TEMPERATURE-CONTROLLED CABINET WITH QUICK-CONNECT COMPRESSOR-CONDENSER ASSEMBLY
Disclosed and described here are example temperature-controlled display cabinets having an interior conditioned space and a refrigeration circuit communicably coupled to a controller and charged with a refrigerant. The refrigeration circuit includes a compressor-condenser assembly removably coupled to the refrigeration circuit and/or temperature-controlled display cabinet. An evaporator is operably coupled to the refrigeration circuit, the evaporator is positioned at a bottom surface of the temperature-controlled display cabinet, and the compressor-condenser assembly is removably coupled to a top surface of the temperature-controlled display cabinet. Methods of installing temperature-controlled display cabinet with a charge of A3 refrigerant utilize disconnect fittings coupling the compressor-condenser assembly with the refrigeration circuit are further disclosed.
1 . A refrigeration system comprising:
a display cabinet comprising a conditioned space; and
a refrigeration circuit configured to receive an A3 refrigerant, wherein the refrigeration circuit comprises:
a compressor-condenser assembly comprising:
a compressor comprising a compressor input and a first disconnect fitting coupling the compressor input to the refrigeration circuit; and
a condenser comprising a condenser output and a second disconnect fitting coupling the condenser output to the refrigeration circuit;
wherein the compressor-condenser assembly is configured to be removably coupled to the refrigeration circuit.
2 . The refrigeration system of claim 1 , wherein the compressor-condenser assembly and the refrigeration circuit comprise a full charge of the A3 refrigerant.
3 . The refrigeration system of claim 1 , wherein the compressor-condenser assembly is removably coupled to the display cabinet.
4 . The refrigeration system of claim 1 , wherein at least one of the first and the second disconnect fittings is a double shut-off quick disconnect fitting.
5 . The refrigeration system of claim 4 , wherein the first and the second disconnect fittings are double shut-off quick disconnect fittings.
6 . The refrigeration system of claim 1 , wherein the refrigeration circuit further comprises a suction line and a capillary tube configured to minimize a dimension of a liquid line.
7 . The refrigeration system of claim 6 , wherein the compressor input is communicably coupled to the suction line via the first disconnect fitting.
8 . The refrigeration system of any one of claim 6 , wherein the condenser output is communicably coupled to the capillary tube.
9 . The refrigeration system of claim 1 , further comprising at least one evaporator.
10 . The refrigeration system of claim 9 , wherein the evaporator is configured to be positioned at a bottom surface of the display cabinet.
11 . The refrigeration system of claim 10 , wherein the compressor-condenser assembly is configured to be positioned at a top surface of the display cabinet opposite the bottom surface.
12 . The refrigeration system of claim 9 , wherein the compressor-condenser assembly is configured to be positioned at a top surface of the display cabinet, and the evaporator is configured to be positioned at a bottom surface of the display cabinet opposite the top surface.
13 . The refrigeration system of any one of claim 6 , wherein at least a portion of the suction line and at least a portion of the capillary tube are thermally coupled.
14 . The refrigeration system of claim 13 , wherein the portion of the suction line and the portion of the capillary tube are adjacent to or coupled to a heat exchanger.
15 . The refrigeration system of claim 9 , wherein the evaporator is positioned within the conditioned space and the condenser is positioned exterior to the conditioned space.
16 . The refrigeration system claim 1 , wherein the A3 refrigerant has a Global Warming Potential (GWP) value less than 10.
17 . The refrigeration system of claim 1 , wherein the refrigeration system further comprises a maximum charge of 5.3 ounces (150 grams) of the A3 refrigerant per compressor.
18 . The refrigeration system of claim 1 , wherein the A3 refrigerant comprises propane.
19 . A temperature controlled display cabinet comprising:
a conditioned space configured for temperature control; and
at least a portion of a refrigeration circuit containing a charge of an A3 refrigerant, the refrigeration circuit comprising:
a suction line having a first end and a second end;
a first disconnect fitting coupled to the first end of the suction line, the first disconnect fitting configured to operably couple to a compressor input;
a capillary tube having a first end and a second end; and
a second disconnect fitting coupled to the first end of the capillary tube, the second disconnect fitting configured to operably couple to a condenser output.
20 . The temperature controlled display cabinet of claim 19 , wherein the temperature controlled display cabinet is configured to operably couple to a compressor-condenser assembly, the compressor-condenser assembly comprising:
a compressor comprising the compressor input; and
a condenser comprising the condenser output.
21 . The temperature controlled display cabinet of claim 19 , wherein the compressor-condenser assembly is configured to be coupled to the display cabinet and the refrigeration circuit.
22 . The temperature controlled display cabinet of claim 19 , wherein the A3 refrigerant comprises a maximum charge of 5.3 ounces (150 grams) per compressor.
23 . The temperature controlled display cabinet of claim 19 , wherein the refrigerant comprises propane.