MULTI-TEMPERATURE AIR CONDITIONING SYSTEM, CONTROL METHOD THEREOF AND TRANSPORT REFRIGERATION VEHICLE

The present application provides a multi-temperature air conditioning system 100, a control method thereof and a transport refrigeration vehicle. The multi-temperature air conditioning system 100 comprises: an outdoor unit 130; a first indoor unit 110; and a second indoor unit 120; wherein the outdoor unit 130 has a number of first four-way valves 132 corresponding to the number of the first indoor units 110, and a number of second four-way valves 133 corresponding to the number of the second indoor units 120; and wherein a section flow path 140 which could be connected or disconnected is further included, which connects the first indoor unit 110 between a first throttling element 112 and a first on-off valve 113, and connects the second indoor unit 120 between a second throttling element 122 and the second on-off valve 123. The multi-temperature air conditioning system 100 according to the present application, by arranging the first indoor unit 110 and the second indoor unit 120 which are connected with the outdoor unit 130 respectively, and by arranging the section flow path 140 between the first indoor unit 110 and the second indoor unit 120, achieves the interconnection between the three, so that it is possible to realize cooling and heating control for the first indoor unit 110 and the second indoor unit 120 in different zones.