Heating appliance with combustion air preheat

Details Heating appliance with combustion air preheat Heating appliance with combustion air preheat

1989-01-27

1990-05-29

Bennet, Henry A.

Combustion

Heated line section feeds flame holder

Distinct exhaust products line heats feed line

126 91A, F23D 1144

Patent

active

049291734

ABSTRACT:
A heating appliance particularly for a drier of a web of material comprising a combustion unit having a burner and a combustion chamber. The combustion chamber consists of an elongated first section extending away from the burner and merging into a second portion via a bend of 180.degree. said two portions defining an U-shaped path for the combustion gases and being approximately of equal lengths. The combustion chamber also being provided with one or more discharge openings for discharging part of the combustion gases, said opening(s) being controllable by means of a valve.

REFERENCES:
patent: 3923449 (1975-12-01), Brock
patent: 4038022 (1977-07-01), Blackman
patent: 4140467 (1979-02-01), Ellison et al.
patent: 4508501 (1989-04-01), Kuhn

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