CN109973425B - Water pump impeller for cleaning machine and application thereof - Google Patents
Water pump impeller for cleaning machine and application thereof Download PDFInfo
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- CN109973425B CN109973425B CN201711460189.2A CN201711460189A CN109973425B CN 109973425 B CN109973425 B CN 109973425B CN 201711460189 A CN201711460189 A CN 201711460189A CN 109973425 B CN109973425 B CN 109973425B
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- impeller
- water pump
- central shaft
- blade
- water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/185—Rotors consisting of a plurality of wheels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2222—Construction and assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
Abstract
The invention relates to a water pump impeller for a cleaning machine, which comprises a second impeller and a first impeller, wherein the second impeller can disperse fluid at a first end along the radial direction, the first impeller can suck the fluid in the axial direction, the first impeller is arranged at a second end of the second impeller and is coaxially arranged with the second impeller, the first impeller comprises a first central shaft and first blades arranged on the outer peripheral surface of the first central shaft, the first blades spirally extend on the outer peripheral surface of the first central shaft along the axial direction, and the spiral number of turns of the first blades on the outer peripheral surface of the first central shaft is equal to one turn. Because the first impeller is axial, the relative flow velocity of water flow at the outer edge of the first impeller is the maximum, cavitation bubbles can be generated at the outer edge of the first impeller at first, when the water flow reaches the second impeller, liquid close to the central shaft of the second impeller compresses the cavitation bubbles at the outer edge under the action of centrifugal force, so that the liquid can only move close to the outer edge along the axial direction, and the cavitation bubbles collapse in a high-pressure area formed at the upper end of the second impeller, thereby greatly limiting the development of the cavitation bubbles, improving the flow and the lift of a pump, and further improving the cleaning effect.
Description
Technical Field
The invention relates to a water pump impeller for a cleaning machine and application thereof, in particular to a water pump impeller for a cleaning machine, which can be used in the cleaning machine for dishes, fruits, vegetables and the like to improve the cleaning effect.
Background
Before the water pump works, the water pump and the water inlet pipe must be filled with water, then the liquid obtains energy under the action of inertial centrifugal force by means of the impeller rotating at high speed, so that the internal pressure of the liquid can be increased, when the impeller rotates fast, the first blade promotes the water to rotate fast, the liquid flies out of the impeller under the action of the centrifugal force, after the water in the water pump is thrown out, the central part of the impeller forms a vacuum area, then the water in a water source enters the water inlet pipe under the action of atmospheric pressure (or water pressure), and continuous water pumping can be realized after circulation is inexhaustible. The water pump has the advantages of simple structure, easy operation, easy flow regulation, suitability for conveying various materials with special properties and the like, and is widely applied to various fields, such as various industrial places, and various household appliances, such as washing machines, dish washing machines, air conditioners and the like.
In a traditional water pump, an impeller is generally positioned in a closed cavity, so that the structure is complex, and the processing requirement is high. European patent publication EP0807396a2 discloses a dishwasher using an open water pump, which includes a washing chamber for receiving dishes, a spray arm supported at the bottom of the washing chamber, and a pump for pumping out washing liquid to pressurize the spray arm, the pump including an impeller having an inner surface defining a housing for the impeller to allow the washing liquid to be transferred from the housing to a nozzle of the spray arm, the impeller including a first blade bent forward at a lower edge, the bottom of the first blade having a first blade portion of axial flow, the first blade portion of axial flow lifting up the fluid after a start-up of a driving motor under no load, thereby allowing the pump to operate normally. However, in the impeller, the lower section of the first blade is short, the first blade needs to be at a high water level when the first blade draws water in a rotating manner, the water outlet channel is short, foam formed on the surface of the cleaning water such as cleaning solution and food residue is easily drawn into the impeller again, normal water drawing is affected, the amount of drawn water is small, and the flow speed is low, so that normal spraying operation of the rotary spray arm is affected.
In order to solve the above problems, chinese patent application No. CN104235061B, an open water pump (application No. CN201310750285.6), discloses a structure including an upper housing, a lower housing, and an impeller, where the impeller includes a central shaft and a plurality of axially extending first blades uniformly distributed on a circumferential surface of the shaft in a circumferential direction, the first blades are axially divided into an upper section and a lower section connected to each other, an upper housing cavity for housing the upper section of the first blades is formed in the upper housing, a lower housing cavity for housing the lower section of the first blades is formed in the lower housing, a water inlet of the water pump is located below and at a side surface of the lower housing, a water outlet is located at a side surface of the upper housing, at least a bottom of the lower section of the first blades is gradually and smoothly bent on the circumferential surface of the shaft in a rotation direction of the impeller, and a height ratio of the lower section to the upper section of the first blades is 1-5. The impeller can draw water at a low water level, is not easy to cause bubbles formed by cleaning solution or food residues on the water surface to be drawn into the impeller to influence the water drawing, and can draw enough flow from the water inlet. However, since the first blades for the axial pumping and the centrifugal dispersion are integrally formed and the first blade portion for the axial pumping is short, when cavitation bubbles carried in the liquid develop to a certain extent during the pumping, the characteristics of the outer edge of the first blade are affected to cause performance degradation, since the liquid in the flow passage of the centrifugal first blade flows from the axial direction to the radial direction and the density of the liquid is higher than that of the gas, the cavitation bubbles in the liquid are easily separated under the action of the centrifugal force and rapidly expand to block the flow passage, so that the suction performance of the pump is rapidly reduced, and further the flow rate of the discharged water is affected.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a water pump impeller for a cleaning machine, which can improve the flow and the lift by limiting the development of cavitation bubbles in liquid.
The technical scheme adopted by the invention for solving the technical problems is as follows: a water pump impeller for a washing machine, comprising a second impeller capable of radially dispersing a fluid at least at a first end, characterized in that: the fluid pumping device comprises a first impeller and a second impeller, wherein the first impeller can draw fluid in the axial direction, the first impeller is arranged at the second end of the second impeller and is coaxially arranged with the second impeller, the first impeller comprises a first central shaft and first blades arranged on the peripheral surface of the first central shaft, the first blades spirally extend along the axial direction on the peripheral surface of the first central shaft, and the number of spiral turns of the first blades on the peripheral surface of the first central shaft is equal to one.
Preferably, the first blade is a single piece. Or, the first blades are two.
Preferably, the first blades are distributed on the outer peripheral surface of the first central shaft in an equal diameter mode, and the diameter of each first blade is 25-40 mm, preferably 33 mm; or the first blades are distributed on the outer peripheral surface of the first central shaft in a variable diameter mode.
When the first blades are distributed on the outer peripheral surface of the first central shaft in a variable diameter mode, the diameters of the first blades are distributed in a size alternating mode in the spiral direction, the maximum diameter of each first blade is 32-40 mm, preferably 33mm, the minimum diameter of each first blade is 25-31 mm, preferably 30mm, each first blade is provided with a plurality of gradual change areas which are connected end to end, the minimum diameter of one gradual change area is connected with the minimum diameter of the other gradual change area, and the spiral length of the inner edge of each first blade of each gradual change area along the first central shaft is 0.9-1.5 times, preferably 1.1 times, of the length of the outer diameter of the first central shaft; or, according to the fluid flowing direction, the diameter of the first blade gradually increases from the upstream to the downstream on the outer peripheral surface of the first central shaft, the diameter of the starting end is 32-40 mm, preferably 33mm, and the diameter of the tail end is 25-31 mm, preferably 30 mm; or, the diameter of the first blade is gradually reduced from the upstream to the downstream on the outer peripheral surface of the first central shaft according to the flowing direction of the fluid, the diameter of the starting end is 25-31 mm, preferably 30mm, and the diameter of the tail end is 32-40 mm, preferably 33 mm.
Preferably, the first blades are distributed on the outer peripheral surface of the first central shaft in an equal thickness mode, and the thickness of the first blades is 1.3-2.0 mm, preferably 1.8 mm; alternatively, the thickness of the first blade is continuously changed along the axial direction of the first central shaft.
When the thickness of one blade is continuously changed along the axial direction of the first central shaft, according to the flow direction of the fluid, the thickness of the first blade is gradually reduced from the upstream to the downstream, the thickness of the starting end is 1.6-1.9 mm, preferably 1.8mm, and the thickness of the tail end is 1.3-1.5 mm, preferably 1.5 mm; or the thickness of the first blade gradually increases from upstream to downstream according to the flow direction of the fluid, and the thickness of the starting end is 1.3-1.5 mm, preferably 1.5 mm; the thickness of the tail end is 1.6-1.9 mm, and the optimal thickness is 1.8 mm; or according to the fluid flowing direction, the thicknesses of the first blades are distributed in an alternating size change from upstream to downstream, the maximum thickness of the first blades is 1.8mm, the minimum thickness of the first blades is 1.5mm, the first blades are provided with a plurality of evolution areas which are connected end to end, the minimum thickness end of one evolution area is connected with the minimum thickness end of the other evolution area, and the spiral length of the inner edge of the first blade of one evolution area along the first central shaft is 0.9-1.5 times, preferably 1.1 times, the length of the outer diameter of the first central shaft.
Preferably, according to the fluid flow direction, the starting end of the first blade is flush with the starting end surface of the first central shaft, and the tail end of the first blade is flush with the tail end surface of the first central shaft. Alternatively, the starting end of the first blade is located downstream of the starting end of the first central shaft, and the tip of the first blade is flush with the tip surface of the first central shaft, in terms of the fluid flow direction. Or, according to the fluid flowing direction, the starting end of the first blade is positioned at the downstream of the starting end of the first central shaft, and the tail end of the first blade is positioned at the upstream of the tail end of the first central shaft.
Preferably, the two first blades are arranged in a staggered spiral on the outer peripheral surface of the first central shaft.
Preferably, the first impeller further includes a cylindrically shaped shaft sleeve provided at an outer periphery of the first blade and coaxially arranged with the first central axis, and an outer edge of the first blade is connected to an inner circumferential wall of the shaft sleeve.
Preferably, the number of the first impellers is more than or equal to two, and the first impellers are connected end to end in the axial direction.
Preferably, the water pump impeller for the washing machine further comprises a driving mechanism capable of providing power for the rotation of the second impeller and the first impeller. The driving mechanism is a motor, and an output shaft of the motor is connected with central shafts of the second impeller and the first impeller.
The utility model provides an use spray arm that has above-mentioned water pump, includes the spray arm body, thereby this spray arm body inside cavity forms the water storage chamber, it has water inlet and apopore that are linked together with this water storage chamber to open on the spray arm body, its characterized in that: the water pump impeller for the cleaning machine is characterized by further comprising a water pump impeller for the cleaning machine, at least part of a second impeller in the water pump impeller for the cleaning machine penetrates through the water inlet to be located in the water storage cavity, and the first impeller is arranged on the upstream of the water inlet according to the flow direction of fluid.
The spray arm comprises a spray arm body and is characterized in that a water inlet of the spray arm body is provided with a flow guide sleeve, at least part of a first impeller is positioned in the flow guide sleeve, and the first impeller, a second impeller, the inner wall of the flow guide sleeve matched with the first impeller and the inner wall of a water storage cavity matched with the second impeller jointly form a water pump.
The utility model provides an use cleaning machine that has above-mentioned spray arm, includes the box and spray arm, the bottom half has local recessed portion at least so that form the waterlogging caused by excessive rainfall region, and the waterlogging caused by excessive rainfall board has been put to this waterlogging caused by excessive rainfall region top lid, spray arm can locate waterlogging caused by excessive rainfall board top, its characterized in that with rotating: the first impeller penetrates through the draining plate, the upper portion of the first impeller is located above the draining plate, and the lower portion of the first impeller is located below the draining plate.
The utility model provides an use cleaning machine that has above-mentioned water pump, includes the box that has the washing chamber, its characterized in that: the water pump impeller for the cleaning machine is provided with a pump shell arranged at the bottom of the box body, the top of the pump shell is provided with a containing cavity which can be connected with the mounting port and is used for collecting water, and the second impeller and the first impeller are arranged on one side of the containing cavity and are used for pumping water in the containing cavity into the box body through the mounting port.
Compared with the prior art, the invention has the advantages that: when the invention is used, because the first impeller is axial, the relative flow velocity of water flow at the outer edge of the first impeller is the maximum, cavitation bubbles can be generated at the outer edge of the first impeller at first, when the fluid reaches the second impeller, the liquid close to the central shaft of the second impeller compresses the cavitation bubbles at the outer edge under the action of centrifugal force, so that the fluid can only move close to the outer edge along the axial direction, and the cavitation bubbles collapse in a high-pressure area formed at the upper end of the second impeller, thereby greatly limiting the development of the cavitation bubbles, improving the cavitation erosion resistance of the second impeller, improving the flow and lift of a pump and further improving the cleaning effect.
Drawings
Fig. 1 is a partial structural schematic view of a water pump for a washing machine in embodiment 1 of the present invention;
fig. 2 is a first structural schematic diagram of a first impeller in embodiments 1, 2 and 6 of the present invention;
fig. 3 is a second structural schematic diagram of the first impeller in embodiments 1, 2 and 6 of the present invention;
fig. 4 is a schematic structural view of a first impeller in embodiment 18 of the present invention;
FIG. 5 is a schematic structural view of a first impeller in embodiment 19 of the present invention;
fig. 6 is a schematic structural view of a spray arm in embodiment 20 of the present invention;
FIG. 7 is a schematic view showing a structure of a cleaning machine in embodiment 21 of the present invention;
FIG. 8 is a schematic view showing another structure of a cleaning machine in embodiment 21 of the present invention;
fig. 9 is a schematic structural diagram of a cleaning machine in embodiment 22 of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Example 1:
as shown in fig. 1, the water pump impeller for a washing machine of the present embodiment includes a first impeller 1, a second impeller 2, and a driving mechanism 3, the first impeller 1 is disposed upstream of the second impeller 2 in terms of the fluid flow direction, and in the present embodiment, the first impeller 1 is disposed at one end of the second impeller 2 and is coaxially disposed with the second impeller 2 to rotate synchronously. The driving mechanism 3 of the present embodiment is a motor for providing power to rotate the second impeller 2 and the first impeller 1. An output shaft 31 of the motor is connected to the central shafts of the second impeller 2 and the first impeller 1. The first impeller 1 is used for drawing water flow in the axial direction, and the second impeller 2 has a certain flow guiding effect on the water flow drawn by the first impeller 1 and enables the fluid to be dispersed in the radial direction.
Specifically, the first impeller 1 includes a first central shaft 11 and a first blade 12 disposed on the outer peripheral surface of the first central shaft 11, the first blade 12 extends spirally in the axial direction on the outer peripheral surface of the first central shaft 11, and the number of spiral turns of the first blade 12 on the outer peripheral surface of the first central shaft 11 is equal to one.
The first blade 12 of the present embodiment is one piece or two pieces. When the first blade 12 is one piece, as shown in fig. 2, the first blade 12 is wound around the first central shaft 11 for a number of turns equal to one turn; when the first blades 12 are two pieces, as shown in fig. 3, the total number of turns of the first blades 12 on the first central shaft 11 is equal to one turn, and the number of turns of each first blade 12 on the first central shaft 11 is equal to one half turn.
According to the fluid flow direction, the starting end of the first blade 12 is flush with the starting end surface of the first center shaft 11, and the end of the first blade 12 is flush with the end surface of the first center shaft 11.
Example 2:
the present embodiment is different from the above embodiments only in that: as shown in fig. 2 and 3, the first blades 12 are distributed on the outer peripheral surface of the first central shaft 11 in an equal diameter, and the diameter of the first blades 12 is 25 to 40mm, and the optimal diameter is 33 mm.
Example 3:
this example differs from example 2 in that: the first blades 12 of this embodiment are distributed with a variable diameter on the outer peripheral surface of the first central shaft 11. The diameters of the first blades 12 are distributed in a size alternating manner in the spiral direction, the maximum diameter of the first blades 12 is 32-40 mm, preferably 33mm, and the minimum diameter of the first blades 12 is 25-31 mm, preferably 30 mm. The first blade 12 is provided with a plurality of gradual change areas which are connected end to end, the minimum diameter of one gradual change area is connected with the minimum diameter of the other gradual change area, and the spiral length of the inner edge of the first blade 12 of one gradual change area along the first central shaft 11 is 0.9-1.5 times, preferably 1.1 times of the length of the outer diameter of the first central shaft 11.
Example 4:
this example differs from example 2 in that: the diameter of the first blade 12 of this embodiment gradually increases from upstream to downstream on the outer peripheral surface of the first central shaft 11 according to the fluid flowing direction, the diameter of the starting end is 32 to 40mm, preferably 33mm, and the diameter of the end is 25 to 31mm, preferably 30 mm.
Example 5:
this example differs from example 2 in that: the diameter of the first blade 12 decreases gradually from upstream to downstream on the outer peripheral surface of the first central shaft 11 in the direction of fluid flow, with a diameter of 25 to 31mm, preferably 30mm, at the beginning and 32 to 40mm, preferably 33mm, at the end.
Example 6:
the present embodiment is different from the above embodiments in that: as shown in fig. 2 and 3, the first blades 12 are distributed on the outer peripheral surface of the first central shaft 11 in an equal thickness, and the first blades 12 have a thickness of 1.3 to 2.0mm, preferably 1.8 mm.
Example 7:
this example differs from example 6 in that: the thickness of the first blade 12 of this embodiment varies along the axial direction of the first central shaft 11. According to the fluid flowing direction, the thickness of the first blade 12 gradually decreases from the upstream to the downstream, the thickness of the starting end is 1.6 to 1.9mm, preferably 1.8mm, and the thickness of the tail end is 1.3 to 1.5mm, preferably 1.5 mm.
Example 8:
this example differs from example 6 in that: according to the fluid flowing direction, the thickness of the first blade 12 gradually increases from the upstream to the downstream, and the thickness of the starting end is 1.3-1.5 mm, preferably 1.5 mm; the thickness of the end is 1.6-1.9 mm, preferably 1.8 mm.
Example 9:
this example differs from example 6 in that: according to the fluid flow direction, the thickness of the first blade 12 is distributed from upstream to downstream in an alternating size change mode, the maximum thickness of the first blade 12 is 1.8mm, the minimum thickness of the first blade 12 is 1.5mm, the first blade 12 is provided with a plurality of evolution areas which are connected end to end, the minimum thickness end of one evolution area is connected with the minimum thickness end of the other evolution area, and the spiral length of the inner edge of the first blade 12 of one evolution area along the first central shaft 11 is 0.9-1.5 times, and the optimal spiral length is 1.1 times of the length of the outer diameter of the first central shaft 11.
Example 10:
the present embodiment is different from the above embodiments in that: the starting end of the first vane 12 is located downstream of the starting end of the first center shaft 11 in terms of the fluid flow direction, and the tip of the first vane 12 is flush with the tip end face of the first center shaft 11.
Example 11:
the present embodiment is different from the above embodiments in that: the starting end of the first vane 12 is located downstream of the starting end of the first central shaft 11 and the end of the first vane 12 is located upstream of the end of the first central shaft 11 in terms of the fluid flow direction.
Example 18:
the present embodiment is different from the above embodiments in that: as shown in fig. 4, the first impeller 1 of the present embodiment further includes a sleeve 13 formed in a cylindrical shape, the sleeve 13 being provided on the outer periphery of the first blade 12 and arranged coaxially with the first central shaft 11, and the outer edge of the first blade 12 being connected to the inner peripheral wall of the sleeve 13.
Example 19:
the present embodiment is different from the above embodiments in that: as shown in fig. 5, the number of the first impellers 1 is two or three, and the first impellers 11 are axially connected end to end. The first impeller 1 may include one first blade 12 or two first blades 12.
Example 20:
as shown in fig. 6, this embodiment shows a spray arm applied to any one of embodiments 1 to 19 for a water pump impeller of a cleaning machine, which includes a spray arm body 4, the spray arm body 4 is hollow to form a water storage cavity 41, the spray arm body 4 is provided with a water inlet 411 and a water outlet 412 communicated with the water storage cavity 41, an upper end of a second impeller 2 in the water pump impeller of the cleaning machine penetrates through the water inlet 411 and is located in the water storage cavity 41, and a first impeller 1 is located at an upstream of the water inlet according to a fluid flowing direction.
The second blades 22 of the second impeller 2 of the present embodiment are shaped as a fan-shaped structure with a central angle arranged outwards and a notch 120 at the central angle, and the notch 120 is arranged opposite to the edge of the water inlet 411.
A flow guide sleeve is arranged at the water inlet 411 of the spray arm body 4, at least part of the first impeller 1 is positioned in the flow guide sleeve, and the first impeller 1, the second impeller 2, the inner wall of the flow guide sleeve matched with the first impeller 1 and the inner wall of the water storage cavity 41 matched with the second impeller 2 jointly form a water pump.
Example 21:
as shown in fig. 7 and 8, this embodiment shows a cleaning machine to which the spray arm of embodiment 20 is applied, and the cleaning machine of this embodiment is a water tank type cleaning machine with an opening at the top, but of course, the cleaning machine can be designed to be a cleaning machine with an opening at the side wall as required. The cleaning machine comprises a box body (not shown) and a spray arm, wherein the box body is at least provided with a local concave part to form a draining area 51, a draining plate 52 is covered above the draining area 51, the spray arm is rotatably arranged above the draining plate 52, a first impeller 1 is arranged through the draining plate 52, the upper part of the first impeller 1 is positioned above the draining plate 52, and the lower part of the first impeller 1 is positioned below the draining plate 52.
The draining area 51 of the present embodiment may be formed as an elongated area gradually depressed from the center toward the periphery as shown in fig. 8, or the draining area 51 may be formed as a partially or entirely wide area by providing the shape of the bottom wall of the draining area 51 or the draining plate 52 as shown in fig. 7.
Example 22:
as shown in fig. 9, this embodiment shows a cleaning machine applied with the water pump in any one of embodiments 1 to 6, including a box 6 having a washing chamber 61, a mounting port 62 is opened at the bottom of the box 6, a water pump impeller for the cleaning machine has a pump housing 14 mounted at the bottom of the box 6, the top of the pump housing 14 has an accommodating chamber 141 connected with the mounting port 62 and used for collecting water, and a second impeller 2 and a first impeller 1 are disposed at one side of the accommodating chamber 141 and used for pumping water in the accommodating chamber 141 into the washing chamber 61 of the box 1 through the mounting port 62.
Claims (19)
1. A water pump impeller for a washing machine, comprising a second impeller capable of radially dispersing a fluid at least at a first end, characterized in that: the first impeller is arranged at the second end of the second impeller and is coaxially arranged with the second impeller, the first impeller comprises a first central shaft and first blades arranged on the outer peripheral surface of the first central shaft, the first blades spirally extend on the outer peripheral surface of the first central shaft along the axial direction, and the number of spiral turns of the first blades on the outer peripheral surface of the first central shaft is equal to one turn;
according to the fluid flowing direction, the first impeller is arranged at the upstream of a water inlet of the water pump;
the first blades are distributed on the peripheral surface of the first central shaft in a diameter-variable manner;
the thickness of the first blade continuously changes along the axial direction of the first central shaft;
the first impeller further comprises a cylindrical shaft sleeve, the shaft sleeve is arranged on the periphery of the first blade and is coaxial with the first central shaft, and the outer edge of the first blade is connected with the inner peripheral wall of the shaft sleeve.
2. The water pump impeller for a washing machine as claimed in claim 1, characterized in that: the first blade is one piece.
3. The water pump impeller for a washing machine as claimed in claim 1, characterized in that: the first blades are two.
4. The water pump impeller for a washing machine as claimed in claim 1, characterized in that: the diameters of the first blades are distributed in a size alternating mode in the spiral direction.
5. The water pump impeller for a washing machine as claimed in claim 1, characterized in that: the first vane diameter gradually increases from upstream to downstream on the outer peripheral surface of the first center shaft in the fluid flow direction.
6. The water pump impeller for a washing machine as claimed in claim 1, characterized in that: the first vane diameter is gradually reduced from upstream to downstream on the outer peripheral surface of the first center shaft in the fluid flow direction.
7. The water pump impeller for a washing machine as claimed in claim 1, characterized in that: the first vane thickness gradually decreases from upstream to downstream in the direction of fluid flow.
8. The water pump impeller for a washing machine as claimed in claim 1, characterized in that: the first vane has a thickness that gradually increases from upstream to downstream in the direction of fluid flow.
9. The water pump impeller for a washing machine as claimed in claim 1, characterized in that: the thickness of the first blade is distributed from upstream to downstream in an alternating size distribution according to the flow direction of the fluid.
10. The water pump impeller for a washing machine as claimed in claim 1, characterized in that: according to the fluid flowing direction, the starting end of the first blade is flush with the starting end surface of the first central shaft, and the tail end of the first blade is flush with the tail end surface of the first central shaft.
11. The water pump impeller for a washing machine as claimed in claim 1, characterized in that: the starting end of the first blade is located downstream of the starting end of the first center shaft in terms of the fluid flow direction, and the tip end of the first blade is flush with the tip end face of the first center shaft.
12. A water pump impeller for a washing machine according to claim 1, 2 or 3, characterized in that: the starting end of the first blade is located downstream of the starting end of the first central shaft and the terminal end of the first blade is located upstream of the terminal end of the first central shaft in terms of the fluid flow direction.
13. The water pump impeller for a washing machine as claimed in claim 3, characterized in that: the two first blades are arranged in a staggered spiral manner on the outer peripheral surface of the first central shaft.
14. A water pump impeller for a washing machine according to claim 1, 2 or 3, characterized in that: the number of the first impellers is more than or equal to two, and the first impellers are connected end to end in the axial direction.
15. A water pump impeller for a washing machine according to claim 1, 2 or 3, characterized in that: and the second impeller and the first impeller are connected with a driving mechanism capable of providing power for the rotation of the second impeller and the first impeller.
16. A spray arm with the water pump impeller of any one of claims 1-15 applied thereto, comprising a spray arm body, wherein the spray arm body is hollow inside to form a water storage cavity, and the spray arm body is provided with a water inlet and a water outlet communicated with the water storage cavity, and the spray arm is characterized in that: the water pump impeller for the cleaning machine is characterized by further comprising a water pump impeller for the cleaning machine, at least part of a second impeller in the water pump impeller for the cleaning machine penetrates through the water inlet to be located in the water storage cavity, and the first impeller is arranged on the upstream of the water inlet according to the flow direction of fluid.
17. The spray arm of claim 16, wherein: the spray arm comprises a spray arm body and is characterized in that a water inlet of the spray arm body is provided with a flow guide sleeve, at least part of a first impeller is positioned in the flow guide sleeve, and the first impeller, a second impeller, the inner wall of the flow guide sleeve matched with the first impeller and the inner wall of a water storage cavity matched with the second impeller jointly form a water pump.
18. A cleaning machine using the spray arm of claim 16, comprising a box body and the spray arm, wherein the bottom of the box body is at least partially recessed to form a draining area, a draining plate is covered above the draining area, and the spray arm is rotatably arranged above the draining plate, and the cleaning machine is characterized in that: the first impeller penetrates through the draining plate, the upper portion of the first impeller is located above the draining plate, and the lower portion of the first impeller is located below the draining plate.
19. A cleaning machine with the water pump impeller of any one of claims 1-15 applied thereto, comprising a box body with a washing cavity, and is characterized in that: the water pump impeller for the cleaning machine is provided with a pump shell arranged at the bottom of the box body, the top of the pump shell is provided with a containing cavity which can be connected with the mounting port and is used for collecting water, and the second impeller and the first impeller are arranged on one side of the containing cavity and are used for pumping water in the containing cavity into the box body through the mounting port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711460189.2A CN109973425B (en) | 2017-12-28 | 2017-12-28 | Water pump impeller for cleaning machine and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711460189.2A CN109973425B (en) | 2017-12-28 | 2017-12-28 | Water pump impeller for cleaning machine and application thereof |
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| CN109973425B true CN109973425B (en) | 2021-04-16 |
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| CN202209282U (en) * | 2011-08-31 | 2012-05-02 | 重庆市星格水泵有限公司 | High-cavitation-resistance quick self sucking pump |
| EP2497404A1 (en) * | 2011-03-10 | 2012-09-12 | Bonferraro S.p.A. | Cleaning cycle for diswasher with device for recycling the rinse water |
| CN204511989U (en) * | 2014-12-31 | 2015-07-29 | 宁波方太厨具有限公司 | A kind of open water pump and application have the water tank cleaner of this open water pump |
| CN105485050A (en) * | 2015-12-22 | 2016-04-13 | 宁波市天马厨具有限公司 | Improved dish washer impeller and working principle thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7763119B2 (en) * | 2005-04-22 | 2010-07-27 | Steelkor, L.L.C. | Kitchenware washers and methods of manufacturing the same |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2497404A1 (en) * | 2011-03-10 | 2012-09-12 | Bonferraro S.p.A. | Cleaning cycle for diswasher with device for recycling the rinse water |
| CN202209282U (en) * | 2011-08-31 | 2012-05-02 | 重庆市星格水泵有限公司 | High-cavitation-resistance quick self sucking pump |
| CN204511989U (en) * | 2014-12-31 | 2015-07-29 | 宁波方太厨具有限公司 | A kind of open water pump and application have the water tank cleaner of this open water pump |
| CN105485050A (en) * | 2015-12-22 | 2016-04-13 | 宁波市天马厨具有限公司 | Improved dish washer impeller and working principle thereof |
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| CN109973425A (en) | 2019-07-05 |
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