Compressor

Patent metadata

Field	Value
Publication number	US-10550885-B2
Application number	US-201615156418-A
Country	US
Kind code	B2
Filing date	May 17, 2016
Priority date	May 18, 2015
Publication date	Feb 4, 2020
Grant date	Feb 4, 2020

Abstract

A lubricating layer having wear resistance and reliability on the wear resistance, and a compressor including a lubricating layer are provided. The compressor may include a lubricating layer coated on a frictional portion between a rotational shaft and a bearing. The lubricating layer may include at least one metal phase selected from a group consisting of Titanium (Ti); and Copper (Cu), Cobalt (Co), Nickel (Ni), and Zirconium (Zr), and may be a composite structure of amorphous and nanocrystalline materials.

First claim

What is claimed is:

1. A compressor, comprising:
a lubricating layer coated either on a rotational shaft or a bearing configured to rotate relatively with respect to the rotational shaft, wherein the lubricating layer includes:
Titanium (Ti); and
at least one metal phase selected from a group consisting of Copper (Cu), Cobalt (Co), Nickel (Ni), and Zirconium (Zr), wherein the lubricating layer has a composite structure of amorphous and nanocrystalline materials, and wherein an atomic ratio of the Ti and the Cu is Ti:Cu=75.6:24.4 at. % to Ti:Cu=55:45 at. % to form the amorphous material when the lubricating layer includes the Cu, an atomic ratio of the Ti and the Co is Ti:Co=83:17 at. % to Ti:Co=24.2:75.8 at. % to form the amorphous material when the lubricating layer includes the Co, and an atomic ratio of the Ti and the Ni is Ti:Ni=82:18 at. % to Ti:Ni=49:61 at. % to form the amorphous material when the lubricating layer includes the Ni.

2. The compressor of claim 1 , wherein an elastic strain ratio of the amorphous material is above about 1.5%.

3. The compressor of claim 1 , wherein the lubricating layer further includes (CH3)4Si (tetra methyl silane, TMS).

4. The compressor of claim 1 , wherein the lubricating layer further includes Molybdenum (Mo).

5. The compressor of claim 1 , wherein the nanocrystalline material further includes at least one of Nitrogen (N) or Carbon (C), and wherein the N forms Ti nitride along with the Ti, and the C forms Ti carbide along with the Ti.

6. The compressor of claim 5 , wherein the Ti nitride includes TiN, and the Ti carbide includes TiC.

7. The compressor of claim 1 , wherein the nanocrystalline material further includes Nitrogen (N) and Carbon (C), and wherein the N and the C form TiNC along with the Ti.

8. The compressor of claim 1 , wherein a base material coated with the lubricating layer includes at least one of an alloy containing steel, cast iron, aluminium, or an alloy containing magnesium.

9. The compressor of claim 1 , wherein the amorphous and the nanocrystalline materials are sequentially deposited on a base material.

10. A compressor, comprising:
a drive including a rotational shaft;
a compression mechanism, wherein a drive force is transferred by the rotational shaft from the drive to the compression mechanism to compress a refrigerant;
at least one bearing that supports the rotational shaft; and
at least one lubricating layer provided either on the rotational shaft or the at least one bearing configured to rotate relatively with respect to the rotational shaft, wherein the lubricating layer includes:
Titanium (Ti); and
at least one metal phase selected from a group consisting of Copper (Cu), Cobalt (Co), Nickel (Ni), and Zirconium (Zr), and wherein an atomic ratio of the Ti and the Cu is Ti:Cu—75.6:24.4 at. % to Ti:Cu=55:45 at. % to form an amorphous and nanocrystalline material when the lubricating layer includes the Cu, an atomic ratio of the Ti and the Co is Ti:Co=83:17 at. % to Ti:Co=24.2:75.8 at. % to form the amorphous material when the lubricating layer includes the Co, and an atomic ratio of the Ti and the Ni is Ti:Ni=82:18 at. % to Ti:Ni=49:61 at. % to form the amorphous material when the lubricating layer includes the Ni.

11. The compressor of claim 10 , wherein the nanocrystalline material further includes at least one of Nitrogen (N) or Carbon (C), and wherein the N forms Ti nitride along with the Ti, and the C forms Ti carbide along with the Ti.

12. The compressor of claim 10 , wherein the nanocrystalline material further includes Nitrogen (N) and Carbon (C), and wherein the N and the C form TiNC along with the Ti.

13. The compressor of claim 10 , wherein the compressor is a scroll compressor.

14. The compressor of claim 10 , wherein the compressor is a rotary compressor.

Assignees

• Lg Electronics Inc
• Seoul Nat Univ R&Db Foundation
• Seoul National Univ R&D Foundation

Inventors

• Yang Eunsoo
• Sa Bumdong
• Lee Byeongchul
• Park Eunsoo
• RYU Wookha

Classifications

• F25B31/002

  Lubrication · CPC title

• F25B31/026

  with compressor of rotary type · CPC title

• F05C2203/083

  Nitrides · CPC title

• F05C2253/08

  Crystalline · CPC title

• F04C2230/91

  Coating · CPC title