Claims
- 1. A hermetically sealed rotary compressor comprising:
- a generally cylindrical sealed vessel having an oil reservoir defined therein;
- a drive unit housed within said sealed vessel and including a drive motor and a crankshaft operably coupled with said drive motor;
- a compressor mechanism housed within said sealed vessel, said compressor mechanism comprising a cylinder having a compression compartment defined therein and also having upper and lower openings, an eccentric cam fixed for rotation with said crankshaft, and a ring-shaped piston encircling said eccentric cam and capable of undergoing a planetary motion in contact with said eccentric cam during rotation of said eccentric cam, said cylinder also having a refrigerant intake port defined therein in communication with said compression compartment;
- upper and lower bearing plates closing said upper and lower openings of said cylinder, respectively;
- a radial vane radially slidably accommodated in said cylinder, said radial vane having a radial inner end held in sliding contact with an outer peripheral surface of said ring-shaped piston; and
- an oil supply passage formed in said lower bearing plate and having first and second ends, a first portion of said oil supply passage adjacent said first end thereof extending in a radial direction, and said second end of said oil supply passage being connected to a portion of said compression compartment adjacent said refrigerant intake port.
- 2. The hermetically sealed rotary compressor as claimed in claim 1, wherein
- an orifice is disposed in said oil supply passage.
- 3. The hermetically sealed rotary compressor as claimed in claim 1, wherein
- an oil supply space is defined in said lower bearing, and an oil supply port opens into said space; and
- said first end of said oil supply passage opens into said space and communicates with said oil supply port.
- 4. The hermetically sealed rotary compressor as claimed in claim 1, wherein
- said radial vane divides said compression compartment into low and high pressure chambers defined on leading and trailing sides of said radial vane with respect to a rotation direction of said crankshaft; and
- said refrigerant intake port opens into said low pressure chamber.
Priority Claims (2)
Number |
Date |
Country |
Kind |
5-321648 |
Dec 1993 |
JPX |
|
6-250416 |
Oct 1994 |
JPX |
|
Parent Case Info
This is a Rule 60 Divisional application of parent application Ser. No. 08/359,656 filed Dec. 20, 1994 U.S. Pat. No. 5,545,02.
US Referenced Citations (7)
Foreign Referenced Citations (4)
Number |
Date |
Country |
47-22035 |
Jun 1972 |
JPX |
57-173589 |
Oct 1982 |
JPX |
59-136596 |
Aug 1984 |
JPX |
3246392 |
Nov 1991 |
JPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
359656 |
Dec 1994 |
|