Piston limiting structure, compressor, and heat exchange apparatus

US11976643B2 · kind B2 · utility

Assignee

• GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI · CN

Inventors

• Jia Xu · Zhuhai, CN
• Yusheng Hu · Beijing, CN
• Huijun Wei · Longbeilingcun, CN
• Sen Yang · Zhuhai, CN
• Zhongcheng Du · Zhuhai, CN
• Zhi Li · 红钢城街道, CN
• Liping Ren · Tangxia, CN
• Shebing Liang · Zhuhai, CN
• Rongting Zhang · Zhuhai, CN
• Zhengliang Shi · Zhuhai, CN
• Ning Ding · Beijing, CN
• Yibo Liu · Boxborough, US
• Shuang Guo · Kunshan, CN
• Liping LIAO · Longbeilingcun, CN

Key dates

• Filing date: Sep 20, 2019
• Grant date: May 7, 2024
• Expiry date: Sep 17, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04C2240/30
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A piston limiting structure, including: a cylinder, a piston, and a flange provided with a limiting piece, the cylinder has a piston hole perpendicular to an axial direction of the cylinder and penetrating through the cylinder, and a projection of the piston hole in a penetrating direction is circular. The piston is disposed in the piston hole in a form-fit manner and is slid in the piston hole in a reciprocating manner. A side wall of the piston is provided with a thrust groove, a bottom surface of the thrust groove forms a thrust surface on the side wall of the piston, and the thrust groove does not penetrate through two ends of the side wall of the piston along an axial length of the piston. The limiting piece abuts against the thrust surface.