Heat pump with multiple compressors

Details Heat pump with multiple compressors Heat pump with multiple compressors

1985-05-17

1986-05-06

Capossela, Ronald C.

Refrigeration

Refrigeration producer

With lubricant handling means

62510, F25B 4302

Patent

active

045863512

ABSTRACT:
A heat pump having a plurality of compressors disposed in parallel is disclosed. An oil separator is disposed on the discharge sides of the compressors so as to separate any lubricating oil entrained in the refrigerant discharged from the compressors. The lubricating oil is accumulated in the oil separator and is then passed to an accumulator, from where it is returned to the compressors with returning refrigerant. Control means are provided for controlling the flow of oil from the oil separator into the accumulator. Rather than passing through the heat exchangers of the apparatus, the lubricating oil is quickly returned to the compressors from which it is discharged, thereby preventing oil shortages from developing in the compressors. Check valves are provided on the intake and discharge sides of the compressors to prevent liquids remaining in the piping of the apparatus from accumulating in the intake and discharge openings of a stopped compressor, thereby preventing damage to the valves of the compressors at start-up.

REFERENCES:
patent: 3633377 (1972-01-01), Quick
patent: 3873289 (1975-03-01), White
patent: 4213307 (1980-07-01), Watson
patent: 4383802 (1983-05-01), Gianni et al.
patent: 4435962 (1984-03-01), Mochizuki et al.
patent: 4530215 (1985-07-01), Kramer

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