Importance

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Abstract

A gas mixer includes: an inner pipe through which a first gas passes; an outer pipe covering an outer periphery of the inner pipe to form a storage space between the inner pipe and the outer pipe; a supply pipe to supply a second gas to the storage space; and a guide pipe disposed in an interior of the inner pipe and through which at least the first gas passes, and the inner pipe is formed with first introduction holes to introduce the second gas stored in the storage space into a guide space defined between the guide pipe and the inner pipe. With the gas mixer, distributions of concentration, temperature, and flow speed can be made uniform, pressure loss can be low, and high mixing performance can be maintained even with variation of the flow rate or flow speed of gases to be mixed.

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First Claim