Reciprocating compressor
US8887621B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2011 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Jul 29, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B39/0016
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A reciprocating compressor including an oscillation-type piston mechanism is provided with a piston ring which is mounted in a piston ring groove to seal a space between a piston and a cylinder. A ring groove other than the piston ring groove is provided at an outer periphery of the piston on a side away from the piston ring groove and closer to a crank shaft. A guide ring, which is inhibited from radial movement and shaped like a skirt opened toward the crank shaft, is mounted in the ring groove. Thus, the oscillation-type reciprocating compressor is adapted to maintain long-term durability even under high-pressure compression condition and to prevent heat propagation to a large end portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.