JPS61143636A - Electric stove - Google Patents

Abstract

PURPOSE:To increase the warmth-taking area by widening the angle of reflection without lowering the radiant heat in front of a reflecting plate by forming a reflecting body in a convexly curved shape. CONSTITUTION:A reflecting body 9 is made up of a large number of surfaces of reflection 10 having honeycomb-like form consisting in adjoining parallel hollow hexagonal poles made of foil. The material of the foil is the highly reflective material such as aluminum. The foil interlayer is made of foil-shaped thin sheet having the thickness of about 30mum. In addition, the reflecting body 9 is formed in a forwardly convexly curved shape and detachably fixed to a stove main body 5 by means of claws 11. Because the reflecting body 9 is convexly curved, the reflective surface 10 at the central portion is not inclined to the reflected light. The nearer the reflective surface 10 approaches to the end side of the reflecting plate 7, the more the reflective surface 10 is inclined to the reflected light to the side surface side. Accordingly, the radiant heat at the central portion of the reflecting body advances forward without being reflected by the reflective surface 10 and emitted further onward. On the other hand, the radiant heat at the end side of the reflecting plate is reflected by the inclined reflective surface 10 and refracted and emitted sideways, resulting in widening the radiant heat in the lateral direction.

Description

[Detailed description of the invention] Industrial applications The present invention relates to an electric stove.

BACKGROUND OF THE INVENTION In order to expand the reflection direction and widen the heating area, conventional electric stoves have a structure as shown in Figures 5 and 6, as shown in Japanese Patent Publication No. 167806/1983, for example. was.

That is, a heat shield plate 3 is provided in front of a reflector plate 2 provided in the stove body 1, and the radiant heat from the heating element 4 is diffused over a wide angle to expand the direction of reflection and widen the heating area.

Problems to be Solved by the Invention However, with such a structure, since the radiant heat of the heating element 4 is blocked, the reflection angle widens as shown in Fig. 6, and the heating area increases, but the central part Since the radiant heat decreases, there is a problem in that the sense of warmth decreases when placed in front of the reflector plate 2, resulting in a lack of warmth.

Therefore, the present invention widens the reflection angle without reducing the radiant heat in front of the reflector, thereby increasing the heating area.

Means to Solve the Problems And the technical means of the present invention to solve the problems described above is a heating element provided in the stove main body, a reflector plate provided on the back side of the heating element, and the heating element. and a reflector formed of a thin plate of highly reflective material and having a large number of reflective surfaces in the depth direction, and the reflector is curved into a convex shape.

For production The effect of this technical means is as follows.

That is, visible light and infrared rays generated by the heating element are not absorbed by the reflector but are reflected by the reflective surface and radiated forward. Since the reflector is curved, the reflective surface at the center of the reflector has a small slope, so the radiant heat is transmitted and radiated forward without being reflected by the reflective surface. Since the reflective surface at the end of the reflector has many slopes, the radiant heat is reflected by the reflective surface and radiated laterally.

As a result, the reflection angle can be widened and the heating area can be increased without reducing the radiant heat in the central part.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings.

In Figures 1 and 2, 5 is the stove body, 6 is a heating element, and a reflector 7 with a parabolic cross section on the back of the heating element 6.
are fixed to the stove body 5 via upper and lower reflectors 8. Further, the heating element 6 is similarly fixed to the upper and lower reflecting plates 8 and is located approximately at the focal point of the parabolic shape of the reflecting plate 7.

A reflector 9 is provided on the entire opening of the reflector 7 in front of the heating element 6.
is located.

As shown in FIG. 4, the reflector 9 has a number of honeycomb-shaped reflecting surfaces 10 in which hexagonal columns surrounded by foil are adjacent to each other in parallel.
Made of highly reflective material (e.g. aluminum)
It is made of a foil-like thin plate of about 30 μm.

Further, as shown in the first drawing and FIG. 3, the reflector 9 is curved in a convex shape facing forward, and is detachably fixed to the stove body 5 with a claw 11.

The heating element 6 is a heater that generates visible light and infrared rays. In this embodiment, the light emitting element is tungsten, which is sealed in an inert gas, and the linear temperature is 1100 to 1000.
It is a high temperature type heater of about 1500'C.

Next, the operation of this embodiment will be explained.

As shown in FIG. 1, the radiant heat from the heating element 6 is transferred to the reflection plate
It is reflected by the beam and emitted forward as a parallel beam of light.

Since the reflector 9 is curved in a convex shape, the reflecting surface 1o has no slope at the center, as shown in FIG. 1, and becomes sloped toward the side toward the end of the reflecting plate 7.

Therefore, the radiant heat at the center of the reflector 9 is not reflected by the reflective surface 10, but travels straight ahead and is emitted.

Since the thickness of the reflective surface 10 is as thin as approximately 30 μm, it is difficult to provide resistance to the radiant heat in the straight direction.

On the end side, the radiant heat is reflected by the inclined reflective surface 1o, refracted, and emitted to the side, so that the radiant heat spreads in the side direction.

The reflector 9 has a honeycomb shape made of aluminum foil, which is a highly reflective material, so it has a high reflectance, low heat loss, and has many reflective surfaces, so it has good refraction and can be adjusted in the heating direction. The spread is 1 ha.

Since the heating element 3 is a high-temperature heater, its brightness is high, and the diffusely reflected light is reflected and refracted by the reflective surface 10 of the reflector 9, so that the reflected light is reflected over the entire surface, creating a visual heating effect.

As a result, the radiant heat is not reflected by the reflective surface in the front direction, so the heating effect does not decrease, and the radiant heat is refracted by the reflective surface in the side direction, so it spreads and the heating area can be increased.

Further, since the reflector 9 has a honeycomb structure, it is strong, and since the reflective surface is fine, hands, etc. do not come into contact with the heating element 6, increasing safety.

In addition, since the reflector 9 is detachable from the stove body 5, it can be removed and used when there is no need to expand the heating area.
If the reflective surface deteriorates due to aging, it can be easily replaced, and if dust is attached, it can be removed and cleaned.

Effects of the Invention The present invention provides a convexly curved reflector in front of the heating element.
Since the radiant heat of ＼ can be spread out, the range of heating can be expanded.

(2) Since the diffused light is reflected on the reflective surface, visible light is reflected on the entire surface of the reflector, creating a visual heating effect.

(3) Since the reflector has many fine reflective surfaces, fingers and the like do not come into contact with the heating element, increasing safety.

(4 The reflector is a thin plate made of highly reflective material, so there is little loss of radiant heat.

[Brief explanation of drawings]

Fig. 1 is a flat surface view of an electric stove according to an embodiment of the present invention, Fig. 2 is a vertical sectional view of the same, Fig. 3 is a perspective view of the same, Fig. 4 is a perspective view of a reflector, and Fig. 5 The figure is a perspective view of the conventional example.
The figure is a radiation distribution diagram of the same. 5...Stove body, 6...Heating element,
7...Reflector, 9...Reflector, 10.
...Reflective surface. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3 Figure 4 Figure 5 Figure 6

Claims (4)

[Claims] (1) A stove body with an open front, a heating element provided inside the stove body, a reflective plate provided on the back of the heating element, and a thin plate made of a highly reflective material provided on the front of the heating element. An electric stove comprising: a reflector having a large number of reflective surfaces formed in a depth direction, the reflector having a curved convex shape. (2) The electric stove according to claim 1, wherein the reflector is configured to be detachable from the stove body. (3) The electric stove according to claim 1, wherein the reflector is formed of aluminum foil in a honeycomb shape. (4) The electric stove according to claim 1, wherein the heating element generates visible light and infrared rays.