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Patent Searching and Data


Title:
IMPROVED REFRIGERATION DEVICE WITH IMPROVED DC MOTOR
Document Type and Number:
WIPO Patent Application WO2005119137
Kind Code:
A3
Abstract:
A miniature cooling device (100) includes numerous improvements capable of increasing the reliability and useful lifetime of the device, as well as improving electrical power to cooling power conversion efficiency. The improvements include a unitary DC motor shaft design (102) that incorporates a unitary mass flywheel (314) into the shaft element (300) and provides a solid shaft cross-section (302) for increasing magnetic flux density in the DC motor. Additional improvements include a bend resistant flexible vane (114) in the DC motor to compression piston drive coupler (806), reduced dead space volume within the compression cylinder (818), improved heat dissipation by a cylinder head cover (1300) and an athermalized compressor design that provides uniformly efficient operation over a wide range of operating temperatures. Further improvements include fabrication and coating improvements that increase the life of compression piston and compression cylinder wear surfaces.

Inventors:
BIN-NUN URI (US)
MANITAKOS DANIEL L (US)
Application Number:
US2005013661W
Publication Date:
April 27, 2006
Filing Date:
April 21, 2005
Export Citation:
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Assignee:
FLIR SYSTEMS INC
BIN-NUN, URI
MANITAKOS, DANIEL, L.
International Classes:
F25B1/00; F25B27/00; F25B31/00; H02K1/00; H02K1/27; H02K3/00; H02K7/02; H02K19/26; H02K21/00; H02K23/40; F25B9/14; (IPC1-7): F25B9/00; H02K31/00
Foreign References:
US20050000213A12005-01-06
US5865091A1999-02-02
US20030184176A12003-10-02
US20040145265A12004-07-29
US4769997A1988-09-13
US6230498B12001-05-15
US6076358A2000-06-20
US5056317A1991-10-15
US4979368A1990-12-25
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