Single and double-ended compressors

F - Mech Eng,Light,Heat,Weapons – 25 – B

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F25B 1/02 (2006.01) F04B 35/04 (2006.01) F04B 39/02 (2006.01) F25B 31/02 (2006.01)

Patent

CA 2344852

A double-ended refrigerant compressor (30) consists of a pair of opposed compressors (10a) each of which has a hollow piston (14, 14a) that is driven by an armature (13, 13a) under the influence of electrical coils (12, 12a) to compress refrigerant in the chambers (15, 15a). The armatures (13, 13a) have oil slingers (31) to splash oil from the sump (17, 17a) to the pistons (14, 14a) and chambers (15, 15a). A cap (41) may be fitted over the inlet end of the pistons (14, 14a) to minimise oil loss.

Cette invention se rapporte à un compresseur de réfrigérant à double extrémité (30) qui est constitué par une paire de compresseurs opposés (10a) comportant chacun un piston creux (14, 14a) mû par une armature (13, 13a) sous l'action de bobines électriques (12, 12a) de façon à comprimer le réfrigérant dans les chambres (15, 15a). Les armatures (13, 13a) comportent des déflecteurs d'huile (31) destinés à projeter l'huile du carter d'huile (17, 17a) vers les pistons (14, 14a) et vers les chambres (15, 15a). Un obturateur (41) peut être adapté sur l'extrémité d'entrée des pistons (14, 14a) pour réduire les pertes d'huile au minimum.

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