JP3218622U - Wood pellet primary combustion device and wood pellet combustion device combining it with a heater body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wood pellet combustion apparatus which is safe and simple, can be stably operated without misfire, and has improved portability.
SOLUTION: A primary combustion chamber 110 attached in communication with a heater body 200, a communication port 150 between the primary combustion chamber 110 and the secondary combustion chamber 210, and ventilation while supporting a wood pellet fuel M. Combustion car body 120 provided with a large number of holes or slits for ensuring the performance, and intake port 130 for primary combustion air provided at a position higher than the upper surface of combustion car body 120 and flowing from the top to the bottom of combustion car body 120 And a position lower than a part of the support surface of the wood pellet fuel M of the combustion car body 120 and a side different from the secondary combustion chamber 210, and passes through the combustion car body 120 toward the secondary combustion chamber. The secondary combustion air intake port 140 that flows in this manner is provided. It is provided so as to be detachable from various heater bodies 200.
[Selection] Figure 1

Description

  The present invention relates to a wood pellet combustion apparatus that uses wood pellet fuel as a heat source. For example, it can be applied as a stove, a stove cooker, or a grill cooker.

  In the prior art, a wood pellet combustion apparatus is known that uses wood pellet fuel as a heat source. Wood pellets are wood-processed fuel made by crushing and compressing sawdust, bark, timber, and thinned wood from the lumbering process. It is becoming popular to use this wood pellet fuel as a heat source for cooking utensils by burning it. The wood pellet combustor is a combustor that has been attracting attention in recent years because it is generally smaller, easier and has a higher combustion rate than a wood stove using firewood.

  In the wood pellet combustion device, the ignited wood pellet fuel will naturally continue to burn, so the wood pellet fuel burns only the wood pellet fuel and does not require an external commercial power source. Some of them require an external energy source that is equipped with an electric circuit, is operated by electronic control, and uses a commercial power source or the like.

As shown in Patent Document 1 (Japanese Patent Laid-Open No. 2006-078123) shown in FIG. 13, the former type has a simple internal configuration, and has a combustion chamber for burning wood pellets. It is equipped with a pellet supply part that supplies pellets, a combustion part that burns wood pellets, a heat exchange part that heats indoor air with its heat, an ash receiving part that receives ash under the combustion part, etc. Yes. It can be used anywhere if it is transported, and has the advantage of being easy and convenient.
The latter type includes an automatic ignition function and an automatic heating power adjustment as shown in Patent Document 2 (Japanese Patent Laid-Open No. 2004-316997) shown in FIG. 14 and Patent Document 3 (Japanese Patent Laid-Open No. 2010-230186) shown in FIG. It is equipped with functions, forced exhaust fans, etc. and can be operated automatically by electronic control.

JP 2006-078123 A JP 2004-316997 A JP 2010-230186 A

As described above, the widespread use of wood pellet combustion apparatuses is expanding.
However, there is a problem in these conventional wood pellet combustion apparatuses.
The former type of wood pellet combustion apparatus has a problem of unexpected misfire.
If liquid fuel such as kerosene is used, ash is not generated to the extent that soot is produced, but wood pellet fuel is a solid fuel, and a large amount of ash is generated with combustion. If the ash generated by the combustion of the wood pellet fuel covers the surface of the wood pellet fuel, the amount of air supplied to the wood pellet fuel becomes insufficient, and there is a risk of misfire.
For example, if an ash removal device that removes ash is added, or if a wood pellet fuel supply device that supplies wood pellet fuel to be placed on the ash one after another in the combustion chamber is added, Since uncovered wood pellet fuel is exposed to the burning fire, the risk of misfire is reduced. However, an electrically driven device such as an ash removal device or a wood pellet fuel supply device is required, and a commercial power source or a battery is required.

The latter type of wood pellet combustion apparatus is equipped with an automatic ignition function, an automatic heating power adjustment function, a forced exhaust fan, and the like, and can be operated to a certain extent. However, since an electric drive device is assumed, a commercial power source or a battery is required. That is, the wood pellet combustion apparatus is enlarged, and the place of use is limited, so that it is not portable.
In light of the above-mentioned conventional problems, the present invention has been reduced in size as a safe and simple device configuration, and moreover, can be stably operated without being equipped with a device part that is electrically driven, and is improved in portability. A pellet combustion apparatus is provided. For example, it is provided as a stove, a stove cooker, or a grill cooker.

  In order to achieve the above-mentioned object, the wood pellet primary combustion apparatus of the present invention is a wood pellet primary combustion apparatus that burns wood pellet fuel that has been put into the inside and uses it as a heat source, and is attached to a secondary combustion chamber. The combustion chamber body provided with a number of holes or slits that support the wood pellets and ensure the air permeability of the wood pellets, and the combustion chamber in the primary combustion chamber. A position higher than the upper surface of the car body, the intake port for primary combustion air flowing from the upper part to the lower part of the combustion car body, a position lower than a part of the support surface of the wood pellet fuel of the combustion car body, and A secondary combustion air intake port provided on a different side from the secondary combustion chamber and flowing through the combustion cage toward the secondary combustion chamber. A wood pellet primary combustion apparatus characterized by the.

  Here, in the wood pellet combustion apparatus of the present invention, it is preferable to control the combustion state of the wood pellet fuel. Therefore, it comprises a flap body attached to the intake port for secondary combustion air, the angle of the flap body with respect to the intake port for secondary combustion air is variable, and by changing the angle of the flap body, The flow rate of the intake port for the secondary combustion air can be controlled.

Next, as a structure for improving the downsizing and portability of the wood pellet combustion apparatus of the present invention, it is attached to a part of the outer wall of the primary combustion chamber in a state where both are connected to the secondary combustion chamber. The structure is equipped with a mechanism, the primary combustion chamber and the secondary combustion chamber can be separated, and if necessary, the main combustion chamber can be immediately attached to the housing with the secondary combustion chamber. It is preferable to be able to assemble the inventive wood pellet combustion apparatus.
Next, a device for preventing misfire of wood pellet fuel in the wood pellet combustion apparatus of the present invention will be described.

  First, the chimney effect is used to ensure a smooth flow of combustion gas and supply of new air. Therefore, an exhaust port that creates a chimney effect in the secondary combustion chamber is provided to efficiently draw in the secondary combustion gas and secondary combustion air generated by the primary combustion of the wood pellets sent from the primary combustion chamber. It is preferable that

  Secondly, one or a plurality of rectifying plates are provided in a passage extending from the combustion car body in the primary combustion chamber to the secondary combustion chamber in a vertical direction parallel to the flow of the secondary combustion air. The configuration is as follows. With the above configuration, it is possible to suppress the influence of turbulent flow that occurs when the air of primary combustion air descends from above to below.

Next, the device on the secondary combustion chamber side will be described.
The wood pellet combustor of the present invention is assembled as a wood pellet combustor by combining the wood pellet primary combustor and the heater body, but can be various depending on the structure of the secondary combustion chamber side. For example, it can be applied as a stove, a stove cooker, or a grill cooker.

  For example, in the case of a stove, it suffices if the main body of the heater is a housing and there is an exhaust mechanism that serves as an exhaust port. It can be used as a stove that radiates heat to the surroundings with heat radiated from the wood pellet primary combustion apparatus and the heater body.

  For example, if it is a stove cooker, it has a structure equipped with a stove table on which the heating object can be placed on the upper surface of the secondary combustion chamber, and a hole or slit is provided in the stove table to heat from the lower secondary combustion chamber. If the structure is easy to pass, it can be used as a stove cooker that allows cooking from below. By changing the shape, size, and number of holes and slits, the heating power and heating location of cooking can be adjusted. For example, slits are preferable for cooking utensils that are suitable for line-shaped heating such as takoyaki.

Further, for example, in the case of a grill cooker, a configuration including a grill base provided below the bottom surface of the secondary combustion chamber may be used, and a configuration of a heat storage body that emits far infrared rays may be used as the grill base. If it is this structure, it can be used as a grill cooker which can be cooked from the upper and lower sides with the heat from the upper secondary combustion chamber, and the radiant heat from the mounting base which is a heat storage body below. The heat storage body can emit far-infrared rays like pizza stone, making it easier to obtain the effect of a furnace.
In addition, when using it as a grill cooking device, there exists a device which makes the height of a grill stand variable as a thermal power adjustment means. What is necessary is just to set it as the structure provided with the height adjustment mechanism which makes the height of a grill stand variable in a secondary combustion chamber. By changing the height of the grill table by the height adjusting mechanism, the distance to the location where secondary combustion occurs can be adjusted, and the heating power can be adjusted.

According to the wood pellet primary combustion apparatus of the present invention, it is possible to provide a wood pellet combustion apparatus that is safe, simple, and downsized. In addition, the wood pellet primary combustion apparatus 100 according to the present invention is highly portable, and the wood pellet combustion apparatus 1 can be easily assembled by attaching the wood pellet primary combustion apparatus 100 to the heater body 200. For example, it can be assembled as a stove, a stove cooker, or a grill cooker.
After the heating body 200 has been used for cooking, heating, etc., the heater body 200 can be moved away from the heat source simply by removing the wood pellet primary combustion apparatus 100 from the heating body 200, so that the so-called fire extinguishing operation is simplified. .

It is a figure which shows simply the structural example of the wood pellet combustion apparatus 1 concerning Example 1 of this invention. 2 is a view mainly showing a primary combustion chamber 110. FIG. It is the figure which took out and showed the combustion cage | basket body 120. FIG. It is a figure which shows that the attachment accuracy of the flap body 141 provided in the intake port 140 for secondary combustion air is variable. It is a figure which shows simply the structural example of the attachment mechanism 160 and the attachment mechanism 270. FIG. It is a figure which shows simply the structural example of the heater main body 200a in the case of comprising the wood pellet combustion apparatus 1a as a stove. It is a figure which shows simply the flow of combustion, ventilation | gas_flowing, and secondary combustion gas in the wood pellet combustion apparatus 1a. It is a figure which shows simply the structural example of the heater main body 200b in the case of comprising the wood pellet combustion apparatus 1b as a stove cooker. It is a figure which shows simply the flow of combustion, ventilation | gas_flowing, and secondary combustion gas in the wood pellet combustion apparatus 1b. It is a figure which shows simply the structural example of the heater main body 200c in the case of comprising the wood pellet combustion apparatus 1c as a grill cooker. It is a figure which shows the example of a structure of the height adjustment mechanism 260, and the mechanism in which the height of the thermal storage body 250 is adjusted. It is a figure which shows simply the flow of combustion, ventilation | gas_flowing, and secondary combustion gas in the wood pellet combustion apparatus 1c. It is a figure which shows the wood pellet combustion apparatus in patent document 1 (Unexamined-Japanese-Patent No. 2006-078123) in a prior art. It is a figure which shows the wood pellet combustion apparatus of patent document 2 (Unexamined-Japanese-Patent No. 2004-316997) in a prior art. It is a figure which shows the wood pellet combustion apparatus in patent document 3 (Unexamined-Japanese-Patent No. 2010-230186) in a prior art.

An embodiment of the wood pellet primary combustion apparatus and wood pellet combustion apparatus of the present invention will be described. However, it goes without saying that the scope of the present invention is not limited to the specific application, shape, number, etc. shown in the following embodiments.
Hereinafter, the structural example of the wood pellet combustion apparatus 1a by the combination of the structural example of the wood pellet primary combustion apparatus 100 and the heater main body 200a as a stove is demonstrated as Example 1. FIG.
As Example 2, the structural example of the wood pellet combustion apparatus 1b by the combination with the heater main body 200b as a stove cooker is demonstrated.
As Example 3, a configuration example of a wood pellet combustion apparatus 1c in combination with a heater body 200c as a grill cooker will be described.

FIG. 1 is a diagram simply showing a configuration example of a wood pellet combustion apparatus 1 or 1a according to a first embodiment of the present invention. It is a side view, and there is a portion that is appropriately shown in cross section so that components mounted inside can be easily understood.
As shown in FIG. 1, the wood pellet combustion apparatus 1 is configured by a combination of a wood pellet primary combustion apparatus 100 and a heater body 200.
The wood pellet primary combustion apparatus 100 primarily burns the wood pellet fuel M input therein and uses it as a heat source. The heater body 200 can be detachably provided.

On the other hand, the heater body 200 is used in communication with the wood pellet primary combustion apparatus 100, and the secondary combustion gas and secondary combustion generated by the primary combustion of the wood pellet fuel M in the wood pellet primary combustion apparatus 100 are used. It receives the working air through the communication port, performs secondary combustion, and heats the outside air and the heated object.
The heater body 200 shown in FIG. 1 has a configuration in the case of a heater body 200a used as a stove and a heater body 200b used as a stove, as will be described later.

First, the wood pellet primary combustion apparatus 100 will be described.
The wood pellet primary combustion apparatus 100 includes a primary combustion chamber 110, a combustion car body 120, a primary combustion air intake port 130, a secondary combustion air intake port 140, a communication port 150, and an attachment mechanism 160 for the secondary combustion chamber 200. It is the composition provided with.

The primary combustion chamber 110 is a housing that provides a space for primary combustion of the wood pellet fuel M introduced therein.
FIG. 2 is a view mainly showing the primary combustion chamber 110. It is the figure which took out and showed the internal combustion car body 120 and the flap body 141 of an outer wall. In this example, the outer shape is a substantially rectangular parallelepiped shape, but a tapered surface 111 is provided in the inside so that the combustion car body 120 can easily be accommodated. As will be described later, the shape of the combustion car body 120 is provided with a tapered surface facing downward, and conforms to the shape.
The tapered surface 111 of the primary combustion chamber 110 is provided with a large number of slits 112 so that the ash produced by burning the wood pellet fuel M in the combustion car body 120 falls downward. . The combustion car body 120 is also provided with a slit 122, and the slit 112 of the primary combustion chamber 110 and the slit 122 of the combustion car body 120 overlap, and the wood pellet fuel M burns in the combustion car body 120. The generated ash falls downward.
Any material may be used as long as it has heat resistance, but metal such as iron or aluminum may be used for ease of processing at the time of manufacture.

The combustion car body 120 is a car body placed in the primary combustion chamber 110, and supports and stores the wood pellet fuel M therein.
FIG. 3 is a view showing the combustion car body 120 taken out.
A taper is provided so that the posture of the wood pellet fuel M can be easily gathered downward so that the posture of the wood pellet fuel M can be easily controlled, and a large number of holes or slits are provided so as to ensure air permeability to the wood pellet fuel M. A size in which the ash of the burned wood pellet fuel M does not pass but the unburned wood pellet fuel M does not pass is preferable. Here, it is assumed that many slits having a width of about 5 mm are provided.
The combustion car body 120 is placed in the temporary combustion chamber 110, but the placement structure is not limited. If the air is not placed directly on the bottom surface of the primary combustion chamber 110 but is carried in the air, air is more easily distributed, and air for secondary combustion described later is more likely to pass through. Here, supports are provided at the four corners, and the combustion car body 120 is placed on the support.

  The primary combustion air intake 130 is a primary combustion air intake that is provided at a position higher than the upper surface of the combustion car body 120 in the primary combustion chamber 110 and flows from the upper part to the lower part of the combustion car body 100. As will be described later, the primary combustion air taken in from the primary combustion air intake 130 is drawn into the primary combustion chamber 110 and passes through the wood pellet fuel M inside the combustion car body 120 to cause primary combustion. The generated secondary combustion gas is generated.

  The secondary combustion air intake port 140 is located at a position lower than the support surface of the wood pellet fuel M of the combustion car body 120 and is provided on the side different from the secondary combustion chamber 200. It is. Since the intake port 140 for the secondary combustion air is provided on the side different from the secondary combustion chamber 200, it flows through the combustion car body 120 in the direction of the secondary combustion chamber 200. As will be described later, the air is blown out toward the communication port 150 while being mixed with the secondary combustion gas generated by the primary combustion of the wood pellet fuel M of the combustion car body 120.

In this configuration example, the flap body 141 is provided in the intake port 140 for the secondary combustion air.
FIG. 4 is a diagram showing that the mounting accuracy of the flap body 141 provided in the intake port 140 for secondary combustion air is variable.
As shown in FIG. 4, the flap body 141 is rotatable about a rotation axis, and the angle changes so as to open and close the intake port 140 for secondary combustion air. By changing the angle of the flap body 141 with respect to the intake port 140 for secondary combustion air, the effect of controlling the air flow rate of the intake port 140 for secondary combustion air can be obtained.

  In the state shown in FIG. 4A, the flap body 141 stands vertically and closes the secondary combustion air intake port 140 so as to be shielded. In the state of FIG. 4B, the flap body 141 is inclined. Here, the angle is approximately 45 degrees from the horizontal plane. If it is the state of FIG.4 (b), the intake port 140 of the air for secondary combustion will ensure air permeability. Further, since the flap body 141 stands diagonally, even if the ash in the primary combustion chamber 110 accumulates and overflows from the secondary combustion air intake port 140, the ash or the like flows out beyond the flap body 141. There is nothing to do.

  The communication port 150 is a port that communicates the primary combustion chamber 100 and the secondary combustion chamber 200. In this configuration, the air is blown out toward the air passage 220 of the heater body 200 through the communication port 150 while being mixed with the secondary combustion gas generated by the primary combustion of the wood pellet fuel M of the combustion car body 120.

The attachment mechanism 160 is an attachment structure that is attached to a part of the outer wall of the wood pellet primary combustion apparatus 100 to the heater body 200.
The attachment structure for attaching both is not particularly limited. There can be various ways. There may be various types such as a fitting structure, a locking structure, a screwing structure, and a magnet attracting structure.
FIG. 5 is a diagram showing an attachment structure of the attachment mechanism 160 and the attachment mechanism 270 of the heater body 200. Here, as shown in FIG. 5, as the attachment mechanism 160, the wood pellet primary combustion apparatus 100 has a locking piece horizontally, and a slit 161 for receiving the locking piece is provided. On the other hand, in the air passage 220 on the heater body 200 side, there is a locking piece that is a mounting mechanism 270 erected vertically to allow the slit 161 to pass therethrough, and the slit 161 is engaged with the locking piece that is the mounting mechanism 270. It is structured to be attached by being stopped, and it can be easily attached and detached.

Next, the heater body 200 will be described.
The heater body 200 has various variations in configuration depending on the application.
There are a heater body 200a having a configuration suitable for use as a stove, a heater body 200b having a configuration suitable for use as a stove cooker, a heater body 200c having a configuration suitable for use as a grill cooker, and the like. In the present embodiment, a heater body 200a having a configuration suitable for use as a stove and a heater body 200b having a configuration suitable for use as a stove cooker will be described.

First, the heater main body 200a having a configuration suitable for use as a stove will be described.
FIG. 6 is a diagram simply showing a configuration example of the heater body 200a when the wood pellet combustion apparatus 1a is configured as a stove. As shown in FIG. 6, the secondary combustion chamber 210, the air passage 220, and the exhaust port 230 are provided. In this example, except for the exhaust port 230, it is a thimble, substantially rectangular parallelepiped casing.

The secondary combustion chamber 210 is a housing that provides a space for secondary combustion of the secondary combustion gas and the secondary combustion air introduced from the communication port 150 of the wood pellet primary combustion apparatus 100. That is, in the wood pellet primary combustion apparatus 100, the secondary combustion gas generated by the primary combustion of the wood pellet fuel M and the secondary combustion air taken in from the intake port for the secondary combustion air are secondary through the communication port 150. It is supplied into the combustion chamber 210.
The secondary combustion chamber 210 is a substantially rectangular parallelepiped housing in this example, and has an exhaust port 230 on the back side of the upper surface (the side opposite to the communication port 150).

The air passage 220 is an air passage that leads from the primary combustion chamber 110 to the secondary combustion chamber 210 of the heater body 200. In addition, it is preferable to devise a device including one or a plurality of rectifying plates 221 standing in the vertical direction in parallel with the flow of the secondary combustion air inside the air passage 220.
Compared to the structure in which the primary combustion chamber 110 and the secondary combustion chamber 210 are directly connected without the rectifying plate 221, if the air passage 220 is provided and the rectifying plate 221 is provided therein, the structure for the secondary combustion is provided. The flow of air and secondary combustion gas can be controlled, and the turbulent flow generated when the temporary combustion air descends from the upper side of the combustion cage 120 and collides with the bottom surface in the primary combustion chamber 110. The influence can be suppressed.

  The exhaust port 230 is an opening that communicates from the inside of the secondary combustion chamber 210 of the heater body 200 to the outside. Due to the so-called “chimney effect”, the secondary combustion gas and the secondary combustion air sent from the wood pellet primary combustion device through the communication port 150 can be efficiently drawn.

The attachment mechanism 270 is an attachment structure that is attached to a part of the outer wall of the wood pellet primary combustion apparatus 100 to the heater body 200.
The attachment structure for attaching both is not particularly limited. There can be various ways. There may be various types such as a fitting structure, a locking structure, a screwing structure, and a magnet attracting structure.
As described above with reference to FIG. 5, the attachment mechanism 160 provided on a part of the outer wall of the wood pellet primary combustion apparatus 100 and the attachment mechanism 270 provided on a part of the outer wall of the air passage 220 of the heater body 200. Are combined. Here, as shown in FIG. 5, there is an attachment mechanism 270 which is a locking piece standing vertically on a part of the outer wall of the air passage 220 of the heater body 200, and the attachment mechanism on the wood pellet primary combustion apparatus 100 side. Reference numeral 160 denotes a slit for receiving the locking piece of the mounting mechanism 270. The slit 160 is attached by locking the locking piece of the mounting mechanism 270 to the slit 161, and can be easily detached.

FIG. 7 is a diagram simply showing combustion, ventilation and the flow of the secondary combustion gas in the wood pellet combustion apparatus 1a.
As shown in FIG. 7, the primary combustion air drawn into the primary combustion chamber 110 from the primary combustion air intake 130 passes through the wood pellet fuel M inside from the upper part of the combustion car body 120 and is primary. The gas flows downward while causing the combustion, and the generated secondary combustion gas is generated. On the other hand, the secondary combustion air is also drawn into the primary combustion chamber 110 from the secondary combustion air intake port 140, and the secondary combustion air flows laterally in the lower part of the combustion car body 120, and the wood pellets It blows through toward the communication port 150 while mixing with the secondary combustion gas generated through the fuel M.
The secondary combustion air and the secondary combustion gas are introduced into the heater body 200a through the communication port 150.

When a stable air flow is completed as shown in FIG. 7, the supply of air is stabilized, and there is little problem that the wood pellet fuel M misfires due to lack of oxygen, and stable combustion of the wood pellet fuel M can be ensured.
The amount of combustion of the wood pellet fuel M can be adjusted by changing the angle of the flap body 141, so that the amount of air supplied from the intake port 140 for the secondary combustion air can be adjusted. Easy to adjust.

  As described above, the wood pellet combustor 1a according to the present invention can be easily assembled by attaching the wood pellet primary combustor 100 with excellent portability to the heater body 200a, such as a heating stove. As widely applicable. The heater main body 200a can be moved away from the heat source simply by removing the wood pellet primary combustion apparatus 100 from the heater main body 200a after the use is completed, and so-called fire extinguishing work is simplified.

As Example 2, the example of the wood pellet combustion apparatus 1b assembled as a stove cooker is shown. The wood pellet combustion apparatus 1b is obtained by attaching the wood pellet primary combustion apparatus 100 to a heater body 200b having a configuration suitable for a stove cooker.
FIG. 8 is a diagram simply showing a configuration example of the heater body 200b when the wood pellet combustion apparatus 1b is configured as a stove. In addition, description is abbreviate | omitted suitably about the component similar to the heater main body 200a of the structure suitable for the use as a stove.
As shown in FIG. 8, the wood pellet combustion apparatus 1b includes a secondary combustion chamber 210, an air passage 220, an exhaust port 230, and a stove table 240.

In this example, the secondary combustion chamber 210 has a substantially rectangular parallelepiped shape, and has an exhaust port 230 and an opening 211 having an upper surface opened on the stove table 240 on the upper surface.
The ventilation path 220 and the exhaust port 230 may be the same as those in the case of the heater body 200a, and description thereof is omitted here.

The stove table 240 is a stove table for placing a heating object to be heated using heat generated by secondary combustion in the secondary combustion chamber 210. FIG. 8A is a view from the top, and FIG. 8B is a view from the side. In order to easily understand the inside, a part is shown in cross section and the internal structure is illustrated. As shown in FIG. 8A, it can be seen that a stove table 240 is provided on the upper surface of the secondary combustion chamber 210.
In this example, the stove table 240 is a planar plate-like body, and the stove table 240 is provided with two rows of slits 241. By providing the two rows of slits 241, the secondary combustion heat is ejected from the secondary combustion chamber 210, and cooking can be performed like a stove having two rows of so-called heating sources.

FIG. 9 is a diagram simply showing the flow of combustion, ventilation, and secondary combustion gas in the wood pellet combustion apparatus 1b when used as a stove cooker.
As shown in FIG. 9, the primary combustion in the wood pellet primary combustion apparatus 100 is the same as that shown in FIG. 7, and a description thereof will be omitted here.
The secondary combustion air and the secondary combustion gas are introduced into the heater body 200b through the communication port 150. The secondary combustion air and the secondary combustion gas introduced into the heater body 200b generate secondary combustion to heat the heater body 200b as in FIG. 7, but when used as a stove cooker, As shown in FIG. 9, a part of heat is ejected upward from the slit 241. Therefore, heating as a stove for a cooking object placed on the stove table 240 is possible.

When a stable air flow is completed as shown in FIG. 9, the supply of air is stabilized, and there are few problems that the wood pellet fuel M is misfired due to lack of oxygen, and stable combustion of the wood pellet fuel M can be ensured.
The magnitude of the heating power of the stovetop can be easily adjusted by changing the angle of the flap body 141 on the wood pellet primary combustion apparatus 100 side.

As Example 3, an example of a wood pellet combustion apparatus 1c assembled as a grill cooker is shown. The wood pellet combustion apparatus 1c is obtained by attaching the wood pellet primary combustion apparatus 100 to a heater body 200c having a configuration suitable for the use of a grill cooker.
FIG. 10 is a diagram simply showing a configuration example of the heater body 200c when the wood pellet combustion apparatus 1c is configured as a stove. The left side of FIG. 10 is a perspective view, but a part is shown in cross-section so that the inside can be easily understood. The figure on the right side shows the secondary combustion chamber 210 taken out.
In addition, description is abbreviate | omitted suitably about the component similar to the heater main body 200a of the structure suitable for the use as a stove.

  As shown in FIG. 10, the heater body 200 c of the wood pellet combustion apparatus 1 c includes a secondary combustion chamber 210, an air passage 220, an exhaust port 230, a heat storage body 250 serving as a grill base, and a height adjustment mechanism 260. It has become.

  In this example, the secondary combustion chamber 210 is connected in a cylindrical shape with a U-shape and has an exhaust port 230 near the end. Thus, the heated gas generated by the secondary combustion and the secondary combustion flows so as to circulate above the heater body 200c, and is a grill stand attached from the secondary combustion chamber 210 to the inside of the heater body 200c. Heat is radiated toward the heat storage body 250.

  The air passage 220 is in the vicinity of the start end of the secondary combustion chamber 210 that circulates in a U-shape, and receives the secondary combustion gas and the air for secondary combustion from the communication port 150 of the wood pellet primary combustion apparatus 100. ing.

  The exhaust port 230 is a cylindrical opening provided near the end of the secondary combustion chamber 210 that circulates in a U-shape. By providing the exhaust port 230, a circulating airflow is formed in the secondary combustion chamber 210 that circulates in a U-shape due to the chimney effect.

The heat storage body 250 that is a grill base is a stage on which a heating object to be heated is placed in the secondary combustion chamber 210 using heat generated by secondary combustion. In the example of FIG. 10, it is provided at a position lower than the secondary combustion chamber 210, and the placed heating object is heated from below.
The heat storage body 250 has a function of emitting far infrared rays. For example, like pizza stone, heat is stored and far infrared rays are emitted as heat radiation. By providing the heat accumulator 250, it is easy for food to pass through the inside, which is suitable for cooking.

  The height adjustment mechanism 260 is a mechanism that adjusts the support height of the heat storage body 250. Although the structure of the height adjustment mechanism 260 is not limited, in this example, as shown in FIG. 11A, there is a support piece 261 that supports the heat storage body 250, and a groove is formed in a part of the inner wall of the secondary combustion chamber 210. As shown in FIG. 11 (b), four support pillars in which a number of 262 are arranged are provided, and a support piece 261 is selected by selecting a groove 262 having an appropriate height of the four support pillars. In addition, the heat storage body 250 is supported via the support piece 261 so as to be adjusted to an appropriate height.

FIG. 12 is a diagram simply showing the flow of combustion, ventilation, and secondary combustion gas in the wood pellet combustion apparatus 1c when used as a grill cooker.
As shown in FIG. 12, the primary combustion in the wood pellet primary combustion apparatus 100 is the same as that shown in FIG. 7, and a description thereof will be omitted here.

  The secondary combustion air and the secondary combustion gas are introduced into the heater body 200 c through the communication port 150. The secondary combustion air and the secondary combustion gas introduced into the heater main body 200c cause secondary combustion to heat the heater main body 200c. As shown in FIG. It circulates in the shape of a letter and radiates heat from above to below, while far-infrared rays are also radiated from the grill base provided below the bottom surface of the secondary combustion chamber 210 as a heat storage body. Used as a grill cooker that can be cooked from above and below by being heated by the heat from the upper secondary combustion chamber 210 and the radiant heat from the grill base which is the heat storage body below it can.

When a stable air flow is completed as shown in FIG. 12, the supply of air becomes stable, and there are few problems that the wood pellet fuel M misfires due to lack of oxygen, and stable combustion of the wood pellet fuel M can be ensured.
The magnitude of the heating power of the grill cooking table can be easily adjusted by changing the angle of the flap body 141 on the wood pellet primary combustion apparatus 100 side.

  It will be understood that various modifications can be made without departing from the scope of the invention. Therefore, the technical scope of the present invention is limited only by the description of the appended claims for utility model registration.

  The wood pellet combustion apparatus 100 of the present invention can be widely applied as an apparatus for burning wood pellet fuel, such as a stove, a stove cooker, and a grill cooker.

DESCRIPTION OF SYMBOLS 1 Wood pellet combustion apparatus 100 Wood pellet primary combustion apparatus 110 Primary combustion chamber 120 Combustion car body 130 Primary combustion air intake port 140 Secondary combustion air intake port 150 Communication port 160 Attachment mechanism 200 Heater body 210 Secondary combustion Chamber 220 Ventilation path 221 Rectifier 230 Exhaust port 250 Heat accumulator 260 Height adjustment mechanism 270 Mounting mechanism

Claims (10)

It is a wood pellet primary combustion device that burns wood pellet fuel that has been put inside to make a heat source, and is detachably attached to the heater body,
A primary combustion chamber attached in communication with a secondary combustion chamber in the heater body;
A communication port between the primary combustion chamber and the secondary combustion chamber;
In the primary combustion chamber, a combustion car body provided with a number of holes or slits for supporting the wood pellets and ensuring air permeability of the wood pellets;
In the primary combustion chamber, an intake port for primary combustion air that is provided at a position higher than the upper surface of the combustion car body and flows from the upper part to the lower part of the combustion car body;
For secondary combustion, which is provided at a position lower than a part of the support surface of the wood pellet fuel of the combustion car body and on a different side from the secondary combustion chamber, and flows so as to pass through the secondary combustion chamber. A wood pellet primary combustion apparatus comprising an air intake and detachably provided to various heater bodies. A flap body attached to the intake port for the secondary combustion air;
The angle of the flap body with respect to the intake port for the secondary combustion air is variable, and the flow rate of the intake port for the secondary combustion air can be controlled by changing the angle of the flap body. 1. A wood pellet primary combustion apparatus according to 1.   An attachment mechanism that is detachably attached to the heater body in a state where the secondary combustion chamber and the primary combustion chamber of the heater body are in communication with each other is provided on a part of the outer wall. Item 3. The primary combustion apparatus for wood pellets according to Item 1 or 2.   One or a plurality of rectifying plates standing upright in a direction parallel to and perpendicular to the flow of the secondary combustion air are provided between the combustion cage body and the communication port connected to the secondary combustion chamber. The wood pellet primary combustion apparatus according to any one of claims 1 to 3, wherein an influence of turbulent flow generated when air of primary combustion air descends from above to below in the body is suppressed.   The wood pellet combustion apparatus which combines the said wood pellet primary combustion apparatus in any one of Claim 1 to 4, and the said heater main body.   An exhaust port that communicates with the outside from the secondary combustion chamber of the heater body is provided, and is generated by the primary combustion of the wood pellets fed from the wood pellet primary combustion device through the communication port due to a chimney effect. The wood pellet combustion apparatus according to claim 5, wherein the secondary combustion gas and the secondary combustion air are efficiently drawn.   The said heater main body is a housing | casing, It is used as a stove which radiates heat to the circumference | surroundings with the heat | fever radiated | emitted from the said wood pellet primary combustion apparatus and the said heater main body. Wood pellet burning device.   A stovetop on which an object to be heated provided on the upper surface of the secondary combustion chamber can be placed; and a hole or slit is provided in the stovetop to facilitate passage of heat from the lower secondary combustion chamber; The wood pellet combustion apparatus according to claim 5 or 6, wherein the wood pellet combustion apparatus is used as a stove cooker capable of cooking by heating.   A grill base provided below the bottom surface of the secondary combustion chamber, the grill base being a heat storage body that emits far-infrared rays, and a heat storage body below the heat from the secondary combustion chamber above The wood pellet combustion apparatus according to claim 5 or 6, wherein the wood pellet combustion apparatus is used as a grill cooker capable of cooking from above and below by radiant heat from the grill table.   The wood pellet combustion apparatus according to claim 9, further comprising a height adjusting mechanism that makes the height of the grill table variable.

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