CN113520262A

CN113520262A - Cabinet type cleaning machine

Info

Publication number: CN113520262A
Application number: CN202010288660.XA
Authority: CN
Inventors: 施郑赞; 张昌海
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2021-10-22
Anticipated expiration: 2040-04-14
Also published as: CN113520262B

Abstract

The invention relates to a cabinet type cleaning machine which comprises a box body and a double-layer spraying mechanism, wherein the double-layer spraying mechanism comprises a first spraying arm, a second spraying arm, a water guide box and a water guide pipeline, the first spraying arm is arranged close to the bottom of a washing cavity, the second spraying arm is positioned above the first spraying arm, the water guide box is connected below the first spraying arm and used for guiding water at the bottom of the washing cavity upwards, the water guide pipeline is connected between the side part of the water guide box and the second spraying arm, and the water guide pipeline is arranged close to the inner wall of the box body. According to the invention, the first spray arm and the second spray arm which spray relatively up and down are arranged in the washing cavity, so that the spraying range is expanded, the cleaning dead angle can be eliminated, and the cleaning effect is improved; set up the water guide box, can intake from the bottom of water guide box, top and lateral part go out water to supply water to first spray arm, second spray arm, spray with the realization bilayer from top to bottom, and the aqueduct is pressed close to the box inner wall and is arranged, can avoid occuping the washing chamber space.

Description

Cabinet type cleaning machine

Technical Field

The invention relates to a cabinet type cleaning machine.

Background

With the increasing living standard of people, the dish washing machine is used as a kitchen household appliance and is more and more introduced into families. The dish-washing machines on the market at present are generally divided into a table type dish-washing machine, a cabinet type dish-washing machine and a trough type dish-washing machine, wherein the table type dish-washing machine is an integral independent structure and is generally placed on a table top for use; the cabinet type dish washing machine is also an independent structure, but needs to be embedded into a kitchen cabinet for use; the sink dishwasher is combined with a sink and is generally installed in a kitchen cabinet for use.

The above-mentioned various types of dish-washing machines generally achieve the cleaning action by lifting water up by a water pump and spraying it to the dishes, fruits and vegetables in the cleaning space, and a single-layer spraying system is adopted, and its impeller is only in accordance with the flow rate and pressure required by the single-layer spraying system. When the tableware washing machine works, tableware is arranged above the spray arm, and water flow sprayed by the spray arm washes the tableware from bottom to top. Because the washing rivers only have the impact force in limited direction, so current basin dish washer is put and the tableware appearance requirement is very high to user's tableware, and the tableware is put incorrectly or the tableware shape mismatch can lead to the cleanliness factor unsatisfactory, and when the tableware puts under the exact scene, the tableware top of part shape also probably has impurity to remain, influences washing effect and user experience.

The double-layer spraying system which sprays vertically and simultaneously can effectively improve the cleaning effect, and therefore, the structure which can meet the flow and pressure required by the double-layer spraying system is particularly necessary.

Disclosure of Invention

The invention aims to solve the technical problem of providing a cabinet type cleaning machine which can provide stable water flow of an upper layer and a lower layer so as to improve the cleaning effect aiming at the current situation of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a cabinet type cleaning machine, includes that box and double-deck spray mechanism, the inside cavity of box forms the washing chamber, double-deck spray arm mechanism locates the bottom half and is used for pumping the water of bottom half upwards, its characterized in that: the double-layer spraying mechanism comprises a first spraying arm, a second spraying arm, a water guide box and a water guide pipeline, wherein the first spraying arm is arranged close to the bottom of the washing cavity, the second spraying arm is positioned above the first spraying arm, the water guide box is connected below the first spraying arm and used for guiding water at the bottom of the washing cavity upwards, the water guide pipeline is connected between the side part of the water guide box and the second spraying arm, and the water guide pipeline is arranged close to the inner wall of the box body.

In the above scheme, the bottom of the box body is provided with a concave draining area, the water guiding box is arranged in the draining area and supported on the bottom wall of the box body through the water guiding seat, and the first spraying arm is arranged above the draining area. The water guide box is arranged in the water draining area, so that water in the water draining area can conveniently enter the water guide box.

Preferably, the perisporium in waterlogging caused by excessive rainfall region outwards forms from bottom to top and leads the liquid level gradually, this drainage face is pressed close to lead the lower part of water piping and is arranged, the box inner wall is pressed close to in the middle part of water piping and arranges, the upper portion of water piping transversely puts in the washing chamber and goes out the liquid end and connect the second spray arm. The structure is convenient for making the depth of the draining area larger, and the volume of the draining area is reduced as much as possible, so that the water consumption for each time of washing is reduced on the premise of being convenient for drawing water.

Preferably, a draining board is transversely arranged at the lower part of the draining area, and the draining board is positioned above the diversion seat and below the water guide box.

As an improvement, the double-layer spraying mechanism also comprises an impeller component and a space guide impeller, the first spraying arm is hollow inside to form a water collecting cavity, the lower wall surface of the first spray arm is provided with a first water inlet for water to enter the water collecting cavity, the impeller component can be rotatably arranged below the first spray arm and is used for pumping water into the water collecting cavity of the first spray arm, the water guide box is provided with an upper cavity and a lower cavity which are communicated up and down, the bottom of the lower cavity is provided with a second water inlet, the top of the upper cavity is provided with a first water outlet communicated with the first water inlet of the first spray arm, the upper part of the impeller component can be rotatably arranged at the lower parts of the lower cavity and the upper cavity, the space guide impeller is arranged in the upper cavity and is used for guiding water in the lower cavity upwards, and a second water outlet which is used for outputting water and is communicated with the liquid inlet end of the water guide pipeline is formed in the side part of the lower cavity. The impeller assembly is used for pumping water into the water guide box and providing power for pumping water into the first spray arm and directly pumping water out from the side part of the water guide box, and the side part of the water guide box is connected with the second spray arm through the water guide pipeline, so that the water pumping mechanism can realize upper and lower layer double-layer spraying, the spraying range is expanded, the cleaning dead angle is favorably eliminated, and the cleaning effect is improved; the space guide vane wheel is used for guiding water pumped into the first spray arm, so that the energy loss in water flow ascending can be reduced, and the larger stable water flow of the upper layer can be kept. The first spray arm of the first spray arm preferably, the inner diameter of the upper cavity is larger than the inner diameter of the lower cavity, so that an installation saddle is formed at the joint of the upper cavity and the lower cavity, the space guide wheel is constrained on the installation saddle, a liquid guide channel spirally extending along the radial direction is formed near the edge of the space guide wheel, the water inlet end of the liquid guide channel is communicated with the lower cavity, and the liquid outlet end of the liquid guide channel is communicated with the upper cavity above the liquid guide channel. The water flowing out of the second water outlet is pumped out from the lower cavity through the impeller assembly, the impeller assembly simultaneously pumps water upwards, the upward water flow is easy to collide with each other in the upper cavity to cause energy loss, the space guide impeller is arranged to guide the water in the lower cavity upwards and convey the water through a specific spiral flow channel, and therefore the energy loss of the upward water flow is reduced, and the flow speed of the water sprayed by the first spray arm are kept.

In the above scheme, the impeller assembly includes a centrifugal impeller located at an upper portion and an axial-flow impeller located at a lower portion, a main body portion of the centrifugal impeller is located in the lower cavity, and an upper portion of the centrifugal impeller extends into a lower portion of the upper cavity. The space guide impeller is arranged around the periphery of the upper part of the centrifugal impeller, the liquid guide channel is arranged on the periphery of the upper part of the centrifugal impeller, and the spiral direction of the liquid guide channel is the same as the rotating direction of the centrifugal impeller. The axial-flow impeller is used for pumping water flow upwards into the water guide box, the main body part of the centrifugal impeller is mainly used for pumping water in the lower cavity out through the second water outlet, and the upper part of the centrifugal impeller is mainly used for enabling water entering the upper cavity from the lower cavity to enter the liquid guide channel along the radial direction and further guiding the water upwards so as to apply work to more water flows and keep larger flow and flow velocity of the water flows.

As an improvement, the upper wall surface of the space guide impeller is provided with a plurality of first blades which are opposite to the spiral direction of the liquid guide channel and used for gathering water towards the middle, the first blades are arranged on the upper wall surface of the space guide impeller at intervals along the circumferential direction, the top edge of each first blade is connected with the inner top wall of the upper cavity, and the inner end of each first blade is aligned with the edge of the first water outlet above the inner end of the first blade or is arranged corresponding to the inner side of the first water inlet. Above-mentioned structure can assemble the water that drain channel flows to the centre, and water is in the first spray arm of first water inlet with spiral entering through first spray arm again after assembling, not only can further reduce the energy loss among the rivers transportation process, and rivers spiral motion's power still is favorable to driving first spray arm rotation through rivers viscous force moreover.

Preferably, the first water inlet of the first spray arm is connected with the first water outlet of the water guide box through a first water guide pipeline, the inner diameter of the lower portion of the first water guide pipeline is gradually increased from top to bottom, the lower edge of the lower portion of the first water guide pipeline corresponds to the middle of the first blade, and the first blade is gradually downwards formed into a water guide step which is sequentially reduced from the joint of the first blade and the first water outlet in the vertical direction. The central part of the upper wall surface of the space guide impeller extends inwards and upwards gradually from the outer edge of the water guide step to form an arc-shaped guide surface, and the inner edge of the guide surface is positioned on the inner side of the inner edge of the water guide step. The structure is beneficial to improving the centralized guide effect on the water flow on the upper part of the upper cavity body, and further reduces the energy loss.

In order to facilitate the first spray arm to be rotatably connected to the top of the water guide box, a water guide sleeve extending downwards around the first water inlet is arranged on the lower wall surface of the first spray arm, and the water guide sleeve can be rotatably inserted into the first water guide pipeline. An assembly platform for supporting the lower end of the water guide sleeve is formed in the first water guide pipeline and is close to the lower portion of the first water guide pipeline, and a rotating bearing is arranged between the outer peripheral wall of the water guide sleeve and the inner peripheral wall of the first water guide pipeline.

Preferably, the space guide impeller is provided with a top plate and second blades spirally extending outwards from the outer edge of the bottom wall of the top plate along the circumferential direction, and the liquid guide channel is formed between every two adjacent second blades. And a sealing sheet capable of sealing the top of the liquid guide channel is connected between the top edge of the second blade and the outer edge of the top plate, the sealing sheet, the lower wall surface of the top plate and each second blade jointly enclose a containing cavity positioned at the central part, and the upper part of the centrifugal impeller is positioned in the containing cavity. The sealing piece is arranged to seal the top of the liquid guide channel, so that the energy loss of water in the conveying process is reduced.

In order to facilitate the limitation of the space guide impeller, the inner peripheral wall of the upper cavity is provided with a limiting part which is clamped with the outer edge of the second blade so as to limit the second blade in the circumferential direction.

In order to facilitate production, assembly and subsequent cleaning, the water guide box comprises an upper shell and a lower shell which are connected in a detachable mode, an upper cavity is formed in the hollow portion of the inner portion of the upper shell and is provided with an opening at the bottom, a lower cavity is formed in the inner portion of the lower shell and is provided with an opening at the top, the edge of the opening at the top of the lower shell extends outwards to form the mounting tray, and the lower edge of the upper shell abuts against the edge, close to the outer edge, of the mounting tray. The outer fringe of installation saddle upwards extends the formation and can overlap the installation cover of putting at last casing periphery, and the top edge of this installation cover is provided with upwards extends and can block the buckle of putting at last casing top edge.

In each of the above aspects, the centrifugal impeller includes a shaft located in the middle and centrifugal blades arranged at intervals in the radial direction on the outer periphery of the shaft, the upper portions of the centrifugal blades are located above the shaft, and the lower portions of the centrifugal blades are arranged corresponding to the outer periphery of the shaft.

Preferably, the outer circumferential wall of the shaft forms a first arc-shaped flow guide surface extending gradually radially outward from bottom to top, and the middle portion of the centrifugal vane is connected to an upper end of the first arc-shaped flow guide surface. The structure is beneficial to guiding water from bottom to top and dispersing the water along the radial direction, and is beneficial to pumping the water out from the second water outlet.

As an improvement, the top edge of the shaft continues to extend along the radian of the first arc-shaped guide surface to form guide vanes respectively clamped on the two side walls of the centrifugal blade, and the outer ends of the guide vanes are arranged corresponding to the top edge of the lower cavity. This structure is favorable to leading water to the upper chamber lower part, and leads to the input of liquid guide channel, is favorable to reducing energy loss.

In a further improvement, the inner edge of the upper part of the centrifugal blade is gradually bent from bottom to top along the radial direction to form an arc surface which is concave relative to the lower part of the centrifugal blade, and a concave area is formed between the upper part of the centrifugal blade and the top wall of the guide vane and between the upper part of the centrifugal blade and the top of the shaft. In the rotating process of the centrifugal impeller, negative pressure can be formed at the depressed area, so that water in the lower cavity can be sucked upwards, and the water pumping effect is improved.

Preferably, the bottom of the water guide box is provided with a guide sleeve extending downwards from the edge of the second water inlet, the axial-flow impeller is arranged in the guide sleeve, a driving part is arranged below the guide sleeve, and an output shaft of the driving part extends upwards and is sequentially connected with the axial-flow impeller and the centrifugal impeller. The flow guide sleeve is beneficial to improving the efficiency of upward water drawing.

Compared with the prior art, the invention has the advantages that: according to the invention, the first spray arm and the second spray arm which spray relatively up and down are arranged in the washing cavity, so that the spraying range is expanded, the cleaning dead angle can be eliminated, and the cleaning effect is improved; set up the water guide box, can intake from the bottom of water guide box, top and lateral part go out water to supply water to first spray arm, second spray arm, spray with the realization bilayer from top to bottom, and the aqueduct is pressed close to the box inner wall and is arranged, can avoid occuping the washing chamber space.

Drawings

FIG. 1 is a schematic structural diagram of 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 centrifugal impeller according to an embodiment of the present invention;

FIG. 5 is a schematic view of the structure of FIG. 4 from another angle;

FIG. 6 is a schematic structural diagram of a space guide vane wheel according to an embodiment of the present invention;

FIG. 7 is a schematic view of the structure of FIG. 6 from another angle;

FIG. 8 is a schematic structural diagram of a cleaning machine according to an embodiment of the present invention;

fig. 9 is a cross-sectional view of fig. 8.

Detailed Description

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

As shown in fig. 1 to 9, the cabinet type washing machine of the present embodiment includes a cabinet 7 and a double-layer spraying mechanism a, the cabinet 7 is hollow to form a washing chamber 71, the side of the cabinet 7 has an opening, and the opening is provided with a door for placing dishes into the washing chamber 71. The double-layer spray arm mechanism a is arranged at the bottom of the box body 7 and is used for pumping up water at the bottom of the box body 7.

The double-deck spray mechanism a of this embodiment includes first spray arm 1, second spray arm 5, water guide box 3 and aqueduct 35, first spray arm 1 is close to the bottom of washing chamber 71 and arranges, second spray arm 5 is located first spray arm 1 top, water guide box 3 is connected in first spray arm 1 below and is used for upwards guiding the water of washing chamber 71 bottom, aqueduct 35 is connected between 3 lateral parts of water guide box and second spray arm 5, and this aqueduct 35 presses close to the inner wall of box 7 and arranges.

The bottom of the box body 7 is provided with a concave draining area 72, the water guiding box 3 is arranged in the draining area 72 and supported on the bottom wall of the box body 7 through the diversion seat 6, and the first spray arm 1 is arranged above the draining area 72. The peripheral wall of the draining area 72 is gradually inclined outwards from bottom to top to form a liquid guide surface 721, the lower part 351 of the water guide pipeline 35 is arranged close to the liquid guide surface 721, the middle part 352 of the water guide pipeline 35 is arranged close to the inner side wall of the box body 7, the upper part 353 of the water guide pipeline 35 is transversely arranged in the washing cavity 71, and the liquid outlet end of the water guide pipeline is connected with the second spray arm 5. The structure facilitates the depth of the draining area 72 to be larger, and reduces the volume of the draining area 72 as much as possible, thereby reducing the amount of water for washing each time on the premise of facilitating water drawing. A draining plate 73 is transversely arranged at the lower part of the draining area 72, the draining plate 73 is positioned above the diversion seat 6 and below the water guiding box 3, and a plurality of draining holes are arranged on the draining plate 73.

The double-layer spraying mechanism a of the embodiment further comprises an impeller assembly 2 and a space guide impeller 4, the inside of the first spraying arm 1 is hollow to form a water collecting cavity 11, a first water inlet 12 for water to enter the water collecting cavity 11 is formed in the lower wall surface of the first spraying arm 1, and the impeller assembly 2 can be rotatably arranged below the first spraying arm 1 and used for pumping water into the water collecting cavity 11 of the first spraying arm 1. The water guide box 3 is provided with an upper cavity 31 and a lower cavity 32 which are communicated up and down, the bottom of the lower cavity 32 is provided with a second water inlet 321, the top of the upper cavity 31 is provided with a first water outlet 311 communicated with the first water inlet 12 of the first spray arm 1, the upper part of the impeller component 2 is rotatably arranged at the lower parts of the lower cavity 32 and the upper cavity 31, the space guide impeller 4 is arranged in the upper cavity 31 and used for guiding the water in the lower cavity 32 upwards, and the side part of the lower cavity 32 is provided with a second water outlet 322 which is used for outputting the water and communicated with the liquid inlet end of the water guide pipeline 35. The impeller component 2 is used for pumping water into the water guide box 3 and providing power for pumping water into the first spray arm 1 and directly pumping water out from the side part of the water guide box 3, and the side part of the water guide box 3 is connected with the second spray arm 2 through the water guide pipeline 35, so that the water pumping mechanism can realize double-layer spraying of an upper layer and a lower layer, the spraying range is expanded, the cleaning dead angle is favorably eliminated, and the cleaning effect is improved; the space guide impeller 4 guides water pumped into the first spray arm 1, so that energy loss in water flow ascending can be reduced, and large stable water flow of an upper layer is kept.

Specifically, the inner diameter of the upper cavity 31 is larger than that of the lower cavity 32 so as to form a mounting saddle 33 at the joint of the two, and the space guide wheel 4 is constrained on the mounting saddle 33. The space guide vane wheel 4 is in a disc shape, a liquid guide channel 40 spirally extending along the radial direction is formed near the edge, the water inlet end 401 of the liquid guide channel 40 is communicated with the lower cavity 32, and the liquid outlet end 402 of the liquid guide channel 40 is communicated with the upper cavity 31 above the liquid guide channel. The water flowing out of the second water outlet 322 is pumped out from the lower cavity 32 through the impeller assembly 2, the impeller assembly 2 pumps water upwards at the same time, and the upward water flow easily collides with each other in the upper cavity 31 to cause energy loss, and the spatial guide impeller 4 is arranged to guide the water in the lower cavity 32 upwards and convey the water through a specific spiral flow channel, so that the energy loss of the upward water flow is reduced, and the flow rate and the flow velocity of the water sprayed by the first spray arm 1 are maintained.

The impeller assembly 2 includes a centrifugal impeller 21 located at an upper portion and an axial-flow impeller 22 located at a lower portion, a main body portion of the centrifugal impeller 21 is located in the lower cavity 32, and an upper portion of the centrifugal impeller 21 extends into a lower portion of the upper cavity 31. The space guide impeller 4 is arranged around the upper periphery of the centrifugal impeller 21, and the liquid guide channel 40 is arranged on the upper periphery of the centrifugal impeller 21 and has the same spiral direction as the rotation direction of the centrifugal impeller 21. The axial-flow impeller 22 is used for pumping water flow upwards into the water guiding box 3, the main body part of the centrifugal impeller 21 is mainly used for pumping out water in the lower cavity 32 through the second water outlet 322, and the upper part of the centrifugal impeller 21 is mainly used for radially entering the water entering the upper cavity 31 from the lower cavity 32 into the liquid guiding channel 40 and further guiding the water upwards so as to work more water flow and keep larger flow rate and flow velocity of the water flow.

In this embodiment, the upper wall surface of the space guide impeller 4 is provided with a plurality of first blades 41 which are opposite to the spiral direction of the liquid guide channel 40 and used for gathering water to the middle, the first blades 41 are arranged on the upper wall surface of the space guide impeller 4 at intervals along the circumferential direction, the top edge of the first blades 41 is connected with the inner top wall of the upper cavity 31, and the inner end of the first blades 41 is aligned with the edge of the first water outlet 311 above the first blades or arranged corresponding to the inner side of the first water outlet 311. Above-mentioned structure can assemble the water that drain passage 40 flows to the centre, and water is in the first spray arm 1 of first water inlet 12 through first spray arm 1 again after assembling with spiral entering, not only can further reduce the energy loss in the rivers transportation process, and rivers spiral motion's power still is favorable to driving first spray arm 1 rotatory through rivers viscous force moreover.

The first water inlet 12 of the first spray arm 1 is connected with the first water outlet 311 of the water guide box 3 through the first water guide pipe 34 on the water guide box 3, the inner diameter of the lower portion 341 of the first water guide pipe 34 is gradually increased from top to bottom, the lower edge of the lower portion of the first water guide pipe is arranged corresponding to the middle of the first blade 41, and the first blade 41 is gradually downwards formed into the sequentially reduced water guide step 411 from the joint of the first blade 41 and the first water outlet 311 in the vertical direction. The central portion of the upper wall surface of the spatial guide vane wheel 4 extends inwards and upwards gradually from the outer edge of the water guide step 411 to form an arc-shaped guide surface 412, and the inner edge of the guide surface 412 is located inside the inner edge of the water guide step 411. The structure is beneficial to improving the centralized guide effect on the water flow on the upper part of the upper cavity body 31, and further reduces the energy loss. In order to facilitate the rotatable connection of the first spray arm 1 to the top of the water guide box 3, the lower wall surface of the first spray arm 1 is provided with a water guide sleeve 14 extending downward around the first water inlet 12, and the water guide sleeve 14 is rotatably inserted into the first water guide pipe 34. A mounting table 342 for supporting the lower end of the water guide sleeve 14 is formed in the first water guide pipe 34 near the lower portion, and a rotary bearing 141 is provided between the outer circumferential wall of the water guide sleeve 14 and the inner circumferential wall of the first water guide pipe 34.

In the present embodiment, the spatial guide vane wheel 4 has a top plate 43 and second vanes 42 spirally extending from the outer edge of the bottom wall of the top plate 43 in the circumferential direction, and the liquid guide channel 40 is formed between two adjacent second vanes 42. A sealing sheet 44 capable of sealing the top of the liquid guide channel 40 is connected between the top edge of the second blade 42 and the outer edge of the top plate 43, the sealing sheet 44, the lower wall surface of the top plate 43 and each second blade 42 together enclose an accommodating cavity 45 positioned at the central part, and the upper part of the centrifugal impeller 21 is positioned in the accommodating cavity 45. The accommodating cavity 45 and the sealing sheet 44 are arranged to seal the top of the liquid guide channel 40, which is beneficial to reducing the energy loss of water in the conveying process.

In order to limit the space guide vane wheel 4, a limiting portion 312 that is engaged with an outer edge of the second vane 42 to limit the second vane 42 in the circumferential direction is provided on an inner circumferential wall of the upper chamber body 31. In order to facilitate production, assembly and subsequent cleaning, the water guide box 3 comprises an upper shell 3a and a lower shell 3b which are connected in a detachable mode, an upper cavity 31 is formed in the upper shell 3a in a hollow mode and provided with an opening at the bottom, a lower cavity 32 is formed in the lower shell 3b in a middle hole and provided with an opening at the top, the edge of the opening at the top of the lower shell 3b extends outwards to form the installation supporting platform 33, and the lower edge of the upper shell 3a abuts against the edge, close to the outer edge, of the installation supporting platform 33. The outer edge of the mounting bracket 33 extends upward to form a mounting sleeve 331 capable of being sleeved on the outer periphery of the upper housing 3a, and the top edge of the mounting sleeve 331 is provided with a buckle 332 extending upward and capable of being clamped on the top edge of the upper housing 3 a.

In this embodiment, the centrifugal impeller 21 includes a shaft 211 in the middle and centrifugal blades 212 arranged at intervals in the radial direction on the outer periphery of the shaft 211, and a gap 210 penetrating in the axial direction so that water passes through from bottom to top is formed between adjacent two centrifugal blades 212. The upper part 2121 of the centrifugal blade 212 is located above the shaft 211, and the lower part 2122 of the centrifugal blade 21 is arranged corresponding to the outer circumference of the shaft 211. The outer peripheral wall of the shaft 211 is formed with a first arc-shaped guide surface 213 which gradually extends outward in the radial direction from the bottom to the top, and the middle of the centrifugal vane 212 is connected to the upper end of the first arc-shaped guide surface 213. The structure is beneficial to guiding water from bottom to top and dispersing water along the radial direction, and is beneficial to pumping water out from the second water outlet 322.

The top edge of the shaft 211 extends along the arc of the first arc-shaped guide surface 213 to form guide vanes 214 respectively clamped on the two side walls of the centrifugal blade 212, and the outer ends of the guide vanes 214 are arranged corresponding to the top edge of the lower cavity 32. This configuration facilitates the water to be guided to the lower portion of the upper chamber 31 and to the input end of the liquid guide passage 40, which facilitates the reduction of energy loss.

The inner edge of the upper part of the centrifugal vane 212 is gradually curved from bottom to top along the radial direction to form a cambered surface 215 which is concave relative to the lower part, and a concave area 216 is formed between the upper part 2121 of the centrifugal vane 212, the top wall of the guide vane 214 and the top of the shaft 211. During the rotation of the centrifugal impeller, negative pressure is formed at the depressed area 216, which is beneficial to sucking up the water in the lower cavity 32 and improving the water pumping effect.

The bottom of the water guiding box 3 is provided with a flow guiding sleeve 61 extending downwards from the edge of the second water inlet 322, the axial flow impeller 22 is arranged in the flow guiding sleeve 61, a driving part 23 is arranged below the flow guiding sleeve 61, the driving part 23 is a motor, the motor is arranged on the outer bottom wall of the box body 7, and an output shaft 231 extends upwards and is sequentially connected with the axial flow impeller 22 and the centrifugal impeller 21. When the water-saving water pump is used, the water level is near the lower port of the guide sleeve 61, and the motor drives the axial-flow impeller 22 and the centrifugal impeller 21 to rotate, so that water is drawn upwards from bottom to top. The bottom of the water guide box 3 is supported on the inner bottom wall of the box body 7 through the water guide seat 6, and the water guide sleeve 61 is arranged in the water guide seat 6.

Claims

1. The utility model provides a cabinet type cleaning machine, includes box (7) and double-deck spray mechanism (a), the inside cavity of box (7) forms washing chamber (71), double-deck spray arm mechanism (a) is located box (7) bottom and is used for pumping up the water of box (7) bottom, its characterized in that: double-deck spray mechanism (a) includes first spray arm (1), second spray arm (5), leads water box (3) and leads water pipe (35), first spray arm (1) is close to the bottom of washing chamber (71) and arranges, second spray arm (5) are located first spray arm (1) top, it leads water box (3) and connects in first spray arm (1) below and is used for upwards guiding the water of washing chamber (71) bottom, it connects between water box (3) lateral part and second spray arm (5) to lead water pipe (35), and this water pipe (35) press close to box (7) inner wall and arrange.

2. The cabinet cleaning machine of claim 1, wherein: the bottom of the box body (7) is provided with a concave draining area (72), the water guide box (3) is arranged in the draining area (72) and supported on the bottom wall of the box body (7) through the water guide seat (6), and the first spray arm (1) is arranged above the draining area (72).

3. The cabinet washer according to claim 2, wherein: the peripheral wall of the draining area (72) is gradually inclined outwards from bottom to top to form a liquid guide surface (721), the lower part (351) of the water guide pipeline (35) is arranged close to the liquid guide surface (721), the middle part (352) of the water guide pipeline (35) is arranged close to the inner side wall of the box body (7), the upper part (353) of the water guide pipeline (35) is transversely arranged in the washing cavity (71), and the liquid outlet end of the water guide pipeline is connected with the second spray arm (5).

4. The cabinet washer according to claim 2, wherein: a draining plate (73) is transversely arranged at the lower part of the draining area (72), and the draining plate (73) is positioned above the flow guide seat (6) and below the water guide box (3).

5. The cabinet-type cleaning machine of any one of claims 1-4, wherein: the double-layer spraying mechanism further comprises an impeller assembly (2) and a space guide impeller (4), a water collecting cavity (11) is formed in the first spraying arm (1) in a hollow mode, a first water inlet (12) for supplying water into the water collecting cavity (11) is formed in the lower wall surface of the first spraying arm (1), the impeller assembly (2) can be rotatably arranged below the first spraying arm (1) and used for pumping water into the water collecting cavity (11) of the first spraying arm (1), the water guide box (3) is provided with an upper cavity (31) and a lower cavity (32) which are communicated up and down, the bottom of the lower cavity (32) is provided with a second water inlet (321), the top of the upper cavity (31) is provided with a first water outlet (311) communicated with the first water inlet (12) of the first spraying arm (1), and the upper portion of the impeller assembly (2) can be rotatably arranged on the lower portions of the lower cavity (32) and the upper cavity (31), the space guide impeller (4) is arranged in the upper cavity (31) and is used for guiding water in the lower cavity (32) upwards, and a second water outlet (322) which is used for outputting water and is communicated with the liquid inlet end of the water guide pipeline is formed in the side part of the lower cavity (32).

6. The cabinet washer according to claim 5, wherein: the inner diameter of the upper cavity (31) is larger than that of the lower cavity (32) so as to form an installation saddle (33) at the joint of the upper cavity and the lower cavity, the space guide impeller (4) is constrained on the installation saddle (33), a liquid guide channel (40) spirally extending along the radial direction is formed at the position, close to the edge, of the space guide impeller (4), the water inlet end (401) of the liquid guide channel (40) is communicated with the lower cavity (32), and the liquid outlet end (402) of the liquid guide channel (40) is communicated with the upper cavity (31) above the liquid guide channel.

7. The cabinet washer according to claim 6, wherein: the impeller assembly (2) comprises a centrifugal impeller (21) located on the upper portion and an axial-flow impeller (22) located on the lower portion, the main portion of the centrifugal impeller (21) is located in a lower cavity (32), and the upper portion of the centrifugal impeller (21) extends into the lower portion of an upper cavity (31).

8. The cabinet cleaning machine of claim 7, wherein: the space guide impeller (4) is arranged around the periphery of the upper part of the centrifugal impeller (21), the liquid guide channel (40) is positioned on the periphery of the upper part of the centrifugal impeller (21), and the spiral direction of the liquid guide channel is the same as the rotating direction of the centrifugal impeller (21).

9. The cabinet washer according to claim 6, wherein: the upper wall surface of the space guide impeller (4) is provided with a plurality of first blades (41) which are opposite to the spiral direction of the liquid guide channel (40) and used for gathering water to the middle, the first blades (41) are arranged on the upper wall surface of the space guide impeller (4) at intervals along the circumferential direction, the top edge of each first blade (41) is connected with the inner top wall of the upper cavity body (31), and the inner end of each first blade (41) is aligned with the edge of the first water outlet (12) above the first blade or is arranged corresponding to the inner side of the first water outlet (12).

10. The cabinet washer according to claim 6, wherein: the space guide impeller (4) is provided with a top plate (43) and second blades (42) spirally extending outwards along the circumferential direction from the outer edge of the bottom wall of the top plate (43), and the liquid guide channel (40) is formed between every two adjacent second blades (42); and a sealing sheet (44) capable of sealing the top of the liquid guide channel (40) is connected between the top edge of the second blade (42) and the outer edge of the top plate (43), the sealing sheet (44), the lower wall surface of the top plate (43) and each second blade (42) jointly enclose an accommodating cavity (45) positioned at the central part, and the upper part of the centrifugal impeller (21) is positioned in the accommodating cavity (45).