TW201018527A - Shower device with microbubble generating mechanism - Google Patents

Abstract

A shower device having a microbubble generating mechanism. The microbubble generating mechanism is provided with a collision member (22) projecting from the inner surface of a flow passage wall (25), and also with a gap forming section (23) formed in a flow passage (FP) so as to be opposed to the front end, with respect to the direction of the projection, of the collision member (22). A bypassing flow passage (251) is formed between the outer peripheral surface of the collision member (22) and the inner surface of the flow passage wall (25). A restriction gap (21G) is formed between the collision member (22) and the gap forming section (23). The restriction gap (21G) restricts flow of water so that the water flows through the restriction gap (21G) at a lower flow rate and a higher flow speed than when flowing through the water bypassing flow passage (251). Owing to the construction above, the microbubble generating mechanism can generate a sufficient amount of bubbles without using a complex air-liquid mixing mechanism and can break up bubbles into finer microbubbles with greatly enhanced effect. As a result, the microbubble generating mechanism can generate a large amount of bubbles, which are in a micro bubble region or a micro-nano bubble region, at a level which has not been achieved by conventional products.

Description

201018527 VI. Description of the Invention: [Technical Field to Be Invented] The present invention relates to a microbubble generating mechanism. [Prior Art] Bubbles formed in water are classified into mini bubbles or microbubbles (even micro-nano bubbles and nano-bubbles, etc.) according to their sizes. The mini-bubble is a huge bubble of a certain degree of enthalpy, which rises rapidly in the water and finally ruptures on the surface of the water and disappears. In this case, the bubbles having a diameter of 50/zm or less are fine bubbles, have a long residence time in water, and have excellent gas solubility, so that they are reduced in water, and the special properties of being eliminated (completely dissolved) in water are called In the present specification, the "fine bubble" refers to a micronoid bubble having a smaller diameter (a diameter of 1 Onm or more and less than 1 " m ) in addition to the above microbubbles. And the concept of nanobubbles (less than 1 in diameter) Φ In recent years, such fine bubbles have been applied to various applications, such as a device for generating fine bubbles, such as a bubble water jetting portion for a bath and a shower head. There are various prior art (patent literature). The microbubble generating mechanism disclosed in the patent documents generates a wing by supplying a water flow to a swirling flow, and the vortex formed by the wing is drawn into a negative pressure from a pore formed in the shaft portion of the wing body. The external air that is attracted is mixed by gas-liquid (the patent document is called a two-phase flow cycle method), and is different from the extrusion mechanism that supplies the flowing water to the rib tube or the like, so that the pressing mechanism is high. When the flow rate is increased, the hole 201018327 (cavitation) in which the fine bubbles dissolved in the air are deposited by the decompression effect by the principle of the use of the nunoulli principle (Patent Documents 2 to 5). Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. Bulletin Non-Patent Document 1: Internet Homepage (http://unit.aist.go.jp/emtech-ri/26env-fluid/tak ahashi. pdf#search=' v 夕口a 7', 爪杉j : y 10 / a 7, child (c) δ study ') [Explanation] [Problems to be solved by the invention] However, in the above-described conventional fine bubble generating mechanism, the degree of miniaturization of any type of bubble Insufficient, the amount of generation of microbubbles having a long residence time in water is particularly problematic in that the microbubbles having a particle diameter of less than 1 m and the amount of bubbles generated in the nanobubble region are insufficient. Further, the two-phase flow represented by the patent document The way of the cycle is due to the use of swirling backflow to create a wing's mechanical complex On the other hand, the microbubble generating mechanism of Patent Documents 2 to 4 using the hole type adopts a closed squeezing hole around the ribbed tube and the orifice, and the position of the squeezing hole is due to the other flow path portion. The structure does not exist, the fluid impedance when the extrusion hole passes, cannot be increased to the desired flow rate, and in the 201018527 pressure hole, it is easily subjected to back pressure from the inner wall surface of the hole, and the hole (decompression) The effect is not sufficient, and the amount of bubble deposition is likely to be insufficient. Further, it is desirable that the air bubbles deposited in the water flow after the pressing mechanism are pulverized to be finer, and it is not expected that only the vortex flow due to the opening and turbulent flow of the water flow itself through the pressing mechanism will occur, and the degree of refinement of the air bubbles will also occur. There are insufficient problems.

An object of the present invention is to provide a microbubble generating mechanism capable of generating a sufficient amount of air bubbles without using a complicated gas-liquid mixing mechanism, and capable of greatly improving the effect of refining bubbles in a microbubble or micronized bubble region. The amount of bubble generation can be increased to the extent that is not possible with conventional techniques. [Means for Solving the Problems and Effect of the Invention] In order to solve the above problems, the microbubble generating mechanism of the present invention includes: a hollow flow path forming member having a water inflow port and a water outflow port, and forming a water flow population toward the water inside a flow path that flows out σ; an impact member 'from the inside of the flow path wall portion of the flow path forming member; and a gap forming portion 'in the flow path that faces the leading end portion of the protruding member in the protruding direction" A water flow returning portion is formed between the outer peripheral surface of the member and the inner surface of the flow path wall portion, and a flow of the squeeze water is formed between the conflicting member and the p-forming portion to generate a flow rate lower than the water-returning portion. The squeezing of the water flow at the flow rate, the gap in which the bubble is deposited by the negative pressure generated by the squeezing gap is impacted by the water flow on the impact side = the left side of the water flow $ return flow, and the person descending toward the impact member downstream & Entering to pulverize the above-mentioned precipitated bubbles into fine bubbles. According to the above configuration of the present invention, the impact member is designed to protrude from the inside of the flow path wall formed by the flow path, and a gap forming portion facing the front end portion of the impact member in the protruding direction of the 5201018527 is provided in the flow path. Then, while forming a dam returning portion between the outer peripheral surface of the impact member and the inner surface of the flow path wall portion, a pressing gap is formed between the impact member and the squeezing gap forming portion, and is pressed by the sluice returning portion. The water flows to form a low flow, high flow rate water stream. When the supply water flows to the fine bubble generating mechanism of this configuration, the water flow is increased by the pressing of the pressing gap. The high-speed water flow passing through the gap is released from the gap outlet, and a negative pressure region is formed on the gap and the downstream side thereof according to the principle of the Canunoli, and the dissolved air in the water flow is precipitated by the hole (decompression) effect to generate bubbles. The air bubbles in the water are different from the solid particles, and the air bubbles are easily collided with each other. For example, the swirling flow generated by the swirling flow in Patent Document 1 generates a slight thirst flow, and the mutual impact accuracy of the bubbles increases, and the pulverized body easily enters the fine bubbles. Further, since the speed of the water passing through the well-known pressing mechanism such as the venturi is not fast enough, the degree of decompression on the downstream side of the pressing hole becomes small, and the degree of eddy current generation also becomes small. As a result, the amount of bubbles generated by the holes is reduced, and the impact of the bubble generation is insufficient, so that sufficient fine bubbles cannot be formed. However, in the present invention, there is a conventional structure of a flow path portion other than the extrusion hole of the venturi and the orifice, etc., and a pressing gap is formed between the impact member forming the extrusion hole and the flow path wall portion. The water flow relocation portion is formed so that the water flow impinging on the collision member is relocated, so that the fluid resistance is not increased in the production passage when passing through the gap. As a result, the pressure relief gap passes through the high-speed water flow which is faster than the prior art. Thereby, the effect of the 'squeezing gap and the hole (reduction) downstream thereof can be greatly improved, and a larger amount of bubbles can be precipitated in the water stream having the same dissolved air concentration (and 'the water is 1 λ air pressure, under the condition of grasping Saturated 201018527 The dissolved oxygen amount is 8.llmg/L (about 8ppm). If the nitrogen is also considered to be dissolved, the dissolved air amount of the big sputum is about 30ppm). Further, a large number of minute eddy currents are formed in the entire three-dimensional negative pressure region formed by expanding the wide-angle of the vertical body by the speed of the passage of the squeezing gap. Further, the flow of water that has hit the impact member and passed through the water return passage portion is swirled on the downstream side of the impact member, and the turbulent flow excited by the larger flow rate is superposed and flows into the above-mentioned negative pressure region. The flow gap of the extrusion gap containing the precipitated bubbles is caused by the turbulent flow of the two systems to stir the three-dimensional flow while randomly stirring, and the plurality of small eddy currents surrounding the precipitated bubbles respectively introduce the bubbles into themselves. The fine pulverization of the bubbles is effectively performed, and it is easy to obtain fine bubbles having a small concentration and a small particle diameter. The bubbles are surrounded by a gas-liquid interface, and the surface tension of the water acts on the interface. Since the surface tension acts to shrink the surface and has a bubble of the situation interface, the surface tension acts as a force for compressing the internal gas. Since the gas is dissolved in water according to Henry's law, the gas body in the bubble which is itself pressurized can be more effectively dissolved in water. Since tiny bubbles, especially microbubbles or micro-nano bubbles, shrink in water, a very large pressure is generated at the moment of destruction. Further, the bubbles have ions which are dissolved in water and accumulate in the gas-liquid interface, and the concentrated ions narrow the bubbles and concentrate. As a result, the fine gas/package in the water becomes a state in which the interface charge density is very high. The cluster structure of water (hydrogen junction «net) is composed of water as sub-HaO and several h+ and 〇H produced by electrolysis of water molecules. However, the interface structure of bubbles has an easy to collect H+ or 0H- The volume of the ion becomes higher than that of the ion, and as a result, the bubble is charged to the surface of the 2010. Further, since this tendency is strong against 0 ir, the bubble interface tends to be negatively charged under normal Qi conditions. By the bubble charging, in the case where fine bubbles are generated at a high concentration, the reaction force of the electrostatic property interacts with the bubbles, and the bubbles are combined to cause coarsening and a decrease in the bubble concentration. Further, it is expected that an effect of attracting the surface to the surface by electrostatic attraction, such as a dyed substance or a metal ion, and an effect on the activation physiology of a living body (e.g., a human body) that is in contact with the fine bubble are found. Further, it is easy to generate a free radical from the fine bubbles, and in particular, a radical such as a free hydroxyl group is a highly reactive substance, and can be effectively used for decomposition and sterilization of dirt. Hereinafter, various requirements of the structure of the fine bubble generating mechanism attached to the present invention will be described. First, the otter return path portion may be formed only on one side of the protruding direction of the impact member viewed from the water flow direction in the flow path, but the right side is formed in the flow path from the water flow direction to the impact. The both sides of the protruding direction of the member are directed toward the negative pressure region on the downstream side of the bubble deposition, and the turbulent flow which is rotated from both sides of the impact member merges and the bubble pulverization effect can be further improved', and the fine bubble can be efficiently generated, X, It is advantageous to obtain finer bubbles of finer diameter. Between the water inlet and the microbubble generating mechanism, a preparatory squeezing mechanism is provided to increase the speed of the water flow from the water flow population to guide the microbubble generating mechanism. By providing this preparation pressing mechanism, the extrusion gap and the flow velocity around it can be further increased. The bubbles can be made finer and more concentrated. Then, a decompression cavity is formed in at least the meandering surface of each of the opposing faces of the impact member and the gap forming portion where the pressing gap is formed. Ρρ, the decompression cavity formed on the surface of the slamming member to the 201018527 gap forming portion facing the squeezing gap has a function as a stagnation space for reducing the flow velocity. Therefore, the difference in the flow velocity inside the squeezing gap is expanded, which is remarkable Improve the effect of holes (decompression) generated by the principle of the Cannoli. As a result, the increase in the amount of bubbles generated by the dissolved air in the water flow can increase the degree of the fine bubbles in the water flow. From the viewpoint of sufficiently securing the negative pressure region, the opening diameter of the decompression cavity is preferably 1 mm or more, and the depth is preferably larger than the opening diameter. Further, if the pressure is reduced/resonated in the water flow, the "sound resonance" is generated by the resonance, and the bubbles and the resonance vibration are promoted to promote the bubble pulverization. In the case of forming a cylindrical decompression cavity, the opening diameter is less than i〇mm (preferably less than 4 mm) from the viewpoint that the band of the resonance wave is an ultrasonic band (100 kHz or more). The diameters are equal or larger than the opening diameter (preferably about an integer multiple of the opening diameter). Then, the impact member and the gap forming portion are formed to press one of the opposing faces to v, and the hanging slope of the hanging star gradually decreases from the upstream side toward the downstream side on the water inflow side. Thereby, since the opposing intervals of the broadcast gaps are continuously reduced from the entrance of the extrusion gap toward the depth of the gap, the water flow can be smoothly squeezed deep in the gap, and the flow loss when passing through the gap can be reduced. Ancient, force, and ancient are from the same flow rate. Further, the respective phases of the pressing gaps of the impact member and the gap forming portion are formed into the (four) gap from the upper side... One of them is formed on the water outflow side. The extruded inclined surface which gradually enlarges toward the downstream side also forms a water flow peeling uneven portion on the inner surface of the flow path of the balance member (or the outer periphery of the rear portion and the door flushing member). By the above-described water flow 9 201018527, the uneven portion is formed on the outer peripheral surface of the member, and the water flowing upward in the center axial direction of the flow path is likely to cause peeling of the water flow when the water flow is peeled off the uneven portion, thereby promoting the water picking anvil. The turbulent flow is formed by the water flow stripping concave and convex portion; the thread of the outer peripheral surface of the protruding portion of the impact member in the gripping portion. The threaded thread has a constant inclination angle with respect to the imaginary plane normal to the axis of the impact member. When flowing in the impact member in parallel with the imaginary plane, when a plurality of threads inclined with respect to the water flow direction are returned and returned to the downstream side λ of the impact member, 'the flow of water passes from the valley side of one side toward the opposite valley side. In the case of the ridge line of the mountain, the water flow separation which contributes to the above-mentioned turbulence is particularly likely to occur. In the degree of generation of the fine bubbles, the squeezing gap and the leeches are adjusted to the respective sizes so that the pressure G is supplied. .2MPa (gauge pressure, same as the same) When supplying water to the water inlet, the maximum flow rate of the water flowing through the squeeze gap is 8m/sec or more (the upper limit is not limited, for The pressure 〇. 2Μρ& is the upper limit of the possible value, for example, 5〇m/sec.) The maximum negative pressure generated by the extrusion space is preferably 〇. 02MPa or more (the theoretical upper limit is 〇. 1 MPa) In particular, in the case where the above-described decompression cavity is formed, when the supply pressure of 0.2 MPa is supplied to the water inlet, the entire region of the decompression cavity is easily maintained at a negative pressure of 0.02 MPa or more. The entire region of the cavity is in this negative pressure state, and the negative pressure region adjacent to the downstream side of the impact member can be maintained in a negative pressure state of 〇. 2 MPa or more by screwing in turbulent flow. Further, the hole effect is remarkable. Further, when the supply pressure of the water supplied to the fine bubble generating mechanism is used, for example, directly in combination with the water channel, it is changed in the range of 〇 _ MPa to 〇 6 MPa. The upper limit of the supply force at this time is not particularly limited (for example, it may be approximately pa). The squeeze gap and the decompression space are negative pressures formed in the negative μ region below (4). Best grade summer ft疋ϋ 疋ϋ · 05 MPa or more. By generating this level of negative pressure ' not only can be dissolved in the phase of the struggle, the second gas can also make the local water boil and generate bubbles 'can increase the concentration of tiny bubbles that can be generated. In the negative pressure generating condition described above, when φ water is supplied to the water inlet at a supply pressure of 0.—a, in the case of the microbubble generating mechanism peculiar to the present invention, the fine bubbles included in the water jet ejected from the water outlet are provided. The number average particle diameter is under U). For example, in the case of using an impact member having a circular shaft section, when the water is supplied to the water inlet by the supply pressure, the adjustment has a circular shaft section. The outer diameter of the impact member and the flow cross-sectional area of the water-returning return portion are such that the Reynolds number of the impact member disposed in the water return flow path portion is 10 〇〇〇 or more. When the impact member of the cylindrical section is placed in the water flow, the spring material diameter of the impact member is D, the flow velocity is u, and the dynamic viscosity coefficient of the water is b. Therefore, the Reynolds number Re is

Re = UD/ ρ (number of times without cause (i) The water flow around the impact member of the cylindrical section becomes a turbulent flow when the Reynolds number k is 1500 or more, especially when Re 纟 or more, due to the turbulent flow of the screw Since the fine pulverization effect of the air bubbles is increased in a hopping manner, the particle diameter of the average number of bubbles is easily reduced to a value of 10" or less which is conventionally difficult to achieve. For example, if the circulation of the water returning portion is adjusted. If the average flow velocity is 8 m/sec or more in the case of the cross-sectional area, it is easy to ensure that the Reynolds number Re is above 1 000 by adjusting the outer member of the impact member of the 11 201018527 circular axis section to 1 to 5 off. The value, the value, effectively produces fine bubbles of an average particle diameter having an average value of 10 β m or less.

In particular, the flow break area of the water relocation to the road section is adjusted so that when the supply pressure is 0.5 and the temperature is 1 (the water of the ^ is supplied to the water inlet, the average is (4) adjusted to the above-mentioned impact with a circular axis section. The outer diameter of the member is 1 to 5 closed. The Reynolds number of the impact member disposed in the water return passage portion exceeds the value of 2 〇. Then, the maximum flow rate of the water flow in the spurt gap formed by the impact member is ❿/ In the case of seconds or more, the number average particle diameter of the fine bubbles contained in the jet stream can be reduced to a value of 1/m or less which cannot be achieved by conventional techniques, such as from I water (or well water) in which the electrolyte is not actively added (for example, ΙΟΟηιη is a value of 500 nm or less or more. That is, the microbubbles of the micro-nano-bubble region in the number average level can be easily produced without using a complicated and expensive bubble generating device. In particular, the bubble size is reduced: Since the area of the bubble interface is reduced by two digits, the charge density of the bubble interface is estimated to be 5 to 1 times higher than that of the bubble of the particle size of the number of "m", and the organism (human body or animal) described later can be used. body) The physiological activation effect is remarkable. Further, under the condition that the flow rate conditions are sufficient, the negative pressure level of the pressing gap and the decompression cavity or the downstream side negative pressure region can be increased to 0, 〇5 MPa or more, and the concentration of microbubbles can be generated. In the microbubble generating mechanism of the present invention, if the interval between the pressing gaps is reduced, the amount of water flowing into the weir returning passage portion is increased. Therefore, the passage of the pressing gap is increased. The flow rate is not excessively reduced, and the squeeze gap is reduced, and the minute bubbles generated in the press gap are transferred. 12 201018527 The effect of the turbulence caused by the turbulent flow is increased, and a finer diameter bubble can be generated. When the interval between the squeezing gaps is increased, the flow rate of the leeches in the sluice gap is increased, and the flow rate of the leeches in the total flow path section of the leeches can be increased (at this time, the set value of the gap interval is increased, although The flow velocity in the pressure gap tends to be insufficient, and it is advantageous in the case of ensuring that the injection flow rate is prioritized. Here, the microbubble generating mechanism of the present invention 'If the squeezing gap adjuster Φ structure that can change the interval of the squeezing gap is set, the interval of the squeezing gap is appropriately adjusted corresponding to the required level of the bubble diameter and the injection flow rate. In the case where the water pressure levels of the water passages are different, the injection flow rate can be appropriately adjusted by adjusting the interval of the pressing gaps. Next, a nozzle passage is formed in the impact member, and the impact member is penetrated in the protruding direction together with the flow path wall portion. One end side opens a gas discharge port toward the pressing gap on the front end side of the impact member, and the other end side penetrates the flow path wall to open a gas inlet port on the outside of the wall portion. Thereby, the water flowing in the squeeze gap is negative. The external air outside the flow path wall portion is sucked and supplied from the gas inlet port through the nozzle passage and supplied into the press gap. According to this configuration, the air bubble which is formed by the cavitation phenomenon and which is sucked from the nozzle path becomes air bubbles. It is mixed into the water stream' so that a higher concentration of tiny bubbles can be obtained. Further, the effect of the fine powder of the swirling turbulence caused by the leeches of the leeches is increased, and even if the bubbles taken in by the suction of the outside air are slightly thick, the pulverization of the fine bubbles can be sufficiently performed. At this time, the decompression cavity can be formed in at least one of the opposing faces forming the pressing gap with the impact member and the gap forming portion, and the nozzle passage formed in the impact member can be opened in the decompression cavity. Since the hole is decompressed 13 201018527: a particularly large negative pressure is generated. By increasing the amount of external air suction by opening the nozzle passage, the concentration of fine bubbles can be increased. Further, in the microbubble generating mechanism of the present invention, the sub-suction nozzle portion is formed to penetrate the flow path wall portion on the downstream side of the impact member. The sub-suction nozzle portion has a nozzle passage ′ at one end side in which a gas discharge port is opened in the flow path, and the other end side is provided with a gas inlet port on the outer surface of the wall portion, and a water flow generated in the flow path is negatively pressed to the outside of the flow path wall portion. The outside air is sucked from the gas inlet port through the nozzle passage, whereby the additional air bubbles having a larger particle diameter than the fine bubbles generated by the fine bubble generating means are introduced into the flow path from the gas discharge port. In the sub-suction nozzle portion, a nozzle passage is opened on the downstream side of the pressing gap, and the outside air is mixed with the water flow in a state where the flow rate is smaller than the flow velocity of the pressing gap. As a result, bubbles having a larger particle diameter than when the outside air is attracted or introduced into the pressing gap can be produced. In other words, it is easy to obtain a water flow in which two types of bubbles are formed between the fine bubbles generated in the pressing gap and the large diameter bubbles introduced from the sub-suction nozzle portion. In particular, the downstream side of the formation region of the swirling turbulence caused by the impact member is avoided, that is, the area directly under the impact member which is effective in avoiding the turbulent flow of the swirling flow (for example, the outer diameter of the section from the impact member) The sub-suction nozzle portion is provided on the downstream side thereof, and the excessive pulverization of the bubble introduced from the sub-suction nozzle portion is suppressed, and the size of the bubble introduced from the sub-suction nozzle portion is adjusted to, for example, the number average particle diameter. Above 10 0 " m (the upper limit is, for example, 1 or less). The sub-suction nozzle portion has a nozzle projecting portion that protrudes from the inner surface of the channel wall portion, and a gas discharge port can be formed at the tip end of the nozzle projecting portion in the projecting direction. The water flow impinges on the nozzle projection of the nozzle portion of the sub-suction spray 201018527 protruding from the inner surface of the flow path wall portion, thereby generating a thirsty flow or a turbulent flow on the downstream side of the nozzle projection portion, and pulverizing the bubble introduced into the water flow from the gas discharge port. . The microbubble generating mechanism of the present invention has, for example, a tubular main body casing and another tubular flow path forming member that is inserted into the main body casing and that is detachably inserted in the axial direction and that forms a flow path therein. A member and a gap forming portion may be formed in the flow path forming member. The above-mentioned nozzle passage or the sub-suction squirt having a nozzle passage is provided between the flow path forming member and the inner peripheral surface of the ship frame, and the liquid-tight portion is provided at both ends in the drawing direction. The sealing members of both are sealed. Then, in the axial direction, between the outer peripheral surface and the inner peripheral surface between the sealing members, an air intake port and a communicating air introduction gap penetrating through the wall portion of the main body casing can be formed. Further, when the flow path forming member is a resin molded crucible, the impact member is protruded from the flow path in the resin flow path wall portion of the flow path forming member, and the rear end side is larger than the inner surface of the main body frame. Further, the inner side is exposed on the outer peripheral surface of the flow path © forming member, and is disposed to penetrate the flow path wall portion. As before, the assembly of the conflicting member becomes easy for the flow path forming member. Since the impact member is attached to the shape of the flow path wall portion in the thickness direction, the impact member does not protrude beyond the outer peripheral surface of the flow path wall portion, and the outer side is concealed by the main body frame. Specifically, a male screw is formed on the outer circumferential surface of the balance member, and a female screw hole formed in the flow passage wall portion is inserted. Thereby, the pressing gap (4) can be adjusted corresponding to the amount of screwing of the impact member in the Z-threaded hole. Further, the male thread portion described above can of course be used as the water flow stripping portion. Then, the g-gap forming portion is formed as a counter-impacting member, and is formed on the opposite side of the impact member from the center of the cross-section of the flow path, and protrudes from the inner portion of the wall portion toward the impact member, and the gap is formed in the protruding direction of the impact member. The front end portion and the front end portion of the opposing impact member in the protruding direction. For example, the front end surface of the impact member may face the inner peripheral surface of the flow path wall portion to form a press gap, and in this case, the flow path wall portion and the opposing portion of the impact member form a gap forming portion. However, in this configuration, since the squeezing gap is located in the outer peripheral edge region $ of the flow path shaft section where the flow rate is lost, the flow velocity of the nip is also small. However, by providing the opposing impact members, the formation position of the squeezing gap is close to the center of the section having a large flow velocity, and the flow velocity of the squeezing gap is increased. The effect of the squatting phenomenon is improved, and the fine air bubbles can be more efficiently generated. Further, at least one of the impact member and the opposing impact member faces the front end portion of the above-described crushing gap to form a reduced diameter portion having a tapered side surface which is smaller toward the front end. By providing such a reduced diameter portion, the following effects can be achieved. • At the front end portion of the outer peripheral surface of the reduced diameter portion of the impact member to the opposing impact member, the impact return length of the water flow is shorter than the vicinity of the bottom end of the outer peripheral surface, and the flow velocity is increased. Further, the portion on the upstream side in the water flow direction of the outer peripheral surface of the reduced diameter portion forms the above-described extruded inclined surface. Thereby, the turbulent flow effect near the squeezing gap and the efficiency of the generation of the south microbubbles can be further improved. • With respect to the impact member and the opposing impact member, the impact of the water flow causes eddy currents and even turbulent flow, not only in the 201018527 plane orthogonal to its opposite direction, but also in the opposite direction to the opposite direction (ie, in the crush gap) The side passes over the direction of the reduced diameter portion), and the oxidized effect of the =>-dimensional is further improved. In the case of the X-phase facing impact member, the t or both of the impact member and the opposing impact ram are formed toward the gap toward the front end surface of the squeezing gap, and the direction of the gap is formed. Decompression cavity. In particular, a decompression cavity is formed in one of the impact member and the opposing impact member. On the other hand, when the configuration in which the front end portion is formed in the positional relationship toward the opening of the decompression cavity to form the reduced diameter portion 采用 is employed, the flow of the water in the nip can be greatly increased by the reduced diameter portion. Then, the water flow from the material velocity is connected to the stagnation portion in the waste reduction cavity, resulting in a large flow velocity difference. Further, when the diameter is reduced, the water flow is reversed in the form of a curved shape on the side of the decompression cavity, and the interval of the flow velocity difference is also increased (this effect is reduced in a part of the front end side of the reduced diameter portion). When the position of the cavity is pressed and the position is adjusted, it becomes remarkable.) Moreover, as will be described later, the resonance effect of the decompression cavity may be more remarkable by the formation of the reduced diameter portion. When the efficiency of generation of fine bubbles is increased, 'there is an effective contribution to the finer diameter of the bubble. Specifically, the edge region of the opening edge portion where the decompression cavity is formed on the front end surface of the impact member faces the tapered side surface of the reduced diameter portion so that the pressing gap has a wedge-shaped cross section and the outer peripheral side of the space is open to the water return flow. The annular gap peripheral space and the decompression cavity of the road portion communicate with each other via an annular thin waist gap portion formed at a position opposing the circumferential inner side of the opening of the decompression cavity and the circumferential side surface of the reduced diameter portion. Thereby, the portion of the outer peripheral surface of the reduced diameter portion located on both sides of the pressing gap centered on the water flow direction functions as the auxiliary gap. Therefore, the flow of water that has not passed through the squeezing gap generates a cavitation phenomenon when passing through the auxiliary gap 17 201018527, and the efficiency of generation of the fine bubbles is improved. Further, when the opposing impact member is provided, the leeches returning portion forms an open shape that spans the outer peripheral surface of the impact member and the outer peripheral surface of the opposing impact member, whereby both the impact member and the opposing impact member can be more precipitated. The micro-grinding effect of the bubbles. In addition, when the center of the gap interval in the water inflow side opening position of the squeezing gap is defined as the center of the gap, the distance from the center of the (four) (four) gap of the flow path wall portion is larger than the center of the section Small distance

In the range of 'the position at which the predetermined length is moved from the center of the section in the radial direction and the pressing gap is adjusted', the generation efficiency of the fine bubbles in the pressing gap can be improved. The outer side of the flow path forming member is covered by the main body frame, and the impact member and the opposite impact member are respectively (four) in the flow path wall portion of the tree-lined flow of the flow path forming member, the front end side protrudes in the flow path, and the rear end side is The inner side of the inner surface of the main frame clock is exposed on the outer peripheral surface of the flow path forming member, and is disposed so as

The form of the wall portion of the flow path is worn. Then, the 'opposite impact member' is configured to lock the female thread passing through the wall portion of the flow path while the outer peripheral surface is formed by the male thread. Thereby, the interval of the play gap is adjusted corresponding to the amount of screwing of the opposing impact members in the female thread. Further, the position of the pressing portion (four) of the adjustable (four) road breaking is formed by the impact member with the same threaded member (especially the offset of the radial direction from the center of the section). The male thread of the opposing impact member is also used to form the uneven portion by the above-described water flow. [Embodiment] 18 201018527 The following drawings have been described to explain the embodiments of the present invention. Fig. 1 is a view showing an example of a hot water circulation type bath unit in which the fine bubble generating mechanism of the present invention is incorporated. The hot water circulation type bath unit has a bath 3〇1 and a fine bubble generating mechanism 21. In the present embodiment, the fine bubble generating mechanism 21 is configured as a cylindrical bubble generating module (the appearance is not limited thereto), and is detachably attached to the module mounting portion 302 through the wall portion of the bath 301, and is formed in the module mounting portion 302. The water outlet of the front end opens to the inner surface of the bath. The fine bubble generating mechanism 21 is connected to the outflow side of the pump 313 via the pipe 311, the pressurizing dissolution tank 31, and the pipe 312. On the other hand, the outflow port 303 is formed in the bath 3〇1, and is connected to the inflow side of the pump 313 via the pipe 314. When the pump 313 is actuated, the hot water in the bath 301 is sucked out through the pipe 314, and sent to the pressurizing dissolution tank 31 through the pipe 312. When the hot water WA passes through the suction device 315 provided in the pipe 312, the external air is taken in a form of suction under reduced pressure, and is pumped into the pressure dissolution tank 31 to perform gas-liquid mixing to increase the concentration of the dissolved air. . Further, the pressure of the pressure in the pressure-dissolving tank 31 is corresponding to the pressure regulating valve 316 (or the pump flow rate) on the outlet side, and is adjusted within a range of, for example, approximately 1515 MPa to iMPa (gauge pressure, the same applies hereinafter). . The heat #WA having a high dissolved air concentration generates fine bubbles BM when passing through the fine bubble generating mechanism, and is ejected as a water flow wj in the bath 3Q1. Further, in the cold tank 301, the warm water supply pipe, the combustion pipe, and the like are added to the piping system in the general design of the bathtub. However, since all of the pipings are known, the description thereof will be omitted. Fig. 2 is a view showing the internal structure of the fine bubble generating mechanism 21 in detail. 19 201018527 The microbubble generating mechanism 21 includes a water inflow port 31 and a water outflow port, and an impact member 22 that protrudes from the inner surface of the channel wall portion 25 of the channel forming member 2A and a tip end in the flow path 1 and the protruding direction of the impact member 22 The gap forming portion 23 facing each other. As shown in Fig. 5, in the microbubble generating device 21, a weir reflow portion 251 is formed between the outer peripheral surface of the impact member 22 and the inner surface of the flow path wall portion 25. Further, a pressing gap 21G is formed between the impact member 22 and the pressing gap forming portion 23, and the water flow is squeezed to form a water flow having a lower flow rate and a higher flow velocity than the water dam returning portion 251.

When the water retention flow path FP is supplied from the water inlet 31, as shown in the 14th (b, C) diagram, the water flow negative pressure is generated in the extrusion gap 21G, and the dissolved air is precipitated by the hole effect, and the water flow WF is passed through the gap. Bubble BM is generated. On the other hand, in Fig. 5, not all of the water flow is supplied to the squeezing gap, and a considerable portion of the impact member 22 is impacted toward the dam returning portion 251 side. As shown in Fig. 15A, the meandering water flow produces a plurality of three-dimensional small eddy currents while simultaneously forming a swirling turbulent flow CF that is screwed into the downstream side of the impact member 22. shape

The precipitated bubbles BM which are formed in the gap by the water flow WF are entangled in the swirling flow and pulverized into fine bubbles. The following is a more detailed explanation. As shown in Fig. 2, the microbubble generating mechanism 21 has a cylindrical main body casing 1 formed of a resin molded body having both ends open, and is detachably inserted into the axial direction from the opening in the main body casing, and the inside is A flow path forming member 2A formed of a separate cylindrical resin molded body of the flow path Fp. As shown in Figs. 5 and 5, the gap forming portion 23 is formed on the opposite side of the impact member 22 from the center of the cross-section of the flow path center Fp, and faces the impact member 22 from the inner surface of the wall portion.

The impact member (hereinafter also referred to as the opposing impact member 23) has a pressing gap 21G shape between the front end portion of the impact member 22 in the protruding direction and the front end portion of the opposing impact member 犬 in the dog exit direction.

The inner peripheral surface of the flow path forming member 2A has a flow path main body 26 that is a front end side (water outlet side) when the cylindrical P is formed in the main body casing 10, and is fitted to the main body casing 1〇. The fitting bottom end portion 27 of the inner peripheral surface of the opening of the water inflow side has a smaller connection than the flow path main portion = == the connecting path main body portion 26 and the fitting bottom end portion 成为 are connected to the flow path I 25 The part (hereinafter referred to as the connecting portion 25). As shown in Fig. 4, the front portion of the impact member 22 and the opposing impact member 23 == path..., and the rear end side of the main body frame "exposes the outer circumference of the flow path forming member 20 to penetrate the connection In the form of the portion 25, a sealing structure m 275 is provided between the flow path forming member 20 and the main body frame 10, and the liquid crystal sealing member is provided at both positions in the axial direction. In the flow path main body portion, the front end portion of the outer peripheral surface of the 9β1 is formed in a ring shape, and the male seal groove formed in the circumferential direction of the front end surface of the seal flange 261 is smashed with a rubber pen α such as rubber. The first sealing member (o-ring) 262. On the other hand, the rear crotch portion of the fitting bottom end portion 979. 7 also forms an annular sealing flange 272, which is embedded along the front sealing groove of the sealing flange 272. A dense tea seal member (a ring-shaped ring) 275 formed in the axial direction of the rubber is joined. As shown in Fig. 3, the main body frame 1 is opened at the rear end of the female thread portion 10u, and the edge m is formed on the other hand. The member 20 is formed on the outer peripheral surface of the flow path forming member 戟-forming male thread portion 27t, the flow path .../bottom end #27 from the rear end side The main body frame 21 201018527 is internally screwed to the female screw portion 1 ()u, whereby the first sealing member 262 attached to the flow path main portion 26 is crimped to the rear end surface of the bearing flange 1〇5, and is mounted on The second sealing member 275 of the fitting bottom end portion 27 is pressed against the rear end surface of the body surface 10B to form a sealed state.

A connecting male thread 27 is formed on the outer peripheral surface of the sealing flange 272 on the rear end side of the fitting bottom end portion 27 of the flow path forming member 20, and a snap ring 273 is fitted to the bottom end. Further, a female screw portion 278u for connection is formed on the inner peripheral surface of the distal end side of the bearing flange 1? 5 of the main body casing 1 (), and a G-shaped ring 279 is fitted to the inner periphery of the bottom surface thereof. The connection male thread portion m and the connection female screw portion 278u form a flow path connecting portion for connecting the flow (4) through which the microbubbles are to be introduced to the fine bubble generating mechanism 21, such as a pipe, a pipe, a crucible, or a nozzle. Various flow path forming members are connected by screwing. Further, the flow path connecting portion may be a male thread portion at both ends, or both ends may be a female thread portion. Moreover, the circulation path connecting portion

The threaded portion is not limited to a known various pipe connection structure such as a pusher connector as long as the necessary withstand voltage can be secured. In the first embodiment, the microbubble generating mechanism 21 is attached to the module mounting portion 3〇2 side (the female screw hole) of the connection female screw portion 278U on the bathing groove 301 side. The male screw portion at the end is locked to the connection portion 278u of the microbubble generator (4) shown in Fig. 2 and attached. Threading, as shown in Fig. 2, is provided between the water inlet 31 and the fine bubble generating mechanism 21, and a preparatory pressing mechanism 30 for introducing the water flow velocity from the water flow population 31 into the fine bubble generating mechanism 21 is provided ( See also Figure 3). 22 201018527 Specifically, the preparatory pressing mechanism 30 has a cylindrical introduction portion 31A that forms the water inflow port 3, and a small diameter portion 32 that is connected in a stepped shape in the form of a stepped shape on the downstream side of the introduction portion 31A. In the present embodiment, the preparatory press mechanism 30 is formed as a cylindrical resin molded member, and is fitted to the fitting bottom end portion 27 which is formed concentrically on the rear end of the flow path forming member 2A. On the receiving recess 271. Moreover, the fitting bottom end portion 27

The valley recess 271 and the outer peripheral surface of the preparation pressing mechanism 3 are sealed by a rubber-shaped beak ring 311. As shown in Fig. 4, the inner diameter of the small diameter portion 32 is set to be smaller than the inner diameter of the connecting portion 25 of the flow path forming member 20 (on which the fine bubble generating mechanism 21 is attached) (for example, the inner diameter of the connecting portion 25) For d, the inner diameter of the small diameter portion 32 is ±{(de_dl)/(the value of Mxl〇〇(%)=5~5〇%). The water flow squeezed by the contraction portion 32 is in the flow At the connection portion & side, the influence of the turbulent flow (i.e., the flow rate reduction) caused by the flow path expansion is not too large for the microbubble generating mechanism gap 21G, and the flow direction is propagated under the condition of the W 21G. Position (position of the central axis p of the impact member 22) The distance α of the rear end position of the portion 32 is set to be larger than the inner portion of the connecting portion (best, ... is lower). Moreover, the fitting of the forming member 2G of Fig. 4 The rear end surface of the bottom end portion 27 is in the direction of the punch 2 = the arc-shaped cross section of the slit 276, and the impact member 22 and the phase and the structure of the cow 23 are added here, and the distance is reduced. "The following is for the fine bubble. And the detailed structure described in Fig. 5 is formed by a threaded member of the fourth figure (the β member and the opposing impact member 23 are both gold and not recorded). In the outer peripheral surface of the striking member 22, a male screw portion 22t is formed in the punch 23, and the lock is inserted into the female screw hole 22u formed through the connecting portion (flow path wall portion) 25. The female screw hole is locked corresponding to the impact member 22. The distance between the pressing gaps 21G is adjusted by the amount of 22u. Further, the male screw 23t is also formed on the outer peripheral surface of the opposing impact member 23, and is locked in the female screw formed through the connecting portion (flow path wall portion) 25. The hole 23u corresponds to the amount by which the opposing impact member 23 is locked in the female screw hole 23u, and the interval of the pressing gap 21G is adjusted. The above-described "squeeze gap adjustment which can be adjusted by changing the interval of the hanging pressure gap 2 ^ G mechanism.

As shown in Fig. 2, the impact member 22 and the opposing impact member 23 are disposed so as to pass through the wall portion (flow path wall portion) of the connecting portion 25, and the main body frame 1 is concealed, and the front end side thereof is With respect to the wall of the connecting portion 25, the rear end side of the dog outlet flow path FP $ ' exposes the flow and the outer peripheral surface of the forming member 20 on the inner side of the body casing. "Anchor" is the same as the opposing impact member 23: When the screwing is performed, the position of the extrusion 丨 21G in which the flow path of the connecting portion 25 is formed is interrupted.

The precession of the piece, which protrudes from the remote post 9ς In order to easily adjust 1 to the crying of the heads of the punching members 23 outside the connecting portion 25, Qiu, 22, and 22, respectively, form a snap-fit hexagon The tools of the hand έ eight are engaged with the holes 222, 232. Further, when the interval between the pressure gaps is adjusted and the position is adjusted, the structure of the connecting member 23 is not able to be screwed into the connecting portion (flow path wall portion) 2 and the phase is not integrated, and the structure is formed by insert molding. . Moreover, the impact member 22 of the impact member 23 is splayed with the shank. Screw-in operation 'Other-cannot rotate and then solidate 24 201018527 Next, as shown in Fig. 5, in the punching m ?) c ^ - μ, on the 搫 member 22, facing the squeezing interval t "the leading gap is formed on the end face" The dust-reducing cavity forming the direction is formed on the opposite-impacting member 23, and the front end thereof faces the opening position of the reduction hole 221 to form the reduced-diameter portion 23k (but a decompression cavity can be formed on the opposing impact member) on the impact member 22 The reduced diameter portion can be formed. The reduced diameter portion of the eye impact member 23 has a shape that is smaller toward the front end than the straight shape = 231: specifically, the conical surface is located in the conical extrusion; The portion on the inflow side (flow upstream side) constituting the interval in which the interval between the two intervals is gradually reduced from the upstream side to the downstream side, and the portion of the squeeze flow V located on the water outflow side (the downstream side of the flow) constitutes the interval of the extruded surface: G The enlarged oblique impact member 22 gradually expanding from the upstream side to the downstream side is concentrically arranged with the opposing impact member 23. The inner peripheral surface of the member 22 having a positional relationship concentric with the outer peripheral surface of the impact member 22 is recorded. Figure 6 shows the impact of the cow 2 In the cross section of the central axis of the second portion, the distance between the inner edge of the opening of the decompression hole 221 and the outer peripheral surface of the reduced diameter portion of the opposing impact member 23 is the gap = the interval d is set to the inner diameter d3 of the decompression cavity 221 In the present embodiment, the inner diameter of the reduced-cavity hole 22i is greater than the upper limit of the adjustable gap flow interval interval 1. Further, the depth Η of the cavity 221 is set to The value of the inner diameter d3 is 0.5 to 5 times, preferably 4 times. Further, in Fig. 6, the position of the reduced diameter portion is adjusted to the position of the line direction, so that a part of the front end portion enters the inside of the decompression cavity. As shown in Fig. 5, the pressing gap is called the edge portion 224 which becomes the opening edge of the decompression hole 221 at the front end of the impact member 22, and the tapered side surface 231 of the reduced diameter portion 23k. An annular gap edge space 251n having a cross-section is formed in the opposite direction. The outer peripheral side of the gap edge space is open to the dam return portion 251, and the inner edge and the reduced diameter of the opening of the burger hole 221 are formed. An annular thin waist gap portion 2in is formed at a position facing the circumferential side of the portion 23k. A structure in which the decompression hole 221 communicates with each other. The water returning flow path portion 251 is formed on both sides of the protruding direction of the impact member 22 in the flow path FP from the water flow direction, and is formed to span the outer peripheral surface of the impact member 22 and the opposing impact member, respectively. The outer peripheral surface of 23. As shown in Fig. 6, the center position of the gap interval in the water inflow side opening position of the squeezing gap 21G is defined as the gap center Q, in the direction of the section radius of the flow path FP, The distance 7 from the inner surface of the flow path wall portion to the center of the gap ? is adjusted within a range not less than the distance from the center of the section to the center q of the gap, and the center q of the gap is adjusted from the center of the section to the radial direction. The formation position of the pressing gap 21G. Returning to Fig. 4, on the downstream side of the impact member 22, a sub-suction nozzle portion 24 is provided on the connecting portion. The sub-suction nozzle portion 24 has a nozzle passage 241 and a nozzle passage 241 in the flow path Fp at one end side, and a gas inlet port 241e is formed on the outer surface side of the wall portion at the other end side. As shown in Fig. 4, when the water flow negative pressure is generated in the flow path Fp, the outside air AA outside the flow path wall portion is introduced from the gas inlet port 24le through the nozzle passage 241, and is generated in comparison with the fine bubble generating mechanism. The additional bubbles having a large particle diameter of the fine bubbles are introduced into the flow of the water in the flow path FP from the gas discharge port 241d. The sub-suction nozzle portion 24 has a nozzle projecting portion 24b projecting from the wall portion 26 201018527 of the connecting portion bracket, and a gas discharge port 24 is formed at the front end of the connecting portion. The outer peripheral surface of the protruding portion 24b protrudes to form the male screw portion 2"; : 'In the female screw hole 24u of the auxiliary suction nozzle portion 25, (4) The protruding height formed in the connecting flow path is locked. The amount of the nozzle protrusion 24b can be adjusted as shown in Fig. 2'. The sealing member 262, 311 of each of the outer peripheral surface of the outer peripheral surface and the inner peripheral surface of the main body frame 2 in the axial direction is provided with sealing seals 262, 311, respectively, and then in the axial direction = dense: members 262, 311 An air introduction gap: AS is formed between the outer peripheral surface and the inner peripheral surface, and communicates with the air intake port 12 that penetrates the wall portion of the main body casing. In the present embodiment, the pressing gap 21G and the water recirculation The road 251 adjusts each size when the water is supplied to the water flow population by a supply pressure of 0.2 MPa, and the injection flow rate from the water outlet 106 is 6 to 12 liters/min. For example, the flow path disclosed in Figs. 1 to 6 is included. Forming the main parts of the member 2〇 The specific dimensions can be determined as follows: (Fig. 4). Flow path body 26: inner diameter = 8.6 mm, flow path length = 7 〇 5 positions. Connection portion 25: inner diameter d 〇 = 5. 4 mm, flow path length = 24 mm • Preparing the reduced diameter portion of the pressing mechanism 30: inner diameter dl == 3 mm, flow path length = • preparation of the pressing mechanism 30 feeding portion 31A: inner diameter flow path length = =1 0 mm (Fig. 6) • impact member 22: Thread outer 揠: M4.8, flow path protrusion height: 31 (four) 27 201018527 . Decompression cavity 221: inner diameter d3 = 2mm, depth Η: 4. 5mm ( H / d3 = 2 5) • opposite impact member 23: threaded Diameter: M3 8, flow path protrusion height: 22 coffee front end reduction portion: the bottom angle Θ is 45 degrees conical shape with respect to the decompression cavity 221 intrusion depth k: about 〇. 2mm • squeeze the gap 21G squeeze gap center The offset distance of Q is about "cafe. Interstitial flow interval stone: 0. 57ππη. Sub-suction nozzle portion 24: Thread outer diameter: M3.6, nozzle hole inner diameter: protrusion in the flow path of the nozzle projection 24b Height: 2. 5 mm The distance between the axis of the impact member 22 and the sub-suction nozzle portion 24: ❹ In the above-described dimensional relationship, when warm water of supply pressure of 0.2 MPa and 37 ° C is supplied to the water inlet 31, water Injection flow rate outlet 1〇6 about 9 liters / min. In the following, the flow rate and pressure distribution in the fine bubble generating mechanism 21 were simulated by a commercially available thermal fluid analysis software (EFD, manufactured by Lab Corporation, Ltd.) under the above-described dimensional conditions and supply pressure conditions. Further, in the pressing gap 21G, in addition to the above-described dimensional conditions, the protruding height of the impact member 22 in the flow path is fixed to the above-described size, and by changing the protruding height of the opposing impact member 23, the gap flow interval $ ® is 〇 The flow rate distribution simulation at 7 mm and 1.07 mm can also be performed in the same manner. Fig. 7 is a view showing the relative positional relationship between the impact member 22 and the opposing impact member 23 when the gap flow interval is 〇·〇7 leg, 0.57 mm, and 1.07 mm from the left side. The lower part of Fig. 8 shows the simulation results of the flow velocity distribution inside and around the squeezing gap 21G when the gap flow interval $ is 〇.57 mm. The flow velocity in the vicinity of the front end of the reduced diameter portion of the opposing impact member 23 reached 32 m/sec, and the inside of the pressure gap 21G was also passed through a plurality of flow lines. Further, a swirling flow is remarkably generated near the outer edge of the reduced diameter portion, and the flow rate is a value of 24 to 3 〇 m / sec. Further, on the downstream side of the impact member 22 and the opposing impact member 23, a still-speed region of 15 21 m/sec (convex turbulence: corresponding to a negative pressure region to be described later) is also remarkably generated. The expansion toward the downstream side of the high-speed region is stopped at a position close to the axial distance of the impact member 22 and the sub-suction nozzle portion 在 at a position close to the inner surface of the flow path wall, and the central axis of the flow path having a small wall impedance The vicinity of the sub-suction nozzle portion 24 extends forward in a tongue shape. On the other hand, in the upper part of Fig. 8, the gap simulation interval is the same simulation result. Since the gap flow interval 彡 becomes smaller, the flow line inside the nip 21G is reduced by the number 又. The maximum flow rate of the water flow passing through the squeezing gap 21G is about 彳? About 12m / sec. On the other hand, the swirling flow near the outer edge of the reduced diameter portion is more pronounced, which is close to the vicinity of the thin waist gap portion 21n: the flow rate exceeds 3 〇 m / sec, and the flow velocity near the outer edge of the reduced diameter portion is approximately It is 24~27m / sec. Fig. 9 is a two-dimensional display structure 99, 24^ of the simulation results when the clearance flow is 〇·〇7 mm, and the opposite impact member 23 and the sub-suction nozzle 邛24 are shown in longitudinal section by the flow path member 22 Under the impact member with the opposite direction.... One side. Although the eddy current analysis of the analysis described later by the impact structure Reynolds number is displayed, the turbulent flow can be surely achieved from , for example, 0. Further, a suction flow in the external air suction passage is generated in the sub suction nozzle ^_4. In the squeezing gap, the flow rate near the end of the occlusion gate is 8 to 12 m/sec. Figure 10 shows the two-dimensional display of the simulation results when the clearance flow is = 齄 齄 + secret box. The flow velocity in the lower and lower regions of the squeezing gap is greatly increased. 29 201018527 The first thirsty flow in the large decompression cavity 221, the gap at the front end of the reduced diameter portion changes significantly. The flow velocity near the squeezing end is 23 ~30m / sec. 1 Figure shows the three-dimensional display of the gap flow interval. The simulation results of the (4) gap (8) " to the impact member 243⁄4; 'and the nickname 22 and the front end (four) Λ / more expanded. In (4) (four) The flow velocity in the vicinity of the diameter reduction is 23 to 28 m/sec. In the figures 9 to 11, the (four) member 2 and the opposing impact member of the impact member 25 are formed on the downstream side of the fenestration. Φ "But" in the 9th to 11th figures, at least... W seconds before and after, the simulated knot 4. 8x1 η-3 ^ ^ The outer diameter D of the impact member 22 is the coefficient ^ / is ' / 4 1W seconds 'hypothesis The water temperature is 1 〇. . The dynamic viscous filament of the water is broad-V, and the second 'shock member 22' C=D · U/v) is calculated as % Ke (4.8x10-3) xl5/(l 31)<lr6)^496i exceeds the impact member The value of the standard (about 1500) of the Reynolds number Re required for the fluidization of the surrounding water around the skin of the skin of the skin 22, which means that the water is directly below the impact member 22 or the opposing punch member 23 to generate a three-dimensional An extremely intense swirling turbulence corresponding to the Reynolds number described above. The Reynolds number k when the lower limit value is employed can be adjusted within the range of the outer diameter of the impact member 22 (and the opposing impact member 23) to be about 11,450. Further, the supply pressure of the water inflow port 31 has a flow rate of about ◦8 to 88 MPa before reaching the impact member 22, which is the above value. The range of 0·5 to 4 times (7 5 to 6 〇 m/sec) of w seconds) is changed. Therefore, the Reynolds number around the impact member 22 is also various values between 5_~200_ 30 201018527. The condition that the water flow around the impact member + 』 handcuff 1 is turbulent is satisfied that Re> 1500 is constant. Further, Fig. 12 shows a simulation result of the distribution of the pressure Λ 沾 沾 仏 J J J J ! 21 21 21 21 21 21 21 21 21 21 21 21 21 21 21 21 21 21 。 。 。 。 。 。 。 。 From the results, the following conditions can be judged.

The negative pressure level in the decompression cavity crosses the bee beyond 〇. 〇D The negative pressure level in the extrusion gap is above 0.07Mpa, especially from the phase Φ to the vicinity of the front end of the reduced diameter portion of the impact member toward the downstream side. A region exceeding 0.09 MPa (the theoretical upper limit value is 〇. 1 MPa (i gas pressure)) is formed. On the downstream side of the pressing gap and the impact member, the negative pressure region across the full section of the connecting portion 25 is formed to span a section 2 to 3 times the outer diameter of the impact member 25, particularly in the crushing gap and impact. On the positive downstream side of the member 25, a negative pressure region exceeding 0.05 MPa forms a section that traverses the outer diameter of the impact member 25 by 1.5 times. That is, in the flow path FP, most of the generation space of the swirling turbulent flow CF becomes a negative pressure state. Ο Fig. 13 shows the pressure change along the center axis of the flow path, and indicates the lowest negative pressure level near 0·1 MPa at the position of the nip, and then the negative pressure state continues to the vicinity of the sub-suction nozzle unit 24. In the prior art disclosed in Patent Documents 2 to 5, the flow rate necessary for the cavitation phenomenon is obtained by using a conventional pressing mechanism. Then, when the flow rate is larger than a certain value, the impact accuracy of the bubbles generated by the precipitation is also increased, and the pulverization of the fine bubbles is naturally performed, which is the basis of the method. On the other hand, in Patent Document 1, the technique of generating a small swirling flow by guiding the water flow by the wing body 'also increases the flow velocity by swirling fluidization, and increases the impact accuracy of the bubble by rotating the water flow of 31 201018527 There is no change in this technology. However, in the case where the hollow is not a solid bubble, the solid particles are caused to collide with each other to be slightly pulverized, and are not limited to being pulverized into smaller bubbles by the impact, as shown in FIG. 15C, the impacted bubble BM The possibility of growing into a thick bubble bc in combination with each other becomes high. There is a technical flaw in this. In the present invention, the pressing gap 21G' is formed by the use of the impact member 22 to continuously generate a negative pressure in the pressing gap 21G, and the impact member 22 is swung on the downstream side by the high-speed impact to generate a three-dimensional intense turbulence. The water cell directly under the crushing and pressing region 21G densely forms a plurality of small eddy currents to solve the problem. Specifically, from the above simulation results, what kind of phenomenon occurs in the microbubble generating mechanism 21 can be derived from the next one. That is, by preparing the pressing mechanism 30 (Fig. 2), as shown in Fig. 14A, the water flow WF flows to the pressing gap 21G in an up-and-down manner up to and after 10 to 20 m/sec. On the other hand, as shown in Fig. 5, the impact member 22 and the opposing impact member 23 forming the pressing gap 21G form a water-removing return path portion 251 for returning the water after the impact between the flow path wall portions. That is, by squeezing the yang: 21g of the outer periphery is opened at the recirculation portion 25, the fluid impedance is not excessively

θ. As shown in Figs. 14B and C, the water flow WF passes at a high speed of more than 25 m/sec in the pressing gap 21G. Thereby, a large negative pressure region of the inside of the pressing gap 21G and the downstream thereof is generated in a strong negative pressure region exceeding 5 MPa. The dissolved air in the water flow is precipitated, and bubbles (10) are generated in a large amount. On the other hand, as shown in Fig. 15A, the water flow WF that has hit the impact member 22 and passed through the water return flow path portion 251 is swirled to the downstream side of the impact member 32 32 201018527 side, from the aforementioned Reynolds number Re level assumed to be large. The flow forms a fierce turbulent CF. Thereby, a small eddy current SWE (turbulent flow) is formed across the entire area/very high density on the downstream side of the impact member 22. Further, by increasing the density of generation of the eddy current SWE, the negative pressure region is formed not only in the inside of the pressing gap 21G but also on the downstream side thereof in a stereo wide angle. Therefore, as shown in Fig. 14C, the passing flow of the pressing gap 21G including the precipitated bubbles BM continuously precipitates bubbles in the negative pressure region on the downstream side of the gap, and is agitated by a large number of eddy currents. Further, as shown in the fifth D5D Lutu (JJ sectional view of Fig. 15A), the edge region of the squeezing gap 21G has a wedge-shaped cross section ', and the outer peripheral side of the space forms an annular shape open to the dam returning portion 251. The gap peripheral space 251n, in particular, the portions on both sides of the pressing gap 21G in the direction of the water flow WF on the outer peripheral surface of the reduced diameter portion 23k also functions as an auxiliary gap. Therefore, holes are also generated in the water flow passing through the auxiliary gap, and the generated bubble enthalpy is pulverized by being entangled in the vortex SWE on the outlet side, thereby improving the efficiency of generation of the fine bubbles. Each vortex SWE produced by turbulent flow has a lower pressure than the outer periphery of the thirsty flow, so that the flow of water around the thirsty SWE is introduced into the vortex. In the turbulent flow, as described above, a large number of small three-dimensional eddy currents SWE are densely formed, and as shown in the upper part of FIG. 15B, the bubble bm which is precipitated and grows by the hole effect when the squeeze passes through the gap becomes A three-dimensional coordination state formed by a plurality of hole flows SWE is often connected. Each of the leakage flows is opposite to the bubble BM, and the attraction force is applied to the 15B ® ήί, -ρ _ respectively. If the bubble is not present, the bubble BM is sucked into the fourth vortex SWE to become an "eight-crack" state. The pulverization of the diameter of the bubbles is carried out while promoting the pulverization of the fine bubbles. That is, the so-called bubble 跗 33 201018527 impacts each other and pulverizes to mean an image which is torn by a plurality of attractive small thirsty flows and which are attracted to a plurality of different directions. Further, the downstream side of the gap is enlarged, and the gas which has grown to a certain level or higher is expanded by the negative pressure, and the effect of cracking and miniaturization is also expected. As shown in Fig. 15E, the outer peripheral surface of the impact member 22 (or the opposing impact member 23) forms a male screw portion (23t) in the present embodiment, but the outer peripheral surface of each member is not a smooth cylinder. The surface, but the threaded surface, also contributes to the efficiency of the turbulent flow. That is, in the impact member and the opposing impact member 23, 'the positional relationship between the center axis and the water flow direction is right angle, and the thread formed on the outer peripheral surface thereof (water flow peeling uneven portion) 22m is illegal with respect to the axis of the impact member. The imaginary facet has a certain inclination angle of 0 (for example, 2. More than 15. Below). When the water flow WF flows into the impact member in a direction parallel to the = imaginary plane VP, a plurality of inclined threads 22m are transversely cut with respect to the flow direction to hang over the downstream side of the impact member. At this time, when the water flow WF passes over the ridge line of the thread 22m from the valley side of one side and enters the valley side of the opposite side, water flow separation contributing to the turbulence is generated. Further, as shown in Fig. 15F, the water flow peeling uneven portion may be formed by the serration portion 22S along the axial direction of the impact member 22 (and the opposing impact member 23). Further, an important feature of the present embodiment is that the decompression cavity 221 is formed at the front end of the impact member 22 so as to face the pressing gap 21G. The following actions and effects can be obtained from the decompression cavity 221. From the above simulation results, it is understood that the high-pressure region in the entire region of the decompression cavity 221 is more than 0.05 MPa, and the bubble 34 201018527 caused by the cavitation phenomenon is precipitated, and the precipitated bubble is easily expanded. The crack is caused, so that the fineness of the bubble can be obtained.

• It is noted that the resonance of the house (5) 221 produces resonance in the water flow, and the ultrasonic wave is generated, and the cavitation and resonance vibration of the bubble promote the bubble pulverization. The following institutions are considered as the main reasons. As shown in Figs. 14B and 14C, the flow of water along the tip end portion of the opposing impact member 23 facing the decompression cavity 221 is increased by the aforementioned simulation result, and the speed is more than 30 m/sec. The pressure is reduced into the hole 221, and multiple reflections are repeatedly performed between the decompression holes, such as the inner wall surface. The supersonic wave resonance wave is excited by the natural frequency determined by the shape of the decompression cavity 221 by the much more reflection of the water flow. For example, the factor of the inner diameter of the decompression cavity 221 in the 2 dragon water is assumed to be 15 〇〇 m / sec, and the natural frequency of the vibration in the direction of the cavity radius is considered to be approximately an integer multiple of c / 2 dx (acoustic engineering theory (Ito Yi, Showa (10) year) P.270 ~ 271,: 7 mouth + society, **). Thereby, the frequency of the lowest-order vibration is about 375 kHz, which becomes the ultrasonic band vibration. Further, from the outer diameter 〇 of the impact member 22 used and the level of the flow velocity v, the range of the Reynolds number Re is about 5 G 00 _ __ as described above, assuming that the frequency of the Karman vortex vibration is f, and the Stol number (St) is About 0.2. At this time, the flow rate was 15 m/sec and the outer diameter D was 4.8 mm. f = St · U/D · (2) From this, the frequency f is calculated to be 625 Hz, and the ultrasonic wave is transmitted from the ultrasonic belt for long-distance transmission. However, the structure forming the impact member 22 is interrupted by the formation of the dust-extending space 21G at the opening position of the decompression cavity 22, and the outer diameter of the front end portion of the opposing impact member (2) is more wireless toward the decompression hole '221. Small pole 35 201018527 The limit is reduced. Further, the flow rate of the 3521G between the pressing portions may be larger than the front end portion of the opposing impact member 23 by the above (4) and (4) before and after 30 «! / sec. That is, in the vicinity of the front end portion of the opposing impact member 23, that is, near the opening of the decompression cavity 221, the outer grip D is reduced, and on the other hand, the amplitude of the card (10) flow vibration calculated by the equation (2) is increased due to the υλ amplitude. f is raised to the ultrasonic band level. On the other hand, 'in the squeezing: in the position of 21G, there is no physical obstacle, corresponding to the flow state near the pressing gap 21G, the Karman vortex vibration is generated by various frequencies of the ultrasonic band, wherein the selection is close to the reduction The natural frequency of the cavity 221 is generated to generate resonance vibration. According to the microbubble generating mechanism 21 of the present embodiment described above, a larger amount of fine bubbles can be generated than in the prior art. Here, the result of measurement of the bubble size will be described. In the microbubble generating mechanism 21 disclosed in Figs. 1 to 6 (but the interstitial flow spacing stone is l 57ffim), a gas-fired water heater is connected by a conduit, and a warm water having a pressure of 35 MPa and a temperature of 3 rc is supplied. The water sprayed from the water outlet 106 is discharged into a water tank having a volume of about 9 liters. The average flow rate of the warm water supplied to the fine bubble generating mechanism 21 at this time was 9.5 liter/min. Then, the measurement water discharge f (the height of the drainage raft from the bottom of the tank: about 4 Gcm) flows out from the side of the tank, and the warm water retained in the tank flows out, and the laser-return type particle size distribution measuring device is introduced. (4) The measurement unit of the production site: SALD2200), and the bubble diameter distribution is measured. In addition, the water is discharged into the water tank under the condition that the entire microbubble generator #21 is immersed in water. The bubble diameter is measured in the state where the external suction is not performed via the sub-suction portion 24. The laser refraction type particle size distribution measuring device causes the laser light to enter the measuring unit at a predetermined angle, and the particle diameter of the particle to be measured (here, the bubble) is different by the scattering angle, and is detected by an individual photodetector. The intensity of the scattered light is different from the angle, and the distribution information of the particle size is obtained from the detected intensity of each sensor. According to the measurement principle, in the laser-refractive-type particle size distribution measuring apparatus, the detector has a tendency to increase the detection intensity of the bubble-scattered light having a large volume, and a different plurality of lights are used in the range of the particle diameter to be used. The output intensity of the detector is directly calculated, and the distribution information is obtained by using the relative total volume of each particle size interval (hereinafter referred to as volume relative frequency) as an index. That is, in general, the average particle diameter is a mathematical mean diameter which is known as the sum of the diameters of the particles divided by the number of particles, but the laser-retracted particle size distribution measuring device directly measures only the volume average diameter weighted by the particle volume. . Fig. 16 is a view showing the peak in the vicinity of the particle diameter of 100#πι and around 400ym in the mode with respect to the measurement result. However, in the distribution display caused by the relative frequency of the volume, even if there are many tiny bubbles, there are a few mixed coarse bubbles, and since the distribution information of the microbubbles which are not numerically advantageous is offset by the distribution information of the coarse bubbles, The distribution of tiny bubbles cannot be properly evaluated. For example, in a system consisting of a bubble of 4 〇〇em and a bubble of 1 // m, it is a function of staying in the water for a long time and playing various functions! In the case of a bubble of 1/ζπι, only one of the 400 m bubbles floats on the surface and is destroyed, and the technical significance is not significant. However, the volume-weighted average value of 37 201018527 (hereinafter referred to as the volume average diameter) obtained by measuring directly is about 346 v m, and it is too large as the value of the sentence block t. It is also understandable that there is one bubble in the 400"m bubble that cannot truly reflect ten thousand. On the other hand, since the bubble is substantially spherical in water, if the relative total volume of the particle size interval is used as the measurement information, the cubic root of the interval relative to the total volume is converted into a distribution table formed by the mathematical relative frequency. Fig. 17 shows the result of the conversion. The average value of the bubble diameters in the vicinity of about 50 " is read. However, the bubble of 1 〇/zm or less is completely absent. Here, the detection intensity distribution of the scattered light of each detector corresponding to each particle size section is referred to, as shown in Fig. 18, corresponding to 10 „! In the detector group of the particle size section, 70 to 80% of the detector group of the particle size section of the peak intensity level of 20 #m or more can detect the scattered light. Here, the grain technique of 20 or more is used. Except for the output information of the detector group in the interval, the distribution of the relative frequency of the volume is calculated using only the output information of the detector group of the particle size interval of less than 20 m, as shown in Fig. 19. Thus, the average particle diameter In 〇, two positions near the 5/zm (first peak) and 2"m (second peak) can clearly confirm the distribution peaks of approximately equal height. The first peak is 1/4 of the second peak. The presence of the same diameter and volume ratio means that the pulverization near the 〇.5"m is 32 times that of the nearby bubble, so that when it is converted into the mathematical average diameter of the entire bubble of ΙΟ/zm or less, the bubble region belonging to the micro-nano is obtained. This value is close to the round of using all detectors And the mathematical mean value of the calculation (about 5 〇 #m) is 38 201018527 1/100. Here, the number of bubbles below 10# melon is the total number of bubbles, which can be obtained by the above measurement results. As a result of the graph, the total scattered light intensity of the bubbles below 1 m (hereinafter referred to as the first bubble group) is 50% of the total scattered light intensity of the bubbles of 2 m or more (hereinafter referred to as the second bubble group). In the volume relative frequency distribution of Fig. 16 calculated using the output values of all the detectors, 'the distribution information of the first bubble group is offset by the distribution information φ of the second bubble group' just converted into a mathematical mean The result of Fig. 17 can also substantially reflect the mathematical mean diameter of the second bubble group. On the other hand, the mathematical average diameter of the first bubble group is 〇55 as described above at 550 nm). Then, the result from Fig. 18 'If the total scattered light intensity of the first bubble group is 50% of the total scattered light intensity of the second bubble group, even if the volume of the first bubble group is relatively small, there is a total volume of the second bubble group 1 〇%. Also 'by all inspections The average diameter of the calculated average of the output of the detector is 120/m above and below in Fig. 16. That is, although a part of the warm water (about 100 cc) stored in the 45-liter water tank© is introduced into the measuring unit. The measured measurement can also detect a large number of bubbles up to 120 // m after volume averaging. Specifically, the lowest unit of existence of the scattered bubbles is 1 "one". The zero volume frequency value has a minimum diameter class and also contains 1 bubble. In the calculation result of Fig. 16, since the deliberate frequency in the diameter class of 500 / / m does occur, the bubble of the diameter class is assumed to be "1", for example, the volume frequency of the diameter class of the 1 barley 111 It is 8 times the volume frequency of the diameter class of 500 // m, and since the particles of 100#m in the same volume account for 53=125 times, only the bubbles of the level of i〇〇ym 39 201018527 exist in 100 cc. 125χ8 = 1〇〇〇. In detail, the total number of bubbles of all levels in which the intentional frequency appears in Fig. 16 is 5000 to 10000. That is, the second bubble group above and below the volume averaging i ^ 〇 # ^ contains at least 5 在一 in one liter. Then, the first bubble group of 'volume averaged 〇' 55/zm (550 nm) is present at least about 1% of the total volume of the second bubble group, and the number of the minute bubbles in one liter is: 120 Χ500〇χ〇. H〇. 55,5 〇4χ1〇9 (1) solid/liter), about more than 500 million. On the other hand, in the measurement of bubbles in warm water, a large number of coarse water vapor bubbles adhere to the water surface. The gastric vapor bubble is also attached to the inner Φ of the measurement unit it in the same manner, and the amount of adhesion increases as time passes. In this way, the coarse air bubbles that have been released into the water tank and become the water vapor and adhere to the cell wall surface are included in the bubble generated on the side of the fine bubble generating mechanism, and the distribution of the measured diameter is measured. The measured value is shifted to the large particle diameter to cause an error. Here, the water was also subjected to the same measurement in the case of producing water vapor, and the results were described. The fine bubble generating mechanism 21 (the gap flow interval θ | 1.57 mm) described in Fig. 1 to Fig. 6 is connected to the water channel by a pipe, and is supplied with a pressure of 5555 MPa to supply 1 (the cold water of rc is discharged to the volume. The average flow rate of the cold water supplied to the fine bubble generating mechanism 21 at this time is 12.2 liters/min. It is seen that the water vapor adheres to the inner surface of the water tank. Hereinafter, the bubbles are measured in the same manner as in the case of warm water. The distribution of the diameter. The twentieth chart shows the vertical distribution of the relative volume of the volume which is not directly obtained by the measurement. Compared with the 16th figure of the case of the warm water 201018527, the different features are described below. (1) In the coarse bubble region The distribution peak exists in the case of warm water before and after 100//Π1 and before and after 40 0#m, and in cold water, there is only one in the vicinity of 200 private m. The proportion of the large bubbles exceeding '400 em is greatly reduced. And suppress the influence of water vapor bubble. (2) Although it shows in the relative frequency of volume, it appears in the area of micro-nano bubbles that are not in warm water, specifically, near 0.2^^(20 Onm), in the case of coarse bubbles Peak of the control area Clear height distribution appears 1/4

W Hua value. Here, the result ratio of converting Fig. 20 into a mathematical relative frequency distribution is shown in Fig. 21. The difference between the bubble diameter indicated by the center value of the two peaks in Fig. 20 is about two digits (1 〇〇〇), and the difference is about 1 billion times due to the same total volume. The peak on the diameter side is completely eliminated. 'On the side of the microbubble, only one peak is identified around the center of the private bubble. In Fig. 20, the number of bubbles of the diameter class of 600 // m is considered to be one, and by the same examination as described above, the total number of 100CCs of the second bubble group above and below the volume of 200 lm is at least 1〇. More than one. On the other hand, the volume is averaged by 0.2 ΑΠ! The height of the distribution of the first bubble group above and below is 1/4 of the height of the distribution peak of the second bubble group, and the number of 1 liter of the first bubble group is about 2.5×1 〇 12 Fig. 22 shows the detected intensity distribution of the scattered light of each detector, but the scattered light detection intensity of the bubble diameter range of 1 〇//ηι or less is equal to the scattered light detection intensity of the bubble diameter of 20 # m or more. According to Non-Patent Document 1, the Z potential level of the bubble interface is inversely proportional to the diameter of the bubble straight 201018527. In the water containing no electrolyte, the average diameter of the fine bubbles which are stably present is about _nm which is slightly smaller than 1 Mm. However, in the microbubble generating device of the present embodiment, fine bubbles having an average particle diameter whose boundary value is greatly lowered are generated easily and at a high concentration.

In the structure of the bath 301 of Fig. 1, the water flow WJ discharged from the fine bubble generating mechanism 21 into the bath 3〇1 contains a large number of minute bubbles bs. The hot water in the bath 301 is temporarily reduced in the concentration of the dissolved air by the bubble deposition, and is returned to the pressurization dissolution tank 31 by the pump 3丨3, and the dissolved air concentration is again increased, and returned to the bath 3 via the fine bubble generating mechanism 21. (u, in the bath 301, 'maintains a state in which the bubble BS is present, and is often present at a high concentration. By bathing in such warm water, the following various effects can be expected. (1) Micro gas/bag entering the pores In the depths, when the tiny bubbles are destroyed, the old waste is discharged by the large energy, and the stratum corneum of the skin is carefully removed. The smoothness of the skin after bathing is greatly improved.

(2) When the tiny bubbles are destroyed, the oil particles of the skin become fine, and the moisture retention is excellent because it remains in the skin moderately. As a result, it is possible to maintain a smooth stretch of muscles for a long time, and to restore the young effect. (3) The tiny bubbles that enter the pores of the whole body give a good degree of stimulation at the time of extinction, and the blood runs and warms from the center of the body. In the bath, after the water is cold, there is a hot spring atmosphere (capsaicin effect). In addition, there are countless micro-gas/bags that reach the body, and because the skin is slightly stimulated, it can improve the effect of the blood pressure to activate the skin. (4) The fine bubbles have the property of accumulating ions in the water to collect on the gas-liquid interface. The collected ions are concentrated due to the reduction of the microbubbles. As a result, 42 201018527 microbubbles in water are in a state in which the interface charge density is very high. The cluster structure of water (hydrogen bonding network) is composed of water molecules H2〇 and several jj+ and 0H generated by electrolysis of water molecules, but the interface structure of bubbles has a tendency to easily collect h+ or oh-, and the volume of water The density of the ion is higher than that of the ion, and as a result, the interface of the bubble is charged (Non-Patent Document 1). Further, since this tendency is strong against 〇H-, the microbubble interface tends to be negatively charged under normal Ph conditions. By the charging of the bubble, the living body (human body or animal body) φ which is in contact with the water containing the microbubbles has a physiological activation effect. In the present invention, since the fine bubbles smaller than the conventional particle diameter are introduced at a high concentration, the physiological activity effect described above can be remarkably expected. Specific examples of the physiological activity effect include adjustment of autonomic nerves, enhancement of lung function, improvement of allergic constitution, purification of gold liquid, activation of cells (repair of injured cells, metabolism), interferon effect (virus interception), Cell proliferation inhibition (anti-aging effect), normalization of blood pressure, immune enhancement, mental stability, air purification (deodorization, sterilization). Further, the microbubble generating mechanism 21 of the present invention is not limited to the hot water circulating bath unit 1 of Fig. 1, and the utility of utilizing the fine bubbles can be applied to the following applications, and the specific application of the present invention is not Limited to these specific examples. Further, the upper limit of the pressure of the water supplied to the microbubble generating mechanism 21 is not limited, and in order to reduce the generation efficiency of the fine bubbles and the diameter of the bubble, it is of course possible to supply the pressure by a pump (at this time, the supply pressure can be sighed at 0.5 MPa at any time). ~ l〇〇MPa range). Fig. 23A shows an example in which the capillary head SH of the bathroom is mounted with the fine bubble generating mechanism 21. The male screw portion SHT' of the male screw portion STB' formed on the bottom end side of the handle portion is directly connected to the shower head sh by the joint TS, as shown in Fig. 43 201018527 23B, and the female thread for connecting the fine bubble generating mechanism 21 is provided. The portion 278u (second drawing: symbol 273 is a 〇-shaped ring) is screwed to the male screw portion sht, and the connecting seat ts is screwed to the connecting male screw portion 274 of the fine bubble generating mechanism 21 (Fig. 2: symbol 273) The water ring from the showerhead tube TB is introduced into the shower head SH through the fine bubble generating mechanism 21, and a water flow containing a large amount of fine bubbles is ejected from the shower head. By the shower of the water, the effects of the above (1) to (4) can be similarly enjoyed. In the case of the microbubble generating mechanism 21 of the second drawing, the nozzle portion 24 (the third drawing or the like) is provided, and the fine bubbles bf and the secondary suction nozzle portion 24 which are generated in the pressing gap 2]G are easily obtained. Two types of bubbles, such as bubbles with a large particle size, are introduced. The pulverization of the air bubbles introduced from the sub-suction nozzle unit 24 is suppressed, and the mathematical average particle diameter is adjusted to be higher than or equal to (more preferably, 2GG or more, 1_ or less), and the shower water flows against the skin to be soft. By mixing large-sized bubbles, it is possible to maintain the touch of a shower with a rich amount of water even when the flow rate is reduced. In addition, when applied to a shower, it can improve the flow of the knees flowing to the skin and the hair and the shampoo. The microbubble generating mechanism 21 of the present invention can generate a plurality of finer bubbles than the conventional technique, and the microbubbles contained in the shower water flow have an excellent effect on removing dirt and cleaning oil adhering to the hair. And the amount of shampoo can be greatly reduced, or you can get enough washing without using soap and shampoo. Also, when using soap and shampoo, the bubbles will fall easily, reducing hot water. 44 201018527 In the valley to the use of shower water containing micro-bubbles, charged micro-bubbles interact with water vapor, producing a large amount of negative in the air The bathroom of the family has a forest bath atmosphere. Moreover, the interface of the fine bubbles is activated by the concentrated negative charge, and has excellent bactericidal effect. The shower water containing such fine bubbles is used in the bathroom or the bath, due to the large amount of bubbles. It will remain in the drain, which can achieve the purification of the bath circulation pipe and the drain pipe and prevent the stick slip, and can reduce the amount of the lotion used in the cleaning. φ The second figure shows that the fine bubble generating mechanism 21 is attached to the tap 501. An example of the faucet 502. A faucet joint 503 is mounted on the side of the faucet 502. The faucet joint 503 is provided with a 〇-shaped ring 5〇3 on the inner side of the faucet-side opening (:, the rigid end of the faucet 502 is pressed into the bolt 5〇3b On the other hand, the female screw portion 503u is formed in the outlet side opening of the faucet joint 503, and the microbubble generating mechanism 21 can be connected by locking the male screw portion 274 for connection shown in Fig. 2 . Thereby, the flowing water from a general faucet can be introduced into the micro-bubble very easily. This type of flowing water has excellent sterilization work, and can be suitably used for, for example, vegetables and fruits, fish. In addition, since a large amount of oxygen-containing microbubbles are contained, the activity in the body is enhanced by use for drinking. Fig. 23C is a water supply source in which the microbubble generating mechanism 21 is attached to a faucet or the like. An example of the tip end of the water supply conduit TB. The fine bubble generating mechanism 21 is attached to the water supply conduit TB, and the water from the water supply conduit TB is connected to the water supply conduit TB from the water supply conduit TB. The water flow of the fine air bubbles is sprayed. For example, if the water flow WJ is used in the floor FL of the kitchen KT of the restaurant, the food factory, the cleaning of the floor of the fresh food processing plant such as the market, the fish market or the fresh fish shop, The effect of floor dirt removal, sterilization or deodorization is remarkable. Fig. 23D is an example of an aquaculture unit 400 to which the microbubble generating mechanism 2 of the present invention is applied. The basic configuration corresponds to the bath 3 () 1 of the hot water circulation type bath unit 1 of the first drawing to the change of the culture tank 4〇1. The water jet is formed in the same manner as the bath 301 of Fig. 1 so as to penetrate the groove wall. In the 23D view, the tubular spray nozzle 402 attached to the bottom end portion of the fine bubble generating mechanism 21 is disposed above the culture tank 401. A plurality of nozzle holes 4〇2n formed in the longitudinal direction of the side surface of the injection nozzle 4〇2 are sprayed into the culture tank_401. Figure 23D shows an example of farmed oyster 0Y. By using the fine bubble generating mechanism 21 of the present invention, the particle diameter of the generated fine bubbles is extremely small, and the water containing the fine bubbles is supplied to the culture tank 4〇1 of the oyster 0γ, thereby promoting the sterilizing of the oyster (or the bacterium). Inactivated, for example, even in the summer when there is a problem such as poisoning, it is possible to stably supply safe and delicious oysters. Moreover, it is also expected to contribute to the promotion of oyster growth or quality improvement. In particular, the water used for culture is seawater, and seawater containing a large amount of electrolytes can produce fine bubbles with an average particle size of less than 10 nm (i.e., nanobubbles), and a high-quality culture system can be constructed with an inexpensive mechanism. In addition, the aquatic products to be cultured are not limited to oysters, and other marine fish such as shellfish, squid, lionfish, and squid, freshwater fish such as sorghum and scorpion, and crustaceans such as shrimp and crab are also applicable. Fig. 24 is a view showing an example of a washing machine in which the fine bubble generating mechanism 21 is assembled. The washing machine 600 is a vortex type washing machine, and a fine bubble generating mechanism 21 is attached to the tip end of the water pipe 603 to which the tap water 46 201018527 is supplied, and water in which a large amount of fine bubbles are introduced is used as washing water. The washing machine in which the structure other than the water supply unit of the fine bubble generating mechanism 21 is mounted is the same as that of the conventional washing machine. For example, in the structure of Fig. 24, the washing tank 605 is disposed in the casing 602 in a non-operating manner, and the dewatering tanks 6 to 4 in which a plurality of dewatering holes are formed in the circumferential direction are rotatably disposed. A pulse motor 607 is disposed at the bottom of the dewatering tank 604, and is rotatably driven in the tank by the motor 606 being rotationally driven. Further, while the φ water in the tank is discharged from the water distribution pipe 608, the rotation transmission of the motor 606 is switched from the pulsator 607 to the dewatering tank 604, the dewatering tank 604 is rotationally driven, and the soap is subjected to centrifugal dewatering treatment. Further, the drum-type washing machine comprising the washing tub 6〇5 and the axis of the dewatering tank 6〇4 inclined to the side, the dewatering tank 6〇4, which is rotationally driven by the motor in the circumferential direction, is equally applicable to the present invention. By using the fine bubble generating mechanism 21 of the present invention, washing with water containing fine bubbles having a particularly small particle diameter, the washing effect on the clothes is remarkably improved, and the amount of water or lotion used is greatly reduced. advantage. Moreover, ® can expect the deodorizing effect by the sterilization action of fine bubbles. Fig. 25 is a view showing an example of a dish washing machine in which the fine bubble generating mechanism 21 is assembled. In the dishwasher, the fine bubble generating mechanism 21 is attached to the tip end of the water pipe 6〇3 for supplying the tap water, and has a structure in which water in which a large amount of fine bubbles is introduced is used as the washing water. The structure other than the portion in which the fine bubble generating mechanism 21 is attached to the water supply portion is the same as that of the conventional food washing machine. For example, in the case of the structure of Fig. 25, the liquid permeable support portion 7 〇3 constituted by the frame built-in net or the whole plate or the like accommodates the cutlery tray (the basket, the net, the rectifying plate, etc.) which is the washing table PH. The permeable 47 201018527 structure 704 is placed on the liquid permeable support portion 703. Then, the water supply pipe 701 branches to the upper and lower sides of the dish tray 704, and the fine bubble generating device 21 is attached to the outlet side. In each of the fine bubble generating devices 21, a tubular injection nozzle 7〇2 similar to that of Fig. 23D is connected, and washing water containing a large amount of fine bubbles from the fine bubble generating device 21 is supplied from the nozzle holes 702n of the respective injection nozzles 702. The tableware PH in the cutlery tray 704 is sprayed up and down to be washed. By using the microbubble generating device 21 of the present invention, the dishwashing is washed with water containing a large amount of fine bubbles having a particularly small particle diameter, and the washing effect on the oil or the like is remarkably improved, and the water or the lotion is drastically reduced. The advantage of the amount of use. In the following, various modifications of the microbubble generating mechanism of the present invention will be described (the same elements as those in the description are given the same reference numerals, and detailed description thereof will be omitted). Fig. 26 is a view showing a structure in which the sub-suction nozzle portion 24 is omitted from the micro-bubble generating device 21 of Fig. 3. Figure 27 shows the decompression cavity formed in the impact member £2.

The water machine in 1 is smoother and forms a curved surface at the bottom of the cavity. Further, the opening inner peripheral surface of the vacuum reduction hole 221 of the μth graph is an example of a seat-like tapered surface 2 corresponding to the tapered circumferential side surface 231 of the distal end portion of the opposite impact member 23. By forming the taper 224, the effect of the water flow guiding to the front end side of the opposing impact member 23 can be improved. Fig. 29 shows an example in which the front end surface of the sweat decompression cavity (2) is formed flat from the impact member 22. Although the tapered side surface 23 of the opposing impact member 23 is "fronted" with the impact member 22, Fig. 30 shows the shallow decompression drop 9 at the front end face of the opposing impact member ^ 2010 201027. In the example of Q Ο jej^ / ^ 32, the pressure-reducing cavity is not formed in the impact member 22, and the outer peripheral edge of the tip end portion is tapered, and the circumferential side surface 225 is formed. Fig. 31 shows that the thin waist joint portion 21C is integrally formed in the axial direction. The impact member is pressed against the opposing impact member 23 and penetrates through the example formed on the thin waist joint.

Fig. 32 is a cross-sectional view showing an example in which the nozzle passage 226 is formed in the impact member 22 in the structure of Fig. 3 (the figure of Fig. 33 is a view in which the sub-suction nozzle portion 24 is omitted). The nozzle passage 226 is formed in a wall portion (flow path wall) of the connecting portion 25, and is formed to penetrate in the protruding direction in the flow path. The one end side opens the gas discharge port 226d in the pressing gap 21G at the tip end of the impact member 22. The other end is formed through the flow path wall portion 25 and the gas inlet port 226e is formed outside the wall portion (the above-described tool engagement hole 226e and the decompression cavity 221 constitute a part of the nozzle passage). The external air is sucked from the gas intake port 226e through the nozzle passage 226 and supplied into the press gap 21G by the negative pressure of the water flow generated in the press gap 2i (j). This configuration is in addition to the hole in the weaving gap 21G. In addition to the bubble which is deposited, the external air sucked from the nozzle passage 226 also forms a bubble and is mixed into the water flow. Therefore, a fine bubble of a higher concentration can be obtained. Further, the nozzle passage 226 is opened in the decompression cavity 221, The external air suction force is enhanced by the large negative pressure in the decompression cavity 221, and the concentration of the fine bubbles BF can be increased. In this configuration, 'the external air is normally supplied to the pressing gap 21G via the nozzle passage 226, so it is supplemented. The dissolved air concentration which is reduced by the bubble deposition. In this case, as shown in Fig. 43, a system of the 2010 201027 system in which the pressurization dissolution tank is omitted can be constructed. Fig. 34 is a view showing the formation form of the decompression cavity 221 when the nozzle passage 226 is formed. In the modified example, the inner circumferential surface of the decompression cavity 221 is exemplified by a seat-shaped tapered surface 224 corresponding to the tapered circumferential side surface 231 of the distal end portion of the opposite impact member 23. On the other hand, Fig. 35 shows Hollow structure made slightly reduced pressure 0

Fig. 36 shows that the pressure-reducing cavity is not formed in the impact member 22 and the opposing impact member 23, and the pressing gap 1G is formed between the flat opposing faces thereof, and the axis of the two members is arranged to be formed with respect to the flow path. The cross-sectional center of the member 20 is biased toward the one-side 'water migration return portion only formed on the one side of the impact member 20 (and the opposite impact member (8). Moreover, Fig. 37 shows the abolishment of the opposite impact member, and the formation member in the impact structure The inner surface of the wall portion of 20 is formed as a pressing gap to form a weir 23c, and an example of forming a crushing gap 2ig in a facing shape is formed.

The front end surface of 22 corresponds to the inner surface of the wall portion of the flow path forming material 2G to form a convex surface and two surfaces. Fig. 38 shows an example in which the opposing impact member 123 is formed wider and wider than the impact cymbal, and the side of the opposing impact member 123 does not generate the water migrating (four) path portion 2 51. The impact member 22 and the other structure examples of the phase fine bubble generating mechanism 21 in the form of Fig. 34 are attached. In the main body portion of the flow path Fp of the path forming member 2G, the punching hole is disposed in the form of the pressing hole_ from the side of the swimming side to the pressing mechanism, and the gap 23 is pressed. On the other hand, the flow path forming member core H and the opposing impact end face side form a tubular tubular extension 50 201018527 portion 256. Fig. 40 is a view showing the parts of the impact member 22 and the opposing impact member 23, and Fig. 41 shows the interval at which the pressing gaps 2丨G are changed by the axial direction of the impact member 22 and the opposing impact members 23. Fig. 42 shows an example in which the flow regulating plate 291 is disposed in the enlarged diameter portion 256 of the flow path forming member 2A of Fig. 39. In the rectifying plate 291, a plurality of rectifying holes 92 are formed in the circumferential direction, and the shunt cone 293 is formed in the central portion facing the pressing gap 21G. In the squeezing gap 21G, the water flow into which the minute φ bubbles are introduced is radially branched by the splitter 213 and guided to the respective rectifying holes 92. The water flow passing through the rectifying holes 92 flows out from the extrusion holes (formation of the water flow outlet) of the outflow side orifice plate 2 95 provided on the downstream side. Further, the flow regulating plate 291 and the outflow side orifice plate 295 are integrally coupled to each other at the outer edge by the connecting wall portion 194 in the axial direction. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view of a hot water circulation type bath unit of a suitable object of the fine bubble generating mechanism of the present invention. Fig. 2 is a cross-sectional view showing the internal structure of a microbubble generating mechanism according to an embodiment of the present invention. Fig. 3 is an external side view showing an example of a preparation masking mechanism used in the microbubble generating mechanism of Fig. 2. Fig. 4 is an enlarged cross-sectional view showing the main part of the fine bubble generating mechanism. Fig. 5 is an axial sectional view showing the position of the pressing gap of Fig. 4. Fig. 6 is an enlarged cross-sectional view showing the dimensional relationship of each portion of Fig. 4. 51 201018527 Fig. 7 is an explanatory view showing the concept of adjusting the squeezing gap by the position of the opposing impact members. Fig. 8 is a schematic view of the microbubble generating mechanism of Fig. 4, in which the interval between the pressing gaps is set to 0.07 Å and the flow velocity distribution in the nip gap when the 〇·57 μ is set is viewed from the plane. Fig. 9 is a view showing an analog image in which the internal flow velocity distribution is viewed from a plane when the interval between the pressing gaps is set to 0.07 mm in the microbubble generating mechanism of Fig. 4. The first drawing is the simulated image in which the internal flow velocity distribution is set from the plane when the interval is set to 0.57 mm in the microbubble generating mechanism of Fig. 4. Fig. 11 is a view showing an analog image in which the internal flow velocity distribution is viewed from a plane when the interval between the pressing gaps is set to 1.07 mm in the microbubble generating mechanism of Fig. 4. Fig. 12 is a simulation image of the internal pressure distribution when the interval of the pressing gap is set to 〇·57 mm in the microbubble generating mechanism of Fig. 4. Figure 13 is a cross-sectional view of the pressure distribution of Figure 12 including the flow axis through the squeezing gap. Fig. 14 is an explanatory view of the action of the impact member and the opposing impact member of the microbubble generating mechanism of Fig. 4. The 15th drawing is an explanatory diagram of the action following the seventh drawing. Fig. 15 is an explanatory diagram showing the concept of pulsing and miniaturizing bubbles by a plurality of eddy currents. Fig. 15C is an explanatory view showing the concept of combining bubbles by impact. 52 201018527 Figure 15D is an explanatory diagram of the action of the gap edge space. Figure 15E is an explanatory view of the action of the thread contacting the water flow. Fig. 15F is a perspective view showing an example of a member (4) in which the water flow is peeled off from the uneven portion to form a (four) shape. Figure 16 shows the supply of 〇2MPa water pressure 37τ warm water to the first! In the case of the microbubble generating mechanism of the figure, the result of measuring the particle size distribution in the generated water stream by a laser refraction type granulometer is displayed in a relative volume ratio. Lu 17 shows a graph in which the measurement result of the bubble particle size distribution in Fig. 16 is converted into a relative number ratio. Fig. 18 is a view showing the scattered light detection intensity distribution of the detector for each of the particle size intervals of the laser-refractive-type granulometer corresponding to the measurement result of Fig. 16. Fig. 19 is a diagram showing the scattered light detection intensity distribution of Fig. 18, in addition to the output of the detector which receives the scattered light from the bubble of 20 // m or more, and the bubble size distribution is expressed by the relative volume ratio. . 5。 The water pressure of 9.5. (When the warm water reaches the fine bubble generating mechanism of Fig. 1, the result of measuring the particle size distribution in the generated water flow by the laser refraction type granulometer is displayed in a relative volume ratio. Fig. 21 is a second drawing. The measurement result of the bubble particle size distribution is converted into a graph of the relative number ratio. Fig. 22 is a view showing the scattered light of the detector of each of the particle size intervals of the laser refraction type granulometer corresponding to the measurement result of Fig. 20 Fig. 23 is a view for explaining a first example of the microbubble generating mechanism of Fig. 2, and Fig. 23B is a view for explaining a microbubble generating mechanism of the second drawing of the flute in September. Fig. 23C is a view for explaining a third application example of the fine bubble generating mechanism of Fig. 2 in Fig. 2. Fig. 23D is a view for explaining a fourth modified example of the fine bubble generating mechanism of Fig. 2 Fig. 24 is a view showing an example of a washing machine for assembling the microbubble generating mechanism of Fig. 2. Fig. 25 is a view showing an example of a dish washing machine for assembling the microbubble generating mechanism of Fig. 2. 26 Figure from Figure 4 The cross-sectional view of the first embodiment of the main portion of the microbubble generating mechanism of the present invention. The second drawing is the second main part of the microbubble generating mechanism of the present invention. The second embodiment of the microbubble generating mechanism of the present invention is a cross-sectional view of a third modification of the main portion of the microbubble generating mechanism of the present invention. Fig. 30 is a view showing a fourth modification of the main portion of the microbubble generating mechanism of the present invention. Fig. 31 is a cross-sectional view and a transverse cross-sectional view showing a fifth modification of the main portion of the microbubble generating mechanism of the present invention. Fig. 32 is a cross-sectional view of the cross section 201018527 in which the nozzle passage is formed in the impact member in Fig. 4. Fig. 34 is a cross-sectional view. Fig. 34 showing an embodiment in which the sub-suction nozzle portion is omitted. Fig. 34 is a sixth modification of the present invention. Axial section view of the passage of the main part of the mechanism. The main part of the microbubble generating mechanism

Fig. 36 is a cross-sectional view and a plan view showing a modification of the flute of the main portion of the fine bubble generating mechanism of the present path. The axial cross-sectional view and the transverse cross-sectional view of the main ninth modification of the microbubble generating mechanism of the present invention are shown in Fig. 37. Fig. 38 is a tenth modification of the main part of the microbubble generating mechanism of the present invention. The axial cross-sectional view and the transverse cross-sectional view of the eleventh modification of the main part of the microbubble generating mechanism of the present invention. Fig. 40 is an impact member of the microbubble generating mechanism used in Fig. 39. And three views of the detailed structures of the opposing impact members. Fig. 41 is an explanatory view showing a concept of changing the interval of the pressing gap by using the impact member and the opposing impact member of Fig. 39. Fig. 42 is a micrograph of Fig. 39. In the bubble generating mechanism, a shaft cross section and a cross section of a modified example of the auxiliary water flow stirring portion are provided on the downstream side of the impact member and the opposing impact member. Fig. 43 is a view showing the hot water circulating bath unit of Fig. 1 omitted. A schematic diagram of an embodiment of pressurization dissolution. 55 201018527 [Description of main components] 1~ hot water circulation type bath unit 10 - main body frame 10u - female thread portion 12 - air Inlet 20 to flow path forming member 21 to fine bubble generating mechanism 21G to pressing gap 21n to thin waist gap portion 22 to impact member 22m to thread (water flow peeling uneven portion) 22S to serrated portion 23 to pressing gap forming portion and facing direction Impact member 23c to pressing gap forming portion 23k to reduced diameter portion 24 to auxiliary suction nozzle portion 24b to nozzle protruding portion 24t to male screw portion 24u to female screw hole 25 to flow path wall portion 26 to flow path body 27 to Bottom end portion 2 71 to male thread portion 201018527 30 to prepare pressing mechanism 31 to water flow inlet

31A~introduction portion 32 to small diameter portion 92 to rectifying hole 10 5 to bearing flange 10 6 to water outlet port 123 to impact member 12 7 to orifice ring 127h to pressing hole 221 to decompression hole 222, 232 to tool card Opening hole 226 to nozzle passage 226d to gas discharge port 226e to gas inlet port 241d to gas discharge port 241 e to gas inlet port 2 51 to water-removing return flow path portion 251n to gap edge space 256 to diameter-enlarged portion 261 to seal flange 262 to 1st sealing member (0-ring) 265 to sealing member 2 71 to accommodating recess 57 201018527 272 to sealing flange 274 to connecting male screw portion 275 to second sealing member (0-ring) 278u to connecting mother Threaded portion 291 to rectifying plate 2 9 3 to shunting cone 294 to wall portion 2 9 5 to orifice plate

3 01 to the bath 302 to the module mounting portion 3 0 3 to the outflow port 310 to the pressure dissolving tank 311 to the pipe 312 to the pipe 313 to the pump

314~ piping 315~ suctioner 316~pressure regulating valve 400~ aquaculture unit 401~ breeding tank 402~jet nozzle 402η~ nozzle hole 5 01~ water plug 502~ faucet 58 201018527

503- / faucet joint 503b ~ bolt 503C ~ 0 ring 503u ~ female thread portion 6 0 0 ~ washing machine 602, / frame 603 ~ water pipe 604, y dewatering tank 605, - washing tank 606 ~ motor 607, - pulse 608 , "Water distribution pipe 700 ~ Tableware washing machine 701 - - Water supply pipe 702 - - Spray nozzle 702 η ~ Nozzle hole 703 - - Liquid permeable support portion 704 - - Cutlery tray WA ~ Hot water ΡΗ ~ Tableware ΚΤ ~ Kitchen FL ~ Floor SH~ shower head TS~ connector 59 201018527

SHT~ Male thread section TB~ Showerhead duct AS~ Air introduction gap SW1~First eddy current SWE'~Vortex FP~ Flow path CF~ - Screw into turbulent flow BM~ - Fine bubble

Claims (1)

201018527 VII. Patent application scope: 1. A microbubble generating mechanism, comprising: a hollow flow path forming member having a water flow inlet and a water flow outlet, and internally forming a flow path from the water flow inlet toward the water flow outlet; an impact member, a gap forming portion from the inner surface of the flow path wall portion of the flow path forming member, and the protrusion of the conflicting member in the flow path The direction leading end portion faces a direction in which a water sluice return portion is formed between the outer peripheral surface of the collision member and the inner surface of the flow path wall portion, and a squeezing water flow is formed between the collision member and the gap forming portion. a squeezing gap of a water flow having a low flow rate and a high flow velocity in the sluice return passage portion, and a gap in which the bubble is deposited by the negative pressure generated by the squeezing gap is caused to impinge on the impact member through the water flow and pass through the water flow return passage The turbulent flow that is screwed into the downstream side of the impact member pulverizes the precipitated bubbles into fine bubbles. The microbubble generating mechanism according to the first aspect of the invention, wherein the leeches are formed on both sides of the flow path in a direction in which the impact member protrudes from the water flow direction. 3. The microbubble generating mechanism according to claim 1, wherein at least one of the opposing faces of the impact member and the gap forming portion forming the pressing gap forms a decompression cavity. 4. The microbubble generating mechanism according to any one of claims 1 to 3, wherein between the water inlet and the microbubble generating mechanism, a pressing mechanism is provided to increase the inlet from the water inlet. The fine bubble generating mechanism is introduced into the speed of the water flow. The micro-bubble generating mechanism of any one of the above-mentioned impact member and the above-mentioned gap forming portion forming the squeezing gap is at least one of the water bubbles in the water. The inflow side forms a pressing inclined surface in which the pressing gap gradually decreases from the upstream side toward the downstream side. The microbubble generating mechanism according to any one of the first to fifth aspects of the present invention, wherein at least one of the opposing faces of the pressing gap of the impact member and the gap forming portion flows out of water The side forms a pressing inclined surface in which the pressing gap gradually increases from the upstream side toward the downstream side. 7. The fine bubble generating mechanism of any one of the first to sixth aspects of the present invention, wherein the water flow stripping uneven portion is formed on an outer peripheral surface of the protruding portion of the flow path in the impact member. The fine bubble generating mechanism according to the seventh aspect of the invention, wherein the water flow peeling uneven portion is a thread formed on an outer peripheral surface of the protruding portion of the flow path in the impact member. 9. The fine gas > packet generating mechanism of any one of claims 1 to 8, wherein the above-mentioned squeezing gap and the above-described dam return portion are The respective sizes are not adjusted so that the maximum flow rate of the water flowing through the above-mentioned pressing gap at the supply pressure 〇 2 MPa to the water inlet is 8 m/sec or more. 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。. 11. The micro-bubble generating mechanism according to the first aspect of the invention, wherein the decompression cavity described in claim 3 or 4 is formed by supplying a pressure of 2 MPa to the water inlet. The above-mentioned 62 201018527 The whole area of the decompression cavity is a negative pressure state of 〇· 〇 2 MPa or more. 12. The esthetic bubble generating mechanism of the invention of claim 2 or wherein the water is supplied to the water inlet by a supply pressure of 2 MPa, and the number average of the fine bubbles contained in the water jet ejected from the water outlet. The particle size is below 10 V m. 13. The micro-bubble generating mechanism as described in the first aspect of the patent application, wherein when the supply pressure 〇 2 MPa is supplied to the water inlet, φ adjusts the outer diameter of the impact member having a circular shaft section and The flow cross-sectional area of the water sluice returning portion is such that the Reynolds number of the impact member disposed in the water-removing return path portion is 1,000,000 or more. 14. The microbubble generating mechanism of claim 13, wherein the outer diameter of the impact member having a circular shaft cross section is adjusted to 15 mm and the flow cross-sectional area is adjusted to move the water to the return flow portion. The average flow rate is above 8 m/sec. The microbubble generating machine according to the fourteenth aspect of the invention, wherein the pressure member of the above-mentioned impact member having a circular shaft section is adjusted when the supply pressure is 055 MPa and the water of the temperature i〇〇c is supplied to the water inlet. The outer diameter is 1 to 5 mm, and the flow-through area is adjusted so that the average flow velocity of the water retrace portion is 18 m/sec or more, and the Reynolds number of the impact member disposed in the water return flow path portion is 20,000 or more. The maximum flow rate of the water flow in the gap is 25 m/sec or more, and the number average particle diameter of the fine bubbles contained in the water jet ejected from the water outlet is 1 or less. The microbubble generating mechanism according to any one of the first to fifth aspect, wherein the impingement member has a nozzle passage that penetrates the impact member in a protruding direction together with the flow passage wall portion, and one end side At 63 201018527, the front end side of the impact member opens a gas discharge port toward the pressing gap, and the other end side penetrates the flow path wall to open a gas inlet port on the outer surface of the wall portion, and the water flow generated in the pressing gap is negatively pressurized. The outside air outside the flow path wall portion is sucked from the gas intake port through the nozzle passage and supplied into the extrusion gap. The microbubble generating mechanism of claim 16, wherein at least one of the opposing faces of the pressing gap forming the impact member and the gap forming portion forms a decompression cavity, and is formed in the above The nozzle passage of the impact member is opened in the decompression cavity. The microbubble generating mechanism according to any one of the first aspect of the present invention, wherein the gap forming portion is formed as a counter impact member centering on a cross-sectional center of the flow path and The opposite side of the impact member protrudes from the inner surface of the wall portion toward the impact member, and the pressing gap is formed between the front end portion of the impact member in the protruding direction and the front end portion of the opposing impact member in the protruding direction. The micro-bubble generating mechanism according to claim 18, wherein at least one of the impact member and the opposite impinging member faces the front end portion of the pressing gap to form a reduced diameter portion, which has a more forward end Small cone-shaped peripheral side. The micro-bubble generating mechanism according to claim 19, wherein in the front end surface of the impact member and the opposite impinging member, a decompression cavity that is pulled in a direction toward the intervening direction is formed on a front end surface of the impact member and the opposite impingement member. The reduced diameter portion is formed at the front end of the 'the other side' with a positional relationship toward the opening of the decompression cavity. [21] The microbubble generating machine 64 201018527', wherein the above-mentioned squeezing gap is formed by the edge portion formed by the opening edge portion of the upper vacant hole by the front end surface of the impact member a wedge-shaped cross section in which the outer peripheral edge region of the tapered side surface of the tapered portion faces each other, and the outer peripheral side of the space is open to the annular peripheral space of the annular shape of the water-removing return material and the decompression cavity is formed by the decompression The annular inner waist edge of the hollow opening communicates with the annular thin waist gap portion at a position facing the circumferential side surface of the rib portion. The microbubble generating mechanism according to any one of the preceding claims, wherein the money returning passage portion forms a shape that spans an outer peripheral surface of the impact member and an outer peripheral surface of the opposing impact member. In the fine m-synthesis mechanism according to any one of the items 18 to 21, the center of the gap in the water inflow side opening position in the above-mentioned pressing gap is the center of the gap. In the definition, the cross section of the flow path is half-way, from the inner surface of the flow path wall (four) to the above The distance between the center of the gap is smaller than the distance from the center of the section, and the position of the above-mentioned pressing gap is adjusted by moving the predetermined length from the center of the section in the radial direction. 65