleaning device for bottles, containers, and equipment. Furthermore, ozone is mixed into the water from tank 1 as the second fluid from tank 2, and the properties are changed to ozone fine bubble water by the fluid mixing output device S, and the ozone bubble water is discharged to the target product in the target device 4. In this way, deodorizing, decolorizing, and sterilizing effects can be obtained. Ozone is decomposed into oxygen molecules, and in the process, OH radicals and the like are generated, which improves the sterilizing performance. Therefore, the fluid supplied from the fluid mixing output device S can be used, for example, as a sterilizing agent.

[0015] Furthermore, the use device including the target device 4 includes a fluid system for washing, bathing, laundry, cleaning, etc. in the home, and a cleaning effect is expected. In this case, the tank 1 is not necessary, and it can be realized by directly passing tap water (first fluid) supplied from a water pipe through the fluid mixing output device S (the second fluid is air). Similarly, it can be applied to a fluid system that directly uses tap water in factories, offices, and stores. Alternatively, water as the first fluid is mixed with oxygen as the second fluid from the tank 2, and the characteristics are changed to oxygen fine bubble water by the fluid mixing output device S, and it can be applied to a fluid system for water treatment in the agricultural, fishery, or other fields. Liquids containing fine bubbles can be absorbed by living organisms such as plants and fish, and the growth rate can be accelerated. It is also used to wash food ingredients such as rice, agricultural products, and fresh fish. Furthermore, it can be applied to water treatment systems such as purification of groundwater, well water, and polluted water. Hydrogen, carbon dioxide, or other gases are mixed into the water as a second fluid from tank 2, and the fluid mixing output device S changes the properties of the water to hydrogen fine bubble water, carbon dioxide fine bubble water, fine bubble water with other properties, or various types of functional water, which can be used for various purposes.

[0016] Furthermore, the utilization device including the target device 4 can be applied to a fluid system that exchanges heat generated by various devices, and the fluid from the fluid mixing and output device S can be supplied to such a heat exchanger to realize cooling or heating. The fluid from the fluid mixing and output device S (containing fine bubbles and expected to have a temperature change effect) is passed through a pipe in the heat exchanger in the target device 4. In the target device 4, the fluid that has passed through the heat exchanger is returned to its original temperature by a chiller (not shown) and circulated and supplied to the tank 1. In this way, the fluid supplied to the target device 4 functions as a heat transfer agent that realizes cooling or heating of the target device.

[0017] In the case of a fluid system that consumes a specific fluid (does not circulate the fluid), the fluid is used by appropriately replenishing the fluid in the tank 1. Such target equipment is various manufacturing and production lines, and the fluid from the fluid mixing output device S can be used in the manufacture and production of various goods (food, medicine, emulsion fuel, etc.).

[0018] In another device, a mixed fluid of cement and water can be supplied as the first fluid and carbon dioxide as the second fluid to a fluid mixing output device S, and carbon dioxide can be mixed into the mixed water of cement and water, and in some cases, can be broken down into fine particles, particularly fine bubbles, to produce a cement fluid mixed with a larger amount of carbon dioxide. By using such cement to create a structure, it is also possible to reduce carbon dioxide in the atmosphere (by injecting and fixing carbon dioxide in concrete).

[0019] In this way, the gas supplied to the fluid mixing output device S is, for example, but not limited to, any one of air, oxygen, hydrogen, nitrogen, ozone, argon, helium, ammonia, carbon dioxide, chlorine, hydrogen chloride, hydrocarbon gas, and natural gas. The liquid supplied to the fluid mixing output device is, for example, but not limited to, any one of water, seawater, oil, alcohol, chemical liquid, and mixed fluid of cement and water.

[0020] In the present invention, the fluid mixing output device S includes a device that generates fine bubbles (microbubbles or ultrafine bubbles) in a fluid, or a device that changes the properties of a fluid by stirring, diffusing or shearing the fluid, and also includes a structure that is thought to bring about a change in the bond structure between molecules of the fluid. Furthermore, the fluid mixing output device S may be configured such that a plurality of such internal structures are arranged in series or in parallel.

[0021] (First embodiment) In the fluid supply pipe 1100 according to an embodiment of the fluid mixing output device S of the present invention, there are two systems of inlets which are fluid supply ports and one system of outlets which are fluid outlets so that two types of fluids can be mixed and output. FIG. 2 is a three-dimensional perspective view of the fluid supply pipe 1100 according to an embodiment of the fluid mixing output device S of the present invention, FIG. 3 is a three-dimensional exploded perspective view of the fluid supply pipe 1100, FIG. 4 is an exploded cross-sectional view of the fluid supply pipe 1100, and FIG. 5 is a cross-sectional view of the fluid supply pipe 1100 when the fluid supply joints 151-1 and 151-2 are joined on one side surface. FIG. 5(A) is a cross-sectional view seen from the side, and FIG. 5(B) is a cross-sectional view seen from the front of the output side.

[0022] As shown in these drawings, the fluid supply pipe 1100 includes a pipe body 110, an internal structure 140 disposed therein, and a lid body 113 screwed to the upstream portion. The pipe body 110 is a deformed pipe with a rectangular parallelepiped appearance, and has a cavity inside as shown in Figs. 4 and 5. That is, the internal cavity of the pipe body 110 is formed of an upstream cavity with a female thread (or male thread) that screws with the male thread (or female thread) of the lid body 113, a cylindrical cavity of a certain length and a large diameter that follows the upstream cavity, a concentric circular cavity that tapers to a narrower end, and a cylindrical cavity of a certain length and a small diameter at the final output end. The external shape of the pipe body 110 can be a rectangular parallelepiped, a cylindrical shape, a polygonal prism, or the like. This is similar to other embodiments.

[0023] The upstream end of the pipe body 110 is a circular opening on which a screw is formed, and the upstream end is closed by screwing with the screw formed on the lid 113. This is because the upstream end is opened in order to cut the cavity of the above shape, and the upstream end is sealed with the lid 113 during actual use. In addition to screwing with a screw, the lid 113 and the pipe body 110 can be connected by a method such as pressing or fitting the lid member, and if the fluid is sealed, a method such as gluing or welding the lid can also be used. This is the same in other embodiments of the present invention. The pipe body 110 is formed by a method of processing a prismatic member made of a metal such as steel, a method of molding plastic, etc. At the other downstream end, an outlet 112 is formed that leads to a cylindrical cavity with a small diameter. Inside the lid 113, a conical cavity 113-C is formed. The fluid supply pipe 1100 is configured by inserting and fixing the internal structure 140 into the pipe main body 110 from one end, and then closing the one end with the lid 113.

[0024] As shown in FIG. 2, in this embodiment, the fluid flows in from two inlets 111-1 and 111-2 provided on one side and flows toward the outlet 112. As shown in FIG. 5, a first fluid (e.g., liquid) is supplied to the first inlet 111-1 via a fluid supply joint 151-1, and a second fluid (e.g., gas) is supplied to the second inlet 111-2 via a fluid supply joint 151-2. Of course, it is also possible to reverse the manner in which the liquid and gas are supplied to the inlets 111-1 and 111-2 for the first and second fluids. In this embodiment, the diameters of the inlets 111-1 and 111-2 are approximately the same, and both are on the same line slightly shifted outward from the center of one side of the tube body 110 (see FIG. 2 and FIG. 5(B)). This is because the fluid is more likely to flow into the tube body 110 if it is slightly shifted from the center in the lateral direction with respect to the flow direction (in the example of FIG. 5(B), the fluid flows in while rotating counterclockwise overall). For example, as shown in FIG. 4 and FIG. 5, the inlet 111-1 of the fluid supply joint 151-1 for supplying liquid is a straight cylindrical shape, while the inlet 111-2 of the fluid supply joint 151-2 for gas is formed with a tapered shape 111-2T ​​that changes from a large diameter to a small diameter. Due to this shape, gas is injected from the inlet 111-2 with pressure applied to the internal cavity of the tube body 110. In the conical cavity 113-C formed inside the lid 113, a part of the first fluid flowing in from the inlet 111-1 accumulates, but it flows downstream due to the pressure of the fluid continuously injected from the fluid supply joint 151-1.

[0025] The internal structure 140 is formed, for example, by cutting or grinding a cylindrical member made of a metal such as steel, or by molding plastic. Specifically, as shown in Figs. 3 to 5, the internal structure 140 of this embodiment includes a first part, a bubble generating part 143, a second part, a bubble generating part 145, a third part, a bubble generating part 149, and a dome-shaped (or cone-shaped) guide part 150 located at the most downstream part, which are integrally formed on a common shaft member 141 having a circular cross section. A cone-shaped or dome-shaped diffusion part or the like may be added to the upstream end, although not shown. This is the same in other embodiments described later. In addition, a fifth part, a swirl generating part, a sixth part, a bubble generating part, and the like may be formed in series downstream of the fourth part.

[0026] The swirl generating section 143, the bubble generating section 145, the swirl generating section 147, the bubble generating section 149, and the guide section 150, or the diffusion section formed in the most upstream portion in addition to these, are each formed, for example, by processing a part of one cylindrical member. In this embodiment, the shaft member 141 has the swirl generating section 143 and the swirl generating section 147 with a small shaft diameter, and the bubble generating section 145 and the bubble generating section 149 with a large shaft diameter. The difference in shaft diameter is determined in consideration of the ease of flow of the fluid, but when the inflow (injection) pressure of the fluid into the pipe main body 110 is increased, the swirl generating section 143, the bubble generating section 145, the swirl generating section 147, and the bubble generating section 149 may have the same diameter. The shaft diameter of this shaft can be selected from large to small in other embodiments as well.

[0027] The swirl generating section 143 includes a shaft portion having a circular cross section and a constant diameter, and a plurality of, for example, three, spirally formed blades. As shown in Figs. 4 and 5, in this embodiment, the length of the swirl generating section 143 in the flow direction is shorter than the length of the bubble generating section 145. The tips of the blades of the swirl generating section 143 are shifted by 120° from each other in the circumferential direction of the shaft portion 141, and are formed in a counterclockwise spiral shape at a predetermined interval on the outer circumferential surface from one end of the shaft portion 141 to the other end. For example, if there are four blades, they are formed shifted by 90°. The number and shape of the blades of the swirl generating section 143 are not particularly limited as long as the fluid that has entered the swirl generating section 143 can generate a swirling flow while passing between the blades. The swirl generating section 143 has an outer diameter close to the inner circumferential surface of the cavity of the pipe main body 110 when the internal structure 140 is housed in the pipe main body 110. As shown enlarged in Figure 4, the wings of this vortex generating section 143 have a concentric recess 143-H at the position where fluid supply port 111-1 of storage body 110 is provided, which is recessed compared to other parts, and is formed so as not to hinder the injection of fluid.

[0028] The bubble generating section 145 is formed downstream of the swirl generating section 143. As shown in Figs. 4 and 5, the bubble generating section 145 includes a shaft section 141 having a circular cross section with a constant diameter, and a plurality of protrusions (convex sections) 145p protruding from the outer circumferential surface of the shaft section 141. A plurality of protrusions 145p, each of which is columnar and has a diamond-shaped cross section, are formed in a net-like pattern in the bubble generating section 145. Each of the protrusions 145p is formed by, for example, grinding the outer circumferential surface of a cylindrical member so that it protrudes radially outward from the surface of the shaft section 141. More specifically, the method of forming each of the protrusions 145p is, for example, to intersect a plurality of circular lines at regular intervals in a direction of 90 degrees with respect to the length direction of the cylindrical member with a spiral line at a regular interval inclined at a predetermined angle (for example, 60 degrees) with respect to the length direction, and grinding is performed by skipping between the circular lines in the 90 degree direction, and grinding is performed by skipping between the inclined spiral lines. In this way, a plurality of protrusions 145p protruding from the outer circumferential surface of the shaft portion 141 are regularly formed by skipping between them in the vertical direction (circumferential direction) and the horizontal direction (length direction of the shaft portion 141-3). The bottom surface of the groove formed by grinding becomes the outer circumferential surface of the shaft portion 141. In this embodiment, the bubble generating portion 145 has an outer diameter close to the inner circumferential surface of the cavity of the tube main body 110 when the internal structure 140 is stored in the tube main body 110. The shape of the multiple protrusions 145p does not have to be the diamond-shaped protrusions described above (e.g., triangles, polygons, etc.), and the arrangement (angle, width, etc.) can be changed as appropriate. This change is similar to the other embodiments described below. In addition, in the above explanation, it was explained that the protrusions 145p are manufactured by grinding, but by combining cutting and turning instead of grinding, it is possible to reduce time. This processing method is similar to the protrusions 149p described below, and is also similar to the other embodiments.

[0029] As shown in Figs. 4 and 5, the swirl generating section 147 is formed downstream of the bubble generating section 145. The swirl generating section 147 includes a shaft section 141 having a circular cross section and a constant diameter, and a plurality of, for example, three, spirally formed blades, similar to the swirl generating section 143. The length of the shaft section 141 of the swirl generating section 147 (length in the overall flow direction) is the same as the length of the shaft section 141 of the swirl generating section 143, but is not limited to this. The lengths of the swirl generating section 143 and the swirl generating section 147 can be adjusted according to the characteristics of the fluid used. The length of the shaft section 141 can be made longer or shorter than the length of the shaft section 141 of the swirl generating section 143, and this is the same in other embodiments.

[0030] In this embodiment, the swirl generating section 147 has an outer diameter close to the inner circumferential surface of the cavity of the tube main body 110 when the internal structure 140 is housed in the tube main body 110. As shown in an enlarged view in FIG. 4, the wings of the swirl generating section 147 have a recess 147-H that is recessed compared to other parts and is formed concentrically at the position where the fluid supply port 111-2 of the housing 110 is provided, so as not to hinder the injection of the fluid. In consideration of the shape of the fluid supply port 111-2, the width of the recessed part of the recess 147-H is formed shorter in the axial direction than the width of the recessed part of the recess 143-H, as shown in an enlarged view in FIG. 4, but they can also be made the same width.

[0031] The bubble generating section 149 is formed downstream of the swirl generating section 147. As with the bubble generating section 145, the bubble generating section 149 includes a shaft section 141 having a circular cross section with a constant diameter, and a plurality of protrusions 149p, for example, having a diamond-shaped cross section, protruding from the outer circumferential surface of the shaft section 141, and the plurality of protrusions 149p are formed in a net shape (see Figs. 4 and 5). Each of the protrusions 149p is formed by, for example, grinding the outer circumferential surface of a cylindrical member so as to protrude radially outward from the surface of the shaft section 141. The protrusions 149p can be formed by the same method as the protrusions 145p of the bubble generating section 145. In this embodiment, the bubble generating section 149 has an outer diameter close to the inner circumferential surface of the cavity of the pipe main body 110 when the internal structure 140 is housed in the pipe main body 110.

[0032] In this embodiment, the length of the shaft 141 of the bubble generator 149 is longer than the length of the shaft 141 of the bubble generator 145. In other words, the number of protrusions 149p of the bubble generator 149 is greater than the number of protrusions 145p of the bubble generator 145. However, the present invention is not limited to this embodiment. The entire length of the shaft 141 of the bubble generator 149 in the flow direction may be the same as the length of the shaft 141 of the bubble generator 145. However, in general, by making the entire length of the shaft 141 of the bubble generator 149 in the flow direction longer than the length of the shaft 141 of the bubble generator 145, the effect of mixing the fluids is improved.

[0033] The guide portion 150 is formed, for example, by processing the downstream end of a cylindrical member into a dome shape. As described below, the fluid flowing inside the fluid supply pipe 1100 is guided toward the center of the pipe by the guide portion 150, so that the fluid can be smoothly discharged through the outlet 112. In other embodiments, the internal structure 140 does not include a guide portion. Alternatively, it includes a cone-shaped guide portion.

[0034] Next, the flow of the fluid while passing through the fluid supply pipe 1100 will be described. A first fluid (for example, liquid) is supplied to the inlet 111-1 through the fluid supply joint 151-1, and a second fluid (for example, gas) is supplied to the inlet 111-2 through the fluid supply joint 151-2. The first fluid flowing in through the inlet 111-1 passes between the three spirally formed wings of the vortex generating part 143 while partly collecting in the conical cavity 113-C formed inside the lid 113. At this time, the wings of the vortex generating part 143 have the recessed part 143-H formed concentrically, and do not hinder the injection of the first fluid from the inlet 111-1. The fluid becomes a strong vortex flow by each wing of the first vortex generating part 143, passes through the shaft part 141, and is sent to the bubble generating part 145.

[0035] The fluid then passes between the multiple protrusions 145p of the bubble generator 145. These multiple protrusions 145p form multiple narrow flow paths (intersecting flow paths of a spiral flow path and an annular flow path). When the fluid passes through the multiple narrow flow paths formed by the multiple protrusions 145p, a large number of tiny vortexes are generated. In other words, the phenomenon of repeated collision and branching of the spiral flow path, where the flow is fast, and the annular flow path, where the flow is slow, induces mixing and diffusion of the fluid. The above structure of the first bubble generator 145 is also useful when mixing two or more fluids with different properties.

[0036] The internal structure 140 has a structure that allows the fluid to flow from the upstream side (vortex generating section 143) with a large cross-sectional area to the downstream side (flow path formed between multiple protrusions 145p of the bubble generating section 145) with a small cross-sectional area. This structure changes the static pressure of the fluid as described below. The relationship between pressure, velocity, and potential energy in a state where no external energy is applied to the fluid is expressed as the following Bernoulli equation.

number

[0037] When the fluid is a liquid, the liquid begins to evaporate when the reduced static pressure reaches the saturated vapor pressure of the liquid. This phenomenon in which the static pressure drops below the saturated vapor pressure in a very short time at approximately the same temperature (3000-4000 Pa for water) and the liquid evaporates suddenly is called cavitation. The internal structure of the fluid supply pipe 1100 of the present invention induces this cavitation phenomenon. Due to the cavitation phenomenon, a large number of small bubbles are generated by the liquid boiling or the liberation of dissolved gas, using tiny bubble nuclei of 100 microns or less that exist in the liquid as nuclei. That is, a large number of fine bubbles are generated as the fluid passes through the bubble generating unit 145.

[0038] In the case of water, one water molecule can form hydrogen bonds with four other water molecules, and it is not easy to destroy this hydrogen bond network. Therefore, water has a very high boiling point and melting point and a high viscosity compared to other liquids that do not form hydrogen bonds. The high boiling point of water provides an excellent cooling effect, so it is often used as cooling water for processing equipment that performs grinding, etc., but there is a problem that the size of the water molecules is large and the permeability and lubricity to the processing area are poor. Therefore, in many cases, special lubricating oils other than water (i.e., cutting oils) are used alone or mixed with water. However, if the supply pipe of the present invention is used, the water is vaporized by the above-mentioned cavitation phenomenon, and as a result, the hydrogen bond network of water is destroyed and the viscosity is reduced. In addition, the fine bubbles generated by the vaporization reduce the surface tension of the water, improving the permeability and lubricity. The improvement in permeability ultimately increases the cooling efficiency. Therefore, according to the present invention, the processing quality, i.e., the performance of the machine tool, can be improved even if only water is used without using a special lubricating oil.

[0039] The fluid that has passed through the bubble generating section 145 passes through the shaft section 141 and passes between the three spirally formed blades of the swirl generating section 147. At this time, the second fluid (gas) that flows in from the fluid supply joint 151-2 through the inlet 111-2 is injected between the three spirally formed blades of the swirl generating section 147. At this time, the blades of the swirl generating section 147 have recesses 147-H formed therein, and do not impede the injection of the second fluid supplied through the fluid supply joint 151-2. Here, the second fluid is mixed with the first fluid from upstream, and the mixed fluid consisting of the first and second fluids is turned into a strong swirl flow by the blades of the second swirl generating section 147 and is sent to the bubble generating section 149 after passing through the shaft section 141.

[0040] As explained for bubble generating unit 145, in bubble generating unit 149, the phenomenon of generating many tiny vortexes occurs as the fluid passes through the multiple narrow flow paths formed by the multiple protrusions 149p. When the second fluid is a gas, the gas particle size is reduced by passing through these narrow flow paths. Also, the cavitation phenomenon occurs due to the structure in which the fluid flows from a flow path with a large cross-sectional area (a flow path formed by the three blades of vortex generating unit 147) to a flow path with a small cross-sectional area (a flow path formed between the multiple diamond-shaped protrusions 149p of bubble generating unit 149). As a result, many fine bubbles are generated as the fluid passes through bubble generating unit 149.

[0041] As described above, the fluid supply pipe 1100 of this embodiment is configured such that the first fluid that has passed through the swirl generating section 143 and the bubble generating section 145 is mixed with the second fluid injected from the inlet 111-2 via the fluid supply joint 151-2, becomes a spiral flow by the spirally formed blades of the swirl generating section 147, and passes through a narrow intersecting flow path between the multiple protrusions 149p of the bubble generating section 149. The swirl generating section 147 provided upstream of the bubble generating section 149 generates a swirl flow and supplies it to the second bubble generating section 149, thereby increasing the effect of fine bubble generation in the first fluid compared to the case where one bubble generating section 145 is provided. In addition, the second fluid is also finely divided and mixed with the first fluid, increasing the possibility (frequency) of the mixed fluid also being finely divided into bubbles.

[0042] The fluid that has passed through the bubble generating unit 149 flows toward the end of the internal structure 140. The flow paths are suddenly widened from the multiple narrow flow paths of the bubble generating unit 149 to the space between the induction unit 150 and the tapered portion inside the tube main body 110. At this time, the Coanda effect occurs due to the conical curved surface of the induction unit 150 of the internal structure 140. The Coanda effect refers to a phenomenon in which, when a fluid flows around a curved surface, the fluid is attracted to the curved surface due to a pressure drop between the fluid and the curved surface, causing the fluid to flow along the curved surface. Due to this Coanda effect, the fluid is induced to flow along the surface of the induction unit 150. The fluid is induced toward the center of the tube by the induction unit 150 of the internal structure 140 and flows out through the outlet 112.

[0043] In the above first embodiment, one of the multiple fluid supply ports of the tube main body 110, which is the storage body, is formed in a portion (inlet 111-1) corresponding to the wing of the vortex generating section 143, which is the first part of the internal structure 140, and a first fluid is supplied and made into a vortex flow and supplied to the bubble generating section 145, which is the second part, and another of the multiple fluid supply ports is formed in a portion (inlet 111-2) corresponding to the wing of the vortex generating section 147, which is the third part, and a second fluid is supplied to the third part and supplied to the bubble generating section 149, which is the fourth part, while being mixed with the first fluid supplied from the second part, as a vortex flow.

[0044] Here, the swirl flow generating section 143 and the swirl flow generating section 147 of the internal structure 140 are configured to generate a counterclockwise swirl flow (swirl flow), but they may both be configured to generate a clockwise swirl flow (swirl flow). In addition, the spiral flow paths of the bubble generating section 145 and the bubble generating section 149 may be clockwise accordingly. Also, the inlets 111-1 and 111-2 shown in FIG. 5(B) are shifted from the center of the drawing to the left side (right side from the overall flow direction) so that the fluid tends to rotate clockwise. This also applies to the other embodiments described below.

[0045] Second embodiment Next, a second embodiment of the fluid mixing output device S according to the present invention will be described. In the fluid supply pipe 2100 of this embodiment, there are three systems of inflow / outflow ports, which are fluid supply ports, and one system of outflow / outflow ports, which are fluid outflow ports, so that three or more types of fluids can be mixed and output. In addition, one input system can be divided into three directions to allow fluid to flow in. Therefore, the same type of fluid may be supplied to the input of two systems. In addition, a different fluid can be supplied to each direction to the inlet of one system divided into three directions. In addition, the number of inlets in three directions can be increased to four directions, or reduced to one or two directions. In particular, when injecting gas, it is efficient to inject it in a dispersed manner from multiple inlets, because it is possible to mix the required amount into the liquid without applying high pressure, and to mix the gas homogeneously without forming large bubbles.

[0046] FIG. 6 is a three-dimensional perspective view of the fluid supply pipe 2100, FIG. 7 is a three-dimensional exploded perspective view of the fluid supply pipe 2100, FIG. 8 is an exploded cross-sectional view of the fluid supply pipe 2100, and FIG. 9 is a cross-sectional view of the fluid supply pipe 2100 when the fluid supply joint 251-1 is connected from one direction and the fluid supply joints 251-2a to 251-2c are connected from three directions. That is, FIG. 9(A) is a cross-sectional view seen from the side, FIG. 9(B) is a cross-sectional view at the position of I, and FIG. 9(C) is a cross-sectional view at the position of II. As shown in these drawings, the fluid supply pipe 2100 is a deformed pipe with a rectangular parallelepiped appearance, and has a pipe main body 210 having a cavity with a substantially cylindrical shape inside as shown in FIG. 8 and FIG. 9, an input side coupler 213, and an output side coupler 212. An internal structure 240 can be arranged and fixed in the internal cavity of the pipe main body 210.

[0047] The pipe body 210 is formed by processing a rectangular columnar member made of a metal such as steel or molding plastic. The upstream end of the pipe body 210 is, for example, a circular opening having a female thread (or male thread) formed therein, which is screwed and coupled to a male thread (or female thread) formed in the input side coupling body 213. The downstream end of the pipe body 210 is formed with a female thread, which is screwed and coupled to a male thread of the output side coupling body 212 in which an outlet is formed. The input side coupling body 213 is formed with an inlet 213-I and a substantially cylindrical cavity 213-C. The output side coupling body 212 is formed with an outlet 212-O whose diameter is narrowed by a taper. The fluid supply pipe 2100 is assembled by inserting and fixing the internal structure 240 into the pipe body 210 from one end, attaching the input side coupling body 213 to one upstream end, and attaching the output side coupling body 212 to the other downstream end. The tube body 210 can be connected to the input side coupler 213 and the output side coupler 212 by screwing, fitting or other joining methods.

[0048] 9, a first fluid (e.g., liquid) flows in from an opening 213-I (first system) of the input side coupler 213, a second fluid (e.g., liquid) flows in from an inlet 211-1 (second system) provided on one side surface from the fluid supply joint 251-1, and a third fluid (e.g., gas) flows in from inlets 211-2a to 211-2c (third system) provided on three sides from the fluid supply joints 251-2a to 251-2c, and then flows toward the output side coupler 212 where an outlet is provided. The fluid supply ports 211-2a to 211-2c of the third fluid are provided at corresponding positions on a concentric circle of the vortex generating section 247 of the third portion of the shaft of the internal structure 240.

[0049] The diameters of the inlets 211-2a to 211-2c formed on the three side surfaces are slightly smaller than the diameter of the inlet 211-1. This is because, when the fluid is gas, the inlet diameter is made smaller and pressure is applied to inject the gas, so that large bubbles do not form in the gas. As in the first embodiment, in order to facilitate inflow, the inlets 211-1 and 211-2a to 211-2c are on the same line slightly shifted outward from the center of each side surface of the tube body 210, as shown in Figures 6, 7, and 9(C). The inlets 211-2a to 211-2c of the fluid supply joint 251-2 for gas have a tapered shape 211-2T ​​that narrows at the bottom and injects gas under pressure, and the injection port at the end is narrowed.

[0050] The internal structure 240 has the same configuration as that described in the first embodiment, and includes a swirl generating section 243 as a first part, a bubble generating section 245 as a second part, a swirl generating section 247 as a third part, a bubble generating section 249 as a fourth part, and a dome-shaped (or cone-shaped) guide section 250 located at the most downstream side, which are integrally formed on a common shaft member 241 having a circular cross section, as shown in Fig. 7 to Fig. 9. Note that a cone-shaped or dome-shaped diffusion section that diffuses the fluid from the center to the periphery may be added to the upstream end of the internal structure 240.

[0051] Each of swirl generating section 243, bubble generating section 245, swirl generating section 247, bubble generating section 249, and guide section 250, or the diffusion section at the tip, is formed, for example, by machining a part of one cylindrical member. In this embodiment, similar to the first embodiment, shaft member 241 has swirl generating section 243 and swirl generating section 247 with a thin shaft diameter, and bubble generating section 245 and bubble generating section 249 with a thick shaft diameter. In other embodiments, swirl generating section 243, bubble generating section 245, swirl generating section 247, and bubble generating section 249 have the same diameter.

[0052] The swirl generating part 243 includes a shaft part having a circular cross section and a constant diameter, and a plurality of blades. The blades of the swirl generating part 243 have a shape as shown in an enlarged view in Fig. 8. That is, at the position where the fluid supply port 211-1 of the pipe main body 210 is provided, a recess 243-H which is recessed compared to other parts is formed concentrically, and is formed so as not to impede the injection of the fluid.

[0053] The bubble generating section 245 is formed downstream of the swirl generating section 243. The bubble generating section 245 includes a shaft section 241 having a circular cross section with a constant diameter, and a plurality of protrusions (convex sections) 245p protruding from the outer circumferential surface of the shaft section 241. A plurality of protrusions 245p, each of which is columnar and has a diamond-shaped cross section, are formed in a net shape in the bubble generating section 245. The structure, function, and formation method are similar to those in the first embodiment, so a description thereof will be omitted.

[0054] As shown in Figs. 8 and 9, the swirl generating section 247 is formed downstream of the bubble generating section 145. The swirl generating section 247 includes a shaft section 241 having a circular cross section with a constant diameter, and a plurality of blades, similar to the swirl generating section 243. The length of the entire flow direction of the shaft section 241 of the swirl generating section 247 is shorter than the length of the shaft section of the swirl generating section 243. This is the case where the length of the liquid (supplied to the swirl generating section 243) and the length of the gas (supplied to the swirl generating section 247) are different, but this is not limited to the case where the lengths of the flow direction are the same. The blades of the swirl generating section 247 are as shown in an enlarged view in Fig. 8. That is, at the position where the fluid supply ports 211-2a to 211-2c of the storage body 210 are provided, a recess 247-H that is recessed compared to other parts is formed concentrically, so as not to hinder the injection of the fluid.

[0055] The bubble generating section 249 is formed downstream of the swirl generating section 247. Like the bubble generating section 245, the bubble generating section 249 includes a shaft section 241 having a circular cross section with a constant diameter, and a plurality of diamond-shaped protrusions 249p protruding from the outer circumferential surface of the shaft section 241, and the plurality of diamond-shaped protrusions 249p are formed in a net-like pattern. The shape, function, etc. are also similar to those of the first embodiment, so detailed description will be omitted.

[0056] The guide portion 250 is formed, for example, by processing the downstream end of a cylindrical member into a dome shape or a cone shape. The fluid flowing inside the fluid supply pipe 2100 is guided toward the center of the pipe by the guide portion 250, so that the fluid can be smoothly discharged through the outlet 212-O of the output side coupling body 212.

[0057] The flow of the fluid while passing through the fluid supply pipe 2100 will be described. The first fluid (e.g., liquid) is supplied from the opening 213-I (first system) of the input side coupling body 213, passes through the cavity 213-C, and is made into a swirling flow in the vortex generating section 243. At this time, the second fluid (e.g., liquid) from the fluid supply joint 251-1 is supplied from the inlet 211-1 (second system) provided on one side, and the first and second fluids are mixed while being swirled and supplied to the bubble generating section 245. In the bubble generating section 245, a phenomenon occurs in which a large number of minute vortexes are generated in the mixed flow of the first and second fluids. The cavitation phenomenon occurs due to the structure in which the fluid flows from a flow path with a large cross-sectional area (a flow path formed by the blades of the vortex generating section 243) to a flow path with a small cross-sectional area (a cross flow path formed between the multiple diamond-shaped protrusions 245p of the bubble generating section 245). As a result, a large number of fine bubbles are generated as the fluid passes through the bubble generating section 245.

[0058] The fluid that has passed through the bubble generating section 245 passes between the blades formed in a spiral shape of the swirl generating section 247. At this time, the third fluid (e.g., gas) that flows in from the fluid supply joints 251-2a to 251-2c through the inlets 211-2a to 211-2c is injected between the blades formed in a spiral shape of the swirl generating section 247. At this time, the blades of the swirl generating section 247 have recesses 247-H formed therein, and do not impede the injection of the third fluid supplied through the fluid supply joints 251-2a to 251-2c. Here, while the third fluid is mixed with the mixed fluid of the first and second fluids coming from upstream, the mixed fluid consisting of the first to third fluids is turned into a strong swirl flow by each blade of the swirl generating section 247 and is sent to the bubble generating section 249. As shown in FIG. 9C, the supply directions of the fluid from the fluid supply joints 251-2a to 251-2c are also rotated at angles perpendicular to the direction of accelerating the counterclockwise direction of the fluid.

[0059] In the bubble generating section 249, as described for the bubble generating section 245, a phenomenon occurs in which a large number of minute vortexes are generated by the fluid passing through a plurality of narrow flow paths formed by the plurality of protrusions 249p. When the third fluid is a gas, the gas particle size is reduced by passing through this narrow flow path. Also, a cavitation phenomenon occurs due to the structure in which the fluid flows from a flow path with a large cross-sectional area (a flow path formed by the three blades of the vortex generating section 247) to a flow path with a small cross-sectional area (a cross flow path formed between the plurality of diamond-shaped protrusions 249p of the bubble generating section 249). As a result, a large number of fine bubbles are generated as the fluid passes through the bubble generating section 249.

[0060] As described above, according to the second embodiment, one of the multiple fluid supply ports of the fluid supply pipe 2100, which is a container, is the opening (213-I) at the upstream end of the input side coupling body 213, and a first fluid is supplied to the swirl generating section 213, which is the first part, and the other of the multiple fluid supply ports is formed in a portion (211-1) corresponding to the blades of the swirl generating section 243 of the first part of the pipe main body 210, which is a container, and a second fluid is supplied and mixed with the first fluid to form a swirl flow. The third fluid is supplied to the bubble generating section 245, which is the second section, and another of the multiple fluid supply ports is formed in a section (211-2a to 211-2c) corresponding to the blades of the swirl generating section 245, which is the third section of the tube main body 210, which is the container, and the third fluid is supplied to the swirl generating section 247, which is the third section, and is supplied to the bubble generating section 249, which is the fourth section, as a swirling flow while being further mixed with the mixed fluid of the first fluid and the second fluid supplied from the second section. By generating a swirling flow by the swirl generating section 247 provided upstream of the bubble generating section 249 and supplying it to the second bubble generating section 249, it is possible to increase the effect of fine bubble generation in the mixed fluid of the first and second fluids compared to the case where only one bubble generating section 245 is provided. In addition, the third fluid is also finely divided and mixed with the mixed fluid consisting of the first and second fluids, and the possibility that the mixed fluid of the first to third fluids will also be finely divided into bubbles is increased.

[0061] Third embodiment A third embodiment of the fluid mixing output device S according to the present invention will be described. The fluid supply pipe 3100 of this embodiment has two inlets and one outlet so that two or more types of fluids can be mixed and output. In addition, one input system can be divided into four directions and fluids can flow in. A separate fluid can be supplied to each direction to the inlet of one system divided into four directions. In addition, the number of inlets for four directions can be increased to more than four directions, or reduced to one to three directions. As in the second embodiment, when injecting gas, injecting it in a dispersed manner from multiple inlets is efficient because it is possible to mix the required amount into the liquid without applying high pressure and to mix the gas homogeneously without forming large bubbles.

[0062] FIG. 10 is a three-dimensional perspective view of the fluid supply pipe 3100, FIG. 11 is a three-dimensional exploded perspective view of the fluid supply pipe 3100, FIG. 12 is an exploded cross-sectional view of the fluid supply pipe 3100, and FIG. 13 is a cross-sectional view of the fluid supply pipe 3100 when the fluid supply joints 351-a to 351-d are connected from four directions. That is, FIG. 13(A) is a cross-sectional view seen from the side, FIG. 13(B) is a cross-sectional view at the position of I, and FIG. 13(C) is a cross-sectional view at the position of II. As shown in these drawings, the fluid supply pipe 3100 is a cylindrical pipe, and is composed of a pipe main body 310 having a substantially cylindrical hollow interior shown in FIG. 12 and FIG. 13, an input side coupler 313, and an output side coupler 312. An internal structure 340 is stored and fixed inside the pipe main body 310.

[0063] The pipe body 310 is formed by processing a rectangular columnar member made of a metal such as steel or molding plastic. The upstream end of the pipe body 310 is a circular opening having a male thread (or female thread), for example, which is screwed to a female thread (or male thread) formed on the input side coupler 313. The downstream end of the pipe body 310 is formed with a male thread (or female thread), which is screwed to a female thread (or female thread) of the output side coupler 312. The input side coupler 313 is formed with an inlet 313-I and a substantially cylindrical cavity 313-C, and the output side coupler 312 is formed with an outlet 312-O. The fluid supply pipe 3100 is assembled by inserting and fixing the internal structure 340 into the pipe body 310 from one end, attaching the input side coupler 313 to one end on the inlet side, and attaching the output side coupler 312 to the other end on the outlet side. When the fluid supply pipe 3100 is assembled, a swirl generating section 343 which is a first part of the internal structure 340 described later is located at the position of the cavity 313-C of the input side coupling body 313, and a guide section 350 of the internal structure 340 is located in the internal cavity of the output side structure 312. The method of coupling the pipe main body 340 to the input side coupling body 313 and the output side coupling body 312 can be variously changed, such as by screwing or fitting, as in the first and second embodiments.

[0064] In FIG. 13, a first fluid (e.g., liquid) flows in through opening 313-I of input side coupling body 313, and a second fluid (e.g., gas) flows through fluid supply joints 351-a to 351-d and through inlets 311-2a to 311-2d provided on the four sides, and then flows toward output side coupling body 312 where outlet 312-O is located.

[0065] 11 to 13, the internal structure 340 has the same configuration as those described in the first and second embodiments, and includes a swirl generating section 343 as a first section, a bubble generating section 345 as a second section, a swirl generating section 347 as a third section, a bubble generating section 349 as a fourth section, and a dome-shaped (or cone-shaped) guide section 350 located at the most downstream side, which are integrally formed on a common shaft member 341 having a circular cross section. A cone-shaped or dome-shaped diffusion section may be added to the upstream end.

[0066] Each of swirl generating section 343, bubble generating section 345, swirl generating section 347, bubble generating section 349, and guide section 350 or diffusion section is formed, for example, by machining a part of one cylindrical member. In this embodiment, similar to the first and second embodiments, shaft member 341 has swirl generating section 343 and swirl generating section 347 with a small shaft diameter, and bubble generating section 345 and bubble generating section 349 with a large shaft diameter. In other embodiments, swirl generating section 343, bubble generating section 345, swirl generating section 347, and bubble generating section 349 have shaft members with the same diameter.

[0067] The swirl generating section 343 includes a shaft portion having a circular cross section and a constant diameter, and a plurality of blades. The bubble generating section 345 is formed downstream of the swirl generating section 343. The bubble generating section 345 includes a shaft portion 341 having a circular cross section and a constant diameter, and a plurality of protrusions (convex portions) 345p protruding from the outer circumferential surface of the shaft portion 341. The bubble generating section 345 is formed with a network of a plurality of protrusions 345p, each of which is columnar and has a diamond-shaped cross section. The structure, function, and formation method are similar to those of the first and second embodiments, and therefore description thereof will be omitted.

[0068] As shown in Figs. 12 and 13, the swirl generating section 347 is formed downstream of the bubble generating section 345. The swirl generating section 347 includes a shaft section 341 having a circular cross section with a constant diameter, and a plurality of blades, similar to the swirl generating section 343. The length (overall length in the flow direction) of the shaft section 341 of the swirl generating section 347 is shorter than the length of the shaft section of the swirl generating section 343. This is the case where the liquid (supplied to the swirl generating section 343 from the opening 313-I of the input side coupling body 313) and the gas (supplied to the swirl generating section 347 via the fluid supply joints 351-a to 351-d) are different in length (the gas is shorter than the liquid), but this is not limited to the case where the lengths in the flow direction are the same. As shown enlarged in FIG. 12, the wings of this swirl generating section 347 have concentric recesses 347-H at the positions where fluid supply ports 311-2a to 311-2d of storage body 310 are provided that are recessed compared to other parts, and are formed so as not to impede the injection of fluid.

[0069] The bubble generating section 349 is formed downstream of the swirl generating section 347. Like the bubble generating section 345, the bubble generating section 349 includes a shaft section 341 having a circular cross section with a constant diameter, and a plurality of protrusions 349p protruding from the outer circumferential surface of the shaft section 341, and the plurality of protrusions 349p are formed in a net-like pattern. The shape, function, etc. are also similar to those of the first and second embodiments, so detailed description will be omitted.

[0070] The guide portion 350 is formed, for example, by processing the downstream end of a cylindrical member into a dome shape or a cone shape. The fluid flowing inside the fluid supply pipe 3100 is guided toward the center of the pipe by the guide portion 350, so that the fluid can be smoothly discharged through the outlet 312-O of the output side coupling body 312.

[0071] The flow of the fluid while passing through the fluid supply pipe 3100 will be described. The first fluid (for example, liquid) is supplied from the opening 313-I (first system) of the input side coupling body 313, and is made into a swirling flow in the swirl generating section 343 and is supplied to the bubble generating section 345. In the bubble generating section 345, a phenomenon occurs in which a large number of minute vortexes are generated for the first fluid. The cavitation phenomenon occurs due to the structure in which the fluid flows from a flow path with a large cross-sectional area (a flow path formed by the blades of the swirl generating section 343) to a flow path with a small cross-sectional area (a cross flow path formed between the multiple protrusions 345p of the bubble generating section 345). As a result, a large number of fine bubbles are generated as the fluid passes through the bubble generating section 345.

[0072] The fluid that has passed through the bubble generating section 345 passes between the blades formed in a spiral shape of the swirl generating section 347. At this time, the second fluid (e.g., gas) that has flowed in through the inlets 311-2a to 311-2d is injected between the blades formed in a spiral shape of the swirl generating section 347. At this time, the blades of the swirl generating section 347 have recesses 347-H formed therein, and do not impede the injection of the second fluid that is supplied through the fluid supply joints 351-a to 351-d. Here, the first fluid and the second fluid coming from the upstream are mixed, and the mixed fluid consisting of the first and second fluids is turned into a strong swirl flow by each blade of the swirl generating section 347 and is sent to the bubble generating section 349. As shown in FIG. 13(B), the supply direction of the fluid from the fluid supply joints 351-a to 351-d is also rotated at an angle perpendicular to the direction that accelerates the counterclockwise direction of the fluid.

[0073] In the bubble generating section 349, as described for the bubble generating section 345, a phenomenon occurs in which a large number of minute vortexes are generated by the fluid passing through a plurality of narrow flow paths formed by a plurality of protrusions 349p. When the second fluid is a gas, the gas particle size is reduced by passing through these narrow flow paths. In addition, a cavitation phenomenon occurs due to the structure in which the fluid flows from a flow path with a large cross-sectional area (a flow path formed by the three blades of the vortex generating section 347) to a flow path with a small cross-sectional area (a cross flow path formed between the plurality of diamond-shaped protrusions 349p of the bubble generating section 349). As a result, a large number of fine bubbles are generated as the fluid passes through the bubble generating section 349.

[0074] As described above, according to the third embodiment, one of the plurality of fluid supply ports of the container is an opening (313-I) at the upstream end of the fluid supply pipe 3100, which is the container, and the first fluid is supplied as a swirling flow to the bubble generating section 345, which is the second section, and the other of the plurality of fluid supply ports is formed in a section (311-2a to 311-2d) corresponding to the blades of the swirling section 347, which is the third section of the pipe body 340, which is the container, and the second fluid is supplied to the third section and is mixed with the first fluid supplied from the second section to the bubble generating section 349, which is the fourth section, and is supplied as a swirling flow. The swirling flow is generated by the swirling section 347 provided upstream of the bubble generating section 349 and supplied to the second bubble generating section 349, so that the effect of fine bubble generation in the first fluid can be increased compared to the case where only one bubble generating section 345 is provided. In addition, the second fluid is also micronized, and the possibility (frequency) of the first and second mixed fluids being turned into fine bubbles increases.

[0075] Although the present invention has been described above using a number of embodiments, the present invention is not limited to these exemplary embodiments. Those skilled in the art to which the present invention pertains may derive many modifications and other embodiments of the present invention from the above description and the associated drawings. Although a number of specific terms are used in this specification, these are used in a general sense only for the purpose of description and are not used to limit the invention. Various modifications are possible within the scope of the general concept and idea of ​​the invention as defined by the appended claims and their equivalents. [Explanation of symbols]

[0076] S Fluid mixing output device 4. Target devices 1100, 2100, 3100 Fluid supply pipe 111-1, 111-2, 211-1, 211-2a~211-2c, 311-2a~311-2d Inlet 140, 240, 340 internal structure 143, 147, 243, 247, 343, 347 Swirl flow generator 143-H, 147-H, 243-H, 247-H, 347-H recess 145, 149, 245, 249, 345, 349 Bubble generating section 151-1, 151-2, 251-1, 251-2a~251-2c, 351-a~351-d Fluid supply joint 213-I, 313-I opening

Claims

1. An internal structure housed in a housing, which is provided with a plurality of fluid supply ports for supplying at least a first and a second fluid, and a fluid outlet at the downstream end for outputting a mixture of the plurality of fluids, The internal structure includes a first part, a second part, a third part, and a fourth part. The first part includes a shaft and a blade that is spirally formed to generate a vortex flow in the fluid. The second part is located downstream of the first part and includes a shaft and a plurality of protrusions projecting from the outer surface of the shaft. The third part is located downstream of the second part and includes a shaft and a blade that is spirally formed to generate a vortex flow in the fluid. The fourth part is located downstream of the third part and includes a shaft and a plurality of protrusions projecting from the outer surface of the shaft. One of the multiple fluid supply ports of the housing is formed in the part corresponding to the wing of the first part, and the first fluid is supplied to the first part and then supplied to the second part as a vortex flow. One of the multiple fluid supply ports of the housing is formed in a portion corresponding to the wing of the third portion, and the second fluid is supplied to the third portion and supplied to the fourth portion as a vortex flow, mixed with at least the first fluid. Internal structure.

2. The internal structure according to claim 1, characterized in that one or more fluid supply ports for the second fluid of the housing, formed in the portion corresponding to the wing of the third portion, are provided at corresponding positions on the concentric circle of the third portion of the shaft of the internal structure.

3. The internal structure according to claim 1, characterized in that the third wing portion is formed such that the location where the fluid supply port of the storage body is provided is concentrically recessed compared to the other portions, so as not to obstruct the injection of the second fluid.

4. The internal structure according to claim 1, characterized in that the wing of the first part is formed such that the position where the fluid supply port of the housing is provided is concentrically recessed compared to the other parts, so as not to obstruct the injection of the first fluid.

5. The internal structure according to claim 1, characterized in that the internal structure includes a first portion, a second portion, a third portion, and a fourth portion, which are integrally formed on a common axial member having a circular cross-section.

6. The first and third parts of the internal structure include multiple wings. The internal structure according to claim 1, characterized in that the tips of each wing are offset from each other by a predetermined angle in the circumferential direction of the shaft.

7. The internal structure according to claim 1, characterized in that the multiple protrusions of the second and fourth parts of the internal structure are formed in a mesh-like manner, and each protrusion is columnar in shape.

8. The internal structure according to claim 1, further comprising a guide section at the downstream end for guiding the mixed fluid toward the center of the flow.

9. The internal structure according to claim 5, characterized in that the diameter of the shaft portion of the first part of the internal structure is smaller than the diameter of the shaft portion of the second part.

10. The internal structure according to claim 5, characterized in that the diameter of the shaft portion of the third part of the internal structure is smaller than the diameter of the shaft portion of the fourth part.

11. The internal structure according to claim 1, characterized in that the number of protrusions in the second part of the internal structure is less than the number of protrusions in the fourth part.

12. An internal structure housed in a housing, which is provided with a plurality of fluid supply ports for supplying at least a first and a second fluid, and a fluid outlet at the downstream end for outputting after mixing the plurality of fluids, The internal structure includes a first part, a second part, a third part, and a fourth part. The first part includes a shaft and a blade that is spirally formed to generate a vortex flow in the fluid. The second part is located downstream of the first part and includes a shaft and a plurality of protrusions projecting from the outer surface of the shaft. The third part is located downstream of the second part and includes a shaft and a blade that is spirally formed to generate a vortex flow in the fluid. The fourth part is located downstream of the third part and includes a shaft and a plurality of protrusions projecting from the outer surface of the shaft. One of the multiple fluid supply ports of the housing is formed with an open upstream end, and a first fluid is supplied from upstream to the first part and supplied to the second part as a swirling flow. One of the multiple fluid supply ports of the housing is formed in a portion corresponding to the wing of the third portion, and the second fluid is supplied to the third portion and supplied to the fourth portion as a vortex flow, mixed with at least the first fluid. Internal structure.

13. An internal structure housed in a housing, which is provided with a plurality of fluid supply ports for supplying at least a first and a second fluid, and a fluid outlet at the downstream end for outputting a mixture of the plurality of fluids, The internal structure includes a first part, a second part, a third part, and a fourth part. The first part includes a shaft and a blade that is spirally formed to generate a vortex flow in the fluid. The second part is located downstream of the first part and includes a shaft and a plurality of protrusions projecting from the outer surface of the shaft. The third part is located downstream of the second part and includes a shaft and a blade that is spirally formed to generate a vortex flow in the fluid. The fourth part is located downstream of the third part and includes a shaft and a plurality of protrusions projecting from the outer surface of the shaft. One of the multiple fluid supply ports of the housing is formed in the part corresponding to the wing of the first part, and the first fluid is supplied to the first part and then supplied to the second part as a vortex flow, and one of the multiple fluid supply ports of the housing is formed at the upstream end, and the same or different fluid as the first fluid is supplied to the first part from upstream, One of the multiple fluid supply ports of the housing is formed in a portion corresponding to the wing of the third portion, and the second fluid is supplied to the third portion and supplied to the fourth portion as a vortex flow, mixed with at least the first fluid. Internal structure.

14. An internal structure housed in a housing, which is provided with a plurality of fluid supply ports for supplying at least a first and a second fluid, and a fluid outlet at the downstream end for outputting a mixture of the plurality of fluids, The internal structure includes a first part, a second part, a third part, and a fourth part. The first part includes a shaft and a blade that is spirally formed to generate a vortex flow in the fluid. The second part is located downstream of the first part and includes a shaft and a plurality of protrusions projecting from the outer surface of the shaft. The third part is located downstream of the second part and includes a shaft and a blade that is spirally formed to generate a vortex flow in the fluid. The fourth part is located downstream of the third part and includes a shaft and a plurality of protrusions projecting from the outer surface of the shaft. One of the multiple fluid supply ports of the housing is formed in a portion corresponding to the wing of the first portion, and the first fluid is supplied to the second portion while being formed into a swirling flow; the other of the multiple fluid supply ports is formed in a portion corresponding to the wing of the third portion, and the second fluid is supplied to the third portion, and is supplied to the fourth portion while being mixed with the first fluid supplied from the second portion. Internal structure.

15. The internal structure according to claim 14, characterized in that the wings of the first and third portions are concentrically recessed at the positions where the fluid supply port of the housing is provided, compared to the other portions, so as not to obstruct the injection of the first fluid and the second fluid.

16. An internal structure housed in a housing, which is provided with a plurality of fluid supply ports for supplying at least a first, second, and third fluid, and a fluid outlet at the downstream end for outputting a mixture of the plurality of fluids, The internal structure includes a first part, a second part, a third part, and a fourth part. The first part includes a shaft and a blade that is spirally formed to generate a vortex flow in the fluid. The second part is located downstream of the first part and includes a shaft and a plurality of protrusions projecting from the outer surface of the shaft. The third part is located downstream of the second part and includes a shaft and a blade that is spirally formed to generate a vortex flow in the fluid. The fourth part is located downstream of the third part and includes a shaft and a plurality of protrusions projecting from the outer surface of the shaft. One of the multiple fluid supply ports of the housing is an opening at the upstream end of the housing, from which a first fluid is supplied to the first part; another of the multiple fluid supply ports is formed in a part of the first part of the housing corresponding to a wing, from which a second fluid is supplied and mixed with the first fluid as a swirling flow to the second part; yet another of the multiple fluid supply ports is formed in a part of the third part of the housing corresponding to a wing, from which a third fluid is supplied to the third part, from which a third fluid is supplied and further mixed with the mixed fluid of the first and second fluids supplied from the second part as a swirling flow to the fourth part. Internal structure.

17. The internal structure according to claim 16, characterized in that the wings of the first and third portions are concentrically recessed at the positions where the fluid supply port of the housing is provided, compared to the other portions, so as not to obstruct the injection of the second fluid and the third fluid.

18. An internal structure housed in a housing, which is provided with a plurality of fluid supply ports for supplying at least a first and a second fluid, and a fluid outlet at the downstream end for outputting after mixing the plurality of fluids, The internal structure includes a first part, a second part, a third part, and a fourth part. The first part includes a shaft and a blade that is spirally formed to generate a vortex flow in the fluid. The second part is located downstream of the first part and includes a shaft and a plurality of protrusions projecting from the outer surface of the shaft. The third part is located downstream of the second part and includes a shaft and a blade that is spirally formed to generate a vortex flow in the fluid. The fourth part is located downstream of the third part and includes a shaft and a plurality of protrusions projecting from the outer surface of the shaft. One of the multiple fluid supply ports of the housing is an opening at the upstream end of the housing, from which a first fluid is supplied and delivered to the second portion as a vortex flow; and another of the multiple fluid supply ports is formed in a portion of the third portion of the housing corresponding to a wing, from which a second fluid is supplied to the third portion and delivered to the fourth portion as a vortex flow while being mixed with the first fluid supplied from the second portion. Internal structure.

19. The internal structure according to claim 18, characterized in that the third portion of the wing is concentrically recessed at the location where the fluid supply port of the housing is provided, compared to the other portions, so as not to obstruct the injection of the second fluid.

20. A fluid utilization device that supplies a liquid as a first fluid and a gas as a second fluid to an internal structure of any one of claims 1 to 19, and outputs the mixture of liquid and gas from the fluid outlet of the storage container for use in a gas-liquid mixed state.

21. A fluid utilization device that supplies a gas as a first fluid and a liquid as a second fluid to an internal structure of any of claims 1 to 19, and outputs the mixture of liquid and gas from the fluid outlet of the storage container for use in a gas-liquid mixed state.

22. The fluid utilization device according to claim 20, characterized in that the gas supplied to the internal structure is one of the following: air, oxygen, hydrogen, nitrogen, ozone, argon, helium, ammonia, carbon dioxide, chlorine, hydrogen chloride, hydrocarbon gas, or natural gas.

23. The fluid utilization device according to claim 20, characterized in that the liquid supplied to the internal structure is one of water, seawater, oil, alcohol, chemical solution, or a mixed fluid of cement and water.

24. The fluid utilization device according to claim 20, characterized in that the gas supplied to the internal structure is air, the liquid supplied is water, and the second and fourth parts of the internal structure promote the generation of fine bubbles of air or water, thereby changing the fluid properties, and the fluid output from the fluid outlet is used for cooling and cleaning.

25. The fluid utilization device according to claim 20, characterized in that the gas supplied to the internal structure is carbon dioxide, the liquid supplied is a mixed fluid of water and cement, and the generation of fine bubbles of carbon dioxide is promoted so that they are mixed into the mixed fluid of water and cement.

26. The fluid utilization device according to claim 21, characterized in that the gas supplied to the internal structure is one of the following: air, oxygen, hydrogen, nitrogen, ozone, argon, helium, ammonia, carbon dioxide, chlorine, hydrogen chloride, hydrocarbon gas, or natural gas.

27. ​​The fluid utilization device according to claim 21, characterized in that the liquid supplied to the internal structure is one of water, seawater, oil, alcohol, chemical solution, or a mixed fluid of cement and water.

28. The fluid utilization device according to claim 21, characterized in that the gas supplied to the internal structure is air, the liquid supplied is water, and the second and fourth parts of the internal structure promote the generation of fine bubbles of air or water, thereby changing the fluid properties, and the fluid output from the fluid outlet is used for cooling and cleaning.

29. The fluid utilization device according to claim 21, characterized in that the gas supplied to the internal structure is carbon dioxide, the liquid supplied is a mixed fluid of water and cement, and the generation of fine bubbles of carbon dioxide is promoted so that they are mixed into the mixed fluid of water and cement.

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