Cleaning machine

Abstract

The utility model relates to a cleaning machine which comprises a box body, a water pump and an inner water pipe, a concave water return area is arranged at the bottom of the box body, a filter plate covers the top of the water return area, the water pump is arranged in the water return area, and the lower end of the inner water pipe penetrates through the filter plate to be connected with the water pump. The water pump is provided with a first flow channel extending towards the edge of the water return area, the tail end of the first flow channel is bent upwards, and the lower end of the inner water pipe and the upwards-bent part of the first flow channel are sealed in an inserted fit mode. The lower end of the inner water pipe is directly connected with the open type water pump arranged in the water return area in an inserted mode, only the position needs to be sealed, the radial sealing is adopted between the inner water pipe and the first flow channel of the water pump, the radial sealing conforms to the water flow direction, effective sealing can be achieved through a simple sealing structure, and the sealing effect is good. And water flow energy loss can be reduced, so that the water pumping effect is 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] At present, dishwashers with larger capacity generally have at least two layers of spray arms, the lower spray arm is used to clean the lower space of the dishwasher, and the upper spray arm is used to clean the upper space of the dishwasher. For example, in the structure disclosed in the Chinese invention patent application "Dishwasher and Control Method of Dishwasher" (application number: CN202110178295.1) with application publication number CN112914467A, the water distribution device is connected to the return water area of ​​the dishwasher, and the first water supply pipeline and the second water supply pipeline are respectively connected to the output end of the water distribution device for further supplying water upward.

[0003] The existing water supply pipeline generally needs to pass through the filter plate and connect to the water outlet of the water pump through the water distribution device or the water cup transition area. Such a structure requires at least two sealed connections, one is the sealed connection between the water pump outlet and the water distribution device or the water cup transition area, and the other is the sealed connection between the inner water pipe and the water distribution device or the water pump transition area. The extra sealing structure not only makes the assembly unchanged, but also the extra bending and sealing connection of the water channel easily causes further loss of fluid energy, affecting the pumping effect.

[0004] Therefore, the water connection structure between the inner water pipe and the water pump in the current cleaning machine needs to be further improved. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a cleaning machine with an inner water pipe and a water pump which are easy to disassemble and assemble and can reduce the energy loss of water flow to improve the water pumping effect 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, a water pump and an inner water pipe, wherein a concave water return area is arranged at the bottom of the box body, and the top of the water return area is covered with a filter plate, the water pump is arranged in the water return area, and the lower end of the inner water pipe passes through the filter plate and is connected to the water pump, characterized in that: the water pump is provided with a first flow channel extending to the edge of the water return area, the end of the first flow channel is bent upward, and the lower end of the inner water pipe is plugged and sealed with the upward bent part of the first flow channel.

[0008] The utility model directly plugs and connects the lower end of the inner water pipe with the open water pump arranged in the return water area, and it only needs to be sealed at this location. Moreover, since radial sealing is adopted between the inner water pipe and the first flow channel of the water pump, which is consistent with the direction of water flow, it is not only conducive to achieving effective sealing through a simple sealing structure, but also can reduce the energy loss of water flow, thereby improving the water pumping effect.

[0009] Preferably, the inner water pipe includes a vertical portion extending close to the inner wall of the box body, and a transverse portion extending from the lower end of the vertical portion close to the inner bottom wall of the box body to the water return area, and the end of the transverse portion is bent downward and passes through the filter plate to be plugged into the upper end of the first flow channel. Preferably, the end of the first flow channel is bent upward to form an assembly sleeve, and the end of the transverse portion of the inner water pipe is bent downward to form a plug-in portion, which passes through the filter plate and is inserted into the assembly sleeve. With the above structure, the inner water pipe can be assembled more compactly inside the box body, thereby avoiding interference with the spray arm, bowl rack, etc., and eliminating the impact on water injection and backflow.

[0010] Preferably, the diameter of the assembly sleeve is larger than the diameter of the first flow channel and an assembly platform is formed at the joint, and the lower end of the plug-in portion abuts against the assembly platform. This structure can not only limit the depth of the plug-in portion inserted into the assembly sleeve, but also, under the pressure of the filter plate, the lower end of the plug-in portion always abuts tightly against the assembly platform, which is conducive to improving the sealing performance.

[0011] Further preferably, the outer periphery of the plug-in part is provided with a circumferentially arranged card groove, and a sealing ring is provided in the card groove. When the plug-in part and the assembly sleeve are plugged together, the sealing ring is elastically squeezed between the outer peripheral wall of the plug-in part and the inner peripheral wall of the assembly sleeve. This structure is conducive to cooperation with the assembly table and further improves the sealing performance.

[0012] Preferably, the plug-in portion and the transverse portion are smoothly connected; the first flow channel and the lower end of the assembly sleeve are smoothly connected. This structure is conducive to reducing water flow energy loss.

[0013] Preferably, the filter plate is provided with a socket for the plug-in part to pass through, and in the assembled state, the upper end of the plug-in part forms a limit connection with the filter plate in the up and down directions. Further preferably, the filter plate is locked at the bottom of the box body, and the outer periphery of the plug-in part is provided with a buckle that allows the plug-in part to pass through the socket from top to bottom and engage with the lower surface of the filter plate for limit. The above structure is not only convenient for limiting the filter plate and the inner water pipe, but also, the lower end of the inner water pipe is always pressed tightly against the first flow channel of the water pump by using the above limit structure, which is conducive to improving assembly reliability and ensuring sealing.

[0014] In the utility model, the water pump is disc-shaped, a water inlet is provided at the bottom of the water pump, and a first flow channel and a second flow channel extending outward in the circumferential direction are provided on the side of the water pump, the first flow channel is connected to the inner water pipe, and the second flow channel is used to supply water to the bottom spray arm provided at the lower part of the box body. The first flow channel supplies water to the upper spray arm provided at the middle and upper part of the box body through the inner water pipe. With the above structure, it is convenient to supply water to two groups of spray arms respectively through an open water pump provided in the return water area, which simplifies the overall structure and meets the water supply demand.

[0015] Preferably, the second flow channel is bent upward at its end to form a water guide portion, the water guide portion is arranged corresponding to the center of the box, and the bottom of the bottom spray arm is provided with a downward extension and plugged and connected to the water guide portion. The water outlet of the second flow channel is arranged at the bottom of the box, which is convenient for supplying water to the bottom spray arm arranged in the center, thereby expanding the spray range of the bottom spray arm and improving the cleaning effect.

[0016] Preferably, from a top view, the water return area is a triangular structure with a smooth transition of corners, and each angle and the adjacent straight edge constrain a first installation area, a second installation area, and a third installation area, wherein the first installation area is used to install a water pump, the second installation area is used to install a heating element, and the third installation area is used to install a slag collection basket, and the inner water pipe is arranged near the straight edge of the water return area corresponding to the water pump and the heating element. The water return area is set as a triangular structure, and each corner area of ​​the triangular structure is used to install a water pump, a slag collection basket, and a heating element, and then the water outlet is guided to the remaining space in the central part of the triangular structure through the offset water outlet of the water pump, so that the space of the water return area is utilized to the maximum extent, which not only greatly reduces the volume of the water return area, which is conducive to saving the amount of washing water each time, but also helps to improve the water return speed and water efficiency; since the water pump no longer occupies the central part of the bottom of the washing machine, only the water pump outlet is arranged in the center, and the space occupied by the latter is much smaller than the water pump itself, so that the water return area and the slag collection basket are greatly close to the central part of the bottom of the washing machine, which is conducive to improving the water return efficiency and slag collection effect.

[0017] Preferably, the filter plate includes a first part and a second part that can be relatively spliced, the first part is formed into a triangular structure, the first side of the triangular structure is arranged close to the straight sides of the water pump and the heating element in the return water area, the second side of the triangular structure is arranged corresponding to the outer edge of the water pump, and the third side of the triangular structure is arranged corresponding to the outer edge of the heating element. The first part is locked at the bottom of the box, and at least part of the second part is detachably buckled on the top of the return water area. More preferably, the triangular structure is an obtuse triangle structure, the length of the first side is greater than the second side and the third side, and from a top view, the water pump, the heating element, and the slag collection basket are all located outside the coverage area of ​​the first part of the filter plate. The filter plate with the above structure is convenient for fixing the inner water pipe using the first part with a small area, while the second part with a larger area is convenient for disassembly and assembly, so as to facilitate the installation and subsequent maintenance of the water pump, the heating element, and the slag collection basket in the return water area.

[0018] For easy installation, the first part is fastened to the bottom of the box by screws.

[0019] Preferably, when the second part is separated from the top of the water return area, the water pump is exposed outside the first part of the filter plate, and a detachable upper cover capable of opening or closing the inner cavity of the water pump is provided on the top of the water pump. With such a structure, it is convenient to install the impeller of the water pump into the pump cavity from the top of the water pump, and it is also convenient to maintain and repair the water pump when it fails.

[0020] Compared with the prior art, the advantages of the utility model are: the utility model directly plugs and connects the lower end of the inner water pipe with the open water pump arranged in the return water area, and only needs to be sealed at this point, and because radial sealing is adopted between the inner water pipe and the first flow channel of the water pump, which is consistent with the direction of water flow, it is not only conducive to achieving effective sealing through a simple sealing structure, but also can reduce water flow energy loss, thereby improving the water pumping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0022] Figure 2 for Figure 1 A partial enlarged view of

[0023] Figure 3 A cross-sectional view of an embodiment of the utility model;

[0024] Figure 4 This is a partial structural schematic diagram of the inner water pipe in the embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of a water pump in an embodiment of the utility model;

[0026] Figure 6 for Figure 5 Schematic diagram of the bottom structure. DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0028] like Figures 1 to 6 As shown, the cleaning machine of this embodiment includes a box body 1, a water pump 2 and an inner water pipe 3. A concave water return area 11 is provided at the bottom of the box body 1. The top of the water return area 11 is covered with a filter plate 4. The water pump 2 is arranged in the water return area 11. The lower end of the inner water pipe 3 passes through the filter plate 4 and is connected to the water pump 2.

[0029] The water pump 2 is disc-shaped, and a water suction port 23 is provided at the bottom of the water pump 2. The side of the water pump 2 is provided with a first flow channel 21 and a second flow channel 22 extending outward in the circumferential direction. The first flow channel 21 is connected to the inner water pipe 3, and the second flow channel 22 is used to supply water to the bottom spray arm provided at the lower part of the box body 1. The first flow channel 21 supplies water to the upper spray arm provided at the middle and upper part of the box body 1 through the inner water pipe 3. The above structure makes it easy to supply water to two groups of spray arms through an open water pump 2 provided in the return water area 11, thereby simplifying the overall structure and meeting the water supply demand.

[0030] In this embodiment, the first flow channel 21 extends from the side of the water pump 2 to the edge of the return water area 11. The end of the first flow channel 21 is bent upward, and the lower end of the inner water pipe 3 is plugged and sealed with the upwardly bent part of the first flow channel 21.

[0031] Specifically, the inner water pipe 3 includes a vertical portion 31 extending close to the inner side wall of the box body 1, and a transverse portion 32 extending from the lower end of the vertical portion 31 close to the inner bottom wall of the box body 1 to the water return area 11. The end of the transverse portion 32 is bent downward and passes through the filter plate 4 to be plugged into the upper end of the first flow channel 21. The end of the first flow channel 21 is bent upward to form an assembly sleeve 211, and the end of the transverse portion 32 of the inner water pipe 3 is bent downward to form an insertion portion 33, which passes through the filter plate 4 and is inserted into the assembly sleeve 211. The above structure allows the inner water pipe 3 to be assembled more compactly in the box body 1, thereby avoiding interference with the spray arm, bowl rack, etc., and eliminating the impact on water jetting and backflow.

[0032] The diameter of the assembly sleeve 211 is larger than the diameter of the first flow channel 21 and forms an assembly platform 212 at the joint, and the lower end of the plug-in portion 33 abuts against the assembly platform 212. This structure can not only limit the depth of the plug-in portion 33 inserted into the assembly sleeve 211, but also, under the pressure of the filter plate 4, the lower end of the plug-in portion 33 always tightly abuts against the assembly platform 212, which is conducive to improving the sealing performance.

[0033] The outer periphery of the plug-in part 33 is provided with a slot 331 arranged along the circumferential direction, and a sealing ring 34 is provided in the slot 331. When the plug-in part 33 and the assembly sleeve 211 are plugged together, the sealing ring 34 is elastically squeezed between the outer peripheral wall of the plug-in part 33 and the inner peripheral wall of the assembly sleeve 211. This structure is conducive to matching with the assembly platform 212, and further improving the sealing performance. The plug-in part 33 and the transverse part 32 are smoothly transitioned and connected; the first flow channel 21 and the lower end of the assembly sleeve 211 are smoothly transitioned and connected. This structure is conducive to reducing the energy loss of water flow.

[0034] The filter plate 4 is provided with a socket 41 for the plug-in portion 33 to pass through. When the assembly is completed, the upper end of the plug-in portion 33 forms a limit connection with the filter plate 4 in the up-down direction. The filter plate 4 of this embodiment is locked at the bottom of the box body 1, and the outer periphery of the plug-in portion 33 is provided with a buckle 332 that allows the plug-in portion 33 to pass through the socket 41 from top to bottom and engage with the lower surface of the filter plate 4. The above structure is not only convenient for limiting the filter plate 4 and the inner water pipe 3, but also, the lower end of the inner water pipe 3 is always pressed tightly against the first flow channel 21 of the water pump 2 by using the above limit structure, which is conducive to improving assembly reliability and ensuring sealing.

[0035] The second flow channel 22 is bent upward at its end to form a water guide 221, and the water guide 221 is arranged corresponding to the center of the box body 1. The bottom of the bottom spray arm is provided with a downward extension and plugged and connected to the water guide 221. The water outlet of the second flow channel 22 is arranged at the bottom of the box body 1, which is convenient for supplying water to the bottom spray arm arranged in the center, thereby expanding the spray range of the bottom spray arm and improving the cleaning effect.

[0036] In this embodiment, when viewed from above, the return water area 11 is a triangular structure with smooth corner transitions, and each angle and the adjacent straight edge constrain a first installation area 10, a second installation area 20, and a third installation area 30. The first installation area 10 is used to install the water pump 2, the second installation area 20 is used to install the heating element 5, and the third installation area 30 is used to install the slag collecting basket 6. The inner water pipe 3 is arranged close to the straight edge of the return water area 11 corresponding to the water pump 2 and the heating element 5. The water return area 11 is set as a triangular structure, and the water pump 2, the slag collecting basket 6, and the heating element 5 are installed in each corner area of ​​the triangular structure respectively, and then the outlet water is guided to the remaining space in the central part of the triangular structure through the offset water outlet extending outward from the side of the water pump 2, so that the space of the water return area 11 is utilized to the maximum extent, which not only greatly reduces the volume of the water return area 11, which is beneficial to saving the amount of washing water each time, but also helps to improve the water return speed and water efficiency; because the water pump 2 no longer occupies the central part of the bottom of the cleaning machine, only the water outlet of the water pump 2 is arranged in the center, and the space occupied by the latter is much smaller than the water pump itself, so that the water return area 11 and the slag collecting basket 6 are greatly approached to the central part of the bottom of the cleaning machine, which is beneficial to improve the water return efficiency and the slag collecting effect.

[0037] The filter plate 4 of this embodiment includes a first part (i.e., the part shown in the drawings of this embodiment) and a second part (not shown) that can be relatively spliced. The first part is formed into a triangular structure. The first side of the triangular structure is arranged close to the backwater area 11 and corresponds to the straight sides of the water pump 2 and the heating element 5. The second side of the triangular structure corresponds to the outer edge of the water pump 2. The third side of the triangular structure corresponds to the outer edge of the heating element 5. The first part is locked at the bottom of the box body 1 (locked at the bottom of the box body 1 by screws and threaded columns 42), and at least part of the second part is detachably buckled on the top of the backwater area 11. The triangular structure is an obtuse triangle structure. The length of the first side is greater than the second side and the third side. From a top view, the water pump 1, the heating element 5, and the slag collection basket 6 are all located outside the coverage area of ​​the first part of the filter plate 4. The filter plate 4 with the above structure is convenient for fixing the inner water pipe 3 using the first part with a small area, while the second part with a larger area is convenient for disassembly and assembly, so as to facilitate the installation and later maintenance of the water pump 2, the heating element 5, and the slag collection basket 6 in the backwater area 11.

[0038] When the second part is separated from the top of the water return area 11, the water pump 2 is exposed outside the first part of the filter plate 4, and a detachable upper cover 24 is provided on the top of the water pump 2 to open or close the inner cavity of the water pump 2. With such a structure, it is convenient to install the impeller 25 of the water pump 2 into the pump cavity from the top of the water pump 2, and it is also convenient to maintain and repair the water pump when it fails.

[0039] In this embodiment, the lower end of the inner water pipe 3 is directly plugged and connected to the open water pump 2 arranged in the return water area 11, and it is only necessary to seal at this location. In addition, since radial sealing is adopted between the inner water pipe 3 and the first flow channel 21 of the water pump 2, which is consistent with the direction of water flow, it is not only conducive to achieving effective sealing through a simple sealing structure, but also can reduce the energy loss of water flow, thereby improving the water pumping effect.

[0040] 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), a water pump (2) and an inner water pipe (3), wherein a concave water return area (11) is provided at the bottom of the housing (1), the top of the water return area (11) is covered with a filter plate (4), the water pump (2) is arranged in the water return area (11), and the lower end of the inner water pipe (3) passes through the filter plate (4) and is connected to the water pump (2), characterized in that: The water pump (2) is provided with a first flow channel (21) extending towards the edge of the water return area (11), the end of the first flow channel (21) is bent upward, and the lower end of the inner water pipe (3) is plugged and sealed with the upwardly bent portion of the first flow channel (21).

2. The cleaning machine according to claim 1, characterized in that: The inner water pipe (3) comprises a vertical portion (31) extending close to the inner side wall of the box body (1), and a transverse portion (32) extending from the lower end of the vertical portion (31) close to the inner bottom wall of the box body (1) toward the return water area (11), wherein the end of the transverse portion (32) is bent downward and passes through the filter plate (4) to be plugged into the upper end of the first flow channel (21).

3. The cleaning machine according to claim 2, characterized in that: The end of the first flow channel (21) is bent upward to form an assembly sleeve (211), and the end of the transverse portion (32) of the inner water pipe (3) is bent downward to form an inserting portion (33), which passes through the filter plate (4) and is inserted into the assembly sleeve (211).

4. The cleaning machine according to claim 3, characterized in that: The diameter of the assembly sleeve (211) is greater than the diameter of the first flow channel (21) and forms an assembly platform (212) at the connection point, and the lower end of the plug-in portion (33) abuts against the assembly platform (212).

5. The cleaning machine according to claim 3, characterized in that: The outer periphery of the plug-in portion (33) is provided with a circumferentially arranged slot (331), and a sealing ring (34) is provided in the slot (331). When the plug-in portion (33) and the assembly sleeve (211) are in an inserted state, the sealing ring (34) is elastically squeezed between the outer peripheral wall of the plug-in portion (33) and the inner peripheral wall of the assembly sleeve (211).

6. The cleaning machine according to claim 3, characterized in that: The plug-in portion (33) and the transverse portion (32) are smoothly transitioned and connected; the first flow channel (21) and the lower end of the assembly sleeve (211) are smoothly transitioned and connected.

7. The cleaning machine according to claim 3, characterized in that: The filter plate (4) is provided with a socket (41) for the plug-in portion (33) to pass through. In the assembled state, the upper end of the plug-in portion (33) forms a limit connection with the filter plate (4) in the up and down directions.

8. The cleaning machine according to claim 7, characterized in that: The filter plate (4) is locked at the bottom of the box body (1), and the outer periphery of the plug-in portion (33) is provided with a buckle (332) that enables the plug-in portion (33) to pass through the socket (41) from top to bottom and to be locked with the lower surface of the filter plate (4) to limit the position.

9. The cleaning machine according to any one of claims 1 to 8, characterized in that: The water pump (2) is disc-shaped, and a water suction port (23) is provided at the bottom of the water pump (2). A first flow channel (21) and a second flow channel (22) extending outwardly in a circumferential direction are provided on the side of the water pump (2). The first flow channel (21) is connected to the inner water pipe (3), and the second flow channel (22) is used to supply water to a bottom spray arm provided at the bottom of the box body (1).

10. The cleaning machine according to claim 9, characterized in that: The second flow channel (22) is bent upward at its end to form a water guide portion (221), and the water guide portion (221) is arranged corresponding to the center of the box body (1). The bottom of the bottom spray arm is provided with a downwardly extending portion that is plugged and connected to the water guide portion (221).

11. The cleaning machine according to any one of claims 1 to 8, characterized in that: Seen from a top view, the water return area (11) is a triangular structure with a smoothly rounded corner, and each angle and the adjacent straight edge constrain a first installation area (10), a second installation area (20), and a third installation area (30). The first installation area (10) is used to install a water pump (2), the second installation area (20) is used to install a heating element (5), and the third installation area (30) is used to install a slag collection basket (6). The inner water pipe (3) is arranged close to the straight edge of the water return area (11) corresponding to the water pump (2) and the heating element (5).

12. The cleaning machine according to claim 11, characterized in that: The filter plate (4) comprises a first part and a second part which can be relatively spliced, the first part being formed into a triangular structure, the first side of the triangular structure being close to the return water area (11) and corresponding to the straight sides of the water pump (2) and the heating element (5), the second side of the triangular structure being corresponding to the outer edge of the water pump (2), and the third side of the triangular structure being corresponding to the outer edge of the heating element (5), the first part being locked at the bottom of the box body (1), and at least part of the second part being detachably buckled at the top of the return water area (11).

13. The cleaning machine according to claim 12, characterized in that: The triangular structure is an obtuse triangle structure, the length of the first side is greater than the second side and the third side, and from a top view, the water pump (2), the heating element (5), and the slag collection basket (6) are all located outside the coverage area of ​​the first part of the filter plate (4).

14. The cleaning machine according to claim 12, characterized in that: The first part is fastened to the bottom of the box body (1) by means of screws.

15. The cleaning machine according to claim 12, characterized in that: When the second portion is detached from the top of the water return area (11), the water pump (2) is exposed outside the first portion of the filter plate (4), and a top cover (24) capable of opening or closing the inner cavity of the water pump (2) is detachably provided on the top of the water pump (2).

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