JPS58220375A - Heater - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an infrared radiant heater for warming with improved infrared radiation efficiency.

Conventionally, panel heaters that radiate infrared rays from a wider area have been put into practical use, but these have an electric heater built into the lower part of a box 1, as shown in Fig. 1, and non-flammable oil 2 in the box 1. The case 1 is heated by an electric heater 3 with two pages, and the box 1 is formed as a panel-like heat source, or the planar heater 4 is arranged on the inner surface of the box 1, or the string-like heaters are arranged in a distributed manner. However, there is a panel heater formed as a panel-shaped heat source, which emits infrared radiation from the surface of the box 1. However, these panel heaters generally use a painted iron plate as the box 1, and the surface temperature is 70°C.
However, since thermal energy escapes from the surface by convection, the radiation efficiency with respect to input thermal energy is low.

The present invention aims to improve the drawbacks of the conventional example and increase the infrared radiation efficiency, and aims to realize an efficient infrared radiant heater for warming by reducing heat loss due to convection from the surface of the infrared radiant heater. It is something.

The structure of the present invention is to attach an exterior structure having a concave portion having an inclined wall surface to the surface of the heat source body, with the concave portion side facing the heat source body side, and such that the inclined wall surface hangs down from the heat source body side. This is a heater that forms an air layer between the body and the heat source body.

The effect of the present invention is that since the surface of the heat source body is covered with the air layer, the inclined wall surface is configured to hang down from the heat source body side, so there is little convection in the air layer, and the thermal conductivity of the air is low. , Since the infrared transmittance is high, the infrared rays radiated from the heat source are transmitted through the air layer and radiated from the surface of the infrared radiant heater, and the thermal energy that was escaping from the surface of the infrared radiant heater into the air as convection heat is absorbed. It acts as a suppressor.

In the configuration of the present invention, when the exterior structure is made of an infrared transparent material such as a fluororesin such as tetrafluoroethylene resin, silicone resin, polyethylene, or polycarbonate, which has high infrared transmittance, the exterior structure is In addition, the number of partition walls in the concave portion of the exterior structure can be increased so that the air layer can be formed as a small independent air layer. - Examples of the present invention will be explained with reference to FIGS. 3, 4, 6, and 6. As shown in FIG. 3, a self-regulating planar heating element 6 is attached to the front inner surface of the box 1, and a heat insulating material 6 is used on the back inner surface. A polycarbonate exterior structure 7 as shown in FIG. 6 is attached to the front surface of the box 1 so that the tapered wall surface hangs down from the heat source side to form a plurality of independent air spaces 8. As mentioned above, this air layer 8 is difficult to convect and has poor thermal conductivity, so it functions to suppress the thermal energy escaping as convection heat from the box 1 which is a heat source, and the air layer 8 and the polycarbonate exterior structure Since the infrared transmittance of the body 7 is good, the infrared rays radiated from the box 1 are transmitted through the air layer 8 and the exterior structure 7 and radiated.
It will be used for warming purposes.

Therefore, in addition to radiating infrared rays as in the conventionally used panel heater shown in Figure 1, 60 to 60% of the input energy is radiated into the air as convective heat from the surface of the box 1. There is thermal energy, which was lost due to natural ventilation, etc., but in the present invention, 30 to 40% of the input energy is suppressed to the extent that it is dissipated into the air as convective heat, and therefore infrared radiation is reduced. The energy 6 page ratio was 4o to 60% in the conventional example, but in the embodiment shown in FIG. 3, which is an embodiment of the present invention, it was 60 to 70%.
%, and efficiently radiates infrared rays that are directly absorbed by the human body, making it possible to realize an efficient infrared radiant heater for warming.

In addition, in carrying out the present invention, the exterior structure 7 may be used by forming a square-shaped recess as shown in FIG. And exterior structure 7
It is also effective as an embodiment of the present invention to provide a pattern on the surface.

Further, in carrying out the present invention, it is also possible to make a υ all-round type infrared radiant heater by making the radiating surface cylindrical.

Furthermore, although an electric heater is shown as the heat source in the embodiment, it is of course applicable to a combustion heater or a heat radiation heater from a heat transfer medium.

[Brief explanation of drawings]

Figures 1 and 2 are perspective views of a conventional heater; Figure 3;
FIG. 4 is a partial cross-sectional oblique view of page 6 of heaters showing various embodiments of the present invention, and FIGS. 5 and 6 are perspective views of main parts of the exterior structure of the same heater. 1...Box, 5...Heater, 7...
... Exterior body structure, 8... Air layer. Name of agent: Patent attorney Toshio Nakao (1st person)
Figure 2 Figure 3 Figure 5

Claims (3)

[Claims] (1) An exterior structure having a concave portion is attached to the surface of the heat source body on the side of the concave portion having an inclined wall surface so that the sloped wall surface hangs down from the heat source body side, and air is left between the exterior structure and the heat source body. A heater made of layers. (2) The heater according to claim 1, wherein the exterior structure is made of an infrared transparent material. (3) The heater according to claim 1, wherein the exterior structure is made of an infrared transparent material, and the air layer is formed as a group of independent air layers.