Patent ID: 8362388

Claim:
A multi-gas mixer, comprising: a mixer chamber, comprising: a plurality of gas inlets, respectively coupled to pipelines to various gas containers for providing gas to produce a gas mixture; at least one clockwise or counter-clockwise gas rotating and mixing unit or a combination of clockwise and counter-clockwise gas rotating and mixing units, disposed in the mixer chamber, so that a plurality of gas rotating and mixing channels, disposed on the periphery of each clockwise or counter-clockwise gas rotating and mixing unit or disposed on the periphery of each of the combination of clockwise and counter-clockwise gas rotating and mixing units, are oriented to produce a spiral gas flow with axial motion along a symmetric axis of the mixer chamber and enclosed by the inner wall of the mixer chamber to achieve an uniform gas mixture with an arbitrary percentage of each gas; and a gas mixture outlet along the symmetric axis of the mixer chamber to provide a high-speed gas flow after the gas mixture is exhausted from the mixer chamber.