Hot-gas producing apparatus for shrinking plastic foils

Details Hot-gas producing apparatus for shrinking plastic foils Hot-gas producing apparatus for shrinking plastic foils

1982-05-10

1984-09-11

Dority, Jr., Carroll B.

Heating

Heat generator heats gas or liquid material in a flow structure

Material heated by mixing with combustion products of generator

431158, 431285, 431351, F24H 100

Patent

active

044708076

ABSTRACT:
The invention concerns an apparatus for producing a hot gas to shrink plastic foils, with at least one burner mounted in a housing provided with a discharge nozzle for the hot gas. To better control the hot-gas temperature and hence the temperature of shrinking, the apparatus is provided with such a burner arrangement that the hot-gas jet (9 or 10) leaving the burner (7 or 8) is directed at an angle to the discharge flow defined by the discharge nozzle (6) and with a jet-deflection means for the hot-gas jet (9 or 10) before the discharge nozzle (6).
In a preferred embodiment the jet deflection is implemented by a jet (17) of cold air by means of which the hot-gas jet (9 or 10) is simultaneously directed and cooled. In a preferred mode, the pressure and the flow rate of the cold-air jet (17) are controlled.

REFERENCES:
patent: 3217779 (1965-11-01), Reed et al.
patent: 3529917 (1970-09-01), Hindenlang
patent: 4155700 (1979-05-01), Babington

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