Refrigerating apparatus having a fluid compressor

Details Refrigerating apparatus having a fluid compressor Refrigerating apparatus having a fluid compressor

1995-12-08

1998-07-14

Harvey, Jack B.

Pumps

Condition responsive control of pump drive motor

By control of electric or magnetic drive motor

418220, F04B 4906

Patent

active

057794502

ABSTRACT:
A fluid compressor has a sealed case, an electric motor section, and a compression section. Both sections are provided in the sealed case, with their axes extending substantially horizontally. The sealed case is filled with lubricant. At the start of the compressor, the rotational speed N of the electric motor section is gradually increased, but maintained at least once at a prescribed value for a predetermined period. At the stop of the compressor, the rotational speed N is gradually decreased, but maintained at least once at a prescribed value for a predetermined period.

REFERENCES:
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patent: 5090874 (1992-02-01), Aikawa et al.
patent: 5350992 (1994-09-01), Colter
patent: 5360326 (1994-11-01), Okuda et al.
patent: 5518373 (1996-05-01), Takagi et al.

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