Motor driven fluid compressor

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

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F04C 18/00 (2006.01) F04C 18/02 (2006.01) F04C 23/00 (2006.01)

Patent

CA 2081411

A hermetic type scroll compressor includes a hermetically sealed compressor housing formed by first and second cup-shaped casings. A cylindrical housing portion is disposed between the first and second cup-shaped casings and has an annular inner block extending inwardly therefrom. The inner block divides the interior of the compressor into a first chamber in which the drive mechanism is housed and a second chamber in which the compression mechanism is housed. At one end, the drive shaft is supported by the inner block through bearings, and at the its other end, the drive shaft is supported by an annular projection extending from and integral with the second cup-shaped casing. Additionally, the stator is fixedly secured to the second cup-shaped casing. A gas passage, which allows the outer diameter of the compressor to be reduced, extends through the inner block to provide fluid communication between the first and second chambers.

Compresseur à volute hermétique comprenant une enveloppe hermétique formée par le premier et le deuxième carters en forme d'entonnoir. Une partie cylindrique de l'enveloppe est placée entre le premier et le deuxième carters en forme d'entonnoir et comprend un bloc interne annulaire se prolongeant vers l'intérieur. Le bloc interne divise l'intérieur du compresseur en une première chambre, qui loge le mécanisme d'entraînement, et une deuxième chambre, qui loge le mécanisme de compression. € une extrémité, l'arbre d'entraînement est supporté par le bloc interne sur des paliers et à son autre extrémité il est supporté par une projection annulaire prolongeant le deuxième carter en forme d'entonnoir et faisant partie intégrante de celui-ci. De plus, le stator est fixé solidement au deuxième carter en forme d'entonnoir. Un passage de gaz, qui permet de réduire le diamètre externe du compresseur, traverse le bloc interne et permet le transfert de fluide entre la première et la deuxième chambres.

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