US 12,117,020 B2
Air compressor and vehicle
Pengfei Niu, Baoding (CN); Zhengyu Wang, Baoding (CN); Haifeng Tang, Baoding (CN); Gaoxia Zhao, Baoding (CN); Xiaoliang Chen, Baoding (CN); Tao Guo, Baoding (CN); Zeyu Zhang, Baoding (CN); Xiangjun Wang, Baoding (CN); Peiming Wu, Baoding (CN); Olgierd Krzysztof Urbanczyk, Baoding (CN); Lei Gao, Baoding (CN); Haichao Yu, Baoding (CN); Yang Feng, Baoding (CN); Minglong Kang, Baoding (CN); Dapeng Gao, Baoding (CN); Zili Ren, Baoding (CN); and Ruyi Yang, Baoding (CN)
Assigned to GREAT WALL MOTOR COMPANY LIMITED, Hebei (CN)
Appl. No. 17/790,467
Filed by GREAT WALL MOTOR COMPANY LIMITED, Baoding (CN)
PCT Filed Feb. 26, 2021, PCT No. PCT/CN2021/078159
§ 371(c)(1), (2) Date Jun. 30, 2022,
PCT Pub. No. WO2021/170088, PCT Pub. Date Sep. 2, 2021.
Claims priority of application No. 202010127802.4 (CN), filed on Feb. 28, 2020.
Prior Publication US 2023/0049251 A1, Feb. 16, 2023
Int. Cl. F04D 29/58 (2006.01); F04D 25/06 (2006.01); F04D 27/02 (2006.01); F04D 29/051 (2006.01); F04D 29/10 (2006.01); F04D 29/42 (2006.01); F04D 29/44 (2006.01)
CPC F04D 29/5806 (2013.01) [F04D 27/0207 (2013.01); F04D 29/0513 (2013.01); F04D 29/4206 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An air compressor, wherein the air compressor comprises:
a housing assembly, wherein the housing assembly has a first installation cavity, a second installation cavity and a rotation-shaft cooperating cavity, the rotation-shaft cooperating cavity is disposed between the first installation cavity and the second installation cavity, and the first installation cavity has a gas inlet and a gas outlet;
a rotor shaft, wherein the rotor shaft is rotatably fitted inside the rotation-shaft cooperating cavity, and extends into the first installation cavity and the second installation cavity;
a pressure wheel, wherein the pressure wheel is nested to the rotor shaft and is located inside the first installation cavity, and the housing assembly is provided with a controlling flow channel for communicating a gas-intake side and a wheel-back side of the pressure wheel; and
a driving assembly, wherein the driving assembly is nested to the rotor shaft and is located inside the second installation cavity;
the first installation cavity is provided with a returning opening, and the returning opening is disposed on the gas-intake side of the pressure wheel and is in communication with the controlling flow channel; and
the controlling flow channel comprises an internal flow channel and an external flow channel, the internal flow channel is defined by the housing assembly and is in communication with the wheel-back side of the pressure wheel, the external flow channel is in communication with the internal flow channel and the returning opening and is located outside the housing assembly, and the external flow channel comprises a communicating pipe.