CN211243228U - Dish washing machine - Google Patents

Abstract

The utility model discloses a dish washing machine, which comprises a washing chamber, a micro filter, a coarse filter and a fine filter, wherein the bottom of the washing chamber is provided with a water collecting tank internally provided with a circulating water outlet, and the bottom of the water collecting tank is provided with a slag collecting tank internally provided with a sewage outlet; the micro filter is arranged at the bottom of the washing chamber and covers the water collecting tank, and a mounting opening is formed in the micro filter; the coarse filter is arranged at the mounting opening and comprises a first filtering part and a second filtering part, wherein the first filtering part is positioned on one side of the micro filter facing the outside of the water collecting tank, the second filtering part is positioned on one side of the micro filter facing the inside of the water collecting tank, and filtering cavities which are communicated up and down are arranged in the first filtering part and the second filtering part; the fine filter is arranged between the micro filter and the water collecting tank; the dishwasher bottom forms primary filter district, secondary filter district and tertiary filter district, realizes tertiary filtration to can distinguish the filter residue type well, with the convenience to the filter residue difference processing of equidimension not, improve dishwasher convenience, promote tableware cleaning.

Description

Dish washing machine

Technical Field

The utility model belongs to the technical field of kitchen domestic appliance, especially, relate to a dish washer.

Background

As the standard of living increases, more and more people do not want to spend too much time washing kitchen dishes, and the use of dishwashers in everyday households is becoming more and more common. A dishwasher generally has a washing chamber and a water collection sump provided at a lower portion of the washing chamber, the water collection sump collecting water used for washing dishes and recycling or discharging the collected water; the sump is also typically provided with a filtering system for filtering the washing water and collecting food waste to avoid food waste from being introduced into the circulating pump for circulating the water and from interfering with the operation of the circulating pump.

However, the filtering system of the existing dish-washing machine is imperfect, and a plurality of coarse filtering-fine filtering structures on the market cannot well distinguish the types of filter residues; some structure is not well designed, small filter residues can block a fine filter screen, the water absorption of a water inlet of the circulating pump is seriously influenced, the phenomenon of insufficient flow of the circulating pump is generated, the circulating pump is damaged, and the water cannot be washed cleanly; and the excessive filter residue is also discharged by the drainage pump, so that the drainage pump is blocked and even damaged, and the service life and the user experience are influenced.

The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims at providing a dish washer realizes tertiary filtration to can distinguish the filter residue type well, with convenient filter residue difference to equidimension not handles, improve dish washer convenience of use, promote tableware cleaning performance, clean health more ensures dish washer safe handling, dish washer job stabilization, safe and reliable, and energy-concerving and environment-protective satisfies user's user demand, effectively promotes user experience.

In order to achieve the above object, the present invention provides a dish washing machine, which is characterized in that the dish washing machine comprises: the washing device comprises a washing chamber, a water collecting tank and a slag collecting tank, wherein the bottom of the washing chamber is provided with the water collecting tank, a circulating water outlet is formed in the water collecting tank, the bottom of the water collecting tank is also provided with the slag collecting tank, and a sewage discharge outlet is formed in the slag collecting tank; the micro filter is arranged at the bottom of the washing chamber and covers the water collecting tank, and a mounting opening is formed in the micro filter; the coarse filter is arranged at the mounting opening and comprises a first filtering part and a second filtering part, the first filtering part is positioned on one side, facing the outside of the water collecting tank, of the micro filter, the second filtering part is positioned on one side, facing the inside of the water collecting tank, of the micro filter, and filtering cavities which are communicated up and down are arranged in the first filtering part and the second filtering part; the fine filter is arranged between the micro filter and the water collecting tank, one end of the fine filter is communicated with the second filtering part, and the other end of the fine filter covers the slag collecting tank; wherein a primary filtering area is formed in the filtering cavity; the second filtering part, the fine filter and the slag collecting groove form a secondary filtering area, and the secondary filtering area is communicated with the sewage draining outlet; the micro filter, the fine filter and the water collecting tank are enclosed to form a three-stage filtering area, and the three-stage filtering area is communicated with the circulating water outlet.

In one example, the coarse filter is located the end opening of first filter house one end, just the opening is higher than the dish washer during operation the surface of water in the washing chamber, first filter house with the lateral wall of second filter house sets up the filter residue hole of a plurality of rectangular shapes along circumference interval, the filter residue hole is followed lateral wall top-down parallel arrangement, just the filter residue hole length of first filter house is greater than the filter residue hole length of second filter house.

In one example, the first filter portion has an outer diameter greater than an outer diameter of the second filter portion, and the coarse filter further includes a coarse filter ramp connecting the first filter portion and the second filter portion.

In one example, the rough filtering inclined plane is provided with inclined plane filtering holes.

In one example, the micro filter is a plane screen, and when the coarse filter is installed at the installation opening, the micro filter is sunken towards the inside of the water collecting tank to form a screen inclined surface inclined towards the installation opening.

In one example, the coarse filter ramp and the screen ramp are smoothly transitionally connected.

In one example, the second filter part passes through the mounting opening and is fixedly connected with the inner wall of the water collecting tank; the fine filter is nested on the periphery of the second filtering part, and the bottom of the fine filter is abutted to the inner wall of the water collecting tank around the slag collecting tank.

In one example, the bottom of the water collecting tank is provided with an annular rib around the slag collecting tank, and the bottom of the fine filter is positioned on the inner side of the annular rib and is abutted against the bottom of the water collecting tank.

In one example, the bottom of the water collecting tank is formed with a step around the slag collecting tank, and the bottom of the fine filter abuts against the step; the outer periphery of the step part is also provided with a step inclined plane.

In one example, the circulating water outlet is positioned on the side wall of the water collecting tank, the sewage outlet is positioned at the bottom of the slag collecting tank, and the slag collecting tank and the water collecting tank are formed by split molding.

Through the utility model provides a dish washer can bring following beneficial effect:

1. coarse filter, fine filter and microfilter constitute tertiary filtration system, realize tertiary filtration, filter food waste step by step, and divide into three filtration area with the filter space, the filter residue can be distributed into the triplex, can distinguish the filter residue type well, with the convenience to the filter residue difference processing of equidimension not, avoid food waste to be introduced into the circulating pump, avoid disturbing the operation of circulating pump, effectively prolong circulating pump life, and promote tableware cleaning, cleaner health, improve dish washer convenience in use, ensure dish washer safe handling, dish washer job stabilization, safe and reliable, energy-concerving and environment-protective, satisfy user demand, effectively promote user experience.

2. The opening is higher than the surface of water in the washing chamber of dishwasher during operation to prevent that the oversized food waste from getting into the filter chamber through the opening, in order to realize first order filtration, guarantee the filter effect.

3. The coarse filtration inclined plane has the guide effect, makes things convenient for food waste to slide the gathering bottom the filter chamber, prevents that food waste from piling up and blockking up the coarse filter in the junction of first filter house and second filter house, guarantees the filter effect, and user experience is better.

4. The inclined plane filtration pore can play the effect of enlarging the area of the water flow passage, and when a large amount of food residues enable accumulated filter residues at the bottom of the filter cavity to be too much, the water flow channel is not large enough and is completely blocked, so that the filtering effect is ensured, and the user experience is improved.

5. The filter screen inclined plane has the guide effect, makes things convenient for food waste to the gathering of installing port slip, prevents that food waste from piling up on the plane filter screen and blockking up the microfilter, guarantees the filter effect, and user experience is better.

6. The annular convex rib surrounds the bottom of the fine filter, can play a role in blocking the filter residue in the secondary filter area from leaking from the bottom of the fine filter to enter the tertiary filter area, and plays a role in further enhancing the sealing effect, the structure is simple and reasonable, the filtering effect is effectively guaranteed, and the user experience is better.

7. The stepped part surrounds the bottom of the fine filter, can also play a role in preventing filter residues in the secondary filtering area from leaking from the bottom of the fine filter to enter the tertiary filtering area, plays a role in further enhancing the sealing effect, has a simple and reasonable structure, and effectively ensures the filtering effect; the step inclined plane can allow water flow and micro filter residues to be left naturally, and filter residues are prevented from remaining on the outer side of the annular convex rib; in the installation of coarse filter and fine filter, the step inclined plane can also play the effect of guiding orientation, and the installation is swift convenient, and user experience is better.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

FIG. 1 is a schematic structural diagram of a dishwasher according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a dishwasher according to another embodiment of the present invention;

fig. 3 is a schematic perspective view of a bottom of a washing chamber according to an embodiment of the present invention;

fig. 4 is a top view of the bottom of the washing chamber provided by the embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view taken along line A-A in FIG. 4;

fig. 6 is a front view of the bottom of the washing chamber provided by the embodiment of the present invention;

fig. 7 is a schematic perspective view of a micro filter according to an embodiment of the present invention;

fig. 8 is a left side view of a micro-filter according to an embodiment of the present invention;

fig. 9 is a schematic perspective view of a coarse filter according to an embodiment of the present invention;

fig. 10 is a schematic perspective view of another view angle of the coarse filter according to the embodiment of the present invention;

fig. 11 is a front view of a coarse filter according to an embodiment of the present invention;

fig. 12 is a left side view of a coarse filter provided in an embodiment of the present invention;

fig. 13 is a top view of a coarse filter according to an embodiment of the present invention;

fig. 14 is a cross-sectional view of a coarse filter according to an embodiment of the present invention;

fig. 15 is a schematic perspective view of a fine filter according to an embodiment of the present invention.

Detailed Description

In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

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

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. In the description herein, references to the description of the terms "an aspect," "some aspects," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the aspect or example is included in at least one aspect or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same solution or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more aspects or examples.

For convenience of description, the terms "front", "rear", "left", "right", "upper" and "lower" will be used hereinafter with reference to the orientation of the dishwasher relative to the user.

As shown in fig. 1 to 14, an embodiment of the present invention provides a dishwasher including a washing chamber 1, a micro filter 2, a coarse filter 3, and a fine filter 4.

Wherein the washing chamber 1 is used for accommodating tableware to be washed, the bottom of the washing chamber 1 is provided with a water collecting tank 11, and the water collecting tank 11 is concavely formed at the bottom of the washing chamber 1 to collect water used in washing; a circulating water outlet 12 is formed in the water collecting tank 11, and the circulating water outlet 12 is communicated with a circulating pump for circulating water; the bottom of the water collecting tank 11 is also provided with a slag collecting tank 13, a sewage discharge outlet 14 is arranged in the slag collecting tank 13, and the sewage discharge outlet 14 is communicated with a drainage pump for draining water.

The micro-filter 2 is installed at the bottom of the washing chamber 1 and covers the water collection sump 11, the micro-filter 2 and at least a part of the side wall and the bottom wall of the water collection sump 11 define a filtering space for filtering the washing water and collecting food residues generated when the dishes are washed; the micro filter 2 has the smallest filtering size, and the micro filter 2 is provided with a mounting opening 21.

The coarse filter 3 is arranged at the mounting opening 21, the coarse filter 3 comprises a first filter part 31 positioned at one side of the micro filter 2 facing the outside of the water collecting tank 11 and a second filter part 32 positioned at one side of the micro filter 2 facing the inside of the water collecting tank 11, and the first filter part 31 and the second filter part 32 are internally provided with filter cavities 33 which are communicated up and down; the filter chamber 33 forms a primary filter area 100. The first filtering part 31 protrudes outside the filtering space, and the filtering size of the first filtering part 31 is the largest, so as to block food debris with overlarge size, such as large bones, and the like, outside the filtering space, thereby realizing the first-stage filtering. The washing water and food wastes passing through the first filtering portion 31 enter the primary filtering region 100, the second filtering portion 32 has a filtering size second to that of the first filtering portion 31 for screening food wastes having a larger size that may clog the drain pump, and the screened larger filter residues are collected in the filtering chamber 33, thereby implementing the second filtering. Too big filter residue is not discharged by the drain pump, prevents that the drain pump from blockking up and even damaging the drain pump, effectively prolongs drain pump life, promotes user experience. In this embodiment, the coarse filter 3 can be removed from the mounting opening 21 and the filter residue collected in the filter chamber 33 can be cleaned manually.

The fine filter 4 is provided between the micro filter 2 and the water collection tank 11, and has one end communicating with the second filter unit 32 and the other end covering the slag collection tank 13. The second filtering part 32, the fine filter 4 and the slag collecting groove 13 enclose a secondary filtering area 200, and the secondary filtering area 200 is communicated with the sewage draining outlet 14. Washing water and food residues passing through the second filtering part 32 enter the secondary filtering area 200, the filtering size of the fine filter 4 is smaller than that of the second filtering part 32 and larger than that of the micro filter 2, so as to be used for screening the food residues with smaller size, and the screened smaller filter residues in the secondary filtering area 200 fall into the residue collecting groove 13, so that the third-stage filtering is realized; the smaller filter residue collected in the residue collection tank 13 can be discharged directly from the drain pump through the drain outlet 14. Less filter residue of collecting in the collection sediment groove 13 is blocked by the cell wall, is difficult to be sucked up and block up fine filter 4 by the circulating pump, avoids influencing the circulating pump and absorbs water through circulating water outlet 12, prevents the not enough phenomenon of circulating pump flow, avoids haring the circulating pump, promotes user experience. In one embodiment, the highest height of the notch of the slag collecting groove 13 is not higher than the lowest height of the circulating water outlet 12, so that the filter residue is further prevented from being pumped up by the circulating pump.

The micro-filter 2, the fine filter 4 and the water collecting tank 11 enclose a three-stage filtering area 300, the three-stage filtering area 300 is communicated with a circulating water outlet 12, and water in the three-stage filtering area 300 is sucked away by a circulating pump to realize circulating cleaning. Washing water and food waste through fine filter 4 get into tertiary filtration district 300, only remain the miniature filter residue that the size is little in tertiary filtration district 300, and miniature filter residue can be filtered secondary filtration district 200 gradually at abluent in-process many times in addition to discharged by the drain pump, avoid food waste to be introduced into the circulating pump, avoid disturbing the operation of circulating pump, effectively prolong circulating pump life, tableware washs cleaner moreover, user experience is better.

Thereby coarse filter 3, fine filter 4 and microfilter 2 constitute tertiary filtration system, realize tertiary filtration, filter food waste step by step, and divide into three filtration region with the filtration space, the filter residue can be distributed into the triplex, can distinguish the filter residue type well, with the convenience to the filter residue difference processing of equidimension not, improve dish washer convenience of use, promote tableware cleaning performance, cleaner health, ensure dish washer safe handling, dish washer job stabilization, safe and reliable, energy saving and environmental protection, satisfy user's user demand, effectively promote user experience.

Specifically, in one embodiment, as shown in fig. 1, 2 and 9-14, the coarse filter 3 is provided with an end opening 34 at one end of the first filter portion 31, and the opening 34 is used for pouring out filter residue collected in the filter cavity 33; and the opening 34 is higher than the water level in the washing chamber 1 when the dishwasher is in operation, so as to prevent food residues with oversized sizes from entering the filter cavity 33 through the opening 34, so as to realize the first stage of filtering and ensure the filtering effect. A plurality of strip-shaped filter residue holes 35 are formed in the side walls of the first filtering part 31 and the second filtering part 32 at intervals along the circumferential direction, and the filter residue holes 35 are arranged in parallel from top to bottom along the side walls of the first filtering part 31 and the second filtering part 32; and the length of the filter residue hole of the first filtering part 31 is greater than that of the second filtering part 32, the structure is simple, the manufacturing is convenient, the cost is low, the appearance is attractive, and the user experience is better. In this embodiment, the sidewall of the first filter portion 31 is not partially covered by the slag hole 35 to form the holding portion 311, and the strength of the first filter portion 31 can be enhanced, so that the coarse filter 3 can be conveniently held during installation, and the user experience is better.

In another embodiment, not shown, the end of the coarse filter 3 at one end of the first filter portion 31 may also be closed, so that the end of the first filter portion 31 may be located below the water level in the washing chamber 1 when the dishwasher is in operation. In the present embodiment, the coarse filter 3 may also have a flap for opening or closing the filter chamber 33.

Specifically, the outer diameter of the first filter part 31 is larger than the outer diameter of the second filter part 32, and the coarse filter 3 further includes a coarse filter slope 36 connecting the first filter part 31 and the second filter part 32. The rough filtering inclined plane 36 has a guiding function, so that food residues can slide and gather at the bottom of the filtering cavity 33, the food residues are prevented from being accumulated at the joint of the first filtering part 31 and the second filtering part 32 to block the rough filter 3, the filtering effect is ensured, and the user experience is better.

Specifically, the inclined plane filtering holes 361 are formed in the rough filtering inclined plane 36, the inclined plane filtering holes 361 can play a role in enlarging the area of a water flow passage, and when a large amount of food residues enable accumulated filter residues at the bottom of the filtering cavity 33 to be too many, a water flow channel is not large enough and is completely blocked, so that the filtering effect is guaranteed, and the user experience is improved. In the present embodiment, the size of the inclined filter hole 361 is the same as the size of the filter residue hole 35 of the second filter part 32.

Specifically, the terminal surface that coarse filter 3 is located second filter house 32 one end is formed with bellied protruding awl 37 towards filter chamber 33, and protruding awl 37 can make the filter residue of collecting in the filter chamber 33 to the outer fringe diffusion, plays the effect of preventing the filter residue and piling up, guarantees the filter effect, and user experience is better. Correspondingly, the convex cone 37 can be provided with convex cone filtering holes 371 to enlarge the area of the water flow path; the size of the convex conical filter hole 371 is the same as the size of the filter residue hole 35 of the second filter part 32.

Specifically, as shown in fig. 1, 2, and 7 to 14, the microfilter 2 is a flat screen, and when the coarse filter 3 is attached to the attachment opening 21, the microfilter 2 is recessed into the water collection tank 11 to form a screen slope 22 inclined toward the attachment opening 21. Filter screen inclined plane 22 has the guide effect, makes things convenient for food waste to the gathering of the 21 slip of installing port, prevents that food waste from piling up on the plane filter screen and blockking up microfilter 2, guarantees the filter effect, and user experience is better.

In a specific embodiment, the planar filter screen has elasticity in a direction perpendicular to the plane of the filter screen, the inner wall of the mounting opening 21 extends radially inward to form an annular blocking rib 211, and in order to increase the strength of the blocking rib 211, the blocking rib 211 is bent radially away from the center to form a hem; the outer side of the first filter portion 31 of the coarse filter 3 is provided with a blank holder 312 formed to extend radially outward. The planar filter screen is press-fitted on the water collection sump 11 through the coarse filter 3, and the blank holder 312 contacts and presses the retaining rib 211, so that the planar filter screen is recessed toward the inside of the water collection sump 11, thereby forming the screen inclined surface 22, and at this time, the planar filter screen is in an elastically deformed state.

Specifically, coarse filter inclined plane 36 and filter screen inclined plane 22 all set up to smooth inclined plane, and coarse filter inclined plane 36 and the smooth transition of filter screen inclined plane 22 are connected for food waste slides target position (installing port 21 and filter chamber 33 bottom promptly) more easily, avoids food waste to pile up, guarantees the filter effect, and user experience is better.

Specifically, as shown in fig. 1 to 15, the second filtering portion 32 passes through the mounting opening 21 and is fixedly connected with the inner wall of the water collecting tank 11; thin filter 4 nests and sets up in second filter house 32 periphery, and the inner wall butt of water catch bowl 11 around bottom and the collection sediment groove 13 to enclose into secondary filter district 200 between second filter house 32, thin filter 4 and collection sediment groove 13, prevent that the filter residue in secondary filter district 200 from leaking to tertiary filter district 300 in 4 bottoms of thin filter, play the butt sealed effect, guarantee the filter effect, user experience is better.

In a specific embodiment, a first clamping portion 38 is disposed at the outer side of the bottom of the second filtering portion 32, a water collecting tank clamping portion 15 is disposed at the inner wall of the water collecting tank 11, and the first clamping portion 38 is clamped with the water collecting tank clamping portion 15 in a matching manner, so as to fixedly connect the second filtering portion 32 with the inside of the water collecting tank 11; the first catching portion 38 and the water collecting tub catching portion 15 may be mutually fitted catches.

The fine filter 4 is in a hollow cylinder shape with two open ends, the fine filter 4 comprises a frame 41 and a fine filter screen (not shown in the figure), and the fine filter screen is used for filtering out tiny residues; the frame 41 is formed in a lattice shape to allow the fine filter mesh to maintain a constant shape; one end of the frame 41 is provided with a thin filter clamping part 42, a plurality of second clamping parts 39 are arranged at intervals along the circumferential direction on the outer side of the first filtering part 31, the second filtering part 32 of the thick filter 3 penetrates through the open end part of the thin filter 4, the thin filter 4 is nested and installed on the periphery of the second filtering part 32, and the second clamping parts 39 and the thin filter clamping parts 42 are matched and clamped, so that the thin filter 4 is clamped and fixed on the thick filter 3; the second snap-in portion 39 and the fine filter snap-in portion 42 may be snaps; simple structure is reasonable, reduces the dish washer complexity, and the installation is simple swift convenient more with the dismantlement, and user experience is better.

When the filter is installed, the fine filter 4 and the coarse filter 3 are assembled to form a filter assembly; then, a plane filter screen is placed on the water collecting tank 11, then the second filtering part 32 and the fine filter 4 of the filtering component penetrate through the mounting opening 21 and are opposite to the slag collecting tank 13, and the bottom surface of the blank holder 312 is abutted against the upper end surface of the blocking rib 211; continuing to press the coarse filter 3 to slightly deform the planar filter screen, so that the coarse filter 3 and the water collecting tank 11 are in matched clamping connection with the water collecting tank clamping part 15 through the first clamping part 38; after the clamping is completed, the planar filter screen is pressed on the water collecting tank 11 by the blank holder 312 of the coarse filter 3, and the planar filter screen is in an elastic deformation state. When a user needs to clean the filtering component independently, the filtering component is directly integrally detached from the water collecting tank 11 without additionally detaching the plane filtering net; during installation, the whole filtering component is directly installed in the water collecting tank 11 after penetrating through the installation opening 21, and the installation and the disassembly are simpler and more convenient.

Specifically, in one embodiment, as shown in fig. 1 and 3-5, an annular rib 16 is formed at the bottom of the water collection tank 11 around the slag collection tank 13, and the bottom of the fine filter 4 is located inside the annular rib 16 and abuts against the bottom of the water collection tank 11. The annular convex rib 16 surrounds the bottom of the fine filter 4, can play a role in blocking the filter residue inside the secondary filtering area 200 from leaking out of the bottom of the fine filter 4 to enter the tertiary filtering area 300, plays a role in further enhancing the sealing effect, has a simple and reasonable structure, effectively ensures the filtering effect, and is better in user experience.

In another embodiment, as shown in fig. 2, a step 17 is formed at the bottom of the water collecting tank 1 around the slag collecting tank 13, and the bottom of the fine filter 4 abuts against the step 17. Step portion 17 surrounds the bottom of fine filter 4, can play the effect that blocks that the inside filter residue of second grade filtration district 200 leaks from fine filter 4 bottom and gets into tertiary filtration district 300 equally, plays the effect of further reinforcing sealed effect, and simple structure is reasonable, effectively guarantees the filter effect, and user experience is better. Meanwhile, the periphery of the step part 17 is also provided with a step inclined surface 18, and the step inclined surface 18 can enable water flow and micro filter residues to be naturally left, so that the filter residues are prevented from remaining outside the annular convex rib 16; in the installation process of the coarse filter 3 and the fine filter 4, the step inclined plane 18 can also play a role in guiding and positioning, the installation is fast and convenient, and the user experience is better.

Specifically, as shown in fig. 1 to 6, the circulating water outlet 12 is located on the side wall of the water collecting tank 11, the drain outlet 14 is located at the bottom of the slag collecting tank 13, the slag collecting tank 13 and the water collecting tank 11 are formed by separate molding, and the water collecting tank 11 and the slag collecting tank 13 are connected into a whole during assembly. The slag collecting tank 13 and the water collecting tank 11 are manufactured in a split mode, so that the processing difficulty can be effectively reduced, the production and assembly efficiency is improved, and the production cost is reduced.

In the working process of the dishwasher of the utility model, food residues separated from tableware can slide to the mounting port 21 along the screen inclined plane 22, enter the primary filtering area 100 through the filter residue hole 35 on the first filtering part 31, and fall into the filtering cavity 33 in the second filtering part 32 along the rough filtering inclined plane 36; the filter residue hole 35 of the first filtering part 31 blocks the food residue with overlarge size, such as big bone, etc., outside the coarse filter 3 to realize the first stage filtering; the primary filtration zone 100 is a relatively large filter cake. The food residues continuously enter the secondary filtering area 200 through the residue filtering holes 35 on the second filtering part 32 and fall into the residue collecting tank 13, and the residue collecting tank 13, namely the residue in the secondary filtering area 200, is small residue, so that secondary filtering is realized; because the filter residue is in the residue collecting groove 13, the small filter residue is not easy to be sucked and flutter by the suction force of the circulating pump at the circulating water outlet, the small filter residue is prevented from being sucked and stuck to the fine filter 4, and the water flow rate of the circulating pump is prevented from being influenced. Finally, a small part of small filter residues are blocked by the fine filter 4, and all the small filter residues enter the third-stage filtering area 300 to be micro filter residues, so that third-stage filtering is realized. The water in the third filtering area 300 is sucked by the circulating pump to realize the circulating cleaning.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. A dishwasher, characterized in that the dishwasher comprises:

the washing device comprises a washing chamber, a water collecting tank and a slag collecting tank, wherein the bottom of the washing chamber is provided with the water collecting tank, a circulating water outlet is formed in the water collecting tank, the bottom of the water collecting tank is also provided with the slag collecting tank, and a sewage discharge outlet is formed in the slag collecting tank;

the micro filter is arranged at the bottom of the washing chamber and covers the water collecting tank, and a mounting opening is formed in the micro filter;

the coarse filter is arranged at the mounting opening and comprises a first filtering part and a second filtering part, the first filtering part is positioned on one side, facing the outside of the water collecting tank, of the micro filter, the second filtering part is positioned on one side, facing the inside of the water collecting tank, of the micro filter, and filtering cavities which are communicated up and down are arranged in the first filtering part and the second filtering part; and

the fine filter is arranged between the micro filter and the water collecting tank, one end of the fine filter is communicated with the second filtering part, and the other end of the fine filter covers the slag collecting tank;

wherein a primary filtering area is formed in the filtering cavity; the second filtering part, the fine filter and the slag collecting groove form a secondary filtering area, and the secondary filtering area is communicated with the sewage draining outlet; the micro filter, the fine filter and the water collecting tank are enclosed to form a three-stage filtering area, and the three-stage filtering area is communicated with the circulating water outlet.

2. A dishwasher according to claim 1,

the coarse filter is located the tip opening of first filter house one end, just the opening is higher than the dish washer during operation the surface of water in the washing chamber, first filter house with the lateral wall of second filter house sets up the filter residue hole of a plurality of rectangular shapes along the circumference interval, filter residue hole is followed lateral wall top-down parallel arrangement, just the filter residue hole length of first filter house is greater than the filter residue hole length of second filter house.

3. A dishwasher according to claim 1,

the external diameter of first filter house is greater than the external diameter of second filter house, coarse filter is still including connecting first filter house with the coarse filtration inclined plane of second filter house.

4. A dishwasher according to claim 3,

the rough filtering inclined plane is provided with an inclined plane filtering hole.

5. A dishwasher according to claim 3,

the microfilter is the plane filter screen, coarse filter install in during the installing port, microfilter orientation the catch bowl is inwards sunken, forms the orientation the filter screen inclined plane of installing port slope.

6. A dishwasher according to claim 5,

the rough filtering inclined plane is connected with the filter screen inclined plane in a smooth transition mode.

7. A dishwasher according to claim 1,

the second filtering part penetrates through the mounting opening and is fixedly connected with the inner wall of the water collecting tank;

the fine filter is nested on the periphery of the second filtering part, and the bottom of the fine filter is abutted to the inner wall of the water collecting tank around the slag collecting tank.

8. A dishwasher according to claim 7,

the bottom of the water collecting tank is provided with an annular convex rib around the slag collecting tank, and the bottom of the fine filter is positioned on the inner side of the annular convex rib and is abutted against the bottom of the water collecting tank.

9. A dishwasher according to claim 7,

a step part is formed at the bottom of the water collecting tank around the slag collecting tank, and the bottom of the fine filter is abutted against the step part; the outer periphery of the step part is also provided with a step inclined plane.

10. A dishwasher according to any one of claims 1 to 9,

the circulating water outlet is positioned on the side wall of the water collecting tank, the drain outlet is positioned at the bottom of the slag collecting tank, and the slag collecting tank and the water collecting tank are formed by split molding.

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