JP6598631B2 - Combustion cylinder for primary combustion of wood pellet heater - Google Patents

Description

  The present invention is a heater that is effective as a heater for a house and does not increase CO2 (carbon dioxide) because it uses renewable energy, and is a so-called wood pellet (woody biomass fuel). The present invention relates to a combustion cylinder for primary combustion of a heater (it is an ignition part by a flame of a burner and becomes a primary combustion cylinder).

  In recent years, there has been a demand for a global warming problem due to greenhouse gases such as CO2, that is, reduction of CO2. In view of this, a combustor (combustion furnace) using wood-based biomass fuel (wood pellets) is required as a heating means for a house.

  In this kind of wood pellet combustor, wood pellet fuel (fuel) becomes ash after combustion, the amount of which varies depending on the type of fuel, but ash may accumulate on the grate (fuel pan, rooster). is there. Since the deposition may disturb the flow of combustion air and the combustion state may become unstable, the invention of Japanese Patent Application Laid-Open No. 2010-164261 (Document 1) has been proposed as an improvement. The present invention has a structure in which the combustion ash in the combustion chamber is positively discharged by a stirring blade to eliminate ash accumulation and to maintain a stable combustion state. That is, the accumulated ash (combustion residue) is exposed to high-temperature heat to become vitreous, and the functional failure due to deformation of the stirring blade or adhesion of vitreous is avoided. However, since this document 1 requires at least a stirring blade and a device for the combustion dish, it is conceivable that the apparatus is complicated and the cost is increased.

  Other related inventions include an apparatus for forcibly removing ash and maintaining a stable combustion state. For example, it is Unexamined-Japanese-Patent No. 2004-270980 (reference 2), and the grate is a movable which can perform the burning operation which crushes a fire bed by moving while interfering with the fire bed deposited on it. Since the movable body is always in the combustion cylinder, the problem is that it is exposed to high-temperature heat and deformation or glassy adhesion occurs, or the deterioration of equipment such as the movable body due to oxidation is fast. There may be a problem. Japanese Patent Laying-Open No. 2005-201575 (Reference 3) has a structure in which solid fuel ash (combustion residue) is pulverized inside the combustion dish and a rotating shaft that discharges ash is provided. Therefore, it is necessary to provide a pulverizing means and the like, and a device is required for the combustion container, so that the apparatus is complicated and the cost is significantly increased.

JP 2010-164261 A JP 2004-270980 A JP 2005-201575 A

  In order to solve the problems of the prior art, the present invention has the following objects.

  1. ) The combustion cylinder of the wood pellet heater (for primary combustion) is provided with a structure that is equipped with an input shooter and a sloped ridge to ensure combustion and abbreviate fuel and / or burning debris. Completely burns and maintains a stable combustion state. That is, the structure is such that ash does not accumulate on the grate (the ash does not substantially remain). Or, by increasing the combustion efficiency and eliminating combustion gas and debris and almost eliminating the remaining ash (making ash as zero as possible), the number of cleanings inside the combustion cylinder can be reduced, and maintenance management It should be easy.

  2. ) The ash is exposed to high temperature heat to be deformed, and the grate and the inner surface of the glass (glass lump) are eliminated, and the grate, the combustion cylinder, the inner surface of the combustion pit, etc. are oxidized. It is possible to eliminate deterioration due to.

  3. ) Complete combustion with a combustion cylinder for primary combustion, or use combustion gas and combustion debris in a combustion furnace for secondary combustion and / or a combustion pit for tertiary combustion connected to the combustion cylinder It can be transported reliably and complete combustion can be achieved.

  4). Since the combustion residue becomes ash and is collected by the cyclone dust collector, no ash remains in the combustion cylinder, the combustion furnace for secondary combustion, and / or the combustion pit for tertiary combustion. Accordingly, cleaning of burnt residue and ash in a combustion cylinder, a combustion furnace for secondary combustion, etc. is performed once a month or unnecessary.

  The present invention is the above-described 1. ) To 4. In order to achieve the above, claims 1 to 6 are proposed.

The invention of claim 1 includes a combustion cylinder for primary combustion that functions as a combustion mechanism having an ignition burner, a combustion fan, and a wood pellet injection pipe, and a combustion furnace for secondary combustion connected to the combustion cylinder, and / or, a combustion cylinder for the primary combustion of wood pellets heater made comprise combustion pit for tertiary combustion in the delivery side of the combustion furnace,
The feeding pipe is additionally provided a reach-up chute inside a combustion cylinder, and in the inner bottom surface of the combustion cylinder, and the tip position of the dosing chute, and attaching a slant convex, inclined surface of the slant convex A hollow is provided at the center in the width direction of the wood , and the hollow is a combustion cylinder for primary combustion of a wood pellet heater having a structure that serves as a passage for a flame, and has the following characteristics.

1. ) The combustion cylinder for primary combustion has a structure in which an input shooter and an inclined mountain portion having a depression that serves as a passage for a flame are provided in the center to ensure combustion, fuel, and / or combustion residue. And so on, and a stable combustion state is maintained, and ash is not deposited on the grate (the ash does not substantially remain). Or, at the same time, the number of cleanings in the combustion cylinder is reduced to facilitate maintenance management. Furthermore, it is effective for the flow of burned residue.

  2. ) Ashes can be exposed to high-temperature heat to be deformed, and the glass can be prevented from adhering to the grate and the inner surface of the equipment, and deterioration due to oxidation of the grate and the inner surface of the equipment can be eliminated.

  3. ) Complete combustion is performed in the combustion cylinder for primary combustion, but if there are combustion gas and combustion debris, the combustion furnace for secondary combustion and / or tertiary combustion connected to the combustion cylinder It can be reliably transported to the combustion pit and complete combustion can be achieved.

  4). ) Since the combustion residue becomes ash and is collected by the cyclone dust collector, no ash remains in the combustion cylinder, the combustion furnace for secondary combustion, and / or the combustion pit for tertiary combustion. Cleaning of burnt residue and ash in a combustion furnace for secondary combustion or the like is about once a month or unnecessary.

  In the second aspect of the invention, the sloped mountain portion has a sloped apex at the wall surface of the opening that contacts the open / close door provided on the inlet side of the combustion cylinder, and the inclined main body extends from the apex to the inside of the combustion cylinder. The combustion cylinder for primary combustion of the wood pellet heater, which is gradually lowered and has a bottom end and the same surface at the end of the inclined body portion, and forms an inclined mountain portion. 1. Description And 2. ), And 4. ) Can be provided.

  According to a third aspect of the present invention, the input shooter is a combustion cylinder for primary combustion of a wood pellet heater that can be attached to a wood pellet input pipe. And 2. ), And 4. ) Can be provided.

  According to a fourth aspect of the present invention, the charging shooter is a combustion cylinder for primary combustion of a wood pellet heater that allows wood pellets to get over the abutting opening wall surface of the combustion cylinder and reach the inside of the bottom surface. 1. As described in 1. ) To 4. ) Can be provided.

The invention according to claim 5 is the combustion cylinder for primary combustion of the wood pellet heater that can be attached to the bottom surface of the combustion cylinder. ) To 4. It is possible to provide an inclined mountain structure that is optimal for achieving the above.

  The invention according to claim 6 is a combustion cylinder for primary combustion of a wood pellet heater which is on the delivery side of the combustion furnace, and at least combusts the combustion gas and the combustion residue in the air and allows combustion. 1. ) To 4. It is possible to provide an optimal combustion pit structure for achieving the above.

Scale conceptual diagram showing the entire heater in cross-section The perspective view of the whole apparatus which showed the state installed in the house including the whole heating machine An overhead view of the entire apparatus shown in FIG. An overhead view showing the combustion cylinder (ignition burner, combustion fan, etc.) of the heater and the main body of the combustor in the main part of the apparatus shown in FIG. An overhead view showing the combustion cylinder of the heater, the combustion furnace, and the flue in the main part of the apparatus shown in FIG. The main part of the apparatus shown to FIGS. 1-2, The bird's-eye view which showed the state which opened the opening-and-closing door of the combustion cylinder of the heater An enlarged schematic diagram showing the concept of the combustion cylinder and combustion furnace of the heater The enlarged schematic diagram which showed the concept of the combustion cylinder and combustion furnace of the heater shown in FIG. In the main part of the apparatus shown in FIG. 1-2, an enlarged overhead view showing the delivery side of the combustion furnace of the heater and the tertiary / quaternary combustion pits and flues on the delivery side An enlarged overhead view seen from the delivery side showing the rooster and second combustion pit extracted from FIG. An enlarged overhead view seen from the inlet side showing the rooster and second combustion pit extracted from FIG. Further enlarged cross-sectional view of the main part of the rooster that becomes the second combustion pit extracted from FIG. An enlarged overhead view showing the delivery side of the combustion furnace of the heater and the tertiary and quaternary combustion pits on the delivery side in the main part of the apparatus shown in FIG. A perspective view showing the tertiary and quaternary combustion pits shown in FIG. 5-1 overhead view Scale conceptual diagram showing the charging shooter provided in the combustion cylinder and the inclined hill portion serving as the burned residue feed guide provided in the combustion cylinder. In the conceptual diagram of FIG. 6A, (a) is the initial charging state of the wood pellet, (b) is the ignition state of the wood beret, (c) is the combustion state of the wood pellet and the high combustion arrival state, (D) is a post-purge situation, and a scale schematic diagram illustrating each situation of wood pellets and accumulated ash, showing the situation where the burned residue is sent to the combustion furnace, respectively. It is a schematic diagram showing a glass lump from which the burnt residue has crystallized (vitrified) and has stuck to the equipment, and various harmful effects can be considered. In the conventional conceptual diagram, (a) shows the initial input situation of the conventional wood pellet, (b) shows the ignition situation of the wood pellet, and (c) shows the conventional wood pellet combustion and high combustion arrival situation. , (D) is a conventional post-purge situation, and shows the situation where burnt residue remains at the outlet of the ignition burner and the combustion pit for the third combustion, respectively. Scale schematic diagram explaining each situation with

  In FIGS. 1 to 1-3 showing an example of the entire apparatus of the present invention, the outline of the components (parts) is box-shaped (an example), and sucks into the top plate surface Z (outer peripheral upper side Z1). A wood pellet combustor main body A provided with a hole 1, an ignition burner, a combustion fan, etc., which will be described later (hereinafter omitted in this paragraph) connected to a combustion furnace C described later, which is a main part of the combustor main body A. Combustor main body A having the combustion mechanism B (combustion cylinder) and the combustion mechanism B on one side (combustion furnace inlet side X1) and the other side (combustion furnace delivery side Y1) communicating with the flue And an induction fan D provided in the pipe communicating with the flue connected to one side (rear surface O) of the combustor main body A, and provided between the pipe and the induction fan D. A dust collector E and an inlet for a wood pellet W (referred to as pellet W) connected to the inlet side X1; A transport mechanism F for dispensing (control) pellets W, a tank G connected to the transport mechanism F, consisting of a chimney I. Hereinafter, it demonstrates individually. Note that incidental facilities such as a dust collector E and a transport mechanism F are included in the entire apparatus, but this is just an example.

  The combustor main body A has a box shape as shown in FIGS. 1 to 1-3, a front surface X that becomes the inlet side X1 of the combustion furnace C, a rear surface Y that becomes the delivery side Y1 of the combustion furnace C, and the combustion The top plate surface Z that is the outer peripheral upper side Z1 of the furnace C, the rear surface O that is the outer peripheral back side O1 of the combustion furnace C, and the front surface P that is the outer peripheral front side P1 of the combustion furnace C. The top plate surface Z includes an air suction hole 1 and a fan 2 immediately above the hole 1. Accordingly, the rotation of the fan 2 allows the outside air to be fed into the space R (the upper portion of the combustion furnace C) formed by the inner surface A1 of the combustor body A and the outer peripheral upper side Z1 of the combustion furnace C through the hole 1.

  As shown in FIGS. 1-1 to 1-5, the combustion mechanism B is cylindrical and has a cylindrical primary combustion combustion projecting on the inlet side X1 (front portion described later) of the combustion furnace C. Cylindrical body 3, open / close door 3a for opening and closing one of the combustion cylindrical bodies 3, ignition burner 4 (referred to as burner 4) attached to open / close door 3a, combustion fan 6 (push-in fan), and open / close door 3a And the pellet input shooter 7 extending from the upper side to the upper side of the open / close door 3a (the contact opening wall surface 3a-1 of the combustion cylinder 3). Therefore, after the pellet W is supplied from the pellet charging shooter 7 to the inside 11b from the inlet 11a of the grate 11 (from the contact opening wall surface 3a-1 of the combustion cylinder 3 to the inside 11b of the grate 11), the burner 4 It burns by the action of. Note that the air volume of the combustion fan 6 may be adjusted by the control means B1. This is for adjusting the combustion efficiency and negative pressure. The control means B1 regulates the chamber 8 connected to the combustion fan 6 provided under the combustion cylinder 3, the branched passages 9a and 9b provided in the chamber 8, and the amount of intake air passing through the passages 9a and 9b. And the damper 10 to be configured. This passage 9a is connected to the combustion cylinder 3, and the other passage 9b is connected to the delivery side Y1 of the combustion furnace C. Therefore, as shown in FIG. 1, by switching control of the damper 10, the amount of air from the combustion cylinder 3 to the main body C <b> 1 of the combustion furnace C and the lower part of the combustion furnace C (described below, the bottom C <b> 2 of the combustion furnace C) Control the amount of air to the upper space).

In addition, an inclined mountain portion 300 serving as a burned residue W1 feed guide is provided at the inlet 3-1 of the combustion cylinder 3, and the apex 300a of the inclined mountain portion 300 is located on the contact opening wall surface 3a-1. And it has the inclined surface 300b toward the inside 11b from this vertex 300a, and is provided with the hollow 300c at the center of the cylinder in end view. The depression 300c is a flame path and a sliding path such as a wood pellet W or a burning residue W1.
Therefore, the movement of the combustion cylinder 3 and the grate 11, the burner 4 and the wood pellet W, or the burned residue W1 will be described based on (a) to (d) of FIG. (A) is an initial charging state of the present invention, in which the flame of the charging shooter 7 and the burner 4 extending to the inside 11b is induced, and the burning residue W1 is reliably sent from the grate 11 to the combustion furnace C. It is in. As shown in the figure, the wood pellets W are charged by the charging shooter 7 at a stroke into the interior 11b (inside 3-2 of the combustion cylinder 3) of the grate 11 of the combustion cylinder 3, and are flat, Deposited in a thin state. Next, as shown in (b), in the ignition situation of the wood pellet W of the present invention, the flame of the burner 4 strikes the wood pellet W uniformly (reliably) (sprays) and strikes efficiently (fire). Street is good). Also, the ignitability is extremely excellent. Therefore, the temperature rise in the house is quick and has a positive effect on the crop. Thereafter, in (c) the combustion of the wood pellets W of the present invention and the high combustion arrival situation, the wood pellets W are introduced from the burning position W1 and the combustion waste W1 is reliably sent, so that the combustion waste W1 is removed from the flame outlet of the burner 4. As a result, the burned residue W1 does not collect on the contact opening wall surface 3a-1, and is sent to the combustion furnace C as described later. In addition, complete combustion can be achieved in the high-temperature combustion furnace C (high combustion reaches). Moreover, there is no generation | occurrence | production of the glass lump W0. Thereafter, as in (d), the post-purge situation of the present invention is reached, and the combustion residue W1 is sent to the combustion furnace C by the negative pressure phenomenon of the combustion furnace C as high combustion is reached. The negative pressure phenomenon (negative pressure state) is achieved by movement of air and combustion air by the combustion fan 6 and the induction fan D and forced suction. An annular passage 3-3 is formed between the inlet 3-1 of the combustion cylinder 3 and the inlet 11a of the grate 11, and serves as a path for air and / or flame. Further, in the post-purge situation after the improvement, the glass lump W0 of FIG. 7 is not generated, and the combustion residue W1 (ash) is prevented from being exposed to high-temperature heat, and the ash becomes vitreous, and the grate 11 Such as adhesion to equipment, etc., and prevention of glassy (glass lump), etc., and elimination of deterioration due to oxidation of the grate 11, the inner surface of the combustion cylinder 3, the tertiary combustion pit 30, etc. There is.

  An example of the overall form of the combustion furnace C is cylindrical as shown in the drawings, and the structure of the outer peripheral surface is the inlet side X1 of the combustion furnace C, the delivery side Y1 of the combustion furnace C, and the combustion It consists of the outer peripheral upper side Z1 of the furnace C, the outer peripheral back side O1 of the combustion furnace C, and the outer peripheral front side P1 of the combustion furnace C. A primary combustion cylinder 3 is provided on the inlet side X1 of the main body C1 of the combustion furnace C. A hot air outlet 12 is provided at a position below the combustion machine B on the front surface X and the rear surface Y of the combustor main body A, and a duct H is attached to the hot air outlet 12. In the front part C3 of the combustion furnace C, the above-described combustion cylinder 3 is provided. Moreover, the structure of the inner peripheral surface has a bowl shape in a transverse section (cross section in the short direction perpendicular to the longitudinal direction) installed in a low slope shape from the inlet side X1 toward the longitudinal direction of the delivery side Y1. A rooster 16 having an air passage 9c is provided. The rooster 16 includes an outer bottom plate 16a provided with a space in a main body C1, which will be described later, an inner bottom plate 16b provided on the outer bottom plate 16a with a space therebetween, and between the outer bottom plate 16a and the inner bottom plate 16b. The passage 9c (interval) formed on the inner bottom plate 16b, the blow slit 17 which is opened laterally in the longitudinal direction of the inner bottom plate 16b, and the flow direction of the inner bottom plate 16b (synonymous with the longitudinal direction). The side surface 16c (weir), and the inlet side Q1 of the rooster 16 are extended to the inlet side X1 of the combustion furnace C, and the mounting portion 16d is installed on the lower surface of the grate 11 on the opening side. To do. On the inlet side X1 of the combustion furnace C, a blowout port for the combustion cylinder 3 is provided. Moreover, the sending side R1 of the rooster 16 is connected to the upper surface of the room of the tertiary combustion pit 30 described later. In the present invention, at least the pellet W or the combustion gas or the like that has floated in the space between the inner bottom plate 16b and the main body C1 of the combustion furnace C, the combustion gas, etc. Then, it is transferred toward the delivery side Y1 by the suction force of the attracting fan D. The main component is the wind (blowing air) from the blowing slit 17 of the rooster 16. This wind has a function of pressing the burned / combusted pellet W or combustion gas, etc., which is transported on the surface, toward the delivery side Y1, and a function of floating the pellet W or combustion gas in the space. As a result, complete combustion and efficient combustion are ensured.

  The preferred configuration of the rooster 16 will be described. The rooster 16 is formed of an outer bottom plate 16a, an inner bottom plate 16b, and both side surfaces 16c and 16c that are oppositely widened in an inclined direction from both ends of the inner bottom plate 16b. The inner bottom plate 16b forms a first blowing slit 17a to an nth blowing slit 17n (blowing slit 17) at the joint of a large number of bottom plates 16b1. In this example, the first bottom plate 16b1-a is provided with a plurality of second bottom plates 16b1-b to nth bottom plates 16b1-n sequentially, and the delivery side R1 of the first bottom plate 16b1-a. The inlet side Q1 of the second bottom plate 16b1-b is stacked below, and the inclination angle of the sending side R1 of the first bottom plate 16b1-a is maintained (the downward inclination angle). The inclination angle of the inlet side Q1 of the bottom plate 16b1-b is reduced (bent toward the bottom C2 of the combustion furnace C) to constitute the first blowing slit 17a (that is, the first blowing air passage). Similarly, the second outlet plate 17b1-b and the inlet side Q1 of the nth bottom plate 16b1-n constitute a second outlet slit 17b (that is, the second outlet air passage), The same applies hereinafter. Combusted and burned pellets W floating in the space, combustion gas, etc., by the air blown from each blowing slit 17 (each blowing air passage) and the soot-shaped space band surrounded by the side surfaces 16c Is transferred toward the delivery side Y1 of the combustion furnace C by at least the synergistic effect of the pushing force and the soot shape. Further, floating in the space and / or the tertiary combustion pit 30 is guaranteed. Although not shown in the figure, the inclination angle of the sending side R1 of the first bottom plate 16b1-a is maintained (the downward inclination angle), the inclination angle of the inlet side Q1 of the second bottom plate 16b1-b is similarly maintained, and Similarly, the first blowing slit 17a can be configured while maintaining the inclination angle of the inlet side Q1 of the nth bottom plate 16b1-n.

  In the rear part C4 of the combustion furnace C, as shown in FIG. 1, FIG. 4, and FIG. 5, the delivery side Y1 has a bottom surface 31 that is one step lower and / or two steps lower than the bottom C2. A secondary combustion pit 30 having a bottom surface 41 and a tertiary combustion pit 40 having a bottom surface 41 are formed. In the tertiary combustion pit 30, suction grooves 32 and 32 (inlet slits) opened on the front and back surfaces P and O sides of the bottom surface 31 of the combustion furnace C are formed. Further, the quaternary combustion pit 40 is provided with a suction groove 42 opened on the bottom surface 41 and a lid 43 that is useful for discharging or repairing the burnt residue W1. Therefore, the combustion gas or burnt residue W1 sent to the tertiary combustion pit 30 and the quaternary combustion pit 40 has the suction groove 32 opened on the bottom surface 31 and / or the suction groove 42 (inlet slit) opened on the bottom surface 41. ) Ascending air flow sucked in and the suction force of the induction fan D soar into the space of the combustion furnace C (in the air of the tertiary and quaternary combustion pits 30 and 40) and burn as shown in FIG. In other words, it is almost completely burned and led to the flue 50 provided in the upper part of the combustor main body A. Hot air is generated through heat exchange between the combustion gas flowing through the flue 50 and the outside air sucked into the space R from the hole 1, and this hot air is passed through the hot air outlet 12 and the duct H to the house. It releases into the interior and heats it up.

  The induction fan D is connected to the dust collector E via the pipe 52 on the back surface O side (an example) of the combustor main body A, and the combustion gas and / or the combustion residue W1 of the combustion furnace C passes through the dust collector E. Suction. The negative pressure of the combustion furnace C is adjusted based on the relationship between the suction amount, the extrusion amount of the combustion fan 6, and the amount of pellets W present in the combustion furnace C. Further, after separating the burnt residue W1 (fine particles) centrifuged by the dust collector E connected to the pipe 52 connected to the induction fan D, beautiful air is diffused from the chimney I.

  1 to 1-2, the transport mechanism F is for the purpose of supplying the wood pellets W in a fixed quantity, the first screw conveyor 60 connected to the tank G containing the wood pellets W, and its motor. 61, a silo 62 provided with a sensor, a second screw conveyor 63, a motor 64 thereof, and a shooter 65 (input pipe) of the wood pellet W. Therefore, the wood pellets W collected at the bottom of the tank G are sent to the silo 62 by the drive of the first screw conveyor 60 and are quantitatively stored by the function of the attached sensor. Thereafter, when there is a command from a control panel J (control mechanism) provided on the surface P of the combustor main body A, the second screw conveyor 63 is driven, and the wood pellet W of the silo 62 is replaced with the pellet charging shooter 65. To supply to the combustion cylinder 3.

  The control panel J controls the operations of at least the amount of the wood pellet W, the motor 64, the ignition burner 4, the combustion fan 6, and the induction fan D as other functions. Negative pressure adjustment (maintenance of the negative pressure state) is achieved, and complete combustion and / or ensuring of combustion efficiency, prevention of backfire (backfire) of the wood pellets W before supply, and the like are achieved. The operation of the combustion furnace C and the operation and adjustment of the ignition burner 4, the combustion fan 6, and the induction fan D are performed.

  Next, a preferred example of combustion, wind (air), flow of combustion gas, etc., movement of the present invention will be described. The switch of the control panel J is turned on. The wood pellet W stored in the silo 62 is sent by the first screw conveyor 60 to the primary combustion cylinder 3 from the pellet charging shooter 65 as the second screw conveyor 63 is moved, and the flame from the ignition burner 4 The wood pellet W is ignited and starts to burn. In synchronization with this, the induction fan D and the combustion fan 6 function to bring the inside of the combustion furnace C into a negative pressure state, the pushing force of the combustion fan 6 and the air in the combustion furnace C of the induction fan D (combustion) Flame and flame gas from the inlet side X1 to the delivery side Y1 of the combustion furnace C by a force that pulls (pulls in) the outside air from the suction grooves 32 and 42 in some cases. (Combustion gas) flow is formed. The wind (air volume adjustment) of the combustion fan 6 is determined by adjusting the damper 10 and adjusting the balance of the amount of air flowing through the branch passages (passages 9a and 9b). That is, the amount of air from below the grate 11 required for the primary combustion of the wood pellet W and the amount of air required for the rooster 16 (secondary combustion pit 20) circle “” are determined, and the optimum combustion state is determined. To. As shown in FIG. 1, the rooster 16 and the bottom portion are formed by the blown air from the blowing slit 17 (blowing groove) of the rooster 16, the negative pressure state (negative pressure) in the combustion furnace C, and the pushing of air by the combustion fan 6. The wood pellets supplied by being blown out sequentially toward the main body C1 of the combustion furnace C from the inlet side X1 at a high position with C2 toward the delivery side Y1 at a low position between the rooster 16 and the bottom C2. While burning W, the structure is such that the combustion pellets W are transported, and the combustion gas and the burnt residue W1 are smoothly pushed from the inlet side X1 of the combustion furnace C toward the delivery side Y1 (inclination of the rooster 16). (The installation, the wind from the blowing slit 17, the structure converged toward the delivery side Y1, and the bowl shape formed by the inner bottom plate 16b and the side surface 16c are the structure for delivering as described above).

  Then, the blown-out combustion gas and burnt residue W1 are sent toward the tertiary combustion pit 30 so as to fluctuate in the main body C1 of the combustion furnace C (injected so as to be blown off), and the tertiary combustion pit 30 In this tertiary combustion pit 30 through the outside air from several suction grooves 32, as shown in FIG. 5, turbulence and complete combustion are achieved (the burned residue W1 of the wood pellets W accumulated in the tertiary combustion pit 30 is obtained). Soaring and further promoting combustion). This turbulence is caused by the fact that the quaternary combustion pit 40 is made one step lower than the tertiary combustion pit 30 and that the suction groove 42 is provided on the rear side (inlet side X1), as shown in FIG. Therefore, it can be surely achieved. Moreover, it has been confirmed in the implementation of the present invention at the manufacturing plant.

  Further, the fourth combustion pit 40 may be the same height as the third combustion pit 30.

  Thereafter, the combustion gas is sucked (flowed) into the multiple flues 50. Hot air is generated by heat exchange with the air existing in the space R surrounding the flue 50. The warm air is diffused into the house through the warm air outlet 12 and the duct H.

  Then, the combustion gas, the combustion residue W1, and the combustion ash are led to the dust collector E through the pipe 52 and / or the induction fan D and the pipe (not indicated), and, for example, by centrifugal separation, the combustion particles and the combustion ash, and Separated into clear combustion air, the combustion ash is accumulated in a predetermined box by the dust collector E, and the clear combustion air is diffused from the chimney I into the air.

  Incidentally, by providing the fourth combustion pit 40 and / or configuring the fourth combustion pit 40 one step lower than the third combustion pit 30, the flow of the suction air shown in FIG. It is considered that a swirl flow and an upflow sufficient to cause combustion gas and combustion ash to rise are generated (see FIG. 5).

  In the conventional conceptual diagram shown in FIG. 8 (in principle, the figure number is shown, but it is a temporary number), (a) is the initial charging state of the wood pellet W, and gradually and gradually from the pellet inlet. As shown in the figure, it is easy to be stacked in a dango shape by being supplied to the combustion cylinder 3. Therefore, as shown in FIG. The temperature rise in the house is slow and it takes time to adversely affect the crop.Naturally, as shown in (c), it takes time to burn the wood beret W and reach the high burnup state, and the combustion Burn residue W1 easily accumulates inside the cylinder 3 (grate 11) (D) is a post-purge situation, the outlet of the ignition burner 4 (inlet 3-1 of the combustion cylinder 3) and the third combustion. At the exit (rear part C4) of the combustion pit And Rukoto, glass block W0 is generated in FIG. 7 easily. Moreover, the adhesion to the equipment, there is a possibility that damage occurs.

  Each structure described above is a description of a preferred example of the present invention. Therefore, the present invention is not limited to the above-described embodiments, and structures that change a part of the configuration within the scope of the invention, structures that can achieve the same features and effects, and the like are within the scope of the present invention. It is.

A Combustor body A1 Inner surface 1 hole 2 Fan X Front surface Y Rear surface Z Top plate surface O Back surface P Surface R Space B Combustion cylinder 3 Combustion cylinder 3-1 Inlet 3-2 Internal 3-3 Passage 300 Inclined mountain part 300a Apex 300b inclined surface 300c depression 3a open / close door 3a-1 contact opening wall surface 4 ignition burner 6 combustion fan 7 charging shooter 8 chamber 9a passage 9b passage 9c passage 10 damper 11 grate 11a inlet 11b internal 12 hot air outlet B1 control means C combustion Furnace C1 Body C2 Bottom C3 Front C4 Rear 12 Warm air outlet 16 Rooster 16a Outer bottom plate 16b Inner bottom plate 16b1-a First bottom plate 16b1-b Second bottom plate 16b1-n Nth bottom plate 16c Side surface 16d Attachment portion 17 Blow slit 17a First blow slit 17b Second blow slit 17n nth X1 inlet side Y1 delivery side Z1 outer circumference upper side O1 outer circumference back side P1 outer circumference front side Q1 inlet side R1 delivery side 20 secondary combustion pit 30 tertiary combustion pit 31 bottom face 32 suction groove 40 fourth combustion pit 41 bottom face 42 suction groove 43 lid D Induction fan 50 Chimney 52 Piping E Dust collector F Conveying mechanism 60 First screw conveyor 61 Motor 62 Silo 63 Second screw conveyor 64 Motor 65 Shutter G Tank H Duct I Chimney J Control panel W Wood pellet W0 Glass lump W1 Burning residue

Claims (6)

A combustion cylinder for primary combustion that functions as a combustion mechanism having an ignition burner and a combustion fan, and a wood pellet input pipe, a combustion furnace for secondary combustion connected to the combustion cylinder, and / or this combustion A combustion cylinder for primary combustion of a wood pellet heater having a combustion pit for tertiary combustion on the delivery side of the furnace,
Wherein the feeding pipe is additionally provided poured chute leading to the interior of the combustion cylinder, and in the inner bottom surface of the combustion cylinder, and the end position of the closing chute, and attaching a slant convex, the slope mountain A combustion cylinder for primary combustion of a wood pellet heater , comprising a depression in the center of the inclined surface of the section in the width direction, the depression serving as a passage for a flame .   The top of the sloped mountain portion is the wall surface of the contact opening with the open / close door provided on the inlet side of the combustion cylinder, and the main body portion of the slope is directed from the top toward the inside of the combustion cylinder. The wood pellet heater for primary combustion according to claim 1, wherein the wood pellet heater becomes lower in order and the end of the inclined main body portion is formed on the same surface as the bottom surface to form the inclined mountain portion. Combustion cylinder.   The combustion cylinder for primary combustion of the wood pellet heating machine according to claim 1, wherein the charging shooter can be attached to the wood pellet charging pipe.   4. The wood pellet heater according to claim 1, wherein the charging shooter is configured to allow the wood pellets to pass over the abutting opening wall surface of the combustion cylinder and reach the inside of the bottom surface. 5. Combustion cylinder.   The combustion cylinder for primary combustion of the wood pellet heater according to claim 1, wherein the inclined mountain portion is configured to be attached to a bottom surface of the combustion cylinder.   The combustion for primary combustion of the wood pellet heater according to claim 1, wherein the combustion pit is configured to be able to burn at least by diffusing combustion gas and combustion residue in the air on the delivery side of the combustion furnace. Cylinder.