JPH0139198B2 - - Google Patents

Description

Detailed Description of the Invention Field of Industrial Application The present invention relates to a heater used for space heating, warming, anti-freezing, etc., particularly an infrared radiant heater for warming with high radiation efficiency. This also relates to a heater having a structure that eliminates directivity and emits uniform radiation over the entire range.

Structure of conventional example and its problems As shown in Fig. 1, infrared radiant heaters that have been used conventionally have a housing 1 that stands almost vertically.
There is one in which an electric heater 2 is built into the lower part of the housing, and the inside of the housing 1 is filled with nonflammable oil 3. Another conventional example is one in which a planar heater 4 is arranged on the inner surface of the housing 1, as shown in FIG. Furthermore, instead of the planar heater 4, there is also one in which string heaters are distributed in a distributed manner. These conventional infrared radiant heaters pass electricity through the electric heater 2 and non-flammable oil 3.
Alternatively, the sheet heater 4 is energized to maintain the surface temperature of the housing 1 at 70 to 90°C, and the heated surface of the housing 1 is used as a heat source to radiate infrared rays. in this case,
Since the box 1 is a plane, the view factor decreases as the angle from the normal to the plane of the box 1 increases, and becomes 0 at an angle of 90°. In other words, although the front side of the housing 1 is warm, the area near the side surfaces is not warm.

OBJECTS OF THE INVENTION The present invention solves these conventional problems and provides a heating heater whose radiation width is variable so that it can be narrowed or widened.

Composition of the Invention In order to achieve this object, a heat source body erected in a nearly vertical direction, an infrared radiating material layer formed on one surface of the heat source body, and a surface vicinity of the infrared radiating material layer are provided. perpendicular to the heat source, and
A plurality of thin plate-like protrusions installed in the vertical direction,
It consists of a heat insulating layer installed on one surface of the heat source, and the heat source is configured so that it can be freely bent in the horizontal direction.

With this configuration, when the heat source is in a nearly flat state, the distribution of radiant energy radiated to the front surface becomes extremely narrow due to the thin plate-like protrusions, resulting in less directivity compared to a completely diffusing surface. tends to increase. Therefore, when the heat source body is bent in a convex shape in the horizontal direction, the normal direction at each position of the heat source body is different, so radiant energy cannot be uniformly distributed in all directions. Can be done.

As described above, the present invention provides a heater that can emit radiation in a desired direction, both narrowly and widely.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be explained as shown in FIGS. 3, 4, and 5.
This will be explained using FIG.

In FIGS. 3, 4, 5, and 6, a heat source A having a planar heater 6 disposed on one surface of a substrate 5 is erected almost vertically. On the other surface of this substrate 5, an infrared radiating material layer 7 of 10 to 200 μm is coated or adhered. Near the surface of this infrared radiating material layer 7, the height L _H in the vertical direction is 5 to 5.
Thin plate-like protrusions 8 of 30 mm and 0.05 to 1.0 mm in thickness are installed at intervals L _P of 2.5 to 50 mm. Heat source A
A heat insulating material 9 such as glass wool is placed on the surface of the sheet heater 6 to a thickness of about 15 mm so that it can be bent relatively freely. Note that the arrows in FIGS. 4 and 5 indicate the normal direction.

In the above configuration, when the heat source A is made substantially flat, the radiant energy distribution is shown in FIG. 6 when there is no thin plate-like protrusion 8 (solid line) and when it is present (broken line). In the same figure, if there is a thin plate-like protrusion,
The distribution of radiant energy becomes very narrow,
The density increases in the normal direction of the heat source, and as the angle from the normal direction increases, the density of radiant energy decreases extremely. In other words, directionality appears. Here, since this heat source A can be bent into a convex shape, the heat is radiated directionally in the normal direction of the heat source A at each position, so the radiation is uniform in all directions. It becomes possible to release it.

Effects of the Invention As described above, according to the heater of the present invention, the following effects can be obtained.

(1) If the heat source is made almost flat, it becomes a highly directional radiation heater.

(2) By bending the heat source into a convex shape, it becomes a radiant heater that emits uniform radiation.

(3) Even when installed directly in contact with the wall of a house, the directivity is high, so there is little radiation to the wall.

[Brief explanation of drawings]

FIGS. 1 and 2 are partially cutaway perspective views of a conventional heater, FIG. 3 is a perspective view showing an embodiment of the heater of the present invention, and FIG. 4 is a cross-sectional view of the heat source when it is made into a plane. A top view, FIG. 5 is a top view showing a cross section when the heat source is bent into a convex shape, and FIG. 6 is an angular distribution diagram of the radiant energy ratio with and without a thin plate-like protrusion. 5... Substrate, 6... Planar heater, 7... Infrared radiant material, 8... Thin plate shaped protrusion, 9... Heat insulating material, A... Heat source body.

Claims (1)

[Claims] 1. A heat source body erected in a nearly vertical direction, an infrared radiating material layer formed on one surface of the heat source body, and a layer perpendicular to the heat source body and vertically disposed near the surface of the infrared radiating material layer. A heater comprising a plurality of thin plate-like protrusions installed in the direction and a heat insulating layer installed on the other surface of the heat source body, and configured so that the heat source body can be freely bent in the horizontal direction. .