Reciprocatory piston type compressor with a rotary valve

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

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F04B 27/10 (2006.01)

Patent

CA 2077979

A reciprocatory piston type compressor having an axial cylinder block in which a plurality of axial cylinder bores are formed for receiving pistons therein to compress a refrigerant and to discharge the compressed refrigerant, housings air-tightly connected to the opposite ends of the axial cylinder block to define a suction chamber for the refrigerant before compression, a discharge chamber for the refrigerant after compression, and a chamber for receiving a swash plate accommodated piston reciprocating mechanism operated by a rotatable drive shaft axially extended through the chamber, and a rotary valve element arranged so as to be rotated together with the drive shaft and having a fluid passageway for controlling the supply of the refrigerant from the suction chamber to the respective cylinder bores in response to rotation thereof. The rotary valve element may also have another fluid passageway for controlling the discharge of the compressed refrigerant from the cylinder bores to the discharge chamber in response to rotation thereof.

Compresseur à piston alternatif comportant un bloc-cylindres dans lequel sont formés une pluralité de cylindres axiaux recevant les pistons pour comprimer un frigorigène et refouler le frigorigène comprimé, des carters raccordés aux extrémités opposées du bloc-cylindres axial de façon étanche à l'air de manière à définir une chambre d'aspiration pour le frigorigène avant compression, une chambre de refoulement pour le frigorigène après compression, et une chambre pour mécanisme alternatif de piston à plateau incliné actionné par un arbre d'entraînement tournant s'étendant axialement dans la chambre, et une soupape tournante arrangée de manière à tourner solidairement avec l'arbre d'entraînement et comportant un passage de fluide pour commander l'acheminement du frigorigène de la chambre d'aspiration aux cylindres respectifs en réaction à leur rotation. La soupape tournante peut aussi avoir un autre passage de fluide pour commander le refoulement du frigorigène comprimé des cylindres à la chambre de refoulement en réaction à leur rotation.

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