WO2022211579A1

WO2022211579A1 - Pellet stove for use with pellets or firewood

Info

Publication number: WO2022211579A1
Application number: PCT/KR2022/004720
Authority: WO
Inventors: 안동호; 민선태
Original assignee: 주식회사 그린에너지솔루션
Priority date: 2021-04-02
Filing date: 2022-04-01
Publication date: 2022-10-06

Abstract

A pellet stove according to an aspect of the present invention comprises an outer container for forming a double protective wall and an inner container that is inserted into the outer container and accommodates pellets so that the pellets can be combusted. The outer container includes: a first lower surface including an opening formed near the center; an outer cylindrical portion formed to a height of a first length; a blower fan which is attached to the lower end of the opening and is for blowing external air into the outer container; a control unit for controlling the blower fan; and a first catching protrusion that bends and extends a predetermined length inward from the upper end of the outer cylindrical portion. The inner container includes: an inner cylindrical portion formed to a height of a second length; and a second catching protrusion that bends and extends outward a predetermined length from the upper end of the inner cylindrical portion.

Description

Pellet stove for use with pellets or firewood

The present invention relates to a pellet furnace.

In general, braziers were used to grill food or to warm the surroundings. However, recently, the so-called fire-myeong brazier, which stares blankly at the burning fire for the purpose of healing the mind and body, at a campsite or at home is gaining popularity.

However, it is common to use firewood for the existing brazier for fire pits, and for this purpose, it is common to have a structure that is easy to burn wood, such as wood.

However, in the case of firewood, there were cases where the combustion did not work well in a general brazier, and fuel, ie, firewood, had to be filled in the brazier little by little, so there was the inconvenience of having to frequently refill the firewood. In addition, a lot of soot occurs due to unstable combustion during combustion of pellets, etc. Accordingly, there was also a problem in that the effect of the bulmeong was reduced.

An object of the present invention is to provide a brazier for cooking and fire that does not require separate material filling for a long time by filling the pellets all at once and burning them from above.

In addition, an object of the present invention is to provide a pellet furnace with a passage through which external ventilation can be introduced into the inside through the fan.

In addition, the present invention is provided with a rechargeable battery power device so that pellets and other fuels can be easily used outdoors without incomplete combustion, and to provide a pellet furnace that can control the amount of combustion according to the user's intention through a dial. .

Pellet furnace according to an aspect of the present invention, the outer barrel for forming a double protective wall; and an inner tube that is inserted into the outer tube to contain pellets so that the pellets can be burned, wherein the outer tube includes: a first lower surface including an opening formed near the center; an outer cylindrical portion formed with a height of a first length; a handle attached to the outside of the outer cylindrical part; one or more external ventilation holes formed around the lower end of the side portion of the outer cylindrical portion; a ventilation fan attached to the lower end of the opening to blow outside air into the outer cylinder; a control unit for controlling the ventilation fan; and a first engaging jaw portion formed by being bent and extending in an inward direction from the upper end of the outer cylindrical portion, wherein the inner cylindrical portion includes: an inner cylindrical portion formed to have a height of a second length; a second locking jaw portion which is bent to a predetermined length from the upper end of the inner cylindrical portion to extend outwardly and can be placed on the first locking jaw; a second bottom surface formed with one or more bottom-layer ventilation holes formed in the vicinity of the center; The second lower surface is formed parallel to the second lower surface by falling to a third length below the second lower surface, and the ash and flame discharged through the second lower surface fall to the bottom, so that the ventilation fan is melted by heat or the operation is stopped one or more bottom bearing surfaces to prevent a connection part for connecting the second lower surface and the lower support surface; an upper ventilation hole in which a plurality of air holes are formed in a plurality of rows at an upper end of the inner cylindrical part; and one or more lower ventilation holes formed around the lower end of the inner cylindrical part.

The pellet furnace according to the present invention has the effect of not having to fill the pellets all at once and burn the pellets from above for a long time without the need for separate material filling.

In addition, the pellet furnace according to the present invention has an effect that can burn fuel from above by forming a passage through which external air can be introduced into the inside through a fan.

In addition, the pellet furnace according to the present invention is provided with a rechargeable battery power device so that it can be easily used outdoors, and the amount of combustion can be freely adjusted through a dial.

In addition, the present invention has the effect of blocking the conduction of heat and the radiation transmission of heat through the separate combustion tank and the insulating material provided between them, and accordingly, the heat generated from above damages the electronic parts or plastics at the bottom. can be prevented

In addition, the present invention has the advantage that the lower passage, the outer tube and the inner tube are separated, and the inner tube can be separated and combined with a perforated plate separately, so cleaning and management are convenient.

In addition, the present invention has the advantage of having a continuous combustion time that can be burned for a long time, as well as the advantage of almost no ash or soot due to complete combustion.

1 schematically shows the overall configuration of a pellet stove according to an embodiment of the present invention.

Figure 2 schematically shows the combustion state of the pellet furnace according to an embodiment of the present invention.

Figure 3 schematically shows the overall configuration of a pellet furnace according to another embodiment of the present invention.

Figure 4 is a view from the top of the lower barrel of the pellet furnace according to another embodiment of the present invention.

Figure 5 shows a state in which the pellet furnace according to another embodiment of the present invention is separated.

In one embodiment, the sum of the second length of the inner cylindrical portion and the third length between the second lower end surface and the lower end receiving surface is shorter than the first length of the outer cylindrical portion by a predetermined length or more, the second length of the inner cylindrical portion 2 When the engaging jaw portion is caught by the first engaging jaw portion of the outer cylinder and the inner cylinder is inserted into the outer cylinder and spanned, the lower end support surface is disposed at a position higher than the predetermined length from the first lower surface .

In one embodiment, the diameter of the inner cylindrical portion is smaller than the diameter of the outer cylindrical portion by more than an extension length of the first locking jaw, and external air is introduced into the outer cylinder through the ventilation fan, so that the inner cylindrical portion and the outer By using the gap between the cylindrical parts as an air passage, it may be introduced into the inner cylindrical part through the upper ventilation hole, the lower ventilation hole, and the bottom ventilation hole of the second lower surface.

In an embodiment, the control unit includes a rechargeable battery unit capable of applying power to the ventilation fan and a dial unit for controlling a rotation speed of the ventilation fan.

In one embodiment, the control unit further includes a power cord capable of applying an external power to the ventilation fan.

According to another feature of the present invention, the pellet stove using at least one of pellets, firewood, charcoal and charcoal as fuel, includes: an outer barrel for forming a double protective wall; an inner cylinder that is inserted into the outer cylinder to hold the pellets so that the pellets can be burned; and a lower cylinder for supporting the outer cylinder and the inner cylinder while placing them on top, and injecting air into the outer cylinder and the inner cylinder through a ventilation fan, wherein the outer cylinder is formed in the vicinity of the center a first bottom surface including an opening; an outer cylindrical portion formed with a height of a first length; and a first engaging jaw portion formed by being bent and extending in an inward direction from the upper end of the outer cylindrical portion, wherein the inner cylindrical portion includes: an inner cylindrical portion formed with a height of a second length shorter than the first length; a second locking jaw portion which is bent to a predetermined length from the upper end of the inner cylindrical portion to extend outwardly and can be placed on the first locking jaw; a second lower surface connected to the lower end of the inner cylindrical portion and formed in a circular shape to prevent ash and flame from falling into the lower portion of the cylindrical portion; a perforated plate bottom holder protruding upward from the center of the second lower surface; a perforated plate side holder protruding inward from the inner surface of the inner cylindrical part at a predetermined height from the second lower surface; Through the perforated plate bottom holder and the perforated plate side holder, it is fixedly mounted on the second lower surface of the inner cylinder at a predetermined height in a direction parallel to the second lower surface, and a plurality of perforated holes are formed thereon for combustion perforated plate for loading fuel; an upper ventilation hole in which a plurality of air holes are formed in a plurality of rows at an upper end of the inner cylindrical part; and one or more lower ventilation holes formed under the mounting position of the perforated plate around the lower end of the inner cylindrical part. Including, the lower cylinder portion; a lower case forming a bottom and an outer cylindrical outer wall of the lower cylindrical part; A plurality of areas formed in a central portion of the upper open surface of the lower case and extending in the horizontal direction at predetermined intervals from the lower case end and the lower case inner surface in the remaining area except for the outlet for discharging air to the upper part a first heat sink of It is disposed below a predetermined height under the plurality of first heat sinks and is formed in an area wider than the size of the discharge holes so that the center coincides with the center of the discharge holes and is parallel to the first heat sink so that the discharge holes can be covered when viewed from the top. a second heat sink disposed to an intermediate support for fixing the second heat sink to the first heat sink to fix the second heat sink inside the lower cylinder; a support insulating material disposed along the upper end edge of the lower case to block conduction of heat generated in the outer tube to the lower tube when the outer tube is mounted on the lower tube; a heat sink insulator disposed under a second heat sink of at least a portion of the second heat sink to block the heat introduced through the opening of the outer cylinder and the outlet of the lower cylinder; One or more external ventilation holes formed around the lower end of the side portion of the lower case; a ventilation fan disposed in the inner region of the lower case at a position higher than the external ventilation hole to blow external air into the opening of the outer tube through the outlet of the lower tube; a control unit for controlling on/off and speed of the ventilation fan; and a battery unit for providing power to the ventilation fan and the control unit.

Preferably, the first lower surface of the outer cylinder includes a fixing groove that can be fixed over to correspond to the upper edge of the lower case of the lower cylinder, and the opening of the outer cylinder is wider than the outlet of the lower cylinder. is formed with

Preferably, the diameter of the inner cylindrical part is smaller than the diameter of the outer cylindrical part by more than an extension length of the first locking jaw, so that external air flows inward through the external cylindrical part opening through the ventilation fan, and the inner cylindrical part and the By using a gap between the outer cylindrical parts as an air passage, it may be introduced into the inner cylindrical part through the upper ventilation hole and the lower ventilation hole.

Hereinafter, specific embodiments for carrying out the present invention will be described with reference to the accompanying drawings.

In describing the present invention, terms such as first, second, etc. may be used to describe various components, but the components may not be limited by the terms. The terms are only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

When a component is referred to as being connected or connected to another component, it may be directly connected or connected to the other component, but it can be understood that other components may exist in between. .

The terms used herein are used only to describe specific embodiments, and are not intended to limit the present invention. An expression in the singular may include more than one expression unless the context clearly dictates otherwise.

In this specification, the terms include or include are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and includes one or more other features or numbers, It may be understood that the possibility of the presence or addition of steps, operations, components, parts, or combinations thereof is not precluded in advance.

In addition, shapes and sizes of elements in the drawings may be exaggerated for clearer description.

제1 실시예first embodiment

Referring to FIG. 1 , the pellet stove 100 according to the present invention includes an outer cylinder 200 and an inner cylinder 300 . The outer cylinder 200 functions to form a double protective wall of the pellet furnace stand 100 , and the inner cylinder 300 is inserted into the outer cylinder 200 to contain the pellets so that the pellets can be burned. There are air inlet holes in the upper, middle, lower, and bottom layers so that air is introduced from the external to the internal tunnel and the pellet fuel can be burned.

The outer cylinder 200 includes a first lower surface 202 , an outer cylindrical portion 203 , a handle 204 , an external ventilation hole 205 , a ventilation fan 206 , a control unit 207 , and a first engaging jaw portion 208 . ) is included.

The first bottom surface 202 forms the bottom surface of the outer cylinder portion 202 including an opening 201 near the center thereof. The outer cylindrical portion 203 is an outer wall formed with a height of the first length, through which the outer cylindrical portion 202 can form the outer shell of the cylindrical brazier. The handle 204 is formed around the lower end of the side of the outer cylindrical portion 203 to provide a function to hold and move the pellet furnace 100 or the outer cylindrical portion 202 . Meanwhile. This handle 204 may be manufactured by removing it if necessary.

In addition, the external ventilation hole 205 is formed around the lower end of the side part on the outside of the outer cylindrical portion 203 and is one or more ventilation holes, and may be formed in a line or a plurality of rows along the periphery of the outer cylindrical portion 203 . have. The ventilation fan 206 is a fan attached to the lower end of the opening 201 and functions to blow external air into the outer cylinder 202 . The control unit 207 functions to control the ventilation fan 206 , and may indicate an on/off function of the ventilation fan 206 or speed adjustment of the ventilation fan 206 , and an operating state of the ventilation fan 206 . It may include a display unit and the like.

Meanwhile, the control unit 207 may further include a battery unit capable of applying power to the ventilation fan 206 . In addition, the battery unit may be a rechargeable battery, or a method of inserting and using a disposable battery may be used. Also, the control unit 207 may include a dial unit for adjusting the rotation speed of the ventilation fan 206 . Through such a dial part (not shown), it is possible to easily control the amount of combustion of the pellets, the combustion speed, the height of the flame, the ambient temperature, and the like. In addition, the control unit 207 may include a power cord capable of applying an external power to the ventilation fan 206 , and may be operated with an external power source.

The first locking jaw portion 208 is formed to extend from the upper end of the outer cylindrical portion 203 by bending it in an inward direction. The first locking jaw portion 208 provides a function of allowing the inner tube 300 to be draped over the top when the inner tube 300 is inserted into the outer tube 200 .

The inner cylinder 300 includes an inner cylindrical portion 301 , a second engaging jaw portion 302 , a bottom ventilation hole 303 , a second lower surface 304 , a lower support surface 305 , a connection portion 306 , and upper ventilation. a hole 307 , and a lower ventilation hole 308 .

The inner cylindrical portion 301 is formed to a height of the second length, and is an element constituting a cylindrical side surface. In addition, the second locking jaw portion 302 is formed to extend from the upper end of the inner cylindrical portion 301 by bending it to a predetermined length in the outward direction. The second engaging jaw portion 302 is seated on the upper end of the first engaging jaw portion 208 as shown in FIG. It should be raised above the height so that it can be mounted.

The second bottom surface 304 is a bottom surface on which one or more bottom-layer ventilation holes formed near the center are formed. The support surface 305 is formed parallel to the second lower surface 304 by a third length from below the second lower surface 304, and the ashes and flames discharged through the second lower surface 304 are It falls to the bottom and performs a function to prevent the ventilation fan from being melted or stopped by heat. The connection part 306 serves to connect the second bottom surface 304 and the lower support surface 305, and as shown in FIG. It is manufactured to be coupled to one region and one region of the edge of the second lower surface 304, respectively.

A plurality of air holes are formed in a plurality of rows at the upper end of the inner cylindrical portion of the ventilation hole 307 . The lower ventilation hole 308 is formed around the lower end of the inner cylindrical portion.

On the other hand, the sum of the second length of the inner cylindrical portion 301 and the third length between the second lower surface 304 and the lower end receiving surface 305 is shorter than the first length of the outer cylindrical portion 203 by a predetermined length or more. , The second engaging jaw portion 302 of the inner cylinder 300 is caught on the first engaging jaw portion 208 of the outer cylinder 200, and the inner cylinder 300 is inserted into the outer cylinder 200. When being put on, the lower end support surface 305 is disposed at a position higher than the predetermined length from the first lower end surface 202 .

In addition, the diameter of the inner cylindrical portion 301 is smaller than that of the outer cylindrical portion 203 by more than the extension length of the first locking jaw 208, so that external air flows through the ventilation fan 206 into the outer cylindrical portion ( 200) The upper ventilation hole 307, the lower ventilation hole 308, and the second It allows it to flow into the inner cylinder part 300 through the bottom ventilation hole 303 of the lower end surface 304 .

Referring to FIG. 2 , even when the pellets are filled up to the upper end of the inner cylinder 300 , external air enters the gap between the inner cylinder 300 and the outer cylinder 200 through the ventilation fan 203 and the inner cylinder 300 ) can be supplied as pellets through a number of holes formed in the top and bottom and bottom surfaces, so that they can be sequentially burned from the top of the pellet pile.

제2 실시예second embodiment

Figure 3 schematically shows the overall configuration of a pellet furnace according to another embodiment of the present invention. Figure 4 is a view from the top of the lower barrel of the pellet furnace according to another embodiment of the present invention. Figure 5 shows a state in which the pellet furnace according to another embodiment of the present invention is separated.

Looking at the pellet furnace 400 according to another embodiment of the present invention with reference to FIGS. 3 to 5, the pellet furnace 400 using at least one of pellets, firewood, charcoal and charcoal as a fuel is an external cylinder ( 500), it is composed of an inner cylinder portion 600 and a lower cylinder portion (700). The outer cylinder 500 forms a double protective wall, and the inner cylinder 600 is inserted at a predetermined distance from the inner cylinder 600 to form an air flow passage between the outer cylinder 500 and the inner cylinder 600 . It is an outer case with a cylindrical shape to make it possible. The inner cylinder 600 is inserted into the outer cylinder 500, is placed on the outer cylinder 500, and performs a function of containing the pellets so that the pellets can be burned therein. The lower cylinder part 700 supports the outer cylinder part 500 and the inner cylinder part 600 while putting them on the upper part, and blows air through the ventilation fan 707 to the external cylinder part 500 and the inner cylinder part 600. It performs the function to inject into

Referring to FIG. 3 , the outer cylindrical portion 500 includes a first lower end surface 502 , an outer cylindrical portion 503 , and a first engaging jaw portion 504 .

The first bottom surface 502 forms the bottom surface of the outer cylinder part 500 and includes an opening 501 formed in the vicinity of the center so that air can be introduced therein. The outer cylindrical portion 503 is formed in a cylindrical shape with a height of a first length and forms an outer outer portion. The first locking jaw portion 504 is bent to a predetermined length in the inner direction from the upper end of the outer cylindrical portion 503 to form a locking jaw.

The inner cylindrical portion 600 includes an inner cylindrical portion 601 , a first engaging jaw portion 602 , a second lower surface, a perforated plate bottom holder 603 , a perforated plate side holder 604 , and a perforated plate 605 .

The inner cylindrical portion 601 constitutes a cylindrical body formed with a second length shorter than the first length of the outer cylindrical portion 503 . The second locking jaw portion 602 is formed to extend from the upper end of the inner cylindrical portion 601 by being bent to a predetermined length in the outward direction. The second locking jaw portion 602 is overlaid on the first locking jaw portion 504 and functions to allow the inner cylinder 600 to be inserted into the outer cylinder 500 and put on it.

The second lower surface is connected to the lower end of the inner cylindrical portion 601 and is formed in a circular shape, and functions to prevent ash and flame from falling downward. The perforated plate bottom holder 603 is formed to protrude upward from the center of the second lower surface and functions to support the perforated plate 605 in the center, and the perforated plate side holder 604 is at a predetermined height from the second lower surface. It is formed to protrude inward from the inner surface of the inner cylindrical portion 601 , and serves to support the perforated plate 605 at the edge. The perforated plate 605 is fixed in a direction parallel to the second lower surface at a predetermined height above the second lower surface of the inner cylinder 600 through the perforated plate bottom holder 603 and the perforated plate side holder 604 . It is mounted, and a plurality of perforated holes 606 are formed to function to load fuel for combustion thereon. The perforated hole 606 performs an air passage function through which the air introduced through the lower ventilation hole 608 can be introduced into the fuel such as pellets above the perforated plate 605 .

Meanwhile, referring to FIG. 3 , an upper ventilation hole 607 and a lower ventilation hole 608 are formed on the side surface of the inner cylindrical portion 601 . In the upper ventilation hole 607 , a plurality of air holes are formed in a plurality of rows at the upper end of the inner cylindrical portion 601 . And the lower ventilation hole 608 is formed below the mounting position of the perforated plate 605 around the lower end of the inner cylindrical portion 601, it may be formed in one row or a plurality of rows. The upper ventilation hole 607 and the lower ventilation hole 608 are the inner cylinder after the air introduced through the opening 501 of the outer cylinder part 500 enters between the outer cylindrical part 503 and the inner cylindrical part 601 . The part 601 functions as an air passage hole to be introduced into the interior.

On the other hand, the lower cylinder part 700, the lower case 701, the first heat sink 702A, the second side plate 702B, the middle support 710, the support heat insulating material 704, the heat sink heat insulating material 705, external ventilation a hole 706 , a ventilation fan 707 , a control unit 708 , and a battery unit 709 .

Referring to FIG. 3 , the lower case 701 has a bottom and an outer cylindrical outer wall of the lower cylindrical portion 700 , and a plurality of first heat sinks 702A are located at the center of the upper open surface of the lower case 701 . A plurality of areas except for the discharge ports 703 for discharging air to the upper portion are formed in some areas and extend in the horizontal direction at predetermined intervals from the lower case end and the lower case inner surface. The plurality of second heat sinks 702B are disposed below a predetermined height under the plurality of first heat sinks 702A and have a larger area than the size of the discharge port 703 . Referring to FIG. 4 , the second heat sink 702B has a center that coincides with the center of the outlet 703 so that the outlet 703 can be provided when viewed from the top and is parallel to the first heat sink 702A. is laid out

In the first heat sink 702A and the second heat sink 702B, when viewed from the side as in FIG. 3 , the air flow is not directly connected up and down, but flows in a zigzag manner, and the heat from the upper side is the electronic component or motor at the bottom. , it functions to block the transmission to the motor fan. That is, the air flows upward through the ventilation fan 707 in a zigzag manner and flows upward through the outlet 703 , and functions to prevent direct transfer of hot heat to the lower portion. That is, these heat sinks block the radiant heat pouring from above and function to block the heat by returning the air flow several times.

The intermediate support 710 fixes the second heat sink 702B to the first heat sink 702A, thereby fixing the second heat sink 702B inside the lower cylinder part 700 . The support insulator 704 is disposed along the upper end edge of the lower case 701 to prevent the heat generated in the outer cylinder 500 when the outer cylinder 500 is mounted on the lower cylinder 700. It functions to block conduction to the lower cylinder part 700 . In addition, the support insulating material 704 also performs a function of preventing air from leaking to the outside by increasing the vacuum degree of the joint. The heat sink insulator 705 is disposed under the second heat sink 702B of at least a portion of the second heat sink 702B, and the opening 501 of the outer cylinder 500 and the discharge port 703 of the lower cylinder 700 are ) fundamentally blocks heat from being radiated. The heat sink insulator 705 attached to the heat sink blocks the initial radiation heat, suppresses the heat in the initial stage, and maintains the temperature of the lower cylinder at 50 degrees or less, and significantly helps the fatigue of the second heat sink 702B.

Referring back to FIG. 3 , a plurality of external ventilation holes 706 are formed around the lower end of the side portion of the lower case 701 . The external ventilation holes 706 may be formed in a row or in multiple rows. The ventilation fan 707 is disposed in the inner region of the lower case 701 at a position higher than the external ventilation hole 706 and blows outside air through the outlet 703 of the lower tube portion 700 to the outer cylinder 500 ) functions to blow into the opening 501 . In addition, the control unit 708 functions to control the on/off and speed of the ventilation fan 707, and is preferably configured in a dial type to easily control the speed of the fan. In addition, the battery unit 709 functions to provide power to the ventilation fan 707 and the control unit 708 , and may be configured to use a rechargeable battery or a disposable battery.

In addition, the first lower surface 502 of the outer cylinder part 500 may include a fixing groove (not shown) that can be fixed over to correspond to the upper edge of the lower case of the lower cylinder part 700 . In addition, it is preferable that the opening 501 of the outer cylinder 500 is wider than the outlet 703 of the lower cylinder 700 .

In addition, as shown in FIGS. 3 and 5 , the diameter of the inner cylindrical part 601 is smaller than that of the outer cylindrical part 503 by more than the extension length of the first locking protrusion 504 , the ventilation fan 707 . ), external air flows in through the outer cylinder opening 501 and uses the gap between the inner cylindrical portion 601 and the outer cylindrical portion 503 as an air passage, and the upper ventilation hole ( 607), it is preferable to be introduced into the inner cylinder 600 through the lower ventilation hole 608.

In this way, the pellet furnace according to the present invention has the effect of not having to fill the pellets at once and burn the pellets from above, so that there is no need for a separate material filling for a long time.

In addition, the pellet furnace according to the present invention is formed with a passage through which external ventilation can be introduced into the inside through a fan, so that combustion can be performed from above the pellets.

In addition, the pellet furnace according to the present invention is provided with a battery-charged power supply so that it can be easily used outdoors, and can control the amount of combustion through a dial.

It should be noted that the above-described embodiment is for illustrative purposes only, and not for its limitation. In addition, those skilled in the art will understand that various embodiments are possible within the scope of the technical idea of the present invention.

The present invention can be used as a brazier at a camping site or the like.

Claims

In the pellet stove using at least one of pellets, firewood, charcoal and charcoal as a fuel,

an outer tube for forming a double protective wall; and

Including; and an inner cylinder that is inserted into the outer cylinder to contain the pellets so that the pellets can be burned.

The outer tube,

a first bottom surface including an opening formed near the center;

an outer cylindrical portion formed with a height of a first length;

one or more external ventilation holes formed around the lower end of the side portion of the outer cylindrical portion;

a ventilation fan attached to the lower end of the opening to blow outside air into the outer cylinder;

a control unit for controlling the ventilation fan; and

a first locking jaw formed by being bent to a predetermined length in an inward direction from the upper end of the outer cylindrical part;

including,

The inner tube,

an inner cylindrical portion formed to a height of a second length;

a second locking jaw portion which is bent to a predetermined length from the upper end of the inner cylindrical portion to extend outwardly and can be mounted on the first locking jaw portion;

a second bottom surface formed with one or more bottom-layer ventilation holes formed in the vicinity of the center;

It is formed parallel to the second lower surface by falling by a third length from below the second lower surface, and the ash and flame discharged through the second lower surface fall to the bottom so that the ventilation fan is melted by heat or the operation is stopped one or more lower support surfaces to prevent

a connection part for connecting the second lower surface and the lower support surface;

an upper ventilation hole in which a plurality of air holes are formed in a plurality of rows at an upper end of the inner cylindrical part; and

one or more lower ventilation holes formed around the lower end of the inner cylindrical portion;

A pellet furnace comprising a.
The method of claim 1,

The sum of the second length of the inner cylindrical portion and the third length between the second lower end surface and the lower end support surface is shorter than the first length of the outer cylindrical portion by a predetermined length or more, and the second protrusion of the inner cylindrical portion is the Pellets, characterized in that when the inner cylinder is inserted into the outer cylinder and spanned by being caught in the first engaging jaw portion of the outer cylinder, the lower end support surface is disposed at a position higher than the predetermined length from the first lower surface. brazier.
The method of claim 1,

The diameter of the inner cylinder is smaller than the diameter of the outer cylinder by more than an extension length of the first locking jaw, and external air is introduced into the outer cylinder through the ventilation fan, so that the gap between the inner cylinder and the outer cylinder Pellet furnace, characterized in that it can be introduced into the inner cylinder through the upper ventilation hole, the lower ventilation hole and the bottom layer ventilation hole of the second lower surface using the as an air passage.
The method of claim 1,

The control unit may include a rechargeable battery unit capable of applying power to the ventilation fan; and a dial unit for controlling the rotation speed of the ventilation fan.
The method of claim 1,

The control unit pellet brazier, characterized in that it further comprises a power cord capable of applying an external power to the ventilation fan.
In the pellet stove using at least one of pellets, firewood, charcoal and charcoal as a fuel,

an outer tube for forming a double protective wall;

an inner cylinder that is inserted into the outer cylinder to hold the pellets so that the pellets can be burned; and

and a lower cylinder for supporting the outer cylinder and the inner cylinder while placing them on top, and injecting air into the outer cylinder and the inner cylinder through a ventilation fan; and

The outer tube,

a first bottom surface including an opening formed near the center;

an outer cylindrical portion formed with a height of a first length; and

a first locking jaw formed by being bent to a predetermined length in an inward direction from the upper end of the outer cylindrical part;

including,

The inner tube,

an inner cylindrical portion formed with a second length shorter than the first length;

a second locking jaw portion which is bent to a predetermined length from the upper end of the inner cylindrical portion to extend outwardly and can be placed on the first locking jaw;

a second lower surface connected to the lower end of the inner cylindrical portion and formed in a circular shape to prevent ash and flame from falling into the lower portion of the cylindrical portion;

a perforated plate bottom holder protruding upward from the center of the second lower surface;

a perforated plate side holder protruding inward from the inner surface of the inner cylindrical part at a predetermined height from the second lower surface;

Through the perforated plate bottom holder and the perforated plate side holder, it is fixedly mounted on the second lower surface of the inner cylinder at a predetermined height in a direction parallel to the second lower surface, and a plurality of perforated holes are formed thereon for combustion perforated plate for loading fuel;

an upper ventilation hole in which a plurality of air holes are formed in a plurality of rows at an upper end of the inner cylindrical part; and

one or more lower ventilation holes formed below the mounting position of the perforated plate around the lower end of the inner cylindrical part;

including,

the lower cylinder;

a lower case forming a bottom and an outer cylindrical outer wall of the lower cylindrical part;

A plurality of areas formed in a central portion of the upper open surface of the lower case and extending in the horizontal direction at predetermined intervals from the lower case end and the lower case inner surface in the remaining area except for the outlet for discharging air to the upper part a first heat sink of

It is disposed below a predetermined height under the plurality of first heat sinks and is formed in an area wider than the size of the discharge holes so that the center coincides with the center of the discharge holes and is parallel to the first heat sink so that the discharge holes can be covered when viewed from the top. a second heat sink disposed to

an intermediate support for fixing the second heat sink to the first heat sink to fix the second heat sink inside the lower cylinder;

a support insulating material disposed along the upper end edge of the lower case to block conduction of heat generated in the outer tube to the lower tube when the outer tube is mounted on the lower tube;

a heat sink insulator disposed under a second heat sink of at least a portion of the second heat sink to block the heat introduced through the opening of the outer cylinder and the outlet of the lower cylinder;

one or more external ventilation holes formed around the lower end of the side portion of the lower case;

a ventilation fan disposed in the inner region of the lower case at a position higher than the external ventilation hole to blow external air into the opening of the outer tube through the outlet of the lower tube;

a control unit for controlling on/off and speed of the ventilation fan; and

Pellet brazier, characterized in that it comprises a battery unit for providing power to the ventilation fan and the control unit.
7. The method of claim 6,

The first lower surface of the outer cylinder includes a fixing groove that can be fixed over to correspond to the upper edge of the lower case of the lower cylinder,

Pellet furnace stand, characterized in that the open portion of the outer cylinder is formed in a larger size than the discharge port of the lower cylinder.
7. The method of claim 6,

The diameter of the inner cylindrical portion is smaller than the diameter of the outer cylindrical portion by more than the extension length of the first locking jaw, so that external air is introduced through the opening of the outer cylinder through the ventilation fan to the inner cylinder and the outer cylinder. Using the gap between them as an air passage, the pellet furnace, characterized in that it can be introduced into the inner cylinder through the upper ventilation hole and the lower ventilation hole.