JPH03207918A - Radiant type heater and radiant element - Google Patents

Abstract

PURPOSE:To sufficiently obtain radiant energy having a wave length in the far infrared ray region by a method wherein a ceramic radiant element is attached on an opening of a combustion drum, and corrugations are formed on the radiant element in the same direction of the flow of waste gas generated by a burner. CONSTITUTION:When a flame 14 is formed on a burner 2, the high temperature waste gas heats a red-hot element 12 up to red-hot while passing through punched holes on the red-hot element 12, so that a radiant element 5 on an opening 4 of a combustion drum 3 is heated. As the radiant element 5 has corrugations 6 in the same direction of the flow of waste gas, the waste gas smoothly flows, and as the recessed parts are located inside and near by the waste gas, their temperature becomes higher. The radiant element 5 radiates sufficient radiant energy because of an increase in the heat transfer area due to the corrugations 6, and a wide spread radiation can be obtained. As the radiant element 5 is made of ceramics, a radiation having a wave length in the far infrared ray region can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a radiant heater for home or commercial use and its radiant. Conventional technology Currently, the mainstream heating system is hot air heaters such as fan heaters, but in recent years, radiant heating has been reconsidered due to the discomfort caused by hot air hitting the body. An example of the above-mentioned radiant heating system will be explained below with reference to the drawings. FIG. 4 is a longitudinal cross-sectional view of a conventional radiant heating system. In FIG. 4, 21 is a main body, 22 is a burner provided inside this zero body 21, and a combustion cylinder 2 is provided on the upper part of this burner 22.
3 is listed. Reference numeral 24 denotes an opening provided in the side wall of the combustion tube 23, and a glass 25 is attached to this opening 24 with a holding metal fitting 26. 27 is a punched incandescent body provided above the burner 22;
It faces 5. , 28 is a radiator attached to the upper part of the combustion tube 23.

The operation of the radiant heater that has been given the above warning will be explained below.

When the main body 21 is turned on, combustion starts in the burner 22 and a flame 29 is formed. The above burner 22
The high-temperature exhaust gas generated passes through the bunching holes of the incandescent body 27, thereby making the incandescent body 27 red-hot, and also heats the combustion tube 23 and the glass 25 attached to the opening 24 in its side wall. The radiation from the incandescent body 27 passes through the glass 25 and is radiated out of the main body 2l, and the radiation from the heated glass 25 is also radiated out from the main body 21.

Note that the exhaust gas that has passed through the combustion m23 is discharged after radiating heat in the radiator 28. Problems to be Solved by the Invention However, in the conventional radiant heater described above, the radiation emitted outside the main body 21 is strong enough to touch human skin, and most of the radiation has wavelengths in the near-infrared region. ．． There are individual differences in what type of radiation is best for each person, and those who prefer strong radiation may be fine with the conventional radiant heaters mentioned above, but those who are looking for mellow radiation may not be satisfied. there were.

In addition, there is a large area in front of the main body 21 where such strong wavelength radiation in the near-infrared region is too strong and causes discomfort. It could hardly be called a heater. That is,
For such people, radiation with wavelengths in the far-infrared vA region is preferred.

From this point of view, as another conventional example, instead of glass 25, a ceramic material as shown in FIG. Some devices are equipped with a flat plate-shaped radiator 30. In this case, it is true that radiation of wavelengths in the far infrared & I region can be obtained, but the radiant energy radiated outside the main body 21 is extremely reduced, and satisfactory radiation cannot be obtained, and the radiator 30 is a flat plate. Because of the shape, the problem was that the spread of radiation was small. The present invention solves the above-mentioned problems, and provides a radiant heater that is satisfactory in terms of radiant energy, can spread the radiation widely, and most of the radiation is radiation of wavelengths in the far-infrared region. It is something. In addition, it is designed to satisfy both those who prefer radiation in the strong near-infrared region and those who prefer radiation in the mellow far-infrared region, and can be used in both large and narrow rooms. To provide a radiator that can be easily replaced with glass for comfort.

Means for Solving the Problems In order to achieve the above object, the present invention includes a radiator made of ceramic, which is provided with corrugated grooves in the same direction as the flow direction of the exhaust gas generated from the burner. , radiation is obtained from the outer surface of the radiator. Further, the radiator has a planar flange portion around its outer periphery.

Function The present invention has the above-described structure, and since the radiator is made of ceramic, it is possible to obtain radiation with a wavelength in the far infrared region, and the radiator has a waveform in the same direction as the flow direction of the exhaust gas generated from the burner. Since the concave and convex stripes are provided, the temperature of the concave portion becomes high and the heat transfer area becomes large, so that sufficient radiant energy can be obtained and the spread of radiation becomes large. In addition, since the radiator has a flat flange around it, replacing it with flat glass requires no changes to the parts.
It can be easily replaced without any additions, and will satisfy both those who prefer strong near-infrared wavelength radiation and those who prefer mellow far-infrared wavelength radiation, and can be used in large rooms. It can be used comfortably in both small and small rooms.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 3.

In the figure, 1 is a main body, 2 is a burner provided inside this main body 1, and a combustion tube 3 is placed on the upper part of this burner 2. 4 is an opening provided in the side wall of the combustion tube 3;
is a radiator attached to this opening 4, which has corrugated concavo-convex strips 6 in the same direction as the flow direction of the exhaust gas generated from the burner 2, as shown in FIG. The radiator 5 is made of ceramic and has a planar flange 7 around its outer periphery. 9 and screws 10 to removably press and fix. The outer surface of the radiator 6 is coated with a heat-resistant coating 11. Reference numeral 12 represents a punched incandescent body provided above the burner 2, and faces the radiator 5. Reference numeral 13 represents a radiator attached to the upper part of the combustion tube 3.

The operation in the above structure will be explained.

When the operation switch of the main body 1 is turned on, combustion starts in the burner 2, and a flame 14 is released. The high-temperature exhaust gas generated by the burner 2 passes through the punched holes in the incandescent body 12, thereby making the incandescent body 12 red-hot and burning? The iJ3 and the radiator 5 attached to the opening 4 in its side wall are heated.

Here, the radiation from the incandescent body 12 heats the radiator 5 to a higher temperature. Furthermore, since the radiator is recessed inward as a whole, it is closer to the exhaust gas generated from the burner 2 and heated to a high temperature. Since the radiator 5 has corrugated grooves 6 in the same direction as the flow direction of the exhaust gas, the flow of the exhaust gas becomes smooth, and as the exhaust gas flows along the grooves and grooves 6, the bottom, that is, the concave portion becomes more It is located inward, closer to the exhaust gas, and therefore becomes hotter. In addition, the radiator 5 has the effect of increasing the heat transfer area of the uneven strips 6,
Sufficient radiant energy is emitted due to the radiation efficiency of the heat-resistant coating 11 on the outer surface. In addition, the uneven strips 6 allow the heat rays to be radiated in the left and right directions, resulting in a spread out radiation. Note that since the radiator 5 is made of ceramic material, it can emit radiation at a wavelength in the far-infrared vASI range.

In addition, even though the radiator 5 has a wave shape, it has a flat flange 7 around it, so the opening 4 side of the combustion tube 3, which is the side to which it is attached, does not need a unique shape and is just a flat part. That's fine. Therefore, even if the glass is flat, it can be installed as is. In other words, it is easy to remove the glass and replace and attach the radiator 5 to a device that has already been fitted with a glass. Note that the exhaust gas that has passed through the combustion tube 3 is discharged after radiating heat in the radiator 13. Effects of the Invention As described above, according to the radiant heater and radiant body of the present invention,
Since the radiator is made of ceramic, it can emit radiation with wavelengths in the far infrared region, and since the radiator has corrugated grooves in the same direction as the flow direction of the exhaust gas generated from the burner, it is possible to The temperature becomes higher and the total heat transfer area becomes larger, so that sufficient radiant energy can be obtained and the spread of radiation becomes larger.

Furthermore, since the outer surface of the radiator is coated with a heat-resistant coating, radiation efficiency can be increased and more satisfactory radiant energy can be obtained.

In addition, the radiator has a flat flange around its outer periphery, so even flat glass can be easily replaced without changing or adding any parts. To provide a sense of satisfaction to both those who prefer radiation in the wavelength range and to those who prefer radiation in the calm far-infrared wavelength range, and to provide comfort in both large and narrow rooms. It is something that can be done.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a radiant heater according to an embodiment of the present invention, FIG. 2 is a front view of the radiant heater, FIG. 3 is a perspective view of the radiant of the radiant heater, and FIG. Figure 4 is a longitudinal sectional view of a conventional radiant heater, and Figure 5 is a longitudinal sectional view of another conventional radiant heater. 2... Burner, 3...
- Combustion tube, 4... Opening, 5... Radiator, 6... Uneven strip, 7... Flange part,
l1...Heat-resistant coating.

Claims (2)

[Claims] (1) A burner, a combustion tube attached to the burner, an opening provided at an appropriate position in the combustion tube, and a radiator detachably attached to the opening, the radiator being made of ceramic, and the A radiant heater in which the radiator is provided with corrugated grooves in the same direction as the flow direction of the exhaust gas generated from the burner, and radiation is obtained from the outer surface of the radiator. (2) The radiant heater according to claim 1, wherein the outer surface of the radiator is coated with a heat-resistant coating. (3) A radiator that, when attached to a radiant heater, has corrugated undulations in the same direction as the flow direction of exhaust gas and has a flat flange on its outer periphery.