JPH02106602A - Combustion device - Google Patents

Abstract

PURPOSE:To enable regulating smaller combustion than the time when the height of the exposure of the wick is at a low position by forming slits in the side under an outer fire tray circumferentially, by providing an outer wick-cylinder which is joined to the outer fire tray-base with a gap outwardly from said slits and also with a gap downwardly from the outer wire tray, and by providing a flow-straightening means in the upper middle inside an inner fire tray-base. CONSTITUTION:There are provided a plurality of slits 21 in the side under an outer fire tray 5 circumferentially and also a cylindrical bottomed flow-straightening means 23 in the upper middle inside an inner fire tray-base 2. An outer work-cylinder 22 is joined to the outer fire tray-base 3 with a gap (a) outwardly from said slits 21 and with a gap (b) between the top edge of the outer wick-cylinder 22 and the underside of the outer fire tray 5. These gaps (a) and (b) are designed to make the air flowing into the lower part of a combustion chamber 8 appropriate in quantity for maintaining stabilized combustion and a also obtain a cooling effect from flow of cool air. By the use of the flow-straightening means 23 the cool air rising inside the inner fire tray-base 2 is made to flow along the inner wall surface of the inner fire tray-base 2 with a cooling effect on an inner fire tray 4 and the inner fire tray-base 2, which is in contact with the wick 1, so that the vaporization from the wick 1 decreases in amount and therefore the combustion amount lowers.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a combustion device used for home heating and the like.

2. Description of the Related Art A kerosene stove, which has been widely used as this type of combustion device, is generally of the type shown in FIG. In FIG. 5, reference numeral 1 denotes a lamp wick, which is set between an inner fire pan 2 and an outer fire pan 3 so as to be vertically movable. Inner fire pan part 2 and outer fire pan part 3
The upper end portions form an inner flame tray 4 and an outer flame tray 5, respectively, and an inner flame tube 6 and an outer flame tube 7 are placed thereon. During combustion, the tip of the wick 1 is exposed into a combustion chamber 8 formed between an inner flame tube 6 and an outer flame tube 7, where the fuel is vaporized.

Reference numeral 9 denotes an outer cylinder, and the inner flame cylinder 6, outer flame cylinder 7, and outer cylinder 9 are arranged approximately concentrically in order from the inside, and are integrated by a fixing pin 10. Reference numeral 11 indicates a large number of air holes provided in the inner flame tube 6 and the outer flame tube 7. Reference numeral 12 denotes an inner flame tube top plate that closes the upper end opening of the inner flame tube 6, and a ventilation hole 1 that communicates from the inside of the inner flame tube 6 to the top.
It has 3. 14 is a flame expansion plate placed on the top plate 12 of the inner flame tube. A constriction part 15 is formed at the upper end of the outer cylinder 9, and a red-hot part 16 is formed in the outer flame cylinder 7 above the constriction part 15, and a through hole 17 with a large opening is provided. 18 is a transmission tube made of a transparent material such as glass;
It is placed on the outer cylinder 9. Reference numeral 19 denotes a top frame which is placed on the upper end of the red-hot part 16 so as to cover the upper end of the air passage 20 between the red-hot part 16 and the transparent cylinder 18.
is fixed.

In the above configuration, when the lamp wick 1 is ignited, combustion starts. The fuel continues to vaporize due to the heat of combustion, and the air necessary for combustion flows through the air holes of the inner flame tube 6, the outer flame tube 7, and the through holes 1 of the red-hot part 16 due to the thermal draft generated in the combustion chamber 8.
7 into the combustion chamber 8 to cause combustion m1Ad red-hot part 16
It was heated to red-hot temperature and used as radiant heat for heating purposes.

Problems to be Solved by the Invention However, in the above configuration, the amount of combustion is adjusted by adjusting the height of the wick worker exposed inside the combustion chamber 8, and if the exposed height is high, the amount of combustion decreases. If it is large and the exposed height is low, the combustion amount will be small. When reducing the combustion amount by lowering the exposure height and reducing the amount of vaporization, the amount of vaporization decreases relative to the amount of air supplied, so the combustion chamber 8 The amount of combustion in the lower part increases and heats the lamp wick 1, inner fire pan 4, and outer fire pan 5. Therefore, the amount of heat given to the lamp wick 1 increases, and even though the exposed height of the lamp wick 1 is lowered to reduce the evaporation area, the amount of vaporization does not decrease much. Furthermore, in order to reduce the amount of evaporation, it is necessary to lower the exposed height of the wick, which increases the temperature of the inner and outer fire pans 4 and 5, causing tar to form in the rotating parts and causing the wick 1 to fall. It takes time to digest. In addition, when adjusting the exposure height of the lamp wick I from a state of small combustion amount to a large combustion amount, the amount of vaporization temporarily increases and an excessive flame is generated above the combustion chamber 8, causing flames to spread outside the exterior of the appliance. may protrude, and at the same time there is a lack of air,
Lift flames due to insufficient mixing generate CO, soot, and odor. The above-mentioned phenomenon worsens as the exposed height of the lamp wick l becomes lower, and there have been problems in terms of safety and comfort, such as burns and fires during use.

The present invention solves such conventional problems, and suppresses the rise in the temperature of the fire pan when the exposed height of the wick is lowered to achieve a small combustion volume, making it possible to adjust the combustion volume to a smaller combustion volume and ensuring stable combustion. . In addition, it suppresses the tar produced by the fire pan, the delay in digestion time, and the excessive flame that occurs when adjusting from a small combustion amount to a large combustion amount, and prevents the generation of CO, soot, and odor, making the combustion device safe and comfortable. The purpose is to provide

Means for Solving the Problems In order to solve the above problems, the combustion device of the present invention provides a plurality of oblong openings on the circumferential side of the lower part of the outer fire pan, and has a plurality of oblong openings arranged at intervals on the outside of the oblong openings. a wick outer cylinder connected to the outer fire pan through the space and also below the outer fire pan through a space;
A plate-shaped or bottomed cylindrical rectifier is provided at the center of the inner upper part of the inner fire pan.

According to the above-described structure, the present invention reduces the heat transfer area by insulating the downward heat transfer of the outer grate by the oblong opening, thereby reducing the amount of heat from the outer grate, which is one of the heat sources for heating the lamp wick. At the same time, the amount of vaporization from the wick is reduced because the outer platter is cooled by the air flowing in from the oblong opening. Furthermore, the amount of air flowing in from the oblong opening can be optimized by the air passage formed in the space between the outer fire pan and the core outer cylinder, so that stable combustion can be ensured. In the inner fire pan, the low-temperature air flowing upward inside the inner fire pan is caused to flow along the inner wall surface of the inner fire pan by the rectifier, and the inner fire pan where the inner fire pan and the lamp wick are in contact is cooled. Since the amount of heat from the inner fire pan, which is one of the heat sources for heating the wick, can be reduced, the amount of vaporization of the wick is reduced. Therefore, it is possible to reduce the amount of heat from both the outer grate, the inner grate, and the direction grate, which are the heat sources for heating the wick, so when the exposed height of the wick is lowered, the amount of combustion can be adjusted to a smaller amount. It is possible to ensure stable combustion, suppress tar generated in the fire pan, delay in extinguishing time, and excessive flame that occurs when adjusting from a small combustion amount to a large combustion amount, and prevent the generation of CO and soot odors.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings. The same parts as those in FIG. 5 already explained are given the same reference numerals, and the explanation will be omitted, and only the different parts will be explained.

In FIG. 1, a plurality of oblong openings 21 are provided on the circumferential side of the lower part of the outer fire pan 5. Further, a bottomed cylindrical rectifier 23 is provided in the upper center of the interior of the inner fire pan 2. As shown in FIG. 2, a core outer cylinder 22 is connected to the outer fire pan 3 at a distance a from the outside of the oblong opening 21, and the tip of the core outer cylinder 22 is connected to the outer fire pan 5. It is provided below with a gap in between. Fig. 4 a, b, c, d, e shows the rectifier 23
An example of the shape is shown below.

In the above configuration, combustion is carried out in the same manner as that shown in FIG. Even if the amount of combustion at the lower part of the grill increases, the horizontally elongated opening 21 provided at the lower part of the outer grill 5 insulates the heat transfer from the outer grill 5 to the outer grill part 3 and reduces the heat transfer area. In addition, the temperature rise in the outer fire pan 3 is reduced, and the amount of heat from the outer fire pan 3, which is one of the heat sources for heating the lamp wick 1, can be reduced, so the amount of vaporization from the lamp wick 1 is reduced, and the amount of combustion is reduced. Here, the above-mentioned effect is that the longer the horizontal length of the horizontally long opening 21, the thicker it is because the heat transfer is insulated and the heat transfer area is reduced. The amount of air from the section 21 becomes excessive, causing an air-fuel ratio deviation in the lower part of the combustion chamber 8, and the stomatal combustion of the air hole 11 continues to blink, resulting in an extremely unstable combustion state.However, according to the present invention, For example, a space a is provided on the outside of the oblong opening 21, and a space is provided below the outer fire pan 5, so that the air flow is shown by the arrow m in FIG. Even if the length in the direction is made longer, the amount of air flowing into the lower part of the combustion chamber 8 can be optimized,
A cooling effect can also be obtained from the incoming air. Next, the inner fire pan portion 2 will be described. Due to the rectifier 23 provided inside the inner grate 2, the flow of low-temperature air rising inside the inner grate 2 flows along the inner wall surface of the inner grate 2 as shown by arrow n in FIG. As a result, the inner fire pan 4 and the inner fire pan section 2 that the lamp wick 1 contacts are cooled, so the amount of heat from the inner fire pan 4 and the inner fire pan section 2, which are one of the heat sources for heating the lamp wick 1, can be reduced. Therefore, the amount of vaporization from the lamp wick 1 decreases, and the amount of combustion decreases. This effect is such that the lower the exposed height of the lamp wick 1, the higher the temperature of the inner grate 4 and the inner grate portion 2 becomes, so the temperature difference between the temperature and the low-temperature air rising in the inner grate portion 2 increases and the cooling effect increases. FIG. 4 shows an example of the shape of the rectifier 23 of the present invention, and the same effects as described above can be obtained in both cases.

Therefore, the amount of heat from both the outer fire pan 3, the inner fire pan 4, and the inner fire pan 2, which are the heat sources for heating the lamp wick 1, can be reduced, so the exposed height of the lamp wick 1 is higher than necessary in order to reduce the amount of combustion. It is possible to adjust the combustion amount to a smaller amount without lowering the temperature, ensure stable combustion, generate less tar on the wick 1 and fire pan, and extinguish the fire in a short time even when the wick 1 is lowered to extinguish the fire. . In addition, even when adjusting the exposure height of the wick 1 from a small combustion amount to a large combustion amount, it is possible to reduce the amount of vaporization from becoming excessive, suppressing excessive flames and preventing lift flames caused by insufficient air or insufficient mixing. It can prevent the generation of CO, soot, and odors.

Effects of the Invention As described above, according to the combustion apparatus of the present invention, a plurality of oblong openings are provided on the circumferential side of the lower part of the outer fire pan, and a plurality of oblong openings are provided outwardly of the oblong openings at intervals, and an external A wick outer cylinder connected to the outer fire pan and a rectifier at the center of the inner upper part of the inner fire pan are provided below the fire pan with a space between them, and the outer fire pan and the inner fire pan are the heat source for heating the wick. By reducing the amount of heat from both the fire pan and the inner fire pan, (if the exposed height of the 11 wicks is lowered, the combustion amount can be adjusted to a smaller amount. (2) A stable combustion state can always be ensured. (3) It can be used for a long period of time because it generates little tar on the wick and fire pan.

(4) When extinguishing a fire by lowering the wick, the extinguishing time is short and safe. (5) Excessive flame can be suppressed when adjusting from a small combustion amount to a large combustion amount, and generation of CO, soot, and odor can be prevented. The following effects can be obtained, and a safe and comfortable combustion device can be provided.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a combustion device in an embodiment of the present invention;
2 and 3 are sectional views of essential parts of the combustion apparatus, FIG. 4 is a sectional view of essential parts of a rectifier of the combustion apparatus, and FIG. 5 is a sectional view of a conventional combustion apparatus. 1...Light wick, 2...Inner fire pan, 3...
...Outer fire pan, 4...Inner fire pan, 5...
...Outer fire pan, 6...Inner flame tube, 7...Outer flame tube, 8...Combustion chamber, 9...Outer tube, 1
DESCRIPTION OF SYMBOLS 1... Air hole, 21... Horizontally long opening, 22... Core outer cylinder, 23... Rectifier, a, b... ···interval. Name of agent: Patent attorney Shigetaka Awano

Claims (1)

[Claims] an outer flame tube having a large number of air holes, an inner flame tube having a large number of air holes arranged inside the outer flame tube, an outer flame tube located outside the outer flame tube, and the outer flame tube. A lamp wick is set to be movable up and down in the lower part of the combustion chamber formed between the tube and the inner flame tube, and an outer flame pan and an inner flame tray on which the outer flame tube and the inner flame tube are placed, respectively, are placed at the upper end. A plurality of oblong openings are provided on the circumferential side of the lower part of the outer grate, and a plurality of oblong openings are provided outwardly of the oblong openings at intervals, and the outer grate A combustion device comprising: a core outer cylinder connected to the outer fire pan with a space therebetween, and a plate-shaped or bottomed cylindrical rectifier at the center of the inner upper part of the inner fire pan.