Dishwasher cleaning structure and dishwasher

Abstract

The present invention relates to the technical field of household appliances, and specifically discloses a dishwasher cleaning structure and a dishwasher. The dishwasher cleaning structure includes a connection box, a first drain pipe and a filter assembly. The connection box is arranged on the housing of the dishwasher and is arranged close to the front wall of the housing. The connection box is connected to the sewer; the first drain pipe is configured to connect the sink of the dishwasher and the connection box; the filter assembly can slide forward and backward through the front side wall of the connection box to selectively connect to the water outlet end of the first drain pipe to filter the water discharged by the first drain pipe. The dishwasher cleaning structure can prevent the dirt from being filtered and accumulated in the sink of the dishwasher, thereby blocking the sink. At the same time, it can also improve the convenience of users cleaning the dirt, bringing convenience to users and maintenance personnel.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a dishwasher cleaning structure and a dishwasher. Background Art

[0002] The existing dishwasher is provided with a small hole at the bottom of the sink, and the filtered water in the sink is discharged into the sewer through the small hole. In order to prevent the small amount of dirt remaining in the water from clogging the sewer, there are two layers of plastic grids on the small hole, which can block the dirt and keep it at the bottom of the sink to prevent it from flowing into the sewer and clogging the sewer. However, after a long period of accumulation, when the sink is filled with dirt, it will block the drainage waterway of the dishwasher and cause the dishwasher to malfunction, especially when there is a lot of dirt, and the sink often needs to be cleaned every time the dishes are washed.

[0003] Since the sink is located at the bottom of the dishwasher, it is inconvenient to clean. And for users who do not understand the working principle of the dishwasher, it is likely that the dirt will continue to remain at the bottom of the dishwasher to produce odor, or because of the excessive dirt blocking the water path, they may think that the dishwasher is faulty and report it for repair, which brings inconvenience to users and maintenance personnel. Summary of the invention

[0004] One object of the present invention is to provide a dishwasher dirt cleaning structure to prevent dirt from being filtered and accumulated in the dishwasher's water tank, thereby clogging the water tank. At the same time, it can also improve the convenience of users cleaning dirt, bringing convenience to users and maintenance personnel.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A dishwasher cleaning structure, comprising:

[0007] A connection box is arranged on the housing of the dishwasher and is arranged close to the front wall of the housing, and the connection box is connected to the sewer;

[0008] a first drain pipe configured to communicate with the sink of the dishwasher and the connection box;

[0009] The filter assembly can slide forward and backward through the front side wall of the connection box to selectively connect to the water outlet end of the first drain pipe to filter the water discharged from the first drain pipe.

[0010] Preferably, the filter assembly comprises:

[0011] The filter body is provided with a docking disc seat located in the circumferential direction of the water outlet end on the connection box. The filter body is a cylindrical structure and can be rotated to a first position connected to the docking disc seat and to a second position detached from the docking disc seat.

[0012] Preferably, a water flow regulator is further provided in the connection box, and the water flow regulator is configured to reduce the water flow intensity at the water outlet.

[0013] Preferably, the water flow regulating member is an elastic tongue, the lower end of the elastic tongue is connected to the connection box, and the upper end of the elastic tongue covers the water outlet.

[0014] Preferably, a first sensor is provided on a side of the elastic tongue away from the water outlet, and the first sensor is configured to detect whether water in the connection box flows back to the first drain pipe.

[0015] Preferably, a second sensor is provided in the connection box and is configured to detect the amount of dirt accumulation in the filter assembly.

[0016] Preferably, the second sensor includes a plurality of transmitting ends and a plurality of receiving ends; the dishwasher cleaning structure further includes:

[0017] An upper bracket, one end of which is connected to the connection box, and one of the plurality of transmitting ends and the plurality of receiving ends is arranged at intervals along the length direction of the upper bracket;

[0018] A lower bracket, one end of which is connected to the connection box, the lower bracket is tilted up and down from one end to the other end, the upper bracket is spaced apart from the lower bracket, the multiple transmitting ends and another one of the multiple receiving ends are spaced apart along the length direction of the lower bracket, and the transmitting ends correspond to the receiving ends one by one;

[0019] The filter assembly is horizontally arranged in the connection box, and the lower bracket is located in the filter assembly.

[0020] Preferably, one end of the upper bracket is located at the upper end of the water outlet, and gradually tilts downward from one end to the other end;

[0021] One end of the lower bracket is located at the lower end of the water outlet and gradually tilts upward from one end to the other end, and the other end of the upper bracket is connected to the other end of the lower bracket;

[0022] The upper bracket and the lower bracket are both located in the filter assembly.

[0023] Preferably, the transmitting end is a light transmitter, and the receiving end is a light detector.

[0024] Another object of the present invention is to provide a dishwasher to prevent dirt from being filtered and accumulated in the water tank of the dishwasher, thereby clogging the water tank. At the same time, it can also improve the convenience of users in cleaning dirt, bringing convenience to users and maintenance personnel.

[0025] To achieve this object, the present invention adopts the following technical solutions:

[0026] A dishwasher comprises the above-mentioned dishwasher cleaning structure.

[0027] Beneficial effects of the present invention:

[0028] The filter assembly can slide forward and backward through the front side wall of the connection box, so the filter assembly slides forward and can be connected to the first drain pipe, thereby realizing the installation of the filter assembly. The filter assembly slides backward and can be separated from the first drain pipe, thereby realizing the removal of the filter assembly. Since the connection box is arranged close to the front wall of the shell, the user does not need to remove the filter assembly from the bottom of the dishwasher, but directly removes the filter assembly from the connection box from the front side of the dishwasher, thereby facilitating the user to clean the dirt in the filter assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a structural schematic diagram of a dishwasher provided by an embodiment of the present invention;

[0030] Figure 2 is a structural schematic diagram of a dishwasher provided by an embodiment of the present invention from another perspective;

[0031] Figure 3 It is an exploded view of the cleaning structure of a dishwasher provided by an embodiment of the present invention.

[0032] In the figure:

[0033] 1. Connection box; 11. Front side wall; 12. Round hole;

[0034] 2. The first drainage pipe;

[0035] 3. Filter assembly; 31. Filter body; 32. Twist and pinch tab;

[0036] 4. docking tray; 5. elastic tongue; 6. second drain pipe; 7. shelf;

[0037] 8. Shell; 81. Front wall;

[0038] 9. Water tank; 10. Upper bracket; 20. Lower bracket; 30. First sensor. DETAILED DESCRIPTION

[0039] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It is also necessary to explain that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all.

[0040] The present invention defines some directional words. In the absence of any contrary explanation, the directional words used, such as "upper", "lower", "left", "right", "front", and "rear", refer to the dishwasher cleaning structure provided by the present invention under normal use. "Inside" and "outside" refer to the inside and outside relative to the contour of each part itself. These directional words are used for ease of understanding and do not constitute a limitation on the protection scope of the present invention.

[0041] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] like Figure 1 As shown, the dishwasher comprises a housing 8 and a rack 7 disposed in the housing 8. The rack 7 may have multiple layers and is used to place dishes to be washed. An opening is provided in the front wall 81 of the housing 8, and the rack 7 is slidably connected to the housing 8 through the opening, so that the rack 7 can be pulled out of the housing 8 for convenient placement of dishes.

[0044] The dishwasher further includes a water tank 9. The water after washing the dishes flows into the water tank 9 after being filtered, and then flows into the sewer after passing through the water tank 9. The water flowing out of the water tank 9 is mixed with a small amount of washed dirt. Therefore, in order to filter the washed dirt flowing out of the water tank 9, the dishwasher in this embodiment further includes a dishwasher cleaning structure. Due to the effect of gravity, the dirt will flow to the lower end of the housing 8 along with the washing water. Therefore, the dishwasher cleaning structure is arranged at a position close to the lower end of the housing 8, which will not affect the aesthetics of the dishwasher, nor will it affect the arrangement of the rack 7, and can also avoid major changes in the overall structure of the dishwasher.

[0045] The cleaning structure of the dishwasher can prevent dirt from being filtered and accumulated in the water tank 9 of the dishwasher, blocking the water tank 9 and causing inconvenience to users and maintenance personnel, while also improving the convenience of cleaning dirt for users.

[0046] like Figure 1-Figure 3 As shown, the dishwasher cleaning structure provided in this embodiment includes a connection box 1 and a first drain pipe 2. The first drain pipe 2 connects the sink 9 and the connection box 1, and its water inlet end is connected to the sink 9 of the dishwasher. Preferably, the water outlet end of the first drain pipe 2 is connected to the connection box 1 through the rear side wall of the connection box 1. A filter assembly 3 is arranged in the connection box 1 to filter the sewage discharged by the first drain pipe 2 to prevent dirt from entering the sewer. The connection box 1 is arranged on the housing 8 of the dishwasher and is arranged close to the front wall 81 of the housing 8 to facilitate the removal and installation of the filter assembly 3. In this embodiment, the front wall 81 of the housing 8 is provided with an installation opening, and the connection box 1 is installed on the housing 8 through the installation opening, and the front side wall 11 of the connection box 1 and the front wall 81 of the housing 8 are located in the same plane.

[0047] The filter assembly 3 can slide forward and backward through the front side wall 11 of the connection box 1, so that the filter assembly 3 can slide backward (such as Figure 1 The water discharged from the first drain pipe 2 is first filtered by the filter assembly 3, then flows out of the filter assembly 3 and flows into the connection box 1. The connection box 1 is connected to the sewer so that the filtered water flows into the sewer from the connection box 1. When the filter assembly 3 needs to be cleaned, pull the filter assembly 3 forward (as shown in the arrow). Figure 1 The filter assembly 3 is detached from the first drain pipe 2 and taken out of the connection box 1. Specifically, a circular hole 12 is provided on the front side wall 11 of the connection box 1, and the filter assembly 3 is arranged in the connection box 1 through the circular hole 12.

[0048] Since the water outlet of the first drain pipe 2 is connected to the connection box 1 through the rear side wall of the connection box 1, the filter assembly 3 can slide forward and backward through the front side wall 11 of the connection box 1. Therefore, as long as the filter assembly 3 slides forward and backward, it can be connected and separated from the first drain pipe 2, and then the installation and removal of the filter assembly 3 can be achieved. Since the connection box 1 is arranged close to the front wall 81 of the shell 8, the user does not need to take out the filter assembly 3 from the bottom of the dishwasher, but can directly take out the filter assembly 3 from the connection box 1 from the front side of the dishwasher, so that the user can clean the dirt in the filter assembly 3 conveniently.

[0049] Of course, in other embodiments, the connection box 1 may be arranged inside the shell 8, and the front side wall 11 of the connection box 1 is arranged opposite to the front wall 81 of the shell 8, and the filter assembly 3 passes through the shell 8 and the connection box 1 in sequence to achieve connection with the first drain pipe 2.

[0050] In other embodiments, the front side wall 11 of the connecting box 1 may overlap with the front wall 81 of the shell 8, that is, the other side walls of the connecting box 1 are directly connected to the front wall 81 of the shell 8 to form a connecting box 1 with a accommodating cavity. In this case, the filter assembly 3 only needs to pass through the front wall 81 of the shell 8 to be connected to the first drain pipe 2.

[0051] Furthermore, a water inlet is provided on the connection box 1, and a water outlet of the first drain pipe 2 is connected to the connection box 1 through the water inlet. A water outlet may also be provided on the connection box 1, and the water outlet is connected to the second drain pipe 6, and the connection box 1 is connected to the sewer through the second drain pipe 6. The connection box 1 may be formed by stamping or welding of metal materials to facilitate connection with the housing 8 of the dishwasher. Specifically, the connection box 1 and the housing 8 may be welded or fixedly connected by a connector.

[0052] Preferably, the filter assembly 3 includes a filter body 31, and a docking plate seat 4 is provided on the connecting box 1 and is located circumferentially of the water outlet end of the first drain pipe 2. The filter body 31 is a cylindrical structure and can be rotated to a first position connected to the docking plate seat 4, and rotated to a second position detached from the docking plate seat 4.

[0053] The filter body 31 may be an injection molded part with an opening at one end, the opening end being connected to the docking tray 4, and a plurality of filter holes are provided on the peripheral surface of the injection molded part to allow water to pass through. Of course, the filter body 31 may also include a metal or plastic mesh and a support structure for installing the filter, and the filter body 31 is connected to the docking tray 4 through the support structure. Since the structure of the filter body 31 is prior art, it will not be described in detail here.

[0054] The filter body 31 can be connected with the docking tray 4 by snapping. The filter body 31 includes at least two snaps, which are arranged at one end of the filter body 31 at intervals. A card plate corresponding to the snaps is arranged on the docking tray 4. When the filter body 31 is in the first position, the snap is snapped to the card plate to realize the connection between the filter assembly 3 and the docking tray 4. The filter assembly 3 is rotated so that the snap is located between two adjacent card plates, that is, the filter body 31 is located in the second position.

[0055] Of course, the filter body 31 can also be threadedly connected to the docking disc seat 4. Specifically, an external thread is provided on the outer peripheral surface of the docking disc seat 4, and an internal thread threadedly connected to the external thread is provided on the filter body 31.

[0056] In order to facilitate the rotation of the filter body 31, the filter assembly 3 may further include a twisting pinch piece 32, which is arranged at the front end of the filter body 31 for the user to hold.

[0057] Preferably, in order to avoid excessive water flow intensity in the first drain pipe 2, which may flush out the dirt accumulated in the filter assembly 3 and cause the dirt to flow back into the first drain pipe 2, a water flow regulator is also provided in the connection box 1, which can reduce the water flow intensity at the water outlet.

[0058] In this embodiment, the water flow regulating member is an elastic tongue piece 5, the root of the elastic tongue piece 5, that is, the lower end of the elastic tongue piece 5 is connected to the connection box 1, and the upper end of the elastic tongue piece 5 covers the water outlet end of the first drain pipe 2. Since the elastic tongue piece 5 is elastic, when water flows out of the first drain pipe 2, the upper end of the elastic tongue piece 5 is impacted by the water flow, and the distance between the upper end of the elastic tongue piece 5 and the water outlet end increases, so that the elastic tongue piece 5 can block part of the water flow while allowing the water flow to flow out, thereby reducing the water flow intensity at the water outlet end of the first drain pipe 2, and further reducing the impact of the water flow on the dirt.

[0059] In addition, since the dirt will gradually accumulate upward from the lower end of the filter assembly 3, the lower end of the elastic tongue 5 is connected to the connecting box 1. In the process of dirt accumulating from bottom to top, under the flushing action of the water flow, the dirt will gradually accumulate at the lower end of the elastic tongue 5, thereby preventing the water flow from directly flushing the dirt and preventing the dirt from flowing back. At the same time, the dirt will also apply a force to the elastic tongue 5 toward the water outlet end of the first drain pipe 2, further reducing the water flow intensity at the water outlet end.

[0060] Preferably, the elastic tongue piece 5 is made of rubber, the docking tray seat 4 is made of plastic, and the elastic tongue piece 5 is connected to the docking tray seat 4 .

[0061] Since the water in the water tank 9 has been filtered once before entering the water tank 9, the dirt in the filter assembly 3 generally needs to be cleaned after a long time. Therefore, the user can wait until the dishwasher is not used to clean the filter assembly 3. However, when the user forgets to clean for a long time, or the dishwasher runs a single time and causes too much dirt to accumulate in the filter assembly 3, the filter assembly 3 will be blocked, causing the water to flow back from the filter assembly 3 to the first drain pipe 2. In order to avoid the above situation, the elastic tongue 5 is provided with a first sensor 30 on the side away from the water outlet end of the first drain pipe 2. The first sensor 30 can detect whether the water in the connection box 1 flows back to the first drain pipe 2. Specifically, the first sensor 30 can be a pressure-sensitive sensor or an image acquisition sensor. When water flows back to the first drain pipe 2, the impact of water on the first sensor 30 increases, so that it can be judged whether there is water backflow according to the pressure value detected by the pressure-sensitive sensor. The pressure-sensitive sensor or the image acquisition sensor is a prior art and will not be described here.

[0062] In order to facilitate the user to observe the amount of dirt accumulated in the filter component 3 and select an appropriate time to clean the filter component 3, a second sensor is provided in the connection box 1, and the second sensor is configured to detect the amount of dirt accumulated in the filter component 3.

[0063] In this embodiment, the second sensor includes a plurality of transmitting ends and a plurality of receiving ends. Preferably, the transmitting end is a light transmitter, and the receiving end is a light detector. When the receiving end cannot receive the light emitted by the corresponding transmitting end, it indicates that the transmitting end or the receiving end is covered by dirt, thereby achieving the purpose of detecting the amount of dirt.

[0064] The dishwasher cleaning structure also includes an upper bracket 10 and a lower bracket 20 for installing a transmitting end and a receiving end respectively. The upper bracket 10 and the lower bracket 20 are arranged at an upper and lower interval. The lower bracket 20 is located in the filter assembly 3. The lower bracket 20 is arranged to be tilted up and down from one end to the other end. The filter assembly 3 is arranged horizontally, so that the lower bracket 20 can be gradually buried by dirt as the amount of dirt accumulation increases.

[0065] Specifically, one end of the upper bracket 10 and one end of the lower bracket 20 are both connected to the connection box 1, a plurality of transmitting ends are arranged on the lower surface of the upper bracket 10 and are arranged at intervals along the length direction of the upper bracket 10, a plurality of receiving ends are arranged on the upper surface of the lower bracket 20 and are arranged at intervals along the length direction of the lower bracket 20, and the transmitting ends and the receiving ends are arranged one by one. The plurality of receiving ends are gradually blocked by dirt from bottom to top, and when the threshold of the amount of dirt accumulation is reached, the user is reminded to clean the filter assembly 3.

[0066] Furthermore, one end of the upper bracket 10 is located at the upper end of the water outlet of the first drain pipe 2, and is gradually tilted downward from one end to the other end. One end of the lower bracket 20 is located at the lower end of the water outlet of the first drain pipe 2, and is gradually tilted upward from one end to the other end. The other end of the upper bracket 10 is connected to the other end of the lower bracket 20, and the upper bracket 10 and the lower bracket 20 are both located in the filter assembly 3. This arrangement can improve the connection strength between the upper bracket 10 and the lower bracket 20. At this time, when the dirt accumulation height is higher than the other end of the lower bracket 20, the second sensor cannot detect the change in the amount of dirt. Therefore, when the dirt accumulation height is equal to the height of the other end of the lower bracket 20, it is specified as the threshold value of the dirt amount, thereby avoiding excessive accumulation of dirt in the filter assembly 3 and causing water backflow.

[0067] Of course, in other embodiments, the upper bracket 10 may be located inside the connection box 1 and outside the filter assembly 3, and the light may be received by the receiving end through the filter hole of the filter assembly 3. In other embodiments, the upper bracket 10 may also be arranged horizontally, as long as the transmitting end and the receiving end can be arranged one-to-one.

[0068] Of course, in other embodiments, a plurality of transmitting ends may be arranged at intervals along the length direction of the lower bracket 20 , and a plurality of receiving ends may be arranged at intervals along the length direction of the upper bracket 10 .

[0069] In this embodiment, the second sensor may also be an optical distance sensor or an infrared distance sensor. Of course, in other embodiments, the second sensor may also be a pressure sensor disposed in the filter assembly 3. The pressure sensor may be disposed at the lower end of the filter assembly 3. When no water is discharged from the first drain pipe 2, the pressure value detected by the pressure sensor is relatively stable and can truly reflect the amount of dirt accumulated in the filter assembly 3. When the pressure value detected by the pressure sensor reaches a certain value, the user is reminded to clean the filter assembly 3. Of course, the second sensor may also be other types of sensors, as long as they can detect the amount of dirt accumulated in the filter assembly 3.

[0070] The dishwasher may further include a controller and a display panel, wherein the controller is electrically connected to the display panel, the first sensor 30 and the second sensor, so that the control panel can directly display the amount of dirt.

[0071] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A dishwasher cleaning structure, characterized in that: include: A connection box (1) is arranged on a housing (8) of the dishwasher and is disposed close to a front wall (81) of the housing (8); the connection box (1) is connected to a sewer; A first drain pipe (2) configured to connect the sink (9) of the dishwasher and the connection box (1); A filter assembly (3) which can slide forward and backward through the front side wall (11) of the connection box (1) to selectively connect to the water outlet end of the first drain pipe (2) to filter the water discharged from the first drain pipe (2); A second sensor is provided in the connection box (1) and is configured to detect the amount of dirt accumulated in the filter assembly (3); The second sensor includes a plurality of transmitting ends and a plurality of receiving ends; the dishwasher cleaning structure also includes: An upper bracket (10), one end of which is connected to the connection box (1), and one of the plurality of transmitting ends and one of the plurality of receiving ends are arranged at intervals along the length direction of the upper bracket (10); A lower bracket (20), one end of which is connected to the connection box (1), the lower bracket (20) is arranged to be tilted up and down from one end to the other end, the upper bracket (10) and the lower bracket (20) are arranged at intervals above and below, the multiple transmitting ends and another one of the multiple receiving ends are arranged at intervals along the length direction of the lower bracket (20), and the transmitting ends correspond to the receiving ends one by one; The filter assembly (3) is horizontally arranged in the connection box (1), and the lower bracket (20) is located in the filter assembly (3).

2. The dishwasher cleaning structure according to claim 1, characterized in that: The filter assembly (3) comprises: A filter body (31), wherein the connection box (1) is provided with a docking disc seat (4) located in the circumferential direction of the water outlet end, and the filter body (31) is a cylindrical structure, and can be rotated to a first position connected to the docking disc seat (4), and to a second position detached from the docking disc seat (4).

3. The dishwasher cleaning structure according to claim 1, characterized in that: A water flow regulating member is also provided in the connection box (1), and the water flow regulating member is configured to reduce the water flow intensity at the water outlet.

4. The dishwasher cleaning structure according to claim 3, characterized in that: The water flow regulating member is an elastic tongue (5), the lower end of the elastic tongue (5) is connected to the connection box (1), and the upper end of the elastic tongue (5) covers the water outlet.

5. The dishwasher cleaning structure according to claim 4, characterized in that: A first sensor (30) is provided on the side of the elastic tongue (5) facing away from the water outlet end, and the first sensor (30) is configured to detect whether water in the connection box (1) flows back to the first drain pipe (2).

6. The dishwasher cleaning structure according to claim 1, characterized in that: One end of the upper bracket (10) is located above the water outlet end and gradually tilts downward from one end to the other end; One end of the lower bracket (20) is located at the lower end of the water outlet and gradually tilts upward from one end to the other end, and the other end of the upper bracket (10) is connected to the other end of the lower bracket (20); The upper bracket (10) and the lower bracket (20) are both located inside the filter assembly (3).

7. The dishwasher cleaning structure according to claim 1, characterized in that: The transmitting end is a light transmitter, and the receiving end is a light detection element.

8. A dishwasher, characterized in that: The invention comprises the dishwasher cleaning structure as described in any one of claims 1 to 7.

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