JPS6317317A - Electric stove - Google Patents

Abstract

PURPOSE:To provide a reflection type electric stove for use in radiating a gradual and appropriate infrared rays in a wide range by a method wherein reflector plate for use in reflecting radiation heat from a quartz heater unit and a plurality of heat- resistant plates arranged substantially at a right angle in respect to a lateral direction of the quartz heater unit are spaced apart by a specified distance. CONSTITUTION:A vertical quartz type heater unit 11 is fixed to a reflector plate 12 having a parabolic surface with the heater unit being placed at its focal point by a reflection plate holder 15. A plurality of hard heat-resistance U-shaped plates surrounding an outer frame of a main body are fixed by a plate holder 18 in a properly spaced-apart relation. As the vertical heater unit 11 is energized, the heater unit is red heated to radiate a radiation heat and the heat is concentrated in one direction with the reflection plate 12 having a parabolic surface with the vertical heater unit 11 being placed at its focal point and then radiated. The plates 17 are heated by radiation heat and the plates 17 themselves may radiate the radiation heat. The plates 17 are arranged move widely than the radiation heat radiating surfaces of the vertical heater unit 11, entire plates 17 are heated by the conductive heat and the radiating radiation heat is applied from an entire wide surface of the plates 17.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electric stove having an electric heater such as a vertical quartz tube and a parabolic reflector.

BACKGROUND OF THE INVENTION Conventionally, electric heaters of this type have had structures as shown in FIGS. 3 and 4. In the figure, reference numeral 2 denotes a reflector, and a quartz tube type heater unit 1 is provided at approximately the focal point F of the parabola drawn by the reflector 2. This heater unit 1 has end caps 3 on both ends, is attached to a reflector holder 6 that holds a reflector 2, and is fixed, and these are held by an outer shell 4 of the main body with an opening at the front of the heater unit 1 and held by a spacer 6. There is. A protective net 7 is made of wire to ensure safety so that children do not come into direct contact with the heater unit 1, and to prevent the heater unit 1 itself from being damaged by direct external force.

The operation of the electric stove configured as above will be explained below. First, when the heater unit 1 is energized, the heating wire inside becomes red-hot and emits infrared rays. This infrared ray is then reflected by a reflector 2 as shown in Figure 2.
Since the infrared rays are emitted from the focal point of the reflector 2, the infrared rays after one reflection are irradiated parallel to the front of the reflector plate 2 without spreading.

Problems to be Solved by the Invention In such a conventional configuration, the infrared rays of the heater unit 1 irradiated in all directions are concentrated by the reflector 2 within the range of the width of the reflector 2. Since the light was emitted forward, its illumination was limited to a narrow area. Although this was suitable for personal use, it was unreasonable to simultaneously require infrared irradiation over a wider range, such as when multiple people were using it. Furthermore, since it is a concentrated infrared ray, it has excellent instant warming properties, but there is also the problem that if the body is irradiated from one direction over a long period of time, it will cause local overheating, which is not good for the body's physiology.

The present invention solves these problems and aims to provide a reflective electric stove that emits gentle and appropriate infrared rays over a wide range.

Means for Solving the Problem In order to solve this problem, the present invention has a quartz tube type heater, and a plurality of heaters surrounding the quartz heater unit at substantially right angles to the axial direction of the quartz tube heater unit. It has the structure of an electric stove equipped with a heat-resistant plate.

Effect: With this configuration, a portion of the radiant heat emitted by the quartz tube heater unit warms the heat-resistant plate surrounding the quartz tube heater unit, and is re-radiated from the surface of this plate.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. In the figure, reference numeral 11 denotes a vertical quartz tube type heater unit, with end caps 13 provided at both ends, and a reflecting plate 1 having a parabolic surface with the heater unit 11 as the focal point.
2 with a reflector holder 15. These are held by a main body outer shell 14 and a shiny paste 16. The front of the main body outer shell 14 is open, and the radiant heat of the heater unit 11 is radiated. A U-shaped hard heat-resistant glass plate 1 extends across this opening and surrounds the main body outer shell 14.
A plurality of plates 7 are fixed at appropriate regular intervals with a plate holder 18 to prevent the user's hand from directly touching the heater unit 11 and to prevent external force from being directly applied to the heater unit 11.

To explain the effect of the above configuration, when the vertical heater unit 11 is energized, it becomes red hot and radiates radiant heat in all directions, but the radiant heat is concentrated in one direction by the reflector 12 having a parabolic surface with the vertical heater unit 11 as the focal point. and radiate. Next, the plate 17 is heated by the radiant heat rays, and the plate 17 itself emits radiant heat rays. At this time, since the plate 17 is provided wider than the radiant heat radiation surface of the vertical heater unit 11, the entire plate 17 is heated by conduction heat, and the radiant heat is also radiated over a wide range from the entire surface of the plate 17. In this way, the entire plate 17 is heated by the heater unit 1.
Although the temperature is lower than in No. 1, the safety against burns caused by contact during use is improved.

In addition to the hard heat-resistant glass used in the above embodiment, the plate 17 may be made of metal such as stainless steel or aluminum with the same effect. And again, plate 1
If the material No. 7 is made of a substance that emits far infrared rays, far infrared rays can also be emitted. Further, by making the surface of the plate 17 glossy, non-glossy, or applying various types of coatings or vapor deposition, the properties and radiation state of the radiant heat can be adjusted.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, by heating the plate surrounding the quartz tube heater with radiant heat emitted from the quartz tube heater, the quartz tube heater generates powerful heat directly from the quartz tube heater. By combining narrow-width radiant heat and gentle but wide-ranging radiant heat emitted from the heated plate, multiple people can be comfortably warmed.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional perspective view of a main part of a reflective electric stove according to an embodiment of the present invention, FIG. 2 is a side view of the same, and FIG. 3 is a cross-sectional perspective view of a conventional reflective electric stove. FIG. 4 is a diagram showing the reflection state. 11...Heater unit, 12...Reflector. 17...Plate. Figure 1 1f
・--Shi-l Knit Figure 2 Figure 4

Claims (1)

[Claims] a quartz tube heater unit; a reflector having a parabolic cross section with the quartz tube heater unit as a focal point and reflecting radiant heat from the quartz tube heater unit; An electric stove with multiple heat-resistant plates arranged at regular intervals surrounding a quartz tube heater unit.