초록 ▼

A refrigerant fluid accumulator and charging apparatus for vapor-compression refrigeration systems comprising a pressure vessel having an interior liquid/vapor separation chamber, a liquid reservoir, a refrigerant inlet conduit, a primary refrigerant vapor outlet conduit and a secondary refrigerant

A refrigerant fluid accumulator and charging apparatus for vapor-compression refrigeration systems comprising a pressure vessel having an interior liquid/vapor separation chamber, a liquid reservoir, a refrigerant inlet conduit, a primary refrigerant vapor outlet conduit and a secondary refrigerant outlet conduit in communication with a sump portion of the reservoir and with the primary outlet conduit. The secondary refrigerant outlet conduit includes a sight glass for observation of the flow of fluid from the sump into the compressor suction line. Refrigeration systems may be accurately charged with refrigerant fluid by operating the system at design load conditions with the accumulator and charging apparatus interposed in the refrigerant circuit between the evaporator and the compressor and by venting refrigerant fluid from the system until the flow of fluid through the secondary outlet conduit changes from liquid or mixed phase to substantially the vapor phase.

대표청구항 ▼

Apparatus adapted to be interposed in a vapor-compression refrigeration system including a compressor, a condenser, a refrigerant expansion device, an evaporator and conduit means interconnecting said compressor and said evaporator, said apparatus being adapted to minimize ingestion of liquid refrig

Apparatus adapted to be interposed in a vapor-compression refrigeration system including a compressor, a condenser, a refrigerant expansion device, an evaporator and conduit means interconnecting said compressor and said evaporator, said apparatus being adapted to minimize ingestion of liquid refrigerant into said compressor and to provide for charging said system with sufficient refrigerant fluid prior to entry into said compressor, said apparatus comprising: a closed pressure vessel defining an interior chamber, said chamber including a portion forming a reservoir for collecting liquid refrigerant being circulated through said system, an inlet conduit in communication with said chamber and adapted to be connected to said conduit means downstream of said evaporator, a primary outlet conduit in communication with said chamber above said reservoir and adapted to be connected to a refrigerant fluid suction line leading to said compressor, a secondary outlet conduit in communication with said reservoir and said suction line to said compressor, said secondary outlet conduit including means for limiting the flow of refrigerant fluid from said reservoir through said secondary outlet conduit; means for determining the phase condition of refrigerant fluid flowing through said secondary outlet conduit; and valve means on said vessel for admitting refrigerant fluid to and venting refrigerant fluid from said vessel for adjusting the phase condition of refrigerant fluid flowing through said secondary outlet conduit during steady state operation of said system.