JPS5969692A - Heater - Google Patents

Abstract

PURPOSE:To reduce heat loss due to convection and provide the heater outputting radiation energy having a high radiating efficiency by a method wherein the heater is constituted by a plurality of thin plate-like protuberances, arranged horizontally near a heat source and having different heights, and air, whose flowing is precluded by the thin plate-like protuberances. CONSTITUTION:A heat insulating material 5 of polyurethane or the like is adhered to one surface of the uprightly standing heat source body 4. The thin plate-like protuberances 6 of polyester resin, having the thickness of 0.05- 1.0mm. and the heights of 12=5-50mm. which are increasing from the upper part to the lower part of the heat source body 4, are arranged horizontally on the other surface of the heat source body 4 with the distances of 11=2.5-50mm.. In said constitution, the air 7 between the thin plate-like protuberances 6, heated by the heat source body 4, stays its position due to the existance of the protuberances 6 above and below the air. As a result, the movement in the vertical direction of the high-temperature air is precluded and heat dissipation due to the convection may be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a heater used for space heating, heating, anti-freezing, etc., and particularly to a heater with high radiation efficiency.

Conventional configurations and their problems Panel heaters that radiate infrared rays from a wide area have been put to practical use.As shown in FIG. It has a built-in base, the box is filled with non-flammable oil 3, and the electric heater 2 is installed.
It was heated to form a panel-shaped heat source for the box 1.

However, other types of heat sources are formed as panel-shaped heat sources by disposing string-like heaters all over the inside surface of the box 1 or by disposing planar heaters, which emit infrared radiation from the surface of the box. It was a panel heater that was made to work.

However, these panel heaters generally use a painted iron plate as the box 1, and the surface temperature ranges from 70'C to 90'C.
Infrared radiation is carried out at a temperature of about 0''C, but the radiation efficiency for thermal energy due to convection from the surface is low, about 40 to 6o%.Therefore, it is not necessary to raise the room temperature by convection heat radiation. Even if there is no radiant heat, convective heat radiation will occur to the same degree or more at the same time as radiant heat is obtained.
It was a heater with a thermal energy emitting structure for heating, which caused a large loss of thermal energy.

OBJECTS OF THE INVENTION The present invention solves such conventional problems, and aims to provide a heater that reduces heat loss due to convection and outputs radiant energy with high radiation efficiency.

Structure of the Invention In order to achieve this object, the present invention includes a heat source body and a plurality of heat source bodies 11f of different heights arranged horizontally near the heat source body.
It is composed of a thin plate-like protrusion fi and air whose flow is completely obstructed by the thin plate-like protrusion.

This configuration has the effect of inhibiting convective heat radiation f and outputting more efficient and high-density infrared radiant energy from the front surface of the heater with less input energy.

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

In FIGS. 2 and 3, a heat insulating material 6 such as polyurethane is bonded to one surface of a vertically erected heat source 4. As shown in FIG. In addition, the other surface of the heat source body 4 [fl, so as to form a convex projection, has a thickness of 0.05 to 1-0 mm, and a height of β2.
12-5 so that it increases from the top to the bottom
Thin plate-like protrusions 6 made of polyester resin with a thickness of ~60 mm are installed horizontally with an interval 1 of 2-5 mm to 50 mm.

In the above configuration, since the thin plate-like protrusions 6 are present, the air 7 between the thin plate-like protrusions 6 heated by the heat source 4,
Because of the thin plate-like protrusions 6 above and below, the air returns to that position. As a result, hot air is prevented from moving vertically. That is, heat dissipation due to convection is reduced.

Note that since air easily transmits infrared rays, it is clear that infrared rays from the heat source are efficiently radiated to the outside. In other words, since the air between the thin plate-like protrusions 6 is infrared transparent and heat insulating, it greatly contributes to improving the infrared radiation efficiency.

Furthermore, since the thin plate-like protrusions 6 are made of a material with low thermal conductivity such as polyester, the heat conduction is several hundred times lower than that of metals such as aluminum, so it is unlikely that they will function as heat dissipation fins. do not have.

In addition, since the height of the thin plate-like protrusion 6 increases from the top to the bottom, when the heat source 4 itself is viewed from below the front of the heat source 4, the visible ratio of the heat source 4 decreases. and a thin plate-like protrusion 6 of the same height that the proportion of the thin plate-like protrusion 6 is visible.
The cost will be higher than if a That is, the heat source 4
This results in an increase in radiation to the front downward direction. On the contrary,
When the heat source body 4 itself is viewed from above the front of the heat source body 4, the ratio decreases, and the radiation decreases. That is, the radiation from the heat source body 4 increases the downward radiation and reduces the unnecessary upward radiation to the ceiling and the like.

Furthermore, in this example, only one surface of the heat source is a radiant surface, but it is clear that a similar effect can be obtained with a heater configured so that both surfaces are radiant surfaces. be.

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

(1) The air has infrared transmittance and heat insulation properties, and the structure is such that the movement of air can be suppressed as much as possible by thin plate-like protrusions, thereby reducing heat loss due to convection. Input energy can be output as radiant energy with high efficiency. According to the present invention, when trying to obtain the same infrared radiation, the input energy is reduced compared to the conventional method, resulting in an energy saving effect.

? ) By changing the height of the thin plate-like protrusion depending on the position of the heat source, more radiant energy can be output in the necessary direction, and less radiant energy can be output in unnecessary directions.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view of a conventional heater, FIG. 2 is a sectional view of an embodiment of the heater of the present invention, and FIG. 3 is a perspective view of an embodiment of the heater of the present invention. 4... Heat source body, 5... Heat insulator, 6...
... Thin plate-like protrusion, 7... Air whose flow is obstructed by the thin plate-like protrusion. Figure 1 Figure 3 Figure 2 I-no. ■１

Claims (1)

[Claims] (1) It is composed of a heat source body and a plurality of thin plate-like protrusions of different heights arranged horizontally near the heat source body, and an air layer whose flow is inhibited by the thin plate-like protrusions is formed. structure heater. (to) The heater according to claim 1, wherein the height of the thin plate-like protrusion increases from the top to the bottom of the vertically erected heat source body.