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Title:
COOLING MEDIUM COMPRESSOR
Document Type and Number:
Japanese Patent JP2004166400
Kind Code:
A
Abstract:

To provide a cooling medium compressor that does not require a rotor to be magnetized in advance, can perform magnetization while assembling a stator and the rotor even in the course of assembling a compressor, and does not crucially damage a winding wire due to a high voltage and a current even in the magnetization.

The cooling medium compressor houses a fluid compression mechanism 1 and a DC brushless motor 22 that drives the fluid compression mechanism 1 via a rotating drive shaft 4 in a sealed vessel 5. The DC brushless motor 22 comprises a permanent magnet 2b at the rotor 2, and the winding wire with its external periphery coated with an insulating coating at the stator 3. The film thickness of the insulating coating of the winding wire is set to a prescribed film thickness that is sustainable in motor life over a prescribed service life even if the winding wire is energized in magnetizing the rotor.


Inventors:
ISHIZONO FUMIHIKO
MATSUKI TETSUZO
KOSONE NOBUNORI
ISHIGAKI TAKASHI
Application Number:
JP2002329343A
Publication Date:
June 10, 2004
Filing Date:
November 13, 2002
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
F04B39/00; F04C29/00; H02K3/30; H02K3/32; H02K15/03; (IPC1-7): H02K3/32; F04B39/00; F04C29/00; H02K3/30
Attorney, Agent or Firm:
Kaneo Miyata
Yahei Takase