US 12,253,288 B2
Refrigeration cycle apparatus
Kumiko Saeki, Osaka (JP); Yuta Iyoshi, Osaka (JP); and Yoshiki Yamanoi, Osaka (JP)
Assigned to DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed on Mar. 29, 2024, as Appl. No. 18/621,723.
Application 18/621,723 is a continuation of application No. PCT/JP2022/035462, filed on Sep. 22, 2022.
Claims priority of application No. 2021-161998 (JP), filed on Sep. 30, 2021.
Prior Publication US 2024/0240841 A1, Jul. 18, 2024
Int. Cl. F25B 41/26 (2021.01); F25B 13/00 (2006.01)
CPC F25B 41/26 (2021.01) [F25B 13/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A refrigeration cycle apparatus comprising:
a refrigerant circuit including a refrigerant vessel that reserves a refrigerant;
a flow path switching portion that includes
a first connecting portion,
a second connecting portion,
a third connecting portion connected to the refrigerant vessel, and
a flow path switching valve that switches between a first state in which the third connecting portion communicates with the first connecting portion and a second state in which the third connecting portion communicates with the second connecting portion; and
a safety valve that includes a fourth connecting portion connected to the first connecting portion or the second connecting portion and releases the refrigerant to outside when a refrigerant pressure in the refrigerant vessel satisfies a predetermined condition,
wherein at least the fourth connecting portion of the safety valve is made of stainless steel, and
in the flow path switching portion,
a potential difference between the first connecting portion and the fourth connecting portion is 0.35 V or less,
a potential difference between the second connecting portion and the fourth connecting portion is 0.35 V or less,
an allowable tensile stress of the fourth connecting portion with respect to an allowable tensile stress of the first connecting portion is 3.0 times or less, and
the allowable tensile stress of the fourth connecting portion with respect to an allowable tensile stress of the second connecting portion is 3.0 times or less.