KR102184783B1 - Stove for both wood and pellet - Google Patents

Abstract

The present invention provides a pellet heater usable as a wood heater, which can reduce soot and emission gas. The pellet heater usable as a wood heater comprises: a burner for combustion; a stove body installed on one side of the burner for the purpose of indoor installation or a patio heater installed on one side of the burner for the purpose of outdoor installation; and a pellet hopper installed on the other side of the burner. The burner includes: a burner body; a pellet receiver installed in an upper portion of the burner body to collect pellets for fuel supplied from the pellet hopper to supply the pellets for fuel into the body; a primary combustion unit in which primary combustion of the pellets for fuel takes place; a secondary combustion unit in which secondary combustion of the pellets for fuel takes place; and a heat rising unit connected to the burner body to move wood gas and hot heated air created by the primary combustion unit (130) toward the stove body in a laterally upward direction. The primary combustion unit is installed in the burner body, and the secondary combustion unit is installed in a lower portion of the burner body.

Description

Pellet stove for both firewood {STOVE FOR BOTH WOOD AND PELLET}

The present invention relates to a combined firewood pellet stove, and more particularly, to a combined firewood pellet stove applicable to indoor and outdoor installation purposes.

In general, a stove refers to a device that heats by using combustion heat generated when fuel is burned, and can be used not only indoors such as a home, an office, a plastic house of a farm, but also outdoors such as a terrace or construction site.

The use of such stoves has decreased as various heating means using various energy sources such as electric heaters have been developed, but they are still preferred in areas where fuel is readily available, such as houses or buildings in the suburbs. In particular, in recent years, as the price of fossil fuels has been greatly increased, the cost of heating has increased, such as an increase in the economic burden, but there is a tendency to increase the demand for stoves using solid fuels that are inexpensive and have relatively good thermal power. . In particular, in rural areas, heating of vinyl houses, etc. is mainly used by using a solid fuel stove, and gas stoves and oil stoves are being replaced with solid fuel stoves in golf courses, factories, and construction sites. In addition, when an electric heater or electric boiler is used due to the increase of the electricity bill and the application of the progressive tax, considerable electricity costs are incurred, whereas the pellet stove not only requires a low fuel cost, but also the fuel cost can be predicted. I can.

Among solid fuels, wood pellets are eco-friendly fuels fueled by using wood by-products, and in recent years, they are emerging as a fuel source that can replace fossil fuels, and stoves using wood pellets as fuel are continuously being developed.

Korean Patent Registration No. 10-1305400 proposes a pellet stove, and according to the preceding document, a supply hole is formed at the base end of the conveying pipe body that transports pellet fuel, and air is supplied to the base end of the conveying pipe through the supply hole. This prevents the phenomenon of backfire by accumulating pellet powder inside the transfer pipe.

However, in the case of the pellet stove shown in FIG. 1, as a structure of a downward combustion method, it is a method that mainly supplies air to the pellets as fuel, generates heat with a flame, and then immediately exhausts it through the communication. In this case, high-temperature combustion gas is immediately discharged Therefore, there is a problem in that the heat of combustion cannot be sufficiently utilized for heating and is wasted, resulting in poor thermal efficiency.

In addition, this type of "U" type supply/exhaust structure can cause an exhaust reversal phenomenon through the fuel inlet, and incomplete combustion occurs inside the stove because sufficient contact between fuel and air is not made, thereby reducing combustion efficiency. As the unburned gas is discharged, soot and discharged smoke are excessively generated.

The present invention was developed to solve the problems of the prior art described above, and after burning firewood or pellets, it is possible to sufficiently utilize the high-temperature combustion heat for heating and minimize the discharge of unburned gas to reduce the generation of soot and exhaust smoke. Its purpose is to provide a pellet stove for both firewood and wood.

According to one aspect of the present invention for achieving the above object, a combustion burner, a stove main body installed on one side of the burner for indoor installation use, or a patio heater installed on one side of the burner for outdoor installation, and the A firewood combined pellet stove comprising a pellet hopper installed on the other side of the burner, wherein the burner collects the burner body and the pellets for fuel supplied from the pellet hopper and supplies the pellets to the inside of the burner body. A receiver, a primary combustion section in which the fuel pellets are first burned, a secondary combustion section in which the fuel pellets are secondary burned, and the high-temperature heated air generated in the primary combustion section are used in the wood gas stove. Firewood combined pellets, characterized in that it comprises a heat rising portion connected to the burner body to move upwardly toward the body, the primary combustion unit is installed inside the burner body, and the secondary combustion unit is installed under the burner body A stove is provided.

In the present invention, the heat rising part is a cylindrical column, and a connection member connecting the inside of the stove main body and the inside of the cylindrical column is built-in, and the first combustion part and the second combustion part through a cyclone effect on the surface of the cylindrical tube of the connecting member A plurality of spiral guide protrusions are formed upward so that heated air and wood gas can be collected from the combustion unit and rotated and raised. In addition, the primary combustion unit includes a box-shaped enclosure that can be inserted and withdrawn into the burner body, a combustion member that is at least partially inserted into the interior of the enclosure and distributes and heats and burns fuel pellets, and opens and closes the entrance of the enclosure. A door member that can be opened, and the housing has a first through hole connected to the pellet tray on an upper surface and a second through hole connected to the secondary combustion unit on a lower surface, and the combustion member is a pellet for fuel A combustion rod having a flat lattice structure is provided at the bottom so as to be raised, and a multistage plate capable of adjusting an angle to adjust the amount of fuel pellets supplied through the first through hole is provided on the upper portion of the combustion rod, and the secondary combustion unit It is provided in a double case structure of an inner case and an outer case, and a grid-shaped panel member is mounted in the inner case to receive pellet debris descended from the primary combustion unit and burn again.

According to the present invention, the stove main body has a plurality of heat transfer passages formed along the wall so that the wood gas and heated air circulate therein for reburning of the incomplete combustion or unburned wood gas transferred from the burner. , The heat transfer passages are formed concave outwardly along the inner wall of the stove body in a form protruding along the surface circumference of the stove body, and the stove body has a plurality of legs at the bottom to maintain a constant height from the bottom. Is provided, and an exhaust communication for discharging smoke in the stove body is provided on one side and a through hole connected to the hot air rising part on one side, and a socket member for connecting the inside of the stove body and the hot air rising part is installed in the through hole The socket member is provided with an opening and closing device for adjusting the heating power of the stove main body by adjusting the amount of inflow of wood gas and heated air, and check the inside installed in a state spaced apart from the stove main body at one side of the stove main body. A window is provided.

In the present invention, the pellet hopper includes a box-shaped housing in which fuel pellets are accommodated, and a distribution port for supplying fuel pellets to the pellet tray of the burner at one side of the housing, and the housing is expandable and retractable in the vertical direction. The outer housing and the inner housing are connected to each other and are configured to be overlapped upon contraction, and the patio heater is sequentially connected to the heater body, the joint part, and the exhaust communication, which is a main column above the legs at the bottom, There is provided a burner support, and the cylindrical column of the burner installed on the upper surface of the burner support is coupled to the lower portion of the heater body.

The firewood combined pellet stove with the above configuration is applied with a side-up combustion method and an'L'-type supply and exhaust method to prevent backfire to the fuel inlet and exhaust reversal.

In addition, the firewood combined pellet stove of the present invention It can be burned for a long time and is easy to store and carry as it has a separate and foldable structure.

In addition, the firewood combined pellet stove of the present invention Heat is not immediately discharged through the communication, but circulates through the main body of the stove, so it is efficient for heating due to high thermal efficiency.

In addition, the firewood combined pellet stove of the present invention Secondary and tertiary combustion is possible by the cyclone effect, and the generation of smoke and soot can be minimized by increasing the combustion efficiency.

1 is a view showing a combustion method and a gas discharge structure of a conventional pellet stove;
Figure 2 is a view showing a first embodiment of the combined use pellet stove according to the present invention,
3 is a view showing a second embodiment of the pellet stove for both firewood according to the present invention;
4 is a view showing the configuration of the burner shown in FIGS. 2 and 3;
5 is a view showing the configuration of the stove main body shown in FIG. 2;
6 is a view showing the configuration of the pellet hopper shown in FIGS. 2 and 3;
7 is a view showing the configuration of the patio heater shown in FIG.

Hereinafter, the present invention will be described in more detail through the accompanying drawings and embodiments.

In the following embodiments, the illustration and description are omitted except for inevitable parts in the description of the invention, and the same reference numerals are assigned to the same and similar elements throughout the specification, and detailed descriptions thereof will be omitted without repetition. do.

Figure 2 shows a first embodiment of the combined firewood pellet stove according to the present invention, a burner 100, a stove main body 200 installed on one side of the burner, and a pellet hopper installed on the other side of the burner ( 300), and this embodiment is mainly provided in a configuration for indoor installation. 3 shows a second embodiment of a pellet stove for firewood according to the present invention, and includes a burner 100, a patio heater 400 installed on one side of the burner, and a pellet hopper 300, This embodiment is mainly provided in a configuration for installing outdoors, such as on a terrace or veranda.

Figure 4 is an enlarged view of the burner shown in Figures 2 and 3, Figure 4a is an external configuration of the burner, Figure 4b is an exploded perspective view of the burner body constituting the burner, Figure 4c is a primary combustion constituting the burner Fig. 4D is an exploded perspective view showing a configuration of a secondary combustion unit constituting a burner.

The burner 100 is a device for burning firewood or pellets (hereinafter referred to as'fuel pellets'), which is fuel supplied from the pellet hopper 300, and the main body 110 constituting the burner 100 and the main body A pellet tray 120 installed on the top of the burner body 110 to collect fuel pellets supplied from the pellet hopper 300 as for supplying fuel pellets therein, and primary combustion of the fuel pellets And a primary combustion unit 130 and a secondary combustion unit 140 in which secondary combustion of fuel pellets is performed. The primary combustion unit 130 is installed inside the burner body 110 and the secondary combustion unit 140 is installed below the burner body 110.

The pellet tray 120 is provided with a fitting portion 121 at the bottom in a generally funnel shape, and the pellet tray 120 is connected to the upper surface of the burner body 110 to provide a fitting hole 111 through which pellets for fuel are supplied. Is formed. The burner body 110 is provided in a box-shaped structure that is elongated in the horizontal direction so that the primary combustion unit 130 is injected, and high-temperature heated air and wood gas generated from the primary combustion unit 130 and the secondary combustion unit ( A heat rising part 150 connected to the burner body 110 is provided at the opposite end of the combustion part inlet 112 in the longitudinal direction so that wood gases) move upward in an "L" shape toward the stove main body 200 do.

The heat rising part 150 is a cylindrical column (cylindrical column) 151, and a connecting member 152 connecting the interior of the stove body 200 and the cylindrical column 151 is provided inside the column. The connecting member 152 may be configured to have a connection portion 152a with the stove main body 200 in a rectangular shape, and a connection portion 152b with the cylindrical column 151 in a cylindrical tube shape. On the surface of the cylindrical tube 152b, a plurality of spiral guide protrusions (spiral protrusions 152c) are provided in the upward direction to collect heated air and wood gas using a cyclone effect, rotate and raise it, and such a helix protrusion 152c ) May preferably have a shape such as a helical gear. Here, the unexplained reference numeral '151a' denotes a'coupling flange' and a reference numeral '152d' denotes a'guide bar'.

The primary combustion unit 130 is inserted into the interior of the burner body 110 in the longitudinal direction, and a box-shaped enclosure 131 capable of input and withdrawal into and out of the burner body 110 and at least a part of the interior of the enclosure are inserted. It has a configuration including a combustion member 132 for distributing and heating and burning fuel pellets, and a door member 133 capable of opening and closing the entrance of the enclosure 131 for air supply control. The housing 131 is opened in both directions, and a first through hole 131a communicating with the fitting hole 111 is formed on the upper surface to connect the pellet receiver 120. The combustion member 132 is provided with a combustion rod (132a) having a flat lattice structure at the bottom, and the combustion rod (132a) of the fuel pellet supplied through the fitting hole 111 and the first through hole (131a) In order to adjust the amount, multi-stage plates 132b capable of adjusting the angle are provided. The pellets for fuel supplied from the pellet tray 120 are first combusted by ignition while being placed on the combustion rod 132a. The pellet residue remaining after the primary combustion falls to the secondary combustion unit 140 through the second through hole 131b formed in the bottom surface of the housing 131. Here, the unexplained reference numeral '132c' denotes a'plate adjuster' for adjusting the angle of the multi-stage plates 132b, the unexplained reference numeral '132d' denotes a'stand', and unexplained numeral '133a' denotes a Apparatus' respectively.

The secondary combustion unit 140 is installed under the burner body in the longitudinal direction of the burner body 110 and may be provided in a double case structure of an inner case 141 and an outer case 142, of which the inner case A grid-shaped panel member 143 is mounted on the 141 to receive the pellet debris descending from the primary combustion unit 130 and burn the pellets that have been incompletely burned again.

From this configuration, the pellets for fuel supplied from the pellet tray 120 are first combusted in the primary combustion unit 130 with the supply amount adjusted through the multistage plates 132b, and then the secondary combustion unit 140 In addition, it is completely burned, and a trace amount of ash remaining burned descends and is collected in the inner case 141. On the other hand, the high-temperature heated air and wood gas generated in the primary and secondary combustion units 130 and 140 are transferred to the stove main body 200 through the hot air rising unit 150, at this time, of the cylindrical column 151 It moves to the stove main body 200 while rotating at high speed due to the cyclone effect due to the spiral protrusions 152c of the cylindrical tube 152b in a mixed state with the external air supplied through the supply port 151b formed on the bottom surface. .

5 is an enlarged view of the stove main body shown in Fig. 2, Fig. 5a is an external configuration diagram of the stove main body, Fig. 5b is a partial exploded perspective view of the stove main body, Fig. 5c is a whole exploded perspective view of the stove main body, and Fig. 5d is a stove It is a side view of the main body.

The stove main body 200 is a means for heat exchange with indoor air using a large surface area of the high-temperature heat generated by the burner 100 to generate convection, and has a hollow cylindrical structure having a predetermined length and diameter.

In addition, the stove main body 200 is a place where the third combustion of the incomplete combustion or unburned wood gas transferred from the burner 100 takes place, and a through hole connected to the heat rising part 150 of the burner 100 at one side ( 201) and a window (internal confirmation window) 210 for checking the internal condition is formed, and on the other side, exhaust for discharging a trace amount of smoke that may be generated during the third combustion of wood gas in the stove main body 200 Communication 220 is provided.

In the through hole 201, a socket member 230 for connecting the inside of the stove body 200 and the heat rising part 150 of the burner 100 may be installed, and the inside of the socket member 230 An open/closer 231 may be provided for controlling the heating power of the stove main body 200 by controlling the amount of wood gas and heated air introduced from the 100 and the supply port 151b. Although not shown in detail, in the present embodiment, it is possible to additionally form an air supply hole in a part of the socket member 230.

The internal confirmation window 210 may be composed of a heat-resistant glass made of a crystal material, and as shown in FIG. 2E, by installing it in a state separated from the stove main body 200, an air curtain is formed and soot is generated or adhered to the surface. Can be prevented.

The stove main body 200 may include a plurality of legs 240 at the bottom to maintain a constant height from the floor, and these legs 240 may be provided in a detachable or foldable form. In addition, the interior of the stove body 200 is formed with a plurality of heat transfer passages 250 along the wall surface, and the heat transfer passages 250 protrude along the surface circumference of the stove body 200. It is formed to be concave outwardly along the inner wall of the main body 200. The exhaust communication 220 is preferably a part of the communication connected to the bottom surface of the stove main body 200 so that the smoke circulated through the heat transfer passage 250 is collected on the bottom of the stove main body 200 and then the exhaust communication ( 220) can be configured to be discharged to the outside.

6 is a view showing the pellet hopper shown in FIGS. 2 and 3, FIG. 6A is an external configuration diagram of the pellet hopper, FIG. 6B is a view showing a state change of the pellet hopper, and FIG. 6C is a state diagram of the pellet hopper in use. The pellet hopper 300 is a means for accommodating a large amount of firewood or pellets and supplying it to the burner 100, and a box-shaped housing 310 in which fuel pellets are accommodated and a pellet of the burner 100 on one side of the housing A distribution port 320 for supplying fuel pellets to the receiving tray 120 is provided. In the present invention, the pellet hopper 300 may be provided in a form capable of expanding and contracting in the vertical direction, and for this purpose, the housing 310 is connected to each other so that the outer housing 311 and the inner housing 312 can be overlapped when contracted. It is provided as a structure. The distribution port 320 is installed in the inner housing 312 to be retractable.

The pellet hopper 300 is installed on one side of the fuel burner 100, and for this purpose, a plurality of legs 330 may be provided under the housing 310, preferably at the bottom of the inner housing 312. have. Each of the legs 330 may be provided in a foldable structure, and when the pellet hopper 300 is stored, the distribution port 320 is first pushed in and the inner housing 312 is pushed into the outer housing 311. Each of the legs 330 can be folded to reduce the storage volume.

On the other hand, the firewood combined pellet stove of the present invention having the above configuration is a structure to which the lateral upward combustion method and the'L'-type supply and exhaust method are applied as shown in FIG. 2C, and the exhaust power through the exhaust communication 220 is strong and smooth. As a result, forced exhaust is unnecessary, the height of the communication channel can be lowered, and backfire to the fuel inlet and exhaust reverse phenomenon are prevented.

In addition, the firewood combined pellet stove of the present invention As shown in FIGS. 2D to 2E, the fuel supply adjusted from the pellet receiving unit 120 and the amount of air supplied from the primary combustion unit 130, the secondary combustion unit 140, and the socket member 230 are controlled. In the stove body 200, incomplete combustion or unburned wood gas from the burner 100 as well as secondary combustion through the cyclone effect in the hot air rising unit 150 is supplied from the outside. Since re-burning (third combustion) is possible at, the combustion efficiency is greatly increased, and thus the generation of exhaust smoke and soot can be minimized.

In addition, the firewood combined pellet stove of the present invention emits sufficient heat because high-temperature heat is not directly discharged to the exhaust communication passage 220, but can be burned for a long time while circulating in the stove body 200 along the heat transfer passage 250. Time can be secured, and as a result, thermal efficiency is high, making it efficient for heating.

7 shows the patio heater shown in FIG. 3, FIG. 7a is an external configuration diagram of the patio heater, FIG. 7b is an exploded perspective view of the patio heater, and FIG. 7c is a combined state diagram of the patio heater and butter. The patio heater 400 is installed on one side of the burner 100 in a configuration for using a firewood combined pellet stove outdoors such as a terrace or a veranda. The patio heater 400 is a structure in the form of a column, and the heater body 420 and the joint unit 440 and the exhaust communication 430 are sequentially connected to the upper legs 410 at the bottom, and the lower legs A burner pedestal 450 is provided between the fields 410. The burner pedestal 450 has a burner 100 installed on the upper surface, and according to FIG. 7C, the cylindrical column 151 of the burner 100 is coupled to the lower portion of the heater body 420.

In the patio heater 400 combined with the burner in this way, the high-temperature wood gas raised from the burner 100 is transferred to the heater body 420 through the hot air rising unit 150, wherein the wood gas is cylindrical column 151 The heater body 420 is rotated at high speed due to the cyclone effect by the spiral protrusions 152c of the cylindrical tube 152b while being mixed with the external air supplied through the supply port 151b formed on the bottom of the It is heated to an appropriate temperature within.

Although various embodiments of the present invention have been described above, the contents described so far are only to the extent that some of the preferred embodiments of the present invention are illustrated, except for those that may appear in the appended claims below. It is not limited by the above contents. Therefore, the present invention understands that many changes, modifications, and substitutions of equivalents can be made without departing from the spirit and spirit of the invention within the scope of the following claims, provided those of ordinary skill in the same technical field. You will have to do it.

100: burner
110: burner body
111: fitting hole
112: combustion part inlet
120: pellet tray
121: fitting
130: primary combustion part
131: enclosure
132: combustion member
133: door member
131a: first through hole
131b: second through hole
132a: combustion rod
132b: multistage plate
132c: plate adjuster
132d: cradle
133a: air supply
140: secondary combustion part
141: inner case
141a: air supply
142: outer case
143: panel member
150: heat rising part
151: cylindrical column
151a: coupling flange
151b: air supply
152: connecting member
152a: connection part
152b: connection part (cylindrical tube)
152c: spiral protrusion
152d: guide bar
200: stove body
201: through hole
210: internal confirmation window
220: exhaust communication
230: socket member
231: switch
240: leg
250: hot air passage
300: pellet hopper
310: housing
320: distribution port
311: outer housing
312: inner housing
330: legs
400: patio heater
410: legs
420: heater body
430: exhaust communication
440: joint part
450: burner stand

Claims (7)

A combined firewood pellet stove comprising a combustion burner, a stove body installed on one side of the burner for indoor installation or a patio heater installed on one side of the burner for outdoor installation, and a pellet hopper installed on the other side of the burner as,
The burner comprises a burner body, a pellet tray installed on the burner body to collect and supply fuel pellets supplied from the pellet hopper into the body, and a primary combustion unit in which the fuel pellets are first burned, A secondary combustion unit in which secondary combustion of the fuel pellets is performed, and a hot air rising unit connected to the burner body so that the high-temperature heated air generated in the primary combustion unit moves laterally upward toward the stove body. , The primary combustion unit is installed inside the burner body, the secondary combustion unit is installed at a lower portion of the burner body, and the heat rising unit is a cylindrical column, which connects the inside of the stove body and the inside of the cylindrical column. A connection member is built-in, and a plurality of spiral guide protrusions upward so that heated air and wood gas are collected and rotated from the primary combustion unit and the secondary combustion unit by a cyclone effect on the surface of the cylindrical tube of the connecting member. Firewood combined pellet stove, characterized in that they are formed. delete The method of claim 1,
The primary combustion unit includes a box-shaped enclosure that can be inserted and withdrawn into the burner body, a combustion member that is at least partially inserted into the interior of the enclosure and distributes and heats and burns fuel pellets, and an inlet of the enclosure that can be opened and closed. Including a door member, the housing is opened in both directions, a first through hole connected to the pellet tray on the upper surface and a second through hole connected to the secondary combustion unit is formed on the lower surface, and the combustion member is equipped with pellets for fuel. A combustion rod having a flat lattice structure is provided at the bottom of the combustion rod, and a multi-stage plate capable of adjusting an angle to adjust the amount of fuel pellets supplied through the first through hole is provided on the upper portion of the combustion rod, and the secondary combustion unit And a double case structure of an outer case, wherein a panel member in the form of a grid is mounted on the inner case to receive pellet debris descending from the primary combustion unit and burn again. The method of claim 1,
The stove main body has a plurality of heat transfer passages formed along a wall surface so that the wood gas and heated air circulate therein for re-burning of the incomplete or unburned wood gas transferred from the burner, and the heat transfer passage The firewood combined pellet stove, characterized in that protruding along the surface circumference of the stove main body and concave in the outer surface direction along the inner wall of the stove main body. The method of claim 4,
The stove main body is provided with a plurality of legs in the lower portion to maintain a constant height from the floor, one side is provided with a through hole connected to the hot air rising portion and an exhaust communication for discharging the smoke in the stove body on the other side, the through hole A socket member for connecting the inside of the stove main body and the hot air rising part is installed, and an opening and closing device for adjusting the heating power of the stove main body by adjusting the inflow amount of wood gas and heated air is provided inside the socket member, the Firewood combined pellet stove, characterized in that provided with an internal confirmation window installed in a state spaced apart from the stove body on one side of the stove body. The method of claim 1,
The pellet hopper includes a box-shaped housing in which fuel pellets are accommodated, and a distribution port for supplying fuel pellets to the pellet tray of the burner at one side of the housing, and the housing is an outer housing so as to expand and contract in the vertical direction. And the inner housing are connected to each other, and the outer housing and the inner housing are configured to overlap each other upon contraction. The method of claim 1,
In the patio heater, a heater body, a joint part, and an exhaust communication are sequentially connected to an upper part of the lower legs, and a burner support is provided between the legs and a cylindrical column of the burner installed on the upper surface of the burner support. Firewood combined pellet stove, characterized in that coupled to the lower portion of the heater body.

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