US 12,305,897 B2
Air conditioning system with multi-temperature zone, control method therefor and transport refrigeration vehicle
Kun Chen, Shanghai (CN); and Linhui Chen, Shanghai (CN)
Assigned to CARRIER CORPORATION, Palm Beach Gardens, FL (US)
Filed by Carrier Corporation, Palm Beach Gardens, FL (US)
Filed on Jan. 24, 2023, as Appl. No. 18/158,864.
Claims priority of application No. 202210092233.3 (CN), filed on Jan. 26, 2022.
Prior Publication US 2023/0235931 A1, Jul. 27, 2023
Int. Cl. F25B 41/26 (2021.01); B60H 1/32 (2006.01); F25B 13/00 (2006.01); F25B 40/02 (2006.01); F25B 41/24 (2021.01); B60H 1/00 (2006.01); B60P 3/20 (2006.01)
CPC F25B 41/26 (2021.01) [B60H 1/3228 (2019.05); B60H 1/323 (2013.01); B60H 1/3232 (2013.01); F25B 13/00 (2013.01); F25B 40/02 (2013.01); F25B 41/24 (2021.01); B60H 1/00907 (2013.01); B60H 2001/00935 (2013.01); B60P 3/20 (2013.01); F25B 2313/023 (2013.01); F25B 2313/02742 (2013.01); F25B 2400/0403 (2013.01); F25B 2400/0409 (2013.01); F25B 2400/0411 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A multi-temperature air conditioning system, comprising:
an outdoor unit, in which a compressor, a first four-way valve, a second four-way valve and an outdoor heat exchanger connected through pipelines are arranged;
a first indoor unit, in which a first indoor heat exchanger, a first throttling element and a first on-off valve are respectively arranged, wherein a first end of the first indoor heat exchanger is connected to the outdoor heat exchanger through the first throttling element and the first on-off valve, and a second end of the first indoor heat exchanger is connected to the compressor through the first four-way valve; and
a second indoor unit, in which a second indoor heat exchanger, a second throttling element and a second on-off valve are respectively arranged, wherein a first end of the second indoor heat exchanger is connected to the outdoor heat exchanger through the second throttling element and the second on-off valve, and a second end of the second indoor heat exchanger is connected to the compressor through the second four-way valve;
wherein the first four-way valve is respectively connected to a gas inlet of the compressor, the outdoor heat exchanger, the first indoor heat exchanger, and is capable of being connected to or disconnected from a gas outlet of the compressor; the second four-way valve is respectively connected to the gas inlet of the compressor, the outdoor heat exchanger, the second indoor heat exchanger, and is capable of being connected to or disconnected from the gas outlet of the compressor; and
wherein a section flow path capable of being connected or disconnected is further included, wherein the section flow path connects to the first indoor unit between the first throttling element and the first on-off valve, and the section flow path connects to the second indoor unit between the second throttling element and the second on-off valve.