Vibration-dampening arrangement for a refrigerator operating according to the Gifford-McMahon principle
US5090206A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 14, 1991 |
| Grant date | Feb 25, 1992 |
| Priority date | — |
| Expiry date | Jan 14, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2500/13
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A refrigerator operating on the Gifford-McMahon principle includes a housing defining a work chamber; a displacement member received in the housing and being movable back and forth between two dead center positions; a regenerator mounted in the displacement member; a piston attached to and extending from the displacement member; a drive cylinder disposed in the housing and being arranged for slidably receiving the piston; an arrangement for introducing a low-pressure working gas and a high-pressure working gas into the drive cylinder and the work chamber for reciprocating the displacement member between its dead center positions; a device for exerting a continuous force on the displacement meber in one of the directions of its reciprocation; and a throttle-containing conduit communicating with the drive cylinder for continuously maintaining either the low-pressure gas or the high-pressure gas in the drive cylinder dependent upon the direction in which the continuous force is oriented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.