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CN-122014645-A - Centrifugal compressor system

CN122014645ACN 122014645 ACN122014645 ACN 122014645ACN-122014645-A

Abstract

The application relates to the technical field of centrifugal compressors and discloses a centrifugal compressor system which comprises a compressor assembly, at least one ultrasonic generator and at least one ultrasonic generator, wherein the compressor assembly comprises an impeller, an impeller housing, a diffuser and a volute, the impeller is arranged on the impeller housing, the diffuser is arranged at an outlet of the impeller, the volute is connected with the impeller housing and is arranged at an outlet side of the diffuser, and the ultrasonic generator is fixed on at least one of the impeller housing and the diffuser. Therefore, the centrifugal compressor system utilizes ultrasonic waves to carry out micro vibration and blending on working medium gas in the system, so that low-energy fluid of a boundary layer can continuously obtain energy injection of fluid in a main flow area, thereby improving kinetic energy of the boundary layer and turbulent kinetic energy of the main flow area, further delaying separation and delaying surge, improving surge allowance, improving the maximum bearing load of blades, improving efficiency of a centrifugal machine, and enabling a compressor component to keep stable running under wider working conditions.

Inventors

  • WANG GUODONG

Assignees

  • 重庆美的通用制冷设备有限公司
  • 美的集团股份有限公司

Dates

Publication Date
20260512
Application Date
20260319

Claims (11)

  1. 1. A centrifugal compressor system, comprising: The compressor assembly comprises an impeller, an impeller housing, a diffuser and a volute, wherein the impeller is arranged on the impeller housing, the diffuser is arranged at an outlet of the impeller, and the volute is connected with the impeller housing and is arranged at an outlet side of the diffuser; At least one ultrasonic generator secured to at least one of the impeller housing and the diffuser.
  2. 2. The centrifugal compressor system of claim 1, wherein the ultrasonic generator comprises a first ultrasonic generator disposed in the impeller housing and located circumferentially outward of the impeller.
  3. 3. The centrifugal compressor system of claim 2, wherein the plurality of first ultrasonic generators are arranged at intervals along the circumferential direction of the impeller housing.
  4. 4. The centrifugal compressor system of claim 2, wherein the ultrasonic generator includes a second ultrasonic generator disposed at the diffuser and located circumferentially outward of the impeller housing.
  5. 5. The centrifugal compressor system of claim 4, wherein the second ultrasonic generators are a plurality of the second ultrasonic generators arranged at intervals along the circumferential direction of the diffuser.
  6. 6. The centrifugal compressor system of claim 4, wherein the central axes of the first ultrasonic generator, the second ultrasonic generator, and the impeller are arranged non-collinearly in an axial projection of the compressor assembly.
  7. 7. The centrifugal compressor system of claim 1, wherein the compressor assembly further comprises: The mounting seat is arranged on the impeller housing or the diffuser and is used for arranging the ultrasonic generator; The fixing piece is arranged on the mounting seat and used for fixing the ultrasonic generator on the mounting seat.
  8. 8. The centrifugal compressor system according to claim 7, wherein the mount is provided with a mounting hole for accommodating at least part of the ultrasonic generator and disposed so as to be open to one side of the compressor assembly in the axial direction, an angle between the axial direction of the mounting hole and a central axis of the impeller being α, and satisfying a relation of 30 ° or more and α or less than 60 °.
  9. 9. The centrifugal compressor system of claim 7, wherein the plurality of mounting seats are provided, each mounting seat is provided with a mounting hole for accommodating at least a portion of the ultrasonic generator, an axial direction of each mounting hole is arranged to intersect with a central axis of the impeller, and degrees of included angles between the axial directions of at least two mounting holes and the central axis of the impeller are different.
  10. 10. The centrifugal compressor system of claim 1, wherein a wall surface of the impeller housing is provided with a first through hole for receiving and mounting the ultrasonic generator; and/or the diffuser is provided with a second through hole, and the second through hole is used for accommodating and installing the ultrasonic generator; And/or the impeller housing is provided with a first accommodating groove which is used for accommodating the ultrasonic generator; and/or the diffuser is provided with a second accommodating groove, and the second accommodating groove is used for accommodating the ultrasonic generator.
  11. 11. The centrifugal compressor system of claim 1, wherein the ultrasonic generator has an ultrasonic output power of not less than 0.1W/cm 2 ; And/or the ultrasonic frequency output by the ultrasonic generator is in the range of 20kHz-100 kHz.

Description

Centrifugal compressor system Technical Field The invention relates to the technical field of centrifugal compressors, in particular to a centrifugal compressor system. Background The centrifugal compressor is high-efficiency, light and stable air compressing equipment, is widely applied to the technical fields of vehicles, ships, aviation and the like, and has the advantages of high single-stage pressure ratio, wide working range, simple and compact structure, few parts, high reliability and the like. In the related art, the operation working condition range of the centrifugal compressor is limited, and particularly under the low-flow working condition, phenomena such as large-scale flow separation and the like can occur in the centrifugal compressor, so that unstable flow occurs in the centrifugal compressor, stall and even surge are caused, the pressure ratio and efficiency of the centrifugal compressor are easily reduced, severe axial vibration and noise can be generated, the service life of the centrifugal compressor is shortened, and even the centrifugal compressor is possibly damaged in a short time. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a centrifugal compressor system, which can realize stability by an ultrasonic generator to promote mixing of working medium gas by ultrasonic waves, thereby improving the flow state inside a compressor assembly, preventing sounding of large-scale flow separation phenomenon, and helping to promote the stability and reliability of operation of the compressor assembly. The centrifugal compressor system comprises a compressor assembly, at least one ultrasonic generator and at least one ultrasonic generator, wherein the compressor assembly comprises an impeller, an impeller housing, a diffuser and a volute, the impeller is arranged on the impeller housing, the diffuser is arranged at an outlet of the impeller, the volute is connected with the impeller housing and is arranged at an outlet side of the diffuser, and the ultrasonic generator is fixed on at least one of the impeller housing and the diffuser. According to the centrifugal compressor system provided by the embodiment of the application, the impeller housing and the diffuser in the compressor assembly can be provided with the ultrasonic generator, and the ultrasonic generator can emit ultrasonic waves, so that the mixing of working medium gas is promoted, the flow separation is reduced by utilizing an ultrasonic technology, and the surge can be effectively eliminated and delayed. Therefore, the centrifugal compressor system can utilize the ultrasonic generator to delay the surge generation and increase the surge margin under the low-flow working condition so as to improve the working range and the adaptability of the compressor component and ensure that the compressor component can keep stable operation under wider working conditions. According to some embodiments of the application, the ultrasonic generator comprises a first ultrasonic generator provided to the impeller housing and located circumferentially outward of the impeller. According to some embodiments of the application, the plurality of first ultrasonic generators are arranged at intervals along the circumferential direction of the impeller housing. According to some embodiments of the application, the ultrasonic generator includes a second ultrasonic generator disposed at the diffuser and located circumferentially outward of the impeller housing. According to some embodiments of the application, the second ultrasonic generators are a plurality of, and the second ultrasonic generators are arranged at intervals along the circumferential direction of the diffuser. According to some embodiments of the application, the central axes of the first ultrasonic generator, the second ultrasonic generator and the impeller are arranged non-collinearly in an axial projection of the compressor assembly. According to some embodiments of the application, the compressor assembly further comprises a mounting seat provided on the impeller housing or the diffuser and used for arranging the ultrasonic generator, and a fixing piece provided on the mounting seat and used for fixing the ultrasonic generator to the mounting seat. According to some embodiments of the application, the mounting seat is provided with a mounting hole, the mounting hole is used for accommodating at least part of the ultrasonic generator and is opened to one side of the compressor assembly in the axial direction, an included angle between the axial direction of the mounting hole and the central axis of the impeller is alpha, and the relation is 30 degrees less than or equal to alpha less than or equal to 60 degrees. According to some embodiments of the application, the plurality of mounting seats are provided, each mounting seat is provided with the mounti