Microbubble generating device and cleaning device

Abstract

The utility model discloses a microbubble generating device and a cleaning device. The microbubble generating device comprises a gas-liquid mixing part and a microbubble generating part, the gas-liquid impinging flow channel is connected with the gas-liquid mixing outlet, and the gas-liquid impinging flow channel is designed in a non-straight mode. The air and the cleaning water can be mixed in the gas-liquid mixing part to generate bubbles with large volumes, the bubbles are further impacted and split in the gas-liquid impinging runner designed in a non-straight manner to form a large number of micro-bubbles, the micro-bubbles are finally diffused and sprayed out from the expanded-surface nozzle, and the micro-bubbles are further refined in the diffusion and spraying process, so that the cleaning effect is improved. The microbubble generating device is applied to the cleaning device of the intelligent closestool, the touch feeling of a user can be better during cleaning, the cleaning effect is improved, in addition, the microbubbles are generated through the non-straight-movement design of the gas-liquid impact flow channel, the situation that the microbubbles are generated through the design of small overflowing holes is avoided, and the cleaning effect is improved. Therefore, the microbubble generating device is not easy to block, and the flow resistance is smaller.

Description

Technical Field

[0001] The present application relates to the technical field of toilet devices, and particularly to a microbubble generating device and a cleaning device. Background Art

[0002] Intelligent toilets have various cleaning functions such as hip washing and feminine washing.

[0003] Among them, when the existing intelligent toilets are cleaning, the cleaning water contacts the user, resulting in poor tactile sensation for the user and unsatisfactory cleaning effect. It is urgent to improve the cleaning water path to provide a better cleaning experience for the user. For example, a cleaning water path with a microbubble function is adopted. However, due to the disadvantages of such cleaning water paths, such as few bubbles, easy blockage, large flow resistance, and low applicability, a better solution is needed to solve the above problems. Summary of the Utility Model

[0004] The main technical problem to be solved by the present application is to provide a microbubble generating device and a cleaning device to solve the above technical problems.

[0005] To solve the above technical problems, the technical solution adopted by the present application is to provide a microbubble generating device, which includes: a gas-liquid mixing part, one end of the gas-liquid mixing part has an air inlet and a liquid inlet, and the other end of the gas-liquid mixing part has a gas-liquid mixing outlet; a microbubble generating part, the microbubble generating part includes a gas-liquid impact flow channel and an enlarged surface nozzle connected to the gas-liquid impact flow channel, the gas-liquid impact flow channel is connected to the gas-liquid mixing outlet, wherein the gas-liquid impact flow channel is not designed to be straight.

[0006] In a possible implementation manner, the microbubble generating device further includes: a fragmentation part, the fragmentation part is formed with a fragmentation flow channel, the gas-liquid impact flow channel is connected to the gas-liquid mixing outlet through the fragmentation flow channel, and the radial dimension of the fragmentation flow channel is larger than the radial dimension of the gas-liquid impact flow channel; preferably, the gas-liquid impact flow channel is detachably connected to the fragmentation flow channel; preferably, the gas-liquid impact flow channel and the gas-liquid mixing outlet are integrally designed.

[0007] In a possible implementation manner, the gas-liquid mixing part includes: a liquid inlet pipe and a mixing pipe connected to the liquid inlet pipe; wherein, one end of the liquid inlet pipe connected to the mixing pipe has a gradually decreasing dimension along the liquid flow direction; one end of the mixing pipe connected to the liquid inlet pipe has a gradually increasing dimension along the gas-liquid flow direction; an air inlet pipe, the air inlet pipe is arranged on one end of the mixing pipe connected to the liquid inlet pipe, and one end of the air inlet pipe connected to the mixing pipe has a gradually decreasing dimension along the gas flow direction.

[0008] In a possible implementation manner, the liquid inlet pipe and the mixing pipe are arranged collinearly; the included angle between the air inlet pipe and the liquid inlet pipe is an acute angle.

[0009] In a possible implementation, the gas-liquid impinging flow channel includes an impinging section and a gentle section connected to the impinging section. The impinging section is connected to the fragmentation flow channel, and the gentle section is connected to the extended surface nozzle. The impinging section has a non-straight design, and the gentle section has a straight design.

[0010] In a possible implementation, the impinging section has a bent design and / or a curved design.

[0011] In a possible implementation, the impinging section includes one or more non-straight flow channels designed in parallel.

[0012] In a possible implementation, the outlet of the non-straight flow channel is located on the inner wall of the gentle section, so that the fluid medium flows along the inner wall in the gentle section.

[0013] In a possible implementation, the gas-liquid impinging flow channel includes a housing and a core body clamped and fixed in the housing. The core body forms the impinging section and the gentle section connected to the impinging section. The core body also forms an extended surface nozzle connected to the gentle section. The extended surface nozzle is conical, and the size of the extended surface nozzle gradually increases along the ejection direction.

[0014] To solve the above technical problems, another technical solution adopted in this application is to provide a cleaning device, which includes a microbubble generating device, a distribution valve, and a cleaner. The microbubble generating device is the above-mentioned microbubble generating device; the distribution valve and the cleaner, the distribution valve is connected to the microbubble generating device, and the distribution valve is also connected to the cleaner.

[0015] The beneficial effects of this application are as follows: Different from the prior art, this application provides a microbubble generating device and a cleaning device. The microbubble generating device includes a gas-liquid mixing part and a microbubble generating part. One end of the gas-liquid mixing part has an air inlet and a liquid inlet, and the other end of the gas-liquid mixing part has a gas-liquid mixing outlet. The microbubble generating part includes a gas-liquid impinging flow channel and an extended surface nozzle connected to the gas-liquid impinging flow channel. The gas-liquid impinging flow channel is connected to the gas-liquid mixing outlet. Among them, the gas-liquid impinging flow channel has a non-straight design. As described above, air and cleaning water can be mixed in the gas-liquid mixing part to generate bubbles with a relatively large volume. The bubbles are further impinged and split in the non-straight gas-liquid impinging flow channel to form a large number of microbubbles. The microbubbles finally diffuse and eject from the extended surface nozzle. During the diffusion and ejection process, the microbubbles are further refined, and finally a microbubble cleaning water flower in a milk state is presented. When the microbubble generating device is applied to the cleaning device of a smart toilet, the user's touch feeling during cleaning is better, and the cleaning effect is improved. In addition, the non-straight design of the gas-liquid impinging flow channel is used to generate microbubbles, avoiding the design of smaller flow pores to generate microbubbles, so that the microbubble generating device is not easily blocked and has a smaller flow resistance. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 Structural schematic diagram of an embodiment of the microbubble generating device of the present application;

[0018] Figure 2 For Figure 1 Structural schematic diagram of the gas-liquid mixing part in the microbubble generating device;

[0019] Figure 3 For Figure 1 Structural schematic diagram of the housing of the microbubble generating part in the microbubble generating device;

[0020] Figure 4 For Figure 1 Structural schematic diagram of the core body of the microbubble generating part in the microbubble generating device;

[0021] Figure 5 Structural schematic diagram of an embodiment of the cleaning device of the present application.

[0022] Among them, 100 / 310, microbubble generating device; 10, gas-liquid mixing part; 20, microbubble generating part; 30, fragmentation part; 11, liquid inlet pipe; 111, liquid inlet; 12, gas inlet pipe; 121, gas inlet; 13, mixing pipe; 131, gas-liquid mixing outlet; 21, housing; 22, core body; 220, gas-liquid impact flow channel, 221, impact section; 222, gentle section; 230, enlarged surface nozzle; 300, cleaning device; 320, cleaner. Detailed implementation manners

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0024] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "the" and "said" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless clearly stated otherwise in the above. "Multiple" generally includes at least two, but does not exclude the case of including at least one.

[0025] It should be understood that the term "and / or" used herein is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this text generally indicates that the associated objects before and after are in an "or" relationship.

[0026] It should be understood that the terms "comprising", "including" or any other variants used herein are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "including..." do not exclude the existence of additional identical elements in the process, method, article or device comprising the said elements.

[0027] In the existing intelligent toilet, when performing the cleaning function, the cleaning water contacts the user, resulting in poor user touch and unsatisfactory cleaning effect.

[0028] Based on the above problems, the present application proposes a microbubble generating device and a cleaning device. By mixing and colliding cleaning water and air in the gas-liquid mixing part to generate bubbles, and further impacting and fragmenting the bubbles in the microbubble generating part to form microbubbles, a large number of microbubbles are generated in the cleaning water, which can effectively solve the above problems.

[0029] The following will describe in detail a microbubble generating device and a cleaning device provided by the present application with reference to the accompanying drawings and embodiments.

[0030] Among them, the microbubble generating device of the present application can be specifically applied to any reasonable device that needs to discharge water, such as a faucet, a shower head, a toilet cleaning device, etc. However, for the convenience of description, the following microbubble generating devices will be described by taking the application in the toilet cleaning device as an example.

[0031] The present application provides a microbubble generating device. Please refer to Figures 1 to 4 , Figure 1 is a schematic structural diagram of an embodiment of the microbubble generating device of the present application; Figure 2 is Figure 1 a schematic structural diagram of the gas-liquid mixing part in the microbubble generating device; Figure 3 is Figure 1 a schematic structural diagram of the housing of the microbubble generating part in the microbubble generating device; Figure 4 is Figure 1 a schematic structural diagram of the core body of the microbubble generating part in the microbubble generating device. In a specific embodiment, the microbubble generating device 100 includes a gas-liquid mixing part 10 and a microbubble generating part 20.

[0032] One end of the gas-liquid mixing part 10 is provided with an air inlet 121 and a liquid inlet 111, and the other end of the gas-liquid mixing part 10 is provided with a gas-liquid mixing outlet 131. The microbubble generating part 20 includes a gas-liquid impact flow channel 220 and a widened spraying nozzle 230 connected to the gas-liquid impact flow channel 220. The gas-liquid impact flow channel 220 is connected to the gas-liquid mixing outlet 131, wherein the gas-liquid impact flow channel 220 is not designed to be straight. Specifically, the air inlet 121 of the gas-liquid mixing part 10 is used to connect to an air pump, the liquid inlet 111 is used to connect to a liquid pump, and the gas-liquid mixing part 10 is used to fully mix and initially collide the incoming air and cleaning water. In the gas-liquid mixing part 10, a large number of relatively large bubbles are generated after the air and cleaning water are mixed and initially collided. The bubbles and the gas-liquid mixture that has not been completely converted into bubbles enter the microbubble generating part 20 from the gas-liquid mixing outlet 131. Among them, the microbubble generating part 20 is used to further collide the bubbles and the gas-liquid mixture, so that the gas-liquid mixture is completely converted into bubbles after collision and the bubbles are continuously split after collision, forming a large number of microbubbles. In this embodiment, the gas-liquid impact flow channel 220 is not designed to be straight. Specifically, the gas-liquid impact flow channel 220 can be a curved design or a bent design. The purpose of the non-straight design is to enable the bubbles and the gas-liquid mixture to continuously collide when flowing in the gas-liquid impact flow channel 220, so that the gas-liquid mixture can be completely converted into bubbles and the bubbles can be continuously collided and split into a large number of microbubbles. A large number of microbubbles are finally diffused and ejected from the widened spraying nozzle 230. During the diffusion process, the microbubbles can be further refined, and finally present a microbubble cleaning water flower in a milk state.

[0033] Different from the prior art, the present application provides a microbubble generating device 100, which includes a gas-liquid mixing part 10 and a microbubble generating part 20. Among them, the microbubble generating part 20 includes a gas-liquid impact flow channel 220 and a widened spraying nozzle 230. As described above, air and cleaning water can be mixed in the gas-liquid mixing part 10 to generate relatively large bubbles. The bubbles are further collided and split in the non-straight gas-liquid impact flow channel 220 to form a large number of microbubbles. The microbubbles are finally diffused and ejected from the widened spraying nozzle 230. During the diffusion and ejection process, the microbubbles are further refined, and finally present a microbubble cleaning water flower in a milk state. The microbubble generating device 100 is applied to the cleaning device of a smart toilet, which can provide a better touch for users during cleaning and improve the cleaning effect. In addition, the non-straight design of the gas-liquid impact flow channel 220 is used to generate microbubbles, avoiding the design of smaller flow pores to generate microbubbles, so that the microbubble generating device 100 is not easily blocked and has a smaller flow resistance.

[0034] In this embodiment, the microbubble generating device 100 further includes a fragmentation part 30. The fragmentation part 30 is formed with a fragmentation flow channel (not labeled). The gas-liquid impact flow channel 220 is connected to the gas-liquid mixing outlet 131 through the fragmentation flow channel. The radial dimension of the fragmentation flow channel is larger than that of the gas-liquid impact flow channel 220. Specifically, the fragmentation part 30 is used to fully convert the gas-liquid mixture that has not been completely converted into bubbles in the gas-liquid mixing part into bubbles after sufficient impact, and to preliminarily split the bubbles after impact to make the bubble volume smaller. Among them, the radial dimension of the fragmentation flow channel is larger than that of the gas-liquid impact flow channel 220, so that when the fluid medium flows to the end of the fragmentation flow channel, part of the fluid medium can be rebounded by the gas-liquid impact flow channel 220, so that the fluid medium can be fully impacted and fragmented in the fragmentation flow channel. Further, in this embodiment, the fragmentation flow channel is designed to be straight. In some other embodiments, the fragmentation flow channel can also be designed to be non-straight. For example, the fragmentation flow channel can be designed to be bent or curved so that the fluid medium can fully collide when flowing in the fragmentation flow channel.

[0035] In a preferred embodiment, the gas-liquid impact flow channel 220 is detachably connected to the fragmentation flow channel; the gas-liquid impact flow channel 220 and the gas-liquid mixing outlet 131 are integrally designed. Specifically, in this embodiment, the fragmentation flow channel has an internal thread (not labeled), and the gas-liquid impact flow channel 220 has an external thread (not labeled), and the two are fixed together by screw thread matching. In some other embodiments, the fragmentation flow channel and the gas-liquid impact flow channel 220 can also be detachably fixed together through structures such as a flange structure and a clamping structure. In addition, in some other embodiments, the gas-liquid impact flow channel 220 and the fragmentation flow channel can also be integrally designed, and the gas-liquid impact flow channel 220 and the gas-liquid mixing outlet 131 can also be detachably connected, without specific limitation.

[0036] In this embodiment, the gas-liquid mixing part 10 includes: a liquid inlet pipe 11 and a mixing pipe 13 connected to the liquid inlet pipe 11; wherein, one end of the liquid inlet pipe 11 connected to the mixing pipe 13 has a gradually decreasing dimension along the liquid flow direction; one end of the mixing pipe 13 connected to the liquid inlet pipe 11 has a gradually increasing dimension along the gas-liquid flow direction; an air inlet pipe 12, the air inlet pipe 12 is arranged on one end of the mixing pipe 13 connected to the liquid inlet pipe 11, and one end of the air inlet pipe 12 connected to the mixing pipe 13 has a gradually decreasing dimension along the gas flow direction. Specifically, one end of the liquid inlet pipe 11 connected to the mixing pipe 13 has a gradually decreasing dimension along the liquid flow direction. This design makes the liquid flow velocity gradually increase when flowing through this section. When the liquid flows out of the liquid inlet pipe 11 and enters the mixing pipe 13, the liquid flow velocity increases to the maximum. According to Bernoulli's equation, when the liquid flow velocity increases, the surrounding air pressure decreases, which in turn causes the air pressure in the air inlet pipe 12 connected to the inlet end of the mixing pipe 13 to decrease. The change in air pressure also causes a change in pressure. The sudden change in pressure and flow velocity forms a shear force at the connection of the three pipes of the liquid inlet pipe 11, the air inlet pipe 12, and the mixing pipe 13, so that the gas and the liquid are fully mixed and broken in this area due to the shear force, and a large number of bubbles are formed.

[0037] In this embodiment, the liquid inlet pipe 11 and the mixing pipe 13 are arranged collinearly; the included angle between the gas inlet pipe 12 and the liquid inlet pipe 11 is an acute angle. Specifically, the purpose of arranging the liquid inlet pipe 11 and the mixing pipe 13 collinearly is to prevent the flow rate of the liquid from decreasing at the outlet of the liquid inlet pipe 11. A greater flow rate of the liquid is more likely to generate a Bernoulli effect to form a shear force, so that the gas and the liquid are fully mixed to generate bubbles. In a preferred embodiment, it is preferably that the included angle between the gas inlet pipe 12 and the liquid inlet pipe 11 is less than 35 degrees. For example, the included angle between the gas inlet pipe 12 and the liquid inlet pipe 11 can be 30 degrees, 25 degrees, etc.

[0038] In this embodiment, the gas-liquid impinging flow channel 220 includes an impinging section 221 and a gentle section 222 connected to the impinging section 221. The impinging section 221 is connected to the fragmentation flow channel, and the gentle section 222 is connected to the enlarged surface nozzle 230; the impinging section 221 is not designed to be straight, and the gentle section 222 is designed to be straight. Specifically, in the non-straight impinging section 221, the fluid medium continuously collides during the flow in the impinging section 221, so that the bubbles can split after collision to form microbubbles. Among them, the impinging section 221 can specifically be a bent design or a curved design, without specific limitation. In some other embodiments, the impinging section 221 can also be in a spiral bent shape. In the gas-liquid impinging flow channel 220, the flow direction and flow rate of the fluid medium are continuously changed, and the fluid medium becomes in the shape of microbubbles and finally flows into the gentle section 222. The gentle section 222 is designed to be straight, so that the flow rate of the fluid medium in the shape of microbubbles tends to be stable in the gentle section 222, and the bubbles of the fluid medium in the shape of microbubbles are further fragmented during the flow in the gentle section 222.

[0039] Furthermore, in this embodiment, the gas-liquid impinging flow channel 220 includes a housing 21 and a core body 22 clamped and fixed in the housing 21. The core body 22 forms an impinging section 221 and a gentle section 222 connected to the impinging section 221; the core body 22 also forms an enlarged surface nozzle 230 connected to the gentle section 222. Specifically, the housing 21 has a through structure in the middle, and the gas-liquid impinging flow channel 220 is formed inside the core body 22. The core body 22 can be specifically fixed inside the housing 21 through an interference structure, a clamping structure, etc., without specific limitation. Among them, the core body 22 can be made by injection molding with plastics having a relatively light mass and good stamping resistance. For example, the manufacturing material of the core body 22 can include one or more of ABS (terpolymer of acrylonitrile, butadiene and styrene), PC (polycarbonate), PET (polyethylene terephthalate), etc., without specific limitation.

[0040] Furthermore, in this embodiment, the impinging section 221 of the gas-liquid impinging flow channel 220 can specifically be a bent design or a curved design, without specific limitation.

[0041] Among them, the impact section 221 includes one or more non-straight flow channels designed in parallel. Specifically, a plurality of non-straight flow channels are formed inside the core body 22, so that the radial dimensions of each non-straight flow channel can be made smaller, facilitating sufficient collision of the fluid medium during flow. And the impact section 221 includes a plurality of non-straight flow channels designed in parallel, with relatively small flow resistance, less load on the liquid pump, and also reducing the risk of blockage. In some other embodiments, a non-straight flow channel can also be formed inside the core body 22, without specific limitation.

[0042] Further, in this embodiment, the outlet of the non-straight flow channel is located on the inner wall of the gentle section 222, so that the fluid medium flows along the inner wall in the gentle section 222. Specifically, the outlet of the non-straight flow channel is located on the inner wall of the gentle section 222, so that after the microbubble fluid formed by the flow in the non-straight flow channel flows into the gentle section 222, it can flow along the inner wall of the gentle section 222. Among them, the surface-expanding nozzle 230 is conical, and the size of the surface-expanding nozzle 230 gradually increases along the spraying direction. One end of the surface-expanding nozzle 230 is connected to the gentle section 222. The microbubble fluid flows along the inner wall of the gentle section 222. When spraying through the surface-expanding nozzle 230, the fluid medium of numerous microbubbles can flow and spray along the wall surface of the surface-expanding nozzle 230. Among them, the surface-expanding nozzle 230 is conical, and the size of the surface-expanding nozzle 230 gradually increases along the spraying direction, which can further refine the microbubbles during the diffusion spraying process of the fluid medium of the microbubbles.

[0043] Different from the prior art, the present application provides a microbubble generating device 100, which includes a gas-liquid mixing part 10 and a microbubble generating part 20. Among them, the microbubble generating part 20 includes a gas-liquid impact flow channel 220 and a surface-expanding nozzle 230. As described above, air and cleaning water can be mixed in the gas-liquid mixing part 10 to generate relatively large bubbles. The bubbles are further impacted and split in the non-straight gas-liquid impact flow channel 220 to form a large number of microbubbles. The microbubbles finally diffuse and spray out from the surface-expanding nozzle 230. During the diffusion spraying process, the microbubbles are further refined, and finally a microbubble cleaning water flower in a milk state is presented. The microbubble generating device 100 is applied to the cleaning device of a smart toilet, which can provide a better touch for the user during cleaning and improve the cleaning effect.

[0044] Correspondingly, the present application also proposes a cleaning device. Please refer to Figure 5 , Figure 5 which is a schematic structural diagram of an embodiment of the cleaning device of the present application. The cleaning device 300 includes a microbubble generating device 310, a distribution valve (not marked), and a cleaner 320. The microbubble generating device 310 is the microbubble generating device 310 of the above embodiment. The distribution valve is connected to the microbubble generating device 310, and the distribution valve is also connected to the cleaner 320. For the above cleaning device 300, the sprayed cleaning water flower is in a milk state, and the water flower includes numerous microbubbles, providing a better touch for the user, and the microbubbles can also improve the cleaning effect.

[0045] The above are only embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent principle transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A microbubble generating device, characterized in that: The microbubble generating device comprises: A gas-liquid mixing part, wherein one end of the gas-liquid mixing part has a gas inlet and a liquid inlet, and the other end of the gas-liquid mixing part has a gas-liquid mixing outlet; The microbubble generating part comprises a gas-liquid impact flow channel and a diffuser nozzle connected to the gas-liquid impact flow channel, the gas-liquid impact flow channel is connected to the gas-liquid mixing outlet, wherein the gas-liquid impact flow channel is non-straight design.

2. The microbubble generating device according to claim 1, characterized in that: The microbubble generating device further comprises: A fragmentation part, wherein the fragmentation part is formed with a fragmentation flow channel, the gas-liquid impact flow channel is connected to the gas-liquid mixing outlet via the fragmentation flow channel, and the radial dimension of the fragmentation flow channel is greater than the radial dimension of the gas-liquid impact flow channel; The gas-liquid impact flow channel is detachably connected to the fragmentation flow channel; The gas-liquid impact flow channel and the gas-liquid mixing outlet are designed as an integrated whole.

3. The microbubble generating device according to claim 2, characterized in that: The gas-liquid mixing unit comprises: A liquid inlet pipe and a mixing pipe connected to the liquid inlet pipe; wherein the liquid inlet pipe is connected to one end of the mixing pipe and its size gradually decreases along the liquid flow direction; the mixing pipe is connected to one end of the liquid inlet pipe and its size gradually increases along the gas-liquid flow direction; An air intake pipe is arranged on the mixing pipe and connected to one end of the liquid inlet pipe. The air intake pipe is connected to one end of the mixing pipe and its size gradually decreases along the gas flow direction.

4. The microbubble generating device according to claim 3, characterized in that: The liquid inlet pipe and the mixing pipe are arranged in a colinear manner; the included angle between the air inlet pipe and the liquid inlet pipe is an acute angle.

5. The microbubble generating device according to claim 2, characterized in that: The gas-liquid impact flow channel comprises: An impact section and a flat section connected to the impact section, wherein the impact section is connected to the fragmentation flow channel, and the flat section is connected to the expansion nozzle; the impact section is non-straightly designed, and the flat section is straightly designed.

6. The microbubble generating device according to claim 5, characterized in that: The impact section has a bent design, and / or the impact section has a curved design.

7. The microbubble generating device according to claim 6, characterized in that: The impact section includes one or more non-straight flow channels designed in parallel.

8. The microbubble generating device according to claim 7, characterized in that: The outlet of the non-straight flow channel is located on the inner wall of the flat section, so that the fluid medium flows along the inner wall in the flat section.

9. The microbubble generating device according to claim 8, characterized in that: The gas-liquid impact channel comprises a shell and a core body fixed in the shell, wherein the core body is formed with the impact section and the flat section connected to the impact section; the core body is also formed with a diffuser nozzle connected to the flat section; The expanding nozzle is conical, and the size of the expanding nozzle gradually increases along the ejection direction.

10. A cleaning device, characterized in that: The cleaning device comprises: A microbubble generating device, wherein the microbubble generating device is the microbubble generating device according to any one of claims 1 to 9; A distribution valve and a cleaning device, wherein the distribution valve is connected to the micro-bubble generating device, and the distribution valve is also connected to the cleaning device.

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