Multiple stage orbiting ring rotary compressor

Rotary expansible chamber devices – Multistage – One working chamber stage encircles another

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Details

418 11, 418 59, 62509, F04C 2344, F04C 2300

Patent

active

051353687

ABSTRACT:
A gas compressor includes a housing defining a compression chamber, a crankshaft having an eccentric surface radially offset from the axis of rotation of the crankshaft, an orbiting ring rotatably mounted on the eccentric for rotation about an axis offset from the shaft axis, a cylindrical post coaxial with the axis of the housing passages for carrying gas to and from the compression chamber, vanes movable radially with respect to the orbiting ring, and pressure sensitive valves that open exhaust passages from the compression chamber. The orbiting ring rotates in continual contact with the inner surface of the housing and the outer surface of the cylindrical post. Compression occurs within a first stage space and a second stage space, each space divided into compression chambers by the sliding vanes and contact between the ring and post or between the ring and housing. An intermediate pressure chamber is located in one end of the housing and this chamber can be configured to allow for intercooling of the refrigerant. It is also possible to provide gas separation of the discharge gas and return the separated gas to the intermediate chamber for improved efficiency of the compressor.

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