JP2022033092A - Fluid characteristic change element and fluid system - Google Patents

Abstract

To provide a fluid characteristic change element changing the characteristics of a supplied fluid and a fluid system using the fluid characteristic change element.SOLUTION: A fluid characteristic change element changing the characteristics of a supplied fluid has a storage body and an internal structure stored in the storage body. The characteristics of the fluid is changed by passing a flow passage constituted with the storage body and the internal structure. In addition, at least a part of the surface of the internal structure is flocked.SELECTED DRAWING: Figure 3

Description

The present invention relates to a fluid characteristic changing element that changes the characteristics of the supplied fluid and a fluid system using such a fluid characteristic changing element.

Conventionally, various fluid property changing elements have been researched and developed. Here, the fluid characteristic changing element is a microbubble (a bubble having a size of 1 to 100 micrometer) or an ultrafine bubble (a bubble having a size of 1 micrometer or less, conventionally called a nanobubble) with respect to the supplied fluid. By generating fine bubbles (fine bubbles), mixing multiple fluids, stirring / diffusing or shearing the supplied fluid, and realizing these functions, the connection structure between the fluid molecules can be changed. It is an element that changes the characteristics of the feed fluid by realizing at least one function that is thought to bring about chemical changes. The patent applicant of the present application has also proposed the invention disclosed in Patents No. 6245397 and No. 6245401 as a fluid property changing element. Furthermore, other patent applicants have proposed the inventions disclosed in WO2014 / 204399 and Japanese Patent Publication No. 2016-536139.

Patent No. 6245397 Patent No. 6245401 WO2014 / 204399 Special table 2016-536139

According to the inventions disclosed in Patent Documents 1 to 4, it is possible to generate fine bubbles in the supplied fluid, for example, water by the fluid characteristic changing element. The applicant of the present application intends to realize that the generated fine bubbles are changed, specifically, the generated quantity per unit volume of the fine bubbles is increased and the concentration is increased by improving this kind of fluid property changing element. I have been.

The present invention has been developed in view of such circumstances. An object of the present invention is to provide an improvement of a fluid characteristic changing element that changes the characteristics of a supplied fluid. As one specific example, the present invention provides a fluid characteristic changing element in which generated fine bubbles are changed. In addition, it provides a fluid system using such a fluid characteristic changing element.

The present invention has the following configuration in order to solve the above problems. That is, one embodiment of the present invention is a fluid characteristic changing element that changes the characteristics of a fluid by passing through a flow path composed of a housing and an internal structure. At least a part of the surface of the internal structure is flocked.
The fluid system according to the embodiment of the present invention comprises such a fluid characteristic changing element and a utilization device in which the supplied fluid is supplied with the fluid after the characteristic change through the fluid characteristic changing element and the fluid is utilized.

According to the present invention, at least a part of the surface of the internal structure of the fluid characteristic changing element is flocked, and the flow path through which the supplied liquid passes changes, resulting in a change in the characteristics of the output fluid. Occurs. For example, the generated fine bubbles change. Specifically, the amount of microbubbles generated increases, and the concentration of generated ultrafine bubbles (the number of ultrafine bubbles per unit volume) and the particle size (distribution of particle size) change. In particular, by changing the concentration of fine bubbles, the effects of fine bubbles (cooling, cleaning, sterilization, sterility, anti-corruption, deodorization, static electricity prevention, medicinal effects, treatment, growth promotion, energy preservation and maintenance effect cleaning ability, etc. Others) can be changed.
Further, by using the fluid characteristic changing element improved in this way, an effective or efficient fluid system is constructed. That is, the equipment that uses the fluid, the cleaning equipment that cleans the target object using the fluid, the cooling equipment that cools the target object, and the like can be effectively or efficiently operated.

A deeper understanding of the present application can be obtained when the following detailed description is taken into account in conjunction with the drawings below. These drawings are merely examples and do not limit the scope of the present invention.
It is a 3D perspective view which shows one Embodiment of the internal structure of the fluid property change element which concerns on this invention. It is a figure explaining the arrangement state of the protrusions of an internal structure. It is a figure which shows typically the apparatus which performs electrostatic flocking processing on an internal structure. (A) is a diagram in which the entire internal structure is flocked, (B) is a diagram in which only the flow characteristic imparting portion (bubble generation portion) of the internal structure is flocked, and (C) is an internal structure. It is the figure which flocked only the induction part (the most downstream end part) of, and (D) is the figure of the internal structure which did not flock. It is a side view exploded view of the fluid property change element including the internal structure of FIG. It is a side perspective view of the fluid property change element including the internal structure of FIG. FIG. 4 is a diagram showing result data of measuring an ultrafine bubble generation state when an internal structure in which flocking is applied to the entire surface of FIG. 4A is used. FIG. 4 is a diagram showing result data of measuring an ultrafine bubble generation state when an internal structure in which a flocking process is applied is used only in the flow characteristic imparting portion (bubble generation portion) of FIG. 4B. It is a figure which shows the result data which measured the ultrafine bal generation state when the internal structure which flocked only the induction part of FIG. 4C was used. FIG. 4 (D) is a diagram showing result data of measuring an ultrafine bubble generation state when an internal structure without any flocking process is used. It is a figure which shows the fluid system which concerns on 1st Embodiment by this invention. It is a figure which shows the fluid system which concerns on the improvement of 1st Embodiment by this invention. It is a figure which shows the fluid system which concerns on the 2nd Embodiment by this invention. It is a figure which shows the fluid system which concerns on 3rd Embodiment by this invention. It is a 3D perspective view which shows the other embodiment of the internal structure of the fluid property change element which concerns on this invention. It is a figure explaining the arrangement of the quadrangular pyramid of the internal structure of FIG. 11 and the protrusion on the side surface of the quadrangular column. It is a figure which shows the acute angle angle of the protrusion of the internal structure of FIG. 11 and the intersection angle of the crossed flow path formed by a plurality of protrusions. It is a side view exploded view of the fluid property change element including the internal structure of FIG. It is a side perspective view of the fluid property change element including the internal structure of FIG. It is a figure which shows the fluid property change element which consists of the internal structure made of elastic material, and the accommodating body. It is a figure which shows that a plurality of connected internal structures and accommodating bodies were formed of elastic material. It is a side perspective view which is an improved example of a fluid property change element including an internal structure. It is a side perspective view which is another improved example of a fluid property change element including an internal structure.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an internal structure 20 included in an embodiment of the fluid characteristic changing element S according to the present invention. This has the same form as that shown in Patent Document 1. The internal structure 20 is formed by, for example, a method of processing a columnar member (shaft) made of a metal such as stainless steel or aluminum by cutting or grinding, a method of molding a resin such as plastic, or the like. Alternatively, it may be formed by a printing technique using a three-dimensional printer. The internal structure 20 has a conical fluid diffusion portion 22, a spiral generation portion 24, a bubble generation portion 26 corresponding to a fluid characteristic imparting portion, and a dome shape corresponding to an induction portion from the upstream side to the downstream side. 28 is provided.

The fluid diffusion portion 22 is formed by processing (for example, spinning) one end of the cylindrical member into a conical shape. The shape of the fluid diffusion portion 22 is not limited to a conical shape, and may be, for example, a dome shape. The fluid diffusion unit 22 causes the fluid flowing into the inflow side member 31 through the inflow port 38 of the storage body 30 of FIGS. 5 and 6 in which the internal structure 20 described later is housed from the center of the pipe to the outside, that is, Diffuse in the radial direction. The spiral generation portion 24 is formed by processing a part of the cylindrical member, and includes a shaft portion having a circular cross section and three spirally formed blades. With reference to FIG. 5, it is understood that in the present embodiment, the length a2 of the spiral generating portion 24 is longer than the length a1 of the fluid diffusion portion 22 and shorter than the length a4 of the bubble generating portion 26. .. Further, the radius of the portion having the maximum cross-sectional area of the fluid diffusion portion 22 is smaller than the radius of the spiral generating portion 24 (distance from the center of the shaft portion of the spiral generating portion 24 to the tip of the blade). The tips of each of the wings of the spiral generating portion 24 are displaced by 120 ° from each other in the circumferential direction of the shaft portion, and spiral counterclockwise with a predetermined interval on the outer peripheral surface from one end to the other end of the shaft portion. It is formed. In the present embodiment, the number of blades is set to 3, but the number is not limited to such an embodiment. Further, the shape of the blade of the swirl generation unit 24 is such that the fluid diffused while passing through the fluid diffusion unit 22 and entering the swirl generation unit 24 can cause a swirl flow while passing between the blades. If there is, there is no particular limitation. In the present embodiment, when the internal structure 20 is stored in the storage body 30 shown in FIGS. 5 and 6, the spiral generation unit 24 is close to the inner peripheral surface of the outflow side member 34 of the storage body 30. Has an outer diameter. The bubble generation portion 26 is formed by processing the downstream side portion of the cylindrical member, that is, the downstream side portion after forming the fluid diffusion portion 22 and the spiral generation portion 24. In the present embodiment, there is a connecting portion 25 having a length a3 between the swirl generating portion 24 and the bubble generating portion 26. In this case, since the diameter of the spiral generating portion 24 is the same as the diameter of the bubble generating portion 26, the connecting portion 25 has the same diameter, but the diameter of the shaft portion of the spiral generating portion 24 is small, and the shaft of the bubble generating portion is small. If the diameter of the part is large, there will be a step, but if necessary, a taper may be added.

As shown in FIG. 1, a large number of protrusions (convex portions) are formed in a net shape on the outer peripheral surface of the shaft portion having a circular cross section of the bubble generation portion 26. When the protrusion is viewed from the outer peripheral surface, it has a substantially rhombic shape as shown in FIG. 2 when viewed in a plane. Each protrusion is formed by, for example, cutting, grinding, turning, or end milling a cylindrical member individually or in combination so as to project outward from the outer peripheral surface of the shaft portion. Can be done. More specifically, the method of forming each protrusion is, for example, as shown in FIG. 2, with a plurality of lines 51 having a constant interval in the direction of 90 degrees with respect to the length direction of the cylindrical member. , Lines 52 at regular intervals having a predetermined angle (for example, 60 degrees) with respect to the above-mentioned length direction are crossed, and the line 51 and the line 51 are skipped once for cutting and an inclined line. Cutting is performed by skipping once between the 52 and the line 52. In this way, a plurality of rhombic protrusions protruding from the outer peripheral surface of the shaft portion are regularly formed by skipping them one by one vertically (circumferential direction) and left and right (length direction of the shaft portion). Will be done. Further, in the present embodiment, as will be described later, when the internal structure 20 shown in FIGS. 5 and 6 is stored in the storage body 30, the bubble generation unit 26 is placed on the inner peripheral surface of the outflow side member 34 of the storage body 30. It has an outer diameter close to each other. Further, the downstream end portion of the internal structure 20 is processed into a dome shape to form the guide portion 28. The shape of the guide portion 28 may be conical. The fluid is guided toward the center by the guiding portion 28.

Next, a process of flocking a part or all of the surface of the internal structure 20 thus formed will be described. Specifically, this flocking process is not limited to this, but is by electrostatic flocking process or flock process, and as shown in FIG. 3, plus (+) and minus (-) electrode plates E +, E. Electricity is passed from the DC high voltage V to-to create an electric field (the arrow pointing from the bottom to the top in FIG. 3 indicates the direction of the electric field). Then, in this electric field, the internal structure 20 to which the adhesive is applied to the surface in advance is placed, and the minute pile Pi made of metal or resin is charged and flies to the place where the adhesive is applied. The pile will be planted. The broken line in FIG. 3 shows a state in which the pile Pi is charged to cause polarization rotation (not shown), and the positive electrode is attracted to the negative electrode plate E-direction and flies.

In this way, the pile Pi is planted in the portion to which the adhesive is applied, and then the pile that is no longer needed after drying is removed, so that the hair is planted in the necessary portion of the internal structure 20 and the flocking process is completed. Will be. The portion that does not require flocking may be covered with a protective sheet or the like to prevent the pile Pi from being planted, and the flocking step may be performed. As the process of flocking, in addition to the above-mentioned electrostatic flocking or flocking method, there are also methods such as spraying with a compressor, spraying, or using mechanical vibration.

For verification and comparison of the effects of the present invention, as shown in FIG. 4, the portion where the flocking process is performed is the entire surface of (A) the internal structure 20, and bubble generation corresponding to (B) the fluid property-imparting portion is generated. It is assumed that only the surface of the portion 26 is used, (C) the surface of the dome-shaped guide portion 28 (most downstream end portion) corresponding to the guide portion is used, and (D) no flocking process is applied to the surface. , And 4 types will be prepared as samples.

By the way, the internal structure 20 prepared in this way is housed and fixed in the storage body 30 of FIGS. 5 and 6, and the fluid supply pipe 10 (that is, the fluid characteristic changing element S) is configured. Here, FIG. 5 is a side view of the fluid supply pipe 10, and FIG. 6 is a side perspective view of the fluid supply pipe 10. The storage body 30 is composed of an inflow side member 31 and an outflow side member 34. The inflow side member 31 and the outflow side member 34 have the form of a pipe having an empty inside in a cylindrical shape. The inflow side member 31 has an inflow port 38 having a predetermined diameter at one end, and a female thread formed by threading an inner peripheral surface on the other end side for connection with the outflow side member 34. 32 is included. A nut 11 is integrally formed on the inflow port 38 side. The inner diameter of the inflow side member 31 is different from the inner diameter of both ends, that is, the inner diameter of the inlet 38 and the inner diameter of the female screw 32, and the inner diameter of the inlet 38 is smaller than the inner diameter of the female screw 32. A tapered portion 33 is formed between the inflow port 38 and the female screw 32. The outflow side member 34 has an outflow port 39 having a predetermined diameter at one end, and a male screw 35 formed by threading an outer peripheral surface on the other end side for connection with the inflow side member 31. To prepare for. The diameter of the outer peripheral surface of the male screw 35 of the outflow side member 34 is the same as the inner diameter of the female screw 32 of the inflow side member 31. A nut 12 is integrally formed on the outlet 39 side. A tubular portion 36 and a tapered portion 37 are formed between the nut 12 and the male screw 35. The outflow side member 34 has different inner diameters at both ends, that is, the inner diameter of the outlet 39 and the inner diameter of the male screw 35, and the inner diameter of the outlet 39 is smaller than the inner diameter of the male screw 35. The storage body 30 is formed by connecting the inflow side member 31 and the outflow side member 34 by screw coupling between the female screw 32 on the inner peripheral surface of the inflow side member 31 and the male screw 35 on the outer peripheral surface of the outflow side member 34. ..

The above configuration of the storage body 30 is only one embodiment. For example, the connection between the inflow side member 31 and the outflow side member 34 is not limited to the screw connection described above, and any method of connecting mechanical parts known to those skilled in the art can be applied. Further, the form (including the outer shape) of the inflow side member 31 and the outflow side member 34 is not limited to the form shown in FIGS. 5 and 6, and may be arbitrarily selected by the designer or depending on the application of the fluid supply pipe 10. You can change it. The inflow side member 31 and the outflow side member 34 are made of, for example, a metal such as stainless steel or aluminum, or a resin such as plastic.

Referring to FIGS. 1, 5 and 6 together, the fluid supply pipe 10 has a male screw 35 on the outer peripheral surface of the outflow side member 34 and an inflow side member 31 after the internal structure 20 is housed in the outflow side member 34. It is understood that it is configured by connecting with the female screw 32 on the inner peripheral surface of the above.

Next, the flow while the fluid passes through the fluid supply pipe 10 (fluid characteristic changing element S) will be described with reference to the drawings. When the fluid is supplied to the fluid supply pipe 10, the fluid passes through the space of the tapered portion 33 of the inflow side member 31 of the fluid supply pipe 10 and hits the fluid diffusion portion 22 to the outside from the center of the fluid supply pipe 10. It is diffused toward, that is, in the radial direction. The fluid diffusion unit 22 acts to guide the inflowing fluid so that it effectively enters the swirl generation unit 24. The diffused fluid passes between the three blades spirally formed in the counterclockwise direction of the spiral generating portion 24. The fluid is formed into a strong swirl flow by each blade of the swirl generating portion 24, passes through the connecting portion 25, and is sent to the bubble generating portion 26.

Then, the fluid passes through a complicated flow path formed between the cylindrical inner wall surface of the housing body 30 and the bubble generation portion 26 of the internal structure 20. Specifically, the fluid passes between a plurality of protrusions regularly formed on the outer peripheral surface of the shaft portion of the bubble generation portion 26. These plurality of protrusions form a plurality of narrow flow paths. As described with reference to FIG. 2, the flow path defined by the line 52 is a spiral flow path in which, for example, 12 lines (at intervals of 30 degrees with respect to the circumference of the shaft portion) are formed in the shaft portion, and the line 51 The flow path defined by is, for example, a closed flow path of 14 rings formed on the shaft portion. Then, the flow paths of these two systems become cross flow paths that intersect on the axis. In this case, since the fluid is supplied from the upstream swirl generator 24 as, for example, a counterclockwise swirl flow, the momentum (velocity) of the fluid flowing in the spiral flow path defined by the line 52 is defined by the line 51. The momentum (velocity) of the fluid flowing in the closed flow path of the spiral becomes large. Then, the fluid repeatedly collides while flowing from the upstream to the downstream in the narrow crossing flow path. Then, by passing through such a flow path, agitation / diffusion or shearing of the fluid is induced.

Further, in the internal structure 20, the fluid flows from the upstream having a large cross-sectional area (swirl generating portion 24) to the downstream having a small cross-sectional area (intersection flow path formed between a plurality of protrusions of the bubble generating portion 26). Has a structure. This structure changes the pressure of the fluid as described below. The relationship between pressure, velocity, and potential energy when no external energy is applied to the fluid is expressed as the following Bernoulli's equation.

Here, p is the pressure at one point in the streamline, that is, static pressure or static pressure, ρ is the density of the fluid, v is the velocity of flow at that point, g is the gravitational acceleration, and h is that point with respect to the reference plane. The height and k are constants. The Bernoulli theorem expressed as the above equation applies the energy conservation law to a fluid, the first term is pressure energy (static pressure), the second term is kinetic energy (dynamic pressure), and the third term is. Explain that the sum of all forms of energy, which corresponds to potential energy and is streamlined with respect to the flowing fluid, is always constant. According to Bernoulli's theorem, the fluid velocity is slow and the static pressure is high in the upstream where the cross-sectional area is large. On the other hand, in the downstream where the cross-sectional area is small, the velocity of the fluid becomes high and the static pressure becomes low.

When the fluid is a liquid, the vaporization of the liquid begins when the lowered static pressure reaches the saturated vapor pressure of the liquid. Such a phenomenon in which the static pressure P becomes lower than the saturated vapor pressure Pv (3000-4000 Pa in the case of water) within a very short time at almost the same temperature and the liquid is rapidly vaporized is called cavitation. The internal structure of the fluid supply pipe 10 induces such a cavitation phenomenon. Due to the cavitation phenomenon, the liquid boils with minute bubble nuclei of 100 microns or less existing in the liquid as nuclei, and many small bubbles are generated due to the release of the dissolved gas. That is, fine bubbles (fine bubbles) including a large number of micro bubbles and ultra fine bubbles are generated while the fluid passes through the bubble generation unit 26.

Also, when the fluid is water, one water molecule forms a hydrogen bond with the other four water molecules, but it is not easy to break this hydrogen bond network. Therefore, water has a much higher boiling point and melting point than other liquids that do not form hydrogen bonds, and exhibits a high viscosity. Since the high boiling point of water brings about an excellent cooling effect, it is often used as cooling water, but there is a problem that the size of water molecules is large and the permeability and lubricity are not good. If the fluid supply pipe 10 is used, it is considered that the above-mentioned cavitation phenomenon causes vaporization of water, and as a result, the hydrogen bond network of water is destroyed. In addition, the fine bubbles generated by vaporization improve the permeability and lubricity of the fluid (water). Improving permeability results in increased cooling efficiency.

The fluid that has passed through the bubble generating portion 26 is guided toward the center of the fluid supply pipe 10 by the dome-shaped guiding portion 28 provided on the downstream side. After that, the fluid passes through the tapered portion 37 and flows out through the outlet 39. Since the fluid passing through the fluid characteristic element S such as the fluid supply pipe 10 contains fine bubbles, it has an effect of improving the cooling effect and the cleaning effect.

Now, here, a comparative experiment of microbubble generation in the fluid supply pipe 10 using the four samples (FIGS. 4A to 4D) prepared above as the internal structure 20 is performed. The sizes of these four samples are the same, the total length of the internal structure 20 is 88.8 mm, the diameter of the outer peripheral surface (projection surface) of the shaft is 30.8 mm, and the diameter of the bottom surface (projection bottom surface) of the shaft is. It is 19.4 mm. The pile Pi planted on the surface is made of stainless steel having a diameter of 50 microns and a length of 300 microns. Then, the fluid is passed through the fluid supply pipe 10 only once as industrial pure water at the same water temperature and flow pressure (one time, the fluid is not circulated). In this way, the fluid to be output from each sample is collected, and the ultrafine bubbles generated in each fluid are measured by NTA (Nano Tracking Analysis) technology. This technique is called NanoSigt and is provided by Malvem PANalytical. With this technique, it is possible to measure the velocity of Brownian motion of nanoparticles in a fluid and obtain the particle size and number.

7A to 7D show the results obtained by measuring the ultrafine val generation state when the internal structures of FIGS. 4A to 4D are used respectively. The graph on the left side of each figure shows the particles (basically considered to be ultrafine bubbles) contained in the fluid collected once, measured 5 times and averaged. The horizontal axis is the size of the particle size (unit: nanometer), and the vertical axis is the concentration: concentration (number of particles per milliliter). Among the measurement results (Results) on the right side, Mean is the average particle diameter, Mode is the most frequent particle diameter, and the D ** value is the particle diameter that becomes **% of the total when the particle size frequency is accumulated. show.

The results of the experiments are arranged in descending order of concentration as follows.
1st place: Fig. 7C 1.34 × 10 8 pieces (134 million pieces)
2nd place: Fig. 7B 9.99 x 10 7th power (0.99 million)
3rd place: Fig. 7A 9.34 × 10 7 pieces (903 million pieces)
4th place: Fig. 7D 4.03 × 10 7 pieces (040 million pieces)
As a result, compared to the type shown in FIG. 4 (D) without any flocking treatment, the number of ultrafine bubbles in the flocked sample clearly increased, and the ratio was 2.33. It is from double to 3.35 times. This is because, as a result of the flocking process applied to the surface, the flow path becomes complicated, vortices and turbulence are likely to occur, and further, the collision between the fluid and the pile P1 and the shearing of the fluid are repeated, resulting in ultrafine particles. It is considered that the number of particles of the bubble, that is, the concentration has increased. In addition, the average particle diameter (Mean) and the most frequent particle diameter (Mode) are both smaller in FIG. 7D of the sample not subjected to the flocking process than in the sample subjected to the flocking process of FIGS. 7A to 7C. The result is that.
More specifically, the particles are arranged in descending order of average particle size (Mean) as follows.
1st place: Fig. 7A 124.5nm
2nd place: Fig. 7C 118.2nm
3rd place: Fig. 7B 108.7 nm
4th place: Fig. 7D 107.5 nm
Further, when arranged in descending order of the most frequent particle diameter (Mode), the results are as follows.
1st place: Fig. 7C 108.9nm
2nd place: Fig. 7B 98.4 nm
3rd place: Fig. 7A 79.9 nm
4th place: Fig. 7D 53.8 nm
From these results, it is considered that the flocking process is involved in the generation of ultrafine bubbles having a large particle size, or works in the direction of dispersing the size of the particle size of the ultrafine bubbles.

According to the above experimental results, the concentration of ultrafine bubbles is clearly increased by flocking at least a part of the internal structure 20. In addition, since the generation of microbubbles (white turbid fine bubbles) larger than the ultrafine bubbles can be visually confirmed, the fluid supply pipe 10 including such an internal structure 20 should be applied to various fluid systems. Will be useful, and the fluid system using the fluid characteristic changing element S (fluid supply pipe 10 including the internal structure 20) having such a hair-implanting process on the surface will be described below.

FIG. 8A is a first embodiment of a fluid system. In this system, the fluid is stored in the tank 1 in the fluid supply system 300, the fluid is pumped from the tank 1 by the pump 2, and the fluid is supplied to the target device 400 via the fluid characteristic changing element S. .. Fluid characteristics in the fluid characteristic changing element S (having the fluid supply pipe 10 described above or another structure described later, and the surface of the entire internal structure or at least a part thereof is flocked). Is changed and then used and consumed in the target device 400 (fluid does not circulate). Therefore, although the fluid is always supplied to the tank 1, the tank 1 is not always necessary, and for example, the tank 1 may be directly connected to the water pipe so that the fluid (tap water) is always supplied. As a fluid system that directly uses such tap water, there is a fluid system for washing, bathing, washing, washing, etc. in the home. Similarly, it can be applied to fluid systems that directly use tap water in factories, offices, and stores. Alternatively, it can be applied to fluid systems for water treatment in agriculture, fisheries or other fields that utilize water containing fine bubbles. It is also used for washing foodstuffs 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 contaminated water. In addition, if it is a fluid system that uses a specific fluid, the tank 1 will be used while being appropriately replenished with the fluid. Such target equipment is various manufacturing / production machines, and the fluid from the fluid characteristic changing element S can be used for manufacturing and production of various articles (food, chemicals, emulsion fuel, etc.).
FIG. 8B is a fluid system that is an improvement of the above-mentioned fluid system of FIG. 8A, and is a feedback that feeds back a part of the fluid output from the fluid characteristic changing element S to the tank 1 with respect to the system configuration of FIG. 8A. A loop FR is provided. By this readback loop FR, the concentration of fine bubbles contained in the fluid stored in the tank is repeatedly increased with the passage of time, and the change in the characteristics of the fluid by the fluid characteristic changing element becomes more effective.

FIG. 9 is a second embodiment of the fluid system. The same parts as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. In this system, the fluid characteristic changing element S is applied to a fluid system in which the heat generated by the target device 500 is exchanged by the heat exchanger 501. The fluid from the fluid characteristic changing element S (including ultrafine bubbles, which is expected to have the effect of temperature change) is passed through the pipe in the heat exchanger 501. In this heat exchanger 501, heat is exchanged while the fluid circulating from the target device 500 passes through another pipe, and the fluid returning to the target device 500 is cooled (during cooling) or heated (during heating). Being back. The fluid that has passed through the heat exchanger 501 is returned to the original temperature by the chiller 502 and is circulated and supplied to the tank 1.

Therefore, the target device 500 and the heat exchanger 501 include various heating / cooling devices. It can also be applied to air conditioners, refrigerators, automobile radiators, and various boilers. Alternatively, it can also be used for air conditioning in industrial manufacturing processes. In this case, the fluid flowing from the target device 500 to the heat exchanger 501 may be a gas as well as a liquid.

FIG. 10 is a third embodiment of the fluid system. The same parts as those of the first embodiment and the second embodiment are designated by the same reference numerals, and the description thereof will be omitted. In this system, the fluid from the fluid characteristic changing element S is supplied to the target device 600, and the used fluid is circulated and supplied to the tank 1 after filtering unnecessary substances and impurities by the filter 601. Since the fluid from the fluid characteristic changing element S contains fine bubbles, it has a cooling effect and a cleaning effect. Therefore, the target device 600 is a machine tool, and a fluid is discharged from a nozzle to irradiate a work, a grindstone, a cutting tool such as a drill, or the like. Alternatively, the target device 600 can be used as a cleaning system for a factory production line (particularly precision equipment). Similarly, the target device 600 can be used as a cleaning device for bottles, containers, and equipment. Furthermore, after ozone is added to the tank 1 and stored, or ozone is mixed with the water from the tank (mixing device is not shown), the characteristics are changed to ozone bubble water by the fluid characteristic changing element S, and the target device is used. In 600, the target product is irradiated with ozone bubble water. By doing so, deodorizing, decolorizing, and bactericidal effects can be obtained.

As described above, in various fluid systems (not limited to the fluid systems of the first to third embodiments described above), the fluid characteristics in which the surface of the entire internal structure or at least a part thereof is flocked. After the characteristics of the fluid are changed by the changing element S (in particular, the concentration of fine bubbles contained in the fluid is increased), the fluid is provided to the target device and used.

Further, the fluid characteristic changing element S is not limited to the configuration example of FIGS. 1, 2, 4 to 6 described above. The shape of the internal structure 20 is not limited to that shown in FIG. 1 described above, and may be, for example, any one having a fluid property imparting portion on the shaft body. The shape of the diffusion portion provided as needed may be a cone shape, and includes a cone shape as well as a pyramid shape, and the fluid has a certain angle with respect to a specific direction, for example, the inflow direction of the fluid. Anything that guides in the direction may be used.

FIG. 11 shows an internal structure 140 as another configuration example of the internal structure. A quadrangular pyramid 141 is formed at the head thereof, a quadrangular prism 142 is formed at the remaining portion, and a plurality of protrusions 140p are formed on the four side surfaces of the quadrangular prism 142. The plurality of protrusions 140p are arranged in a net shape, the bottom surface thereof is the same surface as the outer surface (side surface) of the quadrangular prism 142, and the upper surface is the outer surface of the cylindrical inner shaft body, which is on an arc as a whole. It becomes tall and rounded. That is, the center is high and the center is low toward the outside as a whole in accordance with the arc of the inner wall surface of the storage body 30 of FIGS. 13 and 14, which will be described later. The internal structure 140 is formed by, for example, a method of metal processing a columnar member made of metal such as stainless steel or aluminum, a method of molding a resin such as plastic, or the like. Alternatively, the metal or resin can be formed using a three-dimensional printer. When machining a metal cylindrical shaft, cutting, turning, and grinding are performed individually or in combination. For example, it can be cut by an end mill. The manufacturing process includes a step of preparing a cylindrical internal shaft body and a prismatic pyramid (in this example, a square pyramid 141, but a triangular prism, a pentagonal pyramid, or a hexagonal prism) at one end of the cylindrical internal shaft body. It is also possible to use a triangular prism, a pentagonal prism, a hexagonal prism, etc. ), By forming an intersecting flow path 140r having the outer surface of the cylinder as the outer diameter of the cylinder, there is a step of forming a plurality of protrusions 140p having the bottom surface as the side surface of the prism and the upper surface as the side surface of the cylinder. It is desirable that the radius of the original columnar member is the same as or slightly smaller than the radius of the inner wall of the storage body 30, and the size is such that the columnar member can enter the storage body and no gap is formed.

When the internal structure 140 is inserted and fixed to the storage body 30 as shown in FIG. 14, the quadrangular pyramid 141 diffuses the inflowing fluid in the radial direction from the center of the circle of the storage body 30, and the quadrangular pyramid 142. It will lead to the four sides of. Then, the fluid that reaches each side surface flows through the intersecting flow paths 140r formed between the plurality of protrusions 140p, but the cylindrical inner wall surface of the housing 30 and the plurality of protrusions 140p. Since the heights are almost the same (no gaps), the fluid flows through the crossing flow path 140r between the plurality of protrusions 140p (that is, there is almost no fluid flowing on the upper surface of the plurality of protrusions 140p).

FIG. 12A is a diagram showing one side surface of the internal structure 140 on a plane and showing an arrangement of a quadrangular pyramid 141 and a protrusion 140p, and the quadrangular pyramid 141 on the upstream side has an apex angle of, for example, 60. Degree. Of course, this angle can be changed as appropriate. Then, on the four side surfaces of the quadrangular prism 142 on the downstream side, rhombic (bottom shape) protrusions 140p having an apex angle of 41.11 ° are formed in a net shape. The apex angle can also be changed as appropriate. Therefore, as shown in FIG. 12B, the crossing angle of the crossing flow path 140r formed between the plurality of protrusions 140p is also 41.11 °. Specifically, the plurality of protrusions 140p having a diamond-shaped bottom surface formed on one side surface are formed in 14 rows of 3, 4, 3, ..., 4 from the upstream to the downstream, and one. There are 49 on the side of the rhombus, and the total of the four sides is 196. Of course, this number can be changed as appropriate. The shape of the plurality of protrusions 140p does not have to be a diamond-shaped protrusion on the bottom surface (for example, a triangle, a polygon, etc.), and the arrangement thereof can be appropriately changed (angle, spacing, etc.) from FIGS. 12A and 12B. Further, in the arrangement of the plurality of protrusions 140p, the directions of the protrusions may be alternately and slightly inclined from the length direction of the internal shaft body 140 to the left-right direction. Alternatively, the internal shaft body 140 may be slightly tilted from the length direction with respect to the center of the rhombus on the bottom surface of the plurality of protrusions 140p.

The internal structure 140 configured in this way is also flocked, but is not limited to this, for example, the electrostatic flocking shown in FIG. 3 is applied, and the whole or a part thereof, for example, four. Only the surface of the part of the pyramid 141, only the surface of the part of the quadrangular prism 142 having a plurality of protrusions 140p formed on the side surface, or the induction part of the pyramid shape (square pyramid) additionally provided at the output end (Fig.) Only the surface of) (not shown) is subjected to electrostatic flocking. In this case, depending on the material of the internal structure, a metal pile or a resin pile is flocked.

FIG. 13 is a side view of the fluid supply pipe 100 (fluid characteristic changing element S) according to this embodiment, and FIG. 14 is a side perspective view of the fluid supply pipe 100. The fluid supply pipe 100 includes a housing 30 and the internal structure 140 described above. In FIG. 14, the fluid flows from the inflow port 38 to the outflow port 39 side. Since the structure of the storage body 30 is the same as that of the storage body 30 of the embodiment (FIGS. 5 and 6) described above, the same reference numerals are given and the description thereof will be omitted.

The fluid flowing in through the inflow port 38 passes through the space of the tapered portion 33 of the inflow side member 31 and hits the quadrangular pyramid 141 of the internal shaft body 140 toward the outside (that is, in the radial direction) from the center of the fluid supply pipe 100. And it is diffused (toward the bottom of the quadrangular pyramid). The diffused fluid reaches each side surface of the quadrangular prism 142 and is formed from the upstream side to the downstream side in the form of three, four, three, and so on. It travels between the narrow crossing flow paths 140r (crossing angle 41.11 °) between the plurality of protrusions 140p having a tinged shape. At this time, the strength of the fluid flow in the intersecting flow paths is the strength of flowing from the upstream to the downstream in FIG. 12A from the diagonally left upstream to the diagonally downstream to the right, and the strength of the flow from the diagonally right upstream to the diagonally downstream to the left. The speed of flow to is almost the same. The angle between these two flow directions is the above-mentioned intersection angle (41.11 °). The fluid collides with the plurality of protrusions 140p and is sheared, and the fluid repeatedly collides, mixes, and disperses at the plurality of intersecting flow paths 140r. In FIG. 12A, the fluid that came to the left end of the side surface of the square pillar 142 (upper end of FIG. 12A) turned back, that is, flowed from the upstream to the downstream, and from the diagonally right upstream to the diagonally downstream to the left. The flow will flow from the diagonally upstream left to the diagonally downstream right, and the fluid that has reached the right end (lower end of FIG. 12A) will turn back, that is, from the upstream to the downstream, from the diagonally upstream left. The flow flowing in the diagonally right downstream direction flows from the diagonally right upstream direction to the left diagonal downstream direction. The fluid passes through a plurality of narrow flow paths 140r formed by the plurality of protrusions 140p to generate a large number of minute vortices. Further, due to the multi-stage network arrangement of the plurality of protrusions 140p, a flip-flop phenomenon occurs in which the fluid flows alternately in the intersecting flow paths 140r and switches to the left and right. Such a phenomenon induces mixing and diffusion of fluids. The structure of the protrusion 140p is also useful when mixing two or more fluids with different properties.

The internal structure 140 is a structure that allows the fluid to flow from the upstream side (square pyramid 141) having a large cross-sectional area to the downstream side (intersection flow path 140r formed between a plurality of protrusions 140p) having a small cross-sectional area. Has. With this structure, the internal structure of the fluid supply pipe 100 induces a cavitation phenomenon, similar to the fluid supply pipe 10 of the embodiment described above. When the fluid is water, the fine bubbles generated by vaporization reduce the surface tension and thus improve the permeability and lubricity. Improving permeability results in increased cooling efficiency. Alternatively, it is also possible to inject air or other gas into the fluid in advance and cause the dissolved gas to be liberated by the collision of the fluid with a large number of protrusions 140p to generate a large number of fine bubbles. In this case as well, the generated fine bubbles reduce the surface tension of water, thus improving the permeability and lubricity. Improving permeability results in increased cooling efficiency. It is thought that the cavitation phenomenon causes vaporization of water, and as a result, the hydrogen bond network of water is destroyed and the viscosity becomes low. The fluid that has passed through the plurality of narrow intersecting flow paths 140r on each side surface of the square pillar 142 of the internal shaft body 140 flows toward the downstream end portion of the internal structure 140. At the downstream end, due to the flip-flop phenomenon, the fluid flows out to the space having the tapered portion 37 downstream of the outflow side member 34 while switching the flow in the left-right direction. After that, it is discharged through the outlet 39. Further, also in the present embodiment, the generation of fine bubbles is changed by flocking the entire surface of the internal structure 140 or at least a part thereof. For example, as the concentration of fine bubbles increases, the effect of the fluid increases.

FIG. 15 shows an example of yet another fluid characteristic changing element S. In the embodiments so far, the internal structure and the storage body have been described on the premise that they are not elastically deformed even if they are made of metal or resin. In this example, a fluid supply pipe 1200 formed by using an elastic material for these internal structures 1240 and storage body 1230 will be described.

As the elastic material of the internal structure or the storage body of the present embodiment, an elastomer material, for example, but not limited to, polyvinyl chloride, polyvinylidene chloride, a fluororesin, a silicone resin, a ceramic, or the like can be used. Can be used. In order to manufacture the internal structure from these elastic materials, a method by injection molding or a method by a three-dimensional printer can also be adopted. Since the internal structure 1240 manufactured by these methods has elastic force, the fluid supply pipe 1200 may be connected to a flexible article such as a hose (in this case, the accommodating body is also made of an elastic material). , The fluid supply pipe 1200 can be installed in the interior of the article integrally. Then, the internal structure 1240 is subjected to, for example, the electrostatic flocking process shown in FIG. 3, and a plurality of protrusions 1240p are formed on the surface of the whole or a part thereof, for example, only the portion of the quadrangular pyramid 1241 or the side surface thereof. Electrostatic flocking is performed only on the portion of the quadrangular prism 1242 or only the guide portion (not shown) provided at the output end. In this case, a resin pile corresponding to the material of the internal structure is transplanted.

The fluid supply pipe 1200 of FIG. 15 has a hollow storage body 1230 having an inflow port 38 into which the fluid flows in and an outflow port 39 in which the fluid flows out, and has an inner wall surface having a circular cross section, and is stored and fixed in the storage body 1230. A prismatic shaft body having a plurality of side surfaces (the one in FIG. 15 has four faces, but may have three faces or a plurality of more faces) (four in FIG. 15). It has an internal structure 1240 which is a square column 1242). The housing body 1230 and the internal structure 1240 are made of an elastic material having elasticity, and are elastically deformed as a whole. For example, the storage body 1230 may have a hose shape. A pyramid (square pyramid 1241 in FIG. 15) is provided on the inlet side of the internal structure 1240. The shape of this pyramid can also be appropriately changed according to the number of side surfaces of the prism of the shaft body. On the side surface of the square pillar 1242, a plurality of protrusions 1240p are arranged in a mesh pattern as in the other embodiments described above, and between the side surface of the square pillar 1242 of the internal structure 1240 and the inner wall surface of the storage body 1230. The space formed between the plurality of protrusions 1240p is the flow path of the fluid. The fluid is supplied from the inflow port 38 of the housing body 1230 and is dispersed on each side surface of the quadrangular prism 1242 by the quadrangular pyramid 1241. Then, the flow characteristic is given by passing through the flow path 1240r between the plurality of protrusions 1240p. After that, the fluid flows out from the outlet 39. As described above, in the present embodiment, both the housing body 1230 and the internal structure 1240 have elastic force, and the fluid supply pipe 1200 can be used when it is necessary to bend the fluid supply pipe 1200 as a whole. Further, it is also possible to store only the internal structure 1240 in a storage body 1230 having an elastic force and having a bent shape and having no elastic force.

Further, also in the present embodiment, the generation of fine bubbles is changed by flocking the entire or at least a part of the internal structure 1240. For example, as the concentration of fine bubbles increases, the effect of the fluid increases.

In FIG. 16, as another fluid characteristic changing element S, a plurality of internal structures are connected to form a fluid supply pipe 1300. A plurality of internal structures 1340-1 and 1340-2 are arranged in the storage body 1330. In FIG. 16, the number is two, but the number is not limited to this, and three or more internal structures can be connected. A pyramid (square pyramid 1341) is provided at the head of the internal structure 1340-1 provided in the upstream portion of the storage body 1330. The shape of this pyramid can also be appropriately changed according to the number of side surfaces of the prism of the shaft body. Similar to the other examples described so far, a plurality of protrusions 1340p are arranged in a mesh pattern on the side surface of the square pillar 1342, and the side surface of the square pillar 1342 of the internal structure 1340-1 and the inner wall surface of the storage body 1310 are arranged. The space formed between the plurality of protrusions 1340p is the fluid flow path 1340r. The protrusions 1340p may be slightly tilted in different directions on the left and right for each row, or may be all parallel to the length direction of the shaft body. Then, the internal structure 1340-1 and the downstream internal structure 1340-2 are connected via a connecting portion 1350 having a prismatic shape (square column in FIG. 16). The shape of the connecting member 1350 may be a cylindrical shape.

The downstream internal structure 1340-2 has the same configuration as the portion of the square pillar 1342 of the upstream internal structure 1340-1 and has the same function, but the square pillar of the internal structure 1340-1. The 1342 and the internal structure 1340-2 may be relatively rotated so as to be connected to each other. For example, the internal structure 1340-2 is rotated by 90 degrees and connected to each other. By such rotation and connection, the fluid to which the individual flow characteristics are imparted on the four sides 1342 of the upstream internal structure 1340-1 is another plurality of the downstream internal structure 1340-2. It is mixed and supplied to the side surface of the above, resulting in a more complicated fluid flow, which has a greater effect on imparting flow characteristics. The storage body 1330 shown in FIG. 16 and the plurality of internal structures 1340-1 and 1340-2 have elastic properties, so that they can be elastically deformed or flexed and deformed as a whole, and are flexible hoses. It can also be connected to or installed inside a hose. A pyramid (square pyramid in the case of FIG. 16) is integrally provided on the downstream side of the most downstream internal structure (internal structure 1340-2 in FIG. 16) to guide the fluid to the center. (The fact that the fluid can be guided by providing a pyramid at the downstream end is the same as in other configuration examples). It should be noted that only the internal structures 1340-1 and 1340-2 can be stored in the storage body 1330 which is made of an elastic material and has a bent shape and does not have elastic force.

Then, for example, the electrostatic flocking process shown in FIG. 3 is performed on the surfaces of all or a part of the upstream internal structure 1340-1, the connecting portion 1350, and the downstream internal structure 1340-2. Also in this case, a resin pile corresponding to the material of the internal structures 1340-1 and 1340-2 is flocked. Also in this embodiment, the generation of fine bubbles is changed by flocking all or at least a part of the internal structure 1340-1, the connecting portion 1350, and 1340-2. For example, as the concentration of fine bubbles increases, the effect of the fluid increases.

As an example of another fluid characteristic changing element S, in the fluid characteristic imparting portion of the internal structure, a large number of protrusions are arranged on the outer peripheral surface of the shaft member, the fluid repeatedly collides, and the fluid is agitated / diffused or sheared. It suffices if a flow path (or a cross flow path) is provided, and the shape and the shape of the protrusion are not limited to those having a substantially rhombic shape when viewed on a plane. For example, it may be an aerofoil type (airfoil type) as in Patent Document 3. Further, as in Patent Document 4, the internal structure may be a structure in which a plurality (many) of disc-shaped elements having notches (notches) formed and exposed by a shaft are connected. The internal structure can be variously deformed and changed in this way. Then, the generation of fine bubbles is changed by flocking a pile such as metal or resin on the surface of the entire or at least a part of the internal structure. For example, as the concentration of fine bubbles increases, the effect of the fluid increases.

As a further improved example of the present invention, the entire surface thereof or at least a part thereof is flocked with a pile such as metal or resin, and the inner wall surface of the storage body itself for accommodating the internal structure is flocked. .. In FIG. 17, the downstream tapered portion 37 of the outflow side member 34 of the storage body 30 shown in FIGS. 4 and 5 (also in the case of FIGS. 13 and 14) is flocked (30Pi in the figure is, for example, metal. Pile Pi indicates a flocked surface that has been flocked). That is, a part (most downstream) of the inner wall of the storage body 30 is flocked (the flocking process is not limited to the method shown in FIG. 3). In this way, with respect to the fluid output via the internal structure 20 (or 140), the generated fine bubbles can be sustained, or additional fine bubbles can be generated.
The inner wall surface of the storage body to be flocked is not limited to the position shown in FIG. 17, and may cover almost the entire inner wall of the storage body 30 as shown in FIG. 18 (30Pi in the figure is the flocking surface). be).
In addition, in the case of the configuration example of FIG. 15 or 16, the resin pile Pi may be flocked on a part or all of the inner wall surface of the hose-shaped storage bodies 1230 and 1330.

Although the present invention has been described above by using a plurality of embodiments, the present invention is not limited to such embodiments. A person having ordinary knowledge in the technical field to which the present invention belongs can derive many modifications and other embodiments of the present invention from the above description and related drawings. Although a plurality of specific terms are used in the present specification, they are used in a general sense only for the purpose of explanation and not for the purpose of limiting the invention. Various modifications are possible within the scope of the attached claims and the general concept and idea of the invention defined by their equivalents.

10, 100, 1200, 1300 Fluid supply pipe 20, 140, 1240, 1340-1, 1344-2 Internal structure 300 Fluid supply system 400, 500, 600 Target equipment 501 Heat exchanger 30Pi Flocked surface
S Fluid characteristic changing element E +, E- Electrode plate V DC high voltage Pi pile

Claims (21)

In a fluid characteristic changing element that changes the fluid characteristics by passing through a flow path composed of a housing and an internal structure.
At least part of the surface of the internal structure has been flocked,
A fluid characteristic changing element characterized by this. The fluid characteristic changing element according to claim 1, wherein the flocking process is performed by electrostatically flocking a large number of piles. The fluid change characteristic element according to claim 2, wherein the internal structure is made of metal and the pile is also made of metal. The fluid change characteristic element according to claim 2, wherein the internal structure is made of resin and the pile is also made of resin. The fluid property changing element according to claim 4, wherein the resin internal structure has an elastic force. The fluid characteristic changing element according to claim 1, wherein both the accommodating body and the internal structure are made of a resin having an elastic force. The fluid characteristic changing element is characterized by being an element that realizes at least one function of generating fine bubbles with respect to the feed fluid, mixing a plurality of fluids, and stirring / diffusing or shearing the feed fluid. The fluid characteristic changing element according to claim 1. The fluid characteristic change element according to claim 7, wherein the fluid characteristic change element increases the amount of ultrafine bubbles generated with respect to the supplied fluid by flocking the surface of the internal structure. element. The internal structure is
It has a diffusion portion and a flow characteristic imparting portion on a common shaft member.
The diffusing part is pyramidal or dome-shaped, diffusing the fluid in a particular direction and
The flow characteristic imparting portion is provided with a large number of protrusions on the outer peripheral surface on the shaft member, and changes the fluid characteristics with respect to the fluid supplied from the diffusion portion.
The fluid characteristic changing element according to claim 1, wherein the surface of one or both of the diffusion portion and the fluid characteristic imparting portion is flocked. The internal structure is
A diffusion portion, a swirl generation portion, and a flow characteristic imparting portion are provided on a common shaft member.
The diffusing part is pyramidal or dome-shaped, diffusing the fluid in a particular direction and
The swirl generation part causes the fluid diffused by the diffusion part to generate a swirl flow.
The flow characteristic imparting portion is provided with a large number of protrusions on the outer peripheral surface on the shaft member, and changes the fluid characteristics with respect to the swirl flow fluid supplied from the swirl generation portion.
The fluid characteristic changing element according to claim 1, wherein the surface of the diffused portion, the swirl generating portion, and the fluid characteristic imparting portion is entirely or at least a part thereof is flocked. The internal structure is
A diffusion portion, a swirl generation portion, a flow characteristic imparting portion, and an induction portion are provided on a common shaft member.
The diffusing part is pyramidal or dome-shaped, diffusing the fluid in a particular direction and
The swirl generation part causes the fluid diffused by the diffusion part to generate a swirl flow.
The flow characteristic imparting portion is provided with a large number of protrusions on the outer peripheral surface on the shaft member, and changes the fluid characteristics with respect to the swirl flow fluid supplied from the swirl generation portion.
The guiding portion is a cone system or a dome shape, and is formed by guiding the fluid from the fluid property imparting portion in a certain direction.
The fluid characteristic changing element according to claim 1, wherein the surface of the diffusion portion, the swirl generation portion, the fluid characteristic imparting portion and the induction portion is entirely or at least a part of the surface is flocked. The internal structure is
It has a diffusion portion and a flow characteristic imparting portion on a common shaft member.
The diffusion part is pyramidal and diffuses the fluid in a specific direction.
The fluid characteristic imparting portion is a prismatic column having a plurality of side surfaces, and a large number of protrusions are provided on the outer peripheral surface of the shaft member, and the height of the upper surface of the plurality of protrusions provided on each side surface is the storage body. As a whole, the center is high and the center is low toward the outside according to the arc of the inner wall surface of the inside, and the characteristics of the fluid by passing the fluid supplied from the diffusion part through the flow path between the plurality of protrusions. Be changed,
The fluid characteristic changing element according to claim 9, wherein the surface of one or both of the diffusion portion and the fluid characteristic imparting portion is flocked. There are two flow paths formed between the plurality of protrusions, one is a flow path from diagonally left upstream to diagonally downstream right from upstream to downstream, and the other is a flow path from diagonally upstream right to diagonally downstream left. The fluid characteristic changing element according to claim 12, wherein the flow paths are crossed flow paths where the flow paths intersect, and the fluid flows at the same speed with respect to the two flow paths. The fluid characteristic changing element according to claim 12, wherein the bottom surface shape of the protrusion is a rhombus, and the two vertices of the acute angles of the rhombus are parallel to the length direction of the axis of the internal structure. The change in fluid characteristics according to claim 12, wherein the shape of the bottom surface of the protrusion is a rhombus, and the two vertices of the acute angles of the rhombus are slightly inclined with respect to the length direction of the axis of the internal structure. element. The fluid characteristic changing element according to any one of claims 1 to 15.
The supplied fluid is supplied with the fluid after the characteristic change through the fluid characteristic changing element, and consists of a utilization device that utilizes the fluid.
Fluid system. The fluid system according to claim 16, wherein the utilization device is a device that utilizes the fluid after the characteristic change supplied through the fluid characteristic changing element. The device used is a heat exchange device, and the heat quantity of the fluid from the fluid characteristic changing element is exchanged with the heat quantity of the fluid flowing from the target device, and the fluid characteristic changing element is exchanged via the chiller. The fluid system according to claim 16, wherein the fluid is circulated. The utilization device is a device for cleaning and / or cooling, and is characterized in that a fluid containing fine bubbles is supplied from a fluid characteristic changing element, and the fluid recovered from the device circulates through a filter. 16 fluid systems. The fluid system according to claim 17, wherein the utilization device is a device that feeds back a part of the fluid after the characteristic change supplied through the fluid characteristic changing element and uses it while circulating. The fluid characteristic changing element according to any one of claims 1 to 15, wherein at least a part of the inner wall surface of the accommodating body for accommodating the internal structure is flocked. ..

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