Pulse combustion apparatus

F - Mech Eng,Light,Heat,Weapons – 23 – C

Patent

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158/34

F23C 15/00 (2006.01)

Patent

CA 1122513

ABSTRACT OF THE DISCLOSURE A pulse combustion heater is described and includes a housing, a combustion chamber within the housing having an inlet and an outlet, means for omitting successive fuel charges to the chamber through said in- let, ignition means operable to initiate combustion in the chamber, and an exhaust system. The exhaust system includes a primary exhaust pipe having first and second ends and coupled to the combustion chamber at its first end so as to extend generally tangentially from the com- bustion chamber. The primary exhaust pipe is of a length selected so that combustion of gases is substantially complete before the gases leave the pipe. The system also includes a manifold having an inlet to which the second end of the primary exhaust is coupled, and a plurality of outlets spaced around the manifold. A corresponding plurality of heat exchange coils is pro- vided. Each coil is in the form of a hollow tube shaped to define a helix of substantially constant diameter extending about a longitudinal axis and having an inlet coupled to one of the manifold outlets, and an outlet. The coils are arranged around the manifold with their longitudinal axes generally parallel to one another. A heat exchange chamber is provided in the housing and contains the heat exchange coils, the chamber having an inlet and an outlet for fluid to be heated. An exhaust chamber is also provided in the housing and communicates with the outlets of the heat exchange coils and has an outlet for exhaust gases.

383194

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