Patent ID: 9103210
Filing Date: 2015-08-11
Classification: F01B,F01C

Abstract:
1. A rotary device comprising first and second rotors disposed adjacent each other and rotatable about substantially parallel axes of rotation, wherein: (i) each of the first and second rotors has protrusions extending therefrom at regular intervals about the circumference of each to define an open portion of a sealable compression chamber between adjacent protrusions, the open portion bounded by a chamber surface defined by two side surfaces and a rotor surface joining said two side surfaces; (ii) each of said protrusions has two side surfaces and a projecting end surface, wherein the meeting point between each of said two side surfaces and the projecting end surface defines a tip; and (iii) the first and second rotors are arranged such that upon contra rotation of the rotors, two tips of a first protrusion of the first rotors engages with a chamber surface between a pair of protrusions on the second rotor, and the two tips of the first protrusion are both in constant sealing contact with said chamber surface of the second rotor for a first period of time so as to form a sealed chamber between the end surface of the first protrusion of the first rotor and the chamber surface of the second rotor to execute a chamber stroke, during which first period of time the volume of the chamber is reduced to a minimum volume level by the contra rotation; wherein, rotation of motion of the first and second rotors upon contra rotation causes at least one of: (a) prior to sealing of a sealable compression chamber to form the sealed chamber; ambient pressure is received within the sealable compression chamber; or (b) gas within the sealed chamber evacuates directly to ambient atmosphere at the end of the chamber stroke.