ROTARY COMPRESSOR
First Claim
1. A rotary compressor in whicha single refrigerant of hydrofluoroolefin having a double bond of carbon or a mixed refrigerant containing the hydrofluoroolefin is used, the rotary compressor comprising:
- a compression chamber for compressing the refrigerant; and
a first compression-chamber oil feed path for feeding refrigerating machine oil to the compression chamber after the refrigerant has been enclosed therein.
3 Assignments
0 Petitions
Accused Products
Abstract
A refrigerant being low in both ODP and GWP and containing at least hydrofluoroolefin having a double bond of carbon is used. By providing a first compression-chamber oil feed path for feeding refrigerating machine oil to a compression chamber 15 after the refrigerant has been enclosed therein, effects on the global environment can be suppressed and moreover temperature increases of the refrigerant due to re-expansion heating and feeding of high-temperature refrigerating machine oil can be suppressed, i.e., decomposition of the refrigerant can be inhibited.
6 Citations
9 Claims
-
1. A rotary compressor in which
a single refrigerant of hydrofluoroolefin having a double bond of carbon or a mixed refrigerant containing the hydrofluoroolefin is used, the rotary compressor comprising: -
a compression chamber for compressing the refrigerant; and a first compression-chamber oil feed path for feeding refrigerating machine oil to the compression chamber after the refrigerant has been enclosed therein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
Specification