KR101271748B1 - Pellet stove - Google Patents

Abstract

PURPOSE: A pellet stove is provided to obtain safety by extinguishing pellet fuel in a furnace if an opening and closing door is opened and to easily remove ashes generated by combusting the pellet fuel in the furnace. CONSTITUTION: A pellet stove comprises a flame sensor(S) sensing a flame generated by igniting pellet fuel in the adjacent position of a furnace. The flame sensor is connected to a control unit sending a signal to stop operation of an ignition device(40) when the ignition of the pellet fuel is completed. An air inhalation member(70) is installed to one lower side of a stove main body. An air inhalation chamber(74) in which an inhalation fan(73) is installed is installed to the end portion of an air inhalation channel(71). The inhalation fan is interlocked with the operation of a motor(72) and generates an inhalation force of the air inhalation channel. A cooling fan(75) preventing heat from delivering to the motor is installed to an upper part of the inhalation fan.

Description

Pellet Stove {PELLET STOVE}

According to the present invention, the ignition of the pellet fuel supplied from the hopper to the furnace is automatically ignited by the ignition device, and when the ignition is made, the operation of the ignition device is automatically stopped, and the opening and closing of the pellet fuel is extinguished. The present invention relates to a pellet stove which ensures stability.

In general, the use of heating devices increases rapidly during the winter season. In the houses, restaurants, offices, factories, etc., heating devices are used to heat indoor spaces, and in rural areas, heating facilities are provided for facilities for growing crops or raising livestock. do.

Such a heating device is to use a stove or a hot air heater, the existing stove or a hot air fan is the majority of the electricity, gas, briquettes, oil is used as fuel.

However, in the case of using electricity, gas, briquettes and oil as fuels, there is an advantage in that it is easy to manage the supply and storage of fuels, but the fuel itself is expensive, and the consumption of fuels during combustion is considerable, resulting in high heating costs. There was a problem that was aggravated, and the cost was considerable.

In addition, particularly when using briquettes and oil as fuel contains a large amount of chemical harmful substances in the combustion gas discharged during the combustion process, there is a concern that human damage and environmental pollution due to chemical harmful substances.

Therefore, in recent years, the trend of using as a heating fuel using natural fuel which can be easily obtained at low cost in the surrounding area is rapidly increasing, and wastes such as bark and sawdust such as thin trees are crushed and compressed and molded into a cylindrical shape. Wood pellets are one of them.

However, in the case of pellet stove, since the heat exchange is performed between the hot combustion gas and the air sucked from the outside, the heated air is supplied to the room and the combustion gas (smoke) is discharged to the outside. There is a need to improve the problem that heat is emitted to the outside with the combustion gas.

In addition, in order to burn the pellets, the outside air is supplied to the pellet combustion unit provided in the inside of the pellet stove, and the problem that the thermal efficiency of the pellet stove is lowered by the introduction of external cold air also needs improvement.

Therefore, the pellet stove apparatus of the Utility Model 20-2010-0012519 of Figure 1 provided to solve the above problems is provided and looks at the configuration as follows.

 A case 210 having a hopper 240 installed therein and having a space; A pellet combustion unit 220 installed to be opened and closed at one side of the space part and burning pellet fuel; An exhaust pipe (250) installed at the rear of the pellet burner and having one end communicated with an upper portion of the pellet burner and the other end extended to the outside of the case to discharge combustion gas of the pellet burner to the outside; One side of the exhaust pipe is installed in close contact with the exhaust pipe to enable heat exchange, one end of which extends to the hot air outlet 213 provided on the front of the case and the other end of the case is extended to the outside, the air sucked from the outside An air intake pipe 260 for supplying the indoor air through the hot air outlet; And an air suction pipe 233 having one end connected to one side of the pellet combustion unit and the other end extending to the outside of the pellet combustion unit, wherein the end of the air suction tube is formed to surround the outer peripheral surface of the other end of the exhaust pipe.

The exhaust pipe and the air suction pipe extend through the wall to the outside, and a plurality of through holes 233a are formed on an outer circumferential surface of the air suction pipe extending outside to cover one side of the exhaust pipe.

In addition, a plurality of locking plates 251 are protruded in a zigzag form to be spaced apart from each other in the longitudinal direction inside the exhaust pipe, and convective heating is performed by waste heat of the combustion gas on one side of the exhaust pipe extending out of the case. Fan coil unit is installed.

The pellet stove apparatus of FIG. 1 may improve heat exchange efficiency to some extent, but in order to ignite the pellet fuel, it is visually confirmed until the ignition of the pellet fuel by the ignition apparatus is completed. There is a troublesome problem to stop the operation, when opening and closing the door, there is a problem that the harmful gas is discharged into the room as well as the smoke of the combustion unit, and ash generated as the pellet fuel is burned is very difficult to remove it. There was a troublesome problem.

In addition to the problems described above, the conventional pellet stove apparatus is not supplied with oxygen to the combustion unit is not made smoothly, the combustion efficiency of the pellet fuel is reduced, and the heat generated by the combustion gas is exhausted to the exhaust pipe is passed to the exhaust fans exhaust fans, etc. There was a problem that undermines.

The present invention has been invented to solve the problem in view of the above problems, the object is that the ignition of the pellet fuel supplied from the hopper to the furnace is automatically ignited by the ignition device and the ignition device is automatically after the ignition When the door is stopped and opened, the combustion of pellet fuel in the furnace is extinguished to ensure safety, and it provides a pellet stove having a ash tray which can easily receive and remove ash generated from the combustion of pellet combustion in the furnace. have.

The constitution means for solving the problem of the present invention for achieving the above object is to supply the pellet fuel from the hopper of the fuel supply unit in which the pellet fuel is stored in the hearth body having an opening and closing door to the combustion unit through the fuel supply device, The heat generated by burning after ignition by using the ignition device on the pellet fuel supplied to the furnace is heat exchanged in the heat exchange passage with the air supplied by the indoor air supply means and is discharged into the room through the hot air outlet, and the smoke is sucked into the air. In a pellet stove configured to be sucked by means and discharged to the outside through a communication,
A flame detection sensor is installed at an adjacent position of the furnace to detect a flame generated by ignition of the pellet fuel, and the flame detection sensor signals a signal to stop the operation of the ignition device when the pellet fuel ignition of the furnace is completed. It is connected to the sending control unit, and the sensor is installed in the opening and closing door and the sensor is installed in connection with the control unit for sending the operation stop signal of the air suction means to induce the extinguishing of the pellet fuel burned in the furnace at the same time as the opening and closing door, The furnace is seated in a furnace chamber provided larger than the size of the furnace, an oxygen supply passage for supplying oxygen to the furnace is formed on one side of the furnace chamber, the air suction means is installed on one side of the lower body of the furnace body, combustion An air suction path is provided which communicates with each other, and the rear end of the air suction path is interlocked with the operation of the motor. An air suction chamber is installed in which a suction fan for generating suction power to the suction is installed, and a cooling fan is installed at an upper portion of the suction fan to interlock with the operation of the motor to prevent heat transfer to the motor. An insulating plate is installed between the cooling fan and one side of the air suction chamber.

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Pellet furnace of the present invention configured as described above, the ignition of the pellet fuel supplied from the hopper to the furnace is automatically made by the automatic ignition device, the ignition device is automatically stopped after the ignition, and open and close the door When the combustion of the pellet fuel in the furnace is extinguished, it is effective to ensure safety. The ash generated by the combustion of the pellet combustion in the furnace can be easily removed from the ash tray, and the heat discharged with the smoke through the communication. There is an effect that can prevent the loss of the motor by.

1 is a cross-sectional view showing a structure of a conventional pellet stove;
Figure 2 is a perspective view showing the appearance of the pellet stove of the present invention,
3 is a perspective view of a state in which the stove body is removed from the pellet stove of the present invention,
Figure 4 is a cross-sectional view for explaining the internal structure of the pellet stove,
5 is a cross-sectional view showing the configuration of a fuel supply device in a pellet stove of the present invention;
Figure 6 is a cross-sectional view showing the configuration of the combustion unit in the pellet stove of the present invention,
7 is a cross-sectional view showing the configuration of the heat exchange passage in the pellet stove of the present invention,
8 is a cross-sectional view showing the configuration of the air suction means in the pellet stove of the present invention,
9 is a cross-sectional view showing the configuration of the ash tray in the pellet stove of the present invention,
10 is a block diagram of a control unit in a pellet stove of the present invention.

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

Pellet stove of the present invention from the hopper 11 of the fuel supply unit 10 in which the pellet fuel (P) is stored in the interior of the stove body 80 having the opening and closing door 81 as shown in Figures 2 to 4 P is supplied to the furnace 31 of the combustion part 30 via the fuel supply apparatus 20. As shown in FIG.

The control of pellet fuel (P) supply amount to the furnace 31 using the fuel supply device 20 can be adjusted through the control unit (C), the amount of heat generated when the pellet fuel (P) is supplied to the furnace 31 a lot. When the pellet fuel P is supplied to the furnace 31, the heat generation amount decreases. Therefore, the pellet fuel P is supplied to the furnace 31 through the controller C in order to adjust the amount of heat generated according to the room temperature.

As described above, in one embodiment of the fuel supply device 20 for controlling the supply amount of pellet fuel P to the furnace 31 through the control unit C, one end of the hopper 11 is shown. The screw 22 which is rotated together with the operation of the motor 23 is installed inside the cylindrical tube 21 connected to the lower end and connected to the inlet of the fuel supply port 24. The outlet 25 of 24 is configured to be positioned at the inlet of the furnace 31 of the combustion section 30.

In the method for adjusting the amount of pellet fuel P supplied to the furnace 31 by using the fuel supply device 20 of the present invention having the above configuration, the rotation speed of the motor 23 formed in the controller C is increased. It is determined by up / down adjustment. When the rotational speed of the motor 23 is increased, the rotational speed of the screw 22 is increased, and the amount of pellet fuel P supplied to the furnace 31 is increased. When the rotational speed is lowered, the rotational speed of the screw 22 is slowed down, so that the amount of pellet fuel P supplied to the furnace 31 is reduced.

When the pellet fuel P is supplied to the furnace 31 through the fuel supply device 20, the pellet fuel P supplied to the furnace 31 is ignited using the ignition device 40. The method is automatically ignited by the ignition device 40, and the ignition device 40 preferably uses an electric telephone device, but if necessary, gas or oil ignition devices may be used.

When the pellet fuel P of the furnace 31 is ignited by the ignition device 40, the flame of the furnace 31 is detected by the flame sensor S installed at the adjacent position of the furnace 31 to complete the ignition. When it is detected as a state to send a signal to the control unit (C) to stop the operation of the ignition device 40, if it is detected that the ignition is not completed state continues to operate the ignition device 40 to induce the nuclear power ignition. The control unit C controls whether the ignition device 40 is operated by recognizing whether it is non-ignition or complete ignition according to the detection value of the flame detected by the flame detection sensor S.

Meanwhile, in the exemplary embodiment of the combustion unit 30 in which the pellet fuel P of the furnace 31 is ignited and combusted by the ignition device 40, the upper part is opened and the body 32 is opened as shown in FIG. 6. In the plurality of holes 33 are drilled, the upper periphery of the furnace 31 is formed with a locking jaw 34, a space 36 having a size larger than the size of the body 32 is formed and the locking jaw ( 34 and the furnace chamber 35 which is provided to support the furnace 31, and the space 36 of the furnace chamber 35 is mutually communicated, and the air outside the combustion part 36 to the furnace chamber 35, or oxygen It is made by installing an oxygen supply passage 37 to supply the.

The reason why the plurality of holes 33 are formed in the body 32 is to ensure that the air supplied from the oxygen supply passage 37, that is, the pellet fuel P combusted with oxygen, is sufficiently supplied. The reason why the 34 is formed is to allow the upper portion of the furnace 31 to be stably supported on the upper portion of the furnace chamber 35.

The air supplied to the oxygen supply passage 37 is the outside of the stove main body 80, that is, the indoor air, and the indoor air flows through the grill 85 formed in the stove main body 80 as shown in FIG. 2. to be.

The reason why the furnace chamber 35 having the space 36 is formed is that all of the air, that is, oxygen, supplied from the oxygen supply passage 37 is supplied to the hole 33 formed in the body 32 of the furnace 31. This is to facilitate the combustion of the pellet fuel (P).

At this time, the air that is supplied through the oxygen supply passage 37, that is, oxygen is supplied to the body 33 of the furnace 32, the hole 33 of the furnace 31, the combustion unit is generated along with the operation of the air suction means 70 The configuration of one embodiment of the air suction means 70 which generates the suction force of the combustion unit 30 as described above with reference to FIGS. 4 and 8 will now be described.

As shown in FIG. 8, the air suction means 70 is installed on one side of the lower portion of the stove main body 80, and an air suction path 71 is provided to communicate with the combustion unit 30. At the rear end of the 71, an air suction chamber 74 is installed, which is connected with the operation of the motor 72 to generate a suction force of the air suction path 71, and an air suction chamber 74 is installed. A cooling fan 75 interlocked with the operation of the motor 72 to prevent heat transfer to the motor 72 is installed at an upper portion thereof, and an insulation plate is disposed between the suction fan 73 and the cooling fan 75. 76 is installed, the one side of the air suction chamber 74 is made of a communication installation portion 77 for connecting and installing the communication 83 is formed.

The suction force generation of the combustion unit 30 by the air suction means 70 having the above-described configuration is, when the suction fan 73 is rotated together with the operation of the motor 72 and the suction fan 73 is rotated, The suction force is generated and the suction force is the air suction chamber 74 → the air suction passage 71 → the combustion unit 30 → the hole 33 of the furnace body 32 → the space 36 of the furnace chamber 35 → oxygen The supply path 37 is delivered to the outside of the stove body 80 to suck the air outside the stove body 80, that is, the room.

As described above, when indoor air is inhaled, the inhaled air, that is, oxygen is blown into the furnace 31 through the hole 33, so that the combustion of the pellet fuel P is made smoothly, and the combustion occurs. Smoke and harmful gas of the combustion unit 30 is exhausted to the air suction path 71 → air suction chamber 74 → communication 83.

At this time, since the air suction passage 71 surrounds the heat exchange passage 60, the heat of the smoke heats (heat exchanges) the heat exchange passage 60.

In addition, in order to prevent the heat of the smoke exhausted from the air suction chamber 74 → the communication 83 to the motor 72 to prevent the motor 72 from being damaged, a heat insulating plate 76 is installed. A cooling fan 75 was installed for cooling 76).

Meanwhile, the suction fan 73 and the cooling fan 75 are connected to one motor 72 shaft, thereby saving electrical energy and simplifying the structure.

And the heat generated by the combustion of the pellet fuel (P) in the furnace 31 heats the heat exchange passage 60 as shown in Figure 7, the heated heat exchange passage 60 to the indoor air supply means Heat is exchanged with the air supplied by 50 to be discharged into the room through the hot air outlet 82 to heat the room.

An embodiment configuration of the indoor air supply means 50 for supplying air to the heat exchange passage 60 is installed at the bottom of the stove body 80, which is the lower part of the combustion unit 30, as shown in FIG. 6. The blower device 51 sucks indoor air and supplies it to the heat exchange passage, and the heat exchange passage 60 flows the air supplied from the blower device 51, which is the indoor air supply means 50, therein. By partially installing a plurality of heat dissipation fins 61 to increase heat exchange efficiency, the heat exchange efficiency, ie, the heating efficiency is maximized.

In addition, inside the opening / closing door 81 of the present invention, as shown in FIG. 2, when the closing door 81 is closed, smoke and harmful gas generated in the combustion unit 30 are leaked outside the combustion unit 30, that is, indoors. The heat-resistant airtight member 81a is provided to prevent the air from being opened, and when the opening door 81 is opened on one side of the opening and closing door 81 and the stove main body 80 on which the opening and closing door 81 is installed, air at the same time is opened. A sensor 81b for sending an operation stop signal of the suction unit 70 to the control unit C is installed, and a handle 81c is installed at an outer side of the opening / closing door 81.

The reason why the sensor 81b is installed is that when the open / close door 81 is opened, the air is not supplied to the furnace 31, that is, oxygen is supplied, so that the pellet fuel P burned in the furnace 31 is automatically extinguished. For sake. This is to ensure safety.

Even after opening and closing the opening and closing door 81, oxygen is continuously supplied to the furnace 31 to complete combustion of the pellet fuel P, there is a risk of burns or fire in the case of infants, children or the elderly who lack risk recognition. To prevent him.

In addition, opening the door 81 to stop the operation of the fuel supply device 20 and the air suction means 70 to stop the pellet fuel (P) combustion of the furnace 31 automatically to the furnace 31 The pellet fuel P supply is stopped, as well as the oxygen supply is stopped, the pellet fuel P combustion of the furnace 31 is automatically extinguished.

In addition, the lower part of the combustion unit 30, that is, around the furnace chamber 35, surrounds the furnace chamber 35 and receives the ash generated by burning the pellet fuel P in the furnace 31. As shown in FIG. 9, the combustion unit 30 can be cleanly managed by being installed in the form of a drawer, and there is an advantage that ashes generated while the pellet fuel P is burned can be easily removed and removed.

Moreover, the control part C is provided in one side of the stove main body 80 of this invention, The structure of the control part C supplies pellet fuel P to the control part C to the furnace 31 as shown in FIG. The air supply means 70 for sucking and discharging the smoke and harmful gas of the ignition device 40 and the combustion unit 30 to ignite the fuel supply device 20, the pellet fuel (P) supplied to the furnace 31. ) And the indoor air supply device 50 for supplying air to the heat exchange passage 60, the flame detection sensor S for detecting the flame of the furnace 31, and the sensor 81b for detecting the opening of the opening and closing door 81. Are electrically connected to each other for control.

In addition, the present invention is installed in the opening and closing door 81 to observe the combustion state of the furnace 31, and check the combustion state of the pellet fuel (P) in the furnace 31, as well as confirm the state of the flame To make it possible.

Pellet furnace of the present invention configured as described above, the ignition of the pellet fuel supplied from the hopper to the furnace is automatically performed by the ignition device, as well as the ignition device is automatically stopped after the ignition, and opening and closing the door The combustion of the pellet fuel in the furnace has the effect of ensuring safety, and ashes generated by the combustion of the pellets in the furnace can be easily removed by being received from the ash tray. There is an advantage that can prevent the loss of the motor.

10: fuel supply unit 11: hopper
20: fuel supply device 21: cylinder tube
22: screw 23: motor
24: fuel supply port 25: exit
30: combustion unit 31: brazier
32: body 33: hole
34: jam jaw 35: brazier chamber
36: space 37: oxygen supply passage
40: ignition device 50: indoor air supply means
51 blower 60: heat exchange passage
61: heat dissipation fin 70: air suction means
71: air suction path 72: motor
73: suction fan 74: air suction chamber
75: cooling fan 76: heat insulation plate
77: communication installation portion 80: stove body
81: opening and closing door 81a: by airtight protective member
81b: Sensor 81c: Handle
81d: sight glass 82: hot air outlet
83: communication 84: bulkhead
85: Grill 90: Ashtray
C: control unit P: pellet fuel
S: Smoke Detection Sensor

Claims (9)

The pellet fuel from the hopper 11 of the fuel supply unit 10 in which the pellet fuel P is stored in the hearth body 80 having the opening and closing door 81 of the combustion unit 30 through the fuel supply device 20. The heat generated while burning after ignition by using the ignition device 40 to the pellet fuel supplied to the furnace 31 and the ignition device 40 is supplied to the air and heat exchange passage 60 by the indoor air supply means 50. In the pellet stove configured to be heat exchanged in the exhaust through the hot air outlet 82, the smoke is sucked by the air suction means 70 and discharged to the outside through the communication 83,
In the adjacent position of the furnace 31 is installed a flame sensor (S) for detecting a flame generated by the ignition of the pellet fuel, the flame sensor is the ignition device 40 when the ignition of the pellet fuel of the furnace is completed It is connected to the control unit (C) that sends a signal to stop the operation of the), the opening and closing door 81, the sensor 81b is installed and the sensor is inducing the extinguishing of the pellet fuel that is burned in the furnace at the same time the opening and closing door is opened. It is installed in connection with the control unit (C) for sending an operation stop signal of the air intake means, the furnace 31 is seated in the furnace chamber 35 is provided larger than the size of the furnace, the furnace on one side of the furnace chamber An oxygen supply passage 37 for supplying oxygen is formed, and the air suction means 70 is provided on one side of the lower portion of the stove body, and an air suction passage 71 is provided to communicate with the combustion unit. At the back of the road An air suction chamber 74 is installed, which is interlocked with the operation of the motor 72 to generate a suction force of the air suction path, and an air suction chamber 74 is installed. The upper part of the suction fan is interlocked with the operation of the motor. A cooling fan 75 is installed to prevent heat transfer to the motor, and a heat insulating plate 76 is installed between the suction fan and the cooling fan, and a communication installation unit connecting and installing communication to one side of the air suction chamber. A pellet stove, characterized by forming (77). The method of claim 1,
The inside of the stove main body (80) is a pellet stove, characterized in that divided into a fuel supply unit provided with a hopper and a combustion unit provided with a furnace centered around the partition (84). The method of claim 1,
The fuel supply device 20, with one end connected to the lower portion of the hopper and the other end connected to the inlet of the fuel supply port 24 with the operation of the motor 23 in the interior of the cylindrical tube 21 Pellet stove characterized in that the rotating screw 22 is installed and the outlet of the fuel supply port is configured to be located at the inlet of the furnace. The method of claim 1,
The combustion unit 30, the upper portion is open, the body 32 has a plurality of holes (33) perforated and the upper periphery of the furnace 31 is formed with a locking jaw 34, and the size of the larger than the size of the body A space 36 is formed and an upper end of the combustion chamber 35 is provided to support the furnace, and an oxygen supply path for supplying air, ie, oxygen, outside the combustion unit to the furnace chamber, in communication with the space of the furnace chamber. A pellet stove, characterized in that 37 is provided. The method of claim 1,
The indoor air supply means (50) is a pellet stove, characterized in that the blower device 51 which is installed at the bottom of the stove body which is the lower part of the combustion unit to suck the indoor air and supply it to the heat exchange passage. The method of claim 1,
The heat exchange passage (60) is a pellet stove characterized in that a plurality of heat dissipation fins (61) are installed in the interior of the air supplied from the indoor air supply means to partially block the flow and increase heat exchange efficiency. delete The method of claim 1,
On the inner outer side of the opening and closing door 81, an airtight protection member 81a is installed to prevent the smoke and human harmful gas generated in the combustion unit from leaking out of the combustion unit when the opening and closing door is closed. On one side of the main body of the hearth door where the door is installed, a sensor 81b is installed at the same time as opening the door and sending an operation stop signal of the air suction means to the controller, and a handle 81c is installed on the outside of the door. Featured pellet stove. The method of claim 1,
The lower portion of the combustion unit 30, the surroundings of the furnace chamber 35, the pellet stove, characterized in that the ash tray (90) receiving the ash generated while burning the pellet fuel in the furnace is installed in the form of a drawer.

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