A cleaning machine and a cleaning method

Abstract

The present application relates to a kind of cleaning machine and cleaning method, including box, water pump, lower spray arm, upper spray arm and inner water pipe, lower spray arm is located at the top of water pump and is connected with the first water outlet of water pump, the lower end of the inner water pipe is connected with the second water outlet of water pump, the inner water pipe extends upwards and its upper end is connected with the upper spray arm in the upper part of box, the inner water pipe is shaped in the lower part of box corresponding to the integrated water supply flow channel, the inner water pipe is divided into side-by-side arrangement first water supply flow channel, second water supply flow channel at the upper end of water supply flow channel, the first water supply flow channel continues to extend upwards and is water supply for upper spray arm, the upper end of the second water supply flow channel is connected with back spray arm, which can be sprayed from the side of box to the lower part of box, the second water supply flow channel is connected with the first water supply flow channel near its upper end and is provided with adjusting mechanism for controlling the water amount between the first water supply flow channel and the second water supply flow channel at the connecting place.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dishwashers, in particular to a cleaning machine for cleaning tableware and fruits and vegetables. BACKGROUND

[0002] With the increasing improvement of people's living standards, dishwashers as a kind of kitchen household appliances are increasingly entering families.

[0003] The prior application CN202011629756.4 "Water flow system and cleaning machine applying the same" of the present applicant discloses a structure of an open type water pump and water flow system, which comprises a spraying device and a pump for supplying water to the spraying device. The spraying device comprises a bottom spraying arm, a middle spraying arm and a top spraying arm. The pump comprises an upper impeller, a lower impeller, an upper shell and a lower shell. The upper shell has a first accommodating cavity for mounting the upper part of the first blade. The upper part of the lower shell has a second accommodating cavity for mounting the lower part of the first blade. The sidewall of the lower shell is provided with a first water inlet for water to enter the second accommodating cavity. The lower part of the lower shell is provided with a third accommodating cavity for mounting the lower impeller. The sidewall and / or the bottom wall of the lower shell are provided with a second water inlet and a water outlet. The middle spraying arm and the top spraying arm are supplied with water by an inner water pipe extending upward close to the inner wall of the washing cavity. Since the cavity at the lower part of the washing cavity is usually used as the main cleaning cavity, a back spraying arm in communication with the inner water pipe is arranged at the inner wall at the lower part of the washing cavity.

[0004] The power of the two water flows of the above-mentioned cleaning machine structure is independently supplied by the corresponding pumps, which improves the lift and water flow of each water flow and is beneficial to improving the cleaning effect. However, since the inner water pipe divides the upwardly transported water flow into two paths, one path is for supplying water to the middle spraying arm and the top spraying arm, and the other path is for supplying water to the back spraying arm, the flow distribution between the two water supply paths cannot be performed, and due to the influence of the uplink resistance of the middle spraying arm and the top spraying arm, the problem of insufficient spraying force of the middle and top spraying arms and large spraying force of the back spraying arm may occur, which leads to poor washing effect when a large number of tableware needs to be placed in the upper part of the washing cavity.

[0005] Therefore, the current cleaning machine structure needs to be further improved. SUMMARY

[0006] The first technical problem to be solved by the present application is to provide a cleaning machine capable of on-demand distribution of uplink flow to improve the washing effect of each area in view of the current status of the prior art.

[0007] The second technical problem to be solved by the present application is to provide a cleaning method applying the above-mentioned cleaning machine in view of the current status of the prior art.

[0008] The technical solution adopted by the present application to solve the above-mentioned technical problems is that:

[0009] A cleaning machine comprises a tank, a water pump, a lower spraying arm, an upper spraying arm and an inner water pipe, the tank is provided with a lower concave water return area at the bottom, the water pump is arranged in the water return area and communicates with the water return area, the lower spraying arm is arranged on the top of the water pump and communicates with the first water outlet of the water pump, the lower end of the inner water pipe communicates with the second water outlet of the water pump, the inner water pipe extends upward and the upper end thereof is connected with the upper spraying arm arranged in the upper part of the tank, the inner water pipe is formed with an integral water feeding channel corresponding to the lower part of the tank, the inner water pipe is divided into the first water feeding channel and the second water feeding channel arranged side by side at the upper end of the water feeding channel, the first water feeding channel continues to extend upward and supplies water to the upper spraying arm, the upper end of the second water feeding channel is connected with a back spraying arm capable of spraying water from the side of the tank to the lower part of the tank, the second water feeding channel communicates with the first water feeding channel near the upper end thereof and is provided with an adjusting mechanism for controlling the water flow between the first water feeding channel and the second water feeding channel at the communicating position.

[0010] Preferably, the variation tendency of the water area size of the first water feeding channel is opposite to that of the corresponding second water feeding channel. By adopting such water flow distribution mode, the water flow can be distributed according to the requirement more rapidly and effectively.

[0011] Preferably, the upper end of the second water feeding channel is provided with a transversely extending water flow distribution cavity, the top of the water flow distribution cavity is provided with a water outlet communicating with the back spraying arm, the side of the water flow distribution cavity is provided with an opening communicating with the side of the first water feeding channel, and the adjusting mechanism is arranged in the water flow distribution cavity and the water pressure sensing end thereof is located in the first water feeding channel for driving the adjusting mechanism to control the opening size of the second water feeding channel according to the water pressure in the first water feeding channel. By adopting the above structure, the water pressure in the first water feeding channel is sensed by the adjusting mechanism to adjust the opening size of the second water feeding channel, thereby realizing the water flow distribution according to the requirement in the first water feeding channel and the second water feeding channel.

[0012] Preferably, the bottom of the water flow distribution cavity is further provided with a flushing opening beside the adjusting mechanism for locally flushing the washing cavity, and at least part of the adjusting mechanism is movably arranged in the water flow distribution cavity and closes the flushing opening with the increase of the opening size of the second water feeding channel and opens the flushing opening with the decrease of the opening size of the second water feeding channel. By arranging the above flushing opening, the lower part of the washing cavity can be provided with side spraying by the flushing opening when the water supply amount of the back spraying arm is very small or no water is supplied, thereby improving the local cleaning effect and the sediment collection effect.

[0013] Preferably, the adjusting mechanism comprises:

[0014] The baffle is arranged on the support and covers the upper end of the second water channel at least partially.

[0015] The water pressure sensing member is rotatably arranged at the opening and keeps the opening closed, and the water pressure sensing end is arranged at the side of the water pressure sensing member and drives the water pressure sensing member to rotate with the change of water pressure.

[0016] The first elastic member has a first end connected with the water pressure sensing member and a second end connected with the baffle, and is used for controlling the baffle to move transversely and reciprocally and controlling the opening degree of the second water channel with the rotation of the water pressure sensing member.

[0017] With the above structure, when the water pressure in the first water channel is very large, the water pressure sensing end drives the water pressure sensing member to rotate under the action of water pressure, and then drives the baffle to increase the opening degree of the upper end of the second water channel through the first elastic member, at this time, the water flow in the second water channel is increased, and the water flow in the first water channel is naturally reduced correspondingly, so as to realize the self-adaptive adjustment of the water flow of the two water channels.

[0018] Preferably, the adjusting mechanism further comprises a second elastic member, and the upper surface of the baffle is provided with a limiting column extending upward, and the second elastic member is sleeved on the outer periphery of the limiting column and the upper end of the limiting column is matched with the top wall of the transverse part of the T-shaped structure, so that the lower surface of the baffle is always close to the bottom wall of the transverse part of the T-shaped structure. The above structure can make the baffle always stably abut on the support, so that the baffle can always stably control the opening degree of the upper end of the second water channel.

[0019] Preferably, the upper end of the limiting column is provided with a transversely arranged sliding sheet, and the upper surface of the sliding sheet abuts and slides with the top wall of the transverse part of the T-shaped structure. The above structure increases the matching surface of the upper end of the limiting column and the top wall of the flow distribution cavity, so as to improve the matching stability and reliability, and the sliding sheet can also limit the upper end of the second elastic member.

[0020] Preferably, the first elastic member is a torsion spring, which comprises a spring body in the center, a first torsion arm and a second torsion arm connected to both ends of the spring body, the first torsion arm is connected with the water pressure sensing member, and the second torsion arm is connected with the lower part of the limiting rod. The structure is convenient for converting the rotation of the water pressure sensing member into the transverse movement of the baffle, so as to drive the baffle to move transversely by the rotation of the water pressure sensing member.

[0021] Preferably, the water pressure sensing member comprises a cylindrical main body portion and a pressing arm extending radially outward from the side wall of the main body portion, the central part of the main body portion is rotatably connected to the side wall of the flow distribution chamber through a rotating shaft, the outer side wall of the main body portion blocks the opening, and the pressing arm constitutes the pressure sensing end. The above structure can convert the water pressure into the rotating track of the water pressure sensing member to further drive the baffle to move.

[0022] Preferably, the bottom wall of the transverse part of the T-shaped structure is formed with an arc-shaped groove which is concave downward near the opening, the bottom of the main body portion is rotatably arranged in the arc-shaped groove, the connection between the pressure sensing end and the main body portion is located above the arc-shaped groove, and the free end of the pressure sensing end extends obliquely downward from the arc-shaped groove in the first water feeding flow channel. The above structure is beneficial to improve the sealing effect of the water pressure sensing member on the opening and the rotating stability of the water pressure sensing member.

[0023] Preferably, the upper edge of the opening is formed with a clamping leg which is arranged obliquely downward from the first water feeding flow channel, the upper part of the outer periphery of the main body portion is provided with a clamping block which is accommodated in the flow distribution chamber and abuts against the outer side of the clamping leg, and the lower edge of the clamping leg is rotatably connected to the outer peripheral wall of the main body portion. The above structure can reliably constrain the water pressure sensing member in the flow distribution chamber and reliably seal the opening.

[0024] Preferably, the flushing opening is arranged on the supporting table, and the baffle moves outward on the supporting table to cover the flushing opening with the increase of the opening degree of the upper end of the second water feeding flow channel and moves inward on the supporting table to open the flushing opening with the decrease of the opening degree of the upper end of the second water feeding flow channel. The above structure links the opening and closing of the flushing opening with the adjusting mechanism, facilitates the control of the opening and closing of the flushing opening, and changes the opening and closing of the flushing opening corresponding to the water quantity of the back spraying arm to maximize the cleaning effect in various cleaning conditions.

[0025] A cleaning method of a cleaning machine:

[0026] (1) when the number of tableware in the lower part of the washing cavity M is greater than the number of tableware in the upper part of the washing cavity N;

[0027] The adjusting mechanism reduces the water supply flow of the first water feeding flow channel and increases the water supply flow of the second water feeding flow channel, the tableware in the lower part of the washing cavity is subjected to the spraying cleaning from the lower to the upper of the lower spraying arm and the flushing from the back spraying arm with large flow, and the tableware in the upper part of the washing cavity is subjected to the small flow spraying cleaning of the upper spraying arm;

[0028] (2) when the number of tableware in the lower part of the washing cavity M is less than or equal to the number of tableware in the upper part of the washing cavity N;

[0029] The adjusting mechanism reduces or closes the water supply flow of the second water supply channel and increases the water supply flow of the first water supply channel, so that the dishes in the lower part of the washing cavity are cleaned by the upward spraying of the lower spraying arm, and the dishes in the upper part of the washing cavity are cleaned by the high-flow spraying of the upper spraying arm.

[0030] In the present application, as an improvement, a pulsating cleaning mode of the back spraying arm and the flushing port is also provided, the output flow and pressure of the water pump are controlled by adjusting the power of the water pump (controlling the rotating speed of the water pump motor), the flow and pressure in the first water supply channel are fluctuated in a set range (i.e. the flow and pressure are alternately changed), so that the upper port of the second water supply channel is switched between the open and closed states, and the back spraying arm and the flushing port can be pulsed to spray in the process of maintaining the water spraying of the upper spraying arm, so as to improve the overall cleaning effect, which is particularly suitable for the case that a large number of dishes are placed in the upper and lower parts of the washing cavity.

[0031] Compared with the prior art, the present application has the advantages that: the adjusting mechanism is used to sense the water pressure of the first water supply channel to adjust the opening size of the second water supply channel, so as to realize the on-demand distribution of the water flow in the first water supply channel and the second water supply channel, when the water supply of the upper spraying arm needs to be increased, the water supply of the first water supply channel can be adjusted, at this time, the second water supply channel is in the minimum flow state (it can be in the completely cut-off state); when the back spraying arm needs to provide powerful side flushing, the water area of the second water supply channel can be increased, at this time, the back spraying arm is in the partially open or fully open state, so as to control the upper spraying and side spraying flow according to the actual demand, and improve the cleaning effect. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 Part structure schematic diagram of the embodiment of the present application;

[0033] Figure 2 Part structure schematic diagram of the embodiment of the present application; Figure 1 Part structure schematic diagram of the embodiment of the present application;

[0034] Figure 3 Part structure schematic diagram of the embodiment of the present application; Figure 2 Part structure schematic diagram of the embodiment of the present application; DETAILED DESCRIPTION

[0035] The present application will be further described in detail below with reference to the embodiments of the drawings.

[0036] As Figures 1 to 3As shown, the cleaning machine of the present embodiment comprises a box body 1, a water pump 2, a lower spraying arm 3, an upper spraying arm 4 and an inner water pipe 5. The bottom of the box body 1 is provided with a lower concave water return area 11, and the top of the water return area 11 is covered with a filter plate 12. The water pump 2 is arranged in the water return area 11 and communicates with the water return area 11. The bottom of the water pump 2 is provided with a water suction port, the top of the water pump 2 is provided with a first water outlet which is exposed above the filter plate 12, and the side of the water pump 2 is provided with a second water outlet which is located in the water return area 11.

[0037] The lower spraying arm 3 is arranged on the top of the water pump 2 and communicates with the first water outlet of the water pump 2. The lower end of the inner water pipe 5 communicates with the second water outlet of the water pump 2. The inner water pipe 5 extends upwardly and its upper end is connected with the upper spraying arm 4 which is located in the upper part of the box body 1. The inner water pipe 5 is integrally formed with a water delivery flow channel 50 corresponding to the lower part of the box body 1. The inner water pipe 5 is arranged corresponding to the middle part of the lower washing cavity at the upper end of the water delivery flow channel 50. The inner water pipe 5 is divided into a first water delivery flow channel 51 and a second water delivery flow channel 52 which are arranged side by side at the upper end of the water delivery flow channel 50. The first water delivery flow channel 51 continues to extend upwardly and supplies water to the upper spraying arm 4. The upper end of the second water delivery flow channel 52 is connected with a back spraying arm 7 which can spray water from the side of the box body 1 to the lower part of the box body 1. The second water delivery flow channel 52 communicates with the first water delivery flow channel 51 near the upper end thereof and is provided with an adjusting mechanism 6 at the communicating position for controlling the water flow between the first water delivery flow channel 51 and the second water delivery flow channel 52.

[0038] The variation trend of the water flow area of the first water delivery flow channel 51 is opposite to that of the corresponding second water delivery flow channel 52. Such flow distribution mode is beneficial to more rapid and effective on-demand flow distribution.

[0039] The upper end of the second water delivery flow channel 52 is provided with a transversely extending flow distribution cavity 60. The top of the flow distribution cavity 60 is provided with a water outlet 601 which communicates with the back spraying arm 7, and the side of the flow distribution cavity 60 is provided with an opening 602 which communicates with the side of the first water delivery flow channel 51. The adjusting mechanism 6 is arranged in the flow distribution cavity 60 and its water pressure sensing end 621 is located in the first water delivery flow channel 51 for driving the adjusting mechanism 6 to control the opening size of the second water delivery flow channel 52 according to the water pressure in the first water delivery flow channel 51. With the above structure, the water pressure of the first water delivery flow channel 51 is sensed by the adjusting mechanism 6 to adjust the opening size of the second water delivery flow channel 52, thereby realizing on-demand flow distribution in the first water delivery flow channel 51 and the second water delivery flow channel 52.

[0040] The bottom of the flow distribution chamber 60 is also provided with a washing port 603 beside the adjusting mechanism 6 for locally washing the washing chamber. The washing port 603 can be provided with a rotatable or fixed nozzle for straight spraying or cleaning spraying according to the need. At least part of the adjusting mechanism 6 is movably arranged in the flow distribution chamber 60 and closes the washing port 603 as the opening of the second water delivery channel 52 increases and opens the washing port 603 as the opening of the second water delivery channel 52 decreases. The above-mentioned washing port 603 can provide side spraying for the lower part of the washing chamber when the back spraying arm 7 does not supply water in a small amount or in a state of not supplying water, thereby improving the local cleaning effect and improving the slag collection effect.

[0041] The adjusting mechanism 6 comprises:

[0042] The baffle 61 forms a T-shaped structure with the second water delivery channel 52 below the flow distribution chamber 60. The first end of the transverse part of the T-shaped structure is open to form an opening 602. The second end of the T-shaped structure is closed. The bottom wall of the part close to the second end of the T-shaped structure forms a support 605. The baffle 61 is movably arranged on the support 605 and at least partially covers the upper port of the second water delivery channel 52.

[0043] The water pressure sensing member 62 is rotatably arranged at the opening 602 and keeps the opening 602 closed at all times. The water pressure sensing end 621 is arranged at the side of the water pressure sensing member 62 and drives the water pressure sensing member 62 to rotate as the water pressure changes.

[0044] The first elastic member 63 is connected to the water pressure sensing member 62 at the first end and connected to the baffle 61 at the second end. The first elastic member 63 controls the transverse reciprocating movement of the baffle 61 and controls the opening size of the second water delivery channel 52 as the water pressure sensing member 62 rotates.

[0045] When the water pressure in the first water delivery channel 51 is very large, the water pressure sensing end 621 drives the water pressure sensing member 62 to rotate under the action of the water pressure. Then the baffle 61 is driven by the first elastic member 63 to increase the opening of the upper port of the second water delivery channel 52. At this time, the water flow in the second water delivery channel 52 increases and the water flow in the first water delivery channel 51 naturally decreases accordingly, thereby realizing self-adaptive adjustment of the flows of the two channels.

[0046] The adjusting mechanism 6 further comprises a second elastic member 64. The upper surface of the baffle 61 is provided with a limiting column 611 extending upward. The second elastic member 64 (a straight spring) is sleeved on the outer periphery of the limiting column 611 and the upper end cooperates with the top wall of the transverse part of the T-shaped structure so that the lower surface of the baffle 61 is always close to the bottom wall of the transverse part of the T-shaped structure. The above-mentioned structure can make the baffle 61 always stably abut on the support so that it can always stably control the opening of the upper port of the second water delivery channel 52.

[0047] The upper end of the limiting column 611 is provided with a transversely arranged sliding sheet 65, the upper surface of the sliding sheet 65 abuts and slides with the top wall of the transversely arranged portion of the T-shaped structure. The above structure increases the fitting surface of the upper end of the limiting column 611 and the top wall of the flow distribution cavity 60, so as to improve the fitting stability and reliability, and the sliding sheet 65 can also limit the upper end of the second elastic member.

[0048] The first elastic member 63 is a torsion spring, which comprises a spring body 633 in the center and first and second torsion arms 631 and 632 connected to the two ends of the spring body 633. The first torsion arm is connected to the water pressure sensing member 62, and the second torsion arm is connected to the lower part of the limiting rod. The structure facilitates the conversion of the rotation of the water pressure sensing member 62 into the transverse movement of the baffle 61, so as to drive the baffle 61 to move transversely by the rotation of the water pressure sensing member 62.

[0049] The water pressure sensing member 62 comprises a cylindrical main body portion 622 and a push arm extending radially outward from the side wall of the main body portion 622. The central part of the main body portion 622 is rotationally connected to the side wall of the flow distribution cavity 60 through a rotating shaft 623, and the outer side wall of the main body portion 622 blocks the opening 602. The push arm constitutes a pressure sensing end 621. The above structure can convert the water pressure into the rotation track of the water pressure sensing member 62, so as to further drive the baffle 61 to move.

[0050] The bottom wall of the transversely arranged portion of the T-shaped structure is formed with an arc-shaped groove 606 downwardly recessed near the opening 602. The bottom of the main body portion 622 is rotationally arranged in the arc-shaped groove 606. The connection between the pressure sensing end 621 and the main body portion 622 is located above the arc-shaped groove 606, and the free end of the pressure sensing end 621 extends obliquely downward from the arc-shaped groove 606 in the first water delivery channel 51. The above structure is beneficial to improve the sealing effect of the water pressure sensing member 62 on the opening and the rotation stability of the water pressure sensing member 62.

[0051] The upper edge of the opening 602 is formed with a clamping leg 607 obliquely arranged from the first water delivery channel 51 outwardly and downwardly. The upper part of the outer periphery of the main body portion 622 is provided with a clamping block 624, which is accommodated in the flow distribution cavity 60 and abuts the outer side of the clamping leg 607. The lower edge of the clamping leg 607 rotationally fits with the outer peripheral wall of the main body portion 622. The above structure can reliably constrain the water pressure sensing member in the flow distribution cavity 60 and reliably seal the opening.

[0052] The flush opening 603 is arranged on the supporting platform 605, and the baffle 61 moves outward on the supporting platform 605 to cover the flush opening 603 with the increase of the opening degree of the upper end of the second water delivery channel 52, and moves inward on the supporting platform 605 to open the flush opening 603 with the decrease of the opening degree of the upper end of the second water delivery channel 52. With the above structure, the opening and closing of the flush opening 603 is linked with the adjusting mechanism 6, so that the opening and closing of the flush opening 603 is controlled, and the opening and closing of the flush opening 603 is changed correspondingly with the water spraying amount of the back spraying arm 7, so that the cleaning effect in various cleaning conditions is maximized.

[0053] The cleaning method of the cleaning machine in the embodiment:

[0054] (1) When the number of tableware in the lower part of the washing cavity M > the number of tableware in the upper part of the washing cavity N;

[0055] The adjusting mechanism 6 reduces the water supply flow of the first water delivery channel 51 and increases the water supply flow of the second water delivery channel 52, so that the tableware in the lower part of the washing cavity is cleaned by the upward spraying of the lower spraying arm and the large flow of the back spraying arm, and the tableware in the upper part of the washing cavity is cleaned by the small flow of the upper spraying arm.

[0056] (2) When the number of tableware in the lower part of the washing cavity M ≤ the number of tableware in the upper part of the washing cavity N;

[0057] The adjusting mechanism 6 reduces or closes the water supply flow of the second water delivery channel 52 and increases the water supply flow of the first water delivery channel 51, so that the tableware in the lower part of the washing cavity is cleaned by the upward spraying of the lower spraying arm, and the tableware in the upper part of the washing cavity is cleaned by the large flow of the upper spraying arm.

[0058] In the embodiment, as an improvement scheme, a pulse cleaning mode of the back spraying arm 7 and the flush opening 603 can also be provided. The output flow and pressure of the water pump are controlled by adjusting the power of the water pump (controlling the rotating speed of the water pump motor), so that the flow and pressure in the first water delivery channel 51 fluctuate in a set range (i.e. the flow and pressure size change alternately), so that the upper end of the second water delivery channel 52 switches between the open and closed states, and then the back spraying arm 7 and the flush opening 603 can perform pulse spraying in the process of always maintaining water spraying, so as to improve the overall cleaning effect. This cleaning condition is particularly suitable for the case that a large amount of tableware is placed in the upper and lower parts of the washing cavity.

[0059] The embodiment utilizes the adjusting mechanism 6 to sense the water pressure of the first water delivery channel to adjust the opening size of the second water delivery channel, thereby realizing the on-demand distribution of water flow in the first water delivery channel and the second water delivery channel. When the water supply of the upper spray arm needs to be increased, the water supply of the first water delivery channel 51 can be adjusted to increase. At this time, the second water delivery channel 52 is in the minimum flow state (it can be in the completely cut-off state). When the back spray arm 7 needs to provide powerful side flushing, the water area of the second water delivery channel 52 can be increased. At this time, the back spray arm 7 is in the partially open or fully open state, thereby controlling the upper spray and side spray flow according to the actual demand, and improving the cleaning effect.

[0060] In the description and claims of the application, terms are used that refer to relative positions to directionally orient various example structures and elements in the figures. Such terms are used herein for purposes of illustration and description only and are not intended to limit the scope of the application. The terms "front," "back," "upper," "lower," "right," "left," "side," "top," "bottom," "over," "under," "underneath," "above," "on," "below," "up," "down," "vertical," "horizontal," "side," "end," "proximal," "distal," and designations such as "first," "second," and "third," are all used in conjunction with the example orientations shown in the drawings and are used for convenience and illustration only. It should be understood that the application can be practiced in other orientations than those presented in the accompanying drawings.

Claims

1. A cleaning machine comprising a tank (1), a water pump (2), a lower spray arm (3), an upper spray arm (4) and an internal water pipe (5), the tank (1) being provided with a lower concave water return area (11) at the bottom, the water pump (2) being arranged in the water return area (11) and communicating with the water return area (11), the lower spray arm (3) being arranged on the top of the water pump (2) and communicating with the first water outlet of the water pump (2), the lower end of the internal water pipe (5) communicating with the second water outlet of the water pump (2), the internal water pipe (5) extending upwardly and its upper end being connected with the upper spray arm (4) located in the upper part of the tank (1), characterized in that: The inner water pipe (5) corresponds to the water feeding flow channel (50) formed integrally at the lower part of the box (1), the inner water pipe (5) is divided into the first water feeding flow channel (51) and the second water feeding flow channel (52) arranged side by side at the upper end of the water feeding flow channel (50), the first water feeding flow channel (51) continues to extend upward and supplies water to the upper spraying arm (4), the upper end of the second water feeding flow channel (52) is connected with the back spraying arm capable of spraying water from the side of the box to the lower part of the box, the second water feeding flow channel (52) is communicated with the first water feeding flow channel (51) near the upper end thereof and is provided with the adjusting mechanism (6) for controlling the water flow between the first water feeding flow channel (51) and the second water feeding flow channel (52) at the communication position. The upper end of the second water feeding flow channel (52) is provided with the transversely extending flow distribution cavity (60), the top of the flow distribution cavity (60) is provided with the water outlet communicated with the back spraying arm, the side of the flow distribution cavity (60) is provided with the opening communicated with the side of the first water feeding flow channel (51), and the adjusting mechanism (6) is arranged in the flow distribution cavity (60) and the water pressure sensing end thereof is located in the first water feeding flow channel (51) and is used for driving the adjusting mechanism (6) to control the opening size of the second water feeding flow channel (52) according to the water pressure in the first water feeding flow channel (51).

2. The cleaning machine of claim 1, wherein: The change trend of the water flow area size of the first water feeding flow channel (51) is opposite to that of the corresponding second water feeding flow channel (52).

3. The cleaning machine of claim 1, wherein: The bottom of the flow distribution cavity (60) is further provided with the flushing opening beside the adjusting mechanism (6) and used for locally flushing the washing cavity, at least part of the adjusting mechanism (6) is movably arranged in the flow distribution cavity (60) and closes the flushing opening with the increase of the opening size of the second water feeding flow channel (52) and opens the flushing opening with the decrease of the opening size of the second water feeding flow channel (52).

4. The cleaning machine of claim 3, wherein: The adjusting mechanism (6) comprises The flow distribution cavity (60) and the second water feeding flow channel (52) below the flow distribution cavity (60) form a T-shaped structure, the first end of the transverse part of the T-shaped structure is open to form the opening, the second end of the T-shaped structure is closed, the bottom wall of the part close to the second end of the T-shaped structure forms a support table, the baffle (61) is transversely movably arranged on the support table and covers at least part of the upper end of the second water feeding flow channel (52); The water pressure sensing member (62) is rotatably arranged at the opening and keeps the opening closed all the time, the water pressure sensing end is arranged at the side of the water pressure sensing member (62) and drives the water pressure sensing member (62) to rotate with the change of the water pressure; The first elastic member (63) is connected with the water pressure sensing member (62) at the first end and connected with the baffle (61) at the second end and is used for controlling the transverse reciprocating movement of the baffle (61) and the opening size of the second water feeding flow channel (52) with the rotation of the water pressure sensing member (62).

5. The cleaning machine of claim 4, wherein: The adjusting mechanism (6) further comprises a second elastic member (64), an upper surface of the baffle (61) is provided with a limiting post extending upward, the second elastic member (64) is sleeved on the outer periphery of the limiting post and the upper end is matched with the top wall of the horizontal part of the T-shaped structure so that the lower surface of the baffle (61) is always close to the bottom wall of the horizontal part of the T-shaped structure.

6. The cleaning machine of claim 5, wherein: An upper end of the limiting post is provided with a transversely arranged sliding sheet (65), an upper surface of the sliding sheet (65) is abutted and slidably matched with the top wall of the horizontal part of the T-shaped structure.

7. The cleaning machine of claim 5, wherein: The first elastic member (63) is a torsion spring, the torsion spring comprises a spring body in the center and a first torsion arm and a second torsion arm connected to both ends of the spring body, the first torsion arm is connected with the water pressure sensing member (62), and the second torsion arm is connected with the lower part of the limiting post.

8. The cleaning machine of claim 4, wherein: The water pressure sensing member (62) comprises a cylindrical main body part and a pushing arm extending radially outward from the side wall of the main body part, a central part of the main body part is rotationally connected to the side wall of the flow distribution cavity (60) through a rotating shaft, an outer side wall of the main body part blocks the opening, and the pushing arm constitutes a pressure sensing end (621).

9. The cleaning machine of claim 8, wherein: The bottom wall of the horizontal part of the T-shaped structure is formed with an arc-shaped groove concave downward near the opening, the bottom of the main body part is rotationally arranged in the arc-shaped groove, the connecting part of the pressure sensing end (621) and the main body part is located above the arc-shaped groove, and a free end of the pressure sensing end (621) extends obliquely downward from the arc-shaped groove in the first water feeding flow channel (51).

10. The cleaning machine of claim 8, wherein: An upper edge of the opening is formed with a clamping leg obliquely arranged from the first water feeding flow channel (51) outward and downward, an upper part of the outer periphery of the main body part is provided with a clamping block, the clamping block is accommodated in the flow distribution cavity (60) and abutted with the outer side of the clamping leg, and a lower edge of the clamping leg is rotationally matched with the outer peripheral wall of the main body part.

11. The cleaning machine of any one of claims 4-10, wherein: The flushing port is arranged on the supporting table, the baffle (61) moves outward on the supporting table with the increase of the opening degree of the upper end of the second water feeding flow channel (52) to cover the flushing port, and moves inward on the supporting table with the decrease of the opening degree of the upper end of the second water feeding flow channel (52) to open the flushing port.

12. A cleaning method of a cleaning machine, characterized by: The application is applied to the cleaning machine of any one of claims 1-11. (1) When the number of tableware in the lower part of the washing cavity M > the number of tableware in the upper part of the washing cavity N; The adjusting mechanism (6) reduces the water supply flow of the first water feeding flow channel (51) and increases the water supply flow of the second water feeding flow channel (52), the tableware in the lower part of the washing cavity is subjected to the upward spraying and cleaning of the lower spraying arm (3) and the large flow flushing from the back spraying arm (521) at the same time, and the tableware in the upper part of the washing cavity is subjected to the small flow spraying and cleaning of the upper spraying arm (4). (2) When the number of tableware in the lower part of the washing cavity M ≤ the number of tableware in the upper part of the washing cavity N; The adjusting mechanism (6) reduces or closes the water supply flow of the second water feeding flow channel (52) and increases the water supply flow of the first water feeding flow channel (51), the tableware in the lower part of the washing cavity is subjected to the upward spraying and cleaning of the lower spraying arm (3), and the tableware in the upper part of the washing cavity is subjected to the large flow spraying and cleaning of the upper spraying arm (4).

Images