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CN-122014668-A - Impeller, electronic water pump and vehicle

CN122014668ACN 122014668 ACN122014668 ACN 122014668ACN-122014668-A

Abstract

The invention discloses an impeller, an electronic water pump and a vehicle, wherein the impeller comprises a base body and blade assemblies, blades are distributed at equal intervals around the circumferential direction of the base body, tail end surfaces of adjacent blades, a first cover plate and a second cover plate define fluid outlets, any two adjacent fluid outlets have different outlet areas, a plurality of blades are distributed at equal intervals around the circumferential direction of the base body, the mass distribution of the impeller is more balanced, the dynamic balance performance of the impeller can be improved, the impeller can rotate stably, the running noise of the water pump is reduced, in addition, any two adjacent fluid outlets are provided with different outlet areas, the flow velocity of fluid flowing out of the adjacent fluid outlets is different, the fluid with different flow velocity can flow to different positions of a baffle tongue, the action points of the blades for stirring the fluid to the baffle tongue are separated, the fluid energy is prevented from being scattered, and the pressure pulsation and the order noise of the impeller are reduced.

Inventors

  • JIANG KUN
  • FANG PAN
  • ZHOU CHANGXIN
  • TIAN YI
  • LU BIN
  • Teng shuang

Assignees

  • 浙江吉利控股集团有限公司
  • 龙泉夏芝热管理系统有限公司

Dates

Publication Date
20260512
Application Date
20260410

Claims (10)

  1. 1. An impeller, comprising: a base including a first cover plate and a second cover plate spaced apart along an axial direction; The blade assembly is arranged between the first cover plate and the second cover plate and comprises a plurality of blades, the two sides of the blades, which are opposite to each other along the axial direction, are respectively connected with the first cover plate and the second cover plate, and the blades are distributed at equal intervals around the circumference of the matrix; one end of each blade extending to the periphery of the base body is provided with a tail end face, a fluid outlet is defined by the tail end face of each adjacent blade, the first cover plate and the second cover plate, and any two adjacent fluid outlets are provided with different outlet areas.
  2. 2. The impeller of claim 1, wherein said blade assembly comprises x said blades, adjacent n said blades forming a mixing unit, said blade assembly comprising at least two of said mixing units, 3 n x/2, wherein, Any two of the fluid outlets have different outlet areas within each of the mixing units; and/or two of the fluid outlets belonging to adjacent mixing units and adjacent in the circumferential direction of the base body have different outlet areas.
  3. 3. The impeller of claim 1, wherein any two of the fluid outlets have different outlet areas.
  4. 4. The impeller according to claim 2, wherein the blade has a working face and a back face, the working face and the back face being provided on opposite sides of the trailing face in a circumferential direction of the base body, the blade defining the trailing face as an arc face being a first blade, the blade inclined toward a center of the base body along the direction of the second cover plate toward the first cover plate being a second blade, the blade gradually approaching the back face along the direction of the trailing face being a third blade; the blade assembly includes at least one of the first blade, the second blade, and the third blade.
  5. 5. The impeller of claim 4, wherein the mixing unit comprises at least one of the first blade, the second blade, and the third blade; or the mixing unit comprises the first blade, the second blade and the third blade, n=3.
  6. 6. The impeller according to claim 4, characterized in that two of the blades which belong to the adjacent mixing units and are adjacent in the circumferential direction of the base body are provided as two of the first blade, the second blade, and the third blade, respectively.
  7. 7. The impeller of any one of claims 1 to 6, wherein adjacent blades differ in length.
  8. 8. The impeller of claim 7, wherein the vane assembly comprises x vanes, wherein x/2 of the vanes are long vanes and x/2 of the vanes are short vanes, the long vanes having a length greater than the length of the short vanes, the long vanes alternating with the short vanes along the circumference of the base.
  9. 9. Electronic water pump, its characterized in that includes: The impeller of any one of claims 1 to 8, said blade assembly comprising x said blades; and the motor is connected with the impeller and used for driving the impeller to rotate, the pole pair number of the motor is y, the number of grooves of the motor is z, x/2 and y are prime numbers, and x/2 and z/3 are prime numbers.
  10. 10. A vehicle comprising the electronic water pump of claim 9.

Description

Impeller, electronic water pump and vehicle Technical Field The invention relates to the technical field of fluid machinery, in particular to an impeller, an electronic water pump and a vehicle. Background The conventional impeller generally comprises a plurality of blades distributed at equal intervals, when the impeller rotates, each blade periodically passes through the tongue of the volute and generates periodic fluid pressure pulsation, so that order noise is larger, in the related art, the interaction points of the blades and the tongue of the volute are staggered by adopting a mode of non-uniform arrangement of the blades so as to reduce the order noise, but the non-uniform arrangement of the blades leads to poor dynamic balance of the whole impeller and generates first-order noise, so that the noise optimization of the whole impeller is not ideal, and the NVH performance of the impeller cannot be improved. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the impeller, which can reduce the pressure pulsation and the order noise of the impeller and improve the dynamic balance performance of the impeller. The invention further provides an electronic water pump with the impeller. The invention further provides a vehicle with the electronic water pump. An impeller according to an embodiment of a first aspect of the invention comprises a base body and a blade assembly, wherein the base body comprises a first cover plate and a second cover plate which are axially spaced, the blade assembly is arranged between the first cover plate and the second cover plate, the blade assembly comprises a plurality of blades, the blades are respectively connected to the first cover plate and the second cover plate along two opposite sides of the axial direction, the blades are distributed at equal intervals around the circumference of the base body, one end of each blade extending to the periphery of the base body is provided with a tail end face, a fluid outlet is defined by the tail end face of each adjacent blade, the first cover plate and the second cover plate, and any two adjacent fluid outlets are provided with different outlet areas. The impeller provided by the embodiment of the invention has at least the following beneficial effects: In addition, any two adjacent fluid outlets are provided with different outlet areas, the flow rates of fluid flowing out from the adjacent fluid outlets are different, the fluid with different flow rates can flow to different positions of the partition tongue, the action points of the blades for stirring the fluid to the partition tongue are separated, the fluid energy is dispersed, the fluid energy is prevented from being concentrated on the partition tongue, and the pressure pulsation and the order noise of the impeller are reduced. According to some embodiments of the invention, the blade assembly comprises x blades, n adjacent blades form a mixing unit, the blade assembly comprises at least two mixing units, n is not less than 3 and not more than x/2, Any two of the fluid outlets have different outlet areas within each of the mixing units; and/or two of the fluid outlets belonging to adjacent mixing units and adjacent in the circumferential direction of the base body have different outlet areas. According to some embodiments of the invention, any two of the fluid outlets have different outlet areas. According to some embodiments of the invention, the blade has a working surface and a back surface, the working surface and the back surface being disposed on opposite sides of the trailing surface along a circumferential direction of the base; the blade with the tail end face inclined towards the center of the matrix along the direction of the second cover plate towards the first cover plate is a second blade, and the blade with the working face gradually approaching to the back face along the direction of the tail end face is a third blade; the blade assembly includes at least one of the first blade, the second blade, and the third blade. According to some embodiments of the invention, the mixing unit comprises at least one of the first blade, the second blade and the third blade; or the mixing unit comprises the first blade, the second blade and the third blade, n=3. According to some embodiments of the invention, two of the blades belonging to the adjacent mixing units and adjacent in the circumferential direction of the base body are provided as two of the first blade, the second blade, and the third blade, respectively. According to some embodiments of the invention, the lengths of adjacent blades are different. According to some embodiments of the invention, the blade assembly comprises x blades, wherein x/2 of the blades are long blades and x/2 of the blades are short blades, the length of the long blades is greater than that of the short blades, and the long blades