CN104728842B - Forced full-premixing fuel gas combustion device enabling fuel gas to be completely combusted - Google Patents
Forced full-premixing fuel gas combustion device enabling fuel gas to be completely combusted Download PDFInfo
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- CN104728842B CN104728842B CN201510065004.2A CN201510065004A CN104728842B CN 104728842 B CN104728842 B CN 104728842B CN 201510065004 A CN201510065004 A CN 201510065004A CN 104728842 B CN104728842 B CN 104728842B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/60—Devices for simultaneous control of gas and combustion air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2203/00—Gaseous fuel burners
- F23D2203/007—Mixing tubes, air supply regulation
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The invention discloses a forced full-premixing fuel gas combustion device enabling fuel gas to be completely combusted. The forced full-premixing fuel gas combustion device comprises a combustion head, a gas mixing structure, a fan and a fuel gas and air proportion control valve, wherein the fan comprises an air inlet and an air outlet, the gas mixing structure is of a barrel shape with two open ends and comprises an inner barrel wall and an outer barrel wall mutually connected, an annular inner cavity and an annular external cavity opening towards one end of the fan are arranged between the inner barrel wall and the outer barrel wall, one end of the gas mixing structure is connected with the air outlet, the other end of the gas mixing structure is connected with the combustion head, a fuel gas inlet is formed in the outer peripheral wall of the annular inner cavity, and a first fuel gas outlet is formed in the inner peripheral wall of the annular inner cavity. The forced full-premixing fuel gas combustion device has the advantages of being capable of carrying out full premixing on fuel gas and air, adjusting the fuel gas amount through air pressure, and more conveniently adjusting the fuel gas and air mixing proportion.
Description
Technical field
The present invention relates to gas-fired equipment technical field, especially relate to one kind and can utilize blast regulating gas amount, and adjustable
The pressure fully pre-mixing gas combustion burner of the made combustion gas of gas fuel saving and air mixture ratio burning completely.
Background technology
Combustion gas must be mixed with air can be implemented to burn, and can divide combustion gas with the hybrid mode of air and degree by combustion gas
For diffusion type burning, partially premixed burning and fully premixed combustion.The air being pre-mixed before combustion gas is lighted is referred to as once
Air, proceeds oxidation reaction with surrounding air after combustion gas is lighted, and this partial air is referred to as auxiliary air.Diffusion type burns
No primary air, burning required air takes from auxiliary air completely, is characterized in that flame root You Liyan area, flame are longer and fire
Burning is insufficient, the thermal efficiency is low, no tempering is inclined to, and is generally used in commercial cooking stove and industrial combustion system, is not suitable for domestic
Burner.Partially premixed burning is also referred to as atmospheric burning type, is produced when nozzle sprays using the combustion gas with certain pressure
Primary air is introduced and mixed by kinetic energy, and gaseous mixture flows out from fire hole and is ignited, due to partly-premixed primary air
Amount is usually the 60%-65% of theoretical air requirement, so the auxiliary air around the gaseous mixture continuation being ignited and fire hole
Carry out oxidation reaction, to realize burning completely.Partially premixed burning has the internal flame conical surface of primary air formation and secondary sky
The flame envelope conical surface that gas is formed, the top of the internal flame conical surface is flame temperature highest region, is characterized in that flame is clear, burns and relatively fill
Point, the thermal efficiency is higher, CO emission is relatively low in combustion product gases, but incline when combustion system parameter did not have tempering at that time
To this combustion system has been widely used in civil kitchen range and gas heater.
Fully premixed combustion is a kind of brand-new combustion system, and the primary air amount of premix reaches theoretical air requirement
1.1-1.3 times (i.e. coefficient of excess air is 1.1-1.3), this combustion system is without auxiliary air, no the flame envelope conical surface, its feature
Be even flame and clear, burning fully, the thermal efficiency is high, carbon monoxide and nitrogen oxide emission are extremely low in combustion product gases.Entirely
Premix combustion is divided into normal pressure full premix combustion by premix mode and forces full premix combustion, and the full premix of normal pressure is commonly used to belong to
The infrared combustion system of plane burning, realizes full premix by nozzle, ejection system and special porous burner plate, forces entirely pre-
Mix and be commonly used to high-power combustion system, the required primary air of premix is completely dependent on blower fan system, and by gas-air ratio
Example valve controls the mixing ratio of combustion gas and air.Abroad, full premix is forced to be widely used in as gas-heating equipment etc.
In domestic gas appliance and in the industrial circle such as printing and dyeing, glass.
Chinese patent mandate publication number: cn101398176b, authorizes publication date on May 22nd, 2013, discloses a kind of complete
Pre-mixing gas combustion burner device, including the fixing device of burner and installation burner, the periphery of burner is provided with by case
The mixed air cavity being formed, is additionally provided with partial pressure dividing plate with holes between burner and case, has gap between partial pressure dividing plate and case；
The cause not of uniform size of the aperture on described partial pressure dividing plate, opens larger hole in the less place of blast, opens in the big place of blast
Smaller hole；Described burner is perforated plate-like structure, is provided with multiple deep holes, and the hole depth of this deep hole is much larger than aperture.
The weak point of this invention is, single function is it is impossible to the mixed proportion of regulating gas gas output and combustion gas and air.
Content of the invention
The goal of the invention of the present invention is to overcome fully pre-mixing gas combustion burner device of the prior art cannot adjust combustion
The deficiency of the mixed proportion of gas gas output and combustion gas and air, there is provided one kind can utilize blast regulating gas amount, and scalable
The pressure fully pre-mixing gas combustion burner of the made combustion gas of combustion gas and air mixture ratio burning completely.
To achieve these goals, the present invention employs the following technical solutions:
A kind of pressure fully pre-mixing gas combustion burner making combustion gas burning completely, including combustion head, gas mixed nub structure, wind
Machine, combustion gas and AIR Proportional control valve；Blower fan includes air inlet and air outlet, and described gas mixed nub structure is in the tubular of both ends open,
Gas mixed nub structure includes interconnective inner tube wall and outer tube wall, is provided with annular cavity and to blower fan one between inner tube wall and outer tube wall
The annular outer-cavity of end opening；Gas mixed nub structure one end is connected with air outlet, and the gas mixed nub structure other end is connected with combustion head；In annular
The periphery wall in chamber is provided with fuel gas inlet, and the internal perisporium of annular cavity is provided with the first gas outlet；
Described combustion gas and AIR Proportional control valve include valve body, the gas inlet chamber in valve body, blast inlet chamber and
Inner chamber；Blast inlet chamber is connected with the periphery wall of annular outer-cavity by breather, and valve body is provided with and gas inlet chamber UNICOM
Gas inlet passage；The connecting portion of gas inlet chamber and inner chamber is provided with valve port rubber cushion, valve port rubber cushion with internal chamber wall
And the main valve valve rod upper end being slidably connected with internal chamber wall is connected, main valve valve rod lower end is connected with main valve epithelium, main valve epithelium
It is connected with the closing of internal chamber wall bottom and inner chamber is divided into main valve epithelium epicoele and main valve epithelium cavity of resorption；Internal chamber wall passes through main valve bullet
Spring is connected with main valve epithelium；Main valve epithelium epicoele is provided with the second gas outlet being connected with fuel gas inlet；
Gas inlet passage is connected with main valve epithelium cavity of resorption by being provided with the cavity of resorption inlet channel of main valve flow nipple, main valve
Epithelium cavity of resorption is connected with blast inlet chamber by being provided with the cavity of resorption outlet passageway of auxiliary valve flow nipple；It is provided with blast inlet chamber
Auxiliary valve epithelium, auxiliary valve spring and regulation plug screw；The closing of auxiliary valve epithelium and blast inlet chamber is connected and by blast inlet chamber
It is divided into upper and lower two parts, blast inlet chamber upper end is provided with opening, opening is provided with the column of both ends open, adjust plug screw and erect
Cylinder inwall is detachably connected, and adjusts plug screw and passes through to assist valve spring to be connected with auxiliary valve epithelium top；Cavity of resorption outlet passageway upper
End is located on the blast inlet chamber below auxiliary valve epithelium, and main valve epithelium epicoele passes through auxiliary valve gas outlet passage and auxiliary valve
Blast inlet chamber below epithelium is connected.
The operation principle of the present invention is: air enters blower fan from the air inlet of blower fan, simultaneously by combustion gas and AIR Proportional control
The combustion gas out of second gas outlet of valve processed is entered in the annular cavity of gas mixed nub structure by the fuel gas inlet of gas mixed nub structure, and
From the first gas outlet out, combustion gas and air are mixed and fed into combustion in the tubular gas mixing pipe that the inner tube wall of gas mixed nub structure is constituted
Burn head；Enter the combustion gas of combustion head and air have passed through the full premix of pressure, and the ratio between combustion gas and air capacity can be adjusted
Section, the gaseous mixture scale of construction of the bigger gas quantity of blast more big i.e. entrance combustion head is bigger, and the air output of blower fan is the motor with blower fan
Voltage be directly proportional, voltage more Wind Volume is bigger, can adjust the air output of blower fan by being pre-adjusted the voltage of blower fan, and
Adjust the gaseous mixture scale of construction entering combustion head further；The gaseous mixture scale of construction of the voltage bigger entrance combustion head of blower fan is bigger.
Combustion gas is as follows with the operation principle of AIR Proportional control valve:
Before accessing combustion gas, valve port rubber cushion is to close, and after combustion gas enters gas inlet passage, a road reaches valve port rubber cushion
The gas inlet chamber of top, the cavity of resorption inlet channel through having main valve flow nipple for another road enters main valve epithelium cavity of resorption and through cavity of resorption
Outlet passageway enters the auxiliary valve flow nipple of blast inlet chamber, and the power that below main valve epithelium, gaseous-pressure produces overcomes main spool spring
Power makes to move on main valve epithelium, and its pressure value depends on flowing through the flow of auxiliary valve flow nipple, and this flow value can be adjusted by adjustment
Plug screw, to change, makes main valve epithelium be in zero-pressure pressure regulator state；Air-fuel ratio can be changed by adjusting plug screw；
In the presence of blower fan, the pressure above auxiliary valve epithelium increases the combustion gas stream quantitative change flowing through auxiliary valve flow nipple
Little, below main valve epithelium, gaseous-pressure raises and promotes valve port rubber cushion to move up, and combustion gas is arrived by gas outlet through valve port rubber cushion
Reach gas mixed nub structure, blast is bigger, the gas quantity of output is bigger；
When gaseous-pressure is for rated value, poised state at auxiliary valve epithelium, when gaseous-pressure is more than rated value, combustion gas
Increased by the flow of auxiliary valve flow nipple, and reach gas mixed nub structure through auxiliary valve gas outlet passage, the second gas outlet, make
Gaseous-pressure below main valve epithelium reduces, and valve port rubber cushion aperture reduces, and the gas quantity of output reduces therewith, thus playing voltage stabilizing
Effect.Adjust the position of plug screw by adjustment, auxiliary valve combustion gas output bias can be changed, to optimize coefficient of excess air.
Therefore, the present invention has and combustion gas and air can be premixed entirely, available blast regulating gas amount, regulating gas
And air mixture ratio is convenient；Fuel gas buring is abundant, the thermal efficiency is high, carbon monoxide and discharged nitrous oxides in combustion product gases
Measure extremely low feature.
Preferably, being provided with horizontal baffle between gas inlet chamber and inner chamber, it is recessed that horizontal baffle is provided with downward spheric
Sunken groove, bottom portion of groove is provided with opening；The lower surface of valve port rubber cushion is in the dome shape with fit depressions, and inner chamber is provided with l
Shape bracing frame, main valve valve rod passes through vertical core on l shape bracing frame, being connected with main valve valve rod of valve port rubber cushion lower surface
Position is provided with annular boss.
Preferably, described auxiliary valve flow nipple includes the cylinder of interconnective upper and lower end opening and on cylinder
Annular slab, the hole in the middle part of annular slab is connected with cylinder；Annular slab is connected with the epithelium pressing plate of auxiliary valve epithelium.
Preferably, described blower fan includes spiral case, wind wheel and the brushless direct-current with several wind wings in spiral case
Motor；The rotating shaft of brshless DC motor is connected with wind wheel, and the air inlet of described blower fan is located on spiral case.
Preferably, described combustion head includes the burner body of upper end open, the flow distribution plate in burner body top and sets
The burning web being made up of weaving metallic fibers in burner body upper end；Burning web is connected with burner body by hold-down ring, burning
Body bottom is connected with the air outlet of blower fan；Described flow distribution plate is flat porous resistance to oxidation corrosion resistant plate.
Preferably, fuel gas inlet and the second gas outlet are connected by airway, airway is provided with choke valve.Section
The gas outlet amount that manual adjustment enters gas mixed nub structure is easy in the setting of stream valve.
Preferably, main valve flow nipple is located at the air inlet of cavity of resorption inlet channel.
Therefore, the invention has the following beneficial effects:
(1) combustion gas and air can be premixed entirely, available blast regulating gas amount, regulating gas and air ratio
Example is convenient；
(2) fuel gas buring is abundant, the thermal efficiency is high, carbon monoxide and nitrogen oxide emission are extremely low in combustion product gases.
Brief description
Fig. 1 is a kind of structural representation of the present invention；
Fig. 2 is a kind of structural representation of the gas mixed nub structure of the present invention；
Fig. 3 is a kind of structural representation with AIR Proportional control valve for the combustion gas of the present invention；
Fig. 4 is a kind of structural representation of the combustion head of the present invention.
In figure: combustion head 1, gas mixed nub structure 2, blower fan 3, combustion gas and AIR Proportional control valve 4, burner body 11, flow distribution plate 12,
Burning web 13, inner tube wall 21, outer tube wall 22, annular cavity 23, breather 24, fuel gas inlet 25, the first gas outlet 26, air intake
Mouth 31, air outlet 32, spiral case 33, wind wheel 34, valve body 41, gas inlet chamber 42, blast inlet chamber 43, inner chamber 44, gas inlet
Passage 45, gas mixing pipe 46, valve port rubber cushion 47, main valve valve rod 48, main valve epithelium 49, airway 51, choke valve 52, horizontal baffle
61st, groove 62, l shape bracing frame 63, annular boss 64, the second gas outlet 410, cavity of resorption inlet channel 411, cavity of resorption outlet passageway
412nd, auxiliary valve epithelium 431, auxiliary valve spring 432, adjust plug screw 433, opening 434, column 435, main valve epithelium epicoele 441,
Main valve epithelium cavity of resorption 442, main spool spring 443, main valve flow nipple 451, auxiliary valve flow nipple 461, auxiliary valve gas outlet passage
471st, ventilation interface tube 472, annular outer-cavity 473.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
Embodiment as shown in Figure 1 is a kind of pressure fully pre-mixing gas combustion burner making combustion gas burning completely, including
Combustion head 1, gas mixed nub structure 2, blower fan 3, combustion gas and AIR Proportional control valve 4；Blower fan includes air inlet 31 and air outlet 32, mixed gas
Structure is in the tubular of both ends open, and gas mixed nub structure includes interconnective inner tube wall 21 and outer tube wall 22, inner tube wall and outer tube wall
Between be provided with annular cavity 23 and the annular outer-cavity 473 to blower fan one end open；Gas mixed nub structure one end is connected with air outlet, mixed gas
The structure other end is connected with combustion head；The periphery wall of annular cavity is provided with fuel gas inlet 25, on the internal perisporium of annular cavity
It is provided with the first gas outlet 26；
As shown in figure 3, combustion gas and AIR Proportional control valve include valve body 41, the gas inlet chamber 42 in valve body, wind
It is pressed into air cavity 43 and inner chamber 44；Blast inlet chamber is connected with the periphery wall of annular outer-cavity by breather 24, breather with set
Ventilation interface tube 472 on the periphery wall of annular outer-cavity is connected, and valve body is provided with and is entered with the combustion gas of gas inlet chamber UNICOM
Gas passage 45；The connecting portion of gas inlet chamber and inner chamber is provided with valve port rubber cushion 47, valve port rubber cushion with internal chamber wall and with
Main valve valve rod 48 upper end that internal chamber wall is slidably connected is connected, and main valve valve rod lower end is connected with main valve epithelium 49, main valve epithelium
It is connected with the closing of internal chamber wall bottom and inner chamber is divided into main valve epithelium epicoele 441 and main valve epithelium cavity of resorption 442；Internal chamber wall passes through
Main spool spring 443 is connected with main valve epithelium；Main valve epithelium epicoele is provided with the second gas outlet being connected with fuel gas inlet
410；
Gas inlet passage is connected with main valve epithelium cavity of resorption by being provided with the cavity of resorption inlet channel 411 of main valve flow nipple,
Main valve epithelium cavity of resorption is connected with blast inlet chamber by being provided with the cavity of resorption outlet passageway 412 of auxiliary valve flow nipple；Blast air inlet
It is provided with auxiliary valve epithelium 431, auxiliary valve spring 432 in chamber and adjust plug screw 433；Auxiliary valve epithelium is with the closing of blast inlet chamber even
Connect and blast inlet chamber is divided into upper and lower two parts, blast inlet chamber upper end is provided with opening 434, and opening is provided with both ends open
Column 435, adjust plug screw and be connected with column inner thread, adjust plug screw and pass through to assist valve spring and auxiliary valve epithelium top to connect
Connect；The upper end of cavity of resorption outlet passageway is located on the blast inlet chamber below auxiliary valve epithelium, and main valve epithelium epicoele passes through auxiliary valve
Gas outlet passage 471 is connected with the blast inlet chamber below auxiliary valve epithelium.
It is provided with horizontal baffle 61, horizontal baffle is provided with the groove of downward spheric depression between gas inlet chamber and inner chamber
62, bottom portion of groove is provided with opening；The lower surface of valve port rubber cushion is in the dome shape with fit depressions, and inner chamber is provided with l shape and supports
Frame 63, main valve valve rod passes through the vertical core on l shape bracing frame, the position being connected with main valve valve rod of valve port rubber cushion lower surface
It is provided with annular boss 64.
Auxiliary valve flow nipple 461 includes cylinder and the annular slab on cylinder of interconnective upper and lower end opening, ring
Hole in the middle part of shape plate is connected with cylinder；Annular slab is connected with the epithelium pressing plate of auxiliary valve epithelium.
As shown in Fig. 2 the first gas outlet is located on the annular cavity internal perisporium of blower fan, described fuel gas inlet is located at
On the annular cavity periphery wall of combustion head；The cross-sectional area of the inner tube wall near blower fan one end is less than the inner tube wall other end
Cross-sectional area.In the present embodiment, the latus rectum of gas mixed nub structure blast entrance isThe cone angle of gas mixing pipe is 9 °, gas outlet
Aisle spare can be adjusted
As shown in figure 1, blower fan includes spiral case 33, wind wheel 34 and the brushless dc with 13 wind wings in spiral case
Machine；The rotating shaft of brshless DC motor is connected with wind wheel, and the air inlet of blower fan is located on spiral case.
In the present embodiment, rotor diameter isThe no-load speed of brshless DC motor is 7000 revs/min, input
Power is 24w, and input voltage is 6-24vdc, and blower press is 1100pa.
As shown in figure 4, combustion head includes the burner body 11 of upper end open, the flow distribution plate 12 in burner body top and sets
The burning web 13 being made up of weaving metallic fibers in burner body upper end；Burning web is connected with burner body by hold-down ring 14,
Burner body bottom is connected with the air outlet of blower fan；Flow distribution plate is flat porous resistance to oxidation corrosion resistant plate.
Used in the present embodiment, burner body is sphere porous resistance to oxidation corrosion resistant plate, and active combustion face is a diameter ofSingle fire hole area is 0.5mm2, and percent opening is 12.8%, and surface calorific intensity is that during 80w/cm2, input power is
6.3kw, surface calorific intensity is that during 160w/cm2, input power is 12.6kw.
Fuel gas inlet and the second gas outlet are connected by airway 51, and airway is provided with choke valve 52.
Air enters blower fan from the air inlet of blower fan, is gone out by the second gas outlet of combustion gas and AIR Proportional control valve simultaneously
The combustion gas coming is entered in the annular cavity of gas mixed nub structure by the fuel gas inlet of gas mixed nub structure, and from the first gas outlet out,
Combustion gas and air are mixed and fed into combustion head in the tubular gas mixing pipe that the inner tube wall of gas mixed nub structure is constituted；Enter the combustion of combustion head
Gas and air have passed through the full premix of pressure, and the ratio between combustion gas and air capacity can be by the position of change regulation plug screw
Change, the bigger gas quantity of blast is more big enter combustion head the gaseous mixture scale of construction bigger, thus realizing tolerance and tolerance ratio
Adjust.The air output of blower fan is to be directly proportional to the voltage of the motor of blower fan, and voltage more Wind Volume is bigger, by being pre-adjusted wind
The voltage of machine can adjust the air output of blower fan, and a step section of going forward side by side enters the gaseous mixture scale of construction of combustion head；The voltage of blower fan is got over
The gaseous mixture scale of construction of big entrance combustion head is bigger.
Combustion gas is as follows with the operation principle of AIR Proportional control valve:
Before accessing combustion gas, valve port rubber cushion is to close, and after combustion gas enters gas inlet passage, a road reaches valve port rubber cushion
The gas inlet chamber of top, the cavity of resorption inlet channel through having main valve flow nipple for another road enters main valve epithelium cavity of resorption and through cavity of resorption
Outlet passageway enters the auxiliary valve flow nipple of blast inlet chamber, and the power that below main valve epithelium, gaseous-pressure produces overcomes main spool spring
Power makes to move on main valve epithelium, and its pressure value depends on flowing through the flow of auxiliary valve flow nipple, and this flow value can be adjusted by rotation
Plug screw, makes regulation plug screw move up and down to change, and makes main valve epithelium be in zero-pressure pressure regulator state；
In the presence of blower fan, the pressure above auxiliary valve epithelium increases the combustion gas stream quantitative change flowing through auxiliary valve flow nipple
Little, below main valve epithelium, gaseous-pressure raises and promotes valve port rubber cushion to move up, and combustion gas is arrived by gas outlet through valve port rubber cushion
Reach gas mixed nub structure, blast is bigger, the gas quantity of output is bigger；
When gaseous-pressure is for rated value, poised state at auxiliary valve epithelium, when gaseous-pressure is more than rated value, combustion gas
Increased by the flow of auxiliary valve flow nipple, and reach gas mixed nub structure through auxiliary valve gas outlet passage, the second gas outlet, make
Gaseous-pressure below main valve epithelium reduces, and valve port rubber cushion aperture reduces, and the gas quantity of output reduces therewith, thus playing voltage stabilizing
Effect.Adjust the position of plug screw by adjustment, auxiliary valve combustion gas output bias can be changed, to optimize coefficient of excess air.
It should be understood that the present embodiment is only illustrative of the invention and is not intended to limit the scope of the invention.In addition, it is to be understood that
After having read the content of present invention instruction, those skilled in the art can make various changes or modifications to the present invention, these etc.
Valency form equally falls within the application appended claims limited range.
Claims (8)
1. a kind of pressure fully pre-mixing gas combustion burner making combustion gas burning completely, is characterized in that, including combustion head (1), mixes
Depressed structure (2), blower fan (3), combustion gas and AIR Proportional control valve (4)；Blower fan includes air inlet (31) and air outlet (32), described
Gas mixed nub structure is in the tubular of both ends open, and gas mixed nub structure includes interconnective inner tube wall (21) and outer tube wall (22), inner tube wall
It is provided with annular cavity (23) and the annular outer-cavity (473) to blower fan one end open and outer tube wall between；Gas mixed nub structure one end with go out
Air port connects, and the gas mixed nub structure other end is connected with combustion head；The periphery wall of annular cavity is provided with fuel gas inlet (25), annular
The internal perisporium of inner chamber is provided with the first gas outlet (26)；
Described combustion gas and AIR Proportional control valve include valve body (41), the gas inlet chamber (42) in valve body, blast air inlet
Chamber (43) and inner chamber (44)；Blast inlet chamber is connected with the periphery wall of annular outer-cavity by breather (24), and valve body is provided with
Gas inlet passage (45) with gas inlet chamber UNICOM；The connecting portion of gas inlet chamber and inner chamber is provided with valve port rubber cushion
(47), valve port rubber cushion with internal chamber wall and main valve valve rod (48) upper end that is slidably connected with internal chamber wall is connected, main valve valve
Bar lower end is connected with main valve epithelium (49), and main valve epithelium is connected with the closing of internal chamber wall bottom and inner chamber is divided into main valve epithelium
Epicoele (441) and main valve epithelium cavity of resorption (442)；Internal chamber wall is connected with main valve epithelium by main spool spring (443)；Main valve epithelium
Epicoele is provided with the second gas outlet (410) being connected with fuel gas inlet；
Gas inlet passage is connected with main valve epithelium cavity of resorption by being provided with the cavity of resorption inlet channel (411) of main valve flow nipple, main
Valve leather hypostegal cavity is connected with blast inlet chamber by being provided with the cavity of resorption outlet passageway (412) of auxiliary valve flow nipple；Blast air inlet
It is provided with auxiliary valve epithelium (431), auxiliary valve spring (432) in chamber and adjust plug screw (433)；Auxiliary valve epithelium and blast inlet chamber
Closing connects and blast inlet chamber is divided into upper and lower two parts, and blast inlet chamber upper end is provided with opening (434), and opening is provided with
The column (435) of both ends open, is adjusted plug screw and is detachably connected with column inwall, adjusts plug screw and passes through to assist valve spring and auxiliary
Valve leather film top connects；The upper end of cavity of resorption outlet passageway is located on the blast inlet chamber below auxiliary valve epithelium, on main valve epithelium
Chamber is connected with the blast inlet chamber below auxiliary valve epithelium by auxiliary valve gas outlet passage (471).
2. the pressure fully pre-mixing gas combustion burner making combustion gas burning completely according to claim 1, is characterized in that, combustion
It is provided with horizontal baffle (61), horizontal baffle is provided with the groove (62) of downward spheric depression, recessed between gas inlet chamber and inner chamber
Trench bottom is provided with opening；The lower surface of valve port rubber cushion is in the dome shape with fit depressions, and inner chamber is provided with l shape bracing frame
(63), main valve valve rod passes through the vertical core on l shape bracing frame, the position being connected with main valve valve rod of valve port rubber cushion lower surface
It is provided with annular boss (64).
3. the pressure fully pre-mixing gas combustion burner making combustion gas burning completely according to claim 1, is characterized in that, institute
State auxiliary valve flow nipple (461) and include the cylinder of interconnective upper and lower end opening and the annular slab on cylinder, annular slab
The hole at middle part is connected with cylinder；Annular slab is connected with the epithelium pressing plate of auxiliary valve epithelium.
4. the pressure fully pre-mixing gas combustion burner making combustion gas burning completely according to claim 1, is characterized in that, institute
State the first gas outlet to be located on the annular cavity internal perisporium of blower fan, described fuel gas inlet is located at the annular near combustion head
On inner chamber periphery wall；The cross-sectional area of the inner tube wall near blower fan one end is less than the cross-sectional area of the inner tube wall other end.
5. the pressure fully pre-mixing gas combustion burner making combustion gas burning completely according to claim 1, is characterized in that, institute
State blower fan and include spiral case (33), wind wheel (34) and the brshless DC motor with several wind wings in spiral case；Brushless straight
The rotating shaft of stream motor is connected with wind wheel, and the air inlet of described blower fan is located on spiral case.
6. the pressure fully pre-mixing gas combustion burner making combustion gas burning completely according to claim 1, is characterized in that, institute
State combustion head and include the burner body (11) of upper end open, the flow distribution plate (12) in burner body top and located at burner body upper end
The burning web (13) being made up of weaving metallic fibers；Burning web is connected with burner body by hold-down ring (14), under burner body
Portion is connected with the air outlet of blower fan；Described flow distribution plate is flat porous resistance to oxidation corrosion resistant plate.
7. the pressure fully pre-mixing gas combustion burning of the made combustion gas burning completely according to claim 1 or 2 or 3 or 4 or 5 or 6
Device, is characterized in that, fuel gas inlet and the second gas outlet are connected by airway (51), and airway is provided with choke valve
(52).
8. the pressure fully pre-mixing gas combustion burning of the made combustion gas burning completely according to claim 1 or 2 or 3 or 4 or 5 or 6
Device, is characterized in that, main valve flow nipple (451) is located at the air inlet of cavity of resorption inlet channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510065004.2A CN104728842B (en) | 2015-02-06 | 2015-02-06 | Forced full-premixing fuel gas combustion device enabling fuel gas to be completely combusted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510065004.2A CN104728842B (en) | 2015-02-06 | 2015-02-06 | Forced full-premixing fuel gas combustion device enabling fuel gas to be completely combusted |
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| JP6530278B2 (en) * | 2015-08-25 | 2019-06-12 | リンナイ株式会社 | Premixer |
| JP6692543B2 (en) * | 2016-06-16 | 2020-05-13 | 株式会社マルゼン | Gas stove |
| CN108253419A (en) * | 2017-12-22 | 2018-07-06 | 郝名慧 | A kind of pneumatic power amplifier automatic regulating valve and its application |
| CN109442405B (en) * | 2018-12-26 | 2023-12-05 | 广州威茨热能技术有限公司 | Air-fuel ratio example mixer |
| CN110068012B (en) * | 2019-05-14 | 2022-09-30 | 芜湖美的厨卫电器制造有限公司 | Premixing device and water heater |
| CN111072257B (en) * | 2019-12-31 | 2021-11-16 | 秦皇岛玻璃工业研究设计院有限公司 | Burner for horseshoe flame glass kiln, glass kiln and burning method |
| CN112254126B (en) * | 2020-10-23 | 2023-01-03 | 湖北锋焰机电科技有限公司 | Adjustable five-channel gas co-combustion burner for kiln and use method |
| CN112460624A (en) * | 2020-11-20 | 2021-03-09 | 无锡锡州机械有限公司 | Gas leading-in device |
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