JP6555469B2 - Combustion accelerator - Google Patents

Description

  The present invention relates to a combustion accelerator that is arranged around a combustion space where a flame is formed to promote combustion of the flame inside the combustion space.

  A flame is formed in the space by a chemical reaction between fuel and oxygen. And while a fuel and oxygen are supplied continuously, the combustion gas produced | generated by combustion is discharged | emitted continuously, A flame is hold | maintained in the predetermined position in space.

  For this reason, when the supply of fuel or oxygen and the discharge of combustion gas are disturbed by the influence of outside air, the flame is extinguished due to incomplete combustion resulting in temperature drop and smoke generation, and inability to continue combustion.

  Therefore, conventionally, a cylindrical cover is provided around the combustion space in which a flame is formed so that the flame can be continuously burned without being affected by outside air (see, for example, Patent Document 1). ).

JP-A-8-235930

  However, just by providing a cylindrical cover around the combustion space as in the conventional case, it is not affected by outside air, but combustion itself cannot be promoted.

  Therefore, the present inventor has made extensive studies and improved the structure of the cover provided around the combustion space so that the combustion itself can be promoted.

According to the first aspect of the present invention, in the combustion accelerator, the intake hole is formed in the surrounding wall that surrounds the outside of the combustion space in which the flame is formed in the state of being extended upward, and the inside and / or outside of the surrounding wall. A swirl flow forming plate for swirling air inside the combustion space, the surrounding wall having a conical shape that gradually narrows upward, and the intake hole is formed in a lower portion of the conical wall surface I made it.

Moreover, in this invention which concerns on Claim 2 , in the said invention which concerns on the said Claim 1 , the said surrounding wall decided to provide an outer swirl | flow flow formation board to the upper part rather than an upper end part.

Further, in the present invention according to claim 3 , in the present invention according to claim 1 or claim 2 , the surrounding wall carries the catalyst in a portion in contact with the combustion gas.

  And in this invention, there exists an effect described below.

  That is, in the present invention, in the combustion accelerator, the intake hole is formed in the surrounding wall that surrounds the outside of the combustion space in which the flame is formed, and air is swirled inside the combustion space inside or / and outside the surrounding wall. Since the swirl flow forming plate is provided, the air flow in the internal combustion space is not disturbed by the surrounding wall, and the air flowing from the outside through the intake holes is swirled inside the combustion space. Can be made. And the spiral unevenness | corrugation is formed in the surface of a flame by the flow (swirling flow) of the swirling air, and the surface area of a flame can be increased. Thereby, the combustion of the flame is promoted, the combustion temperature can be increased, and the generation of smoke due to incomplete combustion can be suppressed.

  In particular, when the surrounding wall has a conical shape, the air inside the combustion space can be discharged well upward and the formation of the flame can be stabilized.

  Further, in the case where the outer swirl flow forming plate is provided above the upper end of the surrounding wall, even if a flame is formed by projecting upward from the upper end of the surrounding wall, the air is directed toward the tip of the flame. Can be swirled and supplied, and combustion of the entire flame can be promoted.

  In addition, when the catalyst is supported on the part where the surrounding wall and the combustion gas are in contact with each other, the combustion gas can be pressed against the catalyst by the action of the swirling flow, and decomposition of harmful substances and unburned substances contained in the combustion gas can be achieved. Removal and the like can be performed satisfactorily.

The front view which shows a combustion accelerator. FIG. FIG. The bottom view. Plane explanatory drawing which shows the flow of air.

  The specific configuration of the combustion accelerator according to the present invention will be described below with reference to the drawings.

  As shown in FIGS. 1 to 5, the combustion accelerator 1 is used by being placed on top of a combustion device 3 that forms a flame 2. In addition, the combustion accelerator 1 should just be arrange | positioned so that the outer side of the flame 2 may be enclosed, and is not limited to the case where it mounts directly on the combustion apparatus 3, and is used. Moreover, the combustion apparatus 3 should just be able to form the flame 2, and can use the combustion instrument etc. which used fuels, such as a candle and gas and kerosene.

  The combustion accelerator 1 has a surrounding wall 5 that surrounds the outside of a combustion space 4 in which a flame 2 is formed (a space in which a combustion reaction is caused by fuel and oxygen). The surrounding wall 5 only needs to surround the outside of the combustion space 4, and is not limited to surrounding the entire outside of the combustion space 4, and surrounds a part of the outside of the combustion space 4 (for example, the upper and lower center portions of the flame). It may be a thing.

  The surrounding wall 5 has a conical shape in which the area of the horizontal cross section gradually narrows upward, and circular openings 6 and 7 are formed at the lower end and the upper end.

  The surrounding wall 5 is provided with a plurality (eight in this case) of circular intake holes 8 at equal intervals in the circumferential direction at the lower part of the conical wall surface. The intake hole 8 penetrates the outside and the inside of the surrounding wall 5 and introduces the air outside the surrounding wall 5 to the inside of the surrounding wall 5. Note that the air introduced inside the surrounding wall 5 is discharged from the opening 7 at the upper end of the surrounding wall 5.

  Inside the surrounding wall 5, a plurality of (here, eight) inner swirl flow forming plates 9 for swirling air in the combustion space 4 in a certain direction (here, counterclockwise) are provided. Provided. Each inner swirl flow forming plate 9 is inclined in a fixed direction side (herein, clockwise side) with respect to the radiation (straight line extending in the radial direction) from the center of the surrounding wall 5 in plan view. It is attached to the inner wall surface of the cone shape. In this way, the inner end and the outer end of all the inner swirl flow forming plates 9 are arranged on the same circle, and the outer end of each inner swirl flow forming plate 9 is circumferential with respect to the inner end. The air passing from the outside toward the inside between the adjacent inner swirl flow forming plates 9 is constant in the combustion space 4 in plan view by shifting in a certain direction (here, clockwise) toward the direction. It turns in the direction (here, counterclockwise).

  In addition, an annular plate-shaped soot 10 is formed outside the surrounding wall 5 and air is swirled in a certain direction (here, counterclockwise) inside the combustion space 4 above the soot 10. A plurality of (here, 8) outer swirl flow forming plates 11 are provided. Each outer swirl flow forming plate 11 is inclined in a fixed direction side (here, clockwise) with respect to the radiation from the center of the surrounding wall 5 (straight line extending in the radial direction) in plan view. It is attached outside the outer wall surface of the conical shape. In this way, the inner end and the outer end of all the outer swirl flow forming plates 11 are arranged on the same circle, and the outer end of each outer swirl flow forming plate 11 is circumferential with respect to the inner end. The air passing from the outside to the inside between the adjacent outer swirl flow forming plates 11 from the outside to the inside by shifting in a certain direction (here, clockwise) toward the direction in a certain direction (here, counterclockwise) It flows into the combustion space 4 while turning clockwise.

  Note that the swirl direction by the inner swirl flow forming plate 9 and the swirl direction by the outer swirl flow forming plate 11 are made to be the same direction (here, counterclockwise).

  The combustion accelerator 1 is configured as described above, and the air outside the combustion accelerator 1 is in a fixed direction (here, counterclockwise) in plan view by the action of the outer swirl flow forming plate 11. The air passes through the intake hole 8 and turns into the surrounding wall 5 while turning. The air that has passed through the intake hole 8 flows into the combustion space 4 while swirling in a fixed direction (here, counterclockwise) in plan view by the action of the inner swirl flow forming plate 9. Then, the flame 2 is formed by burning the fuel with the air flowing into the combustion space 4. The combustion gas is guided by the conical inner wall surface of the surrounding wall 5 and the inner swirl flow forming plate 9 and is discharged from the opening 7 at the upper end. Therefore, a catalyst such as palladium or rhodium is supported on the surface of the surrounding wall 5 through which the combustion gas passes (the surface in contact with the combustion gas: the inner wall surface of the surrounding wall 5, the surface of the inner swirl flow forming plate 9 or the surface of the opening 7). In this way, the combustion gas can be pressed against the catalyst by the action of the swirling flow, and the harmful substances and unburned substances contained in the combustion gas can be favorably decomposed and removed.

  In the combustion accelerator 1, both the inner swirl flow forming plate 9 and the outer swirl flow forming plate 11 are provided. However, the present invention is not limited to this, and only the inner swirl flow forming plate 9 may be provided. Only the outer swirl flow forming plate 11 may be provided. Moreover, in the said combustion accelerator 1, although the surrounding wall 5 is made into the cone shape, it is not restricted to this, It is good also as a cylindrical shape, a rectangular duct shape, etc. Further, in the combustion accelerator 1, the upper end portion of the outer swirl flow forming plate 11 is extended upward from the upper end portion (opening 7) of the surrounding wall 5. It only has to be formed.

  As described above, the combustion accelerator 1 forms the intake hole 8 in the surrounding wall 5 that surrounds the outside of the combustion space 4 in which the flame 2 is formed, and burns inside or / and outside the surrounding wall 5. A swirl flow forming plate (inner swirl flow forming plate 9 and outer swirl flow forming plate 11) for swirling air inside the space 4 is provided.

  Therefore, in the combustion accelerator 1 configured as described above, the air flow in the internal combustion space 4 is not disturbed by the surrounding wall 5, and the air flowing from the outside through the intake hole 8 is swirled inside the combustion space 4. Can be made. And the spiral unevenness | corrugation is formed in the surface of the flame 2 by the flow (swirl flow) of the swirling air, and the surface area of the flame 2 can be increased. Thereby, combustion of the flame 2 is promoted, the combustion temperature can be increased, and generation of smoke due to incomplete combustion can be suppressed.

  The combustion accelerator 1 has a configuration in which the surrounding wall 5 has a conical shape.

  Therefore, in the combustion accelerator 1 configured as described above, the air inside the combustion space 4 can be discharged well upward, and the formation of the flame 2 can be stabilized. Thereby, combustion of the flame 2 can be further promoted.

  In addition, the combustion accelerator 1 has a configuration in which the outer swirl flow forming plate 11 is provided above the upper end of the surrounding wall 5.

  Therefore, in the combustion accelerator 1 configured as described above, even when the flame 2 is formed so as to protrude upward from the upper end portion of the surrounding wall 5, the air can be swirled toward the front end portion of the flame 2 and supplied. Also by this, combustion of the flame 2 can be further promoted.

DESCRIPTION OF SYMBOLS 1 Combustion accelerator 2 Flame 3 Combustion device 4 Combustion space 5 Enclosure 6,7 Opening 8 Intake hole 9 Inner swirl flow formation board
10 鍔 11 Outer swirl flow forming plate

Claims (3)

Swirling for forming air intake holes in the surrounding wall that surrounds the outside of the combustion space in which the flame is formed in a state of being extended upward, and for causing air to swirl inside and / or outside the surrounding wall A combustion accelerator, characterized in that a flow forming plate is provided, the surrounding wall has a conical shape gradually narrowing upward, and the intake holes are formed in a lower portion of the conical wall surface .   The combustion accelerator according to claim 1, wherein the surrounding wall is provided with an outer swirl flow forming plate above the upper end portion. The combustion accelerator according to claim 1 or 2, wherein the surrounding wall carries a catalyst in a portion in contact with the combustion gas.

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