JPS61130750A - Hot air space heater - Google Patents

Abstract

PURPOSE:To remove irregularity in red-heat of an exhaust gas purification catalyst and to improve the red-heat degree thereof by causing flame to hit against the front surface of the exhaust gas purifying catalyst and causing the front surface to face a radiation window. CONSTITUTION:Combustion part 17 and rises up, passing through an exhaust gas purifying catalyst 22, flowing into a hot air flow passage forming member 24 through an opening 19a of a top lid 19, being mixed with an air flow from a fan 25, and being blown off through a hot air blow-off port 13. In this case, the exhaust gas purifying catalyst 22 is heated by a combustion gas and becomes red-heat, and its hot line is irradiated into the room through a window 18 for radiation and a radiating window 12 to carry out radiation space heating. Further, since the exhaust gas purifying catalyst 22 is provided vertically and downward inclined longitudinally, the combustion gas heats the side of the window 18 for radiation, and the red-heat degree is improved. Further, a combustion noise generated by the combustion, similarly as the combustion gas, is discharged upwardly through the opening 19a of the top lid 19 of a combustion part 17, and hence the hot air passage forming member 24 creates a sound interrupting effect, and the noise at the front surface of a main body 11 is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to hot air heaters such as petroleum heaters/heaters.

Conventional technology Generally speaking, this type of heater heats the room by blowing hot air, but recently, as shown in FIG. There are some models in which the heat rays of the exhaust gas purification catalyst 4 installed in the exhaust gas purification catalyst 4 are radiated into the room to perform radiant heating.

Problems to be Solved by the Invention However, in this type of device, the combustion flame hits the back side of the exhaust gas purification catalyst 4, so even though this back side is heated evenly, the red heat on the surface facing the radiation window is dark and uneven. Another problem was that the radiant heating effect was poor. Further, the combustion tube 3 is provided with a radiation window 5 facing the radiation window 2, and combustion noise is directly transmitted through the radiation window 5.
Since the hot air can be heard from the hot air outlet 6, there have been various problems such as a high noise level.

The present invention is intended to solve such conventional problems, and first of all, it is an object of the present invention to improve the degree of red heat by eliminating uneven red heat of an exhaust gas purification catalyst. - Means for Solving the Problems In order to solve the above problems, the hot air heater of the present invention has a structure in which the flame hits the front surface of the exhaust gas purification catalyst, and
This surface is configured to face the radiation window.

Effect of the present invention With the above configuration, the surface of the exhaust gas purification catalyst that is most efficiently heated by the combustion gas faces the radiant window to perform radiant heating, so that good radiant heating without uneven red heat can be obtained. Become.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

In Figure 1, 11 is the main body, with a radiation window 12 at the top of the front.
, and has a hot air outlet 13 below it.

14 is a louver provided at the hot air outlet 13; 15 is a burner provided in the main body 11 via a stand 15a;
is the burner case. 17 is the burner case 1 mentioned above
6 is a cylindrical combustion section placed on the radiation window 12 of the main body 11.
A radiation window 18 made of a transparent material such as heat-resistant glass is provided at the upper part of the front facing the window. 19 is the combustion section 1
It is a canopy provided to cover 7, and has an opening 19a at the rear of the front. Reference numeral 20 denotes a frame provided within the combustion section 17 so as to surround the opening 19a of the canopy 19, and an opening 21 is formed in the portion facing the radiation window 18. 22 is the above frame body 20
A honeycomb-shaped exhaust gas purification catalyst arranged in the opening 21 of the
A claw piece 23 cut and raised from the opening edge of the frame body 20 is bent and fixed to the opening 21. 1. In the figure, 24 is a hot air path forming body, and 25 is a fan for blowing air.

In the above configuration, the combustion gas from the burner 15 is guided to the combustion part 17 and rises, passes through the exhaust gas purification catalyst 22, flows out from the opening 19a of the canopy 19 into the hot air path forming body 24, and is discharged from the fan 25. It mixes with the wind and blows out from the hot air outlet 13.

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

As is clear from FIG. 1, the exhaust gas purification catalyst 22 is arranged vertically and inclined downward in the front-rear direction, so that the combustion gas flows through the radiation window 18 side of the exhaust gas purification catalyst 22. The degree of red heat increases due to heating. Furthermore, the combustion noise generated by combustion is also absorbed by the combustion section 17 in the same way as the combustion gas.
Since the hot air is discharged upward from the opening 19a of the canopy 19, the hot air path forming body 24 produces a sound insulation effect and reduces the noise in front of the main body 11.

Next, another actual case of the present invention will be explained using FIG. 2. The difference in FIG. 2 from the previous embodiment is that the exhaust gas purification catalyst is provided parallel to and facing the radiation window, and this structure also has the same effect as the previous embodiment.

Effects of the Invention As described above, according to the hot air heater of the present invention, the surface facing the radiation window of the exhaust gas purification catalyst provided in the exhaust gas passage of the combustion section is efficiently heated by the combustion gas, so that the hot air heater of the present invention can reduce red-hot temperature. It has the advantage of being able to perform more effective radiant heating. In addition, if the combustion gas is configured to be released from the opening of the canopy of the combustion section to the hot air path formation body as in the embodiment, the combustion noise generated by combustion is also released upward from the opening of the canopy, so the hot air path The formed body has the effect of producing a sound insulation effect and reducing noise.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of a hot air heater according to an embodiment of the present invention, Fig. 2 is a longitudinal sectional view of a hot air heater according to an embodiment of the present invention, and Fig. 3 is a longitudinal sectional view of a hot air heater according to an embodiment of the present invention. FIG. 11...Main body, 12...Radiation window, 15
...... Burner, 17... Combustion part, 18.
...Radiation window, 19...Canopy, 19a...
...Opening, 22...Exhaust gas purification catalyst. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3

Claims (4)

[Claims] (1) A main body having a radiation window on the front surface, a combustion section provided in the main body, a canopy covering the upper surface of the combustion section, and an exhaust gas purification catalyst provided in the exhaust gas passage of the combustion section, This hot air heater has a radiant window in the combustion section that faces the radiant window of the main body, and an exhaust gas purification catalyst with the surface that is first hit by the combustion gas facing the radiant window. (2) The hot air heater according to claim 1, wherein the canopy of the combustion section has an opening through which exhaust gas that has passed through the exhaust gas purification catalyst passes, and this is used as an exhaust gas passage. (3) The hot air heater according to claim 1 or 2, wherein the exhaust gas purification catalyst is inclined from the front to the back and from the top to the bottom. (4) The hot air heater according to claim 1 or 2, wherein the exhaust gas purification catalyst is arranged parallel to the radiation window.