Gree Electric Appliances, Inc. of Zhuhai

Gree Electric Appliances (wuhan) Co., Ltd

Yuhui Chen

Ruixing Zhong

Nan Jiang

Caiyun Jiang

Zhiping Zhang

Jianfei Liu

Rong Xie

Yi Zhou

Hongxing Wang

Zengyue Liu

Liandong Lei

Hua Liu

Hongbo Li

Wenteng Ye

Jingli Qi

Xinwang Ouyang

Baoqian Huang

Sheng Liu

Jing Zhang

Jian Hong Chen

The present disclosure provides a compressor rotor, a compressor and a refrigerant circulation system. The compressor rotor includes: a motor rotor including a plurality of rotor sections, a locking rod, a compression unit rotating part and a locking member. The rotor sections are fixedly connected in an axial direction and are provided with an axial through hole and the locking rod penetrates through the axial through hole. The compression unit rotating part is located at the end part of the motor rotor and is connected to the locking rod. The locking member is configured to lock the compression unit rotating part on the locking rod. The locking rod, the compression unit rotating part and the locking member form a pressing structure which applies a pressure toward an axial inner side to the motor rotor.

Compressor rotor, compressor and refrigerant circulation system

The present disclosure relates to a centrifugal compressor and air conditioning equipment. The centrifugal compressor includes: a main shaft; a diffuser, provided with a first thrust bearing at one end away from a diffusion surface; a supporting assembly, provided with a second thrust bearing at one end facing towards the diffuser; and a thrust disk, configured to rotate together with the main shaft, located between the diffuser and the supporting assembly along an axial direction and provided with a thrust portion, a clearance between one side of the thrust portion and the first thrust bearing and a clearance between the other side of the thrust portion and the second thrust bearing being limited through mutual abutting of the diffuser and the supporting assembly.

Centrifugal compressor and air conditioning equipment

The present disclosure relates to a bearing supporting assembly and a machining method thereof, and a centrifugal compressor. The bearing supporting assembly includes: bearing supports, provided with through holes for mounting radial bearings; and a fixing plate, detachably mounted at one end of each of the bearing supports along an axial direction, sides, away from the bearing supports, of the fixing plates being configured to mount first thrust bearings.

Bearing supporting assembly and machining method thereof, and centrifugal compressor

The present application provides a stator blade, a compressor structure and a compressor. The stator blade comprises a blade body, wherein a cavity is formed inside the blade body, and a gas supply hole is formed on the blade body. The present application forms a jet on the suction surface of the stator blade by supplemented gas, thereby blowing off the low-speed low-energy region formed by the suction surface, reducing the gas flow mixing loss caused by the supplemented gas, thereby improving the aerodynamic efficiency of the centrifugal compressor.

Stator blade, compressor structure and compressor

Some embodiments of the disclosure provide a bearing installation and fixation structure and a compressor. The bearing installation and fixation structure includes: a rotatable shaft (); a bearing (), provided on the rotatable shaft () in a sleeving manner; and an axial locating member, provided on the rotatable shaft () in a sleeving manner and including a fixing connecting section () and an axial locating section () that are integrated with each other; the fixing connecting section () is detachably fixed on the rotatable shaft (); and the axial locating section () limits a position of the bearing () axially.

Bearing installation and fixation structure and compressor

Embodiments of the present disclosure describe a reflux device blade and a compressor. The reflux device blade includes a blade main body, a hollow cavity is formed in the blade main body, and an air supplement hole is formed in the blade main body. When the hollow reflux device blade is adopted, the supplemental air entering the hollow cavity of the reflux device blade through an air supplement channel forms jet flow on a suction surface of the reflux device blade to blow off a low-speed low-energy area formed on the suction surface, so as to reduce the airflow mixing loss, prevent the intake distortion of a second-stage impeller, and improve the operation range of the compressor.

Reflux device blade compressor

An integrated structure of a return device and a pressure diffuser, and a centrifugal compressor are provided. The structure includes a pressure diffuser portion and a return device portion integrally molded with the pressure diffuser portion. The pressure diffuser portion is configured to form a pressure diffusion flow channel. The return device portion has a return channel. The return channel is in communication with the pressure diffusion flow channel, and is configured to guide gas from the pressure diffusion flow channel. The structure of the present invention eliminates a need of independently installing a return device and a pressure diffuser, and eliminates connection seams caused by assembly and misalignment caused by accumulated errors. Therefore, gas can smoothly flow through the pressure diffusion flow channel into the return channel, such that a gas flow is well guided, and the gas flow uniformity is better.

Integrated structure of refluxer and pressure diffuser, and centrifugal compressor

Provided are a centrifugal compressor gas-supplementing structure and a compressor using the foregoing gas-supplementing structure. The centrifugal compressor gas-supplementing structure includes a annular gas-supplementing passage () for introducing supplemented gas into a gas passage () of a compressor, and an airflow-guiding assembly is provided in the annular gas-supplementing passage (). The gas-guiding assembly is used for adjusting a direction of the supplemented gas flowing into the gas passage (), so that an angle between a direction of the supplemented gas flowing into the gas passage () and a direction of an airflow in the gas passage () falls within a preset range, and a turbulence loss generated when the two passages of gas merge is avoided to the greatest extent, thereby improving cycle efficiency.

Centrifugal compressor gas-supplementing structure and compressor

The invention discloses a centrifugal compressor. The centrifugal compressor includes multiple stages of compression units which are communicated in sequence. Each stage of compression unit includes a diffusion cavity () and a diffusion adjustment device, wherein the diffusion adjustment device includes a movable member () configured to change a radial flow area of the diffusion cavity () provided in correspondence thereto, the movable member () being movably provided in an axial direction of the centrifugal compressor. The invention also discloses a centrifugal unit having the centrifugal compressor. The movable member of each stage of compression unit of the centrifugal compressor changes the radial flow area of the diffusion cavity of this stage of compression unit, thereby effectively reducing the possibility of surging.

Centrifugal compressor and centrifugal unit having the same

The invention discloses a centrifugal compressor. The centrifugal compressor comprises: a housing (), provided with a mounting chamber (), a thread section () being provided on a side wall of the mounting chamber (); an adjusting piece (), mounted in the mounting chamber (), the adjusting piece () being provided with threads adapting to the thread section (); a driving piece (), mounted in the mounting chamber () and configured to drive the adjusting piece () to move forwards or backwards along the thread section (); and an adjustable diffuser (), fixedly connected to the adjusting piece (). The invention also discloses a centrifugal water chilling unit having the centrifugal compressor. The centrifugal compressor and the centrifugal water chilling unit can solve the problem that the adjustable diffuser easily inclines and is stuck, thereby greatly improving the reliability of the centrifugal compressor.

Centrifugal compressor and centrifugal water chilling unit

The invention discloses a centrifugal compressor and a water chilling unit having the same. The centrifugal compressor includes an impeller (), a diffuser (), a volute () and an exhaust diffuser pipe (), the diffuser () including a pressurization passage, air flowing through the impeller () entering an inlet of each pressurization passage, the volute () being configured to collect the air pressurized by the diffuser (), the exhaust diffuser pipe being communicated with the volute, and an extending direction of the exhaust diffuser pipe inclining downwards with respect to a horizontal plane. The extending direction of the exhaust diffuser pipe communicated with the volute inclines downwards with respect to the horizontal plane, so that noise and airflow losses of high-temperature and high-pressure air in the exhaust diffuser pipe expelled from the centrifugal compressor due to bending of the pipe can be reduced, and the noise can be effectively reduced.

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Zhuhai, China

Yuhui Chen