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CN-224214433-U - Impeller, compressor and electrical equipment

CN224214433UCN 224214433 UCN224214433 UCN 224214433UCN-224214433-U

Abstract

The application relates to an impeller, a compressor and electrical equipment, wherein the impeller comprises a hub and a channel component, the channel component is arranged around the periphery of the hub, the channel component comprises a wheel cover and a wheel disc which are arranged oppositely, an air inlet channel is arranged between the wheel cover and the hub, an air outlet channel is arranged between the wheel cover and the wheel disc, and a preset gap is reserved between one side of the hub, which is away from the air inlet channel, and the wheel disc for forming an air supplementing port communicated with the air inlet channel. The impeller provided by the application has the advantages that the preset gap is formed between one side of the hub, which is opposite to the air inlet channel, and the wheel disc, so that the air inlet air flow and the air supplementing air flow respectively enter the impeller from two sides of the hub, and the axial force exerted on the impeller by a part of the air inlet air flow can be completely counteracted or counteracted by the air supplementing air flow on one side of the hub, so that the axial load of the impeller can be reduced, the axial load of a bearing is reduced, the running efficiency of the compressor is improved, and the running stability of a rotor inside the compressor can be improved.

Inventors

  • Shu Chenxu
  • JIANG NAN
  • Ye Wenteng
  • ZHONG RUIXING

Assignees

  • 珠海格力电器股份有限公司

Dates

Publication Date
20260508
Application Date
20250519

Claims (12)

  1. 1. An impeller, comprising: a hub (1); The channel assembly (2) is arranged around the periphery of the hub (1), the channel assembly (2) comprises a wheel cover (21) and a wheel disc (22) which are oppositely arranged, an air inlet channel (23) is arranged between the wheel cover (21) and the hub (1), and an air outlet channel (24) is arranged between the wheel cover (21) and the wheel disc (22); a preset gap is formed between one side of the hub (1) facing away from the air inlet channel (23) and the wheel disc (22) so as to form an air supplementing port (25) communicated with the air inlet channel (23).
  2. 2. Impeller according to claim 1, characterized in that the outer circumference of the hub (1) is provided with a deflector (11) extending towards the air supply opening (25).
  3. 3. Impeller according to claim 2, characterized in that the flow guiding portion (11) comprises a first flow guiding surface (111) and a second flow guiding surface (112), the first flow guiding surface (111) being arranged towards the shroud (21) for realizing the air flow guiding in the inlet channel (23), the second flow guiding surface (112) being arranged away from the shroud (21) and extending towards the outlet channel (24) for realizing the air flow guiding at the air compensating opening (25).
  4. 4. An impeller according to claim 3, characterized in that the first and second guide surfaces (111, 112) are arranged in parallel and each extend towards the outlet channel (24).
  5. 5. The impeller according to any one of claims 1 to 4, further comprising a vane assembly (3), said vane assembly (3) being connected between said hub (1) and said channel assembly (2) for forming said inlet channel (23) and said outlet channel (24).
  6. 6. The impeller according to claim 5, characterized in that the vane assembly (3) includes a plurality of guide vanes (31), the plurality of guide vanes (31) are sequentially arranged along the circumferential direction of the hub (1), and the air supplementing port (25) is correspondingly arranged at the middle part of the guide vanes (31).
  7. 7. A compressor, characterized by comprising an impeller according to any one of claims 1 to 6, and further comprising a casing (4), said impeller being rotatably disposed inside said casing (4), said casing (4) being provided with a gas-compensating channel (41) communicating with said gas-compensating port (25).
  8. 8. Compressor according to claim 7, characterized in that the tank (4) is provided with an air inlet (42), the air inlet (42) being in communication with the air inlet channel (23), the air inlet (42) and the air supplementing channel (41) being located on both sides of the impeller, respectively, in the axial direction of the impeller.
  9. 9. The compressor according to claim 7, further comprising a rotating shaft (5), wherein the impeller is coaxially disposed on the rotating shaft (5), the rotating shaft (5) has a shoulder (51) disposed opposite to the outlet of the air supplementing passage (41), the hub (1) is abutted to the shoulder (51), and the hub (1) is disposed protruding from the shoulder (51) in a radial direction of the rotating shaft (5).
  10. 10. The compressor of claim 7, further comprising a diffuser (6), wherein the diffuser (6) is disposed on the casing (4), the gas outlet passage (24) communicates with the diffuser (6), and the impeller is in sealing abutment with the casing (4) and the diffuser (6), respectively.
  11. 11. Compressor according to claim 10, characterized in that the impeller, the casing (4) and the diffuser (6) are provided with comb seal structures.
  12. 12. An electrical apparatus comprising a compressor as claimed in any one of claims 7 to 11.

Description

Impeller, compressor and electrical equipment Technical Field The application relates to the technical field of compressors, in particular to an impeller, a compressor and electrical equipment. Background In the prior art, for the purposes of increasing the output capacity of the compressor, improving the operation efficiency of the system and the like, a certain amount of gas can be supplemented through the air supplementing channel in the working process of the compressor, so that the enthalpy of the system can be increased and the energy efficiency can be improved. In the air supplementing process, the air input from the air supplementing channel is required to be fully mixed with the main flow high-pressure air, and the impeller generates shearing force through high-speed rotation, so that the air supplementing air and the main flow air are quickly mixed in the flow channel. However, the main airflow is axially input and radially output along the impeller, so that axial force in a single direction can be generated on the impeller, the axial loads of the impeller and the bearing in the compressor can be increased, and the service lives of the bearing and the compressor are influenced. Disclosure of utility model The application provides an impeller, a compressor and electrical equipment, which are used for solving the technical problem that in the prior art, axial loads of the impeller and a bearing in the compressor are increased due to the fact that the impeller bears axial force in a single direction. In a first aspect, the present application provides an impeller comprising: A hub; The channel component is arranged around the periphery of the wheel hub and comprises a wheel cover and a wheel disc which are oppositely arranged, an air inlet channel is arranged between the wheel cover and the wheel hub, and an air outlet channel is arranged between the wheel cover and the wheel disc; A preset gap is reserved between one side of the hub, which is away from the air inlet channel, and the wheel disc, so that an air supplementing port communicated with the air inlet channel is formed. Optionally, a flow guiding part extending towards the air supplementing port is arranged on the periphery of the hub. Optionally, the flow guiding part comprises a first flow guiding surface and a second flow guiding surface, the first flow guiding surface is arranged towards the wheel cover and used for guiding the air flow in the air inlet channel, and the second flow guiding surface is arranged away from the wheel cover and extends towards the air outlet channel and used for guiding the air flow at the air supplementing port. Optionally, the first flow guiding surface and the second flow guiding surface are arranged in parallel and extend towards the air outlet channel. Optionally, the impeller further comprises a vane assembly connected between the hub and the channel assembly for forming an inlet channel and an outlet channel. Optionally, the blade assembly includes a plurality of guide vanes, and a plurality of guide vanes set gradually along the circumference of wheel hub, and the air supplementing port corresponds to setting up in the middle part of guide vane. In a second aspect, the present application provides a compressor, including the impeller provided in the first aspect of the present application, and further including a casing, the impeller being rotatably disposed in the casing, and the casing being provided with an air supply channel communicating with the air supply port. Optionally, an air inlet is arranged on the box body, the air inlet is communicated with the air inlet channel, and the air inlet and the air supplementing channel are respectively positioned at two sides of the impeller in the axial direction of the impeller. Optionally, the compressor further comprises a rotating shaft, the impeller is coaxially arranged on the rotating shaft, the rotating shaft is provided with a shaft shoulder which is opposite to the outlet of the air supplementing channel, the hub is abutted to the shaft shoulder, and the hub protrudes out of the shaft shoulder in the radial direction of the rotating shaft. Optionally, the compressor further comprises a diffuser, the diffuser is arranged on the box body, the air outlet channel is communicated with the diffuser, and the impeller is respectively in sealing abutting connection with the box body and the diffuser. Optionally, comb teeth sealing structures are arranged on the impeller, the box body and the diffuser. In a third aspect, the present application provides an electrical apparatus comprising the compressor provided in the second aspect of the present application. Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: The impeller provided by the embodiment of the application has the advantages that the preset gap is formed between the side, facing away from the air inlet channel, of the hub a