WO2012173363A2

WO2012173363A2 - Firewood combustion device, and hot air blower and hot water boiler apparatus using same

Info

Publication number: WO2012173363A2
Application number: PCT/KR2012/004617
Authority: WO
Inventors: 신용복
Original assignee: Shin Yong Bok
Priority date: 2011-06-13
Filing date: 2012-06-12
Publication date: 2012-12-20
Also published as: KR20120137769A; WO2012173363A3

Abstract

The present invention relates to a firewood combustion device using firewood as a fuel, and to a hot air blower and a hot water boiler apparatus using same, and more specifically, a combustion device comprising of itself a heater using buoyancy that is generated when combusting the firewood, and a hot water boiler comprising same by covering the combustion device with a blister. In addition, the hot air blower is comprised by installing a heat exchanger on the combustion device.

Description

Firewood burner and hot air heater and hot water boiler device

The present invention relates to a combustion apparatus using firewood as a fuel, and a hot air heater and a hot water boiler apparatus using the same. Specifically, the present invention uses a buoyancy generated during combustion of a firewood to construct a combustion apparatus that becomes a stove by itself, and puts a blister on the combustion apparatus to form a hot water boiler. In addition, a heat exchanger is provided in the combustion device to form a hot air fan.

Combustion gas produced by the combustion of a substance is increased in volume and lighter, thus giving rise to buoyancy. This buoyancy increases the combustion gas, and the continuously generated buoyancy of the combustion gas serves to push the exhaust gas forward and smoothly supply oxygen to the fuel.

Restricting the flow of combustion gas to a specific passage and leaving room for the heat to rise sufficiently makes this flow smoother, and in a rapid combustion with sparks, a stronger flow appears.

Since the 1980s, combustors using these principles have begun to be developed. Rocket Stoves have been developed for cooking and cooking, and Rocket Mass Heaters have been developed for heating.

The rocket stove is a mobile or stationary stove, which makes a tube-shaped space bent in an L-shape to burn fuel at the bottom and to use cooking heat for cooking and cooking at the top.

The rocket mass heater is a heating device using firewood. In the case of the rocket stove, cookware is located at the upper part, but in the rocket mass heater, a heating part (usually a drum barrel) is placed instead of the cookware, and the year is passed between heat storage materials such as mud and stone. The heat storage heating is also possible by passing through.

The rocket mass heater has to use most of the heat for air heating, in this case, the main body should be placed indoors, there was a great difficulty in miniaturization or enlargement. In addition, various materials such as drums, gas cylinders, bricks, mud, pearlite, etc. are used, which makes the construction very difficult due to the complicated structure, and it is not easy to convert, move, store and use heat, and it is difficult to accumulate the heating water. For this reason, the industrialization of a rocket mass heater is difficult.

In the conventional firewood combustion stove and boiler by inserting a plurality of firewood at once, a plurality of firewood is entangled and burned, incomplete combustion occurs, the waste of firewood and heat due to such incomplete combustion.

In addition, in the conventional stove boiler, it was not possible to select and burn various wood fuels such as sawdust, pellets, wood chips (crushed wood) as well as firewood as needed.

The present invention is to solve these problems, and to make a wood burning device with good efficiency with a simple structure.

The present invention is to construct a combustion apparatus that becomes a stove by itself using buoyancy generated when burning firewood, and to construct a hot water boiler by blistering the combustion apparatus.

According to one embodiment of the invention, the fuel inlet (1); Combustion furnace 2; Outlet 7 connected to the communication; Vertical combustion furnace 3; Upper year (4); Fall year (5); And a combustor comprising a lower flue (6), wherein the fuel inlet (1) is a vertical hollow tube with an open top, and a lower part connected with the combustion furnace (2), the combustion furnace (2) Is a horizontally extending hollow tube connecting the fuel inlet (1) and the vertical combustion furnace (3), the height of the vertical combustion furnace (3) is higher than the height of the fuel inlet the combustion furnace (2) A hollow tube extending vertically from the upper flue (4) is a horizontally extending hollow tube connecting the vertical combustion furnace (3) and the falling flue (5), the falling flue (5) Is a vertically extending hollow tube connecting the lower flue 6 from the upper flue 4, the lower flue 6 connecting the falling flue 5 and the outlet 7, Disclosed is a fire burning apparatus, which is a tube extending horizontally.

According to a further embodiment of the present invention, a hot water boiler is disclosed, in which the entire combustion from the combustor to the lower flue is blistered.

According to a further embodiment of the present invention, in the coal fired combustion apparatus, the entire furnace from the combustion furnace to the lower flue is surrounded by a case, an inlet for ventilation air is installed around the lower flue, and an outlet of the ventilation air is installed around the combustion furnace. And, a hot air blower, which makes the warm air by flowing the air to the blower is disclosed.

According to the firewood combustion apparatus of the present invention, various wood fuels such as sawdust, pellets, wood chips (crushed wood) can be selected and combusted as needed, and the problem of conventional incomplete combustion can be solved. It is possible to obtain a simple and efficient wood burning device.

1 shows a cross-sectional view of a schematic concept of a firewood burning apparatus according to an embodiment of the present invention.

2 is a cross-sectional view of a schematic concept for explaining a configuration ratio of a firewood burning apparatus according to an embodiment of the present invention. For convenience, the diameter (A) of the fuel inlet and the furnace is the same, and the value is defined as the square root of the cross section of the furnace. In addition, the other parts except for the height B of the fuel inlet and the diameter A of the combustion furnace are not clearly partitioned, so they are regarded as the length from each center line to the center line.

Figure 3a is a vertical cross-sectional view of a schematic concept of a hot water boiler device made by blistering a firewood burner, using the firewood burner of the present invention, Figure 3b is a schematic concept of a hot water boiler according to an embodiment of the present invention A top view of the is shown. In the drawings it is shown in the form bent twice to reduce the installation area. In FIG. 3B, the gray arrows indicate the horizontal flow of the combustion gas, and the gray dots and the scissor marks indicate the combustion gas up and down, respectively.

Figure 4 is a schematic diagram showing the flow of circulating water in the hot water boiler apparatus according to the present invention.

5 is a cross-sectional view of a schematic concept of a forced circulation hot water boiler or a hot air fan composed of a combustion device in which combustion gas rises and falls twice.

Figures 6a-6c shows an example of a cradle for the fuel of the firewood combustion apparatus according to the present invention, and a combustion bin for combustion of sawdust, pellets, wood chips and the like.

1. Description of firewood burner

1 shows a cross-sectional view of a schematic concept of a firewood burning device. As shown in FIG. 1, the firewood combustion apparatus according to an embodiment of the present invention includes a fuel inlet 1 for injecting fuel, a combustion furnace 2, and an outlet 7 connected to communication. On the other hand, the combustion furnace to the discharge port is connected to the vertical combustion furnace (3), the upper flue (4), the falling flue (5), and the lower flue (6). The combustion member receiver 20 and the discharge member receiver 21 may be connected to the combustion furnace and the lower part of the lower flue through a plurality of holes, respectively. In the embodiment shown in Figures 1 and 2 it is configured as a draw back. In the illustrated embodiment, the inlet, the outlet, the year, etc. are all configured in the same cross-sectional area for convenience.

In this case, by forming the shape of the fuel inlet (1) with a constant height in the form of open up as shown in Figure 1, it is possible to put the firewood upright. This allows the burning point to be concentrated at the lower end of the firewood, and the firewood can be burned into the furnace automatically by gravity.

In this case, as shown in Figure 6a, a cradle for mounting the firewood can be used. When the long length of firewood is erected by the cradle, the firewood can be prevented from escaping from the fuel inlet 1.

On the other hand, instead of firewood, sawdust, pellets, wood chips and the like may be used as fuel, and when these materials are used, the cradle is broad and narrow, for example in the form of funnels, as shown in Figure 6b. Can be used.

In this case, as shown in FIG. 6C, a part of the porous material such as a perforated plate and a wire mesh is configured to insert a combustion cylinder in which combustion and ash are discharged simultaneously, and then open and vent the ventilation control plate 8. The combustion cylinder may be formed in a shape in which the lower portion thereof is narrowed down to reach the lower portion of the combustion furnace so that combustion may be performed at the lower portion of the fuel layer.

The shape of the cradle and the combustion cylinder may be any of a variety of shapes as long as the fuel is mounted to allow combustion, and the cradle and the combustion cylinder of the present invention have been described and illustrated by way of example.

The combustion furnace structure of the firewood combustion apparatus of the present invention has a sharp angle and has a shape bent in an L-shape, whereby cold and heavy air is sucked into the inlet of the low combustion furnace, and hot and light heat in the combustion process causes the vertical combustion furnace. As a result, it is suddenly pushed up.

The combustion gas passing through the vertical combustion furnace receives discharge resistance as it passes through the upper flue and the falling flue, exhausting heat and kinetic energy, and is discharged in communication through the lower flue and the discharge port. This flow continues while firing while fuel is being supplied.

As shown in Figure 2, the numerical value of each part can be determined as follows. The flow of heat and heat caused by the combustion of the firewood combustion apparatus according to the change of the height (D) of the vertical combustion furnace, the length of the combustion furnace (C), the length of the falling flue (F), and the height of the fuel inlet (B). Losses, recovery of heat, etc. are affected. For example, longer furnaces reduce heat flow and increase heat losses in the furnace. If the height of the vertical furnace rises, the heat flow will be faster to some extent. If the height of the firewood inlet is relatively high compared to the height of the vertical furnace, the smoke can flow back.

The height B of the fuel inlet is the height from the bottom of the furnace to the fuel inlet, which has a minimum height for installing the cradle and is preferably kept as low as possible. The length (C) of the furnace is the distance from the fuel inlet to the vertical furnace, which should be as short as possible to prevent heat loss and increase the heat to the heat exchanger. When the value of B and C is 0, that is, when combustion proceeds at the bottom of the vertical combustion furnace, combustion is most active. However, in the present invention, combustion is performed for installation of a cradle (and a combustion tank) for automatic supply of fuel. It is an extension of the furnace.

On the other hand, the height D of the vertical combustion furnace is preferably 2 to 10 times the diameter of the combustion furnace, which is the highest in thermal efficiency. Depending on the type of fuel and the combustion method, if the height of the vertical combustion furnace is too low, the flame will reach the lower flue after passing the upper flue and falling flue, and the temperature of the exhaust gas discharged through the flue will be kept high and the heat will be recovered smoothly. If it is too high, the exhaust gas is cooled while passing through the vertical furnace so that it does not have sufficient buoyancy and thus the combustion is inactive.

Falling year is a place to help the recovery of heat by delaying the flow of the combustion gas, the length (F) is preferably formed to be similar to the length (D) of the vertical combustion furnace, if too short combustion is active but heat recovery is not smooth. If it is too long, the air suction force of the combustion unit is weak and combustion is not good.

The upper and lower fluctuations change the direction of combustion gas flow and aid in the recovery of heat, and their lengths (E and G) do not significantly affect the combustion process.

On the other hand, it is desirable that the fuel inlet, the combustion furnace, and the entire year leading to the outlet maintain a similar cross-sectional area, and there should not be a bottleneck that obstructs the flow of the combustion gas, and particularly, the cross section is sharply reduced at the communication part connected to the outlet. Should not be. In natural combustion, it is preferable to keep the fuel inlet and the furnace in the same or smaller cross-sectional area than the outlet. This is because the larger the cross-sectional area, the slower the flow rate and the less air supply.

The most important factor for determining the calorific value of the firewood combustion apparatus of the present invention is the value of the cross-sectional area associated with the diameter of the combustion furnace, and various combustion apparatuses having various large, medium and small calories may be configured according to the size of the cross-sectional area. .

In addition, although the system is discharged through one rise and fall from the combustion furnace in FIG. 1 is shown, as shown in FIG. 5, the number of such rises and falls may be two or more times.

The exhaust gas discharger 50 may be installed at the upper end of the communication, and the discharger 50 is generally used when rising and falling more than two times as shown in FIG. 5 (see FIG. 5). As a result, the exhaust gas can be smoothly discharged, whereby the combustion flow can be well achieved.

In the firewood burning apparatus of the present invention, heat dissipation plates may be attached to all or part of both surfaces or one side of the heat transfer surface to increase the heat transfer area to increase heat transfer efficiency. In addition, it is preferable to lay a heat insulating material 70 on the floor to prevent unnecessary loss of heat. In addition, although not shown in the drawing, it is possible to further increase the combustion efficiency by making a secondary air inlet in the vertical combustion furnace.

The firewood burner of the present invention may be used as a stove by itself, in which case additional safety devices, convenience devices, heat treatment and the like may be required.

2. Description of boiler device using firewood combustion device

By using the above-described firewood burner, the firewood burner can be blistered to configure a hot water boiler device.

As shown in Figs. 3A-3B, blisters are formed in the vertical combustion furnace, around the upper flue, the falling flue, and also in the combustion furnace and a part of the lower flue, and the blister corresponds to the region of the dashed line. Although not shown in the drawings, it is preferable that such blisters are formed in a form that surrounds the heat insulating material around them. In addition, it is preferable to increase the combustion efficiency by heat-insulating the exposed part of the apparatus, especially the vicinity of the furnace with a heat insulator, and to close and insulate the ventilation control plate 8 when combustion starts when firewood is used as fuel.

On the other hand, the blister may be divided into a primary heat exchange portion and a secondary heat exchange portion, and may form a circulation passage 20 of water connected therebetween, whereby water is between the primary heat exchange portion and the secondary heat exchange portion. It is mobile.

As shown in FIG. 3A, the cold water is introduced through the inlet 30, and heated by operating the fire burning apparatus to become hot water, and the hot water may flow out through the outlet 40. The inlet of the cold water flows in at the end of the year with the lowest temperature, convection into the part of the high temperature due to the convection of the water according to the temperature difference, and is continuously heated in the process and flows out through the outlet 40 to the hot water. The water will flow out in a circulating manner. At this time, the temperature of the heat transfer surface is the highest in the combustion furnace where the fuel is combusted, and then sequentially down to the discharge part, and the water flows in the opposite direction, thereby recovering a lot of heat by lowering the temperature of the inlet through which the cold water is obtained. By withdrawing from the upper part or upper flue it is possible to increase the combustion efficiency by maintaining a relatively high temperature of the furnace.

In addition, in the forced circulation boiler, a configuration may be used in which a circulating water is circulated from the secondary (higher) heat exchange part to the primary (lower) heat exchange part by forming a passage in the same manner as shown in FIG. 4, and FIG. 5. As in the above, the circulation path may be formed parallel to the year surface.

On the other hand, in the boiler of the present invention, in order to improve the heat conversion efficiency, the heat sink may be attached to all or part of both or one side of the heat transfer surface, and since the firewood boiler is not easy to start and stop, it is necessary to install a separate heat storage tank. Can be.

3. Description of warmer fan using firewood burner

As shown in FIG. 5, a heat exchange chamber is formed by enclosing an entire year from a combustion furnace to a lower flue in a case of a coal fired combustion apparatus, and divided into a primary heat exchange part and a secondary heat exchange part using a partition, and the like. An air flow path may be formed at a meeting portion, a ventilator may be installed at a lower flue portion, and an outlet may be installed at a combustion furnace portion to flow air through a blower to create warm air.

The hot air fan can be made by heating the air by the heat of the wood burning device using a case in which air communicates instead of a blister for making a boiler. At this time, the heat conversion plate may be attached to all or part of both surfaces or one side of the heat transfer surface to increase the heat conversion efficiency.

The present invention is not limited to the above-described drawings and the illustrated firewood boiler apparatus and the example of a hot air heater and a boiler using the same, but may be variously modified within the scope of the claims and objects of the present invention.

Claims

A fuel inlet 1; Combustion furnace 2; Outlet 7 connected to the communication; Vertical combustion furnace 3; Upper year (4); Fall year (5); And a firewood combustion device comprising a lower flue (6),

The fuel inlet (1) is a vertical hollow tube with an open top, the bottom is connected to the combustion furnace (2),

The combustion furnace (2) is a horizontally extending hollow tube connecting the fuel inlet (1) and the vertical combustion furnace (3),

The height of the vertical combustion furnace (3) is a hollow tube extending vertically from the combustion furnace (2) higher than the height of the fuel inlet,

The upper flue (4) is a horizontally extending hollow tube connecting the vertical combustion furnace (3) and the falling flue (5),

The falling flue (5) is a vertically extending hollow tube connecting the lower flue (6) from the upper flue (4),

The lower flue 6 is a horizontally extending pipe connecting the falling flue 5 and the outlet 7,

Firewood burner.
In the wood burning apparatus according to claim 1, the entire flue from the combustion furnace to the lower flue is surrounded by blisters,

Install an inlet for water around the lower flue, install an outlet for water around the furnace or above the upper flue,

Providing hot water by circulating water from the inlet to the outlet,

Hot water boiler.
In the firewood combustion device according to claim 1, a heat exchange chamber is formed by enclosing the whole flue from the combustion furnace to the lower flue with a case.

An inlet of ventilated air is installed around the lower flue, an outlet of ventilated air is installed around the combustion furnace, and a warm air is made by flowing air through a blower to create warm air.