CN108506244A - Impeller and centrifugal pump with the impeller - Google Patents
Impeller and centrifugal pump with the impeller Download PDFInfo
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- CN108506244A CN108506244A CN201710498611.7A CN201710498611A CN108506244A CN 108506244 A CN108506244 A CN 108506244A CN 201710498611 A CN201710498611 A CN 201710498611A CN 108506244 A CN108506244 A CN 108506244A
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- Prior art keywords
- impeller
- blade
- joint face
- lower cover
- distance
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Classifications
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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
-
- 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
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2272—Rotors specially for centrifugal pumps with special measures for influencing flow or boundary layer
-
- 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
-
- 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
-
- 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
Landscapes
- 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 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, can be conducive to the stability of the head curve of the centrifugal pump using this impeller 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
The application is：2017-2-24, application No. is 201710101912.1, entitled impeller and
The divisional application of centrifugal pump Chinese invention patent application with the impeller.
【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 the high hydraulic efficiency requirement of centrifugal pump met 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, for the blade between the upper cover plate and the lower cover, the blade includes leaf head, blade tail
Portion, 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 center, from the blade
Head gradually increases to the blade afterbody, the distance of the second side to the first side, the third side to institute
The distance for stating first side is gradually reduced.
A kind of impeller, including upper cover plate, lower cover and multiple blades, the blade be located at the upper cover plate and it is described under
Between cover board, the blade includes vane tip, root of blade, the first side and the second side, first side and institute
It states the second side to be set between the vane tip and the root of blade, first side includes first side, described
Second side includes second side and third side, and the second side is arranged than the third side close to impeller middle spindle,
The first side is convex surface, and the second side is concave surface, and it includes that the blade, which has circumferential thickness, the circumferential thickness,
A kind of circumferential thickness and the second class circumferential thickness, the first kind circumferential thickness refer to being located at the first side and described second
Circumferential thickness between side, the second class circumferential thickness refer between the first side and the third side
The outer rim of circumferential thickness, first circumferential thickness from impeller center axial direction impeller gradually increases, and second circumferential thickness is certainly
The outer rim of impeller center axial direction impeller 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 head
Portion, blade afterbody, vane tip, root of blade, first side, second side and third side, from the leaf head to
The distance of the blade afterbody, the second side to the first side gradually increases, and can increase the exclusion of blade in this way
Coefficient can be conducive to the stability of the head curve of the centrifugal pump of this impeller and improve using this impeller to a certain extent
The efficiency of centrifugal pump；The distance of third side to the first side is gradually reduced.Can to a certain extent can in this way
Whirlpool loss is reduced, the hydraulic efficiency of the centrifugal pump using this impeller is improved.
【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, Fig. 2 be in Fig. 1 driven type from
Heart pump along the directions A-A diagrammatic cross-section, incorporated by reference to reference to figure 1 and Fig. 2, driven type centrifugal pump 100 include first shell 11,
Second shell 12, rotor assembly 2, stator module 3 and end cap 13, first shell 11 are connect with second shell 12, second shell
12 and end cap 13 connect, driven type centrifugal pump 100 include accommodating chamber, which includes first shell 11, second shell 12
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 include impeller 21 and rotor 22 can only include impeller for mechanical centrifugal pump rotor component certainly, 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.It certainly can be according to the whole lift of electric drive centrifugal pump
And hydraulic efficiency, 4-8 blade is set on upper cover plate 42.For ease of description, pictorial symbolization is carried out on multiple blades.Blade
41 include vane tip 411 and root of blade 412, leaf head a, blade afterbody b, and blade 41 has the first side and the second side
Portion, wherein the first side and the second side are set between vane tip 411 and root of blade 412, root of blade 412 with it is upper
42 integrated injection molding of cover board shapes, and when driven type centrifugal pump 100 works, the pressure that the first side is born is greater than the second side
The pressure born.First side includes first side 413, and the second side includes second side 414 and third side 415, and second
Side 414 is than third side 415 closer to impeller center, and first side 413 is convex surface, and second side 414 is concave surface, as it
Its embodiment, first side 413, second side 414 can be plane.From leaf head a to root of blade b, second side 414
Distance to first side 413 gradually increases, and herein, the distance of second side 414 to first side 413 refers in second side
The minimum value of point and the distance between arbitrary point in first side 413 on 414, from leaf head a to root of blade b, third
The distance of side 415 to first side 413 is gradually reduced, and herein, the distance of third side 413 to first side 413 refers to
The distance between arbitrary point minimum value on point and first side 413 on three sides 415.Second side 414 from leaf head a to
The distance of root of blade b, second side 414 to first side 413 gradually increase, and can increase the excretion coefficient of blade, one
Determine the stability that can be conducive to the head curve of driven type centrifugal pump in degree and the efficiency for improving driven type centrifugal 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 working media point
From and the whirlpool loss that is formed, the loss of this whirlpool can reduce the lift and effect of driven type centrifugal pump to a certain extent
Rate, therefore, back pressure side include third side 415, from leaf head a to root of blade b, 415 the first side of distance of third side
The distance in face 413 is gradually reduced, and third side 415 can reduce whirlpool loss to a certain extent, correspondingly to a certain extent
The opposite 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
For concave surface, third side 415 is plane, wherein with first side 413 to refer to, second side 414 is apart from first side 413
Distance gradually increased by impeller center axial direction impeller outer edge, distance of the second side 414 apart from first side 413 is herein
Refer to, 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 the 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 of first joint face 416 apart from first side 413 and the
Distance of the two side faces apart from first side is similar, i.e. on the first joint face 416 there is any to be known as second point, at the second point
It is known as the second tangent line with tangent line, there is the second vertical line at second point, second vertical line is by second point and with second
Tangent line is perpendicular, and the second vertical line and second side 413 have intersection point to be known as the second intersection point, between second point and the second intersection point away from
The distance of first side 413 with a distance from referred to as the first joint face 416.Distance of first joint face 416 apart from first side 413
Distance more than second side 414 apart from first side 413, distance of first joint face 416 apart from first side 413 is big herein
Refer at least being known as in the presence of some point on the first joint face 416 in distance of the second side 414 apart from first side 413
First arbitrary point is at least known as the second arbitrary point in second side 414, the second side at the second any point in the presence of some point
Distance away from 414 apart from first side 413 is the maximum value of distance of the second side 414 apart from first side 413, first
Distance of first joint face 416 apart from first side 413 is more than 415 distance first of second side at the second arbitrary point at meaning point
The distance of side 413.Distance of the third side 415 apart from first side 413 refers to having a little to be known as third on third side
Point is thirdly located have the third tangent line tangent with third side at this, is also had at thirdly place perpendicular with third tangent line
Third vertical line, third vertical line pass through thirdly, and third vertical line with first side 413 there is intersection point to be known as third intersection point,
Thirdly it is known as distance of the third side 415 apart from first side 413 with the distance between third intersection point.First joint face 416
Distance apart from first side 413 is more than distance of the third side 415 apart from first side 413, herein the first joint face 416 away from
Refer to more than distance of the third side 415 apart from first side 413 with a distance from first side 413, in the first joint face 416
On be at least known as third arbitrary point in the presence of some point, be at least known as the 4th arbitrary point in the presence of some point in third side 414,
At the 4th arbitrary point third side away from 414 distance apart from first side 413 be third side 414 apart from first side 413
Distance maximum value, distance of first joint face 416 apart from first side 413 is more than arbitrary the 4th at third arbitrary point
Distance of the third side 415 apart from first side 413 at point.
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 be 0.3mm, third side from lower cover along impeller middle spindle to the projection of upper cover plate with it is upper
The intersection of cover board outer rim；Impeller 21 further includes the second limit contribution, which refers to second side 414
Extended surface from lower cover along impeller middle spindle to the intersection of the projection of upper cover plate and upper cover plate outer rim, second side 414
Extended surface refers to the face extended to impeller outer edge the case where not changing second side bending degree；Boundary portion A is located at first limit
Between portion and the 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
Greatly, third side 415 increases apart from first side 413 apart from gradual, and such structure will produce during blade shapes
The problems such as deformation, the problems such as in order to reduce deformation, hollow portion 418 is arranged in blade 41, which is from vane tip 411
The blind hole extended to form to upper cover plate 42, 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 leaf
The distance between 411 and root of blade 412 at the top of piece, hollow portion 418 are provided with conducive to 41 uniform wall thickness of blade is kept, separately
On the one hand, hollow portion 418 can also reduce the quality of blade 41.More specifically, the first joint face 416 is apart from first side 413
Maximum distance be more than or equal to 1.5 times of minimum range of the second side 414 apart from first side 413, blade 41 is arranged hollow
Portion, hollow portion 418 are the blind holes 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 leaf
The height of piece 41, 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
Bit positions, at the bit positions, the distance along impeller outer edge circumferential direction blind hole with respect to both sides is more than 1mm, and hollow portion 418 is at least
Between the first joint face 416 and first side 413, in Fig. 4-embodiments shown in fig. 6, the shape of hollow portion 418 with
The cross sectional shape of blade is substantially similar, and the section of blade refers to section that blade is intercepted with the face parallel with paddle wheel plane herein
Face.The outer rim of the relatively close impeller of hollow 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 include the first mating surface 511, the second mating surface 512, the connection mating surface of third mating surface 513 and first
514, wherein the first mating surface 511 is convex surface, and the first mating surface 511 is matched with blade first side 411 and shape phase
Together；Second mating surface 512 is concave surface, and the second mating surface is matched with blade second side and shape is identical；Third mating surface
513 match and shape is identical with blade third side；First connection mating surface 514 connects the second mating surface 512 and third
Mating surface 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
Shape is identical as 411 shape of vane tip, 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 is located at the upper cover plate and the lower cover
Between 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 set between the vane tip and the root of blade, it is characterised in that：Institute
It includes first side to state the first side, and second side includes second side and third side, described in the second side ratio
Third side is arranged close to impeller center, from the leaf head to the blade afterbody, the second side to described first
The distance of side gradually increases, and the distance of third side to the first side is gradually reduced.
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 first side are convex surface, and the second side is concave surface, and the third side is plane, first connection
Face is convex surface, and distance of first joint face apart from the first side is more than the second side apart from the first side
Distance.
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 first side are convex surface, and the second side is concave surface, and the third side is curved surface, the third side
Bending direction it 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, the first side be convex surface, described second
Side is concave surface, and the third side is curved surface, the bending direction of the bending direction and the second side of the third side
Identical, first joint face is convex surface, and distance of first joint face apart from the first side is more than the second side
Identity distance is 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 is located at the upper cover plate and the lower cover
Between plate, the blade includes vane tip, root of blade, the first side and the second side, first side and described
Second side is set between the vane tip and the root of blade, it is characterised in that：First side includes first
Side, second side include second side and third side, and the second side is than the third side in impeller
Mandrel is arranged, and the first side is convex surface, and the second side is concave surface, and the blade has circumferential thickness, the circumference
Thickness includes first kind circumferential thickness and the second class circumferential thickness, and the first kind circumferential thickness refers to being located at the first side
Circumferential thickness between the second side, the second class circumferential thickness refer to being located at the first side and the third
The outer rim of circumferential thickness between side, first circumferential thickness from impeller center axial direction impeller gradually increases, and described second
The outer rim of circumferential thickness from impeller center axial direction 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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710498611.7A CN108506244A (en) | 2017-02-24 | 2017-02-24 | Impeller and centrifugal pump with the impeller |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710498611.7A CN108506244A (en) | 2017-02-24 | 2017-02-24 | Impeller and centrifugal pump with the impeller |
| CN201710101912.1A CN108506243A (en) | 2017-02-24 | 2017-02-24 | Impeller and centrifugal pump with the impeller |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710101912.1A Division CN108506243A (en) | 2017-02-24 | 2017-02-24 | Impeller and centrifugal pump with the impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108506244A true CN108506244A (en) | 2018-09-07 |
Family
ID=63253334
Family Applications (4)
| 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 |
| CN201710101912.1A Pending CN108506243A (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 |
|---|---|---|---|
| CN201710101912.1A Pending CN108506243A (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) | CN108506244A (en) |
| WO (1) | WO2018153350A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109996967A (en) * | 2017-02-24 | 2019-07-09 | 杭州三花研究院有限公司 | Impeller and electrodynamic pump |
Families Citing this family (2)
| 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 |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2018153350A1 (en) | 2018-08-30 |
| CN207961044U (en) | 2018-10-12 |
| CN108506243A (en) | 2018-09-07 |
| CN109996967A (en) | 2019-07-09 |
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Application publication date: 20180907 |