JPS59131811A - Burner - Google Patents

Abstract

PURPOSE:To positively display the function of puritying the catalyst member even at the time of ignition and extinguishing and perform effective feedback of the exhaust heat to an evaporating member, by positioning the catalyst member in contact with the outer peripheral part of the evaporating body and passing a high temperature exhaust gas through said position. CONSTITUTION:Power is supplied to an electric heater 2 to preheat the evaporating member 1 to a temperature of approximately 300 deg.C. Then, when power is supplied to a blower 16, a pump and an igniter 14, combustion air and fuel are supplied within the evaporating member 1, and the fuel is evaporated to form a premixed gas with air. This pre-mixed gas enters into a rectifying cylinder 4 from the central part of the partition plate 3 and passes through small holes. Then, the pre-mixed gas is injected onto the outer surface of the combustion member 6, and is ignited by the igniter 14 and burnt. Buring flame red-heats the wick of the combustion member 6 formed thinly on the outer surface of the combustion member 6 to above 850 deg.C. The combustion exhaust gas advances from between the combustion member 6 and the outer plate 10 and to between the evaporating member 1 and the guide plate 8, and comes into contact with the catalyst member 12 fixed to the outer peripheral part of the evaporating member 1, and then is exhausted through an exhaust port 9.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention forcibly vaporizes liquid combustion fuel such as kerosene and burns it as a premixed gas with air, which is used as a heat source for home heaters, water heaters, etc. This relates to combustion equipment.

Conventional Structure and Problems Conventionally, a purification catalyst body has been placed in the exhaust gas passage at the tip of the combustion device to reduce Co and HC odors in the exhaust gas. However, at the time of ignition, the temperature of the catalyst 2 page body does not rise, so the catalyst function is not exhibited, which is a problem especially in indoor open type heaters. In addition, after the fire was extinguished, the temperature of the catalyst dropped rapidly, making it impossible to purify the residual gas sufficiently.

OBJECT OF THE INVENTION The present invention solves these conventional problems by ensuring that the purifying function of the catalyst body is exhibited not only during steady combustion but also during ignition and extinguishing, and also effectively transfers exhaust heat to the vaporized body. The purpose is to provide feedback.

Structure of the Invention In order to achieve this object, the present invention places a catalyst body in contact with the outer periphery of the vaporized body, and passes a high-temperature exhaust gas through this part. With this configuration, the catalyst body can be maintained at a temperature above a certain level even during a series of operations from ignition to extinguishing, and the purification function can be exerted, and heat feedback to the four vaporized bodies can also be effectively performed. .

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on the drawings.

1 in FIG. 1 is a cylindrical vaporized body with a bottom, which is preheated by an electric heater 2. 3 is a partition plate fixed to the upper part of the vaporizer 1.

Reference numeral 4 denotes a cylindrical straightening tube having a large number of small holes 5, and a cylindrical combustion body 6 made of a wire mesh tube or the like is located outside of this straightening tube, one end of each of which is connected to the upper part of the vaporization body 1. Reference numeral 7 denotes a disk-shaped cap of the rectifying tube 4 and the combustion body 6. 8 is vaporized body 1
A bottomed cylindrical guide plate provided on the outside of the exhaust gas discharge port 9 forms an exhaust gas discharge port 9. 10 is located at the top of the guide plate 8,
It is a cylindrical outer plate made of heat-resistant glass or the like, and numeral 11 is a disc-shaped cap. Reference numeral 12 denotes a catalyst body made of manganese dioxide or the like as a base material and having platinum or the like supported on its surface.In FIG. 1, fins 13 are formed (in the embodiment shown in FIG.
) is fixed in contact with the outer periphery of the vaporized body 1. 14 is an igniter consisting of a red-hot coil or the like. Reference numeral 16 denotes a blower tube, one end of which communicates with the vaporizer 1, and the other end of which communicates with the blower 16. 17 is a pump that supplies fuel, and 18 is a pipe.

The operation in the above configuration will be explained. First, the electric heater 2 is energized to preheat the vaporized body 1 to about 300'C. Next, blower 16. When the pump and igniter 14 are energized, combustion air and fuel are supplied into the vaporizer 1, and the fuel is vaporized and becomes a premixed gas with air. This premixed gas enters the rectifier cylinder 4 from the center of the partition plate 3, passes through the small holes 5, is ejected onto the outer surface of the combustion body 6, and is ignited by the igniter 14 and combusts. The combustion flame is generated by the combustion body 6 itself, which is thinly formed on the outer surface of the combustion body 6.
It becomes red hot to about 0°C. The combustion exhaust gas advances from between the combustion body 6 and the outer plate 1o to the mass of the vaporization body 1 and the guide plate 8, contacts the catalyst M12 fixed to the outer circumference of the vaporization body 1, and then exhaust gas D9J: - During preheating of the thermal vaporization body 1, the temperature of the catalyst body 12 also rises to about 30°C by conduction. Therefore, it exerts its catalytic function from the time of ignition, and reduces the Co and HC odors that are generated at the moment of ignition. can be achieved.

Also, during steady combustion, the exhaust gas touches the catalyst body 12 and is purified, and the catalyst body 12 is heated to 500 to 600°C.
This heat is conducted to the vaporized body 1, and combustion can be continued even if the electricity to the electric heater 2 is cut off.

Further, even after the fire is extinguished, the catalyst body 12 maintains a high temperature due to the heat capacity of the vaporized body 1, and exhibits a purifying function.

Effects of the Invention In the present invention, the catalyst body is located in contact with the outer circumference of the vaporized body, and the high-temperature exhaust gas is passed through this area. (1) Since the catalyst body is preheated together with the vaporized body from the time of ignition, Co tends to occur in large quantities at the moment of ignition.

It can effectively purify HC and odor, eliminating the unpleasantness and cleaning of exhaust gas during ignition, which has been a drawback of open-type heating equipment.

('4) Even during steady combustion, the catalyst body itself receives heat as the exhaust gas is purified, and this is fed back to the vaporization body, making it possible to achieve stable fuel vaporization and power savings.

(Seaweed) Even after the fire is extinguished, the retained heat of the vaporized body is added to the catalyst body and it maintains a high temperature for a long time, so the unburned gas is sufficiently purified, making it clean and eliminating discomfort just like when it is ignited.

(After burning on the outer surface of the 4 combustion body, the exhaust gas flows out from the outlet provided on one side of the flow guide plate to the vaporization body side,
The flow of exhaust gas is rectified by the large number of fins or small holes in the catalyst body, resulting in uniform purification and stable combustion.

[Brief explanation of drawings]

FIG. 2 of the first row is a sectional view showing an embodiment of the present invention. 1... vaporized body, 2... electric heater, 4
...Fluid regulator, 6...Combustion body, 10...
... Outer plate, 12 ... Catalyst body. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2

Claims (1)

[Claims] A fluid regulating body having a plurality of small holes is connected to the vaporized body preheated by an electric heater, a combustion body is provided outside the fluid regulation body, and an outer plate is provided outside the combustion body, and a gap between the combustion body and the outer plate is provided. A combustion device in which an exhaust gas passage is formed, and a catalyst body through which exhaust gas from the exhaust gas passage passes is provided in contact with an outer peripheral portion of the vaporized body.