JPS5813239Y2 - Combustion hot air heater - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a combustion hot air heater that has an improved heat shielding structure for a combustion motor.

Recently, as a heater, a combustion section and a heat exchanger C are installed in the fuselage a as shown in Fig. 1, and fuel is supplied to the combustion section and air is blown by a combustion motor d to perform combustion. The combustion hot air type is widely used in which the combustion exhaust gas is guided to the heat exchanger C to generate warm air and heat the room (Utility Model No. 50-877).
No. 38).

The combustion motor d blows air into the combustion section and at the same time forcibly discharges the exhaust gas from the combustion section to the outside.

However, the combustion section and the combustion motor d are provided in parallel, and therefore the combustion motor d may receive radiant heat from the combustion section and overheat, resulting in burnout or the like.

For this reason, the combustion motor d is surrounded by a case e, and the case e provides heat insulation to the combustion motor d to prevent burnout and the like.

However, using the case e exclusively for heat shielding as described above has the disadvantage that assembly is troublesome and the product becomes expensive.

This invention was made with attention to these points, and its purpose is to provide a combustion hot air heater that is easy to assemble and is inexpensive.

The structure of this invention is that the exhaust pipe that guides the exhaust gas from the combustion section to the outside is formed into a flat shape with an area larger than the size of the combustion motor that performs air supply and exhaust for combustion, and this flat exhaust pipe is used as described above. The present invention is characterized in that the combustion section and the combustion motor are disposed between the combustion section and the combustion motor so that they face each other.

According to such a configuration, radiant heat from the combustion section to the combustion motor is blocked by the flat exhaust pipe disposed between the two, and therefore overheating of the combustion motor can be prevented.

The heat shielding member is not a separate member dedicated to heat shielding, but an exhaust pipe that is naturally necessary for this type of heater, so it is not particularly troublesome or expensive to assemble. This effect is achieved.

An embodiment of this invention will be described below with reference to FIGS. 2 and 3.

In the figure, reference numeral 1 indicates a box-shaped body of a heater, and a combustion tube 2 serving as a combustion section is provided within this body 1.

This combustion tube 2 is equipped with a pot-type burner 3 at the inner bottom, and a fuel supply pipe 4 from a fuel tank (not shown) is connected to the burner 3.
is introduced via the oil amount regulator 5.

A fixed amount of fuel such as kerosene is supplied to the burner 3 via an oil amount regulator 5, and as it vaporizes, it is ignited by an ignition heater 6 and combusted while being controlled by a combustion ring 7.

A casing 8 is provided on one side of the fuselage 1, and the interior thereof is divided into a motor chamber 9, an air supply chamber 10, and an exhaust chamber 11. A combustion motor 12 is installed in the motor chamber 9. The rotating shaft faces the air supply chamber 10 and the exhaust chamber 11.

The air supply fan 1 is attached to this rotating shaft in the air supply chamber 10.
3 is an exhaust chamber 11, and an exhaust fan 14 is coaxially attached thereto.

The air supply chamber 10 is communicated with the outside of the house via an air supply path 15 passing through the motor room 9, and the exhaust chamber 11 is communicated with the outside of the house via an exhaust path 16.

Furthermore, an air supply pipe 17 leads out from the air supply chamber 10 and is connected to the lower part of the burner 3.

Additionally, a heat exchanger 18 is provided at the upper end of the combustion tube 2 and communicates with the combustion tube 2.
is attached, and an exhaust pipe 19 is connected from the end of this heat exchanger 18.
The end of the exhaust pipe 19 is connected to the end face of the exhaust chamber 11 and communicates with the chamber.

As shown in FIG. 3, this exhaust pipe 19 is formed into a flat shape having an area larger than the size of the combustion motor 12, and is interposed between the combustion motor 12 and the combustion tube 2 so as to face each other. The flat surface separates the two.

A circulation fan 20 is provided at the back of the heat exchanger 18,
An abnormal temperature sensing element 21 made of a temperature fuse or the like is attached to a part of the fan 20 in the air flow region and facing the combustion pipe 2, for example, in the middle part of the side surface of the exhaust pipe 19.

This element 21 senses the ambient temperature, and when the temperature reaches a certain temperature or higher, the combustion operation circuit is opened and the operation is stopped.

Note that 22 is an opening window formed on the front surface of the body 1 for discharging hot air.

The motor 12 is driven to rotate the air supply fan 13 and the exhaust fan 14, and the air supply fan 13 sucks outdoor air into the air supply chamber 10 through the air supply path 15, and this air is Air is blown to the lower part of the burner 3 through the air supply pipe 17.

The air then flows into the burner 8 through a number of small holes drilled in its circumferential surface and is consumed as combustion air.

Further, exhaust gas accompanying combustion within the combustion tube 2 is sucked into the exhaust chamber 11 via the heat exchanger 18 and the exhaust pipe 19 by the rotation of the exhaust fan 14, and is also exhausted to the outside via the exhaust path 16.

On the other hand, the indoor air of the house is circulated by the circulation fan 20, and as it passes around the heat exchanger 18, it exchanges heat with the heat exchanger 18 to become warm air, heating the room.

A flat exhaust pipe 19 is interposed between the combustion motor 12 and the combustion tube 2, and the combustion motor 12 and the combustion tube 2 are isolated by the flat surface, so that the radiant heat of the combustion tube 2 is This does not directly affect the combustion motor 12, and therefore, it is possible to reliably prevent the combustion motor 12 from unexpectedly overheating and causing burnout or the like.

As explained above, according to this invention, the combustion motor can be heat-shielded using the exhaust pipe, and a separate heat-shielding member is not required, so assembly is not complicated or expensive. It has the effect of not being there.

[Brief explanation of the drawing]

Figure 1 is a sectional view showing a conventional combustion hot air heater, Figure 2 is a configuration diagram showing an embodiment of this invention, and Figure 3 is Figure 2 I.
It is a block diagram which shows the cross section along the I-II line. 2... Combustion cylinder (combustion part), 9... Combustion motor, 19... Exhaust pipe.

Claims (1)

[Scope of utility model registration request] The exhaust pipe that guides the exhaust gas from the combustion section to the outside is formed into a flat shape with an area larger than the size of the combustion motor that performs air supply and exhaust for combustion, and this flat exhaust pipe is connected to the combustion section and the combustion motor. A combustion hot air heater characterized in that the motor and the heater are arranged so as to face each other.