KR20140126634A - Pellet boiler - Google Patents

Pellet boiler Download PDF

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Publication number
KR20140126634A
KR20140126634A KR1020130045052A KR20130045052A KR20140126634A KR 20140126634 A KR20140126634 A KR 20140126634A KR 1020130045052 A KR1020130045052 A KR 1020130045052A KR 20130045052 A KR20130045052 A KR 20130045052A KR 20140126634 A KR20140126634 A KR 20140126634A
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KR
South Korea
Prior art keywords
fuel
supply pipe
air
combustion chamber
transfer device
Prior art date
Application number
KR1020130045052A
Other languages
Korean (ko)
Inventor
이대훈
Original Assignee
주식회사 한진보일러
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 한진보일러 filed Critical 주식회사 한진보일러
Priority to KR1020130045052A priority Critical patent/KR20140126634A/en
Publication of KR20140126634A publication Critical patent/KR20140126634A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B40/00—Combustion apparatus with driven means for feeding fuel into the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B80/00—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel
    • F23B80/04—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel by means for guiding the flow of flue gases, e.g. baffles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/34—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water chamber arranged adjacent to the combustion chamber or chambers, e.g. above or at side
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
    • F24H9/1845—Arrangement or mounting of combustion heating means, e.g. grates or burners using solid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B2700/00—Combustion apparatus for solid fuel
    • F23B2700/003—Combustion apparatus for solid fuel adapted for use in water-tube boilers

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Solid-Fuel Combustion (AREA)

Abstract

A pellet boiler is disclosed. According to the present invention, the pellet boiler includes a fuel storage device storing fuel; a fuel transporting device to transport fuel provided from the fuel storage device; and a fuel supplying pipe guiding the fuel transported by the fuel transporting device. One end of the fuel supplying pipe is connected to a combustion chamber whereas another end of the fuel supplying pipe is spaced from the combustion chamber. Accordingly, the fuel transported by the fuel transporting device is provided by passing through the fuel supply pipe. The structure stated above prevents fire in the fuel storage device due to flame from flowing back, facilitates transportation of fuel, and contributes to smooth operation of the pellet boiler and increasing the efficiency of the boiler by preventing errors in a device due to fixation of pellet.

Description

[0001] PELLET BOILER [0002]

The present invention relates to a pellet boiler, and more particularly, to a pellet boiler capable of preventing failure of a fuel supply device for supplying fuel and facilitating smooth transfer of fuel.

A pellet is a product made by crushing, drying and compacting wood into small particles such as sawdust and forming it into small granules. It is small in size, homogenized and standardized, and easy to store and reprocess. There is a lot of fuel used. A pellet boiler using the same refers to a boiler that uses combustion heat generated by burning pellets for heating or hot water.

In a pellet boiler, a device for supplying pellets, that is, a fuel supply device, becomes a main constituent factor of product performance. The fuel supply device is largely divided into a top-down type, a top-down type, and a horizontal type according to the fuel supply position. 1 is a view showing a part of a conventional pellet boiler. 1, the pellet is stored in a hopper 10 and is then fed to a combustion chamber (not shown) by a screw conveyer 20 which is rotationally driven by a motor 40 and a chain gear 30 50).

In the conventional pellet boiler, the screw conveyor 20 has a structure directly connected to the inside of the combustion chamber. In the conventional structure of the pellet boiler, since the end of the screw conveyor for injecting the pellets is directly in contact with the combustion chamber, not only the deformation due to high temperature is caused but also the end inserted in the combustion chamber does not hold the bearing properly There is a problem that wear due to shaking occurs, and a flame is backed up in the combustion chamber and a fire is generated in the hopper.

Further, the fuel supply stagnation due to the fuel tangling phenomenon, or the space of the screw conveyor and the cylinder is widened, so that the pellet powder accumulated in the space is fixed due to moisture or moisture, or the fuel supply device becomes impossible to operate However, due to the irregular size of the pellets, there is a problem that the pellets are not properly injected into the combustion chamber due to a hooking phenomenon at the fuel inlet.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a fuel supply apparatus and a fuel supply apparatus which prevent fire of a fuel storage device due to flame back- The present invention provides a pellet boiler in which malfunction of the device due to fixing of pellets can be prevented, and operation and efficiency can be improved.

According to an aspect of the present invention, there is provided a pellet boiler comprising a fuel storage device for storing fuel, a fuel transfer device for transferring the fuel provided from the fuel storage device, and a fuel conveyed from the fuel transfer device, And a fuel supply pipe guiding the fuel to the combustion chamber, wherein one end of the fuel supply pipe is connected to the combustion chamber and the other end is connected to the fuel transfer device provided apart from the combustion chamber, Is supplied to the combustion chamber through the fuel supply pipe.

The fuel supply system may further include an air supply pipe for injecting air into the fuel supply pipe, and the air supply pipe may be connected to the other end of the fuel supply pipe connected to the fuel transfer device.

The apparatus may further include an air generator for generating air to be supplied to the air supply pipe, and an air distributor for separating the flow of air supplied from the air generator and supplying the separated air to different positions.

The air distributor may further include a plurality of discharge pipes for discharging respective separated flows, one of the plurality of discharge pipes being physically connected to the air supply pipe, and air supplied from one of the plurality of discharge pipes And can be injected into the fuel supply pipe through the air supply pipe.

The other one of the plurality of discharge pipes is connected to an oil burner, and another one of the plurality of discharge pipes is connected to a flame detector for detecting a flame in the combustion chamber.

The air supply pipe may further include an air guide for guiding the flow of air injected from the air supply pipe in a specific direction to the other end of the fuel supply pipe.

According to the pellet boiler having the above-described structure, fire of the fuel storage device due to the back flame of the flame can be prevented, the fuel can be smoothly conveyed, and the device can be prevented from malfunctioning due to the fixation of the fuel pellet, Smooth operation and efficiency can be increased.

1 is a view showing the construction of a conventional pellet boiler,
2 is a view showing the construction of a pellet boiler 100 according to an embodiment of the present invention,
3 is an enlarged view of a connection relationship between a fuel transfer device, a fuel supply pipe, and a combustion chamber according to an embodiment of the present invention,
4 is a view showing a part of the fuel supply pipe 135 according to an embodiment of the present invention,
5 is a view illustrating a configuration of a connection unit 132 according to an embodiment of the present invention,
6 and 7 are views showing a configuration of an air distributor according to an embodiment of the present invention.

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

2 is a view showing the construction of a pellet boiler 100 according to an embodiment of the present invention. In FIG. 2, the right side of the pellet boiler 100 stores pellets as fuel and transfers the pellets to the combustion chamber. In the left part, the transferred fuel is burned to generate heat energy, And the like.

A hopper, which is a fuel storage device 110 for storing the pellets, is vertically connected to the fuel transfer device 130 to supply the pellets. Of course, the pellet may be configured in a different form from that of FIG. The pellets stored in the fuel storage device 110 are supplied to the fuel transfer device 130 and moved to the combustion chamber 140.

At this time, the fuel conveyance device 130 composed of a screw conveyor performs a rotation operation under the control of the motor 160 and the chain gear 165, and the pellet separated from the fuel storage device 110 is rotated And advances to the combustion chamber 140 by the rotational motion. The motor 160 and the chain gear 165 may control the rotational speed of the fuel transfer device 130 to control the supply speed of the pellet.

As shown in the drawing, the pellet boiler 100 according to an embodiment of the present invention is not directly connected to the combustion chamber 140, unlike the conventional pellet boiler. Unlike the conventional pellet boiler, a fuel supply pipe 135 is provided between the fuel transfer device 130 and the combustion chamber 140, and the fuel supply pipe 135 connects the pellets transferred from the fuel supply pipe 135 to the combustion chamber 140 It serves as an intermediary to deliver.

In other words, one end of the fuel supply pipe 135 is connected to the combustion chamber 140, and the other end of the fuel supply pipe 135 is connected to the fuel transfer device 130 to connect the combustion chamber 140 and the fuel transfer device 130 And is a passage for pellet movement.

According to the configuration of the present invention, since one end of the fuel transfer device 130 is not in direct contact with the combustion chamber 140, it is possible to prevent the fuel storage device 110 from being fired due to back flame So that not only the fuel transfer by the fuel transfer device 130 can be smoothly performed but also the failure of the device due to the fixation of the pellet can be avoided so that the smooth operation and the efficiency increase of the pellet boiler can be achieved.

The fuel supply pipe 135 may be connected horizontally to transfer the pellets supplied from the fuel transfer device 130 to the combustion chamber 140, but it is preferable to maintain a constant inclination to move the pellets by gravity. However, in the case where a device capable of moving the pellet is provided separately, it may be connected horizontally, and it may be assumed that it has a rising slope.

The fuel supply pipe 135 may further include a first air supply pipe 123 for supplying air to both ends of the fuel supply pipe 135 to which the fuel transfer device 130 is connected. The air introduced from the first air supply pipe 123 adds force to direct the pellets transferred to the fuel supply pipe 135 to the combustion chamber 140. That is, it helps to move the pellets by adding air pressure not only by gravity.

Also, the first air supply pipe 123 prevents the pellets from being deposited on the connection portion between the fuel transfer device 130 and the fuel supply pipe 135, thereby facilitating the fuel transfer. The first air supply pipe 123 receives the air generated by the air generation device 128 and transfers the generated air to the fuel supply pipe 135. The generated air passes through the configuration of the air distributor 120 therebetween. The configuration will be described in more detail with reference to FIG. 6 and FIG.

And may further include an air guide 133 between the fuel supply pipe 135 and the first air supply pipe 123. The air guide 132 has a function of guiding the air introduced from the first air supply pipe 123 in a specific direction. The air guide 132 allows the air introduced from the first air supply pipe 123 to flow in a predetermined direction so that the pellets provided from the fuel transfer device 130 can be sequentially directed to the combustion chamber 140 through the fuel supply pipe 135 Thereby preventing the pellet from sticking or clogging due to agglomeration.

Of course, the structure of the air guide 132 may be omitted in other embodiments because it is a structure used to smooth the flow while assisting the movement of the pellet. Further, the material of the air guide 132 is not limited to any particular material as long as it has a rigidity that can keep the flow of air constant.

When the pellets are supplied to the combustion chamber 140, the pellets are burnt in the combustion chamber 140 to generate thermal energy. The generated heat energy is transferred to the upper combustion chamber 140 through a plurality of connections 150 vertically connected to the combustion chamber 140. (156).

The heat of combustion of the pellets is also used to heat irrigation water 152 existing between the combustion chamber 140 and the outer wall 154 of the boiler. A variety of conventional methods can be used in connection with the method of using the heat of combustion of the pellets in the boiler. In order not to obscure the essence of the present invention, a detailed description will be omitted here.

The other boiler 100 may have a configuration such as the grate 142, the ashtray 146, and the cleaning / inspection port 158, and these configurations are the same or similar to those provided in the conventional boiler We will avoid detailed explanation here.

Meanwhile, the second air supply pipe 125 and the third air supply pipe 127 are respectively provided in the light pipe 124 and the oil burner 126 of the boiler 100 according to an embodiment of the present invention. The second air supply pipe 125 and the third air supply pipe 127 are physically connected to the air distributor 120 together with the first air supply pipe 123 mentioned above, And is configured to supply the air distributed by the air distributor (120). This will be described in more detail with reference to FIGS. 6 and 7. FIG.

3 is an enlarged view of a connection relationship between the fuel transfer device, the fuel supply pipe, and the combustion chamber according to the embodiment of the present invention. In particular, FIG. 3 is to illustrate the connection relationship of the above-described configurations, and the configurations of the first air supply pipe 123 and the air guide 133 are omitted.

3, the fuel feed device 130 is composed of a screw conveyor and is rotated by the operation of the motor 160 and the chain gear 165. The motor 160 and the chain gear 165 rotate, Adjusts the rotational speed of the fuel feeder 130 to adjust the feed rate of the pellet.

The fuel storage device 110 is configured to store a large amount of pellets to be used as fuel in the combustion chamber 140. The fuel storage device 110 is vertically connected to the fuel transfer device 130 to transfer the pellets to the fuel transfer device 130 Drop it.

The fuel transfer device 130 which rotates by the control of the motor 160 and the chain gear 165 transfers the pellets to the fuel supply pipe 135 and the pellets transferred to the fuel supply pipe 135 And moves into the combustion chamber 140 by gravity or air pressure.

The fuel transfer device 130 is not connected to the boiler outer wall 154 as shown in FIG. 3 and does not contact the combustion chamber 140 existing in the boiler outer wall 154. A fuel supply pipe 135 is provided between the fuel transfer device 130 and the combustion chamber 140 so that the pellets are supplied into the combustion chamber 140 through the fuel supply pipe 135.

The fuel supply pipe 135 is connected to the combustion chamber 140 and the other end of the fuel supply pipe 135 is connected to the fuel transfer device 130. The pellet boiler of the conventional boiler, Problems and the like can be solved.

4 is a view showing a part of the fuel supply pipe 135 according to an embodiment of the present invention. More specifically, the other end of the fuel supply pipe 135, that is, the side configuration in which the fuel transfer device 130 is provided is shown in detail FIG. The configuration of the combustion chamber 140 and the fuel transfer device 130 is omitted here for the sake of simplification of the drawings. 5 illustrates a configuration of the connection unit 132 according to an embodiment of the present invention. The connection unit 132 includes a fuel supply pipe 135, a fuel transfer device 130, and a first air supply pipe 123 And has a function of fastening.

First, as shown in FIG. 4, a first air supply pipe 123 is provided at one side of the fuel supply pipe 135, through which air flows. The introduced air not only provides the air pressure for transferring the pellets transferred from the fuel transfer device 130 to the combustion chamber 140, but also prevents the pellets from sticking or sticking in the fuel supply pipe 135 as described above. Further, an air guide 133 may be further provided, which allows the air introduced from the first air supply pipe 123 to flow in a predetermined direction.

The connecting portion 132 engages the fuel supply pipe 135 and the fuel transfer device 130. 4, the fuel transfer device 132 is provided at the upper portion of the connection portion 132 and the first air supply pipe 123 is provided at the lower portion of the connection portion 132. However, the fuel transfer device 132 may be provided at another position.

5, a hole is formed in the upper portion 132-1 to which the fuel transfer device 132 is attached, so that the pellets transferred from the fuel transfer device 132 are connected to the fuel supply pipe 135 ). ≪ / RTI > And a first air supply pipe 123 is connected to the lower portion. Any shape or shape of the connecting portion 132 may be used.

6 and 7 are views showing a configuration of an air distributor according to an embodiment of the present invention. Generally, a boiler is provided with a phototube for detecting a flame in a combustion chamber and an oil burner for burning fuel.

A photo tube is a cathode in which a film of sodium, potassium, or cesium is attached to the inner surface of a glass tube filled with a vacuum or a low-pressure gas, and an anode is disposed in the center of the tube. When light is emitted to the cathode, It has the function of converting the change of light into electric current and is used in the light receiving part of the flame detector. In addition, oil burners are devices for burning fuel, such as pressurized spray, rotary atomizer, and steam atomizer. In the present invention, the phototube 124 and the oil burner 126 are provided as shown in FIG. 2, and any kind of the phototube 124 and the oil burner 126 may be used.

As shown in FIG. 6, the air distributor 120 is connected to an air generating device 128 composed of a blower or the like by a pipe 128-1. Of course, the connecting means may be other than pipes. The air distributor 120 has a plurality of discharge pipes 120-1, 120-2 and 120-3, and a total of three discharge pipes are shown in Fig. 6, but it is also possible to provide a fewer or more discharge pipes . The air pressure discharged from the air distributor 120 may be adjusted according to the diameter of each discharge pipe, but a structure for adjusting the air pressure may be further added.

The first outlet pipe 120-1 is connected to the first air supply pipe 123 by a means such as a hose or a pipe so that air generated from the air generating device 128 is physically connected to the first air supply pipe 123 Fuel supply pipe 135 to the outside. The air flowing into the fuel supply pipe 135 has a function of blocking the accumulation of the pellets and smoothly transferring the pellets.

The second discharge pipe 120-2 is connected to the second air supply pipe 125 by a means such as a hose or pipe and the air generated from the air generating device 128 is physically connected to the second air supply pipe 125 To the photoelectric tube (124). The photoelectric tube 124 is a device for detecting a flame, and its performance may be deteriorated by grinding or the like. The air introduced into the photoelectric tube 124 has a function of maintaining the performance of such a detector and solving the problem of the flame detection deterioration.

The third discharge pipe 120-3 is connected to the third air supply pipe 127 by a means such as a hose or pipe and the air generated from the air generating device 128 is physically connected to the third air supply pipe 127 And has a function of flowing the oil into the oil burner 126. The air introduced into the oil burner 126 has a function of preventing oil sticking or the like and smoothly supplying oil.

As shown in FIG. 7, the first discharge pipe 120-1, the second discharge pipe 120-2, and the third discharge pipe 120-3 have different diameters in the air distributor 120. As described above, since the discharge pipes have different diameters, the air pressures introduced into the fuel supply pipe 135, the photoelectric pipe 124, and the oil burner 126 can be different from each other. Of course, the pressure of the air introduced into the fuel supply pipe 135, the photoelectric pipe 124 and the oil burner 126 may be basically different depending on the control of the air generation device 128. However, A configuration for controlling the change in the diameter of the discharge pipe, and the like.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. It should be interpreted as a concept. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that there are water and modifications.

100 .............................. Boiler
110 .............................. Fuel storage device
120 .............................. Air distributor
120-1 ... First outlet
120-2 ............................ Second discharge pipe
120-3 ............................ Third discharge pipe
123 ...................... First air supply pipe
125 ...................... Second air supply pipe
127 .............................. Third air supply pipe
128 .............................. Air generation device
130 .............................. Fuel transfer device
133 .............................. Air guide
135 .............................. Fuel supply pipe
140 .............................. Combustion chamber
160 .............................. motor
165 .............................. Chain gear

Claims (6)

A fuel storage device for storing fuel;
A fuel transfer device for transferring the fuel provided from the fuel storage device; And
And a fuel supply pipe for guiding the fuel transferred from the fuel transfer device to the combustion chamber,
Wherein the fuel supply pipe has one end connected to the combustion chamber and the other end connected to the fuel transfer device spaced apart from the combustion chamber so that the fuel transferred from the fuel transfer device is supplied to the combustion chamber through the fuel supply pipe The pellet boiler being. The method according to claim 1,
And an air supply pipe for injecting air into the fuel supply pipe,
And the air supply pipe is connected to the other end of the fuel supply pipe connected to the fuel transfer device. 3. The method of claim 2,
An air generation device for generating air to be supplied to the air supply pipe; And
Further comprising an air distributor for separating and supplying the flow of the air generated and supplied from the air generating device to different positions. The method of claim 3,
Wherein the air distributor includes a plurality of discharge pipes for discharging respective separated flows of air,
Wherein one of the plurality of discharge pipes is physically connected to the air supply pipe and air supplied from any one of the plurality of discharge pipes is injected into the fuel supply pipe via the air supply pipe. 5. The method of claim 4,
Wherein the other one of the plurality of discharge pipes is connected to an oil burner and the other one of the plurality of discharge pipes is connected to a flame detector for detecting a flame in the combustion chamber. 3. The method of claim 2,
And an air guide for guiding the flow of air injected from the air supply pipe in a specific direction to the other end of the fuel supply pipe provided with the air supply pipe.
KR1020130045052A 2013-04-23 2013-04-23 Pellet boiler KR20140126634A (en)

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KR1020130045052A KR20140126634A (en) 2013-04-23 2013-04-23 Pellet boiler

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101894374B1 (en) * 2018-04-11 2018-09-04 강용훈 A device for heating of vinyl house using oil indirect heating mode

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101894374B1 (en) * 2018-04-11 2018-09-04 강용훈 A device for heating of vinyl house using oil indirect heating mode

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