WO2020220901A1 - Filter structure of dishwasher and dishwasher - Google Patents

Abstract

A filter structure of a dishwasher and a dishwasher, wherein the filter structure of the dishwasher comprises a filter screen (1), the filter screen (1) comprises several first filter ribs (13) and several second filter ribs (14), and the second filter ribs (14) and the first filter ribs (13) are arranged to cross each other so as to form a mesh structure. The filter screen (1) of the filter structure is a mesh structure, which does not need post-perforation, thereby saving on fabrication costs. The filter screen (1) comprises a mesh structure formed by the second filter ribs (14) and the first filter ribs (13) being arranged to cross each other. Not only do the second filter ribs (14) and the first filter ribs (13) enhance the strength of the filter screen (1), but the mesh structure also prevents the occurrence of a situation in which filter pores of a metal filter screen are blocked by washing impurities.

Description

Filter structure for dishwasher and dishwasher Technical field

The invention relates to the field of dishwashers, in particular to a filter structure for dishwashers and dishwashers.

Background technique

In the prior art, the dishwasher includes a filter and a flat filter. The flat filter of a traditional dishwasher is mostly made of metal, which results in a higher cost of the flat filter, and the metal flat filter is installed at the bottom of the dishwasher and the inner tank. It is necessary to add parts to improve the fit between the flat filter and the bottom of the inner liner to reduce the gap between the two to prevent washing impurities from entering the gap and remaining, which leads to a further increase in cost. In addition, metal flat filter screens are mostly porous. Due to the small pore size, the filter screen may be blocked by washing impurities.

The Chinese patent with application number CN201710213330.2 discloses a dishwasher, which includes an inner tank and a sink. The part where the inner tank connects with the sink is downwardly cylindrically recessed, and a flat filter is placed in the inner tank. In the recessed part of the bladder, a support member is ringed between the flat filter screen and the bottom surface of the recessed part for supporting the flat filter screen. A sealing ring is arranged between the outside of the recessed part and the water tank. In the dishwasher, components are added between the flat filter screen and the bottom of the liner to improve the fit between the flat filter screen and the bottom of the liner, and the cost is high, and the installation of the flat filter screen is very complicated.

In view of this, the present invention is proposed.

Summary of the invention

In order to solve the above technical problems, the present invention provides a dishwasher filter structure and a dishwasher.

To achieve this objective, the present invention adopts the following technical solutions:

The first object of the present invention is to provide a dishwasher filter structure, including a filter screen, the filter screen includes a plurality of first filter ribs and a plurality of second filter ribs, the second filter ribs and the first filter ribs Cross set to form a network structure.

Furthermore, the second filter surface formed by the second filter ribs is arranged below the first filter surface formed by the first filter ribs.

Preferably, the second filter rib and the first filter rib are arranged vertically and horizontally.

Preferably, the filter screen is integrally formed.

Preferably, the filter screen is a plastic filter screen.

Further, the width of the second filter mesh formed between two adjacent second filter ribs starts from the upper surface of the second filter rib in contact with the first filter rib toward the bottom of the second filter rib. The surface direction gradually increases.

Preferably, the two opposite second side surfaces of the second filter mesh are inclined toward the lower surface of the second filter rib and extend in opposite directions, and the distance between the two second side surfaces gradually increases in the direction of the lower surface.

More preferably, the two second side surfaces are inclined and extend symmetrically toward the lower surface of the second filter rib.

Further, the upper surface of the first filter rib is a circular arc surface or an inclined surface, or a chamfer/round is included between the upper surface and the side surface of the first filter rib.

And/or, the width of the first filter mesh formed between two adjacent first filter ribs starts from the lower surface of the first filter rib in contact with the second filter rib toward the first filter rib The direction of the upper surface gradually increases.

Preferably, the two opposite first side surfaces of the first filter mesh are inclined toward the upper surface of the first filter rib and extend in opposite directions, and the distance between the two first side surfaces gradually increases in the direction of the upper surface.

Preferably, the two first side surfaces are inclined and extend symmetrically toward the upper surface of the first filter rib.

Further, the filter screen has a ring structure, and at least part of the first filter ribs extend in the direction of the inner ring of the filter screen.

Preferably, the filter mesh includes at least two filter regions, the first filter ribs of the first filter region extend from the outer ring to the inner ring of the filter mesh along the water flow direction, and at least part of the first filter ribs of the second filter region extend from the filter mesh The outer ring extends toward the inner ring of the filter screen along the water flow direction, and at least a part of the first filter ribs of the second filter zone extend from the filter screen outer ring to the first filter zone along the water flow direction.

More preferably, the first filter ribs of the first filter zone are arranged parallel to each other.

More preferably, the first filter ribs of the second filter zone are arranged parallel to each other.

Further, the filter screen includes a first filter area and two second filter areas, and the two second filter areas are symmetrically arranged on both sides of the first filter area.

The filter screen is an annular filter screen with a fan-shaped gap, the inner ring of the filter screen is arranged at the center of the ring filter screen, and the first filter rib of the first filter area is parallel to the symmetrical center line of the fan-shaped gap, so The first filter ribs of the second filter area are parallel to the two sides of the fan-shaped gap.

The second object of the present invention is to provide a dishwasher including a dishwasher filter structure, and the dishwasher filter structure includes the above-mentioned filter screen. A water tank is arranged under the filter screen, the filter screen includes a plurality of first filter ribs and a plurality of second filter ribs, and the second filter ribs are arranged to cross the first filter ribs to form a mesh structure.

Further, the dishwasher further includes an inner container, the bottom of the inner container is recessed downward to form a groove, and the filter screen is installed in the groove.

Preferably, the side wall of the groove extends obliquely, the filter screen has a ring structure, and the side of the outer ring of the filter screen cooperates with the side wall of the groove to extend obliquely.

More preferably, the side wall of the groove extends obliquely from the bottom of the inner liner to the center of the groove.

Preferably, the filter mesh is recessed downward from the outer ring to the inner ring to form a funnel shape.

Further, the bottom of the outer ring of the filter mesh is in line contact with the bottom of the inner tank groove.

Preferably, the bottom surface of the outer ring of the filter net in contact with the groove of the inner liner is an arc surface protruding toward the groove of the inner liner.

Further, a number of outlets through which water flows are provided between the bottom of the outer ring of the filter screen and the bottom of the groove of the inner liner.

Preferably, the bottom of the outer ring of the filter screen includes a plurality of protrusions spaced apart, and the recess between two adjacent protrusions forms an outlet through which the water flows.

More preferably, the end surface of the protrusion matching with the bottom of the liner groove is an arc surface protruding toward the bottom of the liner groove.

Compared with the prior art, the present invention has the following beneficial effects:

The filter screen of the present invention includes a mesh structure formed by the second filter ribs and the first filter ribs intersecting. The second filter ribs and the first filter ribs are intersected to enhance the strength of the filter mesh, and the mesh structure avoids the like The filter pores of the metal filter are also blocked by washing impurities. The first filter rib and the second filter rib are arranged in two layers to cross, which further enhances the strength of the filter screen and prevents the filter screen from being damaged. The two-layer intersecting mesh structure has a larger effective filter area than the metal filter mesh with filter holes. The filter structure includes an integrated plastic filter screen, which saves cost compared with a metal filter screen. The plastic filter can be integrally formed without the need for later drilling, saving the cost of forming.

Description of the drawings

The accompanying drawings are used as a part of the present invention to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings in the following description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the attached picture:

Figure 1 shows a schematic diagram of the filter screen of the present invention;

Figure 2 shows a schematic diagram of the installation of the filter screen of the present invention;

Figure 3 shows a partial schematic diagram of the filter screen of the present invention;

Figure 4 shows a side view of the filter screen of the present invention;

Figure 5 shows an enlarged view of part A of Figure 4;

Fig. 6 shows an enlarged partial sectional view of the outer ring of the filter screen of the present invention.

The names of the components are as follows:

1. Filter, 11, outer ring, 111, protrusion, 12, inner ring; 13, first filter rib, 14, second filter rib, 15, mesh, 2. bottom of inner tank, 21, groove, 3. Filter.

It should be noted that these drawings and text descriptions are not intended to limit the scope of the invention in any way, but to explain the concept of the invention for those skilled in the art by referring to specific embodiments.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments are described below clearly and completely. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

As shown in Figures 1 to 6, the present invention discloses a dishwasher filter structure, which includes a filter screen 1. The filter screen 1 includes a plurality of first filter ribs 13 and a plurality of second filter ribs 14. The two filter ribs 14 are intersected with the first filter rib 13 to form a mesh structure.

In the present invention, the filter screen 1 includes a mesh structure formed by intersecting the second filter ribs 14 and the first filter ribs 13. The second filter ribs 14 and the first filter ribs 13 both enhance the strength of the filter screen 1. , The mesh structure prevents the filter pores of the metal filter screen 1 from being blocked by washing impurities. Preferably, the filter screen 1 is integrally formed without the need for later drilling, which saves the cost of forming. Preferably, the filter screen is a plastic filter screen 1, which saves cost compared with the metal filter screen 1. In the present invention, the dishwasher filter structure includes a filter screen 1, which is a flat filter screen of a dishwasher. The flat filter screen is not limited to a flat plate-shaped filter screen, and may also include a curved filter screen or Inclined filter screen.

Example one

In this embodiment, the second filter surface formed by the second filter ribs 14 is arranged below the first filter surface formed by the first filter ribs 13; the first filter ribs 13 and the second filter ribs 14 are two The layer crossing arrangement further enhances the strength of the filter screen 1 and prevents the filter screen 1 from being damaged. The two-layer intersecting mesh structure has a larger effective filter area than the metal filter screen 1 in the shape of filter holes. And it is a two-layer cross-arranged network structure, which is equivalent to two interception and filtration of the water flow, which not only achieves a better filtering effect but is not blocked by washing impurities. Furthermore, the second filter ribs 14 and the first filter ribs 13 are arranged in two layers to cross each other, which makes it easier to collect the residue, which is convenient for cleaning or the residue to enter the filter 3.

Preferably, the second filter ribs 14 and the first filter ribs 13 are arranged to cross vertically and horizontally. It prevents the washing impurities from clogging the mesh 15 of the filter screen 1, and at the same time it is more conducive to the passage of water. Moreover, the meshes 15 of the first filter ribs 13 and the second filter ribs 14 arranged in a vertical and horizontal cross are uniform in size, and there will be no partial blockage, which makes it difficult to remove.

Preferably, the filter screen 1 is integrally formed; no later drilling is required, which saves production costs. Preferably, the filter screen is a plastic filter screen 1, which saves cost compared with the metal filter screen 1.

Example two

On the basis of implementation 1, in this implementation, the width of the second filter mesh formed between two adjacent second filter ribs 14 is from the upper part of the second filter rib 14 in contact with the first filter rib 13 The surface gradually increases toward the lower surface of the second filter rib 14. At this time, filtering is achieved by the upper surface of the first filter rib 13 and the second filter rib 14 in contact with the first filter rib 13, and the second filter mesh is from the upper surface of the second filter rib to the lower surface of the second filter rib. This distance does not affect the filtering effect, and has a drainage effect on the water flow, which is equivalent to reducing the filtering thickness of the entire filter screen to only the thickness of the first filtering rib 13, and the filtering effect is good. In addition, the strength of the filter screen 1 can be increased by the cooperation of the second filter ribs 14 and the first filter ribs 13, and the filter screen 1 can be increased by increasing the thickness of the second filter ribs 14 on the premise that the first filter ribs 13 are as thin as possible. Strength of. The two opposite second side surfaces of the second filter mesh are inclined toward the lower surface of the second filter rib 14 and extend in opposite directions, and the distance between the two second side surfaces gradually increases in the direction of the lower surface; In this case, the main part where the second filter rib 14 cooperates with the first filter rib 13 to achieve filtering is the upper surface of the second filter rib 14, which is equivalent to reducing the filter thickness of the filter screen 1 of the present invention to only the first filter rib 13 Compared with a large-thickness filter screen, the washing impurities are less likely to block the mesh 15; at the same time, the inclined second side surface when the water flows through the second filter rib 14 is more conducive to the flow of water. The distance between the two opposite second side surfaces of the second filter rib 14 gradually decreases in the direction of the lower surface; when looking down from above the first filter rib 13, the inclined second side surface of the second filter rib 14 cannot be seen , The second side does not produce any resistance to the water flow, and can even guide the water flow to flow downwards, which widens the space for the water flow to flow downwards and makes the water flow easier to flow downwards. The second side extends obliquely and can be integrally formed by drafting, which saves forming steps and does not require post-processing. Preferably, two opposite second side surfaces of the second filter mesh extend symmetrically toward the lower surface of the second filter rib 14. The molding is simple and is more conducive to the flow of water.

Example three

On the basis of the foregoing embodiment, in this embodiment, the upper surface of the first filter rib 13 is a circular arc surface or an inclined surface; and/or, a first filter formed between two adjacent first filter ribs 13 The width of the meshes gradually increases from the lower surface of the first filter rib 13 in contact with the second filter rib 14 toward the upper surface of the first filter rib 13. Preferably, the two opposite first side surfaces of the first filter mesh are inclined toward the upper surface of the first filter rib 13 and extend in opposite directions, and the distance between the two first side surfaces gradually increases toward the upper surface. This embodiment includes four implementation modes, respectively, the upper surface of the first filter rib 13 is a circular arc surface; the upper surface of the first filter rib 13 is an inclined surface; the two opposite first filter mesh holes The first side surface is inclined toward the upper surface of the first filter rib 13 and extends in the opposite direction, and the distance between the two first side surfaces gradually increases in the direction of the upper surface; and the upper surface of the first filter rib 13 is round Curved surface, and the two opposite first side surfaces of the first filter mesh are inclined toward the upper surface of the first filter rib 13 and extend in opposite directions, and the distance between the two first side surfaces gradually increases toward the upper surface . It also includes an embodiment in which the upper surface of the first filter rib 13 is an inclined surface, and the two opposite first side surfaces of the first filter mesh are inclined and opposite to the upper surface of the first filter rib 13 Extend, and the distance between the two first side surfaces gradually increases in the direction of the upper surface. Of course, it also includes a combination of the upper surface of the first filter rib 13 being a flat surface, the edges of the flat surface being chamfered or rounded, and the combination of chamfering and rounding the flat surface and other embodiments. Preferably, the two first side surfaces extend obliquely and symmetrically toward the lower surface of the first filter rib 13.

The upper surface of the first filter rib 13 is a circular arc surface or an inclined surface, which facilitates the downward flow of water and prevents the downward flow of water when the upper surface is flat. The upper surface of the first filter rib 13 is a plane, and the edges of the plane are chamfered or rounded to prevent the sharp edges from scraping the washing impurities and causing the accumulation of washing impurities, thereby blocking the filter mesh 15. The two opposite first sides of the first filter mesh extend obliquely and oppositely to the lower surface of the first filter rib 13, which also facilitates the flow of water, does not accumulate washing impurities, and is compatible with the inclined second filter rib 14 When matched, the filtering thickness of the filter screen is further reduced, and the filtering effect is better.

Example four

On the basis of the above embodiment, in this embodiment, the filter screen 1 has a ring structure, and the filter structure further includes a filter 3. In general, the filter 3 is detachably arranged in the inner ring 13 of the filter screen. Or the filter 3 is rotatably arranged at the inner ring 12 of the filter mesh. For example, the filter 3 includes at least two layers of filter parts. The filter 3 is installed at the inner ring 12 of the filter screen, and at least part of the first filter ribs 13 extend in the direction of the filter 3 installed in the inner ring of the filter screen to guide the water flow to the filter 3. A filter screen 1 is installed in a general dishwasher, and a filter 3 is also arranged in the center of the filter screen 1. Both the filter screen 1 and the filter 3 filter the water flow. In the present invention, the first filter rib 13 extends in the direction of the inner ring 12 of the filter screen, and guides the water flow in the direction of the filter 3 provided at the inner ring 12.

The dishwasher includes an inner container, the bottom 2 of the inner container is recessed downward to form a groove 21, and the filter 1 is installed in the groove 21. The bottom of the groove is provided with an opening, and the sink of the dishwasher is connected with the opening. A filter screen 1 and a filter 3 are provided to filter the water flow of the dishwasher, so that the water flowing into the water tank does not contain large washing impurities, and avoids adverse effects on other parts in the water circuit. The bottom 2 of the inner container includes a water guide surface that guides the water flow to the groove 21. The water guide surface extends obliquely downward from the bottom edge of the inner container toward the groove 21. Generally, the bottom of the inner container of the dishwasher is rectangular. The forming is convenient, and four water guiding surfaces are formed along the four edges of the rectangle in the direction of the groove 21. At least part of the first filter ribs 13 extend along the water guiding direction of the water guiding surface, and the first filter ribs 13 cooperate with the water guiding surface to guide the water flow to the filter 3. At least part of the first filter ribs 13 not only extend in the direction of the inner ring 12 of the filter screen, but also extend in the direction of the water guiding surface in cooperation with the water guiding surface.

In a preferred embodiment, the filter screen 1 includes at least two filter zones, and the first filter ribs 13 of the first filter zone extend from the outer ring 11 of the filter screen to the inner ring 12 in the direction of water flow, and the water flows to the inner ring 12 Direction guide. The first filter rib 13 of the first filter zone cooperates with the water guide surface to extend from the outer ring 11 of the filter screen to the inner ring 12 to guide the water flow to the inner ring 12. At least part of the first filter rib 13 in the second filter area extends from the outer ring 11 to the inner ring 12 of the filter screen in the direction of water flow to guide the water flow to the direction of the inner ring 12. At least part of the first filter rib 13 in the second filter area extends from the filter screen The outer ring 11 extends along the water flow toward the first filter area, guides the water flow in the direction of the first filter rib 13, and then guides the water in the direction of the inner ring 12 through the direction of the first filter rib 13.

Specifically, the first filter ribs 13 of the first filter area are arranged parallel to each other; the first filter ribs 13 of the second filter area are arranged parallel to each other. The second filter ribs 14 are arranged crosswise under the first filter ribs 13 to form a mesh structure; the second filter ribs 14 and the first filter ribs 13 are arranged crosswise and crosswise. The filter screens 1 are arranged in different regions to make the meshes 15 formed between the first filter ribs 13 and the second filter ribs 14 more uniform in size, and prevent the first filter ribs 13 from being arranged in the direction of the inner ring 12. The size of the holes 15 is uneven, which in turn leads to uneven filtering effects.

In a further embodiment, the filter screen 1 includes a first filter area and two second filter areas, and the two second filter areas are symmetrically arranged on both sides of the first filter area; the structure is simple, and the shape is simple. Convenience. The first filter area includes two parts, which are oppositely arranged on both sides of the inner ring 12 of the filter screen. The two parts of the first filter area are respectively matched with the two water guide surfaces at the bottom of the inner tank, and the second filter area is respectively matched with the other two water guide surfaces at the bottom of the inner tank to guide the water flow to the inner ring 12.

The filter screen 1 is an annular filter screen 1 with a fan-shaped gap, the inner ring 12 is arranged at the center of the ring filter screen 1, and the first filter ribs 13 of the first filter zone are all aligned with the symmetric center of the fan-shaped gap The lines are parallel, and the first filter ribs 13 of the second filter zone are parallel to the two sides of the fan-shaped gap. That is to say, including the first filter ribs 13 in three directions, which not only facilitates the collection of washing impurities to the filter 3, but also facilitates the installation of the second filter ribs 14 to obtain uniform filter meshes 15 to achieve a uniform filtering effect , To prevent that when the first filter ribs 13 and the second filter ribs 14 are arranged to cross vertically and horizontally, the filter meshes 15 generated between the first filter ribs 13 and the second filter ribs 14 are different in size, and the filtering effect is unstable. The first filter ribs 13 in three directions cooperate with different water guide surfaces to guide the water flow.

Generally, the bottom of the dishwasher liner extends obliquely in the direction of the filter screen 1. A common arrangement is that the bottom of the dishwasher liner is divided into four parts from the four sides and extends in the direction of the filter screen 1 respectively. In the present invention, the filter screen 1 is matched with the bottom of the inner container of the dishwasher to provide at least two filter areas. Specifically, the direction of the first filter rib 13 in each filter area is biased to guide the water flow to the inner ring of the filter screen 1. A preferred embodiment is that the filter area of the present invention is respectively matched with the correspondingly inclined dishwasher liner and the whole is inclined downward in the direction of the inner ring of the filter screen. That is to say, the inclination directions of the first filter areas arranged on both sides of the inner ring are different, and the inclination directions of the second filter areas arranged on both sides of the first filter area are also different. The inclination of the first filter area and the second filter area are different. The direction is also different.

The filter screen 1 is recessed downwards from the edge toward the inner ring 12 to form a funnel shape to facilitate water flow to the filter 3 at the inner ring to gather and flow into the filter 3 for filtering.

The filter screen 1 is also provided with an indicator arrow, which indicates the installation direction of the filter screen. The indicator arrow points to the direction of the filter, and also shows the approximate flow direction of the water flow. Preferably, the indicating arrow is integrally formed above the filter net.

Example five

This embodiment discloses a dishwasher, which includes the filter structure of the dishwasher as described in the foregoing embodiment. The dishwasher filter structure includes a filter screen 1 and a water tank located below the filter screen 1. The filter screen 1 is an integrated plastic filter screen. The filter screen 1 includes a plurality of first filter ribs 13 and a plurality of second filters. The ribs 14, the second filter ribs 14 and the first filter ribs 13 are intersected to form a mesh structure.

Specifically, the water tank has a water inlet and a water outlet communicating up and down, the filter screen 1 is arranged above the water inlet of the water tank, the filter screen 1 has a ring structure, and the filter 3 is installed at the inner ring 12. The filter screen 1 is an integrally formed plastic filter screen 1, which saves cost compared with a metal filter screen, and the plastic filter screen 1 can be integrally formed without the need for later drilling, which saves the cost of forming. The filter screen 1 includes a mesh structure formed by intersecting the second filter ribs 14 and the first filter ribs 13. The second filter ribs 14 and the first filter ribs 13 both enhance the strength of the filter screen 1 and avoid the mesh structure. The filter pores of the metal filter screen 1 are blocked by washing impurities. Preferably, the second filter ribs 14 are arranged crosswise under the first filter ribs 13 to form a net-like structure; the first filter ribs 13 and the second filter ribs 14 are arranged in two layers to cross each other, further enhancing the filter screen 1 The strength prevents the filter 1 from being damaged. At the same time, the intersecting mesh structure of the two layers has a larger effective filtration area than the metal filter screen 1 in the shape of filter holes. And it is a two-layer cross-arranged network structure, which is equivalent to two interception and filtration of the water flow, which not only achieves a better filtering effect but is not blocked by washing impurities. Furthermore, the second filter ribs 14 and the first filter ribs 13 are arranged in two layers to cross each other, which makes it easier to collect the residue, which is convenient for removal or the residue to enter the filter 3. More preferably, the second filter ribs 14 and the first filter ribs 13 are arranged to cross vertically and horizontally. Avoid washing impurities to block the mesh 15 of the filter screen, and at the same time it is more conducive to the passage of water. Moreover, the meshes 15 of the first filter ribs 13 and the second filter ribs 14 arranged in a vertical and horizontal cross are uniform in size, and there will be no partial blockage, which makes it difficult to remove.

The filter screen 1 is a flat filter screen of a dishwasher. The flat filter screen is not limited to a flat plate-shaped filter screen, and may also include a curved filter screen or a sloped filter screen. In the present invention, the filter screen 1 is recessed downward from the outer ring to the inner ring 12 to form a funnel shape to facilitate water flow to the filter 3 to converge to flow into the filter 3 for filtering.

Example Six

On the basis of the fifth embodiment, the dishwasher further includes an inner container, the bottom 2 of the inner container is recessed downward to form a groove 21, and the filter screen 1 is installed in the groove 21. 21 is provided with an opening, and the water inlet of the water tank communicates with the groove 21 through the opening. The filter screen 1 has a ring structure, and the filter screen 1 is recessed from the outer ring 11 toward the inner ring 12 to form a funnel shape. Preferably, the side wall of the groove 21 extends obliquely, and the side of the outer ring 11 of the filter meshes and extends obliquely with the side wall of the groove 21; the fit between the two is high, resulting in the groove 21 and the outer ring of the filter The distance between them is small to further filter out washing impurities and prevent washing impurities from entering between the groove 21 and the outer ring 11 of the filter screen. Generally, the side walls of the groove 21 extend obliquely, and the outer ring of the filter mesh extends vertically. The distance between the upper end of the side wall of the groove 21 and the outer ring of the filter is greater than the distance between the lower end of the side wall of the groove 21 and the outer ring of the filter. A sealing element is provided to achieve the seal between the outer ring of the filter screen and the groove 21. In contrast, in the present invention, the side of the outer ring of the filter screen 11 and the side wall of the groove 21 cooperate to extend obliquely. Shape setting, high fit. More preferably, the side wall of the groove 21 extends obliquely from the bottom 2 of the inner liner to the center of the groove 21. It is easy to form and easy to install and disassemble.

Example Seven

On the basis of the above-mentioned embodiment, the bottom of the outer ring 11 of the filter in this embodiment is in line contact with the bottom of the inner groove 21; this makes the cooperation between the two more stable and prevents the large contact range when the surface is in contact. The wide range of cooperation between the operators leads to unstable installation. The bottom surface of the outer ring 11 of the filter screen in contact with the groove 21 of the inner liner is an arc surface protruding toward the groove of the inner liner. The arc surface is in line contact with the bottom of the inner liner groove 21, which makes the cooperation between the two more stable and prevents unstable installation caused by surface contact. The arc surface has no sharp edges, which prevents the sharp edges from rubbing against the liner groove 21 and scratches the liner groove 21.

Example eight

On the basis of the above-mentioned embodiment, in this embodiment, a number of outlets are provided between the bottom of the filter outer ring 11 and the bottom of the inner groove 21; The water flow entering between the side of the groove 21 and the groove 21 accumulates here. Preferably, the bottom of the outer ring 11 of the filter screen includes a plurality of protrusions 111 spaced apart, and the recesses between two adjacent protrusions 111 form an outlet for the water flow; the spaced protrusions 111 form a zigzag shape to facilitate water flow The outflow will not accumulate between the inner groove 21 and the filter screen 1. More preferably, the end surface of the protrusion 111 matching with the bottom of the liner groove 21 is an arc surface protruding toward the bottom of the liner groove. The arc surface is in line contact with the bottom of the inner liner groove 21, which makes the cooperation between the two more stable and prevents unstable installation caused by surface contact. The arc surface has no sharp edges, which prevents the sharp edges from rubbing against the liner groove 21 and scratches the liner groove 21.

The above are only the preferred embodiments of the present invention and do not limit the present invention in any form. Although the present invention has been disclosed in the preferred embodiments as above, it is not intended to limit the present invention. Any technology familiar with the present invention Without departing from the scope of the technical solution of the present invention, the personnel can use the technical content suggested above to make slight changes or modification into equivalent embodiments with equivalent changes, but any content that does not depart from the technical solution of the present invention is based on the technology of the present invention Essentially, any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the present invention.

Claims (10)

A filter structure for a dishwasher, which is characterized in that it includes a filter mesh, the filter mesh includes a plurality of first filter ribs and a plurality of second filter ribs, the second filter ribs and the first filter ribs are arranged to form a cross grid. The dishwasher filter structure according to claim 1, wherein the second filter surface formed by the second filter ribs is arranged below the first filter surface formed by the first filter ribs; Preferably, the second filter rib and the first filter rib are arranged vertically and horizontally; Preferably, the filter screen is integrally formed; Preferably, the filter screen is a plastic filter screen. The dishwasher filter structure of claim 2, wherein the second filter mesh formed between two adjacent second filter ribs has a width from the second filter rib to the first filter rib. The upper surface of the contact gradually increases toward the lower surface of the second filter rib; Preferably, the two opposite second side surfaces of the second filter mesh are inclined toward the lower surface of the second filter rib and extend in opposite directions, and the distance between the two second side surfaces gradually increases in the direction of the lower surface. Big; More preferably, the two second side surfaces are inclined and extend symmetrically toward the lower surface of the second filter rib. The filter structure of the dishwasher according to claim 2, wherein the upper surface of the first filter rib is a circular arc surface or an inclined surface or the upper surface and the side surface of the first filter rib include a chamfer/ Fillet And/or, the width of the first filter mesh formed between two adjacent first filter ribs starts from the lower surface of the first filter rib in contact with the second filter rib toward the first filter rib The direction of the upper surface gradually increases; Preferably, the two opposite first side surfaces of the first filter mesh are inclined toward the upper surface of the first filter rib and extend in opposite directions, and the distance between the two first side surfaces gradually increases in the direction of the upper surface ； More preferably, the two first side surfaces are inclined and extend symmetrically toward the upper surface of the first filter rib. The dishwasher filter structure according to any one of claims 1-4, wherein the filter screen is a ring structure, and at least part of the first filter ribs extend in the direction of the inner ring of the filter screen; Preferably, the filter screen includes at least two filter zones, the first filter rib of the first filter zone extends from the outer ring of the filter screen to the inner ring of the filter screen in the direction of water flow, and at least part of the first filter rib of the second filter zone extends from the The outer ring of the screen extends in the direction of the water flow toward the inner ring of the filter, and at least a part of the first filter ribs in the second filter area extend from the outer ring of the filter to the first filter area in the direction of the water flow; More preferably, the first filter ribs of the first filter zone are arranged parallel to each other; More preferably, the first filter ribs of the second filter zone are arranged parallel to each other. The dishwasher filter structure according to claim 5, wherein the filter screen comprises a first filter area and two second filter areas, and the two second filter areas are symmetrically arranged on the first filter area. Both sides of the filter area; Preferably, the filter screen is a ring-shaped filter screen with a fan-shaped gap, the inner ring of the filter screen is arranged at the center of the ring-shaped filter screen, and the first filter ribs of the first filter area are all aligned with the symmetric center of the fan-shaped gap The lines are parallel, and the first filter ribs of the second filter area are parallel to the two sides of the fan-shaped gap. A dishwasher, characterized by comprising the dishwasher filter structure according to any one of claims 1-6. The dishwasher according to claim 7, further comprising an inner container, the bottom of the inner container is recessed downward to form a groove, and the filter is installed in the groove; Preferably, the side wall of the groove extends obliquely, the filter screen has an annular structure, and the side of the outer ring of the filter screen cooperates with the side wall of the groove to extend obliquely; More preferably, the side wall of the groove extends obliquely from the bottom of the liner downward to the center of the groove; Preferably, the filter mesh is recessed downward from the outer ring to the inner ring to form a funnel shape. The dishwasher according to any one of claims 7-8, wherein the bottom of the outer ring of the filter is in line contact with the bottom of the inner tank groove; Preferably, the bottom surface of the outer ring of the filter net in contact with the groove of the inner liner is an arc surface protruding toward the groove of the inner liner. The dishwasher according to any one of claims 7-8, wherein a plurality of outlets through which water flows are provided between the bottom of the outer ring of the filter and the bottom of the groove of the inner liner; Preferably, the bottom of the outer ring of the filter screen includes a plurality of protrusions spaced apart, and the recess between two adjacent protrusions forms an outlet through which the water flow passes; More preferably, the end surface of the protrusion matching with the bottom of the liner groove is an arc surface protruding toward the bottom of the liner groove.

Images