Title:
圧縮機モータを冷却する装置及び方法
Document Type and Number:
Japanese Patent JP4860759
Kind Code:
B2
Abstract:
Apparatus and methods are provided for cooling motors used to drive gas and air compressors. In particular, the cooling of hermetic and semi-hermetic motors is accomplished by a gas sweep using a gas source located in the low-pressure side of a gas compression circuit. The gas sweep is provided by the creation of a pressure reduction at the compressor inlet sufficient to draw uncompressed gas through a motor housing, across the motor, and out of the housing for return to the suction assembly. The pressure reduction is created by means provided in the suction assembly, such as a nozzle and gap assembly, or alternatively a venturi, located upstream of the compressor inlet. Additional motor cooling can be provided by circulating liquid or another cooling fluid through a cooling jacket in the motor housing portion adjacent the motor.
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Inventors:
De Lamina, Paul Marie
Application Number:
JP2009543221A
Publication Date:
January 25, 2012
Filing Date:
December 20, 2007
Export Citation:
Assignee:
Johnson Controls Technology Company
International Classes:
F04B39/06; F04B39/12
Domestic Patent References:
| JP2000230760A | 2000-08-22 | |||
| JPS391081Y1 | ||||
| JP2000045991A | 2000-02-15 |
Attorney, Agent or Firm:
Shinjiro Ono
Kazuo Shamoto
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Fujihiro Kanda
Kazuo Shamoto
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Fujihiro Kanda