A filter system and dishwasher

Abstract

The application relates to the technical field of dishwashers, and discloses a filtering system and a dishwasher, which comprise a water tank and a filter, a plurality of first filter holes are arranged on the filter, the filter is arranged in the water tank, and the diameters of the plurality of first filter holes increase from bottom to top along the height of the filter. The filtering system is provided with the filter in the water tank, the diameters of the plurality of first filter holes arranged on the filter increase from bottom to top along the height of the filter, the filtering system can adapt to the filtering of washing water with different dirt levels, the filtering performance is improved, and the clogging is reduced. The dishwasher disclosed by the application has good filtering effect, avoids the clogging of the filter, has long service life, and realizes the recycling of washing water.

Description

Technical Field

[0001] This invention relates to the field of dishwasher technology, and more particularly to a filtration system and a dishwasher. Background Technology

[0002] A dishwasher is a device that automatically cleans tableware such as bowls, chopsticks, plates, dishes, knives, and forks. The filtration system is an important component of the dishwasher, used to filter particulate matter from the washing water, preventing secondary contamination of the tableware and improving the dishwasher's cleaning efficiency.

[0003] Existing dishwasher filtration systems use planar coarse filters and cylindrical fine filters to filter wash water. These filters typically have pores of the same size, which are prone to clogging during dishwasher operation. Furthermore, the uniform pore size cannot accommodate wash water with varying levels of dirt. Therefore, there is an urgent need for a new filtration system capable of adapting to different levels of dirtiness in wash water, thereby reducing the risk of pore clogging. Summary of the Invention

[0004] The purpose of this invention is to provide a filtration system and dishwasher that solves the problem that existing filters are prone to clogging and cannot adapt to the filtration of washing water with different levels of dirt.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] The present invention provides a filtration system, including a water tank and a filter, wherein the filter is provided with a plurality of first filter holes and is disposed in the water tank, and the diameter of the plurality of first filter holes increases from bottom to top along the height of the filter.

[0007] This filtration system incorporates a filter within the water tank. The diameter of the multiple primary filter holes on the filter increases from bottom to top along the filter's height. When the washing water is relatively dirty, it can be filtered through the smaller diameter primary filter holes at the bottom of the filter. When the washing water is heavily soiled, a height difference is created between the liquid levels inside and outside the filter. This height difference facilitates filtration through the larger diameter primary filter holes at the top of the filter, preventing clogging and thus adapting to different levels of soiling, improving filtration performance and reducing blockages.

[0008] As a preferred embodiment of the above-mentioned filtration system, the filter divides the space inside the water tank into two parts, and the cross-sectional area inside the filter at any height is greater than the cross-sectional area between the filter and the inner wall of the water tank at the same height.

[0009] Because the internal volume of the filter is larger than the external volume at the same height, when the washing water is heavily soiled, the external liquid level of the filter will be higher than the internal liquid level. This height difference facilitates the washing water in the tank to pass through the filter and enter the filter.

[0010] As a preferred embodiment of the aforementioned filtration system, the filter includes a side wall and a top wall, which are connected to form a cover structure. The side wall has the first filter hole, and its bottom is connected to the bottom of the water tank. The cover structure of the filter is simple and easy to manufacture. The connection between the bottom of the side wall and the bottom of the water tank facilitates fixing the filter inside the tank.

[0011] As a preferred embodiment of the aforementioned filtration system, the top wall is provided with multiple second filter holes. The arrangement of these second filter holes facilitates the return washing water to pass through and enter the filter, enabling cyclic filtration.

[0012] As a preferred embodiment of the aforementioned filtration system, the top wall of the filter is inclined downwards from its center toward the side wall. This arrangement allows particulate matter in the returned washing water to fall along the top wall of the filter into the water tank, preventing particulate matter from clogging the second filter pores.

[0013] As a preferred embodiment of the above-mentioned filtration system, a diffuser is further included. The diffuser is disposed within the filter and extends from the top of the filter. A water inlet is provided at the bottom of the diffuser. The filtration system also includes a washing pump, the impeller of which is disposed within the diffuser. The impeller of the washing pump, located within the diffuser, pumps the washing water out. The diffuser pressurizes the filtered washing water, spraying it onto the dishes for a thorough rinse, resulting in a better washing effect and preventing washing water from splashing onto the filter.

[0014] As a preferred embodiment of the aforementioned filtration system, the diffuser includes a diffuser section and a water inlet pipe. The bottom of the diffuser section has the water inlet hole, and the water inlet pipe is connected to the top of the diffuser section, extending from the top of the filter. This diffuser structure is simple, easily pressurizes water, and effectively sprays and rinses tableware, resulting in good cleaning performance.

[0015] In a preferred embodiment of the aforementioned filtration system, the diameter of the diffuser decreases from bottom to top. This structure can accommodate the impeller and achieve the effect of pressurizing the water.

[0016] As a preferred embodiment of the aforementioned filtration system, the water tank has an outwardly expanding opening. This structure allows the water tank to accommodate a large area of ​​backflowing washing water.

[0017] The present invention also provides a dishwasher, including a dishwasher body and a filtration system as described above disposed within the dishwasher body. This dishwasher has good filtration performance, avoids filter clogging, has a long service life, and enables the recycling of washing water.

[0018] Beneficial effects of the embodiments of the present invention:

[0019] The filtration system proposed in this invention features a filter installed within a water tank. The diameter of multiple first filter holes on the filter increases from bottom to top along the filter's height. When the washing water is relatively dirty, filtration is achieved through the smaller diameter first filter holes at the bottom of the filter. When the washing water is relatively dirty, a height difference is created between the liquid levels inside and outside the filter. This height difference facilitates filtration through the larger diameter first filter holes at the top of the filter, preventing clogging and thus adapting to the filtration of washing water with varying degrees of dirtiness. This improves filtration performance and reduces clogging.

[0020] The filtration system proposed in this invention divides the space inside the water tank into two parts. At any given height, the cross-sectional area inside the filter is larger than the cross-sectional area between the filter and the inner wall of the water tank at the same height. This design ensures that when the washing water is highly soiled, the liquid level outside the filter will be higher than the liquid level inside, creating a significant height difference. This height difference facilitates the filtering of the washing water in the tank through the first filter hole at the top of the filter before it enters the interior of the filter.

[0021] The dishwasher proposed in this invention includes a dishwasher body and the aforementioned filtration system disposed within the dishwasher body. This dishwasher offers good filtration performance, avoids filter clogging, has a long service life, and enables the recycling of washing water. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the filtration system provided in Embodiment 1 of the present invention;

[0023] Figure 2 This is a top view of the filtration system provided in Embodiment 1 of the present invention;

[0024] Figure 3 yes Figure 2 A cross-sectional view of the filtration system along line AA.

[0025] In the picture:

[0026] 1. Water tank; 2. Filter; 3. Washing pump; 4. Impeller; 5. Diffuser;

[0027] 21. Side wall; 22. Top wall; 51. Diffuser section; 52. Water inlet pipe;

[0028] 211, First filter hole; 221, Second filter hole. Detailed Implementation

[0029] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] Example 1:

[0033] A filtration system is used to filter particulate matter from the washing water of a dishwasher, preventing secondary contamination of dishes and improving the dishwasher's cleaning efficiency. However, conventional filters have uniformly sized pores, making them unsuitable for filtering washing water with varying levels of dirt and prone to clogging. Therefore, this invention provides a filtration system to solve these problems. Figure 1-3As shown, the filtration system includes a water tank 1 and a filter 2. The filter 2 has multiple first filter holes 211 and is disposed within the water tank 1. The diameter of the first filter holes 211 increases from bottom to top along the height of the filter 2. This filtration system, by placing the filter 2 within the water tank 1 and having multiple first filter holes 211 with increasing diameters along the height of the filter 2, allows for filtration of the washing water when it is less dirty, as the smaller diameter first filter holes 211 at the bottom of the filter 2 suffice. When the washing water is more dirty, a height difference exists between the liquid levels inside and outside the filter 2. This height difference facilitates filtration through the larger diameter first filter holes 211 at the top of the filter 2. Because the larger diameter of the upper first filter holes 211 makes them less prone to clogging, this system can effectively filter washing water of varying dirt levels, improving filtration performance and reducing clogging.

[0034] The filtration system also includes a washing pump 3, which is located below the water tank 1, and the impeller 4 of the washing pump 3 is located inside the filter 2.

[0035] The sink 1 contains the washing water for washing dishes. After being filtered by the filter 2, the washing water is sprayed out by the impeller 4 of the washing pump 3 to rinse the dishes. The rinsed washing water will flow back into the sink 1 for recycling.

[0036] Preferably, the water tank 1 has a certain depth, and the opening of the water tank 1 is set to expand outward. The water tank 1 with this structure can receive a large area of ​​backflowing washing water, preventing the backflowing washing water from splashing out of the water tank 1.

[0037] like Figure 3 As shown, the filter 2 includes a side wall 21 and a top wall 22, which are connected to form a cover structure. The side wall 21 is provided with a first filter hole 211, and the bottom of the side wall 21 is connected to the bottom of the water tank 1. The cover structure of the filter 2 is simple and easy to manufacture. The connection between the bottom of the side wall 21 and the bottom of the water tank 1 makes it easy to fix the filter 2 inside the water tank 1.

[0038] Optionally, the sidewall 21 of the filter 2 is formed into a cylindrical structure, which facilitates the filtering of washing water in the water tank 1 through the first filter hole 211 on the sidewall 21 into the water tank 1. The sidewall 21 can also be formed into other shapes.

[0039] Optionally, the filter 2 can be detachably connected to the water tank 1, facilitating the disassembly, installation, and replacement of the filter 2, as well as its cleaning. Specifically, the connection between the filter 2 and the water tank 1 can be achieved through snap-fit, bolt, or other methods, without further limitation.

[0040] Optionally, the sidewall 21 and top wall 22 of filter 2 are an integral structure, which is simple and easy to manufacture.

[0041] Preferably, the height of the side wall 21 is greater than the depth of the water tank 1, so that the washing water in the water tank 1 can be filtered through the first filter hole 211 on the side wall 21.

[0042] Furthermore, the side wall 21 of filter 2 divides the space inside the water tank 1 into two parts. At any given height, the cross-sectional area inside filter 2 is greater than the cross-sectional area between filter 2 and the inner wall of water tank 1 at the same height. This arrangement ensures that the external liquid level of filter 2 is higher than the internal liquid level. When the washing water is highly soiled, the height difference will be greater. This height difference facilitates the entry of washing water from water tank 1 into the interior of filter 2 after filtration, further preventing clogging of the first filter hole 211.

[0043] Preferably, the top wall 22 is provided with a plurality of second filter holes 221. The arrangement of the second filter holes 221 facilitates the return washing water to enter the filter 2 through the second filter holes 221, so as to realize the circulation filtration.

[0044] Preferably, the top wall 22 of the filter 2 is inclined downward from the center of the top wall 22 towards the side wall 21. This arrangement allows particulate impurities in the returned washing water to fall into the water tank 1 along the top wall 22 of the filter 2, preventing particulate impurities from clogging the second filter hole 221.

[0045] Preferably, the filtration system further includes a diffuser 5, which is disposed within the filter 2 and extends from the top of the filter 2. The diffuser 5 has a water inlet at its bottom. Washing water in the tank 1 enters the filter 2 after being filtered through the first filter hole 211. An impeller 4 is disposed within the diffuser 5. The rotation of the impeller 4 draws the filtered washing water into the diffuser 5 through the water inlet and sprays it out from the diffuser 5. The diffuser 5 allows the filtered washing water to be drawn into the diffuser 5 through the water inlet and pressurized by the diffuser 5, resulting in a spray rinse of the tableware. This provides a good washing effect and prevents washing water from splashing onto the filter 2.

[0046] Furthermore, the diffuser 5 includes a diffuser section 51 and a water inlet pipe 52. The bottom of the diffuser section 51 is provided with a water inlet hole, and the water inlet pipe 52 is connected to the top of the diffuser section 51, extending from the top of the filter 2. This diffuser 5 has a simple structure, easily pressurizes water, and achieves the effect of spraying and rinsing tableware, resulting in a good cleaning effect.

[0047] Optionally, the water pipe 52 is connected to a sprayer (not shown in the figure) for rinsing the tableware to achieve the effect of spray rinsing.

[0048] like Figure 3As shown, the diameter of the diffuser 51 decreases from bottom to top. This structure can accommodate the impeller 4 and achieve the effect of pressurizing the water.

[0049] Example 2:

[0050] This embodiment provides a filtration system. The difference between the dishwasher filtration system in this embodiment and the filtration system in Embodiment 1 lies in the structure of the filter 2. In Embodiment 1, the top wall 22 and side wall 21 of the filter 2 are an integral structure, while in this embodiment, the top wall 22 and side wall 21 of the filter 2 are separate structures, and the top wall 22 and side wall 21 are detachably connected. This structure allows for flexible assembly and disassembly, enabling the replacement of either the top wall 22 or the side wall 21 individually. The specific connection method for the top wall 22 and side wall 21 can be a snap-fit, bolt connection, or other similar method, and is not specifically limited here, as long as the detachable connection of the top wall 22 and side wall 21 can be achieved.

[0051] Example 3:

[0052] The present invention also provides a dishwasher, including a dishwasher body and a filtration system disposed within the dishwasher body as described in Embodiment 1 or Embodiment 2. This dishwasher has a good filtration effect, avoids clogging of the filter 2, has a long service life, and achieves the recycling of washing water.

[0053] Specifically, the dishwasher body includes a cabinet and an inner tub. The cabinet supports the inner tub and other structures housed within it. A base is located at the bottom of the cabinet, and a cover is located at the top. The washing of dishes is completed within the inner tub. A water tank 1 is located at the bottom of the inner tub, and a dish rack is installed inside the inner tub, positioned above the water tank 1, for holding the dishes. A washing pump 3 is installed below the water tank 1. The impeller 4 of the washing pump 3 is installed inside the water tank 1. The impeller 4, through its spiral motion, pushes the washing water filtered by the filter 2 to form an external water jet that washes the dishes located above the water tank 1. In this embodiment, the impeller 4 includes a rotating shaft and several spiral blades arranged on the outer circumference of the rotating shaft. The rotating shaft is connected to the inner tub by a waterproof sealing ring and rotates under the drive of the washing pump 3.

[0054] The washing water can fall directly back into the water tank 1, be filtered through the first filter hole 211 and then enter the filter 2 for recycling; or be filtered through the second filter hole 221 on the top wall 22 of the filter 2 and then enter the filter 2 for recycling.

[0055] Preferably, the dishwasher also includes a water supply system, which includes an inlet valve and a water level detection device. The inlet valve is connected to the water inlet of the sink 1 via a pipe. The water level detection device is installed inside the sink 1 to detect the water level of the washing water in the sink 1. A drain outlet is provided on the sink 1 and is connected to a drain pipe to drain the washing water.

[0056] To enhance the cleaning power of the washing water, the dishwasher also includes a heating device to heat the washing water, thereby activating the detergent and enhancing its cleaning ability.

[0057] The operation of each component of the dishwasher described above is controlled by a computer board.

[0058] In the description herein, it should be understood that the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings, and are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are merely used for distinction in description and have no special meaning.

[0059] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0060] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for the purpose of clarifying the device. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0061] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A filtration system comprising a water tank (1) and a filter (2), wherein the filter (2) is provided with a plurality of first filter holes (211), characterized in that, The filter (2) is disposed in the water tank (1), and the filter (2) is detachably connected to the water tank (1). The diameter of the plurality of first filter holes (211) increases from bottom to top along the height of the filter (2). The filter (2) includes a side wall (21) and a top wall (22). The top wall (22) is detachably connected to the side wall (21). The top wall (22) and the side wall (21) are connected to form a cover structure. The side wall (21) is provided with the first filter hole (211). The bottom of the side wall (21) is connected to the bottom of the water tank (1). The height of the side wall (21) is greater than the depth of the water tank (1). The top wall (22) is provided with a plurality of second filter holes (221). The diameter of the water tank (1) increases from bottom to top along the height of the filter (2).

2. The filtration system according to claim 1, characterized in that, The filter (2) divides the space inside the water tank (1) into two parts. At any height, the cross-sectional area inside the filter (2) is greater than the cross-sectional area between the filter (2) and the inner wall of the water tank (1) at the same height.

3. The filtration system according to claim 1, characterized in that, The top wall (22) of the filter (2) is inclined downward from the center of the top wall (22) toward the side wall (21).

4. The filtration system according to any one of claims 1-3, characterized in that, It also includes a diffuser (5), which is disposed inside the filter (2) and extends out of the top of the filter (2). The diffuser (5) has a water inlet at its bottom. The filtration system also includes a washing pump (3), whose impeller (4) is disposed inside the diffuser (5).

5. The filtration system according to claim 4, characterized in that, The diffuser (5) includes a diffuser section (51) and a water inlet pipe (52). The bottom of the diffuser section (51) is provided with the water inlet hole. The water inlet pipe (52) is connected to the top of the diffuser section (51). The water inlet pipe (52) extends out of the filter (2) from the top of the filter (2).

6. The filtration system according to claim 5, characterized in that, The diameter of the diffuser (51) decreases from bottom to top.

7. The filtration system according to any one of claims 1-3, characterized in that, The opening of the water tank (1) is set to expand outward.

8. A dishwasher, characterized in that, It includes a dishwasher body and a filtration system as described in any one of claims 1-7 disposed within the dishwasher body.

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