Global Patent Index - EP 0422973 B1

EP 0422973 B1 19930113 - REFRIGERATION PROCESS AND APPARATUS USING A REFRIGERANT MIXTURE

Title (en)

REFRIGERATION PROCESS AND APPARATUS USING A REFRIGERANT MIXTURE

Publication

EP 0422973 B1 19930113 (FR)

Application

EP 90402595 A 19900920

Priority

FR 8913158 A 19891009

Abstract (en)

[origin: JPH03134437A] PURPOSE: To improve cooling efficiency, by separating light components in a mixture from heavy components through permeation for the most part, and rendering only a remaining portion due to one permeation to a condensation stage by cooling and an expansion stage. CONSTITUTION: The present equipment includes a single circulation compressor 2, a permeation unit 3, a condenser 4, an indirect heat exchanger 5, and an expansion valve 6. There is used a mixture containing a heavy component of one kind and a light component of a least one kind, and the light component is mostly separated from the heavy component through the permeation unit 3 between a compression stage with the compressor 2 and a condensation stage with cooling of the condenser 4. The condensation stage with cooling and the expansion stage are applied only to a remaining fraction of the permeation, and a permeated material is added to an expanded remaining fraction, and further an evaporation stage is applied to the whole of the mixture. As a result, temperature is easily reduced down to a low temperature with a single compressor.

IPC 1-7

F25B 9/00; F25B 25/00

IPC 8 full level

F25B 1/00 (2006.01); F25B 9/00 (2006.01)

CPC (source: EP KR US)

F25B 1/00 (2013.01 - KR); F25B 9/006 (2013.01 - EP US)

Designated contracting state (EPC)

BE DE DK ES FR GB IT NL SE

DOCDB simple family (publication)

EP 0422973 A1 19910417; EP 0422973 B1 19930113; AU 6327690 A 19910411; CA 2027066 A1 19910410; DE 69000766 D1 19930225; DE 69000766 T2 19930429; FR 2652884 A1 19910412; FR 2652884 B1 19921016; JP 3006692 B2 20000207; JP H03134437 A 19910607; KR 910008351 A 19910531; US 5086623 A 19920211

DOCDB simple family (application)

EP 90402595 A 19900920; AU 6327690 A 19900928; CA 2027066 A 19901005; DE 69000766 T 19900920; FR 8913158 A 19891009; JP 26396490 A 19901003; KR 900015916 A 19901008; US 59107690 A 19901001