CN113317740B

CN113317740B - Impeller structure for double-layer spraying system and cleaning machine with same

Info

Publication number: CN113317740B
Application number: CN202010126604.6A
Authority: CN
Inventors: 施郑赞; 刁硕; 韩健健; 陆泽杰
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2023-03-14
Anticipated expiration: 2040-02-28
Also published as: CN113317740A

Abstract

The invention relates to an impeller structure for a double-layer spraying system and a cleaning machine applying the structure, wherein the impeller structure for the double-layer spraying system comprises an impeller sleeve, a first impeller, a second impeller and a third impeller, the first impeller is arranged in the impeller sleeve and is provided with an axial flow structure which extends along the axial direction of a water drawing channel and is used for drawing water flow from bottom to top, the second impeller is sleeved on the periphery of the impeller sleeve and is provided with a centrifugal structure which is used for conveying the water flow along the radial direction; the third impeller is sleeved on the periphery of the impeller sleeve and is provided with an axial flow structure for pumping water flow from bottom to top. When the water pump is used, the lower layer water flow is upwards sucked by the third impeller to keep corresponding water flow, and is circumferentially dispersed by the second impeller to ensure high water pressure; the upper layer draws water upwards through the water drawing channel of the first impeller and the impeller sleeve, so that larger water flow is kept, and double-layer spraying is realized. The cleaning machine with the impeller structure realizes double-layer spraying, is beneficial to eliminating cleaning dead angles and improves the cleaning effect.

Description

Impeller structure for double-layer spraying system and cleaning machine with same

Technical Field

The invention relates to an impeller structure for a double-layer spraying system and a cleaning machine applying the structure.

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 impeller 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 the prior art and provides an impeller structure capable of meeting the flow and pressure required by a double-layer spraying system, and the impeller structure can provide uniform water flow of an upper layer and a lower layer.

Another technical problem to be solved by the present invention is to provide a cleaning machine with the above impeller structure, which can effectively eliminate the cleaning dead angle and improve the cleaning effect.

The technical scheme adopted by the invention for solving at least one technical problem is as follows: the utility model provides an impeller structure for double-deck spraying system which characterized in that: comprises that

The impeller sleeve is vertically communicated to form a hollow water drawing channel;

the first impeller is arranged in the water drawing channel of the impeller sleeve and is provided with an axial flow structure which extends along the axial direction of the water drawing channel and is used for drawing water flow from bottom to top;

the second impeller is sleeved on the outer peripheral wall of the impeller sleeve, synchronously rotates along with the impeller sleeve and is provided with a centrifugal structure used for conveying water flow along the radial direction; and

and the third impeller is sleeved on the peripheral wall of the impeller sleeve, is positioned below the second impeller and is provided with an axial flow structure for pumping water flow from bottom to top.

Preferably, the first impeller comprises a shaft positioned in the center and a first axial flow blade spirally wound on the outer circumferential wall of the shaft along the axial direction, and the outer edge of the first axial flow blade is connected with the inner circumferential wall of the impeller sleeve so as to form a flow channel for spirally drawing water flow from bottom to top. When the first impeller rotates, the impeller sleeve is driven to rotate so as to drive the second impeller and the third impeller to rotate, water below the impeller structure can be upwards drawn by the third impeller and then is dispersed in the circumferential direction of the second impeller, and therefore large water flow and water pressure are provided for water flow at the lower layer; meanwhile, the water flow entering from the lower port of the impeller sleeve can be dredged upwards through the flow channel to keep larger water flow of the upper layer, and the bowls and dishes on the upper layer are generally placed with parts which are easy to clean, so that the structure of the invention only provides larger water flow for the upper layer through the first impeller without high requirement on water pressure.

Preferably, the third impeller includes a second axial flow vane spirally wound in a circumferential direction on an outer circumferential wall of the impeller sleeve, and the second axial flow vane has the same spiral direction as the first axial flow vane. The structure can ensure that the inner part and the outer part of the impeller sleeve keep the same direction of water flow drawing, and the upward water drawing effect is improved.

As an improvement, the second impeller comprises an end cover positioned at the top and centrifugal blades distributed on the lower wall surface of the end cover at intervals and arranged around the periphery of the impeller sleeve, the centrifugal blades comprise a first part and a second part which are mutually connected, the first part extends outwards from the outer edge of the impeller sleeve and extends in the direction opposite to the rotating direction of the centrifugal blades, and the second part extends from the outer edge of the first part to the edge of the end cover and extends in the same direction as the rotating direction of the centrifugal blades. The structure is beneficial to improving the work of water flow, increasing the flow speed of water outlet and providing large water pressure of the water flow meter for cleaning the lower layer.

Preferably, the projection length of the first part on the end cover is L1, and the projection length of the second part on the end cover is L2, L2= K (L1 + L2), and K = 0.3-0.6. The plane where the inner end of the first part and the axial lead of the impeller sleeve are positioned is a, and the space between the first part and the plane aThe acute angle is theta, and theta is more than or equal to 20 degrees and less than or equal to 40 degrees. The acute angle formed between the first part and the second part is

The edge of the first part close to the impeller sleeve is an arc-shaped edge arched towards the impeller sleeve, an included angle formed between the tangent line of the arc-shaped edge and the axial lead of the impeller sleeve is theta 1, and theta 1 is more than or equal to 30 degrees and less than or equal to 45 degrees. The structure is favorable for improving the water pumping efficiency.

Preferably, the end cap is recessed radially inwardly from the rim. The structure is favorable for forming negative pressure and improving the water pumping effect from bottom to top.

Preferably, the inner diameter of the lower port of the impeller sleeve is gradually enlarged from top to bottom to form a flow guide part. The structure is favorable for reducing the water inlet resistance of the lower port of the impeller sleeve and improving the water pumping effect.

The utility model provides an use cleaning machine that has above-mentioned impeller structure that is used for double-deck spraying system, includes box, first spray arm and driving piece, the inside cavity of box forms the washing chamber, the lower part in washing chamber, its characterized in that are located to first spray arm: the second spray arm is arranged in the washing cavity, supported above the first spray arm through a flow guide channel and communicated with the first spray arm through fluid; the lower wall of the first spray arm is provided with a water inlet, the top of the first spray arm is provided with a water outlet corresponding to the lower port of the diversion channel, the upper part of the impeller structure penetrates through the water inlet to extend into the first spray arm, the upper port of the impeller sleeve corresponds to the lower port of the diversion channel, the second impeller is positioned in the first spray arm, the lower part of the impeller structure and the third impeller thereon are positioned below the first spray arm, and the driving part is arranged at the bottom of the box body and the output end of the driving part penetrates through the bottom wall of the box body to be connected with the first impeller.

Compared with the prior art, the invention has the advantages that: the invention provides an impeller structure capable of meeting the water flow and water pressure of a double-layer spraying system, when the impeller structure is used, the water flow of the lower layer is upwards sucked by a third impeller to keep corresponding water flow, and is circumferentially dispersed by a second impeller to ensure high water pressure, so that the lower layer has high cleaning force; the upper layer draws water upwards through a water drawing channel of the first impeller and the impeller sleeve, and keeps larger water flow, thereby realizing double-layer spraying. The cleaning machine with the impeller structure realizes double-layer spraying, is beneficial to eliminating cleaning dead angles and improves the cleaning effect.

Drawings

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

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

FIG. 3 is a schematic structural view of the second impeller of FIG. 2;

FIG. 4 is a bottom view of FIG. 3;

fig. 5 is a schematic structural diagram of a cleaning machine according to an embodiment of the present invention.

Detailed Description

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

As shown in fig. 1 to 4, the impeller structure a for the double-layer spraying system of the present embodiment includes an impeller sleeve 4, a first impeller 1, a second impeller 2, and a third impeller 3. The impeller sleeve 4 is vertically communicated to form a hollow water drawing channel 41, the first impeller 1 is arranged in the water drawing channel 41 of the impeller sleeve 4 and is provided with an axial flow structure which extends along the axial direction of the water drawing channel 41 and is used for drawing water flow from bottom to top; the second impeller 2 is sleeved on the peripheral wall of the impeller sleeve 4 and synchronously rotates along with the impeller sleeve 4, and is provided with a centrifugal structure for conveying water flow along the radial direction; the third impeller 3 is sleeved on the peripheral wall of the impeller sleeve 4 and positioned below the second impeller 2, and has an axial flow structure for pumping water flow from bottom to top.

Specifically, the first impeller 1 includes a central shaft 11 and first axial flow blades 12 spirally wound on an outer circumferential wall of the shaft 11 in an axial direction, and outer edges of the first axial flow blades 12 are connected to an inner circumferential wall of the impeller sleeve 4 to form a flow passage 40 through which water flows spirally from bottom to top. When the first impeller 1 rotates, the impeller sleeve 4 is driven to rotate so as to drive the second impeller 2 and the third impeller 3 to rotate, water below the impeller structure can be upwards drawn by the third impeller 3 and then is circumferentially dispersed by the second impeller 2, so that large water flow and water pressure are provided for water flow at the lower layer; meanwhile, the water flow entering through the lower port of the impeller sleeve 4 can be dredged upwards through the flow channel 40, so that the larger water flow of the upper layer is kept, and the bowls and dishes on the upper layer are generally placed with parts which are easy to clean, so that the structure of the embodiment only provides the larger water flow for the upper layer through the first impeller without high requirement on water pressure.

The third impeller 3 includes second axial flow vanes 31 spirally wound in the circumferential direction on the outer circumferential wall of the impeller sleeve 4, and the second axial flow vanes 31 are in the same spiral direction as the first axial flow vanes 12. The structure can ensure that the inner part and the outer part of the impeller sleeve 4 can suck water flow in the same direction, and the upward water sucking effect is improved.

In the present embodiment, the second impeller 2 includes an end cover 21 at the top and centrifugal blades 22 spaced apart from and distributed on the lower wall surface of the end cover 21 and arranged around the periphery of the impeller sleeve, the centrifugal blades 22 include a first portion 221 and a second portion 222 that are connected to each other, the first portion 221 extends outward from the outer edge of the impeller sleeve 4 and extends in a direction opposite to the rotation direction of the centrifugal blades 22, and the second portion 222 extends from the outer edge of the first portion 221 to the edge of the end cover 21 and extends in the same direction as the rotation direction of the centrifugal blades 22. The structure is beneficial to improving the work of water flow, increasing the flow speed of water outlet and providing large water pressure of the water flow meter for cleaning the lower layer. The projection length of the first portion 221 on the end cover 21 is L1, the projection length of the second portion 222 on the end cover 21 is L2, L2= K (L1 + L2), and K =0.3 to 0.6. The plane where the inner end of the first part 221 and the axis of the impeller sleeve 4 are located is a, the acute angle formed between the first part 221 and the plane a is theta, and theta is more than or equal to 20 degrees and less than or equal to 40 degrees. The acute angle formed between the first part 221 and the second part 222 is

Said first part 221 being close to the impeller sleeve 4The edge is an arc edge arched towards the impeller sleeve 4, and an included angle formed between the tangent line of the arc edge and the axial lead of the impeller sleeve 4 is theta 1, and theta 1 is more than or equal to 30 degrees and less than or equal to 45 degrees. The structure is favorable for improving the water pumping efficiency.

The upper wall surface of the end cover 21 of the embodiment is gradually sunken inwards from the edge along the radial direction, and the structure is favorable for forming negative pressure and improving the water pumping effect from bottom to top. The inner diameter of the lower port of the impeller sleeve 4 is gradually enlarged from top to bottom to form a flow guide part 42. This structure is favorable to reducing the resistance of intaking of impeller sleeve 4 lower port, improves the pump water effect.

As shown in fig. 5, the cleaning machine with the impeller structure for the double-layer spraying system in this embodiment includes a box 5, a first spray arm 6, a driving element 7, a second spray arm 8 and an impeller structure a, wherein a washing chamber 51 is formed in the box 5 in a hollow manner, a diversion seat 52 is disposed at the bottom of the washing chamber 51, and the first spray arm 6 is rotatably supported on the diversion seat 52. The first spray arm 6 has a water inlet 61 in the center of its lower wall and a plurality of spaced spray holes in its upper wall.

The second spray arm 8 is provided in the washing chamber 51 and supported above the first spray arm 6 through the guide passage 9, in fluid communication with the first spray arm 6. The guide channel 9 is vertically arranged above the first spray arm 6, a water outlet 62 correspondingly connected with a lower port of the guide channel 9 is formed in the central part of the upper wall surface of the first spray arm 6, the upper part of the impeller structure a penetrates through the water inlet 61 to extend into the first spray arm 6, the upper port of the impeller sleeve 4 corresponds to the lower port of the guide channel 9, namely, a gap for relative rotation of the impeller sleeve 4 and the inner wall surface of the first spray arm 6 is formed between the upper end edge of the impeller sleeve 4 and the inner wall surface of the first spray arm 6, but the gap is extremely small, and water in the impeller sleeve 4 is prevented from losing at the position and upwards entering the guide channel 9 as far as possible. The central part of the lower wall surface of the second spray arm 8 is provided with a water inlet 81 connected with the upper end opening of the flow guide channel 9, and the upper wall surface is provided with a plurality of water spray holes arranged at intervals.

The second impeller 2 is positioned in the first spray arm 6, the lower part of the impeller structure a and the third impeller 3 thereon are positioned below the first spray arm 6, the driving part 7 is a motor and is arranged at the bottom of the box body 5, and the output end 71 penetrates through the bottom wall of the box body 5 to be connected with the shaft 11 of the first impeller 1.

When the water-saving cleaning device is used, the driving piece 7 drives the first impeller 1 to rotate, so that the impeller sleeve 4, the second impeller 2 and the third impeller 3 are driven to integrally rotate, water flow in the lower layer is upwards sucked by the third impeller 3 to keep corresponding water flow, and is circumferentially dispersed by the second impeller 2 to ensure high water pressure, so that the lower layer has high cleaning force; the upper layer draws water upwards through the water drawing channel of the first impeller 1 and the impeller sleeve 4, so that larger water flow is kept, and double-layer spraying is realized.

Claims

1. The utility model provides an impeller structure for double-deck spraying system which characterized in that: comprises that

An impeller sleeve (4) which is vertically penetrated to form a hollow water drawing channel (41);

the first impeller (1) is arranged in the water drawing channel (41) of the impeller sleeve (4) and is provided with an axial flow structure which extends along the axial direction of the water drawing channel (41) and is used for drawing water flow from bottom to top;

the second impeller (2) is sleeved on the outer peripheral wall of the impeller sleeve (4), synchronously rotates along with the impeller sleeve (4), and is provided with a centrifugal structure for conveying water flow along the radial direction; and

the third impeller (3) is sleeved on the outer peripheral wall of the impeller sleeve (4), is positioned below the second impeller (2), and is provided with an axial flow structure for pumping water flow from bottom to top;

the first impeller (1) comprises a shaft (11) positioned in the center and a first axial flow blade (12) spirally wound on the outer peripheral wall of the shaft (11) along the axial direction, and the outer edge of the first axial flow blade (12) is connected with the inner peripheral wall of the impeller sleeve (4) so as to form a flow channel (40) for water flow to spirally draw from bottom to top;

when the water-saving cleaning device is used, the driving piece drives the first impeller (1) to rotate, so that the impeller sleeve (4), the second impeller (2) and the third impeller (3) are driven to integrally rotate, the lower-layer water flow is upwards drawn by the third impeller (3) to keep corresponding water flow, and is circumferentially dispersed by the second impeller (2), so that high water pressure is ensured, and the lower layer has high cleaning force; the upper layer draws water upwards through a water drawing channel of the first impeller (1) and the impeller sleeve (4), so that large water flow is kept, and double-layer spraying is realized.

2. The impeller structure for a double layer spray system of claim 1, wherein: the third impeller (3) comprises a second axial flow blade (31) spirally wound in the circumferential direction on the outer circumferential wall of the impeller sleeve (4), and the second axial flow blade (31) has the same spiral direction as the first axial flow blade (12).

3. The impeller structure for a double layer sprinkler system according to claim 1 or 2, wherein: the second impeller (2) comprises an end cover (21) positioned at the top and centrifugal blades (22) distributed on the lower wall surface of the end cover (21) at intervals and arranged around the periphery of the impeller sleeve (4), the centrifugal blades (22) comprise a first part (221) and a second part (222) which are mutually connected, the first part (221) extends outwards from the outer edge of the impeller sleeve (4) in the direction opposite to the rotating direction of the centrifugal blades (22), and the second part (222) extends from the outer edge of the first part (221) to the edge of the end cover in the direction same as the rotating direction of the centrifugal blades (22).

4. The impeller structure for a dual layer sprinkler system according to claim 3, wherein: the projection length of the first part (221) on the end cover (21) is L1, the projection length of the second part (222) on the end cover (21) is L2, L2= K (L1 + L2), and K =0.3 ~ 0.6.

5. The impeller structure for a double layer spray system of claim 3, wherein: the plane where the inner end of the first part (221) and the axial lead of the impeller sleeve (4) are located is a, the acute angle formed between the first part (221) and the plane a is theta, and theta is more than or equal to 20 degrees and less than or equal to 40 degrees; the acute angle formed between the first part (221) and the second part (222) is phi, and phi is more than or equal to 20 degrees and less than or equal to 40 degrees.

6. The impeller structure for a dual layer sprinkler system according to claim 3, wherein: the edge of the first part (221) close to the impeller sleeve (4) is an arc-shaped edge arched towards the impeller sleeve (4), an included angle formed between the tangent line of the arc-shaped edge and the axial lead of the impeller sleeve (4) is theta 1, and theta 1 is more than or equal to 30 degrees and less than or equal to 45 degrees.

7. The impeller structure for a dual layer sprinkler system according to claim 3, wherein: the end cover (21) is gradually recessed inwards from the edge along the radial direction.

8. The impeller structure for a double layer sprinkler system according to claim 1 or 2, wherein: the inner diameter of the lower port of the impeller sleeve (4) is gradually enlarged from top to bottom to form a flow guide part (42).

9. A cleaning machine with an impeller structure for a double-layer spraying system according to any one of claims 1 to 8, comprising a box body (5), a first spray arm (6) and a driving part (7), wherein the box body (5) is hollow to form a washing cavity (51), the first spray arm (6) is arranged at the lower part of the washing cavity (51), and the cleaning machine is characterized in that: the second spray arm (8) is arranged in the washing cavity (51), supported above the first spray arm (6) through a flow guide channel (9) and communicated with the first spray arm (6) in a fluid manner; the lower wall of first spray arm (6) is gone up to open and is had water inlet (61), top and open and have delivery port (62) corresponding with water conservancy diversion passageway lower port, the upper portion of impeller structure (a) is passed water inlet (61) and is stretched into in first spray arm (6) and the last port of impeller sleeve (4) is corresponding with the lower port of water conservancy diversion passageway (9), second impeller (2) are arranged in first spray arm (6), third impeller (3) on impeller structure (a) lower part and it are located first spray arm (6) below, box (5) bottom and output are located in driving piece (7) and the box (5) diapire is passed to the output and is connected with first impeller (1).