Micro-bubble water box and washing equipment having the same

Abstract

The present invention relates to a microbubble water cartridge and a washing device having the same. The microbubble water cartridge includes: a cartridge body, which is provided with a throttle hole and a mixing chamber located downstream of the throttle hole, and a water inlet communicating with the throttle hole and an air passage capable of forming an air communication with the mixing chamber are provided on the cartridge body, so that the negative pressure caused by the water flow passing through the throttle hole in the mixing chamber can suck external air into the mixing chamber through the air passage; a microbubble foaming net, which is configured to cut the bubble water from the mixing chamber into microbubble water; and a pressing plate, which includes a plate-shaped body and pressing legs extending outward from the plate-shaped body, and the pressing plate presses the microbubble foaming net against the downstream end of the mixing chamber through the pressing legs and is configured to allow the microbubble water to be ejected from the cartridge body. The microbubble water cartridge significantly increases the microbubble content in the microbubble water. Therefore, the washing device having the same has a stronger washing ability and can reduce the residue amount of the detergent on, for example, clothes.

Description

Technical Field

[0001] The present invention relates to a washing device, and more particularly to a microbubble water box and a washing device having the same. Background Art

[0002] Micro-bubbles generally refer to tiny bubbles with a diameter of less than fifty micrometers (μm) when they are generated. Micro-bubbles can also be referred to as micro- / nano-bubbles, micro-bubbles or nano-bubbles according to their diameter range. Since micro-bubbles have a small buoyancy in a liquid, they stay in the liquid for a relatively long time. Moreover, micro-bubbles will shrink in the liquid until they finally break, generating smaller nano-bubbles. In this process, the bubbles become smaller, so their rising speed becomes slow, resulting in high melting efficiency. When micro-bubbles break, high pressure and high-temperature heat are generated locally, which can destroy foreign substances such as organic matter floating in the liquid or attached to an object. In addition, the shrinking process of micro-bubbles is accompanied by an increase in negative charge. The peak state of negative charge is usually when the diameter of micro-bubbles is between 1 and 30 micrometers, so it is easy to adsorb positively charged foreign substances floating in the liquid. As a result, the foreign substances will be adsorbed by micro-bubbles after being destroyed due to the breakage of micro-bubbles, and then slowly float to the liquid surface. These characteristics enable micro-bubbles to have strong cleaning and purification capabilities. At present, micro-bubbles have been widely used in washing devices such as washing machines.

[0003] For example, Chinese Patent Invention CN108396516B discloses a pulsator washing machine, which has a water injection device provided in a disk base. The water injection device has a connection port connected to a water supply source, a water injection box, and a fine bubble generator arranged between the connection port and the water injection box. Specifically, the fine bubble generator disclosed in CN108396516B has a cylindrical nozzle, in which a tapered channel portion with a decreasing diameter, a protruding portion (forming a throttle hole), and a mixing chamber (with a diameter larger than the diameter of the throttle hole and remaining unchanged) 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 when flowing through such a fine bubble generator, so that the 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 laundry tub and is used for washing clothes. However, this kind of fine bubble generator can only generate fine bubbles by relying on the very limited air carried inside the liquid flowing through it. Therefore, this kind of fine bubble generator cannot provide micro-bubble water containing enough micro-bubbles, resulting in a still large room for improvement in the washing effect, and the remaining detergent may pose a potential hazard to the health of users.

[0004] Accordingly, there is a need in the art for a new technical solution to solve the above problems. Summary of the Invention

[0005] In order to solve the above problems in the prior art, that is, to solve the technical problem of the low microbubble generation efficiency of the existing water injection device, the present invention provides a microbubble water box, which includes: a box body, which is provided with a throttle hole and a mixing chamber located downstream of the throttle hole, and an inlet for communicating with the throttle hole and an air passage that can form an air connection with the mixing chamber are provided on the box body, so that the negative pressure caused by the water flow passing through the throttle hole in the mixing chamber can suck the outside air into the mixing chamber through the air passage; a microbubble foaming net, which is configured to cut the bubble water from the mixing chamber into microbubble water; and a pressing plate, which includes a plate-shaped body and pressing legs extending outward from the plate-shaped body, and the pressing plate presses the microbubble foaming net against the downstream end of the mixing chamber through the pressing legs and is configured to allow the microbubble water to spray out from the box body.

[0006] In a preferred technical solution of the above microbubble water box, the mixing chamber is surrounded by an annular wall, and a suction groove is provided on the box body around the annular wall, and at least one suction port communicating the suction groove and the mixing chamber is formed on the annular wall, and the air passage is composed of the suction groove and the at least one suction port.

[0007] In a preferred technical solution of the above microbubble water box, a microbubble water outlet is formed between the pressing plate and the side wall of the box body.

[0008] In a preferred technical solution of the above microbubble water box, a microbubble water outlet is formed on the plate-shaped body, and an auxiliary water outlet is formed between the pressing plate and the side wall of the box body.

[0009] In a preferred technical solution of the above microbubble water box, the pressing legs include a plurality of pressing legs, and the plurality of pressing legs are arranged in an annular shape matching the downstream end of the mixing chamber and a circumferential gap is formed between adjacent pressing legs.

[0010] In a preferred technical solution of the above microbubble water box, a pressurizing chamber is provided in the box body upstream of the throttle hole, and along the direction of the water flow, the inner diameter of the pressurizing chamber gradually decreases.

[0011] In a preferred technical solution of the above microbubble water box, turbulence ribs are provided on the inner wall of the pressurizing chamber.

[0012] In a preferred technical solution of the above microbubble water box, a plurality of overflow ports are provided on the downstream end of the mixing chamber.

[0013] In a preferred technical solution of the above microbubble water box, the microbubble foaming net includes a multi-layer net structure, and the diameter of at least one set of mesh holes in each layer of the net structure reaches the micron level.

[0014] Those skilled in the art can understand that in the technical solution of the microbubble water cartridge of the present invention, the microbubble water cartridge includes a cartridge body, a microbubble foaming net, and a pressing plate. The cartridge body is provided with a throttle hole and a mixing chamber downstream of the throttle hole, and a water inlet communicating with the throttle hole and an air passage that can form an air communication with the mixing chamber are provided on the cartridge body. After the water flow enters the cartridge body from the water inlet, it is throttled and expanded through the throttle hole and then sprayed into the mixing chamber, creating a negative pressure in the mixing chamber. Therefore, a negative pressure area close to the throttle hole is formed in the mixing chamber. With the action of the negative pressure, the outside air can be sucked into the mixing chamber through the air passage, and the mixing chamber provides a sufficiently large mixing space for the water flow to be fully mixed with the sucked air to generate bubble water. The pressing plate firmly fixes the microbubble foaming net on the downstream end of the mixing chamber through the pressing legs. The bubble water flows from the mixing chamber to the microbubble foaming net, and after being cut and further mixed by the microbubble foaming net, microbubble water containing rich microbubbles is formed. The microbubble water then sprays out of the cartridge body. Therefore, the microbubble water cartridge of the present invention significantly increases the microbubble content in the microbubble water. Along the water flow direction, the pressing plate is arranged on the downstream side or the downstream end of the cartridge body. Therefore, the plate-shaped body of the pressing plate can act as the downstream side side wall of the cartridge body (or can be called an "end cover"), and the pressing plate is configured to allow the microbubble water to spray out of the cartridge body.

[0015] Preferably, the mixing chamber is surrounded by an annular wall, and a suction groove is provided on the cartridge body around the annular wall. At least one suction port communicating the suction groove and the mixing chamber is formed on the annular wall, and the air passage is composed of the suction groove and at least one suction port. This design provides a sufficiently large suction groove, thus ensuring that a sufficient amount of air can be smoothly sucked into the mixing chamber.

[0016] Preferably, a microbubble water outlet is formed between the pressing plate and the side wall of the cartridge body, or a microbubble water outlet is designed on the plate-shaped body, and an auxiliary water outlet is formed between the pressing plate and the side wall of the cartridge body. Different configurations of the microbubble water outlet can guide the microbubble water to spray in different directions to meet specific requirements.

[0017] Preferably, the pressing legs include a plurality of pressing legs, and the plurality of pressing legs are arranged in an annular shape matching the downstream end of the mixing chamber, and a circumferential gap is formed between adjacent pressing legs. This circumferential gap allows the microbubble water to flow through it.

[0018] Preferably, along the water flow direction, the inner diameter of the pressurizing chamber gradually decreases, forming a tapered cavity with a gradually decreasing diameter. Such a pressurizing chamber can gradually increase the pressure of the water flow. When the pressurized water flow expands and sprays out from the throttle hole, the negative pressure effect caused in the mixing chamber is better, so that more air can be sucked in and the mixing degree of air and water can be increased.

[0019] Preferably, the turbulence ribs provided on the inner wall of the pressurizing chamber can help the water flow mix the inhaled air more effectively downstream by increasing the turbulence of the water, thereby generating more bubbles in the water.

[0020] Preferably, a plurality of overflow ports are provided at the downstream end of the mixing chamber. When the water pressure in the microbubble water box is insufficient and thus the water flow cannot quickly penetrate through the microbubble foaming net, the water flow can flow out from these overflow ports, avoiding the problems of blocking the microbubble foaming net and being unable to inhale air due to the accumulation of water flow in the mixing chamber, thereby ensuring the high reliability of continuously generating microbubble water in the microbubble water box.

[0021] Preferably, the microbubble foaming net is a multi-layer net structure, and by cooperating with the micron-sized pores on each layer of the net structure, it can significantly reduce the diameter of the microbubbles and increase the mixing degree of the microbubbles and water.

[0022] To solve the above problems in the prior art, that is, to solve the technical problems that the washing effect of the existing washing equipment is not good and the residual detergent may pose a potential hazard to the health of users, the present invention also provides a washing equipment, which includes any one of the above-mentioned microbubble water boxes, and the microbubble water box is arranged in the washing equipment to provide microbubble water for the washing equipment. By spraying the microbubble water into the washing equipment, it can help improve the washing ability of the washing equipment, and at the same time can save the amount of washing treatment agent used, so it is also beneficial to the health of users. Description of the Drawings

[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, in which:

[0024] Figure 1 is a perspective schematic view of an embodiment of the microbubble water box of the present invention;

[0025] Figure 2 is Figure 1 a front view of the embodiment of the microbubble water box of the present invention shown;

[0026] Figure 3 is a sectional view of the embodiment of the microbubble water box of the present invention taken along the section line A-A of Figure 2 ;

[0027] Figure 4 is a first perspective schematic view of an embodiment of the box body of the microbubble water box of the present invention;

[0028] Figure 5 is a second perspective schematic view of an embodiment of the box body of the microbubble water box of the present invention;

[0029] Figure 6 is a perspective schematic view of an embodiment of the pressing plate of the microbubble water box of the present invention;

[0030] Figure 7 It is a schematic structural diagram of an embodiment of the washing device of the present invention.

[0031] List of reference numerals:

[0032] 1, pulsator washing machine; 11, cabinet; 12, disk base; 13, upper cover; 14, foot; 21, outer tub; 31, inner tub; 311, dehydration holes; 32, pulsator; 33, transmission shaft; 34, motor; 35, balance ring; 41, drain valve; 42, drain pipe; 5, microbubble water box; 51, box body; 511, water inlet; 111, water inlet channel; 512, pressurizing chamber; 121, turbulence ribs; 122, tapered part; 513, throttle hole; 514, water outlet side; 140, lower expanding wall part; 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; 143, suction groove; 144, rib wall; 145, suction port; 145a, first suction port; 145b, second suction port; 146, mixing chamber; 461, overflow port; 462, annular wall; 463, downstream end; 147, microbubble water outlet; 148, reinforcing rib; 149, mesh groove; 515, microbubble water chamber; 516, fixing hole of the box body; 517, fixing hole column; 52, pressing plate; 521, plate-shaped body; 521a, inner side surface; 521b, upper edge; 521c, lower edge; 522, pressing leg; 522a, first pressing leg; 522b, second pressing leg; 523, circumferential gap; 524, fixing hole of the pressing plate; 525, sleeve; 53, microbubble foaming net; 61, water inlet valve; 62, water inlet pipe. Detailed implementation manners

[0033] The preferred implementation manners of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention.

[0034] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does 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 a limitation to 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.

[0035] 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 directly connected, indirectly connected through an intermediate medium, or the communication inside 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.

[0036] To solve the technical problem that the microbubble generation rate of the existing water injection box is not high, the present invention provides a microbubble water box 5. The microbubble water box 5 includes: a box body 51, which is provided with a throttle hole 513 and a mixing chamber 146 located downstream of the throttle hole 513, and an inlet 511 communicating with the throttle hole 513 and an air passage that can form an air communication with the mixing chamber 146 are provided on the box body 51, so that the negative pressure caused by the water flow passing through the throttle hole 513 in the mixing chamber 146 can suck the outside air into the mixing chamber 146 through the air passage; a microbubble foaming net 53, which is configured to cut the bubble water from the mixing chamber 146 into microbubble water; and a pressing plate 52, which includes a plate-shaped body 521 and pressing legs 522 extending outward from the plate-shaped body 521. The pressing plate 52 presses the microbubble foaming net 53 against the downstream end 463 of the mixing chamber 146 through the pressing legs 522 and is configured to allow the microbubble water to spray out from the box body 51.

[0037] As used herein, "upstream" and "downstream" are relative to the water flow direction C shown in the accompanying drawings of the specification, unless otherwise clearly stated to the contrary. As used herein, "upper wall", "lower wall", "left wall" and "right wall" are all relative to Figure 1 and Figure 2 the orientation shown.

[0038] Figure 1 is a three-dimensional schematic diagram of an embodiment of the microbubble water box of the present invention, Figure 2 is Figure 1 the front view of the embodiment of the microbubble water box of the present invention shown, while Figure 3 is a sectional view of the embodiment of the microbubble water box of the present invention taken along the section line A-A of Figure 2 . As shown in Figures 1 - 3 , the microbubble water box 5 includes a box body 51, a microbubble foaming net 53, and a pressing plate 52 for fixing the microbubble foaming net 53.

[0039] Figure 4 is the first three-dimensional schematic diagram of the embodiment of the box body of the microbubble water box of the present invention, and Figure 5 is the second three-dimensional schematic diagram of the embodiment of the box body of the microbubble water box of the present invention. As shown in Figures 1 - 5As shown, in one or more embodiments, the main body of the cartridge 51 is a generally rectangular parallelepiped cartridge. An inlet 511 is formed on one side of the rectangular parallelepiped cartridge, and a throttle hole 513 and a mixing chamber 146 located downstream of the throttle hole 513 are formed within the cartridge 51. Alternatively, the cartridge 51 may also adopt other suitable shapes, such as a generally cube or other polyhedrons, etc.

[0040] As Figure 3 and Figure 5 shown, in one or more embodiments, the inlet 511 is generally cylindrical. Along the water flow direction C, an inlet passage 111 with a constant diameter is formed within the inlet 511. The cartridge 51 can be connected to an external water source, such as tap water, through the inlet 511, so as to allow water to flow into the cartridge 51 from the inlet passage 111 along the water flow direction C. Therefore, the side of the cartridge 51 where the inlet 511 is located also forms the upstream side of the cartridge 51. Alternatively, the inlet 511 may also adopt other suitable shapes, such as an inlet with an elliptical cross-section. In one or more embodiments, a pressurizing chamber 512 is provided within the cartridge 51. The pressurizing chamber 512 extends downstream from the inlet passage 111 all the way to the throttle hole 513. Along the water flow direction C, the inner diameter of the pressurizing chamber 512 gradually decreases, forming a conical cavity. The water flow is continuously pressurized when flowing through the pressurizing chamber 512, so that when the pressurized water flow sprays into the downstream mixing chamber 146 from the throttle hole 513, a greater negative pressure is caused within the mixing chamber 146, and the mixing of the water flow and air can be further enhanced. In one or more embodiments, the pressurizing chamber 512 is a primary pressurizing chamber. Alternatively, the pressurizing chamber 512 may be a two-stage or more multi-stage pressurizing chamber. Each stage of the pressurizing chamber refers to the part where its inner diameter continuously decreases along the water flow direction, and the minimum inner diameter of the upstream stage of the pressurizing chamber is greater than the maximum inner diameter of the adjacent downstream stage of the pressurizing chamber.

[0041] As Figure 3 shown, in one or more embodiments, the pressurizing chamber 512 extends downstream along the water flow direction C and protrudes into the mixing chamber 146. The part of the pressurizing chamber 512 that protrudes into the mixing chamber 146 extends downstream a predetermined distance, and the outer diameter of the outer peripheral wall of this part gradually decreases along the water flow direction C, thus forming a tapered portion 122. The throttle hole 513 is formed at the downstream tip of the tapered portion 122 and is in fluid communication with the pressurizing chamber 512. When the water flow expands and sprays out from the throttle hole 513, a large negative pressure area can be formed between the peripheral wall of the tapered portion 122 and the inner wall of the mixing chamber 146, and external air can be inhaled through this negative pressure area. Alternatively, according to actual size requirements, the pressurizing chamber 512 does not protrude into the mixing chamber 146, so the throttle hole 513 can be formed on the upstream side wall of the mixing chamber. As Figure 3 and Figure 5As shown, in one or more embodiments, a plurality of flow disturbing ribs 121 are formed on the inner wall of the pressurizing chamber 512. These flow disturbing ribs 121 are spaced apart from each other and longitudinally extend along the inner wall of the pressurizing chamber 512. These flow disturbing ribs 512 can increase the turbulence of the water flow, thereby helping the water flow to mix the inhaled air more effectively downstream. Alternatively, the flow disturbing ribs can be replaced by at least one radial protrusion provided on the inner wall of the pressurizing chamber 512, such as one or more columnar protrusions. Alternatively, other forms of flow disturbing portions can also be formed on the inner wall of the pressurizing chamber 512.

[0042] As Figures 1 - 4 shown, the cartridge 51 has a circumferential outer wall 141 and a circumferential inner wall 142 surrounding the mixing chamber 146, and a suction groove 143 formed between the circumferential outer wall 141 and the circumferential inner wall 142. Along the water flow direction C, the downstream side 514 of the cartridge 51 is an open side. In one or more embodiments, the circumferential outer wall 141 is composed of an upper wall 141a, a lower wall 141b, a left wall 141c, and a right wall 141d. The circumferential outer wall 141 circumferentially surrounds the entire mixing chamber 146. As Figure 3 and Figure 4 shown, in one or more embodiments, a portion of the lower wall 141b near the downstream side 514 gradually expands radially outward (relative to the Figure 3 orientation shown) to form a lower expanding wall portion 140, and a microbubble water outlet 147 is formed by the space surrounded by the lower expanding wall portion 140. To improve the strength of the lower expanding wall portion 140, a plurality of reinforcing ribs 148 that are spaced apart from each other and extend substantially parallel are provided thereon. The extending direction of these reinforcing ribs 148 is substantially the same as the water flow direction leaving the microbubble water cartridge 51, so they also play a role in guiding the water flow direction. Alternatively, other forms of water outlets can be formed on the downstream side 514. For example, a microbubble water outlet is formed on the plate-shaped body 521 of the pressing plate 52. In this case, the microbubble water outlet 147 can serve as an auxiliary water outlet. As Figure 1 、 Figure 2 、and Figure 4As shown, in one or more embodiments, the circumferential inner wall 142 extends substantially parallel to the upper wall 141a, the left wall 141c, and the right wall 141d of the circumferential outer wall 141 respectively, and a gap with a predetermined distance is formed therebetween, and this gap constitutes the suction groove 143. The suction groove 143 is completely open toward the downstream side 514, so as to allow outside air to freely and sufficiently enter the suction groove 143. Correspondingly, the circumferential inner wall 142 includes an inner upper wall 142a parallel to the upper wall 141a, an inner left wall 142b parallel to the left wall 141c, and an inner right wall 142c parallel to the right wall 141d. Therefore, the suction groove 143 is a substantially U-shaped annular groove. In order to enhance the strength of the circumferential outer wall 141 and the circumferential inner wall 142 and prevent the circumferential outer wall 141 from deforming, a plurality of rib walls 144 spaced apart from each other are provided between the circumferential outer wall 141 and the circumferential inner wall 142. Alternatively, the circumferential inner wall 142 only extends along the upper wall 141a, so that a "one"-shaped suction groove 143 is formed only 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 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 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.

[0043] As Figure 4 shown, in one or more embodiments, the mixing chamber 146 is arranged at a substantially middle position of the cartridge 51. The mixing chamber 146 is substantially circularly surrounded by an annular wall 462, and its center line substantially coincides with the center lines of the water inlet 511, the enhancement chamber 512, and the throttle hole 513. Alternatively, the mixing chamber 146 may also adopt a suitable elliptical shape or the like. The downstream end 463 of the mixing chamber 146 is open. At least one air communication suction groove 143 and at least one suction port 145 communicating with the mixing chamber 146 are formed on a portion of the annular wall 462 near the upstream end of the mixing chamber 146. Therefore, these suction ports 145 are positioned close to the throttle hole 513. The suction groove 143 and the suction port 145 together constitute an air passage on the cartridge 51. The suction port 145 can be a circular hole or a long and narrow hole with appropriate dimensions. As Figure 4 shown, in one or more embodiments, a first suction port 145a and a second suction port 45b are formed on the annular wall 462. As Figure 4As shown, in one or more embodiments, a plurality of overflow ports 461 are provided on the downstream end 463 of the annular wall 462 (which is also the mixing chamber 146). These overflow ports 461 are distributed on the annular end face of the downstream end 463 and are spaced apart from each other by a predetermined distance. According to actual needs, the distance between adjacent overflow ports 461 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 foaming net 53, so it will accumulate in the mixing chamber 146. These overflow ports allow the water flow to flow out through them, so as to avoid the problems of blocking the microbubble foaming net 53 and inability to aspirate due to the accumulation of water flow in the mixing chamber 146, thus ensuring the high reliability of the continuous generation of microbubble water by the microbubble water cartridge 5.

[0044] As Figure 4 shown, in one or more embodiments, inside the cartridge 51, two fixing holes 516 symmetrically arranged with respect to the center line of the mixing chamber 146 are provided near the inner left wall 142b and the inner right wall 142c respectively, for fixing the pressing plate 52 on the cartridge 51. Each fixing hole 516 is formed on the corresponding fixing hole column 517. Each fixing hole column 517 extends towards the downstream side 514 of the cartridge 51. Alternatively, other suitable fixing structures may also be formed on the cartridge 51.

[0045] As Figure 3 shown, the microbubble foaming net 53 is fixed on the downstream end 463 of the mixing chamber 146 by the pressing plate 52. The microbubble foaming net 53 completely covers the downstream end 463 of the mixing chamber 146 and extends beyond the outer periphery of the downstream end 463. Accordingly, an annular net groove 149 is formed at the corresponding position on the inner wall of the mixing chamber 146, so that the part of the microbubble foaming net 53 extending beyond the outer periphery of the downstream end 463 can extend into the net groove 149. In one or more embodiments, the microbubble foaming net 53 includes a multi-layer net structure, such as two layers, three layers or more layers. Each layer of the net structure has at least one set of mesh holes with a diameter in the micron range. Preferably, the diameter of the mesh holes is between 0 and 1000 microns; more preferably, the diameter of the mesh holes is between 5 and 500 microns. The filter screen can be a plastic fence, a metal net, a polymer material net, or other suitable hole net structures. A plastic fence generally refers to a polymer fence, which is integrally injection-molded from a polymer material, or a polymer material is first made into a plate, and then a microporous structure is machined on the plate to form a plastic fence. A polymer material net generally refers to a net with a microporous structure formed by first making a polymer material into filaments and then weaving these filaments. The polymer material net can include nylon nets, cotton nets, polyester nets, polypropylene nets, etc. Alternatively, the net structure can be other hole net structures capable of generating microbubbles, such as a hole net structure composed of two non-micron-sized honeycomb structures. When the bubble water flows through the hole net structure, the hole net structure mixes and cuts the bubble water, thus generating a large amount of microbubble water.

[0046] Figure 6 is a perspective view of an embodiment of the pressing plate of the microbubble water cartridge of the present invention. As Figure 6 shown, in one or more embodiments, the pressing plate 52 has a plate-shaped body 521 and pressing legs 522 extending outward from the inner side surface 521a of the plate-shaped body 521. In the assembled state of the microbubble water cartridge 5, the inner side surface 521a of the plate-shaped body 521 faces the microbubble foaming net 53, so it is called the "inner side surface". Correspondingly, the side surface of the plate-shaped body 521 facing away from the microbubble foaming net 53 is called the outer side surface (not labeled in the figure). The plate-shaped body 521 also has an upper edge 521b and a lower edge 521c. In the assembled state of the microbubble water cartridge 5, the plate-shaped body 521 substantially covers the downstream side 514 of the cartridge body 51, the upper edge 521b of the plate-shaped body 521 is adjacent to the upper wall 141a of the circumferential outer wall 141, and the lower edge 521c of the plate-shaped body 521 is close to the lower wall 141b of the circumferential outer wall 141 and the microbubble water outlet 147. Therefore, the plate-shaped body 521 can act as an end cap for the downstream side 514, only exposing the microbubble water outlet 147 and the air suction groove 143. Optionally, the lower edge 521c of the plate-shaped body 521 can be formed in a substantially arc shape. In the assembled state of the microbubble water cartridge 5, the lower edge 521c bends inward to form a relatively smooth surface on its outer side. As Figure 6 shown, in one or more embodiments, the pressing plate 52 is fixed to the cartridge body 51 by screws or bolts. Correspondingly, two fixing holes 524 are formed in 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 distance between the two is greater than the maximum outer diameter of the mixing chamber 146 to avoid interference with the mixing chamber 146. Each of the two fixing holes 524 respectively matches a corresponding fixing hole 516 of the cartridge body 51. Therefore, a screw or bolt can extend through the corresponding fixing holes 524 and 516 to fix the pressing plate 52 to the cartridge body 51. In one or more embodiments, outwardly protruding sleeves 525 are respectively formed on the inner side surface 521a of the plate-shaped body 521 around each fixing hole 524. In the assembled state, each sleeve 525 can be sleeved on a corresponding fixing hole column 517. Therefore, the sleeve 525 and the corresponding fixing hole column 517 can also play a guiding role during installation. Alternatively, the pressing plate 52 can also be fixed to the cartridge body 51 in other suitable ways, such as through a snap structure. In addition to fixing the microbubble foaming net 53, the pressing plate 52 can also play a role in blocking water to prevent the sprayed water flow from splashing randomly.

[0047] As Figure 6As shown, in one or more embodiments, the pressing legs 522 include a plurality of pressing legs arranged in a ring corresponding to the end face of the downstream end 463 of the mixing chamber 146. Thus, the pressing plate 52 can press the microbubble bubbler 53 against the end face of the downstream end 463 of the mixing chamber 146 through these pressing legs. Through these pressing legs, a microbubble water chamber 515 for receiving microbubble water is formed between the plate-shaped body 521 and the microbubble bubbling net 53. A circumferential gap 523 is formed between adjacent pressing legs to allow the microbubble water to flow from the microbubble water chamber 515 to the microbubble water outlet 147 via these circumferential gaps 523. As Figure 6 As shown, in one or more embodiments, the plurality of pressing legs 522 include a first pressing leg 522a and a plurality of second pressing legs 522b. Along the circumferential direction, the width of the first pressing leg 522a is greater than that of each second pressing leg 522b. When assembling the microbubble water cartridge 5, the first pressing leg 522a with a larger width can play a role in positioning and alignment. Alternatively, the pressing legs 522 can form a cylindrical structure that can match the downstream end 463 of the mixing chamber 146, and a large opening that can be aligned with the microbubble water outlet 147 is provided on the side wall of the cylindrical structure to allow the microbubble water to flow from the microbubble water chamber 515 into the microbubble water outlet 147. When a microbubble water outlet is formed on the pressing plate body 521, the microbubble water outlet 147 serves as an auxiliary water outlet to allow the water from the overflow port 461 and the circumferential gap 523 to flow out from it.

[0048] When the above-mentioned microbubble water cartridge 5 is working, water from an external water source enters the cartridge body 51 from the water inlet 511. Along the water flow direction C, the water is pressurized in the pressurizing chamber 512 and then expands and sprays into the mixing chamber 146 through the throttle hole 513, generating a negative pressure in the mixing chamber 146. Under the action of the negative pressure, a large amount of external air is sucked into the mixing chamber 146 from the air suction groove 143 via the air suction port 145. Then, the air and the water flow are fully mixed in the mixing chamber 146 to generate bubble water. The bubble water then flows to the microbubble bubbler 53 and is cut and further mixed by the microbubble bubbler 53 to form microbubble water containing a large amount of microbubbles. The microbubble water then sprays out from the microbubble water chamber 515 via the microbubble water outlet 147 or the microbubble water outlet provided on the plate-shaped body 521.

[0049] The present invention also provides a washing device, which includes the microbubble water cartridge 5 of the present invention. The microbubble water cartridge 5 is arranged in the washing device to provide microbubble water. Through this microbubble water cartridge, 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 residue of the washing treatment agent in, for example, clothes can be reduced, which is not only beneficial to the health of users, but also can improve the user experience.

[0050] Figure 7It is a schematic structural diagram 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 and washing integrated machine, etc.

[0051] As Figure 7 shown, the pulsator washing machine 1 (hereinafter referred to as the washing machine) includes a cabinet 11. At the bottom of the cabinet 11, feet 14 are provided. At the upper part of the cabinet 11, a disc base 12 is provided, and the disc base 12 is pivotally connected to an upper cover 13. An outer tub 21 serving as a water storage tub is arranged in the cabinet 11. An inner tub 31 is arranged in the outer tub 21. At the bottom of the inner tub 31, a pulsator 32 is provided. A motor 34 is fixed to the lower part of the outer tub 21. The motor 34 is drivingly connected to the pulsator 32 through a transmission shaft 33. Drainage holes 311 are provided on the side wall of the inner tub 31. A drain valve 41 is arranged on a drain pipe 42. The 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 with one end connected to the water inlet valve 61, and a microbubble water box 5 connected to the other end of the water inlet pipe 62. The microbubble water box 5 is installed on the disc base 12. The microbubble water box 5 can be any one of the microbubble water boxes described above. Water from a water source (such as tap water or recyclable water) enters the microbubble water box 5 through the water inlet valve 61 and the water inlet pipe 62, and microbubble water is generated through the microbubble water box 5. Then the microbubble water is sprayed into the outer tub 21 and / or the inner tub 31 for clothing washing. The microbubbles in the water impact the washing agent during the process of breaking, and the microbubbles can also adsorb the washing agent through the carried negative charges. Therefore, the microbubbles can increase the mixing degree of the washing agent and water, thereby reducing the dosage of the washing agent and reducing the residue amount of the washing agent on the clothing. In addition, the microbubbles in the inner tub 31 will also impact the stains on the clothing and will adsorb the foreign substances that cause the stains. Therefore, the microbubbles enhance the decontamination performance of the washing machine.

[0052] So far, the technical solution of the present invention has 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 can combine the technical features from different embodiments, and can also make equivalent changes or substitutions to the relevant technical features. After these changes or substitutions, the technical solutions will fall within the protection scope of the present invention.

Claims

1. A micro-bubble water box, characterized in that, The microbubble water cartridge includes: a cartridge body, which is provided with a throttling hole and a mixing chamber located downstream of the throttling hole, and an inlet for connecting the throttling hole and an air passage that can form an air connection with the mixing chamber are provided on the cartridge body, so that the negative pressure caused by the water flow passing through the throttling hole in the mixing chamber can suck external air into the mixing chamber through the air passage. Among them, the mixing chamber is surrounded by an annular wall, and a suction groove arranged around the annular wall is provided on the cartridge body, and at least one suction port communicating the suction groove and the mixing chamber is formed on the annular wall. The air passage is composed of the suction groove and the at least one suction port; a microbubble foaming net, which is configured to cut the bubble water from the mixing chamber into microbubble water; and a pressing plate, which includes a plate-shaped body and pressing legs extending outward from the plate-shaped body. The pressing plate presses the microbubble foaming net against the downstream end of the mixing chamber through the pressing legs and is configured to allow the microbubble water to spray out of the cartridge body; wherein, the cartridge body has an outer circumferential wall and an inner circumferential wall surrounding the mixing chamber, and the suction groove formed between the outer circumferential wall and the inner circumferential wall; the inner circumferential wall extends parallel to the upper wall, the left wall and the right wall of the outer circumferential wall respectively, and a gap with a predetermined distance is formed between them, and the gap constitutes the suction groove.

2. The micro-bubble water box according to claim 1, characterized in that, A microbubble water outlet is formed between the pressing plate and the side wall of the cartridge body.

3. The micro-bubble water box according to claim 1, characterized in that, A microbubble water outlet is formed on the plate-shaped body, and an auxiliary water outlet is formed between the pressing plate and the side wall of the cartridge body.

4. The micro-bubble water box according to claim 1, characterized in that, The pressing legs include a plurality of pressing legs, and the plurality of pressing legs are arranged in an annular shape matching the downstream end of the mixing chamber and a circumferential gap is formed between adjacent pressing legs.

5. The micro-bubble water box according to claim 1, characterized in that, A pressurizing chamber located upstream of the throttling hole is provided in the cartridge body, and along the direction of the water flow, the inner diameter of the pressurizing chamber gradually decreases.

6. The micro-bubble water box according to claim 5, characterized in that, Turbulence ribs are provided on the inner wall of the pressurizing chamber.

7. The micro-bubble water box according to claim 1, characterized in that, A plurality of overflow ports are provided on the downstream end of the mixing chamber.

8. The micro-bubble water box according to claim 1, characterized in that, The microbubble foaming net includes a multi-layer net structure, and the diameter of at least one mesh hole in each layer of the net structure reaches the micron level.

9. A washing device, characterized in that, The washing device includes the microbubble water cartridge according to claims 1-8, and the microbubble water cartridge is arranged on the washing device to provide microbubble water for the washing device.

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