JP4002439B2 - Microbubble generating nozzle and its application device - Google Patents

Description

【Technical field】
[0001]
  The present invention is for purifying micro-bubbles with a diameter of several tens of microns into water and air in order to improve the cleaning ability of cleaning water due to dirt in purification of rivers, lakes, tap water, etc., washing machines, toilets, etc. The present invention relates to a microbubble generating nozzle and its application device.
[Background]
[0002]
  The water purification function of microbubbles has already been widely known as described in, for example, the Nikkan Kogyo Shimbun issued on July 24, 1998. It is necessary to adjust the size of the generated bubbles freely according to the use of the jet power necessary for spreading the purification effect over a wider range in the closed water area where there is no property. In order to satisfy these required characteristics, many closed water purification devices have been proposed in the past, as seen in JP-A-5-64800, JP-A-5-146696, JP-A-8-230761, and the like. Has been.
[0003]
  Conventionally, various types of bubble generating bathtubs have been proposed that can generate bubbles in the bathtub and allow comfortable bathing with the bubbles.
[0004]
  Japanese Patent Laid-Open No. 9-173404 discloses pressure detection means for detecting the discharge pressure of a pump, gas suction amount adjusting means for changing the suction amount of gas sucked from the gas suction port, and detection results of the pressure detection means. On the basis of the above, there is disclosed a bubble generating device provided with control means for driving and controlling the gas suction amount adjusting means.
[0005]
  Japanese Patent Application Laid-Open No. 10-295761 discloses a device main body including a pump unit that discharges absorbed hot water as a water flow, an air intake unit that mixes air into the water flow, and the pump unit. In a bubble generating apparatus in a bath provided with a nozzle part that jets bubbles out of the apparatus main body together with a water flow from the communication pump part, an airfoil injector having a plurality of injection ports in a substantially rectangular box shape is used as the nozzle part. There is disclosed a bubble generating apparatus in a bath in which the plurality of injection ports are attached in a detachable and turnable manner and the plurality of injection ports are opened in parallel on a surface opposite to the surface facing the nozzle portion.
[0006]
  Further, Japanese Patent Application Laid-Open No. 11-155924 discloses that when hot water in a bathtub is sucked from a suction port by a circulation pump and sprayed from the bubble nozzle, air is sucked into the hot water sprayed from the bubble nozzle. In the bubble generation bathtub that entrains the air supplied through the air pipe from the head to the bubble nozzle and injects it into the bathtub as a bath water mixed with bubbles, an open / close valve is provided in the air pipe, and this open / close valve is connected to the bubble nozzle from the bubble nozzle. There is disclosed a bubble generating bathtub provided with a control device that opens when bath water is sprayed and closes when bath water spray is stopped.
[0007]
  Furthermore, if oxygen is contained in the water, the inner wall of the boiler can is oxidized and rusted and corroded. In order to prevent this, conventionally, Ca was put in water and adhered to the inner wall of the boiler can to form a protective film. However, if Ca is excessively adhered, the Ca film is a heat insulating material, so the thermal efficiency of the boiler decreases. To do. Therefore, it was necessary to periodically remove the Ca film.
[0008]
  As a technique for degassing such dissolved gas such as oxygen from the liquid, (1) a method of separating the gas in the liquid by vacuum, and (2) separating the gas by raising the temperature of the liquid to boil There was a way to do it.
[0009]
  However, the vacuum method requires equipment such as a large compressor and a pressure vessel, and there is a problem that the equipment and cost are large, and the boiling method has a problem that the temperature cannot be increased depending on the liquid. It was.
[0010]
  Conventionally, a carburetor method, a mechanical fuel injection method, and an electronically controlled fuel injection method are known as fuel injection devices. In an electronically controlled fuel injection system that is generally used in recent years, a fuel injection valve is provided in the intake manifold, and the intake air amount, throttle opening, etc. are adjusted so as to obtain an optimal air-fuel ratio according to the operating conditions. It is detected and the fuel injection amount is finely controlled according to the operation state.
[0011]
  However, in these conventional apparatuses, the generation of microbubbles of about 10 μm is extremely difficult, and this type of microbubble generation has a large capacity (5 kg / cm²Required) pump.
[0012]
  In addition, since the pressure dissolution method is mainly used for the generation of microbubbles, in the case of an apparatus that focuses on the generation of microbubbles, it is not possible to generate bubbles having a large diameter of 100 μm or more. That is, the bubble size cannot be selected.
[0013]
  Further, none of the conventional fuel injection devices has a complicated structure and is not satisfactory in terms of performance. As a result of the research by the applicant, it has been found that, in the conventional system, the fuel is not sufficiently refined and uniformized with the air in the mixed state of the fuel injected from the fuel injection valve and the air sent. If the mixing state is not sufficiently miniaturized and uniform, not only fuel efficiency and emission performance can be improved, but also output performance is limited. Normally, since the fuel injection valve is provided near the intake valve of the intake manifold, the fuel injected from the fuel injection valve is conveyed downstream while being mixed with the intake air sent from the upstream and introduced into the cylinder. The At this time, since the intake air is a laminar flow, there is a limit to mix them well.
[0014]
  The first problem to be solved by the present invention is that the structure is simple, the applicability is high, and bubbles of various sizes as the microbubble generator are generated, and at the same time, the purification effect is diffused over a wide range. An object of the present invention is to provide a microbubble generating nozzle that satisfies a required characteristic of obtaining a jet output that generates a necessary liquid movement.
[0015]
  The second problem is that microbubbles can be generated using a small pump.MotivatedTo provide bubble bath equipment.
DISCLOSURE OF THE INVENTION
[0016]
  In order to solve the first problem, the microbubble generating nozzle of the present invention has an introduction portion for pressurized liquid and gas and a cylindrical bubble generation space, and the bubble generation space is opened in the introduction portion. Forming a pressurized liquid introduction hole and a gas introduction hole, opening the pressurized liquid introduction hole at an end face of the introduction part, opening the gas introduction hole on a side surface of the introduction part, and communicating with the gas introduction hole An adjusting valve for adjusting the gas introduction amount is provided in the gas introduction pipe.
[0017]
  The pressurized liquid introduced into the bubble generation space from the opening of the pressurized liquid introduction hole is discharged into the space under high pressure to generate a peeling area. Due to this peeling phenomenon, the gas introduced from the gas introduction hole is dispersed in the discharge water flow as microbubbles (fine bubbles). The dispersion amount and size of the microbubbles can be arbitrarily adjusted by adjusting the degree of opening of the gas introduction amount adjusting valve.
[0018]
  Further, by providing a gas introduction hole having an opening in the bubble generation space in the introduction portion, the dispersed state and size of the discharged bubbles can be miniaturized.
[0019]
  Furthermore, by providing the bubble generation space forming cylinder with a flow velocity reduction suppression hole, it is possible to suppress energy loss occurring in the peeling region and to mix fine bubbles into the liquid in the connected discharge side pipe.
[0020]
  Moreover, it can apply to the use which discharges microbubbles in air | atmosphere by providing a reduced diameter part or filling parts, such as an activator, in the downward position of the cylinder for bubble generation space formation.
  Furthermore, by attaching the above-mentioned microbubble generating nozzle to the pressurized liquid side connecting tube in a detachable manner, it is possible to easily select a nozzle for use in a liquid and a usage environment.
[0021]
  By arranging these microbubble generating nozzles or nozzle loading containers concentrically inside the large-diameter cylindrical body, the flow of water in a closed water area or the like can be promoted.
[0022]
  In addition, by preparing a multi-nozzle loading tool provided between the pressurized liquid side connecting pipe and the bubble generating side connecting pipe and provided with a loading section capable of loading a plurality of microbubble generating nozzles, a large nozzle can be prepared. A large amount of microbubbles can be generated without manufacturing.
[0023]
  At this time, gas introduction into a plurality of nozzles is integrated into one by preparing a gas introduction tube assembly chamber provided with a connecting portion that collects and connects gas introduction tubes of a plurality of microbubble generating nozzles in one space. be able to.
[0024]
  The nozzle of the present invention can provide a discharge liquid activated by an active agent by providing a container filled with an active agent at a position below the bubble generation space and contacting and passing the discharge liquid mixed with microbubbles. it can.
[0025]
  With the nozzle structure of the present invention, it is possible to supply a large amount of microbubbles over a wide area of a closed water area with a simple structure.
[0026]
  Moreover, the applicable field can be applied to any of oxygen supply to the water area, removal of chlorine, washing, etc., and is not limited.
[0027]
  By making the shape of the pressurized liquid introduction hole an ellipse, it is possible to secure a water passage area and at the same time to further reduce the area of the discharge surface of the bubble generation space, thereby increasing the generation efficiency of fine bubbles.
[0028]
  By providing a straight line communicating with the pressurized liquid introduction hole on the inner surface of the bubble generation space forming cylinder or a groove with spiral penetration or contraction, the area and space volume of the discharge surface of the bubble generation space are reduced. As a result, the generation efficiency of the fine bubbles is increased, the generation efficiency by the rectification effect and the swirl flow (energy loss suppression), and the expansion of the fine bubble diffusion range can be achieved along with the improvement of the jet power.
[0029]
  When installing a nozzle in the middle of a pipe by providing a window that can check the generation state of fine bubbles in the bubble generation space forming cylinder, the amount of air and the generation state of the bubble are not directly checked without checking the bubble generation state at the tip. Can be adjusted easily at hand.
[0030]
  A plurality of liquids are provided at a downstream position of the bubble generating space forming cylinder by providing a transported material introducing cylinder that automatically sucks one or more types of gases or liquids, mixes them with the pressurized liquid, and discharges them. Alternatively, the gas can be mixed uniformly, and food can be supplied far away at a farm or the like.
[0031]
  In addition to the generation of microbubbles, the introduction can be efficiently mixed by introducing a plurality of types of gas and liquid into the introduction section and discharging them into the gas-liquid mixing space.
[0032]
  Furthermore, a gas chamber can be formed at the bubble generation space side opening of the gas introduction hole, and a porous plug can be attached to the gas chamber to increase the generation efficiency of fine bubbles.
[0033]
  The pressurized liquid introduced into the bubble generation space from the opening of the pressurized liquid introduction hole is discharged into the bubble generation space under a predetermined pressure to generate a reduced pressure region in the bubble generation space. The gas introduced into the bubble generation space from the gas introduction hole through the pores of the porous plug mounted in the gas chamber by the depressurization phenomenon is dispersed in the discharge water flow as microbubbles (fine bubbles). The dispersion amount and size of the microbubbles can be arbitrarily adjusted by adjusting the pore diameter of the porous plug and the opening degree of the gas introduction amount adjusting valve.
[0034]
  In addition, by providing a gas bypass hole in the gas introduction hole that bypasses the gas chamber and communicates directly with the bubble generation space, when the pressure of the pressurized liquid is low, the pressure loss of the porous plug causes the gas introduction hole to It is prevented that gas is hardly introduced into the bubble generation space, and the gas is introduced into the gas generation space from the gas bypass hole to disperse the microbubbles in the discharge water flow.
[0035]
  Moreover, by making the shape of the pressurized liquid introduction hole an ellipse, it is possible to secure a water passage area and at the same time to further reduce the area of the discharge surface of the bubble generation space, thereby increasing the generation efficiency of fine bubbles.
[0036]
  On the outer periphery of the bubble generating space forming cylinder joined to the introduction portion, the flow rate that enables adjustment of the opening ratio of the flow rate reduction suppression hole and the space length from the bubble generating space forming cylinder discharge surface to the flow rate adjusting cylinder discharge surface By attaching an adjustment cylinder, the flow velocity can be easily adjusted when used in a bubble bath or the like.
[0037]
  By attaching a micro bubble curtain generating nozzle having a flat end-spreading discharge portion with a flow rate reduction suppression hole formed in the base at a downstream position of the bubble generation space forming cylinder joined to the introduction portion, the bubbles are planarized. Can be ejected.
[0038]
  The adjustment valve is composed of a gas introduction pipe connection portion and an air adjustment cock, and the gas introduction pipe connection portion has a circular cross section, and the air adjustment cock has a cross section ellipse in cross section. Fine adjustment of the area to be generated can be easily performed.
[0039]
  By attaching an air filter to the air intake port of the gas introduction pipe, it is possible to prevent clogging of the porous plug due to dust in the introduction air that is likely to occur when the porous plug is used as the gas introduction hole.
[0040]
  In order to solve the second problem, the bubble bath device of the present invention includes a pump that sucks water in a bathtub and discharges the water into the bathtub again, and a discharge side water channel of the pump. A microbubble generating nozzle that mixes the air and water pumped by a pump to discharge the microbubbles into the bathtub is provided.
[0041]
  Another bubble bath device of the present invention includes a pump that sucks water in the bathtub and discharges the water again into the bathtub, and a microbubble that is provided on the suction side of the pump and mixes air in the atmosphere with the sucked water A generating nozzle and a bubble crushing nozzle provided in the discharge-side water channel of the pump to finely reduce the air in the air and the bubble-mixed water pumped by the pump and discharge the microbubbles into the bathtub Characterized by.
BEST MODE FOR CARRYING OUT THE INVENTION
[0042]
  In the following examples of the present invention, the water pressure is 1.5 kg / cm as the introduced pressurized liquid.²~ 3.0kg / cm²Will be described based on an embodiment of a nozzle for purifying a closed water area using air as an introduction gas.
[0043]
A. Micro bubble generation nozzle
  Example 1
  FIG. 1 shows the structure of a nozzle 10A according to the first embodiment. FIG. 4A is a plan view showing the configuration of the introduction portion 1 viewed from the pressurized liquid inflow side on the upper surface, FIG. 5B is a longitudinal sectional view, and FIG. 5C is a bottom view viewed from the bubble ejection port side on the lower surface. is there.
[0044]
  As shown in FIG. 5B, the nozzle 10A has an introduction part 1 for a pressurized liquid and a gas, and a bubble generation space 2. In the figure, the bubble generating space forming cylinder 3 in which the introduction portion 1 and the bubble generating space 2 are formed is formed as a separate body, and each of them is fitted and integrated. It can also be formed.
[0045]
  In the introduction part 1, a pressurized liquid introduction hole 4 that opens on the upper surface thereof is formed, and opens to a bubble generation space 2 formed under the introduction part 1. The pressurized liquid introduction hole 4 has a truncated cone shape with the upper surface of the introduction part 1 as the bottom surface, and the size and number of diameters differ depending on the intended use of the nozzle and the type of pressurized liquid. As shown in a), with respect to the end face, a plurality of openings (six in this case) with an opening cross-sectional area of the bubble generating space 2 of 10 to 40% are opened so that each end face is in a symmetrical position. , It penetrates through the introduction part 1 and opens into the bubble generation space 2. Reference numeral 5 denotes a gas introduction hole. This gas introduction hole 5 is formed by a gas introduction tube 6 inserted into the gas introduction hole 5 of the introduction part 1 from the opening on the side surface, and opens in the bubble generation space 2 radially or in the center (in this case, radially). In addition, a gas introduction amount adjusting valve 7 is attached to the outside of the side opening. Moreover, the flow velocity reduction suppression hole 8 opens to the bubble generation space 2 side as shown in FIG. The number and diameter of the flow velocity reduction suppression holes 8 are adjusted by the pressure and amount of the pressurized liquid introduced through the connection pipe 15, and further, the number and the opening positions in the bubble generating space 2. To do.
[0046]
Example 2
  FIG. 2 shows the structure of a nozzle 10B according to the second embodiment. The figure shows the shape of the bubble generating space forming cylinder 3 and the fact that the flow velocity reduction suppressing hole 8 is not opened in the bubble generating space forming cylinder 3 and the bubble generating space forming cylinder 3 on the bubble generating space 2 side. 1 is the same as the embodiment of FIG. 1 except that a reduced diameter portion 9 is formed toward the discharge surface side.
[0047]
  In contrast to the case of the first embodiment, the nozzle 10B of this embodiment is suitable for use in an application in which a liquid mixed with fine bubbles is discharged into the air, for example, for attachment to a faucet or the like. In this case, the reduced diameter portion 9 provided in the lower position of the bubble generation space 2 can be used for the purpose of discharging microbubbles into the atmosphere.
[0048]
Example 3
  FIG. 3 shows the structure of a nozzle 10C according to the third embodiment. (A) is a view of the configuration of the introduction part 1 as seen from the pressurized liquid inflow side on the upper surface, (b) is a longitudinal section, (c) is a view as seen from the bubble outlet side of the lower surface, (d) It is an enlarged view of (c).
[0049]
  As shown in FIG. 5B, the nozzle 10C has an introduction part 1 for a pressurized liquid and a gas, and a bubble generation space 23. In the figure, the bubble generating space forming cylinder 3 in which the introduction portion 1 and the bubble generating space 2 are formed is formed as a separate body, and each of them is fitted and integrated. It can also be formed.
[0050]
  In the introduction part 1, a pressurized liquid introduction hole 4 that opens on the upper surface thereof is formed, and opens into a bubble generation space 2 formed under the introduction part 1. The pressurized liquid introduction hole 4 has a shape of a circle, an ellipse, or a truncated cone or an elliptic frustum with the upper surface of the introduction portion 1 as a bottom surface, and the size and number of diameters depend on the intended use of the nozzle and the pressure liquid. Although different depending on the type, as shown in FIG. 5A, a plurality (three in this case) of which the opening cross-sectional area of the bubble generating space 2 is 10% to 40% with respect to the end surface are respectively provided on the end surface. Is opened to be a point-symmetrical position, penetrates through the introduction portion 1 and opens into the bubble generation space 2. Further, the periphery 4a of the inflow side opening of the pressurized liquid introduction hole 4 is rounded so as to smooth the flow of the inflowing liquid. Reference numeral 5 denotes a gas introduction hole. This gas introduction hole 5 is formed by a gas introduction tube 6 inserted into the gas introduction hole 5 of the introduction part 1 from the opening on the side surface, and opens in the bubble generation space 2 radially or in the center (in this case, radially). In addition, a gas introduction amount adjusting valve 7 is attached to the outside of the side opening. In addition, 11 is a gas introduction hole Meclavis for closing a hole that is opened in manufacturing when the gas introduction holes 5 are formed radially, 15 is a connection pipe for connecting the introduction part 1 to the fluid flow path, and 12 is a bubble generation An arc-shaped pressurized liquid guiding groove formed on the inner surface of the space forming cylinder 3 and communicating with the pressurized liquid introduction hole 4, 13 is a convex for bonding formed at the end of the bubble generating space forming cylinder 3. Reference numerals 14 and 14 denote joining fasteners for joining the introduction part 1 and the bubble generating space forming cylinder 3 together.
[0051]
Example 4
  FIG. 4 shows the structure of a nozzle 10D according to the fourth embodiment. In the figure, in the embodiment of FIG. 3, the shape of the pressurized liquid introduction hole 4 is an ellipse. By using an ellipse, it is possible to secure a water passage area and at the same time to reduce the area of the discharge surface of the bubble generation space 2 and increase the generation efficiency of fine bubbles.
[0052]
  In contrast to the case of the first embodiment, the nozzle 10D of this embodiment is suitable for use in applications where more fine bubbles are required, for example, land culture.
[0053]
Example 5
  FIG. 5 shows the structure of a nozzle 10E according to the fifth embodiment. In FIG. 3, the pressurized liquid guide groove 12 on the side of the bubble generating space forming cylinder 3 communicating with the pressurized liquid introduction hole 4 in the embodiment of FIG. . By doing so, the volume of the bubble generation space 2 and the area of the discharge surface are further reduced, and the generation efficiency of fine bubbles is increased. In addition, it is possible to expand the microbubble diffusion range as the jet power is improved.
[0054]
  In contrast to the case of the first embodiment, the nozzle 10E of this embodiment is suitable for use in applications where more fine bubbles are ejected more distant, such as aquaculture in the sea area.
[0055]
Example 6
  FIG. 6 shows the structure of a nozzle 10F according to the sixth embodiment. In FIG. 3, the pressurized liquid guiding groove 12 on the side of the bubble generating space forming cylinder 3 communicating with the pressurized liquid introducing hole 4 in the embodiment of FIG. By doing so, a swirl flow is generated in the bubble generating space 2, the generation efficiency of the fine bubbles is increased, and the expansion range of the fine bubbles can be expanded along with the improvement of the jet power, and the bubble generation efficiency by the rectification effect Improvement and energy loss suppression effect can be expected.
[0056]
  In the case of the nozzle 10F of this embodiment, in contrast to the case of the embodiment 3, it is suitable for use in an application in which more fine bubbles are ejected farther, for example, oxygen supply to water in a dam lake, etc. ing.
[0057]
Example 7
  FIG. 7 shows the structure of a nozzle 10G according to the seventh embodiment. (A) is a view of the configuration of the introduction part 1 as seen from the pressurized liquid inflow side on the upper surface, (b) is a longitudinal section, (c) is a view as seen from the bubble outlet side of the lower surface, (d) It is an enlarged view of (c).
[0058]
  As shown in FIG. 2B, the nozzle 10G has an introduction part 1 for a pressurized liquid and a gas and a bubble generation space 2. In the figure, the bubble generating space forming cylinder 3 in which the introduction portion 1 and the bubble generating space 2 are formed is formed as a separate body, and each of them is fitted and integrated. It can also be formed.
[0059]
  In the introduction part 1, a pressurized liquid introduction hole 4 that opens on the upper surface thereof is formed, and opens to a bubble generation space 2 formed under the introduction part 1. The pressurized liquid introduction hole 4 has a shape of a circle, an ellipse, or a truncated cone or an elliptic frustum with the upper surface of the introduction portion 1 as a bottom surface, and the size and number of diameters depend on the intended use of the nozzle and the pressure liquid. Although different depending on the type, as shown in FIG. 5A, a plurality (three in this case) of which the opening cross-sectional area of the bubble generating space 2 is 10% to 40% with respect to the end surface are respectively provided on the end surface. Is opened to be a point-symmetrical position, penetrates through the introduction portion 1 and opens into the bubble generation space 2. Further, the periphery 4a of the inflow side opening of the pressurized liquid introduction hole 4 is rounded so as to smooth the flow of the inflowing liquid. Reference numeral 5 denotes a gas introduction hole.
[0060]
  This gas introduction hole 5 is formed by a gas introduction tube 6 inserted into the gas introduction hole 5 of the introduction part 1 from the opening on the side surface, and is one in the bubble generation space 2 in the radial or central position (in this case, one in the center). The gas introduction amount adjusting valve 7 is attached to the outside of the side opening. In the present invention, the gas chamber 17 is formed at the opening of the gas introduction hole 5 on the bubble generation space 2 side, and the porous plug 18 is attached to the gas chamber 17. The porous plug 18 is made of a porous material or a porous processed material in which micropores communicate with each other, such as foamed aluminum or porous ceramics. A pore diameter of about 10 to 100 μm is suitable for generating microbubbles.
[0061]
  In addition, 11 is a gas introduction hole Meclavis for closing a hole required when the inside of the gas introduction hole 5 is cleaned, 15 is a connection pipe for connecting the introduction part 1 to the fluid flow path, and 12 is a bubble generation space formation. An arc-shaped pressurized liquid guiding groove formed on the inner surface of the cylindrical body 3 and communicating with the pressurized liquid introduction hole 4; 13 is a projection for bonding formed at the end of the bubble generating space forming cylinder 3; Reference numeral 14 denotes a joining stopper that joins the introduction portion 1 and the bubble generating space forming cylinder 3.
[0062]
Example 8
  FIG. 8 shows the structure of a nozzle 10H according to the eighth embodiment. In the figure, the shape of the pressurized liquid introduction hole 4 is an ellipse in the embodiment of FIG. By using an ellipse, it is possible to secure a water passage area and at the same time to reduce the area of the discharge surface of the bubble generation space 2 and increase the generation efficiency of fine bubbles.
[0063]
  In contrast to the case of the seventh embodiment, the nozzle 10H of this embodiment is suitable for use in applications where more fine bubbles are required, for example, land culture.
[0064]
Example 9
  FIG. 9 shows the structure of a nozzle 10J according to the ninth embodiment. This figure is provided with a gas bypass hole 5a that bypasses the gas chamber 17 and communicates directly with the bubble generating space 2 in the embodiment of FIG. This is because when the pressure of the pressurized liquid is low, gas is hardly introduced from the gas introduction hole 5 into the bubble generation space 2 due to the pressure loss of the porous plug 18. Then, the generation of microbubbles is remarkably reduced, so that the microbubbles are dispersed in the discharge water flow by introducing the gas into the bubble generation space 2 from the gas bypass hole 5a.
[0065]
Example 10
  FIG. 10 shows the structure of a nozzle 10K according to the tenth embodiment. In this figure, the gas bypass hole 5a of FIG. 9 is applied to the structure of the embodiment shown in FIG. Other configurations and operations are the same as those in the ninth embodiment.
[0066]
Example 11
  FIG. 11 shows the structure of the microbubble generating nozzle 10L. (A) is a view of the configuration of the introduction part 1 as seen from the pressurized liquid inflow side on the upper surface, (b) is a longitudinal section, (c) is a view as seen from the bubble outlet side of the lower surface, (d) (C) is an enlarged view, (e) is an enlarged sectional view of the inside of the bubble generating space forming cylinder.
[0067]
  As shown in FIG. 5B, the nozzle 10L has an introduction part 1 for a pressurized liquid and a gas and a bubble generation space 2. In the figure, the bubble generating space forming cylinder 3 in which the introduction portion 1 and the bubble generating space 2 are formed is formed as a separate body, and each of them is fitted and integrated. It can also be formed.
[0068]
  In the introduction part 1, a pressurized liquid introduction hole 4 that opens on the upper surface thereof is formed, and opens to a bubble generation space 2 formed under the introduction part 1. The pressurized liquid introduction hole 4 has a shape of a circle, an ellipse, or a truncated cone or an elliptic frustum having the upper surface of the introduction portion 1 as a bottom surface, and the size and number of diameters depend on the use of the nozzle and the type of pressurized liquid. As shown in FIG. 4A, each of the end faces has a plurality (three in this case) having an opening cross-sectional area of the bubble generation space 2 of 10 to 40% with respect to the end faces. It opens so as to be in a point-symmetrical position, penetrates through the introduction part 1, and opens into the bubble generation space 2. Further, the periphery 4a of the inflow side opening of the pressurized liquid introduction hole 4 is rounded so as to smooth the flow of the inflowing liquid. Reference numeral 5 denotes a gas introduction hole.
[0069]
  This gas introduction hole 5 is formed by a gas introduction tube 6 inserted into the gas introduction hole 5 of the introduction part 1 from the opening on the side surface, and is one in the bubble generation space 2 in the radial or central position (in this case, one in the center). , Three in total, four), and a gas introduction amount adjusting valve 7 is attached to the outside of the side opening.
[0070]
  In addition, 11 is a gas introduction hole Meclavis for closing the hole required when the inside of the gas introduction hole 5 is cleaned, and 12 is a pressurized liquid introduction hole 4 formed on the inner surface of the bubble generating space forming cylinder 3. Communicating arc-shaped pressurized liquid guiding groove, 13 is a joining convex portion formed at the end of the bubble generating space forming cylinder 3, and 14 is a joint between the introducing portion 1 and the bubble generating space forming cylinder 3. 15 is a connecting pipe for connecting the introduction part 1 to the fluid flow path, and 19 is a downstream side connection pipe connected to the introduction part 1.
[0071]
  The inner wall of the bubble generating space forming cylinder 3 on the bubble discharge side of the pressurized liquid introduction hole 4 may be linearly processed. However, as shown in FIG. By forming the taps that are formed, it is possible to promote the refinement of the bubbles.
[0072]
Example 12
  FIG. 12 shows the structure of the microbubble generating nozzle 10M. In FIG. 11, in the embodiment of FIG. 11, the shape of the pressurized liquid introduction hole 4 is an ellipse. By using an ellipse, it is possible to secure a water passage area and at the same time to reduce the area of the discharge surface of the bubble generation space 2 and increase the generation efficiency of microbubbles.
[0073]
Example 13
  FIG. 13 shows the structure of the microbubble generating nozzle 10N. In this embodiment, gas introduction holes 5 are formed in three places around one introduction portion 1, and three pressurized liquid introduction holes 4 are formed around the three gas introduction holes, respectively. The structure is such that the pressurized liquid introduction side of the hole 5 is closed with the Meclavis 11. The pressurized liquid guide groove 12 is formed so that a common space is formed in the bubble generating space forming cylinder 3 on the discharge side of each pressurized liquid introduction hole 4.
[0074]
  Also in this embodiment, the inner wall of the bubble generating space forming cylinder 3 on the bubble discharge side of the pressurized liquid introduction hole 4 may be linearly processed. However, as shown in FIG. By forming a tap in which a mountain is biased on the downstream side, the refinement of bubbles can be promoted.
  In the nozzle having the above structure, the pressurized liquid introduced into the bubble generation space 2 from the opening of the pressurized liquid introduction hole 4 is discharged into the space under high pressure to generate a peeling area. Due to this peeling phenomenon, the gas introduced from the gas introduction hole 5 is dispersed in the discharge water flow as microbubbles having a diameter of about 10 μm. The dispersion amount and size of the microbubbles can be arbitrarily adjusted by adjusting the degree of opening of the gas introduction amount adjusting valve 7.
[0075]
Examples 14-16
  FIGS. 14 to 16 show a gas chamber 17 formed in the opening of the gas introduction hole 5 on the side of the bubble generation space 2 in the nozzle of FIGS. 11 to 13, and a porous plug 18 is attached to the gas chamber 17. . The porous plug 18 is made of a porous material or a porous processed material in which micropores communicate with each other, such as foamed aluminum or porous ceramics. A pore diameter of about 10 to 100 μm is suitable for generating microbubbles.
[0076]
  In this way, the gas chamber 17 is formed at the opening of the gas introduction hole 5 on the side of the bubble generation space 2, and the porous plug 18 is attached to the gas chamber 17, thereby introducing pressurized liquid of high pressure to medium to low pressure. Even microbubbles can be generated.
[0077]
B. Other nozzles
Example 1 (gas-liquid mixing nozzle)
  FIG. 17 shows the structure of the gas-liquid mixing nozzle 20 according to the first embodiment. (A) is a plan view showing the form of the introduction part 21 as viewed from the pressurized gas-liquid inflow side on the upper surface, (b) is a longitudinal sectional view, (c) is a diagram as viewed from the bubble outlet side on the lower surface, d) is an enlarged view of (c).
[0078]
  As shown in FIG. 2B, the nozzle 20 has an introduction part 21 for pressurized liquid and gas and a cylindrical introduction substance mixing space 22, and the introduction part 21 has an opening in the introduction substance mixing space 22. The pressurized gas / liquid introduction hole 23 and the plurality of gas / liquid introduction holes 24 are formed, the pressurized gas / liquid introduction hole 23 is opened at the end face of the introduction part 21, and the plurality of gas / liquid introduction holes 24 are opened at the side face of the introduction part 21. In addition, a plurality of gas-liquid introduction pipes 25 and 26 communicating with the plurality of gas-liquid introduction holes 24 are respectively provided with adjusting valves 27 and 28 for adjusting the amount of gas-liquid introduction. In the figure, the introduction mixture 21 and the introduction mixture forming space 22 forming the introduction mixture space forming cylinder 29 are formed as separate bodies and are integrated by fitting them together. It can also be formed integrally.
[0079]
  The pressurized gas / liquid introduction hole 23 has a shape of a circle, an ellipse, or a truncated cone or an elliptic frustum with the upper surface of the introduction part 1 as a bottom surface. As shown in FIG. 5A, the end surface includes a plurality (three in this case) having an opening cross-sectional area of the introduced substance mixing space 22 of 10 to 40% with respect to the end surface. Are opened so as to be in point-symmetrical positions, penetrate through the introduction portion 21 and open into the introduction mixture space 22. The gas-liquid introduction hole 23 is formed by gas-liquid introduction pipes 25 and 26 inserted into the introduction part 21 from the side opening, and a plurality of the gas-introduction holes 22 are radially opened in the introduction mixture space 22 and the gas is introduced outside the side opening. Liquid introduction amount adjusting valves 27 and 28 are attached. In addition, 30 is a connecting pipe for connecting the introduction portion 21 to the fluid flow path, and 31 is an arc-shaped pressurization formed on the inner surface of the introduction mixture space forming cylinder 29 and communicating with the pressurized gas-liquid introduction hole 23. A liquid guide groove, 32 is a joining convex portion formed at an end of the introduced substance mixing space forming cylinder 29, and 33 is a joining stopper for joining the introducing portion 21 and the introduced substance mixing space forming cylinder 29. It is.
[0080]
Example 2 (Bubble crushing and bubbling nozzle)
  FIG. 18 shows an embodiment of the bubble crushing and bubble mixing nozzle 40, in which a gas introduction hole 42 is formed in the central portion of the introduction portion 41, and a plurality of pressurized liquid introduction holes 43 are formed around it. A gas introduction pipe 44 is provided on the side of the introduction part 41 to allow outside air to communicate with the gas introduction hole 42, and the gas introduction hole 42 on the pressurized liquid introduction hole 43 side is closed with a Meclavis 45. The peripheral surface 43a on the inflow side of the pressurized liquid introduction hole 43 is rounded. The pressurized liquid introduction hole 43 and the gas introduction hole 42 of the introduction part 41 are discharged into a common bubble crushing space 47 on the bubble generation space 46 side. As shown in FIG. 18E, the bubble crushing tube 48 inside the introduction portion 41 of the pressurized liquid introduction hole 43 has a plurality of steps on the inner wall that become discontinuously larger in diameter toward the discharge side. Moreover, the tap which the mountain is biased to the downstream is formed in the inner wall. A plurality of holes are made into a single hole in the bubble crushing space 47 on the outlet side. In the figure, 49 is a connecting pipe, and 50 is a gas introduction amount adjusting valve.
[0081]
Example 3 (Bubble grinding nozzle)
  FIG. 19 shows an embodiment of the bubble crushing nozzle 60, which does not have a gas introduction hole for introducing outside air into the introducing portion 61, and directly applies the bubble crushing space 64 from the pressurized liquid introduction hole 62 through the bubble crushing tube 63. Compressed liquid is discharged, and is included in the pressurized liquid by the combined cavitation action of the step where the diameter is discontinuously increased in the bubble crushing tube 63, the tap where the mountain is biased downstream, and the bubble crushing space 64 The bubbles of several 100 μm are made finer to about 10 μm and discharged as microbubbles. The bubble crushing nozzle 60 is 1 kg / cm.²When a certain amount of pressurized water is passed, it also functions as a gas-liquid separation nozzle that separates dissolved gas from the liquid in a mist form. In the figure, 62a is a rounded side surface on the inflow side of the pressurized liquid introduction hole 62, and 65 is a connecting pipe.
[0082]
C. Auxiliary equipment
Example 1 (loading container)
  FIG. 20 shows the structure of the loading container 70 when the introduction part 1 of the microbubble generating nozzle 10 according to the first embodiment is used alone.
[0083]
  This loading container 70 is a loading container when used for the purpose of discharging into the liquid, and can be easily detached from the connecting pipes 15 and 19 by using screws or the like at both ends of the container. It is free. Further, by providing the misalignment prevention rail 71, the rotation of the introduction portion 1 can be prevented. In the figure, 72 is a gas introduction tube insertion hole, and 73 is a packing.
[0084]
Example 2 (loading container)
  FIG. 21 shows the structure of the loading container 80 when the introduction unit 1 according to the second embodiment is used alone.
[0085]
  In the case of this embodiment, in contrast to the case of Embodiment 1, it is a loading container when used for the purpose of discharging into the air. 2 can be filled with an active agent or the like. In the figure, 75 is an anti-scattering net pressing rubber such as an active agent, and 76 is a net mounting cap.
[0086]
Example 3 (flow promotion cylinder)
  FIG. 22 shows the structure of the flow promoting cylinder 90 when the introduction unit 1 is loaded in the loading container 70 of the first embodiment according to the third embodiment.
[0087]
  In the flow promoting cylinder 90, the flow of water is further promoted in a closed water area or the like by attaching the loading container 70 to the center portion of the large-diameter cylinder 91 with the fixing metal fitting 92. The upstream side of the flow promoting cylinder 90 is expanded in a trumpet shape, thereby smoothing the flow of fluid to the cylinder 91. Example 4 (flow rate suppression cylinder)
[0088]
  FIG. 23 shows the structure of the flow velocity suppressing cylinder 100 according to the fourth embodiment. In this embodiment, the flow rate suppression cylinder 100 connected to the bubble generation space forming cylinder 3 joined to the discharge side of the introduction part 1 is provided with a flow rate reduction suppression hole 101, and the bubble generation space formation cylinder 3 In order to prevent turbulent flow, a flange 102 having an arcuate cross section is provided at the joint. Since the flange 102 is applied to a material having a remarkably high flow velocity according to the present invention, it is provided to prevent turbulent flow as necessary. Further, the flow rate reduction suppressing hole 101 is provided to suppress the flow rate reduction because the flow rate is reduced simultaneously with the flow velocity only by connecting a cylinder.
[0089]
Example 5 (conveyed material introduction cylinder)
  FIG. 24 shows the structure of the conveyed product introduction cylinder 110 according to the fifth embodiment. The transported article introduction cylinder 110 is connected to the bubble generating space forming cylinder 3 and connected to the connection pipe 113 by one or a plurality of (in this case, three) transported article introduction holes 111 and a transported article introduction pipe 112. Has been. In this embodiment, by connecting to the bubble generating space forming cylinder 3, the fine bubbles and the introduced substance can be conveyed to the connecting pipe terminal.
Example 6 (filler container with activator, etc.)
[0090]
  FIG. 25 shows the structure of an activator-filled container 80 according to the sixth embodiment. This embodiment is for use in the air, and the active agent or the like scattering prevention net 74 is attached to the bubble generating space forming cylinder 3 side and the discharge part side via the packing 73 and the pressing rubber 75 to activate the air. The filling space 77 of the agent etc. can be filled with the active agent etc. In the figure, 72 is a gas introduction tube insertion hole, and 76 is a cap. Further, by providing the misalignment prevention rail 71, the rotation of the introduction portion 1 can be prevented.
[0091]
Example 7 (Introductory Confirmation Tube)
  FIG. 26 shows the structure of the introduced object confirmation cylinder 120 according to the seventh embodiment. In this embodiment, the introduced substance confirmation cylinder 120 is connected in the middle of the pipe of the connection cylinder 19 (downstream position of the bubble generating space forming cylinder 3), and the glass or transparent plastic confirmation window 121 is connected by the window material pressing metal 122. It is sealed. The confirmation windows 121 are preferably provided on both sides of the pipe.
[0092]
  When a nozzle is attached in the middle of piping, the amount of air can be adjusted without checking the bubble generation state of the terminal. Further, by providing windows 121 on both sides, it is easy to check the interior by illuminating from the opposite side and transmitting light.
[0093]
Example 8 (flow rate adjusting cylinder)
  FIG. 27 shows the structure of the flow rate adjusting cylinder 130 according to the eighth embodiment. In the present embodiment, by attaching the flow rate adjusting cylinder mounting auxiliary tool 132 having the flow rate decrease suppressing hole 131 formed on the outer periphery of the discharge port side of the bubble generating space forming cylinder 3 joined to the discharge side of the introduction portion 1, When the opening ratio of the flow rate reduction suppression hole 131 by sliding of the flow rate adjusting cylinder 130 and the space length from the discharge surface of the bubble generating space forming cylinder 3 to the discharge surface of the flow rate adjusting cylinder 130 can be adjusted and used for a bubble jet bus or the like The flow rate can be adjusted easily. In the figure, the bubble generating space forming cylinder 3 and the flow velocity adjusting cylinder attaching auxiliary tool 132 are formed separately and are integrated by fitting them together, but they are integrally formed from the beginning. You can also.
[0094]
Example 9 (micro bubble curtain generating nozzle)
  FIG. 28 shows the structure of a microbubble curtain generating nozzle 140 according to the ninth embodiment. The nozzle 140 has a width from the circular nozzle mounting portion 141 for joining to the bubble generating space forming cylinder 3 so as to widen toward the bubble discharge port 142 side, and its height is tapered. Is provided with a bubble guide plate 143. In this embodiment, the bubbles can be ejected into the liquid in a planar manner by connecting to the bubble generating space forming cylinder 3.
[0095]
Example 10 (Air adjustment valve)
  FIG. 29 shows the structure of an air adjustment valve 150 according to the tenth embodiment. A very small amount of gas is required to generate microbubbles. For this reason, in this embodiment, the air hole 158 in the air adjustment cock 153 has an elliptical shape so that the fine adjustment of the region where the microbubbles are generated can be easily performed. In the figure, 151 is an outer cylinder part, 152 is an inner cylinder part, 153 is an air adjustment cock, 154 is a fully open / closed stopper, 155 is a gas introduction pipe connection part, 156 is a seal ring, 157 is an inner cylinder part connection part, 158 A vent hole 159 is a reduced section for connecting the vent hole cross section.
[0096]
Example 11 (Air intake filter)
  FIG. 30 shows the structure of an air intake filter 160 according to the eleventh embodiment. In particular, when a porous material is used for the gas introduction hole 5, there is a possibility of clogging with the introduced air. For this reason, a perforated filter for preventing clogging of the porous material is connected to the gas introduction hole 5. In FIG. 30, 161 is a filter outer cylinder, 162 is a cap, 163 is a net stopper, 164 is a filter holding net, 165 is a filter receiving projection, 166 is a filter, 167 is an inner cylinder connection part, and 168 is a vent hole. is there.
[0097]
Example12(Bubble discharge direction changing elbow)
  When the nozzle is used in parallel with the water surface, that is, in a horizontal direction with respect to the water surface, the following problem occurs.
[0098]
  In particular, when a plurality of gas introduction holes in the bubble generation space are provided in the large-diameter nozzle, the depth from the water surface, that is, the water pressure differs in each gas introduction hole. For this reason, the gas introduction hole closer to the water surface is likely to generate bubbles, whereas the deeper gas introduction hole is less likely to generate bubbles. This makes it difficult to generate bubbles with the same diameter.
[0099]
  In this embodiment, as shown in FIG. 31, the nozzle introduction portion 1 is attached downward, that is, in a direction perpendicular to the water surface, and an elbow 170 is used to horizontally change the direction of the bubbles. Thereby, the depth (water pressure) from the water surface to each gas introduction hole becomes the same, and the discharge direction is converted into the horizontal direction by using the elbow 170. This makes it possible to generate bubbles with a uniform size even in a large-diameter nozzle.
[0100]
Example13(Bubble dispersion nozzle for changing bubble discharge direction)
  Example12For the same purpose, by attaching a microbubble dispersion nozzle 180 shown in FIG. 32, a large number of microbubbles can be dispersed in multiple directions and discharged. This microbubble dispersion nozzle is provided with a hemispherical bubble dispersion projection 181 directly below the vertically installed microbubble generation nozzle 10 and with a bubble discharge port 182 in the horizontal direction.
[0101]
Example14(Multiple nozzle loading tool)
  FIG. 33 and FIG. 34 show an embodiment of a multi-nozzle loading device in which a plurality of micro-bubble generating nozzles are loaded to increase the generation amount of micro bubbles as a whole.
[0102]
  Specifically, the multi-nozzle loading device 190 is provided with a plurality of holes for loading three micro-bubble generating nozzles in this example, and the micro-bubble generating nozzle 10 as shown in FIG. 35 is loaded. Is done. In the figure, 1 is an introduction portion, 1a is a nozzle fixing flange, 1b is a nozzle fixing projection, 2 is a bubble generation space, 3 is a bubble generation space forming cylinder, 4 is a pressurized liquid introduction hole, and 5 is a gas introduction Hole, 6 is a gas introduction pipe, 7 is a gas introduction amount adjusting valve, 11 is a gas introduction hole Meclavis, 12 is a pressurized liquid guiding groove, 191 is a nozzle fixture, 192 is a nozzle fixture mounting recess, and 193 is a nozzle The concave portion for use, 194 is packing, and 195 is a gas introduction pipe.
[0103]
  According to this multi-nozzle loading tool, since a plurality of nozzles can be freely attached and detached, the jet output and the amount of bubbles can be controlled in accordance with the pump capacity. Further, the pressure applied to each nozzle can be made constant.
[0104]
Example15(Multiple nozzle loading tool)
  FIG. 36 shows another embodiment of a multi-nozzle loading tool for loading a plurality of microbubble generating nozzles 10. The multi-nozzle loading device 200 is obtained by mounting a plurality of microbubble generating nozzles 10 on the side of a straight pipe 201 for introducing pressurized gas.
[0105]
Example16(Gas introduction tube assembly chamber)
  FIG. 37 shows an example of a gas introduction tube assembly chamber 210 that integrates gas introduction into a plurality of nozzles.
[0106]
  In the figure, 211 is an upper part of the outer cylinder of the collecting chamber, 212 is a lower part of the outer cylinder of the collecting chamber, 213 is a gas introduction pipe connecting part, 214 is a vent hole, 215 is a filter receiving convex part, 216 is a filter, 217 is a gas introduction amount adjusting valve. is there.
[0107]
  According to the present embodiment, when a plurality of nozzles are concentrated and installed in one place, the connection pipes for introducing gas can be combined into one. Moreover, the gas introduction amount of a plurality of nozzles can be adjusted at one place. If necessary, the filter can be loaded inside. The main body and the gas introduction amount adjusting valve can be separately provided.
D. Application examples
[0108]
<First embodiment> (bath)
  FIG. 38 shows a first embodiment of the present invention, in which a bubble generating device 330 is attached to the water intake port 310 and the discharge port 320 of the bathtub 300. 38A is a cross-sectional view of the bathtub mounting portion, FIG. 38B is an enlarged cross-sectional view of the water intake port portion, FIG. 38C is an enlarged cross-sectional view of the discharge port portion, and FIG. 38D is an enlarged cross-sectional view of the discharge port attachment hose.
[0109]
  In this embodiment, the bubble generating device 330 includes a circulation pump 301, a microbubble generating nozzle 10, and a bubble crushing / bubble mixing nozzle 40 (or a bubble crushing nozzle 60). In the present embodiment, the microbubble generating nozzle 10 has a diameter of the introduction part 1 of 20 mm, a length of 40 mm, a diameter of the pressurized liquid introduction hole 4 of 7 mm × 3, a diameter of the gas introduction hole 5 of 1 mm, and a bubble The outer diameter of the generating space forming cylinder 3 is 20 mm, the length is 30 mm, and the inner diameter of the pressurized liquid guiding groove 12 is increased to 7.0 mm, 7.5 mm, and 8.0 mm by two steps, thereby generating a bubble generating space. 11 has a structure shown in FIG. 11 in which the diameter is increased to 10.0 mm, 10.5 mm, and 11.0 mm by two steps. The bubble crushing / bubble mixing nozzle 40 has a diameter of 15 mm, a length of 30 mm, and a diameter of the pressurized liquid introduction hole 43 of 1.2 mm, 1.5 mm, and 1.8 mm. Nine gas inlet holes 42 having a diameter of 1 mm and having the structure shown in FIG. 18 were used.
[0110]
  In the figure, 302 is a gas introduction pipe, 303a and 303b are gas introduction amount adjusting valves, and 15 is a connection pipe. As shown in FIG. 38 (b), the intake port 310 is fitted with an intake port connector 311, an intake filter attaching / detaching device 312, and an intake filter 313, and the connection pipe 15 is connected to the intake port connector 311. As shown in FIG. 38C, the discharge port 320 is equipped with a discharge port connector 321 and a discharge port attachment 322, and the connection pipe 15 is connected to the discharge port connector 321. A discharge port attachment hose 323 comprising a discharge port attachment hose fitting 324, a hose 325, and a hose tip protector 326 as shown in FIG. 38 (d) can be attached to the discharge port attachment 322, and can be attached to any part of the human body. Microbubbles are irradiated so that the massage function can be applied to the human body.
[0111]
  In this embodiment, when the apparatus is operated, microbubbles are first mixed into the suction water from the microbubble generating nozzle 10 attached to the suction side. At this time, the amount of mixed microbubbles is not necessarily large.
[0112]
  The gas-liquid mixed with microbubbles is crushed more finely by the blades in the pump 301. Normally, when bubbles are mixed in the pump 301, abnormal noise and noise are generated. However, since this apparatus is mixed in a miniaturized state, this kind of sound hardly occurs. Moreover, almost no decrease in pressure is observed as well.
[0113]
  The gas-liquid mixed with bubbles further crushed in the pump 301 is guided to the bubble crushing / bubble mixing nozzle 40 attached to the discharge port. Due to the cavitation action of this nozzle, the bubbles are further crushed, and most of the bubbles become microbubbles of about 10 μm. In addition, the adjustment valve 303a attached to the nozzle 10 is adjusted and fixed in a micro-sized fine bubble generation state, and by adjusting the adjustment valve 303b, it is possible to freely generate bubbles from micro-sized bubbles to bubbles of several mm. It is.
[0114]
  In this embodiment, instead of the regulating valve 303a, a gas introduction hole with a fixed flow rate may be used.
[0115]
<Second embodiment> (bath)
  FIG. 39 shows a second embodiment of the present invention, in which an external bubble bath device 340 is attached to a bathtub 300. This bubble bath apparatus 340 is configured by attaching a hose fitting 350 to the wall surface of the bathtub 300 and connecting it to the pump 301 by connecting pipes 15 and 19 (hose). In the figure, 360 is a water intake section, and 370 is a discharge section. As shown in FIG. 40, the hose attachment 350 is provided with three attachment position adjustment grooves on the hose attachment support plate 351 whose upper part is bent in a U-shape, and the attachment position fixing knob 353 and the generating nozzle fixture 354 are attached. Scratch prevention rubber 355 is pasted on the back side of the portion bent in a U-shape. A connecting member 356 provided with a hose through hole 357 is attached to the upper and lower attachment position fixing knobs 353, and is sucked to the inner wall of the bathtub by a suction cup 358. The generating nozzle fixture 354 at the center is fixed to the hose attachment support plate 351 by the attachment position fixing knob 353 from the back side, and the bubble crushing / bubble mixing nozzle 40 or the bubble crushing nozzle 60 is attached.
[0116]
  The details of the water intake unit 360 are shown in FIG. A connection pipe 15 to the pump 301 is connected to a water intake filter connection part 361 by a hose connection part 371, and a water intake filter loading cap 362 to which a water intake filter 364 is attached is attached to the tip. Reference numeral 363 denotes a water intake filter holding net.
[0117]
  The detail of the discharge part 370 is shown in FIG.41 (b). The connecting pipe 19 from the pump 301 is connected to the nozzle mounting elbow pipe 372 by a hose connecting portion 371, and the bubble crushing / bubble mixing nozzle 40 or the bubble crushing nozzle 60 is attached to the tip thereof. At the tip, a flow rate adjusting cylinder 373 provided with a flow rate reduction suppressing hole 374 is attached via a flow rate adjusting cylinder attaching auxiliary tool 375.
[0118]
<Third embodiment> (bath)
  FIG. 42 shows a third embodiment of the present invention, and shows a bubble bath apparatus 370 having a built-in pump 301 that is submerged in a bathtub 300 for use. In the present embodiment, a water intake slit 381 and a discharge port attachment mounting portion 383 are provided in the device case 380, a water intake filter 364 is attached to the water intake slit 381 with a water intake filter stopper 382, and microbubbles are provided in the vicinity of the water intake filter 364. The generating nozzle 10 is arranged, connected to the pump 301 by the connecting pipe 15, and the discharge port attachment attachment 322 connected to the bubble crushing / bubble mixing nozzle 40 or the bubble crushing nozzle 60 is attached to the discharge port attachment mounting part 383. It is. A discharge port attachment hose 323 can be connected to the discharge port attachment fitting 322. The gas introduction pipe 302 is taken out of the bathtub 300 and takes in air. In the figure, reference numeral 384 denotes an operation unit for operating the switch 385 of the pump 301 from the outside.
[0119]
<Fourth embodiment> (bath)
  FIG. 43 shows a fourth embodiment of the present invention, in which the bubble crushing / bubble mixing nozzle 40 or the bubble crushing nozzle 60 in the first embodiment is omitted, and the microbubble generating nozzle 10 is attached to the discharge side of the pump 301. It is a thing.
[0120]
<Fifth embodiment> (bath)
  FIG. 44 shows a fifth embodiment of the present invention, in which the bubble crushing / bubble mixing nozzle 40 or the bubble crushing nozzle 60 in the second embodiment is omitted and the microbubble generating nozzle 10 is attached to the discharge portion 370. It is.
[0121]
<Sixth embodiment> (bath)
  FIG. 45 shows a sixth embodiment of the present invention, in which the bubble crushing / bubble mixing nozzle 40 or the bubble crushing nozzle 60 in the third embodiment is omitted, and the microbubble generating nozzle 10 is attached to the discharge side of the pump 301. It is a thing.
[0122]
  In these 4th-6th Example, although the quantity and diameter of a bubble are inferior compared with the case where the two nozzles of the 1st-3rd Example are provided, compared with the conventional bubble bath, it is based on a microbubble. The effect can be expected sufficiently.
[Brief description of the drawings]
[0123]
FIG. 1 shows a first embodiment of a microbubble generating nozzle according to the present invention.
FIG. 2 shows a second embodiment of the microbubble generating nozzle of the present invention.
FIG. 3 shows a third embodiment of the microbubble generating nozzle of the present invention.
FIG. 4 shows a fourth embodiment of the microbubble generating nozzle according to the present invention.
FIG. 5 shows a fifth embodiment of the microbubble generating nozzle of the present invention.
FIG. 6 shows a sixth embodiment of the microbubble generating nozzle of the present invention.
FIG. 7 shows a seventh embodiment of the microbubble generating nozzle of the present invention.
FIG. 8 shows an eighth embodiment of the microbubble generating nozzle of the present invention.
FIG. 9 shows a ninth embodiment of the microbubble generating nozzle according to the present invention.
FIG. 10 shows a tenth embodiment of a microbubble generating nozzle according to the present invention.
FIG. 11 shows an eleventh embodiment of the microbubble generating nozzle according to the present invention.
FIG. 12 shows a twelfth embodiment of the microbubble generating nozzle according to the present invention.
FIG. 13 shows a thirteenth embodiment of the microbubble generating nozzle of the present invention.
FIG. 14 shows a fourteenth embodiment of the microbubble generating nozzle according to the present invention.
FIG. 15 shows a fifteenth embodiment of the microbubble generating nozzle according to the present invention.
FIG. 16 shows a sixteenth embodiment of the microbubble generating nozzle according to the present invention.
FIG. 17 shows an embodiment of a gas-liquid mixing nozzle.
FIG. 18 is a diagram showing the structure of a bubble crushing / bubble mixing nozzle used in the present invention.
FIG. 19 is a diagram showing the structure of a bubble crushing nozzle used in the present invention.
FIG. 20 shows an embodiment of a loading container according to the present invention.
FIG. 21 shows an embodiment of a loading container according to the present invention.
FIG. 22 shows an embodiment of a flow promoting cylinder according to the present invention.
FIG. 23 shows an embodiment of a flow rate suppressing cylinder according to the present invention.
FIG. 24 shows a conveyed product introduction cylinder according to the present invention.
FIG. 25 shows an active agent filling container according to the present invention.
FIG. 26 shows an introduction confirmation cylinder according to the present invention.
FIG. 27 shows a flow rate adjusting cylinder according to the present invention.
FIG. 28 shows a microbubble curtain generating nozzle according to the present invention.
FIG. 29 shows an air adjustment valve according to the present invention.
FIG. 30 shows an air intake filter according to the present invention.
FIG. 31 is a front view and a longitudinal sectional view showing an embodiment of a bubble discharge direction changing elbow according to the present invention.
FIG. 32 is a front view, a longitudinal sectional view, and an AB sectional view showing an embodiment of a bubble dispersion nozzle for changing the direction of bubble ejection according to the present invention.
FIG. 33 is a cross-sectional view showing an embodiment of a multi-nozzle loading device of the present invention.
34 is a cross-sectional view taken along line AA and BB of the embodiment shown in FIG. 33. FIG.
35 is a plan view, AA sectional view, bottom view and BB sectional view showing the structure of a microbubble generating nozzle used in the embodiment of FIG. 33. FIG.
FIG. 36 is a perspective view showing another example of the multiple nozzle loading device of the present invention.
37 is a plan view, an AA cross-sectional view, a bottom view, and a BB cross-sectional view showing an embodiment of the gas introduction tube assembly chamber of the present invention. FIG.
FIG. 38 is a cross-sectional view showing a bathtub equipped with a bubble bath apparatus according to the first embodiment of the present invention.
FIG. 39 is a cross-sectional view showing a bathtub equipped with a bubble bath apparatus according to a second embodiment of the present invention.
FIG. 40 is a detailed view of the hose fitting.
FIG. 41 is a cross-sectional view showing details of a water intake part and a discharge part.
FIG. 42 is a cross-sectional view showing a bathtub equipped with a bubble bath apparatus according to a third embodiment of the present invention.
FIG. 43 is a cross-sectional view showing a bathtub equipped with a bubble bath apparatus according to a fourth embodiment of the present invention.
FIG. 44 is a cross-sectional view showing a bathtub equipped with a bubble bath apparatus according to a fifth embodiment of the present invention.
FIG. 45 is a cross-sectional view showing a bathtub equipped with a bubble bath apparatus according to a sixth embodiment of the present invention.
[Explanation of symbols]
[0124]
    1: Introduction
    2: Bubble generation space
    3: Cylinder for forming bubble generation space
    4: Pressurized liquid introduction hole
    5: Gas introduction hole
    6: Gas introduction pipe
    7: Gas introduction amount adjustment valve
  10, 10A-N: Microbubble generating nozzle
  60: Bubble crushing nozzle
  61: Pressurized liquid introduction hole
  62: Pressurized liquid introduction hole
  63: Bubble crushing tube
  64: Connection pipe
  65: Bubble crushing space
300: Bathtub
301: Pump
310: Water intake
320: Discharge port
330: Bubble generator

Claims (14)

Microbubble discharge having a cylindrical bubble generation space in which pressurized liquid and gas are introduced from the introduction portion, and the introduced gas is dispersed as microbubbles in the discharge water flow. In the nozzle,
A plurality of pressurized liquid introduction holes for introducing pressurized liquid into the bubble generation space are opened on the end surface of the introduction part on the bubble generation space side , and further, gas inserted from the side opening of the introduction part The gas introduction port that is formed by the introduction pipe and opens a gas introduction hole that introduces the gas formed by the plurality of pressurized liquid introduction holes into the bubble generation space, and communicates with the gas introduction hole. An adjustment valve that adjusts the amount of gas introduced into the pipe is provided.
A microbubble generating nozzle, characterized in that a linear pressurized liquid guiding groove communicating with a pressurized liquid introducing hole or a pressurized liquid guiding groove accompanied by a contracted flow is provided on the inner surface of a bubble generating space forming cylinder . A tap in which a crest is biased downstream is formed in a pressurized liquid guide groove and a bubble generating space inner wall in a bubble generating space forming cylinder on a bubble discharge side of a pressurized liquid introducing hole. The microbubble generating nozzle according to claim 1. The microbubble generating nozzle according to claim 1 or 2 , wherein a porous plug is attached to the opening of the gas introducing hole on the bubble generating space side . 4. The microbubble generating nozzle according to claim 3 , wherein a gas bypass hole that bypasses the porous plug and directly communicates with the bubble generating space is provided in the gas introducing hole . A stepped portion whose diameter increases discontinuously toward the downstream side is provided in the pressurized liquid guiding groove and the inner wall of the bubble generating space in the bubble generating space forming cylinder on the bubble discharge side of the pressurized liquid introduction hole. The microbubble generating nozzle according to claim 1, wherein the nozzle is a microbubble generating nozzle. It has a bottomed casing that is attached to the bubble discharge side and has a diameter larger than the bubble generation space of the nozzle, has a hemispherical bubble dispersion projection at the center of the bottom of the casing, and has a bubble discharge on the side peripheral wall. The microbubble generating nozzle according to any one of claims 1 to 5, wherein an outlet is provided . The microbubble generating nozzle according to any one of claims 1 to 6, further comprising a stepped portion whose diameter increases discontinuously as it goes downstream of the pressurized liquid introduction hole . 8. The microbubble generating nozzle according to claim 7, wherein a tap having a peak deviated downstream is formed on the inner wall of the pressurized liquid introduction hole . A pump that sucks water in the bathtub and discharges the water into the bathtub again, and a discharge side water channel of this pump, mix the air in the atmosphere with the water pumped by the pump, A bubble bath apparatus comprising the microbubble generating nozzle according to any one of claims 1 to 8, which discharges bubbles. The pump which inhales the water in a bathtub, and discharges water in a bathtub again, and the air in the atmosphere which is provided in the suction side of this pump and mixes in the intake water is described in any one of Claims 1-8. A microbubble generating nozzle, and a bubble crushing nozzle that is provided in the discharge side water channel of the pump and that finely converts the air in the air and the bubble mixed water pumped by the pump to discharge the microbubble into the bathtub. The bubble crushing nozzle has a plurality of pressurized liquid introduction holes formed in a pressurized liquid introduction portion, and a discharge side opening of the plurality of pressurized liquid introduction holes is formed on a discharge side of the introduction portion. A bubble bath device characterized in that it communicates with a common bubble crushing space . The bubble bath device according to claim 10, wherein a stepped portion having a diameter discontinuously increasing toward the downstream side of the pressurized liquid introduction hole of the bubble crushing nozzle is provided . The bubble bath apparatus according to claim 10 or 11, wherein a tap having a peak position biased downstream is formed on an inner wall of the pressurized liquid introduction hole of the bubble crushing nozzle . Bubble crushing nozzle. The bubble crushing nozzle has a plurality of pressurized liquid introduction holes in the introduction part of the pressurized liquid and gas. And at least one gas introduction hole, and the discharge side openings of the plurality of pressurized liquid introduction holes are communicated with a common bubble generation space formed on the discharge side of the introduction part, and each pressurized liquid introduction The bubble bath device according to claim 10, wherein the hole is provided with a stepped portion whose diameter increases discontinuously as it goes downstream. 14. The bubble bath device according to claim 13, wherein a tap having a peak deviated downstream is formed on the inner wall of the pressurized liquid introduction hole .

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