| 摘要 |
1463989 Heating induction air or exhaust gases J EBERSPACHER 20 Feb 1974 [6 March 1973] 7694/74 Heading FIB [Also in Division F4] Apparatus for heating a gas (e.g. exhaust gas from an I.C. engine before it is fed to a catalytic reactor or air for feeding a diesel engine) comprises inlet and outlet conduits 2, 6 an intermediate conduit 8 defining an annular chamber 1 and a tapered transition conduit 15 enclosing a space 56 in communication with the annular chamber 1, a burner 58 with a tubular portion 3 defining a combustion chamber 60 which communicates with the annular chamber 1, and an arcuate baffle 7 with an angular extent of from 60 degrees to 120 degrees lying in a plane perpendicular to the axes of said conduits and located at the junction between the conduits 8 and 15 in the region where the tubular portion 3 of the burner 58 is connected to the conduit 8. The combustion gases from the burner flow round the annular chamber 1 to heat the inlet conduit 2, then enter the space 56 where they mix with the gas supplied to the inlet conduit 2 before flowing to the outlet conduit 6. Fuel is supplied via conduit 11 and primary air via an air connection 14 to a mixing nozzle 5 from which air-fuel mixture emerges into the combustion chamber 60 to be ignited by a device, e.g. a spark-plug (not shown), located in a connection socket 9, secondary air is supplied to the combustion chamber 60 tangentially via a conduit 4. A control conduit 10 is provided with a thermostat communicating with passage 61 to regulate the starting and stopping of the appar atus in dependence upon the temperature of the gases leaving the conduit 6. The fuel from conduit 11 is fed through a passage 70, Fig. 4 (not shown) to be atomized by an atomizing ring 18 and mixed with the primary air from connection 14 which is supplied via sleeve 17. |
