Nozzle apparatus for airborne paper web dryers

Details Nozzle apparatus for airborne paper web dryers Nozzle apparatus for airborne paper web dryers

1978-08-14

1981-02-03

Schwartz, Larry I.

Drying and gas or vapor contact with solids

Apparatus

Rotary drums or receptacles

34160, 226 97, 239DIG7, F26B 1320

Patent

active

042479932

ABSTRACT:
Nozzle apparatus for airborne paper web dryers of the non-impingement or underpressure type including a blow box member defined by top web supporting and bottom wall portions and back and front wall portions. The front and top supporting wall portions are interconnected by a curved guide surface and an upwardly directed nozzle is provided on the front wall portion spaced below the entry edge plane of the guide surface. The relative values of the width of the nozzle gap and the radius of curvature of the curved guide surface are such that the gas flow exiting from the nozzle follows a portion of the guide surface and departs therefrom prior to the exit edge plane of the guide surface. The upper surface of the top supporting wall of the blow box defines a small angle with the running plane of the web.

REFERENCES:
patent: 3587177 (1971-06-01), Overly et al.
patent: 3650043 (1972-03-01), Overly et al.
patent: 3873013 (1975-03-01), Stibbe
patent: 3982327 (1976-09-01), Kurie et al.

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