F - Mech Eng,Light,Heat,Weapons – 27 – B
Patent
F - Mech Eng,Light,Heat,Weapons
27
B
158/47, 34/7
F27B 9/28 (2006.01) D21F 5/18 (2006.01) D21F 7/00 (2006.01) F26B 23/02 (2006.01)
Patent
CA 1240139
ABSTRACT OF THE DISCLOSURE A novel drying system is provided herein. The system includes means for moving a web along a path extending through a drying station. The drying station includes a plurality of elongated drying means, each extending transverse to the path of movement of the web each of the drying means being arranged at spaced intervals along the path of the moving web, each of the drying means comprising side-by-side dryer sections having heating means arranged to be heated by a flame sustained by an air/gas mixture. A gas supply and a first combustion air supply are provided, along with an air/gas mixing chamber for each dryer section for communicating with the air supply and with the gas supply for mixing air and gas entering the air/gas mixing chamber and for delivering the air/gas mixture to the heating means of each dryer section. Means are provided for igniting the air/gas mixture to heat each of the drying sections, Regulating means are provided for selectively controlling the air/gas mixture entering each air/gas mixing chamber, whereby the heat intensity of the drying sections are regulated between a high intensity level and a low intensity level selectively to control the amount of drying experienced across the moving web by each drying means. In this way, maximum drying for each longitudinal web section is obtained when the drying section of all of the drying means associated with the longitudinal section of the web are controlled to provide a high intensity heating and incrementally to reduce the total amount of drying for each longitudinal section by selectively operating the regulating means associated with each drying section.
443192
Roth Reinhold C.
Terra Richard C.
Borden Ladner Gervais Llp
Krieger Corporation
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