KR101324474B1 - Firewood boiler of upward and downward firing construction - Google Patents

Abstract

The present invention is a boiler having a hot water tank (15) and a heating water pipe (16) to burn a firewood: an upper chamber (21) for accommodating the firewood and a lower chamber (22) for the lower combustion flue gas chamber (23). The bottom vent 36 formed in the bottom surface of the upper chamber 21 is formed in communication with the rear vent hole 35 formed in the rear of the upper chamber 21 and the flow passage cross-sectional area larger than the rear vent hole (35). A main body 10 provided; The air supply board 32 which interlocks with the operation of the fan motor 31 on the door 11 of the upper chamber 21 to open and close the flow path, and the fan motor 31 and the air supply board 32 are always downstream. Air supply means having an air supply regulator 60 formed to change the air supply amount to be supplied; Doors 12 and 13 formed in the lower chamber 22 and the flue gas chamber 23, respectively; The exhaust plate 41 and the exhaust plate having a clearance between the wall surface of the flue gas chamber 23 and the wing plate 43 at the lower portion of the flue 26 of the flue gas chamber 23 and having the through hole 41-1 ( 41 is composed of a drain plate 42 inclined to the slope and a wing plate 43 extending perpendicular to the side of the drain plate 42 to prevent the discharge of dust contained in the exhaust gas discharged to the flue 26 and the flue A baffle plate 40 for discharging the water dropped by cooling at 26; And a controller 50 for controlling the operation of the fan motor 31 and the temperature of the hot water and the heating water.
Accordingly, by adjusting the combustion state to match the combustion characteristics of the firewood, it is possible to implement the complete combustion to improve the thermal efficiency as well as safety and cleanliness against explosion.

Description

Firewood boiler of upward and downward firing construction

The present invention relates to a firewood boiler of the vertical combustion method, more specifically, by adjusting the combustion state to match the combustion characteristics of the firewood, by realizing the complete combustion up and down to improve the thermal efficiency and safety and cleanliness against explosion The present invention relates to a combustion type firewood boiler.

Conventional firewood boilers are used for putting local firewood and providing local heating or hot water, and generally adopt unregulated methods until the firewood is burned out. Low utilization for phosphorus heating and hot water. In the future, considering the demand for firewood boilers, ranging from farms to high-end homes, it is urgent to make technological improvements to improve efficiency. As a related patent, "functional firewood boiler" of Korean Patent Publication No. 1057398, "firewood boiler" of Korean Patent Publication No. 0983237 are known.

Korean Patent Publication No. 1057398 is a wood boiler composed of a combustion chamber, a water storage unit, a heat exchange unit, and an exhaust pipe, comprising: an open / close door and a boiler housing formed of a combustion chamber; A water tank filled with water in the boiler housing and heated by combustion heat; An exhaust pipe connected to the combustion chamber of the boiler housing and arranged in a coil shape so that heat exchange is performed when exhausting the combustion gas; The exhaust pipe is formed inside the exhaust pipe to form a stack of perforated plates to delay heat dissipation as much as possible, and constitutes a circulation pump, a temperature sensor, and an automatic pressure discharge valve. We propose a close configuration by winding the pipe.

Korean Patent Publication No. 0983237 is a firewood boiler including a housing, a brazier, a furnace opening door, a flue, and a circulation pump, which is installed at a lower portion of the furnace opening door and communicates with the furnace, on one side of the air inlet duct. A duct automatic switchgear arranged to open and close a duct according to a water temperature change in the water chamber, a first temperature switch connected to the duct automatic switchgear and measuring the water temperature in the water chamber, and connected to the circulation pump to supply a water temperature in the water chamber. It is proposed a configuration including a second temperature switch to measure or to drive or stop the circulation pump in accordance with the change in temperature.

The former can use general wood and waste wood, expect the effect of minimizing the generation of contaminants such as soot, smoke, wood vinegar, etc. The latter prevents the complete combustion in a short time by allowing the natural air to flow only when necessary Expect to reduce fuel consumption. However, it is difficult to expect complete combustion in the same manner as in the above-described patent, and thus shows a limitation in improving thermal efficiency, and when used for heating and hot water use, there is insufficient response due to a sudden load change and a high risk of dust explosion.

An object of the present invention for improving the conventional problems as described above, the upper and lower combustion to improve the thermal efficiency as well as safety and cleanliness against explosion by realizing the complete combustion while adjusting the combustion state to match the combustion characteristics of the firewood It is to provide a firewood boiler of the type.

In order to achieve the above object, the present invention is a boiler having a hot water tank and a heating water pipe to burn the firewood: the upper chamber for accommodating the firewood and the lower chamber for the lower combustion is formed in communication with the flue chamber, the rear of the upper chamber A main body having a bottom vent formed on the bottom surface of the upper chamber, the back vent formed in the upper passage section being larger than the rear vent; An air supply means having an air supply plate interlocked with the operation of the fan motor on the door of the upper chamber, and an air supply control unit configured to change an air supply amount constantly supplied downstream of the fan motor and the air supply plate; Doors respectively formed in the lower chamber and the exhaust chamber; It is installed to have a gap between the wall of the flue chamber and the wing plate in the flue of the flue chamber, the exhaust plate having a through hole, a drain plate extending inclined to the exhaust plate and a wing plate extending perpendicular to the side of the drain plate Baffle plate to prevent the discharge of dust contained in the exhaust gas discharged to the discharged water to cool down in the flue; And a controller for controlling the operation of the fan motor and the temperature of the hot water and the heating water.

In addition, according to the present invention is characterized in that the upper chamber of the main body maintains a flow path cross-sectional area of 15 to 25%: 75 to 85% through the vent of the rear and the vent of the bottom.

In addition, according to the present invention, the lower chamber of the main body is provided with an auxiliary air supply mechanism for promoting combustion and a monitoring window for checking an internal state on the door.

In addition, according to the present invention, the air supply means is characterized in that it comprises an air supply regulator for varying the amount of constant air supply downstream of the fan motor and the air supply plate.

In addition, the baffle plate according to the invention is characterized in that it comprises an exhaust plate having a through-hole in a vertical plane, a drain plate extending inclined to the exhaust plate, a wing plate extending perpendicular to the side of the drain plate.

In addition, according to the present invention, the main body is characterized in that it comprises a controller to prevent re-ignition within a set time immediately after the fan motor is stopped while intermittently controlling the fan motor to maintain the hot water supply or water supply temperature in the set value range.

As described above, according to the present invention, the combustion state is adjusted to match the combustion characteristics of the firewood, thereby realizing complete combustion, thereby improving thermal efficiency as well as safety and cleanliness against explosion.

1 is a perspective view showing the appearance of a firewood boiler according to the present invention
2 is a cross-sectional view showing the internal configuration of the firewood boiler according to the present invention
3 is a perspective view showing a baffle plate of a firewood boiler according to the present invention;

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

It is to be noted that the present invention can refer to a prior art boiler filed on December 20, 2010 (No. 2010-130596) filed by the present applicant.

The present invention relates to a boiler having a hot water supply tank 15 and a heating water pipe 16, and mainly burning firewood. The hot water tank 15 is configured on the outer surface of the main body 10 of the firewood boiler, and the heating water pipe 16 in the form of a coil is formed inside the main body 10. Of course, a cold water pipe, a hot water pipe, a supplemental water pipe is connected to the hot water supply tank 15, and the water outlet pipe and the water inlet pipe are connected to both ends of the heating water pipe 16. Hot water supply tank 15 is for hot water and the heating water pipe 16 is for heating, but is not necessarily limited thereto. The firewood boiler's combustion target (fuel) is mainly firewood, but may include general miscellaneous or other combustible waste.

The main body 10 according to the present invention has a structure in which the upper chamber 21 accommodating the firewood and the lower chamber 22 for the lower combustion communicate with the flue gas chamber 23. An air vent 35 is installed at the rear of the upper chamber 21, and an air vent 36 for supporting firewood is installed at the bottom. The lower chamber 22 located below the upper chamber 21 is joined at the rear of the upper chamber 21 and communicates with the flue gas chamber 23 and the flue 26 upwards. Of course, the upper chamber 21, the lower chamber 22, the flue gas chamber 23 is all surrounded by the hot water supply tank 15, the outer surface of the hot water supply tank 15 is provided with a heat insulating material for preventing heat loss and burns. The upper chamber 21, the lower chamber 22, and the flue gas chamber 23 are opened and closed by respective doors 11, 12, 13.

At this time, the upper chamber 21 of the main body 10 may maintain a flow path cross-sectional area of 15 to 25%: 75 to 85% through the rear vent 35 on the back and the bottom vent 36 on the bottom. In this way, the fuel blocks the bottom vent 36 at the beginning of combustion, and the flow path of about 80% is opened to the rear vent 35, but when the normal combustion state is reached, the flow path of the bottom vent 36 is approximately 80%. Is open enough. This is the optimal condition for the firewood to achieve complete combustion while simultaneously undergoing both upstream and downstream combustion. If the flow path of the vents 35 and 36 is out of the appropriate range, complete combustion is difficult or the thermal efficiency is drastically lowered depending on the combustion object. In the case of the conventional firewood boiler that relies only on the upstream combustion of the firewood, the temperature of the hot water supply tank 15 is stratified by non-uniform heating in the vertical direction.

On the other hand, the lower chamber 22 of the main body 10 may be provided on the door 12 with a secondary air supply mechanism 33 for promoting combustion and a monitoring window for checking the internal state. The auxiliary air supply unit 33 supplies air by connecting a separate pipe (not shown) to the flow path of the fan motor 31 and supplies air through the air vent 36 at the bottom when fuel is excessively input or the combustion condition is poor. Additionally. The monitoring window is used for visually observing the amount of ash accumulated in the lower chamber 22 from the outside. It is necessary to remove the ash accumulated in the lower chamber 22 from time to time to secure the flow path.

In addition, according to the present invention, a fan motor 31 is provided on the door 11 of the upper chamber 21, and an air supply means including an air supply plate 32 interlocked with the operation of the fan motor 31 is employed. It is a structure. The above-mentioned patent of the present applicant may be referred to as forming the flow path in the door 11 and installing the fan motor 31 and the air supply plate 32. The air supply plate 32 is a method of opening the flow path by air pressure when the fan motor 31 is operated, and closing the flow path by its own weight when the fan motor 31 is stopped. This approach is an important factor in improving thermal efficiency and safety, as well as maintaining operational reliability in dusty coal fired boilers, given the characteristics of fire fuels with slow combustion control.

At this time, the air supply means is preferably provided with a air supply regulator (60) for varying the amount of constant air supply downstream of the fan motor 31 and the air supply plate (32). The air supply regulator 60 adopts a structure in which the air supply amount is constantly changed by the blocking plate 64 rotatably installed through the adjustment shaft 66 on the plurality of through holes 62. This provides a certain amount of air supply even when the fan motor 31 is stopped and the air supply plate 32 is closed so that wood liquor is not generated from the fuel. This is because wood grass liquor generated during the burning of firewood accumulates inside, generating pollutants and promoting corrosion. The air supply amount by the air supply regulator 60 is adjusted according to the kind and quantity of fuel.

In addition, according to the present invention includes a baffle plate (40) installed on the flue gas chamber 23 for filtering dust and water. The baffle plate 40 is installed in the downward flow path of the flue 26 at the downstream end of the flue gas chamber 23 to prevent the burned gas from being directly discharged into the flue 26 in a state containing dust and water.

At this time, the baffle plate 40 is an exhaust plate 41 having a through-hole 41-1 in the vertical plane, drain plate 42 inclined to the exhaust plate 41, wing plate extending perpendicular to the side of the drain plate 42 43 is provided. The exhaust plate 41 is similar in size to the passage cross-sectional area of the flue gas chamber 23 and has a plurality of through holes 41-1. Drain plate 42 is installed to be inclined so that the flow of water is smooth, it may be of a cross-sectional structure. The wing plate 43 extends to maintain a constant clearance with the wall surface of the flue gas chamber 23. Accordingly, the combustion gas discharged through the vents 35 and 36 passes through the through hole 41-1 of the exhaust plate 41, the lower part of the drain plate 42, and the wall surface of the wing plate 43 and the flue gas chamber 23. While passing through the gap between the dust containing embers in contact with the exhaust plate 40 to be accumulated on the flue chamber (23) to prevent the external discharge of dust, only clean gas is discharged to the flue (26). In addition, the water cooled and dropped in the flue 26 comes down to the drain plate 42 and is discharged to the external drain pipe 48. Of course, the baffle plate 40 preferably applies different dimensions of the exhaust plate 41, the drain plate 42, and the wing plate 43 according to the capacity of the boiler, the type of fuel, and the like.

On the other hand, the main body 10 is provided with a controller 50 to prevent re-ignition within a set time immediately after the fan motor 31 is stopped while intermittently controlling the fan motor 31 to maintain the hot water supply or water supply temperature in the set value range. It is good. The controller 50 includes a first temperature switch 52, a second temperature switch 54, and a timer 56, and may be installed on the main body 10 or may use a separate remote controller. As an example of the controller 50, the first temperature switch 52 sets the operation start temperature of the fan motor 31, the second temperature switch 54 sets the operation stop temperature of the fan motor 31, The timer 56 sets the re-ignition waiting time.

In addition, the controller 50 is equipped with a screen for displaying the boiler temperature, room temperature, temperature setting, time setting, time control to control according to the set time, temperature control to control according to the set temperature, basic temperature when going out for a long time It performs functions such as going out control.

In one example of operation, the hot water or heating water stops the fan motor 31 when it reaches the set temperature of the second temperature switch 54 at 80 ° C., and when the set temperature of the first temperature switch 52 reaches 77 ° C. The fan motor 31 is operated again, and after the fan motor 31 stops operating, re-ignition is blocked for 5 minutes to prevent dust explosion. Even if a sudden hot water supply or heating load occurs, even if the water temperature drops sharply, the state is uniformly heated and the thermal efficiency is high by vertical combustion, thereby maintaining a stable state. In winter, when the temperature of the heating water reaches 5 ° C or less, the circulation pump is repeated for 3 minutes and 27 minutes.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

10: main body 11, 12, 13: door
15: hot water tank 16: heating water pipe
21: upper chamber 22: lower chamber
23: exhaust chamber 31: fan motor
32: supply board 33: auxiliary supply mechanism
35, 36: rear and bottom vents 40: baffle plate
41: exhaust plate 42: drain plate
50: controller 52, 54: temperature switch
56: timer 60: supply regulator

Claims (6)

In a boiler having a hot water tank (15) and a heating water pipe (16), burning firewood:
The upper chamber 21 for accommodating the firewood and the lower chamber 22 for the lower combustion are formed in communication with the flue gas chamber 23, the rear vent 35 and the rear surface formed on the rear of the upper chamber 21 A main body (10) having a bottom vent (36) formed on a bottom surface of the upper chamber (21) formed of a passage section larger than the vent (35);
The air supply board 32 which interlocks with the operation of the fan motor 31 on the door 11 of the upper chamber 21 to open and close the flow path, and the fan motor 31 and the air supply board 32 are always downstream. Air supply means having an air supply regulator 60 formed to change the air supply amount to be supplied;
Doors 12 and 13 formed in the lower chamber 22 and the flue gas chamber 23, respectively;
The exhaust plate 41 and the exhaust plate having a clearance between the wall surface of the flue gas chamber 23 and the wing plate 43 at the lower portion of the flue 26 of the flue gas chamber 23 and having the through hole 41-1 ( 41 is composed of a drain plate 42 inclined to extend inclined to and a wing plate 43 extending perpendicular to the side of the drain plate 42 to prevent the discharge of dust contained in the exhaust gas discharged to the flue 26 and the flue A baffle plate 40 for discharging the water dropped by cooling at 26; And
Up and down combustion type firewood boiler, characterized in that it comprises a; controller for controlling the operation of the fan motor (31) and the temperature of hot water and heating water. The method of claim 1,
The upper and lower combustion passages of the upper chamber 21 of the main body 10, the flow path cross-sectional area of the bottom vent 36 is 15 to 25%: 75 to 85% of the firewood boiler of the vertical combustion method. The method of claim 1,
The lower chamber 22 of the main body 10 has an auxiliary supply mechanism 33 for promoting combustion and a monitoring window for checking an internal state on the door 12. Boiler. delete delete The method of claim 1,
The controller 50 is a controller 50 for preventing re-ignition within a set time immediately after the fan motor 31 is stopped while intermittently controlling the fan motor 31 to maintain the hot water supply or water supply temperature in a set value range. Vertical combustion boiler.

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