CN115595767A

CN115595767A - Filter screen structure, liquid storage box assembly and washing equipment

Info

Publication number: CN115595767A
Application number: CN202110721937.8A
Authority: CN
Inventors: 柳双龙; 于元元; 邱峰; 刘建设
Original assignee: Chongqing Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Current assignee: Chongqing Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2023-01-13
Also published as: JP2024525026A; WO2023273825A1

Abstract

The invention relates to the field of washing, and particularly provides a filter screen structure, a liquid storage box assembly and washing equipment, aiming at solving the problems that foreign matters enter a pipeline and block the components when a detergent is filled. To this end, the filter screen structure includes: the primary filter screen body is of a cylindrical structure, the cylindrical structure is provided with a bottom, a liquid filling opening and an annular side wall, and primary filter holes are formed in the bottom and the annular side wall respectively; the secondary filter screen body extends between the bottom and the near end, and secondary filter holes are formed in the secondary filter screen body, so that the target liquid injected from the liquid filling opening can flow out of the secondary filter screen body after being filtered by the primary filter screen body; the invention can effectively filter foreign matters mixed in the detergent and avoid the blockage and blockage of components due to the entering of a pipeline.

Description

Filter screen structure, liquid storage box assembly and washing equipment

Technical Field

The invention relates to the field of washing, and particularly provides a filter screen structure, a liquid storage box assembly and washing equipment.

Background

Along with the improvement of the living standard of people, washing equipment becomes one of household appliances commonly used in daily life of people; the washing apparatuses may be classified into various washing apparatuses such as a drum type, a stirring type, and a pulsator type according to washing methods. Taking a pulsator washing device as an example, the washing device comprises a control system, a driving motor, a pulsator, a washing cavity, a water inlet and drainage system, a liquid storage box and the like; the liquid storage box is used for storing detergent and specifically comprises a filling port, a liquid storage cavity, a liquid feeding port and the like. When washing clothes, a user only needs to place clothes in the washing cavity, a washing program is set through the control system, washing equipment can automatically inject proper water and detergent according to the amount of the clothes, and the driving motor is started to drive the impeller to rotate, so that the clothes are automatically cleaned in the washing cavity; in the daily use and maintenance process, a user only needs to supplement the detergent into the liquid storage box regularly. Effectively improves the washing efficiency and lightens the housework burden. However, one of the main problems with the liquid storage box of the current washing equipment is that the filling port of the liquid storage box has no effective filtering structure. Therefore, when a customer adds a detergent, foreign matters are easily mixed, and after entering the pipeline, the foreign matters are easy to block internal components (such as a valve and a pump), so that after-sale problems such as water overflow are caused, and customer complaints are caused.

In order to solve the above problems, a liquid storage box with a filtering structure has been developed in the prior art. For example, chinese patent application CN106868799A discloses an automatic detergent feeding device and a washing machine. The automatic detergent putting device comprises a putting body, wherein a putting cavity is arranged on the putting body, and a detachable filter screen is arranged on an adding port of the putting cavity; one side of the filter screen, which is far away from the adding port, is provided with a gland clamped with the adding port, and the filter screen is fixed between the adding port and the gland through the gland. When the detergent is added, the liquid flows in from the filling port and flows out from the liquid feeding port after passing through the filter screen; foreign matters mixed therein can be effectively filtered; the foreign bodies can be conveniently taken out by disassembling the filter screen. However, the filter screen has a relatively simple structure, and the filtering effect is still to be improved. Therefore, there is room for improvement in this technique.

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

Disclosure of Invention

The invention provides a filter screen structure, aiming at solving the technical problem that a filling port of a liquid storage box in the prior art is not provided with an effective filter structure, so that foreign matters are easy to be mixed when a detergent is added, and a pipeline is blocked. The filter screen structure has opposite distal and proximal ends and includes: the primary filter screen body is of a cylindrical structure, the cylindrical structure is provided with a bottom, a liquid filling opening positioned at the far end and an annular side wall extending from the bottom to the far end, and primary filter holes are formed in the bottom and the annular side wall respectively; and a secondary filter screen body extending between the bottom and the proximal end and having secondary filter holes formed thereon so that the target liquid injected from the filling opening can flow out of the secondary filter screen body after being filtered by the primary filter screen body.

The screen structure of the present invention has opposite distal and proximal ends and includes a primary screen body and a secondary screen body. Wherein, the primary filter screen body is of a cylindrical structure. The cylindrical structure has a bottom, a filling opening at a distal end, and an annular side wall extending from the bottom to the distal end, primary filtering holes being formed in the bottom and the annular side wall, respectively. Through the configuration, the target liquid can rapidly seep from the primary filtering holes after being injected from the liquid filling opening, and foreign matters mixed in the target liquid can be filtered by the bottom and the annular side wall of the primary filtering net body for the first time. The secondary filter screen body extends between the base and the proximal end and has secondary filter apertures formed therein. With the above configuration, the target liquid can be quickly flown out from the secondary filtering holes after seeping from the primary filtering holes, and therefore foreign matters mixed into the target liquid can be secondarily filtered by the secondary filtering net body.

In a preferred embodiment of the above described filter screen structure, the filter screen structure further comprises a plate-shaped strainer-like structure formed at the proximal end. Through the configuration, when the target liquid at the bottom of the liquid storage box becomes thick, the filter screen structure provided by the invention is held by a hand to be repeatedly lifted and pressed, and the target liquid which becomes thick at the bottom of the liquid storage box can be separated by utilizing the plate-shaped strainer type structure so as to ensure the flow rate of the target liquid.

In a preferred embodiment of the above-described filter screen construction, a plurality of spaced apart connection plates are provided between the bottom and the plate-shaped strainer construction, so that a predetermined space is formed between the connection plates. The connecting plate can improve the structural strength between the primary filter screen body and the plate-shaped strainer type structure, and can more stably and effectively transfer acting force to the plate-shaped strainer type structure when the filter screen structure is repeatedly lifted and pressed. The target liquid seeping from the primary filter screen body is collected to fill the preset space. When the target liquid flows out from the liquid storage box quickly, the sufficient target liquid collected in the preset space can be supplemented in time, and air is prevented from being entrained when the target liquid flows out. Meanwhile, when the filter screen structure is repeatedly lifted and pressed, the viscous target liquid at the bottom of the liquid storage box can enter the preset space to be reused after being separated.

In the preferable technical scheme of the filter screen structure, the filter screen structure further comprises a handle located at the far end, and the handle extends outwards to be far away from the end face of the liquid filling opening. Through the configuration, the handle is higher than the liquid filling opening. Therefore, when the target liquid is injected into the liquid adding port, the target liquid cannot directly contact the handle, and a user can avoid fingers from directly contacting the target liquid when taking and placing the filter screen structure, so that hands are effectively protected. The target liquid does not contact the handle, and the handle can be kept dry, so that the handle is convenient to hold and take.

In a preferred technical scheme of the filter screen structure, one end of the handle, which is far away from the liquid filling opening, is turned outwards to form a holding part. The holding part is convenient for a user to apply force when lifting and pressing.

In a preferred technical scheme of the upper filter screen structure, a holding through hole is formed in the handle. When the user holds the handle through the finger, hold the through-hole and can hold the finger tripe, be convenient for the user and pull up.

In a preferred embodiment of the above-described filter screen structure, the annular side wall has a multi-step cylindrical wall, and a diameter of the multi-step cylindrical wall gradually decreases in a direction from the distal end to the proximal end. Through the configuration, the target liquid injected from the liquid filling port sequentially flows through the multistage stepped cylindrical wall from the far end and seeps from the primary filtering holes of the multistage stepped cylindrical wall; as the diameter of the cylindrical wall is gradually reduced, the on-off surface in the flow direction of the target liquid is gradually reduced, so that more target liquid seeps from the annular side wall; thereby achieving rapid seepage of the target fluid.

In a preferred embodiment of the above filter screen structure, the annular side wall has a three-stage stepped cylindrical wall. Through the configuration, the seepage speed of the target liquid from the annular side wall can be ensured, and the simplicity and the efficiency of the processing technology can be ensured.

In a preferred technical solution of the above-mentioned filter screen structure, the secondary filter screen body is an arc-shaped wall, and an opening is formed between the arc-shaped wall and the bottom. Through foretell configuration, when target liquid flows out from the stock solution box fast, the opening can make things convenient for target liquid more quick, efficient replenishment, collect to predetermined space to guarantee that sufficient target liquid waits to flow out in the predetermined space, and then smuggle the air secretly when avoiding target liquid to flow out.

In the preferable technical scheme of the filter screen structure, a hollow liquid level mark is further arranged at the far end. Through the configuration, after the target liquid is injected, the liquid level of the added target liquid can be conveniently observed from the hollow part.

The present invention also provides a liquid storage cartridge assembly, comprising: the liquid storage box is provided with a target liquid filling port and a liquid feeding port communicated with the target liquid filling port; and a filter screen structure according to any one of the above, the filter screen structure being configured to be insertable into the target liquid filling port, and the secondary filter screen body matching the liquid feeding port, such that the target liquid reenters the liquid feeding port after being filtered by the primary filter screen body and the secondary filter screen body. Through the configuration, the target liquid injected from the liquid filling opening is filtered by the primary filter screen body and the secondary filter screen body for two times, and foreign matters mixed in the target liquid can be effectively filtered.

The invention also provides washing equipment which comprises the liquid storage box assembly. Through the configuration, foreign matters mixed in the washing liquid during injection can be effectively filtered; when the foreign matter appears, through getting the foreign matter that takes out that can be convenient of putting the filter screen, effectively avoid foreign matter to get into behind the pipeline jamming inside components and parts and cause overflow scheduling after-sales problem.

Drawings

Preferred embodiments of the present invention are described below in conjunction with the appended drawings, wherein:

FIG. 1 is a rear perspective view of one embodiment of a filter screen configuration of the present invention;

FIG. 2 is a front perspective view of one embodiment of the filter screen construction of the present invention shown in FIG. 1;

FIG. 3 is a schematic top perspective view of one embodiment of the filter screen configuration of the present invention shown in FIG. 1;

FIG. 4 is a schematic perspective view of a reservoir in one embodiment of a reservoir assembly according to the present invention;

FIG. 5 is a schematic cross-sectional view of a reservoir cartridge in one embodiment of the reservoir cartridge assembly of the present invention shown in FIG. 4;

FIG. 6 is a schematic bottom view of the lower cover of the reservoir in the embodiment of the reservoir assembly of the invention shown in FIG. 4;

FIG. 7 isbase:Sub>A schematic cross-sectional view ofbase:Sub>A lower cover of the reservoir andbase:Sub>A filter screen structure of the reservoir assembly of the present invention taken along line A-A in FIG. 6;

fig. 8 is an enlarged schematic view at B in fig. 7.

List of reference numerals:

1. a filter screen structure; 1a, a primary filter screen body; 1b, a distal end; 1c, a proximal end; 11. a liquid filling port; 111. a limiting ring; 112. hollow liquid level marks; 12. an annular sidewall; 121. a first stepped cylindrical wall; 122. a second stepped cylindrical wall; 123; a third stepped cylindrical wall; 124. primary filtering holes; 125. a transverse divider bar; 125', a bottom transverse divider; 126. a longitudinal partition fence; 127. reinforcing ribs; 127', a bottom reinforcing rib; 13. a bottom; 2a, a secondary filter screen body; 21. an arcuate wall; 22. secondary filtering holes; 3a, a plate-shaped colander type structure; 31. a substrate; 32. a sewage draining groove; 4a, a handle; 41. an upper end surface; 42. a holding part; 43. a holding through hole; 51. a first fluid infusion port; 52. a second fluid infusion port; 6. a connecting plate; 61. a middle plate; 62. a side plate; 7. a liquid storage box assembly; 7a, a liquid storage box; 71. an upper cover; 711. a detergent filling port; 72. a lower cover; 721. a liquid storage cavity inner bottom; 722. a liquid feeding port.

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", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" 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 "assembled", "disposed" and "connected" are to be construed broadly, and may be, for example, 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 a filling port of a liquid storage box in the prior art is not provided with an effective filtering structure, so that foreign matters are easy to be mixed when a detergent is added to cause pipeline clamping stagnation, the invention provides a filtering net structure 1. The filter screen arrangement 1 has opposite distal and

proximal ends

1b, 1c and comprises: a primary filter mesh body 1a, the primary filter mesh body 1a being a cylindrical structure having a bottom 13, a liquid-adding port 11 at a distal end 1b, and an annular side wall 12 extending from the bottom 13 to the distal end 1b, primary filter holes 124 being formed in the bottom 13 and the annular side wall 12, respectively; and a secondary filter mesh body 2a, the secondary filter mesh body 2a extending between the bottom 13 and the proximal end 1c, and a secondary filter hole 22 formed in the secondary filter mesh body 2a so that the object liquid injected from the liquid-adding port 11 can flow out of the secondary filter mesh body 2a after being filtered by the primary filter mesh body 1 a. The filter structure 1 of the present invention enables the target liquid to be filtered twice: the target liquid can be rapidly permeated from the primary filtering holes 124 after being injected from the charging port 11, and foreign matters mixed into the target liquid can undergo primary filtering while flowing through the primary filtering holes 124 on the bottom 13 and the annular side wall 12 of the primary filtering mesh body 1 a; the target liquid rapidly flows out from the secondary filtering holes 22 after seeping from the primary filtering holes 124, and foreign matters mixed in the target liquid are thus subjected to the secondary filtering by the secondary filtering holes 22 of the secondary filtering mesh body 2a.

Unless expressly indicated to the contrary, reference herein to the "distal end" of the filter construction is to the end which, in use, is proximal to the user; conversely, reference herein to the "proximal end" of the filter arrangement is to the end which, in use, is inserted into the interior of the reservoir. Unless expressly indicated to the contrary, "scoop-like structure" as referred to herein refers to a structure with a plurality of through holes or channels such that fluid may move through the through holes or channels from one side of the structure to the opposite side of the structure. Unless expressly indicated to the contrary, "longitudinal" as referred to herein refers to a direction extending between the distal and proximal ends of the filter screen structure, while "transverse" refers to a direction perpendicular to the longitudinal direction.

FIG. 1 is a rear perspective view of one embodiment of a filter screen structure according to the present invention; FIG. 2 is a front perspective view of one embodiment of the filter screen construction of the present invention shown in FIG. 1; fig. 3 is a schematic top perspective view of the filter screen structure of fig. 1 according to an embodiment of the present invention.

As shown in fig. 1 and 2, in one or more embodiments, the filter screen structure 1 of the present disclosure has opposite distal and

proximal ends

1b, 1c, and includes: a primary filter screen body 1a, a secondary filter screen body 2a, a plate-shaped strainer-like structure 3a, and a handle 4a. In one or more embodiments, the filter screen structure 1 is formed from polypropylene (PP plastic) by one shot injection molding. Alternatively, the filter screen structure 1 may be made of other suitable thermoplastic resins, including but not limited to polyethylene, polyvinyl chloride, polypropylene, or polystyrene. Primary filter mesh body 1a extends from distal end 1b towards proximal end 1 c. A plate-like strainer 3a is located at the proximal end 1c and a handle 4a is located at the distal end 1b. The handle 4a is directly connected to the primary filter net body 1a and is integrally formed with the primary filter net body 1 a. Alternatively, handle 4a may be formed separately from primary filter element 1a and then joined together by welding or the like in a suitable manner. The secondary filter screen body 2a is positioned between the primary filter screen body 1a and the plate-shaped strainer-like structure 3a and is connected to each other. Along the longitudinal direction of the filter screen structure 1, a secondary filter screen body 2a spaces the primary filter screen body 1a from a plate-shaped strainer-like structure 3 a.

In one or more embodiments, connection plates 6 spaced apart from each other are provided between the plate-like strainer structure 3a and the primary filter screen body 1a, so that a predetermined space is formed between the connection plates 6. The predetermined space may also be referred to herein as a fluid replacement space. The predetermined space can be used for collecting and storing the detergent seeped out from the primary filter net body 1 a. The predetermined space is capable of providing sufficient detergent when detergent is pumped from the reservoir, thereby avoiding air entrapment when the detergent is rapidly discharged. On the other hand, the predetermined space can store the dispensed, thickened detergent for reuse. In one or more embodiments, the webs 6 may be parallel to each other and spaced apart from each other by the same distance. Alternatively, the webs 6 may not be parallel to each other or may be spaced apart from each other by different distances. In one or more embodiments, the connecting plate 6 has three, one middle plate 61 and two side plates 62 located on either side of the middle plate 61. Alternatively, the connection plates 6 may take other suitable numbers, such as one connection plate or two connection plates.

As shown in fig. 1 and 2, the primary filter mesh body 1a has a cylindrical structure. In one or more embodiments, the primary filter screen body 1a is a straight tubular structure. Alternatively, the primary filter screen body 1a may also be a circular truncated cone-shaped or a conical cylinder-shaped structure.

As shown in fig. 1-3, the cylindrical structure of primary filter mesh body 1a has a bottom 13, a fill opening 11 at distal end 1b, and an annular sidewall 12 extending from bottom 13 to distal end 1b. In one or more embodiments, the annular sidewall 12 has three stepped cylindrical walls connected in series, in the direction from the distal end 1b toward the proximal end 1c, a first stepped cylindrical wall 121, a second stepped cylindrical wall 122, and a third stepped cylindrical wall 123 in that order. The diameter of the three-step cylindrical wall gradually decreases in the direction from the distal end 1b to the proximal end 1 c. Alternatively, the annular side wall 12 is an annular wall without steps, or an annular wall with one step, or an annular wall with two steps, or an annular wall with more than three steps. A filling opening 11 is located on the side of the first stepped cylindrical wall 121 at the distal end 1b for injecting, for example, a washing liquid. In one or more embodiments, an outwardly protruding stop ring 111 is provided at the location of the filling opening 11. In one or more embodiments, a hollow liquid level mark 112, such as a hollow MAX word, is provided at the lower portion of the filling opening 11, so that the liquid level of the target liquid after the target liquid is added can be easily seen from the hollow portion after the target liquid is injected. The third stepped cylindrical wall 123 is directly integral with the bottom 13, and the bottom 13 extends transversely to the annular side wall 12.

As shown in fig. 1 to 3, a plurality of primary filtering holes 124 are formed in the annular side wall 12 and the bottom 13, respectively. On the annular side wall 12, the primary filtering holes 124 are formed by a plurality of transverse partition columns 125 spaced parallel to each other and extending transversely and longitudinal partition columns 126 extending longitudinally and spaced apart from each other, so that the primary filtering holes on the annular side wall 12 form a filtering grid for implementing the primary filtering of the detergent. In one or more embodiments, a portion of the longitudinal partition column 126 protrudes on the inner wall of the annular sidewall 12 toward the longitudinal center of the screen structure 1, forming a bead 127. Thereby enhancing the structural strength of the filter grid. Similarly, a plurality of primary filtering holes 124 are also formed in the bottom 13, separated by bottom transverse partition bars 125 'and bottom reinforcing ribs 127' and constituting a filtering grid. In one or more embodiments, 128 primary filter holes 124 are formed in the first stepped cylindrical wall 121, 90 primary filter holes 124 are formed in the second stepped cylindrical wall 122, and 80 primary filter holes 124 are formed in the third stepped cylindrical wall 123; 24 primary filtering holes 124 are formed in the bottom 13. Therefore, the primary filter screen body 1a has all the primary filter holes 322, so that the detergent can be quickly leaked and exhausted, and the laundry detergent is prevented from being accumulated and overflowing. Alternatively, the primary filter screen body 1a may have more or less than 322 primary filter holes 124. In one or more embodiments, the primary filter apertures 124 have a diameter in the range of 1.8mm to 2mm, and thus are effective in blocking foreign matter having a diameter of 1.8mm or more.

As shown in fig. 3, in one or more embodiments, secondary filter screen body 2a is an arcuate wall 21 extending from an outer edge of plate-like strainer-like structure 3a toward bottom 13. Alternatively, the secondary filter screen body 2a is formed as a straight wall or other suitably shaped wall. A plurality of secondary filtering holes 22 are formed in the arc-shaped wall 21. In one or more embodiments, the secondary filter apertures 22 are arranged in two rows along the longitudinal direction. Optionally, one or more ribs (not shown) may be formed on the inside of the arcuate wall 21. In one or more embodiments, the web 6 extending between the bottom 13 of the primary filter screen body 1a and the plate-shaped strainer structure 3a extends laterally to the secondary filter screen body 2a, wherein the two side plates 62 extend to the sides of the curved wall 21, respectively, and the middle plate 61 extends to the middle of the two rows of secondary filter holes 22. The connection plate 6 thus also supports the secondary filter screen body 2a. In one or more embodiments, a first fluid infusion port 51 is formed between the upper edge of the arc-shaped wall 21 and the outer edge of the bottom 13, and the first fluid infusion port 51 is communicated with the fluid infusion space between the connecting plates 6 to facilitate the rapid passing of the detergent.

As shown in fig. 2, in one or more embodiments, the plate-like strainer-like structure 3a at the proximal end 1c has a generally disk-like base plate 31 and a plurality of drainage channels 32 formed in the base plate 31. The dirt discharge grooves 32 are partitioned by a plurality of partition bars parallel to each other, and the dirt discharge grooves 32 penetrate the base plate 31, so that the dirt discharge grooves 32 together form a distribution grid. Alternatively, the substrate 31 may have other shapes matching with the liquid storage box. In one or more embodiments, one or more ribs (not shown) are provided on the upper surface of the substrate 31 (i.e., the surface facing the base 13). The ribs may be perpendicular to the dividing strips to increase the structural strength of the dispenser grid. As shown in fig. 1, in one or more embodiments, a second fluid infusion port 52 is formed above the plate-shaped strainer-like structure 3a and between each side plate 62 and the corresponding side of the secondary filter screen body 2a to facilitate the rapid passage of the detergent.

As shown in fig. 1 to 3, the handle 4a at the distal end 1b extends outward away from the end surface of the filling opening 11 so that the upper end surface 41 of the handle 4a is higher than the filling opening 11. In one or more embodiments, an end of the handle 4a away from the filling opening 11 is folded outward by 90 degrees to form a grip portion 42, which facilitates the user to apply force when pulling or pressing. In one or more embodiments, a grip through hole 43 having an elliptical shape is provided on the handle 4a. When the user pinches the handle 4a with fingers, the holding through hole 43 can accommodate finger pad, which is convenient for the user to lift upwards.

In the use process of the filter screen structure 1, after being injected from the liquid adding port 11, the detergent rapidly seeps from the primary filtering holes 124, and foreign matters are filtered for the first time when passing through the annular side wall 12 and the bottom 13 of the primary filter screen body 1 a; the detergent that has permeated through the second filtering holes 22 permeates through the second filtering holes, and the foreign matters are secondarily filtered while passing through the second filtering net body 2a.

In an alternative embodiment, the inventive filter screen construction 1 comprises a primary filter screen body 1a, a plate-shaped strainer-like construction 3a, and a handle 4a, but the secondary filter screen body 2a is omitted. In this embodiment, the configuration of the primary filter screen body 1a, the plate-shaped strainer-like structure 3a, and the handle 4a may all be the same as or similar to the previous embodiments.

FIG. 4 is a schematic perspective view of a reservoir in one embodiment of a reservoir assembly of the present invention; FIG. 5 is a schematic cross-sectional view of a reservoir cartridge in an embodiment of the reservoir cartridge assembly of the present invention shown in FIG. 4;

FIG. 6 is a schematic bottom view of the lower lid of the reservoir cartridge of the embodiment of the reservoir cartridge assembly of the invention shown in FIG. 4; FIG. 7 isbase:Sub>A schematic cross-sectional view of the lower cover of the liquid storage box in combination with the filter screen structure of the liquid storage box assembly of the present invention, as viewed in half along section line A-A of FIG. 6; fig. 8 is an enlarged schematic view at B in fig. 7.

As shown in fig. 4-8, the present invention also provides a cartridge assembly 7, the cartridge assembly 7 comprising a cartridge 7a and a filter screen structure 1 according to any of the above embodiments.

As shown in fig. 4 to 6, the reservoir 7a includes an upper cover 71 and a lower cover 72. When the upper cover 71 and the lower cover 72 are assembled with each other, a reservoir is formed between the upper cover 71 and the lower cover 72. A detergent filling port 711 is provided in the upper cover 71. As shown in fig. 5, a reservoir inner bottom 721 is provided on the lower cover 72. A liquid feed port 722 is provided in the side wall of the reservoir inner bottom 721. The detergent filler port 711 communicates with the liquid feed port 722. In one or more embodiments, the fluid feed port 722 is in flow communication with the reservoir chamber in a direction perpendicular to the axial direction of the reservoir chamber.

As shown in fig. 7 and 8, the filter screen structure 1 is configured to be inserted into the detergent filling port 711. The secondary filter screen body 2a is matched with the liquid feeding port 722, so that the detergent flowing into the liquid feeding port 722 is ensured to flow through the secondary filter screen body 2a first, and the detergent enters the liquid feeding port 722 after being filtered by the primary filter screen body 1a and the secondary filter screen body 2a. As shown by the dotted arrow in fig. 7, after the detergent is injected from the detergent injection port 711, the detergent seeps from the annular side wall 12 and the bottom 13 of the primary filter screen body 1a through the primary filtering holes 124; after the primary filtration of the primary filter screen body 1a, the detergent rapidly flows into and collects to a predetermined space from the primary filtration hole 124, the first fluid infusion port 51 and the second fluid infusion port 52; then filtered by the secondary filter net body 2a and flows out from the liquid feeding port 722. The two-time filtering can effectively prevent foreign matters from entering the pipeline to block the internal elements. The preset space can collect sufficient detergent in time, and air is prevented from being entrained when the detergent flows out quickly.

The upper surface of the reservoir inner bottom 721 is conformed to the lower surface of the base plate 31 of the plate-shaped strainer construction 3a so that when the filter structure 1 is assembled in the reservoir box 7a, there is no or very little clearance between the upper surface of the reservoir inner bottom 721 and the lower surface of the base plate 31 of the plate-shaped strainer construction 3 a. When the upper surface of the reservoir inner bottom 721 is flat, the lower surface of the substrate 31 is also flat. When the upper surface of the liquid storage cavity inner bottom 721 is an arc surface, the lower surface of the substrate 31 is also a matching arc surface. When the detergent on the inner bottom 721 of the liquid storage cavity becomes viscous, the filter screen structure 1 of the invention is repeatedly lifted and pressed by holding, and the viscous detergent on the inner bottom 721 of the liquid storage cavity can be distributed by utilizing the plate-shaped colander-type structure 3a so as to ensure the flow rate of the target liquid. The detergent dispensed is reduced in size and thus can flow into the predetermined space, or enter the liquid feed port 722 with the detergent in the predetermined space to participate in the washing again, or be blocked and filtered by the secondary filter net body 2a to prevent the clogging of the pipeline.

In one or more embodiments, the detergent filling port 711 of the reservoir 7a is provided with a limiting mechanism (not shown). The limiting mechanism can be matched with a limiting ring 111 at the liquid filling port 11. The stop collar 111 also helps to support the filter screen structure 1 in position at the detergent filler port 711 when the filter screen structure 1 is assembled to the reservoir 7 a.

The invention also provides a washing device (not shown in the attached drawings) which comprises the liquid storage box assembly 7. In one or more embodiments, the reservoir assembly 7 can be removably mounted to the washing apparatus. Alternatively, the reservoir assembly 7 may be integrally mounted on the washing apparatus.

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 apparent to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims

1. A filter screen construction, the filter screen construction having opposite distal and proximal ends and comprising:

the primary filter screen body is of a cylindrical structure, the cylindrical structure is provided with a bottom, a liquid filling opening positioned at the far end and an annular side wall extending from the bottom to the far end, and primary filter holes are formed in the bottom and the annular side wall respectively; and

a secondary filter mesh body extending between the bottom and the proximal end and having a secondary filter hole formed therein so that a target liquid injected from the filling opening may flow out of the secondary filter mesh body after being filtered by the primary filter mesh body.

2. The filter screen structure of claim 1, further comprising a plate-like strainer-like structure formed at the proximal end.

3. A filter screen construction according to claim 2, wherein a plurality of webs are provided spaced apart from each other between the bottom and the plate-like strainer-type construction so as to form predetermined spaces between the webs.

4. The filter screen structure of any of claims 1-3, further comprising a handle at the distal end, the handle extending outwardly away from an end face of the filler neck.

5. A filter screen structure according to any of claims 1 to 3, wherein the annular side wall has a multi-step cylindrical wall, the diameter of the multi-step cylindrical wall decreasing in a direction from the distal end to the proximal end.

6. A screen structure according to claim 5, wherein the annular side wall has a three-stage stepped cylindrical wall.

7. A screen structure according to any of claims 1-3, wherein the secondary screen body is a curved wall and an opening is formed between the curved wall and the bottom.

8. A screen structure according to any of claims 1 to 3, wherein a hollow level marker is also provided at the distal end.

9. A liquid storage cartridge assembly, characterized in that, liquid storage cartridge assembly includes:

the liquid storage box is provided with a target liquid filling port and a liquid feeding port communicated with the washing liquid filling port; and

the filter screen construction according to any one of claims 1-7, configured to be insertable into the target liquid fill port and the secondary filter screen body is mated to the liquid feed port such that the target liquid reenters the liquid feed port after being filtered through the primary and secondary filter screen bodies.

10. A washing apparatus, characterized in that the washing apparatus comprises a reservoir assembly according to claim 9.