A cleaning machine and cleaning method

Abstract

This invention relates to a cleaning machine and a cleaning method. The cleaning machine includes a housing, a lower spray arm, an upper spray arm, and a water pumping mechanism. The water pumping mechanism includes a volute, guide vanes, a centrifugal impeller, a second drive component, and an adjustment mechanism. This invention features a first and a second water distribution port with different opening degrees on the guide vanes. The adjustment mechanism allows for circumferential adjustment of the positions of the first and second water distribution ports. When consumers place fewer dishes on the upper layer, the second water distribution port aligns with the second water outlet, reducing the water supply to the upper spray arm and correspondingly increasing the water supply to the lower spray arm. Conversely, when consumers place a large number of dishes on the upper layer, the first water distribution port aligns with the second water outlet, increasing the water supply to the upper spray arm and correspondingly sacrificing some of the water supply to the lower spray arm. This allows for better adjustment of the flow rate between the upper and lower layers based on the characteristics of the consumers' dish placement, thereby improving the cleaning effect.

Description

Technical Field

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

[0002] For larger dishwashers, at least two sets of spray arms, arranged vertically, are typically used to achieve better washing results. During operation, the wash pump delivers water to each spray arm for vertical spraying. After rinsing the dishes, the water that falls back down collects in a water cup at the bottom of the dishwasher. The wash pump then delivers the fallen water back to each spray arm, completing one water circulation cycle.

[0003] The applicant's earlier application CN202211216094.7, "Water Flow System for Cleaning Machine and Cleaning Machine," discloses a structure in which a guide vane is installed in the volute of a water pump to divert water. One stream of water is output through a first outlet at the top of the volute, and the other stream is output through a second outlet on the side of the volute. The guide vane itself does not move. Under the diversion effect of the guide vane, the interference problem between the two streams of water is eliminated, the energy loss of the water flow is reduced, and both streams of water can maintain a high head and a large flow rate. Moreover, the operation of the entire water flow system can be completed by only one centrifugal impeller, the overall structure is simple, and the production cost is reduced.

[0004] The above solution can achieve dual water supply to the dishwasher through a simple structure. However, due to different consumer usage habits, the number of dishes placed on the upper and lower racks may be different, which puts forward different requirements for the water flow rate of the upper and lower racks. Currently, the water flow rate of the upper and lower racks in dishwashers cannot be controlled, making it difficult to meet consumer needs. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a cleaning machine and cleaning method that can adjust the flow rate of the upper and lower layers according to the characteristics of the tableware placed by the consumer, thereby improving the cleaning effect.

[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, a lower spray arm, and an upper spray arm, and further includes:

[0008] The volute is located in the box and at the bottom of the box. It has a water inlet at the bottom, a first water outlet at the top, and a second water outlet on the side. The lower spray arm is connected to the first water outlet, and the upper spray arm is connected to the second water outlet.

[0009] A guide vane is disposed in the volute and includes a cover plate that can divide the inner cavity of the volute into an upper cavity and a lower cavity. The first water outlet is connected to the upper cavity, and the second water outlet is connected to the lower cavity. A first water distribution port and a second water distribution port with an opening smaller than the first water distribution port are provided below the cover plate. A guide port connected to the second water distribution port is provided on the edge of the cover plate to supply water flow from the lower cavity into the upper cavity.

[0010] A centrifugal impeller, rotatably disposed in the lower cavity, is used to draw water into the lower cavity through the suction port, draw water from the lower cavity into the upper cavity through the guide port, and then draw water out through the first outlet, or to draw water directly out of the lower cavity through the second outlet; and

[0011] An adjustment mechanism, connected to the guide vane, is used to drive the guide vane to rotate so that the first or second water distribution port corresponds to the second water outlet, thereby controlling the opening size of the second water outlet.

[0012] Preferably, the cover plate is divided into a first part and a second part arranged opposite to each other in the circumferential direction. The lower surface of the cover plate is provided with a plurality of guide vanes located in the first part and the second part respectively. The plurality of guide vanes are arranged at intervals in the circumferential direction of the cover plate and extend spirally from the edge of the cover plate inward against the direction of water flow. A water distribution channel is constrained between two adjacent guide vanes. The cover plate portion corresponding to the top of the guide vane is at least partially missing to form the water outlet connected to the outlet of the water distribution channel. The gap between the first part and the second part constitutes the first water outlet, and the outlet of the water distribution channel constitutes the second water outlet.

[0013] Preferably, the cover plate is disc-shaped, and the projection of the outer end of the guide vane on the horizontal plane is located at the edge of the disc-shaped cover plate. Each guide vane surrounds a cavity around the cover plate to pressurize and divert the water flow below the cover plate.

[0014] Preferably, in the assembled state, the edge of the cover plate is arranged close to the inner peripheral wall of the volute, and the outer end of the guide vane is arranged close to the inner wall of the volute.

[0015] Preferably, in the two adjacent guide vanes, the outer end of the first guide vane and the inner end of the second guide vane are arranged in an alternating manner to enclose the water distribution channel, and the cover plate is missing in the range from the outer end of the first guide vane to the outer end of the second guide vane to form the water inlet.

[0016] Preferably, the upper surface of the cover plate is provided with converging blades that extend spirally from the edge to the center and are used to gather the water flow delivered through the water inlet to the upper part of its central portion.

[0017] Preferably, a guide cone extending gradually upward from the outside to the inside is provided at the central part of the upper surface of the cover plate, and there are multiple converging blades arranged at intervals around the circumference of the cover plate, with the inner end of the converging blades connecting to the outer edge of the guide cone.

[0018] Preferably, the adjustment mechanism includes a push rod and a first driving member. The push rod is movably disposed below the volute and its upper end extends into the volute. The lower surface of the cover plate has an insertion port that can be inserted and limited to the upper end of the push rod. The first driving member is disposed below the housing and connected to the lower end of the push rod.

[0019] Preferably, the inner wall of the volute is provided with grooves that are spaced apart circumferentially and extend vertically, and correspondingly, the side wall of the guide vane is provided with ribs that can be interference-fitted with the grooves but are allowed to relatively detach under external force.

[0020] Preferably, the bottom of the housing is provided with a second driving component for driving the centrifugal impeller to rotate. The power output shaft of the second driving component extends vertically and its upper end passes through the bottom wall of the housing and the water inlet and is connected to the centrifugal impeller.

[0021] Preferably, the power output shaft of the second driving member is vertically continuous, the push rod is arranged through the power output shaft, and the first driving member is a push rod motor connected below the second driving member, with the output end of the push rod motor facing and connected to the lower end of the push rod.

[0022] One cleaning method is:

[0023] (1) Place set M of utensils on the upper layer of the cleaning machine and set N of utensils on the lower layer of the cleaning machine, with N being greater than M. Rotate the guide vane through the adjustment mechanism to make the second water outlet correspond to the second water outlet.

[0024] Water is introduced into the cleaning machine. After the water is introduced, the centrifugal impeller is driven to rotate. A small amount of water is supplied to the upper spray arm through a second water distributor, and a large amount of water is supplied to the lower spray arm through the first water distributor and other second water distributors.

[0025] (2) Place N sets of utensils on the upper layer of the cleaning machine and M sets of utensils on the lower layer of the cleaning machine, with N being greater than or equal to M. Rotate the guide vanes through the adjustment mechanism to make the first water outlet correspond to the second water outlet.

[0026] Water is introduced into the cleaning machine. After the water is introduced, the centrifugal impeller is driven to rotate. The water volume supplied to the upper spray arm is increased through a first water distributor, and the water volume supplied to the lower spray arm is decreased through a second water distributor and other first water distributors.

[0027] Compared with the prior art, the advantages of the present invention are as follows: The present invention is provided with a first water outlet and a second water outlet with different openings on the guide vane, and the position of the first water outlet and the second water outlet in the circumferential direction is adjusted by an adjustment mechanism. When the consumer places fewer tableware on the upper layer, the second water outlet can be aligned with the second water outlet to reduce the water supply of the upper spray arm and increase the water supply of the lower spray arm accordingly. When the consumer places more tableware on the upper layer, the first water outlet can be aligned with the second water outlet to increase the water supply of the upper spray arm and sacrifice some of the water supply of the lower spray arm accordingly. This allows for better adjustment of the flow rate between the upper and lower layers according to the characteristics of the tableware placement by the consumer, thereby improving the cleaning effect. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the cleaning machine in an embodiment of the present invention (with the hidden part of the housing);

[0029] Figure 2 This is a schematic diagram of the pumping mechanism in an embodiment of the present invention (with the second driving component hidden);

[0030] Figure 3 for Figure 2 A schematic diagram of the bottom structure;

[0031] Figure 4 This is a partial cross-sectional view of the cleaning machine in an embodiment of the present invention;

[0032] Figure 5 for Figure 2 A sectional view (section position relative to the upper cavity);

[0033] Figure 6 This is a schematic diagram of the first cleaning state structure according to an embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the second cleaning state structure according to an embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the guide vane structure in an embodiment of the present invention;

[0036] Figure 9 for Figure 8 A schematic diagram of the bottom structure. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0038] like Figures 1-9As shown, the cleaning machine in this embodiment includes a housing 01, a lower spray arm 02, an upper spray arm 03, and a water pumping mechanism. An upper rack is provided at the top of the housing 01, and a lower rack is provided at the bottom. The lower spray arm 02 sprays water jets down onto the lower rack, and the upper spray arm 03 sprays water jets up onto the upper rack. A return water area 011 is provided at the bottom of the housing 01, and a filter plate 012 is provided on top of the return water area 011. A slag collection basket is provided on the filter plate 012, and the lower spray arm 02 is positioned above the filter plate 012. The water pumping mechanism pumps water from the return water area 011 to the upper and lower spray arms.

[0039] The aforementioned pumping mechanism includes a volute 1, guide vanes 2, a centrifugal impeller 3, a second drive component 4, and an adjusting mechanism 5. Wherein:

[0040] The volute 1 is located in the return water area at the bottom of the box 01. The bottom of the volute 1 has a water inlet 13, the top of the volute 1 has a first water outlet 11, and the side of the volute 1 has a second water outlet 12. The lower spray arm 02 is connected to the first water outlet 11, and the upper spray arm 03 is connected to the second water outlet 12 through a pipe.

[0041] The guide vane 2 is disposed in the volute 1 and includes a cover plate 21 that can divide the inner cavity of the volute 1 into an upper cavity 101 and a lower cavity 102. The first water outlet 11 is connected to the upper cavity 101, and the second water outlet 12 is connected to the lower cavity 102. A first water distribution port 201 that runs radially through and a second water distribution port 202 with an opening smaller than the first water distribution port 201 are provided below the cover plate 21. A guide port 23 connected to the second water distribution port 202 is provided on the edge of the cover plate 21 to supply water flow from the lower cavity 102 into the upper cavity 101.

[0042] The centrifugal impeller 3 is rotatably disposed in the lower cavity 102, and is used to draw water into the lower cavity 102 through the suction port 13, draw water in the lower cavity 102 into the upper cavity 101 through the guide port 23 and then draw it out through the first outlet 11, or draw water in the lower cavity 102 directly out through the second outlet 12.

[0043] The second drive unit 4 is located at the bottom of the housing 01 and is used to drive the centrifugal impeller 3 to rotate. The second drive unit 4 is a motor, and the power output shaft 41 of the second drive unit 4 extends vertically and its upper end passes through the bottom wall of the housing 01 and the water inlet 13 and is connected to the centrifugal impeller 3.

[0044] The regulating mechanism 5 is connected to the guide vane 2 and is used to drive the guide vane 2 to rotate so that the first water outlet 201 or the second water outlet 202 corresponds to the second water outlet 12, thereby controlling the opening size of the second water outlet 12, and then balancing the water supply flow of the upper spray arm 03 and the lower spray arm 02 by controlling the water flow of the second water outlet 12.

[0045] Specifically, in this embodiment, the cover plate 21 is divided into a first part 001 and a second part 002 arranged opposite to each other in the circumferential direction. The lower surface of the cover plate 21 is provided with a plurality of guide vanes 22 located in the first part 001 and the second part 002 respectively. The plurality of guide vanes 22 are arranged at intervals in the circumferential direction of the cover plate 21 and extend spirally inward from the edge of the cover plate 21 against the direction of water flow. A water distribution channel 24 is constrained between two adjacent guide vanes 22. The part of the cover plate 21 corresponding to the top of the guide vane 22 is at least partially missing to form a water outlet 23 connected to the outlet of the water distribution channel 24. The gap between the first part 001 and the second part 002 constitutes the first water outlet 201, and the outlet of the water distribution channel 24 constitutes the second water outlet 202.

[0046] The cover plate 21 is disc-shaped, and the projection of the outer end of the guide vane 22 on the horizontal plane is located at the edge of the disc-shaped cover plate 21. In the assembled state, the edge of the cover plate 21 is arranged close to the inner peripheral wall of the volute 1, and the outer end of the guide vane 22 is arranged close to the inner wall of the volute 21. Each guide vane 22 surrounds the cover plate 21 to form a surrounding cavity 100 for pressurizing and circumferentially diverting the water flow below the cover plate 21.

[0047] In the two adjacent guide vanes 22, the outer end of the first guide vane 22 and the inner end of the second guide vane 22 are arranged in an alternating manner to enclose the water distribution channel 24. The cover plate 21 is missing in the range from the outer end of the first guide vane 22 to the outer end of the second guide vane 22 to form a water guide 23.

[0048] The guide vane 22 in this embodiment has the following functions: (1) forming an enclosing cavity, the edge of which divides the output water flow into multiple streams in the circumferential direction, thus playing a diversion role; at the same time, the enclosing cavity pressurizes the water flow entering it in the circumferential direction to increase the output head; (2) the guide vane encloses the water diversion channel 24, so that the diverted part of the water flow can be better connected to its upper cavity 101 through the water inlet 23, reducing energy loss and increasing water pressure and head.

[0049] In this embodiment, the upper surface of the cover plate 21 is provided with converging vanes 25 that spirally extend from the edge to the center, used to gather the water flow delivered through the water inlet 23 towards the upper part of its central portion. A guide cone 26, extending gradually upward from the outside to the inside, is provided at the central portion of the upper surface of the cover plate 21. Multiple converging vanes 25 are arranged at intervals around the circumference of the cover plate 21, and the inner ends of the converging vanes 25 connect with the outer edge of the guide cone 26. This structure can rectify and guide the water flow entering the upper cavity 101, avoiding energy loss caused by turbulent water flow and improving water pressure and head.

[0050] In this embodiment, the adjustment mechanism 5 includes a push rod 51 and a first driving member 52. The push rod 51 is movably disposed below the volute 1 and its upper end extends into the volute 1. The lower surface of the cover plate 21 has an insertion port 211 that can be inserted and limited with the upper end of the push rod 51. The first driving member 52 is disposed below the housing 01 and connected to the lower end of the push rod 51. The inner wall of the volute 1 is provided with grooves that are spaced apart circumferentially and extend vertically. Correspondingly, the side wall of the guide vane 2 is provided with a rib 27 that can be interference-fitted with the groove (interference amount is 0.1mm) but is allowed to relatively disengage under external force.

[0051] The power output shaft 41 of the second driving member 4 extends vertically, and the push rod 51 passes through the power output shaft 41. The first driving member 52 is a push rod motor connected below the second driving member 4, and the output end of the push rod motor faces and is connected to the lower end of the push rod 51. In this embodiment, the hollow cavities of the push rod 51 and the power output shaft 41 are corresponding non-cylindrical structures. In this embodiment, it is a flat structure on one side of the push rod 51. Therefore, the push rod 51 can move up and down relative to the power output shaft 41, but there is a circumferential limit between the two, and the push rod 51 cannot move up and down relative to the power output shaft 41.

[0052] The cleaning method in this embodiment is as follows:

[0053] (1) Place set M of utensils on the upper layer of the cleaning machine and set N of utensils on the lower layer of the cleaning machine, where N is greater than M. The first drive member 52 pushes the push rod 51 upward so that the upper end of the push rod 51 is inserted into the slot 211 of the cover plate 21, thereby achieving circumferential limiting between the push rod 51 and the guide vane 2. The power output shaft 41 of the second drive member 4 is controlled to rotate slowly in the circumferential direction, thereby driving the guide vane 2 to rotate in the circumferential direction, so that the second water outlet 202 corresponds to the second water outlet 12. The first drive member 52 pulls the push rod 51 downward, thereby eliminating the limiting effect between the push rod 51 and the guide vane 2. The edge of the guide vane 2 will not rotate relative to the volute 1 due to the interference fit with the inner wall of the volute 1.

[0054] Water is introduced into the cleaning machine. After the water is introduced, the second drive unit 4 drives the centrifugal impeller 3 to rotate. A small amount of water is supplied to the upper spray arm 03 through a second water outlet 202, and a large amount of water is supplied to the lower spray arm 02 through the first water outlet 201 and other second water outlets 202.

[0055] (2) Place N sets of utensils on the upper layer of the cleaning machine and M sets of utensils on the lower layer of the cleaning machine, with N being greater than M. The first driving member 52 pushes the push rod 51 upward, so that the upper end of the push rod 51 is inserted into the slot 211 of the cover plate 21, thereby achieving circumferential limiting between the push rod 51 and the guide vane 2. The power output shaft 41 of the second driving member 4 is controlled to rotate slowly in the circumferential direction, driving the guide vane 2 to rotate in the circumferential direction, so that the first water outlet 201 corresponds to the second water outlet 12. The first driving member 52 pulls the push rod 51 downward, and the limiting effect between the push rod 51 and the guide vane 2 is eliminated. The edge of the guide vane 2 will not rotate relative to the volute 1 because of the interference fit with the inner wall of the volute 1.

[0056] Water is introduced into the cleaning machine. After the water is introduced, the second drive unit 4 drives the centrifugal impeller 3 to rotate. The water volume supplied to the upper spray arm 03 is increased through a first water distribution port 201, and the water volume supplied to the lower spray arm 02 is reduced through the second water distribution port 202 and other first water distribution ports 201.

[0057] In this embodiment, a first water outlet 201 and a second water outlet 202 with different openings are provided on the guide vane 2. The position of the first water outlet 201 and the second water outlet 202 in the circumferential direction is adjusted by the adjustment mechanism 5. When the consumer places fewer tableware on the upper layer, the second water outlet 202 can be aligned with the second water outlet 12 to reduce the water supply of the upper spray arm 03 and increase the water supply of the lower spray arm 02 accordingly. When the consumer places more tableware on the upper layer, the first water outlet 201 can be aligned with the second water outlet 12 to increase the water supply of the upper spray arm 03 and sacrifice some of the water supply of the lower spray arm 02 accordingly. This allows for better adjustment of the flow rate between the upper and lower layers according to the characteristics of the tableware placed by the consumer, thereby improving the cleaning effect.

[0058] 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 cabinet (01), a lower spray arm (02) and an upper spray arm (03), characterized in that Also include: The volute (1) is arranged in the box (01) and located at the bottom of the box (01), the bottom is provided with a water suction port (13), the top is provided with a first water outlet (11), the side is provided with a second water outlet (12); the lower spray arm (02) is connected with the first water outlet (11), the upper spray arm (03) is connected with the second water outlet (12); The guide vane (2) is arranged in the volute (1) and includes a cover plate (21) which can separate the inner cavity of the volute (1) into an upper cavity (101) and a lower cavity (102), the first water outlet (11) is connected with the upper cavity (101), the second water outlet (12) is connected with the lower cavity (102), the cover plate (21) is provided with a first water distribution port (201) and a second water distribution port (202) which is smaller than the first water distribution port (201) below the cover plate (21) and penetrates radially, the edge of the cover plate (21) is provided with a water guide port (23) which is connected with the second water distribution port (202) and allows water to flow from the lower cavity (102) into the upper cavity (101); the cover plate (21) is circumferentially divided into a first part (001) and a second part (002) arranged oppositely, the lower surface of the cover plate (21) is provided with a plurality of guide vanes (22) located in the first part (001) and the second part (002) respectively, the plurality of guide vanes (22) are arranged in the circumferential direction of the cover plate (21) and extend inwardly from the edge of the cover plate (21) against the direction of water flow, the adjacent two guide vanes (22) constrain a water distribution channel (24) therebetween, the top of the guide vane (22) corresponds to the cover plate (21) part which is at least partially missing to form the water guide port (23) connected with the outlet of the water distribution channel (24), the gap between the first part (001) and the second part (002) constitutes the first water distribution port (201), and the outlet of the water distribution channel (24) constitutes the second water distribution port (202); The centrifugal impeller (3) is rotatably arranged in the lower cavity (102) and used for sucking water into the lower cavity (102) through the water suction port (13), and then pumping the water in the lower cavity (102) into the upper cavity (101) through the water guide port (23) and further pumping out through the first water outlet (11) or directly pumping out through the second water outlet (12); and The adjusting mechanism (5) is connected with the guide vane (2) and used for driving the guide vane (2) to rotate so that the first water distribution port (201) or the second water distribution port (202) corresponds to the second water outlet (12) to control the opening size of the second water outlet (12).

2. The cleaning machine of claim 1, wherein: The cover plate (21) is disc-shaped, the projection of the outer end of the guide vane (22) on the horizontal plane is located at the edge of the disc-shaped cover plate (21), and each guide vane (22) encloses a surrounding cavity (100) in the circumferential direction of the cover plate (21) for pressurizing and circumferential distribution of the water flow below the cover plate (21).

3. The cleaning machine of claim 2, wherein: In the assembled state, the edge of the cover plate (21) is arranged close to the inner peripheral wall of the volute (1), and the outer end of the guide vane (22) is arranged close to the inner wall of the volute (1).

4. The cleaning machine of claim 1, wherein: In the two adjacent guide vanes (22), the outer end portion of the first guide vane (22) is arranged staggered with the inner end arranged portion of the second guide vane (22) to enclose the water distribution channel (24), and the cover plate (21) is missing in the range corresponding to the outer end of the first guide vane (22) to the outer end of the second guide vane (22) to form the water outlet (23).

5. The cleaning machine of claim 1, wherein: The upper surface of the cover plate (21) is provided with a plurality of flow converging vanes (25) extending spirally from the edge to the middle, which are used to converge the water flow from the water outlet (23) to the upper position of the central part.

6. The cleaning machine of claim 5, wherein: The central part of the upper surface of the cover plate (21) is provided with a guide cone (26) gradually extending upward from the outside to the inside, the flow converging vanes (25) are a plurality of and arranged in the circumferential direction of the cover plate (21), and the inner end of the flow converging vane (25) is connected with the outer edge of the guide cone (26).

7. The cleaning machine of any one of claims 1-6, wherein: The adjusting mechanism (5) comprises a push rod (51) and a first driving member (52), the push rod (51) is movably arranged below the volute (1) and the upper end extends into the volute (1), the lower surface of the cover plate (21) is provided with a socket (211) capable of being inserted and limited with the upper end of the push rod (51), and the first driving member (52) is arranged below the box and connected with the lower end of the push rod (51).

8. The cleaning machine of claim 7, wherein: The inner wall of the volute (1) is provided with grooves arranged in the circumferential direction and extending vertically, and correspondingly, the side wall of the guide vane (2) is provided with a convex rib (27) capable of interference fit with the groove but allowing relative separation under external force.

9. The cleaning machine of claim 7, wherein: The bottom of the box (01) is provided with a second driving member (4) for driving the rotation of the centrifugal impeller (3), and the power output shaft (41) of the second driving member (4) extends upward and downward and the upper end penetrates through the bottom wall of the box (01), the water suction port (13) and the centrifugal impeller (3) are connected.

10. The cleaning machine of claim 9, wherein: The power output shaft (41) of the second driving member (4) extends upward and downward, the push rod (51) is arranged through the power output shaft (41), and the first driving member (52) is a push rod motor connected below the second driving member (4), and the output end of the push rod motor faces and is connected with the lower end of the push rod (51).

11. A cleaning method characterized by: The cleaning machine of any one of claims 1-10, (1) M sets of tableware are placed on the upper layer of the cleaning machine, N sets of tableware are placed on the lower layer of the cleaning machine, and N is greater than M, the guide vane (2) is rotated by the adjusting mechanism (5), and the second water distribution port (202) corresponds to the second water outlet (12); Water is fed into the cleaning machine, after the water is fed, the centrifugal impeller (3) is driven to rotate, a small amount of water is supplied to the upper spray arm (03) through a second water distribution port (202), and a large amount of water is supplied to the lower spray arm (02) through the first water distribution port (201) and other second water distribution ports (202); (2) N sets of tableware are placed on the upper layer of the cleaning machine, and M sets of tableware are placed on the lower layer of the cleaning machine, and N is greater than or equal to M, the guide vane (2) is rotated through the adjusting mechanism (5), and the first water distribution port (201) corresponds to the second water outlet (12); Water is fed into the cleaning machine, after the water feeding is completed, the centrifugal impeller (3) is driven to rotate, the water supply to the upper spray arm (03) is increased through a first water distribution port (201), and the water supply to the lower spray arm (02) is reduced through the second water distribution port (202) and other first water distribution ports (201).

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