Patent · US Expired

Disc-type automatic expansion valve for refrigerant

US3973410A · kind A · utility

14Cited by
3References
7Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 18, 1975
Grant dateAug 10, 1976
Priority date—
Expiry dateApr 18, 1995

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10T137/7869
  • WIPO fieldControl
  • WIPO sectorInstruments

Abstract

An automatic expansion valve for controlling refrigerant flow from a condenser to an evaporator in which the valve includes an apertured deflectable disc which defines the refrigerant expanson orifice with other structure within the valve, and with the flow passage arrangement in the valve body being such as to subject the upstream face of the disc to the pressure of the liquid refrigerant, and the downstream face of the disc to the pressure of the expanded vaporous refrigerant so that the disc deflects in accordance with the differential pressure on the opposite faces and accordingly effects changes in the effective opening of the expansion orifice.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.