Pumps – Expansible chamber type – Having pumping chamber pressure responsive distributor
Reexamination Certificate
2007-12-05
2011-12-20
Won, Bumsuk (Department: 2889)
Pumps
Expansible chamber type
Having pumping chamber pressure responsive distributor
Reexamination Certificate
active
08079837
ABSTRACT:
Compressor (1) having a region of pressure intermediate between discharge pressure and suction pressure (especially, crank chamber (10)), characterized in that a valve mechanism (21) is provided for introducing discharge gas into the region of intermediate pressure so as to render constant the difference between intermediate pressure and suction pressure. A compressor structure is provided which can stably introduce a mixture of discharge gas and refrigerating machine oil into the crank chamber without using pressure reducing means such as an aperture and in a manner easy to form a passageway, thereby improving the lubricity of rolling part and slide part in the crank chamber.
REFERENCES:
patent: 2004100563 (2009-04-01), None
Baker & Botts L.L.P.
Lee Brenitra
Sanden Corporation
Won Bumsuk
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