KR20160094775A - Pellet stove - Google Patents

Abstract

The present invention relates to a pellet stove, and more particularly, to a pellet stove which automatically feeds a pellet to a furnace (8) by a feed screw (13) rotating and driven by a drive motor (M) under a hopper (12) A combustion section 20 for igniting the pellets supplied to the furnace 8 by the ignition section 22 and burning the pellets in the combustion chamber 21; A supply portion 30 for supplying combustion air to the furnace by providing a supply cylinder 31 connected to the combustion portion 32 and a discharge portion 40 for discharging the exhaust gas of the combustion portion 20, 20 and the heat exchanging heating unit 50 for providing the heating air formed by the heat exchange in the exhaust unit 40 are integrated in the main body 2 so that the overall design is made compact and the combustion efficiency and the heat exchange The heating performance is improved by the improvement of the efficiency, and further, the reprocessing operation is performed in a simple manner It has its characteristics.

Description

Pellet Stove {PELLET STOVE}

The present invention relates to a pellet stove. More particularly, the present invention relates to a pellet stove, and more particularly, to a pellet stove, which includes a pellet supply unit, a combustion unit, a pneumatic exhaust unit, The present invention relates to a pellet stove excellent in performance and easy to reprocess.

As is well known, in winter homes, restaurants, offices, factories and rural areas, heating is used for indoor heating.

The heating device is expensive because it is expensive to use electricity, gas, oil, briquette and the like because of its high cost. In the case of wood, the cost is low, but difficulties in supplying and handling are inconvenient there was.

As a result, research on biomass solid fuels has been actively pursued as interest in renewable energy has increased recently. This is a renewable energy extracted from waste such as energy-only crops and trees, agricultural and feed crops, farm wastes and debris Not only is it capable of self-sufficiency, it can also greatly reduce environmental pollution.

Pellets of the above-mentioned biomass solid fuels are attracting attention as eco-friendly fuels which are easy to be transported and handled, and made of small cylindrical pellets so that pure logs are compressed at high temperature and high pressure and dehydrated for a long time.

Particularly, the pellets are converted into clean energy by sorting, drying and compressing wood byproducts by sawdust, and the calories are more than 4,500 kcal / kg, which is twice as high as that of generalized wood or chips.

The pellet stove using such a pellet is disclosed in various forms. As shown in Patent Registration No. 10-1315109, the pellet stove is installed at one side of the inside of the main body housing to burn pellets, and a heat exchanger formed on the upper side of the burner to perform heat exchange A main body including a duct, a downward duct connected to the heat exchange duct and a distribution duct so as to move the exhaust gas of the burner downward, and a re-collecting chamber for collecting and collecting ashes from the combustible gas discharged from the downward duct; A supply part for supplying pellets to the burner; And a discharging portion communicating with the re-collecting chamber, wherein the supplying portion for supplying the pellets is configured such that the conveying screw rotating by the driving motor below the hopper drops the pellets by the burner to supply the pellets to the burning flame Heat exchange is performed in the heat exchange duct in the upper part of the combustion chamber, and the exhaust gas is discharged through the downward duct-distribution duct-re-collecting chamber and the exhaust part.

However, the above conventional pellet stove has a structure in which a pellet supply unit, an exhaust unit, and the like are further coupled to the outside of the main body, resulting in poor design and merchantability, and difficulty in providing a compact structure.

Moreover, since the combustion flame heated and burned by the pellets is subjected to the first heat exchange in the heat exchange duct in the upper part of the combustion chamber and then discharged as the exhaust gas, heat loss is large and the efficiency of heat exchange is not particularly improved, There is a problem in that it falls off.

In addition, since the re-collecting chamber and the exhausting portion are completely separated from each other, the re-collecting chamber and the exhausting portion are separately decomposed and opened for the purpose of re-collecting. Therefore, the reprocessing operation is inconvenient, There is a separate treatment room for collecting the ash generated in the combustion process. Therefore, it is inconvenient to frequently clean the inside of the combustion chamber after using the stove.

Patent Document 1: Registration No. 10-1315109 Patent Document 2: Registration No. 10-134044

It is an object of the present invention to provide a pellet supply unit, a combustion unit, a pumping unit, and a heat exchange heating unit, which are compact in the entire design, in order to solve all the problems of the prior art described above.

The present invention improves the combustion efficiency by supplying sufficient combustion air to the combustion unit and also improves the efficiency of heat exchange by improving the heat exchange efficiency by multi-stage heat exchange such as the combustion unit and the exhaust unit through which the exhaust gas is discharged It has its purpose.

The present invention aims at providing an excellent reprocessing workability since it can be easily reprocessed as well as collecting the ashes from the refuse collection chamber and the exhaust chamber from the ash generated in the combustion section and the exhaust gas contained in the exhaust gas from the exhaust section have.

According to the present invention, there is provided a pellet feeder comprising a pellet feeder for automatically feeding pellets to a furnace by a feed screw rotationally driven by a drive motor below a hopper for storing pellets, and a pellet feeder for pelletizing the pellets supplied to the furnace, A supply portion for supplying combustion air to the furnace by providing a supply portion connected to the lower portion of the furnace with a supply pipe,

And a heat exchange heating unit for supplying the heating air formed by heat exchange in the combustion unit and the exhaust unit is integrated in the main body,

The exhaust unit includes at least one internal exhaust pipe on the lower side of the upper portion of the combustion chamber and an exhaust passage for collecting and exhausting the exhaust gas by the blower at a lower portion of the internal exhaust pipe,

The heat exchange unit includes at least one heat exchange tube connected to the upper portion of the combustion chamber through the front and rear of the combustion chamber. The heat exchange tube is spaced apart from the left, right, and rear surfaces of the combustion chamber at the rear of the heat exchange tube. And the heat exchange chamber is connected to the heat exchange chamber and the heat exchanger tube and the heat exchange tube provide heat exchange by the external air.

A re-watering chamber for collecting ash falling from a combustion chamber is provided in an outer lower portion of the furnace of the present invention, and the re-collection chamber and the exhaust port are located inside the opening and closing door provided in front of the combustion portion of the main body, And a door that can be opened and closed is provided at the front of the exhaust gas reservoir, and the ash collected in the re-water storage chamber and the exhaust gas passing through the exhaust gas can be respectively cleaned.

The heat exchange chamber of the present invention is characterized in that air holes for supplementing combustion air are further connected to the combustion chamber on both sides of the heat exchange chamber.

According to the present invention, since the pellet supply unit, the combustion unit, the exhaust unit, and the heat exchange unit are integrated in the main body, the overall design is compact, and the product design and merchantability are excellent.

In addition, since sufficient combustion air is supplied to the combustion section to increase the combustion efficiency, the heat exchange efficiency is enhanced by multi-stage heat exchange such as a combustion section and an exhaust section through which the exhaust gas is discharged, will be.

In addition, ashes as well as materials contained in the exhaust gas are collectively collected in the ash collecting chamber and the exhaust port in the ash generated from the combustion section and the exhaust port as well as the re-collecting chamber and the exhaust port are opened by opening / So that the reprocessing workability is excellent.

BRIEF DESCRIPTION OF THE DRAWINGS Fig.
FIG. 2 is a front perspective view showing a partially cut-away state of FIG. 1; FIG.
FIG. 3 is a side perspective view showing a partially cut-away state of FIG. 1; FIG.
4 is a side cross-sectional view of the present invention.
FIG. 5 is a perspective view of the main part of the present invention. FIG.
Fig. 6 is a rear perspective view of Fig. 5; Fig.
7 is a front view of Fig.
8 is a sectional view taken along the line AA in Fig.
Fig. 9 is a plan view of Fig. 5; Fig.
10 is a front view of a recessed portion showing the conveying screw of the present invention.
11 is a side sectional view showing an operating state of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The pellet stove of the present invention comprises a main body 2 and a pellet supply portion 10 for automatically supplying pellets to a furnace 8 inside the main body as shown in Figs. 1 to 10, (30) for supplying combustion air to the combustion section, an exhaust section (40) for exhausting the exhaust gas generated in the burning process of the combustion section, and a burner section And a heat exchange heating unit (50) for supplying the heating air by heat exchange at the exhaust part.

Particularly, the pellet supply unit 10, the combustion unit 20, the supply unit 30, the exhaust unit 40, and the heat exchange heating unit 50 are integrated in the main body 2 to constitute a compact structure will be.

The main body 2 is provided with an opening and closing door 3 having a transparent transparent window 3a in front of the combustion unit 20 on the front surface thereof and an air discharge port connected to the heat exchange heating unit 50 for discharging the heating air to the front 4), and a through hole (5) through which an exhaust pipe (not shown) of the exhaust unit (40) of the air supply unit (32) of the air supply unit (30) and a heat exchange heating unit And a plurality of ventilation holes 6 for supplying air are formed to pass through.

The pellet supply unit 10 includes a hopper 12 for storing pellets to be poured into the upper charging hole 11 and a conveying unit for vertically feeding the pellets while being rotated by a driving motor M, A screw 13 and a pellet supply pipe 15 for dropping and supplying the pellets fed and fed by the feed screw to the furnace 8. [

The combustion unit 20 is provided with a furnace 8 below the combustion chamber 21 and an ignition unit 22 for initially igniting the pellets supplied to the furnace such as a ceramic heater is provided at one side of the furnace 8, And a re-water storage compartment 25 for collecting the material falling in the combustion chamber 21 at the lower outer side of the furnace.

At this time, a diaphragm 24 through which a plurality of holes 24a pass is provided between the combustion chamber 21 and the re-water storage compartment 25 to drop the ashes downward.

The supply unit 30 is configured to supply a combustion air to the furnace by providing a supply cylinder 31 connected to the air supply unit 32 below the furnace 8. [

The exhaust unit 40 includes an internal exhaust pipe 41 formed on both sides of the upper portion of the combustion chamber 21 in parallel and at least one exhaust pipe 42 for sucking exhaust gas by a blower 43 under the internal exhaust pipe ).

At this time, the exhaust pipe 42 also functions as a re-watering chamber for collecting the ashes contained in the exhaust gas.

The heat exchange heating unit 50 includes at least one heat exchange tube 51 connected to the upper portion of the combustion chamber 21 through a discharge port 4 in front of the main body 2 to the front and rear of the combustion chamber, A heat exchange chamber 52 which is spaced apart from the combustion chamber 21 on the left, right and rear sides and into which the internal exhaust pipe 41 of the exhaust unit is inserted and which has an air inlet 53 at the lower portion thereof are connected to each other, ) And the heat exchange tube (51) by heat exchange.

That is to say, the heat exchange heating section 50 performs heat exchange by the heat exchange tube 51 passing through the upper part of the combustion chamber 21, heat exchange by the combustion heat of the combustion chamber in the heat exchange chamber 52 outside the combustion chamber 21, The heat exchange efficiency of the heating air is increased while the heat exchange by the exhaust gas of the internal exhaust pipe (41) passing through the heat exchange chamber (52) vertically is performed in multiple stages.

A plurality of tubes of the heat exchange tube 51 are arranged in parallel to each other and are jig-jig arranged in the vertical direction so that the combustion flame is guided to pass through the jig jig instead of vertically passing through the heat exchange tubes. It is preferable to make it possible to pass through the contact.

The heat exchange chamber 52 is further provided with air holes 58 for replenishing the combustion air in both sides of the combustion chamber 21 so as to perform complete combustion of the combustion chamber 21.

The present invention is characterized in that the pellet fuel supply amount by the control of the feed screw 13 by the drive motor of the pellet supply section 10 and the supply and discharge amount control by the blower 43 of the supply section 30 and the exhaust section 40 The amount of combustion of the pellets, and the combustion time, so that the temperature of the stove can be controlled.

The present invention is configured such that the rehousing room (25) and the exhausting chamber (42) are located inside the opening and closing door (3) provided at the front of the main body (2) A door that can be opened and closed can be provided in front of the exhaust gas recirculation passage 25 so that the collected material in the re-water storage chamber 25 and the exhaust gas passing through the exhaust passage 42 can be respectively cleaned.

Hereinafter, the operation and operation of the present invention will be described.

First, pellets are supplied to the hopper 12 of the pellet supplying section 10 through the inlet 11 in the upper part of the main body 2.

The pellets stored in the hopper 12 of the pellet supply section 10 are transferred by the transfer screw 13 driven and rotated by the drive motor M to be supplied to the pellet supply pipe 15 To the furnace (8) of the combustion section (20).

When the pellets are dropped and supplied to the furnace 8 of the combustion unit 20 as described above, the initial ignition is performed by the ignition unit 22 such as the ceramic heater.

As described above, the pellets of the furnace 8 are ignited and burned, and the combustion flame is supplied upward to the upper combustion chamber 21.

At this time, in the air supply unit 30 below the furnace 8, combustion air introduced into the feed cylinder 31 is supplied through the air supply unit 32 to increase combustion efficiency of the pellets.

The combustion flames of the pellets rise to the upper combustion chamber 21 and pass through the heat exchange tubes 51 passing through the combustion chamber 21 to the upper portion of the combustion chamber back and forth in the form of a zigzag, And is then discharged upward.

The hot exhaust gas having undergone the heat exchange of the heat exchange tubes 51 is branched and guided through a plurality of internal exhaust pipes 41 formed vertically downward on both sides of the upper portion of the combustion chamber 21 and collected in the exhaust tube 42 in the lower portion .

At this time, the exhaust gas smoothly operates to be discharged to the outside through the combustion chamber 21, the internal exhaust pipe 41, and the exhaust pipe 42 by the suction operation of the blower 43 connected to the exhaust pipe 42.

On the other hand, in the heat exchange chamber 52 separated from the left, right, and rear surfaces of the combustion chamber 21, external air introduced through the lower air inlet 53 performs heat exchange with the wall surface of the combustion chamber 21, Exchanges heat with the inner exhaust pipe 41 of the exhaust unit via the exchange chamber 52 to heat the heating air.

Particularly, since the heat exchange chamber 52 is connected to the rear of the heat exchange tube 51, the heat exchange by the heat exchange tube 51 passing over the upper portion of the combustion chamber 21 and the heat exchange by the heat exchange chamber 52) performs heat exchange by combustion heat of the combustion chamber and heat exchange by exhaust gas of the internal exhaust pipe (41) vertically passing through the heat exchange chamber (52) (4), the heat loss is small and the heating efficiency is excellent.

In addition, in the present invention, air holes 58 connected to the combustion chamber 21 are formed on both sides of the heat exchange chamber 52 to supplement the combustion air, so that the pellets are completely burned in the combustion chamber 21, Thereby minimizing the emission of the exhaust gas.

The material generated during the combustion process of the pellets in the combustion chamber 21 while being heated by burning the pellets is dropped and collected in the re-storage chamber 25 at the lower portion of the combustion chamber, and the material contained in the exhaust gas is discharged from the discharge chamber 42 Collected.

When the opening and closing door 3 in the front of the main body 2 is opened, the rehousing room 25 and the exhausting chamber 42 are located inside the opening and closing door, So that the collected material in the re-water storage compartment 25 and the exhaust chamber 42 can be simply cleaned by opening the door in front of the re-storage compartment 42.

Accordingly, the present invention can reduce the overall design by compacting the pellet supply portion 10, the combustion portion 20, the supply portion 30, the exhaust portion 40, and the heat exchange heating portion 50 in the main body 2 In addition, the heating efficiency is improved by improving the combustion efficiency and the heat exchange efficiency, and the reprocessing work can be easily provided.

2: Hopper 3: opening / closing door
4: Outlet 8: Brazier
10: pellet supply part 12: hopper
13: Feed screw 20: Combustion part
21: combustion chamber 22: ignition part
25: re-number living room 30:
31: feed cylinder 32:
40: exhaust part 41: internal exhaust pipe
42: exhaust pipe 43: blower
50: Heat exchange heating part 51: Heat exchange tube
52: heat exchange chamber 53: air inlet
58: air hole

Claims (3)

A pellet feeder 10 for automatically feeding pellets to the furnace 8 by a feed screw 13 driven by a drive motor M under the hopper 12 for storing the pellets,
A combustion section 20 for igniting the pellets supplied to the furnace 8 by the ignition section 22 and burning the pellets in the combustion chamber 21,
A supply portion 30 for supplying combustion air to the furnace by providing a feed cylinder 31 connected to the lower end of the furnace 8 via a feed pipe 32,
An exhaust unit 40 for exhausting the exhaust gas of the combustion unit 20,
A heat exchange heating unit (50) for providing heating air formed by heat exchange in the combustion unit (20) and the exhaust unit (40) is integrated in the body (2)
The exhaust unit 40 includes at least one internal exhaust pipe 41 below the combustion chamber 21 and an exhaust pipe 42 for sucking and collecting the exhaust gas by the blower 43 under the internal exhaust pipe To configure the connection,
The heat exchange heating unit 50 includes at least one heat exchange tube 51 connected to the upper portion of the combustion chamber 21 through the front and rear of the combustion chamber 21, And a heat exchange chamber 52 having an air inlet port 53 at the lower portion is connected to allow external air to be exchanged between the heat exchange chamber 52 and the heat exchange pipe 51 for heat exchange To provide heating air.
The method according to claim 1,
A re-water storage chamber (25) for collecting the material falling in the combustion chamber (21) is provided at the lower outer side of the furnace (8)
Wherein the re-storage chamber (25) and the exhaust chamber (42) are located inside the opening and closing door (3) provided in front of the combustion unit (20) of the main body (2) 42 are respectively provided with openable doors so that the collected material in the re-water storage compartment 25 and the collected material passing through the exhaust pipe 42 can be respectively cleaned.
The method according to claim 1,
Wherein the heat exchange chamber (52) is further formed with air holes (58) for supplementing combustion air to both sides of the combustion chamber (21).

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