KR20160118766A - Combustion device for pellet fan heater - Google Patents

Combustion device for pellet fan heater Download PDF

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Publication number
KR20160118766A
KR20160118766A KR1020150047435A KR20150047435A KR20160118766A KR 20160118766 A KR20160118766 A KR 20160118766A KR 1020150047435 A KR1020150047435 A KR 1020150047435A KR 20150047435 A KR20150047435 A KR 20150047435A KR 20160118766 A KR20160118766 A KR 20160118766A
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KR
South Korea
Prior art keywords
combustion
pellet
wood
wood pellet
supplied
Prior art date
Application number
KR1020150047435A
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Korean (ko)
Inventor
정재성
Original Assignee
주식회사 비제이
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Publication date
Application filed by 주식회사 비제이 filed Critical 주식회사 비제이
Priority to KR1020150047435A priority Critical patent/KR20160118766A/en
Publication of KR20160118766A publication Critical patent/KR20160118766A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B1/00—Combustion apparatus using only lump fuel
    • F23B1/30—Combustion apparatus using only lump fuel characterised by the form of combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B7/00—Combustion techniques; Other solid-fuel combustion apparatus
    • F23B7/002—Combustion techniques; Other solid-fuel combustion apparatus characterised by gas flow arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
    • F24H3/067—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators using solid fuel

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

Abstract

According to the present invention, a combustion device of an wood pellet fan heater is disclosed. The present invention relates to the combustion device of an wood pellet fan heater where an wood pellet which is a fuel is supplied from a lower portion and air is supplied from the lower portion by a blowing module. The present invention comprises: a combustion unit having a combustion chamber of which an upper portion is opened to secure a space where the wood pellet is combusted and having a fuel inlet formed in a lower portion where the wood pellet is supplied; an ignition unit provided to the lower portion of the combustion unit to ignite the wood pellet; and a complete combustion induction flame discharge guide unit installed to cover the opened upper portion of the combustion unit and having a plurality of flame outlets.

Description

[0001] Combustion device for pellet fan heater [0002]

The present invention relates to a combustion apparatus for a wood pellet heat fan, and more particularly, to a combustion apparatus for a wood pellet heat fan capable of preventing unburned fuel from scattering and maximizing thermal efficiency.

BACKGROUND ART Generally, a hot air fan is a means for circulating heated air for heating while a burner is being ignited by a control system such as an electric ignition system, and oil or gas is mainly used as the fuel.

In the case of a hot-air fan using such oil or gas as fuel, the cost of purchasing the fuel is excessive and the maintenance cost is high. Therefore, the burden of the use of the hot air fan is increasing in rural areas where the income level is low.

Recently, a large number of hot air fans using wood pellets produced by processing rice hulls, sawdust, and other sludge have been used. These wood pellet heaters have advantages of saving the heating cost but being eco-friendly, There is a problem that the fuel efficiency is not high because the pellets are not combusted properly.

In addition, there is a concern that flames from the combustion chamber may be reversed in the wood pellet hot air fan. This is a problem that can directly lead to fire occurrence.

In view of this, the inventor of the present invention has proposed a pellet storage apparatus comprising a housing forming an outer appearance with Korean Patent Laid-Open Publication No. 10-2012-0123838 (name: wood pellet boiler), a pellet storage unit provided inside the housing for storing wood pellets, A pellet supply section for transferring the wood pellets from the pellet storage section to the combustion apparatus; an air blowing module for blowing air into the combustion apparatus; And a heat exchange module for warming the outer surface of the heat exchange pipe and discharging the air inside the heat exchange pipe that is heat-exchanged to the outside.

Since the pellets are supplied from the lower side to the combustion section, the sludge is not accumulated in the combustion section and air is supplied to the combustion chamber. As a result, the combustion efficiency of the boiler is increased by the complete combustion of the pellets. The flame can be prevented from being backfired from the combustion section to the pellet supply section side, thereby reducing the risk of accidents.

However, as described above, the wood pellet boiler developed by the present inventors not only causes the fuel not completely combusted to be scattered, but also disperses the flames to be discharged, which may lower the thermal efficiency, and thus needs room for improvement.

Korean Patent Publication No. 10-2012-0123838 (2012.11.12)

SUMMARY OF THE INVENTION The present invention has been conceived in view of the above points, and it is an object of the present invention to provide a flame discharge guide for flame discharge which is provided with a flame discharge outlet formed on an upper portion of a combustion section, thereby preventing the pellet material from being scattered, Which is capable of reducing the amount of fuel consumption by preventing the burning of the wood pellet.

In addition, the present invention is characterized in that a complete soft burning flame discharge guide portion is formed in a hemispherical shape, and a flame discharge port is formed in the hemispherical flake discharge guide portion, whereby firepowder discharged by a flame discharge hole coalesces to generate a higher thermal power, It is another object to provide a combustion device for a hot air fan.

In order to accomplish the above object, the present invention provides a combustion apparatus for a wood pellet type air conditioner, in which wood pellets as fuel are supplied from the lower side and air is supplied from the lower side by a blowing module, An ignition part provided at a lower portion of the combustion part to ignite the wood pellet; and an ignition part provided at a lower part of the combustion part to ignite the wood pellet, The present invention provides a combustion apparatus for a wood pellet type air conditioner, which is installed to cover an opened upper portion of a combustion section, and includes a complete soft burning flame discharge guide part having a plurality of flame ejection openings.

In the present invention, the upper portion of the complete flame discharge guide flame discharge guide portion may be hemispherical.

In the present invention, the combustion unit may be provided with a protective pipe surrounding the outer side of the combustion unit.

In the present invention, the combustion chamber of the combustion unit is formed with an inclined surface having a narrower upper and lower width as it goes downward, and a reclaimed hole may be formed on the inclined surface.

According to the combustion apparatus for a wood pellet type fan motor according to the present invention, the complete soft burning flame discharge guide provided with the flame ejection port is provided on the upper part of the combustion section, thereby preventing the pellet material from being scattered, So that the fuel consumption can be reduced.

Further, the flame discharge guide portion is formed in a hemispherical shape, and the flame discharge port is formed in the flame discharge guide portion. Thus, the flame discharged by the flame discharge opening coalesces to generate a higher thermal power, thereby maximizing thermal efficiency.

FIG. 1 is a perspective view of a wood pellet heat exchanger according to the present invention,
2 is a side cross-sectional view of a wood pellet heat fan according to the present invention,
FIG. 3 is a plan view showing a blowing module of the wood pellet heat fan according to the present invention,
4 is a perspective view showing a combustion apparatus for a wood pellet type air warming fan according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a combustion apparatus for a wood pellet type fan unit according to the present invention will be described in detail with reference to the accompanying drawings.

In describing the present invention, the sizes and shapes of the components shown in the drawings may be exaggerated or simplified for clarity and convenience of explanation. In addition, the terms defined in consideration of the configuration and operation of the present invention may be changed according to the intention or custom of the user, the operator. These terms are to be construed in accordance with the meaning and concept consistent with the technical idea of the present invention based on the contents throughout the present specification.

FIG. 1 is a perspective view of a wood pellet heat fan according to the present invention, FIG. 2 is a side sectional view of the wood pellet heat fan according to the present invention, FIG. 3 is a plan view showing a blowing module of a wood pellet heat fan according to the present invention, FIG. 2 is a perspective view showing a combustion apparatus for a wood pellet type fan according to the present invention; FIG.

1 to 3, a wood pellet type air warming apparatus 1 according to an embodiment of the present invention includes a housing 10 for forming an outer appearance, a housing 10 provided inside the housing 10 for storing wood pellets P A burner 30 for burning wood pellets P to generate thermal energy and pellets P for transferring the wood pellets P from the pellet storage 20 to the combustion device 30, A pellet feed pipe 50 for connecting the pellet storage 20 and the pellet feeder 40 to each other and blowing air into the combustion device 30 to smoothly burn the wood pellet P And a heat exchange module 70 for heating the air in the heat exchange pipe 72 by heat energy generated in the combustion device 30 and discharging the air to the outside of the housing 10. [

The wood pellet heat fan 1 burns the wood pellets P in the combustion section 32 of the combustion apparatus 30 and warms the outer surface of the heat exchange pipe 72 of the heat exchange module 70 by heat energy generated, And the air inside the heat-exchanged heat exchange pipe 72 is discharged to the outside.

The housing 10 forms an outer frame of the wood pellet heat exchanger 1. The housing 10 includes a pellet storage portion 20, a combustion device 30, a pellet supply portion 40, a pellet supply pipe 50, A blowing module 60 and a heat exchange module 70 are provided.

On both sides of the housing 10, an upper suction port 11a and a lower suction port 11b are formed so that outside air flows into the blowing means 61 of the blowing module 60 and the heat exchange blower 71 of the heat exchange module 70, And a blowing port 12 through which heat is exchanged in the heat exchange pipe 72 is discharged to the outside.

A combustion window 13 for confirming the thermal power of the combustion device 30 is formed in the lower portion of the tuyere 12 formed on the front surface of the housing 10 and an operation of the wood pellet heat fan 1 can be controlled The control panel 14 is installed. Here, the control panel 14 may be a touch type or a button input type.

The pellet storage part 20 is provided inside the housing 10 such that the upper side of the pellet storage part 20 is opened so that a large amount of wood pellets P can be stored therein.

At this time, the lower side of the pellet storage part 20 is formed such that the tapered surface is formed so that the diameter becomes smaller, and the wood pellets P are concentrated to the lower part of the pellet storage part 20.

The lower surface of the pellet storage part 20 is opened to be connected to the pellet feed pipe 50 and the pellet feed pipe 50 is communicated with the pellet feed part 40 to feed the wood pellets P ) To be supplied to the pellet feeder (40).

The pellet supply pipe 50 includes a first connection pipe 51 vertically communicating with an open lower surface of the pellet storage unit 20 and a second connection pipe 51 extending upwardly from the first connection pipe 51, And a second connection pipe 53 extending vertically downward from the inclined pipe 52 and communicating with the pellet feeder 40. [

The angle of inclination of the inclined pipe 52 with respect to the first connection pipe 51 may be set at an angle between approximately 15 degrees and 20 degrees and the inclination of the wood pellet P It is possible to prevent the tunnel phenomenon from occurring.

Therefore, since the wood pellets P falling and supplied to the pellet feeder 40 are not accumulated in the pellet feeder 40, the pellet feeder 40 smoothly feeds the wood pellets P to the combustion device 30.

Next, the pellet feeder 40 includes a pellet feed pipe 41, a shaft rod 42, a forward feed screw 43, a reverse feed screw 44, and a feed motor 45.

The pellet transfer pipe 41 is connected to the second connection pipe 53 of the pellet supply pipe 50 through the one outer circumferential surface of the pellet transfer pipe 41 and the other end extends to the lower portion of the combustion device 30 to connect the wood pellet P Respectively.

The conveying screws 43 and 44 are disposed inside the pellet conveying passage 41. The conveying screws 43 and 44 are formed in a spiral shape on the outer peripheral surface of the shaft rod 42 provided in the longitudinal direction of the pellet conveying pipe 41 do.

When the shaft rod 42 rotates by the driving of the feed motor 45, the pellet feeder 40 causes the wood pellets P to collide with the feed screws 43 and 44 so that the wood pellets P are piled up from the lower side of the combustion chamber 31 The wood pellet P is supplied to the combustion chamber 31. In order to more efficiently supply the wood pellets P, the feed screw is divided into a forward feed screw 43 and a reverse feed screw 44. [

That is, the forward conveying screw 43 and the reverse conveying screw 44 are separated from each other with reference to the lower side of the burning apparatus 30. As can be seen from the drawing, toward the conveying motor 45 side with respect to the lower side of the burning apparatus 30, The forward conveying screw 43 is formed and the reverse conveying screw 44 is formed in the opposite direction with respect to the lower side of the combustion apparatus 30. [

Therefore, unlike the screw formed in the same direction, the screw in the opposite direction is formed on the basis of the point where the wood pellet P is supplied upward from the lower part of the combustion apparatus 30, so that the wood pellet P is supplied So that a fast and efficient supply into the combustion chamber 31 becomes possible.

The air blowing module 60 includes a blowing means 61 for supplying air, a first blowing pipe 62 connected to the blowing means 61 and a second blowing pipe 62 for bending and extending from the first blowing pipe 62, And a second blowing pipe 64 connected to the backflow branch pipe 63 and forming a flow path to the combustion device 30. The backflow branch pipe 63 is provided to cover a part of the combustion chamber 30,

The blowing means 61 includes a fan housing formed to have an inlet not shown, a fan accommodated in the fan housing and forcing the flow of air by rotation, and a blowing motor for providing rotational force to the fan.

Accordingly, when a control command is issued to the blowing motor through the control unit (not shown), the fan rotates to generate the air flow, so that the outside air introduced through the inflow portion flows through the first blowing pipe 62 and the reverse air branch pipe 63 And then supplied to the combustion chamber 31 through the second blowing pipe 64. [

On the other hand, an air inflow hole 41a is formed in the outer circumferential surface of the pellet transfer tube 41 surrounded by the inverted branch pipe 63 so that air introduced into the inverted branch pipe 63 passes through the air inflow hole 41a, And can be introduced into the transfer pipe (41).

The air is introduced into the combustion chamber 31 through the second blowing pipe 64 of the blowing module 60 by the flow of the air through the pellet conveying pipe 41 in the downward direction of the combustion chamber 31 by the reverse air branch pipe 63, It is possible to prevent the inflow air from being backed to the pellet supply pipe 50 through the lower portion of the combustion chamber 31. [

The heat exchange module 70 includes a heat exchange blower 71 and a plurality of heat exchange pipes 72 connected to the heat exchange blower 71.

The air passing through the heat exchange pipe 72 is heat-exchanged with the combustion gas heating the outer surface of the heat exchange pipe 72 to discharge the warm air to the outside of the housing 10.

It is preferable that the heat exchange pipe 72 is formed by bending a plurality of times inside the housing 10 so as to increase the residence time of the combustion gas for efficient heat exchange.

The combustion apparatus 30 includes a combustion section 32 in which a combustion chamber 31 in which wood pellets P are burned is formed, a protective pipe 35 that surrounds the outer side of the combustion section 32, An ignition part 34 provided in the combustion chamber 32 for igniting the wood pellet P and a complete combustion propellation flame discharge guide part 33 provided above the combustion part 32. [

The combustion apparatus 30 is installed apart from the inner wall of the housing 10 so as to prevent the danger of burning upon contact with the housing 10.

The combustion chamber 32 is formed with a combustion chamber 31 having an upper portion of the upper light-blocking structure narrowed in width from the upper side to the lower side so as to secure a space for burning the wood pellets P supplied from the pellet supply unit 40 A plurality of reprocessing holes 32a are formed in the upper sloping slope 36 and a fuel injection port through which the wood pellets P are supplied is formed in the lower part to supply the wood pellets P. [

Here, the reprocessing hole 32a is formed in such a size that the wood pellet P can not pass through before the combustion, and the pellet material remaining on the wood pellet P is discharged through the reprocessing hole 32a. The pellet material discharged to the lower part is accumulated in the ash receiving part A provided below the pellet supplying part 40.

The combustion unit 30 is provided with a protective pipe 35 communicating with the second blowing pipe 64 so as to surround the outer side of the combustion unit 32 so as to be cooled through self-cooling according to the blowing module 60.

Since the protection pipe 35 is installed so as to surround the outer side of the combustion part 32, the combustion device 30 is cooled by the self-cooling according to the air blowing module 60, and the inner wall of the housing 10 is cooled in the combustion chamber 30 To prevent excessive heating.

An ignition part 34 for igniting the wood pellets P is provided under the combustion part 32 to ignite the wood pellets P according to a control signal of the control part during ignition.

The complete soft-landing flame discharge guide portion 33 is installed so as to cover the open upper portion of the combustion portion 32, and a plurality of flame discharge openings 33a are formed.

As shown in FIG. 4, it is preferable that the upper portion of the complete soft-landing flammable flame discharge guide portion 33 is formed in a hemispherical shape and the lower portion is formed in a cylindrical shape so as to surround the combustion portion 32.

A flame discharge opening 33a is formed in the hemispherical complete flame spread guide flame discharge guide portion 33, and flames are discharged through the flame discharge opening 33a.

As described above, in the prior art, the fuel not completely combusted in the combustion part is scattered by the blowing module 60 that blows air. According to the present invention, the flame ejection guide part 33 are provided on the upper portion of the combustion unit 32, thereby preventing the pellet material from being scattered and preventing the fuel not completely combusted from being scattered, thereby reducing the fuel consumption.

The flame discharge guide 33 is formed in a hemispherical shape and the flame discharge opening 33a is formed in the flame discharge guide 33. The flame discharged by the flame discharge opening 33a coheres to generate a higher thermal power, Can be maximized.

In addition, a temperature sensor (not shown) is installed on the inner wall of the housing 10 located at the rear of the combustion device 30, and this temperature sensor detects the ignition of the combustion device 30 Thereby making it possible to prevent the malfunction caused by the ignition of the combustion device 30.

The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art can improve and modify the technical idea of the present invention in various forms. Accordingly, these modifications and variations are intended to fall within the scope of the present invention as long as it is obvious to those skilled in the art.

1: Wood pellet heat blower 10: Housing
20: pellet storage part 30: combustion device
31: combustion chamber 32: combustion section
34: ignition part 35: protective pipe
33: Permanent burning flame discharge guide part 40: Pellet supply part
50: pellet supply pipe 60: blowing module
70: Heat exchange module

Claims (4)

Wherein the wood pellet is supplied from the lower part and the air is supplied from the lower part by the air blowing module,
A burning unit having a combustion chamber in which an upper part of the combustion chamber is opened to secure a space in which the wood pellets are burnt, and a fuel injection port through which a wood pellet is supplied;
An ignition unit provided at a lower portion of the combustion unit to ignite the wood pellet; And
A complete combustion propellant flame ejection guide installed to cover an opened upper portion of the combustion section and having a plurality of flame ejection openings;
And a burner for burning the wood pellet.
The method according to claim 1,
Wherein the upper portion of the complete soft-landing flammable flame discharge guide portion is hemispherical.
The method according to claim 1,
Wherein the combustion unit is provided with a protection pipe surrounding the outer side of the combustion unit.
The method according to claim 1,
Wherein the combustion chamber of the combustion unit is formed with a sloped surface having a narrow upper and lower width as it goes downward from the upper side to the lower side, and a reclaimed hole is formed in the sloped surface.
KR1020150047435A 2015-04-03 2015-04-03 Combustion device for pellet fan heater KR20160118766A (en)

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KR1020150047435A KR20160118766A (en) 2015-04-03 2015-04-03 Combustion device for pellet fan heater

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Application Number Priority Date Filing Date Title
KR1020150047435A KR20160118766A (en) 2015-04-03 2015-04-03 Combustion device for pellet fan heater

Publications (1)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120123838A (en) 2011-05-02 2012-11-12 정재성 The boiler with a wood pellet

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120123838A (en) 2011-05-02 2012-11-12 정재성 The boiler with a wood pellet

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