JP2000223249A - Heating and room heating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the infrared radiation emissivity by having a power source of an infrared lamp sealing a carbon substance to be a heating unit connected with lead wires on its both ends and formed in a bar shape into a glass tube so as to guiding the lead wire end part out of the glass tube. SOLUTION: A serially connected heating unit 2 of a bar-shaped carbon substance, an internal molybdenum wire 5, a molybdenum thin plate 6 and an external molybdenum wire 7 are inserted into a glass tube 1, the glass tube 1 is melt-joined at the molybdenum thin plate 6 with an inert gas such as an argon sealed and then an infrared lamp is formed. In this constitution, even if the heating unit 2 is swelled in the longitudinal direction due to high temperature when lit and used, because of existence of a coil-shaped tungsten wire 3 between the heating unit 2 and a metal piece 4, the heating unit 2 slidably moves within the tungsten wire 3, an unnecessary bend force acts and no breakage occurs. The infrared radiation emissivity of the carbon substance of the heating unit 2 is as high as 78-84% so that the infrared radiation emissivity of a heating and room heating device also becomes high.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a heating / heating apparatus using an infrared light bulb as a heat source, and more particularly to a heating apparatus using a carbon-based substance as a heating element and using a more excellent infrared light bulb as a heat source. -It provides a heating device.

[0002]

2. Description of the Related Art Conventionally, as an infrared light bulb used as a heat source for a heating / heating device, a tungsten spiral filament generally held at the center of a glass tube by a plurality of tungsten supports is generally used.

[0003]

However, in a heater as a heat source of a conventional heating / heating apparatus, the infrared emissivity of tungsten is as low as 30 to 39%, and the inrush current is high. In addition, the use of multiple tungsten supports to hold the tungsten spiral filament in the center of the glass tube is not easy to assemble, especially enclosing multiple tungsten spiral filaments for high output. It was difficult to do.

[0004]

In order to solve these problems, the heating / heating device of the present invention uses a rod-shaped infrared light bulb of a carbon-based substance instead of a conventional tungsten spiral filament as a heat source. Things. In this configuration, since the infrared emissivity of the carbon-based material as the heating element for the infrared bulb used in the heating / heating device of the present invention is as high as 78 to 84%, the infrared emissivity as the heating / heating device is also high, In addition, since the carbon-based material has a negative resistance-temperature characteristic in which the resistance value decreases as the temperature rises, a heating / heating device in which the rush current to the infrared light bulb at the time of lighting is reduced can be obtained. It is.

Furthermore, since the rod-shaped carbon-based substance has sufficient rigidity, the rod-shaped carbon-based substance serving as a heating element for the heating / heating device is reduced by a small number of holding means. Because it can be held in the predetermined position of
It is possible to easily obtain an infrared light bulb having a rod-shaped carbon-based substance at a predetermined position for a heating / heating device, and to provide a heating / heating device with improved product performance.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, claims 1 to 8 of the present invention are described.
An embodiment of the invention described in (1) will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a main part of an infrared light bulb used for a heating / heating device according to an embodiment of the present invention, and FIG. 2 is a partially cutaway enlarged view thereof.

In these figures, reference numeral 1 denotes a rod-shaped glass tube made of heat-resistant glass, and 2 denotes a carbon-based substance made of crystallized carbon such as graphite, amorphous carbon, or a mixture thereof, serving as a heating element. For example, a diameter of 0.5
It is formed in a rod-like body having a length of 5 mm and a length of 180 mm. As shown in FIG. 2, a metal wire, for example, a tungsten wire 3 is wound in a coil shape on both ends of the rod-shaped carbon-based material 2 in contact with the rod-shaped carbon-based material 2. Then, a metal piece 4 made of an iron / nickel alloy or the like is fixed to the rod-shaped carbon-based material 2 by caulking from above the coil-shaped tungsten wire 3.

Reference numeral 5 denotes an internal molybdenum wire forming a part of a lead wire, one end of which is fixed to the metal piece 4 by spot welding as shown in FIG. A coil-shaped portion 5a having a diameter substantially equal to the inner diameter of the coil 1 is formed. Further, a molybdenum thin plate 6 is electrically connected to the other end of the internal molybdenum wire 5, and an external molybdenum wire 7 forming a part of a lead wire is connected to the molybdenum thin plate 6.

The rod-like carbon-based material 2, the internal molybdenum wire 5, and the molybdenum thin plate 6
And the external molybdenum wire 7 is inserted into the glass tube 1,
By a conventionally known technique, the glass tube 1 is melt-bonded at the portion of the molybdenum thin plate 6 with an inert gas such as argon or nitrogen sealed therein, thereby forming an infrared light bulb. At this time,
The outer diameter of the coil-shaped portion 5a of the internal molybdenum wire 5 comes into contact with the inner wall of the glass tube 1, and the rigid rod-like carbon-based material 2 is supported at both ends by the coil-shaped portion 5a. , Supported at the center of the interior of the glass tube 1.

In the above configuration, the coiled tungsten wire 3 is interposed between the rod-shaped carbon-based material 2 and the metal piece 4 even if the rod-shaped carbon-based material 2 expands in the longitudinal direction due to high heat during use. Because this rod-shaped carbon-based material 2
Is such that the rod-shaped carbon-based material 2 does not break due to sliding movement in the coil-shaped tungsten wire 3 and unnecessary bending force acting on the rod-shaped carbon-based material 2.

In this embodiment, a tungsten wire having an approximate coefficient of thermal expansion of carbon is used as the metal wire wound around the end of the rod-like carbon-based material 2. May be used instead of the metal wire. Further, in the above-described embodiment, the case where the cross section of the rod-shaped carbon-based material 2 is circular has been described. However, the polygonal shape increases the surface area and can further increase the calorific value.
Further, by forming the polygonal shape, in particular, the flat shape or the triangular cross-sectional shape, it is possible to give directionality to heat generation, and it is possible to configure a highly efficient heating element for a heating / heating device.

FIG. 4 shows an example in which a plurality of rod-like carbon-based substances 2 as heating elements are enclosed in a glass tube 1 in order to obtain stronger heat generation as a heating / heating device. A plurality of rod-like carbon-based materials 2 are integrally fixed by metal pieces 4 in the same manner as described above so that the plurality of rod-shaped carbon-based materials 2 are parallel to each other. By supporting the inner molybdenum wire 5 in the same manner as described above, a plurality of wires can be simultaneously supported.

[0013]

As described above, in the heating / heating apparatus of the present invention, the infrared light bulb as a heat source uses a rod-shaped carbon-based substance instead of the conventional tungsten spiral filament. Has an infrared emissivity of 7
Since it is as high as 8 to 84%, the infrared emissivity as a heating / heating device is also high, and the carbon-based material has a negative resistance-temperature characteristic in which the resistance value decreases as the temperature rises. Inrush current to the infrared bulb at the time can be reduced,
It can contribute to improving product performance and reducing power consumption.

Further, since the carbon-based material formed into a rod shape has sufficient rigidity, the rod-shaped carbon-based material serving as a heating element for the heating / heating device is converted into a glass tube by a small number of holding means. Because it can be held in the predetermined position of
It is possible to easily obtain an infrared light bulb having a rod-shaped carbon-based substance at a predetermined position for a heating / heating device, and to provide a heating / heating device with improved product performance.

In addition, since a plurality of rod-like carbon-based materials can be easily arranged by the small number of holding means, an infrared light bulb having a desired calorific value as a heating / heating device can be easily obtained. It is possible to provide a heating / heating device that can obtain a heating effect according to the application.

Further, by making the shape of the carbon-based material polygonal, the calorific value can be further increased, and a spot heating or a highly efficient heating / heating device can be provided.

Further, by filling an inert gas into the glass tube, it is possible to suppress the deterioration of the carbon-based material, and to greatly improve the life of the heating / heating device.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a heating / heating device according to an embodiment of the present invention.

FIG. 2 is a cutaway enlarged side view of a main part of the heating / heating device.

FIG. 3 is an enlarged perspective view of a main part of the heating / heating device.

FIG. 4 is a perspective view of a main part of a heating / heating device according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Glass tube 2 Heating element 3 Tungsten wire 4 Metal piece 5 Internal molybdenum wire 5a Coiled part 6 Molybdenum thin plate 7 External molybdenum wire

Claims (8)

[Claims] 1. A carbon-based material serving as a heating element formed in a rod shape having lead wires electrically connected to both ends, respectively, is inserted into a glass tube such that an end of the lead wire is led out of the glass tube. A heating and heating device using an enclosed infrared light bulb as a heat source. 2. A metal wire is wound around each end of the rod-shaped carbon-based material in a coil shape, and another metal piece is fixed by caulking so as to cover the coil-shaped metal wire, and the lead is attached to the metal piece. The heating / heating apparatus according to claim 1, wherein an infrared light bulb having one end of the wire electrically fixed is used as a heat source. 3. The heating / heating apparatus according to claim 2, wherein the coil-shaped metal wire is an infrared light bulb which is a tungsten wire as a heat source. 4. The heating / heating apparatus according to claim 1, wherein an infrared light bulb wound in a coil shape having a diameter in contact with the inner wall of the glass tube is used as a heat source in the middle of the lead wire. 5. A plurality of rod-shaped carbon-based materials each having a metal wire wound in a coil shape at both ends, and another metal piece is integrally fixed by caulking so as to cover the coil-shaped metal wire. The heating / heating device according to claim 1, wherein an infrared light bulb having one end of the lead wire electrically fixed to a metal piece is used as a heat source. 6. A heat source is an infrared light bulb having a rod-shaped carbon-based material having a polygonal cross section.
The heating / heating device as described. 7. The heating / heating apparatus according to claim 1, wherein an infrared light bulb using a plurality of said rod-shaped carbon-based substances as a heater is used as a heat source. 8. A rod-shaped carbon-based substance, which is formed into a rod-like shape and having lead wires electrically connected to both ends thereof, is inserted into a glass tube such that an end of the lead wire is led out of the glass tube. A heating / heating device characterized by using an infrared light bulb which is sealed and an inert gas is sealed in the glass tube as a heat source.