Bubble generator and cleaning equipment

Abstract

The utility model provides a bubble generator and cleaning equipment. The bubble generator includes: a main body portion; the air inlet hole is formed in one end of the main body part and used for injecting air into the main body part; the water outlet pipe is arranged at the other end of the main body part and communicated with the main body part, and the extending direction of the water outlet pipe is tangent to the inner side wall of the main body part; the water inlet pipe is arranged at the top or the bottom of the main body part, and when the water inlet pipe is arranged at the bottom of the main body part, the extending direction of the water inlet pipe is parallel to the extending direction of the air inlet hole; when the water inlet pipe is arranged at the top of the main body part, the extension direction of the water inlet pipe is perpendicular to the extension direction of the air inlet hole, so that the problem of high cost caused by complex structure of cleaning equipment in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a bubble generator and cleaning equipment. Background Art

[0002] In modern society, cleaning equipment has been widely used. There are many types of cleaning equipment on the market, such as floor scrubbers, floor sweepers, and all-in-one floor scrubbers and sweepers. In cleaning equipment, spraying detergents is usually used to clean the ground or the surface of objects. However, it is often difficult to effectively clean stubborn stains such as oil and stains by relying solely on the chemical action of detergents. Physical effects such as ultrasound and bubbles are required for cleaning. Therefore, cleaning equipment is often equipped with both a spraying device and a bubble-generating device to enhance the cleaning effect. However, the current cleaning equipment requires the use of ultrasonic equipment to generate bubbles, which is complex in structure and high in cost. Based on this, providing a cleaning device with a simple structure and low cost has become an urgent problem to be solved in this field. Utility Model Content

[0003] In view of this, the purpose of the present invention is to provide a bubble generator and a cleaning device.

[0004] In order to achieve the above-mentioned purpose, the technical solution provided by one embodiment of the present invention is as follows: a bubble generator, comprising: a main body; an air inlet hole, the air inlet hole is arranged at one end of the main body, and is used to inject air into the main body; a water outlet pipe, the water outlet pipe is arranged at the other end of the main body and is connected to the main body, and the extension direction of the water outlet pipe is tangent to the inner side wall of the main body; a water inlet pipe, the water inlet pipe is arranged at the top or bottom of the main body, when the water inlet pipe is arranged at the bottom of the main body, the extension direction of the water inlet pipe is parallel to the extension direction of the air inlet hole; when the water inlet pipe is arranged at the top of the main body, the extension direction of the water inlet pipe is perpendicular to the extension direction of the air inlet hole. Air is injected into the main body by opening an air inlet hole on the main body, and a water inlet pipe is set at the top or bottom of the main body to inject water into the main body. When the water inlet pipe is set at the top of the main body, water is injected into the main body by using the water inlet pipe perpendicular to the air inlet hole. At this time, water spirals down along the inner wall of the main body. During this process, the gas injected into the main body contacts the water vertically to generate microbubbles; when the water inlet pipe is set at the bottom of the main body, the water inlet direction of the water inlet pipe is set opposite to the air injection direction, so that water and gas can be offset to a certain extent to generate microbubbles.

[0005] Furthermore, when the water inlet pipe is positioned at the top of the main body, the direction in which the water inlet pipe extends is tangential to the inner wall of the main body; and / or the direction in which the water inlet pipe extends is parallel to the direction in which the water outlet pipe extends. When the water inlet pipe is positioned at the top surface of the main body, water flows along the inner wall, colliding with the gas entering the main body during this process, generating microbubbles. Furthermore, the parallel positioning of the water inlet pipe and the water outlet pipe ensures that water entering the main body through the water inlet pipe flows along at least half the length of the inner wall of the main body, extending the contact time between the water and the gas, thereby generating more microbubbles.

[0006] Furthermore, when the water inlet pipe is positioned at the bottom of the main body, at least a portion of the water inlet pipe extends into the cavity of the main body, and the length of the water inlet pipe extending into the cavity is greater than half the height of the cavity. Due to the longer length of the water inlet pipe extending into the cavity, water flowing out of the water inlet pipe can contact the air from the top air inlet hole at a higher flow rate, thereby generating a large number of microbubbles.

[0007] Furthermore, the water inlet pipe can be located at the center of the main body, or offset from the center. The water inlet pipe can be positioned at different locations on the main body as needed. Positioning the water inlet pipe at the center ensures uniform water flow around the body, while positioning it offset from the center of the main body allows for concentrated water flow in a specific area, allowing for the generation of microbubbles at that location.

[0008] Furthermore, the water outlet of the water inlet pipe is positioned directly opposite the air inlet hole; or the water outlet of the water inlet pipe and the air inlet hole are offset by a predetermined distance in the radial direction of the main body. When the water outlet of the water inlet pipe and the air inlet hole are positioned directly opposite each other, the water flow and the gas entering the main body collide with each other, thereby generating a large number of microbubbles. When the water outlet of the water inlet pipe and the air inlet hole are offset, this can prevent water from being ejected out of the air inlet hole when the water flow velocity is too high and the injection gas velocity decreases.

[0009] Furthermore, the diameter of the end of the water inlet pipe extending into the cavity gradually decreases toward the top surface of the main body. The diameter of the water inlet pipe gradually decreases toward the top surface of the main body to form a tapered structure at the water outlet, thereby increasing the speed of the water flow.

[0010] Furthermore, when the water inlet pipe is positioned at the top of the main body, the bubble generator further includes a baffle assembly disposed within the main body to divide at least a portion of the main body cavity into a plurality of sub-cavities, with the baffle assembly having a water-passing gap to interconnect the sub-cavities. The baffle assembly increases the velocity of water flow when water enters the main body through the water inlet pipe and flows along the inner wall of the main body. When water encounters the baffle assembly and flows through the water-passing gap, the velocity of the water flow is increased, and microbubbles are more likely to be generated when the high-speed water flow encounters high-speed gas.

[0011] Furthermore, the water gap extends along the height direction of the baffle assembly; and / or the water gap is located at the center of the baffle assembly to divide the baffle assembly into a plurality of sub-plate bodies. The plurality of sub-plate bodies are arranged at intervals to form the water gap, thereby accelerating the water flow.

[0012] Furthermore, the baffle assembly extends upward from the bottom surface of the cavity, and the height of the baffle assembly is less than the height of the cavity, so that a gap is provided between the top of the baffle assembly and the top surface of the cavity. This height of the baffle assembly being less than the height of the cavity ensures that the water flow accelerates after traveling a certain distance along the inner wall of the cavity top. If the baffle assembly were the entire height of the cavity, water entering the main body would directly pass through the water gap and be discharged from the outlet pipe before rotating along the main body. Clearly, in this case, the contact time between the gas injected through the air inlet and the accelerated water flow would be too short, resulting in a small amount of microbubbles.

[0013] Furthermore, the main body includes a first housing, the top surface of which is provided with an air inlet; and a second housing, the baffle assembly being disposed within the second housing. The second housing is detachably disposed below the first housing, and the water outlet pipe is disposed at an end of the second housing remote from the first housing. The detachable connection between the first and second housings facilitates production, installation, and subsequent maintenance and replacement of the first and second housings.

[0014] Furthermore, the bubble generator further comprises a venturi tube, which is connected to an end of the water outlet pipe away from the main body. The venturi tube further decomposes the microbubbles into smaller bubbles to enhance the use effect of the bubble generator.

[0015] Furthermore, the water inlet and outlet pipes are integrally formed with the main body or detachably connected. The detachable connection of the water inlet and outlet pipes to the main body facilitates subsequent maintenance, while the integrally formed arrangement can prevent water leakage. The specific selection can be made according to actual needs.

[0016] The utility model also provides a cleaning device, comprising: the above-mentioned bubble generator.

[0017] The utility model has the following beneficial effects:

[0018] Air is injected into the main body by opening an air inlet hole on the main body, and a water inlet pipe is set at the top or bottom of the main body to inject water into the main body. When the water inlet pipe is set at the top of the main body, water is injected into the main body by using the water inlet pipe perpendicular to the air inlet hole. At this time, water spirals down along the inner wall of the main body. During this process, the gas injected into the main body contacts the water vertically to generate microbubbles; when the water inlet pipe is set at the bottom of the main body, the water inlet direction of the water inlet pipe is set opposite to the air injection direction, so that water and gas can be offset to a certain extent to generate microbubbles. At the same time, this method has a simple structure and does not require additional ultrasonic equipment, which reduces the cost of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic structural diagram of a bubble generator provided at one angle according to a specific embodiment of the present invention;

[0021] Figure 2 A schematic structural diagram of a bubble generator provided by a specific embodiment of the present invention from another angle;

[0022] Figure 3 for Figure 2 Cross-sectional view of middle AA;

[0023] Figure 4 A schematic structural diagram of a second housing provided in another specific embodiment of the present invention;

[0024] Figure 5 A schematic structural diagram of a bubble generator provided at one angle in another specific embodiment of the present invention;

[0025] Figure 6 for Figure 5 Cross-sectional view of BB in;

[0026] Figure 7 The present invention is a schematic structural diagram of a cavitator provided in a specific embodiment of the present invention.

[0027] The above drawings include the following reference numerals:

[0028] 10. Main body; 11. First shell; 12. Second shell; 20. Air inlet; 30. Water outlet pipe; 40. Water inlet pipe; 50. Baffle assembly; 51. Water gap; 52. Sub-plate; 60. Cavitation device; 61. Adapter; 62. Plug; 63. Gasket; 64. Venturi tube; 70. Connection structure. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0032] In the description of the embodiments of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0034] In the description of the embodiments of the present invention, it should be noted that the terms "first", "second", etc. used in this document do not specifically refer to order or sequence, nor are they used to limit this case. They are only used to distinguish components or operations described with the same technical terms.

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0036] The technical solution of the present utility model will be described below with reference to the accompanying drawings.

[0037] In order to solve the problem of high cost caused by complex structure of cleaning equipment in the prior art, the utility model provides a bubble generator and a cleaning equipment.

[0038] In order to achieve the above-mentioned purpose, the technical solution provided by one embodiment of the present invention is as follows:

[0039] like Figures 1 to 4 As shown, the bubble generator includes a main body 10, an air inlet 20, a water outlet pipe 30, and a water inlet pipe 40. The air inlet 20 is provided at one end of the main body 10 for injecting air into the main body 10. The water outlet pipe 30 is provided at the other end of the main body 10 and is in communication with the main body 10. The extension direction of the water outlet pipe 30 is tangent to the inner side wall of the main body 10. The water inlet pipe 40 is provided at the top or bottom of the main body 10. When the water inlet pipe 40 is provided at the bottom of the main body 10, the extension direction of the water inlet pipe 40 is parallel to the extension direction of the air inlet 20; when the water inlet pipe 40 is provided at the top of the main body 10, the extension direction of the water inlet pipe 40 is perpendicular to the extension direction of the air inlet 20.

[0040] An air inlet hole 20 is opened on the main body 10 to inject air into the main body 10, and a water inlet pipe 40 is set at the top or bottom of the main body 10 to inject water into the main body 10. When the water inlet pipe 40 is set at the top of the main body 10, water is injected into the main body 10 by using the water inlet pipe 40 perpendicular to the air inlet hole 20. At this time, water spirals down along the inner wall of the main body 10. During this process, the gas injected into the main body 10 contacts the water vertically to generate microbubbles; when the water inlet pipe 40 is set at the bottom of the main body 10, the water inlet direction of the water inlet pipe 40 is set relative to the air injection direction, so that water and gas can be offset to a certain extent to generate microbubbles. At the same time, this method has a simple structure and does not require additional ultrasonic equipment, which reduces the cost of the product.

[0041] In one specific embodiment of the present application, when the water inlet pipe 40 is located at the top of the main body 10, the extension direction of the water inlet pipe 40 is tangential to the inner wall of the main body 10; and / or the extension direction of the water inlet pipe 40 is parallel to the extension direction of the water outlet pipe 30. When the water inlet pipe 40 is located on the top surface of the main body 10, water flows along the inner wall and collides with gas entering the main body 10 during this process, generating microbubbles. The water inlet pipe 40 and the water outlet pipe 30 are arranged parallel to each other, so that water entering the main body 10 through the water inlet pipe 40 flows through at least half the length of the inner wall of the main body 10, extending the contact time between the water and gas, thereby generating more microbubbles.

[0042] Specifically, this layout further optimizes the water flow path, ensuring a more uniform mixing of water and air, resulting in finer bubbles and enhanced cleaning and water treatment effectiveness. This approach, in particular, enhances the generation of more bubbles when detergent is added to the water entering the main body 10 through the water inlet pipe 40, improving the washing effect. Furthermore, this design creates a strong vortex between the gas and water within the main body, increasing the gas-liquid contact area and thus improving bubble generation efficiency.

[0043] Furthermore, the air inlet 20 and the axis of the water inlet pipe 40 are perpendicular to each other, so that the gas and liquid entering the main body 10 collide vertically and repeatedly collide between the inner walls of the main body 10, forming small bubbles under the action of shear force, and due to the increase in the gas-liquid contact area, the solubility of air in water is improved.

[0044] In this embodiment, the water inlet pipe 40 and the water outlet pipe 30 are respectively arranged at the upper and lower ends of the main body 10, that is, there is a height difference between the water entering the main body 10 and the water leaving the main body 10. The difference in flow rate and height difference of the inlet and outlet water flows will form a water seal at the water outlet pipe 30, so that the pressure in the main body 10 is gradually increased to form a high-pressure chamber, thereby further increasing the solubility of gas.

[0045] In another specific embodiment of the present application, when the water inlet pipe 40 is disposed at the bottom of the main body 10, at least a portion of the water inlet pipe 40 extends into the cavity of the main body 10, and the length of the water inlet pipe 40 extending into the cavity is greater than half the height of the cavity. Due to the longer length of the water inlet pipe 40 extending into the cavity, the water flowing out of the water inlet pipe 40 can contact the gas from the top air inlet hole 20 at a higher flow rate, thereby generating a large number of microbubbles.

[0046] Specifically, such as Figure 4 As shown, this arrangement allows water to enter the main body 10 from bottom to top, and gas to enter the main body 10 from top to bottom along the air inlet 20. This arrangement ensures that the water flow and the gas are in full contact, thereby generating a large number of bubbles.

[0047] In this embodiment, the water inlet pipe 40 is located at the center of the main body 10, or alternatively, the water inlet pipe 40 is positioned offset from the center of the main body 10. The water inlet pipe 40 can be positioned at different locations on the main body 10 as needed. Positioning the water inlet pipe 40 at the center ensures uniform water flow around the body, while positioning it offset from the center of the main body 10 allows the water flow to be concentrated in a specific area, thereby generating microbubbles at that location.

[0048] Specifically, it should be noted that the water inlet pipe 40 being located at the center point means that the water inlet pipe 40 is installed at the center of the main body 10, and the axis of the water inlet pipe 40 coincides with the axis of the main body 10. Figure 6 The water inlet pipe 40 can be arranged at the center point to produce a symmetrical bubble distribution, while the water inlet pipe 40 can be arranged away from the center point to produce an asymmetrical vortex, both of which can optimize the bubble generation effect according to specific needs.

[0049] In this embodiment, the outlet of the water inlet pipe 40 is positioned directly opposite the air inlet hole 20; alternatively, the outlet of the water inlet pipe 40 and the air inlet hole 20 are offset by a predetermined distance in the radial direction of the main body 10. When the outlet of the water inlet pipe 40 and the air inlet hole 20 are positioned directly opposite each other, the water flow and the air entering the main body 10 collide with each other, thereby generating a large number of microbubbles. When the outlet of the water inlet pipe 40 and the air inlet hole 20 are offset, this prevents excessive water flow velocity from causing the injection gas velocity to decrease, thereby preventing water from being ejected out of the air inlet hole 20.

[0050] Specifically, setting the water outlet of the water inlet pipe 40 directly opposite the air inlet hole 20 can enhance gas-liquid mixing, while staggering it can produce more complex bubble shapes. Both can improve the quality and quantity of bubble generation, and can be selected according to actual needs.

[0051] In this embodiment, the diameter of the end of the water inlet pipe 40 extending into the cavity gradually decreases toward the top surface of the main body 10. The diameter of the water inlet pipe 40 gradually decreases toward the top surface of the main body 10 to form a tapered structure at the water outlet, thereby increasing the speed of the water flow.

[0052] Specifically, a narrow opening is formed at the end of the water outlet of the water inlet pipe 40, so that the cross-sectional area of ​​the fluid at the end of the water inlet pipe 40 is reduced, thereby increasing the flow rate, so as to better contact with the gas to generate small bubbles, so as to process smaller stains and particles and achieve better cleaning effect.

[0053] In another specific embodiment of the present application, when the water inlet pipe 40 is disposed at the top of the main body 10, the bubble generator further includes a baffle assembly 50. The baffle assembly 50 is disposed within the main body 10 to divide at least a portion of the cavity of the main body 10 into a plurality of sub-cavities, and the baffle assembly 50 has a water-passing gap 51 to interconnect the sub-cavities. By providing the baffle assembly 50, when water enters the main body 10 through the water inlet pipe 40 and moves along the inner wall of the main body 10, it encounters the baffle assembly 50 and flows through the water gap 51, thereby increasing the velocity of the water flow. When the high-speed water flow encounters the high-speed gas, microbubbles are more easily generated.

[0054] Specifically, such as Figure 4 As shown, this design can increase the complexity of the water flow path, further improving the efficiency and quality of bubble generation. Optionally, the baffle assembly 50 can be integrally formed with the main body 10 or removably connected. A removable connection facilitates repair and replacement, requiring only the baffle assembly 50 to be replaced without replacing the entire main body 10. An integrally formed design is also easier to process and can be directly injection molded.

[0055] like Figure 4 As shown, the water gap 51 extends along the height direction of the baffle assembly 50; and / or the water gap is located at the center of the baffle assembly 50 to divide the baffle assembly 50 into a plurality of sub-plate bodies 52. The plurality of sub-plate bodies 52 are arranged at intervals to form the water gap 51, thereby accelerating the water flow.

[0056] Specifically, the length of the water-passing gap 51 matches the height of the baffle assembly 50, and its location at the center of the baffle assembly 50 optimizes the bubble generation path. That is, in this embodiment, the two sub-plates 52 are of equal size and spaced apart. Of course, the water-passing gap 51 can also be located at an eccentric position of the baffle assembly 50, meaning the two sub-plates 52 can be of different sizes.

[0057] In this embodiment, the baffle assembly 50 extends upward from the bottom surface of the cavity, and the height of the baffle assembly 50 is less than the height of the cavity, so that the top of the baffle assembly 50 is spaced apart from the top surface of the cavity. This height of the baffle assembly 50 being less than the height of the cavity ensures that the water flow accelerates after traveling a certain distance along the inner wall of the cavity top. If the baffle assembly 50 were the entire height of the cavity, water entering the main body 10 would not directly pass through the water gap 51 along the rotating edge of the main body 10 and be discharged from the water outlet pipe 30. Clearly, in this case, the contact time between the gas injected from the air inlet 20 and the accelerated water flow would be too short, resulting in a relatively small amount of microbubbles.

[0058] Specifically, the baffle assembly 50 is smaller than the height of the cavity, which can prevent bubbles from gathering at the top of the main body 10. At the same time, the gas-liquid mixture can form a vortex at the top of the main body 10 to increase the amount of microbubbles generated.

[0059] like Figures 1 to 6 As shown, the main body 10 includes a first shell 11 and a second shell 12. An air inlet 20 is defined on the top surface of the first shell 11. A baffle assembly 50 is disposed within the second shell 12. The second shell 12 is detachably disposed below the first shell 11. The water outlet pipe 30 is disposed at one end of the second shell 12 away from the first shell 11. The detachable connection between the first and second shells 11, 12 facilitates production, installation, and subsequent maintenance and replacement.

[0060] Specifically, the first shell 11 and the second shell 12 can be processed separately. After the water inlet pipe 40 is installed on the first shell 11 and the baffle assembly 50 is installed in the second shell 12, the first shell 11 and the second shell 12 are assembled, which facilitates processing and production. Optionally, a seal can be provided between the first shell 11 and the second shell 12 to reduce the possibility of water leakage.

[0061] like Figure 7 As shown, the bubble generator further includes a venturi tube 64, which is connected to one end of the water outlet pipe 30 away from the main body 10. The venturi tube 64 further decomposes the microbubbles into smaller bubbles to enhance the use effect of the bubble generator.

[0062] Specifically, the venturi tube 64 is a part of the cavitator 60. The cavitator 60 can be detachably connected to the water outlet pipe 30 or integrally formed. The cavitator 60 includes an adapter 61, a plug 62, a gasket 63 and a venturi tube 64. The plug 62 is connected to the venturi tube 64, with adapters 61 at both ends, and a connecting end is provided on the corresponding water outlet pipe 30. When the water flows through the cavitator 60, the cross-section of the flow channel first shrinks and then expands. The flow channel shrinks, the water flow rate increases, and the pressure decreases. The flow channel expands, the flow rate decreases, and the pressure increases, resulting in a Venturi effect. The air solubility of the water body decreases, and the air precipitates from the solute state to form microbubbles. At the same time, the small microbubbles generated by the main body 10 will break and split into smaller microbubbles when passing through the venturi tube 64, thereby improving the cleaning effect.

[0063] In this embodiment, the outlet pipe 30 is a flexible hose with a certain hardness. The end of the outlet pipe 30 away from the main body 10 is sleeved on the adapter 61. An adjustable collar is provided on the outside of the hose for connecting and fixing the hose and the cavitator 60. Optionally, the outlet pipe 30 is a rubber hose.

[0064] In this embodiment, the water inlet pipe 40 and the water outlet pipe 30 are integrally formed with the main body 10 or detachably connected. The detachable connection of the water inlet pipe 40 and the water outlet pipe 30 to the main body 10 facilitates subsequent maintenance, while the integrally formed arrangement prevents water leakage. The specific selection can be made according to actual needs.

[0065] The utility model also provides a cleaning device, comprising: the above-mentioned bubble generator.

[0066] Specifically, the cleaning device also includes a device body, a connecting structure 70 is provided on the top of the main body 10, and the bubble generator is provided in the device body, and a screw passes through the device body and is connected to the connecting structure 70. The cleaning device can be a pulsator washing machine, a drum washing machine, a dryer, and other devices.

[0067] The utility model has the following beneficial effects:

[0068] An air inlet hole 20 is opened on the main body 10 to inject air into the main body 10, and a water inlet pipe 40 is set at the top or bottom of the main body 10 to inject water into the main body 10. When the water inlet pipe 40 is set at the top of the main body 10, water is injected into the main body 10 by using the water inlet pipe 40 perpendicular to the air inlet hole 20. At this time, water spirals down along the inner wall of the main body 10. During this process, the gas injected into the main body 10 contacts the water vertically to generate microbubbles; when the water inlet pipe 40 is set at the bottom of the main body 10, the water inlet direction of the water inlet pipe 40 is set relative to the air injection direction, so that water and gas can be offset to a certain extent to generate microbubbles. At the same time, this method has a simple structure and does not require additional ultrasonic equipment, which reduces the cost of the product.

[0069] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0070] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bubble generator, characterized in that: include: Main body; an air inlet, the air inlet being provided at one end of the main body and being used for injecting air into the main body; a water outlet pipe, the water outlet pipe being arranged at the other end of the main body and communicating with the main body, the extension direction of the water outlet pipe being tangent to the inner side wall of the main body; A water inlet pipe, which is arranged at the top or bottom of the main body. When the water inlet pipe is arranged at the bottom of the main body, the extending direction of the water inlet pipe is parallel to the extending direction of the air inlet hole; When the water inlet pipe is arranged on the top of the main body, the extending direction of the water inlet pipe is perpendicular to the extending direction of the air inlet hole.

2. The bubble generator according to claim 1, characterized in that When the water inlet pipe is arranged on the top of the main body, The extension direction of the water inlet pipe is tangent to the inner side wall of the main body; and / or The extending direction of the water inlet pipe is parallel to the extending direction of the water outlet pipe.

3. The bubble generator according to claim 1, characterized in that When the water inlet pipe is arranged at the bottom of the main body, at least a portion of the water inlet pipe extends into the cavity of the main body, and the length of the water inlet pipe extending into the cavity is greater than half of the height of the cavity.

4. The bubble generator according to claim 3, characterized in that The water inlet pipe is located at the center point of the main body; or The water inlet pipe is arranged away from the center point of the main body.

5. The bubble generator according to claim 3, characterized in that: The water outlet of the water inlet pipe is arranged opposite to the air inlet; or The water outlet of the water inlet pipe and the air inlet hole are staggered by a preset distance in the radial direction of the main body.

6. The bubble generator according to claim 3, characterized in that The diameter of one end of the water inlet pipe extending into the cavity gradually decreases in a direction toward the top surface of the main body.

7. The bubble generator according to claim 1, characterized in that When the water inlet pipe is arranged at the top of the main body, the bubble generator also includes a baffle assembly, which is arranged in the main body to separate at least a portion of the cavity of the main body into multiple sub-cavities, and the baffle assembly has a water-passing gap to enable the sub-cavities to communicate with each other.

8. The bubble generator according to claim 7, characterized in that The water gap extends along the height direction of the baffle assembly; and / or The water-passing gap is located at the center of the baffle assembly to divide the baffle assembly into a plurality of sub-plate bodies.

9. The bubble generator according to claim 7, characterized in that: The baffle assembly has a bottom surface of the cavity extending upward, and a height of the baffle assembly is smaller than a height of the cavity, so that a top end of the baffle assembly is spaced from a top surface of the cavity.

10. The bubble generator according to claim 7, characterized in that The main body comprises: a first shell, wherein the air inlet hole is formed on the top surface of the first shell; The baffle assembly is arranged in the second shell, the second shell is detachably arranged below the first shell, and the water outlet pipe is arranged at an end of the second shell away from the first shell.

11. The bubble generator according to any one of claims 1 to 10, characterized in that The bubble generator further comprises a venturi tube, and the venturi tube is connected to an end of the water outlet pipe away from the main body.

12. The bubble generator according to any one of claims 1 to 10, characterized in that The water inlet pipe and the water outlet pipe are integrally formed with the main body or are detachably connected.

13. A cleaning device, characterized in that: include: The bubble generator according to any one of claims 1 to 12.

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