Piston assembly for reducing the temperature of a compressor...

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

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F04B 39/06 (2006.01)

Patent

CA 2403306

A piston assembly for a compressor that reduces the temperature experienced by a compressor cup seal during operation. The piston assembly includes a piston sleeve (16) having a top portion and an interior. A valve plate (14) is supported by the top of the piston sleeve. A compressor head (10) includes a compressor head plate (12), which is offset from the valve plate (14). The offset between the compressor head plate (12) and the valve plate (14) defines a cooling chamber (32). The interior of the piston sleeve (16) communicates with the interior of the compressor head (10) via openings (24, 30) defined in the valve plate (14) and the compressor head plate openings (24, 26) and conduit (34, 35) associated with these openings and traversing the cooling chamber (32).

La présente invention concerne un ensemble à piston destiné à un compresseur, permettant de réduite la température à laquelle est soumise une coupelle d'étanchéité de compresseur durant le fonctionnement. L'ensemble à piston comprend une gaine de piston (16) ayant une partie supérieure et une zone interne. Une plaque à soupape (14) est supportée par la partie supérieure de la gaine de piston. Une tête de compresseur (10) comprend une plaque de tête de compresseur (12) qui est décalée par rapport à la plaque à soupape (14). Le décalage entre la plaque de tête de compresseur (12) et la plaque à soupape (14) défini un compartiment de refroidissement (32). La zone interne de la gaine de piston (16) communique avec la zone interne de la tête de compresseur (10) par l'intermédiaire d'ouvertures (24, 30) définies dans la plaque à soupape (14) et les ouvertures de plaque de tête de compresseur (24, 46) et les conduits (34, 35) associés à ces ouvertures et traversant le compartiment de refroidissement (32).

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