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CN-224200859-U - Movable impeller of fan and fan thereof

CN224200859UCN 224200859 UCN224200859 UCN 224200859UCN-224200859-U

Abstract

The utility model discloses a movable impeller of a fan and the fan thereof, comprising an upper movable impeller end disc and a lower movable impeller end disc which are respectively distributed at intervals up and down, wherein a movable impeller air inlet is formed in the center of the upper movable impeller end disc, the lower movable impeller end disc is fixedly connected with an output shaft of a fan motor, a plurality of movable impeller blades distributed in an arc shape are arranged between the upper movable impeller end disc and the lower movable impeller end disc, a movable impeller air outlet is formed between the outer sides of adjacent movable impeller blades, an air guide structure close to the movable impeller air inlet is arranged on the inner side of each movable impeller blade, the air inlet angle of the air guide structure is set to be 95-100 degrees, preferably 96-99.5 degrees, more preferably 96-99 degrees, and the fan adopting the movable impeller can obviously reduce the working noise of the fan.

Inventors

  • FANG HAN
  • SUN RONGQI
  • SHI YONG

Assignees

  • 无锡康沃特变频电机有限公司

Dates

Publication Date
20260505
Application Date
20250608

Claims (14)

  1. 1. A movable impeller of a fan is characterized by comprising an upper end disc and a lower end disc which are respectively distributed at intervals up and down, A movable impeller air inlet is formed in the center of the upper end disc of the movable impeller; the lower end disc of the movable impeller is fixedly connected with an output shaft of the fan motor; A plurality of movable impeller blades distributed in an arc shape are arranged between the upper end disc of the movable impeller and the lower end disc of the movable impeller, a movable impeller air outlet is formed between the outer sides of the adjacent movable impeller blades, an air guide structure close to an air inlet of the movable impeller is arranged on the inner side of each movable impeller blade, and the air inlet angle of the air guide structure is 95-100 degrees.
  2. 2. The impeller of claim 1, wherein the air intake angle of the air guiding structure is set to 96-99.5 °.
  3. 3. The impeller of claim 1, wherein the air intake angle of the air guiding structure is set to 96-99 °.
  4. 4. The impeller of claim 1 wherein the inlet air angle of each impeller blade is equal.
  5. 5. The movable impeller of the fan according to claim 1, wherein the air guiding structure is in a plane shape, and an included angle between the plane and the axis of the air inlet of the movable impeller is used as an air inlet angle of the air guiding structure.
  6. 6. The impeller of claim 5, wherein the width of the plane is set to 0.8-1.5mm as a wind guide line length of the wind guide structure.
  7. 7. The impeller of the fan according to claim 6, wherein the length of the air guide line is set to 1-1.5mm.
  8. 8. The impeller of a fan according to claim 1, 5 or 6, wherein the arc of each impeller blade is in the shape of a circular arc having a radius of 13-15mm.
  9. 9. The impeller of claim 1, 5 or 6, wherein each impeller blade is integrally formed with its corresponding wind guiding structure.
  10. 10. The impeller of claim 1, wherein the upper end of each impeller blade is in contact with the impeller upper end disk and the lower end thereof is in contact with the impeller lower end disk.
  11. 11. The impeller of a wind turbine of claim 1 wherein the number of impeller blades is 10-14.
  12. 12. The impeller of a wind turbine according to claim 1, wherein the number of impeller blades is 11-13.
  13. 13. The impeller of a fan according to claim 1, wherein the diameter of the air inlet of the impeller is 18-22mm, and/or the air outlets of the impeller are circumferentially spaced, the circumferential diameter of the air outlets of the impeller is 30-34mm, and/or the air guiding structures of the blades of the impeller are circumferentially spaced, and the circumferential diameter of the air guiding structures is 15-19mm.
  14. 14. A fan comprises a movable impeller, wherein a movable impeller outer cover is arranged on the periphery of the movable impeller in a relatively rotatable manner, and the movable impeller is fixedly connected with an output shaft of a fan motor into a whole, and the fan is characterized in that the movable impeller of the fan according to any one of claims 1-13 is adopted.

Description

Movable impeller of fan and fan thereof Technical Field The utility model belongs to the field of fans, and particularly relates to a movable vane wheel assembly of a fan and the fan thereof. Background As is well known, fans have been widely used in household appliances. With the continuous development of the market, the requirements of people on household appliances are continuously improved, and further, in order to obtain better use experience, the noise generated by the fan of the household appliances during working is expected to be continuously reduced. While the impeller is a key core component for determining the working noise of the fan, some techniques have been proposed to optimize the structure to reduce the working noise. However, these optimization schemes either have limited optimization effects on their operating noise or the optimization structure employed is complex (e.g., a large number of bucket blades). Accordingly, the applicant has sought to improve upon the above technical problems. Disclosure of Invention Therefore, the utility model aims to provide a movable impeller of a fan and the fan thereof, and the fan adopting the movable impeller can obviously reduce the working noise of the fan. The technical scheme adopted by the utility model is as follows: A movable impeller of a fan comprises an upper end disk and a lower end disk of the movable impeller which are respectively distributed at intervals up and down, A movable impeller air inlet is formed in the center of the upper end disc of the movable impeller; the lower end disc of the movable impeller is fixedly connected with an output shaft of the fan motor; A plurality of movable impeller blades distributed in an arc shape are arranged between the upper end disc of the movable impeller and the lower end disc of the movable impeller, a movable impeller air outlet is formed between the outer sides of the adjacent movable impeller blades, an air guide structure close to an air inlet of the movable impeller is arranged on the inner side of each movable impeller blade, and the air inlet angle of the air guide structure is 95-100 degrees, preferably 96-99.5 degrees, more preferably 96-99 degrees. Preferably, the air inlet angles of the blades of each movable impeller are equal. Preferably, the air guiding structure is in a plane shape, and an included angle between the plane and the axis of the air inlet of the movable impeller is used as an air inlet angle of the air guiding structure. Preferably, the width of the plane is used as the length of the air guide line of the air guide structure, and the length of the air guide line is set to be 0.8-1.5mm, preferably 1-1.5mm. Preferably, the radian of each impeller blade adopts a circular arc shape, and the radius of the circular arc is 13-15mm. Preferably, each blade of the blade is integrally formed with its corresponding wind guiding structure. Preferably, the upper end of each impeller blade is in contact connection with the upper end disc of the impeller, and the lower end of each impeller blade is in contact connection with the lower end disc of the impeller. Preferably, the number of the impeller blades is 10-14, preferably 11-13. Preferably, the diameter range of the air inlet of the movable impeller is 18-22mm, and/or the air outlets of the movable impellers are circumferentially distributed at intervals, the circumferential diameter range of the air outlets of the movable impellers is 30-34mm, and/or the air guiding structures of the blades of the movable impellers are circumferentially distributed at intervals, and the circumferential diameter range of the air guiding structures is 15-19mm. A fan comprises a movable impeller, wherein a movable impeller outer cover is arranged on the periphery of the movable impeller in a relatively rotatable manner, and the movable impeller is fixedly connected with an output shaft of a fan motor into a whole, and the movable impeller adopts the movable impeller of the fan according to the above The application provides an air guide structure which is arranged on the inner side of each movable impeller blade and is close to an air inlet of the movable impeller, the air inlet angle of the air guide structure is 95-100 degrees, preferably 96-99.5 degrees, more preferably 96-99 degrees, and simultaneously the air guide structure is matched with the arc-shaped distribution design of the movable impeller blades (the radius of an arc is preferably 13-15 mm), so that the pulsation of the air flow of the fan in high-speed flow can be reduced, the pressure fluctuation of the air flow is further reduced, and the working noise of the fan is further obviously reduced; On the basis of the technical scheme, the application further preferably provides a specific preferred design (10-14, more preferably 11-13) for the number of the moving impeller blades, so that airflow load can be shared, vortex noise is reduced, meanwhile, the frequency of the moving impelle