JPH0112123Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an indoor exhaust type combustion device, and aims to minimize pollution caused by indoor exhaust gas and further improve the heating effect.

In general, indoor exhaust type combustion devices have caused problems with exhaust pollution. Conventionally, passive means have been used for this purpose, such as relying on catalysts or relying on the user to pay attention to ventilation, but the former has problems in terms of cost and the latter in terms of reliability.
In addition, indoor exhaust type combustion devices can be roughly classified into two types: natural convection type and forced convection type. In the case of a natural convection type, the exhaust gas rises upward and does not directly hit the human body. In this respect, the forced convection type has the disadvantage that concentrated exhaust gas is blown directly onto the human body by the convection blower.

On the other hand, in the natural convection type, hot air accumulates in the upper part of the room.
It has the disadvantage of being cold, and for this reason, natural convection type devices usually tend to burn a larger amount than forced convection type devices. In such a natural convection type, the amount of combustion is increased to compensate for poor indoor temperature distribution, so the degree of exhaust gas pollution that affects the human body is not small.

The present invention significantly improves the conventional drawbacks, and focuses in particular on the phenomenon of indoor ventilation, which has not been considered in the past.

One embodiment will be described below with reference to the drawings.

In the figure, 1 is an outer box, 2 is a combustion section built into the outer box 1, 3 is a heat exchanger, and 4 is a convection blower. The downstream end of the heat exchanger 3 is an exhaust port 5 on the top plate of the outer box 1, and the area around the exhaust port 5 is a cooling port 10. Further, the inside of the heat exchanger 3 is an exhaust passage 6. The fins 7 are provided in the heat exchanger 3 and transfer combustion heat to the convection air.

Outer box 1, front temperature outlet 8, and convection blower 4
The heat exchanger 3 is provided in the convection air passage 9 between the two. Further, the cooling port 10 is connected to the convection air passage 9, and a portion of the convection air is blown upward from the cooling port 10.

In the above configuration, the liquid fuel is combusted in the combustion section 1, and the exhaust gas ascends through the exhaust passage 6 and exits at the exhaust port 5.
more released. During this time, exhaust heat is given to the convection air through the heat exchanger 3.

On the other hand, the exhaust gas released from the exhaust port 5 rises in the room and accumulates near the ceiling A.

This is because the exhaust temperature is always higher than room temperature.
In addition, the high temperature convection air released from the hot air outlet 3 flows horizontally to the floor surface and directly warms the human body. In this way, the present invention separates the temperature of the exhaust gas and the exhaust components, and mainly applies only the temperature to the human body.In this way, it is possible to reduce the amount of concentrated exhaust gas (especially when a large amount is generated during ignition/extinguishing). (exceeding the sensory discernible concentration) has the advantage of not perceiving any odor because it accumulates on the ceiling and is diluted. In particular, since a forced upward flow is formed around the exhaust port 5 by the air blown from the cooling port 10,
Exhaust air such as odors quickly reaches the ceiling without wafting into the room. This odor is naturally ventilated, reduced, and diluted, so it no longer feels strong. Furthermore, this cooling lowers the exhaust temperature, making it safer. In addition, since there is forced convection, the feet are warm, and there is no need for excessive combustion as in the conventional natural convection type, so the amount of exhaust gas generated can also be reduced. Furthermore, the present invention also has the following ventilation effects.

In other words, indoor ventilation during heating is generally caused by the temperature difference between indoors and outdoors, but indoor high-temperature air
It flows out of the room through an opening in the ceiling or a wall near the ceiling, and the outflow flows into an opening near the floor. Such natural ventilation always exists regardless of whether the occupant intends it or not, but the present invention mainly allows exhaust components to join this natural ventilation flow,
This reduces the amount of temperature components that leak out of the room.

That is, after the exhaust gas loses its exhaust heat in the heat exchanger 3, it rises, accumulates near the ceiling A, and flows out through an opening in the ceiling A or the like. Note that since forced convection always exists indoors, the indoor air is being agitated over time, but the difference in the indoor concentration distribution of exhaust components does not disappear. Furthermore, when indoor air with a high concentration of exhaust components flows out from an opening near the ceiling A, fresh air flows into the room from an opening near the floor. Due to this phenomenon, when the present invention is adopted, it is possible to reduce the total amount of indoor exhaust components.

In addition, with conventional forced convection type equipment that mixes exhaust gas and convective air inside the outer box and blows it out from the hot air outlet in the front, there is a high concentration of exhaust gas in the lower part of the room, so it is difficult to ventilate. Needless to say, the efficiency is poor, and even if the distribution of exhaust gas components in the room is made uniform by extremely strong forced convection, the ventilation effect will be inferior to that achieved by the present invention.

Furthermore, in the case of the natural convection type as a second conventional example,
It is similar to the present invention in that the exhaust components accumulate near the ceiling, but at the same time, the high-temperature exhaust heat also accumulates in the ceiling, and both the exhaust components and the exhaust heat are released outside through the opening in the ceiling. , which is a disadvantage in terms of heating effectiveness.
Therefore, as mentioned above, this results in an increase in the amount of combustion and an increase in the total amount of exhaust components. As described above, according to the present invention, the exhaust components in the exhaust and the exhaust heat are separated and released into the room, and the former is released toward the ceiling, which is advantageous for ventilation, and the latter is released toward the floor, which is advantageous for heating. Therefore, it exhibits extremely practical effects in terms of indoor pollution and heating effects.

In addition, the exhaust gas exchanges heat with the wind from the convection blower in the heat exchanger, and the temperature decreases before being exhausted from the exhaust port on the top of the outer box. As the rising air mixes with the exhaust gas, the temperature of the exhaust gas not only decreases further, making it safer, but also quickly reaching the ceiling, promoting ventilation, reducing odor, and diluting it so that it no longer feels strong. . In addition, the odor generated during ignition and extinguishing is not directly exposed to the human body, making it more comfortable. Furthermore, unlike the conventional forced convection type, the exhaust gas and convection air are not mixed inside the outer box.
Each part of the appliance will not be corroded by sulfur oxides in the exhaust, and at the same time, the air from the convection blower will not cause disturbance and worsen the combustion condition, and will not generate large amounts of CO and other gas components. .

[Brief explanation of the drawing]

The figure is a sectional view showing an embodiment of the present invention. 1... Outer box, 2... Combustion section, 3... Heat exchanger,
4... Convection blower, 5... Exhaust port, 6... Exhaust passage, 7... Fin, 8... Temperature outlet, 9...
Convection air passage, 10...cooling port.

Claims (1)

[Scope of utility model registration request] A combustion section and a heat exchanger connected downstream of the combustion section are provided in the outer box, and the exhaust port at the end of the heat exchanger faces the opening on the top surface of the outer box to discharge exhaust gas upward into the room. At the same time, the outlet of the flow path of the convection blower provided opposite to the heat exchanger is made into an opening around the hot air outlet on the front surface of the outer box and the exhaust port on the top surface of the outer box, so that the airflow is forced around the exhaust air. A combustion device characterized by forming an upward flow.