Cleaning machine

Abstract

The utility model relates to a cleaning machine which comprises a box body, a water pump, a first spraying arm and a drainage assembly, the water pump is arranged at the bottom of a washing cavity formed by the box body and provided with a water inlet communicated with the washing cavity and a water outlet used for drawing out water, and the first spraying arm is arranged close to the bottom of the washing cavity and communicated with the water outlet. A water outlet is formed in the bottom wall of the box body, the water drainage assembly is connected below the water outlet and provided with a first outlet and a second outlet, a second spraying arm communicated with the first outlet is arranged on the upper middle portion of the washing cavity, and the second outlet is used for discharging waste water. The drainage assembly comprises a drainage pump used for providing power for drainage and water supply of the second spraying arm and a drainage valve used for closing or opening the second outlet. Independent switching of two paths of water supply is achieved through the drain valve pump structure, the water pump only needs to start one water outlet, the design difficulty of the water pump is reduced, a user can select a washing mode according to cleaning requirements, and water consumption is greatly reduced.

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] Among existing household kitchen dishwashers, small-capacity dishwashers are mainly sink-type dishwashers, and large-capacity dishwashers are mostly front-loading dishwashers. Among them, sink dishwashers are mostly equipped with spray arms only at the bottom of the washing chamber, and front-loading dishwashers are mostly equipped with spray arms at the bottom and upper middle part of the washing chamber. In order to improve the cleaning effect on the back of tableware, sink dishwashers can also be equipped with upper spray arms.

[0003] At present, most dishwashers with dual-way water supply have two independent water outlets on the water pump to achieve dual-way water supply. For example, the Chinese utility model patent "A Cleaning Machine" (application number: CN202222653781.7) with authorization announcement number CN218684253U discloses an open water pump structure with dual water outlets. Opening two water outlets on the water pump requires greater difficulty in designing the water pump, and it is necessary to set an opening in the return water area of ​​the dishwasher to connect the pipe that guides water upward, resulting in a more complicated pipe connection structure at the bottom of the dishwasher; in addition, the two-way spray arms can only achieve synchronous water supply and cannot select single-way water supply as needed, which greatly increases water consumption. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a cleaning machine which can realize independent switching of two water supply routes through a drainage structure, thereby reducing the design difficulty of a water pump and reducing water consumption, 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 casing, a water pump, a first spray arm and a drainage assembly, wherein the water pump is arranged at the bottom of a washing chamber formed by the casing and is provided with a water inlet connected to the washing chamber and a water outlet for pumping out water, the first spray arm is arranged close to the bottom of the washing chamber and is connected to the water outlet, a drainage outlet is provided on the bottom wall of the casing, the drainage assembly is connected below the drainage outlet, the drainage assembly has a first outlet and a second outlet, a second spray arm connected to the first outlet is provided in the middle and upper part of the washing chamber, the second outlet is used for discharging waste water, the drainage assembly comprises a drainage pump for providing power for drainage and water supply to the second spray arm, and a drainage valve for closing or opening the second outlet.

[0007] Preferably, the drain pump comprises a drain pump housing connected to the drain port, the drain pump housing is provided with an impeller for sucking and discharging water from the washing chamber, and the outlet of the drain pump housing is connected to the drain valve and the second spray arm through a three-way pipe. With such a structure, it is convenient to use the drain valve to open and close the second outlet in the shortest path, and then cooperate with the operation of the drain pump to realize the spraying of the second spray arm, so as to meet more cleaning needs.

[0008] Preferably, the first port of the three-way pipe is connected to the outlet of the drain pump housing, the second port of the three-way pipe is connected to the drain valve, the second outlet is arranged on the drain valve, and the third port of the three-way pipe is connected to the second spray arm.

[0009] Preferably, the three-way pipe is an inverted T-shaped structure, the third port is located at the top of the three-way pipe, and the second outlet is opened at the bottom of the drain valve. The port connected to the second spray arm is arranged at the top, and the opening for draining waste water is arranged at the bottom, so as to facilitate the switching between upper layer spraying and waste discharge in coordination with the operation of the drain pump.

[0010] Preferably, the third port of the three-way pipe is connected to the second spray arm through a water conduit, and a filter capable of filtering water is provided at the third port of the three-way pipe. With such a structure, water entering the second spray arm can be filtered to prevent water carrying residues from blocking the spraying of the second spray arm or causing secondary pollution, and the filtered residues remain in the three-way pipe and can be discharged during the drainage process.

[0011] Preferably, the drain valve includes a valve plate that can reciprocate in the second port of the three-way pipe, the valve plate moves to the upstream of the second outlet to isolate the second outlet from the drain pump, and the valve plate moves to the downstream of the second outlet to connect the second outlet with the drain pump. This structure can realize the opening and closing of the second outlet in the shortest path.

[0012] In the utility model, a concave return water area is provided at the bottom of the box body, the water pump is arranged in the return water area, and a slag collecting basket and a heating element are also provided in the return water area. From a top view, the water pump, the slag collecting basket and the heating element are arranged in a herringbone structure, the side walls of the return water area are surrounded by the periphery of the herringbone structure, and the water outlet of the water pump is offset relative to the center of the water pump and extends to the central part of the herringbone structure.

[0013] Preferably, the water return area is a triangular structure with a smooth transition at the corner, including a first straight side, a second straight side, and a third straight side connected end to end, and each straight side is smoothly connected by an arc segment at the intersection.

[0014] The return water area has three corners corresponding to the triangular structure, and each corner and the adjacent straight side part respectively enclose a first installation area, a second installation area, and a third installation area. 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 basket.

[0015] Preferably, the water pump comprises a pump housing and a centrifugal impeller, the pump housing is arranged in the first installation area and has a water inlet at the bottom, the pump housing is provided with the water outlet at the side, the centrifugal impeller is rotatably arranged in the pump housing and is used to provide water pumping power. A driving member for driving the centrifugal impeller to rotate is arranged below the return water area, and the power output shaft of the driving member extends from bottom to top into the return water area and further passes through the water inlet to be connected with the centrifugal impeller.

[0016] The return water area of ​​existing open water pumps is mostly semicircular in shape. Considering that the spray arm needs to be arranged in the center relative to the box body to better cover the dishwashing range, the return water area needs to be offset on the bottom wall of the box body, and the slag collection 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 slag collection basket, and is further drawn into the spray arm through the water suction port of the open water pump located in the return water area. However, since the slag collection 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 slag collection basket, resulting in poor slag collection effect and residue retention problems on the filter plate. In addition, the structure of the above-mentioned return water area determines that the heating element located beside the water pump is also offset on the bottom wall of the box body. 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.

[0017] Compared with the prior art, the advantages of the utility model are: the utility model opens a first opening on the drain valve which can transport washing water to the second spray arm when the drain pump is absorbing water. When only bottom spraying is needed, the second opening is closed by the drain valve, and the water pump can be operated independently; when only upper spraying is needed, the second opening is closed by the drain valve, and the drain pump can be operated independently; when bottom spraying and upper spraying are required to be carried out simultaneously, the second opening is closed by the drain valve, and the water pump and the drain pump can be operated at the same time; when draining, the second opening is opened by the drain valve, and the drain pump can be operated independently. The utility model realizes independent switching of two water supplies through the drain valve pump structure. The water pump itself only needs to start one water outlet, which reduces the design difficulty of the water pump. The user can select the washing mode according to the cleaning needs, which greatly reduces water consumption. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0020] Figure 3 for Figure 1 The structural diagram of the first spray arm and the filter plate is hidden in the middle;

[0021] Figure 4 for Figure 3 A cross-sectional view of

[0022] Figure 5 for Figure 4 A partial enlarged view of

[0023] Figure 6 It is a schematic diagram of the structure of the water pump in the embodiment of the utility model;

[0024] Figure 7 for Figure 6 Schematic diagram of the bottom structure. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] like Figures 1 to 7 As shown, the cleaning machine of this embodiment includes a housing 1, a water pump 3, a first spray arm 10, a second spray arm 20 and a drainage assembly 2. The housing 1 forms a washing chamber, and a concave water return area 11 is provided at the bottom of the washing chamber of the housing 1. The water pump 3 is an open water pump arranged in the water return area 11, that is, a water inlet 33 connected to the water return area 11 is provided on the bottom wall of the water pump 3, and a water outlet 31 for pumping water in the water return area 11 upwards is provided on the side of the water pump 3.

[0027] The first spray arm 10 is a bottom spray arm, located above the return water area 11 near the bottom of the washing chamber, and connected to the water outlet 31. A drain port 12 is provided on the bottom wall of the box body 1, and the drain assembly 3 is connected below the drain port 12. The drain assembly 2 has a first outlet 21 and a second outlet 22. A second spray arm 20 connected to the first outlet 21 is provided in the middle and upper part of the washing chamber, and the second outlet 22 is used for draining waste water. The drain assembly 2 includes a drain pump 23 for providing power for draining water and supplying water to the second spray arm 20, and a drain valve 24 for closing or opening the second outlet 22.

[0028] The drain pump 23 includes a drain pump housing 231 connected to the drain port 12, and an impeller 232 for sucking and discharging water from the washing chamber is arranged in the drain pump housing 231. The outlet 2311 of the drain pump housing 231 is connected to the drain valve 24 and the second spray arm 20 through the three-way pipe 25. With such a structure, it is convenient to use the drain valve 24 to realize the opening and closing of the second outlet 22 in the shortest path, and then cooperate with the operation of the drain pump 23 to realize the spraying of the second spray arm 20, so as to meet more cleaning needs.

[0029] The first port 251 of the three-way pipe 25 is connected to the outlet 2311 of the drain pump housing 231 , the second port 252 of the three-way pipe 25 is connected to the drain valve 24 , the second outlet 22 is arranged on the drain valve 24 , and the third port 253 of the three-way pipe 25 is connected to the second spray arm 20 .

[0030] The three-way pipe 25 is an inverted T-shaped structure, the third port 253 is located at the top of the three-way pipe 25, the top of the third port 253 constitutes the first water outlet 21, and the second outlet 22 is opened at the bottom of the drain valve 24. The port connected to the second spray arm 20 is set at the top and the opening for draining wastewater is set at the bottom, which is convenient for cooperating with the operation of the drain pump 23 to realize the switching between upper layer spraying and waste discharge.

[0031] The third port 253 of the three-way pipe 25 is connected to the second spray arm 20 through the water guide pipe 26, and a filter 2531 capable of filtering water is provided at the third port 253 of the three-way pipe 25. With such a structure, the water entering the second spray arm 20 can be filtered to prevent the water carrying residues from blocking the spraying of the second spray arm 20 or causing secondary pollution, and the filtered residues remain in the three-way pipe 25 and can be discharged during the drainage process.

[0032] The drain valve 24 includes a valve plate 241 that can reciprocate in the second port 252 of the three-way pipe 25. A motor for pushing the valve plate 241 to move back and forth is arranged outside the second port 252 of the three-way pipe 25. The valve plate 241 moves to the upstream of the second outlet 22 to isolate the second outlet 22 from the drain pump 23. The valve plate 241 moves to the downstream of the second outlet 22 to connect the second outlet 22 with the drain pump 23. This structure can realize the opening and closing of the second outlet 22 in the shortest path.

[0033] In this embodiment, a slag collecting basket 4 and a heating element 5 are further provided in the return water area 11. 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 return water area 11 surrounds the periphery of the herringbone structure, and the water outlet 31 of the water pump 3 is offset relative to the center of the water pump 3 and extends to the central part of the herringbone structure.

[0034] The water return area 11 is a triangular structure with a smooth transition of the corners, including a first straight side, a second straight side, and a third straight side connected end to end, and each straight side is smoothly connected by an arc segment at the intersection. The water return area 11 has three corners corresponding to the triangular structure, and each corner and its adjacent straight side respectively enclose a first installation area 100, a second installation area 200, and a third installation area 300. The first installation area 100 is used to install the water pump 3, the second installation area 200 is used to install the heating element 5, and the third installation area 300 is used to install the slag collection basket 4.

[0035] The water pump 3 of this embodiment includes a pump housing 36 and a centrifugal impeller 37. The pump housing 36 is arranged in the first installation area 100 and has a water inlet 33 at the bottom. The pump housing 36 has a water outlet 31 at the side. The centrifugal impeller 37 is rotatably arranged in the pump housing 36 and is used to provide water pumping power. A driving member 38 for driving the centrifugal impeller 37 to rotate is arranged at the outer bottom of the housing 1. The driving member 38 is a motor. The power output shaft of the driving member 38 extends from bottom to top into the return water area 11 and further passes through the water inlet 33 to be connected with the centrifugal impeller 37.

[0036] The cleaning machine of this embodiment can realize the following multiple cleaning modes:

[0037] (1) When only bottom spraying is required, the second opening 22 is closed through the drain valve 24 and the water pump 3 is operated independently;

[0038] (2) When only the upper layer needs to be sprayed, the second opening 22 is closed through the drain valve 24, and the drain pump 23 is operated independently;

[0039] (3) When the bottom spraying and the upper spraying need to be carried out simultaneously, the second opening 22 is closed through the drain valve 24, and the water pump 3 and the drain pump 23 are operated at the same time;

[0040] (4) It is also possible to alternately spray the bottom and the top, by just running the water pump 3 and the drainage pump 23 in (1) and (2) above alternately;

[0041] (5) When draining water, the second opening 22 is opened through the drain valve 24 and the drain pump 23 is operated independently.

[0042] 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 (3), a first spray arm (10) and a drainage assembly (2), wherein the water pump (3) is arranged at the bottom of a washing chamber formed by the housing (1) and is provided with a water inlet (33) connected to the washing chamber and a water outlet (31) for pumping water out, the first spray arm (10) is arranged near the bottom of the washing chamber and is connected to the water outlet (31), the bottom wall of the housing (1) is provided with a drainage outlet (12), the drainage assembly (2) is connected below the drainage outlet (12), and is characterized in that: The drainage assembly (2) has a first outlet (21) and a second outlet (22); a second spray arm (20) connected to the first outlet (21) is provided in the middle and upper part of the washing chamber; the second outlet (22) is used for draining waste water; the drainage assembly (2) comprises a drainage pump (23) for providing power for drainage and water supply to the second spray arm (20) and a drainage valve (24) for closing or opening the second outlet (22).

2. The cleaning machine according to claim 1, characterized in that: The drain pump (23) comprises a drain pump housing (231) connected to the drain port (12), wherein an impeller (232) for sucking and discharging water from the washing chamber is arranged in the drain pump housing (231), and an outlet of the drain pump housing (231) is connected to a drain valve (24) and a second spray arm (20) via a three-way pipe (25).

3. The cleaning machine according to claim 2, characterized in that: The first port (251) of the three-way pipe (25) is connected to the outlet of the drain pump housing (231), the second port (252) of the three-way pipe (25) is connected to the drain valve (24), the second outlet (22) is arranged on the drain valve (24), and the third port (253) of the three-way pipe (25) is connected to the second spray arm (20).

4. The cleaning machine according to claim 3, characterized in that: The three-way pipe (25) is in an inverted T-shaped structure, the third port (253) is located at the top of the three-way pipe (25), and the second outlet (22) is opened at the bottom of the drain valve (24).

5. The cleaning machine according to claim 4, characterized in that: The third port (253) of the three-way pipe (25) is connected to the second spray arm (20) via a water-conducting pipe (26), and a filter screen (2531) capable of filtering water is provided at the third port (253) of the three-way pipe (25).

6. The cleaning machine according to claim 4, characterized in that: The drain valve (24) comprises a valve plate (241) capable of reciprocating in the second port (252) of the three-way pipe (25); the valve plate (241) moves to the upstream of the second outlet (22) to isolate the second outlet (22) from the drain pump (23); and the valve plate (241) moves to the downstream of the second outlet (22) to connect the second outlet (22) with the drain pump (23).

7. The cleaning machine according to any one of claims 1 to 6, characterized in that: The bottom of the housing (1) is provided with a concave water return area (11), the water pump (3) is arranged in the water return area (11), and a slag collecting basket (4) and a heating element (5) are also arranged in the water return area (11). 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, and the water outlet (31) of the water pump (3) is offset relative to the center of the water pump (3) and extends to the central part of the herringbone structure.

8. The cleaning machine according to claim 7, characterized in that: The water return area (11) is a triangular structure with a smooth transition at the corners, comprising a first straight side (201), a second straight side (202), and a third straight side (203) connected end to end, and each straight side is smoothly connected through an arc segment at the intersection.

9. The cleaning machine according to claim 8, characterized in that: The water return area (11) has three corners corresponding to the triangular structure, and each corner and its adjacent straight side portion respectively enclose a first installation area (100), a second installation area (200), and a third installation area (300); the first installation area (100) is used to install a water pump (3), the second installation area (200) is used to install a heating element (5), and the third installation area (300) is used to install a slag collection basket (4).

10. The cleaning machine according to claim 9, characterized in that: The water pump (3) comprises a pump casing (36) and a centrifugal impeller (37); the pump casing (36) is arranged in the first installation area (100) and has a water inlet (33) at the bottom; the water outlet (31) is arranged on the side of the pump casing (36); the centrifugal impeller (37) is rotatably arranged in the pump casing (36) and is used to provide water pumping power.

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