Controlling superheat in a refrigeration system
US4835976A · kind A · utility
50Cited by
11References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 14, 1988 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Mar 14, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A vapor compression refrigeration system is which a self heated thermistor is located in the suction line downstream of the evaporator to directly sense the quality of the refrigerant flowing thereover. Appropriate circuitry measures the voltage drop across the thermistor and this drop is used to vary the duty cycle of the system's expansion valve thereby controlling the superheat of the evaporator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.