US 11,788,530 B2
Piston limiting structure, compressor, and heat exchange apparatus
Yusheng Hu, Guangdong (CN); Huijun Wei, Guangdong (CN); Jia Xu, Guangdong (CN); Zhongcheng Du, Guangdong (CN); Sen Yang, Guangdong (CN); Zhi Li, Guangdong (CN); Liping Ren, Guangdong (CN); Shebing Ren, Guangdong (CN); Shebing Liang, Guangdong (CN); Rongting Zhang, Guangdong (CN); Zhengliang Shi, Guangdong (CN); Ning Ding, Guangdong (CN); Shuang Guo, Guangdong (CN); and Liping Liao, Guangdong (CN)
Assigned to GREE ELECTRIC APPLICANCES, INC. OF ZHUHAI, Guangdong (CN)
Appl. No. 17/283,004
Filed by Gree Electric Appliances, Inc. of Zhuhai, Guangdong (CN)
PCT Filed Sep. 9, 2019, PCT No. PCT/CN2019/106724
§ 371(c)(1), (2) Date Apr. 5, 2021,
PCT Pub. No. WO2020/125099, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 201811549125.4 (CN), filed on Dec. 18, 2018.
Prior Publication US 2021/0348610 A1, Nov. 11, 2021
Int. Cl. F04C 18/344 (2006.01); F04C 29/04 (2006.01)
CPC F04C 18/344 (2013.01) [F04C 29/04 (2013.01); F04C 2270/17 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A piston limiting structure, comprising:
a cylinder, having a piston hole perpendicular to an axial direction of the cylinder and penetrating the cylinder, wherein a projection of the piston hole in a penetrating direction is circular;
a piston, disposed in the piston hole in a form-fit manner and slid in the piston hole in a reciprocating manner, wherein a side wall of the piston is provided with a limiting surface, and the limiting surface does not penetrate through two ends of the side wall of the piston along an axial direction of the piston;
a limiting member, wherein the cylinder is provided with a limiting hole passing from an outer wall of the cylinder to the piston hole, the limiting member is mounted in the limiting hole in the form-fit manner, and the limiting member abuts against the limiting surface to limit a rotation of the piston around its own axis; and
the limiting hole penetrates from an end face of the cylinder to the piston hole and is parallel to an axial direction of the cylinder.