IR heating lamp array with reflectors modified by removal of segments thereof
AssigneeEdison Welding Institute, Inc.
InventorRobert A. Grimm
Life of this patent
Estimating the term…
Abstract
Conventional infrared, spot reflector lamps are modified by removing portions of the reflector to form reflector edges and then placing the reflector edges next to each other to form an array of lamps with a wide variety of configurations. The combined lamps are particularly effective when the filaments of each lamp are oriented in the same direction as that of a desired heating line. Maximum energy flux density is achieved by positioning the lamps at a distance of about twice the focal length of the uncut, spot-focused lamps. By removing segments from the reflectors to form edges that define planes that are parallel to or intersect with each other, various shaped reflectors are formed that are used to assemble arrays that provide uniform heating lines of various shapes.
Claims21
A heating method comprising:
- a) providing a first infrared lamp with a first elongate filament and a first reflector with a first focal length focusing to a first focal point;
- b) providing a second infrared lamp with a second elongate filament and a second reflector with a second focal length focusing to a second focal point;
- c) forming a first reflector first edge by removing a segment of said first reflector;
- d) forming a second reflector first edge by removing a segment of said second reflector;
- e) juxtaposing said first reflector first edge with said second reflector first edge one to the next;
- f) positioning said first elongate filament and said second elongate filament substantially parallel to a work piece heating line;
- g) positioning a work piece at a distance of about twice said first focal length from said first infrared lamp and at a distance of about twice said second focal length from said second infrared lamp;
- and
- h) applying a potential difference to said first filament and said second filament.
A heating device comprising:
- a) a first infrared lamp having a first elongate filament and a first reflector with said first reflector having a segment removed therefrom to form a first reflector first edge;
- b) a second infrared lamp having a second elongate filament and a second reflector with a segment removed therefrom to form a second reflector first edge with said first edge of said first reflector and said first edge of said second reflector juxtaposed one to the next with said first elongate filament and said second elongate filament substantially parallel to a line passing through the centers of said lamps.
A heating device comprising:
- a) a first infrared lamp having a first reflector with a first focal length and focusing to a first focal point with said first reflector having a segment removed therefrom to form a first reflector first edge;
- b) a second infrared lamp having a second reflector with a second focal length and focusing to a second focal point with a segment removed therefrom to form a second reflector first edge with said first reflector first edge and said second reflector first edge juxtaposed one to the next.
Dependencies are inferred from the claim text.