Thermostatic expansion valve
US5065595A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1990 |
| Grant date | Nov 19, 1991 |
| Priority date | — |
| Expiry date | Dec 5, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B41/335
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
This thermostatic expansion valve (12) is intended for use in a refrigeration system (10) which includes a compressor (14), a condenser (16) and an evaporator (18). The valve (12) includes a valve body (20) having an inlet (26) and an outlet (28). A valve port (34) and a valve element (38) are disposed between the inlet and outlet. Upper and lower diaphragm assemblies (24, 25) are provided at each end of the valve (12) connected to associated sensing bulbs (56, 58) at the inlet and outlet respectively of the evaporator (18). A push rod assembly (40) operatively interconnects the upper and lower diaphragm assemblies (24, 25) and modulates the valve element (38) in response to the change in differential temperature across the evaporator. A compression spring (36) acts directly on the valve element and provides an adjustable feature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.