CN207132341U - Gas mixing device and full premix combustion system - Google Patents
Gas mixing device and full premix combustion system Download PDFInfo
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- CN207132341U CN207132341U CN201720896284.6U CN201720896284U CN207132341U CN 207132341 U CN207132341 U CN 207132341U CN 201720896284 U CN201720896284 U CN 201720896284U CN 207132341 U CN207132341 U CN 207132341U
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Abstract
The utility model provides a kind of gas mixing device, including gas connection pipe, enter gas chamber, enter air chamber and air mixture chamber, it is described enter gas chamber connected with the gas connection pipe, it is described enter air chamber and the air mixture chamber be placed in jointly it is described enter gas chamber in, it is described enter air chamber connected with the air mixture chamber；It is described enter the air chamber end adjacent with the air mixture chamber between form described in enter the gas outlet of gas chamber；It is described enter air chamber backwards to one end end of the air mixture chamber with it is described enter gas chamber be tightly connected；The air mixture chamber backwards to it is described enter air chamber one end end and outer circumferential side with it is described enter gas chamber be tightly connected, the air mixture chamber backwards to it is described enter air chamber one end exported as the air mixture of the gas mixing device.Using technical solutions of the utility model, the mixability of combustion gas and air can be effectively improved, reduces burning pollutant discharge and simple in construction.Second technical problem that the utility model solves is to provide for a kind of full premix combustion system, can effectively improve the mixability of combustion gas and air, reduces burning pollutant discharge and simple in construction.
Description
Technical field
Technical field of burner is the utility model is related to, especially a kind of gas mixing device and full premix combustion system.
Background technology
In the prior art, combustion system uses full premix combustion technology more, and full premix combustion refers to that combustion gas is fired in burner
First it is sufficiently mixed before burning with air, no longer needs to provide air during burning.Full premix combustion has burning strong
The advantages that degree is big, flame is short, combustion noise is small, therefore more in combustion system combustion gas and air are carried out using full pre-mixing apparatus
Mixing, to improve efficiency of combustion；In addition, full premix combustion is passed through in combustion gas, burning pollutant discharge capacity reduces, and is a kind of Efficient Ring
The combustion system of guarantor.
Current full pre-mixing apparatus structure is rather complicated, by rapid air movement to drive combustion gas mixing, Some gases
With air undercompounding, the pollutants such as CO and NOx are easily produced, and efficiency of combustion is not high.
Utility model content
First technical problem that the utility model solves is to provide for a kind of gas mixing device, can effectively improve combustion gas
With the mixability of air, reduce burning pollutant discharge and it is simple in construction.
Second technical problem that the utility model solves is to provide for a kind of full premix combustion system, can effectively carry
High combustion gas and the mixability of air, reduce burning pollutant discharge and it is simple in construction.
Above-mentioned first technical problem is solved by the following technical programs：
A kind of gas mixing device, including gas connection pipe, enter gas chamber, enter air chamber and air mixture chamber, it is described enter combustion gas
Chamber connects with the gas connection pipe, it is described enter air chamber and the air mixture chamber be placed in jointly it is described enter gas chamber in,
It is described enter air chamber connected with the air mixture chamber；It is described enter the air chamber end adjacent with the air mixture chamber between structure
Into it is described enter gas chamber gas outlet；It is described enter air chamber backwards to one end end of the air mixture chamber with it is described enter combustion gas
Chamber be tightly connected, it is described enter air chamber backwards to air intake of the one end of the air mixture chamber as the gas mixing device；Institute
State air mixture chamber backwards to it is described enter air chamber one end end and outer circumferential side with it is described enter gas chamber be tightly connected, the mixing
One end that gas chamber enters air chamber described in exports as the air mixture of the gas mixing device.
Gas mixing device described in the utility model, beneficial effect caused by compared with background technology：
By it is described enter air chamber and the air mixture chamber be placed in jointly it is described enter gas chamber in, it is described enter air chamber
Enter the gas outlet of gas chamber described in being formed between the end adjacent with the air mixture chamber, enter when the air intake
Air toward the air mixture cavity direction flow when, the gas outlet forms negative pressure, so that the gas outlet is to described
Enter combustion gas in gas chamber and produce certain suction so that it is described enter gas chamber in combustion gas can pass through the gas outlet
Mix with air and flowed toward the air mixture intracavitary, and then combustion gas is mixed with air from the air mixture intracavitary
And diffusion, the mixability of combustion gas and air can be effectively improved, reduces burning pollutant discharge and simple in construction.
In one of the embodiments, the air mixture chamber includes back taper necking section and taper diffuser, it is described fall
Taper necking section and taper diffuser are integrally formed and form the contraction mouth between the back taper necking section and taper diffuser,
The area of wherein described contraction mouth is less than the area of the gas outlet, and the area of the gas outlet is less than the air mixture
The area of outlet, so that the air mixture cavity wall forms venturi tube structure, by changing mixed gas in the mixing
The change of gas chamber inner volume and change the speed of mixed gas, and then realize that combustion gas and air enter in the back taper necking section
Row is pre-mixed, is diffused mixing in the taper diffuser, in favor of improving the mixability of combustion gas and air, reduces burning
Pollutant emission and simple in construction.
In one of the embodiments, the area of the gas outlet is less than the area of the air intake so that described
Enter air chamber and the air mixture chamber collectively forms venturi tube structure, so as to the air body by entering air chamber described in compression
Product with speed it is described enter air chamber enter the air velocity of the air mixture chamber, and then increase the negative pressure of the gas outlet,
And then further improve the mixability of combustion gas and air.
In one of the embodiments, the gas outlet in a ring so that it is described enter gas chamber combustion gas pass through the combustion
Gas outlet in a ring spurting enter the air mixture chamber, in favor of increase fuel gas injection area, and then improve combustion gas with
The mixability of air.
In one of the embodiments, the gas mixing device is provided with air pressure feedback mouth and gaseous-pressure feedback port,
The air pressure feedback mouth with it is described enter air chamber connect, the gaseous-pressure feedback port connects with the gas connection pipe,
With the air for enabling outer combustion gas adjusting means to be fed back by the air pressure feedback mouth, the gaseous-pressure feedback port
Pressure signal, gaseous-pressure Signal Regulation combustion gas output quantity.
Above-mentioned second technical problem is solved by the following technical programs：
A kind of full premix combustion system, including above-mentioned gas mixing device, in addition to gas control valve, blower fan and burner；
The air mixture outlet of the air inlet of the blower fan and the gas mixing device, the air outlet of the blower fan by connecting tube with
The air inlet connection of the burner, the gas mixing device are connected by gas connection pipe with the gas control valve.
Full premix combustion system described in the utility model, beneficial effect caused by compared with background technology：
By it is described enter air chamber and the air mixture chamber be placed in jointly it is described enter gas chamber in, it is described enter air chamber
Enter the gas outlet of gas chamber described in being formed between the end adjacent with the air mixture chamber, enter when the air intake
Air toward the air mixture cavity direction flow when, the gas outlet forms negative pressure, so that the gas outlet is to described
Enter combustion gas in gas chamber and produce certain suction so that it is described enter gas chamber in combustion gas can pass through the gas outlet
Mix with air and flowed toward the air mixture intracavitary, and then combustion gas is mixed with air from the air mixture intracavitary
And diffusion, the mixability of combustion gas and air can be effectively improved, reduces burning pollutant discharge and simple in construction.In addition, institute
State blower fan and provide negative pressure for the gas mixing device, entered with bypassing air through the air intake in the gas mixing device, it is described
The change of blower fan wind speed produces different negative pressure to the gas mixing device, to adjust the air inlet of the gas mixing device；And institute
State gas control valve energy regulating gas output quantity；In such manner, it is possible to it is the mixed gas by the blower fan and the gas control valve
Device adjusts air input and combustion gas input quantity, can effectively improve the mixability of combustion gas and air, and then improve combustion gas
Efficiency of combustion and reduce pollutant emission.
In one of the embodiments, the air pressure feedback mouth is connected by airway tube with the gas control valve,
The gaseous-pressure feedback port is connected by feedback channel with the gas control valve, to enable the gas control valve to lead to
Cross the air pressure feedback mouth, the air pressure signal of gaseous-pressure feedback port feedback, the combustion of gaseous-pressure Signal Regulation
Gas output quantity, and then air and the ratio of combustion gas in the gas mixing device are adjusted, improve the mixability of combustion gas and air.
In one of the embodiments, the burner includes cylindrical base member and metal web, the metal web
It is covered in the outer surface of the cylindrical base member；One end closing of the cylindrical base member, the other end conduct of the cylindrical base member
Air inlet, the outer surface of the cylindrical base member are provided with multiple burner ports, and multiple burner ports are uniformly distributed in the cylinder
The outer surface of matrix, the outer of the cylindrical base member is covered in by the cylindrical structure and the metal web of the burner
Side surface can effectively expand burning area and improve efficiency of combustion, and can efficiently reduce pollution as burning surface
The discharge of thing.
In one of the embodiments, the inner chamber of the cylindrical base member is axially arranged with least one piece combustion along the cylindrical base member
Qi leel matching board, at least one piece of combustion gas distribution plate are used for the combustion for dividing equally the inner chamber for entering the cylindrical base member from the air inlet
Gas, it is uniform to ensure to be assigned to the air mixture amount of the burner port of the appearance side of cylindrical base member, avoid the cylinder base
The internal gas pressure inequality of body causes the localized hyperthermia of the cylindrical base member outer surface, and then improves the combustion of the burner
Burn uniformity.
In one of the embodiments, the cylindrical base member is provided with capping, and the cylinder base is closed by the capping
One end of body, so that combustion gas can be sprayed by the burner port on the cylindrical base member outer surface.
Brief description of the drawings
Fig. 1 is the sectional view of the gas mixing device in the utility model embodiment；
Fig. 2 is the sectional view of another angle of the gas mixing device in the utility model embodiment；
Fig. 3 is the top view of the gas mixing device in the utility model embodiment；
Fig. 4 is the structural representation of the full premix combustion system in the utility model embodiment；
Fig. 5 is the air of the gas mixing device in the utility model embodiment, the sectional view of combustion gas feedback regulation；
Fig. 6 is the structural representation of the burner in the utility model embodiment；
Wherein, 1, gas mixing device；2nd, gas control valve；3rd, blower fan；4th, burner；5th, connecting tube；12nd, gas connection pipe；
13rd, gas chamber is entered；14th, air chamber is entered；15th, air mixture chamber；16th, gas outlet；17th, air pressure feedback mouth；18th, gas pressure
Force feedback mouth；141st, air intake；151st, back taper necking section；152nd, taper diffuser；153rd, contraction mouth；154th, air mixture
Outlet；171st, airway tube；41st, cylindrical base member；42nd, metal web；43rd, burner port；44th, combustion gas distribution plate.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
In description of the present utility model, unless otherwise defined, all of technologies and scientific terms used here by the article with
It is identical to belong to the implication that those skilled in the art of the present utility model are generally understood that.Herein in explanation of the present utility model
Term used in book is intended merely to describe the purpose of specific embodiment, it is not intended that in limitation the utility model.Herein
Used term "and/or" includes the arbitrary and all combination of one or more related Listed Items.In addition, term
The orientation or position relationship of the instruction such as "left", "right", " on ", " under ", " interior " be based on orientation shown in the drawings or position relationship,
It is for only for ease of description the utility model and simplifies and describe, rather than indicates or imply that signified device or element must have
Specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term
" installation ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly be connected
Connect；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can
To be the connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the utility model.In addition, skill involved in the utility model different embodiments disclosed below
As long as art feature does not form conflict each other, can be combined with each other.
Referring to Fig. 1, the utility model embodiment provides a kind of gas mixing device 1, including gas connection pipe 12, enters gas chamber
13rd, enter air chamber 14 and air mixture chamber 15, it is described enter gas chamber 13 connected with the gas connection pipe 12, it is described enter air
Chamber 14 and the air mixture chamber 15 be placed in jointly it is described enter gas chamber 13 in, it is described enter air chamber 14 and the air mixture
Chamber 15 connects；It is described enter formed between air chamber 14 and the adjacent end of the air mixture chamber 15 described in enter the combustion of gas chamber 13
Gas outlet 16；It is described enter air chamber 14 backwards to the air mixture chamber 15 one end end with it is described enter gas chamber 13 sealing connect
Connect, it is described enter air chamber 14 backwards to the air mixture chamber 15 air intake 141 of the one end as the gas mixing device 1；Institute
State air mixture chamber 15 backwards to it is described enter air chamber 14 one end end and outer circumferential side with it is described enter gas chamber 13 be tightly connected, institute
State air mixture outlet 154 of the one end as the gas mixing device 1 that air mixture chamber 15 enters air chamber 14 described in.
In the utility model embodiment, by it is described enter air chamber 14 and the air mixture chamber 15 be placed in institute jointly
State into gas chamber 13, it is described enter formed between air chamber 14 and the adjacent end of the air mixture chamber 15 described in enter gas chamber
13 gas outlet 16, when the air that the air intake 141 enters flows toward the direction of air mixture chamber 15, the combustion
Form negative pressure at gas outlet 16 so that the gas outlet 16 to it is described enter gas chamber 13 in combustion gas produce certain suction,
So that it is described enter gas chamber 13 in combustion gas can be mixed by the gas outlet 16 with air and toward the air mixture
Flowed in chamber 15, and then combustion gas is being able to mix and spread with air out of described air mixture chamber 15, can effectively improve combustion
The mixability of gas and air, reduce burning pollutant discharge and it is simple in construction.
Referring to Fig. 1~2, in one of the embodiments, the air mixture chamber 15 includes the He of back taper necking section 151
Taper diffuser 152, the back taper necking section 151 are integrally formed with taper diffuser 152 and form the back taper necking
Contraction mouth 153 between section 151 and taper diffuser 152, wherein the area of the contraction mouth 153 is less than the gas outlet
16 area, the area of the gas outlet 16 is less than the area of air mixture outlet 154, so that the air mixture chamber
15 inwalls form venturi tube structure, mixed to change in the change of the inner volume of air mixture chamber 15 by changing mixed gas
The speed of gas is closed, and then realizes that combustion gas and air are pre-mixed, in taper diffusion in the back taper necking section 151
Section 152 is diffused mixing, in favor of improving the mixability of combustion gas and air, reduces burning pollutant discharge and structure letter
It is single.
It should be noted that by bernoulli principle, in the back taper necking section 151, the gas outlet 16 is more than institute
The area of contraction mouth 153 is stated, combustion gas is interior because pressure becomes big in the back taper necking section 151 with air, and flow velocity diminishes, combustion gas
Tentatively mixed in the back taper necking section 151 with air；In the taper diffuser 152, the contraction mouth 153 is less than institute
The area of air mixture outlet 154 is stated, combustion gas is interior because pressure diminishes in the back taper necking section 151 with air, and flow velocity becomes
Greatly, combustion gas is further mixed with air in the taper diffuser 152, and thus combustion gas mixes combustion with air by described
It has been sufficiently mixed during gas outlet 154.
Referring to Fig. 1~2, in one of the embodiments, the area of the gas outlet 16 is less than the air intake 141
Area so that it is described enter air chamber 14 and the air mixture chamber 15 collectively form venturi tube structure, so as to pass through compression
It is described enter air chamber 14 volume of air with speed it is described enter air chamber 14 enter the air velocity of the air mixture chamber 15, enter
And increase the negative pressure of the gas outlet 16, and then further improve the mixability of combustion gas and air.
Referring to Fig. 1~2, in one of the embodiments, the gas outlet 16 in a ring so that it is described enter gas chamber 13
Combustion gas by the gas outlet 16, spurting enters the air mixture chamber 15 in a ring, in favor of increase fuel gas injection
Area, and then improve the mixability of combustion gas and air.
Referring to Fig. 2~3, in one of the embodiments, the gas mixing device 1 is provided with the He of air pressure feedback mouth 17
Gaseous-pressure feedback port 18, the air pressure feedback mouth 17 with it is described enter air chamber 14 connect, the gaseous-pressure feedback port
18 connect with the gas connection pipe 12, with enable outer combustion gas adjusting means by the air pressure feedback mouth 17,
The air pressure signal of the feedback of gaseous-pressure feedback port 18, gaseous-pressure Signal Regulation combustion gas output quantity.
The outer combustion gas adjusting means can obtain the gas mixing device 1 by the air pressure feedback mouth 17
Air negative pressure, and then the combustion gas input quantity of the outer combustion gas adjusting means is adjusted, make it that combustion gas input quantity is defeated with air
Enter the change of amount and adjust accordingly；And the outer combustion gas adjusting means is obtained by the gaseous-pressure feedback port 18 and fired
Gas negative pressure, and then the combustion gas input quantity of the outer combustion gas adjusting means is further adjusted, to cause combustion gas input quantity and air
Input quantity maintains the constant of air-fuel ratio.
Referring to Fig. 4, the utility model embodiment also provides a kind of full premix combustion system, including above-mentioned gas mixing device 1,
Also include gas control valve 2, blower fan 3 and burner 4；The air mixture of the air inlet of the blower fan 3 and the gas mixing device 1 goes out
Mouth 154 is connected, and the air outlet of the blower fan 3 is connected by connecting tube 5 with the air inlet of the burner 4, the gas mixing device 1
It is connected by gas connection pipe 12 with the gas control valve 2.
In the utility model embodiment, by it is described enter air chamber 14 and the air mixture chamber 15 be placed in institute jointly
State into gas chamber 13, it is described enter formed between air chamber 14 and the adjacent end of the air mixture chamber 15 described in enter gas chamber
13 gas outlet 16, when the air that the air intake 141 enters flows toward the direction of air mixture chamber 15, the combustion
Form negative pressure at gas outlet 16 so that the gas outlet 16 to it is described enter gas chamber 13 in combustion gas produce certain suction,
So that it is described enter gas chamber 13 in combustion gas can be mixed by the gas outlet 16 with air and toward the air mixture
Flowed in chamber 15, and then combustion gas is being able to mix and spread with air out of described air mixture chamber 15, can effectively improve combustion
The mixability of gas and air, reduce burning pollutant discharge and it is simple in construction.In addition, the blower fan 3 is the gas mixing device
1 provides negative pressure, is entered with bypassing air through the air intake 141 in the gas mixing device 1, the wind speed of blower fan 3 change pair
The gas mixing device 1 produces different negative pressure, to adjust the air inlet of the gas mixing device 1；And the gas control valve 2
Can regulating gas output quantity；In such manner, it is possible to it is that the gas mixing device 1 adjusts sky by the blower fan 3 and the gas control valve 2
Gas input quantity and combustion gas input quantity, the mixability of combustion gas and air can be effectively improved, and then improve the efficiency of combustion of combustion gas
With reduction pollutant emission.
Referring to Fig. 5, in one of the embodiments, the air pressure feedback mouth 17 passes through airway tube 171 and the combustion
Gas regulating valve 2 is connected, and the gaseous-pressure feedback port 18 is connected by feedback channel with the gas control valve 2, to cause
State the air pressure that gas control valve 2 can be fed back by the air pressure feedback mouth 17, the gaseous-pressure feedback port 18
Signal, gaseous-pressure Signal Regulation combustion gas output quantity, and then air and the ratio of combustion gas in the gas mixing device 1 are adjusted, improve
Combustion gas and the mixability of air.
In the present embodiment, when the wind speed of the blower fan 3 becomes big and then improves air negative pressure, air pressure variations signal
The gas valve zero point is fed back to by the airway tube, the feedback information received is delivered to described by the gas valve zero point
On the main valve epithelium of gas control valve 2, become greatly by the aperture of the main valve epithelium accordingly to increase into described mixed
Combustion gas input quantity in device of air 1；Identical, when the wind speed of the blower fan 3 diminishes and then reduces air negative pressure, air pressure
Variable signal feeds back to the gas valve zero point by the airway tube, and the gas valve zero point passes the feedback information received
Be delivered on the main valve epithelium of the gas control valve 2, the main valve epithelium can regulating gas input quantity, pass through the master
The aperture of valve epithelium diminishes accordingly to reduce the combustion gas input quantity into the gas mixing device 1, passes through gas control valve 2
Feedback regulation, combustion gas input quantity changes with the change of air input, to avoid air input excessive, takes away described
Heat caused by burner 41.
Referring to Fig. 6, in one of the embodiments, the burner 4 includes cylindrical base member 41 and metal web 42, institute
State the outer surface that metal web 42 is covered in the cylindrical base member 41；One end closing of the cylindrical base member 41, the circle
For the other end of cylinder matrix 41 as air inlet, the outer surface of the cylindrical base member 41 is provided with multiple burner ports 43, multiple described
Burner port 43 is uniformly distributed in the outer surface of the cylindrical base member 41, fine by the cylindrical structure of burner 4 and the metal
The outer surface that dimension net 42 is covered in the cylindrical base member 41 can effectively expand burning area and raising as burning surface
Efficiency of combustion, and the discharge of pollutant can be efficiently reduced.
Specifically, in the present embodiment, the cylindrical base member 41 uses resistant to elevated temperatures stainless steel material, the metallic fiber
Net 42 is made of resistant to elevated temperatures ferrochrome weaving metallic fibers, described by the way that the metal web 42 is fixedly welded on
The outer surface of cylindrical base member 41, when being passed through combustion gas after being sufficiently mixed and the cylindrical base member 41 in the cylindrical base member 41
On multiple burner ports 43 be ignited after, combustion gas from multiple burner ports 43 eject after completely burned immediately, and
Flame is burnt in the form of micro- flame or nonflame, while the metal web 42 is heated by the flame incandescent state, in such manner, it is possible to
Combustion gas utilization rate is improved, and then reduces the discharge of the pollutants such as NOx, and then improves the efficiency of combustion of the burner 4.
It should be noted that the end of the air inlet of the burner 4 is provided with air inlet flange, the connecting tube 5
Preferably bridge piece, one end that the bridge piece is connected with the air outlet of the blower fan 3 are provided with square flange, the connection
One end that bend pipe is connected with the air inlet of the burner 4 is provided with circular flange, and the burner 4 is fixed by air inlet flange
Connect on the circular flange, and ignition electrode is installed on the circular flange, the ignition electrode and the close air inlet
The burner port 43 is oppositely arranged to light the burner 4, the bridge piece be connected with the air outlet of the blower fan 3 one
The area at end is more than the area of one end that the bridge piece is connected with the air inlet of the burner 4, can by bernoulli principle
Know, gas when air mixture is entered in the burner 4 by the compression of the air outlet of blower fan 3 through the bridge piece
Rate of flow of fluid becomes big, to improve the air mixture flow velocity entered in the burner 4.
In the present embodiment, the blower fan 3 is specially DC frequency-changing blower fan, and DC frequency-changing blower fan can realize frequency control
And be easily manipulated, and then beneficial to the thermal power of all-premixing burner 4 described in variable frequency adjustment, to meet different demands.When described complete
The heat demand of premix combustion systems changes, and the DC frequency-changing blower fan receives wind speed regulating command and changes wind speed, described
Air negative pressure in gas mixing device 1 changes, and while air negative pressure changes, gas negative pressure also changes in succession, by described
The adjustment effect of gas control valve 2 so that the combustion gas in the gas mixing device 1 continues to identical air-fuel ratio with air, real
The completely burned and low pollution emission of the existing combustion system, and improve the performance of the full premix combustion system.
Referring to Fig. 6, in one of the embodiments, the inner chamber of the cylindrical base member 41 is axial along the cylindrical base member 41
Provided with least one piece of combustion gas distribution plate 44, at least one piece of combustion gas distribution plate 44 is used to divide equally from described in air inlet entrance
The combustion gas of the inner chamber of cylindrical base member 41, fired with ensureing to be assigned to the mixing of the burner port 43 of the appearance side of cylindrical base member 41
Tolerance is uniform, avoids the internal gas pressure inequality of the cylindrical base member 41 from causing the part of the outer surface of cylindrical base member 41
High temperature, and then improve the combustion uniformity of the burner 4.
It should be noted that in the present embodiment, the inner chamber of the cylindrical base member 41 is provided with four pieces of combustion gas distribution plates
44, four pieces of combustion gas distribution plates 44 by the inner chamber isometric(al) of the cylindrical base member 41 one point be four, so as to avoid the combustion
Burner 4 causes the combustion gas in the cylindrical base member 41 to distribute uneven phenomenon, Jin Erbao due to reasons such as air pressure in combustion
The gas output that card is assigned to each burner port 43 on the outer surface of cylindrical base member 41 is identical, and then further improves
The combustion uniformity of the burner 4.
Referring to Fig. 5 and Fig. 6, in one of the embodiments, the cylindrical base member 41 is provided with capping, by the capping
One end of the cylindrical base member 41 is closed, so that combustion gas can pass through the burner port on the outer surface of cylindrical base member 41
43 spray.
Described above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of the utility model principle is not departed from, some improvement and deformation can also be made, these improve and become
Shape is also considered as the scope of protection of the utility model.
Claims (10)
- A kind of 1. gas mixing device, it is characterised in that including gas connection pipe (12), enter gas chamber (13), enter air chamber (14) and Air mixture chamber (15), it is described enter gas chamber (13) connected with the gas connection pipe (12), it is described enter air chamber (14) and institute State air mixture chamber (15) be placed in jointly it is described enter gas chamber (13) in, it is described enter air chamber (14) and the air mixture chamber (15) connect；It is described enter formed between air chamber (14) and the adjacent end of the air mixture chamber (15) described in enter gas chamber (13) Gas outlet (16)；It is described enter air chamber (14) backwards to the air mixture chamber (15) one end end with it is described enter gas chamber (13) sealing connect Connect, it is described enter air chamber (14) backwards to the air mixture chamber (15) air intake of the one end as the gas mixing device (1) (141)；The air mixture chamber (15) backwards to it is described enter air chamber (14) one end end and outer circumferential side with it is described enter gas chamber (13) it is tightly connected, the air mixture chamber (15) enters one end of air chamber (14) as the gas mixing device (1) described in Air mixture outlet (154).
- 2. gas mixing device as claimed in claim 1, it is characterised in that the air mixture chamber (15) includes back taper necking section (151) it is integrally formed with taper diffuser (152) with taper diffuser (152), the back taper necking section (151) and forms institute The contraction mouth (153) between back taper necking section (151) and taper diffuser (152) is stated, wherein the face of the contraction mouth (153) Product is less than the area of the gas outlet (16), and the area of the gas outlet (16) is less than air mixture outlet (154) Area.
- 3. gas mixing device as claimed in claim 2, it is characterised in that the area of the gas outlet (16) is less than the air The area of entrance (141).
- 4. the gas mixing device as described in any one of claims 1 to 3, it is characterised in that the gas outlet (16) in a ring with Make it is described enter gas chamber (13) combustion gas by the gas outlet (16), spurting enters the air mixture chamber in a ring (15)。
- 5. gas mixing device as claimed in claim 1, it is characterised in that the gas mixing device (1) is provided with air pressure feedback Mouthful (17) and gaseous-pressure feedback port (18), the air pressure feedback mouth (17) with it is described enter air chamber (14) connect, it is described Gaseous-pressure feedback port (18) connects with the gas connection pipe (12).
- 6. a kind of full premix combustion system, it is characterised in that including the gas mixing device as described in any one of Claims 1 to 5 , in addition to gas control valve (2), blower fan (3) and burner (4) (1)；The air inlet of the blower fan (3) connects with the air mixture outlet (154) of the gas mixing device (1), the blower fan (3) Air outlet is connected by connecting tube (5) with the air inlet of the burner (4), and the gas mixing device (1) passes through gas connection pipe (12) it is connected with the gas control valve (2).
- 7. full premix combustion system as claimed in claim 6, it is characterised in that the air pressure feedback mouth (17) is by leading Tracheae (171) is connected with the gas control valve (2), and the gaseous-pressure feedback port (18) passes through feedback channel and the combustion gas Regulating valve (2) connects.
- 8. full premix combustion system as claimed in claim 6, it is characterised in that the burner (4) includes cylindrical base member (41) and metal web (42), the metal web (42) are covered in the outer surface of the cylindrical base member (41)；It is described One end closing of cylindrical base member (41), the other end of the cylindrical base member (41) is as air inlet, the outside of the cylindrical base member Surface is provided with multiple burner ports (43), and multiple burner ports (43) are uniformly distributed in the outside table of the cylindrical base member (41) Face.
- 9. full premix combustion system as claimed in claim 8, it is characterised in that the inner chamber of the cylindrical base member (41) is along described Cylindrical base member (41) is axially arranged with least one piece of combustion gas distribution plate (44), and at least one piece of combustion gas distribution plate (44) is used to divide equally Enter the combustion gas of the inner chamber of the cylindrical base member (41) from the air inlet.
- 10. full premix combustion system as claimed in claim 8, it is characterised in that the cylindrical base member (41) is provided with capping, One end of the cylindrical base member (41) is closed by the capping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720896284.6U CN207132341U (en) | 2017-07-20 | 2017-07-20 | Gas mixing device and full premix combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720896284.6U CN207132341U (en) | 2017-07-20 | 2017-07-20 | Gas mixing device and full premix combustion system |
Publications (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108895452A (en) * | 2018-07-31 | 2018-11-27 | 浙江滨特热能科技股份有限公司 | A kind of high efficiency burnt gas air mixer |
| CN110360564A (en) * | 2018-04-09 | 2019-10-22 | 苏州威博特能源环保科技有限公司 | A kind of jet pipe |
| CN110762531A (en) * | 2018-07-25 | 2020-02-07 | 德州威诺冷暖设备有限公司 | Gas air mixer |
-
2017
- 2017-07-20 CN CN201720896284.6U patent/CN207132341U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360564A (en) * | 2018-04-09 | 2019-10-22 | 苏州威博特能源环保科技有限公司 | A kind of jet pipe |
| CN110762531A (en) * | 2018-07-25 | 2020-02-07 | 德州威诺冷暖设备有限公司 | Gas air mixer |
| CN108895452A (en) * | 2018-07-31 | 2018-11-27 | 浙江滨特热能科技股份有限公司 | A kind of high efficiency burnt gas air mixer |
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