Compressor with steel and cast iron sliding materials

Patent metadata

Field	Value
Publication number	US-8939742-B2
Application number	US-201013378609-A
Country	US
Kind code	B2
Filing date	Jun 16, 2010
Priority date	Jun 19, 2009
Publication date	Jan 27, 2015
Grant date	Jan 27, 2015

Abstract

A compressor, characterized in that a steel is used as the base material for the other sliding material vane 10 and nitrided, a CrN or DLC film is formed on the surface by PVD treatment, and a Ni—Cr—Mo cast iron is used for the other corresponding sliding material piston 9 . It is possible in such a configuration to suppress the temperature rise by sliding friction of the sliding materials, such as the vane tip region 10 a and the peripheral region of piston 9 that are vigorously slid, relax decomposition of the refrigerant, and suppress corrosion by hydrogen fluoride generated in reaction with water and oxygen, and thus to provide a compressor higher in reliability.

First claim

The invention claimed is:

1. A compressor, comprising:
a compressing mechanism unit including:
first and second sliding materials in sliding contact,
the first sliding material including a nitrided steel as a base material;
and a CrN or DLC film formed on a surface of the base material by PVD treatment; and

the second sliding material including a Ni—Cr—Mo cast iron;
wherein the compressor uses a refrigerant containing a hydrofluoroolefin having a carbon-carbon double bo…

Assignees

• Nakano Masao
• Iida Noboru
• Karino Tsuyoshi
• Panasonic Ip Man Co Ltd

Inventors

• Nakano Masao
• Iida Noboru
• Karino Tsuyoshi

Classifications

• F04C23/008

  Mechanical Engineering · mapped topic

• F04C2210/26

  Mechanical Engineering · mapped topic

• F01C21/0809

  Mechanical Engineering · mapped topic

• C09K2205/126

  Chemistry & Metallurgy · mapped topic

• F04C2210/263

  Mechanical Engineering · mapped topic