JPS6325463B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a heating heater in which the heat radiation ratio of convection heat radiation and infrared radiation heat radiation is variable.

Structure of conventional example and its problems Conventionally, as shown in FIG. By forming the box 1 as a panel-shaped heat source, it can be used as a heater to dissipate infrared radiation heat, or by providing a fin-like protrusion on the surface of the box to generate convection. Heaters that mainly dissipate heat are in practical use, but the ratio of heat dissipation between infrared radiation and convection in these heaters is fixed, so convection heat dissipation is not necessary as the room temperature rises. Even if the
This heater has the disadvantage that it is not possible to reduce convective heat radiation and radiates heat wastefully, or if the set temperature is lowered to reduce the convective heat radiation amount, the amount of infrared radiation heat radiation becomes insufficient. Also, if you try to raise the room temperature by convection heat radiation when the room temperature is low,
Infrared radiant heat is emitted at a fixed rate, and if the amount of infrared radiant heat radiated is set to an appropriate amount, the heater has the drawback that the amount of convective heat radiated is insufficient.

OBJECTS OF THE INVENTION The present invention improves the drawbacks of the conventional example, and aims to provide a heating heater in which the heat radiation ratio of convection heat radiation and infrared radiation heat radiation is variable.

Structure of the Invention In order to achieve the above object, the present invention includes a refracted or curved planar heating element, and a box joined to the planar heating element and made of a material with high infrared transmittance. A one-way communication hole is formed between the planar heating element and the box, and plate-shaped legs are provided at both ends of the box so as to be located in the same direction as the one-way communication hole. It is something.

Therefore, the effect of the present invention is that when the plate-like legs are installed so that the one-way communication hole is oriented horizontally, the air in the one-way communication hole does not flow through the one-way communication hole. Since only a small amount of convection occurs within the communication hole, the convective heat radiation of the heat radiation from the planar heating element is suppressed, and as a result,
The ratio of infrared radiation heat dissipation will increase. In addition, if the plate-like legs are installed so that the one-way communication hole is vertical, the air in the one-way communication hole is heated by the planar heating element, and Air passes through from the opening to the upper opening, which promotes convective heat dissipation among the heat dissipated from the planar heating element. Even in this case, infrared radiation heat dissipation hardly changes, so convective heat dissipation The ratio of convective heat radiation increases by the amount that increases. Furthermore, if the plate-like legs are installed so that the one-way communication hole is in an inclined state between horizontal and vertical, the above-mentioned intermediate heat radiation ratio will be obtained. Moreover, constructing the box from a material with high infrared transmittance is effective in transmitting infrared radiation from the planar heating element well and increasing the infrared radiation ratio.

DESCRIPTION OF EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. 2 and 3.

As shown in FIG. 2, the refracted planar heating element 4
A box 5 made of a polycarbonate plate with high infrared transmittance and a planar heating element 4 are joined along the refraction line, and one-way communication holes 6 aligned in the same direction are connected to the planar heating element 4 and the box. It is formed between 5.
Furthermore, plate-like legs 7 are attached to both ends of the box 5. With this plate-shaped leg 7, the
As shown in the figure, the one-way communication hole 6 can be installed both horizontally and vertically.

Therefore, as shown in FIG. 2, when the plate-like legs 7 are installed so that the one-way communication hole 6 is oriented horizontally, the air in this one-way communication hole 6 cannot flow through. Since there is no convection and only small convection occurs within this one-way communication hole 6, convective heat radiation of the heat radiation from the planar heating element 4 is suppressed, and as a result, the ratio of infrared radiation heat radiation is high. Therefore, the infrared radiation heat dissipation ratio is approximately 70%.

Further, as shown in FIG. 3, when the plate-shaped legs 7 are installed so that the one-way communication hole 6 is vertically oriented, the air in the one-way communication hole 6 is absorbed by the planar heating element. The air is heated and flows from the lower opening to the upper opening of the one-way communication hole 6, which promotes convective heat radiation from the planar heating element 4. There is an increase in convective heat dissipation of approximately 50%. Even in this case, the infrared radiation heat radiation hardly changes, so the ratio of convective heat radiation increases by the amount that the convective heat radiation increases.As a result, the infrared radiation heat radiation ratio decreases to about 61%, and the total heat radiation amount is about Increase by 15%.

In this example, the planar heating element 4 was made by insulating both sides of the heat generating material with a 300 μm polyester film, further pasting a 20 μm aluminum foil, and then applying a black velvet coating of 50 μm.
The one that had been treated with was used.

As a second embodiment, one side of the one-way communication hole 6 in the first embodiment is filled with polyurethane foam insulation material, and the surface of the sheet heating element 4 on the insulation material side is filled with polyurethane foam insulation material. By eliminating the black velvet coating and leaving the aluminum foil fabric as is, a heater was obtained which had the same effect as described above and had a main radiation heat dissipation surface on one side. In this embodiment, the one-way communication hole 6
The infrared radiation heat dissipation ratio when installed so that it is horizontal is about 64% on the main radiation heat dissipation side and about 5% on the insulation material side, and installed so that the one-way communication hole 6 is in the vertical direction. In this case, the infrared radiation heat radiation ratio is approximately 56% on the main radiation heat radiation surface side and approximately 5% on the insulation material side.
%, in this case we see an increase in convective heat dissipation of about 44%, and the total heat dissipation increases by 14%.

As a third embodiment, one side of the box 5 in the first embodiment is removed, and the surface of the planar heating element 4 facing the one side from which the box 5 is removed is made of black velvet. Eliminate coating,
Using the aluminum foil fabric as it was, a heater was obtained which had the same effect as described above and had a main convection heat dissipation surface on one side. In this embodiment, when the one-way communication hole 6 is installed in the horizontal direction, the infrared radiation heat radiation ratio is approximately 45% on the main radiation heat radiation surface side, approximately 6% on the main convection heat radiation surface side, and When the directional communication hole 6 is installed in the vertical direction, the infrared radiation heat radiation ratio on the main radiation heat radiation surface side is approximately
41%, and about 6% on the main convection heat dissipation side, in this case,
An increase in convective heat radiation of approximately 20% was observed, and the total amount of heat radiation was approximately 10%.
%To increase.

Effects of the Invention As is clear from the description of the above embodiments, according to the present invention, the direction of the one-way communication hole can be changed from the horizontal direction to the vertical direction, so that the heat radiation ratio between infrared radiation heat radiation and convective heat radiation can be changed. In addition, it is possible to easily obtain a heating heater that has the effect of increasing or decreasing the amount of convective heat radiation. Furthermore, since the box is made of a material with high infrared transmittance, the infrared radiation ratio can also be increased.

In the embodiments of the present invention, a planar heating element bent in an accordion shape was shown, but a planar heating element bent doubly as shown in FIG. 4 or a curved surface as shown in FIG. By using a shaped heating element, it is also possible to change the heat radiation ratio, which is useful as an embodiment of the present invention.

Further, the planar heating element used in the present invention may be one in which a string-shaped heating element is arranged on a flat surface, or one in which the string-shaped heating element is wound around a flat plate to form a plate-shaped heating element.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional heating heater;
Fig. 2 is a perspective view of a heating heater showing an embodiment of the present invention, Fig. 3 is a perspective view of the heating heater in another direction, and Figs. 4 and 5 are sheet heating elements of the present invention. FIG. 6 is a perspective view and a side view showing another embodiment of the invention. 1... Box, 2... Electric heater, 4... Planar heating element, 5... Box, 6... One-way communication hole, 7...
...plate-shaped legs.

Claims (1)

[Claims] 1. A refracted or curved planar heating element, and a box joined to the planar heating element and made of a material with high infrared transmittance, and between the planar heating element and the box. A heater for warming the body, wherein a one-way communication hole is formed in the housing, and plate-shaped legs are provided at both ends of the box so as to be positioned in the same direction as the one-way communication hole.