Cleaning machine

Abstract

The utility model relates to a cleaning machine which comprises a box body and a water pump, the bottom of the box body is provided with a concave water return area, the water pump is arranged in the water return area, the bottom of the water pump is provided with a water inlet, the bottom wall of the water pump is provided with a plurality of blocking ribs used for blocking residues outside the water inlet, and the blocking ribs are arranged along the periphery of the water inlet at intervals. The blocking ribs used for blocking residues outside the water inlet are arranged on the bottom wall of the water pump, the multiple blocking ribs are arranged along the periphery of the water outlet at intervals, return water is filtered and blocked through the blocking ribs before entering the water pump, the residues can be prevented from entering the water pump to participate in water circulation, water pumping efficiency can be improved, and secondary pollution can be eliminated; meanwhile, the blocking ribs can comb and guide water flow flowing into the water inlet, the water flow energy loss can be reduced, and the water pumping efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, in particular to a washing machine used for washing tableware, fruits and vegetables. Background Art

[0002] Dishwashers have been widely used in home kitchens. Dishwashers are generally provided with a spray arm for spraying water, a concave water return area is provided at the bottom of the cabinet, the top of the water return area is covered with a filter plate, and a water pump is used to pump water from the water return area to the spray arm above the filter plate to realize the circulation spraying of washing water.

[0003] Using an open water pump to draw water for the spray arm can greatly shorten the return water path, improve the return water efficiency, and facilitate the maintenance of the water pump. "An open water pump and cleaning machine" (application number: CN202211216848.9) with publication number CN115573915A discloses a structure in which a concave return water area is provided at the bottom of the box body, and the top of the return water area is covered with a filter plate. The open water pump is arranged in the return water area, and there is a water suction gap between the water suction port at the bottom of the pump housing and the bottom of the return water area. The first water outlet at the top of the pump housing is located above the filter plate and is connected to the water inlet of the first spray arm. The second spray arm is arranged in the upper middle part of the box body and is connected to the second water outlet of the pump housing through a water supply pipe.

[0004] The above-mentioned open water pump has a water suction port opened on the bottom wall of the pump casing, and there is a water suction gap between the bottom wall of the pump casing and the bottom wall in the return water area. The water suction port and the water suction gap cooperate to form a ring suction water inlet for the water pump. Since the water suction port is directly connected to the return water area, when there is still residue in the water in the return water area after being filtered by the slag collection basket, the residue will enter the water pump through the water suction port to participate in the circulation, which not only affects the pumping efficiency, but also may cause secondary pollution. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a cleaning machine which can prevent residues from participating in water circulation, thereby improving water pumping efficiency and eliminating secondary pollution, in view of the current status of the prior art.

[0006] The technical solution adopted by the utility model to solve the above technical problems is:

[0007] A cleaning machine comprises a box body and a water pump, wherein a concave water return area is arranged at the bottom of the box body, the water pump is arranged in the water return area and has a water inlet at the bottom, and a retaining rib for blocking residue outside the water inlet is arranged on the bottom wall of the water pump, wherein the retaining rib is multiple and is arranged at intervals along the periphery of the water inlet.

[0008] Preferably, the water pump is offset in the return water area, and a flow channel is formed between the bottom wall of the water pump and the bottom wall in the return water area, which gradually expands and extends around the water inlet in the direction of the incoming water, and the retaining ribs are arranged at the edge of the water inlet in the flow channel corresponding to the incoming water direction. The water pump of the utility model is offset in the return water area, and the flow channel can gather the water in the return water area to the water inlet, play a role in pressurization and diversion, which is beneficial to improve the return water effect; the retaining ribs located at the edge of the water inlet and corresponding to the incoming water direction of the flow channel can filter and block the return water, and at the same time comb the inlet direction, which is beneficial to avoid water flow turbulence and reduce water flow energy loss.

[0009] Preferably, the bottom wall of the water pump is provided with a vertically extending rib, which encloses the flow channel, and at least part of the flow channel forms a fan-shaped structure, the arc portion of the fan-shaped structure surrounds the first side edge of the water inlet, and the retaining ribs are arranged at intervals at the second side edge of the water inlet opposite to the first side edge. The arc portion of the fan-shaped structure is used to block the water flow, and the retaining ribs are arranged relative to the arc portion, which is conducive to fully filtering the return water flowing to the water inlet to block the residue, and preventing the residue from entering the water pump and participating in the circulation.

[0010] Preferably, the retaining edge includes an arc segment, a first side segment, and a second side segment, the arc segment surrounds the first side edge of the water inlet, the first end of the first side segment is connected to the first end of the arc segment, and the second end extends toward the edge of the water pump, the first end of the second side segment is connected to the second end of the arc segment, and the second end extends toward the edge of the water pump, and the arc segment and the first side segment and the second side segment together enclose the fan-shaped structure. The above structure is conducive to improving the flow channel gathering effect, facilitating pressurization and diversion of return water, and reducing water flow energy loss.

[0011] Preferably, the top of the water pump is provided with a water outlet which is offset relative to the center of the water pump and extends to the central part of the water return area. Preferably, a slag collection basket and a heating element are also provided in the water return area. From a top view, the water pump, the slag collection basket and the heating element are arranged in a herringbone structure, and the side wall of the water return area is surrounded by the periphery of the herringbone structure to form a triangular structure, wherein the water outlet of the water pump extends to the central part of the herringbone structure.

[0012] The return water area of ​​the existing washing machine is semicircular in shape as a whole. Considering that the spray arm needs to be arranged in the center relative to the box body in order to better cover the tableware cleaning range, the return water area needs to be offset on the bottom wall of the box body, and the debris collecting basket located next to the spray arm is also offset on the bottom wall of the box body. During the return water process, the ideal effect is that the return water enters the return water area after filtering the residue through the debris collecting basket, and then is further drawn into the spray arm through the water suction port of the open water pump in the return water area. However, since the debris collecting basket is offset too far from the bottom wall of the box body, the return water enters the return water area before flowing to the debris collecting basket, resulting in poor debris collection effect and residue retention problems on the filter plate. At the same time, the structure of the return water area of ​​the existing cleaning machine determines that the heating element located beside the water pump is also offset on the bottom wall of the box. In order to improve the heating efficiency, it is necessary to make the heating element have a corresponding return water area. This requires the return water area to have a volume that meets the installation requirements of the heating element and the slag collection basket, which makes it difficult to reduce the total volume of the return water chamber, resulting in a certain amount of water waste, affecting the water efficiency of the cleaning machine. The utility model sets the return water area as a triangular structure, and uses each corner area of ​​the triangular structure to install the water pump, the slag collection basket, and the heating element, and then guides the outlet water to the remaining space in the central part of the triangular structure through the offset outlet of the water pump, so as to maximize the use of the space of the return water area, which not only greatly reduces the volume of the return water area, which is beneficial to saving the amount of washing water each time, but also helps to improve the return water speed and water efficiency; because the water pump no longer occupies the central part of the bottom of the cleaning machine, the slag collection basket can be closer to the central part of the bottom of the cleaning machine, which is beneficial to improve the slag collection effect.

[0013] Preferably, the inlet of the flow channel is arranged toward the slag collection basket and the heating element, the first side of the flow channel inlet corresponds to the periphery of the slag collection basket, and the second side of the flow channel inlet corresponds to the periphery of the heating element. This structure is conducive to improving the slag collection effect and the heating effect.

[0014] Preferably, the retaining rib is a narrow and long structure, and the narrow and long structure extends radially around the water inlet. Further preferably, the retaining rib is a shuttle-shaped structure. The above structure facilitates the sorting and diversion of incoming water, so that the water flow direction is consistent with the flow direction of the flow channel, and on the basis of blocking slag, reduces water flow energy loss and improves water pump efficiency.

[0015] Preferably, a gap is formed between the bottom of the retaining rib and the bottom wall in the water return area, and the height of the gap is ≤3mm. Such a structure can avoid interference between the water pump and the bottom wall in the water return area during assembly, facilitate assembly of the water pump, and meet the slag blocking requirements.

[0016] Preferably, the spacing between two adjacent retaining ribs is ≤5 mm. With such a structure, the slag retaining requirement is met without affecting the water return performance of the water pump, and the slag retaining requirement and the water pump performance requirement can be better taken into account.

[0017] Compared with the prior art, the advantages of the utility model are: the utility model is provided with retaining ribs on the bottom wall of the water pump for blocking residues outside the water inlet, the retaining ribs are multiple and are arranged at intervals along the periphery of the water outlet, and the return water is filtered and blocked by the retaining ribs before entering the water pump, which can prevent the residues from entering the water pump and participating in the water circulation, which is beneficial to improving the water pumping efficiency and eliminating secondary pollution; at the same time, the retaining ribs can also comb and guide the water flow flowing into the water inlet, which is beneficial to reducing the energy loss of the water flow and further improving the water pumping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the water pump according to an embodiment of the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the bottom structure;

[0020] Figure 3 for Figure 1 Bottom view of

[0021] Figure 4 This is a schematic diagram of the structure of a cleaning machine according to an embodiment of the utility model;

[0022] Figure 5 This is a diagram showing the assembly relationship between the water pump and the water return area in an embodiment of the utility model. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] The cleaning machine of this embodiment adopts an open water pump and water flow system, that is, the water pump is installed in the return water area of ​​the cleaning machine, and no external pipe is required to guide water. The water in the return water area directly flows back through the water pump and the spray arm.

[0025] like Figures 1 to 5 As shown, the cleaning machine of this embodiment includes a casing 1 and a water pump 3. A concave water return area 21 is provided at the bottom of the casing 1. The water pump 3 is arranged in the water return area 21 and has a water inlet 33 at the bottom. A retaining rib 36 for blocking residues outside the water inlet 33 is provided on the bottom wall of the water pump 3. The retaining rib 36 is in plurality and is arranged at intervals along the periphery of the water inlet 33.

[0026] The water pump 3 is offset in the water return area 21, and a flow channel 37 is formed between the bottom wall of the water pump 3 and the inner bottom wall of the water return area 21, which gradually expands and extends around the water inlet 33 in the direction of the incoming water. The retaining ribs 36 are arranged at the edge of the water inlet 33 in the flow channel 37 corresponding to the incoming water direction. The water pump 3 of this embodiment is offset in the water return area 21, and the flow channel 37 can gather the water in the water return area 21 to the water inlet 33, which plays a role in pressurization and diversion, and is conducive to improving the water return effect; the retaining ribs 36 located at the edge of the water inlet 33 and corresponding to the incoming water direction of the flow channel 37 can filter and block the return water, and at the same time comb the incoming water direction, which is conducive to avoiding water flow turbulence and reducing water flow energy loss.

[0027] The bottom wall of the water pump 3 is provided with a vertically extending retaining edge 38, which encloses the flow channel 37. The flow channel 37 forms a fan-shaped structure corresponding to the bottom wall of the water pump 3. The arc portion of the fan-shaped structure surrounds the first side edge of the water inlet 33, and the retaining ribs 36 are arranged at intervals at the second side edge of the water inlet 33 opposite to the first side edge. The arc portion of the fan-shaped structure is used to block the water flow, and the retaining ribs are arranged relative to the arc portion, which is conducive to fully filtering the return water flowing to the water inlet and blocking the residue, so as to prevent the residue from entering the water pump and participating in the circulation. The retaining edge 38 includes an arc segment 383, a first side segment 381, and a second side segment 382. The arc segment 383 surrounds the first side edge of the water inlet 33. The first end of the first side segment 381 is connected to the first end of the arc segment 383, and the second end extends toward the edge of the water pump 3. The first end of the second side segment 382 is connected to the second end of the arc segment 381, and the second end extends toward the edge of the water pump 3. The arc segment 383, the first side segment 381, and the second side segment 382 together enclose a fan-shaped structure. The above structure is conducive to improving the flow channel gathering effect, facilitating pressurization and diversion of return water, and reducing water flow energy loss.

[0028] The top of the water pump 3 is provided with a water outlet 31 which is offset relative to the center of the water pump 3 and extends to the central part of the water return area 21. The water return area 21 is also provided with a slag collection basket 4 and a heating element 5. From a top view, the water pump 3, the slag collection basket 4, and the heating element 5 are arranged in a herringbone structure. The side walls of the water return area 21 are enclosed in the periphery of the herringbone structure to form a triangular structure, wherein the water outlet 31 of the water pump 3 extends to the central part of the herringbone structure. The water return area 21 is arranged in the center of the bottom of the washing chamber of the cleaning machine. The water pump 3 is offset relative to the center of the bottom wall of the washing chamber. The first water outlet 31 of the water pump 3 is arranged corresponding to the central part of the bottom of the washing chamber.

[0029] The water pump 3 of this embodiment has a disc-shaped body, and the water inlet 33 is opened in the central part of the bottom wall of the body. The side of the body is provided with a first flow channel 34 and a second flow channel 35 extending in a circumferential spiral. The end of the first flow channel 34 extends upward to form a first water outlet, which is the above-mentioned water outlet 31, and the end of the second flow channel 35 forms a second water outlet 351 located on the side of the water pump 3. The above structure enables the water pump to have two water outlets in different directions to meet the water supply requirements of two routes. The top wall of the water pump 3 is provided with a water guide section 32 extending upward at the end corresponding to the first flow channel 34, and the upper end of the water guide section 32 is the first water outlet.

[0030] In this embodiment, the inlet of the flow channel 37 is arranged toward the slag collecting basket 4 and the heating element 5, the first side of the inlet of the flow channel 37 corresponds to the periphery of the slag collecting basket 4, and the second side of the inlet of the flow channel 37 corresponds to the periphery of the heating element 5. This structure is conducive to improving the slag collecting effect and the heating effect.

[0031] The retaining rib 36 of this embodiment is a narrow and long structure, and the narrow and long structure extends radially around the water inlet 33. The retaining rib 36 of this embodiment is a shuttle-shaped structure, but it is certainly not limited to this structure, and can also be a rhombus-shaped structure, a rectangular structure with sharp ends, etc. The above structure is convenient for combing and guiding the incoming water, so that the water flow direction is consistent with the convergence direction of the flow channel, and on the basis of blocking slag, the water flow energy loss is reduced and the water pump efficiency is improved.

[0032] A gap 100 is formed between the bottom of the retaining rib 36 of this embodiment and the bottom wall of the water return area 21, and the height of the gap 100 is ≤3 mm. With such a structure, interference between the water pump 3 and the bottom wall of the water return area 21 during assembly is avoided, which facilitates the assembly of the water pump 3 and meets the slag blocking requirements.

[0033] The spacing between two adjacent retaining ribs 36 is ≤5 mm. With such a structure, the slag retaining requirement is met without affecting the water return performance of the water pump 3, and the slag retaining requirement and the water pump performance requirement can be better taken into account.

[0034] In this embodiment, a retaining rib 36 is provided on the bottom wall of the water pump 3 for blocking residue outside the water inlet 33. The retaining rib 36 is multiple and is arranged at intervals along the periphery of the water outlet 33. Before the return water enters the water pump 3, it is filtered and blocked by the retaining rib 36, which can prevent the residue from entering the water pump 3 and participating in the water circulation, which is beneficial to improving the water pumping efficiency and eliminating secondary pollution. At the same time, the retaining rib 36 can also comb and guide the water flow flowing into the water inlet 33, which is beneficial to reducing the energy loss of the water flow and further improving the water pumping efficiency.

[0035] The center offset in this embodiment refers to an offset in the horizontal direction.

[0036] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A cleaning machine, comprising a housing (1) and a water pump (3), wherein a concave water return area (21) is provided at the bottom of the housing (1), and the water pump (3) is arranged in the water return area (21) and has a water inlet (33) at the bottom. Features: The bottom wall of the water pump (3) is provided with retaining ribs (36) for retaining residues outside the water inlet (33); the retaining ribs (36) are in plurality and are arranged at intervals along the periphery of the water inlet (33).

2. The cleaning machine according to claim 1, Features: The water pump (3) is offset in the water return area (21), and a flow channel (37) is formed between the bottom wall of the water pump (3) and the inner bottom wall of the water return area (21), which gradually expands and extends around the water inlet (33) in the direction of the incoming water, and the retaining rib (36) is arranged in the flow channel (37) at the edge of the water inlet (33) corresponding to the direction of the incoming water.

3. The cleaning machine according to claim 2, Features: The bottom wall of the water pump (3) is provided with a vertically extending retaining edge (38), the retaining edge (38) enclosing the flow channel (37), the flow channel (37) at least partially forming a fan-shaped structure, the arc portion of the fan-shaped structure surrounds the first side edge of the water inlet (33), and the retaining ribs (36) are arranged at intervals at the second side edge of the water inlet (33) opposite to the first side edge.

4. The cleaning machine according to claim 3, Features: The retaining edge (38) comprises an arc segment (383), a first edge segment (381), and a second edge segment (382); the arc segment (383) surrounds the first side edge of the water inlet (33); the first end of the first edge segment (381) is connected to the first end of the arc segment (383), and the second end extends toward the edge of the water pump (3); the first end of the second edge segment (382) is connected to the second end of the arc segment (383), and the second end extends toward the edge of the water pump (3); the arc segment (383), the first edge segment (381), and the second edge segment (382) together enclose the fan-shaped structure.

5. The cleaning machine according to claim 2, Features: The top of the water pump (3) is provided with a water outlet (31) which is offset relative to the center of the water pump (3) and extends to the central part of the water return area (21).

6. The cleaning machine according to claim 5, Features: A slag collecting basket (4) and a heating element (5) are also provided in the water return area (21). When viewed from a top view, the water pump (3), the slag collecting basket (4) and the heating element (5) are arranged in a herringbone structure. The side walls of the water return area (21) are enclosed at the periphery of the herringbone structure to form a triangular structure, wherein the water outlet (31) of the water pump (3) extends to the central portion of the herringbone structure.

7. The cleaning machine according to claim 6, Features: The inlet of the flow channel is arranged toward the slag collecting basket (4) and the heating element (5), the first side of the inlet of the flow channel corresponds to the periphery of the slag collecting basket (4), and the second side of the inlet of the flow channel corresponds to the periphery of the heating element (5).

8. The cleaning machine according to any one of claims 1 to 7, Features: The retaining rib (36) is a long and narrow structure, and the long and narrow structure extends along the radial direction of the water inlet (33) at the periphery of the water inlet (33).

9. The cleaning machine according to claim 8, Features: The retaining rib (36) is a shuttle-shaped structure.

10. The cleaning machine according to any one of claims 1 to 7, Features: A gap (100) is formed between the bottom of the retaining rib (36) and the inner bottom wall of the water return area (21), and the height of the gap (100) is ≤3 mm.

11. The cleaning machine according to any one of claims 1 to 7, Features: The distance between two adjacent retaining ribs (36) is ≤5 mm.

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