CN116763222A

CN116763222A - Self-defoaming water flow system, cleaning machine and cleaning method

Info

Publication number: CN116763222A
Application number: CN202310802762.2A
Authority: CN
Inventors: 施郑赞
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-09-30
Filing date: 2023-06-30
Publication date: 2023-09-19
Also published as: CN116746850A; CN221401073U; CN117257194A; CN117257195A; CN116687302A; CN116712013A; CN221401078U; CN221401072U; CN116784758A; CN116712012A; CN220956175U

Abstract

The application relates to a self-defoaming water flow system, a cleaning machine and a cleaning method, comprising a water pumping mechanism which is arranged in a box body of the cleaning machine and is supported at the bottom of the box body, wherein a driving piece for providing power for the water pumping mechanism is arranged outside the box body, the bottom of the water pumping mechanism is provided with a water return opening with the opening degree increased along with the increase of water pressure and the opening degree reduced along with the decrease of water pressure, and when the opening degree of the water return opening is in the maximum state and the driving piece is powered, the opening degree of the water return opening is reduced along with the increase of the air bubble quantity in water flow. According to the application, the opening of the water return port is automatically balanced through the real-time density of water flow, the stability of the water flow state in the water pumping mechanism is maintained under the condition of not changing the power and sacrificing the water flow, the stable water flow state is helpful for reducing or even eliminating bubbles in the water flow, and the water flow system is automatically maintained in a stable state through balancing the water pressure, at the moment, the high injection lift and the high injection water pressure can be maintained even though the injection water flow of the spray arm is reduced, so that a good cleaning effect is achieved.

Description

Self-defoaming water flow system, cleaning machine and cleaning method

Technical Field

The application relates to the technical field of dish washers, in particular to a self-defoaming water flow system, a cleaning machine and a cleaning method.

Background

With the improvement of living standard of people, dish washers are becoming common equipment in kitchens.

The water flow system in the current dish washer is mainly of an open type and a closed type, a water pump main body of the open type water flow system is arranged in the washing cavity and is directly communicated with the washing cavity, and a water pump of the closed type water flow system is arranged outside the washing cavity and is communicated with the washing cavity through a pipeline. The open water flow system is beneficial to reducing the energy loss of the fluid due to shortening the return water stroke, and has great advantages in the aspect of the performance of the water pump.

The prior patent ZL 201310749864.9 of the inventor discloses a cleaning machine adopting an open water flow system, which comprises a box body forming a washing space, wherein the box body comprises a water tank body, the water tank body is at least sunken in the central part, a drain plate with the same shape as that of the sunken part is covered on the sunken part, a plurality of drain holes for draining are formed in the drain plate, a drain area is formed in the space between the sunken part and the drain plate, the drain plate is flush with other parts at the bottom of the water tank body, and a water pump for discharging a water pump of the drain area to the position above the drain plate is arranged in the drain area.

The structure sets up the water pump in the waterlogging caused by excessive rainfall region of basin body, and is effectual to the moisturizing of water pump. However, since the suction area of the water pump is a constant value, a constant flow rate is provided only for washing dishes in the dishwasher. In the cleaning process, substances such as egg pollutants, dish washing powder and the like contained in tableware are very easy to generate foaming. When the whole water flow foams, the liquid density of the water-vapor mixture is reduced, the motor power is reduced, the motor rotating speed is usually increased in order to be constant at high power, the rising motor rotating speed can further aggravate the foaming amount, when the motor rotating speed reaches a set highest value, the liquid density is further reduced along with further foaming, the power is further reduced, the lift of water pumped out is obviously insufficient, the impact force on the surface of tableware is weakened, and the cleaning effect on the tableware is influenced.

Disclosure of Invention

The first technical problem to be solved by the application is to provide a self-defoaming water flow system which can automatically defoam under the condition of not changing power so as to balance water flow lift and impact force and keep high cleaning effect.

The second technical problem to be solved by the application is to provide a cleaning machine with the self-defoaming water flow system aiming at the current state of the art.

The third technical problem to be solved by the application is to provide a cleaning method of the cleaning machine aiming at the current state of the art.

The application solves at least one of the technical problems by adopting the following technical proposal:

the utility model provides a from defoaming rivers system, includes locates in the box of cleaning machine and supports the pump water mechanism in the bottom of the case portion, is connected with the spray arm on this pump water mechanism, be provided with the driving piece that is used for providing power for pump water mechanism outside the box, the bottom of pump water mechanism is opened has the aperture increase along with the water pressure increase, reduces the return water mouth that the aperture reduces along with the water pressure when the aperture of return water mouth is in the biggest state and driving piece power, the aperture of return water mouth further reduces along with bubble volume increase in the rivers.

In the application, when the power of the driving piece just maintains the opening degree of the water return opening to be in the maximum state, the power of the driving piece is kept unchanged, as the air bubble quantity in water flow is increased, the water flow density is reduced along with the increase of the air bubble quantity in the water flow, the pressure in the water pumping mechanism is reduced, the opening degree of the water return opening is gradually reduced, the water quantity pumped into the water pumping mechanism in unit time is reduced, the water quantity sprayed by the spray arm is reduced, the water flow state in the water pumping mechanism is gradually stabilized, the stirring degree of the water flow in the water pumping mechanism is weakened, and the air bubble quantity in the water flow is gradually reduced along with the increase of the air bubble quantity in the water flow. According to the application, the opening of the water return port is automatically balanced through the real-time density of water flow, so that the stability of the water flow state in the water pumping mechanism is maintained under the condition of sacrificing the water flow, the stable water flow state is conducive to reducing or even eliminating bubbles in the water flow, and the water flow system is automatically maintained in a stable state through balancing the water pressure, at the moment, the high injection lift and the high injection water pressure can be maintained even though the injection water flow of the spray arm is reduced, so that a good cleaning effect is achieved.

Preferably, the pump water mechanism comprises a pump shell, the pump shell comprises an upper shell and a lower shell which can be buckled up and down to enclose a pump cavity, a water suction port is formed in the bottom of the lower shell, a supporting edge which extends downwards and is supported on the bottom wall in the box body is arranged at the edge of the bottom of the lower shell, a water return port is formed in the supporting edge, the upper shell can be restrained on the lower shell in a vertically floating mode, and the edge of the upper shell is provided with a surrounding edge which can seal the water return port after sinking along with the gravity of the upper shell and can be opened after floating up under the action of water power. By adopting the structure, the automatic adjustment of the opening of the water return port can be realized according to the water pressure in the water pumping mechanism, and the problem of shaking and clamping stagnation of the spray arm caused by unstable flow velocity of water flow is solved.

Preferably, the lower shell comprises a first horizontal part and a supporting edge extending downwards from the edge of the first horizontal part, the water suction port is arranged at the central part of the first horizontal part, the upper shell comprises a ring-shaped second horizontal part corresponding to the first horizontal part, the surrounding edge extends downwards from the outer edge of the second horizontal part and corresponds to the periphery of the supporting edge, a cylinder extending upwards is arranged at the inner edge of the second horizontal part, the top of the cylinder gradually gathers together along the radial direction towards the middle to form the water outlet, and the cylinder and the upper surface of the first horizontal part jointly enclose the pump cavity. Through the structure, the relative floating between the upper shell and the lower shell is convenient to realize.

In order to facilitate the connection of the spray arm and the water pumping mechanism, the edge of the water outlet extends upwards to form a water outlet sleeve, and the water outlet sleeve is detachably connected with a water inlet at the bottom of the spray arm.

Preferably, the upper surface of the first horizontal part is provided with a spacing post extending upwards, correspondingly, the second horizontal part is provided with a spacing opening for the spacing post to pass through, and the top of the spacing post is provided with a spacing part capable of spacing the upper shell after floating upwards. The spacing distance of the spacing column to the upper shell is basically consistent with the height of the water return port, so that the water return port is ensured to be opened and closed smoothly.

Preferably, the upper surface of the first horizontal part is recessed at the outer edge thereof to form a receiving groove in which a sealing ring capable of sealing in contact with the inner surface of the upper housing after the upper housing is sunk is embedded.

The water pumping mechanism comprises a space guide vane, an impeller and a pump shell, wherein the space guide vane comprises a cover plate and guide vanes, the cover plate is transversely arranged in the middle of the pump shell and divides an inner cavity of the pump shell into an upper cavity and a lower cavity which are relatively independent, the water outlet is communicated with the upper cavity, the guide vanes are vertically arranged on the lower surface of the cover plate, the plurality of guide vanes cover the circumferential area of the cover plate and are circumferentially arranged at intervals, the guide vanes spirally extend inwards from the edge of the cover plate against the water flow direction, a guide flow channel is restrained between two adjacent guide vanes, and a notch for communicating the guide flow channel with the upper cavity is formed by at least partially deleting the cover plate part corresponding to the top of the guide vane; the impeller can be rotatably arranged in the lower cavity, an inlet corresponding to the water suction port is formed in the bottom of the impeller, and an outlet corresponding to the notch is formed in the side of the impeller. According to the application, the space guide vane and the impeller for axially outputting the axial water inlet after circumferential guiding and pressurizing are arranged in the pump shell so as to meet the water pressure requirement, and on the basis, the spray arm is arranged on the pump shell without being matched with the impeller, so that the water flow stability entering the spray arm is improved, and the rotation stability of the spray arm is further improved, and meanwhile, the impeller is not correspondingly matched with the water inlet of the spray arm, so that the water pressure at the water inlet of the spray arm is stable, and the problems of gas suction and water drainage are avoided.

Preferably, a puncture piece for defoaming is arranged at the water return port. The structure can be matched with the self-adjustment of the opening degree of the water return port to improve the defoaming effect.

Preferably, the piercing member is movably arranged in the supporting edge, is hidden in the supporting edge above the water return opening in an upward movement manner, is extended into the water return opening in a downward movement manner, and is provided with a driving body which can float up and down along with the upper shell to drive the piercing member to move up and down. The driving body is a first magnetic part, the piercing part is a second magnetic part, the first magnetic part is embedded in the surrounding edge, a containing cavity extending upwards from the top edge of the water return port is arranged in the supporting edge, and the second magnetic part is restrained in the containing cavity in a vertically moving mode. By adopting the structure, the puncturing piece can be led to exit the water return port without influencing the water return efficiency under the non-defoaming requirement, and enter the water return port to be used for puncturing bubbles under the defoaming requirement.

The utility model provides a cleaning machine, includes box, spray arm, the bottom half is provided with the return water region of indent, the spray arm can locate on this return water region rotationally, still includes above-mentioned from defoaming rivers system, pumping mechanism locate in the return water region, the driving piece locate the outer bottom of box and power take off shaft pass the box diapire and be connected with pumping mechanism.

A cleaning method comprises the following steps:

when the tableware contains the easily-foaming pollutant, water is fed into the box body, and the rotating speed of the driving piece is set to be constant A rotation/time, the power of the driving piece just maintains the opening of the water return port to be in the maximum state;

the power of the driving piece is kept unchanged, the water flow density is reduced along with the increase of the air bubble quantity in the water flow, the pressure in the water pumping mechanism is reduced, the opening of the water return port is gradually reduced, the water quantity pumped into the water pumping mechanism in unit time is reduced, and the water quantity sprayed by the spray arm is reduced;

the flow state of water flow in the water pumping mechanism gradually tends to be stable, the stirring degree of the water flow in the water pumping mechanism is weakened, the air bubble quantity in the water flow is gradually reduced, and the spray arm maintains high spray lift of a water column under the state that the spray water flow is reduced.

When the tableware does not contain the easily-foaming pollutant and the quantity of the tableware is larger than that of the C sleeve, water is fed into the box body, the rotating speed of the driving piece is set to be constant A-turn/time, the power of the driving piece just maintains the opening of the water return opening in the maximum state, and the spray arm maintains large jet water flow and jet lift to clean the tableware.

When the tableware does not contain the easily-foaming pollutant and the quantity of the tableware is less than or equal to C, water is fed into the box body, and when the rotating speed of the driving piece is set to be constant B rotation/A, B is less than A, and the opening of the water return opening is maintained in a half-open state; the water inflow in the box body is smaller than the water inflow when the rotating speed of the driving piece is A revolutions/hour, and the spray arm maintains a large spray lift to clean tableware in a state that the spray water flow is reduced.

Compared with the prior art, the application has the advantages that: according to the application, the opening of the water return port is automatically balanced through the real-time density of water flow, so that the stability of the water flow state in the water pumping mechanism is maintained under the condition of not changing power and sacrificing water flow, the stable water flow state is conducive to reducing or even eliminating bubbles in water flow, and the water flow system is automatically maintained in a stable state through balancing water pressure, at the moment, the high jet lift and the high jet water pressure can be maintained even though the jet water flow of the spray arm is reduced, so that a good cleaning effect is achieved.

Drawings

FIG. 1 is a schematic structural diagram of embodiment 1 of the present application;

fig. 2 is a sectional view of fig. 1 (return port fully closed state);

fig. 3 is a sectional view of fig. 1 (fully opened state of the return water port);

FIG. 4 is a schematic view showing the structure of a pump casing in embodiment 1 of the present application;

FIG. 5 is a schematic view of the bottom structure of FIG. 4;

FIG. 6 is an exploded view of FIG. 4;

FIG. 7 is a schematic view of a space vane in embodiment 1;

FIG. 8 is a schematic view of the bottom structure of FIG. 7;

fig. 9 is a schematic structural diagram of embodiment 2 of the present application (a half-open state of the water return port).

Detailed Description

The application is described in further detail below with reference to the embodiments of the drawings.

Example 1:

as shown in fig. 1 to 8, the self-defoaming water flow system of the present embodiment includes a water pumping mechanism disposed in a tank 01 of a cleaning machine and supported at the bottom of the tank 01, a spray arm 02 is connected to the water pumping mechanism, a driving member 5 for powering the water pumping mechanism is disposed outside the tank 01, a water return port 131 whose opening increases with increasing water pressure and whose opening decreases with decreasing water pressure is opened at the bottom of the water pumping mechanism, and when the opening of the water return port 131 is in a maximum state and the driving member 5 is powered, the opening of the water return port 131 further decreases with increasing air bubble amount in the water flow.

In this embodiment, when the power of the driving member 5 just maintains the opening of the water return port 131 at the maximum state, the power of the driving member 5 is kept unchanged, as the amount of bubbles in the water flow increases, the water flow density decreases, the pressure in the water pumping mechanism decreases, the opening of the water return port 131 gradually decreases, the amount of water pumped into the water pumping mechanism in unit time decreases, the amount of water sprayed by the spray arm 02 decreases, the flow state of the water flow in the water pumping mechanism gradually tends to be stable, the degree of stirring of the water flow in the water pumping mechanism decreases, and the amount of bubbles in the water flow gradually decreases.

Specifically, the water pumping mechanism comprises a space guide vane A, an impeller 3 and a pump shell 1, wherein the space guide vane A and the impeller 3 are arranged in the pump shell 1 and are used for sucking water flow from bottom to top.

The pump shell 1 comprises an upper shell 14 and a lower shell 15 which can be buckled up and down to enclose the pump cavity 10, the bottom of the lower shell 15 is provided with a water suction port 11, the edge of the bottom of the lower shell 15 is provided with a supporting edge 13 which extends downwards and is supported on the inner bottom wall of the box 01, a water return port 131 is arranged on the supporting edge 13, the upper shell 14 can be restrained on the lower shell 15 in a vertically floating manner, the supporting edge 13 is positioned at the bottom edge of the lower shell 15, and the edge of the upper shell 14 is provided with a surrounding edge 141 which can seal the water return port 131 after sinking along with the gravity of the upper shell, and open the water return port 131 after floating up hydraulically. By adopting the structure, the automatic adjustment of the opening of the water return port 131 can be realized according to the water pressure in the water pumping mechanism, and the problem of shaking and clamping stagnation of the spray arm caused by unstable flow velocity of water flow is solved.

The lower casing 15 includes a first horizontal portion 151 and a supporting edge 13 extending downward from the edge of the first horizontal portion 151, the water suction port 11 is opened at the central portion of the first horizontal portion 151, the upper casing 14 includes a ring-shaped second horizontal portion 142 corresponding to the first horizontal portion 151, the peripheral edge 141 extends downward from the outer edge of the second horizontal portion 142 and corresponds to the periphery of the supporting edge 13, a cylinder 143 extending upward is disposed at the inner edge of the second horizontal portion 142, the top of the cylinder 143 gradually gathers together radially toward the middle to form the water outlet 12, and the cylinder 143 and the upper surface of the first horizontal portion 151 enclose the pump cavity 10 together. With the above structure, relative floating between the upper case 14 and the lower case 15 is facilitated.

In order to facilitate the connection of the spray arm 02 with the water pumping mechanism, the edge of the water outlet 12 extends upwards to form a water outlet sleeve 121, and the water outlet sleeve 121 is detachably connected with the water inlet at the bottom of the spray arm 02 through a fastening structure.

The upper surface of the first horizontal portion 151 is provided with an upwardly extending limiting post 152, correspondingly, the second horizontal portion 142 is provided with a limiting opening 1421 through which the limiting post 152 passes, and the top of the limiting post 152 is provided with a limiting portion 1521 capable of limiting the upper housing 14 after floating. The spacing distance of the spacing post 152 to the upper shell 14 is basically consistent with the height of the water return port 131, so as to ensure smooth opening and closing of the water return port 131.

The upper surface of the first horizontal portion 151 is recessed at its outer edge to form a receiving groove 1522, and a seal ring 6 capable of sealing in contact with the inner surface of the upper case 14 after the upper case 14 is sunk is embedded in the receiving groove 1522.

In this embodiment, the space vane a includes a cover plate 2 and guide vanes 21, the cover plate 2 is transversely disposed in the middle of the pump casing 1 and separates the inner cavity of the pump casing 1 into an upper cavity 101 and a lower cavity 102 which are relatively independent, the water outlet 12 is communicated with the upper cavity 101, the guide vanes 21 are plural and vertically disposed on the lower surface of the cover plate 2, the plural guide vanes 21 cover the circumferential area of the cover plate 2 and are circumferentially spaced, the guide vanes 21 extend spirally inward from the edge of the cover plate 2 against the water flow direction, the guide flow channels 23 are restrained between two adjacent guide vanes 21, and the corresponding cover plate 2 at the top of the guide vanes 21 is at least partially missing to form a notch 24 for the guide flow channels 23 to be communicated with the upper cavity 101; the impeller 3 is rotatably disposed in the lower chamber 102, and the impeller 3 is a centrifugal impeller. According to the embodiment, the space guide vane and the impeller for axially guiding pressurized axial inflow water and axially outputting the pressurized axial inflow water are arranged in the pump shell so as to meet the water pressure requirement, on the basis, the spray arm is arranged on the pump shell without being matched with the impeller, so that the water flow stability of the inflow spray arm is improved, the rotation stability of the spray arm is further improved, and meanwhile, the impeller is not correspondingly matched with the water inlet of the spray arm, so that the water pressure at the water inlet of the spray arm is stable, and the problems of gas suction and water leakage are avoided.

The water suction port 11 is formed on the bottom wall of the pump shell 1, the bottom wall of the pump shell 1 at the periphery of the water suction port 11 extends from outside to inside along the radial direction from top to bottom to form a first diversion curved surface 111, and the water suction port 11 is positioned at the lowest end of the first diversion curved surface 111 to form a downward detection type water suction port 11. The structure is favorable for further improving the water absorption efficiency, rectifying and guiding the water entering the water absorption port and reducing the energy loss.

The outer ends of the guide vanes 21 are arranged close to the inner peripheral wall of the pump shell 1, the outer ends of the guide vanes 21 are arranged close to the edge of the impeller 3, and in the two adjacent guide vanes 21, the outer end part of the first guide vane 21 and the inner end arrangement part of the second guide vane 21 are staggered, so that a guide flow channel 23 is enclosed, and a notch 24 is formed by the cover plate 2 in a range from the outer end of the corresponding first guide vane 21 to the outer end of the second guide vane 21. By adopting the structure, the notch is reasonably connected with the water outlet end of the water guide channel, so that the energy loss is reduced.

The water outlet 12 is arranged at the central part of the top wall of the pump shell 1, and the upper surface of the cover plate 2 is provided with a converging blade 25 which extends from the edge to the middle in a spiral manner and is used for converging the water conveyed by the notch 24 to the water outlet 12. The structure can rectify and guide the water flow entering the upper cavity, avoid energy loss caused by water flow disorder and improve water pressure and lift.

The upper surface of apron 2 is provided with the water conservancy diversion awl 26 that upwards extends gradually from edge to centre, and the pointed end of this water conservancy diversion awl 26 is arranged corresponding delivery port 12, and the conflux blade 25 is a plurality of and is arranged at apron 2 circumference interval, and the bottom edge of conflux blade 25 is located the upper surface of water conservancy diversion awl 26. The structure can rectify and guide the water flow entering the upper cavity, avoid energy loss caused by water flow disorder and improve water pressure and lift.

The cleaning machine of this embodiment includes box 01, spray arm 02, and box 01 bottom is provided with the return water region 011 of indent, and spray arm 02 rotationally locates on this return water region 011, still includes above-mentioned from defoaming rivers system, and in the return water region 011 was located to the pump water mechanism, driving piece 5 was the motor, locates the outer bottom of box 01 and power take off shaft passed box 01 diapire and be connected with pump water mechanism's impeller 3.

The cleaning method of the embodiment comprises the following steps:

when the tableware contains the easily-foaming pollutant, water is fed into the box body 01, and when the rotating speed of the driving piece 5 is set to be 3000 revolutions per hour, the power of the driving piece 5 just maintains the opening of the water return opening 131 to be in the maximum state;

the power of the driving piece 5 is kept unchanged, the water flow density is reduced along with the increase of the air bubble quantity in the water flow, the pressure in the water pumping mechanism is reduced, the opening degree of the water return port 131 is gradually reduced, the water quantity pumped into the water pumping mechanism in unit time is reduced, and the water quantity sprayed by the spray arm 02 is reduced;

the flow state of water flow in the water pumping mechanism gradually tends to be stable, the stirring degree of the water flow in the water pumping mechanism is weakened, the air bubble quantity in the water flow is gradually reduced, and the spray arm 02 maintains high spray lift of the water column under the state that the water flow rate of spray water is reduced.

When no easy-to-foam pollutant is contained on the tableware and the quantity of the tableware is larger than that of the C sleeve, water is fed into the box body 01, the rotating speed of the driving piece 5 is set to be 3000 revolutions per hour, the power of the driving piece 5 just maintains the opening of the water return port 131 in the maximum state, and the spray arm 02 maintains large water spraying flow and spray lift to clean the tableware.

When the tableware does not contain the easily-foaming pollutant and the quantity of the tableware is less than or equal to C, water is fed into the box body 01, and when the rotating speed of the driving piece 5 is set to be constant at 2000 revolutions per hour, the opening of the water return opening 131 is maintained in a half-open state; the water inflow in the box body 01 is less than the water inflow when the rotating speed of the driving piece 5 is 3000 rpm, and the spray arm 02 maintains a large spray lift to clean tableware under the state that the spray water flow is reduced.

According to the embodiment, the opening of the water return port 131 is automatically balanced through the real-time density of water flow, so that the stability of the water flow state in the water pumping mechanism is maintained under the condition that the power is not changed and the water flow is sacrificed, the stable water flow state is favorable for reducing or even eliminating bubbles in the water flow, and the water flow system is automatically maintained in a stable state through balancing the water pressure, at the moment, the high injection lift and the high injection water pressure can be maintained even though the injection water flow of the spray arm is reduced, and therefore a good cleaning effect is achieved.

Example 2:

this embodiment differs from embodiment 1 in that:

as shown in fig. 9, the water return port 131 is provided with a piercing member 7 for defoaming, and the structure can improve the defoaming effect in cooperation with the self-adjustment of the opening degree of the water return port 131.

The piercing member 7 is movably disposed in the supporting edge 13, is hidden in the supporting edge 13 above the water return opening 131, is moved downward, and extends into the water return opening 131, and a driving body 71 capable of driving the piercing member 7 to move up and down along with the up-and-down floating of the upper casing 14 is disposed in the surrounding edge 141. The driving body 71 is a first magnetic member, the piercing member 7 is plate-shaped, the bottom of the piercing member is provided with saw teeth, the piercing member is a second magnetic member, the first magnetic member is embedded in the surrounding edge 141, the supporting edge 13 is provided with a containing cavity 132 extending upwards from the top edge of the water return port 131, and the second magnetic member is restrained in the containing cavity 132 in a vertically moving manner. With the adoption of the structure, the piercing member 7 can be led to exit the water return port 131 without influencing the water return efficiency under the non-defoaming requirement, and enter the water return port 131 for piercing bubbles under the defoaming requirement.

In the description and claims of the present application, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present application, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the application may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

Claims

1. The utility model provides a from defoaming rivers system, is including locating in box (01) of cleaning machine and supporting the pump water mechanism in box (01) bottom, is connected with spray arm (02) on this pump water mechanism, be provided with driving piece (5) that are used for providing power for pump water mechanism outside box (01), its characterized in that: the bottom of the water pumping mechanism is provided with a water return opening (131) with the opening increased along with the increase of the water pressure and the opening reduced along with the decrease of the water pressure, and when the opening of the water return opening (131) is in the maximum state and the driving piece (5) is powered, the opening of the water return opening (131) is further reduced along with the increase of the air bubble quantity in the water flow.

2. The self-defoaming water flow system of claim 1, wherein: the power of the driving piece (5) just maintains the aperture of the water return opening (131) in the maximum state, the power of the driving piece (5) is kept unchanged, the water flow density is reduced along with the increase of the air bubble quantity in water flow, the pressure in the water pumping mechanism is reduced, the aperture of the water return opening (131) is gradually reduced, the water quantity pumped into the water pumping mechanism in unit time is reduced, the water quantity sprayed by the spray arm (02) is reduced, the water flow state in the water pumping mechanism is gradually stabilized, the stirring degree of the water flow in the water pumping mechanism is weakened, and the air bubble quantity in the water flow is gradually reduced along with the increase of the air bubble quantity in the water flow.

3. The self-defoaming water flow system of claim 2, wherein: the water pumping mechanism comprises a pump shell (1), wherein the pump shell (1) comprises an upper shell (14) and a lower shell (15) which can be buckled up and down to enclose a pump cavity (10), a water suction port (11) is formed in the bottom of the lower shell (15), a supporting edge (13) which extends downwards and is supported on the inner bottom wall of the box body (01) is arranged at the edge of the bottom of the lower shell (15), a water return port (131) is formed on the supporting edge (13), the upper shell (14) can be restrained on the lower shell (15) in a vertically floating manner, and a surrounding edge (141) which can seal the water return port (131) after sinking along with gravity of the upper shell (14) and can be opened after floating up under the action of water power.

4. A self-defoaming water flow system according to claim 3, characterized in that: the lower shell (15) comprises a first horizontal part (151) and a supporting edge (13) extending downwards from the edge of the first horizontal part (151), the water suction port (11) is formed in the central part of the first horizontal part (151), the upper shell (14) comprises an annular second horizontal part (142) which corresponds to the first horizontal part (151), the surrounding edge (141) extends downwards from the outer edge of the second horizontal part (142) and corresponds to the periphery of the supporting edge (13), an upwards extending cylinder body (143) is arranged at the inner edge of the second horizontal part (142), the top of the cylinder body (143) gradually gathers along the radial direction towards the middle to form a water outlet (12), and the cylinder body (143) and the upper surface of the first horizontal part (151) jointly enclose the pump cavity (10).

5. The self-defoaming water flow system of claim 4, wherein: the edge of the water outlet (12) extends upwards to form a water outlet sleeve (121), and the water outlet sleeve (121) is detachably connected with a water inlet at the bottom of the spray arm (02).

6. The self-defoaming water flow system of claim 4, wherein: the upper surface of first horizontal part (151) is provided with spacing post (152) of upwards extending, correspondingly, open on second horizontal part (142) and supply spacing mouth (1421) that spacing post (152) passed, the top of spacing post (152) is provided with spacing portion (1521) that can carry out spacing to upper housing (14) after floating.

7. The self-defoaming water flow system of claim 4, wherein: the upper surface of the first horizontal part (151) is concave downwards at the outer edge of the first horizontal part to form a containing groove (1522), and a sealing ring (6) which can be in contact with and seal with the inner surface of the upper shell (14) after the upper shell (14) is sunken is embedded in the containing groove (1522).

8. A self-defoaming water flow system according to claim 3, characterized in that: the water pumping mechanism comprises a space guide vane (A), an impeller (3) and a pump shell, wherein the space guide vane (A) comprises a cover plate (2) and guide vanes (21), the cover plate (2) is transversely arranged in the middle of the pump shell (1) and divides an inner cavity of the pump shell (1) into an upper cavity (101) and a lower cavity (102) which are relatively independent, the water outlet (12) is communicated with the upper cavity (101), the guide vanes (21) are multiple and vertically arranged on the lower surface of the cover plate (2), the guide vanes (21) cover the circumferential area of the cover plate (2) and are distributed at intervals along the circumferential direction, the guide vanes (21) spirally extend inwards from the edge of the cover plate (2) in the reverse water flow direction, a guide flow channel (23) is restrained between two adjacent guide vanes (21), and a notch (24) for the guide flow channel (23) to be communicated with the upper cavity (101) is formed by at least partially deleting the part of the cover plate (2) corresponding to the top of the guide vanes (21). The impeller (3) can be rotatably arranged in the lower cavity (102), an inlet (31) which is arranged corresponding to the water suction port (11) is formed in the bottom of the impeller (3), and an outlet (32) which is arranged corresponding to the notch (24) is formed in the side part of the impeller.

9. The self-defoaming water flow system according to any one of claims 3 to 8, wherein: the water return port (131) is provided with a puncture piece (7) for defoaming.

10. The self-defoaming water flow system of claim 9 wherein: the piercing member (7) is arranged in the supporting edge (13) in a vertically movable manner, is hidden in the supporting edge (13) above the water return opening (131) in an upward movement manner, and extends into the water return opening (131) in a downward movement manner, and a driving body (71) which can drive the piercing member (7) to move up and down along with the vertical floating of the upper shell (14) is arranged in the surrounding edge (141).

11. The self-defoaming water flow system of claim 10 wherein: the driving body (71) is a first magnetic part, the piercing member (7) is a second magnetic part, the first magnetic part is embedded in the surrounding edge (141), the supporting edge (13) is provided with a containing cavity (132) extending upwards from the top edge of the water return opening (131), and the second magnetic part is restrained in the containing cavity (132) in an up-and-down moving manner.

12. The utility model provides a cleaning machine, includes box (01), spray arm (02), box (01) bottom is provided with return water region (011) of indent, spray arm (02) rotationally locate on this return water region (011), its characterized in that: the self-defoaming water flow system further comprises any one of claims 1 to 11, wherein the water pumping mechanism is arranged in a water return area (011), the driving piece (5) is arranged at the outer bottom of the box body (01) and the power output shaft penetrates through the bottom wall of the box body (01) to be connected with the water pumping mechanism.

13. A cleaning method, characterized in that:

when the tableware contains the easily-foaming pollutant, water is fed into the box body (01), and when the rotating speed of the driving piece (5) is set to be constant A rotation/time, the power of the driving piece (5) just maintains the opening of the water return opening (131) to be in the maximum state;

the power of the driving piece (5) is kept unchanged, the water flow density is reduced along with the increase of the air bubble quantity in the water flow, the pressure in the water pumping mechanism is reduced, the opening of the water return port is gradually reduced, the water quantity pumped into the water pumping mechanism in unit time is reduced, and the water quantity sprayed by the spray arm (02) is reduced;

the flow state of water flow in the water pumping mechanism gradually tends to be stable, the stirring degree of the water flow in the water pumping mechanism is weakened, the air bubble quantity in the water flow is gradually reduced, and the spray arm (02) maintains high spray lift of a water column under the state that the spray water flow is reduced.

14. The cleaning method of claim 13, wherein: when no easy-to-foam pollutant is contained on the tableware and the quantity of the tableware is larger than that of the C sleeve, water is fed into the box body (01), and when the rotating speed of the driving piece (5) is set to be constant A-turn/time, the power of the driving piece (5) just maintains the opening of the water return port (131) in the maximum state, and the spray arm (02) maintains large spray water flow and spray lift to clean the tableware.

15. The cleaning method of claim 13, wherein: when the tableware does not contain the easily-foaming pollutant and the quantity of the tableware is less than or equal to C, water is fed into the box body (01), and when the rotating speed of the driving piece (5) is set to be constant B rotation/B < A, the opening of the water return opening (131) is maintained in a half-open state; the water inflow in the box body (01) is smaller than the water inflow when the rotating speed of the driving piece is A rotation/time, and the spray arm (02) maintains a large spray lift to clean tableware under the state that the spray water flow is reduced.