JPH03113236A - Petroleum fan heater - Google Patents

Abstract

PURPOSE:To cool an upper part of a front wall of a combustion chamber and to prevent a flame disturbance or flame falling by a method wherein a secondary air is taken separately from a side wall of a combustion chamber and the taken air is uniformly supplied from an upper part of the front wall of the combustion chamber. CONSTITUTION:An air box 70 is arranged at an upper part of a front wall 12 of a combustion chamber 10, and air in walls to ports 71 for an air box 70 are arranged at both side walls 15 and 15 of the combustion chamber 10. A flow regulator plate 72 having several small holes 72a is fixed to a front surface of the air box 70. Air passed through air inlets 71 from the side walls 15 is flow regulated by several small holes 72a distributed uniformly in the flow regulating plate 72 as secondary air. The air is supplied in the combustion chamber 10. The secondary air got from a lower part of the burner 20 can be eliminated by the secondary air got from the upper part of the front wall 13. Then, a flame disturbance or a flame falling can be prevented.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a petroleum fan heater.

<Prior Art> Fig. 3 shows a side view of the main parts of the internal structure of a conventional oil fan heater. A combustion chamber IO is provided in a main body case (not shown), and a cross flow fan 30 for blowing out hot air is provided below the combustion chamber IO. An oil vaporizing burner 20 is provided in the combustion chamber 10, and a common intake port 41 for primary air and secondary air is provided at the lower part of the rear wall 11 of the combustion chamber 10. A secondary air intake port 42 is provided above the position of the oil vaporizing burner 20. The air taken into the lower part of the combustion chamber 10 from the intake port 41 is
Further, the air is taken into the oil vaporization burner 20 together with the vaporized oil gas, and the remaining part of the air rises as secondary air from the upward opening 43 in the front and is used for combustion. 50 is a peephole.

The high-temperature exhaust gas generated by the combustion of the oil vaporizing burner 20 is sucked downward from the ceiling 12 of the combustion chamber 10 by the fan 30 between the front wall 13 of the combustion chamber 10 and the hot air cover 60. , is blown forward.

<Problem to be solved by the invention> However, in the above-mentioned conventional device, the secondary air is
In addition to taking in from the back side of the
Since the airflow is taken in from the bottom of the burner 20 to the front of the burner 20 through the airflow, the flame fluctuates greatly, and as a result, the upper part of the front wall 13 of the combustion chamber shown by diagonal lines in FIG. 3 is heated to a high temperature. was there. Furthermore, when the front wall 13 of the combustion chamber is made into a double structure as a countermeasure against this high temperature,
The peephole 50 also has to be double-layered, resulting in a complicated structure and high cost, and also has the disadvantage that the peephole 50 is difficult to see.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to eliminate the drawbacks of the above-mentioned prior art and provide an oil fan heater that can supply secondary air without heating the front wall of the combustion chamber to high temperatures and with less flame fluctuation or collapse. .

Means for Solving the Problems> The oil fan heater of the present invention that achieves the above object has a combustion chamber having an oil vaporizing burner inside, a hot air blowing fan below the combustion chamber, and a combustion A primary air port for combustion is provided at the bottom of the rear wall of the combustion chamber, and a secondary air port is provided above the position of the oil vaporizing burner on the rear wall of the combustion chamber, and the high temperature gas generated within the combustion chamber is combusted from the ceiling of the combustion chamber. The oil fan heater sucks the front of the chamber downward with the fan and then blows it out forward, and the secondary air is taken in separately from the side wall of the combustion chamber and is uniformly distributed from the upper part of the front wall of the combustion chamber. It is characterized by being configured to supply

<Operation> According to the above feature of the present invention, in addition to the secondary air from the rear wall of the combustion chamber, air taken in from the side wall of the combustion chamber is uniformly supplied from the upper part of the front wall of the combustion chamber as secondary air. As a result, the upper part of the front wall of the combustion chamber, which was conventionally heated to a high temperature, is cooled.

This also eliminates the need to take in secondary air from below the burner, eliminating flame turbulence and collapse. Of course, there is no need for the front wall of the combustion chamber to have a double structure including the viewing window.

<Example> Figure 1 is a side view of the internal configuration of the main parts of a kerosene fan heater showing an example of the present invention, and Figure 2 shows the combustion chamber in the first
Figure A is a perspective view seen from the arrow direction.

A cross flow fan 30 is provided below the combustion chamber 10.
The high-temperature combustion exhaust gas from the oil vaporizing burner 20 is sucked downward from the ceiling 12 of the combustion chamber 10 between the front wall 13 and the hot air cover 60 by the fan 30, mixed with cold air appropriately, and then sent forward. The point in which the air is blown out is the same as in the conventional case.

In this embodiment, the combustion chamber 10 is completely partitioned vertically by a partition plate 14 at the burner 20 position, so that secondary air is not supplied from below the burner 20, and primary air is supplied to the lower part of the rear wall 11. Only the intake port 44 is provided. A secondary air intake port 42 is provided in the rear wall 11 above the position of the burner 20, as in the conventional case.

On the other hand, in this embodiment, an air box 70 is provided above the front wall 13 of the combustion chamber 10, and lower air intakes 1 to the air box 70 are provided on both side walls 15, 15 of the combustion chamber 10. There are many small holes 72 on the front of the air box 70.
A rectifying plate 72 provided with a is attached.

The air taken into the air box 70 from the side wall 15 through the air intake lower 1 is rectified as secondary air by a large number of uniformly arranged small holes 72a of the rectifying plate 72, and is supplied into the combustion chamber 10. be done. This secondary air from the upper part of the front wall 13 eliminates the need for secondary air from below the burner 20, and prevents flame disturbance and collapse. Of course, since the secondary air rectified through the rectifying plate 72 is supplied from the upper part of the front wall 13, the flame is not disturbed by this. The front wall 13 is cooled by the secondary air taken into the air box 70 and blown out.

<Effects> The present invention has the above configuration, and according to the oil fan heater according to claim 1, secondary air is separately taken in from the side wall of the combustion chamber, and is uniformly supplied from the upper part of the front wall of the combustion chamber. As a result, the upper part of the front wall of the combustion chamber, which has conventionally been at a high temperature, is cooled. This also eliminates the need to take in secondary air from the bottom of the burner, preventing flame disturbance and collapse. Of course, since air is uniformly supplied from the upper part of the front wall, there is no disturbance of the flame due to this. Furthermore, there is no need for the front wall in which the viewing window is provided to have a double structure.

[Brief explanation of drawings]

Fig. 1 is a side view of the internal configuration of the main parts of a kerosene fan heater showing an embodiment of the present invention, Fig. 2 is a perspective view of the combustion chamber as seen from the direction of arrow A in Fig. 1, and Fig. 3 is a FIG. 2 is a side view of the main parts of the internal configuration of a conventional oil fan heater. 10: Combustion chamber 11: Rear wall of the combustion chamber 12: Ceiling of the combustion chamber 13: Front wall of the combustion chamber I4: Partition plate 15: Side wall of the combustion chamber 20 Oil vaporization burner 30: Fan 42: Secondary air intake 44 :Primary air intake 50: Peephole 60: Warm air cover 70: Air box 71: Air intake lower 2: Rectifier plate

Claims (1)

[Claims] (1) It has a combustion chamber with an oil vaporizing burner inside, a fan for blowing hot air below the combustion chamber, and a primary air port for combustion in the lower part of the rear wall of the combustion chamber. A secondary air port is provided above the position of the oil vaporizing burner, and the high-temperature gas generated in the combustion chamber is sucked from the ceiling of the combustion chamber downward in front of the combustion chamber by the fan, and then blown out to the front. 1. A kerosene fan heater characterized in that secondary air is taken in separately from the side wall of the combustion chamber and is uniformly supplied from the upper part of the front wall of the combustion chamber.