CN108506243A - Impeller and centrifugal pump with the impeller - Google Patents
Impeller and centrifugal pump with the impeller Download PDFInfo
- Publication number
- CN108506243A CN108506243A CN201710101912.1A CN201710101912A CN108506243A CN 108506243 A CN108506243 A CN 108506243A CN 201710101912 A CN201710101912 A CN 201710101912A CN 108506243 A CN108506243 A CN 108506243A
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- China
- Prior art keywords
- impeller
- blade
- lower cover
- joint face
- upper cover
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Classifications
-
- 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
-
- 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
- F04D29/245—Geometry, shape for special effects
-
- 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
-
- 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 and the centrifugal pump with the impeller, impeller includes upper cover plate, lower cover and multiple blades, blade and upper cover plate be integrally formed or blade and lower cover it is integrally formed, blade is between upper cover plate and lower cover, blade includes pressure-bearing side and back pressure side, pressure-bearing side includes first side, back pressure side includes second side and third side, first side is convex surface, second side is concave surface, it is reference with first side, second side can increase the excretion coefficient of blade, the stability of the head curve of the centrifugal pump using this impeller can be increased to a certain extent and improve the efficiency of the centrifugal pump using this impeller；The whirlpool that third side can reduce impeller to a certain extent loses and improves the hydraulic efficiency of the centrifugal pump with this impeller.
Description
【Technical field】
The present invention relates to the technical fields such as vehicle, and in particular to a kind of impeller and the centrifugal pump with the impeller.
【Background technology】
Now, centrifugal pump gradually develops to miniaturization, high energy efficiency direction, and in Centrifugal Pump Design, the design of impeller is to carry
The key of height pump performance；In existing design, the overall dimensions of centrifugal pump are small, and the diameter for corresponding to impeller is also smaller, this
In the case of, traditional blade is difficult high lift and the requirement of high hydraulic efficiency for meeting 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.
【Invention content】
The purpose of the present invention is to provide a kind of centrifugal pump of this impeller of impeller and application, this impeller can improve application
The hydraulic efficiency of the centrifugal pump of this impeller.
To achieve the above object, the present invention adopts the following technical scheme that：A kind of impeller, including upper cover plate, lower cover and
Multiple blades, the blade and the upper cover plate be integrally formed or the blade and the lower cover it is integrally formed, the leaf
For piece between the upper cover plate and the lower cover, the blade includes vane tip, root of blade, the first side and
Two sides, first side and second side are set between the vane tip and the root of blade, and described
One side includes first side, and second side includes second side and third side, and the second side is than the third
Side is arranged close to impeller middle spindle, and the first side is convex surface, and the second side is concave surface；It is with the first side
Reference is gradually distance from the first side from second side described in the impeller center axially outer rim of the impeller, and described
Three sides move closer to the first side.
A kind of impeller, including upper cover plate, lower cover and multiple blades, the blade and the upper cover plate it is integrally formed or
Blade described in person and the lower cover are integrally formed, and the blade is between the upper cover plate and the lower cover, the leaf
Piece includes vane tip, root of blade, the first side and the second side, and first side and second side are arranged
Between the vane tip and the root of blade, first side includes first side, and second side includes the
Two side faces and third side, the second side are arranged than the third side close to impeller middle spindle, and the first side is
Convex surface, the second side be concave surface, the blade have circumferential thickness, the circumferential thickness include first kind circumferential thickness and
Second class circumferential thickness, the first kind circumferential thickness refer to the circumference between the first side and the second side
Thickness, the second class circumferential thickness refers to the circumferential thickness between the first side and the third side, described
The outer rim of first circumferential thickness from impeller center axial direction impeller gradually increases, and second circumferential thickness is from impeller center axial direction leaf
The outer rim of wheel is gradually reduced.
The invention also discloses a kind of centrifugal pump, the centrifugal pump includes impeller, and the impeller is above-mentioned impeller.
Compared with prior art, impeller of the invention includes upper cover plate, lower cover and blade, and blade includes blade top
Portion, root of blade, first side, second side and third side, second side are gradually distance from first side or positioned at the
Circumferential thickness between one side and second side gradually increases, and can increase the excretion coefficient of blade in this way, to a certain degree
On can increase centrifugal pump using this impeller head curve stability and improve the efficiency of the centrifugal pump using this impeller；
Third side moves closer to first side or the circumferential thickness between first side and third side is gradually reduced, in this way
Whirlpool loss can be reduced to a certain extent, improve the hydraulic efficiency of the centrifugal pump using this impeller.
【Description of the drawings】
Fig. 1 is a kind of dimensional structure diagram of driven type centrifugal pump；
Fig. 2 be in Fig. 1 driven type centrifugal pump along the diagrammatic cross-section in the directions A-A；
Fig. 3 is the separate structure schematic diagram of rotor assembly in Fig. 2；
Fig. 4 is a dimensional structure diagram 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.
【Specific implementation mode】
The invention will be further described in the following with reference to the drawings and specific embodiments：
Driven type centrifugal pump belongs to one kind of centrifugal pump, and centrifugal pump further includes mechanical centrifugal pump, driven type centrifugation
Pump is to move wheel rotation by rotor banding, and mechanical centrifugal pump is rotated by mechanical movement impeller, and the present invention is driven with electricity
It is specifically described for dynamic formula centrifugal pump.
Fig. 1 is an a kind of dimensional structure diagram of driven type centrifugal pump 100, and Fig. 2 is that driven type centrifuges in Fig. 1
The diagrammatic cross-section along the directions A-A is pumped, incorporated by reference to figure 1 and Fig. 2 is referred to, driven type centrifugal pump 100 includes first shell 11, the
Two shells 12, rotor assembly 2, stator module 3 and end cap 13, first shell 11 are connect with second shell 12, second shell 12
With end cap 13 connect, driven type centrifugal pump 100 include accommodating chamber, the accommodating chamber include first shell 11, second shell 12 with
And the space that end cap 13 is formed, rotor assembly 2 and stator module 3 are located at the accommodating chamber.In the present embodiment, rotor assembly 2
Including impeller 21 and rotor 22, certainly, impeller can be only included for mechanical centrifugal pump rotor component, not include rotor.
It please refers to Fig.3 and Fig. 4, impeller 21 includes upper cover plate component 4 and lower cover 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 5, and blade 41 is shaped with 42 integrated injection molding of upper cover plate, leaf
Piece 41 is welded and fixed with lower cover 5, and as other embodiment, blade and lower cover are integrally formed or blade is located at upper cover
Between plate and lower cover.Impeller 21 further includes impeller middle spindle and paddle wheel plane, wherein impeller middle spindle refers in upper cover plate
Mandrel, paddle wheel plane refer to perpendicular to the face of impeller middle spindle.
41 equidistant circumference of multiple blades is arranged in upper cover plate 42 or multiple blades 41 are uniformly distributed on upper cover plate 42, often
A blade construction all same.According to the General Principle of Centrifugal Pump Design, impeller can be improved to work by increasing the number of blade 41
The restriction ability of medium is conducive to improve hydraulic efficiency, but increasing by 41 numbers of blade can also make to work between adjacent blades 41
The circulation runner of medium narrows, and the actual internal area especially at impeller inlet reduces, and to reduce hydraulic efficiency, or even causes
Cavitation；According to waterpower test result, when upper cover plate includes even number blade, be conducive to the dynamic balancing in rotor rotation process, this
The quantity of blade is 8 in embodiment, and is required according to the size of impeller outer diameter and the first circumference, and 8 blades can make
Channel size and impeller reach ideal state to the contained of working media.Certainly it can be raised according to the entirety of electric drive centrifugal pump
4-8 blade is arranged on upper cover plate 42 for journey and hydraulic efficiency.For ease of description, pictorial symbolization is carried out on multiple blades.Leaf
Piece 41, which includes vane tip 411 and root of blade 412, blade 41, has the first side and the second side, wherein the first side and
Second side is set between vane tip 411 and root of blade 412, and root of blade 412 is shaped with 42 integrated injection molding of upper cover plate,
When driven type centrifugal pump 100 works, the pressure that the first side is born is greater than the pressure that the second side is born.First side
Including first side 413, the second side includes second side 414 and third side 415, and second side 414 is than third side 415
Closer to impeller middle spindle, first side 413 is convex surface, and second side 414 is concave surface.It is reference with first side 413, from leaf
It takes turns 21 centers and is gradually distance from first side 413 to the outer rim second side 414 of impeller, third side 415 moves closer to the first side
Face 413.The outer rim of second side 414 from impeller center axial direction impeller, which is gradually distance from first side 413, can increase the row of blade
Coefficient is squeezed, the stability of the head curve of driven type centrifugal pump can be increased to a certain extent and improves driven type centrifugation
The efficiency of pump；Third side be not set, and when impeller 21 is rotated, back pressure side will produce close to impeller outer edge region because of work
The whirlpool loss made medium separation and formed, this whirlpool loss can reduce raising for driven type centrifugal pump to a certain extent
Journey and efficiency, therefore, back pressure side include third side 415, and third side 415 can reduce whirlpool damage to a certain extent
It loses, correspondingly to a certain extent with respect to the lift and efficiency for improving electric drive centrifugal pump.
Blade 41 further includes the first joint face 416, and the first joint face 416 connects second side 414 and third side 415,
In the present embodiment, first side 413, the first joint face 416 are convex surface, also, first side 413 and the first joint face 416
Institute's protrusion direction is inconsistent, second side 414 with the first joint face 416 is smooth is connected, third side 415 and the first joint face
416 it is smooth be connected, second side 414 and third side 415 are smooth excessively by the first joint face 416；Second side 414 is
Concave surface, third side 415 are plane, wherein with first side 413 to refer to, second side 414 is apart from first side 413
Distance is gradually increased by impeller center axial direction impeller outer edge, and distance of the second side 414 apart from first side 413 refers to herein,
Referring to FIG. 6, there is the first point M in second side 414, there is the first tangent line m tangent with second side at the first point M,
Have the first vertical line n, the first vertical line n and the first tangent line m perpendicular at first point M and intersection point is the first point M, first hangs down
Straight line n intersects with first side 313 and intersection point is the first intersection point N, and the distance between the first point M and the first intersection point N are known as at this
Distance of the second side 414 apart from first side 413 at point；Distance and second of first joint face 416 apart from first side 413
The distance of lateral distance first side is similar, i.e. on the first joint face 416 there is any to be known as second point, has 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, which cuts by second point and with second
Line is perpendicular, and the second vertical line has intersection point to be known as the second intersection point, the distance between second point and the second intersection point with second side 413
Distance of referred to as the first joint face 416 apart from first side 413.Distance of first joint face 416 apart from first side 413 is more than
Distance of the second side 414 apart from first side 413, herein distance of first joint face 416 apart from first side 413 be more than the
Distance of the two side faces 414 apart from first side 413 refers at least being known as first in the presence of some point on the first joint face 416
Arbitrary point is at least known as the second arbitrary point in second side 414 in the presence of some point, at the second any point second side away from
414 distance apart from first side 413 is the maximum value of distance of the second side 414 apart from first side 413, arbitrary first
Point place's distance of first joint face 416 apart from first side 413 is more than second side 415 at the second arbitrary point apart from first side
413 distance.Distance of the third side 415 apart from first side 413 refers to having a little to be known as thirdly on third side,
Thirdly locate that there is the third tangent line tangent with third side at this, also has the third perpendicular with third tangent line at thirdly place
Vertical line, third vertical line is by thirdly, third vertical line with first side 413 there is intersection point to be known as third intersection point, third
The distance between point and third intersection point are known as distance of the third side 415 apart from first side 413.First joint face, 416 distance
The distance of first side 413 is more than distance of the third side 415 apart from first side 413, herein 416 distance of the first joint face the
The distance of one side 413 refers to more than distance of the third side 415 apart from first side 413, on the first joint face 416 at least
There are some points to be known as third arbitrary point, is at least known as the 4th arbitrary point in the presence of some point in third side 414, the 4th
Third side is distance of the third side 414 apart from first side 413 away from 414 distance apart from first side 413 at arbitrary point
Maximum value, distance of first joint face 416 apart from first side 413 is more than the at the 4th arbitrary point at third arbitrary point
Distance of three sides 415 apart from first side 413.
Blade 41 further includes the second joint face 417, and the second joint face 417 connects first side 413 and third side 415,
Second joint face 417 is connected with first side 413, third side 415 respectively, the outer rim of the second joint face 417 and upper cover plate
Alignment setting, the second joint face 417 have circumferential thickness along the outer marginal circumference direction of upper cover plate, which refers to the second company
The arc length that junction 417 is projected along impeller middle spindle to upper cover plate from lower cover, which, which is theoretically greater than, is equal to
0.3mm, circumferential thickness can be used more than or equal to 0.5mm in practical application.Third side 415 is from lower cover along impeller center axial direction
Upper cover plate has a projection, and third side 415 includes boundary portion A, boundary portion A refer to third side from lower cover along impeller middle spindle
To the intersection of the projection and upper cover plate outer rim of upper cover plate 4, impeller 21 includes the first limit portion, which refers to working as
Second joint face, 417 circumferential thickness is 0.3mm, and third side is from lower cover along impeller middle spindle to the projection of upper cover plate and upper cover
The intersection of plate outer rim；Impeller 21 further includes the second limit contribution, which refers to the extension of second side 414
Face is from lower cover along impeller middle spindle to the intersection of the projection of upper cover plate and upper cover plate outer rim, the extension of second side 414
Face refers to the face extended to impeller outer edge the case where not changing second side bending degree；Boundary portion A be located at the first limit portion and
Between second limit portion, boundary portion A can be overlapped with the first limit portion, and boundary portion A and the second limit portion are misaligned.
Certainly, as other embodiment, third side can be curved surface, also, the bending direction of third side and second
The bending direction of side is different, and specifically, second side is concave surface, outer rim distance of the second side from impeller center axial direction impeller
The distance of first side gradually increases；Third side is convex surface, also, third side is different from the direction that first side is protruded,
Distance of the third side from the outer rim of impeller center axial direction impeller apart from first side gradually decreases；First joint face is convex surface,
First joint face is identical as the direction that third side is protruded, and the first joint face is connect with second side, third smooth-sided compression candles, and first
Distance of the joint face apart from first side is more than the distance of third lateral distance first side, herein the first joint face distance first
The distance that the distance of side is more than third lateral distance first side refers to that the first joint face at least exists a bit, at this point the
Distance of one joint face apart from first side is more than the maximum value of the distance of third lateral distance first side；First joint face away from
With a distance from first side be more than second side be more than distance of the second side apart from first side, herein, the first joint face away from
Refer to more than distance of the second side apart from first side more than second side with a distance from first side, on the first joint face
In the presence of a bit, distance of first joint face apart from first side is more than distance of the second side apart from first side at this point
Maximum value.
As other embodiment, third side is curved surface, also, the bending direction of third side and second side is curved
Qu Fangxiang is identical, and specifically, second side is concave surface, and second side is from the outer rim of impeller center axial direction impeller apart from first side
Distance gradually increase；Third side is concave surface, and third side is from the outer rim of impeller center axial direction impeller apart from first side
Distance gradually decreases；First joint face is convex surface, and the first joint face is connect with second side, third smooth-sided compression candles, the first connection
Identity distance is more than the distance of third lateral distance first side with a distance from first side, and the first joint face is apart from first side herein
Distance be more than third lateral distance first side distance refer to the first joint face at least exist a bit, at this point first connect
Distance of the junction apart from first side is more than the maximum value of third lateral distance first side distance；First joint face distance first
The distance of side is more than second side and is more than distance of the second side apart from first side, herein, the first joint face distance first
It refers to that there are one on the first joint face that the distance of side, which is more than second side more than distance of the second side apart from first side,
Point, at this point distance of first joint face apart from first side be more than distance of the second side apart from first side maximum
Value.
Referring to FIG. 6, blade 41 has circumferential thickness h, circumferential thickness refers to an impeller face has friendship with impeller middle spindle
Point, the intersection point are known as the first centre point O, scatter the circle of different radii outward using the first centre point O as the center of circle and the circle and leaf
The first side and second side of piece 41 intersect or the circle intersects with the first side 413 of blade 4 and third side 415, position
Arc length between first side 413 and second side 414, first side 413 and third side 415 is circumference thickness
Degree, circumferential thickness include first kind circumferential thickness h1 and the second class circumferential thickness h2, and first kind circumferential thickness h1 refers to being located at the
Circumferential thickness between one side and second side, the second class circumferential thickness h2 refers between first side and third side
Circumferential thickness, the outer rim of first kind circumferential thickness h1 from impeller center axial direction impeller gradually increases, the increase of circumferential thickness h2
The excretion coefficient of blade can be increased after far from impeller inlet, impeller blade is relatively thick, and excretion coefficient is relatively large, the mistake of impeller
Flow area is opposite to be reduced, in this way, can be driven with the stability of relative increase driven type centrifugal pump lift curve and the opposite electricity that improves
The efficiency of dynamic centrifugal pump；The outer rim of second class circumferential thickness from impeller center axial direction impeller is gradually reduced.
Blade 41 increases apart from first side 413 apart from gradual from the outer rim second side 414 of impeller center axial direction impeller,
Third side 415 increases apart from first side 413 apart from gradual, and such structure will produce deformation during blade shapes
The problems such as, the problems such as in order to reduce deformation, hollow portion 418 is arranged in blade 41, which is upward from vane tip 411
The blind hole that cover board 42 extends to form, the depth of the blind hole are less than or equal to the height of blade 41, and the height of blade 41 refers to blade top
The distance between portion 411 and root of blade 412, hollow portion 418 are provided with conducive to 41 uniform wall thickness of blade, another party is kept
Face, hollow portion 418 can also reduce the quality of blade 41.More specifically, the first joint face 416 apart from first side 413 most
Big distance is more than or equal to 1.5 times of minimum range of the second side 414 apart from first side 413, and hollow portion is arranged in blade 41, in
Empty portion 418 is the blind hole extended to form from vane tip 411 to upper cover plate 42, and the depth of the blind hole is less than or equal to blade 41
Highly, bit width is more than 1mm in the blind hole, and bit width refers to along impeller outer edge radial direction in blind hole, and blind hole has middle position position
It sets, at the bit positions, is more than 1mm with respect to the distance on both sides along impeller outer edge circumferential direction blind hole, hollow portion 418 is located at least in the
Between one joint face 416 and first side 413, in Fig. 4-embodiments shown in fig. 6, the shape of hollow portion 418 and blade
Cross sectional shape is substantially similar, and the section of blade refers to the section that blade is intercepted with the face parallel with paddle wheel plane herein.It is hollow
The outer rim of the relatively close impeller in portion, hollow portion 418 are located at least between the second joint face 416 and first side 413, hollow portion
418 can mitigate the quality of impeller and can reduce the deformation of the injection molded of blade to a certain extent.
Upper cover plate component 4 includes blade 41 and upper cover plate 42, and blade 41 is shaped with 42 integrated injection molding of upper cover plate, please refers to figure
3, upper cover plate 42 is welded and fixed by blade 41 and lower cover 5.Lower cover 5 includes lower cover groove 51 and lower cover ontology 52,
51 equidistant circumference of lower cover groove is arranged in lower cover ontology 52 or lower cover groove 51 is evenly distributed on lower cover ontology
On 52, the setting of vane tip 411 and lower cover groove 51, the number of lower cover groove 51 are corresponding in the number of blade 41.Under
Lid panel notches 51 connect mating surface 514 including the first mating surface 511, the second mating surface 512, third mating surface 513 and first,
Wherein, the first mating surface 511 is convex surface, and the first mating surface 511 is matched with blade first side 411 and shape is identical；The
Two mating surfaces 512 are concave surface, and the second mating surface is matched with blade second side and shape is identical；Third mating surface 513 with
Blade third side matches and shape is identical；First connection mating surface 514 connects the second mating surface 512 and third cooperation
Face 513, the first connection mating surface 514 is matched with the first joint face 416 and shape is identical；The shape of lower cover groove 51 with
411 shape of vane tip is identical, and vane tip 411 is located at lower cover groove 51.
It is welded for the ease of blade 41 and lower cover 5, the first joint portion 419, lower cover groove 51 is arranged in vane tip 411
The first engagement of setting auxiliary section 515, the first joint portion 419 engage 515 phase of auxiliary section with first and weld.Wherein, the first joint portion
419 protrude from vane tip 411 and the first joint portion 419 close to blade first side 413 be arranged, the first joint portion 419 can
It is bent setting of postponing according to 413 curved shape of first side；Lower cover groove 51 includes lower cover groove floor 516, Ruo Gan
One engagement auxiliary section 515 protrusion is set to lower cover groove floor, and the first engagement auxiliary section 515 can be circumferentially disposed recessed in lower cover
Groove bottom.
It is welded for the ease of upper cover plate component 4 and lower cover 5, positioning column 4110, positioning column 4110 is arranged in vane tip 411
Than blade hollow portion 418 closer to impeller middle spindle, locating slot (being not shown on figure), 4110 part of positioning column is arranged in lower cover 5
Or it is entirely located in locating slot, positioning column 4110 and locating slot play the role of positioning.
It should be noted that：Above example is merely to illustrate the present invention and not limits technical side described in the invention
Case, such as "inner", "outside" "vertical" isotropy are defined, although this specification with reference to the above embodiments to the present invention
It is described in detail, still, it will be understood by those of ordinary skill in the art that, person of ordinary skill in the field is still
The present invention can be combined with each other, be changed or equivalent replacement, and all do not depart from the skill of the spirit and scope of the present invention
Art scheme and its improvement should all be covered in scope of the presently claimed invention.
Claims (10)
1. a kind of impeller, including upper cover plate, lower cover and multiple blades, the blade and the upper cover plate it is integrally formed or
The blade and the lower cover are integrally formed or blade is between the upper cover plate and the lower cover, the blade
Including vane tip, root of blade, the first side and the second side, first side and second side are set to institute
It states between vane tip and the root of blade, it is characterised in that：First side includes first side, second side
Including second side and third side, the second side is arranged than the third side close to impeller middle spindle, and described first
Side is convex surface, and the second side is concave surface；Using the first side as reference, from the axial impeller of the impeller center
Outer rim described in second side be gradually distance from the first side, the third side moves closer to the first side.
2. impeller according to claim 1, which is characterized in that the blade includes the first joint face, first connection
Face connects the second side and the third side, first joint face and the second side, the third side light
Slip, the third side are plane, and first joint face is convex surface, and first joint face is apart from the first side
Distance be more than distance of the second side apart from the first side.
3. impeller according to claim 1, which is characterized in that the blade includes the first joint face, first connection
Face connects the second side and the third side, first joint face and the second side, the third side light
Slip, the third side are curved surface, and the bending direction of the third side is different from the bending direction of the second side,
First joint face and the third side are convex surface；
Or the blade includes the first joint face, first joint face connects the second side and the third side,
First joint face is connect with the second side, the third smooth-sided compression candles, and the third side is curved surface, the third
The bending direction of side is identical as the bending direction of the second side, and first joint face is convex surface, first connection
Identity distance is more than distance of the second side apart from the first side with a distance from the first side.
4. impeller according to claim 2 or 3, which is characterized in that the blade includes the second joint face, and described second connects
Junction connects the third side and the first side, second joint face are aligned setting with the lower cover outer rim.
5. impeller as claimed in claim 4, second joint face has a circumferential thickness, and the third side is from lower cover edge
Impeller middle spindle has projection to upper cover plate, and the third side includes boundary portion, the boundary portion refer to the third side from
For lower cover along the impeller center axially projection of the upper cover plate and the intersection of the upper cover plate outer rim, the impeller includes the
One limit portion, first limit portion refer to when the second joint face circumferential thickness is 0.3mm, and the third side is from lower cover
Along impeller center, axially the projection of the upper cover plate and the intersection of the upper cover plate outer rim, the impeller include the second pole to plate
Limit portion, second limit portion refer to the second side extended surface from lower cover along the axial upper cover plate of impeller center
Projection and the intersection of the upper cover plate outer rim, the boudary portion in first limit portion and second limit portion it
Between, the boundary portion can be overlapped with first limit portion, and the boundary portion and second limit portion are misaligned.
6. according to claim 1-5 any one of them impellers, which is characterized in that the blade includes hollow portion, described 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 blade
Highly.
7. according to claim 1-5 any one of them impellers, which is characterized in that first joint face is apart from first side
The maximum distance in face is more than or equal to 1.5 times of minimum range of the second side apart from the first side, the leaf packet
Hollow portion is included, 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
Degree is less than or equal to the height of blade, and bit width is more than 1mm in the blind hole.
8. the impeller described according to claim 6 or 7, which is characterized in that the upper cover plate and the blade integrated injection molding, it is described
Upper cover plate is welded and fixed by the blade and the lower cover, and the vane tip is formed with positioning column, the lower cover packet
Lower cover groove is included, the vane tip is set to the lower cover groove, the lower cover groove number and the blade
Number is corresponding, and there is the lower cover locating slot, the positioning column to be inserted into the locating slot, and the positioning column is than the hollow portion
It is arranged close to the impeller middle spindle.
9. a kind of impeller, including upper cover plate, lower cover and multiple blades, the blade and the upper cover plate it is integrally formed or
The blade and the lower cover are integrally formed or the blade is between the upper cover plate and the lower cover, described
Blade includes vane tip, root of blade, the first side and the second side, and first side and second side are arranged
Between the vane tip and the root of blade, it is characterised in that：First side includes first side, and described second
Side includes second side and third side, and the second side is arranged than the third side close to impeller middle spindle, described
First side is convex surface, and the second side is concave surface, and the blade has circumferential thickness, and the circumferential thickness includes the first kind
Circumferential thickness and the second class circumferential thickness, the first kind circumferential thickness refer to being located at the first side and the second side
Between circumferential thickness, the second class circumferential thickness refers to the circumference between the first side and the third side
The outer rim of thickness, first circumferential thickness from impeller center axial direction impeller gradually increases, and second circumferential thickness is from impeller
The outer rim of central axial impeller is gradually reduced.
10. a kind of centrifugal pump, including impeller, the impeller is claim 1-9 any one of them impellers.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710101912.1A CN108506243A (en) | 2017-02-24 | 2017-02-24 | Impeller and centrifugal pump with the impeller |
| CN201710498611.7A CN108506244A (en) | 2017-02-24 | 2017-02-24 | Impeller and centrifugal pump with the impeller |
| CN201720798619.0U CN207961044U (en) | 2017-02-24 | 2017-07-04 | Impeller and centrifugal pump with the impeller |
| CN201880004616.2A CN109996967A (en) | 2017-02-24 | 2018-02-23 | Impeller and electrodynamic pump |
| PCT/CN2018/076997 WO2018153350A1 (en) | 2017-02-24 | 2018-02-23 | Impeller and electric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710101912.1A CN108506243A (en) | 2017-02-24 | 2017-02-24 | Impeller and centrifugal pump with the impeller |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710498611.7A Division CN108506244A (en) | 2017-02-24 | 2017-02-24 | Impeller and centrifugal pump with the impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108506243A true CN108506243A (en) | 2018-09-07 |
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 After (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
Country Status (2)
| Country | Link |
|---|---|
| CN (4) | CN108506243A (en) |
| WO (1) | WO2018153350A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022042693A1 (en) * | 2020-08-27 | 2022-03-03 | 芜湖美的厨卫电器制造有限公司 | Impeller, water pump, and water heater |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506243A (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 |
| US10359049B2 (en) * | 2017-10-27 | 2019-07-23 | Asia Vital Components Co., Ltd. | Impeller blades structure and rotor assembly using same |
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| CN2086336U (en) * | 1990-10-09 | 1991-10-09 | 江苏工学院 | No-overload low-unit speed centrifugal pump centrifugal impeller |
| JP4432474B2 (en) * | 2003-11-27 | 2010-03-17 | ダイキン工業株式会社 | Centrifugal blower impeller and centrifugal blower provided with the impeller |
| JP2005240630A (en) * | 2004-02-25 | 2005-09-08 | Tsurumi Mfg Co Ltd | Constraint preventing structure of submergible centrifugal pump |
| CN1587650A (en) * | 2004-07-28 | 2005-03-02 | 斯奈克玛马达公司 | Hollow fan blade for turbine engine and producing method for said blade |
| JP2010065528A (en) * | 2008-09-08 | 2010-03-25 | Nidec Shibaura Corp | Pump |
| JP2012072695A (en) * | 2010-09-28 | 2012-04-12 | Honda Motor Co Ltd | Centrifugal pump |
| CN202073830U (en) * | 2011-04-29 | 2011-12-14 | 友森精机股份有限公司 | Pumping impeller |
| CN103375431A (en) * | 2012-04-27 | 2013-10-30 | 天津市强硕机械零件有限公司 | Four-blade large-head slurry pump impeller |
| US9599120B2 (en) * | 2012-08-24 | 2017-03-21 | Asmo Co., Ltd. | Impeller for centrifugal pump and centrifugal pump of vehicle washer device |
| CN105889123A (en) * | 2014-12-30 | 2016-08-24 | 兰州理工大学 | Novel-structure impeller of low-specific-speed centrifugal pump |
| CN104564716A (en) * | 2015-01-06 | 2015-04-29 | 浙江理工大学 | Improvement method of centrifugal pump steady flow impeller |
| CN204628101U (en) * | 2015-05-13 | 2015-09-09 | 上海新源动力有限公司 | A kind of centrifugal water pump combination double shrouded wheel |
| CN106337833A (en) * | 2015-07-06 | 2017-01-18 | 杭州三花研究院有限公司 | Impeller, centrifugal pump and electric drive pump |
| CN106341007B (en) * | 2015-07-06 | 2019-08-23 | 浙江三花汽车零部件有限公司 | The manufacturing method of electric drive pump |
| CN205315343U (en) * | 2015-12-09 | 2016-06-15 | 上海济鼎实业有限公司 | Power electronic pump impeller structure among new energy automobile |
| CN108506243A (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 |
-
2017
- 2017-02-24 CN CN201710101912.1A patent/CN108506243A/en active Pending
- 2017-02-24 CN CN201710498611.7A patent/CN108506244A/en active Pending
- 2017-07-04 CN CN201720798619.0U patent/CN207961044U/en active Active
-
2018
- 2018-02-23 WO PCT/CN2018/076997 patent/WO2018153350A1/en active Application Filing
- 2018-02-23 CN CN201880004616.2A patent/CN109996967A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022042693A1 (en) * | 2020-08-27 | 2022-03-03 | 芜湖美的厨卫电器制造有限公司 | Impeller, water pump, and water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109996967A (en) | 2019-07-09 |
| CN108506244A (en) | 2018-09-07 |
| WO2018153350A1 (en) | 2018-08-30 |
| CN207961044U (en) | 2018-10-12 |
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