JP2009019867A - Fan heater enabling combustion of two types of fuel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fan heater enabling combustion of two types of fuel, using hulls, wood pellets, crushed sawdust, peels of fruit etc., which can be easily obtained at low cost from the neighborhood, as fuel, having two combustion chambers, capable of using not only one type of fuel but also two types of fuel, and capable of saving fuel cost by using either one of the combustion chambers in accordance with a heating area. <P>SOLUTION: The fan heater enabling combustion of two types of fuel comprises: a fuel input part for supplying fuel inside a storage tank to inside of the fan heater; a combustion part igniting and burning the fuel supplied from the fuel input part; a combustion waste storage part for storing combustion waste of which combustion is completed by the combustion part and discharging the combustion waste to outside of the fan heater; a fuel waste removing part for putting the combustion waste discharged from the combustion waste storage part in a bag and removing it; a heating part 50 generating heat by heat generated in the fuel combustion process in the combustion part; and an air blowing part forcibly blowing air to the heating part 50 to discharge hot air to inside of the fan heater. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a hot air heater for heating, and more specifically, uses husks, wood pellets, shredded sawdust, fruit peels, etc. that can be easily obtained from the surrounding area at low cost. However, two combustion chambers are provided and not only one type of fuel can be used, but also two types of fuel can be used simultaneously, and only one of the combustion chambers can be operated according to the heating area. Thus, the present invention relates to a hot air heater capable of burning two kinds of fuels so that fuel costs can be reduced.

  Heating devices for heating in winter are provided in facilities for growing crops and for raising livestock.

  As one of such heating devices, a hot air heater is used, but most of the existing hot air heaters use one of electricity, oil, and gas as fuel.

    Existing hot air heaters that use one of electricity, oil, and gas have the advantage of easy management such as fuel injection, but the fuel itself is not only expensive, There was a problem that the amount of consumption was considerable and the heating cost was weighted, so that the crop cultivation facility manager or the livestock breeding facility manager would have a cost burden.

  In particular, existing hot-air heaters that use oil as fuel use a large amount of chemical harmful substances in the combustion gas discharged during the combustion process, causing environmental pollution caused by chemical harmful substances. There was a problem.

  For these reasons, recently, a hot air heater using natural fuel that can be easily obtained from the surrounding area at low cost has been developed, and its use has been widespread for facilities for growing crops and for raising livestock. This is an increasing trend.

  However, the existing hot air heaters that use natural fuel that can be easily obtained at low cost use only one type of fuel, but the out-of-stock phenomenon of the fuel used has occurred. In some cases, there are problems in fuel preparation, which makes it difficult to use the hot air heater itself, and there is a problem in that it is bothersome to manage the fuel input during use or the treatment of combustion waste.

  Furthermore, existing air heaters that use natural fuel, which can be easily obtained at low cost, have insufficient functions for adjusting the amount of fuel input according to the heating area, and the heating effect does not reach the expected level. After that, there was a problem that would hinder the cultivation of farm products or raising livestock.

  The present invention has been devised in view of the above-described circumstances, and is provided with two combustion chambers in which chambers into which fuel is input are divided. In addition to enabling the use of different types of fuel, depending on the heating area, it is possible to optimize the heating level by operating two combustion chambers at the same time or by operating only one of the combustion chambers. The objective is to provide a warm air heater capable of burning two types of fuel that allows cost savings.

A hot air blower capable of burning two types of fuel according to the present invention includes a transfer pipe whose tip is connected to the inside of the fuel storage tank, a helical coil positioned inside the transfer pipe, a motor for rotating the helical coil, The first and second chambers are filled with fuel transferred by rotation. The first and second chambers are provided with a rotating plate whose tip is directed downward by a weight, and the rotating plate is opened. A fuel input unit in which fuel is supplied only in a state where
A fuel inlet is formed at the front entrance, the first and second combustion chambers are provided with a partition that divides the interior into upper and lower parts at an intermediate height, and horizontally provided in the combustion chamber and rotated by a motor. It consists of a transfer screw and a heater that is installed behind the combustion inlet and ignites the fuel. The inside of the combustion chamber has a "V" shape with a narrower lower width so that the fuel is concentrated in the lower part. The partition has a combustion portion located at the lower portion spaced from the lower end of the fuel inlet so that a part of the ignited fuel remains in the combustion chamber and the fuel traveling in the upper portion can be burned continuously;
It consists of a transfer pipe whose tip is located outside the combustion section, a helical coil located inside the transfer pipe, and a motor that rotates the helical coil, and is provided on the lower rear side of the partitions of the first and second combustion chambers. A combustion exhaust gas storage part for storing the combustion waste falling from the partition and discharging it to the outside of the combustion part;
Composed of a post and a fixture that can move up and down on the post. Combustion waste discharged from the transfer pipe of the combustion waste storage part is put inside the bag supported by the fixture and removed. A combustion waste collection unit;
It consists of a lid that blocks the upper opening of the 1st and 2nd combustion chambers, a number of heat radiation pipes installed perpendicular to the cover, and hot air outlets on both sides of the heat radiation pipes. A heating unit in which the heat radiating tube is heated by the generated heat;
It consists of a waste heat removal box connected to the upper end of the radiant pipe and a blower fan installed at the top of the waste heat removal box. The blast from the blower fan is transmitted to the radiant pipe through the waste heat removal box and heated. After that, it is characterized by comprising a blower section that is discharged to the hot air outlet.

  The hot air blower capable of burning two types of fuel according to the present invention is provided with two chambers in the fuel input part, and provided with two combustion chambers connected to one of the chambers in the combustion part. However, since any one type of fuel can be used and two types of fuel can be used at the same time, the problem caused by fuel supply and demand can be solved. Since one of the combustion chambers or two of the combustion chambers can be used at the same time, not only heating suitable for the heating area is possible, but also a fuel cost saving effect is obtained. Will be able to.

  The following is a more detailed description based on the accompanying drawings.

  FIG. 1 is a perspective view showing the outer shape of a warm air capable of burning two types of fuel according to the present invention, and FIG. 2 illustrates the structure of a warm air capable of burning two types of fuel according to the present invention. FIG. 3 is a rear view for explaining a structure of a warm air heater capable of burning two types of fuel according to the present invention, and FIG. 4 is a diagram illustrating a two types of fuel capable of burning according to the present invention. FIG. 5 is a side sectional view for explaining the internal structure of the warm air heater, and FIG. 5 is a front sectional view for explaining the internal structure of the warm air heater capable of burning the two kinds of fuel according to the present invention. FIG. 7 is a front sectional view for explaining the operation of the fuel input part in the warm air capable of burning the two types of fuel according to the present invention, and FIG. FIG. 8 is a side sectional view for explaining the operation of the combustion section, and FIG. FIG. 9 is a side sectional view for explaining the operation of the combustion waste storage unit, and FIG. 9 is a diagram for explaining the operation of the combustion waste collection unit in the warm air capable of burning the two kinds of fuel according to the present invention. FIGS. 10a to 10c are heater operation state diagrams illustrating a fuel ignition process through a heater in a warm air capable of burning two types of fuel according to the present invention.

  As shown in FIGS. 1 to 5, the warm air heater (A) capable of burning two types of fuel according to the present invention includes a fuel input unit 10, a combustion unit 20, a combustion waste storage unit 30, a combustion The waste collection unit 40, the heating unit 50, and the air blowing unit 60 are included.

  The fuel input unit 10 is transferred by the rotation of the transfer tube 11 whose tip is connected to the inside of the fuel storage tank 17, the spiral coil 12 positioned inside the transfer tube, the motor 13 that rotates the spiral coil 12, and the spiral coil 12. The first and second chambers 14 and 14 ′ into which the fresh fuel is introduced, and the helical coil 12 in the transfer pipe 11 is rotated by driving the motor 13, so that the fuel in the storage tank 17 is supplied to each chamber. 14, 14 'can be put inside.

  In such a fuel injection section 10, the transfer pipe 11 is preferably a corrugated pipe so that bending can be freely formed, and the tip of each chamber 14, 14 'is directed downward by a weight 15a. The rotating plate 15 is installed, but the rotating plate 15 is preferably connected to a sensing sensor 16 that senses its open state, and the storage tank 17 is preferably connected separately to each of the chambers 14 and 14 '. .

  As described above, the rotation plate 15 is connected to the detection sensor 16, so that the fuel is supplied only when the detection sensor 16 detects the state where the rotation plate 15 is opened.

  Combustion unit 20 includes first and second combustion chambers 21 and 21 'each having a fuel inlet 22 formed at the front entrance and a partition 23 that divides the interior into upper and lower parts at an intermediate height, and each combustion It is composed of a transfer screw 24 installed horizontally in the chambers 21 and 21 ′ and rotated by a motor 26, and a heater 25 installed in front of the combustion input port 22 and igniting fuel, The heater 25 ignites the fuel before fuel is introduced into the combustion chambers 21 and 21 'through the transfer screw 24 rotated by the drive of the motor 26. Fuel combustion is performed.

  The transfer screw 24 has a large number of through holes 24b formed on the outer surface of the central tube 24a. One end of the transfer screw 24 is connected to the combustion fan 27 so that air can be blown into the tube 24a.

  In such a combustion section 20, each combustion section 21, 21 ′ has a “V” shape in which the width on the lower side is narrowed when viewed from the front cross section so that the fuel is concentrated in the lower part. The partition 23 provided inside the 21 and 21 'is located at a lower portion with a gap from the lower end of the fuel inlet 22, and an air inflow tool 28 and an air inflow adjuster are located behind the combustion chambers 21 and 21'. 29 is provided.

  The combustion waste storage unit 30 is located at the lower rear of each combustion chamber 21, 21 ′ of the combustion unit 20, and includes a transfer pipe 31 and a helical coil 32 positioned inside the transfer pipe. The combustion waste that passes through 21 'and falls to the lower part behind the partition 23 is stored, but the stored combustion waste is discharged outside the combustion unit 20 by the spiral coil 32 that rotates in the transfer pipe 31. is there.

  In such a combustion waste storage unit 30, one end behind the spiral coil 32 is connected to one end behind the transfer screw 24 of the combustion unit 20 via a chain, and one end behind the spiral coil 32 is one end behind the transfer screw 24. , The helical coil 32 is rotated through the rotation of the transfer screw 24 that is rotated by a separate motor 26.

  On the other hand, the transfer pipe 31 of the combustion waste storage unit 30 is preferably a corrugated pipe so that bending can be freely formed.

  The combustion waste collection unit 40 is configured by a fixture 42 coupled to a post 41, and the combustion product discharged from the combustion waste storage unit 30 is coupled to the post 41. It is to be removed in a bag 43 supported by.

  It is preferable that the height of the fixing device 42 can be adjusted because the fixing height of the bag 43 is variable in the burned material portion 40.

  The heating unit 50 is provided on both sides of the heat radiating pipe 52, a lid 51 that blocks the opening of the upper portions of the first and second combustion chambers 21, 21 ′, a number of heat radiating pipes 52 installed perpendicularly to the lid 51, and In which the heat radiating pipe 52 is heated by the heat generated in the fuel combustion process of the combustor 20, and the heated air is discharged to the hot air outlet 53. It is.

  In such a heating unit 50, the heat radiating tubes 52 are provided in the same number in the upper part of the first and second combustion chambers 21.21 ', but are continuously arranged along the longitudinal direction, but are generated from the combustion chambers 21, 21'. Heat can be used evenly.

  The air blower 60 is composed of a waste heat removal box 62 connected to the upper end of the heat radiating pipe 52 and a blower fan installed on the upper part of the waste heat removal box 62. After being transferred to the heat radiating pipe 52 through the heat removal box 62 and heated, it is discharged to the hot air outlet 53.

  The upper part of the blower fan 61 in such a blower 60 is naturally opened so that external air can flow in.

  The operation of the warm air heater (A) capable of burning the two kinds of fuel according to the present invention as described above is as follows.

  The spiral coil 12 of the fuel charging unit 10 is connected to the inside of the fuel storage tank 17 at the other end opposed to one end connected to the motor 13, but when the spiral coil 12 is rotated by the motor 13, The fuel inside the storage tank 17 can be introduced into the first and second chambers 14 and 14 ′ through the transfer pipe 11.

  As shown in FIG. 2, each of the chambers 14 and 14 'is connected to a separate storage tank 17, but when storing different types of fuel in each storage tank 17, two types of fuel are stored. Can be used.

  The driving of the motor 13 for rotating the helical coil 12 in the above process is not performed when the fuel is filled in the chambers 14 and 14 '.

  The fact that the motor 13 is not driven when the fuel is filled in the chambers 14 and 14 'is due to the rotating plate 15 provided in the chambers 14 and 14' as shown in FIG. The rotating plate 15 has a tip directed downward by a weight 15a, and such a rotating plate 15 is connected to a sensor 16 for detecting the open state. Since the sensor 13 is set so that the motor 13 is driven only when the sensor 16 detects this when the sensor 15 detects that the sensor 15 is opened by the weight 15a pointing downward, the lower part of the rotating plate 15 In this state, the motor 13 is not driven in a state where the tip of the rotating plate 15 cannot be directed downward, i.e., when the rotating plate 15 is closed. As a result, the rotating plate 15 is closed. The fuel is not charged It becomes like this.

  On the other hand, the fuel charged into the chambers 14 and 14 ′ of the fuel charging unit 10 is supplied into the first and second combustion chambers 21 and 21 ′ of the combustion unit 20.

  The progress of the fuel in the first and second combustion chambers 21 and 21 ′ is due to the transfer screw 24 rotated by the motor 26.

  The initial stage of fuel progress through the transfer screw 24, that is, the fuel is ignited immediately before the fuel passes through the fuel inlet 22.

  The ignition of fuel is performed by the heater 25 installed in front of each combustion chamber 21, 21 '. The fuel ignition process through the heater 25 will be described in detail as follows.

  The heater 25 heated immediately before the fuel passes through the fuel inlet 22 of the combustion chambers 21 and 21 ′ heats a part of the fuel so that the primary ignition is performed as shown in FIG. 10a. Become.

  In the primary ignition process, the transfer screw 24 in the combustion chambers 21 and 21 'is in a state where the rotation is interrupted, and the transfer screw 24 is rotated in a state where a part of the fuel is ignited by the primary ignition. .

  At this time, it is preferable that the time required for the primary ignition, that is, the time during which a part of the fuel is ignited is within 5 minutes.

  With the primary ignition completed, the transfer screw 24 rotates 120 ° counterclockwise.

  The rotation of the transfer screw 24 after the primary ignition causes the heater 25 to secondary-ignite the portion of the fuel that is not ignited, as shown in FIG.

  The secondary ignition is performed in a shorter time than the primary ignition, and is preferably within 3 minutes, and the rotation of the transfer screw 24 is interrupted during the secondary ignition process.

  In a state where the secondary ignition is completed, the transfer screw 24 rotates 120 ° counterclockwise again.

  After the secondary ignition, as the transfer screw 24 rotates, as shown in FIG. 10c, the heater 25 performs the primary ignition and the third part of the fuel that is not ignited through the secondary ignition. Therefore, the fuel ignition part is further expanded.

  The tertiary ignition is performed in a shorter time than the secondary ignition, and is preferably within 2 minutes, and the rotation of the transfer screw 24 is interrupted during the tertiary ignition process.

  In the ignition process as described above, the rotation direction of the transfer screw 24 is preferably performed in a direction in which the immediately preceding ignition part is located below.

  The fuel introduced into the combustion chambers 21 and 21 ′ by such a process can be uniformly ignited in the circumferential form, and the fuel ignited in the above state is transferred to the combustion chambers 21 and 21 ′ by the transfer screw 24. The operation of the heater 25 is interrupted when the fuel ignition is completed.

  On the other hand, in the process in which the ignition-completed fuel proceeds to the rear of each combustion chamber 21, 21 'and burns, the air inlet 28 and the air inflow are disposed behind the combustion chamber 21, 21' as shown in FIG. Since the adjuster 29 is provided, combustion is performed with the air flowing in through the air inlet 28 and the air adjuster 29.

  Here, one end of the tube body 24a at the center of the transfer screw 24 is connected to the combustion fan 27 as shown in FIG. 7, and many through holes 24b are formed on the outer surface of the tube body 24a. Because the rotation of the combustion fan 27 causes the air to be added to the inside of the tube body 24a, and the added air is discharged to the through hole 24b on the outer surface of the tube body 24a, so that forced air can be added to the fuel. Fuel combustion is activated.

  At this time, the air inflow adjuster 29 adjusts the air inflow amount in accordance with the door open method, and the through hole formed in the outer surface of the tube body 24a of the transfer screw 24 is used to activate the combustion at the initial stage of ignition. For this reason, the transfer screw 24 located in front of the combustion chambers 21 and 21 ′ is more closely in contact with the front.

  On the other hand, when the fuel being combusted in each combustion chamber 21, 21 ′ travels backward by the transfer screw 24, the fuel stacked below the transfer screw 24 does not travel.

  Since the partition 23 installed in each combustion chamber 21, 21 'is installed at an intermediate height between the combustion chambers 21, 21', the partition 23 is located at a lower portion with a gap from the lower end of the fuel input port 22. Therefore, even if the transfer screw 24 rotates and the fuel advances backward, the fuel stacked under the transfer screw 24 will not be affected by the rotation of the transfer screw 24 and thus will not advance. is there.

  As described above, the fuel located in the lower part of the transfer screw 24 is prevented from proceeding, so that the fuel can be burned continuously, but the fuel located in the lower part of the transfer screw 24 is ignited. By remaining in the upper part of the partition 23 without proceeding in a state, the fuel that continuously proceeds to the upper part is ignited, so that the fuel is continuously burned.

  The combustion chambers 21 and 21 'can be operated in the fuel combustion process through the combustion unit 20 according to the heating area, or the two combustion chambers 21 and 21' can be operated simultaneously or only one of the combustion chambers can be operated. It is.

  On the other hand, the fuel that travels behind the combustion chambers 21 and 21 ′ and burns in the combustion process reaches the rear of the partition 23 and remains in the combustion waste as shown in FIG. Is dropped to the lower part of the partition by progress through the transfer screw 24 and stored in the combustion waste storage unit 30, and then discharged to the outside of the combustion unit 20 by the helical coil rotating in the transfer pipe 31, but the combustion unit 20 The combustion waste discharged from the fuel reaches the combustion waste collection section 40 through the transfer pipe 31 connected to the outside of the combustion section 20, and is put into the bag 43 supported by the fixture 42 of the post 41. Automatic evacuation will be performed.

  Since the fixture 42 can be adjusted in height at the combustion waste removal section 40 where the automatic removal of the combustion waste is performed, the size of the bag 43 is adjusted according to the size of the bag 43 as shown in FIG. Combustion waste can be put in such a manner that the bottom surface is in contact with the ground, and the combustion waste collected in the bag 43 is reused as fertilizer.

  On the other hand, the heat generated by the fuel combustion in the combustion unit 20 is transmitted to the heat radiating pipe 52 of the heating unit 50 located above, and the heat dissipated through the heat radiating pipe 52 is discharged through the hot air outlets 53 on both sides. .

  The radiating pipe 52 of the heating unit 50 is provided on the upper part of each combustion chamber 21, 21 ′ so as to be continuous along the longitudinal direction in the same number, but the heat dissipated from the combustion chamber 21, 21 ′ is entirely Can be used evenly.

  Although the air blower 60 is located on the upper part of the heating unit 50, forcible air is added to the heating unit 50 by the operation of the air blowing fan 61. After that, since it is transmitted to the heat radiating pipe 52 and heated, it is discharged to the warm air outlet 53 of the heating unit 50 in the warm air state, so that heating through the warm air is performed.

  Here, the waste heat collection box 62 of the air blower 60 does not immediately discharge the heat that has passed through the heat radiating pipe 52 to the outside, but confines it, but does not immediately discharge the heat that has passed through the heat radiating pipe 52 to the outside. The waste heat is reused by confining it once through the waste heat collection box 62.

  Whether the combustor 20 operates in the warm air (A) capable of burning the two kinds of fuel according to the present invention as described above depends on the setting of the timer or the heating temperature as in the general warm air. Therefore, detailed explanation about this is omitted.

  Since the present invention as described above is not limited to the above-described embodiments, modifications can be made without departing from the spirit of the present invention claimed in the claims, and such modifications are described. Within the claims.

It is the perspective view which showed the whole external shape of the warm air heater which can burn the two types of fuel by this invention. It is a front view for demonstrating the structure of the warm air heater which can burn the two types of fuel by this invention. It is a rear view for demonstrating the internal structure of the warm air heater which can burn the two types of fuel by invention. It is a sectional side view for demonstrating the internal structure of the warm air heater which can burn the two types of fuel by this invention. It is a front sectional view for explaining the internal structure of a hot air heater capable of burning two types of fuel according to the present invention. FIG. 5 is a front sectional view for explaining the operation of a fuel charging unit in a warm air capable of burning two types of fuel according to the present invention. It is a sectional side view for demonstrating the action | operation of a combustion part in the warm air capable of burning the two types of fuel by this invention. It is a sectional side view for demonstrating the action | operation of a combustion waste storage part in the warm air device which can burn the two types of fuel by this invention. It is a side view for demonstrating the action | operation of a combustion waste collection | recovery part in the warm air device which can burn two types of fuel by this invention. FIG. 3 is a heater operation state diagram showing a fuel ignition process through a heater in a hot air heater capable of burning two types of fuel according to the present invention. FIG. 3 is a heater operation state diagram showing a fuel ignition process through a heater in a hot air heater capable of burning two types of fuel according to the present invention. FIG. 3 is a heater operation state diagram showing a fuel ignition process through a heater in a hot air heater capable of burning two types of fuel according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Fuel input part 11 Transfer pipe 12 Spiral coil 13 Motors 14, 14 '1st, 2nd chamber 15 Rotating plate 16 Sensor 17 Storage tank 20 Combustion part 21, 21' 1st, 2nd combustion chamber 22 Fuel inlet 23 Partition 24 Transfer screw 24a Tube body 24b Through hole 25 Heater 26 Motor 27 Combustion fan 28 Air inlet 29 Air inflow adjuster 30 Combustion waste storage part 31 Transfer pipe 32 Spiral coil 33 Chain 40 Combustion waste collection part 41 Post 42 Fixing tool 43 Bag 50 Heating part 51 Lid 52 Radiating pipe 53 Hot air outlet 60 Blower part 61 Blower fan 62 Waste heat collection box A

Claims (8)

A transfer pipe whose tip is connected to the inside of the fuel storage tank, a helical coil located inside the transfer pipe, a motor for rotating the helical coil, and first and second chambers into which fuel transferred by the rotation of the helical coil is introduced And a fuel input section in which fuel is input only in a state where a rotating plate having a tip directed downward is provided by a weight and the rotating plate is opened inside the first and second chambers;
First and second combustion chambers with a fuel inlet at the front entrance and a partition that divides the interior into upper and lower parts at an intermediate height, and a transfer screw installed horizontally in the combustion chamber and rotated by a motor And a heater installed behind the combustion inlet for igniting the fuel, but the inside of the combustion chamber has a "V" shape with a lower width so that the fuel is concentrated in the lower part. A combustion section located at the lower portion spaced from the lower end of the fuel inlet so that a part of the ignited fuel remains in the combustion chamber and the fuel traveling in the upper portion can be burned continuously;
It consists of a transfer pipe whose tip is located outside the combustion section, a helical coil located inside the transfer pipe, and a motor that rotates the helical coil, but the partition for the first and second combustion chambers is provided on the lower rear side. A combustion waste storage unit for storing the combustion waste falling from the combustion chamber and discharging it to the outside of the combustion unit;
Composed of a post and a fixture that can move up and down on the post. Combustion waste discharged from the transfer pipe of the combustion waste storage part is put inside the bag supported by the fixture and removed. A combustion waste collection unit;
It consists of a lid that blocks the upper opening of the first and second combustion chambers, a number of heat radiation pipes installed vertically on the lid, and a hot air outlet provided on both sides of the heat radiation pipe. A heating section in which the heat radiating pipe is heated by heat generated in
It consists of a waste heat removal box connected to the upper end of the radiant pipe and a blower fan installed at the top of the waste heat removal box. The air blown by the blower fan is transmitted to the radiant pipe through the waste heat removal box and heated. A hot air heater capable of burning two types of fuel, characterized in that it comprises an air blowing section that is discharged to a hot air outlet after being heated.   2. The two-type fuel combustion according to claim 1, wherein the rotation plate of the fuel injection unit is connected to a detection sensor, and fuel is input only when the detection sensor senses the open state of the rotation plate. A warm air heater that can.   The transfer screw of the combustion section is connected to a combustion fan at one end behind the central tube body in which a large number of through holes are formed on the outer surface, forced air is applied to the inside of the tube body, and the fuel is discharged through the through holes. The warm air capable of burning two kinds of fuels according to claim 1, wherein combustion can be activated. 2. The two types according to claim 1, wherein an air inlet and an air inflow adjuster are provided at the rear of each combustion chamber of the combustion section so as to adjust an external air inflow and an air inflow amount. Hot air heater that can burn fuel.   The helical coil of the combustion waste storage unit is connected to one end of the rear of the transfer screw of the combustion unit via a chain through a chain so that the rotation of the helical coil is performed together with the rotation of the transfer screw. The hot air heater capable of burning the two kinds of fuels according to claim 1.   Although the same number of heat dissipating tubes of the heating unit are provided in the upper part of each combustion chamber, the heat of the entire combustion chamber can be used evenly by being continuously arranged along the longitudinal direction of the combustion chamber. A hot air heater capable of burning the two-type fuel according to claim 1.   4. The dual fuel according to claim 1 or 3, wherein the through hole formed in the transfer screw tube of the combustion section is more closely contacted forward for the activation of combustion at the initial stage of ignition. Warm air heater.   The hot air blower capable of burning two types of fuel according to claim 1 or 3, wherein the transfer screw of the combustion section rotates stepwise by 120 degrees in the process of fuel ignition through a heater.

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