JPS61125543A - Warm-air room heating machine - Google Patents

Abstract

PURPOSE:To heat catalyst for cleaning exhaust gas into red-hot condition uniformly, make combustion gas clean and improve radiation heating effect by providing an inclined piece, inclined toward obliquely forward and upward, at the upper part of a combustion tube. CONSTITUTION:Combustion gas from a burner 34 ascends under being guided by the combustion tube 37 and flows into a warm-air path forming body 45 from a window 38 for radiation and the opening 39 of a top lid 41 through the catalyst 43 for cleaning exhaust gas, then, is mixed with airflow from a fan 44 and is blown out of a warm-air blow-off port 33. In this case, the top lid 41 is provided with the inclined piece 40, therefore, air from the fan 44 flows along the inclined piece 40 as shown by an arrow sign B in the diagram and will never flow into the combustion tube 37 as before. Accordingly, the combustion gas ascends uniformly along the combustion tube 37 and the catalyst 43 for cleaning exhaust gas is heated uniformly into red-hot condition whereby capacity for cleaning exhaust gas may be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to hot air heaters such as oil fan heaters. .

Conventional technology Generally speaking, this type of heater heats the room by blowing out 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 into the room. In FIG. 4, reference numeral 5 denotes an exhaust gas purifying catalyst, which is provided to make the combustion gas from the burner 6, which is blown out as warm air, cleaner. 7 is a hot air outlet provided below the main body 1;
8 is a fan for hot air, and 9 is a hot air path forming body. Also 3
A is a radiation window provided in the combustion tube 3.

In the above configuration, the combustion gas from the burner 6 is transferred to the combustion tube 3.
It rises while heating the incandescent body 4, flows out into the hot air path forming body 9 through the exhaust gas purifying edge [-5, mixes with the wind from the fan 8, and is discharged from the hot air blowing lower. Blow out. Here, the heat rays of the heated red-hot body 4 are radiated into the room via the radiation window 3a and the radiation window 2, thereby performing radiation heating.

However, as mentioned above, this type requires the incandescent element 4 for radiant heating, which increases the cost.
Since the incandescent body 4 is originally used in a high-temperature combustion gas, it has been subject to thermal deterioration, such as rust due to oxidation, and thermal deformation, resulting in inconveniences such as uneven red heat and damage.

Therefore, as shown in Fig. 3, the exhaust gas purification catalyst 23 is
We considered a structure in which the exhaust gas purifying probe #X23 is provided opposite to the exhaust gas purifying probe #X23, and red heat emitted from the exhaust gas purifying probe #X23 is radiated to the outside through a radiation window. To explain Figure 3 below, 11 is the main body,
A radiation window 12 is provided at the upper part of the front surface, and a hot air outlet 13 is provided below the radiation window 12. 14 is a burner provided in the main body 11 via a stand 15, and 16 is a burner case thereof. 17 is a combustion tube, and a radiation window 18 is provided at the upper front surface facing the radiation window 12.
The upper part is closed with a canopy 20 having an opening 19 at the front, and a frame 21 is provided in the combustion tube 17 so as to surround the radiation window 18. The frame body 21 also has an opening 22 on the back side facing the radiation window 18. Reference numeral 23 designates a honeycomb-shaped exhaust gas purifying catalyst disposed in the opening 22 of the frame 21, and is fixed to the opening 22 by bending a claw piece 21a cut and raised from the opening edge of the frame 21. Further, 24 is a hot air path forming body, and 25 is a fan for hot air.

In the above configuration, the exhaust gas purifying catalyst 23 is connected to the burner 14.
It is heated by the combustion gas from the room and becomes red hot, and the heat rays are radiated into the room through the radiant window 18 and the radiant window 12 to perform radiant heating. In other words, the exhaust gas purifying catalyst 23 also functions as a conventional metallic red-hot body. As a result, there is no need for a special member such as an incandescent body, which reduces costs and has the advantage that the exhaust gas purifying catalyst does not undergo thermal deterioration unlike metal incandescent bodies.

Problems to be Solved by the Invention However, in the configuration shown in FIG.
8 and the opening 19 of the canopy 20 into the hot air path forming body 24 and mixes with the air from the fan 25.
Air flows into the combustion tube 17 as shown by arrow A. This increases the pressure loss inside the combustion tube 17,
Since the combustion gas passes through the exhaust gas purification catalyst 23 in a biased manner, the passage speed increases, and the exhaust gas purification catalyst 23
In this case, the purification ability may not be fully demonstrated, and the combustion gas may not be purified. Also, at the same time that the combustion gas flows unevenly inside the combustion tube 17, the wind of arrow A
Since the exhaust gas purifying catalyst 23 is cooled, the exhaust gas purifying catalyst 23 does not uniformly become red hot, and the effect of the red hot body is also reduced.

In view of the above problems, the present invention provides a hot air heater that improves exhaust gas characteristics and exhibits a wide range of radiant heating effects.

Means for Solving the Problems In order to solve the above problems, the hot air heater of the present invention is provided with a catalyst for purifying gas in the combustion tube 17 facing the radiation window,
The upper part of the combustion cylinder is disposed at a position that substantially coincides with the center of the fan for hot air, and the upper part of the combustion cylinder is provided with an inclined piece that faces diagonally forward and upward.

Effect of the Invention With the above-described configuration, the air from the hot air fan flows along the obliquely forward and upwardly sloping piece in the upper part of the boundary area, so that it does not flow into the combustion cylinder, and the pressure loss in the combustion cylinder is reduced. Since the combustion gas can be uniformly raised along the combustion tube, the exhaust gas purifying catalyst can be made red hot uniformly, and the purification of the combustion gas can be improved.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. 31 is a main body having a radiation window 32 at the upper front surface and a hot air outlet 33 below the radiation window 32. 34 is a burner provided in the main body 31 via a stand 35, and 36 is a burner case thereof. Reference numeral 37 denotes a combustion cylinder, which has a radiation window a8 opened at the upper part of the front face opposite to the radiation window 32, an opening 39 at the front part at the upper part, and an inclined piece 40 facing diagonally forward and upward at the rear part with a width equal to the width of the opening a9. A canopy 41 of approximately the same size is placed thereon, and a frame 42 is provided within the combustion tube 37 so as to surround the radiation preparation 38. The upper part of the combustion cylinder 37 is arranged at a position that almost coincides with the center of the fan 44 for hot air.

The frame body 42 also has an opening 42 on the back side facing the radiation window 38.
A honeycomb-shaped exhaust gas purifying catalyst 43 is fixed in the opening 42a by bending claw pieces 42b cut and raised from the frame 42. 45 is a hot air path forming body.

Next, the operation of the configuration of this embodiment will be explained. Combustion gas from the burner 34 is guided to the combustion tube 37 and rises, passes through the exhaust gas purification catalyst 43, flows out from the radiation window 38 and the opening 39 of the ceiling 141 into the hot air path forming body 45, and from the fan 44. The warm air is mixed with the air and blown out from the hot air outlet 33.

Here, since the inclined piece 4o is provided on the canopy 41, the fan 44
The wind flows along the inclined piece 4o as shown by arrow B, and does not flow into the combustion tube 37 as in the conventional case. Therefore, the combustion gas rises uniformly along the combustion tube 37, uniformly heats the exhaust gas purifying catalyst 4, makes it red hot, and improves the purifying ability.

Further, since the entire area of the exhaust gas purifying catalyst 43 becomes red hot uniformly, a wide radiant heating effect can be obtained by the heat rays radiated indoors through the radiant windows 38 and 32.

Effects of the Invention As described above, the present invention is capable of uniformly heating the exhaust gas purifying catalyst to red heat and making the combustion gas cleaner by providing a diagonally forward upwardly sloping piece in the upper part of the combustion cylinder. Moreover, the radiant heating effect can also be improved.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a combustion tube of a hot air heater according to an embodiment of the present invention, Fig. 2 is a sectional view of the same hot air heater, and Fig. 3 is a conventional improvement plan leading up to the present invention. Cross section of hot air heater,
FIG. 4 is a sectional view showing a conventional hot air heater. 31--one main body, 32--one radiation window, 37--combustion cylinder, 40
- one inclined piece, 43- one exhaust gas purification catalyst, 44- one fan, 45- one hot air path forming body. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] The combustion tube includes a main body having a radiation window on the front surface, a combustion tube provided in the main body, and a hot air passage forming body surrounding the combustion tube. In addition to providing a window and a catalyst for purifying exhaust gas, the upper part of the combustion cylinder is located at a position that almost coincides with the center of the fan for hot air,
This hot air heater has a diagonally forward and upwardly sloping piece at the top of this combustion tube.