Hussmann Corporation

Chiao M Lee

Doron Shapiro

Norman E Street

Sean M Hanlon

Doron Shaprio

Normann E Street

A refrigerated merchandiser including a case defining a product display area configured to support product, a refrigeration circuit in which a refrigerant circulates, and a dilution device coupled to the refrigeration circuit. The dilution device includes a valve assembly and a container supporting a pressurized fluid. The valve assembly is in fluid communication with the refrigeration circuit and is selectively variable to an open state to fluidly couple the container to the refrigeration circuit such that the fluid is discharged into the refrigeration circuit in response to a condition of the refrigeration circuit reaching or exceeding a predetermined threshold value.

Refrigeration system and dilution device for a merchandiser

A modular refrigeration system includes a refrigeration loop having a compressor, a condenser, an expansion assembly, and a chiller interconnected by a first piping loop cycling hydrocarbon refrigerant. A high side cooling loop includes a first heat exchanger and a first pump interconnected with the condenser by a second piping loop cycling a cooling fluid, the cooling fluid exchanges heat with the hydrocarbon refrigerant at the condenser. A low side cooling loop includes a second heat exchanger and a second pump interconnected with the chiller by a third piping loop cycling a chilled fluid, the chilled fluid exchanges heat with the hydrocarbon refrigerant at the chiller. A space supports the second heat exchanger and is configured to be maintained within a predetermined temperature range, wherein the total charge of hydrocarbon refrigerant associated with the space does not exceed 150 grams.

Modular low charge hydrocarbon refrigeration system and method of operation

A refrigeration system including a plurality of circuits that have one or more heat exchangers providing heat exchange relationship relative to one or more of the other circuits. At least one of the circuits circulates a hydrocarbon refrigerant and includes a chiller unit or a merchandiser that has an evaporator.

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St. Charles, MO, United States of America

Chiao M Lee