Cleaning machine

Abstract

The cleaning machine comprises a box body, a filter plate and a water pump, a concave water return area is arranged at the bottom of the box body, the filter plate covers the top of the water return area, the water pump is arranged in the water return area, the water pump is provided with a water guide pipe extending upwards, an opening for the water guide pipe to penetrate through is formed in the filter plate, and the water guide pipe is arranged in the opening. The edge of the opening extends upwards to form an assembling sleeve surrounding the periphery of the water guide pipe, and the upper end of the assembling sleeve is connected with the peripheral wall of the water guide pipe. The open type water pump is arranged in the water return area, the water guide pipe penetrating through the filter plate is arranged at the water outlet in the top of the water pump, meanwhile, the assembling sleeve which also extends to the position above the filter plate and is connected with the water guide pipe in a matched mode is integrally formed on the filter plate, and the assembling gap is moved upwards to be away from the gas-liquid severe exchange area. Therefore, the problem of air suction is effectively avoided, the water pumping efficiency and the jet lift are improved, and the cleaning 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] 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. The applicant's prior application "A Cleaning Machine" (Application Number: CN202011629762.X) discloses a structure, which includes a box body, a concave drain area is provided at the bottom of the box body, and the top of the drain area is covered with a drain plate. The lower part of the pumping mechanism is arranged in the drain area and is used to pump the drain area to the top of the drain plate. The upper part of the pumping mechanism passes through the drain plate and is located above the drain plate to connect the spray arm. The pumping mechanism and the drain plate overlap each other where the pumping mechanism passes. During the process of washing dishes, the liquid level is generally above the filter plate (i.e. the drain plate mentioned above) and below the spray arm, that is, this is where the gas-liquid collision is relatively strong. Due to the negative pressure generated under the filter plate under the suction force of the water pumping mechanism, it is easy to suck the gas from there into the drain area, resulting in a vacuum phenomenon. On the one hand, it seriously affects the water pumping efficiency. On the other hand, it causes irregular air to exist in the water pumped into the spray arm, affecting the injection head, and thus affecting the cleaning effect. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a cleaning machine which can effectively avoid air suction, thereby improving water pump efficiency and jet head and thus improving cleaning effect, in view of the current status of the prior art.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A cleaning machine comprises a box body, a filter plate and a water pump, wherein a concave water return area is arranged at the bottom of the box body, the filter plate covers the top of the water return area, the water pump is arranged in the water return area, the water pump is provided with a water pipe extending upward, an opening is opened on the filter plate for the water pipe to pass through, the edge of the opening extends upward to form an assembly set surrounding the outer periphery of the water pipe, and the upper end of the assembly set is connected to the outer peripheral wall of the water pipe.

[0007] Preferably, the height of the assembly sleeve is 7 to 20 mm. More preferably, the height of the assembly sleeve is 9 to 13 mm. The above structure is adopted to avoid air suction while ensuring sufficient water flow and water pressure.

[0008] Preferably, the outer peripheral wall of the water pipe is provided with a first convex ring extending radially outward, and correspondingly, the top edge of the assembly sleeve is provided with a second convex ring extending radially inward, and the second convex ring contacts and cooperates with the first convex ring. This structure facilitates the assembly and connection of the water pipe and the filter plate.

[0009] Further preferably, the second convex ring overlaps and cooperates with the first convex ring in an upper and lower manner. By using the second convex ring to press the first convex ring, a downward force can be applied to the water pump through the filter plate, which is beneficial to improving the assembly stability of the water pump in the water return area.

[0010] Preferably, the outer peripheral surface of the upper portion of the first bead forms a first inclined surface that gradually inclines radially inward from bottom to top, and correspondingly, the inner peripheral wall of the second bead forms a second inclined surface that can match the first inclined surface. The matching mode of the inclined surfaces can increase the contact surface and further improve the assembly stability and reliability.

[0011] Preferably, the lower portion of the first convex ring forms a support edge at the lower edge corresponding to the first inclined surface, and the bottom of the second convex ring abuts against the support edge. This structure can constrain the position of the filter plate to improve the assembly reliability of the two.

[0012] Preferably, the lower surface of the filter plate is provided with a sleeve arranged around the periphery of the water pipe, and a distance is provided between the lower end of the sleeve and the upper surface of the water pump. The sleeve is arranged corresponding to the periphery of the assembly sleeve, and the diameter of the sleeve is larger than the diameter of the assembly sleeve. The sleeve can improve the overall strength of the central part of the filter plate, thereby providing reliable support for the force coordination between the assembly sleeve and the water pipe.

[0013] Preferably, a water pump, a slag collection basket, and a heating element are installed 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. The side walls of the water return area are surrounded by the periphery of the herringbone structure, wherein the water pump is also provided with an offset water outlet and the water outlet extends to the central part of the herringbone structure. Specifically, the water return area is a triangular structure with a smooth transition at the corners. Each corner of the triangular structure encloses a first installation area, a second installation area, and a third installation area with the adjacent straight side parts. The first installation area is used to install the water pump, the second installation area is used to install the heating element, and the third installation area is used to install the slag collection basket.

[0014] 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.

[0015] Further preferably, a water inlet is provided at the bottom of the water pump, a flow channel is provided on the side of the water pump and spirally extends toward the central part of the triangular structure, the end of the flow channel forms a water outlet, and the lower end of the water guide pipe is connected to the water outlet. The spiral flow channel can pressurize the water flow during the water flow to increase the flow rate and lift.

[0016] In the utility model, the water return area is arranged centrally at the bottom of the box, the water pump is offset relative to the center of the bottom wall of the box, and the water outlet of the water pump is arranged corresponding to the central part of the bottom of the box.

[0017] Compared with the prior art, the advantages of the utility model are: the utility model arranges an open water pump in the return water area, and arranges a water guide pipe passing through the filter plate at the water outlet on the top of the water pump, and at the same time, an assembly set is integrally formed on the filter plate, which also extends to the filter plate and is connected with the water guide pipe. The assembly gap is moved upward and away from the area of ​​​​violent gas-liquid exchange, thereby effectively avoiding the problem of air suction, which is beneficial to improving the water pumping efficiency and the jet head, and thus improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a partial structural schematic diagram of a cleaning machine according to an embodiment of the utility model;

[0019] Figure 2 for Figure 1 Exploded view of (hidden box);

[0020] Figure 3 for Figure 1 Cross-sectional view (hidden box);

[0021] Figure 4 It is an assembly diagram of the water return area, the water pump slag collection basket, and the heating element in the embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of the structure of the lower half of the water pump shell in the 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] like Figures 1 to 5 As shown, the cleaning machine of this embodiment includes a box body 1, a filter plate 2 and a water pump 3. A concave return water area 11 is provided at the bottom of the box body 1, the filter plate 2 covers the top of the return water area 11, the water pump 3 is arranged in the return water area 11, and the water pump 3 is provided with a water pipe 31 extending upward. An opening 21 is opened on the filter plate 2 for the water pipe 31 to pass through. The edge of the opening 21 extends upward to form an assembly sleeve 22 surrounding the outer periphery of the water pipe 31, and the upper end of the assembly sleeve 22 is connected to the outer peripheral wall of the water pipe 31.

[0025] The height h of the assembly sleeve 22 is 7-20 mm, preferably 9-13 mm; in this embodiment, the height of the assembly sleeve 22 is set to 11.5 mm. The height of the assembly sleeve 22 is the height of the assembly gap between the water conduit 31 of the water pump 3 and the filter plate 2 relative to the filter plate 2. The above structure is adopted to avoid air suction while ensuring sufficient water flow and water pressure.

[0026] Specifically, the outer peripheral wall of the water conduit 31 of this embodiment is provided with a first convex ring 311 extending radially outward, and correspondingly, the top edge of the assembly sleeve 22 is provided with a second convex ring 221 extending radially inward, and the second convex ring 221 is in contact with and matched with the first convex ring 311. The second convex ring 221 and the first convex ring 311 are overlapped and matched up and down. By using the second convex ring 221 to press against the first convex ring 311, a downward force can be applied to the water pump 3 through the filter plate 2, which is conducive to improving the assembly stability of the water pump 3 in the return water area 11.

[0027] The outer peripheral surface of the upper part of the first bead 311 forms a first inclined surface 312 which gradually tilts inwards radially from bottom to top. Correspondingly, the inner peripheral wall of the second bead 221 forms a second inclined surface 222 which can match the first inclined surface 312. The matching mode of the inclined surface can increase the contact surface and further improve the assembly stability and reliability. The lower part of the first bead 311 forms a supporting edge 313 at the lower edge corresponding to the first inclined surface 312, and the bottom of the second bead 222 abuts against the supporting edge 313. This structure can constrain the position of the filter plate 2 to improve the assembly reliability of the two.

[0028] The lower surface of the filter plate 2 of this embodiment is provided with a sleeve 23 arranged around the periphery of the water guide pipe 31, and there is a gap between the lower end of the sleeve 23 and the upper surface of the water pump 3. The sleeve 23 is arranged corresponding to the periphery of the assembly sleeve 22, and the diameter of the sleeve 23 is larger than the diameter of the assembly sleeve 22. The sleeve 23 can improve the overall strength of the central part of the filter plate 2, thereby providing reliable support for the force coordination between the assembly sleeve 22 and the water guide pipe 31.

[0029] In this embodiment, a water pump 3, a slag collection basket 4, and a heating element 5 are installed in the water return area 11. From a top view, the water pump 3, the slag collection basket 4, and the heating element 5 are arranged in a herringbone structure, and the side wall of the water return area 11 surrounds the periphery of the herringbone structure, wherein the water pump 3 is also provided with an offset water outlet 30 and the water outlet 30 extends to the central part of the herringbone structure. Specifically, the water return area 11 is a triangular structure with a smooth transition of corners, and each corner of the triangular structure and the adjacent straight side parts respectively enclose a first installation area 10, a second installation area 20, and a third installation area 30a, wherein the first installation area 10 is used to install the water pump 3, the second installation area 20 is used to install the heating element 5, and the third installation area 30a is used to install the slag collection basket 4. 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. In this embodiment, the return water area 11 is set as a triangular structure, and the water pump 3, the slag collection basket 4, and the heating element 5 are installed in each corner area of ​​the triangular structure respectively, and then the water outlet 30 of the water pump 3 is used to guide the water outlet to the remaining space in the central part of the triangular structure, so as to maximize the use of the space of the return water area 11, which not only greatly reduces the volume of the return water area 11, but also helps to save the amount of washing water each time, and helps to improve the return water speed and water efficiency; because the water pump 3 no longer occupies the central part of the bottom of the cleaning machine, the slag collection basket 4 can be closer to the central part of the bottom of the cleaning machine, which is conducive to improving the slag collection effect.

[0030] The water pump 3 is provided with a water inlet 33 at the bottom, and a flow channel 34 is provided on the side of the water pump 3, which spirally extends toward the central part of the triangular structure. The end of the flow channel 34 forms a water outlet 30. The lower end of the water guide pipe 31 is integrally connected to the water outlet 30, and the upper end of the water guide pipe 31 is connected to the spray arm 6. The spiral flow channel 34 can pressurize the water flow during the water flow to increase the flow rate and lift.

[0031] In this embodiment, the water return area 11 is arranged in the center of the bottom of the box body 1, the water pump 3 is offset relative to the center of the bottom wall of the box body 1, and the water outlet 30 of the water pump 3 is arranged corresponding to the central part of the bottom of the box body 1. This structure is conducive to improving the slag collection effect and water return efficiency.

[0032] In this embodiment, an open water pump is arranged in the return water area 11, and a water pipe 31 penetrating the filter plate 2 is arranged at the water outlet 30 on the top of the water pump 3. At the same time, an assembly sleeve 22 which also extends to the filter plate 2 and is connected with the water pipe 31 is integrally formed on the filter plate 2, so that the assembly gap is moved upward and away from the gas-liquid intense exchange area, thereby effectively avoiding the air suction problem, which is beneficial to improving the water pumping efficiency and the jet head, and thus improving the cleaning effect.

[0033] 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 filter plate (2) and a water pump (3), wherein a concave water return area (11) is provided at the bottom of the housing (1), the filter plate (2) covers the top of the water return area (11), and the water pump (3) is arranged in the water return area (11), characterized in that: The water pump (3) is provided with a water pipe (31) extending upwards, and the filter plate (2) is provided with an opening (21) for the water pipe (31) to pass through, and the edge of the opening (21) extends upwards to form a mounting sleeve (22) surrounding the outer periphery of the water pipe (31), and the upper end of the mounting sleeve (22) is connected to the outer peripheral wall of the water pipe (31).

2. The cleaning machine according to claim 1, characterized in that: The height of the assembly sleeve (22) is 7 to 20 mm.

3. The cleaning machine according to claim 2, characterized in that: The height of the assembly sleeve (22) is 9 to 13 mm.

4. The cleaning machine according to claim 1, characterized in that: The outer peripheral wall of the water conduit (31) is provided with a first convex ring (311) extending radially outward, and correspondingly, the top edge of the assembly sleeve (22) is provided with a second convex ring (221) extending radially inward, and the second convex ring (221) is in contact with and matched with the first convex ring (311).

5. The cleaning machine according to claim 4, characterized in that: The second convex ring (221) and the first convex ring (311) are overlapped and matched with each other up and down.

6. The cleaning machine according to claim 5, characterized in that: The outer peripheral surface of the upper portion of the first protrusion (311) forms a first inclined surface (312) which gradually inclines radially inward from bottom to top, and correspondingly, the inner peripheral wall of the second protrusion (221) forms a second inclined surface (222) which can match the first inclined surface (312).

7. The cleaning machine according to claim 6, characterized in that: A support edge (313) is formed at the lower portion of the first convex ring (311) at the lower edge of the corresponding first inclined surface (312), and the bottom of the second convex ring (221) abuts against the support edge (313).

8. The cleaning machine according to any one of claims 1 to 7, characterized in that: The lower surface of the filter plate (2) is provided with a sleeve (23) arranged around the periphery of the water guide pipe (31), and a distance is provided between the lower end of the sleeve (23) and the upper surface of the water pump (3).

9. The cleaning machine according to claim 8, characterized in that: The sleeve (23) is arranged corresponding to the periphery of the assembly sleeve (22), and the diameter of the sleeve (23) is greater than the diameter of the assembly sleeve (22).

10. The cleaning machine according to any one of claims 1 to 7, characterized in that: A water pump (3), a slag collecting basket (4) and a heating element (5) are installed in the water return area (11). 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 wall of the water return area (11) surrounds the periphery of the herringbone structure. The water pump (3) is also provided with an offset water outlet (30) and the water outlet (30) extends to the central portion of the herringbone structure.

11. The cleaning machine according to claim 10, characterized in that: The water return area (11) is a triangular structure with a smoothly rounded corner, and each corner of the triangular structure and its adjacent straight side portion respectively enclose a first installation area (10), a second installation area (20), and a third installation area (30a); the first installation area (10) is used to install a water pump (3), the second installation area (20) is used to install a heating element (5), and the third installation area (30a) is used to install a slag collection basket (4).

12. The cleaning machine according to claim 11, characterized in that: The bottom of the water pump (3) is provided with a water inlet (33), and the side of the water pump (3) is provided with a flow channel (34) spirally extending toward the central part of the triangular structure, the end of the flow channel (34) forms a water outlet (30), and the lower end of the water guide pipe (31) is connected to the water outlet (30).

13. The cleaning machine according to claim 10, characterized in that: The water return area (11) is arranged in the center of the bottom of the box body (1), the water pump (3) is offset relative to the center of the bottom wall of the box body (1), and the water outlet of the water pump (3) is arranged corresponding to the central part of the bottom of the box body (1).

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