CN108518678A - A kind of three ring fire high-power burner of upper air inlet of adjustable primary air - Google Patents
A kind of three ring fire high-power burner of upper air inlet of adjustable primary air Download PDFInfo
- Publication number
- CN108518678A CN108518678A CN201810574027.XA CN201810574027A CN108518678A CN 108518678 A CN108518678 A CN 108518678A CN 201810574027 A CN201810574027 A CN 201810574027A CN 108518678 A CN108518678 A CN 108518678A
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- China
- Prior art keywords
- air
- outer shroud
- inner ring
- chamber
- pipe
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Classifications
-
- 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
-
- 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
-
- 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
- F23D14/48—Nozzles
- F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
Abstract
A kind of three ring fire high-power burner of upper air inlet of adjustable primary air, including burner, distributor seat, central flame cap, interior ring fire cover and external ring fire cover, the burner includes air fuel gas premix chamber, center escape pipe, central intake pipe, inner ring mixing chamber, inner ring outlet interface, outer shroud mixing chamber and outer shroud outlet interface, air inlet duct is provided on the escape pipe of center, air air slot is communicated with air inlet duct next time；The last air air slot of under shed is provided on the lower surface of the disk body of the distributor seat, the last air air slot of under shed intersects with air feeding in center interface；The rear portion of air fuel gas premix chamber is provided with stabilier；Last air air slot and next time air guide groove constitute center primary air flow-guiding channel.The primary air abundance that ring fire and outer ring fire are set in guarantee of partition board；The setting of center primary air flow-guiding channel ensures that the primary air of central flame is sufficient, had not only reduced carbon monoxide but also had improved efficiency.
Description
Technical field
The present invention relates to a kind of cooker burners.
Background technology
Currently available technology, the Chinese invention patent ZL201610866695.0 applyings date：On 09 29th, 2016, invention name
Claim：A kind of three ring fire high-power burner of upper air inlet；Including burner, distributor seat, central flame cap, interior ring fire cover and outer ring fire
Lid, distributor seat include disk body, are communicated with central flame cage positioned at the central flame cage of disk body center upper surface, positioned at lower surface
Air feeding in center interface, the interior axial secondary-air passage around central flame cage, inner ring fuel tank, inner ring intake interface, outer
Ring fuel tank, outer shroud intake interface and the outer axial secondary-air passage between inner and outer rings fuel tank；It is central flame cap, interior
Ring fire cover and external ring fire cover coordinate with central flame cage, inner ring fuel tank and outer shroud fuel tank respectively：The burner includes being located at
The air fuel gas premix chamber of the upper opening of front, centrally located center escape pipe go out positioned at the inner ring mixing chamber on right side, inner ring
Gas interface, the outer shroud mixing chamber positioned at left side and outer shroud outlet interface, center escape pipe, inner ring mixing chamber and outer shroud mixing chamber point
It is not communicated with air fuel gas premix chamber by central intake pipe, interior ejector pipe and outer ejector pipe, center escape pipe, inner ring outlet connect
Mouthful and outer shroud outlet interface respectively with air feeding in center interface, inner ring intake interface and outer shroud intake interface grafting, and support respectively
Air feeding in center interface, inner ring intake interface and outer shroud intake interface；The upper end of stabilier supports disk body.There are problems：It cannot adjust
The ratio for saving primary air is unable to reach the combustion state of understanding in face of complicated and diversified gas in the market.
Invention content
The purpose of the present invention is：A kind of three ring fire high-power burner of upper air inlet of adjustable primary air is provided, it has
Once air is sufficient, and burning is abundant, the high feature of efficiency.
The invention is realized in this way：A kind of three ring fire high-power burner of upper air inlet of adjustable primary air, including
Burner, distributor seat, central flame cap, interior ring fire cover and external ring fire cover, distributor seat include disk body, are located at disk body center upper surface
Central flame cage, communicated with central flame cage positioned at lower surface air feeding in center interface, around the interior axial direction of central flame cage
Secondary-air passage, inner ring fuel tank, inner ring intake interface, outer shroud fuel tank, outer shroud intake interface and be located at inner and outer rings combustion gas
Outer axial secondary-air passage between slot；Central flame cap, interior ring fire cover and external ring fire cover are fired with central flame cage, inner ring respectively
Air drain and the cooperation of outer shroud fuel tank；
It is characterized in that：The burner includes the air fuel gas premix chamber of the upper opening positioned at front, is located at center
Center escape pipe, central intake pipe, the inner ring mixing chamber positioned at right side, inner ring outlet interface, positioned at left side outer shroud mix
Chamber and outer shroud outlet interface, inner ring mixing chamber and outer shroud mixing chamber are pre- by interior ejector pipe and outer ejector pipe and air fuel gas respectively
Mixed chamber communicates, and central intake pipe is communicated across air fuel gas premix chamber with center escape pipe；Central intake pipe is pre- by air fuel gas
Mixed chamber top is divided into interior air fuel gas premix chamber and outer air gas premixing chamber；Interior air fuel gas premix chamber and interior ejector pipe phase
To front panel on be provided with interior combustion gas intake interface, interior combustion gas intake interface outlet side is equipped with nozzle；Outer air gas premixing
Outer combustion gas intake interface is provided in the chamber front panel opposite with outer ejector pipe, outer combustion gas intake interface outlet side is equipped with nozzle；
The bottom of the center escape pipe is provided with nozzle, and air inlet duct, stove are provided on the center escape pipe on nozzle top
There is the upper air slot of air next time being open to be communicated with air inlet duct on head；
Be provided with the last air air slot of under shed on the lower surface of the disk body of the distributor seat, under shed it is upper
Primary air air slot intersects with air feeding in center interface；With the flow-stopping plate of outer axial secondary-air passage cooperation；
The rear portion of air fuel gas premix chamber is provided with stabilier；
Further include partition board, partition board is bonded with the lower end of flow-stopping plate, and partition board is fixed together with disk body；
Center escape pipe, inner ring outlet interface and outer shroud outlet interface respectively with air feeding in center interface, inner ring intake interface
With outer shroud intake interface grafting, and support air feeding in center interface, inner ring intake interface and outer shroud intake interface respectively；Stabilier
Upper end supporting clapboard, last air air slot and next time air guide groove constitute center primary air flow-guiding channel.
A kind of three ring fire high-power burner of upper air inlet of adjustable primary air, is characterized in that：Also
Including interior jet flow guiding pipe and outer ejector pipe diversion pipe；
Interior jet flow guiding pipe and outer jet flow guiding pipe are respectively set in interior ejector pipe and outer ejector pipe, inside lead jet flow guiding
The inlet end of pipe is located at the interior combustion gas air pre-mixing intracavitary, and the inlet end that diversion pipe is penetrated in outer guiding is located at the outer gas-air
In premix chamber.
A kind of three ring fire high-power burner of upper air inlet of adjustable primary air, is characterized in that：Institute
It states and sets inner ring air guide chamber and outer shroud air guide chamber, inner ring air guide chamber and inner ring on the disk body between inner ring fuel tank and outer shroud fuel tank
Fuel tank communicates, and the lower end of inner ring air guide chamber is communicated with inner ring intake interface；Outer shroud air guide chamber is communicated with outer shroud fuel tank, outer shroud
The lower end of air guide chamber is communicated with outer shroud intake interface.
A kind of upper air inlet three ring fire high-power burner of the adjustable primary air, it is characterised in that：Further include
One circular blast baffle；
The bottom plate of the outer shroud fuel tank is equipped with support column, and the both ends of circular blast baffle and the upper end of support column are fixed
Connection；Circular blast baffle covers the bottom plate that the outer shroud air guide chamber communicates place's outer shroud fuel tank with outer shroud fuel tank.
A kind of three ring fire high-power burner of upper air inlet of adjustable primary air, is characterized in that：Institute
The lower end for stating the external annulus of external ring fire cover sets inner joint, and the lower end of external annulus is provided with mounting hole；
It is provided with axial card slot on the outer circumferential surface of the outer shroud siding of the outer shroud fuel tank of the distributor seat；
Body of expanding the market also is wrapped, the upper end of shank is fixedly connected with mounting hole；
The outer shroud siding of outer shroud fuel tank is inserted into inner joint, and the lower end support of the external annulus of upper end and external ring fire cover is matched
It closes, shank positioning chimeric with axial card slot.
A kind of three ring fire high-power burner of upper air inlet of adjustable primary air of the present invention, the setting of partition board is in guarantee
The primary air of ring fire and outer ring fire is sufficient；The setting of center primary air flow-guiding channel ensures that the primary air of central flame fills
Foot, had not only reduced carbon monoxide but also had improved efficiency.
Description of the drawings
Fig. 1 is the sectional view of the present invention.
Fig. 2 is A-A views of Fig. 1.
Fig. 3 is B-B views of Fig. 1.
Fig. 4 is the three-dimensional cutaway view of the present invention.
Fig. 5 is the front view of distributor seat of the present invention.
Fig. 6 is the rearview of distributor seat of the present invention.
Fig. 7 is the stereogram of the present invention.
Fig. 8 is one of the stereogram exploded view of the present invention.
Fig. 9 is the two of the stereogram exploded view of the present invention.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, as shown in Figure 1, Figure 2, Figure 3 shows, a kind of high-power combustion of three ring fire of upper air inlet of adjustable primary air
Burner, including burner 1, distributor seat 2, central flame cap 3, interior ring fire cover 4 and external ring fire cover 5, distributor seat 2 include disk body 21,
The air feeding in center interface 23 that is communicated with central flame cage positioned at the central flame cage 22 of disk body center upper surface, positioned at lower surface,
Around the interior axial secondary-air passage 24 of central flame cage 22, inner ring fuel tank 25, inner ring intake interface 251, outer shroud combustion gas
Slot 26, outer shroud intake interface 261 and the outer axial secondary-air passage 27 between inner and outer rings fuel tank 25,26；Central flame
Lid 3, interior ring fire cover 4 and external ring fire cover 5 coordinate with central flame cage 22, inner ring fuel tank 25 and outer shroud fuel tank 26 respectively；
The burner 1 includes air fuel gas premix chamber 11, the centrally located center escape pipe of the upper opening positioned at front
12, central intake pipe 13, the inner ring mixing chamber 14 positioned at right side, inner ring outlet interface 141, the outer shroud mixing chamber 15 positioned at left side
With outer shroud outlet interface 151, as shown in figure 3, inner ring mixing chamber 14 and outer shroud mixing chamber 15 are respectively by interior ejector pipe 142 and outer
Ejector pipe 152 is communicated with air fuel gas premix chamber 11, and central intake pipe 13 passes through the top and center of air fuel gas premix chamber 11
Air inlet pipe 12 communicates；The top of air fuel gas premix chamber 11 is divided into interior 111 He of air fuel gas premix chamber by central intake pipe 13
Outer air gas premixing chamber 112；It is provided with internal combustion in 111 front panel opposite with interior ejector pipe 142 of interior air fuel gas premix chamber
Gas intake interface 1111, interior 1111 outlet side of combustion gas intake interface are equipped with nozzle；Outer air gas premixing chamber 112 and outer ejector pipe
Outer combustion gas intake interface 1121 is provided in 152 opposite front panels, outer 1121 outlet side of combustion gas intake interface is equipped with nozzle；
The bottom of the center escape pipe 12 is provided with nozzle 7, and air inlet is provided on the center escape pipe 12 on 7 top of nozzle
Slot 121 also has on burner 1 the upper air slot of air next time 16 being open to be communicated with air inlet duct 121；
The last air air slot 211 of under shed is provided on the lower surface of the disk body 21 of the distributor seat 2, under open
The last air air slot 211 of mouth intersects with air feeding in center interface 23；With the outer axial auxiliary air positioned at 21 front of disk body
The flow-stopping plate 28 that channel 27 coordinates；
The rear portion of air fuel gas premix chamber 11 is provided with stabilier 17；
Further include partition board 6, partition board 6 is bonded with the lower end of flow-stopping plate 28, and partition board 6 is fixed together with disk body 21；
As shown in Fig. 4, Fig. 8, Fig. 9, center escape pipe 12, inner ring outlet interface 141 and outer shroud outlet interface 151 respectively with
261 grafting of air feeding in center interface 23, inner ring intake interface 251 and outer shroud intake interface, and respectively support air feeding in center interface 23,
Inner ring intake interface 251 and outer shroud intake interface 261；The upper end supporting clapboard 6 of stabilier 17, last air air slot 211
Air guide groove 16 constitutes center primary air flow-guiding channel next time.
The setting of partition board 6 ensures that auxiliary air enters between partition board 6 and the disk body 21 of distributor seat 2 subsequently into outer axial direction two
Secondary air duct 27, such as solid arrow direction in Fig. 1；On the other hand, ensure upper surface of the primary air through partition board 6 and burner 1
Between gap enter air fuel gas and boil in advance in the upper end of chamber 11；Such as the direction of hollow arrow in Fig. 1.
As a further improvement on the present invention：Further include interior jet flow guiding pipe 71 and outer ejector pipe diversion pipe 72；
Interior jet flow guiding pipe 71 and outer jet flow guiding pipe 72 are respectively set in interior ejector pipe 142 and outer ejector pipe 152, interior
The inlet end that diversion pipe 71 is penetrated in guiding is located in the interior combustion gas air pre-mixing chamber 111, outer to guide the inlet end for penetrating diversion pipe 72
In the outer combustion gas air pre-mixing chamber 112.In adjusting jet flow guiding pipe 71 and interior 111 front panel of combustion gas air pre-mixing chamber it
Between distance, realize regulating gas and air ratio；The front panel of outer jet flow guiding pipe 72 and outer combustion gas air pre-mixing chamber 112
Between gap realize regulating gas and air ratio.
Inner ring air guide chamber 291 and outer shroud air guide are set on disk body 21 between the inner ring fuel tank 25 and outer shroud fuel tank 26
Chamber 292, inner ring air guide chamber 291 are communicated with inner ring fuel tank 25, lower end and 261 phase of inner ring intake interface of inner ring air guide chamber 291
It is logical；Outer shroud air guide chamber 292 is communicated with outer shroud fuel tank 26, and the lower end of outer shroud air guide chamber 292 is communicated with outer shroud intake interface 261.
Further include a circular blast baffle 8,
The bottom plate of the outer shroud fuel tank 26 is equipped with support column 262, both ends and the support column 262 of circular blast baffle 8
Upper end be fixedly connected；Circular blast baffle 8 covers the outer shroud fuel tank that the outer shroud air guide chamber communicates place with outer shroud fuel tank
26 bottom plate；There is gap between circular blast baffle 8 and the external annulus of outer shroud fuel tank 26.To entering the combustion of outer shroud fuel tank 26
Gas air Mixture is shunted, and is prevented from fireworks.
The lower end of the external annulus of the external ring fire cover 5 sets inner joint 51, and the lower end of external annulus is provided with mounting hole 52,
It is provided with axial card slot 263 on the outer circumferential surface of the outer shroud siding of the outer shroud fuel tank 26 of the distributor seat 2；
Body 9 of expanding the market also is wrapped, the upper end of shank 9 is fixedly connected with mounting hole 52；
The outer shroud siding of outer shroud fuel tank 26 is inserted into inner joint 51, the lower end branch of upper end and the external annulus of external ring fire cover 5
Support cooperation, shank 9 are chimeric with axial card slot 52；Prevent external ring fire cover 5 from being rotated relative to distributor seat 2.
Above-described is only the preferred embodiments of the present invention.It should be pointed out that for the ordinary skill of this field
It for personnel, without departing from the principles of the present invention, can also make several improvements and modification, this is also considered as the present invention's
Protection domain.
Claims (5)
1. a kind of three ring fire high-power burner of upper air inlet of adjustable primary air, including burner, distributor seat, central flame
Lid, interior ring fire cover and external ring fire cover, distributor seat include disk body, positioned at disk body center upper surface central flame cage, be located under
Interior axial secondary-air passage, the inner ring of air feeding in center interface, circular central flame cage that surface is communicated with central flame cage are fired
Air drain, inner ring intake interface, outer shroud fuel tank, outer shroud intake interface and outer axial direction between inner and outer rings fuel tank are secondary
Air duct；Central flame cap, interior ring fire cover and external ring fire cover are matched with central flame cage, inner ring fuel tank and outer shroud fuel tank respectively
It closes；
It is characterized in that：The burner includes going out positioned at the air fuel gas premix chamber of upper opening of front, centrally located center
Tracheae, central intake pipe, the inner ring mixing chamber positioned at right side, inner ring outlet interface, outer shroud mixing chamber and outer shroud positioned at left side
Outlet interface, inner ring mixing chamber and outer shroud mixing chamber pass through interior ejector pipe and outer ejector pipe and air fuel gas premix chamber phase respectively
Logical, central intake pipe is communicated across air fuel gas premix chamber with center escape pipe；Central intake pipe will be on air fuel gas premix chamber
Part is divided into interior air fuel gas premix chamber and outer air gas premixing chamber；Before interior air fuel gas premix chamber is opposite with interior ejector pipe
Interior combustion gas intake interface is provided on siding, interior combustion gas intake interface outlet side is equipped with nozzle；Outer air gas premixing chamber with it is outer
Outer combustion gas intake interface is provided in the opposite front panel of ejector pipe, outer combustion gas intake interface outlet side is equipped with nozzle；
The bottom of the center escape pipe is provided with nozzle, is provided with air inlet duct on the center escape pipe on nozzle top, on burner
The also upper air slot of air next time being open is communicated with air inlet duct；
The last air air slot of under shed, the last time of under shed are provided on the lower surface of the disk body of the distributor seat
Air air slot intersects with air feeding in center interface；With the flow-stopping plate of outer axial secondary-air passage cooperation；
The rear portion of air fuel gas premix chamber is provided with stabilier；
Further include partition board, partition board is bonded with the lower end of flow-stopping plate, and partition board is fixed together with disk body；
Center escape pipe, inner ring outlet interface and outer shroud outlet interface respectively with air feeding in center interface, inner ring intake interface and outer
Ring intake interface grafting, and support air feeding in center interface, inner ring intake interface and outer shroud intake interface respectively；The upper end of stabilier
Supporting clapboard, last air air slot and next time air guide groove constitute center primary air flow-guiding channel.
2. a kind of three ring fire high-power burner of upper air inlet of adjustable primary air according to claim 1, feature
It is：Further include interior jet flow guiding pipe and outer ejector pipe diversion pipe；
Interior jet flow guiding pipe and outer jet flow guiding pipe are respectively set in interior ejector pipe and outer ejector pipe, and diversion pipe is penetrated in interior guiding
Inlet end is located at the interior combustion gas air pre-mixing intracavitary, and the inlet end that diversion pipe is penetrated in outer guiding is located at the outer combustion gas air pre-mixing
Intracavitary.
3. a kind of three ring fire high-power burner of upper air inlet of adjustable primary air according to claim 1, feature
It is：Inner ring air guide chamber and outer shroud air guide chamber, inner ring air guide are set on disk body between the inner ring fuel tank and outer shroud fuel tank
Chamber is communicated with inner ring fuel tank, and the lower end of inner ring air guide chamber is communicated with inner ring intake interface；Outer shroud air guide chamber and outer shroud fuel tank
It communicates, the lower end of outer shroud air guide chamber is communicated with outer shroud intake interface.
4. a kind of three ring fire high-power burner of upper air inlet of adjustable primary air according to claim 1, feature
It is：Further include a circular blast baffle,
The bottom plate of the outer shroud fuel tank is equipped with support column, and the both ends of circular blast baffle and the upper end of support column, which are fixed, to be connected
It connects；Circular blast baffle covers the bottom plate that the outer shroud air guide chamber communicates place's outer shroud fuel tank with outer shroud fuel tank.
5. a kind of three ring fire high-power burner of upper air inlet of adjustable primary air according to claim 1,2,3 or 4,
It is characterized in that：The lower end of the external annulus of the external ring fire cover sets inner joint, and the lower end of external annulus is provided with mounting hole,
It is provided with axial card slot on the outer circumferential surface of the outer shroud siding of the outer shroud fuel tank of the distributor seat；
Body of expanding the market also is wrapped, the upper end of shank is fixedly connected with mounting hole；
The outer shroud siding of outer shroud fuel tank is inserted into inner joint, the lower end support cooperation of the external annulus of upper end and external ring fire cover, pin
Body positioning chimeric with axial card slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810574027.XA CN108518678A (en) | 2018-06-06 | 2018-06-06 | A kind of three ring fire high-power burner of upper air inlet of adjustable primary air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810574027.XA CN108518678A (en) | 2018-06-06 | 2018-06-06 | A kind of three ring fire high-power burner of upper air inlet of adjustable primary air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108518678A true CN108518678A (en) | 2018-09-11 |
Family
ID=63427056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810574027.XA Pending CN108518678A (en) | 2018-06-06 | 2018-06-06 | A kind of three ring fire high-power burner of upper air inlet of adjustable primary air |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108518678A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440255A (en) * | 2019-08-27 | 2019-11-12 | 中山市创图特金属制品有限公司 | A kind of upper air inlet burner of high combustion efficiency |
| CN112050214A (en) * | 2020-09-27 | 2020-12-08 | 宁波方太厨具有限公司 | Combustion assembly and combustor comprising same |
| CN112762441A (en) * | 2019-11-01 | 2021-05-07 | 嵊州市远见机械科技有限公司 | Structure is adjusted to gas air inlet that mixes |
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| CN106439809A (en) * | 2016-09-29 | 2017-02-22 | 中山市和美电器燃具有限公司 | Upside-air-inlet three-fire-ring high-power combustor |
| CN208764918U (en) * | 2018-06-06 | 2019-04-19 | 中山市和美电器燃具有限公司 | A kind of three ring fire high-power burner of upper air inlet of adjustable primary air |
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| CN200968608Y (en) * | 2006-06-22 | 2007-10-31 | 夏爱明 | Complete upper air intake combusting device |
| CN202032582U (en) * | 2011-03-09 | 2011-11-09 | 罗子健 | Stove burner with metal net |
| JP2014163525A (en) * | 2013-02-21 | 2014-09-08 | Harman Co Ltd | Gas burner |
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| CN208764918U (en) * | 2018-06-06 | 2019-04-19 | 中山市和美电器燃具有限公司 | A kind of three ring fire high-power burner of upper air inlet of adjustable primary air |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440255A (en) * | 2019-08-27 | 2019-11-12 | 中山市创图特金属制品有限公司 | A kind of upper air inlet burner of high combustion efficiency |
| CN112762441A (en) * | 2019-11-01 | 2021-05-07 | 嵊州市远见机械科技有限公司 | Structure is adjusted to gas air inlet that mixes |
| CN112050214A (en) * | 2020-09-27 | 2020-12-08 | 宁波方太厨具有限公司 | Combustion assembly and combustor comprising same |
| CN112050214B (en) * | 2020-09-27 | 2022-02-22 | 宁波方太厨具有限公司 | Combustion assembly and combustor comprising same |
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