IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0950905
(1978-10-12)
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발명자
/ 주소 |
- Shaw David N. (Unionville CT)
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출원인 / 주소 |
- Dunham-Bush, Inc. (West Hartford CT 02)
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인용정보 |
피인용 횟수 :
11 인용 특허 :
1 |
초록
▼
A compression module in the form of a four cylinder reciprocating piston compressor, having two cylinders for each of two cylinder heads, is interconnected by conduits and manifolds which in turn incorporate solenoid operated control valves and check valves to provide five pressure levels for the co
A compression module in the form of a four cylinder reciprocating piston compressor, having two cylinders for each of two cylinder heads, is interconnected by conduits and manifolds which in turn incorporate solenoid operated control valves and check valves to provide five pressure levels for the compressor cylinders to remove automatically intermediate pressure refrigerant and to return intermediate pressure refrigerant, to achieve single or multiple cylinder compressor staging, and effect unloading of one head by cutting off low pressure suction return to that compressor head. The multiple cylinder, multiple level, automatic staging, reciprocating piston compression module is particularly applicable to a refrigeration system employing common, discharge, suction, liquid drain and liquid feed manifolds, with flow controlled by suitable solenoid operated control valves and check valves and for use in systems including subcooler and accumulator coils and for a heat pump; an outside air coil, a thermal energy storage/direct solar energy heat supply coil, an inside space heating and cooling coil and a high pressure condenser, hot water coil.
대표청구항
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A refrigeration system for conditioning a confined space, said system comprising: a first, inside heat exchanger coil within said space, a second, outside heat exchange coil exterior of said space, a third heat exchange coil exterior of said space and functioning to supply heat to the system or to s
A refrigeration system for conditioning a confined space, said system comprising: a first, inside heat exchanger coil within said space, a second, outside heat exchange coil exterior of said space, a third heat exchange coil exterior of said space and functioning to supply heat to the system or to store heat derived therefrom, a fourth heat exchange coil functioning as a system high temperature condenser for supplying a high temperature heating load, a compressor, conduit means carrying refrigerant and connecting said coils and said compressor in a closed refrigeration loop circuit and including means for selectively causing said coils to function as evaporators or condensers, with said coils functioning dependent upon temperature parameters as high pressure condenser, intermediate pressure condenser, low pressure evaporator and intermediate pressure evaporator, a subcooler within said circuit, said subcooler including a subcooling heat exchange coil for subcooling condensed refrigerant from any of said first, second, third and fourth coils functioning as a condenser, the improvement comprising: said compressor comprising a first and a second cylinder head, and first, second, third and fourth cylinders, said first cylinder head including said first and said second cylinders, said second cylinder head including said third and said fourth cylinders, said first cylinder head including first manifold means separating said first and said second cylinders and defining low pressure and high pressure sides for said respective cylinders, said second cylinder head comprising second manifold means defining commonly, low and high pressure sides for both said third and said fourth cylinders, said first cylinder head including a first inlet to the low pressure side of said first cylinder and a second inlet to the low pressure side of said second cylinder, said second cylinder head comprising a third inlet, said third inlet being common to the low pressure side of said third and said fourth cylinders, said first cylinder head comprising a first outlet for said first cylinder and a second outlet for said second cylinder, said second cylinder head comprising a third outlet, said third outlet being common to said third and said fourth cylinders, said conduit means further including: a common outlet manifold, means connecting said first outlet to said common outlet manifold and means connecting said third outlet to said common outlet manifold, means including a first flow control valve for selectively connecting said common outlet manifold to said second inlet, means for connecting said second outlet to one of said coils functioning as the system high pressure condenser, means for connecting said common outlet manifold to said coil functioning as said system high pressure condenser in parallel with said second outlet connecting means and including first check valve means for preventing flow from said second outlet back to said common outlet manifold, and second check valve means between said common outlet manifold and said third outlet, such that said coil functioning as the system high pressure condenser may receive first stage compressor discharge from all four cylinders through said first, second and third outlets; from said first and second outlets alone with said third and fourth cylinders supplying refrigerant to one of said coils functioning as the system intermediate pressure condenser; from said first and second outlets alone with said third outlet connected to said second inlet upon opening of said flow control valve with said first and second cylinders discharging in second stage, and from said second outlet alone with said first, third and fourth cylinders functioning in first stage compression and feeding to the second inlet through said flow control valve.
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