초록 ▼

Lubrication deficiencies related to the use of lubricants in HFC refrigeration compressors can be mitigated by providing a diamond-like-carbon coating on a member subject to wear due to lubrication deficiencies. Specifically, the tip of the vane of a rotary compressor is coated with a diamond-like-c

Lubrication deficiencies related to the use of lubricants in HFC refrigeration compressors can be mitigated by providing a diamond-like-carbon coating on a member subject to wear due to lubrication deficiencies. Specifically, the tip of the vane of a rotary compressor is coated with a diamond-like-carbon coating made up of alternating layers of tungsten carbide and a lubricious material 0.5 to 5.0 microns thick.

대표청구항 ▼

[ What is claimed is:] [1.] An improved rotary compressor for compressing HFC refrigerant which is lubricated by a synthetic lubricant, said rotary compressor having pump means including a piston rollably disposed within a bore of a cylinder and a vane having a tip coacting with said piston, the imp

[ What is claimed is:] [1.] An improved rotary compressor for compressing HFC refrigerant which is lubricated by a synthetic lubricant, said rotary compressor having pump means including a piston rollably disposed within a bore of a cylinder and a vane having a tip coacting with said piston, the improvement comprising:said tip having a diamond-like-carbon coating thereon made up of a series of alternating hard and lubricious layers whereby the coefficient of friction between said tip and said piston is reduced and said tip has reduced wear even in the absence of sufficient lubricant as compared to a tip without said diamond-like-coating.