JPS5824748A - Hot-air heating apparatus - Google Patents

Abstract

PURPOSE:To reduce NOx, and to improve the efficiency of heating by forming the combustion plate of a combustion apparatus by a porous sinter while disposing a transparent body to a box body section opposite to a flame. CONSTITUTION:Hot-air blowoff ports 1A are shaped in front of the upper section of the box body 1 and suction holes 1B to the back of the upper section, and indoor air is sucked from the suction holes 1B, and forwarded to the hot- air blowoff port 1A side through the upper section of the box body 1. The combustion plate 9 of a combustor 5 in the combustion apparatus A is formed by the porous sinter while transparent heatproof glass 3 is mounted to the front section of the outer box 1 opposite to the flame. A hollow cylindrical reflecting plate 4 is set up so as to surround the combustion plate 9 of the combustion apparatus A, a section opposite to the heatproof glass 3 is notched, and a window 4A is formed to the section. Accordingly, combustion can be conducted efficiently.

Description

[Detailed description of the invention] This invention relates to a new hot air heater.

In general, hot air heaters mainly include a box body with a hot air outlet,
It is comprised of an air blower that blows air toward the hot air outlet, and a combustion device that is provided inside the box body and heats the air sent by the air blower.

By the way, conventional combustion devices generally form a flame port between the combustion plate and the carburetor cylinder, or in the combustion plate itself, and eject a mixed gas of a large amount of fuel and combustion air from this flame port to perform combustion. It is true. However, in such a combustion device, the flame temperature becomes high, so four amounts of No. are generated, and if the combustion device is an open type, the No. is released into the room, which is not good for health.

In addition, the combustion plate of the combustion device is formed from a sintered body with no air permeability, and a burnt plate is used with a large number of linear small flame ports extending from the surface on the side of the mixing chamber to the outer surface, and the flame and the Schbank plate are used. Some devices are also used that aim to reduce NOx by increasing the contact area of K and lowering the flame temperature.

However, even in a combustion device using a Schpunk plate, there is a limit to how many small flame ports can be configured, so the N
o.Although plans were being made to improve the situation, there was not enough of it.

Furthermore, in conventional hot air heaters, the outer box that houses the combustion device is made of a metal plate, and only the hot air outlet is opened at the top or bottom of the outer box, which effectively extracts the radiant heat from combustion. I couldn't do that.

This invention was developed to solve the above-mentioned problems, and the combustion plate of the combustion device is made of a porous sintered body, and a transparent body is arranged in the box part facing the flame of the combustion device. The present invention aims to provide a hot-air heater that can achieve low No. 2 and effectively extract radiant heat by having a configuration in which the heat is removed.

An embodiment of the present invention will be described below with reference to FIG. 1H and FIG. 3.

That is, in Figures 1 and 2, (2) is a box body with a hot air outlet (FA) at the upper front and an intake hole (IB) at the upper back, and (2) is an air intake hole in the box body (1). The blower installed in section (1B) sucks indoor air through the intake hole (IB) and blows it through the upper part of the 9-box body (1) to the hot air outlet (for one person). (3) After the welfare (A) is the combustion device built into the lower part of the box body (1), the detailed structure of which will be described later using Figure 3. (4) The combustion plate of the combustion device) (9) is a mirror-like hollow cylindrical reflector whose inner surface is aluminized, and the part facing the heat-resistant glass (3) is cut out, and a window part (4) is provided in this part. It is formed.

Figure 3 shows the detailed structure of the above-mentioned combustion device. A preheating heater is embedded in the wall. (8) is a diaphragm plate provided at the upper opening of the vaporizing cylinder (6), and 6 (9) is a mixing chamber (6A) with a diaphragm hole (8A) in the center. ), that is, a substantially hollow conical combustion plate disposed at the upper opening of the vaporization cylinder (6), which includes the above-mentioned vaporization cylinder (6) and heater (7).

Together with the diaphragm plate (8) and the diaphragm plate (8), it constitutes the combustor.

The combustion plate (9) is made of a porous sintered body such as ceramic, which is similar to a hardened sponge, and unlike the conventional combustion plate, it has a straight line from the mixing chamber side surface to the outer surface. There is no flame port, it exists in the sintered body itself. A labyrinth of extremely small ventilation holes that run intricately from the mixing chamber side surface to the outside surface are used as flame ports.

Also, install the vaporizer cylinder (6A) so that one end faces into the mixing chamber (6A).
) a nozzle connected to the wall, ai+ is this nozzle Q(1
The air pipe connected to the air pipe I is connected to the combustor (5) connected to the air pipe I.
) View into the mixing chamber (6m) through the side opening.

The other end is connected to one end of an Orice pipe 11, which will be described later. This is an oil level device that regulates the liquid fuel supplied to the alpha combustor (5) at a predetermined level, and an oil reservoir is formed inside by a partition (15A). The ring is an orifice tube, a?, with one end immersed in the oil sump of the leveling device and the other end connected to the needle shaft as described above. Reference numeral 1 denotes a static pressure return pipe, one end of which extends above the constant oil level vessel, and the other end connected to the air pipe I. ae Hiro oil pipe, one end is a constant oil level device (c)
The electromagnetic pump for oil feeding is installed in the middle of the Omti oil feeding pipe, the other end of which is connected to the bottom of the oil sump, and the other end is connected to the bottom of the Subtank shaft. (2) A cartridge tank for storing liquid fuel, which is placed on the sub-tank α ring.

The combustion device is constructed as described above.

Next, to explain the operation of Jin's hot air heater, first turn on the power switch (not shown) to energize the heater (7).
The wall of the vaporizer cylinder (6) is preheated to the temperature required for vaporizing the liquid fuel. When preheating is completed, the blower (2) is driven and the oil level regulator tJQ is activated through the air pipe (11) and the static pressure return pipe aη.
Blow air inside. Combustion air blown into the air pipe (II) is ejected into the mixing chamber (6A) through the nozzle O (I).Meanwhile, the electromagnetic pump (2) is also driven, and the combustion air is stored in the sub tank 09 from the tank (2). The liquid fuel is supplied to the oil sump in the level regulator (2) through the oil supply control.The liquid fuel supplied to the oil sump in the level regulator 0!
5A), it overflows, returns to the oil pipe through the overflow pipe, is pumped up again by the electromagnetic pump (2), and supplies the fuel consumed by combustion, which will be described later, to the tank. Keep the oil level constant.

At this time, air is blown into the constant oil level device (c) through the static pressure return pipe, so pressure C) is applied to the oil level by this air, pressing the oil level, and liquid fuel is passed through the oriice pipe ae to the needle a41. supply to. Since the combustion air is ejected from the nozzle 01, the liquid fuel supplied to the needle a4 is atomized by the shear force of this air flow, mixes with the combustion air, and spreads into a conical shape υ. Vaporizer cylinder (6)
It collides with the inner wall and is vaporized.

The heated and vaporized liquid fuel is mixed with the surrounding combustion air and collected in the throttle hole (8) of the throttle plate (8) to make the mixed concentration uniform. 8
) is ejected from the throttle hole (8A).

At this time, in this invention, as mentioned above, the combustion plate (
9) is made of a porous sintered body such as ceramic, similar to a hardened sponge.

Unlike conventional combustion plates, there is no linear flame port from the mixing chamber side surface to the outer surface, but there is one in the sintered body itself. Since the labyrinth-like extremely small ventilation holes intricately extending from the surface of the mixing chamber to the outer surface are used as flame openings, It reaches the outer surface of the combustion plate (9) through the pores and is ignited by a predetermined ignition means on the entire surface of the combustion plate (9).

It burns red-hot, enveloping the entire surface.

Therefore, the contact area between the combustion plate (9) and the flame is greatly increased compared to the case where a conventional schbank plate or the like is used, and the flame temperature is lowered, resulting in a significantly lower No.

Also, as the combustion plate (9) becomes red hot due to combustion, a large amount of infrared rays are emitted from the surface.The heat generated by this combustion is blown away by the blower (2) as shown in Figures 1 and 2. The air is blown out through the hot air outlet (IA), and is reflected by the reflector (4) around the combustor (5), causing damage to the window (4) of the reflector (4) and the transparent glass ( 3
) and heats the room with both so-called warm air and radiant heat.

In the above embodiment, the contact area between the flame and the combustion plate (9) is greatly increased.

In order to increase the combustion area in a limited space, the fuel may be gas fuel instead of liquid fuel.As described above, according to the present invention, the combustion plate of the combustion device is made of a porous sintered body. Along with configuring.

Since a transparent body is placed in the box part facing the flame of the combustion device, the contact area between the flame and the combustion plate is greatly increased, which results in significantly lower NOx compared to conventional systems. Since it can also extract radiant heat, heating efficiency is greatly improved.

Further, according to the present invention, since the reflector plate is provided so that the flame of the combustion device is interposed between the reflector plate and the transparent body, radiant heat can be extracted in a good manner.

Therefore, heating efficiency can be further improved.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a hot air heater according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line I-1 in FIG. 1, and FIG.
It is a diagram showing in detail the combustion device incorporated in the hot air heater shown in the figure. In addition, the same parts in the figure are shown with the same numbers, (1) is a box body,
(IA) a Warm air outlet, cutting) Delivery mode, (8) is heat-resistant glass, (4) is a reflector, (A) is a combustion device, ((to) is a combustor, (6) is a vaporization tube, (6A) is a mixing chamber,
(9) is a combustion plate. Agent Shin Kuzuno −

Claims (1)

[Scope of Claims] (1) A box body having a hot air outlet, a blower provided in the box body and blowing air toward the hot air outlet, and a blower provided in the box body and blowing air by the blower. In a hot-air heater equipped with a combustion device that warms air, the combustion device is installed at the opening of a mixing chamber that mixes fuel and combustion air, and is made of a porous sintered body, and the small pores of the combustion device are It also includes a combustion plate that burns the ejected mixed gas on its surface. This hot air heater consists of a transparent body placed in the box part facing the flame of this combustion device. (2) The hot air heater according to claim 1, wherein the combustion plate is container-shaped. (3) The hot air heater according to claim 2, wherein the combustion plate is conical. (4) A box body having a hot air outlet; A hot air heater that includes an air blower that blows air toward a hot air outlet, and a combustion device that is provided inside the box body and that warms the air sent by the blower, wherein the combustion device is used for producing fuel and combustion. A combustion plate made of a porous sintered body and combusts the mixed gas ejected from its small pores on its surface is provided at the opening of the mixing chamber for mixing with air. A hot air heater comprising: a transparent body disposed in a box portion facing the flame of the combustion device; and a reflective plate provided within the box so that the flame of the combustion device is interposed between the reflective plate and the transparent body. . (5) The hot air heater according to claim 1, wherein the reflecting plate surrounds the combustion plate and has an open window in a portion facing the transparent body. (6) The hot air heater according to claim 4 or 5, wherein the combustion plate is container-shaped. (7) The hot air heater according to claim 6, characterized in that the combustion plate is shaped like a cone.