Patent ID: 9724662
Date: 2017-08-08
CPC Classifications: B01F,G01N

Claim:
1. An exhaust gas mixer that mixes target gas containing exhaust gas and diluent gas to form diluted exhaust gas, the exhaust gas mixer comprising: a mixer main body having an inner circumferential surface defining a hollow part extending in an axial direction, and configured to mix target gas containing exhaust gas and diluent gas; an inner pipe part disposed in the hollow part along the axial direction, and passing through and projecting away from a closed end of the mixer main body, wherein a central axis of the inner pipe part and a central axis of the hollow part are disposed in different positions; a gas introduction part configured to introduce the target gas into a space between the mixer main body and the inner pipe part; a guide plate disposed within the hollow part at an inner end part of a connecting part between the mixer main body and the gas introduction part, tilted toward an outer end part of the connecting part, and configured to guide the target gas exiting the gas introduction part toward the outer end part at the inner circumferential surface to promote spiraling of the target gas in the space; and a gas lead-out part disposed in the inner pipe part to lead out the diluted exhaust gas that has been mixed by the spiraling.