U.S. patent application number 14/442839 was filed with the patent office on 2015-10-22 for device for centrifugal combustion by area using flow of combustion air.
The applicant listed for this patent is JiWon Kim. Invention is credited to JiWon Kim.
Application Number | 20150300638 14/442839 |
Document ID | / |
Family ID | 49455969 |
Filed Date | 2015-10-22 |
United States Patent
Application |
20150300638 |
Kind Code |
A1 |
Kim; JiWon |
October 22, 2015 |
Device for Centrifugal Combustion by Area Using Flow of Combustion
Air
Abstract
An area-specific centrifugal combustion apparatus is provided
using a flow of combustion air. Combustion air is supplied through
an upper combustion chamber. A column of fire is discharged from
the upper combustion chamber. A lower combustion chamber is coupled
with a lower part of the upper combustion chamber, and supplies
fuel into a combustion chamber for mixing with the combustion air
for combustion. An air supply pipe has an upper supply pipe and a
lower supply pipe, through which the combustion air is supplied to
the upper and lower combustion chambers. A rotary part connected to
the lower combustion chamber allows the combustion air to maintain
centrifugal force. A fuel supply on a lower end of the rotary part
includes a fixed quantity feeder allowing a fixed amount of fuel to
be supplied.
Inventors: |
Kim; JiWon;
(Gyeongsangbuk-do, KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Kim; JiWon |
Gyeongsangbuk-do |
|
KR |
|
|
Family ID: |
49455969 |
Appl. No.: |
14/442839 |
Filed: |
November 13, 2013 |
PCT Filed: |
November 13, 2013 |
PCT NO: |
PCT/KR2013/010276 |
371 Date: |
May 14, 2015 |
Current U.S.
Class: |
110/214 ;
110/254; 110/258; 110/259 |
Current CPC
Class: |
F23J 1/00 20130101; F23L
9/04 20130101; F23G 5/24 20130101; F23L 15/00 20130101; F23L 1/00
20130101; F23L 3/00 20130101; Y02E 20/34 20130101; F23B 10/02
20130101; F23B 80/00 20130101; F23J 1/06 20130101; F23G 5/32
20130101; F23B 40/04 20130101 |
International
Class: |
F23G 5/24 20060101
F23G005/24; F23J 1/06 20060101 F23J001/06; F23L 15/00 20060101
F23L015/00; F23G 5/32 20060101 F23G005/32; F23L 1/00 20060101
F23L001/00 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 14, 2012 |
KR |
10-2012-0128977 |
Claims
1. An area-specific centrifugal combustion apparatus using a flow
of combustion air, comprising: an upper combustion chamber through
which combustion air is supplied to a combustion chamber, and from
which a column of fire produced through combustion using the
combustion air is discharged; a lower combustion chamber coupled
with a lower part of the upper combustion chamber, wherein fuel is
supplied to the lower combustion chamber, and the lower combustion
chamber supplies the fuel into the combustion chamber such that the
fuel mixes with the combustion air for combustion; an air supply
pipe having one end divided into an upper supply pipe and a lower
supply pipe, the upper supply pipe diverging upward and the lower
supply pipe diverging downward, through which the combustion air is
supplied to the upper combustion chamber and the lower combustion
chamber; a rotary part connected to the lower combustion chamber,
wherein the rotary part allows the combustion air to maintain
centrifugal force when ignition proceeds in the lower combustion
chamber; a fuel supply provided on a lower end of the rotary part,
the fuel supply comprising a fixed quantity feeder allowing the
fuel to be supplied in a fixed amount to the lower combustion
chamber; and an ash treatment chamber disposed at one side of the
rotary part, the ash treatment chamber trapping and treating ash,
clinker, and airborne ash produced through incineration of the
fuel.
2. The area-specific centrifugal combustion apparatus according to
claim 1, wherein the upper combustion chamber comprises: an upper
combustion chamber outer tank having a combustion gas discharge
panel through which the column of fire is discharged, wherein the
upper combustion chamber outer tank is connected to the upper
supply pipe such that the combustion air that has been supplied
upwardly is able to flow; a redirecting part disposed on an Upper
end of the upper combustion chamber outer tank, the redirecting
part allowing the combustion air to flow downwardly; and an upper
combustion chamber inner tank disposed at a predetermined distance
from an inner circumference of the upper combustion chamber outer
tank to form an upper air supply, the upper supply pipe being fixed
to the upper combustion chamber inner tank in a communicating
manner.
3. The area-specific centrifugal combustion apparatus according to
claim 1, wherein the lower combustion chamber is connected to a
lower end of the upper combustion chamber, and comprises: a lower
combustion chamber outer tank, with a lower end thereof being
connected to the rotary part, wherein the lower combustion chamber
outer tank is connected to the lower supply pipe, causing the
combustion air supplied thereto to flow downwardly; and a lower
combustion chamber inner tank disposed inside the lower combustion
chamber outer tank to form a lower air supply, the lower supply
pipe being fixed to the lower combustion chamber inner tank in a
communicating manner.
4. The area-specific centrifugal combustion apparatus according to
claim 1, further comprising a regulating damper disposed at a
diverging point of the air supply pipe, the regulating damper being
able to regulate a temperature of air and an amount of air
supplied.
5. The area-specific centrifugal combustion apparatus according to
claim 1, wherein the rotary part comprises: a rotary housing
connected to a lower portion of the lower combustion chamber, the
rotary housing being coupled with props that fix the combustion
apparatus to a ground surface; a rotary body disposed within the
rotary housing, wherein the rotary body rotates forward and
backward to allow the combustion air preheated while moving
downward to maintain centrifugal force; and an ash treatment
chamber disposed between the rotary housing and the rotary body,
wherein the ash treatment chamber traps the ash, the clinker, and
the airborne ash produced after combustion.
6. The area-specific centrifugal combustion apparatus according to
claim 5, wherein the rotary body comprises: a rotary shaft
connected to a driving motor such that rotary shaft is rotatably
coupled with the rotary housing, thereby providing rotating force;
a guide rail connected to the rotary shaft, wherein the guide rail
guides a range of rotation of the rotary body; a bearing body
supporting rotation of the rotary shaft and the guide rail;
crushing blades disposed on a lower portion of the rotary body,
wherein the crushing blades crush the ash, the clinker, and the
airborne ash produced after completion of combustion; and a door
allowing the ash, the clinker, and the airborne ash crushed by the
crushing blades to be introduced to the ash treatment chamber.
7. The area-specific centrifugal combustion apparatus according to
claim 6, wherein, when the crushing blades of the rotary body
rotate forward, the clinker is crushed, the fuel is collected at a
center of the combustion chamber, and debris is continuously
discharged, and when the crushing blades of the rotary body rotate
backward, the debris, the ash, and the clinker are continuously
discharged to an ash chamber through the door, the area-specific
centrifugal combustion apparatus further comprising a bidirectional
discharge scraper discharging the debris, the ash, and the clinker
collected in the ash chamber to an ash container.
8. The area-specific centrifugal combustion apparatus according to
claim 1, wherein the fuel supply comprises a fuel input cone,
wherein an upper portion of the fuel input cone is in a funnel
shape such that a fixed amount of fuel uniformly spreads in a
hemispherical shape.
Description
TECHNICAL FIELD
[0001] The present invention relates to an area-specific
centrifugal combustion apparatus using a flow of combustion air.
More particularly, the present invention relates to an
area-specific centrifugal combustion apparatus using a flow of
combustion air able to perfectly burn low grade fuel containing
impurities like refined fuel by centrifugally dividing a space
using a strong air curtain rather than using a refractory wall. In
the area-specific centrifugal combustion apparatus, it is possible
to completely divide a fuel input area, a combustion air preheating
area, an ignition and combustion area, a separation and discharge
area for airborne ash and nonflammable matter, and a combustion
heat and gas discharge area from each other by adjusting a rate at
which combustion air is input, such that perfect combustion can
continuously proceed, and after the combustion, combustion
heat-containing gases are discharged after being completely
separated from airborne ash without contaminating heat-using
facilities, thereby improving heat efficiency.
BACKGROUND ART
[0002] In general, industrial facilities requiring industrial hot
water, steam, or high-temperature gas use a combustion apparatus
that generates heat energy by igniting and burning fuel within a
combustion chamber in order to obtain heat energy. In such
combustion apparatuses, solid fuel, such as refuse-derived fuel
(RDF) produced from domestic waste or waste plastic, is generally
used as fuel considering economic competitiveness and resource
recycling.
[0003] When waste is to be burned using such a combustion
apparatus, a flammable substance is input into a combustion chamber
of a combustion furnace and is subsequently ignited using an
ignition burner, and combustion air is blown into the combustion
chamber in the linear direction from respective upper, middle, and
lower sides of the combustion furnace, such that the flammable
substance burns with the combustion air.
[0004] However, in the combustion apparatus of the related art,
when combustion proceeds simply with cool air supplied from the
blower, combustion efficiency is low, and a variety of high calorie
substances, low calorie substances, and high substances are not
perfectly incinerated due to imperfect combustion. In particular, a
large amount of hazardous substances fatal to humans, such as
dioxins, are exhausted into the atmosphere, thereby causing
pollution including air pollution. Accordingly, the use of
conventional combustion furnaces raises severe social and
environmental issues.
[0005] In addition, in the combustion apparatus of the related art,
a combustion furnace for high-temperature flammable matter cannot
realize high-temperature combustion without expensive construction
costs or intensive labor. Specifically, a burner specially
fabricated for use in a high-speed and high-temperature environment
is disposed, high-pressure oxygen is injected, and the furnace wall
is formed of refractory bricks. The combustion chamber formed of a
metal material suffers from corrosion since it cannot withstand a
high-temperature environment. This consequently reduces the
lifespan of the combustion chamber.
[0006] Furthermore, in the combustion apparatus of the related art,
some structures, such as a stoker having a shaft tunnel, a
fluidized bed incinerator, a cyclone incinerator, and a rotary kiln
incinerator, cannot obtain perfect combustion without a refractory
wall that stores heat. However, clinker is inevitably produced,
thereby restricting continuous operation or lowering heat
efficiency. Although a centrifugal combustion method blocks heat
using a flow of combustion air without the refractory wall,
continuous operation is restricted due to various phenomena, such
as the production of clinker.
[0007] Accordingly, a centrifugal combustion apparatus as follows
was proposed.
[0008] FIG. 1 is a view illustrating a combustion apparatus of the
related art.
[0009] Referring to the combustion apparatus of the related art
illustrated in this figure, a flange 2 protrudes outward from the
lower end of a first combustion chamber 1. An upper outer tank 3
and a lower outer tank 4 are fixed to the upper surface and the
lower surface of the circumference of the flange 2. A fuel tank 6
is disposed below the first combustion chamber 1 such that the
upper surface of the fuel tank 6 is in close contact with the lower
surface of the flange 2 of the first combustion chamber 1. The fuel
tank 6 is opened upward, and a hydraulic jack 5 is coupled with the
lower portion of the fuel tank 6. A flange 9 is fixedly disposed on
the upper surface of the upper outer tank 3, and protrudes outward
from the lower end of a second combustion chamber 8 having an
exhaust tank 7 on the upper portion thereof. One or a plurality of
air blowers 11 is disposed on air supply pipes 10 connected to the
lower portions of the upper outer tank 3 in the tangential
direction of the air blowers 11 such that the air blowers 11
communicate with air inlet pipes 12 and air connecting pipes 13
connected to the upper portions of the lower outer tank 4. A
plurality of air regulating devices 16 is disposed on the upper
portions of the upper outer tank 3. Each of the air regulating
devices 16 includes an air regulator plate 14 positioned above the
space between the first combustion chamber 1 and the upper outer
tank 3 and a regulator rod 15 with which the air regulator plate 14
is fixedly and rotatably coupled.
DISCLOSURE
Technical Problem
[0010] Accordingly, the present invention has been made keeping in
mind the above problems occurring in the prior art, and an object
of the present invention is to perfectly burn low grade fuel
containing impurities like refined fuel by centrifugally dividing a
space using a strong air curtain without a refractory wall. It is
possible to completely divide a fuel input area, a combustion air
preheating area, an ignition and combustion area, a separation and
discharge area for airborne ash and nonflammable matter, and a
combustion heat and gas discharge area from each other by adjusting
a rate at which combustion air is input, such that perfect
combustion can continuously proceed.
[0011] Another object of the present invention is to separate
combustion heat-containing gas from ash, clinker, and airborne ash
within the combustion chamber after the combustion, such that clean
combustion heat and gas are introduced into heat-using facilities,
whereby pollution is prevented and heat efficiency is
maximized.
[0012] A further object of the present invention is to burn only
flammable matter while floating nonflammable matter by preheating
combustion air to an ignition temperature or higher and using the
negative pressure of an ignition chamber, even in the case of using
low grade fuel, such that airborne ash is perfectly separated and
discharged due to centrifugation using high-speed rotation, thereby
preventing clinker.
Technical Solution
[0013] In order to accomplish the above object(s), the present
invention provides an area-specific centrifugal combustion
apparatus using a flow of combustion air including: an upper
combustion chamber through which combustion air is supplied to a
combustion chamber, and from which a column of fire produced
through perfect combustion using the combustion air is discharged;
a lower combustion chamber coupled with a lower part of the upper
combustion chamber, wherein fuel is supplied to the lower
combustion chamber, and the lower combustion chamber supplies the
fuel into the combustion chamber such that the fuel mixes with the
combustion air for perfect combustion; an air supply pipe having
one end divided into an upper supply pipe and a lower supply pipe,
the upper supply pipe diverging upward and the lower supply pipe
diverging downward, through which the combustion air is supplied to
the upper combustion chamber and the lower combustion chamber; a
rotary part connected to the lower combustion chamber, wherein the
rotary part allows the combustion air to maintain centrifugal force
when ignition proceeds in the lower combustion chamber; a fuel
supply provided on a lower end of the rotary part, the fuel supply
comprising a fixed quantity feeder allowing the fuel to be supplied
in a fixed amount to the lower combustion chamber; and an ash
treatment chamber disposed at one side of the rotary part, the ash
treatment chamber trapping and treating ash, clinker, and airborne
ash produced through incineration of the fuel.
[0014] In addition, according to the invention, the upper
combustion chamber may include: an upper combustion chamber outer
tank having a combustion gas discharge panel through which the
column of fire is discharged, wherein the upper combustion chamber
outer tank is connected to the upper supply pipe such that the
combustion air that has been supplied upwardly is able to flow; a
redirecting part disposed on an upper end of the upper combustion
chamber outer tank, the redirecting part allowing the combustion
air to flow downwardly; and an upper combustion chamber inner tank
disposed at a predetermined distance from an inner circumference of
the upper combustion chamber outer tank to form an upper air
supply, the upper supply pipe being fixed to the upper combustion
chamber inner tank in a communicating manner.
[0015] Furthermore, according to the invention, the lower
combustion chamber may be connected to a lower end of the upper
combustion chamber. The lower combustion chamber may include: a
lower combustion chamber outer tank, with a lower end thereof being
connected to the rotary part, wherein the lower combustion chamber
outer tank is connected to the lower supply pipe, causing the
combustion air supplied thereto to flow downwardly; and a lower
combustion chamber inner tank disposed inside the lower combustion
chamber outer tank to form a lower air supply, the lower supply
pipe being fixed to the lower combustion chamber inner tank in a
communicating manner.
[0016] In addition, according to the invention, the area-specific
centrifugal combustion apparatus may further include a regulating
damper disposed at a diverging point of the air supply pipe, the
regulating damper being able to regulate a temperature of air and
an amount of air supplied.
[0017] Furthermore, according to the invention, the rotary part may
include: a rotary housing connected to a lower portion of the lower
combustion chamber, the rotary housing being coupled with props
that fix the combustion apparatus to a ground surface; a rotary
body disposed within the rotary housing, wherein the rotary body
rotates forward and backward to allow the combustion air preheated
while moving downward to maintain centrifugal force; and an ash
treatment chamber disposed between the rotary housing and the
rotary body, wherein the ash treatment chamber traps the ash, the
clinker, and the airborne ash produced after perfect
combustion.
[0018] In addition, according to the invention, the rotary body may
include: a rotary shaft connected to a driving motor such that
rotary shaft is rotatably coupled with the rotary housing, thereby
providing rotating force; a guide rail connected to the rotary
shaft, wherein the guide rail guides a range of rotation of the
rotary body; a bearing body supporting rotation of the rotary shaft
and the guide rail; crushing blades disposed on a lower portion of
the rotary body, wherein the crushing blades crush the ash, the
clinker, and the airborne ash produced after completion of
combustion; and an opening/closing door allowing the ash, the
clinker, and the airborne ash crushed by the crushing blades to be
introduced to the ash treatment chamber.
[0019] Furthermore, according to the invention, when the crushing
blades of the rotary body rotate forward, the clinker is crushed,
the fuel is collected at a center of the combustion chamber, and
debris is continuously discharged, and when the crushing blades of
the rotary body rotate backward, the debris, the ash, and the
clinker are continuously discharged to an ash chamber through the
opening/closing door. The area-specific centrifugal combustion
apparatus may further include a bidirectional-functional discharge
scraper discharging the debris, the ash, and the clinker collected
in the ash chamber to an ash container.
[0020] In addition, according to the invention, the fuel supply may
include a fuel input cone, wherein an upper portion of the fuel
input cone is in a funnel shape such that a fixed amount of fuel
uniformly spreads in a hemispherical shape.
Advantageous Effects
[0021] According to the present invention, it is possible to
perfectly burn low grade fuel containing impurities like refined
fuel by centrifugally dividing a space using a strong air curtain
without a refractory wall. Specifically, it is possible to
completely divide a fuel input area, a combustion air preheating
area, an ignition and combustion area, a separation and discharge
area for airborne ash and nonflammable matter, and a combustion
heat and gas discharge area from each other by adjusting a rate at
which combustion air is input, such that perfect combustion can
continuously proceed.
[0022] In addition, according to the present invention, it is
possible to separate combustion heat-containing gas from ash,
clinker, and airborne ash within the combustion chamber after the
combustion, such that clean combustion heat and gas are introduced
into heat-using facilities, whereby pollution is prevented and heat
efficiency is maximized.
[0023] Furthermore, according to the present invention, it is
possible to burn only flammable matter while floating nonflammable
matter by preheating combustion air to an ignition temperature or
higher and using the negative pressure of an ignition chamber, even
in the case of using low grade fuel, such that airborne ash is
perfectly separated and discharged due to centrifugation using
high-speed rotation, thereby preventing clinker.
DESCRIPTION OF DRAWINGS
[0024] FIG. 1 is a view illustrating a combustion apparatus of the
related art;
[0025] FIGS. 2 and 3 are views illustrating an area-specific
centrifugal combustion apparatus using a flow of combustion air
according to an exemplary embodiment of the invention;
[0026] FIGS. 4 and 5 are enlarged views of the key parts
illustrating the area-specific centrifugal combustion apparatus
using a flow of combustion air according to an exemplary embodiment
of the invention;
[0027] FIGS. 6 to 13 are cross-sectional views taken along lines
A-A' to H-H' illustrating the area-specific centrifugal combustion
apparatus using a flow of combustion air according to an exemplary
embodiment of the invention; and
[0028] FIG. 14 is a view illustrating the operation state of the
area-specific centrifugal combustion apparatus using a flow of
combustion air according to an exemplary embodiment of the
invention.
MODE FOR INVENTION
[0029] Reference will now be made in greater detail to an exemplary
embodiment of the present invention, an example of which is
illustrated in the accompanying drawings. Wherever possible, the
same reference numerals will be used throughout the drawings and
the description to refer to the same or like parts. In the
following description of the present invention, detailed
descriptions of known functions and components incorporated herein
will be omitted in the case that the subject matter of the present
invention is rendered unclear.
[0030] FIGS. 2 and 3 are views illustrating an area-specific
centrifugal combustion apparatus using a flow of combustion air
according to an exemplary embodiment of the invention, FIGS. 4 and
5 are enlarged views of the key parts illustrating the
area-specific centrifugal combustion apparatus using a flow of
combustion air according to an exemplary embodiment of the
invention, FIGS. 6 to 13 are cross-sectional views taken along A-A'
and H-H' illustrating the area-specific centrifugal combustion
apparatus using a flow of combustion air according to an exemplary
embodiment of the invention, and FIG. 14 is a view illustrating the
operation state of the area-specific centrifugal combustion
apparatus using a flow of combustion air according to an exemplary
embodiment of the invention.
[0031] As illustrated in the drawings, the area-specific
centrifugal combustion apparatus includes an upper combustion
chamber 310, a lower combustion chamber 210, a rotary part 410, a
fuel supply 510, and an ash treatment chamber 420. Combustion air
is rotated by a centrifugal force within the upper combustion
chamber 310, and a column of fire produced through perfect
combustion with the combustion air is discharged from the upper
combustion chamber 310. The lower combustion chamber 210 is coupled
with the lower part of the upper combustion chamber 310. The lower
combustion chamber 210 is configured such that fuel supplied to the
lower combustion chamber 210 mixes with the combustion air for
perfect combustion. The rotary part 410 is connected to the lower
combustion chamber 210, and regulates the combustion air to
maintain centrifugal force when ignition proceeds in the lower
combustion chamber 210. The fuel supply 510 supplies the fuel to
the lower combustion chamber 210. The ash treatment chamber 420
traps and treats ash, clinker, airborne ash, and the like produced
through incineration of the fuel during the combustion.
[0032] The upper combustion chamber 310 includes an upper
combustion chamber outer tank 318, upper combustion chamber inner
tank 316, a combustion gas discharge panel 314, and a coupling
flange 320.
[0033] The upper combustion chamber outer tank 318 is a component
forming the outer shape of the area-specific centrifugal combustion
apparatus. The upper combustion chamber outer tank 318 is in a
cylindrical shape opened in the top-bottom direction, and is
configured to prevent combustion air supplied thereto from leaking.
The upper combustion chamber outer tank 318 having this
configuration is connected to an upper air supply pipe 332 of an
air supply pipe 330 through which the combustion air is supplied to
the upper combustion chamber outer tank 318. The upper combustion
chamber outer tank 318 allows the combustion air to flow
upwardly.
[0034] The upper combustion chamber outer tank 318 having this
configuration has a combustion gas discharge panel 314 on the upper
end through which the column of fire produced through the perfect
combustion can be discharged. A gas discharge port 312 through
which the column of fire is vertically discharged is formed in the
center of the combustion gas discharge panel 314.
[0035] In addition, a redirecting part 350 is provided on the upper
end of the upper combustion chamber outer tank 318. The redirecting
part 350 allows the combustion air supplied into the combustion
chamber through an upper air supply 338 to flow downwardly.
[0036] The upper combustion chamber inner tank 316 is in a
cylindrical shape, and is disposed at a predetermined distance from
the inner circumference of the upper combustion chamber outer tank
318. The coupling flange 320 is provided on the lower end of the
upper combustion chamber inner tank 316. The coupling flange 320 is
coupled with the upper combustion chamber outer tank 318, and
allows the upper air supply pipe 332 of the air supply pipe 330 to
be fixed in a communicating manner.
[0037] Here, the air supply pipe 330 is configured such that one
end thereof is divided into an upper supply pipe 332 diverging
upward and a lower supply pipe 334 diverging downward, whereby the
combustion air can be supplied to the upper combustion chamber 310
and the lower combustion chamber 210.
[0038] In addition, a regulating damper 336 is provided at the
diverging point of the air supply pipe 330. The damper 336 can
regulate the temperature of the air and the amount of the air
supplied.
[0039] The upper air supply 338 is disposed between the inner
circumference of the upper combustion chamber outer tank 318 and
the outer circumference of the upper combustion chamber inner tank
316, such that the combustion air is supplied to and flows upwardly
through the upper air supply 338.
[0040] The lower combustion chamber 210 is a component connected to
the lower end of the upper combustion chamber 310. The lower
combustion chamber 210 is connected to the lower supply pipe 334 of
the air supply pipe 330 such that the combustion air is supplied to
the combustion chamber through the lower combustion chamber.
[0041] The lower combustion chamber 210 includes a lower combustion
chamber outer tank 218 and a lower combustion chamber inner tank
216. A connecting flange 220 is provided on the lower end of the
lower combustion chamber outer tank 218 such that the connecting
flange is integrally connected to the rotary part 410. The lower
combustion chamber inner tank 216 is disposed inside the lower
combustion chamber outer tank 218, thereby forming a lower air
supply 238.
[0042] Due to the upper combustion chamber 310 and the lower
combustion chamber 210 according to the invention configured as
above, when combustion air is supplied under a predetermined input
pressure through the upper air supply 338, the combustion air flows
upwardly while rotating in the upper air supply 338 at a velocity
with respect to the input pressure. When the combustion air
collides against the redirecting part 350, the direction of the
combustion air is changed, and the combustion air flows downwardly
toward the lower combustion chamber 210. As fuel burns within the
combustion chamber due to ignition, the downwardly-flowing
combustion chamber is preheated to a predetermined temperature.
[0043] In addition, the combustion air input into the lower air
supply 238 of the lower combustion chamber 210 also flows
downwardly while rotating within the lower air supply 238 at a
velocity with respect to the input pressure. At this time, within a
rotary body 440 of the rotary part 410, the combustion air mixes
with the above-described preheated combustion air flowing
downwardly from the upper combustion chamber 310.
[0044] That is, the temperature of the air preheated in the upper
combustion chamber 310 is adjusted using the combustion air
supplied through the lower combustion chamber 210. The temperature
of the preheated air can be adjusted in response to the operation
of the regulating damper 336.
[0045] In addition, the mixed combustion air rotates and flows to
the rotary part 410 disposed in the lower part of the lower
combustion chamber 210. The combustion air collides against a
bottom plate 441 of the combustion chamber, moves upward while
rotating, and completely mixes with the fuel.
[0046] The rotary part 410 includes a rotary housing 412, the
rotary body 440, and an ash treatment chamber 420. The rotary
housing 412 is connected to the lower portion of the lower
combustion chamber 210. Props 102 fixing the combustion apparatus
to the ground are coupled to the rotary housing 412. The rotary
body 440 is disposed within the rotary housing 412. When the fuel
is burning, the rotary body 440 rotates in a predetermined
direction within the rotary housing 412, and imparts centrifugal
force to the combustion air preheated while moving downward from
the upper combustion chamber 310 and the lower combustion chamber
210. The ash treatment chamber 420 is disposed between the rotary
housing 412 and the rotary body 440, and traps ash, clinker,
airborne ash, and the like produced after perfect combustion.
[0047] The rotary body 440 has a power transmission means by which
the rotary body is rotatably coupled with the rotary housing 412.
The power transmission means includes a rotary shaft 446 connected
to a driving motor, such as a motor, to provide rotating force, a
guide rail 444 with one end being connected to the rotary shaft
446, the guide rail 444 guiding the rotary body 440 to reliably
rotate based on the rotating force of the rotary shaft 446, and a
bearing body 442 supporting the rotation of the rotary shaft 446
and the guide rail 444.
[0048] Crushing blades 470 are disposed on the lower portion of the
rotary body 440. The crushing blades 470 crush ash, clinker,
airborne ash, and the like produced after the completion of
combustion. An opening/closing door 430 allows the ash, clinker,
airborne ash, and the like crushed by the crushing blades 470 to be
introduced to the ash treatment chamber 420 therethrough.
[0049] The opening/closing door 430 is configured such that the
opening/closing door automatically opens and closes depending on
the direction of rotation of the rotary body 440. In the case of
forward rotation, ash and clinker are discharged by centrifugation
through the bottom plate 441 of the combustion chamber formed on
the lower inner circumference of the rotary body 440, and the fuel
pushed by the crushing blades 470 is collected at the center. When
the rotary body 440 rotates in the backward direction, the ash, the
clinker, and the like are pushed outward by the crushing blades 470
and are introduced into the ash treatment chamber 420 as the
automatic opening/closing door 430 is opened.
[0050] In addition, impurities, such as ash, airborne ash, and
clinker, are trapped in the ash treatment chamber 420. A discharge
scraper 450 allows the impurities to be continuously discharged
from the combustion chamber. When the trapped impurities are
accumulated in a predetermined amount, the discharge scraper 450
continuously discharges the impurities through an ash outlet port
421 to an ash container 106.
[0051] In addition, a machine room protector plate 413 is provided
within the ash treatment chamber 420. The machine room protector
plate 413 prevents the trapped impurities from reentering the
combustion chamber.
[0052] The fuel supply 510 is disposed such that a predetermined
space is defined between the fuel supply 510 and the rotary housing
412 of the rotary part 410. The fuel supply 510 has a fixed
quantity feeder 530, whereby a fixed amount of fuel can be
supplied.
[0053] In addition, the fuel supply 510 has a fuel input cone 512.
The upper portion of the fuel input cone 512 is in a funnel shape
such that a fixed amount of fuel can uniformly spread in a
hemispherical shape. The outer circumference of the upper end of
the fuel input cone 512 is positioned at the bottom, flush with an
ash discharge port 460. This allows the supplied fuel to mix with
the preheated air without leakage, whereby perfect combustion is
enabled.
[0054] In the area-specific centrifugal combustion apparatus using
a flow of combustion air according to the invention as configured
above, the combustion air preheated through the upper combustion
chamber 310 and the lower combustion chamber 210 flows downwardly
while rotating along the inner circumference of the rotary part
410, is redirected upward after colliding against the bottom plate
441, and mixes with the fuel spreading in the hemispherical shape
from the fuel supply 510, thereby forming a first combustion area.
The combustion air that has moved downwardly to the middle portion
mixes with the first combustion area, thereby forming a second
combustion area. The combustion air enters the gas discharge port
312 and mixes with the remaining combustion air supplied from the
upper combustion chamber 310, thereby forming a third combustion
area.
[0055] That is, the combustion apparatus according to the invention
forms the first to third combustion areas, whereby fuel can
perfectly burn. Centrifugal force is maintained by removing or
reducing obstacles against rotating force in response to the
rotation of the rotary part 410. A flame occurring during the
combustion forms a column of fire, which is discharged through the
gas discharge port 312.
[0056] In the combustion apparatus according to the invention as
above, as a reaction to the high pressure of the combustion air
rotating at a high speed adjacent to the inner walls of the upper
combustion chamber 310 and the lower combustion chamber 210, strong
negative pressure directed into the gas discharge port 312 is
formed in the central portion of the combustion chamber.
[0057] In addition, combustion heat-containing gas and nonflammable
debris separated from the combustion air are separated from each
other, thereby making the outer surface of the air supply clean.
The combustion heat-containing gas and the nonflammable debris are
sucked into a column of fire within the gas discharge port 312 of
the combustion gas discharge panel 314 disposed in the central
upper portion of the combustion chamber while sharply rotating
together with the remaining unused combustion air. Consequently,
perfect combustion is performed, and a column of fire extending
upward in the perfect linear shape is formed.
[0058] At this time, before the airborne ash is discharged from the
combustion chamber, centrifugation is performed by high-speed
rotating force within the column of fire. Consequently, the ash is
separated from the column of fire by centrifugal force, moves
toward the inner wall of the combustion chamber, and is carried on
the combustion air that flows downwardly while sharply rotating
along the upper combustion chamber inner tank 316 and the lower
combustion chamber inner tank 216. In this manner, the ash is
separately discharged to the ash treatment chamber 420.
[0059] In addition, A-A' and B-B' cross-sections illustrated in
FIGS. 6 and 7 indicate the boundary between the first combustion
area and the second combustion area. These figures illustrate that,
after first combustion has occurred in the first combustion area,
combustion migrates to the second combustion area through the
boundary.
[0060] Furthermore, FIGS. 8 and 9 illustrate C-C' and D-D'
cross-sections indicating the portions of the first combustion area
where combustion is performed. The direction in which airborne ash
and preheated air rotate in the first combustion area is
indicated.
[0061] In addition, FIGS. 10 and 11 illustrate E-E' and F-F'
cross-sections, in which the airborne ash and the preheated air are
rotating in the upper end of the fuel supply part 510.
[0062] According to the present invention as set forth above, it is
possible to perfectly burn low grade fuel containing impurities
like refined fuel by centrifugally dividing a space using a strong
air curtain without a refractory wall. Specifically, it is possible
to completely divide a fuel input area, a combustion air preheating
area, an ignition and combustion area, a separation and discharge
area for airborne ash and nonflammable matter, a combustion heat
and gas discharge area from each other by adjusting a rate at which
combustion air is input, such that perfect combustion can
continuously proceed. It is possible to separate combustion
heat-containing gas from ash, clinker, and airborne ash within the
combustion chamber after the combustion, such that clean combustion
heat and gas are introduced into heat-using facilities, whereby
pollution is prevented and heat efficiency is maximized. It is
possible to burn only flammable matter while floating nonflammable
matter by preheating combustion air to an ignition temperature or
higher and using the negative pressure of an ignition chamber even
in the case of using low grade fuel, such that airborne ash is
perfectly separated and discharged due to centrifugation using
high-speed rotation, thereby preventing clinker.
[0063] In addition, the reference numeral "104" that has not been
mentioned in the detailed description of the invention refers to a
column of fire.
[0064] The foregoing descriptions and the accompanying drawings
have been presented in order to explain the certain principles of
the present invention. A person skilled in the art to which the
present invention relates can make many modifications and
variations without departing from the principle of the invention.
The foregoing embodiments disclosed herein shall be interpreted as
illustrative only but not as limitative of the principle and scope
of the invention. It should be understood that the scope of the
invention shall be defined by the appended Claims and all of their
equivalents fall within the scope of the invention.
* * * * *