US 11,946,476 B2
Compressor rotor, compressor and refrigerant circulation system
Hua Liu, Guangdong (CN); Zhiping Zhang, Guangdong (CN); Yuhui Chen, Guangdong (CN); Ruixing Zhong, Guangdong (CN); Hongbo Li, Guangdong (CN); Wenteng Ye, Guangdong (CN); and Jingli Qi, Guangdong (CN)
Assigned to Gree Electric Appliances, Inc. of Zhuhai, Guangdong (CN)
Appl. No. 17/288,210
Filed by Gree Electric Appliances, Inc. of Zhuhai, Guangdong (CN)
PCT Filed Oct. 23, 2019, PCT No. PCT/CN2019/112789
§ 371(c)(1), (2) Date Apr. 23, 2021,
PCT Pub. No. WO2020/134424, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 201811595102.7 (CN), filed on Dec. 25, 2018.
Prior Publication US 2021/0404475 A1, Dec. 30, 2021
Int. Cl. F04D 25/06 (2006.01); F04D 17/10 (2006.01); F04D 29/28 (2006.01); H02K 1/27 (2022.01); H02K 1/2706 (2022.01); H02K 1/28 (2006.01); H02K 7/14 (2006.01); F25B 31/02 (2006.01)
CPC F04D 25/06 (2013.01) [F04D 17/10 (2013.01); F04D 29/284 (2013.01); H02K 1/2706 (2013.01); H02K 1/28 (2013.01); H02K 7/14 (2013.01); F25B 31/026 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A compressor rotor, comprising:
a motor rotor comprising a plurality of rotor sections fixedly connected in an axial direction, wherein the plurality of rotor sections are provided with an axial through hole;
a locking rod penetrating through the axial through hole;
a compression unit rotating part located on an end of the motor rotor and connected to the locking rod; and
a locking member configured to lock the compression unit rotating part on the locking rod, wherein 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;
wherein the axial through hole comprises a small-diameter section and two large-diameter sections which have a larger diameter than the small-diameter section;
the locking rod comprises a rod body in clearance fit with the small-diameter section and two protrusion parts arranged on the rod body and radially protruding outwards from the rod body, wherein the protrusion parts are fit with the large-diameter section;
an axial middle part of the motor rotor comprises a permanent magnet, the small-diameter section is located at an axial middle part of the axial through hole;
the two large-diameter sections are respectively located at a first end and a second end of the axial through hole;
at least one of the two protrusion parts is a movable protrusion part movable relative to the rod body;
the rod body is provided with a shaft shoulder, and the movable protrusion part is arranged between a surface of one end of the motor rotor and the shaft shoulder;
the compression unit rotating part at one end of the motor rotor where the movable protrusion part is arranged comprises an axial lug boss;
the axial lug boss extends into the axial through hole; and
the movable protrusion part is axially arranged between the shaft shoulder and an end face of the axial lug boss.