JPH0431494Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a hot air heater such as an oil fan heater.

BACKGROUND TECHNOLOGY In general, this type of heater heats the room by blowing hot air, but recently, as shown in FIG.
There are some that can also provide radiant heating by radiating heat rays from a metal incandescent body 4 installed inside the room.

Problems to be solved by the invention However, in the above configuration, the incandescent body 4
Since it is made of metal, if it is used for a long period of time, it may undergo permanent strain and deformation due to high temperature creep, which may cause various problems. Therefore, it is necessary to use the incandescent element 4 at around 850℃, but this is too close to the safe use temperature of the material, and there are many situations in which product design is extremely difficult. However, it became necessary to use an expensive incandescent body 4 with a high heat resistance. And even if you make the metal red-hot at 850℃,
When viewed through a radiant window such as glass, it appears very dark, giving a poor product image, and despite the cost, the radiant effect is poor.

This invention was created in view of the above problems, and its purpose is to raise the red-hot temperature to 1000℃ to enhance the radiation effect (visual effect), and to allow it to be used safely for a long time without deforming. This is what I did.

Means for Solving the Problems In order to solve the above problems, the present invention provides an exhaust gas purification catalyst facing the radiation window, uses this exhaust gas purification catalyst as a red-hot body, and also uses an exhaust gas purification catalyst behind the exhaust gas purification catalyst. The exhaust gas passage is provided to prevent thermal deterioration due to high temperatures due to accumulation of exhaust gas.

Function As mentioned above, this invention changes the incandescent body from a metal to a catalyst, thereby increasing the incandescence temperature to approximately 1000℃, which significantly improves the radiation effect, and even if the temperature is increased to approximately 1000℃ The catalyst does not deteriorate due to heat, and since the exhaust gas passage is provided in the part that holds the catalyst and is most prone to high temperatures, this part will not deteriorate at high temperatures due to accumulation of exhaust gas, and can be used for a long time. It can be used well over time.

Example An example will be described below with reference to the drawings.
Reference numeral 11 denotes a main body, which has a radiation window 12 at the upper front surface and a hot air outlet 13 below the radiation window 12. 14 is a louver provided at the hot air outlet 13; 15 is the main body 11;
A burner is provided inside via a mounting stand 15a, and 16 is its burner case. Reference numeral 17 denotes a combustion cylinder placed on the burner case 16, which has a radiation window 18 opened at the upper front face opposite to the radiation window 12 of the main body 11, and whose upper part is closed by a canopy 19. Reference numeral 20 denotes a catalyst mounting bracket provided in an inclined manner within the combustion tube 17 so as to face the radiation window 18, and an opening 21 is formed in the central portion facing the radiation window 18. Reference numeral 22 designates a honeycomb-shaped exhaust gas purification catalyst disposed in the opening 21 of the catalyst mounting bracket 20, and is fixed to the opening 21 by bending a claw piece 23 cut and raised from the edge of the catalyst mounting bracket 20. Reference numeral 24 denotes an exhaust gas passage provided behind the catalyst mounting bracket 20, and is provided in an upper portion where exhaust gas tends to accumulate.

In the figure, 25 is a hot air path forming body, and 26 is a hot air fan.

In the above configuration, the combustion gas from the burner 15 is guided to the combustion tube 17 and rises, passes through the exhaust gas purification catalyst 22 and the exhaust gas passage 24, flows out from the radiation window 18 into the hot air path forming body 25, and flows out from the fan 2.
The warm air is mixed with the air from 6 and blown out from the hot air outlet 13.

Here, the exhaust gas purification catalyst 22 is heated to about 1000° C. by the combustion gas and becomes red hot, and the heat rays are radiated into the room through the radiation window 18 and the radiation window 12, thereby performing radiant heating. In other words, the exhaust gas purification catalyst 22 also functions as a conventional incandescent body.

Further, as is clear from FIG. 1, the exhaust gas purification catalyst 22 is arranged vertically and inclined in the front-rear direction, so that the radiation window 18 and the radiation window 1
The incandescent area facing 2 is wide, and a wide radiant heating effect can be obtained.

Furthermore, since the exhaust gas purification catalyst 22 is originally installed and used in high-temperature combustion gas,
Even when heated to a certain degree, there is no thermal deterioration unlike a red-hot body made of metal, such as rust caused by oxidation, and there are no problems such as uneven red heat or damage due to rust.

On the other hand, the catalyst mounting bracket 20 holding the exhaust gas purification catalyst 22 is maintained at a relatively low temperature due to the existence of the exhaust gas passage 24, and problems such as thermal deterioration are also almost eliminated. That is, for example, if the exhaust gas passage 24 is blocked by the catalyst mounting bracket 20 as shown by the broken line in FIG. At the same time as this occurs, the rear space a of the exhaust gas purification catalyst 22 becomes very high in temperature as exhaust gas accumulates (there is little heat transfer), and as a result, the catalyst mounting bracket 20 in this area tends to suffer thermal deterioration. become. However, in the present invention, since the exhaust gas passage 24 is provided in the rear space a of the exhaust gas purification catalyst 22, the exhaust gas does not accumulate in this area and the temperature becomes high, eliminating the risk of thermal deterioration. Since the exhaust gas flows out from the rear space a of the exhaust gas purification catalyst 22, the exhaust gas passing through the exhaust gas purification catalyst 22 uniformly passes through the entire area of the catalyst, thereby eliminating uneven heating.

Effects of the invention As described above, according to the invention, since the exhaust gas purification catalyst is used as a red-hot body, it is possible to make it red-hot up to about 1000℃ and improve the visual radiation effect, and it is also possible to improve the visual radiation effect up to about 1000℃. There is no need to worry about thermal deterioration even when heated to red heat, and since the exhaust gas passage is provided at the upper part of the exhaust gas purification catalyst, that is, at the rearmost part, the exhaust gas passes through the entire area of the exhaust gas purification catalyst uniformly, and at the same time, the exhaust gas purification catalyst Exhaust gas does not accumulate in the rear area and cause local heating, and the red heat of the exhaust gas purification catalyst becomes uniform, providing high-quality radiant heating while minimizing thermal deterioration of the catalyst mounting bracket. It can be used successfully for a long period of time. Moreover, since the exhaust gas purification catalyst also has the original exhaust gas purification function, it is cheaper in total compared to a conventional system that has both a metal red-hot body and an exhaust gas purification catalyst.
In addition, since the metal in the part that holds the catalyst is maintained at a relatively low temperature, inexpensive materials can be used, resulting in a significant overall cost reduction. You can get a heater.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of a hot air heater according to an embodiment of the present invention, Fig. 2 is a perspective view of the main parts, Fig. 3 is a cross-sectional view of Fig. 2, and Fig. 4 shows a conventional example. FIG. 11... Main body, 12... Radiation window, 17... Combustion cylinder, 22... Exhaust gas purification catalyst, 24... Exhaust gas passage.

Claims (1)

[Scope of utility model registration request] It is equipped with a main body having a radiation window on the front side through which the inside can be seen, a combustion tube with a radiation window provided in the main body, and an exhaust gas purification catalyst provided in the exhaust gas passage of the combustion tube. A hot air heater that is mounted upwardly and rearwardly relative to the main body above the combustion cylinder so as to face the radiation window via a mounting bracket, and has an exhaust gas passage formed at the rearmost part thereof.