US 12,474,096 B2
Refrigeration cycle device
Hinoki Ishii, Tokyo (JP)
Assigned to Mitsubishi Electric Corporation, Tokyo (JP)
Appl. No. 18/257,011
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Mar. 3, 2021, PCT No. PCT/JP2021/008056
§ 371(c)(1), (2) Date Jun. 12, 2023,
PCT Pub. No. WO2022/185427, PCT Pub. Date Sep. 9, 2022.
Prior Publication US 2024/0044554 A1, Feb. 8, 2024
Int. Cl. F25B 41/20 (2021.01); F25B 13/00 (2006.01)
CPC F25B 41/20 (2021.01) [F25B 13/00 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A refrigeration cycle device comprising:
a first refrigerant circuit in which a compressor, a condenser, an internal heat exchanger, a first pressure-reducing device, and an evaporator are annularly connected;
a second refrigerant circuit configured to branch from a branch portion of the first refrigerant circuit and merge with a merging portion of the first refrigerant circuit on a suction side of the compressor via the internal heat exchanger; and
a pressure releaser provided between the branch portion and the internal heat exchanger in the second refrigerant circuit,
wherein the pressure releaser is configured to release refrigerant to an atmosphere adjacent to the refrigeration cycle device in response to a physical parameter of refrigerant passing through the second refrigerant circuit reaching a threshold value.