Bubble generator and washing equipment having the same

Abstract

The present invention relates to a bubble generator and a washing device having the same. The bubble generator comprises a box body, which comprises a water inlet, a water outlet, and a throttle hole located between the first two, the water inlet is provided with a water inlet end, and the water outlet is provided with a plug-in chamber; a plug-in configured to be accommodated in the plug-in chamber, a negative pressure chamber and a mixing chamber located downstream of the negative pressure chamber are provided in the plug-in, a first end of the plug-in is positioned close to the throttle hole and an annular platform is formed on the first end, which surrounds the negative pressure chamber and extends outwardly along the center line to a predetermined height, at least one notch is formed on the annular platform, the annular platform abuts against the radial wall of the plug-in chamber to form an air inlet channel between the first end and the plug-in chamber, the air inlet channel is connected to the negative pressure chamber through the notch, the negative pressure generated by the water flow flowing through the throttle hole in the negative pressure chamber can suck the outside air into the negative pressure chamber, and the air and the water flow are mixed in the mixing chamber to form bubble water; a micro-bubble bubbling net, which is configured to cut the bubble water into micro-bubble water.

Description

Technical Field

[0001] The invention relates to the field of washing, in particular to a bubble generator and a washing device having the bubble generator. Background Art

[0002] Microbubbles usually refer to tiny bubbles with a diameter of less than 50 microns (μm) when bubbles occur. Microbubbles can also be called micro / nano-bubbles, micron bubbles or nano-bubbles according to their diameter range. Microbubbles have low buoyancy in liquids, so they stay in liquids for a long time. In addition, microbubbles shrink in liquids until they finally break, generating smaller nanobubbles. In this process, the bubbles become smaller, so their rising speed becomes slow, resulting in high melting efficiency. When microbubbles break, high pressure and high temperature heat are generated locally, which can destroy foreign matter such as organic matter floating in the liquid or attached to objects. In addition, the contraction process of microbubbles is also accompanied by an increase in negative charge. The peak state of negative charge is usually when the diameter of the microbubble is 1-30 microns, so it is easy to adsorb positively charged foreign matter floating in the liquid. The result is that the foreign matter will be adsorbed by the microbubbles after it is destroyed by the breaking of the microbubbles, and then slowly float to the surface of the liquid. These characteristics make microbubbles have strong cleaning and purification capabilities. At present, microbubbles have been widely used in washing machines and other washing equipment.

[0003] For example, Chinese invention patent CN108396516B discloses a pulsator washing machine having a water injection device arranged in a tray. The water injection device has a connection port connected to a water supply source, a water injection box, and a micro-bubble generator arranged between the connection port and the water injection box. Specifically, the micro-bubble generator disclosed in CN108396516B has a cylindrical nozzle, and a conical channel portion with a reduced diameter, a protrusion (forming a throttle hole) and a mixing chamber (the diameter is larger than the diameter of the throttle hole and remains unchanged) are formed in the nozzle along the water flow direction. After the electromagnetic water supply valve is opened, the water flow from the main water pipe is rapidly depressurized when flowing through this micro-bubble generator, so that the air in the water flow is precipitated and micro-bubbles are generated in the water, thereby forming micro-bubble water. The micro-bubble water enters the washing drum and is used for washing clothes. However, this micro-bubble generator can only rely on the extremely limited air carried by the liquid flowing through it to generate micro-bubbles, so the micro-bubble generator cannot provide micro-bubble water containing enough micro-bubbles.

[0004] For another example, Chinese invention patent CN111417455A discloses a micro-bubble generator, which includes a flow path component and a decompression component. The flow path component constitutes a flow path through which liquid can pass, and the decompression component has a collision part, which is embedded in the flow path component. By locally reducing the cross-sectional area of ​​the flow path, micro-bubbles are generated in the liquid passing through the flow path. The micro-bubble generator also has: an outlet connected to the negative pressure generating part of the decompression component; an external air inlet provided in the flow path component for introducing external air; and an external air inlet path connecting the external air inlet and the outlet. External air can be sucked in through the negative pressure of the negative pressure generating part. However, the air intake amount of the micro-bubble generator is limited, and the micro-bubble generation effect is not good, so that the cleaning effect still has a lot of room for improvement, and the residual detergent may pose a hidden danger to the health of users.

[0005] Accordingly, the art needs a new technical solution to solve the above problems. Summary of the invention

[0006] In order to solve the above-mentioned problems in the prior art, that is, to solve the technical problem that the micro-bubble generation efficiency of the existing water injection device is not high, the present invention provides a bubble generator, the bubble generator comprising: a box body, which comprises a water inlet, a water outlet, and a throttling hole located between the water inlet and the water outlet, the water inlet is provided with a water inlet end, the water outlet is provided with a plug-in chamber; a plug-in, which is configured to be accommodated in the plug-in chamber, a negative pressure chamber and a mixing chamber located downstream of the negative pressure chamber are provided in the plug-in, a first end of the plug-in is positioned close to the throttling hole and a flow passage is formed on the first end around the negative pressure chamber and extending in the direction of the center line an annular platform extending outward to a predetermined height, with at least one notch formed on the annular platform, the annular platform abutting against the radial wall of the plug-in chamber to form an air inlet channel between the first end and the plug-in chamber for connecting air to the outside of the water outlet, the air inlet channel being connected to the negative pressure chamber through the at least one notch, so that the negative pressure generated in the negative pressure chamber by the water flow throttled by the throttle hole can suck the outside air into the negative pressure chamber, and the air and water flow are mixed in the mixing chamber to form bubble water; and a micro-bubble bubbling net, which can be fixed on the second end of the plug-in and is configured to cut the bubble water into micro-bubble water.

[0007] In a preferred technical solution of the above-mentioned bubble generator, the at least one notch includes two notches spaced apart from each other.

[0008] In the preferred technical solution of the above-mentioned bubble generator, an annular groove surrounding the annular platform is also formed on the first end of the plug-in, and the annular groove extends from the end surface of the first end along the center line direction within the first end to a first predetermined depth, and the annular groove is connected to the air inlet channel.

[0009] In a preferred technical solution of the above-mentioned bubble generator, a radial wall groove having a second predetermined depth is formed on the radial wall of the plug-in chamber, the radial wall groove is opposite to the annular groove and is communicated with the air inlet channel.

[0010] In the preferred technical solution of the above-mentioned bubble generator, the bubble generator also includes a pressure plate, which includes a plate-like body and a pressure leg extending outward from the inner side of the plate-like body, and the pressure plate presses the microbubble bubbling net against the second end of the plug-in through the pressure leg, so that a microbubble water chamber for receiving the microbubble water is formed between the microbubble bubbling net and the plate-like body, and a microbubble water outlet is provided on the plate-like body.

[0011] In the preferred technical solution of the above-mentioned bubble generator, the pressure leg includes a plurality of pressure legs, and the plurality of pressure legs are arranged in a ring shape matching the second end of the plug-in and forming a circumferential gap between adjacent pressure legs, and the microbubble water can also flow out from the microbubble water chamber through the circumferential gap.

[0012] In the preferred technical solution of the above-mentioned bubble generator, the water outlet portion includes a circumferential outer wall and a circumferential inner wall surrounding the plug-in chamber, the circumferential outer wall is composed of an upper wall, a lower wall, a left wall and a right wall, the circumferential inner wall extends parallel to at least a portion of the upper wall, the left wall and the right wall, and an air inlet groove connected to the outside air is formed between the circumferential outer wall and the circumferential inner wall, and the air inlet groove forms an air connection with the air inlet channel via an air inlet port formed on the circumferential inner wall.

[0013] In a preferred technical solution of the above-mentioned bubble generator, a portion of the lower wall close to the second end of the plug-in unit is radially expanded outward to form an auxiliary water outlet located downstream of the plug-in unit chamber.

[0014] In the preferred technical solution of the bubble generator, along the flow direction of the water flow, the inner wall diameter of the negative pressure chamber gradually decreases, and the inner wall diameter of the mixing chamber gradually increases.

[0015] In a preferred technical solution of the above-mentioned bubble generator, a plurality of reinforcing ribs spaced apart from each other in the circumferential direction are provided on the outer circumference of the conical wall surrounding the mixing chamber.

[0016] In a preferred technical solution of the above-mentioned bubble generator, a plurality of overflow ports are provided on the second end of the plug-in.

[0017] In a preferred technical solution of the above-mentioned bubble generator, a plurality of pipeline reinforcing ribs spaced apart from each other in the circumferential direction are provided on the inner wall of the water inlet portion.

[0018] In the preferred technical solution of the above-mentioned bubble generator, the micro-bubble bubbling net comprises a multi-layer net structure, and each layer of the net structure has at least one mesh hole with a diameter reaching the micron level.

[0019] It can be understood by those skilled in the art that in the technical solution of the bubble generator of the present invention, the bubble generator includes a box body, a plug-in and a micro-bubble bubbling net. The box body includes a water inlet, a water outlet, and a throttle hole for fluid communication between the water inlet and the water outlet. A plug-in chamber is formed on the box body. A negative pressure chamber and a mixing chamber located downstream of the negative pressure chamber are provided in the plug-in that can be accommodated in the plug-in chamber. The first end of the plug-in is positioned close to the throttle hole and an annular platform is formed on the first end to surround the negative pressure chamber and extend outwardly to a predetermined height along the center line direction. At least one notch is formed on the annular platform. The annular platform abuts against the radial wall of the plug-in chamber to form an air inlet channel between the first end and the plug-in chamber to connect the air to the outside of the water outlet. The air inlet channel is connected to the negative pressure chamber through the notch, so that the negative pressure generated by the water flow after throttling by the throttle hole in the negative pressure chamber can suck the outside air into the negative pressure chamber, and the air and water flow are fully mixed in the mixing chamber to form bubble water. With the help of negative pressure, a large amount of external air can be sucked into the negative pressure chamber through the notch and the air inlet channel. The inhaled air is fully mixed with the water flow through the mixing chamber to provide bubble water containing a large number of bubbles. The bubble water is cut and mixed by the microbubble generating net to form microbubble water containing rich microbubbles. Therefore, the bubble generator of the present invention significantly increases the microbubble content in the microbubble water.

[0020] Preferably, two gaps spaced apart from each other are arranged on the annular platform so that air can be sucked in from different directions, thereby increasing the air intake amount.

[0021] Preferably, an annular groove extending from the end surface of the first end along the center line direction to a first predetermined depth in the first end is provided on the first end of the plug-in, and the annular groove is connected to the air inlet channel. The annular groove can facilitate production demoulding and store a certain amount of air, thereby providing more air for the negative pressure chamber.

[0022] Preferably, a radial wall groove with a second predetermined depth is formed on the radial wall of the plug-in chamber, the radial wall groove is opposite to the annular groove and communicates with the air inlet channel. The radial wall groove makes the box body have a uniform wall thickness, ensuring the molding of the box body. At the same time, the volume of the air inlet channel is also expanded, further increasing the air storage capacity, ensuring that the negative pressure chamber can inhale enough air.

[0023] Preferably, the bubble generator further comprises a pressing plate composed of a plate-like body and a pressing leg, wherein the pressing plate presses the microbubble bubbling net against the second end of the plug-in through the pressing leg, and forms a microbubble water chamber for receiving microbubble water between the microbubble bubbling net and the plate-like body. The microbubble water can be guided to the microbubble water outlet through the microbubble water chamber. Moreover, the plate-like body can serve as an end cover of the water outlet of the box body.

[0024] Preferably, the plurality of press legs are arranged in a ring shape matching the second end of the plug-in, and a circumferential gap through which microbubble water can flow out is formed between adjacent press legs, and the circumferential gap can increase the degree of freedom of the microbubble water to flow out.

[0025] Preferably, the water outlet portion includes a circumferential outer wall and a circumferential inner wall surrounding the plug-in chamber, the circumferential outer wall is composed of an upper wall, a lower wall, a left wall and a right wall, the circumferential inner wall extends in parallel along at least a portion of the upper wall, the left wall and the right wall, the air suction groove is formed between the circumferential outer wall and the circumferential inner wall and is connected to the air inlet channel via an air inlet formed on the circumferential inner wall. The air suction groove is arranged between the circumferential outer wall and the circumferential inner wall which are spaced apart and arranged in parallel, and an air inlet which can be connected to the negative pressure chamber is provided on the circumferential inner wall, which not only provides a sufficiently large air suction groove, but also avoids the air suction groove and the air inlet from being blocked, thereby ensuring that sufficient air can flow smoothly into the negative pressure chamber.

[0026] Preferably, the lower wall of the water outlet portion near the second end of the insert is radially expanded outward to form an auxiliary water outlet, from which water from the overflow port and / or microbubble water flowing out from the circumferential gap between the press legs can be discharged.

[0027] Preferably, along the flow direction of the water flow, the inner diameter of the negative pressure chamber gradually decreases to form a tapered chamber with a gradually decreasing diameter, and the inner diameter of the mixing chamber gradually increases to form a tapered chamber with a gradually increasing diameter. The configuration of the negative pressure chamber is used to enhance the intake of air, while the configuration of the mixing chamber is used to enhance the mixing degree of air and water.

[0028] Preferably, a plurality of reinforcing ribs spaced apart from each other in the circumferential direction are provided on the outer circumference of the conical wall surrounding the mixing chamber, which can increase the strength of the mixing chamber portion of the plug-in and facilitate the process molding of the plug-in.

[0029] Preferably, a plurality of overflow ports are provided on the second end of the plug-in. When the water pressure in the nozzle is insufficient and the water flow cannot quickly penetrate the micro-bubble bubbling net, the water flow can flow out from these overflow ports, thereby avoiding the problem of the micro-bubble bubbling net being blocked and the inability to inhale due to the accumulation of water flow in the mixing chamber, thereby ensuring the high reliability of the bubble generator in continuously generating micro-bubble water.

[0030] Preferably, a plurality of pipeline reinforcing ribs are provided on the inner wall of the water inlet portion, which can enhance the strength of the water inlet portion and also play a role in positioning the water inlet pipe disposed inside.

[0031] Preferably, the microbubble bubbling net is a multi-layer net structure, which can significantly reduce the diameter of the microbubbles and increase the mixing degree of the microbubbles and water by cooperating with the micron pores on each layer of the net structure.

[0032] In order to solve the above-mentioned problems in the prior art, that is, to solve the technical problems that the existing washing equipment has poor cleaning effect and the residual detergent may cause hidden dangers to the health of users, the present invention also provides a washing equipment, which includes: a box, a washing drum arranged in the box, a water inlet pipe installed on the box and connected to an external water source, and any bubble generator as described above, which is connected to the water inlet pipe through a connecting mechanism and provides micro-bubble water to the washing drum. By spraying micro-bubble water into the washing drum, it can help improve the cleaning ability of the washing equipment, and at the same time save the amount of detergent, which is also beneficial to the health of users.

[0033] In the preferred technical solution of the above-mentioned washing device, the connecting mechanism includes: a connecting sleeve that can be connected to the water inlet end, a holder that can be sleeved on the water inlet pipe and is provided with a connecting groove and a plurality of claws, and a fixing member that can be connected to the housing and can be clamped in the connecting groove. The connecting groove surrounds the outer peripheral wall of the holder, the claws are formed on one end of the holder and are evenly spaced along the circumference of the holder, and the holder is connected to the connecting sleeve through the claws. The connecting mechanism connects the water inlet pipe to the bubble generator while connecting the bubble generator to the housing, so that the connection structure can be used to form a connection between the water inlet pipe, the bubble generator and the housing. This makes the installation of the water inlet pipe, the bubble generator and the housing in the washing device more secure and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0035] Figure 1 is a three-dimensional schematic diagram of an embodiment of a bubble generator of the present invention;

[0036] Figure 2 yes Figure 1 A front view of an embodiment of a bubble generator of the present invention is shown;

[0037] Figure 3 It is along Figure 2 A cross-sectional view of an embodiment of the bubble generator of the present invention taken along section line AA;

[0038] Figure 4 is a first stereoscopic schematic diagram of an embodiment of a box body of a bubble generator of the present invention;

[0039] Figure 5 is a rear view of an embodiment of a box body of a bubble generator of the present invention;

[0040] Figure 6 It is along Figure 5 A cross-sectional view of an embodiment of a box body of a bubble generator of the present invention taken along section line BB;

[0041] Figure 7 is a second stereoscopic schematic diagram of an embodiment of a box body of a bubble generator of the present invention;

[0042] Figure 8 is a front view of an embodiment of a box body of a bubble generator of the present invention;

[0043] Fig. 9 It is along Figure 8 A cross-sectional view of an embodiment of a box body of a bubble generator of the present invention taken along a section line CC;

[0044] Fig.10 is a first stereoscopic schematic diagram of an embodiment of a plug-in unit of a bubble generator of the present invention;

[0045] Fig.11 is a second perspective schematic diagram of an embodiment of a plug-in unit of a bubble generator of the present invention;

[0046] Fig.12 is a first stereoscopic schematic diagram of an embodiment of a pressure plate of a bubble generator of the present invention;

[0047] Fig.13 is a second stereoscopic schematic diagram of an embodiment of a pressure plate of a bubble generator of the present invention;

[0048] Fig.14 It is a structural schematic diagram of an embodiment of a washing device of the present invention;

[0049] Fig.15 is a first stereoscopic schematic diagram of an embodiment of a connection mechanism of a washing device of the present invention;

[0050] Fig.16 is a second stereoscopic schematic diagram of an embodiment of the connection mechanism of the washing device of the present invention;

[0051] List of reference numerals:

[0052] 1. Pulsator washing machine; 11. Box body; 12. Plate base; 13. Upper cover; 14. Foot; 10. Washing drum; 21. Outer barrel; 31. Inner barrel; 311. Dehydration hole; 32. Pulsator; 33. Transmission shaft; 34. Motor; 35. Balance ring; 41. Drain valve; 42. Drain pipe; 5. Bubble generator; 51. Box body; 511. Water inlet; 111. Water inlet end; 111a. Connecting sleeve groove; 112. Pressurized channel; 113. Straight channel; 114. Pipe reinforcement rib; 115. Water inlet pipe limit strip; 512. Radial wall; 512a. Conical boss; 513. throttle hole; 514, water outlet; 140, lower limit wall; 141, circumferential outer wall; 141a, upper wall; 141b, lower wall; 141c, left wall; 141d, right wall; 142, circumferential inner wall; 142a, inner upper wall; 142b, inner left wall; 142c, inner right wall; 142d, inner left lower wall; 142e, inner right lower wall; 143, air suction groove; 144, reinforcing rib; 145, air inlet; 146, plug-in chamber; 147, auxiliary water outlet; 148, fixing column; 149, buckle; 515, micro bubble water chamber; 516, air inlet channel; 517, Radial wall groove; 52, pressing plate; 521, plate-shaped body; 521a, inner side; 521d, outer side; 521b, upper edge; 521c, lower edge; 522, pressing leg; 522a, first pressing leg; 522b, second pressing leg; 523, circumferential gap; 524, fixing hole; 525, plug-in guide edge; 526, micro-bubble water outlet; 527, pressing plate guide edge; 53, plug-in; 530, annular groove; 531, negative pressure chamber; 532, mixing chamber; 532a, mixing chamber inner wall; 532b, mixing chamber conical wall; 321, reinforcing rib; 533, Sealing groove; 534, plug-in sealing ring; 535, overflow port; 536, transition hole; 537, straight cylinder mixing chamber; 371, protrusion; 538, mesh groove; 539a, first end; 391, annular platform; 392, notch; 539b, second end; 54, micro bubble bubbling net; 61, water inlet valve; 62, water inlet pipe; 17, connecting mechanism; 71, connecting sleeve; 711, connecting protrusion; 712, claw groove; 72, clamping seat; 721, claw; 722, annular disk; 73, fixing piece; 731, arc-shaped protrusion; 732, arc-shaped groove; 18, water inlet pipe sealing ring. DETAILED DESCRIPTION

[0053] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0054] It should be noted that, in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0055] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In order to solve the technical problem that the microbubble generation rate of the existing water injection box is not high, the present invention provides a bubble generator 5. The bubble generator 5 includes: a box body 51, which includes a water inlet 511, a water outlet 514, and a throttle hole 513 located between the water inlet 511 and the water outlet 514, the water inlet 511 is provided with a water inlet end 111, and the water outlet 514 is provided with a plug-in chamber 146; a plug-in 53, which is configured to be accommodated in the plug-in chamber 146, and a negative pressure chamber 531 and a mixing chamber 532 located downstream of the negative pressure chamber 531 are provided in the plug-in 53, and a first end 539a of the plug-in 53 is positioned close to the throttle hole 513 and an annular platform is formed on the first end 539a, which surrounds the negative pressure chamber 531 and extends outwardly to a predetermined height along the center line direction. 391, at least one notch 392 is formed on the annular platform 391, the annular platform 391 abuts against the radial wall 512 of the plug-in chamber 146 to form an air inlet channel 516 between the first end 539a and the plug-in chamber 146, which is connected to the outside of the water outlet portion 514, and the air inlet channel 516 is connected to the negative pressure chamber 531 through at least one notch 392, so that the negative pressure generated by the water flow throttled by the throttle hole 513 in the negative pressure chamber 531 can suck the outside air into the negative pressure chamber 531, and the air and the water flow are mixed in the mixing chamber 532 to form bubble water; and a micro-bubble generating net 54, which is configured to cut the bubble water into micro-bubble water.

[0057] Unless otherwise specified, the "upstream" and "downstream" mentioned in this article are relative to the water flow direction C shown in the drawings of the specification. The "upper wall", "lower wall", "left wall" and "right wall" mentioned in this article are all for the case where the bubble generator of the present invention is placed horizontally and the bubble generator is observed from the water outlet side. Unless otherwise specified, the "center line" mentioned in this article refers to the center line of the plug.

[0058] Figure 1 is a three-dimensional schematic diagram of an embodiment of a bubble generator of the present invention, Figure 2 yes Figure 1 A front view of an embodiment of a bubble generator of the present invention is shown, Figure 3 It is along Figure 2 A cross-sectional view of an embodiment of the bubble generator of the present invention taken along the section line AA. Figure 1-Figure 3 As shown, in one or more embodiments, the bubble generator 5 includes a box body 51, a plug-in 53 accommodated in the box body 51, a micro-bubble bubbling net 54, and a pressing plate 52 for fixing the micro-bubble bubbling net 54 on the second end 539b of the plug-in 53. Alternatively, the micro-bubble bubbling net 54 can also be fixed to the second end 539b of the plug-in 53 by other suitable means, such as a pressure ring or other structures.

[0059] like Figure 3 As shown, the box body 51 includes a water inlet 511, a water outlet 514 and a throttle hole 513 located between the water inlet 511 and the water outlet 514. The water inlet 511 and the water outlet 514 are formed as one body and share a radial wall 512. In one or more embodiments, an annular radial wall groove 517 with a second predetermined depth is formed from the radial wall 512 along the water flow direction C upstream. In one or more embodiments, the cross section of the radial wall groove 517 is roughly V-shaped. Alternatively, the cross section of the radial wall groove 517 can also adopt other suitable shapes, such as a U-shaped cross section. In one or more embodiments, the throttle hole 513 is formed at the center of the radial wall 512. Preferably, a conical boss 512a surrounding the throttle hole 513 and protruding slightly downstream is formed on the radial wall 512, and the outer diameter of the conical boss gradually decreases along the water flow direction C. Alternatively, the throttle hole 513 can be formed in the water inlet 511.

[0060] In one or more embodiments, the water inlet 511 is substantially cylindrical. Figure 3As shown, the water inlet 511 has a water inlet end 111, and the water inlet 511 can be connected to an external water source, such as tap water, through the water inlet end 111. Alternatively, the water inlet 511 can also adopt other suitable shapes, such as a water inlet with an elliptical cross-section. In one or more embodiments, a straight channel 113 and a pressurized channel 112 are respectively formed in the water inlet 511. The so-called "straight channel" refers to a channel whose diameter remains unchanged along the extended length. Figure 3 As shown, along the water flow direction C, the straight channel 113 extends from the water inlet end 111 to the pressurized channel 112, and the pressurized channel 112 extends from the straight channel 113 to the throttling hole 513. The diameter of the straight channel 113 remains unchanged along its extended length. The diameter of the pressurized channel 112 gradually decreases along the water flow direction C to form a tapered channel. The tapered channel can pressurize the water flowing through it, and the pressurized water can be rapidly expanded and ejected to the downstream through the throttling hole 513 and generate a large negative pressure. Optionally, the straight channel is omitted in the water inlet part 511, so that the pressurized channel 112 can extend from the water inlet end 111 to the throttling hole 513.

[0061] Figure 4 is a first stereoscopic schematic diagram of an embodiment of a box body of a bubble generator of the present invention; Figure 5 is a rear view of an embodiment of a box body of a bubble generator of the present invention; Figure 6 It is along Figure 5 A cross-sectional view of an embodiment of the box body of the bubble generator of the present invention taken along the section line BB. Figure 4-Figure 6 As shown, in one or more embodiments, an annular connecting sleeve groove 111a is provided on the outer periphery of the water inlet end 111, and the inner wall diameter of the water inlet end 111 is larger than the aperture of the straight channel 113. Figure 4-Figure 6 As shown, in one or more embodiments, four pipeline reinforcing ribs 114 are provided on the inner walls of the straight channel 113 and the pressurized channel 112, and the pipeline reinforcing ribs 114 are evenly distributed along the circumference, for example, arranged in the vertical direction and the horizontal direction respectively. Alternatively, more or less than four pipeline reinforcing ribs 114 may be provided on the inner walls of the straight channel 113 and the pressurized channel 112, for example, three or six pipeline reinforcing ribs 114 are evenly spaced along the circumference. Figure 4-Figure 6 As shown, in one or more embodiments, two water inlet pipe limiting strips 115 are respectively extended from two pipe reinforcing ribs 114 in a substantially horizontal position toward the center direction of the water inlet portion 511. Alternatively, the water inlet pipe limiting strips 115 can also be arranged on two pipe reinforcing ribs 114 in the vertical direction.

[0062] like Figures 1 to 3As shown, the water outlet portion 514 includes a plug-in chamber 146, an air suction groove 143 extending along the periphery of the plug-in chamber 146 and forming air communication therewith, and a water outlet 147 located downstream of the plug-in chamber 146. The plug-in chamber 146 is directly connected to the throttling hole 513 upstream thereof. The cross-section of the plug-in chamber 146 perpendicular to the water flow direction C is roughly circular. In one or more embodiments, along the water flow direction C, the water outlet portion 514 is a roughly hollow box-shaped structure having an upstream end, a downstream end, and four side surfaces located between the upstream end and the downstream end. The upstream end is connected to the water inlet portion 511, and the downstream end is an open opening. The plug-in chamber 146 extends between the upstream end and the downstream end. As shown in FIG. Figure 1 and Figure 2 As shown, an upper wall 141a, a lower wall 141b, a left wall 141c, and a right wall 141d are formed on the four sides of the water outlet portion 514. The upper wall 141a, the lower wall 141b, the left wall 141c, and the right wall 141d together constitute a circumferential outer wall 141. The circumferential outer wall 141 surrounds the entire plug-in chamber 146 in the circumferential direction. Figure 3 As shown, in one or more embodiments, the portion of the lower wall 141b close to the downstream end of the water outlet portion 514 gradually extends downward in the radial direction (relative to Figure 3 The water outlet 514 is enlarged (in the direction shown in the figure), and the space surrounded by the enlarged part forms an auxiliary water outlet 147. Alternatively, other forms of auxiliary water outlets can be formed on the downstream open end of the water outlet 514.

[0063] like Figure 1 and Figure 2 As shown, in one or more embodiments, a circumferential inner wall 142 is further formed between the circumferential outer wall 141 and the plug-in chamber 146. The circumferential inner wall 142 is substantially parallel to the circumferential outer wall 141 and forms a gap with a predetermined distance therebetween, which constitutes an air suction groove 143. The air suction groove 143 is completely open toward the downstream end of the water outlet 514, thereby allowing the outside air to enter the air suction groove 143 freely and in sufficient quantity. Accordingly, an air inlet 145 passing through the circumferential inner wall 142 is provided on the portion of the circumferential inner wall 142 located at the upstream end of the water outlet 514, so that air communication can be formed between the plug-in chamber 146 and the air suction groove 143. The air inlet 145 can be a narrow and long hole of appropriate size, or it can be one or more circular holes or rectangular holes, such as two circular holes or rectangular holes. The air inlet channel 516 is connected to the air suction groove 143 through the air inlet 145, so that air communication can be formed with the outside of the water outlet 514. Alternatively, the air inlet channel 516 may also be connected to the outside of the water outlet portion 514 through other forms of air channels provided on the water outlet portion. Figure 1 and Figure 2As shown, in one or more embodiments, the circumferential inner wall 142 extends along the upper wall 141a, the left wall 141c and the right wall 141d of the circumferential outer wall 141. Accordingly, the circumferential inner wall 142 includes an inner upper wall 142a which surrounds the plug-in chamber 146 in the middle position and is parallel to the upper wall 141a on both sides, an inner left wall 142b which is parallel to the left wall 141c, an inner right wall 142c which is parallel to the right wall 141d, an inner left lower wall 142d which is parallel to the upper wall 141a and extends between the lower end of the inner left wall 142b and the left wall 141c, and an inner right lower wall 142e which is parallel to the upper wall 141a and extends between the lower end of the inner right wall 142c and the right wall 141d. Therefore, the air suction groove 143 is a substantially U-shaped annular groove. Alternatively, the circumferential inner wall 142 extends only along the upper wall 141a, so that only an "I"-shaped air suction groove 143 is formed between the upper wall 141a and the inner upper wall 142a; or, the circumferential inner wall 142 extends along the upper wall 141a and the left wall 141c, so that an "L"-shaped air suction groove 143 is formed between the upper wall 141a, the left wall 141c and the inner upper wall 142a, the inner left wall 142b. Similarly, the circumferential inner wall 142 extends along the upper wall 141a and the right wall 141d, so that an "L"-shaped air suction groove 143 is formed between the upper wall 141a, the right wall 141d and the inner upper wall 142a, the inner right wall 142c. The design of the air suction groove 143 provides a very smooth air flow path for the bubble generator 5, so that the bubble generator 5 can inhale a large amount of ambient air from the outside.

[0064] Figure 7 is a second stereoscopic schematic diagram of an embodiment of a box body of a bubble generator of the present invention; Figure 8 is a front view of an embodiment of a box body of a bubble generator of the present invention; Fig. 9 It is along Figure 8 A cross-sectional view of an embodiment of the box body of the bubble generator of the present invention taken along the section line CC. Figure 7-Figure 9As shown, in one or more embodiments, fixed columns 148 extending from the upstream end to the downstream end of the box body to a preset height are respectively provided on both sides of the plug-in chamber 146. A longitudinal hole extending along the center line of the fixed column is provided on each fixed column 148, for example, for receiving a screw. The distance between the two fixed columns 148 exceeds the maximum outer diameter of the plug-in chamber 146 to avoid interference with the plug-in chamber 146. Each fixed column 148 is a cylinder with a through hole, and a parallel reinforcing rib 144 is formed between the side wall of each fixed column 148 and the inner upper wall 142a. Each reinforcing rib 144 is roughly L-shaped. The L-shaped has a long side connecting the fixed column 148 and a short side connecting the inner upper wall 142a. The portion of the L-shaped located at the downstream end forms a physical connection between the side wall of the fixed column 148 and the inner upper wall 142a, and the portion located at the upstream end leaves a gap between the side wall of the fixed column 148 and the inner upper wall 142a. Alternatively, the reinforcing rib 144 may be U-shaped, with two long sides connected to the side wall of the fixing column 148 and the inner upper wall 142, respectively, and the space formed between the two long sides is open toward the upstream end. A buckle 149 is formed on the upstream end of each reinforcing rib 144 at a preset gap from the box body 51, and each buckle 149 protrudes toward the plug-in chamber 146. The reinforcing rib 144 provides a firm connection foundation for the arrangement of the buckle. Figure 8 In the illustrated position, an arc-shaped lower limiting wall 140 extending from the upstream end to the downstream end is provided below the plug-in chamber 146. The lower limiting wall 140 provides a larger accommodating space for the plug-in chamber 146 and makes the contactable surface area below the plug-in chamber 146 larger. When the plug-in 53 is received, a larger contact area can be provided for the corresponding lower surface of the plug-in 53.

[0065] Fig.10 is a first stereoscopic schematic diagram of an embodiment of a plug-in unit of a bubble generator of the present invention, and Fig.11 2 is a second perspective view of an embodiment of a plug-in unit of a bubble generator according to the present invention. Fig.10 and Fig.11 As shown, the plug-in 53 is a generally cylindrical structure that matches the plug-in chamber 146. The plug-in 53 has a first end 539a and a second end 539b. Figure 3As shown, when the plug-in 53 is assembled into the plug-in chamber 146, the first end 539a of the plug-in 53 is placed in the upstream end of the water outlet 514, so it is close to the throttle hole 513 and the air inlet 145. On the first end 539a of the plug-in 53, an annular platform 391 of a predetermined height extends outward from the end surface of the first end 539a along the centerline direction. The radial width of the annular platform 391 is smaller than the end surface width of the first end 539a, so that when the plug-in 53 is inserted into the plug-in chamber 146, the annular platform 391 abuts against the radial wall 512 to form an axial gap with a substantially predetermined height between the first end 539a and the radial wall 512, and the axial gap constitutes the air inlet channel 516 of the present invention. Two notches 392 are provided at intervals on the annular platform 391. Alternatively, one notch or more than two notches may also be provided. The air inlet channel 516 is communicated with the notch 392 and the air inlet 145 respectively, so it can also form air communication with the air suction groove 143. An annular groove 530 with a first predetermined depth extends inwardly from the end surface of the first end 539a along the center line direction in the first end 539a. Therefore, the annular groove 530 is also connected to the air inlet passage 516. The radial wall groove 517 formed on the radial wall 512 is also connected to the air passage 516. The annular groove 530 and the radial wall groove 517 expand the air circulation space for the air inlet passage 516, so that the amount of air that can be sucked into the negative pressure chamber 531 is more sufficient. Figure 3 As shown, in one or more embodiments, an annular sealing groove 533 is further provided on the circumferential outer wall of the plug 53 near the first end 539a. The sealing groove 533 is used to accommodate a plug sealing ring 534, thereby forming a fluid seal between the plug 53 and the inner wall of the plug chamber 146.

[0066] like Figure 3 , Fig.10 and Fig.11As shown, in one or more embodiments, inside the plug-in 53, along the center line of the plug-in 53, from the first end 539a to the second end 539b, a negative pressure chamber 531, a transition hole 536, a mixing chamber 532, and a straight mixing chamber 537 are sequentially formed. The annular platform 391 surrounds the negative pressure chamber 531. In the assembled state of the bubble generator 5, the negative pressure chamber 531 is located downstream of the throttle hole 513 and is directly connected to the throttle hole 513. The conical boss 512a on the radial wall 512 extends into the upstream end of the negative pressure chamber 531 and leaves a gap between the annular platform 391 in the radial direction. The negative pressure chamber 531 is connected to the air inlet channel 516 through the notch 392. In one or more embodiments, the diameter of the negative pressure chamber 531 gradually decreases along the water flow direction C, so that the negative pressure chamber 531 forms a tapered cavity with a gradually decreasing diameter. This tapered cavity with a gradually decreasing diameter can enhance the suction of air, so that more external air can enter the negative pressure chamber 531. The mixing chamber 532 is connected to the negative pressure chamber 531 through a transition hole 536. The diameter of the transition hole 536 is approximately the same as the minimum diameter of the negative pressure chamber 531. In one or more embodiments, the diameter of the mixing chamber 532 gradually increases along the water flow direction C, so that the mixing chamber 532 forms a tapered mixing chamber with a gradually expanding diameter. In one or more embodiments, the mixing chamber 532 is surrounded by a tapered wall, and a plurality of reinforcing ribs 321 spaced apart in the circumferential direction are provided on the outer periphery of the tapered wall, each reinforcing rib 321 extends outwardly from the outer periphery of the tapered wall approximately radially or obliquely, and can reach a height flush with the outer peripheral wall of the plug-in 53. By providing the reinforcing ribs 321, the wall thickness of the mixing portion is ensured to be uniform, which is convenient for the molding of the plug-in 53, and the manufacturing material of the plug-in 53 is also reduced, saving costs. An additional mixing chamber with the maximum diameter of the tapered chamber is also formed downstream of the tapered chamber with a gradually expanding diameter, which is called a straight-cylinder mixing chamber 537, so that air and water can be fully mixed. Protrusions 371 cooperating with the buckles 149 are provided on both sides of the outer periphery of the straight mixing chamber 537 to ensure that the plug-in 53 can be stably and reliably installed in the plug-in chamber 146. Alternatively, the straight mixing chamber 537 can be eliminated in the plug-in 53. Fig.11 As shown, a plurality of overflow ports 535 are provided on the second end 539b of the plug-in 53. These overflow ports 535 are distributed on the annular end surface of the second end 539b, for example, located in the middle and lower positions of the annular end surface, and are spaced apart from each other by a predetermined distance. According to actual needs, the distances between adjacent overflow ports 535 may be the same or different. In the case of insufficient water pressure, the water flow may not be able to quickly penetrate the microbubble bubbling net 54, and therefore will accumulate in the mixing chamber. These overflow ports allow the water flow to flow out through them, thereby avoiding the problem of the microbubble bubbling net 54 being blocked and the inability to inhale due to the accumulation of water flow in the mixing chamber, thereby ensuring the high reliability of the bubble generator 5 in continuously generating microbubble water.

[0067] like Figure 3 As shown, the microbubble bubbling net 54 is fixed to the second end 539b of the plug-in 53 by the pressing plate 52. An annular step having a maximum diameter smaller than the maximum diameter of the second end 539b is formed on the end surface of the second end 539b of the plug-in 53. The annular step forms a mesh groove 538. The microbubble bubbling net 54 can be placed in the mesh groove 538 and abut against the mesh groove 538. In one or more embodiments, the microbubble bubbling net 54 includes a multi-layer mesh structure, such as two layers, three layers or more layers. Each layer of the mesh structure has at least one mesh hole with a diameter of micron level. Preferably, the diameter of the mesh hole is between 0 and 1000 microns; more preferably, the diameter of the mesh hole is between 5 and 500 microns. The filter screen can be a plastic fence, a metal mesh, a polymer material mesh, or other suitable mesh structure. The plastic fence generally refers to a polymer fence, which is integrally injection molded by a polymer material, or the polymer material is first made into a plate, and then a microporous structure is produced on the plate by machining to form a plastic fence. The polymer material net generally refers to a net with a microporous structure made by first making the polymer material into a thread and then weaving the thread. The polymer material net may include a nylon net, a cotton net, a polyester net, a polypropylene net, etc. Alternatively, the net structure may be other mesh structures capable of generating microbubbles, such as a mesh structure composed of two non-micrometer-level honeycomb structures. When the bubble water flows through the mesh structure, the mesh structure has a mixing and cutting effect on the bubble water, thereby generating a large amount of microbubble water.

[0068] Fig.12 is a first stereoscopic schematic diagram of an embodiment of a pressure plate of a bubble generator of the present invention, and Fig.13 2 is a second perspective schematic diagram of an embodiment of a pressure plate of a bubble generator of the present invention. Fig.12 and Fig.13As shown, in one or more embodiments, the pressing plate 52 has a plate-like body 521 and a pressing leg 522 extending outward from the inner side 521a of the plate-like body 521. In the assembled state of the bubble generator 5, the inner side 521a of the plate-like body 521 faces the microbubble bubbling net 54, and is therefore referred to as the "inner side". Correspondingly, the side of the plate-like body 521 that faces away from the microbubble bubbling net 54 is referred to as the outer side 521d. A microbubble water outlet 526 is formed at a substantially central position of the plate-like body 521. The diameter of the microbubble water outlet 526 is substantially consistent with the end face diameter of the second end 539b of the plug-in 53. The microbubble water flowing out of the microbubble bubbling net 54 is mainly ejected from the microbubble water outlet 526. The plate-like body 521 also has an upper edge 521b and a lower edge 521c. In the assembled state of the bubble generator 5, the plate-like body 521 basically covers the downstream end of the water outlet 514, the upper edge 521b of the plate-like body 521 is adjacent to the upper wall 142a of the circumferential inner wall 142, and the lower edge 521c of the plate-like body 521 is close to the lower wall 141b of the circumferential outer wall 141 and the auxiliary water outlet 147. Therefore, the plate-like body 521 can serve as the downstream end cover of the water outlet 514, and only the auxiliary water outlet 147 and the air suction groove 143 need to be exposed. Optionally, the upper edge 521b and both side edges of the plate-like body 521 can partially extend inward to form a pressure plate guide edge 527, which plays a positioning and guiding role in the assembled state of the bubble generator 5. Fig.12 and Fig.13 As shown, in one or more embodiments, the pressing plate 52 is fixed to the water outlet 514 of the box body 51 by screws or screws. Accordingly, two fixing holes 524 are formed on the plate-like body 521. The two fixing holes 524 are distributed on the left and right sides of the plate-like body 521, and the pressing plate 52 is fixed to the fixing column 148 of the water outlet 514 by screws or screws extending through the fixing holes 524. Alternatively, the pressing plate 52 can also be fixed to the water outlet 514 in other suitable ways, such as by a snap-fit ​​structure.

[0069] like Fig.12 and Fig.13 As shown, in one or more embodiments, the pressure legs 522 include a plurality of pressure legs, which are arranged in a ring shape, and the ring shape corresponds to the end surface of the second end 539b of the plug 53, so that the pressure plate 52 can press the microbubble bubbler 54 against the mesh groove 538 located on the second end 539b of the plug 53 through these pressure legs. Through these pressure legs, a microbubble water chamber 515 for receiving microbubble water is formed between the plate-like body 521 and the microbubble bubble net 54. Circumferential gaps 523 are formed between adjacent pressure legs to allow microbubble water to flow from the microbubble water chamber 515 to the auxiliary water outlet 147 through these circumferential gaps 523. Fig.12As shown, in one or more embodiments, a plurality of leg presses 522 include a first leg press 522a and a plurality of second leg presses 522b. Along the circumferential direction, the width of the first leg press 522a is greater than each second leg press 522b. When assembling the bubble generator 5, the first leg press 522a with a relatively large width can play a role in positioning and alignment. Alternatively, the leg press 522 can form a tubular structure that can match the second end 539b end face of the plug-in 53, and a large opening that can be aligned with the auxiliary water outlet 147 is provided on the side wall of the tubular structure to allow microbubble water to flow into the auxiliary water outlet 147 from the microbubble water chamber 515. A plug-in guide edge 525 that can wrap the outer periphery of the plug-in 53 is extended from the inner side 521a of the plate-like body 521 around the leg press 522. In the assembled state of the bubble generator 5, the plug-in guide edge 525 plays a guiding role, and makes the installation of the plug-in in the plug-in chamber more secure.

[0070] When the bubble generator 5 is working, water from an external water source enters the water inlet 511 from the water inlet end 111. Along the water flow direction C, the water flow is pressurized through the pressure channel 112 and then expanded through the throttle hole 513 and sprayed into the negative pressure chamber 531, and negative pressure is generated in the negative pressure chamber. Under the action of negative pressure, a large amount of external air is sucked into the negative pressure chamber 531 from the air suction groove 143 through the air inlet 145 and the air inlet channel 516 through the gap 392. Then, the air and the water flow flow into the mixing chamber 532 together and are more fully mixed therein to produce bubble water. The bubble water then flows to the microbubble bubbler 54 and is cut and further mixed by the microbubble bubbler 54 to form microbubble water containing a large number of microbubbles. The microbubble water is sprayed out from the microbubble water chamber 515 through the microbubble water outlet 526 on the pressing plate 52. Water overflowing from the overflow port 535 and / or microbubble water flowing out from the circumferential gap 523 between the press legs 522 may flow out through the auxiliary water outlet 147 .

[0071] The present invention also provides a washing device, which includes the bubble generator 5 of the present invention. The bubble generator 5 is arranged in the washing device to provide micro bubble water. Through the bubble generator, not only can the washing ability of the washing device be improved, but also the amount of washing treatment agent used can be reduced and the residual amount of washing treatment agent in, for example, clothes can be reduced, thereby not only benefiting the health of users, but also improving the user experience.

[0072] Fig.14 1 is a schematic diagram of the structure of an embodiment of the washing device of the present invention. In this embodiment, the washing device is a pulsator washing machine 1. Alternatively, in other embodiments, the washing device may be a drum washing machine or a drying machine.

[0073] like Fig.14As shown, a pulsator washing machine 1 (hereinafter referred to as washing machine) includes a housing 11. A foot 14 is provided at the bottom of the housing 11. A pan seat 12 is provided at the upper part of the housing 11, and an upper cover 13 is pivotally connected to the pan seat 12. A washing tub 10 is provided in the housing 11, and the washing tub 10 includes an outer tub 21 as a water storage tub. An inner tub 31 is provided in the outer tub 21, and a pulsator 32 is provided at the bottom of the inner tub 31. A motor 34 is fixed to the lower part of the outer tub 21, and the motor 34 is connected to the pulsator 32 through a transmission shaft 33. A dehydration hole 311 is provided on the side wall of the inner tub 31. A drain valve 41 is provided on a drain pipe 42, and the upstream end of the drain pipe 42 is connected to the bottom of the outer tub 21. The washing machine also includes a water inlet valve 61, a water inlet pipe 62 connected to the water inlet valve 61 at one end, a bubble generator 5 connected to the other end of the water inlet pipe 62, and a connecting mechanism 17 connecting the water inlet pipe 62 and the bubble generator 5. The bubble generator 5 is mounted on the disc base 12. The bubble generator 5 may be any of the bubble generators described above.

[0074] Fig.15 is a first stereoscopic schematic diagram of an embodiment of a connection mechanism of a washing device of the present invention; Fig.16 FIG. 2 is a second perspective schematic diagram of an embodiment of the connection mechanism of the washing device of the present invention. Fig.15 and 16 As shown, in one or more embodiments, the connection mechanism 17 includes a connection sleeve 71, a holder 72, and a fixing member 73. The connection sleeve 71 is generally a cylindrical sleeve structure, and a connection protrusion 711 is formed on the inner wall of one end of the connection sleeve 71, and a claw groove 712 is formed on the inner wall of the other end of the connection sleeve. The holder 72 includes a circular ring disk 722 and a plurality of claws 721 extending outward from the inner side surface of the circular ring disk 722 (toward the connection sleeve 71) in a direction perpendicular to the circular ring disk 722. The plurality of claws 721 are distributed in the circumferential direction, for example, 4 claws 721 are provided. The holder 72 is connected to the claw groove 712 of the connection sleeve 71 through the claws 721. In the assembled state of the connection mechanism 17, an axial space for installing the fixing member 73 is reserved between the circular ring disk 722 of the holder 72 and the end surface of the connection sleeve 71. The fixing member 73 is a roughly crescent-shaped structure that can be clamped on the outer periphery of the claw 721, and its two ends respectively abut against the end surface of the annular disk 722 and the end surface of the connecting sleeve 71. Alternatively, the fixing member 73 can also be set as an open ring structure. An arc-shaped protrusion 731 extends outward along the outer periphery of the fixing member 73 and along the center line direction of the fixing member 73 at a roughly middle position of the fixing member 73. An arc-shaped groove 732 that can be connected to the box body 11 is provided at the top of the arc-shaped protrusion 731. In the assembled state of the connecting mechanism 17, the arc-shaped protrusion 731 is located above the annular disk 722. Alternatively, the arc-shaped protrusion 731 can also be eliminated.

[0075] like Figure 3As shown, in one or more embodiments, the connection mechanism 17 is connected to the water inlet pipe 62 through the holder 72 sleeved on the outside of the water inlet pipe 62, and is connected to the connection sleeve groove 111a on the water inlet end 111 through the connection protrusion 711. The water inlet pipe 62 passes through the water inlet end 111 and extends into the straight channel 113. Two water inlet pipe sealing rings 18 are sleeved on the outside of the water inlet pipe 62. Since the aperture of the water inlet end 111 (slightly smaller than the outer diameter of the water inlet sealing ring 18) is larger than the aperture of the straight channel 113 (slightly larger than the outer diameter of the water inlet pipe), the water inlet pipe sealing ring 18 is stuck at the junction of the water inlet end 111 and the straight channel 113. Therefore, a fluid seal is formed between the inner wall of the water inlet end 111 and the outer wall of the water inlet pipe. Alternatively, one or more water inlet pipe sealing rings 18 are provided on the outside of the water inlet pipe 62. The four pipe reinforcing ribs 114 arranged on the inner walls of the straight channel 113 and the pressurized channel 112 can better position the water inlet pipe 62 at the center of the channel to prevent the water inlet pipe 62 from deviating to one side and affecting the water inlet effect. The end position of the water inlet pipe 62 that can be extended can be limited in the straight channel 113 by the water inlet pipe limit strip 115 to prevent the water inlet pipe from being extended too deep into the pressurized channel 112 due to operating errors during installation.

[0076] like Fig.14 As shown, in one or more embodiments, water from a water source (e.g., tap water or recyclable water) enters the bubble generator 5 via the water inlet valve 61 and the water inlet pipe 62, and microbubble water is generated by the bubble generator 5. The generated microbubble water is mainly sprayed from the microbubble water outlet on the pressing plate 52 to the inner turning edge of the tray seat 12, and the inner turning edge can play a role of blocking water, so that the microbubble water is redirected to flow into the inner tub 31 and / or the outer tub 21 for washing clothes and the like. Water from the overflow port 535 of the plug-in 53 and water splashed from between the pressing legs 522 flow out from the auxiliary water outlet 147 and then also enter the inner tub 31 and / or the outer tub 21. The microbubbles in the water collide with the detergent during the breaking process, and the microbubbles can also absorb the detergent by carrying negative charges, so the microbubbles can increase the mixing degree of the detergent and water, thereby reducing the amount of the detergent and reducing the residual amount of the detergent on the clothes. In addition, the microbubbles also hit the stains on the clothes in the inner tub 31 and absorb the foreign matter that caused the stains. Therefore, the microbubbles enhance the decontamination performance of the washing machine.

[0077] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art may combine the technical features from different embodiments, or make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A bubble generator, characterized in that: The bubble generator comprises: The box body comprises a water inlet, a water outlet, and a throttle hole between the water inlet and the water outlet, wherein the water inlet is provided with a water inlet end, and the water outlet is provided with a plug-in chamber; A plug-in configured to be accommodated in the plug-in chamber, wherein a negative pressure chamber and a mixing chamber located downstream of the negative pressure chamber are provided in the plug-in, wherein a first end of the plug-in is positioned close to the throttling hole and an annular platform is formed on the first end, which surrounds the negative pressure chamber and extends outwardly in the center line direction to a predetermined height, wherein at least one notch is formed on the annular platform, wherein the annular platform abuts against a radial wall of the plug-in chamber to form an air inlet passage between the first end and the plug-in chamber for connecting air to the outside of the water outlet, wherein the air inlet passage is connected to the negative pressure chamber through the at least one notch, so that the negative pressure generated in the negative pressure chamber by the water flow throttled by the throttling hole can suck the outside air into the negative pressure chamber, and the air and water flow are mixed in the mixing chamber to form bubble water; and a micro-bubble bubbling net, which can be fixed to the second end of the insert and is configured to cut the bubble water into micro-bubble water; wherein an annular groove surrounding the annular platform is further formed on the first end of the plug-in, the annular groove extends from the end surface of the first end along the center line direction within the first end to a first predetermined depth, and the annular groove is communicated with the air inlet passage; A radial wall groove having a second predetermined depth is formed on the radial wall of the plug-in chamber, and the radial wall groove is opposite to the annular groove and communicated with the air intake passage.

2. The bubble generator according to claim 1, characterized in that: The at least one notch includes two notches that are spaced apart from each other.

3. The bubble generator according to claim 1, characterized in that: The bubble generator also includes a pressing plate, which includes a plate-like body and a pressing leg extending outward from the inner side of the plate-like body. The pressing plate presses the microbubble bubbling net against the second end of the plug-in through the pressing leg, so that a microbubble water chamber for receiving the microbubble water is formed between the microbubble bubbling net and the plate-like body, and a microbubble water outlet is provided on the plate-like body.

4. The bubble generator according to claim 3, characterized in that: The press legs include a plurality of press legs, which are arranged in a ring shape matching the second end of the insert and forming a circumferential gap between adjacent press legs, and the microbubble water can also flow out of the microbubble water chamber through the circumferential gap.

5. The bubble generator according to claim 3, characterized in that: The water outlet portion includes a circumferential outer wall and a circumferential inner wall surrounding the plug-in chamber, the circumferential outer wall is composed of an upper wall, a lower wall, a left wall and a right wall, the circumferential inner wall extends in parallel along at least a portion of the upper wall, the left wall and the right wall, and an air inlet groove connected to the outside air is formed between the circumferential outer wall and the circumferential inner wall, and the air inlet groove is air-connected with the air inlet channel via an air inlet port formed on the circumferential inner wall.

6. The bubble generator according to claim 5, characterized in that: The portion of the lower wall adjacent to the second end of the insert expands radially outward to form an auxiliary water outlet located downstream of the insert chamber.

7. A washing device, characterized in that: The washing equipment comprises: Box; A washing drum, which is arranged in the box; a water inlet pipe mounted on the tank and configured to be connectable to an external water source; and According to the bubble generator according to any one of claims 1 to 6, the bubble generator is connected to the water inlet pipe through a connecting mechanism and provides micro-bubble water to the washing tub.

8. The washing device according to claim 7, characterized in that: The connecting mechanism comprises: A connecting sleeve, which is configured to be connectable to the water inlet end; A holder configured to be sleeved on the water inlet pipe, the holder being provided with a connection groove and a plurality of claws, the connection groove surrounding the outer peripheral wall of the holder, the claws being formed on one end of the holder and being evenly spaced along the circumference of the holder, the claws being configured to be clamped on the connection sleeve; and The fixing member is configured to be connected to the box body and can be stuck in the connecting groove.

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