询盘专利名称：Helical screw rotary compressor for air conditioning system having improved oil
management
发明人：David N. Shaw,Clifford T. Bulkley
申请号：US06/513182
申请日：19830712
eba
什么是谓语公开号：US04478054A上海口译
公开日：
queen什么意思
19841023
2011艾美奖专利内容由知识产权出版社提供
chloe zhao摘要：A helical screw rotary compressor for a clod loop refrigeration system such as an air conditioning system for a bus or like vehicle is connected in ries with a condenr and an evaporator, in that order, with the evaporator at a raid position relative to the compressor and utilizes a vaporizable refrigerant which is miscible with a lubricating oil employed to lubricate the moving components of the screw compressor. The bus engine driven, clutch operated, helical screw rotors are mounted within parallel intercting bores within the compressor housing. A slide valve underlies the intermeshed rotors and forms a portion of the screw compressor envelope, the rotors opening to a suction port connected to the outlet side of the evaporator above the rotors. A high pressure discharge port at one end of the intermeshed rotors leads to an auxiliary chamber bearing an unload cylinder which drives the slide valve and which opens at the top to a housing discharge port leading to the condenr. An oil parator is interpod within the auxiliary chamber above the unload cylinder. An oil drain passage leads from the auxiliary chamber to an oversized oil sump within the housing beneath the rotors. The slide valve slides in a recess within the casing underlying the rotors. On the
pirate bay
sinosure
suction port side of the recess, a further drain passage leads through a drainage check valve to the sump. This structural arrangement permits all condend refrigerant and the oil to return by gravity flow to the oil sump who capacity is at least 1.5 times the volume of the normal oil charge for the system. Condend refrigerant miscible in the oil and the oil entraining the refrigerant, upon compressor shut down, accumulates in the sump but does not reach the intermeshed rotors and thus prevents clutch burnout by liquid locking during initiation of compressor operation with the clutch mechanically connecting the engine to the intermeshed helical screw rotors.
申请人：DUNHAM-BUSH, INC.
代理机构：Sughrue, Mion, Zinn, Macpeak & Seas
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