JP2008298395A - Groove type combustion pot - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein, in conventional stoves burning woody fuel, since a combustion pot and a perforated plate are provided separately, many processes and long time are required for manufacturing, which increases manufacturing cost. <P>SOLUTION: The groove type combustion pot 5 is attached to a combustion apparatus having a combustion chamber 1 with a lower part as an ash receiving chamber 6 in the inner side and including a pellet input hole 9 for inputting plant-derived small solid fuel 8 to be burned in the groove type combustion pot 5 attached to the combustion chamber 1 toward the groove type combustion pot 5. The groove type combustion pot 5 is provided with falling prevention walls 10 erected in the direction intersecting with the input direction of the small solid fuel 8 to prevent the small solid fuel 8 input from the pellet input hole 9 from falling down from the forward/backward direction of the input direction to the ash receiving chamber 6 on the lower side of the combustion chamber 1, and with a perforated plate formed between lower ends of the falling prevention walls 10. The falling prevention walls 10 and the perforated plate are integrally formed of the same member to have a groove shape. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a combustion appliance that burns plant-derived solid fuel containing firewood, coal, briquettes, and the like, and more particularly, to an improvement in a combustion pot used in the combustion appliance.

  As a stove for burning wood pellets, there were various stoves including Patent Document 1 (Japanese Patent Laid-Open No. 2005-061713). These stoves have a small combustion pot attached to the bottom of the combustion chamber, and a large groove is formed between the peripheral wall of the combustion chamber and the outer periphery of the combustion pot. Therefore, since these grooves are present, the pellets thrown into the combustion pot bounce off due to an impact at the time of charging and fall into the groove outside the combustion pot. And when soot was thrown in, like the case where pellets were thrown in, it dropped into the groove on the outside of the combustion pot, or the burning soot dropped into the groove.

  Pellets and soot that fall into the groove on the outside of the combustion pot do not burn, and when the burning soot falls into this groove, incomplete combustion occurs. Therefore, it is not easy to clean the combustion chamber of the stove after fire extinguishing with a pellet stove having a groove outside the conventional combustion pot.

In order to solve such a problem, the applicant has proposed Japanese Patent Application No. 2006-290144. The combustion pot of the stove has a peripheral wall in which the outer periphery of the upper end of the combustion pot attached to the bottom of the combustion chamber is inscribed in the wall of the combustion chamber, and a part of the peripheral wall of the combustion pot or the entire periphery is inclined. It had a hopper type.
Japanese Patent Laid-Open No. 2005-061713

  However, the above-mentioned hopper type combustion pot is made of a thick steel plate having a thickness of about 3 mm, and it is necessary to weld a plurality of members in order to form a peripheral wall with a part of the peripheral wall or the entire periphery inclined. Also, a separately formed eye plate is attached to the intake port necessary for burning the fuel. Therefore, since the manufacturing process of the hopper type combustion pot is multi-step, it takes time to manufacture and the manufacturing cost is high.

  The present invention was conceived from such facts, and the low cost combustion pot that can be manufactured in a short time with a simple manufacturing process, and not only wood pellets to which the combustion pot is attached but also charcoal, firewood, branches and leaves, etc. An object of the present invention is to provide a combustion apparatus capable of burning various solid fuels having no shape.

  In order to achieve the above object, the groove type combustion pot of the present invention has a combustion chamber having a ash receiving chamber at the lower portion and burns in a combustion pot attached to the combustion chamber. A combustion pot attached to a combustion apparatus having a pellet charging hole for charging the ash toward the combustion pot, wherein the small solid fuel charged from the pellet charging hole is received from the front and rear of the charging direction by an ash receiver under the combustion chamber. A fall prevention wall that is erected so as to face the small solid fuel charging direction and a crossing direction so as not to fall into the chamber, and a eye plate formed between the lower ends of the fall prevention wall, the fall prevention wall And the eye plate are formed integrally from the same member and in a groove shape.

  Further, the eye plate may be formed as an inclined surface that gradually decreases from one end to the other end or from the center to both ends of the bottom of the groove-type combustion pot. It can be set as the structure which provided the movement suppression member.

  The small solid fuel movement restraining member referred to in the present application means that the small solid fuel charged on the eye plate formed as the inclined surface is inclined by the impact received by the charging of the small solid fuel to be charged later. It is a member that moves from a high position of the eye plate to a low position and suppresses dropping from the groove-type combustion pot to the lower ash receiving chamber in an incomplete combustion state. The small solid fuel movement restraining member is mounted on the eye plate at a straight line or at an arbitrary interval. Further, when the small solid fuel movement suppressing member is a round bar or a strip-like bar, it is attached in a direction orthogonal to or intersecting with the direction from the high position on the eye plate to the low position. Further, the shape of the small solid fuel movement restraining member is not limited to the round bar or the strip-like bar, but may be a small protrusion. The fall prevention member may have any shape as long as the longitudinal section of the groove-type combustion pot can be formed in an inverted trapezoidal shape, V shape, or U shape.

  Since the groove-shaped combustion pot of claim 1 is formed integrally with the anti-fall wall and the countersink, the combustion pot can be easily manufactured and the cost can be reduced. In addition, the drop prevention member is a groove type that is erected opposite to the groove type, and has a shape that is elongated in both end directions, so that the small solid fuel introduced from the pellet introduction hole is opposed to the groove type combustion pot. It does not easily fall from the groove type combustion pot to the lower ash receiving chamber by jumping over the standing fall prevention member, nor from the both ends of the groove type combustion pot to the lower ash receiving chamber. .

  In addition to the above effects, the groove-type combustion pot according to claim 2 is formed as an inclined surface in which the bottom plate of the groove-type combustion pot gradually decreases from one end to the other end or from the center to both ends. Therefore, the pellets and ash, which have become lighter as the combustion progresses, are blown away by the pellets that are thrown in one after another and move to the lower side of the tilted eye plate, and the combustion surface widens.

  The groove type combustion pot of claim 3 has a longitudinal section limited to the inverted trapezoidal type (or V type or U type), and the same effect as the groove type combustion pot of claim 1 or 2 can be obtained.

  Since the combustion appliance of claim 4 has a small solid fuel movement restraining member attached to the eyeplate at an arbitrary position, the small solid fuel may be used as long as the combustion of the small solid fuel is appropriately advanced and not reduced in weight. It rarely moves by jumping over or passing through the movement restraining member, and continues to burn on the grooved combustion pot until complete combustion proceeds.

  In addition, the fuel used for the groove type combustion pot and the combustion appliance of the present invention is a plant-derived solid fuel, and not only wood pellets but also conventional container type combustion pots did not burn. This includes grass and leaves as well as firewood, charcoal and briquettes. In addition, coal, which was a plant in ancient times, includes these processed products. The size of the solid fuel is not limited to the size and shape as long as it can be inserted into the combustion pot inside from the opening of the combustion chamber.

  This will be described with reference to the conceptual diagram of FIG. 1 and the perspective view of FIG. First, as shown in FIG. 1, the combustion appliance of the present invention has an opening 1a on one side, that is, the front (or side), and an opening / closing door 1b as a sealing member is attached to the opening 1a. It has a closed combustion chamber 1. The combustion chamber 1 is substantially closed, but need not be completely sealed. For example, there is a gap formed between the opening 1a or the opening 1a and the door 1b. Further, there is a combustion gas exhaust hole 4 communicating with a space 3 partitioned by a partition wall 2 provided in the combustion chamber 1. That is, a part of the combustion chamber 1 is a space 3 partitioned by a partition wall 2, which communicates with the exhaust hole 4 and burns plant-derived solid fuel in the grooved combustion pot 5. The combustion gas generated when the gas is generated is exhausted from the combustion chamber 1 to the outside.

  An exhaust fan 4 a as an exhaust device for forcibly exhausting the combustion gas is attached to the exhaust hole 4. The present embodiment is an explanation of a combustion appliance provided with an exhaust fan 4a as an exhaust appliance for forcibly exhausting combustion gas, but is not concerned with the presence or absence of an intake / exhaust appliance for forced exhaust or forced intake.

  Further, an ash receiving chamber 6 is provided below the groove-type combustion pot 5 attached in the combustion chamber 1, and the ash receiving chamber 6 has an opening 6a communicating with the outside. In the ash receiving chamber 6, an ash receiving tray 6 b is removably inserted from the opening 6 a and receives the ash that is burned and dropped by the solid fuel in the grooved combustion pot 5. Although not shown, a partition wall may be provided below the combustion chamber 1 to form an ash receiving chamber, and the ash receiving tray 6b may be removably inserted into the ash receiving chamber 6. In addition to the opening 6a, the bottom of the combustion chamber 1 has an intake hole 7 for supplying outside air necessary for burning the solid fuel in the grooved combustion pot 5. Furthermore, in order to burn the solid fuel, a pellet charging hole 9 for charging the solid fuel is attached. The solid fuel introduced from the pellet introduction hole 9 is a small solid fuel 8 obtained by finely crushing a wood-based material and then solidifying it again. The pellet injection hole 9 is used to inject the small solid fuel 8 toward the grooved combustion pot 5 attached to the combustion chamber 1 by burning the solid fuel, and is attached to the rear of the combustion chamber 1 in the figure. (It does not have to be behind). In addition, there are openings described later. Arrows indicated by double lines in the figure indicate combustion gas and air flow paths.

Background A grooved combustion pot 5 is mounted on the ash receiving chamber 6 at the bottom of the combustion chamber 1 as shown in the perspective view of FIG. This groove type combustion pot 5 faces the groove type so that the small solid fuel 8 introduced from the pellet introduction hole 9 does not fall into the ash receiving chamber 6 below the combustion chamber 1 from the front-rear direction of the introduction direction. It has the fall prevention members 10 and 10 installed upright. The fall prevention member 10 is an inclined surface in the embodiment, but may be a vertical surface. Between the fall prevention members 10 and 10, a longitudinal section is a groove 11 formed in an inverted trapezoidal shape (or V shape, U shape, etc.). Sealing blades 12 that seal the gap between the inner wall of the combustion chamber 1 as horizontal blades or inclined blades are provided at both upper and lower blades at the front and rear of the inverted trapezoidal groove 11 (front and rear direction in the direction of solid fuel injection). Projected. A plurality of small air intake holes 13 that assist combustion of the small solid fuel 8 are formed at arbitrary positions at arbitrary positions in the fall prevention members 10 and 10 erected facing the groove type combustion pot 5. Yes. The bottom side of the grooved combustion pot 5 having an inverted trapezoidal longitudinal section is a pan 15 having a large number of openings 14 (openings can be provided in the base, and the pan can be detachably attached to the openings. ). A locking projection 16 for locking the sealing blade 12 is provided at a predetermined position on the inner wall of the combustion chamber 1. When the sealing blade 12 is placed, a groove is formed on the ash receiving chamber 6 below the combustion chamber 1. The mold combustion pot 5 is detachably attached (see FIG. 1). In the figure, this locking projection 16 protrudes to an arbitrary position on the inner wall of the combustion chamber 1 and the both sealing blades 12 and 12 at the upper end of the grooved combustion pot 5 are locked. The projecting position is arbitrary, and any shape and any position may be used as long as the grooved combustion pot 5 is detachably attached to the combustion chamber 1. The direction of the groove 11 of the groove-type combustion pot 5 attached in the combustion chamber 1 is a direction orthogonal to (or intersects with) the charging direction of the small solid fuel 8 charged from the pellet charging hole 9. In FIG. 2, both sealing blades 12 projecting from the upper end of the grooved combustion pot 5 abut on the inner wall of the combustion chamber 1, and between the upper end of the grooved combustion pot 5 and the inner wall of the combustion chamber 1. Although shown with the gap closed, a gap may exist between the upper end of the grooved combustion pot 5 and the inner wall of the combustion chamber 1. Accordingly, the locking projections 16 projecting in both directions at the upper end of the grooved combustion pot 5 may be eliminated or shortened to leave a gap between the upper end of the grooved combustion pot 5 and the inner wall of the combustion chamber 1. Further, the width of the upper end of the groove 11 of the grooved combustion pot 5 is widened (without both sealing blades 12, 12) and brought into contact with the inner wall of the combustion chamber 1, thereby burning the upper end of the grooved combustion pot 5 and the combustion. It is also possible to eliminate a gap between the inner walls of the chamber 1.

  In the above configuration, both the sealing wings 12, 12, the fall prevention members 10, 10 and the eye plate 15 can be integrally formed by, for example, pressing one steel plate, and groove type combustion. The configuration of the pot 5 is simplified, and the cost can be reduced. Both ends of the groove 11 of the groove-type combustion pot 5 may be left open, and the inner wall of the combustion chamber 1 should have a slight gap at least one end for dropping fuel ash.

  In addition, a heater 17 serving as a heat source for igniting the small solid fuel 8 introduced into the groove-type combustion pot 5 is attached to the lower part of the drop-preventing member 10 erected opposite to the groove-type combustion pot 5 so as to attach a heater 17. A heater insertion hole 18 that passes through the peripheral wall of the combustion chamber 1 from the outside and reaches the opening 5 a in the grooved combustion pot 5 is attached. The heater 17 is removably inserted into the heater insertion hole 18. A lead wire 17a is attached to the heater 17, the lead wire 17a is connected to an external power source (not shown), and an on / off switch (not shown) is further attached. In the figure, the heater 17 has only the tip exposed in the lower opening 5a of the grooved combustion pot 5, but the main part of the heater 17 is exposed and the small solid fuel 8 introduced into the grooved combustion pot 5 is exposed. Any other method may be used as long as the small solid fuel 8 can be ignited, for example, by incorporating a dry battery as a power source.

  Note that solid fuel of a size and shape that cannot be charged from the pellet charging hole 9 such as soot, coal, briquette, or the like, which is a kind of plant-derived solid fuel, opens the door 1 b attached to the opening 1 a of the combustion chamber 1. Thus, it is inserted directly onto the grooved combustion pot 5.

  In the combustion appliance having the above-described configuration, the direction in which the wood pellets as the small solid fuel 8 derived from the plant is input to the groove-type combustion pot 5 from the input hole 9 and the longitudinal direction that is the direction of the groove 11 of the groove-type combustion pot 5 are They are mounted orthogonally (or crossed) in the combustion chamber 1. The small solid fuel 8 introduced into the groove-type combustion pot 5 in this way is blocked by the fall prevention member 10 erected on both sides of the groove 11 of the groove-type combustion pot 5. The length of the groove 11 is such a length that does not fall into the ash receiving chamber 6 from both ends of the groove 11 when the pellet thrown in from the pellet throwing hole 9 collides with the fall prevention member 10 and bounces back. When the speed of the pellet fed from the pellet feeding hole 9 is high, the speed becomes long, and when the speed is slow, the speed can be shortened. Further, the small solid fuel 8 that has become lighter by burning and the ash produced by the combustion of the small solid fuel 8 are sequentially applied to the end of the groove-type combustion pot 5 by the impact when the small solid fuel 8 that has been charged later is charged. It moves in the direction of the portion and becomes ash and falls into the ash receiving chamber 6 below from the opening or gap at the end of the grooved combustion pot 5. Further, part of the ash rises into the combustion chamber 1 by the intake air sucked from the opening 14 of the eye plate 15 and the air suction hole 13 of the fall prevention member 10, and finally the opening of the end of the groove-type combustion pot 5 or Falls into the ash receiving chamber 6 below from the gap. As described above, the ash on the groove-type combustion pot 5 is sucked from the impact when the small solid fuel 8 to be charged one after another, the opening 14 of the eye plate 15, and the air suction hole 13 of the fall prevention member 10. It moves by intake air, and falls sequentially from the end of the groove-type combustion pot 5 to the ash receiving chamber 6. Therefore, the ash does not collect excessively on the groove-type combustion pot 5, and even if a small solid fuel containing a large amount of low-quality raw materials such as bark is burned, the clinker adheres to the eye plate 15 and the fall prevention members 10 on both sides. The eye plate 15 is blocked, and the combustion of the small solid fuel is hardly disturbed. As a result, the inflow of the intake air from the opening 14 of the eye plate 15 and the air intake hole 13 of the fall prevention member 10 necessary for burning the small solid fuel 8 is not hindered.

  As shown in the longitudinal sectional view of FIG. 3, the bottom plate 21 of the groove-type combustion pot 20 is formed as an inclined surface. In the figure, the inclined eye plate 21 is illustrated as a single-flow type eye plate that gradually decreases from left to right. Any shape that can easily fall naturally from the end of the groove-type combustion pot 20 may be used. One or more small solid fuel movement restraining members 22 (22a, 22b, 22c, 22d) are attached to arbitrary positions on the inclined eye plate 21. In the figure, the small solid fuel movement suppressing member 22 is shown in cross section, but the small solid fuel movement suppressing member 22a having a round cross section on the left side is located at a predetermined distance from the eye plate 21 in the longitudinal direction of the grooved combustion pot 20. It is a round bar (or square bar) attached in a direction orthogonal (or crossing). The small solid fuel movement restraining member 22c having a round cross section on the right side of the center is a round bar directly mounted on the eye plate 21 in a direction orthogonal to the longitudinal direction of the grooved combustion pot 20 (or may be crossed). The small solid fuel movement suppressing member 22b having the cross section is a band plate directly attached in a direction orthogonal to the longitudinal direction of the groove-type combustion pot 20 on the eye plate 21 (or may be crossed). Further, the small solid fuel movement restraining member 22d shown as a plurality of irregularities on the right side are a plurality of small irregularities formed on the eye plate 21 at random. That is, the shape and size of the small solid fuel movement suppressing member 22 can be changed as necessary.

  As shown in the figure, the small solid fuel is thrown into a high position of the eye plate 21 formed as an inclined surface, and the heater 17 that ignites the charged small solid fuel has the eye plate 21 at a high position of the eye plate 21. Install so that it faces up. The small solid fuel ignited by the heater 17 starts to combust at the position where it has been charged, and easily moves to the lower side of the eye plate 21 due to the small solid fuel to be charged later, but before the combustion proceeds, the eye plate 21 If it moves too low, it will fall to the lower ash receiving tray 6b from the end of the groove-type combustion pot 20 in an incomplete combustion state. A small solid fuel movement restraining member 22 is provided to prevent the phenomenon of falling into the lower ash receiving tray 21 in the incomplete combustion state. Therefore, the small solid fuel movement restraining member 22 is inclined so that the small solid fuel easily moves from a high position to a low position of the eye plate 21 as the small solid fuel burns. For this reason, in the drawing, the small solid fuel movement suppressing member 22a is attached with a relatively thin round bar at a position slightly away from the top plate 21 so as to intersect the longitudinal direction of the grooved combustion pot 20. The next small solid fuel movement restraining member 22b has a strip attached to the top plate 21 so as to intersect the longitudinal direction of the grooved combustion pot 20. The third small solid fuel movement restraining member 22 c has a thin round bar mounted on the eye plate 21 so as to intersect the longitudinal direction of the grooved combustion pot 20. The small solid fuel movement restraining member 22d on the right side is randomly attached on the eye plate 21 as a plurality of small irregularities (projections). The shape and mounting position of the small solid fuel movement restraining member 22 shown above are merely examples, and small solid fuels that have been reduced in weight by the progress of combustion of the small solid fuels are sequentially applied by the impact of the small solid fuels that are introduced later. Any shape that moves toward the lower side of the eye plate 21 may be used. In addition, the combustion ash generated by the combustion of the small solid fuel is a plurality of holes 14 formed in the fall prevention member 10 erected so as to face the many openings 14 formed in the eye plate 21 and the groove type combustion pot 20. The air sucked from the small air suction hole 13 rises into the combustion chamber 1 and falls into the ash receiving chamber 6 below from the opening or gap between the end of the groove-type combustion pot 20 and the inner wall of the combustion chamber 1. It will be.

  In the combustion appliance having the groove-type combustion pot 20 having the above-described configuration, the small solid fuel that has been charged is blocked by the small solid fuel movement restraining member 22, and the combustion of the small solid fuel proceeds and reaches a predetermined size. It will continue to burn on the pot 20. Therefore, only when the small solid fuel burns completely into ash, it falls from the end to the lower ash receiving chamber, and there is no small solid fuel discarded together with the ash with incomplete combustion, and a high combustion temperature A combustion appliance with high combustion efficiency was obtained.

  The grooved combustion pot and the combustion appliance of the present invention are not limited to the above-described embodiments, and can be arbitrarily combined with each configuration shown in the examples, and within the scope not departing from the gist of the present invention. Various changes can be made in.

  The grooved combustion pot and combustor of the present invention can be used as a heating appliance capable of burning not only wood pellets, which are plant-derived fuels, but also firewood and coal.

It is a longitudinal cross-sectional conceptual diagram which shows the combustion appliance of this invention. It is an expansion perspective view which shows the groove type combustion pot of this invention. It is a longitudinal cross-sectional view which shows the groove type combustion pot of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combustion chamber 1a Opening 1b Openable / closable door as sealing body 2 Partition in combustion chamber 3 Space 4 Exhaust hole 4a Exhaust fan 5 Groove-type combustion pot 6 Ash receiving chamber 6a Opening communicating with outside of ash receiving chamber 6b Ashes Receptacle 7 Suction hole for supplying outside air 8 Wood-based small solid fuel 9 Pellet injection hole 10 Drop prevention member 11 Groove 12 whose longitudinal section is inverted trapezoidal (or V type, U type, etc.) 12 Sealing blade 13 Fall prevention member Air intake hole 14 Opening 15 Eye plate 16 Engaging projection 17 for engaging the sealing blade Heater 17a as a heat source Heater lead wire 18 Heater insertion hole 20 Groove-type combustion pot 21 Eye plate 22 formed as an inclined surface Small size Solid fuel movement suppression member

Claims (5)

The combustion chamber has a combustion chamber whose lower part is an ash receiving chamber, and is attached to a combustion appliance having a pellet charging hole for charging a plant-derived small solid fuel that burns in a combustion pot attached to the combustion chamber toward the combustion pot. A combustion pot,
Preventing the falling of the small solid fuel introduced from the pellet introduction hole from the front-rear direction of the injection direction to the ash receiving chamber below the combustion chamber so as to face the small solid fuel injection direction. A wall and a pan that is formed between the lower ends of the fall prevention wall, wherein the fall prevention wall and the pan are formed integrally from the same member and in a groove shape. Groove-type combustion pot. The groove mold according to claim 1, wherein the eye plate is formed as an inclined surface that gradually decreases from one end to the other end of the groove-shaped combustion pot or from the center to both ends. Burning pot. The groove type combustion pot according to claim 1 or 2, wherein a longitudinal section of the groove type combustion pot is formed in an inverted trapezoidal shape, a V shape or a U shape. The grooved combustion pot according to any one of claims 1 to 3, wherein a small solid fuel movement suppressing member is provided on the eye plate. The combustion apparatus according to any one of claims 1 to 4, further comprising the grooved combustion pot according to any one of claims 1 to 4.

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