US 12,297,832 B2
Compressor with chromium nitride and titanium nitride layers
Norihisa Watanabe, Fuji (JP); and Shohei Atobe, Fuji (JP)
Assigned to Carrier Japan Corporation, Tokyo (JP)
Filed by Carrier Japan Corporation, Tokyo (JP)
Filed on Feb. 29, 2024, as Appl. No. 18/591,117.
Application 18/591,117 is a continuation of application No. PCT/JP2021/032110, filed on Sep. 1, 2021.
Prior Publication US 2024/0200556 A1, Jun. 20, 2024
Int. Cl. F04C 18/356 (2006.01); F04C 29/00 (2006.01)
CPC F04C 18/356 (2013.01) [F04C 29/00 (2013.01); F04C 2230/91 (2013.01); F05C 2201/0406 (2013.01); F05C 2201/0412 (2013.01); F05C 2203/0813 (2013.01); F05C 2203/083 (2013.01); F05C 2203/0847 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A compressor comprising a compression mechanism part that compresses a refrigerant in a sealed container, wherein
the compression mechanism part includes a first member and a second member which slidingly move relative to each other,
the first member has a chromium layer and a nitride layer formed on a base member surface in this order,
the nitride layer includes CrN and TiN,
carbide is deposited on a surface of the second member, and
a region having CrN greater than TiN and a region having TiN greater than CrN are alternately present in a thickness direction of the nitride layer.