A dishwasher

Abstract

The application discloses a dishwasher, which comprises an inner container, a plane filter screen, a cylindrical filter and a jet structure. The cylindrical filter has an open upper filter body and an upper cover arranged at the upper opening. The upper cover is a flow-in side near the moving direction of residues on the plane filter screen. A flow inlet for water flow and residues is arranged on the flow-in side of the upper cover. Water holes for water flow are arranged on the upper cover. In order to prevent residues entering the cylindrical filter from flowing out with water flow, the flow inlet for water flow and residues is arranged on the upper cover. The jet structure pushes residues on the plane filter screen to move by spraying water flow and approaches the flow inlet on the upper cover. After water flow and residues flow into the filter body through the flow inlet, the water flow can flow out through the water holes. Residues on the plane filter screen enter the cylindrical filter, which is convenient for cleaning residues after washing and improves the cleaning efficiency.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of dishwashers, and particularly relates to a dishwasher. BACKGROUND

[0002] The dishwasher is a device for automatically cleaning dishes, chopsticks, plates, dishes, knives and forks, etc. It reduces the labor intensity of the cooks in restaurants, hotels and canteens of government units, improves the work efficiency, and improves the cleanness. At present, small dishwashers are gradually entering ordinary families, but food residues are adhered to the dishes, and a filter structure needs to be arranged on the dishwasher.

[0003] During the working process of the filter system, only the collection function of the food residues can be realized. In order to prevent too many food residues from being accumulated in the dishwasher filter system, the user needs to take out the cylindrical filter, pour out the food residues and clean it after each washing, and then put it back into the dishwasher. In addition, the food residues left on the flat filter screen need to be cleaned, especially for the cleaning of the flat filter screen, which is very inconvenient to operate, and seriously affects the comfort of the user using the product.

[0004] The above information disclosed in the background of the application is only used to increase the understanding of the background of the application, and therefore, it can include prior art known by those skilled in the art. SUMMARY

[0005] The present application is directed to the above problems in the prior art, and proposes a dishwasher, which is provided with a spray structure and an upper cover, so as to facilitate the pushing of the residues on the flat filter screen into the cylindrical filter, and facilitate the cleaning of the residues after washing, and improve the cleaning efficiency.

[0006] In order to achieve the above-mentioned application purposes, the present application adopts the following technical solutions:

[0007] A dishwasher comprises:

[0008] An inner container for containing dishes to be washed;

[0009] A flat filter screen arranged on the bottom of the inner container, and an installation opening is formed in the flat filter screen;

[0010] A cylindrical filter arranged on the bottom of the inner container, and the cylindrical filter is located at the installation opening;

[0011] A spray structure for spraying water flow to push the residues on the flat filter screen to move in clockwise or counterclockwise direction;

[0012] The cylindrical filter has an open-top filter body, an upper cover arranged at the open top; the upper cover is an inflow side near the moving direction of the residue on the plane filter screen, the inflow side of the upper cover is provided with an inflow port for water flow and residue passing through, and the upper cover is provided with a water passing hole for water flow passing through.

[0013] Further, the upper cover has a cover body arranged downwardly inclined to the moving direction of the residue on the plane filter screen, and a cover wall arranged downwardly extending along the outer edge of the cover body, and a plurality of the inflow ports are arranged circumferentially on the cover wall of the inflow side.

[0014] Further, the cover body is a plane structure, and the water passing hole is arranged on the cover body.

[0015] Further, the inner container is provided with a rotatable spray arm, and the spray arm is provided with a downwardly inclined spray structure.

[0016] Further, the cylindrical filter further has an anti-overflow structure for preventing the residue flowing into the filter body from flowing out with the water flow, and the anti-overflow structure is located in the filter body and below the upper cover.

[0017] Further, the anti-overflow structure has a bucket-shaped body for guiding the water flow and residue flowing into the filter body to flow downward, and a through opening is arranged at the center of the bucket-shaped body, and the bucket-shaped body is inclined downward in the direction of radially inward.

[0018] Further, the ratio of the inner diameter of the filter body to the diameter of the through opening is 3-5.

[0019] Further, an extension along is arranged on the upper edge of the bucket-shaped body and extends outwardly, and a notch is arranged on the upper end of the filter body along the inner side for accommodating the extension along, and the extension along is located in the notch.

[0020] Further, a plurality of inwardly extending blocking protrusions are arranged at intervals on the upper end of the filter body, a first avoiding slot is arranged on the inner side of the extension along for avoiding the blocking protrusions, the blocking protrusions are located in the first avoiding slot, and a blocking block is arranged on the bucket-shaped body and matches the blocking protrusions, and the blocking block is located below the blocking protrusions.

[0021] Further, a U-shaped buckle is arranged on the bucket-shaped body, the buckle has two oppositely arranged buckle walls, and the blocking block is arranged on the buckle wall away from the axis of the bucket-shaped body.

[0022] Further, a hand pressing block extending outwardly and used for the buckle to achieve clamping or unclamping is arranged on the wall of the buckle away from the axis of the bucket-shaped body, and the hand pressing block is above the blocking convex.

[0023] Further, the buckle is arranged on the side opposite to the inflow side of the upper cover.

[0024] Further, the upper cover is clamped and fixed on the anti-overflow structure, and a mounting flange extending outwardly along the lower end of the cover wall is arranged on the upper cover, the mounting flange covers the extension flange, and the mounting flange is in the slot.

[0025] Further, the mounting flange has a horizontal part above the extension flange and a vertical part outside the extension flange.

[0026] Further, a second avoiding slot for avoiding the blocking convex is arranged on the mounting flange.

[0027] Compared with the prior art, the advantages and positive effects of the present application are as follows: by arranging the jet flow structure, the residues on the plane filter screen are pushed to move in the clockwise or counterclockwise direction, and a cylindrical filter is arranged on the mounting port on the plane filter screen, so that the residues pushed by the jet flow structure enter the cylindrical filter; in order to prevent the residues entering the cylindrical filter from flowing out with the water flow, a flow inlet for the water flow and the residues to pass through is arranged on the upper cover, the jet flow structure pushes the residues on the plane filter screen to move by spraying the water flow, and the residues are close to the flow inlet on the upper cover, after the water flow and the residues pass through the flow inlet and flow into the filter body, the water flow can flow out through the water passing hole; the residues on the plane filter screen enter the cylindrical filter, which is convenient for cleaning the residues after washing is completed, and improves the cleaning efficiency.

[0028] Other features and advantages of the present application will become more apparent after reading the specific embodiments of the present application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0030] Figure 1 is a structural schematic view of an embodiment of the dish washing machine proposed in the present application;

[0031] Figure 2 is Figure 1 a schematic view of part of the structure;

[0032] Figure 3 ​Figure 2 Top view schematic diagram of the middle spray structure;

[0033] Figure 4 For Figure 2 Bottom view schematic diagram of the middle spray structure;

[0034] Figure 5 For Figure 1 Schematic diagram of the middle A-A sectional structure;

[0035] Figure 6 For Figure 5 Schematic diagram of the enlarged structure at the middle cylindrical filter;

[0036] Figure 7 For Figure 6 Schematic diagram of the enlarged structure of the C area;

[0037] Figure 8 For Figure 1 Schematic diagram of the middle B-B sectional structure;

[0038] Figure 9 For Figure 8 Schematic diagram of the enlarged structure at the middle cylindrical filter;

[0039] Figure 10 Schematic diagram of the structure at the inner container bottom sink;

[0040] Figure 11 Schematic diagram of the exploded structure of the cylindrical filter;

[0041] Figure 12 For Figure 11 Schematic diagram of the enlarged structure of the upper cover;

[0042] Figure 13 For Figure 11 Schematic diagram of the enlarged structure of the anti-overflow flow structure;

[0043] Figure 14 For Figure 11 Schematic diagram of the enlarged structure of the filter body;

[0044] Figure 15 For Figure 14 Schematic diagram of the enlarged structure at the blocking rib;

[0045] Figure 16 For Figure 11 Schematic diagram of the structure at another angle;

[0046] Figure 17 For Figure 16 Schematic diagram of the enlarged structure of the filter body. DETAILED DESCRIPTION

[0047] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0048] In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", and the like indicate the positional or locational relationship shown in the drawings, with the direction close to the center being "inner" and vice versa. The terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description and cannot be understood as indicating or implying relative importance; the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0049] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, can also be detachably connected, or integrated; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] Referring to Figures 1-17 , is an embodiment of a dishwasher proposed by the present application, which comprises a shell, an inner container arranged in the shell, the inner container being used for accommodating dishes to be washed, the shell is not shown in the drawings, and the dishwasher further comprises Figure 1 and Figure 2The bottom 10 of the inner container is shown in the figure, and the spray structure 20 is arranged in the inner container to wash the tableware by the water flow, and then the water flow falls on the bottom 10 of the inner container, is filtered by the plane filter screen 30, and then flows into the washing cavity; then the water in the washing cavity is conveyed to the spray structure 20 under the driving of the washing pump 51 to realize one cycle of spraying. The food residues under the spray washing are filtered on the plane filter screen 30 arranged on the bottom 10 of the inner container; in order to collect the residues on the plane filter screen 30 into the cylindrical filter 40, the mounting port 31 is arranged on the plane filter screen 30, and the cylindrical filter 40 is located at the mounting port 31; by arranging the cylindrical filter 40 on the plane filter screen 30, the collection of the residues on the plane filter screen 30 is facilitated, the moving distance of the residues during the collection is shortened, and the collection efficiency and rate are improved. The jet flow structure 21 is further arranged, the jet flow structure 21 sprays the water flow to move the residues on the plane filter screen 30 in the clockwise or counterclockwise direction, and is used for pushing the residues on the plane filter screen 30 into the cylindrical filter 40; the water tank 13 is arranged on the bottom 10 of the inner container, the cylindrical filter 40 passes through the mounting port 31 and is arranged in the water tank 13, and the mounting port 31 is located above the water tank 13. The water tank 13 is in communication with the drainage cavity 14; during the washing process of the dishwasher, 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 to realize the spray cycle.

[0051] Referring to Figure 1 , Figure 5 , Figure 6 , Figure 12 As shown in the figure, the cylindrical filter 40 has the open-top filter body 41 and the upper cover 42 arranged at the open top; the upper cover 42 is the inflow side 425 on the side close to the moving direction of the residues on the plane filter screen 30, the inflow port 426 for the water flow and the residues to pass through is arranged on the inflow side 425 of the upper cover 42, and the water passing hole 427 for the water flow to pass through is arranged on the upper cover 42. The jet flow structure 21 sprays the water flow to move the residues on the plane filter screen 30 in the clockwise direction or in the counterclockwise direction, gradually approaches the inflow side 428, so that the residues enter from the inflow port 426 of the upper cover 42 along with the water flow, the water flow can flow out from the water passing hole 427 of the upper cover 42, the residues are prevented from flowing out along with the water flow, the residues are facilitated to be collected into the plane filter screen 30, and the residues in the plane filter screen are facilitated to enter the cylindrical filter, so that the cleaning efficiency is improved after the washing is completed.

[0052] Referring to Figure 12As shown, the upper cover 42 has a cover body 421 which is inclined downward in the moving direction of the residues on the plane filter screen 30, a cover wall 422 which extends downward along the outer edge of the cover body 421, and a plurality of inflow openings 426 which are circumferentially arranged on the cover wall 422 of the inflow side 425. The cover body 421 is of a plane structure, and has water passing holes 427 which are arranged on the cover body 421 for water flow. The water flow reaching the cover body 421 can flow in or out through the water passing holes 4211. The cover body 421 is inclined, which is to gradually increase the height of the cover wall 422 in the direction close to the outflow side 425, that is, the height of the cover wall 422 is the largest at the outflow side 425, so as to ensure that the inflow openings 426 can have sufficient size, and to ensure the smooth inflow of water flow and residues; and to facilitate the outflow of water flow through the water passing holes 427. Preferably, the included angle between the cover body 421 and the horizontal plane is 4°-8°, and the ratio of the highest height to the lowest height of the cover wall 422 is 2-3.

[0053] Referring to Figures 2-4 As shown, for the jet flow structure 21, it can be a spray nozzle arranged in the inner container, and a rotating water flow is formed by the inclined arrangement of the spray nozzle to give a pushing force to the residues. Preferably, the jet flow structure 21 is arranged on the rotating spray structure 20. In this embodiment, the spray structure 20 is a spray arm which is suspended, and is located on the bottom surface 10 of the inner container, so that the distance between the spray structure 20 and the plane filter screen 30 is small, and the jet flow structure 21 is arranged on the lower end of the spray structure 20 and is inclined downward; during the washing process, the spray structure 20 is in a rotating state, that is, the jet flow structure 21 is also in a rotating state, which is to ensure that the water flow jetted out by the jet flow structure 21 can form a clockwise or counterclockwise rotating water flow, most of which should flow downward through the plane filter screen 30, and the water flow jetted out by the jet flow structure 21 can definitely give a pushing force to the residues on the plane filter screen 30 to move clockwise or counterclockwise; and the rotation of the jet flow structure 21 can make the jet flow structure 21 approach the plane filter screen 30 at each position in the circumferential direction, so as to give a large pushing force to the plane filter screen 30 at each position, and to ensure that the residues on the plane filter screen 30 at different positions can be pushed. For example, if the spray structure 20 rotates clockwise, the residues are pushed to move clockwise; and if the spray structure 20 rotates counterclockwise, the residues are pushed to move counterclockwise.

[0054] In other embodiments, the jet flow structure 21 can be a plurality of spray nozzles which are fixed in the inner container, and an inclined water flow is formed by the inclined arrangement of the spray nozzles to give a pushing force to the residues on the plane filter screen 30 to move clockwise or counterclockwise.

[0055] Referring to Figure 5 and Figure 13As shown, in order to further avoid the residue flowing into the filtering body 41 from flowing out with the water flow, the cylindrical filter 40 is further provided with an anti-overflow structure 43 for stopping the residue flowing into the filtering body 41 from flowing out with the water flow; the anti-overflow structure 43 is located in the filtering body 41 and below the upper cover 42. The anti-overflow structure 43 has a bucket-shaped body 431 for guiding the water flow and residue flowing into the filtering body 41 to flow downward, and a through opening 432 is formed at the center of the bucket-shaped body 431, and the bucket-shaped body 431 is inclined downward in the direction of radially inward. After the water flow and residue flowing into the cylindrical filter 40 from the inflow side 425 of the upper cover 42 reach the bucket-shaped body 431, they move along the inclined surface of the bucket-shaped body 431 to the through opening 432 under the action of the inertia of forward movement and gravity, and fall into the filtering body 41 below the bucket-shaped body 431 through the through opening 432; preferably, the inner diameter of the filtering body 41 is 3-5 times the diameter of the through opening 432, because the size of the through opening 432 is relatively small relative to the size of the filtering body 41, so that the residue falling from the through opening 432 is not easy to pass through the through opening 432; even if part of the residue continues to move forward under the action of the inertia of forward flow after reaching the bucket-shaped body 431, when it reaches the water flow hole 427, the residue is stopped by the filter and will not flow out of the cylindrical filter 40, and will fall again on the bucket-shaped body 431 under the impact of the water flow.

[0056] Referring to Figures 11-17 As shown, the assembly between the components of the cylindrical filter 40 is illustrated, which includes the filtering body 41, the upper cover 42, and the anti-overflow structure 43, wherein the anti-overflow structure 43 is clamped and fixed on the filtering body 41, and the upper cover 42 is clamped and fixed on the anti-overflow structure 43.

[0057] The anti-overflow structure 43 is clamped and fixed on the filtering body 41, and the filtering body 41 is a cylindrical structure with an upper opening, and has a filtering support 416 and a filter screen 415 arranged on the filtering support 416, and an upper end flange 411 extending radially outward is arranged at the upper end of the filtering body 41; an extension flange 433 extending outward is arranged at the upper edge of the bucket-shaped body 431, and a slot 412 for accommodating the extension flange 433 is formed in the inner side of the upper end flange 411 of the filtering body 41, and the extension flange 433 is located in the slot 412. By locating the extension flange 433 in the slot 412, the freedom of the anti-overflow structure 43 relative to the filtering body 41 in moving downward and moving forward, backward and left and right is limited.

[0058] In order to further limit the upward movement and rotation freedom of the anti-overflow structure 43, a plurality of inwardly extending blocking protrusions 413 are arranged at the upper end of the filtering body 41 along 411, the radial dimension of the blocking protrusions 413 is greater than the radial dimension of the slot 412; a first avoiding slot 434 for avoiding the blocking protrusions 413 is arranged on the inner side of the extending along 433, the blocking protrusions 413 are located in the first avoiding slot 434, which can limit the rotational movement of the anti-overflow structure 43. A blocking block 435 matching the blocking protrusions 413 is arranged on the bucket-shaped body 431, the blocking block 435 is located below the blocking protrusions 413, which is used to limit the upward movement of the anti-overflow structure 43.

[0059] In order to realize the installation of a plurality of blocking blocks 435 below the blocking protrusions 413, at least one U-shaped buckle 436 is arranged on the bucket-shaped body 431, the buckle 436 has two oppositely arranged clamping walls, the blocking block 435 is arranged on the clamping wall of the buckle 436 away from the axis of the bucket-shaped body 431. An outwardly extending hand pressing block 4361 is arranged on the clamping wall of the buckle 436 away from the axis of the bucket-shaped body 431, the hand pressing block 4361 is used for the buckle 436 to realize clamping or unclamping, and the hand pressing block 4361 is located above the blocking protrusions 413; by pressing the hand pressing block 4361 inwardly, the clamping wall on the outer side of the buckle 436 moves inwardly, so that the blocking block 435 on the buckle 436 is separated from the limitation of the blocking protrusions 413, realizing the clamping and fixing of the anti-overflow structure 43 to the filtering body 41, or the separation from the filtering body 41. It is preferred that the buckle 436 is arranged on the side opposite to the inflow side 425 of the upper cover 42.

[0060] The upper cover 42 is clamped and fixed on the anti-overflow structure 43, and an installation along 423 extending outwardly along the lower end of the cover wall 422 is arranged on the upper cover 42, the installation along 423 covers the extending along 433, and the installation along 423 is located in the slot 412. The installation along 423 has a horizontal part located above the extending along 433 and a vertical part located on the outer side of the extending along 433. A second avoiding slot 424 for avoiding the blocking protrusions 413 is arranged on the installation along 423.

[0061] Referring to Figure 5 , Figure 9 and Figure 14 , a concave water tank 13 is arranged at the bottom of the inner container 10; the cylindrical filter 40 is arranged in the water tank 13, and a drain port 131 communicating with the drain cavity 14 is arranged on the water tank 13, and a through port 414 communicating with the drain port 131 is arranged on the cylindrical filter 40. By arranging the through port 414 on the cylindrical filter 40 communicating with the drain port 131, the water in the cylindrical filter 40 can directly flow into the drain port 131 without passing through the filter screen on the cylindrical filter 40, and then flow into the drain cavity 14, thereby avoiding the blockage of the filter screen by small residues, ensuring the difficulty of suction of the drain pump 52, ensuring the water supply to the drain pump 52, and realizing the normal drainage of the dishwasher.

[0062] A lower concave filter cavity 16 is arranged on the bottom 10 of the inner container. A planar filter screen 30 is arranged on the upper side of the filter cavity 16. The filter cavity is in communication with the water tank 13 and the washing cavity. During the washing process of the dishwasher, the spray structure 20 is arranged in the inner container. The dishes are washed by the water flow from the spray structure 20. Then the water flows to the bottom 10 of the inner container, is filtered by the planar filter screen 30, flows into the filter cavity, and then reaches the washing cavity. Then the water in the washing cavity is pumped into the spray structure 20 by the driving of the washing pump 51, to realize a cycle of spraying. During the draining process of the dishwasher, part of the water in the bottom 10 of the inner container is filtered by the planar filter screen 30, flows into the filter cavity, and then flows into the water tank 13, and then flows into the draining cavity 14 through the draining port 131. Another part of the water in the bottom 10 of the inner container flows into the cylindrical filter 40 in the water tank. The water in the cylindrical filter 40 can reach the water tank 13 through the filter screen 415, or directly flow into the draining cavity 14 through the opening 414 and the draining port 131. The washing water in the draining cavity 14 is drained out of the dishwasher by the draining pump 52.

[0063] Referring to Figure 14 and Figure 17 , the cylindrical filter 40 has an upper opening filter body 41. The filter body 41 has a filter support 416 and a filter screen 415 arranged on the filter support 416. The filter support 416 is provided with a support portion 417, and the opening 414 is arranged on the support portion 417. The support portion 417 is arranged to facilitate the arrangement of the opening 414, so that the opening 414 has a certain structural strength.

[0064] Referring to Figure 14 and Figure 15 , in order to avoid the residues in the filter body 41 from flowing out of the opening 414, especially to avoid the residues with large size from flowing out, which may cause the blockage of the pipeline or the winding of the draining pump 52, a plurality of blocking ribs 419 are arranged in the filter body 41 to block the residues from flowing out of the opening 414. The blocking ribs 419 are arranged in a spaced manner with the opening 414. When the washing water and the residues in the filter body 41 flow to the opening 414, most of the residues are blocked by the blocking ribs 419, and the fine particles of the residues can still flow out of the opening 414 with the water flow. When the size of the residues is greater than the size between the blocking rib 419 and the edge of the opening 414 or the size between the adjacent two blocking ribs 419, the residues are blocked. Specifically, a plurality of blocking ribs 419 are arranged on the bottom surface of the filter body 41 in a radial direction and extend upward. The residues are blocked between the adjacent two blocking ribs 419 or between the blocking rib 419 and the support portion 417. The blocking rib 419 has a vertical surface 4191 close to the opening 414 and an arc surface 4192. One end of the arc surface 4192 is connected with the vertical surface 4191, and the other end is connected with the bottom surface of the filter body 41.

[0065] Referring toFigure 9 As shown, a connecting pipe 15 is arranged between the water tank 13 and the drainage cavity 14, and a connecting cavity 132 is arranged on the water tank 13, so as to realize the sealed connection between the water tank 13 and the connecting pipe 15 and ensure the communication between the drainage opening 131 and the connecting pipe 15; the connecting cavity 132 is provided with a drainage opening 131 on the side wall of the side close to the cylindrical filter 40, and is provided with a connecting opening 133 on the side wall of the side away from the cylindrical filter 40, the connecting opening 133 is in sealed connection with the connecting pipe 15, and the end of the connecting pipe 15 penetrates through the connecting opening 133 and extends into the connecting cavity 132.

[0066] In order to realize the communication between the overflow opening 414 and the drainage opening 131, the connecting cavity 132 is arranged on the side wall of the water tank 13, and the support portion 417 is arranged adjacent to the side wall at the drainage opening 131 of the connecting cavity 132; that is, the drainage opening 131 and the overflow opening 414 are arranged adjacent to each other, so that the water flow flowing out of the overflow opening 414 can directly reach the drainage opening 131.

[0067] The support portion 417 and the side wall at the drainage opening 131 are in sealed connection, and a sealing ring 418 is arranged on the support portion 417 and sleeved on the outer side of the overflow opening 414, the sealing ring 418 is also sleeved on the outer side of the drainage opening 131, the sealing ring 418 seals the support portion 417 and the side wall at the drainage opening 131, so that the water flowing into the drainage opening 131 must pass through the overflow opening 414; that is, the washing water in the filtering body 41 passes through the overflow opening 414 and then flows into the connecting cavity 132 through the drainage opening 131, and the washing water in the water tank 13 also needs to pass through the filter screen 415 and flow into the filtering body 41 and then flow out of the overflow opening 414; the washing filter screen 415 has the effect of flushing the filter screen 415, which can flush away the small residues adhered to the inner side of the filter screen 15, and is beneficial to the self-cleaning of the cylindrical filter 40.

[0068] Referring to Figure 14 and Figure 17 As shown, in order to fix the sealing ring 418, an annular accommodating groove 4171 is arranged on the support portion 417, and the sealing ring 418 is fixed in the accommodating groove 4171, the size of the sealing ring 418 protruding from the outer end surface of the support portion 417 is greater than the size of the outer end surface of the support portion 417 away from the sealing cavity 132; that is, the sealing ring 418 is squeezed between the support portion 417 and the side wall at the drainage opening 131, so as to realize the direct sealing of the two.

[0069] In order to further ensure the convenient installation of the filtering body 41 into the water tank 13 and avoid the disengagement of the sealing ring 418, the end surface of the support portion 417 close to the drainage opening 414 is outwardly inclined in the upward direction, and the side wall at the drainage opening 414 is outwardly inclined in the upward direction; the convenient operation of the installation of the filtering body 41 into the water tank 13 is ensured, and the early deformation of the sealing ring 418 is avoided. The water tank 13 has a structure of wide at the top and narrow at the bottom.

[0070] In other embodiments, the support part 417 and the side wall at the drain outlet 131 may be arranged adjacent to each other, and there may be a water flow gap between the support part 417 and the side wall at the drain outlet 131 for water to flow through. Water in the water tank 13 can flow into the drain outlet 131 through the water flow gap, and washing water in the filter body 41 can flow into the drain outlet 131 through the inlet 414.

[0071] See Figure 9 , Figure 10 and Figure 17 As shown, the cylindrical filter 40 is fixedly installed with the water tank 13. A protruding positioning post 134 is located at the center of the water tank 13, and a positioning groove 410 matching the positioning post 134 is located at the bottom of the filter body 41. The positioning post 134 is located within the positioning groove 410. When the cylindrical filter 40 is installed in the water tank 13, it is positioned by placing the cylindrical filter 40 downwards into the water tank 13, causing the positioning post 134 to be located within the positioning groove 410. Then, by rotating the cylindrical filter 40, the claws on the outside of the filter body 41 engage with the clips on the water tank 13, thus fixing the cylindrical filter 40 in place.

[0072] A positioning protrusion 1341 protrudes radially outward on the positioning post 134, and a recess 4101 extends radially outward within the positioning groove 410. When the filter body 41 rotates and engages with the water tank 13, the positioning post 134 is located within the positioning groove 410, and the positioning protrusion 1341 is rotatably located within the recess 4101. By setting the positioning protrusion 1341 and the recess 4101, the circumferential position of the filter body 41 during installation is further defined, ensuring that the claws on the outside of the filter body 41 are adjacent to the clips of the water tank 13, and ensuring that when the filter body 41 rotates, the positioning protrusion 1341 rotates within the recess 4101, thereby achieving engagement between the claws on the outside of the filter body 41 and the clips of the water tank 13.

[0073] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by the present invention.

Claims

1. A dishwasher, characterized in that The utility model provides a dish washing machine, which comprises: a container for containing dishes to be washed; a flat filter screen provided on the bottom of the container, wherein an installation opening is formed on the flat filter screen; a cylindrical filter provided on the bottom of the container, wherein the cylindrical filter is located at the installation opening; a jet structure for spraying water flow to push the residues on the flat filter screen to move in a clockwise or counterclockwise direction; the cylindrical filter has an open-top filter body, an upper cover provided at the open top, wherein the upper cover is a flow-in side near the moving direction of the residues on the flat filter screen, a flow inlet for water flow and residues to pass through is formed on the flow-in side of the upper cover, and a water passing hole for water flow to pass through is formed on the upper cover; the cylindrical filter further has an anti-overflow structure for preventing the residues flowing into the filter body from flowing out with the water flow, wherein the anti-overflow structure is located in the filter body; the anti-overflow structure has a bucket-shaped body for guiding the water flow and residues flowing into the filter body to flow downward; the upper cover has a cover body that is inclined downward in the moving direction of the residues on the flat filter screen, a cover wall that extends downward along the outer edge of the cover body, and a plurality of flow inlets that are circumferentially arranged on the cover wall of the flow-in side; the cover body is a flat structure, a water passing hole for water flow to pass through is formed on the cover body, and water flow reaching the cover body can flow in or out through the water passing hole; the residues enter the upper cover from the flow inlet, and the water flow flows out from the water passing hole, thereby avoiding the residues flowing out with the water flow and enabling the residues on the flat filter screen to enter the cylindrical filter.

2. The dishwasher according to claim 1, characterized in that a rotatable spray arm is arranged in the container, and a downwardly inclined jet structure is arranged on the spray arm.

3. The warewashing machine of claim 1, wherein, the anti-overflow structure is located below the upper cover.

4. The dishwasher according to any one of claims 1 to 3, characterized in that a through opening is formed at the center of the bucket-shaped body, and the bucket-shaped body is inclined downward in a direction that is radially inward.

5. The warewash machine of claim 4, wherein, an extension ridge that extends outward is arranged on the upper edge of the bucket-shaped body, and a slot for accommodating the extension ridge is formed on the inner side of the upper end of the filter body, and the extension ridge is located in the slot.

6. The warewash machine of claim 5, wherein, a plurality of inwardly extending blocking protrusions are arranged at intervals on the upper end of the filter body, a first avoiding slot for avoiding the blocking protrusions is formed on the inner side of the extension ridge, the blocking protrusions are located in the first avoiding slot, and a blocking block that matches the blocking protrusions is arranged on the bucket-shaped body and located below the blocking protrusions.

7. The warewash machine of claim 6, wherein, a U-shaped buckle is arranged on the bucket-shaped body, the buckle has two oppositely arranged buckle walls, and the blocking block is arranged on the buckle wall that is away from the axis of the bucket-shaped body.

8. The warewash machine of claim 7, wherein, a hand pressing block that extends outward and is used for the buckle to be engaged or disengaged is arranged on the buckle wall that is away from the axis of the bucket-shaped body, and the hand pressing block is located above the blocking protrusions.

9. The warewash machine of claim 5, wherein, the upper cover is engaged and fixed on the anti-overflow structure, an installation ridge that extends outward along the lower end of the cover wall of the upper cover is arranged on the upper cover, the installation ridge covers the extension ridge, and the installation ridge is located in the slot.

Images