Compression mechanism for refrigeration system

Details Compression mechanism for refrigeration system Compression mechanism for refrigeration system

2005-09-27

2005-09-27

Jones, Melvin (Department: 3744)

Refrigeration

Refrigeration producer

With lubricant handling means

C062S335000, C062S503000, C062S510000, C062S512000, C062S513000

Reexamination Certificate

active

06948335

ABSTRACT:
The present invention provides an oil equalizing circuit for a refrigeration system provided with a plurality of compression mechanisms, the oil equalizing circuit being capable of supplying sufficient oil to the compressors that are running during partial load operation. The refrigeration system compression mechanism is provided with the following: first, second, and third compressors; a refrigerant intake main pipe; first, second, and third intake branch pipes connected to the intake sides of the compressors; first, second, and third oil separators connected to the discharge sides of the compressors; and first, second, and third oil return pipes provided on the oil separators. The first oil return pipe is configured such that oil is delivered to the refrigerant intake main pipe due to gravity when only the first compressor is running. The second oil return pipe is configured such that oil is delivered to the refrigerant intake main pipe due to gravity when only the first and second compressors are running.

REFERENCES:
patent: 4788829 (1988-12-01), Takemasa et al.
patent: 5265443 (1993-11-01), Yuzawa et al.
patent: 11-6657 (1999-01-01), None
patent: 2001-324231 (2001-11-01), None
patent: 2001-329958 (2001-11-01), None

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