CN114808384A - Bubble generator and washing equipment with same - Google Patents

Abstract

The invention relates to a bubble generator and a washing device with the same. The bubble generator comprises a box body, a water inlet part, a water outlet part and a throttling hole positioned between the water inlet part and the water outlet part, wherein the water inlet part is provided with a water inlet end, and the water outlet part is provided with a plug-in room; an insert configured to be received within the insert chamber, a negative pressure chamber and a mixing chamber located downstream of the negative pressure chamber being provided within the insert, a first end of the insert being located adjacent the orifice and having formed thereon an annular land surrounding the negative pressure chamber and extending outwardly in a centerline direction a predetermined height, the annular land having formed thereon at least one notch, the annular land abutting against a radial wall of the insert chamber to form an air inlet passage between the first end and the insert chamber for air communication with an exterior of the water outlet portion, the air inlet passage communicating with the negative pressure chamber through the notch, a negative pressure generated within the negative pressure chamber by a flow of water flowing through the orifice drawing ambient air into the negative pressure chamber, the air and the flow of water mixing to form bubble water within the mixing chamber; a micro-bubble froth network configured to cut bubble water into micro-bubble water.

Description

Bubble generator and washing equipment with same

Technical Field

The invention relates to the field of washing, in particular to a bubble generator and washing equipment with the bubble generator.

Background

Micro-bubbles (micro-bubbles) generally refer to micro-bubbles having a diameter of fifty micrometers (μm) or less when the bubbles occur. Micro-bubbles may also be referred to as micro-/nano-bubbles, micro-bubbles or nano-bubbles depending on their diameter range. Microbubbles have a relatively long residence time in a liquid because of their small buoyancy in the liquid. Moreover, the microbubbles will shrink in the liquid until finally breaking, generating smaller nanobubbles. In this process, the rise speed of the bubbles becomes slow because they become small, resulting in high melting efficiency. When the microbubbles are broken, high pressure and high temperature heat are locally generated, and thus foreign substances such as organic substances floating in the liquid or adhering to the object can be destroyed. In addition, the contraction process of the microbubbles is accompanied by an increase in negative charge, and the peak state of the negative charge is usually when the diameter of the microbubbles is 1 to 30 μm, so that positively charged foreign substances floating in the liquid are easily adsorbed. The result is that the foreign matter is adsorbed by the microbubbles after it is destroyed by the breaking of the microbubbles, and then slowly floats to the surface of the liquid. These properties provide the microbubbles with a strong cleaning and purifying power. At present, microbubbles have been widely used in washing apparatuses such as washing machines.

For example, chinese patent CN108396516B discloses a pulsator washing machine having a water injection device disposed in a tray. The water injection device has a connection port connected to a water supply source, a water injection cartridge, and a fine bubble generator disposed between the connection port and the water injection cartridge. Specifically, the fine bubble generator disclosed in CN108396516B has a cylindrical nozzle in which a tapered passage portion with a decreasing diameter, a protrusion portion (forming an orifice), and a mixing chamber (having a diameter larger than that of the orifice and remaining constant) are formed along the water flow direction. After the electromagnetic water supply valve is opened, the water flow from the main water pipe is rapidly depressurized while passing through such a fine bubble generator, so that air in the water flow is precipitated to generate micro-bubbles in the water, thereby forming micro-bubble water. The micro-bubble water enters the washing drum to be used for washing the clothes. However, such a fine bubble generator can generate fine bubbles only by virtue of extremely limited air carried in the liquid flowing therethrough, and thus, the fine bubble generator cannot supply fine bubble water containing a sufficient amount of fine bubbles.

For another example, chinese patent application CN111417455A discloses a fine bubble generator including a flow path forming portion forming a flow path through which a liquid can pass, and a pressure reducing member having an impact portion that is fitted into the flow path forming portion to locally reduce the cross-sectional area of the flow path, thereby generating fine bubbles in the liquid passing through the flow path. The fine bubble generator further includes: an outlet connected to the negative pressure generating portion of the pressure reducing member; an external air inlet provided in the flow path structure section for introducing external air; and an outside air introduction path that communicates the outside air introduction port and the outlet. The outside air can be sucked in by the negative pressure of the negative pressure generating portion. However, the fine bubble generator has a limited air intake amount and a poor micro bubble generation effect, so that the washing effect still has a large space for improving, and the residual detergent may cause a hidden danger to the health of the user.

Accordingly, there is a need in the art for a new solution to the above problems.

Disclosure of Invention

In order to solve the above-mentioned problems in the prior art, that is, to solve the technical problem of low micro-bubble generation efficiency of the existing water injection device, the present invention provides a bubble generator, comprising: the box body comprises a water inlet part, a water outlet part and a throttling hole positioned between the water inlet part and the water outlet part, wherein the water inlet part is provided with a water inlet end, and the water outlet part is provided with a plug-in room; an insert configured to be received within the insert chamber, a negative pressure cavity and a mixing cavity downstream of the negative pressure cavity being disposed within the insert, a first end of the insert is positioned close to the orifice and is formed with an annular land on the first end that surrounds the negative pressure chamber and extends outward in a centerline direction by a predetermined height, at least one notch is formed on the annular table, the annular table abuts against the radial wall of the insert chamber to form an air inlet channel between the first end and the insert chamber, the air inlet channel is communicated with the outside of the water outlet part, the air inlet channel is communicated with the negative pressure cavity through the at least one notch, so that external air can be sucked into the negative pressure cavity by negative pressure generated in the negative pressure cavity by water flow throttled by the throttle hole, and the air and the water flow are mixed in the mixing cavity to form bubble water; and a micro-bubble froth network securable to the second end of the insert and configured to cut the bubble water into micro-bubble water.

In a preferred embodiment of the above bubble generator, the at least one notch includes two notches spaced apart from each other.

In a preferred embodiment of the above bubble generator, an annular groove surrounding the annular land is further formed on the first end of the insert, the annular groove extending a first predetermined depth from an end surface of the first end in the center line direction, and the annular groove communicating with the intake passage.

In a preferred embodiment of the above bubble generator, a radial wall groove having a second predetermined depth is formed on a radial wall of the insert chamber, the radial wall groove being opposed to the annular groove and communicating with the intake passage.

In the preferable technical scheme of the above bubble generator, the bubble generator further comprises a pressing plate, the pressing plate comprises a plate-shaped body and pressing legs extending outwards from the inner side surface of the plate-shaped body, the pressing plate presses the micro-bubble foaming net against the second end of the plug-in piece through the pressing legs, so that a micro-bubble water chamber for receiving micro-bubble water is formed between the micro-bubble foaming net and the plate-shaped body, and a micro-bubble water outlet is formed in the plate-shaped body.

In a preferred embodiment of the above bubble generator, the pressing legs include a plurality of pressing legs, the plurality of pressing legs are arranged in a ring shape matching the second end of the insert and form a circumferential gap between adjacent pressing legs, and the micro bubble water can further flow out from the micro bubble water chamber through the circumferential gap.

In a preferred embodiment of the above bubble generator, the water outlet portion includes a circumferential outer wall and a circumferential inner wall surrounding the insert 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 part of the upper wall, the left wall, and the right wall, an air intake groove communicating with the outside air is formed between the circumferential outer wall and the circumferential inner wall, and the air intake groove is in air communication with the air intake passage via an air intake port formed on the circumferential inner wall.

In a preferred embodiment of the above bubble generator, a portion of the lower wall adjacent to the second end of the insert is enlarged radially outwardly to form an auxiliary water outlet downstream of the insert chamber.

In the preferable technical scheme of the bubble generator, along the flow direction of the water flow, the diameter of the inner wall of the negative pressure cavity is gradually reduced, and the diameter of the inner wall of the mixing cavity is gradually enlarged.

In a preferred embodiment of the above bubble generator, a plurality of reinforcing ribs are provided on the outer periphery of the tapered wall surrounding the mixing chamber so as to be spaced apart from each other in the circumferential direction.

In a preferred embodiment of the bubble generator, a plurality of overflow ports are provided at the second end of the insert.

In a preferred embodiment of the above bubble generator, a plurality of pipe ribs spaced apart from each other in the circumferential direction are provided on an inner wall of the water inlet portion.

In a preferred embodiment of the above bubble generator, the micro bubble foaming net includes a multi-layer net structure, and each layer of the net structure has at least one mesh with a diameter of micron order.

It will be appreciated by those skilled in the art that in the embodiments of the bubble generator of the present invention, the bubble generator comprises a cartridge, an insert, and a micro-bubble bubbling net. The box body comprises a water inlet part, a water outlet part and a throttling hole for communicating the water inlet part and the water outlet part by fluid. The box body is provided with a plug-in chamber. The negative pressure cavity and the mixing cavity located at the downstream of the negative pressure cavity are arranged in the plug-in unit which can be accommodated in the plug-in unit chamber, the first end of the plug-in unit is located close to the throttling hole, an annular table which surrounds the negative pressure cavity and extends outwards along the direction of the central line to a preset height is formed on the first end of the plug-in unit, at least one notch is formed on the annular table, the annular table abuts against the radial wall of the plug-in unit chamber to form an air inlet channel which is communicated with the outside of the water outlet part through air, the air inlet channel is communicated with the negative pressure cavity through the notch, so that the negative pressure generated in the negative pressure cavity by the water flow throttled by the throttling hole can suck the outside air into the negative pressure cavity, and the air and the water flow are fully mixed in the mixing cavity to form bubble water. By means of the negative pressure, a large amount of outside air can be sucked into the negative pressure chamber through the notch and the intake passage. The air sucked in is sufficiently mixed with the water flow by the mixing chamber to provide bubble water containing a large number of bubbles. The bubble water is cut and mixed by the micro-bubble foaming net to form micro-bubble water containing abundant micro-bubbles. Therefore, the bubble generator of the present invention significantly increases the microbubble content in the microbubble water.

Preferably, two notches are provided on the annular table spaced apart from each other to allow air to be sucked in from different directions, thereby increasing the amount of air to be sucked in.

Preferably, an annular groove extending from the end face of the first end to a first predetermined depth in the first end in the direction of the center line is provided on the first end of the insert, and the annular groove communicates with the air intake passage. The annular groove can be used for facilitating production and demoulding, storing a certain amount of air and providing more air for the negative pressure cavity.

Preferably, a radial wall groove having a second predetermined depth is formed on the radial wall of the insert chamber, the radial wall groove being opposite to the annular groove and communicating with the intake passage. This radial wall recess makes the box body have even wall thickness, guarantees the shaping of box body. Meanwhile, the volume of the air inlet channel is enlarged, the air storage capacity is further increased, and the negative pressure cavity can suck enough air.

Preferably, the bubble generator further comprises a pressing plate consisting of a plate-shaped body and pressing legs, the pressing plate presses the micro-bubble foaming net against the second end of the insert through the pressing legs, and a micro-bubble water chamber for receiving micro-bubble water is formed between the micro-bubble foaming net and the plate-shaped body. The micro bubble water can be guided to the micro bubble water outlet through the micro bubble water chamber. Furthermore, the plate-shaped body can serve as an end cap of the water outlet part of the box body.

Preferably, the plurality of press legs are arranged in a ring shape matched with the second end of the insert, and a circumferential gap capable of discharging micro-bubble water is formed between adjacent press legs, and the circumferential gap can increase the degree of freedom for discharging the micro-bubble water.

Preferably, the water outlet portion includes a circumferential outer wall and a circumferential inner wall surrounding the insert chamber, the circumferential outer wall being constituted by an upper wall, a lower wall, a left wall and a right wall, the circumferential inner wall extending in parallel along at least a part of the upper wall, the left wall and the right wall, the air suction groove being formed between the circumferential outer wall and the circumferential inner wall and being in air communication with the air intake passage via an air inlet formed on the circumferential inner wall. The air suction grooves are arranged between the circumferential outer wall and the circumferential inner wall which are mutually separated and arranged in parallel, and the circumferential inner wall is provided with the air inlet which can be communicated with the negative pressure cavity, so that the air suction grooves with enough size are provided, the blockage of the air suction grooves and the air inlet can be avoided, and the sufficient air can be ensured to smoothly flow into the negative pressure cavity.

Preferably, a portion of the lower wall of the outlet portion adjacent the second end of the insert is enlarged radially outwardly to form a secondary outlet. Water from the overflow and/or micro-bubble water flowing out of the circumferential gap between the press legs can be discharged from the auxiliary water outlet.

Preferably, the inner diameter of the negative pressure chamber is gradually reduced along the flow direction of the water flow to form a tapered chamber, and the inner diameter of the mixing chamber is gradually enlarged to form a tapered chamber. The negative pressure chamber is configured to enhance the intake of air, while the mixing chamber is configured to enhance the mixing of air and water.

Preferably, a plurality of reinforcing ribs which are spaced from each other in the circumferential direction are arranged on the periphery of the conical wall which encloses the mixing cavity, so that the strength of the mixing cavity part of the insert can be increased, and the process forming of the insert is facilitated.

Preferably, a plurality of overflow ports are provided on the second end of the insert. When the water pressure in the spray pipe is not enough, therefore rivers can not run through little bubble and play the bubble net fast, rivers can follow these overflow mouth and flow, have avoided because of rivers accumulate in the mixing chamber and plug up little bubble and play the bubble net and can't the problem of breathing in to guarantee that bubble generator lasts the high reliability that produces little bubble water.

Preferably, a plurality of pipeline reinforcing ribs are arranged on the inner wall of the water inlet part, so that the strength of the water inlet part can be enhanced, and the positioning effect on the water inlet pipe arranged inside can be realized.

Preferably, the micro-bubble foaming net is a multi-layer net structure, and the diameter of the micro-bubbles can be obviously reduced and the mixing degree of the micro-bubbles and water can be increased by matching with micro-pores on each layer of net structure.

In order to solve the above problems in the prior art, i.e. to solve the technical problems that the washing effect of the prior washing device is not good and the residual detergent may cause hidden troubles to the health of users, the present invention also provides a washing device, comprising: the bubble generator is connected with the water inlet pipe through a connecting mechanism and provides micro-bubble water for the washing drum. The micro-bubble water is sprayed into the washing barrel, so that the washing capacity of the washing equipment can be improved, and meanwhile, the using amount of the washing treatment agent can be saved, and the health of a user is facilitated.

In a preferred embodiment of the above washing apparatus, the connection mechanism includes: the water inlet device comprises a connecting sleeve which can be connected with a water inlet end, a clamping seat which can be sleeved on a water inlet pipe and is provided with a connecting groove and a plurality of clamping jaws, and a fixing piece which can be connected with the box body and can be clamped in the connecting groove. The connecting groove encircles the periphery wall of cassette, the jack catch form on one end of cassette and along the even interval of circumference formation of cassette, the cassette passes through the jack catch to be connected with the adapter sleeve. The connection mechanism is connected with the water inlet pipe and the bubble generator and simultaneously connected with the bubble generator and the box body, so that the connection among the water inlet pipe, the bubble generator and the box body can be realized through the connection mechanism. The installation of the water inlet pipe, the bubble generator and the box body in the washing equipment is firmer and more reliable.

Drawings

Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

FIG. 1 is a schematic perspective view of an embodiment of the bubble generator of the present invention;

FIG. 2 is a front view of the embodiment of the bubble generator of the present invention shown in FIG. 1;

FIG. 3 is a cross-sectional view of an embodiment of the bubble generator of the present invention taken along section line A-A of FIG. 2;

FIG. 4 is a first perspective view of an embodiment of a cartridge of the bubble generator of the present invention;

FIG. 5 is a rear view of an embodiment of a cartridge of the bubble generator of the present invention;

FIG. 6 is a cross-sectional view of an embodiment of the cartridge body of the bubble generator of the present invention taken along section line B-B of FIG. 5;

FIG. 7 is a second perspective view of an embodiment of a cartridge of the bubble generator of the present invention;

FIG. 8 is a front view of an embodiment of a cartridge body of the bubble generator of the present invention;

FIG. 9 is a cross-sectional view of an embodiment of the cartridge body of the bubble generator of the present invention taken along section line C-C of FIG. 8;

FIG. 10 is a first perspective view of an embodiment of an insert of the bubble generator of the present invention;

FIG. 11 is a second perspective view of an embodiment of an insert of the bubble generator of the present invention;

FIG. 12 is a first perspective view of an embodiment of a platen of the bubble generator of the present invention;

FIG. 13 is a second perspective view of an embodiment of a platen of the bubble generator of the present invention;

FIG. 14 is a schematic structural view of an embodiment of the washing apparatus of the present invention;

FIG. 15 is a first perspective view of an embodiment of a linkage mechanism of the washing apparatus of the present invention;

FIG. 16 is a second perspective view of an embodiment of a linkage mechanism of the washing apparatus of the present invention;

list of reference numerals:

1. a pulsator washing machine; 11. a box body; 12. a tray seat; 13; an upper cover; 14. a ground margin; 10. a washing drum; 21. an outer tub; 31. an inner barrel; 311. a dewatering hole; 32. an impeller; 33. a drive shaft; 34. a motor; 35. a balance ring; 41. a drain valve; 42. a drain pipe; 5. a bubble generator; 51. a box body; 511. a water inlet part; 111. a water inlet end; 111a, connecting sleeve grooves; 112. a pressurizing channel; 113. a straight channel; 114. a pipeline reinforcing rib; 115. a water inlet pipe limiting strip; 512. a radial wall; 512a, a conical boss; 513. an orifice; 514. a water outlet part; 140. a lower limiting wall; 141. a circumferential outer wall; 141a, an upper wall; 141b, lower wall; 141c, left wall; 141d, right wall; 142. a circumferential inner wall; 142a, an inner upper wall; 142b, an inner left wall; 142c, an inner right wall; 142d, inner left lower wall; 142e, inner right lower wall; 143. a suction groove; 144. a reinforcing rib plate; 145. an air inlet; 146. a card compartment; 147. an auxiliary water outlet; 148. fixing a column; 149. buckling; 515. a microbubble water chamber; 516. an air intake passage; 517. a radial wall groove; 52. pressing a plate; 521. a plate-like body; 521a, an inner side surface; 521d, an outer side surface; 521b, the upper edge; 521c, lower edge; 522. pressing legs; 522a, a first press leg; 522b, a second press leg; 523. a circumferential gap; 524. a fixing hole; 525. a card guide edge; 526. a microbubble water outlet; 527. a platen guide edge; 53. a plug-in; 530. an annular groove; 531. a negative pressure chamber; 532. a mixing chamber; 532a, the inner wall of the mixing cavity; 532b, the tapered wall of the mixing chamber; 321. reinforcing ribs; 533. a sealing groove; 534. an insert seal ring; 535. an overflow port; 536. a transition hole; 537. a straight barrel mixing chamber; 371. a protrusion; 538. a mesh groove; 539a, a first end; 391. an annular table; 392. a notch; 539b, second end; 54. a micro-bubble bubbling net; 61. a water inlet valve; 62. a water inlet pipe; 17. a connecting mechanism; 71. connecting sleeves; 711. a connection bump; 712. a jaw slot; 72. a card holder; 721. a claw; 722. a ring plate; 73. a fixing member; 731. an arc-shaped bulge; 732. an arc-shaped groove; 18. the inlet tube sealing washer.

Detailed Description

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 for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In order to solve the technical problem that the micro-bubble generation rate of the existing water injection box is not high, the invention provides a bubble generator 5. The bubble generator 5 includes: a box body 51 which comprises a water inlet part 511, a water outlet part 514 and an orifice 513 positioned between the water inlet part 511 and the water outlet part 514, wherein the water inlet part 511 is provided with a water inlet end 111, and the water outlet part 514 is provided with an insert chamber 146; an insert 53 configured to be received within the insert chamber 146, a negative pressure chamber 531 and a mixing chamber 532 located downstream of the negative pressure chamber 531 being provided within the insert 53, a first end 539a of the insert 53 being positioned adjacent to the orifice 513 and having an annular ledge 391 formed on the first end 539a that surrounds the negative pressure chamber 531 and extends outwardly in a centerline direction by a predetermined height, at least one notch 392 being formed on the annular ledge 391, the annular ledge 391 abutting against a radial wall 512 of the insert chamber 146 to form an air inlet passage 516 in air communication with an exterior of the water outlet portion 514 between the first end 539a and the insert chamber 146, the air inlet passage 516 being in communication with the negative pressure chamber 531 through the at least one notch 392 such that a negative pressure created within the negative pressure chamber 531 by a flow of water throttled by the orifice 513 draws ambient air into the negative pressure chamber 531, the air and the water flow mixing with the flow of water forming bubble water within the mixing chamber 532; and a micro-bubble froth network 54 configured to cut bubble water into micro-bubble water.

References herein to "upstream" and "downstream" are made with respect to the direction of water flow C shown in the drawings of the specification unless specifically indicated to the contrary. The "upper wall", "lower wall", "left wall" and "right wall" mentioned herein are all for the case where the bubble generator of the present invention is placed horizontally and viewed from the side of the outlet portion. Unless expressly stated to the contrary, reference herein to "centerline" is to the centerline of the insert.

Fig. 1 is a schematic perspective view of an embodiment of a bubble generator of the present invention, fig. 2 is a front view of the embodiment of the bubble generator of the present invention shown in fig. 1, and fig. 3 is a sectional view of the embodiment of the bubble generator of the present invention taken along a section line a-a of fig. 2. As shown in fig. 1-3, in one or more embodiments, the bubble generator 5 includes a cartridge 51, an insert 53 received in the cartridge 51, a microbubble bubble screen 54, and a pressure plate 52 securing the microbubble bubble screen 54 to a second end 539b of the insert 53. Alternatively, the micro-bubble blister web 54 may be secured to the second end 539b of the insert 53 by other suitable means, such as a compression ring or the like.

As shown in fig. 3, the box body 51 includes a water inlet portion 511, a water outlet portion 514, and an orifice 513 between the water inlet portion 511 and the water outlet portion 514. The water inlet portion 511 is integral with the water outlet portion 514 and shares a radial wall 512. In one or more embodiments, an annular radial wall groove 517 having a second predetermined depth extends upstream from the radial wall 512 in the water flow direction C. In one or more embodiments, radial wall groove 517 is substantially V-shaped in cross-section. Alternatively, the cross-section of the radial wall groove 517 may take other suitable shapes, such as a U-shaped cross-section. In one or more embodiments, the orifice 513 is formed in a central location of the radial wall 512. Preferably, a tapered boss 512a, which surrounds the orifice 513 and slightly protrudes downstream, is formed on the radial wall 512, and the outer diameter of the tapered boss gradually decreases in the water flow direction C. Alternatively, the orifice 513 may be formed in the water inlet portion 511.

In one or more embodiments, the water inlet 511 is substantially cylindrical. As shown in fig. 3, the water inlet part 511 has a water inlet end 111, and the water inlet part 511 is connectable to an external water source, such as tap water, through the water inlet end 111. Alternatively, the water inlet 511 may take other suitable shapes, such as a water inlet with an oval cross-section. In one or more embodiments, a straight passage 113 and a pressurizing passage 112 are formed in the water inlet portion 511, respectively. By "straight channel" is meant a channel whose diameter remains constant along its extended length. As shown in fig. 3, the straight passage 113 extends from the water inlet end 111 to the pressurizing passage 112, and the pressurizing passage 112 extends from the straight passage 113 to the orifice 513 in the water flow direction C. The diameter of the straight channel 113 remains constant along its extended length. The diameter of the pressurizing passage 112 is gradually reduced along the water flow direction C to form a tapered passage. The tapered passageway pressurizes the water flowing through it, which is then rapidly expanded downstream through orifice 513 and creates a large negative pressure. Alternatively, a straight passage is omitted in the water inlet portion 511, so that the pressurizing passage 112 may extend from the water inlet end 111 up to the orifice 513.

FIG. 4 is a first perspective view of an embodiment of a cartridge of the bubble generator of the present invention; FIG. 5 is a rear view of an embodiment of a cartridge of the bubble generator of the present invention; fig. 6 is a sectional view of an embodiment of the cartridge body of the bubble generator of the present invention, taken along section line B-B of fig. 5. As shown in fig. 4-6, in one or more embodiments, an annular coupling sleeve groove 111a is provided on the outer circumference of the water inlet end 111, and the diameter of the inner wall of the water inlet end 111 is larger than the diameter of the straight passage 113. As shown in fig. 4-6, in one or more embodiments, four pipe reinforcing ribs 114 are provided on the inner walls of the straight passage 113 and the pressurizing passage 112, and the pipe reinforcing ribs 114 are uniformly distributed in the circumferential direction, for example, in the vertical direction and the horizontal direction, respectively. Alternatively, more or less than four pipe reinforcing ribs 114 may be provided on the inner walls of the straight passage 113 and the pressurizing passage 112, for example, three or six pipe reinforcing ribs 114 may be provided at even intervals in the circumferential direction. In one or more embodiments, as shown in fig. 4-6, two inlet tube stops 115 extend from each of the two tube stiffeners 114 in a generally horizontal position toward the center of the inlet 511. Alternatively, the inlet pipe stopper 115 may be provided on two pipe reinforcing ribs 114 located in the vertical direction.

As shown in fig. 1 to 3, the water outlet portion 514 includes an insert chamber 146, an air suction groove 143 extending along the outer periphery of the insert chamber 146 and forming air communication therewith, and a water outlet 147 located downstream of the insert chamber 146. Upstream of the insert chamber 146, it communicates directly with a throttle 513. The insert chamber 146 is substantially circular in cross-section perpendicular to the water flow direction C. In one or more embodiments, along the water flow direction C, the outlet portion 514 is a generally hollow box-like structure having an upstream end, a downstream end, and four sides between the upstream and downstream ends. The upstream end is connected to the water inlet portion 511, and the downstream end is an open opening. The insert chamber 146 extends between an upstream end and a downstream end. As shown in fig. 1 and 2, an upper wall 141a, a lower wall 141b, a left wall 141c, and a right wall 141d are formed on four side surfaces of the spout 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 circumferentially surrounds the entire insert chamber 146. As shown in fig. 3, in one or more embodiments, a portion of the lower wall 141b near the downstream end of the water outlet portion 514 is gradually enlarged downward (with respect to the orientation shown in fig. 3) in the radial direction, and a space enclosed by the enlarged portion forms the auxiliary water outlet 147. Alternatively, other forms of auxiliary water outlets may be formed on the downstream open end of the water outlet portion 514.

As shown in fig. 1 and 2, in one or more embodiments, a circumferential inner wall 142 is also formed between the circumferential outer wall 141 and the insert 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 the suction groove 143. The air suction groove 143 is completely open toward the downstream end of the water discharge portion 514, thereby allowing the external air to freely enter the air suction groove 143 by a sufficient amount. Accordingly, an air inlet 145 is provided through the circumferential inner wall 142 at a portion of the circumferential inner wall 142 at the upstream end of the water outlet portion 514, so that air communication can be established between the insert chamber 146 and the air suction groove 143. The air inlet 145 may be an appropriately sized slot, and may be one or more circular or rectangular holes, such as two circular or rectangular holes. The air inlet passage 516 is in air communication with the air suction groove 143 through the air inlet 145, and thus may be in air communication with the outside of the water outlet portion 514. Alternatively, the air inlet passage 516 may be in air communication with the exterior of the water outlet portion 514 via other types of air passages provided on the water outlet portion. As shown in fig. 1 and 2, 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, respectively, of the circumferential outer wall 141. Accordingly, the circumferential inner wall 142 includes an inner upper wall 142a which surrounds the card compartment 146 at a middle position and is parallel to the upper wall 141a at 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 141 d. Therefore, the suction groove 143 is a substantially U-shaped ring groove. Alternatively, the circumferential inner wall 142 extends only along the upper wall 141a, thus forming only a "one" shaped suction slot 143 between the upper wall 141a and the inner upper wall 142 a; alternatively, the circumferential inner wall 142 extends along the upper and left walls 141a and 141c, and thus an "L" -shaped suction groove 143 is formed between the upper and left walls 141a and 141c and the inner upper and left walls 142a and 142 b. Similarly, the circumferential inner wall 142 extends along the upper and right walls 141a and 141d, and thus an "L" -shaped suction groove 143 is formed between the upper and right walls 141a and 141d and the inner upper and right walls 142a and 142 c. The design of the suction slot 143 provides a very unobstructed air flow path for the bubble generator 5, and the bubble generator 5 can therefore suck in a large amount of ambient air from the outside.

FIG. 7 is a second perspective view of an embodiment of a cartridge of the bubble generator of the present invention; FIG. 8 is a front view of an embodiment of a cartridge body of the bubble generator of the present invention; fig. 9 is a sectional view of an embodiment of the cartridge body of the bubble generator of the present invention, taken along the section line C-C of fig. 8. In one or more embodiments, as shown in fig. 7-9, fixing posts 148 extending from the upstream end to the downstream end of the cassette to a predetermined height are provided on both sides of the card compartment 146. A longitudinal bore extending along the center line of each fixation post 148 is provided, for example, for receiving a screw or the like. The two retention posts 148 are spaced apart a distance that exceeds the maximum outer diameter of the insert chamber 146 to avoid interference with the insert chamber 146. Each fixing post 148 is a cylindrical body with a through hole, and parallel reinforcing ribs 144 are formed between the side wall of each fixing post 148 and the inner upper wall 142 a. Each reinforcing rib 144 is substantially L-shaped. The L-shape has a long side connected to the fixing post 148 and a short side connected to the inner upper wall 142 a. The downstream end portion of the L-shape forms a physical connection between the side wall of the fixing post 148 and the inner upper wall 142a, and the upstream end portion thereof leaves a gap between the side wall of the fixing post 148 and the inner upper wall 142 a. Alternatively, the reinforcing rib 144 may be U-shaped with both long sides connected to the fixing column 148 side wall and the inner upper wall 142, respectively, and a space formed between the both long sides is opened toward the upstream end. A catch 149 is formed on a portion of each reinforcing rib 144 at the upstream end with a predetermined gap from the case 51, and each catch 149 protrudes toward the plug-in chamber 146. The reinforcement ribs 144 provide a secure connection base for the snap arrangement. Based on the orientation shown in fig. 8, an arcuate lower limiting wall 140 extending from the upstream end to the downstream end is provided below the insert chamber 146. The lower retaining wall 140 provides more accommodation for the insert chamber 146 and provides more accessible surface area below the insert chamber 146. When the insert 53 is received, a larger contact area can be provided for the corresponding lower surface of the insert 53.

Fig. 10 is a first perspective view of an embodiment of an insert of the bubble generator of the present invention, and fig. 11 is a second perspective view of an embodiment of an insert of the bubble generator of the present invention. As shown in fig. 10 and 11, the insert 53 is a generally cylindrical structure that mates with the insert chamber 146. The insert 53 has a first end 539a and a second end 539 b. As shown in fig. 3, in a state where the insert 53 is fitted into the insert chamber 146, the first end 539a of the insert 53 is placed in the upstream end of the water outlet portion 514, thus being close to the orifice 513 and the air inlet 145. An annular ledge 391 extends outwardly from an end surface of the first end 539a in the direction of the centerline at the first end 539a of the insert 53 by a predetermined height. The annular land 391 has a radial width that is less than the end face width of the first end 539a such that, when the insert 53 is inserted into the insert pocket 146, the annular land 391 bears against the radial wall 512 to form an axial gap of substantially predetermined height between the first end 539a and the radial wall 512, which axial gap constitutes the air inlet passage 516 of the present invention. Two notches 392 are spaced apart on the annular land 391. Alternatively, one recess or more than two recesses can also be provided. The intake passage 516 communicates with the notch 392 and the intake port 145, respectively, and thus also with the intake slot 143. An annular groove 530 extends inwardly of first end 539a in the direction of the centerline from the end face of first end 539a first predetermined depth. Therefore, the annular groove 530 also communicates with the intake passage 516. A radial wall groove 517 formed in the radial wall 512 also communicates with the air passage 516. The annular groove 530 and the radial wall groove 517 enlarge the space for the air passage 516 to communicate air, so that the amount of air that can be drawn into the negative pressure chamber 531 is more sufficient. In one or more embodiments, as shown in fig. 3, an annular seal groove 533 is also provided on the circumferentially outer wall of the insert 53 proximate the first end 539 a. The seal groove 533 is configured to receive an insert seal ring 534 to form a fluid-tight seal between the insert 53 and the inner wall of the insert chamber 146.

As shown in FIGS. 3, 10, and 11, in one or more embodiments, a suction chamber 531, a transition bore 536, a mixing chamber 532, and a straight barrel mixing chamber 537 are formed within the insert 53 along the centerline of the insert 53 from the first end 539a to the second end 539 b. An annular land 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 orifice 513 and directly communicates with the orifice 513. The tapered boss 512a on the radial wall 512 extends into the upstream end of the negative pressure chamber 531 with a gap radially between the annular land 391. The negative pressure chamber 531 communicates with the intake passage 516 through the notch 392. In one or more embodiments, the diameter of negative pressure cavity 531 tapers along water flow direction C such that negative pressure cavity 531 forms a tapered cavity with a tapered diameter. Such a tapered diameter chamber may enhance the intake of air, allowing more ambient air to enter the negative pressure chamber 531. The mixing chamber 532 communicates with the negative pressure chamber 531 through a transition hole 536. The diameter of the transition hole 536 is about the same as the minimum diameter of the sub-pressure chamber 531. In one or more embodiments, the diameter of the mixing chamber 532 increases gradually along the water flow direction C such 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 bounded by a conical wall and a plurality of circumferentially spaced ribs 321 are provided on the outer periphery of the conical wall, each rib 321 extending generally radially outward or obliquely outward from the outer periphery of the conical wall and reaching a height flush with the outer peripheral wall of the insert 53. The reinforcing ribs 321 are arranged to ensure uniform wall thickness of the mixing part, so that the forming of the plug-in piece 53 is facilitated, meanwhile, the manufacturing material of the plug-in piece 53 is reduced, and the cost is saved. Downstream of this tapered chamber of increasing diameter, an additional mixing chamber with the largest diameter of the tapered chamber is also formed, called the straight-barrel mixing chamber 537, allowing for thorough mixing of the air and water streams. Projections 371 which engage with the catches 149 are provided on both sides on the outer periphery of the straight-tube mixing chamber 537 to ensure that the insert 53 can be stably and reliably mounted in the insert chamber 146. Alternatively, the straight mixing chamber 537 may be eliminated in the insert 53. As shown in fig. 11, a plurality of overflow ports 535 are provided at the second end 539b of the insert 53. These overflow openings 535 are distributed over the annular end surface of the second end 539b, for example in the middle and lower positions of the annular end surface, and are spaced apart from each other by a predetermined distance. The distances between adjacent overflow ports 535 may be the same or different according to actual needs. In the event of insufficient water pressure, the water flow may not quickly penetrate the micro-bubble froth network 54 and thus may accumulate in the mixing chamber. These overflow ports allow the water to flow out through them, so as to avoid the problem of the water flow accumulating in the mixing chamber and blocking the micro-bubble bubbling net 54 and causing the air to be unable to be sucked, thus ensuring the high reliability of the micro-bubble water continuously generated by the bubble generator 5.

As shown in fig. 3, the micro-bubble blister 54 is secured to the second end 539b of the insert 53 by a pressure plate 52. An annular step having a maximum diameter smaller than that of the second end 539b is formed on the end face of the second end 539b of the insert member 53. The annular step forms a mesh groove 538. The microbubble blister web 54 can be placed in the mesh slot 538 and against the mesh slot 538. In one or more embodiments, the micro-bubble blister web 54 comprises a multi-layer web structure, such as two, three, or more layers. Each layer of net structure has at least one net hole with diameter up to micron level. Preferably, the diameter of the mesh is 0-1000 microns; more preferably, the diameter of the mesh is between 5 and 500 microns. The screen may be a plastic fence, a metal mesh, a mesh of polymeric material, or other suitable mesh structure. The plastic fence is generally a polymer fence, which is formed by integrally injection molding a polymer material, or by first forming a sheet from a polymer material and then machining the sheet to form a microporous structure. The polymer material net is usually a net having a microporous structure formed by weaving a polymer material into filaments. The polymer material net may include nylon net, cotton net, polyester net, polypropylene net, etc. Alternatively, the mesh structure may be other mesh structures capable of generating micro bubbles, for example, a mesh structure composed of two non-micron-sized honeycomb structures. When the bubble water flows through the mesh structure, the mesh structure produces mixing and cutting effects on the bubble water, thereby producing a large amount of micro-bubble water.

FIG. 12 is a first perspective view of an embodiment of a platen of the bubble generator of the present invention, and FIG. 13 is a second perspective view of an embodiment of a platen of the bubble generator of the present invention. As shown in fig. 12 and 13, in one or more embodiments, the pressure plate 52 has a plate-shaped body 521 and pressure legs 522 extending outwardly from an inner side surface 521a of the plate-shaped body 521. In the assembled state of the bubble generator 5, the inner side surface 521a of the plate-like body 521 faces the micro bubble foaming net 54, and is therefore referred to as "inner side surface". Accordingly, the side of the plate-like body 521 facing away from the microbubble blister 54 is referred to as the outer side 521 d. A microbubble water outlet 526 is formed at a substantially central position of the plate-like body 521. The diameter of the microbubble water gap 526 substantially coincides with the end surface diameter of the second end 539b of the insert 53. The microbubble water that flows out of the microbubble bubbling network 54 is primarily ejected from the microbubble water outlet 526. The plate-like body 521 also has an upper edge 521b and a lower edge 521 c. In the assembled state of the bubble generator 5, the plate-like body 521 substantially covers the downstream end of the water outlet portion 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 adjacent to the lower wall 141b of the circumferential outer wall 141 and the auxiliary water outlet 147. Therefore, the plate-shaped body 521 can serve as a downstream end cap of the water outlet portion 514, and only the auxiliary water outlet 147 and the air suction groove 143 need to be exposed. Alternatively, the upper edge 521b and both side edges of the plate-shaped body 521 may be inwardly extended to form a platen guide edge 527, and the platen guide edge 527 performs positioning and guiding functions in the assembled state of the bubble generator 5. As shown in fig. 12 and 13, in one or more embodiments, the pressure plate 52 is secured to the outlet portion 514 of the cartridge body 51 by screws or bolts. Accordingly, two fixing holes 524 are formed on the plate-shaped body 521. The two fixing holes 524 are distributed on the left and right sides of the plate-shaped body 521, and the pressing plate 52 can be fixed on the fixing posts 148 of the water outlet portion 514 by screws or bolts extending through the fixing holes 524. Alternatively, the pressure plate 52 may be secured with the outlet portion 514 in other suitable manners, such as by a snap-fit arrangement.

In one or more embodiments, as shown in fig. 12 and 13, the press legs 522 include a plurality of press legs arranged in a loop corresponding to the end surface of the second end 539b of the insert 53 so that the pressure plate 52 may press the microbubble bubbler 54 against the mesh groove 538 on the second end 539b of the insert 53 via the press legs. By these legs, a microbubble water chamber 515 capable of receiving microbubble water is formed between the plate-like body 521 and the microbubble foaming net 54. Circumferential gaps 523 are formed between adjacent pressure legs to allow micro bubble water to flow from the micro bubble water chamber 515 to the auxiliary water outlet 147 via the circumferential gaps 523. As shown in fig. 12, in one or more embodiments, the plurality of press legs 522 includes a first press leg 522a and a plurality of second press legs 522 b. The width of the first press leg 522a is larger than each of the second press legs 522b in the circumferential direction. The first presser leg 522a having a relatively large width can perform positioning and alignment functions at the time of assembling the bubble generator 5. Alternatively, the press leg 522 may be formed into a cylindrical structure that can be end-fitted to the second end 539b of the insert 53, and a large opening that can be aligned with the auxiliary water outlet 147 is provided in a side wall of the cylindrical structure to allow the micro bubble water to flow from the micro bubble water chamber 515 into the auxiliary water outlet 147. An insert guide edge 525 that wraps around the periphery of the insert 53 extends from the inner side 521a of the plate-like body 521 around the periphery of the press leg 522. In the assembled state of the bubble generator 5, the insert guiding edge 525 serves as a guide and at the same time makes the mounting of the insert in the insert compartment more secure.

When the bubble generator 5 is operated, water from an external water source enters the water inlet portion 511 from the water inlet end 111, and the water flow expands and is injected into the negative pressure chamber 531 through the orifice 513 after being pressurized through the pressurizing passage 112 in the water flow direction C and generates a negative pressure in the negative pressure chamber. Under the negative pressure, a large amount of outside air is sucked from the suction groove 143 into the negative pressure chamber 531 through the notches 392 via the air inlet 145 and the air inlet passage 516. The air then flows into the mixing chamber 532 with the water stream and is more thoroughly 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 amount of microbubbles. The microbubble water is ejected from the microbubble water chamber 515 through the microbubble water outlet 526 on the platen 52. Water overflowing the overflow ports 535 and/or micro-bubble water flowing out of the circumferential gap 523 between the pressure legs 522 may flow out through the auxiliary water outlets 147.

The present invention also provides a washing apparatus comprising the bubble generator 5 of the present invention. The bubble generator 5 is arranged within the scrubbing apparatus to provide micro-bubble water. By the bubble generator, the washing capacity of the washing equipment can be improved, the using amount of the washing treatment agent can be reduced, the residual amount of the washing treatment agent in clothes can be reduced, and therefore, the bubble generator is not only beneficial to the health of a user, but also can improve the experience of the user.

FIG. 14 is a schematic structural view of an embodiment of the washing apparatus of the present invention. In this embodiment, the washing apparatus is a pulsator washing machine 1. Alternatively, in other embodiments, the washing apparatus may be a drum washing machine or a dryer, etc.

As shown in fig. 14, the pulsator washing machine 1 (hereinafter, referred to as a washing machine) includes a cabinet 11. Feet 14 are provided at the bottom of the case 11. The upper part of the box body 11 is provided with a tray 12, and the tray 12 is pivotally connected with an upper cover 13. A washing tub 10 is provided in the cabinet 11, and the washing tub 10 includes an outer tub 21 as a tub. An inner barrel 31 is arranged in the outer barrel 21, the bottom of the inner barrel 31 is provided with a wave wheel 32, the lower part of the outer barrel 21 is fixed with a motor 34, the motor 34 is in driving connection with the wave wheel 32 through a transmission shaft 33, and the side wall of the inner barrel 31 is provided with a dewatering hole 311. The drain valve 41 is provided on the drain pipe 42, and an upstream end of the drain pipe 42 communicates with the bottom of the outer tub 21. The washing machine further includes a water inlet valve 61, a water inlet pipe 62 having one end connected to the water inlet valve 61, a bubble generator 5 connected to the other end of the water inlet pipe 62, and a connection mechanism 17 connecting the water inlet pipe 62 and the bubble generator 5. The bubble generator 5 is mounted on the tray 12. The bubble generator 5 may be any of the bubble generators described above.

FIG. 15 is a first perspective view of an embodiment of a linkage mechanism of the washing apparatus of the present invention; fig. 16 is a second perspective view of an embodiment of a coupling mechanism of a washing apparatus of the present invention. As shown in fig. 15 and 16, in one or more embodiments, the coupling mechanism 17 includes a coupling sleeve 71, a clamp 72, and a fastener 73. The coupling sleeve 71 has a substantially cylindrical sleeve structure, and a coupling protrusion 711 is formed on an inner wall of one end of the coupling sleeve 71 to protrude inward, and a jaw groove 712 is formed on an inner wall of the other end of the coupling sleeve. The holder 72 includes a circular disc 722 and a plurality of jaws 721 extending outward from an inner side surface of the circular disc 722 (toward the connection sleeve 71) in a direction perpendicular to the circular disc 722. A plurality of claws 721 are distributed in the circumferential direction, for example, 4 claws 721 are provided. The cassette 72 is connected to the jaw slot 712 of the coupling sleeve 71 by the jaw 721. In the assembled state of the coupling mechanism 17, an axial space for mounting the fastener 73 is left between the annular disc 722 of the clamping seat 72 and the end face of the connecting sleeve 71. The fixing member 73 has a generally crescent shape and is adapted to be clamped around the outer periphery of the claw 721, and two ends thereof respectively abut against the end surface of the circular disc 722 and the end surface of the connecting sleeve 71. Alternatively, the fixing member 73 may be provided in an open ring structure. An arc-shaped protrusion 731 extends outward along the periphery of the fixing member 73 and along the center line of the fixing member 73 at a substantially middle position of the fixing member 73. An arc groove 732 which can be matched and connected with the box body 11 is arranged at the top of the arc protrusion 731. In the assembled state of the connecting mechanism 17, the arc-shaped projection 731 is located at a position above the circular disc 722. Alternatively, the arc-shaped projection 731 may be eliminated.

In one or more embodiments, as shown in FIG. 3, the coupling mechanism 17 is coupled to the inlet tube 62 by the engagement member 72 that fits over the outside of the inlet tube 62 and is coupled to the coupling groove 111a on the inlet end 111 by the coupling protrusion 711. The water inlet pipe 62 penetrates through the water inlet end 111 and extends into the straight channel 113, two water inlet pipe sealing rings 18 are sleeved outside the water inlet pipe 62, and the water inlet pipe sealing rings 18 are clamped at the junction of the water inlet end 111 and the straight channel 113 because the aperture of the water inlet end 111 (which is slightly smaller than the outer diameter of the water inlet sealing rings 18) is larger than the aperture of the straight channel 113 (which is slightly larger than the outer diameter of the water inlet pipe). Thus, 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 inlet pipe sealing rings 18 are provided outside the inlet pipe 62. The water inlet pipe 62 can be better positioned at the center of the channel by four pipe reinforcing ribs 114 arranged on the inner walls of the straight channel 113 and the pressurizing channel 112, and the water inlet pipe 62 is prevented from deviating to one side to influence the water inlet effect. The position of the end of the inlet pipe 62 that can extend into the straight channel 113 can be limited by the inlet pipe stop strip 115, so as to prevent the damage of the pressurizing channel 112 caused by the fact that the inlet pipe extends too deep due to misoperation during installation.

As shown in FIG. 14, in one or more embodiments, water from a source (e.g., tap water or recycled water) enters the bubble generator 5 via a water inlet valve 61 and a water inlet pipe 62, and micro-bubble water is generated by the bubble generator 5. The generated micro-bubble water is mainly ejected from the micro-bubble water outlet on the pressure plate 52 to the inner flanging of the tray seat 12, and the inner flanging can play a role of water retaining, so that the micro-bubble water is redirected to flow into the inner barrel 31 and/or the outer barrel 21 for washing clothes and the like. The water from the overflow opening 535 of the insert 53 and the water splashed between the press legs 522 flow out of the auxiliary water outlet 147 and then also enter the inner tub 31 and/or the outer tub 21. The micro-bubbles in the water impact the washing treatment agent in the crushing process, and the micro-bubbles can adsorb the washing treatment agent through the carried negative charges, so that the micro-bubbles can increase the mixing degree of the washing treatment agent and the water, thereby reducing the using amount of the washing treatment agent and reducing the residual amount of the washing treatment agent on the clothes. In addition, the micro bubbles may also hit dirt on the laundry in the inner tub 31 and may adsorb foreign substances that generate the dirt. Therefore, the micro bubbles enhance the detergency performance of the washing machine.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the invention, a person skilled in the art may combine technical features from different embodiments, and may make equivalent changes or substitutions for related technical features, and such changes or substitutions will fall within the scope of the invention.

Claims (10)

1. A bubble generator, characterized in that it comprises:

the box body comprises a water inlet part, a water outlet part and a throttling hole positioned between the water inlet part and the water outlet part, wherein the water inlet part is provided with a water inlet end, and the water outlet part is provided with a plug-in room;

an insert configured to be received within the insert chamber, a negative pressure cavity and a mixing cavity downstream of the negative pressure cavity being disposed within the insert, a first end of the insert is positioned close to the orifice and is formed with an annular land on the first end that surrounds the negative pressure chamber and extends outward in a centerline direction by a predetermined height, at least one notch is formed on the annular table, the annular table abuts against the radial wall of the insert chamber to form an air inlet channel between the first end and the insert chamber, the air inlet channel is communicated with the outside of the water outlet part, the air inlet channel is communicated with the negative pressure cavity through the at least one notch, so that external air can be sucked into the negative pressure cavity by negative pressure generated in the negative pressure cavity by water flow throttled by the throttle hole, and the air and the water flow are mixed in the mixing cavity to form bubble water; and

a micro-bubble bubbling net securable to the second end of the insert and configured to cut the bubble water into micro-bubble water.

2. The bubble generator of claim 1, wherein the at least one notch comprises two notches spaced apart from each other.

3. The bubble generator according to claim 1 or 2, wherein an annular groove surrounding the annular land is further formed on the first end of the insert, the annular groove extending from an end surface of the first end by a first predetermined depth in the first end in the center line direction, and the annular groove communicating with the air intake passage.

4. The bubble generator according to claim 3, wherein a radial wall groove having a second predetermined depth is formed on a radial wall of the insert chamber, the radial wall groove being opposite to the annular groove and communicating with the intake passage.

5. The bubble generator of claim 1, further comprising a pressure plate comprising a plate-like body and pressure legs extending outwardly from an inner side of the plate-like body, the pressure plate pressing the micro-bubble rising web against the second end of the insert via the pressure legs such that a micro-bubble water chamber is formed between the micro-bubble rising web and the plate-like body for receiving the micro-bubble water, the plate-like body having a micro-bubble water outlet provided thereon.

6. The bubble generator of claim 5, wherein said press legs comprise a plurality of press legs arranged in a ring shape matching the second end of the insert and forming a circumferential gap between adjacent said press legs, the micro bubble water further being flowable from the micro bubble water chamber via said circumferential gap.

7. The bubble generator according to claim 5, wherein the water outlet portion includes a circumferential outer wall and a circumferential inner wall surrounding the insert chamber, the circumferential outer wall being composed of an upper wall, a lower wall, a left wall and a right wall, the circumferential inner wall extending in parallel along at least a part of the upper wall, the left wall and the right wall, an air intake groove communicating with outside air being formed between the circumferential outer wall and the circumferential inner wall, and the air intake groove being in air communication with the air intake passage via an air intake port formed on the circumferential inner wall.

8. The bubble generator according to claim 7, wherein a portion of said lower wall proximate to said second end of said insert is radially outwardly enlarged so as to form an auxiliary water outlet downstream of said insert chamber.

9. A washing apparatus, characterized in that the washing apparatus comprises:

a box body;

a washing drum disposed within the cabinet;

a water inlet pipe installed on the case and configured to be connectable to an external water source; and

the bubble generator according to any one of claims 1 to 8, which forms a connection with the water inlet pipe through a connection mechanism and supplies micro-bubble water to the washing drum.

10. The washing apparatus as recited in claim 9 wherein said connection mechanism comprises:

a connection sleeve configured to be connectable with the water inlet end;

a clamping base configured to be fitted over the water inlet pipe, the clamping base being provided with a connecting groove surrounding an outer peripheral wall of the clamping base and a plurality of jaws formed on one end of the clamping base and evenly spaced in a circumferential direction of the clamping base, the jaws being configured to be caught on the connecting sleeve; and

a fixing member configured to be coupled with the case and to be caught in the coupling groove.

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