JP6600913B2 - Combustion accelerator - Google Patents

Description

  The present invention relates to a combustion accelerator for promoting combustion in a combustion space where a flame is formed.

  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.

Wall in the present invention according to claim 1, in the combustion promotion device, which on the upper side of the bottom plate for mounting the fuel to form a combustion space in which the flame is formed, flowing the air into the combustion space inside and outside of the combustion space And forming a cylindrical combustion space extending up and down surrounded by the inner air inflow portion and the outer air inflow portion by forming the inner air inflow portion and the outer air inflow portion, and the inner air inflow portion and Air flowing from the inner air inflow portion and the outer air inflow portion by decreasing the cross-sectional area of the combustion space into which air flows from the inner air inflow portion and the outer air inflow portion along the vertical direction in the middle of the outer air inflow portion The convex portions that increase the amount of inflow of water are alternately formed at different positions in the vertical direction .

Further, in the present invention according to claim 2, wherein in the present invention according to claim 1, and to Rukoto provided door to inject fuel between the convex portion formed vertically in different positions.

Further, in the present invention according to claim 3 , in the present invention according to claim 1, the inner air inflow portion swirls the air flowing into the combustion space in one direction within the combustion space, and the outer air inflow The part swirls the air flowing into the combustion space in the same direction as the inner air inflow portion inside the combustion space.

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

  That is, in the present invention, in the combustion accelerator, a wall-shaped inner air inflow portion and an outer air inflow portion that allow air to flow into the combustion space are formed on the inside and outside of the combustion space in which the flame is formed, thereby forming the upper and lower sides. A cylindrical combustion space that extends is formed, and a convex portion that reduces the cross-sectional area of the combustion space along the vertical direction is formed in at least one of the inner air inflow portion and the outer air inflow portion. The cross-sectional area of the space is partially reduced (squeezed).

  Thereby, in the part where the cross-sectional area of the combustion space decreases, the pressure decreases as the flow velocity increases, and the inflow amount (supply amount) of air (oxygen) flowing into the combustion space from the inner or / and outer air inflow portion. Will increase. Therefore, combustion in the combustion space can be further promoted.

  Further, in the portion where the cross-sectional area of the combustion space decreases, the vertical length of the combustion space increases, and the flame length also increases accordingly. Therefore, combustion in the combustion space can be further promoted.

  And by promoting combustion in a combustion space, while being able to increase combustion temperature, generation | occurrence | production of the smoke by incomplete combustion can be suppressed.

  In particular, when the air flowing into the combustion space is swirled at the inner and / or outer air inflow portion, spiral irregularities are formed on the flame surface by the action of the swirling air flow, and the surface area of the flame is increased. Can be made. Also by this, combustion of the flame is promoted, the combustion temperature can be increased, and generation of smoke due to incomplete combustion can be suppressed.

The front view which shows a combustion accelerator. FIG. The bottom view. FIG. The same plane sectional view (inner air inflow part). The same plane sectional view (outside air inflow part). The same plane sectional view (combustion gas discharge part).

  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 7, the combustion accelerator 1 is disposed outside the combustion space 2, the combustion space 2 in which a flame is formed, the inner air inflow portion 3 disposed inside the combustion space 2, and the combustion space 2. An outer air inflow portion 4 and a combustion gas discharge portion 5 disposed on the upper side of the combustion space 2.

  The combustion space 2 includes an inner air inflow portion 3 extending in the vertical direction disposed at the center of the annular plate-shaped bottom plate 6 and an outer air inflow portion 4 extending in the vertical direction disposed at the outer peripheral portion of the bottom plate 6. It is a cylindrical space extending upward and downward with an upper opening. In the combustion space 2, external air (outside air) flows from the inner air inflow portion 3 and the outer air inflow portion 4 by placing fuel (for example, solid fuel or combustible material) on the bottom plate 6 and igniting it. Thus, a flame is formed on the upper portion of the bottom plate 6.

  The inner air inflow portion 3 forms a swirl suction portion 7 for swirling outside air in one direction at the lower outer periphery of the bottom plate 6.

  The swirl suction part 7 is spaced apart in the circumferential direction with a plurality of (in this case, 12) rectifying plates 8 inclined in a certain direction toward the circumferential direction at the lower outer periphery of the bottom plate 6. Arranged. Here, the inner end portion and the outer end portion of each rectifying plate 8 are arranged on the same circle, and the outer end portion of each rectifying plate 8 is oriented in a circumferential direction with respect to the inner end portion (here, By shifting in the clockwise direction in a plan view, the outside air that has passed between the adjacent rectifying plates 8 from the outside to the inside is fixed in the space below the bottom plate 6 (here, in a plan view). It is designed to turn counterclockwise.

  Further, the inner air inflow portion 3 is attached to the insertion hole 9 in the center portion of the bottom plate 6 in a state where the circumferential wall-shaped column 10 is extended vertically.

  The column 10 has a disc-like lid 12 attached to the upper end of a hollow cylindrical main body 11 and a disc-like bottom 13 attached to the lower end of the main body 11. In the main body 11, a plurality of through holes 14 are formed radially from the center on the peripheral surface. A plurality of through holes 15 are also formed in the bottom plate 13. The main body 11 has a lower end protruding below the bottom plate 6. Thereby, the cylinder 10 allows the outside air sucked from the swirl suction portion 7 to flow into the internal space from the through hole 14 of the main body 11 protruding below the bottom plate 6 and the through hole 15 of the bottom body 13, and from the bottom plate 6. Also flows into the combustion space 2 from the through hole 14 of the main body 11 protruding upward.

  The inner air inflow portion 3 allows outside air to flow in from the inside of the combustion space 2 through the swirl suction portion 7 and the cylinder 10. At that time, the outside air is sucked inward in a certain direction (here, counterclockwise in a plan view) by the action of the rectifying plate 8 of the swirl suction unit 7. Therefore, inside the cylinder 10, the outside air turns in a certain direction (here, counterclockwise in a plan view), and the outside air enters the combustion space 2 from the through hole 14 of the cylinder 10 as it is (while turning). Inflow. Thereby, the inner air inflow portion 3 can turn the air flowing into the combustion space 2 from the inside in one direction (here, the counterclockwise direction in a plan view) inside the combustion space 2.

  In the inner air inflow portion 3, convex portions 16 are formed on the outer periphery of the middle portion of the main body 11 of the column 10 so as to protrude outwardly from the outer periphery, with a vertical interval. The convex portion 16 protrudes (bulges) outward from the outer peripheral surface of the cylinder 10 (main body 11), so that the convex portion 16 is located above and below the position where the convex portion 16 is formed. The horizontal cross-sectional area of the combustion space 2 at the position where is formed becomes narrow, and the cross-sectional area of the combustion space 2 is partially reduced in the vertical direction.

  As a result, in the inner air inflow portion 3, the horizontal cross-sectional area of the internal space where the outside air rises partially increases at the convex portion 16, and the flow rate of the outside air decreases at that portion, and the internal pressure increases accordingly. In addition, the inflow amount (supply amount) of air (oxygen) flowing into the combustion space 2 from the inner air inflow portion 3 can be increased. Similarly, since the cross-sectional area of the combustion space 2 is partially reduced (squeezed) at the convex portion 16, the pressure of the inner air inflow portion 3 decreases as the flow velocity inside the combustion space 2 increases. In addition, the inflow amount (supply amount) of air (oxygen) flowing into the combustion space 2 from the inner air inflow portion 3 can be increased.

  The outer air inflow portion 4 is attached to the upper part of the outer periphery of the bottom plate 6 in a state where a circular wall-shaped column 17 is vertically extended.

  This circular column 17 is a swirl inflow portion 18 for swirling air (outside air) flowing into the combustion space 2 from the outside in a certain direction (here, counterclockwise in plan view) inside the combustion space 2. Are arranged in a vertical direction to form a plurality of stages (here, seven stages), and the rotary inflow portions 18 of each stage are partitioned by an annular plate-like partition wall 19.

  Each swirl inflow portion 18 is a state in which a plurality of (in this case, 12) rectifying plates 20 are inclined in a certain direction toward the circumferential direction between the inner peripheral edge and the outer peripheral edge of the partition wall 19. Are arranged at intervals in the circumferential direction. Here, the inner end portion and the outer end portion of each rectifying plate 20 are arranged on the same circle, and the outer end portion of each rectifying plate 20 is directed in a circumferential direction with respect to the inner end portion (here, By shifting in the clockwise direction, the outside air that has passed from the outside to the inside between the adjacent rectifying plates 20 turns counterclockwise within the combustion space 2.

  The outside air inflow portion 4 allows outside air to flow from the outside of the combustion space 2 through the swirl inflow portion 18. At that time, the outside air is supplied into the combustion space 2 in a certain direction (here, counterclockwise in plan view) by the action of the current plate 20. Therefore, inside the combustion space 2, the outside air turns in a certain direction (here, counterclockwise in plan view). Thereby, the outer air inflow portion 4 can turn the air flowing into the combustion space 2 from the outside in one direction (here, the counterclockwise direction in a plan view) inside the combustion space 2. In addition, since the partition wall 19 is formed between the swirling inflow portions 18 of each stage, a plurality of swirling flows are generated in the vertical direction inside the combustion space 2, and moreover, between the swirling inflow portions 18 of each stage. By the action of the partition wall 19 formed in the above, the vertical dispersion of the swirling flow generated in the swirling inflow portions 18 of each stage is suppressed, and the momentum of the swirling flow toward the flame can be kept high.

  In the outer air inflow portion 4, a convex portion 21 is formed on the inner periphery of the partition wall 19 in the middle so as to protrude toward the inner periphery. The convex portion 21 protrudes (inflates) further toward the inner periphery than the inner periphery of the other partition wall 19, so that it is higher than the positions where the protrusions 21 are formed. The horizontal sectional area of the combustion space 2 at the position where the portion 21 is formed is narrowed, and the sectional area of the combustion space 2 is partially reduced along the vertical direction. A plurality of convex portions 21 may be formed at intervals in the vertical direction.

  As a result, in the outer air inflow portion 4, since the cross-sectional area of the combustion space 2 is partially reduced (squeezed) at the convex portion 21, the pressure decreases as the flow velocity inside the combustion space 2 increases. In addition, the inflow amount (supply amount) of air (oxygen) flowing into the combustion space 2 from the outer air inflow portion 4 can be increased.

  The combustion gas discharge part 5 has an annular top plate 22 attached to the upper part of the outer air inflow part 4 (the rectifying plate 20 of the uppermost swirl inflow part 18). Sheet) of rectifying plates 23 are inclined in a certain direction toward the circumferential direction and are arranged at intervals in the circumferential direction. Here, the inner end portion and the outer end portion of each rectifying plate 23 are arranged on the same circle, and the outer end portion of each rectifying plate 23 is oriented in a circumferential direction with respect to the inner end portion (here, By shifting in the counterclockwise direction), the combustion gas that has passed from the inside to the outside between the adjacent rectifying plates 23 turns counterclockwise from the combustion space 2 toward the outside. As a result, the combustion gas swirling in the constant direction (here, counterclockwise) toward the circumferential direction inside the combustion space 2 is directly directed toward the circumferential direction in the constant direction (here, counterclockwise). It can be smoothly discharged to the outside while turning.

  The combustion gas discharge unit 5 can not only discharge the combustion gas but also heat an object to be heated (for example, a kettle or a grill) placed on the rectifying plate 23 with the heat of the combustion gas. In that case, the combustion accelerator 1 can be used as a heating device (cooking device). Moreover, a heat exchanger can also be provided in the combustion gas discharge part 5, In that case, the combustion promoter 1 can also be utilized as a heat source of heating apparatuses, such as a boiler and heating equipment.

  The combustion accelerator 1 has the above-described configuration. By flowing outside air from the inner air inflow portion 3 and the outer air inflow portion 4 while swirling into the combustion space 2, fuel is injected inside the combustion space 8. The combustion gas generated by the combustion of the fuel is combusted and discharged from the combustion gas discharge unit 5 to the outside while being swirled. Thus, by generating a swirl flow in the combustion air 2, spiral irregularities are formed on the surface of the flame by the swirl flow, and the surface area of the 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.

  As described above, the combustion accelerator 1 includes the wall-like inner air inflow portion 3 and the outer air inflow portion 4 that allow air to flow into the combustion space inside and outside the combustion space 2 in which a flame is formed. By forming the cylindrical combustion space 2 extending vertically, a convexity that reduces the cross-sectional area of the combustion space 2 along the vertical direction in at least one of the inner air inflow portion 3 and the outer air inflow portion 4. The parts 16 and 21 are formed.

  Therefore, in the combustion accelerator 1 configured as described above, the cross-sectional area of the combustion space 2 is partially reduced (squeezed) at the position where the convex portions 16 and 21 are formed.

  Thereby, in the part where the cross-sectional area of the combustion space 2 decreases, the pressure decreases as the flow velocity increases, and the inflow of air (oxygen) flowing into the combustion space 2 from the inner or / and outer air inflow portions 3 and 4 The amount (supply amount) increases. Therefore, combustion in the combustion space 2 can be further promoted.

  Further, in the portion where the cross-sectional area of the combustion space 2 decreases, the vertical length of the combustion space 2 increases, and the length of the flame increases accordingly. Therefore, combustion in the combustion space 2 can be further promoted.

  And by promoting combustion in the combustion space 2, while being able to increase combustion temperature, generation | occurrence | production of the smoke by incomplete combustion can be suppressed.

  The combustion accelerator 1 is configured to swirl the air flowing into the combustion space 2 at the inner and / or outer air inflow portions 3 and 4.

  Therefore, in the combustion accelerator 1 configured as described above, spiral irregularities are formed on the surface of the flame by the action of the swirling air flow, and the surface area of the flame can be increased. Also by this, combustion of the flame is promoted, the combustion temperature can be increased, and generation of smoke due to incomplete combustion can be suppressed.

  The combustion accelerator 1 according to the present invention is not limited to the above configuration. For example, the inner air inflow portion 3 can be formed at a low cost by being formed of the porous column 10, but may be configured similarly to the circular column 17 of the outer air inflow portion 4. Moreover, although the convex part 16 is integrally formed with the column 10 (main body 11), it can also be set as the structure which attached the thing of another member to the outer peripheral wall of the column 10. FIG. Further, a plurality of convex portions 16 may be provided with a space in the vertical direction, or only one may be provided.

  In addition, the outer air inflow portion 4 is a wing-shaped annular column 17, but may be configured similarly to the column 10 of the inner air inflow portion 3. Further, although the convex portion 21 is formed integrally with the annular column 17 (partition wall 19), a configuration in which another member is attached to the inner peripheral wall of the annular column 17 may be adopted. Further, only one convex portion 21 may be provided, or a plurality of convex portions 21 may be provided at intervals in the vertical direction. Further, it is desirable that the convex portions 16 of the inner air inflow portion 3 and the convex portions 21 of the outer air inflow portion 4 are alternately attached at different heights.

  Furthermore, the combustion accelerator 1 may be provided with a door at the outer air inflow portion 4 so that the combustion accelerator 1 can be opened and closed so that fuel can be easily introduced into the combustion space 2. In that case, by forming the door between the convex portions 16 and 21 provided at intervals in the vertical direction, combustion gas or flame does not come out from the inside of the combustion space 2 to the outside of the door. Thus, safety can be improved.

DESCRIPTION OF SYMBOLS 1 Combustion accelerator 2 Combustion space 3 Inner air inflow part 4 Outer air inflow part 5 Combustion gas discharge part 6 Bottom plate 7 Swirling suction part 8 Current plate 9 Insertion hole 10 Cylinder
11 Body 12 Cover
13 Bottom 14 Through hole
15 Through hole 16 Convex
17 Circular column 18 Rotating inflow section
19 Partition wall 20 Current plate
21 Convex 22 Top plate
23 Rectifier plate

Claims (3)

A combustion space in which a flame is formed is formed on the upper side of the bottom plate on which the fuel is placed, and a wall-shaped inner air inflow portion and an outer air inflow portion for allowing air to flow into the combustion space are formed inside and outside the combustion space. In this way, a cylindrical combustion space extending up and down surrounded by the inner air inflow portion and the outer air inflow portion is formed, and the inner air inflow portion and the outer side are formed in the middle of the inner air inflow portion and the outer air inflow portion. By reducing the cross-sectional area of the combustion space into which air flows from the air inflow portion in the vertical direction, the convex portions that increase the inflow amount of air flowing in from the inner air inflow portion and the outer air inflow portion are vertically moved to different positions. A combustion accelerator characterized by being formed alternately . The combustion accelerator according to claim 1, wherein a door for introducing fuel is provided between the convex portions formed at different positions in the vertical direction . The inner air inflow portion swirls the air flowing into the combustion space in one direction inside the combustion space,
2. The combustion accelerator according to claim 1, wherein the outer air inflow portion turns air flowing into the combustion space in the same direction as the inner air inflow portion inside the combustion space.

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