Patent ID: 7670121
Filing Date: 2010-03-02
Classification: F01C

Abstract:
1. A fluid machine comprising: a housing having a wall defining a generally spherical interior, said housing having at least one port opening in communication with said interior of said housing; a first shaft mounted for rotation relative to said housing about a primary axis; at least one primary vane disposed within said interior of said housing that rotates about said primary axis of said first shaft; at least one secondary vane disposed within the interior of said housing and mounted to said primary vane on a first pivotal axis, said secondary vane pivotally oscillating between alternating relatively open and closed positions with respect to said primary vane and defining at least a chamber within said housing interior having a volume which varies as said primary vane is rotated about said primary axis; wherein said at least one port opening is adjustable and has a first opening in continuous fluid communication with an approaching closing chamber for flowing incompressible fluids but is changed in size to a second opening for flowing compressible fluids.