JPS6010313Y2 - infrared heating furnace - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an infrared heating furnace using an infrared lamp as a heat source.

The applicant of this application has previously developed a heating furnace of this type, which is equipped with a central workpiece in a furnace chamber, an annular infrared lamp surrounding the workpiece, and an annular reflective surface around the outer circumference of the workpiece, which reflects the infrared rays emitted by the lamp. We have proposed a type in which the lamp is reflected by a surface and concentratedly acts on the workpiece, but in this case, when the annular lamp is composed of one continuous lamp, the terminals at both ends must be close to each other. It is easy to cause problems such as short circuits.

The purpose of the present invention is to obtain a heating furnace that does not have the above disadvantages.Inside the furnace chamber 1, there is a central workpiece 2, an annular infrared lamp 3 surrounding the workpiece, and an annular infrared lamp 3 surrounding the workpiece 2. In the lamp 3 having a reflective surface 4, the lamp 3 is divided into at least two halves 3a, 3a, and each half 3a is extended outward at both ends 3b, 3b. Is each terminal 3C on this? It is equipped with 3C.

In the illustrated example, the furnace chamber 1 has a cylindrical shape as a whole,
An annular lamp 3 and an annular reflective surface 4 are arranged in two rows, upper and lower, inside the lamp, and transparent windows 7 are formed above and below the center of the lamp, and the workpiece 2 is passed through the windows into the furnace chamber. I made it so that it would appear within 1 hour.

Each reflective surface 4 has an elliptical cross section, and the lamp 3 is positioned on one focal point and the workpiece 2 is positioned on the other focal point, so that the infrared rays emitted by the lamp 3 are The light was reflected and concentrated at approximately one point on the workpiece 2.

Further, in the illustrated example, each annular infrared lamp 3 is divided into semicircular left and right halves 3a, 3a, and both ends 3b, 3b of each half 3a are extended to the outside of the periphery to form each half. Side cover 8. I made it face within δ.

In the drawings, reference numerals 9 and 9 indicate terminal plates inside each cover 8 and 8, and 10 and 10 indicate a conductor outlet on the upper surface thereof.

Further, each half portion 3a is stably supported by three-point support, that is, both ends 3b are connected to respective grooves 5 in the side wall of the furnace chamber 1.
, 5 to be supported, and a protrusion 3d is provided on the outer surface of the intermediate portion thereof, and this is fitted and supported in the hole 6 in the intermediate portion of the side wall, thus providing three-point support. It is now positioned stably.

In this way, according to the present invention, the annular infrared lamp 3 is divided into at least two halves 3a, 3a, and each half 3a is extended to the outside of the circumference at both ends 3b, 3b. The device is equipped with terminals 3c, 3c, and since the terminals 3c, 3c are located in a relationship separated from each other, there is no risk of short circuit, etc., and the effect is that the use is safe.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway plan view of the heating furnace of the present invention, and FIG. 2 is a cross-sectional view taken along the line 1--2. 1...Furnace chamber, 2...Workpiece, 3...
...Infrared lamp, 3a, 3a...Both halves,
3b, 3b...both ends, 3c, 3c...
・Both terminals, 4... Reflective surface.

Claims (1)

[Claims for Utility Model Registration] 1. In a type that includes a central workpiece 2 in a furnace chamber 1, an annular infrared lamp 3 surrounding the workpiece, and an annular reflective surface 4 on the outer periphery, the lamp 3 is divided into at least two halves 3a, 3a, and each half 3a
An infrared heating furnace which extends outward at both ends 3b, 3b and is provided with respective terminals 3cv3c. 2. Each half 3a is fitted at both end portions 3b, 3b into the left and right grooves 5.5 formed in advance on the side wall of the furnace chamber 1, and a protrusion 3d is provided on the outer surface of the intermediate portion. The infrared heating furnace according to claim 1, which is a utility model registration, is fitted into an intermediate hole 6 formed in advance in the side wall.