Title:
【発明の名称】好適には冷媒を圧送するための方法及び装置
Document Type and Number:
Japanese Patent JPH03502358
Kind Code:
A
Abstract:
PCT No. PCT/SE89/00029 Sec. 371 Date Jul. 24, 1990 Sec. 102(e) Date Jul. 24, 1990 PCT Filed Jan. 27, 1989 PCT Pub. No. WO89/07227 PCT Pub. Date Aug. 10, 1989.A method and apparatus for enabling refrigerants, preferably freons, to be emptied from refrigeration systems or heat pump systems with the aid of piston compressor pumps when repairing or scrapping such systems. The compressor suction line is connected to one chamber of a heat exchanger and a pressure reduction valve is connected in the suction line upstream of the heat exchanger. The pressure line extending from the compressor passes to an oil separator and then to the other chamber of the heat exchanger. The fall in pressure in the reduction valve and heating of the refrigerant in the heat exchanger causes the refrigerant to be in a gaseous state when reaching the compressor, which is a prerequisite for safe operation of the compressor. The pressure increase achieved in the compressor pump and cooling of the refrigerant in the heat exchanger enables the refrigerant to be delivered to a container, preferably in a liquid state.
Inventors:
Oman, Yang-Olav, Leander
Application Number:
JP50192289A
Publication Date:
May 30, 1991
Filing Date:
January 27, 1989
Export Citation:
Assignee:
Oman, Yang-Olav, Leander
Olson, Class, Obe
Olson, Class, Obe
International Classes:
F25B45/00; F25B; (IPC1-7): F25B45/00
Domestic Patent References:
| JP53137351B | ||||
| JPS5534538U | 1980-03-05 |
Attorney, Agent or Firm:
Akira Asamura (3 outside)