F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
F04B 39/12 (2006.01) F04B 49/035 (2006.01) F04B 49/24 (2006.01) F25B 31/02 (2006.01)
Patent
CA 2131149
A compressor assembly is disclosed including a compressor mechanism mounted within a hermetically sealed housing. A cylinder block assembly, containing a plurality of reciprocating pistons within compression chambers, is covered by cylinder heads. The compression chambers include a discharge valve which permits compressed refrigerant to empty into a common discharge chamber. A pressure relief mechanism, formed by cylinder heads yieldably attached to the crankcase, is included within the compressor to eliminate damage caused by high pressure conditions such as slugging. Alternatively, pressure relief may be created in the common discharge chamber by a yieldably attached cage bearing or a valved port.
Cette invention concerne un compresseur à mécanisme monté à l'intérieur d'un corps scellé hermétiquement. Un bloc-cylindres renfermant une pluralité de pistons alternatifs est couvert par une culasse. Les chambres de compression comportent une soupape de refoulement qui permet au frigorigène de passer dans un collecteur de refoulement. L'objet de l'invention comporte un mécanisme de limitation de surpression prenant la forme de culasses assemblées au carter par des moyens élastiques et servant à prévenir l'endommagement par surpression, notamment par des coups de bélier. La limitation de surpression peut aussi être assurée par un disque frangible ou une soupape dans le collecteur de refoulement.
Fry Emanuel D.
Kandpal Tara C.
Mccarthy Tetrault Llp
Tecumseh Products Company
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