CN208817471U - A kind of full premix surface-type burner gas-air mixing machine - Google Patents
A kind of full premix surface-type burner gas-air mixing machine Download PDFInfo
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- CN208817471U CN208817471U CN201821433887.3U CN201821433887U CN208817471U CN 208817471 U CN208817471 U CN 208817471U CN 201821433887 U CN201821433887 U CN 201821433887U CN 208817471 U CN208817471 U CN 208817471U
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Abstract
A kind of full premix surface-type burner gas-air mixing machine, belongs to technical field of combustion equipment, and the utility model is difficult to reach gas-air to solve conventional burners and uniformly blend, and burner is easily tempered, and efficiency of combustion is low, and polluted gas discharges the high problem of content.Fuel-gas spraying cylinder is mounted in premixer, one end of premixer is connected with blending chamber, sealing ring is equipped between premixer and blending chamber, the other end of premixer is located at the downstream of blower, one end of fuel gas conduit is connected with fuel-gas spraying cylinder, the other end is connected with fuel gas source, bluff body by mounting rack be mounted on blending it is intracavitary.The full premix surface-type burner gas-air mixing machine of one kind of the utility model can be such that air adequately mixes with combustion gas, and gas-air finally may be implemented by blending chamber and uniformly mix.
Description
Technical field
The utility model relates to a kind of full premix surface-type burner gas-air mixing machines, belong to combustion apparatus technology neck
Domain.
Background technique
The gas-air mixing structure that existing pre-mixing type combustion apapratus uses is mostly all very simple, it is difficult to it is equal to reach gas-air
The effect of even blending, therefore burner is caused easily to be tempered, efficiency of combustion is low, and polluted gas discharges the consequences such as content height.
Three kinds of mixing structure forms are common technique form below, and typical structure is illustrated, as follows:
1. swirl vane/mixed wind wheel type
The patent No.: EP1462716A1
Mixer includes tubular conduit, for combustion air to be sent into mixing chamber, one of gas-fuel feeder
Divide in mixing chamber internal stretch.Device includes cylindrical first part, first part and closed second part at one end
Merge；And second part is also substantially tubulose.L is essentially formed, first part is fixed to the wall of mixing chamber.Pipe is fixed to
Second part simultaneously radiates arrangement from second part.Gaseous fuel enters device by opening, along the direction of arrow along flowing, along arrow
The direction of head is transferred to, and then enters mixing chamber along shown direction by pipe.
Combustion air is blown by unshowned air blower, and the direction along arrow is flowed along conduit, mixing chamber with from pipe
The combustion gas of road outflow is mixed.Mixture flows to combustion head by the effect of air blower.Pipeline can also directly be replaced by through-hole.
The second swirl-flow devices identical with device are mounted at the second end of mixing chamber.Device makes air before being blended with combustion gas
Form a certain amount of turbulent flow.It is allowed to more fully mixed with gaseous fuel to the air of mixing chamber injection turbulent flow, improves combustion head
In burning.
Disadvantage: there is mixing dead zone, aditus laryngis inner wall gas/air density component is more uneven more being close to.
2. Venturi tube structure
The patent No.: CN103742911A
Required combustion gas and air enter burner by two channels when gas apparatus works, and air first adds through blower
Enter blast pipe after pressure, outside combustion gas distributor chamber, before reaching venturi type injection cavity entrance；Gas inlet pipe penetrates into
The outer wall of air hose is connected with the combustion gas distributor chamber inside blast pipe, and combustion gas enters combustion gas distributor chamber by air inlet pipe, sprays into through nozzle
Injection cavity.Pressure of the air inside blast pipe is positive pressure, and the air that the combustion gas volume sprayed by nozzle inhales positive pressure enters jointly
Distribution after injection cavity, air and combustion gas are sufficiently mixed in ejection cavity body, between mixing barrel and distribution cylinder
Chamber, combustion gas and air mixture further strengthen mixing when passing through dispensing orifice.
Disadvantage: the characteristic size of runner reduces, and flow velocity changes, and air side pressure is uprushed, and gas/air is caused to have
Apparent pressure difference, fuel gas injection is insufficient, causes gas/air uneven in radially mixing.
3. orifice plate/screen net structure
The patent No.: US6834504B2
Rotational flow generator has axially extending, the chamber of at least approximate rotational symmetry, and burning is preferred by entrance slit
Ground is parallel to longitudinal axis flowing.The tangential orientation of the slit shape entrance more or less as these as a result, combustion air pass through
Strong tangential speed component is gone through, causes to interact with towards burner opening or the axial component of outlet, institute is passed through with vortex
State interior chamber.By in the case cover near combustion air inlet slit and/or via the central supply in burner axis
The device of device optionally or complementally carries out the fuel-rich of fuel.With the mixing portion of the combustion air of fuel in burner
Downstream part in arrange reticular structure.The reticular structure is made of at least one silk screen across flow cross section.
Disadvantage: reticular structure, main function are so that mixed gas is reinforced turbulent flow after reticular structure, and then reinforce mixed
It closes, but arrives reticular structure gap very little, it can the raw larger resistance of convection current movable property.
Utility model content
It is above-mentioned to solve the purpose of the utility model is to provide a kind of full premix surface-type burner gas-air mixing machine
Problem.
A kind of full premix surface-type burner gas-air mixing machine include premixer, fuel gas conduit, fuel-gas spraying cylinder, bluff body,
Blend chamber, mounting rack and sealing ring；
Fuel-gas spraying cylinder is mounted in premixer, and one end of premixer is connected with blending chamber, between premixer and blending chamber
Equipped with sealing ring, the other end of premixer is located at the downstream of blower, and one end of fuel gas conduit is connected with fuel-gas spraying cylinder, the other end with
Fuel gas source is connected, bluff body by mounting rack be mounted on blending it is intracavitary.
Preferred: one end of premixer is equipped with the first mounting flange of premixer, sets on the outer ring end face of the first mounting flange
Have multiple third mounting holes, the other end of premixer is equipped with the second mounting flange of premixer, the second mounting flange of premixer it is interior
It is symmetrically arranged with installation locating convex block on side end face, is equidistantly equipped with multiple first in the end face outside of the second mounting flange of premixer
Mounting hole is equidistantly equipped with multiple second mounting holes on the inner ring end face of the second mounting flange of premixer.
Preferred: fuel-gas spraying cylinder is the cylindrical spray canister of both ends open, is equipped with gas chamber, combustion gas in the side wall of fuel-gas spraying cylinder
The inner wall of spray canister is equipped with gas injection hole, and gas injection hole is connected with gas chamber, symmetrical on the end face of fuel-gas spraying cylinder one end
Equipped with installation positioning groove, installation positioning groove is matched with installation locating convex block, and the end face of the fuel-gas spraying cylinder other end is equipped with
The side inner wall of mounting groove, mounting groove is equipped with fuel gas transmission channel, and the outlet in fuel gas transmission channel is connected with gas chamber, and
The axial direction of outlet and fuel-gas spraying cylinder that channel is sent at combustion gas is perpendicular, and the inlet in fuel gas transmission channel is equipped with mounting flange, peace
It fills and is equidistantly equipped with multiple 4th mounting holes on flange, the output end of fuel gas conduit is connected by the 4th mounting hole with mounting flange
Connect, fuel-gas spraying cylinder is additionally provided with multiple bolts hole on the inner wall of premixer the second mounting flange side, one end of connector with
Second mounting hole is fixedly connected, and the other end of connector is fixedly connected with bolt hole.
Preferred: the one end for blending chamber is equipped with blending the first mounting flange of chamber, blends and is equipped with blending chamber on the inner wall of chamber
Second mounting flange, blending the side equidistantly distributed on the annular end face of the second mounting flange of chamber close to outer ring has multiple five
Mounting hole has multiple 6th mounting holes close to the side equidistantly distributed of inner ring, and the 6th mounting hole passes through bolt and the first installation
Hole is connected.
Preferred: mounting rack is cross mounting rack, and the stabilizer blade of mounting rack is equipped with bar shaped mounting groove, the supporting leg of mounting rack
It is equipped with the 7th mounting hole, is equipped with the 8th mounting hole at the center of mounting rack, mounting rack is fixedly mounted on by bar shaped mounting groove
It blends on the second mounting flange of chamber, bluff body is mounted on mounting rack by the 7th mounting hole and the 8th mounting hole.
The utility model has the effect that, due to special fuel-gas spraying cylinder structure, combustion gas is passed through compared with existing product
Fuel gas transmission channel forms annular access and enters gas chamber, is dispersed into fuel-gas spraying cylinder using gas injection hole, with air
Enter blending chamber after mixing, turbulent wake flow or vortex wake can be formed in bluff body tail portion after bluff body, combustion gas, air are in wake flow
In again reinforce blending, blending chamber downstream formed uniformly blending air-flow.
Detailed description of the invention
Fig. 1 is a kind of structural representation of full premix surface-type burner gas-air mixing machine described in the utility model
Figure；
Fig. 2 is the right view of Fig. 1；
Fig. 3 is the structural schematic diagram of fuel-gas spraying cylinder:
Fig. 4 is the cross-sectional view of fuel-gas spraying cylinder；
Fig. 5 is the structural schematic diagram of premixer；
Fig. 6 is the connection schematic diagram of premixer and fuel-gas spraying cylinder；
Fig. 7 is the structural schematic diagram for blending chamber；
Fig. 8 is the structural schematic diagram of mounting rack.
In figure: 1- blower；The premixer 2-；3- fuel gas conduit；4- fuel-gas spraying cylinder；5- bluff body；6- blends chamber, 7- mounting rack；8-
Connector；The first mounting flange of the premixer 21-, the second mounting flange of the premixer 22-, 23- installation locating convex block, 211- third peace
Fill hole, the first mounting hole of 221-, the second mounting hole of 222-, 41- gas injection hole, 42- mounting flange, 43- bolt hole, 44- peace
Fill positioning groove, the 4th mounting hole of 421-, 422- fuel gas transmission channel, 61- blending the first mounting flange of chamber, 62- blending chamber the
Two mounting flanges, the 5th mounting hole of 611-, the 6th mounting hole of 612-, 71- bar shaped mounting groove, the 7th mounting hole of 72-, 73- the 8th
Mounting hole.
Specific embodiment
The utility model preferred embodiment is elaborated below according to attached drawing.
As shown in Figures 1 to 8, a kind of full premix surface-type burner gas-air mixing machine packet described in the utility model
Include premixer 2, fuel gas conduit 3, fuel-gas spraying cylinder 4, bluff body 5, blending chamber 6, mounting rack 7 and sealing ring C1；
Fuel-gas spraying cylinder 4 is mounted in premixer 2, and one end of premixer 2 is connected with blending chamber 6, premixer 2 and blending chamber
Sealing ring C1 is equipped between 6, the other end of premixer 2 is located at the downstream of blower 1, and one end of fuel gas conduit 3 is connected with fuel-gas spraying cylinder 4
Logical, the other end is connected with fuel gas source, and bluff body 5 is mounted in blending chamber 6 by mounting rack 7；Blower 1 is the blending of this gas-air
The upstream equipment of device.
Further, one end of premixer 2 is equipped with the first mounting flange of premixer 21, the outer ring end face of the first mounting flange 21
Multiple third mounting holes 211 are equipped with, the other end of premixer 2 is equipped with the second mounting flange of premixer 22, and premixer second is pacified
It fills and is symmetrically arranged with installation locating convex block 23 on the inner side end of flange 22, in the end face outside of the second mounting flange of premixer 22 etc.
Spacing is equipped with multiple first mounting holes 221, is equidistantly equipped with multiple second on the inner ring end face of the second mounting flange of premixer 22
Mounting hole 222.
Further, fuel-gas spraying cylinder 4 is the cylindrical spray canister of both ends open, gas chamber, combustion are equipped in the side wall of fuel-gas spraying cylinder 4
The inner wall of gas blowout cylinder 4 is equipped with gas injection hole 41, and gas injection hole 41 is connected with gas chamber, the end of 4 one end of fuel-gas spraying cylinder
Installation positioning groove 44 is symmetrically arranged on face, installation positioning groove 44 is matched with installation locating convex block 23, and fuel-gas spraying cylinder 4 is another
The end face at end is equipped with mounting groove, and the side inner wall of mounting groove is equipped with fuel gas transmission channel 422, fuel gas transmission channel 422
Outlet is connected with gas chamber, and send the outlet in channel 422 and the axial direction of fuel-gas spraying cylinder 4 perpendicular at combustion gas, and fuel gas transmission is logical
The inlet in road 422 is equipped with mounting flange 42, is equidistantly equipped with multiple 4th mounting holes 421 on mounting flange 42, fuel gas conduit 3
Output end is connected by the 4th mounting hole 421 with mounting flange 42, and fuel-gas spraying cylinder 4 is close to the second mounting flange of premixer 22 1
Multiple bolts hole 43 are additionally provided on the inner wall of side, one end of connector 8 is fixedly connected with the second mounting hole 222, connector 8 it is another
One end is fixedly connected with bolt hole 43.
Further, one end of blending chamber 6 is equipped with blending the first mounting flange of chamber 61, blends to be equipped on the inner wall of chamber 6 and mix
Mixed the second mounting flange of chamber 62, blending the side equidistantly distributed on the annular end face of the second mounting flange of chamber 62 close to outer ring has
Multiple 5th mounting holes 611, the 5th mounting hole 611 is in required equipment or in operating condition, leaning on the integral installation of this mixing machine
The side equidistantly distributed of nearly inner ring has multiple 6th mounting holes 612, and the 6th mounting hole 612 passes through bolt and the first mounting hole
211 are connected.
Further, mounting rack 7 is cross mounting rack, the stabilizer blade of mounting rack 7 is equipped with bar shaped mounting groove 71, mounting rack 7
Supporting leg be equipped with the 7th mounting hole 72, the 8th mounting hole 73 is equipped at the center of mounting rack 7, mounting rack 7 passes through bar shaped installation
Slot 71 is fixedly mounted on blending the second mounting flange of chamber 62, and bluff body 5 is installed by the 7th mounting hole 72 and the 8th mounting hole 73
On mounting rack 7
Working principle:
Novel all-premixing burner gas-air mixing machine adds the structure type of bluff body using combustion gas watering can.Blower 1 is being mixed
Mixed device upstream is pumped into air 1F, forms 2F access by converging after blower, and air enters 4 inside of combustion gas watering can through 2F access；Combustion
Gas flows into 4 cavity of combustion gas watering can from the outside through by main combustible pipe 3, forms circulation path 4F, is ejected to combustion through gas jet orifice 41
4 inside of gas blowout bucket, mixes with 2F passage air, forms premixed flow and enters to blend chamber formation access 5F, premixes gas through 6F access stream
After crossing bluff body 5, turbulent wake flow or vortex wake are formed in 5 tail portion of bluff body, combustion gas, air reinforce blending, most end form in wake flow
It is flowed out at uniform mixed gas 7F.
This embodiment is just an exemplary description of this patent, does not limit its protection scope, those skilled in the art
Member can also be changed its part, as long as it does not exceed the essence of this patent, within the protection scope of the present patent.
Claims (5)
1. a kind of full premix surface-type burner gas-air mixing machine, it is characterised in that: including premixer (2), fuel gas conduit
(3), fuel-gas spraying cylinder (4), bluff body (5), blending chamber (6), mounting rack (7) and sealing ring (C1)；
The fuel-gas spraying cylinder (4) is mounted in premixer (2), and the one end of premixer (2) is connected with blending chamber (6), premixer
(2) it is equipped with sealing ring (C1) between blending chamber (6), the other end of premixer (2) is located at the downstream of blower (1), fuel gas conduit (3)
One end be connected with fuel-gas spraying cylinder (4), the other end is connected with fuel gas source, and bluff body (5) is mounted on blending by mounting rack (7)
In chamber (6).
2. a kind of full premix surface-type burner gas-air mixing machine according to claim 1, it is characterised in that: described
One end of premixer (2) is equipped with the first mounting flange of premixer (21), and the outer ring end face of the first mounting flange (21) is equipped with more
A third mounting hole (211), the other end of premixer (2) are equipped with the second mounting flange of premixer (22), and premixer second is installed
Installation locating convex block (23), the end face outside of the second mounting flange of premixer (22) are symmetrically arranged on the inner side end of flange (22)
On be equidistantly equipped with multiple first mounting holes (221), be equidistantly equipped on the inner ring end face of the second mounting flange of premixer (22)
Multiple second mounting holes (222).
3. a kind of full premix surface-type burner gas-air mixing machine according to claim 2, it is characterised in that: described
Fuel-gas spraying cylinder (4) is the cylindrical spray canister of both ends open, is equipped with gas chamber in the side wall of fuel-gas spraying cylinder (4), fuel-gas spraying cylinder (4)
Inner wall is equipped with gas injection hole (41), and gas injection hole (41) is connected with gas chamber, on the end face of fuel-gas spraying cylinder (4) one end
It is symmetrically arranged with installation positioning groove (44), installation positioning groove (44) is matched with installation locating convex block (23), fuel-gas spraying cylinder (4)
The end face of the other end is equipped with mounting groove, and the side inner wall of mounting groove is equipped with fuel gas transmission channel (422), fuel gas transmission channel
(422) outlet is connected with gas chamber, and the outlet of fuel gas transmission channel (422) and the axial direction of fuel-gas spraying cylinder (4) are perpendicular,
The inlet in fuel gas transmission channel (422) is equipped with mounting flange (42), and multiple 4th peaces are equidistantly equipped on mounting flange (42)
It fills hole (421), the output end of fuel gas conduit (3) is connected by the 4th mounting hole (421) with mounting flange (42), fuel-gas spraying cylinder
(4) it is additionally provided with multiple bolts hole (43) on the inner wall of the second mounting flange of premixer (22) side, one end of connector (8)
It is fixedly connected with the second mounting hole (222), the other end of connector (8) is fixedly connected with bolt hole (43).
4. a kind of full premix surface-type burner gas-air mixing machine according to claim 3, it is characterised in that: described
The one end for blending chamber (6) is equipped with blending the first mounting flange of chamber (61), and blending chamber second is equipped on the inner wall of blending chamber (6) and is pacified
It fills flange (62), blending the side equidistantly distributed on the annular end face of the second mounting flange of chamber (62) close to outer ring has multiple the
Five mounting holes (611) have multiple 6th mounting holes (612) close to the side equidistantly distributed of inner ring, and the 6th mounting hole (612) is logical
Bolt is crossed to be connected with the first mounting hole (221).
5. a kind of full premix surface-type burner gas-air mixing machine according to claim 4, it is characterised in that: described
Mounting rack (7) is cross mounting rack, and the stabilizer blade of mounting rack (7) is equipped with bar shaped mounting groove (71), on the supporting leg of mounting rack (7)
Equipped with the 7th mounting hole (72), the 8th mounting hole (73) is equipped at the center of mounting rack (7), mounting rack (7) is installed by bar shaped
Slot (71) is fixedly mounted in blending the second mounting flange of chamber (62), and bluff body (5) passes through the 7th mounting hole (72) and the 8th installation
Hole (73) is mounted on mounting rack (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821433887.3U CN208817471U (en) | 2018-09-03 | 2018-09-03 | A kind of full premix surface-type burner gas-air mixing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821433887.3U CN208817471U (en) | 2018-09-03 | 2018-09-03 | A kind of full premix surface-type burner gas-air mixing machine |
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| CN208817471U true CN208817471U (en) | 2019-05-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844067A (en) * | 2018-09-03 | 2018-11-20 | 哈尔滨电气股份有限公司 | A kind of full premix surface-type burner gas-air mixing machine |
-
2018
- 2018-09-03 CN CN201821433887.3U patent/CN208817471U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844067A (en) * | 2018-09-03 | 2018-11-20 | 哈尔滨电气股份有限公司 | A kind of full premix surface-type burner gas-air mixing machine |
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