US 12,392,341 B2
Compressor
Noriaki Arashi, Tokyo (JP); Ichiro Yogo, Tokyo (JP); and Yuki Ichise, Tokyo (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD., Tokyo (JP)
Appl. No. 18/852,562
Filed by MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD., Tokyo (JP)
PCT Filed Apr. 21, 2023, PCT No. PCT/JP2023/015913
§ 371(c)(1), (2) Date Sep. 30, 2024,
PCT Pub. No. WO2023/204301, PCT Pub. Date Oct. 26, 2023.
Claims priority of application No. 2022-070173 (JP), filed on Apr. 21, 2022.
Prior Publication US 2025/0101982 A1, Mar. 27, 2025
Int. Cl. F04C 27/00 (2006.01); F04C 29/02 (2006.01)
CPC F04C 27/001 (2013.01) [F04C 29/02 (2013.01); F04C 2210/26 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A compressor comprising:
a cylindrical main case surrounding a compression mechanism about an axis, the compression mechanism being configured to compress a refrigerant;
a sub-case closing an opening of the main case in a direction of the axis, fitted to an inner circumferential face or an outer circumferential face of the main case, and defining a space between the main case and the sub-case, the refrigerant being introduced to the space;
an annular first seal member provided about the axis at a facing portion where the main case and the sub-case fitted to each other face each other in a plane; and
an annular second seal member provided about the axis in the facing portion,
wherein the first seal member is provided at a position closer to a starting point on the space side of the facing portion than the second seal member,
wherein the first seal member has better refrigerant resistance and/or oil resistance than the second seal member, and
wherein the second seal member has better sealing performance than the first seal member at a temperature of −20° C. or lower.