CN216777000U - Cleaning machine - Google Patents

Abstract

The utility model relates to a cleaning machine which comprises a box body, a bottom spraying arm, a top spraying arm and a pump, wherein the bottom spraying arm is arranged in the box body and is close to the bottom of the box body, the top spraying arm is arranged in the box body and is close to the middle upper part, and the pump is arranged in the box body and is used for pumping water for the bottom spraying arm and the top spraying arm. The bottom spray arm and the lower shell are matched with the upper impeller and the lower impeller together to form a water pumping structure with double outlets, when the driving piece drives the upper impeller and the lower impeller to rotate forwards, the bottom of the first water inlet, the second accommodating cavity, the bottom spray arm and the bottom of the inner cavity of the box body form an independent bottom spray water path together, when the driving piece drives the upper impeller and the lower impeller to rotate backwards, the first water inlet, the third accommodating cavity, the water outlet, the top spray arm and the bottom of the inner cavity of the box body form an independent top spray water path together, the bottom spray water path and the top spray water path are selected to operate, the flow direction of fluid is opposite, energy is saved, and more requirements of consumers are met.

Description

Cleaning machine

Technical Field

The utility model relates to a cleaning machine.

Background

For table type and cabinet type dish washing machines, because the washing space is large, in order to achieve better washing effect, a top spray arm, a middle spray arm and a lower spray arm are generally designed; when the dishwasher works, the washing pump conveys water to the top, middle and lower spray arms through pipelines, the water is sprayed out from the top, middle and lower spray arms and washes tableware and then falls back into a water cup at the bottom of the dishwasher, and the washing pump conveys the fallen water to the top, middle and lower spray arms again to complete a cycle.

The applicant's prior application 202011635878.4 "a dual pump system and a washer using the dual pump system" discloses a dishwasher structure, the top of the washer is provided with a top spraying structure, the bottom is provided with a bottom spraying structure, the middle part of the washing chamber can be provided with a partition board which divides the washing chamber into an upper cavity and a lower cavity which are relatively independent, the top spraying mechanism is positioned in the upper cavity, the bottom spraying structure is positioned in the lower cavity, and the bottom of the washer is provided with a dual pump system which is used for pumping water for the top spraying structure and the bottom spraying structure.

In the above scheme, the double-pump system can pump water only for the bottom spray structure, and can also pump water for the bottom spray structure and the top spray structure simultaneously, accordingly, when tableware is cleaned, only the lower cavity can be used for cleaning, and the upper cavity and the lower cavity can also be used for cleaning simultaneously. However, on the basis of adopting the open type double-pump system, the structure cannot realize that the upper cavity is adopted alone for cleaning, but the volume of the upper cavity can be smaller than that of the lower cavity generally, when the quantity of tableware to be cleaned is small, the tableware cannot be cleaned only by the upper cavity with smaller volume, energy waste is caused to a certain extent, and the consumption requirement cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of the prior art, and provides a cleaning machine which can realize independent water pumping of top spraying and bottom spraying by switching the flowing direction of fluid between forward flow and reverse flow so as to save energy and meet the requirements of consumers.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the utility model provides a cleaning machine, includes box, bottom spray arm, top spray arm and pump, the bottom spray arm is located in the box and is close to the bottom half and arranges, the top spray arm is located in the box and is close to well upper portion and arranges, the pump is located the box and is used for bottom spray arm, top spray arm pump water, the pump include:

the upper impeller is provided with a first shaft positioned in the center and first blades which are distributed on the circumferential surface of the first shaft at intervals along the circumferential direction and extend along the axial direction;

the lower impeller is provided with a second shaft positioned in the center and second blades which are distributed at intervals along the circumferential direction on the periphery of the second shaft;

the upper shell is provided with a first accommodating cavity for mounting the upper part of the upper impeller, the top wall and/or the side wall of the upper shell are/is provided with spray holes communicated with the first accommodating cavity, and the upper shell forms the bottom spray arm;

the lower shell is arranged below the upper shell, a second accommodating cavity for mounting the lower part of the upper impeller is formed at the upper part of the lower shell, a third accommodating cavity for mounting the lower impeller is formed at the lower part of the lower shell, the second accommodating cavity is communicated up and down, the upper port of the second accommodating cavity is communicated with the first accommodating cavity, the lower port of the second accommodating cavity is communicated with the third accommodating cavity, a first water inlet for supplying water into the second accommodating cavity is formed in the side wall of the upper part of the lower shell, a water outlet for supplying water output from the third accommodating cavity is formed in the side wall of the lower part of the lower shell, and the water outlet is communicated with the top spray arm; and

and the driving piece is arranged at the bottom of the box body, and a power output shaft is connected with the lower impeller and the upper impeller and used for driving the lower impeller and the upper impeller to rotate forwards and/or backwards.

Under the state that the driving piece drives the upper impeller and the lower impeller to rotate forwards, the bottoms of the first water inlet, the second accommodating cavity, the bottom spraying arm and the inner cavity of the box body form a bottom spraying water path together and independently; under the state that the driving piece drives the upper impeller and the lower impeller to rotate reversely, the first water inlet, the third accommodating cavity, the water outlet, the top spraying arm and the bottom of the inner cavity of the box body jointly form an independent top spraying water path.

Preferably, the lower casing link up from top to bottom and the top forms the open top, the bottom forms the open bottom, it has the second water inlet to open on the diapire of bottom spray arm, the open top links up with this second water inlet mutually, thereby the lower extreme of lower casing supports and leans on the box inner wall to seal the open bottom, seal the bottom in third holding chamber. This structure is convenient for produce and make casing down, when the installation, can pass through the fix with screw on the box diapire with the outward flange of casing bottom down, practices thrift the material of casing bottom down, also can avoid the accumulation of tiny residue.

Preferably, the lower part of the lower casing has an inner diameter larger than that of the upper part of the lower casing so as to form a step surface at the junction, the first water inlet is opened on the side wall of the upper part of the lower casing, and the lower edge of the first water inlet is positioned on the step surface. The first water inlet is arranged on the step surface, and water can be conveniently fed by utilizing the flow guide effect of the step surface on water.

In order to facilitate production and manufacture, the first water inlet is an annular opening extending along the circumferential direction of the lower shell, and the step surface is provided with a support rib which extends longitudinally and is used for supporting the upper part of the lower shell on the step surface.

Preferably, the outer side wall of the support rib forms a flow guiding inclined plane which gradually inclines outwards along the radial direction of the lower shell from top to bottom. This structure is favorable to leading the rivers of first water inlet, avoids the disorderly striking of rivers and influences the effect of intaking.

Preferably, the bottom of the box body is provided with a water supply pipeline for communicating the third accommodating cavity with the top spray arm, and the side of the lower shell is provided with a guide pipe for tangentially connecting the water outlet with the lower end of the water supply pipeline. The structure is beneficial to reducing the energy loss of water flow, and the top spraying is kept to have higher water pressure and flushing capacity.

Preferably, the first shaft sleeve of the upper impeller is arranged on the periphery of the power output shaft of the driving part, the upper part of the upper impeller is a centrifugal structure positioned in the first accommodating cavity, and the lower part of the upper impeller is an axial flow structure positioned in the second accommodating cavity. The axial flow structure is used for guiding water in the axial direction, and the centrifugal structure is used for dispersing the water flow in the radial direction.

Preferably, the second shaft of the lower impeller is sleeved on the periphery of the power output shaft of the driving part, an upper cover plate and a lower cover plate are arranged on the periphery of the second shaft at intervals along the axial direction along the water flow direction, the second blades are arranged between the upper cover plate and the lower cover plate, a water inlet arranged corresponding to a lower port of the second accommodating cavity is formed in the central part of the upper cover plate, and a synthetic water delivery port is defined between the upper cover plate, the lower cover plate and two adjacent second blades. The third accommodating cavity forms a relatively closed volute, and the lower impeller is used for providing water drawing power for the relatively closed volute, so that the lift and the water flow of top spraying water can be improved.

Preferably, the inner end surface of the second blade forms a first flow guiding arc surface gradually extending to the second shaft from top to bottom, the upper end of the first flow guiding arc surface is tangentially connected with the inner edge of the water inlet, and the lower end of the first flow guiding arc surface is arranged close to the lower end of the second shaft. And a second flow guide arc surface in smooth transition is formed at the joint of the lower end of the second shaft and the upper wall surface of the lower cover plate. The structure is favorable for guiding water flow and reducing energy loss.

Compared with the prior art, the utility model has the advantages that: the bottom spray arm and the lower shell are matched with the upper impeller and the lower impeller together to form a water pumping structure with double outlets, when the driving piece drives the upper impeller and the lower impeller to rotate forwards, the bottom of the first water inlet, the second accommodating cavity, the bottom spray arm and the bottom of the inner cavity of the box body form an independent bottom spray water path together, when the driving piece drives the upper impeller and the lower impeller to rotate backwards, the first water inlet, the third accommodating cavity, the water outlet, the top spray arm and the bottom of the inner cavity of the box body form an independent top spray water path together, the bottom spray water path and the top spray water path are selected to operate, the flow direction of fluid is opposite, energy is saved, and more requirements of consumers are met.

Drawings

FIG. 1 is a schematic view of a partial structure (a hidden part of a box) according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a schematic structural diagram of a lower housing according to an embodiment of the present invention;

FIG. 5 is a schematic view of another angle of the lower housing according to the embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a lower impeller according to an embodiment of the present invention;

fig. 7 is a cross-sectional view of fig. 6.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 7, the cleaning machine of the embodiment includes a box 6, a bottom spray arm, a top spray arm 5 and a pump a, wherein the bottom spray arm is disposed in the box 6 and is close to the bottom of the box 6, the top spray arm 5 is disposed in the box 6 and is close to the middle upper portion, the top spray arm 5 can spray downwards when being located at the top of the box 6, and the top spray arm 5 can spray upwards when being located at the middle of the box 6. The pump is arranged in the box body 2 and is used for pumping water for the bottom spray arm and the top spray arm 5.

In the present embodiment, the pump includes an upper impeller 1, a lower impeller 2, an upper casing 3, a lower casing 4, and a driving member 7. The upper impeller 1 includes a first shaft 11 located at the center and first blades 12 that are circumferentially spaced apart from each other on the circumferential surface of the first shaft 11 and extend in the axial direction. The lower impeller 2 has a second shaft 21 located at the center and second blades 22 circumferentially spaced apart from each other on the outer periphery of the second shaft 21. The upper casing 3 has a first receiving chamber 31 for mounting the upper portion of the upper impeller 1, and the top wall of the upper casing 3 is opened with a spray hole 32 in fluid communication with the first receiving chamber 31, and the upper casing 3 constitutes the bottom spray arm. The lower casing 4 is arranged below the upper casing 1, the upper part of the lower casing 4 is formed with a second accommodating cavity 41 for installing the lower part of the upper impeller 1, the lower part of the lower casing 4 is formed with a third accommodating cavity 42 for installing the lower impeller 2, the second accommodating cavity 41 is communicated with the upper end and the lower end, the upper end is communicated with the first accommodating cavity 31, the lower end is communicated with the third accommodating cavity 42, the side wall of the upper part of the lower casing 4 is provided with a first water inlet 411 for water to enter the second accommodating cavity 41, the side wall of the lower part of the lower casing 4 is provided with a water outlet 421 for water to be output from the third accommodating cavity 42, and the water outlet 421 is communicated with the top spray arm 5. The driving part 7 is a motor and is arranged on the outer bottom wall of the box body 6, and a power output shaft 71 of the driving part 7 penetrates through the bottom wall of the box body 6 to be connected with the lower impeller 2 and the upper impeller 1 and is used for driving the lower impeller 2 and the upper impeller 1 to rotate forwards and/or reversely.

Above-mentioned lower casing 4 link up from top to bottom and the top forms the open 401 in top, the bottom forms the open 402 in bottom, and it has second water inlet 33 to open on the diapire of bottom spray arm, and the open 401 in top links up with this second water inlet 33 mutually, thereby the lower extreme of lower casing 4 supports and seals the open 402 in bottom, seals the bottom of third holding chamber 42 on leaning on the diapire in the box 6. This structure is convenient for produce and make casing 4 down, when the installation, can pass through the fix with screw on 6 diapalls of box with the outward flange of casing 4 bottom down, practices thrift the material of casing 4 bottom down, also can avoid the accumulation of tiny residue.

The lower portion of the lower case 4 has an inner diameter larger than that of the upper portion to form a step surface 43 at the junction, and the first water inlet 411 is opened on the side wall of the upper portion of the lower case 4 with the lower edge on the step surface 43. The first water inlet 411 is arranged on the step surface 43, and water can be conveniently fed by utilizing the flow guiding effect of the step surface 43 on water.

For convenience of production and manufacture, the first water inlet 411 is an annular opening extending along the circumferential direction of the lower housing 4, and a support rib 431 extending longitudinally and used for supporting the upper part of the lower housing 4 on the step surface 43 is provided on the step surface 43. The outer sidewall of the support rib 431 forms a flow guiding inclined plane 432 which is gradually inclined outwards from top to bottom along the radial direction of the lower shell 4, and the structure is favorable for guiding the water flow of the first water inlet 411, so that the water flow is prevented from being disturbed and impacted to influence the water inlet effect.

The bottom of the box body 6 is provided with a water supply pipeline 8 for communicating the third accommodating cavity 42 with the top spray arm 5, and the side of the lower shell 4 is provided with a guide pipe 422 for tangentially connecting a water outlet 421 with the lower end of the water supply pipeline 8. The structure is beneficial to reducing the energy loss of water flow, and the top spraying is kept to have higher water pressure and flushing capacity.

In the present embodiment, the first shaft 11 of the upper impeller 1 is sleeved on the periphery of the power output shaft 71 of the driving member 7, the upper portion of the upper impeller 1 is a centrifugal structure located in the first accommodating cavity 31, and the lower portion thereof is an axial flow structure located in the second accommodating cavity 41. The axial flow structure is used for guiding water in the axial direction, and the centrifugal structure is used for dispersing the water flow in the radial direction.

The second shaft 21 of the lower impeller 2 is sleeved on the periphery of the power output shaft 71 of the driving member 7, an upper cover plate 23 and a lower cover plate 24 are axially arranged on the periphery of the second shaft 21 at intervals along the water flow direction, the second blades 22 are arranged between the upper cover plate 23 and the lower cover plate 24, a water inlet 231 arranged corresponding to a lower port of the second accommodating cavity 41 is formed in the central part of the upper cover plate 23, and a synthetic water delivery port 241 is defined between the upper cover plate 23, the lower cover plate 24 and two adjacent second blades 22. The third accommodating cavity 42 of the present embodiment forms a relatively closed volute, and the lower impeller 2 is used for providing water drawing power for the relatively closed volute, which is beneficial to improving the lift and water flow rate of the top spraying water.

The inner end surface of the second blade 22 forms a first air guiding arc surface 221 gradually extending from top to bottom toward the second shaft 21, the upper end of the first air guiding arc surface 221 is tangentially connected with the inner edge of the water inlet 231, and the lower end of the first air guiding arc surface 221 is arranged close to the lower end of the second shaft 21. The lower end of the second shaft 21 forms a smoothly-transitional second air guiding arc surface 211 at the joint with the upper wall surface of the lower cover plate 24. The structure is favorable for guiding water flow and reducing energy loss.

For a cleaning machine with a partition board arranged in the middle of a washing cavity, a top spray arm 5 is generally arranged in an upper cavity and is arranged close to the upper wall surface of the partition board, and a water spray hole on the top spray arm 5 is formed in the top wall of the top spray arm and is used for spraying upwards to clean tableware in the upper cavity; for the cleaning machine without a partition plate in the washing cavity, the top spraying arm 5 can be arranged at the top of the washing cavity besides the structure, and the water spraying holes in the top spraying arm 5 are formed in the bottom wall of the washing cavity and used for spraying downwards. In any of the above configurations, the bottom spray arm and the top spray arm 5 can be independently controlled to be switched to each other for use. When the driving piece 7 drives the upper impeller 1 and the lower impeller 2 to rotate forwards, the first water inlet 411, the second accommodating cavity 41, the bottom spraying arm and the bottom of the inner cavity of the box body 6 jointly form an independent bottom spraying water path; when the driving part 7 drives the upper impeller 1 and the lower impeller 2 to rotate reversely, the first water inlet 411, the third accommodating cavity 42, the water outlet 421, the top spraying arm 5 and the bottom of the inner cavity of the box body 6 jointly form an independent top spraying water path.

In the whole washing process, bottom spraying or top spraying can be selected; alternatively, the bottom shower and the top shower may be alternately performed by controlling the power output shaft 71 of the driving member 7 to rotate forward and backward.

Directional terms such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the utility model, but are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion, respectively), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion and/or be transported to the second portion, and may be a direct communication between the first portion and the second portion, or an indirect communication between the first portion and the second portion via at least one third element, such as a fluid channel, e.g., a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber that allows a fluid to flow through, or a combination thereof.

Claims (10)

1. The utility model provides a cleaning machine, includes box (6), bottom spray arm, top spray arm (5) and pump, the bottom spray arm is located in box (6) and is close to box (6) bottom and arranges, top spray arm (5) are located in box (6) and are close to well upper portion and arrange, the pump is located box (6) and is used for bottom spray arm, top spray arm (5) pump water, its characterized in that the pump include:

an upper impeller (1) having a first shaft (11) located at the center and first blades (12) that are circumferentially spaced apart from each other on the circumferential surface of the first shaft (11) and extend in the axial direction;

a lower impeller (2) having a second shaft (21) located at the center and second blades (22) circumferentially spaced apart from each other on the outer periphery of the second shaft (21);

the upper shell (3) is provided with a first accommodating cavity (31) for mounting the upper part of the upper impeller (1), the top wall and/or the side wall of the upper shell (3) is/are provided with spray holes (32) which are communicated with the first accommodating cavity (31) in a fluid mode, and the upper shell (3) forms the bottom spray arm;

the lower shell (4) is arranged below the upper shell (3), a second accommodating cavity (41) used for installing the lower part of the upper impeller (1) is formed in the upper part of the lower shell (4), a third accommodating cavity (42) used for installing the lower impeller (2) is formed in the lower part of the lower shell (4), the second accommodating cavity (41) is communicated up and down, the upper end opening of the second accommodating cavity is communicated with the first accommodating cavity (31), the lower end opening of the second accommodating cavity is communicated with the third accommodating cavity (42), a first water inlet (411) for supplying water into the second accommodating cavity (41) is formed in the side wall of the upper part of the lower shell (4), a water outlet (421) for outputting water from the third accommodating cavity (42) is formed in the side wall of the lower part of the lower shell (4), and the water outlet (421) is communicated with the top spraying arm (5); and

and the driving piece (7) is arranged at the bottom of the box body (6), and a power output shaft (71) is connected with the lower impeller (2) and the upper impeller (1) and is used for driving the lower impeller (2) and the upper impeller (1) to rotate forwards and/or backwards.

2. The cleaning machine of claim 1, wherein: lower casing (4) link up from top to bottom and the top forms open-topped (401), the bottom forms open-bottomed (402), it has second water inlet (311) to open on the diapire of bottom spray arm, open-topped (401) links up with this second water inlet (311) mutually, thereby the lower extreme of lower casing (4) supports to lean on box (6) interior diapire to seal open-bottomed (402), seal the bottom of third holding chamber (42).

3. The cleaning machine of claim 2, wherein: the inner diameter of the lower part of the lower shell (4) is larger than that of the upper part of the lower shell, so that a step surface (43) is formed at the joint, the first water inlet (411) is arranged on the side wall of the upper part of the lower shell (4), and the lower edge of the first water inlet is positioned on the step surface (43).

4. The cleaning machine of claim 3, wherein: the first water inlet (411) is an annular opening extending along the circumferential direction of the lower shell (4), and the step surface (43) is provided with a support rib (431) extending longitudinally and used for supporting the upper part of the lower shell (4) on the step surface (43).

5. The cleaning machine of claim 4, wherein: the outer side wall of the support rib (431) forms a flow guide inclined plane (432) which is gradually inclined outwards along the radial direction of the lower shell (4) from top to bottom.

6. The cleaning machine of any one of claims 1-5, wherein: the water supply pipe (8) that is used for being linked together third holding chamber (42) and top spray arm (5) is provided with in box (6) bottom, casing (4) side is provided with down and is used for honeycomb duct (422) of being connected delivery port (421) and the lower extreme tangential of water supply pipe (8).

7. The cleaning machine of any one of claims 1-5, wherein: the first shaft (11) of the upper impeller (1) is sleeved on the periphery of a power output shaft (71) of the driving part (7), the upper part of the upper impeller (1) is of a centrifugal structure positioned in the first accommodating cavity (31), and the lower part of the upper impeller is of an axial flow structure positioned in the second accommodating cavity (41).

8. The cleaning machine of any one of claims 1-5, wherein: the periphery of a power output shaft (71) of the driving piece (7) is sleeved with a second shaft (21) of the lower impeller (2), an upper cover plate (23) and a lower cover plate (24) which are arranged at intervals along the axial direction are arranged on the periphery of the second shaft (21) along the water flow direction, the second blades (22) are arranged between the upper cover plate (23) and the lower cover plate (24), a water inlet (231) which is arranged corresponding to a lower port of the second accommodating cavity (41) is formed in the central part of the upper cover plate (23), and a synthetic water conveying port (241) is formed by the upper cover plate (23), the lower cover plate (24) and two adjacent second blades (22) in a surrounding mode.

9. The cleaning machine of claim 8, wherein: the inner end face of the second blade (22) forms a first flow guiding arc face (221) gradually extending towards the second shaft (21) from top to bottom, the upper end of the first flow guiding arc face (221) is tangentially connected with the inner edge of the water inlet (231), and the lower end of the first flow guiding arc face (221) is close to the lower end of the second shaft (21).

10. The cleaning machine of claim 8, wherein: the lower end of the second shaft (21) forms a second flow guide arc surface (211) in smooth transition at the joint with the upper wall surface of the lower cover plate (24).

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