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US 4,546,553 AGranted
Radiant wall oven and process of drying coated objects
OwnerWillie H. Bestinventor
Life of this patent
Estimating the term…
Abstract
Radiant curved walls enclose opposite sides of a central heating chamber within which objects to be heated and dried are placed or passed along a path of travel. An insulated outer housing surrounds the radiant walls and defines, therewith, a pair of outer heating chambers. Heaters, carried by the outer housing, heat the air in the outer chamber and impellers in the outer chamber circulate that air so that it heats the radiant walls. Vents at the bottom portions of the radiant walls release air from the outer chamber to the inner chamber and an exhaust fan removes the air from the inner chamber. Radiation from the radiant walls heat and dry the objects, more than one-half the radiation being of a wave length of 5 microns or greater.
Claims23
A radiant oven comprising:
- (a) a housing having opposed side panels and a top panel extending between the upper ends of said side wall panels;
- (b) spaced opposed radiant walls within said housing, said radiant walls being spaced inwardly from said side panels, said radiant walls having inner surfaces curving in opposite directions for defining therebetween a central heating chamber about which both of said wall are curved;
- (c) means connected to said walls for forming outer chambers in which the walls define the inner portions of the outer chambers;
- (d) means for providing, to said outer chambers, heated air for heating the outer surfaces of said walls to operating temperatures at which a majority of the radiant energy is emitted from the inner surfaces of said walls at wave lengths of 5 microns or greater.
1 more element
A radiant oven comprising:
- (a) a housing having opposed side panels and a top panel extending between the upper ends of said side wall panels;
- (b) spaced opposed radiant walls within said housing, said radiant walls being spaced inwardly from said side panels, said radiant walls having inner surfaces curving in opposite directions for defining therebetween a central heating chamber about which both of said walls are curved;
- (c) means connected to said walls for forming outer chambers in which the walls define the inner portions of the outer chambers;
- (d) means for providing, to said outer chambers, heated air for heating the outer surfaces of said walls to operating temperatures at which a majority of the radiant energy is emitted from the inner surfaces of said walls at wave lengths of 5 microns or greater;
- (e) said means for providing said outer chambers with heated air including a plurality of hydrocarbon fired burners, the burners being spaced longitudinally along said inner chamber and fan assemblies mounted on said walls and spaced longitudinally from each other:
- and
- (f) said fan assemblies being intersperced with said burners, each of said fan assemblies having a shaft protuding through its associated side panel, a motor exteriorially of said side panel and drive means connecting said motor to said shaft, the inner end of said shaft terminating between the side panel and the radiant wall, and a fan on the end of said shaft, said fan having radially extending blades and being rotatable by said shaft.
4 more elements
A radiant oven, for heating an object placed within said oven, comprising:
- a housing defining an interior cavity, a radiant wall disposed within said cavity, said radiant wall having a curvature along one dimension thereof and being essentially linear along another dimension thereof whereby the radiant wall along its curved dimension provides a generally convex surface on one side and a generally concaved surface on the other side, means for heating said wall along its convex side, said concaved side defining a side portion of a chamber within said cavity for receiving said object, the curvilinear dimension of said radiant wall being greater than a first linear dimension of said object and the linear dimension of said wall being greater than another dimension of said object in a direction perpendicular to said first dimension and means for moving successive objects to be heated, in a longitudinal path of travel through said chamber and in front of said concaved surface, the linear dimension of said wall being generally parallel to said path of travel.
Process of drying paint on objects comprising:
- arranging a pair of arcuate radiant emitter elements in spaced opposed relationship to each other whereby the inner surfaces of said opposed elements are generally curved about a central chamber in opposite directions, said elements having curvatures such that radiant heat, radiated inwardly from said inner surfaces and perpendicular to the tangent of successive increments of said elements, converge toward a central vertical plane through said central chamber, passing successive objects with wet paint thereon through said chamber along said plane, and heating said elements to a temperature sufficient that radiant energy is emitted from said elements toward said plane and regulating the temperature of the emitter elements so that a majority of the energy emitted from said elements is 5 microns or is emitted at wave lengths of 5 microns or greater.
Dependencies are inferred from the claim text.