Magnetic valve, especially three-way valve as a switching device for multi-temperature cooling apparatus with only one refrigeration machine
US4242116A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 1978 |
| Grant date | Dec 30, 1980 |
| Priority date | — |
| Expiry date | May 16, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86895
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A three-way magnetic valve as a switching device for refrigerators with two different temperature compartments operated with only one refrigeration machine, has an axial bore hole in a tubular housing with an inlet to the bore hole of the housing and an outlet at each end of the housing, a rod-like plunger with a sealing member at end, axially movable in the bore hole so as to seal one end and open the other end and vice versa, a coil of an electro-magnet mounted on the housing, an armature axially movable in the housing to engage and move, when energized, the plunger against the restoring force of a spring. A damping spring is also provided. The valve is simple in design, less expensive, smaller in dimensions, and is substantially trouble-free for long periods of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.