CN110881932A

CN110881932A - Dish washer with cylinder filter

Info

Publication number: CN110881932A
Application number: CN201911176924.6A
Authority: CN
Inventors: 张永奎; 杨林; 王科; 吴奕乐
Original assignee: Qingdao Haier Dishwasher Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Dishwasher Co Ltd; Haier Smart Home Co Ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-03-17

Abstract

The invention discloses a dishwasher with a cylindrical filter, comprising: the washing machine comprises a liner, a washing tank and a washing tank, wherein the liner is used for accommodating tableware to be washed, and a concave water tank is arranged at the bottom of the liner; a drainage chamber in which a drainage pump for draining water in the drainage chamber is provided; a cylindrical filter provided in the water tank; the water tank is provided with a water outlet communicated with the water drainage cavity, and the cylindrical surface filter is provided with a through hole communicated with the water outlet. Through be equipped with the mouth of crossing with the outlet intercommunication on the cylinder filter for water in the cylinder filter can directly flow in the outlet, need not pass through the filter screen, and then flows into the drainage intracavity, guarantees to avoid appearing tiny residue and blocks the drain pump suction difficulty that leads to with the filter screen, guarantees to the water supply of drain pump, realizes the normal drainage of dish washer.

Description

Dish washer with cylinder filter

Technical Field

The invention belongs to the technical field of dish-washing machines, and particularly relates to a dish-washing machine with a cylindrical surface filter.

Background

The dish washer is used to automatically clean tableware, such as dish, chopsticks, dish, knife, fork, etc. and has less labor strength, high work efficiency and high cleanness and hygiene. At present, small dish-washing machines gradually enter common families, but because food residues are stuck on tableware, a filtering structure is required to be arranged on the dish-washing machine.

In the working process of the filtering system, the function of collecting food residues can be realized only, and in order to prevent excessive food residues accumulated in the filtering system of the dishwasher, a user needs to take out the cylindrical filter after washing is finished each time, pour out the food residues, clean the food residues and then place the food residues back into the dishwasher; when the cylindrical filter filters fine food residues, the cylindrical filter is easy to adhere to the filter screen, so that the cylindrical filter is blocked, the drainage pump is difficult to suck, the drainage efficiency is low, even the normal drainage can not be realized, the working fault of the dishwasher is caused, and the inconvenience in use of a user is caused.

The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.

Disclosure of Invention

The invention provides a dish washing machine with a cylindrical filter, aiming at the problems in the prior art, wherein the cylindrical filter is provided with a through hole communicated with a water outlet, so that the water supply of a drainage pump is ensured, and the normal drainage of the dish washing machine is realized.

In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:

a dishwasher having a cylindrical filter, comprising:

the washing machine comprises a liner, a washing tank and a washing tank, wherein the liner is used for accommodating tableware to be washed, and a concave water tank is arranged at the bottom of the liner;

a drainage chamber in which a drainage pump for draining water in the drainage chamber is provided;

a cylindrical filter provided in the water tank;

the water tank is provided with a water outlet communicated with the water drainage cavity, and the cylindrical surface filter is provided with a through hole communicated with the water outlet.

Furthermore, a connecting pipe is arranged between the water tank and the water drainage cavity, a connecting cavity is arranged on the water tank, the water outlet is formed in the side wall of the connecting cavity close to one side of the cylindrical surface filter, and a connecting port connected with the connecting pipe is formed in the side wall of the connecting cavity far away from one side of the cylindrical surface filter.

Furthermore, the cylindrical filter is provided with a filter body with an upper opening, the filter body is provided with a filter support and a filter screen arranged on the filter support, the filter support is provided with a support part, and the support part is provided with the through opening.

Furthermore, the connecting cavity is arranged on the side wall of the water tank, and the supporting part is adjacent to the side wall of the water discharging opening in the connecting cavity.

Furthermore, the supporting part and the side wall of the water outlet are arranged in a sealing mode, a sealing ring sleeved on the outer side of the through opening is arranged on the supporting part, and the sealing ring is sleeved on the outer side of the water outlet.

Furthermore, an annular accommodating groove is formed in the supporting portion, the sealing ring is fixed in the accommodating groove, and the size of the sealing ring protruding out of the outer end face of the supporting portion is larger than the size of the distance between the outer end face of the supporting portion and the sealing cavity.

Furthermore, the end face, close to the water discharge opening, of the support part inclines outwards in the upward direction, and the side wall at the water discharge opening inclines outwards in the upward direction.

Furthermore, a blocking rib for blocking the residues from flowing out of the through opening is arranged in the filtering body, and the blocking rib and the through opening are arranged at intervals.

Furthermore, a plurality of blocking ribs which are arranged along the radial direction and extend upwards are arranged on the bottom surface of the filtering body.

Furthermore, the blocking rib is provided with a vertical surface close to the through opening, and an arc-shaped surface with two ends respectively connected with the vertical surface and the bottom surface of the filtering body.

Furthermore, an upwards-protruding positioning column is arranged at the center of the water tank, a positioning groove matched with the positioning column is arranged at the bottom of the filtering body, and the positioning column is located in the positioning groove.

Furthermore, a positioning protrusion protruding outwards in the radial direction is arranged on the positioning column, a concave cavity extending outwards in the radial direction is formed in the positioning groove, when the filtering body is rotationally clamped to the water tank, the positioning column is located in the positioning groove, and the positioning protrusion is rotatably located in the concave cavity.

Compared with the prior art, the invention has the advantages and positive effects that: through be equipped with the mouth of crossing with the outlet intercommunication on the cylinder filter for water in the cylinder filter can directly flow in the outlet, need not pass through the filter screen, and then flows into the drainage intracavity, guarantees to avoid appearing tiny residue and blocks the drain pump suction difficulty that leads to with the filter screen, guarantees to the water supply of drain pump, realizes the normal drainage of dish washer.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a dishwasher having a cylindrical filter according to the present invention;

FIG. 2 is a schematic view of a portion of the structure of FIG. 1;

FIG. 3 is a schematic top view of the spray structure of FIG. 2;

FIG. 4 is a schematic bottom view of the spray structure of FIG. 2;

FIG. 5 is a schematic sectional view taken along line A-A in FIG. 1;

FIG. 6 is an enlarged schematic view of the cylindrical filter of FIG. 5;

FIG. 7 is an enlarged view of the area C in FIG. 6;

FIG. 8 is a schematic sectional view taken along line B-B in FIG. 1;

FIG. 9 is an enlarged schematic view of the cylindrical filter of FIG. 8;

FIG. 10 is a schematic view of the structure of the bottom of the inner container at the water tank;

FIG. 11 is a schematic diagram of an exploded configuration of a cylindrical filter;

FIG. 12 is an enlarged schematic view of the upper cover of FIG. 11;

FIG. 13 is an enlarged schematic view of the anti-overflow arrangement of FIG. 11;

FIG. 14 is an enlarged schematic view of the filter body of FIG. 11;

FIG. 15 is an enlarged view of the blocking rib of FIG. 14;

FIG. 16 is a schematic view of the structure of FIG. 11 from another angle;

fig. 17 is an enlarged structural view of the filter body of fig. 16.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the positional relationships shown in the drawings, and the directions near the center are "inner" and vice versa. The terminology is for the purpose of describing the invention only and is for the purpose of simplifying the description, and is not intended to indicate or imply that the device or element so referred to must be in a particular orientation, constructed and operated, and is not to be considered limiting of the invention. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 17, an embodiment of a dishwasher having a cylindrical filter according to the present invention includes: the washing machine comprises a shell and a liner arranged in the shell, wherein the liner is used for accommodating tableware to be washed, the shell is not shown in the drawing, the bottom 10 of the liner is shown in figures 1 and 2, and a concave water tank 13 is arranged at the bottom 10 of the liner; the cylindrical filter 40 is provided in the water tank 13, a drain port 131 communicating with the drain chamber 14 is provided in the water tank 13, and a through-hole 414 communicating with the drain port 131 is provided in the cylindrical filter 40. Through being equipped with the mouth 414 that communicates with drain port 131 on cylindrical filter 40 for the water in cylindrical filter 40 can directly flow into drain port 131, need not pass through the filter screen on cylindrical filter 40, and then flow into in the drainage chamber 14, guarantees to avoid appearing tiny residue and blocks the drain pump 52 suction difficulty that the filter screen leads to, guarantees the water supply to drain pump 52, realizes dishwasher's normal drainage.

A concave filter chamber 16 is arranged on the bottom 10 of the inner container, a plane filter screen 30 is covered above the filter chamber 16, the filter chamber is communicated with the water tank 13, and the filter chamber is also communicated with the washing chamber. When the dishwasher is used for washing, the spraying structure 20 is arranged in the inner container, tableware is washed by spraying water flow, then the water flow falls on the bottom 10 of the inner container, is filtered by the plane filter screen 30, flows into the filter cavity and then reaches the washing cavity; then the water in the washing cavity is conveyed to the spraying structure 20 under the driving of the washing pump 51, and one cycle of spraying is realized. When the dishwasher drains water, part of water in the bottom 10 of the inner container flows into the filter cavity after being filtered by the plane filter screen 30, then flows into the water tank 13, and then flows into the drainage cavity 14 through the drainage outlet 131; the other part in the bottom 10 of the inner container flows into the cylindrical filter 40 in the water tank, and the water in the cylindrical filter 40 can reach the water tank 13 after passing through the filter screen 415, or directly flows into the drainage cavity 14 through the opening 414 and the drainage port 131; the washing water in the drain chamber 14 is drained out of the dishwasher by the drain pump 52.

Referring to fig. 14 and 17, the cylindrical filter 40 has a filter body 41 with an upper opening, the filter body 41 has a filter holder 416 and a filter screen 415 disposed on the filter holder 416, a support portion 417 is disposed on the filter holder 416, and a through opening 414 is opened on the support portion 417. By providing the support portion 417, the through hole 414 is conveniently disposed, so that the through hole 414 has a certain structural strength.

Referring to fig. 14 and 15, in order to prevent the residue in the filtering body 41 from flowing out through the opening 414, especially from flowing out of the residue with a large size, which may cause blockage of the pipeline or winding of the drain pump 52, a plurality of blocking ribs 419 are provided in the filtering body 41 for blocking the residue from flowing out of the opening 414, and the blocking ribs 419 are spaced from the opening 414; when the washing water and the residue in the filtering body 41 flow toward the outlet 414, most of the residue is stopped by the blocking rib 419, and the fine particles of the residue can flow out of the outlet 414 with the water flow. When the size of the debris is larger than the size between the blocking ribs 419 and the edge of the opening 414 or larger than the size between adjacent two blocking ribs 419, the debris is stopped. Specifically, a plurality of blocking ribs 419 are provided on the bottom surface of the filter body 41, the blocking ribs 419 being radially disposed and extending upward, and the residue is blocked between two adjacent blocking ribs 419 or between the blocking ribs 419 and the support portion 417. The blocking rib 419 has a vertical surface 4191 adjacent to the opening 414 and an arc surface 4192, and one end of the arc surface 4192 is connected to the vertical surface 4191 and the other end is connected to the bottom surface of the filter body 41.

Referring to fig. 9, a connecting pipe 15 is provided between the water tank 13 and the drainage chamber 14, and a connecting chamber 132 is provided on the water tank 13 for achieving a sealed connection between the water tank 13 and the connecting pipe 15 and ensuring communication between the drainage port 131 and the connecting pipe 15; the connecting chamber 132 has a drain 131 formed in a side wall thereof close to the cylindrical filter 40, the connecting chamber 132 has a connecting port 133 formed in a side wall thereof remote from the cylindrical filter 40, the connecting port 133 is hermetically connected to the connecting pipe 15, and an end of the connecting pipe 15 passes through the connecting port 133 and extends into the connecting chamber 132.

In order to communicate the through hole 414 with the drain hole 131, the connection chamber 132 is provided on the side wall of the water tank 13, and the support portion 417 is provided adjacent to the side wall of the connection chamber 132 at the drain hole 131; that is, the drain opening 131 and the through opening 414 are disposed adjacently so that the water flowing out of the through opening 414 can directly reach the drain opening 131.

The support portion 417 and the side wall of the drain port 131 are sealed, a sealing ring 418 sleeved outside the through hole 414 is arranged on the support portion 417, the sealing ring 418 is also sleeved outside the drain port 131, and the sealing ring 418 seals the support portion 417 and the side wall of the drain port 131, so that water flowing into the drain port 131 must pass through the through hole 414; that is, the washing water in the filtering body 41 passes through the opening 414, and then flows into the connecting chamber 132 through the drainage port 131, and the washing water in the water tank 13 also needs to flow into the filtering body 41 through the filter screen 415, and then flows out through the opening 414; the washing filter 415 can wash away fine residues adhered to the inner side of the filter screen 15, which is beneficial to self-cleaning of the cylindrical filter 40.

Referring to fig. 14 and 17, for the installation and fixation of the sealing ring 418, an annular accommodating groove 4171 is formed on the support portion 417, the sealing ring 418 is fixed in the accommodating groove 4171, and the size of the protrusion of the sealing ring 418 from the outer end face of the support portion 417 is larger than the size of the outer end face of the support portion 417 from the sealing cavity 132, that is, the sealing ring 418 is squeezed between the support portion 417 and the side wall of the drain opening 131, so as to realize direct sealing between the two.

To further ensure the ease of installation of the filter body 41 into the water tank 13 while avoiding removal of the seal ring 418, the end surface of the support portion 417 adjacent to the drain port 414 is inclined outward in the upward direction, and the side wall at the drain port 414 is inclined outward in the upward direction; the operational convenience of mounting the filter body 41 to the water tank 13 is ensured and the premature press-deformation of the seal ring 418 is avoided. The water tank 13 has a structure that is wide at the top and narrow at the bottom.

In another embodiment, the support portion 417 may be disposed adjacent to the side wall of the drain port 131, a water flow gap through which water flows may be formed between the support portion 417 and the side wall of the drain port 131, water in the water tank 13 may flow into the drain port 131 through the water flow gap, and washing water in the filter body 41 may flow into the drain port 131 through the through hole 414.

Referring to fig. 9, 10 and 17, illustrating the fixed installation between the cylindrical filter 40 and the water tank 13, a positioning column 134 protruding upwards is disposed at the center of the water tank 13, a positioning groove 410 matching with the positioning column 134 is disposed at the bottom of the filtering body 41, and the positioning column 134 is located in the positioning groove 410. When the cylindrical filter 40 is mounted to the water tank 13, the cylindrical filter 40 is placed downwards into the water tank 13, so that the positioning column 134 is located in the positioning groove 410, and the cylindrical filter 40 is positioned, and then the cylindrical filter 40 is rotated, so that the clamping jaws arranged on the outer side of the filter body 41 are clamped with the clamping sheet of the water tank 13, and the cylindrical filter 40 is mounted and fixed.

A positioning protrusion 1341 protruding radially outward is disposed on the positioning column 134, a concave cavity 4101 extending radially outward is disposed in the positioning groove 410, when the filtering body 41 is rotatably engaged with the water tank 13, the positioning column 134 is disposed in the positioning groove 410, and the positioning protrusion 1341 is rotatably disposed in the concave cavity 4101. By arranging the positioning protrusion 1341 and the concave cavity 4101, the circumferential position of the filter body 41 during installation is further limited, the claw arranged on the outer side of the filter body 41 is ensured to be adjacent to the card of the water tank 13, the positioning protrusion 1341 is ensured to rotate in the concave cavity 4101 when the filter body 41 rotates, and the claw arranged on the outer side of the filter body 41 is clamped with the card of the water tank 13.

Referring to fig. 1, 5 and 8, a spraying structure 20 is arranged in the inner container, and the tableware is washed by spraying water flow, and then the water flow falls on the bottom 10 of the inner container, is filtered by a plane filter screen 30 and flows into a washing cavity; then the water in the washing cavity is conveyed to the spraying structure 20 under the driving of the washing pump 51, and one cycle of spraying is realized. The food residue after being sprayed and washed is filtered on the plane filter screen 30, and the plane filter screen 30 is arranged on the bottom 10 of the inner container; in order to collect the residues on the planar filter screen 30 into the cylindrical filter 40, the planar filter screen 30 is provided with a mounting opening 31, and the cylindrical filter 40 is positioned at the mounting opening 31; through setting up cylindrical filter 40 on plane filter screen 30, be favorable to the collection to the residue on plane filter screen 30, be favorable to shortening the displacement of residue when collecting the residue, improve collection efficiency and collection rate. The jet flow structure 21 is further arranged, and the jet flow structure 21 sprays water flow to push residues on the plane filter screen 30 to move clockwise or anticlockwise, so that the residues on the plane filter screen 30 are pushed into the cylindrical filter 40; the bottom 10 of the inner container is provided with a concave water tank 13, the cylindrical filter 40 passes through the mounting opening 31 and is mounted in the water tank 13, and the mounting opening 31 is positioned above the water tank 13. The water tank 13 is communicated with the drainage cavity 14; in the washing process of the dish-washing machine, the washing water in the water tank 13 does not flow into the drainage cavity 14, and the washing water in the inner container flows into the washing cavity, so that the spraying circulation is realized.

Referring to fig. 1, 5, 6 and 12, the cylindrical filter 40 has a filter body 41 with an upper opening, and an upper cover 42 provided at the upper opening; the upper cover 42 has an inflow side 425 on a side close to the movement direction of the residue on the flat filter 30, an inflow port 426 for passing water and the residue is opened on the inflow side 425 of the upper cover 42, and a water through hole 427 for passing water is opened on the upper cover 42. The water jet flow of the jet flow structure 21 pushes the residues on the planar filter screen 30 to move clockwise or counterclockwise and gradually approach the inflow side 428, so that the residues enter from the inflow port 426 of the upper cover 42 along with the water flow, and the water flow can flow out from the water through holes 427 of the upper cover 42, thereby avoiding the residues from flowing out along with the water flow and being beneficial to collecting the residues into the planar filter screen 30; the residues on the plane filter screen enter the cylindrical filter, so that the residues can be cleaned conveniently after the washing is finished, and the cleaning efficiency is improved.

As shown in fig. 12, the upper cover 42 includes a cover 421 disposed to be inclined downward in the movement direction of the residue on the planar filter 30, a cover wall 422 disposed to extend downward along the outer edge of the cover 421, and a plurality of inflow ports 426 disposed in the circumferential direction are opened in the cover wall 422 on the inflow side 425. The cover 421 has a planar structure, and a water hole 427 for passing water is opened on the cover 421, so that the water reaching the cover 421 can flow in or out through the water hole 4211. The cover 421 is obliquely arranged, firstly, the height of the cover wall 422 is gradually increased in the direction close to the outflow side 425, that is, the height of the cover wall 422 on the outflow side 425 is the largest, so that the inflow port 426 can have a sufficient size, and smooth inflow of water flow and residues is ensured; secondly, the water flow is facilitated to flow out through the water through holes 427. Preferably, the cover 421 and the horizontal plane form an included angle of 4-8 degrees, and the ratio of the highest height to the lowest height of the cover wall 422 is 2-3.

Referring to fig. 2-4, the jet structure 21 may be a spray nozzle disposed in the inner container, and the spray nozzle is disposed obliquely to form a rotating water flow to provide a residue pushing force. The spray structure 21 is preferably arranged on the rotary spray structure 20, in the embodiment, the spray structure 20 is a suspension spray arm, the spray arm is positioned on the bottom surface 10 of the liner, so that the distance between the spray structure 20 and the planar filter screen 30 is smaller, and the lower end of the spray structure 20 is provided with the downward-inclined spray structure 21; in the washing process, the spraying structure 20 is in a rotating state, that is, the jet flow structure 21 is also in a rotating state, firstly, it is ensured that the water flow sprayed out of the jet flow structure 21 can form a water flow rotating clockwise or counterclockwise, most of the water flow should flow downward through the planar filter screen 30, and the water flow sprayed out of the jet flow structure 21 can certainly give a driving force to residue on the planar filter screen 30 to move clockwise or counterclockwise; secondly, the jet flow structure 21 rotates, so that the jet flow structure 21 can be close to each position of the plane filter screen 30 in the circumferential direction, and a large pushing force is given to each position of the plane filter screen 30, thereby ensuring that residues at different positions on the plane filter screen 30 can be pushed. If the spraying structure 20 rotates clockwise, the residue is pushed to move clockwise, and if the spraying structure 20 rotates anticlockwise, the residue is pushed to move anticlockwise.

In other embodiments, the jet structure 21 may be a plurality of spray nozzles fixedly disposed in the inner container, and the inclined arrangement of the spray nozzles forms an inclined water flow to provide a driving force for clockwise or counterclockwise movement of the residue on the planar filter 30.

Referring to fig. 5 and 13, in order to further prevent the residue flowing into the filtering body 41 from flowing out with the water flow, an overflow preventing structure 43 is further provided on the cylindrical filter 40, and the overflow preventing structure 43 is used for preventing the residue flowing into the filtering body 41 from flowing out with the water flow; the overflow preventing structure 43 is located in the filter body 41, and the overflow preventing structure 43 is located below the upper cover 42. The overflow preventing structure 43 has a bucket-shaped body 431 for guiding the water flow and the residue flowing down into the filtering body 41, a through hole 432 is opened at the center of the bucket-shaped body 431, and the bucket-shaped body 431 is inclined downward in a radially inward direction. After the water flow and the residues flowing in from the inflow side 425 of the upper cover 42 reach the bucket-shaped body 431, the water flow and the residues move to the through opening 432 along the inclined surface of the bucket-shaped body 431 under the action of inertia and gravity of forward movement, and fall into the filtering body 41 below the bucket-shaped body 431 through the through opening 432; even if some of the residue continues to move forward by the inertia of the forward flow after reaching the bucket body 431, the residue is filtered and stopped when reaching the water through holes 427, does not flow out of the cylindrical filter 40, and falls on the bucket body 431 again by the impact of the water flow.

Referring to fig. 11-17, illustrating the assembly between the components of the cylindrical filter 40, the cylindrical filter 40 includes a filter body 41, an upper cover 42, and an anti-overflow structure 43, wherein the anti-overflow structure 43 is snap-fit to the filter body 1 and the upper cover 42 is snap-fit to the anti-overflow structure 43.

The anti-overflow structure 43 is fixed on the filtering body 1 in a clamping manner, the filtering body 41 is a cylindrical structure with an upper opening, the filtering body 41 is provided with a filtering bracket 416 and a filtering net 415 arranged on the filtering bracket 416, and the upper end of the filtering body 41 is provided with an upper end edge 411 extending outwards in the radial direction; an extension edge 433 extending outwards is arranged on the upper edge of the bucket-shaped body 431, a notch 412 used for accommodating the extension edge 433 is formed in the inner side of the upper end edge 411 of the filtering body 41, and the extension edge 433 is located in the notch 412. By locating the extension edge 433 within the slot 412, the freedom of the anti-overflow structure 43 to move downward and side-to-side is limited relative to the filter body 41.

In order to further limit the freedom of upward movement and rotation of the overflow preventing structure 43, a plurality of inwardly extending blocking protrusions 413 are provided at intervals along 411 at the upper end of the filter body 41, and the size of the blocking protrusions 413 in the radial direction is larger than that of the slots 412 in the radial direction; a first avoiding groove 434 for avoiding the blocking protrusion 413 is formed in the inner side of the extension edge 433, and the blocking protrusion 413 is located in the first avoiding groove 434, so that the rotation movement of the overflow-preventing structure 43 can be limited. A stopper 435 matched with the blocking protrusion 413 is provided on the bucket-shaped body 431, and the stopper 435 is located below the blocking protrusion 413 to limit the upward movement of the anti-overflow structure 43.

In order to mount the plurality of stoppers 435 below the stopper 413, at least one U-shaped catch 436 is provided on the bucket-shaped body 431, the catch 436 has two catch walls disposed opposite to each other, and the stoppers 435 are provided on the catch 436 on the catch wall away from the axis of the bucket-shaped body 431. A hand pressing block 4361 extending outwards is arranged on a clamping wall, far away from the axis of the bucket-shaped body 431, of the clamping buckle 436, the hand pressing block 4361 is used for clamping or releasing the clamping buckle 436, and the hand pressing block 4361 is located above the stopping protrusion 413; the anti-overflow structure 43 is snap-fitted to the filter body 41 or disengaged from the filter body 41 by pressing the hand-press block 4361 inward, so that the catch wall on the outside of the catch 436 moves inward, so that the stop 435 on the catch 436 is disengaged from the limit of the catch protrusion 413. It is preferred to provide the catch 436 on the opposite side of the inlet side 425 of the cap 42.

The upper cover 42 is fixed on the anti-overflow structure 43 in a clamping manner, a mounting edge 423 extending outwards along the lower end of the cover wall 422 is arranged on the upper cover 42, the mounting edge 433 is covered by the mounting edge 423, and the mounting edge 423 is located in the notch 412. The mounting edge 423 has a horizontal portion located above the extension edge 433 and a vertical portion located outside the extension edge 433. A second escape groove 424 for escaping the stopper protrusion 413 is provided at the mounting edge 423.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. A dishwasher having a cylindrical filter, comprising:

a cylindrical filter provided in the water tank;

2. The dishwasher according to claim 1, wherein a connection pipe is provided between the sump and the drain chamber, the sump is provided with a connection chamber, the connection chamber is provided with the drain port on a side wall of a side close to the cylindrical surface filter, and the connection chamber is provided with a connection port connected to the connection pipe on a side wall of a side far from the cylindrical surface filter.

3. The dishwasher of claim 2, wherein the cylindrical filter has a filter body with an upper opening, the filter body has a filter support and a filter net disposed on the filter support, a support portion is disposed on the filter support, and the support portion is provided with the through opening.

4. The dishwasher of claim 3, wherein the connection chamber is provided on a side wall of the sump, and the support portion is provided adjacent to the side wall at the drain opening in the connection chamber.

5. The dishwasher of claim 4, wherein the support portion is sealingly arranged with a side wall of the drain opening, and a sealing ring is provided on the support portion and is fitted outside the through opening, and the sealing ring is also fitted outside the drain opening.

6. The dishwasher of claim 3, wherein an end surface of the support portion adjacent to the drain opening is inclined outwardly in an upward direction, and a side wall of the drain opening is inclined outwardly in an upward direction.

7. The dishwasher according to any one of claims 1 to 6, wherein the cylindrical filter has a filter body with an upper opening, and a blocking rib for blocking the residue from flowing out of the through opening is provided in the filter body, and the blocking rib is spaced apart from the through opening.

8. The dishwasher of claim 7, wherein a plurality of blocking ribs are provided on the bottom surface of the filter body, the blocking ribs being radially arranged and extending upward, the blocking ribs having a vertical surface close to the through opening, and an arc-shaped surface having both ends connected to the vertical surface and the bottom surface of the filter body, respectively.

9. The dishwasher according to any one of claims 1 to 6, wherein a positioning column protruding upwards is arranged at the center of the water tank, a positioning groove matched with the positioning column is arranged at the bottom of the cylindrical surface filter, and the positioning column is positioned in the positioning groove.

10. The dishwasher of claim 9, wherein the positioning post is provided with a positioning protrusion protruding radially outward, the positioning groove is provided with a cavity extending radially outward, the positioning post is located in the positioning groove when the filter body is rotatably engaged with the sink, and the positioning protrusion is rotatably located in the cavity.