A cleaning machine

Abstract

The present application relates to a kind of cleaning machines, including tank and pump water mechanism, tank bottom is provided with the concave backwater area, the top of backwater area is covered with filter plate, pump water mechanism is used to pump the water of backwater area to filter plate, the bottom of backwater area is partially concave and forms adjacent arrangement and intercommunication sediment collection area, flow guide area, sediment collection basket is accommodated in sediment collection area, top exposes in filter plate, pump water mechanism is installed at flow guide area, flow guide area is provided with heating element surrounded in the pump cavity of pump water mechanism.The present application sets up heating element in flow guide area, does not additionally occupy the volume of backwater area, can reduce backwater area volume, save water and electricity;The present application arranges heating element in the pump cavity of pump water mechanism, here water flow suction is maximum, is favorable to improve capacity utilization, water is heated quickly, improves heating efficiency, since heating element is located in the path of water flow, is favorable to balance water temperature, to improve cleaning effect.

Description

Technical Field

[0001] This invention relates to the field of dishwasher technology, specifically to a washing machine for cleaning tableware. Background Technology

[0002] As people's living standards continue to improve, dishwashers, as a type of kitchen appliance, are increasingly entering households. Currently, dishwashers on the market are generally divided into three types: countertop, cabinet, and sink. Countertop dishwashers are freestanding units that are typically placed on the countertop; cabinet dishwashers are also freestanding units, but they need to be integrated into kitchen cabinets; and sink dishwashers are integrated with the sink and are typically installed in kitchen cabinets.

[0003] Currently, the structure of water tank cleaning machines on the market is mainly the structure mentioned in the applicant's earlier application CN201310750968.1 "Water Tank Cleaning Machine". This structure includes a housing forming the washing space, comprising a water tank body and a cover plate rotatably connected to the water tank body. The bottom of the water tank body has a recessed drainage area at least in the center. A water pump is installed in the drainage area to pump water from the drainage area to the washing space above the drainage area. The drainage area is covered by a drain plate with drainage holes, and a rotating spray arm with water outlet holes, fluidly connected to the water pump, is located above the drain plate. Furthermore, to further improve the cleaning effect, the applicant's earlier applications CN201810334714.4 and CN201810334713.X "Carrier Structure of Water Tank Cleaning Machine" add a heating plate at the bottom of the water tank body to heat the water in the drainage area, and a slag basket with corresponding drain outlets at the bottom of the drainage area to facilitate slag removal.

[0004] In the aforementioned cleaning machine using an open-type water pump, the heating plates are all located at the bottom of the draining area, which requires the volume of the draining chamber, resulting in a larger draining chamber volume and more water and electricity consumption during cleaning. At the same time, the heating plates are partially exposed, resulting in significant energy loss. Furthermore, since they are installed on one side of the draining chamber, the heating efficiency for the overall washing circulating water is low, and the water temperature difference in different areas is large, leading to uneven heating and affecting the cleaning effect. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a cleaning machine that does not require additional drainage chamber volume, thereby reducing the volume of the drainage chamber and saving water and electricity, in light of the current state of the prior art.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0007] A cleaning machine includes a housing and a pumping mechanism. The bottom of the housing is provided with a recessed return water area, and the top of the return water area is covered with a filter plate. The pumping mechanism is used to pump water from the return water area to the filter plate. The bottom of the return water area is partially recessed to form adjacent and interconnected slag collection area and flow guiding area. The slag collection area contains a slag collection basket whose top protrudes from the filter plate. The pumping mechanism is installed in the flow guiding area.

[0008] The pumping mechanism has a pump chamber, the vertical projection of which is located within the flow guiding area, and a heating element is provided in the pump chamber. That is, the flow guiding area constitutes part of the pump chamber, and the heating element is located within the flow guiding area.

[0009] In this invention, the pumping mechanism includes a spray arm and a baffle. The baffle covers the top of the flow guiding area and has a vertically extending flow guiding sleeve. The spray arm is located on top of the flow guiding sleeve, and its bottom wall has a water inlet corresponding to the upper port of the flow guiding sleeve. The baffle, the flow guiding area, the inner cavity of the flow guiding sleeve, and part of the inner cavity of the spray arm together form the pump chamber. The connection between the flow guiding area and the slag collection area constitutes the water inlet of the pump chamber. In the existing dishwasher's water return system, during the process of water flowing through the filter of the drain plate into the drain area, when the water flows past the vicinity of the spray arm and the water pump, it is actually quite far from the slag collection basket, which makes it easy for residue to accumulate there, resulting in poor slag collection efficiency of the slag collection basket. The present invention provides a baffle below the spray arm, which guides the water inlet of the pump mechanism to the slag collection area, where the water suction is greatest. This accelerates the drainage speed at the corresponding slag collection basket, thereby quickly guiding the residue to the slag collection basket and preventing the residue from accumulating on the filter plate at the spray arm, thus improving the slag collection effect of the slag collection basket.

[0010] Preferably, the heating element is disposed on the inner bottom wall of the guide area and arranged corresponding to the lower port of the guide sleeve. By centrally arranging the heating element at the lower port of the guide sleeve, it does not occupy other space in the return water area, reducing the volume of the return water area by 30%, thus reducing water and energy consumption. Simultaneously, during the cleaning process, the water flow gradually rises from the lowest slag collection area to the guide area, and under the action of the pump mechanism (impeller assembly rotation), the water flow velocity along this path exhibits a process from low speed to high speed, which is beneficial for achieving a more effective and efficient heating effect on the circulating water.

[0011] Preferably, the pumping mechanism further includes a drive unit and an impeller assembly. The upper part of the impeller assembly passes through the water inlet and is located in the spray arm. The lower part of the impeller assembly is housed in the guide sleeve. The drive unit is located on the outer bottom wall of the housing, and the power output shaft passes through the bottom wall of the housing and is connected to the impeller assembly.

[0012] Preferably, the heating element is sleeved around the power output shaft, and a locking element is sleeved around the power output shaft. The top of the locking element is provided with a limiting block that presses against the heating element, and the lower end of the locking element passes through the heating element and abuts against the upper end of the driving element. The above structure facilitates the assembly of the heating element.

[0013] As an improvement, the bottom of the housing is provided with a through-hole mounting port corresponding to the arrangement of the heating element. The heating element covers the top of the mounting port, and the upper end of the driving element fills the bottom of the mounting port. The heating element, the inner cavity of the mounting port, and the upper end of the driving element together form a heat insulation cavity. This structure helps to avoid energy loss of the heating element and improves heating efficiency and energy utilization.

[0014] To facilitate installation and improve assembly stability, the lower part of the locking component is threadedly connected to the heating component, and a buffer pad is provided between the limiting block and the heating component and / or between the lower end of the locking component and the upper end of the driving component.

[0015] Preferably, the heating element is a thick film heating plate horizontally arranged on the bottom wall of the flow guiding area.

[0016] Further preferably, the inner bottom wall of the flow guiding region has a receiving groove for installing the thick-film heating element. In the assembled state, the upper wall surface of the thick-film heating element and the inner bottom wall of the flow guiding region together form a relatively flat bottom surface. This structure prevents the accumulation of fine residue at the bottom of the flow guiding region and avoids fluid energy loss.

[0017] Preferably, the bottom wall of the return water area gradually slopes downward from the edge to the center to form a first guiding slope, and the baffle gradually slopes downward from the edge of the return water area to the slag collection area to form a second guiding slope. The first and second guiding slopes are smoothly connected to form a guiding structure for guiding water to the slag collection area. This structure keeps the bottom wall of the return water area generally flat, facilitating better flow guidance and reducing energy loss caused by unevenness and water flow impact. Simultaneously, it concentrates the return water to the slag collection area, ensuring that all water entering the pump chamber enters from the slag collection area and the same side inlet, providing regular guidance of the fluid and improving the return water speed.

[0018] Preferably, the edge of the baffle extends outward at the water inlet of the corresponding pump chamber to form a water guide plate arranged near the side of the slag collection basket. The end of the water guide plate has an arc-shaped notch arranged around the periphery of the slag collection basket. This structure makes the fit between the baffle and the slag collection basket more compact, completely confining the water inlet of the return water area to the vicinity of the slag collection basket, which is beneficial for flushing the side wall of the slag collection basket and avoiding residue adhesion.

[0019] Further preferably, the end of the water guide plate extends downward from the arc-shaped notch to form a rim that partially surrounds the side of the slag collection basket. The height of the lower edge of this rim is lower than the height of the water absorption surface at the top of the slag collection basket. Near the filter plate, the slag collection basket has a guide plate that slopes downward from the edge to the center. The height of the lower edge of this guide plate is the height of the water absorption surface of the slag collection basket. Since the lower edge of the rim is lower than this water absorption surface height, the water absorption surface height of the pumping mechanism is effectively lowered below the water absorption surface of the slag collection and return water in the slag collection basket, which avoids the intake of air bubbles and improves pump performance.

[0020] To improve assembly compactness, the edge of the baffle is provided with a downwardly extending insertion edge that interlocks with the flow guiding area. In the assembled state, the insertion edge is arranged tightly against the inner wall of the flow guiding area. This structure facilitates the formation of a relatively well-sealed open pump chamber, preventing water leakage at the edge of the baffle.

[0021] In this invention, the return water area is offset to one side of the bottom of the tank, the flow guiding area is arranged corresponding to the center of the bottom of the tank, and the slag collection area is arranged corresponding to the edge of the bottom of the tank. The inner bottom wall of the tank gradually slopes downward from the edge towards the return water area to form a third flow guiding slope. This structure helps to further improve the return water effect.

[0022] Preferably, the depth of the guiding region is less than the depth of the slag collection region, and a fourth guiding slope that gradually slopes upward along the direction of water flow is formed at the junction of the slag collection region and the guiding region.

[0023] Preferably, the bottom wall of the box has a drain outlet corresponding to the bottom of the slag collection area, and the box is externally connected to a drain assembly connected to the drain outlet. The drain assembly can be an integrated valve and pump structure to achieve the closure of the drain outlet or powerful drainage.

[0024] Compared with the prior art, the advantages of the present invention are as follows: The present invention sets the heating element in the flow guiding area without occupying the volume of the return water area, which can reduce the volume of the return water area and save water and electricity; at the same time, the present invention arranges the heating element in the pump chamber of the pumping mechanism in the center, where the suction force of the water flow is the greatest, which is conducive to improving energy utilization, rapidly heating the water and improving heating efficiency. Moreover, since the heating element is located on the necessary path of the water flow, it is conducive to balancing the water temperature, thereby improving the cleaning effect. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0026] Figure 2 for Figure 1 A schematic diagram of the bottom structure;

[0027] Figure 3 This is a cross-sectional view of an embodiment of the present invention;

[0028] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0029] Figure 5 for Figure 1 A schematic diagram of the concealed spray arm and filter plate;

[0030] Figure 6 for Figure 5 A structural schematic diagram of the concealed slag collection basket and baffle;

[0031] Figure 7 This is a schematic diagram of the baffle structure in an embodiment of the present invention. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0033] like Figures 1-7 As shown, the cleaning machine of this embodiment includes a housing 1 and a water pumping mechanism 4. A recessed water return area 11 is provided at the bottom of the housing 1, and a filter plate 12 is covered on the top of the water return area 11. The water pumping mechanism 4 is used to pump the water from the water return area 11 onto the filter plate 12.

[0034] The bottom of the aforementioned return water area 11 is partially recessed to form adjacent and interconnected slag collection area 14 and flow guiding area 13. The slag collection area 14 houses a slag collection basket 2 whose top protrudes from the filter plate 12. The pumping mechanism 4 is installed in the flow guiding area 13. The pumping mechanism 4 has a pump chamber 40, the vertical projection of which is located within the flow guiding area 13, and a heating element 5 is disposed within the pump chamber 40. The flow guiding area 13 forms part of the pump chamber 40, and the heating element 5 is disposed within the flow guiding area 13; that is, the flow guiding area 13 contains a heating element 5 surrounded by the pump chamber 40 of the pumping mechanism 4.

[0035] In this embodiment, as Figure 3 , 4As shown, the water pumping mechanism 4 includes a spray arm 41 and a baffle 45. The baffle 45 covers the top of the flow guiding area 13 and is provided with a flow guiding sleeve 451 that runs vertically through the flow guiding area. The spray arm 41 is located on the top of the flow guiding sleeve 451 and has an inlet 411 on its bottom wall corresponding to the upper port of the flow guiding sleeve 451. The top wall of the spray arm 41 has spray holes. The baffle 45, the flow guiding area 13, the inner cavity of the flow guiding sleeve 451, and part of the inner cavity of the spray arm 41 together form a pump chamber 40. The connection between the flow guiding area 13 and the slag collection area 14 constitutes the water inlet 401 of the pump chamber 40. In the existing dishwasher's water return system, during the process of water flowing through the filter of the drain plate into the drain area, when the water flows past the spray arm 41 and the vicinity of the water pump, it is actually far from the slag collection basket 2, which makes it easy for residue to accumulate here and the slag collection effect of the slag collection basket is poor. In this embodiment, a baffle 45 is provided below the spray arm 41. The baffle 45 guides the water inlet 401 of the pump mechanism 4 to the slag collection area 14, where the water suction is the greatest. This speeds up the return water speed at the corresponding slag collection basket 2, thereby quickly guiding the residue to the slag collection basket 2 and preventing the residue from accumulating on the filter plate 12 at the spray arm 41, thus improving the slag collection effect of the slag collection basket 2.

[0036] In this embodiment, the heating element 5 is disposed on the inner bottom wall of the flow guiding area 13 and is arranged corresponding to the lower port of the flow guiding sleeve 451. By centrally arranging the heating element 5 at the lower port of the flow guiding sleeve 451, other space in the return water area 11 is not occupied, which can reduce the volume of the return water area 11 by 30%, thereby reducing water and energy consumption. At the same time, during the cleaning process, the water flow gradually rises from the lowest position of the slag collection area 14 to the flow guiding area 13. Furthermore, under the action of the pump mechanism (rotation of the impeller assembly), the water flow velocity along this path presents a process from low speed to high speed, which is conducive to a more effective and efficient heating effect on the circulating water.

[0037] The pumping mechanism 4 in this embodiment also includes a drive unit 43 and an impeller assembly 42. The upper part of the impeller assembly 42 passes through the water inlet 411 and is located in the spray arm 41. The lower part of the impeller assembly 42 is housed in the guide sleeve 451. The upper part of the impeller assembly 42 is a centrifugal impeller, used to disperse water circumferentially in the flow channel of the spray arm. The lower part of the impeller assembly 42 is an axial flow impeller, used to draw water from the guide area 13 upward into the spray arm 41. The drive unit 43 is a motor, which is located on the outer bottom wall of the housing 1 and the power output shaft 431 passes through the bottom wall of the housing 1 and is connected to the impeller assembly 42.

[0038] The heating element 5 is sleeved around the power output shaft 431. A locking element 432 is sleeved around the power output shaft 431. A limiting block 4321 that presses against the heating element 5 is provided on the top of the locking element 432. The lower end of the locking element 432 passes through the heating element 5 and abuts against the upper end of the driving element 43. The above structure facilitates the assembly of the heating element 5.

[0039] The bottom of the housing 1 has a through-hole 15 corresponding to the arrangement of the heating element 5. The heating element 5 covers the top of the mounting hole 15, and the upper end of the driving element 43 fills the bottom of the mounting hole 15. The heating element 5, the inner cavity of the mounting hole 15, and the upper end of the driving element 43 together form a heat insulation cavity 150. This structure helps to avoid energy loss of the heating element 5 and improves heating efficiency and energy utilization. To facilitate installation and improve assembly stability, the lower part of the locking element 432 is threaded to the heating element 5, and buffer pads are provided between the limiting block 4321 and the heating element 5, and between the lower end of the locking element 432 and the upper end of the driving element 43.

[0040] In this embodiment, the heating element 5 is a thick-film heating plate horizontally arranged on the inner bottom wall of the flow guiding region 13. The thick-film heating plate can be connected to the power supply at the motor via its edge or bottom. A receiving groove 130 for mounting the thick-film heating plate is formed on the inner bottom wall of the flow guiding region 13. When assembled, the upper wall surface of the thick-film heating plate and the inner bottom wall of the flow guiding region 13 together form a relatively flat bottom surface. This structure prevents the accumulation of fine residue at the bottom of the flow guiding region 13 and avoids fluid energy loss.

[0041] In this embodiment, the bottom wall of the return water area 11 gradually slopes downward from the edge to the center to form a first guiding slope 111. The baffle 45 gradually slopes downward from the edge of the return water area 11 to the slag collection area 14 to form a second guiding slope 452. The first guiding slope 111 and the second guiding slope 452 are smoothly connected to form a guiding structure for guiding water to the slag collection area 14. The above structure keeps the bottom wall of the return water area 11 flat, which facilitates better flow guidance and reduces energy loss caused by unevenness and water flow impact. At the same time, it concentrates and guides the return water to the slag collection area 14, so that all the water entering the pump chamber 40 enters the pump chamber 40 from the slag collection area 14 and the same side water inlet, which guides the fluid in a regular manner and helps to improve the return water speed.

[0042] like Figure 6 , 7As shown, the edge of the baffle 45 extends outward from the water inlet 401 of the corresponding pump chamber 40 to form a water guide plate 453 arranged near the side of the slag collection basket 2. The end of the water guide plate 453 has an arc-shaped notch 4531 arranged around the periphery of the slag collection basket 2. This structure makes the fit between the baffle 45 and the slag collection basket 2 more compact, completely confining the water inlet 401 of the return water area 11 to the vicinity of the slag collection basket 2, which is conducive to flushing the side wall of the slag collection basket 2 and avoids residue adhesion. The end of the water guide plate 453 extends downward from the arc-shaped notch 4531 to form a perimeter 4532 that can partially surround the side of the slag collection basket 2. The height of the lower edge of the perimeter 4532 is lower than the height of the top water suction surface of the slag collection basket 2. The slag collection basket 2 has a guide plate 21 that slopes downward from the edge to the center near the filter plate 12. The height of the lower edge of the guide plate 21 is the height of the water suction surface of the slag collection basket 2. The height of the lower edge of the circumference 4532 is lower than the height of the water suction surface. In fact, the height of the water suction surface of the pump mechanism 4 is lowered to below the water suction surface of the slag collection basket 2 for slag collection and water return, which can avoid the intake of air bubbles and improve the performance of the pump.

[0043] To improve assembly compactness, the edge of the baffle 45 is provided with a downwardly extending insertion edge 454, which is inserted into the flow guiding area 13. In the assembled state, the insertion edge 454 is arranged close to the inner wall of the flow guiding area 13. The above structure is conducive to forming an open pump chamber 40 with relatively good sealing, avoiding water leakage at the edge of the baffle 43.

[0044] In this embodiment, the return water area 11 is offset to one side of the bottom of the tank 1, the flow guiding area 13 is arranged at the center of the bottom of the tank 1, and the slag collection area 14 is arranged at the edge of the bottom of the tank 1. The inner bottom wall of the tank 1 gradually slopes downward from the edge towards the return water area 11 to form a third flow guiding slope 16. This structure helps to further improve the return water effect. The depth of the flow guiding area 13 is less than the depth of the slag collection area 14, and a fourth flow guiding slope 17 that gradually slopes upward along the water flow direction is formed at the junction of the slag collection area 14 and the flow guiding area 13.

[0045] In this embodiment, the bottom wall of the box 1 has a drain outlet 141 corresponding to the bottom of the slag collection area 14. The box 1 is connected to a drain assembly 6 connected to the drain outlet 141. The drain assembly 6 can be a valve-pump integrated structure to achieve the closure of the drain outlet or powerful drainage.

[0046] In this embodiment, the heating element 5 is placed in the flow guiding area 13 without occupying the volume of the return water area 11, which can reduce the volume of the return water area 11 and save water and electricity. At the same time, in this embodiment, the heating element 5 is centrally arranged in the pump chamber 40 of the pumping mechanism 4, where the suction force of the water flow is the greatest, which is conducive to improving the capacity utilization rate, rapidly heating the water and improving the heating efficiency. Moreover, since the heating element 5 is located on the necessary path of the water flow, it is conducive to balancing the water temperature, thereby improving the cleaning effect. In this embodiment, the water inlet 401 of the pumping mechanism 4 is adjacent to the slag collection area 14, which shortens the return water stroke to the maximum extent and is conducive to improving the return water efficiency.

[0047] The specification and claims of this invention use terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," to describe various exemplary structural parts and elements of the invention. However, these terms are used herein merely for ease of explanation and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" 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 pumping mechanism (4), wherein the bottom of the housing (1) is provided with a recessed return water area (11), the top of the return water area (11) is covered with a filter plate (12), and the water pumping mechanism (4) is used to pump water from the return water area (11) onto the filter plate (12), characterized in that: The bottom of the return water area (11) is partially recessed to form adjacent and interconnected slag collection area (14) and flow guiding area (13). The slag collection area (14) contains a slag collection basket (2) with its top exposed above the filter plate (12). The pumping mechanism (4) is installed in the flow guiding area (13). The pumping mechanism (4) has a pump chamber (40), the vertical projection of which is located within the flow guiding area (13), and a heating element (5) is provided in the pump chamber (40); the pumping mechanism (4) includes a spray arm (41) and a baffle (45), the baffle (45) covers the top of the flow guiding area (13) and is provided with a flow guiding sleeve (451) that runs vertically through it, the spray arm (41) is located at the top of the flow guiding sleeve (451) and has an inlet (411) on its bottom wall that corresponds to the upper port of the flow guiding sleeve (451), the baffle (45) together with the flow guiding area (13), the inner cavity of the flow guiding sleeve (451) and part of the inner cavity of the spray arm (41) to form the pump chamber (40), and the connection between the flow guiding area (13) and the slag collection area (14) constitutes the water inlet (401) of the pump chamber (40).

2. The cleaning machine according to claim 1, characterized in that: A heating element (5) is provided on the inner bottom wall of the flow guiding area (13), and the heating element (5) is arranged at the lower port of the flow guiding sleeve (451).

3. The cleaning machine according to claim 2, characterized in that: The pumping mechanism (4) also includes a drive unit (43) and an impeller assembly (42). The upper part of the impeller assembly (42) passes through the water inlet (411) and is located in the spray arm (41). The lower part of the impeller assembly (42) is housed in the guide sleeve (451). The drive unit (43) is located on the outer bottom wall of the housing (1) and the power output shaft (431) passes through the bottom wall of the housing (1) and is connected to the impeller assembly (42).

4. The cleaning machine according to claim 3, characterized in that: The heating element (5) is sleeved around the power output shaft (431). A locking element (432) is sleeved around the power output shaft (431). A limiting block (4321) is provided on the top of the locking element (432) and presses against the heating element (5). The lower end of the locking element (432) passes through the heating element (5) and abuts against the upper end of the driving element (43).

5. The cleaning machine according to claim 4, characterized in that: The bottom of the housing (1) is provided with an installation port (15) that runs vertically through the housing and corresponds to the arrangement of the heating element (5). The heating element (5) covers the top of the installation port (15), and the upper end of the driving element (43) fills the bottom of the installation port (15). The heating element (5), the inner cavity of the installation port (15), and the upper end of the driving element (43) together form a heat insulation cavity (150).

6. The cleaning machine according to claim 4, characterized in that: The lower part of the locking member (432) is threadedly connected to the heating member (5), and a buffer pad is provided between the limiting block (4321) and the heating member (5) and / or between the lower end of the locking member (432) and the upper end of the driving member (43).

7. The cleaning machine according to claim 2, characterized in that: The heating element (5) is a thick film heating plate that is horizontally arranged on the bottom wall of the flow guiding area (13).

8. The cleaning machine according to claim 7, characterized in that: The inner bottom wall of the flow guiding area (13) has a receiving groove (130) for installing the thick film heating element. When assembled, the upper wall of the thick film heating element and the inner bottom wall of the flow guiding area (13) together form a relatively flat bottom surface.

9. The cleaning machine according to any one of claims 1 to 8, characterized in that: The bottom wall of the return water area (11) gradually slopes downward from the edge to the center to form a first guide slope (111). The baffle (45) gradually slopes downward from the edge of the return water area (11) to the slag collection area (14) to form a second guide slope (452). The first guide slope (111) and the second guide slope (452) are smoothly connected to form a guide structure for guiding water to the slag collection area (14).

10. The cleaning machine according to any one of claims 1 to 8, characterized in that: The edge of the baffle (45) extends outward at the water inlet (401) of the corresponding pump chamber (40) to form a water guide plate (453) arranged near the side of the slag collection basket (2). The end of the water guide plate has an arc-shaped notch (4531) arranged around the periphery of the slag collection basket (2).

11. The cleaning machine according to claim 10, characterized in that: The end of the water guide plate (453) extends downward from the arc-shaped notch (4531) to form a rim (4532) that partially surrounds the side of the slag collection basket (2). The height of the lower edge of the rim (4532) is lower than the height of the top water absorption surface of the slag collection basket (2).

12. The cleaning machine according to any one of claims 1 to 8, characterized in that: The edge of the baffle (45) is provided with a downwardly extending insertion edge (454), which is inserted into the flow guiding area (13). When assembled, the insertion edge (454) is arranged close to the inner wall of the flow guiding area (13).

13. The cleaning machine according to any one of claims 1 to 8, characterized in that: The return water area (11) is offset to one side of the bottom of the tank (1), the flow guiding area (13) is arranged in the center of the bottom of the tank (1), the slag collection area (14) is arranged at the edge of the bottom of the tank (1), and the inner bottom wall of the tank (1) gradually slopes downward from the edge to the return water area (11) to form a third flow guiding slope (16).

14. The cleaning machine according to any one of claims 1 to 8, characterized in that: The depth of the guiding region (13) is less than the depth of the slag collection region (14), and a fourth guiding slope (17) that gradually slopes upward along the direction of water flow is formed at the junction of the slag collection region (14) and the guiding region (13).

15. The cleaning machine according to any one of claims 1 to 8, characterized in that: The bottom wall of the box (1) has a drain outlet (141) arranged at the bottom of the corresponding slag collection area (14), and the outside of the box (1) is connected to a drainage component (6) connected to the drain outlet (141).

Images