CN109996967A - Impeller and electrodynamic pump - Google Patents
Impeller and electrodynamic pump Download PDFInfo
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- CN109996967A CN109996967A CN201880004616.2A CN201880004616A CN109996967A CN 109996967 A CN109996967 A CN 109996967A CN 201880004616 A CN201880004616 A CN 201880004616A CN 109996967 A CN109996967 A CN 109996967A
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- cover plate
- blade
- impeller
- distance
- connecting portion
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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
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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
- F04D29/2216—Shape, geometry
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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
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2272—Rotors specially for centrifugal pumps with special measures for influencing flow or boundary layer
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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
- F04D29/24—Vanes
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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
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
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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
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
- F04D29/245—Geometry, shape for special effects
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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
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of impeller, including upper cover plate (42), lower cover plate (5) and multiple blades (41), blade (41) is located between upper cover plate (42) and lower cover plate (5), including pressure-bearing side and back pressure side, pressure-bearing side includes first (413), back pressure side includes second (414) and third portion (415), first (413) is convex surface, second (414) is concave surface, it is reference with first (413), second (414) can increase the excretion coefficient of blade (41), it can be conducive to improve the stability of the head curve of the centrifugal pump using this impeller to a certain extent and improve the efficiency of centrifugal pump；The whirlpool that third portion (415) can reduce impeller to a certain extent loses and improves the hydraulic efficiency of centrifugal pump.It further include a kind of electrodynamic pump for being provided with the impeller.
Description
This application claims on February 24th, 2017 submission Patent Office of the People's Republic of China, application No. is a kind of 201710101912.1, priority of the Chinese patent application of entitled " vehicle water pump impeller structure ", entire contents are hereby incorporated by reference in the application.
The present invention relates to the technical fields such as vehicle, and in particular to a kind of impeller and electrodynamic pump.
Now, centrifugal pump gradually develops to miniaturization, high energy efficiency direction, and in Centrifugal Pump Design, the design of impeller is the key that improve pump performance；In existing design, the overall dimensions of centrifugal pump are small, and the diameter corresponding to impeller is also smaller, and in this case, traditional blade is difficult to meet the high hydraulic efficiency requirement of the centrifugal pump under the small flow of low-specific-speed.
Therefore, it is necessary to be improved to existing technology, to solve the above technical problem.
Summary of the invention
The purpose of the present invention is to provide a kind of electrodynamic pump of this impeller of impeller and application, the hydraulic efficiency of the centrifugal pump using this impeller is can be improved in this impeller.
To achieve the above object, the present invention adopts the following technical scheme: a kind of impeller, including upper cover plate, lower cover plate and multiple blades, the blade is between the upper cover plate and the lower cover plate, the blade includes leaf head, blade afterbody, vane tip, root of blade, first side and the second side, first side and second side are set between the vane tip and the root of blade, it is characterized by: first side includes first, second side includes second and third portion, described second is arranged than the third portion close to impeller center, from the leaf head to the blade afterbody, described second is gradually increased to first distance, the third portion is gradually reduced to first distance.
A kind of impeller, including upper cover plate, lower cover plate and multiple blades, the blade is between the upper cover plate and the lower cover plate, the blade includes vane tip, root of blade, first side and the second side, first side and second side are set between the vane tip and the root of blade, first side includes first, second side includes second and third portion, described second is arranged than the third portion close to impeller middle spindle, described first is convex surface, described second is concave surface, the blade has circumferential thickness, the circumferential thickness includes first kind circumferential thickness and the second class circumferential thickness, the first kind circumferential thickness refer to positioned at described first and be second described between circumferential thickness, the second class circumferential thickness refers to positioned at described first and described The outer rim of circumferential thickness between third portion, first circumferential thickness from impeller center axial direction impeller is gradually increased, and the outer rim of second circumferential thickness from impeller center axial direction impeller is gradually reduced.
The invention also discloses a kind of electrodynamic pumps, including rotor assembly and stator module, the rotor assembly includes permanent magnet and impeller, the stator module includes coil and support portion, the coil is wound in the support portion, the coil can drive the permanent magnet rotating after being powered, the permanent magnet is able to drive the wheel rotation, and the impeller is above-mentioned impeller.
Impeller of the invention includes upper cover plate, lower cover plate and blade, blade includes leaf head, blade afterbody, vane tip, root of blade, first, second and third portion, from leaf head to blade afterbody, second to first distance is gradually increased, the excretion coefficient that blade can be increased in this way can be conducive to the stability of the head curve of the centrifugal pump of this impeller to a certain extent and improve the efficiency of the centrifugal pump using this impeller；Third portion to first distance is gradually reduced, and can be reduced whirlpool loss to a certain extent in this way, be improved the hydraulic efficiency of the electrodynamic pump using this impeller.
Fig. 1 is a kind of schematic perspective view of driven type centrifugal pump；
Fig. 2 be in Fig. 1 driven type centrifugal pump along the diagrammatic cross-section in the direction A-A；
Fig. 3 is the separate structure schematic diagram of rotor assembly in Fig. 2；
Fig. 4 is a schematic perspective view of upper cover plate component in Fig. 3；
Fig. 5 is a positive structure diagram of upper cover plate component in Fig. 3；
Fig. 6 is a present invention looks up structural representation of upper cover plate component in Fig. 5.
The present invention will be further explained below with reference to the attached drawings and specific examples:
Driven type centrifugal pump abbreviation electrodynamic pump, driven type centrifugal pump belongs to one kind of centrifugal pump, centrifugal pump further includes mechanical centrifugal pump, driven type centrifugal pump is rotated by rotor impeller, mechanical centrifugal pump is rotated by mechanical movement impeller, and the present invention is specifically described by taking driven type centrifugal pump as an example.
Fig. 1 is an a kind of schematic perspective view of driven type centrifugal pump 100, Fig. 2 is driven type centrifugal pump in Fig. 1 along the diagrammatic cross-section in the direction A-A, incorporated by reference to reference Fig. 1 and Fig. 2, driven type centrifugal pump 100 includes first shell 11, second shell 12, rotor assembly 2, stator module 3 and end cap 13, first shell 11 is connect with second shell 12, second shell 12 and end cap 13 connect, driven type centrifugal pump 100 includes accommodating chamber, the accommodating chamber includes first shell 11, the space that second shell 12 and end cap 13 are formed, rotor assembly 2 and stator module 3 are located at the accommodating chamber, stator module 3 includes coil and support portion, coil is wound in support portion, coil can drive the permanent magnet rotating set on rotor assembly 2 after being powered, permanent magnet is able to drive Wheel rotation.The above-mentioned common knowledge for belonging to this field for the description of 3 structure of stator module.In the present embodiment, for rotor assembly 2 in addition to including above-mentioned permanent magnet, rotor assembly 2 further includes that impeller 21 and rotor 22 can only include impeller for mechanical centrifugal pump rotor component, not include rotor certainly.
Please refer to Fig. 3 and Fig. 4, impeller 21 includes upper cover plate component 4 and lower cover plate 5, upper cover plate component 4 includes multiple blades 41 and upper cover plate 42, blade 41 is between upper cover plate 42 and lower cover plate 5, blade 41 and 42 integrated injection molding of upper cover plate shape, and blade 41 is welded and fixed with lower cover plate 5, as other embodiment, blade and lower cover plate are integrally formed or blade is between upper cover plate and lower cover plate.Impeller 21 further includes impeller middle spindle and paddle wheel plane, wherein impeller middle spindle refers to the central axis of upper cover plate, and paddle wheel plane refers in the face perpendicular to impeller middle spindle.
The equidistant circumference of multiple blades 41 is arranged in upper cover plate 42 or multiple blades 41 are uniformly distributed on upper cover plate 42, and each blade construction is all the same.According to the General Principle of Centrifugal Pump Design, impeller can be improved to the restriction ability of working media in the number for increasing blade 41, be conducive to improve hydraulic efficiency, but increasing by 41 numbers of blade can also make the circulation runner of working media between adjacent blades 41 narrow, actual internal area especially at impeller inlet reduces, to reduce hydraulic efficiency, or even cause cavitation；According to waterpower test result, when upper cover plate includes even number blade, be conducive to the dynamic balancing in rotor rotation process, the quantity of blade is 8 in the present embodiment, and required according to the size of impeller outer diameter and the first circumference, 8 blades can make channel size and impeller reach ideal state to the contained of working media.Certainly 4-8 blade can be set according to the whole lift and hydraulic efficiency of electric drive centrifugal pump on upper cover plate 42.For ease of description, pictorial symbolization is carried out on multiple blades.Blade 41 includes vane tip 411 and root of blade 412, leaf head a, blade afterbody b, blade 41 has the first side and the second side, wherein, first side and the second side are set between vane tip 411 and root of blade 412, root of blade 412 and 42 integrated injection molding of upper cover plate shape, when driven type centrifugal pump 100 works, the pressure that the first side is born is greater than the pressure of the second side receiving.First side includes first 413, and the second side includes second 414 and third portion 415, and second 414 than third portion 415 closer to impeller center, first 413 is convex surface, second 414 is concave surface, and as other embodiment, first 413, second 414 can be plane.From leaf head a to root of blade b, second 414 to the first 413 distance is gradually increased, herein, second 414 to the first 413 distance refers to the minimum value at a distance from the point on second 414 is between arbitrary point on first 413, from leaf head a to root of blade b, the distance that third portion is 415 to the first 413 is gradually reduced, and herein, the distance that third portion is 413 to the first 413 refers to the distance between arbitrary point minimum value on point in third portion 415 and first 413.Second 414 from leaf head a to root of blade b, second 414 to the first 413 distance is gradually increased, the excretion coefficient of blade can be increased, the stability of the head curve of driven type centrifugal pump can be conducive to a certain extent and improve the efficiency of driven type centrifugal pump；In not set third portion, when impeller 21 is rotated, back pressure side can generate the whirlpool loss formed by working media separation close to impeller outer edge region, this whirlpool loss can reduce the lift and efficiency of driven type centrifugal pump to a certain extent, therefore, back pressure side includes third portion 415, from leaf head a to root of blade b, the distance that 415 distance of third portion is first 413 is gradually reduced, third portion 415 can reduce whirlpool loss to a certain extent, correspondingly to a certain extent with respect to the lift and efficiency for improving electric drive centrifugal pump.
Blade 41 further includes first connecting portion 416, first connecting portion 416 connects second 414 and third portion 415, in the present embodiment, first 413, first connecting portion 416 be convex surface, also, first 413 is inconsistent with 416 protrusion directions of first connecting portion, second 414 with first connecting portion 416 is smooth is connected, third portion 415 with first connecting portion 416 is smooth is connected, second 414 is smooth excessively by first connecting portion 416 with third portion 415；Second 414 is concave surface, third portion 415 is plane, wherein, it is reference with first 413, second 414 distance first 413 distance is gradually increased by impeller center axial direction impeller outer edge, second 414 distance first 413 distance refers to herein, please refer to Fig. 7, there is the first point M on second 414, have and second the first tangent tangent line m at the first point M, there is the first vertical line n at the first point M, first vertical line n and the first tangent line m is perpendicular and intersection point is the first point M, first vertical line n with first 313 intersect and intersection point be the first intersection point N, the distance between first point M and the first intersection point N are known as second 414 distance first 413 at this point distance；The distance that 416 distance of first connecting portion is first 413 is similar with second distance first distance, i.e. in first connecting portion 416 there is any to be known as second point, at the second point there is tangent line to be known as the second tangent line, there is the second vertical line at second point, second vertical line is by second point and perpendicular with the second tangent line, second vertical line and second 413 have intersection point to be known as the second intersection point, and the distance between second point and the second intersection point are known as 416 distance of first connecting portion first 413 distance.The distance that 416 distance of first connecting portion is first 413 is greater than second 414 distance first 413 distance, distance of 416 distance of first connecting portion first 413 distance greater than second 414 distance first 413 refers to herein, at least there is some point in first connecting portion 416 and is known as the first arbitrary point, at least there is some point on second 414 and is known as the second arbitrary point, the maximum value for the distance that second first 413 away from 414 distance distance is second 414 distance first 413 at the second any point, 416 distance of first connecting portion first 413 distance is greater than second 415 distance first 413 at the second arbitrary point distance at the first arbitrary point.The distance that 415 distance of third portion is first 413 refers to, have in third portion and is a little known as thirdly, this thirdly locate have the third tangent line tangent with third portion, at thirdly place, there are also the third vertical lines perpendicular with third tangent line, third vertical line is by thirdly, there is intersection point to be known as third intersection point by third vertical line and first 413, and 415 distance of third portion first 413 distance is thirdly known as with the distance between third intersection point.The distance that 416 distance of first connecting portion is first 413 is greater than 415 distance of third portion first 413 distance, distance of 416 distance of first connecting portion first 413 distance greater than 415 distance of third portion first 413 refers to herein, at least there is some point in first connecting portion 416 and is known as third arbitrary point, at least there is some point in third portion 414 and is known as the 4th arbitrary point, the maximum value for the distance that the distance in first 413 away from 414 distance, third portion is 414 distance of third portion first 413 at the 4th arbitrary point, 416 distance of first connecting portion first 413 distance is greater than 415 distance of third portion first 413 at the 4th arbitrary point distance at third arbitrary point.Blade 41 further includes second connecting portion 417, second connecting portion 417 connects first 413 and third portion 415, second connecting portion 417 is connected with first 413, third portion 415 respectively, second connecting portion 417 is aligned setting with the outer rim of upper cover plate, second connecting portion 417 has circumferential thickness along the outer marginal circumference direction of upper cover plate, the circumferential thickness refers to the arc length that second connecting portion 417 is projected along impeller middle spindle to upper cover plate from lower cover plate, the circumferential thickness is theoretically greater than equal to 0.3mm, and circumferential thickness can be used more than or equal to 0.5mm in practical application.There is projection in third portion 415 to upper cover plate along impeller middle spindle from lower cover plate, third portion 415 includes boundary portion A, boundary portion A refer to third portion from lower cover plate along impeller middle spindle to the intersection of the projection of upper cover plate 4 and upper cover plate outer rim, impeller 21 includes the first limit portion, first limit portion refers to that third portion is from lower cover plate along impeller middle spindle to the intersection of the projection of upper cover plate and upper cover plate outer rim when 417 circumferential thickness of second connecting portion is 0.3mm；Impeller 21 further includes the second limit contribution, second limit contribution refer to second 414 extended surface from lower cover plate along impeller middle spindle to the intersection of the projection of upper cover plate and upper cover plate outer rim, second 414 extended surface refers to the face extended to impeller outer edge the case where not changing second bending degree；Boundary portion A is between the first limit portion and the second limit portion, and boundary portion A can be overlapped with the first limit portion, and boundary portion A is not overlapped with the second limit portion.
Certainly, as other embodiment, third portion can be curved surface, also, the bending direction in third portion is different from second bending direction, and specifically, second is concave surface, and second gradually increases from outer rim distance first distance of impeller center axial direction impeller；Third portion is convex surface, also, third portion is different from the direction that first protrudes, and third portion is gradually decreased from outer rim distance first distance of impeller center axial direction impeller；First connecting portion is convex surface, first connecting portion is identical as the direction that third portion is protruded, first connecting portion is smoothly connected with second, third portion, the distance that first connecting portion distance is first is greater than the distance of third portion distance first, the distance that first connecting portion distance first distance is greater than third portion distance first herein refers to that first connecting portion at least exists a bit, and first connecting portion distance first distance is greater than the maximum value of the distance of third portion distance first at this point；The distance that first connecting portion distance is first is greater than second distance first distance, herein, distance of the distance that first connecting portion distance is first greater than second distance first refers to, exist in first connecting portion a bit, at this point the maximum value of distance of first connecting portion distance first distance greater than second distance first.
As other embodiment, third portion is curved surface, also, the bending direction in third portion is identical as second bending direction, and specifically, second is concave surface, and second gradually increases from outer rim distance first distance of impeller center axial direction impeller；Third portion is concave surface, and third portion is gradually decreased from outer rim distance first distance of impeller center axial direction impeller；First connecting portion is convex surface, first connecting portion is smoothly connected with second, third portion, the distance that first connecting portion distance is first is greater than the distance of third portion distance first, the distance that first connecting portion distance first distance is greater than third portion distance first herein refers to that first connecting portion at least exists a bit, and first connecting portion distance first distance is greater than the maximum value of first distance of third portion distance at this point；The distance that first connecting portion distance is first is greater than second distance first distance, herein, distance of the distance that first connecting portion distance is first greater than second distance first refers to, exist in first connecting portion a bit, at this point the maximum value of distance of first connecting portion distance first distance greater than second distance first.
Please refer to Fig. 7, blade 41 has circumferential thickness h, circumferential thickness refers to that an impeller face and impeller middle spindle have intersection point, the intersection point is known as the first centre point O, it scatters the circle of different radii outward using the first centre point O as the center of circle and the circle intersects with first of blade 41 and second or first 413 and the intersection of third portion 415 of the circle and blade 4, positioned at first 413 and second 414, arc length between first 413 and third portion 415 is circumferential thickness, circumferential thickness includes first kind circumferential thickness h1 and the second class circumferential thickness h2, first kind circumferential thickness h1 refers to the circumferential thickness between first and second, second class circumferential thickness h2 refers to the circumferential thickness between first and third portion, first kind circumferential thickness h1 is axial from impeller center The outer rim of impeller is gradually increased, circumferential thickness h2's increases the excretion coefficient that can increase blade after far from impeller inlet, impeller blade is relatively thick, excretion coefficient is relatively large, the area of passage of impeller is opposite to be reduced, in this way, can be with the stability of relative increase driven type centrifugal pump lift curve and the opposite efficiency for improving electric drive centrifugal pump；The outer rim of second class circumferential thickness from impeller center axial direction impeller is gradually reduced.
Blade 41 is gradually increased from outer rim second 414 distance, first 413 distance of impeller center axial direction impeller, third portion 415 distance, first 413 distance are gradually increased, the problems such as such structure can generate deformation during blade shapes, the problems such as in order to reduce deformation, hollow portion 418 is arranged in blade 41, the hollow portion 418 is the blind hole extended to form from vane tip 411 to upper cover plate 42, the depth of the blind hole is less than or equal to the height of blade 41, the height of blade 41 refers to the distance between vane tip 411 and root of blade 412, being provided with for hollow portion 418 is conducive to keep 41 uniform wall thickness of blade, on the other hand, hollow portion 418 can also reduce the quality of blade 41.More specifically, 1.5 times of minimum range of the maximum distance that 416 distance of first connecting portion is first 413 more than or equal to second 414 distance first 413, hollow portion is arranged in blade 41, hollow portion 418 is the blind hole extended to form from vane tip 411 to upper cover plate 42, the depth of the blind hole is less than or equal to the height of blade 41, bit width is greater than 1mm in the blind hole, bit width refers to along impeller outer edge radial direction in blind hole, blind hole has bit positions, at the bit positions, distance along impeller outer edge circumferential direction blind hole with respect to both sides is greater than 1mm, hollow portion 418 is located at least between first connecting portion 416 and first 413, in Fig. 4-embodiment shown in fig. 6, the shape of hollow portion 418 and the cross sectional shape of blade are substantially similar, the section of blade refers to herein The section of blade is intercepted with the face parallel with paddle wheel plane.The outer rim of the relatively close impeller of hollow portion, hollow portion 418 are located at least between second connecting portion 416 and first 413, and hollow portion 418 can mitigate the quality of impeller to a certain extent and can reduce the deformation of the injection molded of blade.
Upper cover plate component 4 includes blade 41 and upper cover plate 42, and blade 41 and 42 integrated injection molding of upper cover plate shape, referring to FIG. 3, upper cover plate 42 is welded and fixed by blade 41 with lower cover plate 5.Lower cover plate 5 includes lower cover plate groove 51 and lower cover plate ontology 52, the equidistant circumference of lower cover plate groove 51 is arranged in lower cover plate ontology 52 or lower cover plate groove 51 is evenly distributed on lower cover plate ontology 52, the setting of vane tip 411 and lower cover plate groove 51, the number of lower cover plate groove 51 are corresponding in the number of blade 41.Lower cover plate groove 51 includes the first auxiliary section 511, the second auxiliary section 512, third auxiliary section 513 and the first connection auxiliary section 514, wherein the first auxiliary section 511 is convex surface, and the first auxiliary section 511 matches and shape is identical with first 411, blade；Second auxiliary section 512 is concave surface, and the second auxiliary section matches and shape is identical with second, blade；Third auxiliary section 513 is matched with blade third portion and shape is identical；First connection auxiliary section 514 connects the second auxiliary section 512 and third auxiliary section 513, and the first connection auxiliary section 514 is matched with first connecting portion 416 and shape is identical；The shape of lower cover plate groove 51 is identical as 411 shape of vane tip, and vane tip 411 is located at lower cover plate groove 51.
It is welded for the ease of blade 41 and lower cover plate 5, the first joint portion 419 is arranged in vane tip 411, and first engagement of the setting of lower cover plate groove 51 auxiliary section 515, the first joint portion 419 engages the welding of 515 phase of auxiliary section with first.Wherein, the first joint portion 419 protrudes from vane tip 411 and the first joint portion 419 is arranged close to first 413, blade, and the first joint portion 419 can be bent setting of postponing according to first 413 curved shape；Lower cover plate groove 51 includes lower cover plate groove floor 516, and several first engagements auxiliary section 515 protrusion is set to lower cover plate groove floor, and the first engagement auxiliary section 515 can circumferentially be set to lower cover plate groove floor.
It is welded for the ease of upper cover plate component 4 and lower cover plate 5, positioning column 4110 is arranged in vane tip 411, positioning column 4110 is than blade hollow portion 418 closer to impeller middle spindle, locating slot (being not shown on figure) is arranged in lower cover plate 5, positioning column 4110 is partially or entirely located in locating slot, and positioning column 4110 and locating slot play the role of positioning.
It should be understood that above embodiments are merely to illustrate the present invention and not limit the technical scheme described by the invention, such as to "inner", "outside" "vertical" isotropy defines, although this specification is referring to the above embodiments, the present invention has been described in detail, but, those skilled in the art should understand that, person of ordinary skill in the field still can be combined with each other the present invention, modification or equivalent replacement, and all do not depart from the technical solution and its improvement of the spirit and scope of the present invention, it should all cover in scope of the presently claimed invention.
Claims (10)
- A kind of impeller, including upper cover plate, lower cover plate and multiple blades, the blade is between the upper cover plate and the lower cover plate, the blade includes leaf head, blade afterbody, vane tip, root of blade, the first side and the second side, first side and second side are between the vane tip and the root of blade, it is characterized by: first side includes first, second side includes second and third portion, and described second is arranged than the third portion close to impeller center；From the leaf head to the blade afterbody, described second to first distance is gradually increased, and the third portion to first distance is gradually reduced.
- Impeller according to claim 1, it is characterized in that, the blade includes first connecting portion, first connecting portion connection second and the third portion, the first connecting portion are smoothly connected with described second, the third portion, and described first is convex surface, described second is concave surface, the third portion is plane, and the first connecting portion is convex surface, and the first connecting portion is greater than described second apart from first distance apart from first distance.
- Impeller according to claim 1, it is characterized in that, the blade includes first connecting portion, first connecting portion connection second and the third portion, the first connecting portion are smoothly connected with described second, the third portion, and described first is convex surface, described second is concave surface, the third portion is curved surface, and the bending direction in the third portion is different from second bending direction, and the first connecting portion and the third portion are convex surface；Or the blade includes first connecting portion, first connecting portion connection second and the third portion, the first connecting portion is smoothly connected with described second, the third portion, described first is convex surface, described second is concave surface, the third portion is curved surface, the bending direction in the third portion is identical as second bending direction, the first connecting portion is convex surface, and the first connecting portion is greater than described second apart from first distance apart from first distance.
- Impeller according to claim 2 or 3, which is characterized in that the blade includes second connecting portion, and the second connecting portion connects the third portion and first described, and the second connecting portion is aligned setting with the lower cover plate outer rim.
- Impeller as claimed in claim 4, the second connecting portion has circumferential thickness, there is projection in the third portion to upper cover plate along impeller middle spindle from lower cover plate, the third portion includes boundary portion, the boundary portion refers to projection and the intersection of the upper cover plate outer rim of the third portion from lower cover plate along the axial upper cover plate of impeller center, the impeller includes the first limit portion, first limit portion refers to when the second connecting portion circumferential thickness is 0.3mm, the third portion is from lower cover plate along the projection and the intersection of the upper cover plate outer rim of the axial upper cover plate of impeller center, the impeller includes the second limit portion, second limit portion refers to projection and the intersection of the upper cover plate outer rim of second extended surface from lower cover plate along the axial upper cover plate of impeller center, the boudary portion is in described Between first limit portion and second limit portion, the boundary portion can be overlapped with first limit portion, and the boundary portion is not overlapped with second limit portion.
- Impeller according to claim 1-5, which is characterized in that the blade includes hollow portion, and the hollow portion is the blind hole extended to form from the vane tip to the root of blade, and the blind hole depth is less than or equal to the height of the blade.
- Impeller according to claim 1-5, it is characterized in that, the first connecting portion is more than or equal to described second 1.5 times apart from first minimum range apart from first maximum distance, the blade includes hollow portion, the hollow portion is the blind hole extended to form from the vane tip to the root of blade, the depth of the blind hole is less than or equal to the height of blade, and bit width is greater than 1mm in the blind hole.
- Impeller according to claim 6 or 7, it is characterized in that, the upper cover plate and the blade integrated injection molding, the upper cover plate is welded and fixed by the blade and the lower cover plate, the vane tip is formed with positioning column, the lower cover plate includes lower cover plate groove, the vane tip is set to the lower cover plate groove, the lower cover plate groove number is corresponding with the blade number, the lower cover plate has locating slot, the positioning column is inserted into the locating slot, and the positioning column is arranged than the hollow portion close to the impeller middle spindle.
- A kind of impeller, including upper cover plate, lower cover plate and multiple blades, the blade is between the upper cover plate and the lower cover plate, the blade includes vane tip, root of blade, first side and the second side, first side and second side are set between the vane tip and the root of blade, it is characterized by: first side includes first, second side includes second and third portion, described second is arranged than the third portion close to impeller middle spindle, described first is convex surface, described second is concave surface, the blade has circumferential thickness, the circumferential thickness includes first kind circumferential thickness and the second class circumferential thickness, the first kind circumferential thickness refer to positioned at described first and be second described between circumferential thickness, the second class circumferential thickness refers to positioned at described The outer rim of circumferential thickness between one and the third portion, first circumferential thickness from impeller center axial direction impeller is gradually increased, and the outer rim of second circumferential thickness from impeller center axial direction impeller is gradually reduced.
- A kind of electrodynamic pump, including rotor assembly and stator module, the rotor assembly includes permanent magnet and impeller, the stator module includes coil and support portion, the coil is wound in the support portion, the coil can drive the permanent magnet rotating after being powered, the permanent magnet is able to drive the wheel rotation, and the impeller is the described in any item impellers of claim 1 to 9.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710101912.1A CN108506243A (en) | 2017-02-24 | 2017-02-24 | Impeller and centrifugal pump with the impeller |
| CN2017101019121 | 2017-02-24 | ||
| PCT/CN2018/076997 WO2018153350A1 (en) | 2017-02-24 | 2018-02-23 | Impeller and electric pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109996967A true CN109996967A (en) | 2019-07-09 |
Family
ID=63253334
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710101912.1A Pending CN108506243A (en) | 2017-02-24 | 2017-02-24 | Impeller and centrifugal pump with the impeller |
| CN201710498611.7A Pending CN108506244A (en) | 2017-02-24 | 2017-02-24 | Impeller and centrifugal pump with the impeller |
| CN201720798619.0U Active CN207961044U (en) | 2017-02-24 | 2017-07-04 | Impeller and centrifugal pump with the impeller |
| CN201880004616.2A Pending CN109996967A (en) | 2017-02-24 | 2018-02-23 | Impeller and electrodynamic pump |
Family Applications Before (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710101912.1A Pending CN108506243A (en) | 2017-02-24 | 2017-02-24 | Impeller and centrifugal pump with the impeller |
| CN201710498611.7A Pending CN108506244A (en) | 2017-02-24 | 2017-02-24 | Impeller and centrifugal pump with the impeller |
| CN201720798619.0U Active CN207961044U (en) | 2017-02-24 | 2017-07-04 | Impeller and centrifugal pump with the impeller |
Country Status (2)
| Country | Link |
|---|---|
| CN (4) | CN108506243A (en) |
| WO (1) | WO2018153350A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506244A (en) * | 2017-02-24 | 2018-09-07 | 杭州三花研究院有限公司 | Impeller and centrifugal pump with the impeller |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10359049B2 (en) * | 2017-10-27 | 2019-07-23 | Asia Vital Components Co., Ltd. | Impeller blades structure and rotor assembly using same |
| CN213808111U (en) * | 2020-08-27 | 2021-07-27 | 芜湖美的厨卫电器制造有限公司 | Impeller, water pump and water heater |
| CN115898939A (en) * | 2022-12-29 | 2023-04-04 | 芜湖美的智能厨电制造有限公司 | Impeller, supercharging device and gas water heater |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN207961044U (en) | 2018-10-12 |
| CN108506243A (en) | 2018-09-07 |
| WO2018153350A1 (en) | 2018-08-30 |
| CN108506244A (en) | 2018-09-07 |
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