Abstract: A trailer refrigeration system comprising: an electricity generator (22); an electricity-generator engine (21) for driving the electricity generator (22); a converter (23) for converting ac electric power generated by the electricity generator (22) into dc electric power; an inverter (24, 25, 26) including inverters (24), (25), (26) each for converting dc electric power from the converter (23) into ac electric power; a refrigerant circuit (30) having an electric compressor (31) and a fan (35, 36) including fans (35), (36), the electric compressor (31), the fan (35), and the fan (36) being driven respectively by ac electric power from inverters (24), (25), (26); and a control means (40) for individually controlling the speed of rotation of the electric compressor (31), the fan (35), and the fan (36).

Abstract: An engine unit (U1) containing an electricity generator (22), an electricity-generator engine (21), and a console panel (29) is mounted in the lower part of a trailer. A refrigeration equipment unit (U2) containing a converter (23), inverters (24, 25, 26), and a refrigerant circuit (30) is mounted in the ceiling part of a refrigeration storage compartment (C). The engine unit (U1) and the refrigeration equipment unit (U2) are connected together by electric wiring.

Abstract: A trailer refrigeration system comprising: an electricity generator (22); an electricity-generator engine (21) for driving the electricity generator (22); a converter (23) for converting ac electric power generated by the electricity generator (22) into dc electric power; an inverter (24, 25, 26) including inverters (24), (25), (26) each for converting dc electric power from the converter (23) into ac electric power; a refrigerant circuit (30) having an electric compressor (31) and a fan (35, 36) including fans (35), (36), the electric compressor (31), the fan (35), and the fan (36) being driven respectively by ac electric power from inverters (24), (25), (26); and a control means (40) for individually controlling the speed of rotation of the electric compressor (31), the fan (35), and the fan (36).

Abstract: An outdoor unit (1), a parent unit (2), a plurality of child freezers, and a plurality of child refrigerators are provided. The child freezers are disposed in individual frozen display cases, while the child refrigerators are disposed in individual refrigerated display cases. A refrigerant heat exchanger (5) is disposed in only the parent unit (2). The outdoor unit (1) and the refrigerant heat exchanger (5) form a primary refrigerant circuit. A secondary refrigerant circuit is provided in the parent unit (2). Refrigerant circulates through the secondary refrigerant circuit, passing through the refrigerant heat exchanger (5). Each child freezer is provided with a refrigeration utilization side heat exchanger (3c) and the heat exchanger (3c) and the refrigerant heat exchanger (5) form a secondary refrigerant circuit through which refrigerant circulates.