Refrigerant compressor and freezer including same
US10914010B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2017 |
| Grant date | Feb 9, 2021 |
| Priority date | — |
| Expiry date | Nov 27, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05C2201/0436
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A refrigerant compressor includes: an electric component; and a compression component driven by the electric component to compress a refrigerant. At least one sliding member constituting the compression component is made of a base material (185) that is an iron-based material. An abrasion resistance film (180) including a surface layer constituted by at least fine crystals is formed on a sliding surface of the sliding member. The surface layer (181) includes an A portion in which a component contained most is diiron trioxide (Fe2O3). The A portion exists within a range of at least 0.3 μm or less from an outermost surface of the sliding surface. The abrasion resistance film (180) may include at least one intermediate layer (182 to 184) located between the surface layer (181) and the base material (185). With this, self-abrasion resistance of the sliding member can be improved, so that the refrigerant compressor having excellent reliability and efficiency can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.