Miniature rotary compressor, and methods related thereto

F - Mech Eng,Light,Heat,Weapons – 04 – B

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F04B 35/04 (2006.01)

Patent

CA 2588256

Disclosed is a rolling piston rotary compressor for use with primary refrigerants that is miniaturized for portable and mobile applications for which size and weight are often crucial. The miniature rotary compressor comprises a compressor mechanism, a brushless DC motor and a casing. The compressor mechanism comprises, a cylinder, a shaft having an eccentric part, one or more bearings to support the shaft, a roller, a vane, an oil sump, openings for communicating with lubricant oil and refrigerant, and inlet and discharge ports. The compressor mechanism and the motor are housed in a hermetically sealed or semi-hermetically sealed casing. The configuration and design of the present invention allow the realization of an ultralight miniature compressor. The miniature rotary compressor provides a higher power density and comparable efficiency as compared to state-of-the-art refrigerant- based rotary compressors. Also disclosed are methods of manufacturing the miniature rotary compressor.

L'invention concerne un compresseur rotatif à piston tournant utilisé avec des réfrigérants primaires que l'on a miniaturisé aux fins d'applications mobiles et portables où la taille et le poids sont souvent cruciaux. Le compresseur rotatif miniature comprend un mécanisme compresseur, un moteur à CC sans collecteur et un caisson. Le mécanisme compresseur comprend un cylindre, un arbre ayant une partie excentrique, un ou plusieurs paliers pour supporter l'arbre, un roulement, un volet mobile, un carter d'huile, des ouvertures de communication avec l'huile lubrifiante et le réfrigérant, ainsi que des ports d'admission et d'évacuation. Le mécanisme compresseur et le moteur sont logés dans un caisson hermétiquement ou à moitié hermétiquement fermé. La configuration et la conception selon l'invention permettent de réaliser un compresseur miniature ultra-léger. Le compresseur rotatif miniature produit une densité de puissance supérieure et un rendement comparable par rapport aux compresseurs rotatifs à base de réfrigérants de la technique actuelle. L'invention concerne enfin des procédés de fabrication dudit compresseur rotatif miniature.

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