JPH028605A - Liquid fuel combustion device - Google Patents

Abstract

PURPOSE:To restrict an excessive large flame and generation of CO and soot and the like when a combustion is rapidly changed from its low combustion to a high combustion by a method wherein air is supplied into a combustion cylinder in cooperation with a wick adjusting means of a liquid fuel combustion device such as an oil heater and the like. CONSTITUTION:A wick 1 is held between a wick inner cylinder 4 and a wick outer cylinder 5 in such a way as it may be moved vertically, an exposure height of an end of an end of a wick into a combustion chamber 11 is varied by a wick adjusting means 14, thereby the amount of combustion is adjusted. An air blower fan 15 is arranged inside the wick inner cylinder 4 so as to generate a flow from a lower part to an upper part in cooperation with the wick adjusting means 14. As the combustion is rapidly varied from a low combustion to a high combustion in view of its amount of combustion, the blower 15 is operated to supply air into the combustion cylinder 3 so as to promote combustion within the combustion chamber 11 and thus to increase a load of combustion. Accordingly, an amount of combustion within the combustion chamber 11 is increased and further it is possible to prevent an occurrence of excessive flame and CO and soot and the like.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a liquid fuel combustion device used for home heating and the like.

BACKGROUND OF THE INVENTION Conventionally, a kerosene stove that has been widely used as this type of liquid fuel combustion device is generally of the type shown in FIG. In FIG. 3, reference numeral 1 denotes a cylindrical lamp wick set vertically and housed in the tank portion 2. 3 is a combustion cylinder placed above the tank portion 2. The lamp wick 1 is held between an inner wick tube 4 and an outer wick tube 5 so as to be vertically movable. Reference numeral 6 denotes a fuel holding section in which liquid fuel is kept at a constant level. The lower end of the wick 1 is immersed in liquid fuel, and the fuel is transferred to the wick 1 by capillary action.
It is sucked up to the tip. The upper ends of the inner core tube 4 and the outer core tube 5 form an inner flame tray 7 and an outer flame tray 8, respectively, and an inner flame tube 9 and an outer flame tube 10 each having a large number of air holes are mounted thereon. During combustion, the tip of the wick 1 is exposed within a combustion chamber 11 formed between an inner flame tube 9 and an outer flame tube 1o, where the fuel is vaporized. 12 is an outer cylinder, and 13 is a transparent cylinder made of glass or the like placed on the outer cylinder 12. Numeral 14 is a wick adjusting means that adjusts the amount of combustion by changing the exposed height of the tip of the wick into the combustion chamber.

In the above configuration, when the lamp wick 1 is ignited, the fuel vaporizes and starts combustion. The fuel continues to vaporize due to combustion heat, and the air necessary for combustion is supplied into the combustion chamber 11 from the air holes of the inner flame tube 9 and the outer flame tube 1o by a thermal draft generated in the combustion chamber 11, and combustion continues. The outer flame tube 10 is heated to become red hot and radiant heat is used for heating, etc.

Problems to be Solved by the Invention In the combustor having such a configuration, the exposed height of the lamp wick 1 is lowered by the window adjusting means 14 to reduce the amount of vaporization and the amount of combustion (
do. In this case, the ratio of air to fuel in the combustion chamber 11 changes, and the air ratio in the lower part of the combustion chamber 11 increases during weak combustion compared to during strong twist firing. Therefore, a flame is formed in the lower air holes of the inner and outer flame tubes 9.10, and the temperature near the wick 1 rises. For this reason, when there is a sudden change from weak combustion to strong twist firing, the temperature near the wick 1 does not immediately drop to the temperature during strong twist firing, resulting in an excessive amount of fuel vaporization, which is indicated by the diagonal lines in Figure 4. Excessive combustion as shown in area A occurs, and a large flame is generated above the combustion tube. In addition, CO and soot may be generated due to lack of air and insufficient mixing due to sudden changes, which may cause problems in terms of safety and comfort. I had an issue with this.

Means for Solving the Problems In order to solve this problem, the present invention provides an air supply means that works in conjunction with the window adjustment means and supplies air into the combustion cylinder using a fan or the like.

Effect In the above configuration, when the combustion is suddenly changed from weak combustion to strong twist firing, air is efficiently supplied into the combustion cylinder by the air supply means, which promotes combustion, increases the combustion load in the combustion chamber, and causes excessive twisting. The generation of flames and CO soot can be prevented.

EXAMPLE An example of the present invention will be described below with reference to the drawings. 1st
In the figure, reference numeral 1 denotes a cylindrical lamp wick set vertically and housed in a tank portion 2. 3 is a combustion cylinder placed above the tank portion 2. The lamp wick 1 is held between an inner wick tube 4 and an outer wick tube 5 so as to be vertically movable. Reference numeral 6 denotes a fuel holding section in which liquid fuel is kept at a constant level. The lower end of the wick 1 is immersed in liquid fuel, and the fuel is sucked up to the tip of the wick 1 by capillary action. The upper ends of the inner core tube 4 and the outer core tube 5 form an inner flame tray 7 and an outer flame tube 8, respectively, and an inner flame tube 9 and an outer flame tube 10 having a large number of air holes are mounted thereon. During combustion, the tip of the wick 1 is exposed in a combustion chamber 11 formed between an inner flame tube 9 and an outer flame tube 10, where the fuel is vaporized. 12 is an outer cylinder, and 13 is a transmission surface made of glass or the like. Reference numeral 14 denotes a window adjustment means that adjusts the amount of combustion by changing the exposed height of the tip of the lamp wick into the combustion chamber.

Reference numeral 15 denotes a blower fan serving as an air supply means, and is set inside the core inner cylinder 4. This blower fan 15 is set to generate a flow from below to above, and is interlocked with the window adjustment means 14.

In the above configuration, when the combustion amount is suddenly changed from weak combustion to strong twist firing, the blower fan 15 operates, air is supplied into the combustion tube 3 as shown by the black arrow, and the combustion inside the combustion chamber 11 is started. and increase the combustion load. As a result, combustion chamber 1
The amount of combustion within the fuel cell 1 increases, and it is possible to prevent excessive flame generation and generation of CO1 soot. FIG. 2 shows the effect of this embodiment. Since the combustion load is increased by operating the blower fan 15 at the same time as switching from weak combustion to strong twist firing, excessive combustion as shown in the shaded area A in FIG. 5 is not observed.

Effects of the Invention As is clear from the above description, according to the present invention, by providing an air supply means that works in conjunction with the window adjustment means and supplies air into the combustion cylinder, excessive flames can be suppressed during a sudden change from weak combustion to strong combustion. It is possible to suppress the generation of CO and soot, and to obtain a safe and comfortable combustion device without any sense of danger.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the main part of a liquid fuel combustion device according to an embodiment of the present invention, Fig. 2 is a characteristic diagram showing the effects of the device, and Fig. 3 is a sectional view of the main part of a conventional combustion device. FIG. 4 is a characteristic diagram of a conventional example. 1...Light wick, 2...Tank part, 3...
... Combustion cylinder, 14 ... Window adjustment means, 15.
...Air supply means. Name of agent: Patent attorney Toshio Nakao and one other person Figure 2-, 3-, 15 ・- Satoshi Kunishiro Gun-ku Salary stage Figure s7) Shoe

Claims (1)

[Claims] A cylindrical lamp wick set vertically, a tank part that accommodates and holds the lamp wick, a combustion tube placed above the tank part, a wick adjusting means for vertically moving the lamp wick, and a wick adjusting means A liquid fuel combustion apparatus having an air supply means that operates in conjunction with the combustion cylinder and supplies air into the combustion cylinder using a fan or the like.