Oil equalizing system for multiple compressors

Details Oil equalizing system for multiple compressors Oil equalizing system for multiple compressors

2006-03-07

2006-03-07

Jones, Melvin (Department: 3744)

Refrigeration

Refrigeration producer

With lubricant handling means

C062S510000

Reexamination Certificate

active

07007503

ABSTRACT:
An oil equalizing system for multiple compressors which does not require a particular machining process for shells of the compressors, thereby being capable of preventing an increase in costs, while maintaining oil in each compressor in a proper amount. In a refrigerant circuit, in which at least three compressors are connected in parallel, the oil equalizing system includes an oil equalizing tube adapted to communicate shells of the compressors with one another, and a bypass tube adapted to connect the oil equalizing tube to a discharge side refrigerant line for the compressors. The shell of each compressor is directly communicated with the shell of each of the remaining compressors by the oil equalizing tube.

REFERENCES:
patent: 4741674 (1988-05-01), Tischer
patent: 5996363 (1999-12-01), Kurachi et al.
patent: 6453691 (2002-09-01), Seo et al.
patent: 6722156 (2004-04-01), Tanimoto et al.
patent: 411063691 (1999-03-01), None

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