Refrigerant expansion device
US4633681A · kind A · utility
47Cited by
8References
12Claims
0Family size
Inventor
Key dates
| Filing date | Aug 19, 1985 |
| Grant date | Jan 6, 1987 |
| Priority date | — |
| Expiry date | Aug 19, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/791
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An expansion device for refrigeration systems replaces capillary tubes and automatic expansion valves. A housing is provided having an inlet tube for connection to the liquid line from the condenser and an outlet tube for connection to the evaporator. The outlet tube has a valve like seat in its inner end and orifice grooves formed in the seat. A steel ball is movably disposed in the housing such that liquid refrigerant during compressor operation forces the ball into the seat thereby forming an expansion orifice between the ball and the seat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.