Filters for dishwashers

Abstract

The utility model discloses a filtering device for a dishwasher, comprising an inner tank bottom, a water cup, a drain pipe and a washing pipe, and also comprising a slag net, which is passed through from top to bottom and has a filter screen arranged around its side wall, the slag net is connected to the water cup, and the filter screen on the side wall of the slag net divides the space in the water cup into a first channel and a second channel in the water cup, the first channel is used for passing washing water with food residues, the first channel is connected to the drain pipe, and the second channel is used for passing filtered washing water, the second channel is connected to the washing pipe; the slag net is connected to a sealing member, the sealing member is used for sealing a gap between the first channel and the second channel, and the effect of allowing filtered clean washing water to circulate to the inner tank of the dishwasher through a washing pump can be achieved; the sealing member seals the gap between the first channel and the second channel, and can effectively prevent food residues generated during filtration from leaking into the clean washing water to cause pollution.

Description

Technical Field

[0001] The utility model relates to a filtering device for a dishwasher. Background Art

[0002] As an efficient and convenient kitchen appliance, dishwashers can greatly improve people's quality of life and are widely accepted and used by people.

[0003] In order to achieve energy-saving and environmental protection effects and improve the recycling of water in the dishwasher, most existing dishwashers, as described in the patent document of Chinese Patent Publication No. CN217592789U, connect a washing pump to a water cup for collecting water under the inner tank base, and the washing pump can transport the washing water in the water cup to the inner tank of the dishwasher to realize water circulation.

[0004] After washing, the washing water with food residues will be collected in the water cup and finally discharged through the drainage pump, and the washing pump needs to transport the washing water in the water cup to the inner tank of the dishwasher. Therefore, it is necessary to provide a filtering device that can not only filter the washing water and circulate the filtered clean washing water to the inner tank of the dishwasher, but also effectively prevent the food residues generated during the filtration from leaking into the clean washing water to cause pollution. Utility Model Content

[0005] The utility model aims to provide a technical solution for a filter device for a dishwasher to address the deficiencies in the prior art, which can not only filter the washing water and circulate the filtered clean washing water to the inner tank of the dishwasher, but also effectively prevent food residues generated during the filtration from leaking into the clean washing water and causing pollution.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] Filter device for dishwasher, comprising

[0008] Inner tank bottom plate;

[0009] A water cup, which is connected to the bottom plate of the inner tank and is used to collect the washing water in the bottom plate of the inner tank;

[0010] Drain pipe, used to connect the water cup to the drainage pump;

[0011] Washing pipe, used to connect the water cup with the washing pump;

[0012] It also includes a slag net, which runs through the top and bottom, and a filter net is arranged around its side wall. The slag net is connected to the water cup, and the filter net on the side wall of the slag net divides the space in the water cup into a first channel and a second channel. The first channel is used to pass washing water with food residues, and the first channel is connected to the drain pipe. The second channel is used to pass filtered washing water, and the second channel is connected to the washing pipe. The slag net is connected to a seal, and the seal is used to seal the gap between the first channel and the second channel.

[0013] By adopting the above technical solution, the slag net can separate the space inside the water cup for collecting water into a first channel and a second channel. After the washing water with food residues enters the first channel, it will be filtered by the filter net on the side wall of the slag net, and the filtered washing water will be precipitated into the second channel. The second channel is connected with the washing pipe, and the washing pipe is used to connect the water cup with the washing pump, so as to achieve the effect of circulating the filtered clean washing water to the inner tank of the dishwasher through the washing pump; because the slag net is sleeved in the water cup, there is a gap between the first channel and the second channel separated by the slag net. In actual use, there is a suction force generated by the washing pump to attract the food residues remaining in the first channel, so that it leaks from the gap between the two channels into the second channel. The food residues leaking into the second channel will contaminate the washing water in the second channel, and even enter the washing pump to cause blockage. The gap between the first channel and the second channel is sealed by a sealing member, which can effectively prevent the food residues generated during filtration from leaking into the clean washing water to cause pollution.

[0014] Furthermore, the sealing member comprises a first sealing ring; an annular boss is formed in the water cup, one end of the slag net is sleeved in the annular boss, and the first sealing ring is interference fit between the annular boss and the outer wall of the slag net.

[0015] Furthermore, the bottom plate of the inner tank includes a mounting plate, the mounting plate is provided with a through hole adapted to the slag net, the through hole is used for the slag net to pass through, and the slag net and the through hole are sealed in cooperation.

[0016] Furthermore, a first mounting plate is formed on the inner side of the through hole, and a second mounting plate is formed on the outer side of the slag screen. The second mounting plate can be embedded in the through hole and fit with the upper surface of the first mounting plate.

[0017] Furthermore, the sealing member includes a second sealing ring, and the second sealing ring is interference-fitted between the first mounting plate and the second mounting plate.

[0018] Furthermore, a pressure strip is formed on the surface of the second sealing ring, and the pressure strip is tightly fitted with the upper surface of the first mounting plate.

[0019] Furthermore, a filter screen plate is connected to one side of the mounting plate, and the filter screen plate is connected to the second channel.

[0020] Furthermore, the slag net is detachably connected to the water cup, and the water cup includes a tightening limit assembly, and the slag net and the water cup are limited by the tightening limit assembly.

[0021] Furthermore, an anti-skid knob is provided on the top of the slag net, and the anti-skid knob can facilitate the clockwise and counterclockwise rotation of the slag net connected to the water cup.

[0022] Furthermore, a flow guiding structure is formed in the second channel, and the flow guiding structure corresponds to the washing pipe.

[0023] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0024] 1. The utility model can not only filter the washing water and circulate the filtered clean washing water to the inner tank of the dishwasher, but also effectively prevent the food residues generated during the filtration from leaking into the clean washing water and causing pollution;

[0025] 2. In the utility model, a pressure strip is formed on the surface of the second sealing ring, and the pressure strip is tightly matched with the upper surface of the mounting plate to avoid the second sealing ring from being deformed and not sealing tightly, and can further improve the sealing effect of the second sealing ring;

[0026] 3. The filter screen in the utility model can filter the washing water in the inner tank, so that the washing water in this part flows directly into the second channel. The washing water can be filtered and collected by multiple parts in a coordinated manner, thereby increasing the water collection efficiency;

[0027] 4. The slag net of the utility model is provided with an anti-skid knob, by operating the anti-skid knob, the slag net can be conveniently rotated to be locked or unlocked relative to the water cup. After unlocking, the slag net can be disassembled, which can facilitate the cleaning of the slag net. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The utility model is further described below in conjunction with the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the structure of the filter device of the utility model;

[0030] Figure 2 It is a side structural schematic diagram of the filter device of the utility model;

[0031] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of AA;

[0032] Figure 4 It is a schematic diagram of the position of the second sealing ring in the utility model;

[0033] Figure 5 It is a schematic diagram of the position of the first sealing ring in the utility model;

[0034] Figure 6 It is a perspective structural schematic diagram showing the bottom of the second sealing ring in the present utility model;

[0035] Figure 7 It is a perspective structural schematic diagram showing the bottom of the second sealing ring in the present utility model;

[0036] Figure 8 This is a schematic diagram of the structure of the slag screen of the utility model;

[0037] Fig. 9 This is a schematic diagram of the structure of the bottom plate of the inner tank in the utility model;

[0038] Fig.10 It is a structural schematic diagram of the mounting plate and the filter screen plate in the utility model;

[0039] Fig.11 This is a structural schematic diagram of the connection state between the middle slag screen and the mounting plate of the utility model;

[0040] Fig.12 A schematic diagram of the internal structure of the water cup of the utility model from one perspective;

[0041] Fig.13 A schematic diagram of the internal structure of the water cup of the utility model from one perspective;

[0042] In the figure: 1-bottom plate of inner tank; 11-groove; 2-mounting plate; 21-through hole; 22-first mounting plate; 23-second mounting plate; 24-filter screen plate;

[0043] 3-water cup; 31-drain pipe; 32-washing pipe; 33-annular boss; 34-ramp;

[0044] 4-slag screen; 41-filter screen; 42-first channel; 43-second channel; 44-feed port; 45-anti-slip knob;

[0045] 5-limiting card slot; 51-limiting card block; 6-first sealing ring; 7-second sealing ring; 71-pressing strip. DETAILED DESCRIPTION

[0046] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0047] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0048] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0049] Example 1

[0050] The dishwasher includes an inner tank, and the inner tank includes a spray head, and the spray head is used to spray and rinse the dishes waiting to be washed in the inner tank;

[0051] The inner liner includes an inner liner bottom plate 1, and a water cup 3 for collecting water is connected to the bottom of the inner liner bottom plate 1. Figure 2 As shown; the water cup 3 is connected to the bottom plate 1 of the inner tank;

[0052] The water cup 3 includes a drain pipe 31, and the drain pipe 31 is used to connect the water cup 3 to a drain pump;

[0053] The water cup 3 includes a washing pipe 32, and the washing pipe 32 is used to connect the water cup 3 to the washing pump;

[0054] After the dishwasher collects the washing water containing food residues generated after rinsing the items to be washed into the water cup 3, it can be discharged by the drainage pump through the drainage pipe 31; the washing pump is connected with the spray head, and the water collected in the water cup 3 can be output to the spray head by the washing pump through the washing pipe 32 to realize the washing water circulation.

[0055] In order to prevent the washing water output by the washing pump to the shower head from being washing water with food residues, the washing water collected in the water cup 3 needs to be filtered and diverted;

[0056] The filter device for the dishwasher can filter and divert the washing water in the water cup 3. Specifically, the filter device acts on the bottom 1 of the inner tank and the water cup 3.

[0057] The filtering device includes a slag screen 4. In this embodiment, the slag screen 4 is connected vertically;

[0058] Furthermore, the slag net 4 is sleeved in the water cup 3, the upper end of the slag net 4 is connected to the inner tank, and the lower end opening of the slag net 4 corresponds to the drain pipe 31;

[0059] The drainage pump is a drainage pump with a residue processing function. Washing water with food residues can enter the drainage pipe 31 from the opening at the lower end of the residue net 4 and then be discharged by the drainage pump.

[0060] The side wall of the slag screen 4 is provided with a filter screen 41, such as Figure 8 , Fig.11 As shown;

[0061] The filter screen 41 arranged around the side wall of the slag screen 4 divides the space in the water cup 3 into a first channel 42 and a second channel 43. Figure 3 As shown;

[0062] The first channel 42 is located inside the filter 41 and communicates with the drain pipe 31 for passing the washing water with food residues;

[0063] The second channel 43 is located outside the filter screen 41 and is connected to the washing pipe 32 for passing the filtered washing water;

[0064] The working principle of slag net 4 is:

[0065] After the dishwasher is running, the spray head rinses the dishes in the inner tank, and the washing water with food residues flows along the inner tank bottom plate 1 to the water cup 3. The residue net 4 is connected from top to bottom and is sleeved on the water cup 3. Its upper edge fits with the inlet of the water cup 3 so that the washing water with food residues can only enter the water cup 3 from the first channel 42. After the washing water with food residues enters the first channel 42, it is filtered by the filter screen 41 and clean washing water is precipitated into the second channel 43. Part of the washing water with food residues will be discharged through the drain pipe 31 by the drain pump; the washing water precipitated into the second channel 43 will be output by the washing pump through the washing pipe 32 to the spray head to realize the washing water circulation; thereby achieving the effect of filtering the washing water and circulating the filtered clean washing water to the inner tank of the dishwasher.

[0066] The slag screen 4 is connected with a seal, which is used to seal the gap between the first channel 42 and the second channel 43;

[0067] The slag screen 4 is detachably connected to the water cup 3, so there is a gap between the first channel 42 and the second channel 43;

[0068] In actual use, the suction force generated by the washing pump will attract the food residues remaining in the first channel 42. Under the influence of the suction force, the food residues will leak out from the gap between the first channel 42 and the second channel 43 into the second channel 43. The food residues leaking into the second channel 43 will contaminate the washing water in the second channel 43 and even enter the washing pump to cause blockage.

[0069] The seal seals the gap between the first channel 42 and the second channel 43, which can effectively prevent food residues generated during filtration from leaking into the clean washing water and causing pollution.

[0070] Further, the sealing member includes a first sealing ring 6 and a second sealing ring 7;

[0071] An annular boss 33 is formed in the water cup 3. Figure 3 , Fig.12 As shown;

[0072] After the slag net 4 is inserted into the water cup 3, the outer wall of the bottom end of the slag net 4 can be inserted into the annular boss 33;

[0073] The first sealing ring 6 is a circular sealing ring, and the first sealing ring 6 is sleeved on the outer side wall of the bottom end of the slag net 4. Figure 8 , Fig.11 As shown;

[0074] The first sealing ring 6 is interference-fitted between the outer wall of the bottom end of the slag net 4 and the inner wall of the annular boss 33. Figure 5 As shown;

[0075] The first sealing ring 6 forms a seal between the residue net 4 and the annular boss 33 of the water cup 3, which can prevent food residues from leaking out from the joint between the two.

[0076] The inner tank bottom plate 1 includes a mounting plate 2, and the mounting plate 2 is connected to a filter screen plate 24, such as Fig.10 As shown;

[0077] The surface of the inner tank bottom plate 1 is formed with a groove 11 that is adapted to the shape of the mounting plate 2 and the filter screen plate 24. Fig. 9 As shown;

[0078] In this embodiment, the mounting plate 2 is mounted in the groove 11 by screws, and the filter screen plate 24 is fixedly connected to one side of the mounting plate 2. Figure 1 As shown;

[0079] A space connected to the second channel 43 is formed on the inner tank bottom plate 1 below the filter mesh plate 24, for allowing the washing water on the inner tank bottom plate 1 to flow directly into the second channel 43 after being filtered through the filter mesh plate 24; in this way, the washing water is collaboratively filtered and collected by multiple parts, thereby increasing the water collection efficiency of the filtering device.

[0080] The surface of the mounting plate 2 is provided with a through hole 21 adapted to the slag screen 4. Fig.10 As shown;

[0081] The through hole 21 can allow the slag mesh 4 to pass through, thereby cooperating with the slag mesh 4 to be closed;

[0082] In this embodiment, a first mounting plate 22 is formed on the inner side of the through hole 21, and the first mounting plate 22 is sunken in the through hole 21. Fig.10 As shown;

[0083] A second mounting plate 23 is formed at a position of the slag net 4 corresponding to the first mounting plate 22. The second mounting plate 23 is formed around the outer side of the slag net 4. Figure 8 , Fig.11 As shown;

[0084] After the slag screen 4 passes through the through hole 21 and is sleeved on the water cup 3, the second mounting plate 23 is embedded in the through hole 21 and fits with the upper surface of the first mounting plate 22;

[0085] The sealing member includes a second sealing ring 7; the lower surface of the second mounting plate 23 is connected to the second sealing ring 7, such as Figure 8 As shown;

[0086] The second sealing ring 7 is interference-fitted between the upper surface of the first mounting plate 22 and the lower surface of the second mounting plate 23. Figure 3 , Figure 4 As shown;

[0087] The second sealing ring 7 forms a seal between the first mounting plate 22 and the second mounting plate 23, which can prevent food residues from leaking from the joint between the two;

[0088] Furthermore, a pressure strip 71 is formed on the lower surface of the second sealing ring 7. Figure 6 , Figure 7 As shown;

[0089] When the second sealing ring 7 is interference fit between the first mounting plate 22 and the second mounting plate 23 , the pressure strip 71 can be pressed tightly on the upper surface of the first mounting plate 22 , thereby avoiding loose sealing after the second sealing ring 7 is deformed and further improving the sealing effect of the second sealing ring 7 .

[0090] In this embodiment, the top of the slag screen 4 is higher than the surface of the mounting plate 2, and a plurality of feed openings 44 are provided around the raised portion, such as Figure 8 , Fig.11 As shown;

[0091] The feed port 44 is connected to the first channel 42 in the slag screen 4;

[0092] During operation of the dishwasher, washing water containing food residues can enter the first channel 42 through the feed opening 44 .

[0093] The slag net 4 is detachably connected to the water cup 3. The water cup 3 includes a tightening limit assembly. The slag net 4 and the water cup 3 are limited by tightening the limit assembly.

[0094] In this embodiment, the tightening limit assembly includes a limit slot 5 and a limit block 51;

[0095] In this embodiment, the limiting slot 5 is formed on the bottom side of the slag screen 4. Figure 8 , Fig.11 As shown;

[0096] There is a protrusion below the limit card slot 5 that cooperates with the limit card block 51, such as Fig.11 As shown;

[0097] A limit block 51 is formed in the water cup 3 at a position corresponding to the limit slot 5. Fig.12 , Fig.13 As shown;

[0098] After the slag net 4 is inserted into the water cup 3, the limit block 51 can correspond to the unlocking position of the limit slot 5. By rotating the slag net 4, the limit block 51 will be rotated into the locking position of the limit slot 5 and locked with the protrusion below the limit slot 5;

[0099] The top of the slag net 4 is connected with an anti-skid knob 45. Figure 8 , Fig.11 As shown;

[0100] The anti-slip knob 45 can conveniently rotate the slag net 4 inserted into the water cup 3 clockwise or counterclockwise, thereby controlling the limit block 51 to move to the unlocking position or locking position of the limit slot 5, thereby achieving the effect of controlling the slag net 4 and the water cup 3 to lock or unlock each other.

[0101] In this embodiment, a flow guiding structure is formed in the second channel 43. Further, the flow guiding structure includes a ramp 34. The ramp 34 corresponds to one side of the washing pipe 32. Fig.12 , Fig.13 As shown;

[0102] The ramp 34 can better guide the washing water in the second channel 43 to enter the washing pipe 32 .

[0103] Example 2

[0104] This embodiment is different from the first embodiment in that, in this embodiment, the pressure strip 71 of the second sealing ring 7 is formed on the upper surface of the second sealing ring 7 and is pressed together with the second mounting plate 23 .

[0105] In this embodiment, the limit slot 5 is opened on the inner wall of the water cup 3, and the limit block 51 is formed on the outer wall of the bottom end of the slag net 4. The limit slot 5 corresponds to the limit block 51 to achieve the effect of corresponding locking of the slag net 4 and the water cup 3.

[0106] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A filter device for a dishwasher, comprising Inner tank bottom plate (1); A water cup (3), the water cup (3) being connected to the inner tank bottom plate (1) and being used to collect washing water in the inner tank bottom plate (1); A drainage pipe (31) is used to connect the water cup (3) to a drainage pump; A washing pipe (32), used for connecting the water cup (3) to a washing pump; Features: The invention also comprises a slag net (4), which is through-through from top to bottom and has a filter net (41) arranged around its side wall. The slag net (4) is connected to the inside of the water cup (3). The filter net (41) on the side wall of the slag net (4) divides the space inside the water cup (3) into a first channel (42) and a second channel (43) inside the water cup (3). The first channel (42) is used for passing washing water with food residues. The first channel (42) is connected to the drain pipe (31). The second channel (43) is used for passing filtered washing water. The second channel (43) is connected to the washing pipe (32). The slag net (4) is connected to a sealing member. The sealing member is used for sealing the gap between the first channel (42) and the second channel (43).

2. The filter device for a dishwasher according to claim 1, characterized in that: The sealing member comprises a first sealing ring (6); an annular boss (33) is formed in the water cup (3), one end of the slag net (4) is sleeved in the annular boss (33), and the first sealing ring (6) is interference-fitted between the annular boss (33) and the outer side wall of the slag net (4).

3. The filter device for a dishwasher according to claim 1, characterized in that: The inner tank bottom plate (1) comprises a mounting plate (2), the mounting plate (2) being provided with a through hole (21) adapted to the slag net (4), the through hole (21) being used for allowing the slag net (4) to pass through, and the slag net (4) and the through hole (21) being sealed in cooperation.

4. The filter device for a dishwasher according to claim 3, characterized in that: A first mounting plate (22) is formed inside the through hole (21), and a second mounting plate (23) is formed outside the slag screen (4); the second mounting plate (23) can be embedded in the through hole (21) and fit with the upper surface of the first mounting plate (22).

5. The filter device for a dishwasher according to claim 4, characterized in that: The sealing member comprises a second sealing ring (7), and the second sealing ring (7) is interference-fitted between the first mounting plate (22) and the second mounting plate (23).

6. The filter device for a dishwasher according to claim 5, characterized in that: A pressure strip (71) is formed on the surface of the second sealing ring (7), and the pressure strip (71) is tightly fitted with the upper surface of the first mounting plate (22).

7. The filter device for a dishwasher according to claim 3, characterized in that: A filter screen plate (24) is connected to one side of the mounting plate (2), and the filter screen plate (24) is in communication with the second channel (43).

8. The filter device for a dishwasher according to claim 1, characterized in that: The slag net (4) is detachably connected to the water cup (3); the water cup (3) includes a screw-on limit assembly; the slag net (4) and the water cup (3) are limited in position by the screw-on limit assembly.

9. The filter device for a dishwasher according to claim 8, characterized in that: The top end of the slag net (4) is provided with an anti-skid knob (45), and the anti-skid knob (45) can facilitate the clockwise or counterclockwise rotation of the slag net (4) connected to the water cup (3).

10. The filter device for a dishwasher according to claim 1, characterized in that: A flow guiding structure is formed in the second channel (43), and the flow guiding structure corresponds to the washing pipe (32).

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