CN109959005A - A kind of burner for gas-cooker - Google Patents
A kind of burner for gas-cooker Download PDFInfo
- Publication number
- CN109959005A CN109959005A CN201711434571.6A CN201711434571A CN109959005A CN 109959005 A CN109959005 A CN 109959005A CN 201711434571 A CN201711434571 A CN 201711434571A CN 109959005 A CN109959005 A CN 109959005A
- Authority
- CN
- China
- Prior art keywords
- outer ring
- gas
- air
- chamber
- cooker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000005192 partition Methods 0.000 claims description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 30
- 238000002485 combustion reaction Methods 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 125000004122 cyclic group Chemical group 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 239000000567 combustion gas Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000004033 diameter control Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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
- F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
- F23D14/06—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with radial outlets at the burner head
-
- 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
-
- 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
- F23D14/64—Mixing devices; Mixing tubes with injectors
-
- 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
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/74—Preventing flame lift-off
Abstract
The present invention relates to a kind of burners for gas-cooker, it include pedestal, the cyclic annular fire cover that mixing chamber on the base is set and is arranged on mixing chamber, fire hole is provided in fire cover, pedestal and mixing chamber have blast tube up and down, it is characterized by: being additionally provided with the airport above or below fire hole in fire cover, pedestal is formed with the air chamber of connection airport in mixing chamber periphery, the air chamber is separated at least two separate chambers by least one spaced apart radial separations wall, the air ejection pipe and nozzle compatible with the air intake end of air ejection pipe corresponding to each separate chamber are provided on the periphery wall of the air chamber, compared with prior art, the advantage of the invention is that using at least two air ejection pipes come the air capacity of independent control air chamber, it is controlled by different nozzle diameters The air capacity of different sections is to reach homogenous combustion, even flame, homogeneous heating and the low purpose of amount of nitrogen oxides.
Description
Technical field
The present invention relates to a kind of burners for gas-cooker, more particularly to a kind of use that can reduce nitrogen oxides generation
In the burner of gas-cooker.
Background technique
The burner of existing gas cooker is generally all disposed within outer ring fire cover and inner-ring fire cover, and wherein inner-ring fire cover is general
In cylindrical body, circumferentially offer fire hole in multiple circles in the side wall of cylindrical body, these interior fire holes generally with level
Face has angle, and angle is 20~40 degree.When this burner operation, the obvious oblique outer ejection of interior ring flame is contacted with the bottom of a pan
When form cricoid heating coil, therefore, be easy to cause the bottom of a pan heating uneven.In addition the inner ring combustion gas of this burner is not due to
It is directly sprayed from the fire hole of inner-ring fire cover by buffering, thus the air velocity at fire hole is very fast, interior ring flame is not easy steady flame,
Also it be easy to cause burning insufficient, more CO and NO is generated in combustion processXDeng the gas for having very major injury to human body.Equally
Ground, external ring fire cover is generally annular in shape, include annular top wall and from the inside edge of the annular top wall, outer ledge is vertical or inclines
It is formed with outer ring mixing chamber between the internal ring wall that extends obliquely, external annulus, outer fire hole is provided on external annulus, outer fire hole is same
There is angle with horizontal plane, but this kind of burner is still easy to influence the sucking of its primary air, primary air is insufficient, burning
When just will appear yellow fire, insufficient carbon monoxide in flue gas that further will lead to that burns is exceeded, in addition, this kind of burner is inevitable
Meeting the problem of generating flame uneven (such as flame has length, and heating is uneven), arrival and people with world energy sources crisis
The raising of environmental consciousness, the efficiency and discharge have to combustion gas has increasingly higher demands, to reach low NOXRequirement, because
This needs the burner to existing kitchen range to reach low NOXIt is improved further.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of to improve burner for above-mentioned state of the art
The burner for gas-cooker of homogenous combustion.
The technical scheme of the invention to solve the technical problem is: this is used for the burner of gas-cooker, include
Pedestal, setting mixing chamber on the base and the cyclic annular fire cover being covered on mixing chamber are provided with fire hole, feature in the fire cover
It is: is additionally provided with the airport of the neighbouring fire hole in the fire cover, is formed with the sky for being connected to the airport on the pedestal
Gas chamber, the air chamber are and circumferentially spaced at least two by least one partition wall independently of the mixing chamber
Separate chamber, each separate chamber are communicated with independent air ejection pipe, are arranged at the air intake end of the air ejection pipe
There is compatible nozzle.
Further, the airport (2,2 ', 2 ") is located above or below the fire hole.
Further, air duct is set in the mixing chamber periphery of fire cover, which can also be with for external ring fire cover
For interior ring fire cover, when for external ring fire cover, the fire cover includes the external ring fire cover being connected on the pedestal, the external ring fire cover
Annular top wall and from the inside edge of the annular top wall, outer ledge is vertical or the internal ring wall, the external annulus that extend obliquely downward
Between be formed with outer ring mixing chamber, the external ring fire cover external annulus is equipped with multiple outer ring fire holes, and the pedestal is equipped with connection
The periphery of the outer ring mixing chamber is arranged in the outer ring blast tube of the outer ring mixing chamber, the air chamber.The air chamber
Air is ejected by air ejection pipe and nozzle in room, when fuel gas mixture leaves the burning of outer ring fire hole, the spray of air ejection pipe
Air out supplies outer ring fire hole, and sufficient auxiliary air is provided for combustion gas, guarantees fuel gas mixture full combustion, improves
The thermal efficiency；Meanwhile each air ejection Guan Junneng guarantees that the air capacity of each separate chamber can be according to outer to separately adjustable injection volume
Ring fire cover combustion flame state adjusts the length of flame to adjust the amount of auxiliary air, to reach while lower nitrogen oxides
Improve the thermal uniformity of burning.
In order to reduce the temperature of outer ring fire hole root, the generation of nitrogen oxides is reduced, the airport inlet end is located at institute
It states on the lower end surface of external annulus, the airport outlet side is located on the external annulus of outer ring fire hole lower part.
For the purposes of reducing the temperature of outer ring fire hole root flame, the generation of nitrogen oxides, airport and outer ring fire are reduced
The arrangement in hole can also have following arrangement setting: the crater of the outlet side of the airport and the outer ring fire hole is staggeredly set
It sets.
Preferably, it is 1.5~2 degree that the axis of the axis of the airport and the outer ring fire hole, which is formed with an angle α,.
Best, the crater of the outlet side of the airport and the outer ring fire hole is point-blank.
It can also be the outlet side of the airport and between the crater of two neighboring outer ring fire hole.
In order to enable the flame stabilization of outer ring fire hole, plays the role of steady flame, so that the flame of entire external ring fire cover is more
Stablize, the generation of anti-anti-avulsion fire phenomenon, is arranged at intervals with below the outer ring fire hole and to be connected with the outer ring mixing chamber
Stable flame hole, the stable flame hole and outer ring fire hole are circumferentially spaced.
Further, the fire cover further includes having interior ring fire cover, the top surface inner wall and annular inner wall shape of the interior ring fire cover
At center mixing chamber, the annular inner wall of the interior ring fire cover offers the inner ring fire hole for being connected to extraneous center mixing chamber.Interior ring fire
Lid is tubular fire cover, naturally it is also possible to which, for cyclic annular fire cover, the periphery of center mixing chamber is provided with the same air of same external ring fire cover
Airport similarly can be set in the lower section of chamber, inner ring fire hole, thus the thermal uniformity that ring fire cover burns in improving.
Compared with the prior art, the advantages of the present invention are as follows using at least two air ejection pipes come independent control air chamber
The air capacity of the air capacity of room, each separate chamber can draw according to the flame length and amount of nitrogen oxides of fire cover fire hole to determine
The diameter for penetrating nozzle controls different sections of air capacity by different nozzle diameters to reach homogenous combustion, even flame, heating
Uniform and low amount of nitrogen oxides purpose.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1；
Fig. 2 is the structural schematic diagram of pedestal in the embodiment of the present invention 1；
Fig. 3 is the cross-sectional view of Fig. 1；
Fig. 4 is the structural schematic diagram of external ring fire cover in the embodiment of the present invention 1；
Fig. 5 is the cross-sectional view of Fig. 4；
Fig. 6 is the structural schematic diagram of external ring fire cover in the embodiment of the present invention 2；
Fig. 7 is the structural schematic diagram of external ring fire cover in the embodiment of the present invention 3；
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Embodiment 1
As shown in Fig. 1~5, this for gas-cooker burner include pedestal 1, the mixing chamber being arranged on pedestal 1 and
Cyclic annular fire cover on mixing chamber is set, which can be external ring fire cover 7 or interior ring fire cover 9, the present embodiment
It is that detailed description is unfolded based on lid with outer ring, the annular top wall 71 of external ring fire cover 7 and from the inside edge of the annular top wall 71, outer
Side edge it is vertical or extend obliquely downward internal ring wall 72, be formed with outer ring mixing chamber 74 between external annulus 73, outside external ring fire cover 7
Ring wall 73 is equipped with multiple outer ring fire holes 75, the airport being additionally provided with above or below outer ring fire hole 75 on external ring fire cover 7
2, pedestal 1 is equipped with the outer ring blast tube 75 of connection outer ring mixing chamber 74, and pedestal 1 is formed with connection air in mixing chamber periphery
The air chamber 3 in hole 2, while air chamber 3 is separated into three separate chambers 31 by spaced apart three radial separations walls 4,
Be provided on the periphery wall of air chamber 3 corresponding to each separate chamber 31 air ejection pipe 5 and with air ejection pipe 5
The compatible nozzle 6 in air intake end.Using three air ejection pipes 5 come the air capacity of independent control air chamber 3, each independence
The air capacity of chamber 31 can determine the straight of driving nozzle 6 according to the flame length of 7 fire hole of external ring fire cover and amount of nitrogen oxides
Diameter, by the air capacity of different 6 diameter control difference sections of nozzle to reach homogenous combustion, even flame, homogeneous heating and
The low purpose of amount of nitrogen oxides.
Wherein, outside 2 inlet end of airport is located on the lower end surface of 7 external annulus 73 of external ring fire cover, 2 outlet side of airport is located at
On the external annulus 73 of 75 lower part of ring fire hole.In order to reduce the temperature of 75 root of outer ring fire hole, the generation of nitrogen oxides, air are reduced
The arrangement mode of hole 2 and outer ring fire hole 75 be preferably airport 2 outlet side and outer ring fire hole 75 crater in straight line
On.In addition, in order to enable the flame stabilization of outer ring fire hole 75, plays the role of steady flame, so that the flame of entire external ring fire cover 7 is more
Add stabilization, the generation of anti-anti-avulsion fire phenomenon, the lower section of outer ring fire hole 75 is arranged at intervals with stable flame hole 8, stable flame hole 8 and outer ring fire hole
75 is circumferentially spaced.
And pedestal 1 is provided centrally with interior ring fire cover 9, during the top surface inner wall 91 and annular inner wall 92 of interior ring fire cover 9 formed
Heart mixing chamber 93, the annular inner wall 92 of interior ring fire cover 9 offer the inner ring fire hole 94 for being connected to extraneous center mixing chamber 93, pedestal 1
It is equipped with the center blast tube 40 of connection center mixing chamber 93, wherein center blast tube 40 is connected to the first ejector pipe 20, outside
Ring blast tube 75 is connected to the second ejector pipe 30；Certainly ring fire cover 9 or cyclic annular fire cover, the periphery of center mixing chamber 93 in
The air chamber 3 being provided with as same external ring fire cover 7, airport 2 similarly can be set in the lower section of inner ring fire hole 94, to mention
The thermal uniformity that ring fire cover 9 burns in height.Finally, the side of outer ring mixing chamber 74 it is uniformly distributed there are four communicated with atmosphere it is secondary into
Air port 10, air can supplement the outer ring flame on external ring fire cover 7 after entering mixing chamber from secondary air inlet 10 and add to
Interior ring flame on interior ring fire cover 9.
Embodiment 2
Substantially similar to the structure of embodiment 1, difference is: the outlet side of airport 2 ' and the fire out of outer ring fire hole 75 '
Mouth is staggered, and it is 1.95 degree that the axis of airport 2 ', which is formed with an angle α with the axis of outer ring fire hole 75 ', as shown in Figure 6.
Embodiment 3
Substantially similar to the structure of embodiment 1, difference is: the outlet side of airport 2 " and be located at two neighboring outer ring fire
Between the crater in hole 75 ", as shown in Figure 7.
The embodiment of the present invention is by taking outer ring mixing chamber and external ring fire cover as an example, but design of the invention can also equally be used
In the embodiment of inner ring mixing chamber (or center mixing chamber) and interior ring fire cover (or central flame cap), repeat no more.
Claims (10)
1. a kind of burner for gas-cooker includes pedestal (1), the mixing chamber being arranged on pedestal (1) and is covered on mixed
Fire cover above gas chamber is provided with fire hole in the fire cover, it is characterised in that: the sky of the neighbouring fire hole is additionally provided in the fire cover
Stomata (2,2 ', 2 ") is formed with the air chamber (3) for being connected to the airport (2,2 ', 2 "), the sky on the pedestal (1)
Gas chamber (3) is and circumferentially spaced at least two separate chambers by least one partition wall (4) independently of the mixing chamber
(31), each separate chamber (31) is communicated with independent air ejection pipe (5), in the air intake of the air ejection pipe (5)
End is provided with compatible nozzle (6).
2. the burner according to claim 1 for gas-cooker, it is characterised in that: airport (2,2 ', the 2 ") position
Above or below the fire hole.
3. the burner according to claim 1 for gas-cooker, it is characterised in that: the fire cover is described including being connected to
External ring fire cover (7,7 ', 7 ") on pedestal (1), the annular top wall (71) of the external ring fire cover (7,7 ', 7 ") and from the ring-type push up
The inside edge of wall (71), outer ledge are vertical or the internal ring wall (72), the external annulus that extend obliquely downward are formed between (73)
Outer ring mixing chamber (74), external ring fire cover (7) external annulus (73) is equipped with multiple outer ring fire holes (75), on the pedestal (1)
Equipped with the outer ring blast tube (75) for being connected to the outer ring mixing chamber (74), air chamber (3) setting is mixed in the outer ring
The periphery of gas chamber (74).
4. the burner according to claim 3 for gas-cooker, it is characterised in that: airport (2) the inlet end position
In on the lower end surface of the external annulus (73), the airport (2,2 ', 2 ") outlet side be located at outer ring fire hole (75) lower part
External annulus (73) on.
5. the burner according to claim 3 for gas-cooker, it is characterised in that: the airport (2,2 ', 2 ")
The crater of outlet side and the outer ring fire hole (75) is staggered.
6. the burner according to claim 5 for gas-cooker, it is characterised in that: the airport (2,2 ', 2 ")
It is 1.5~2 degree that axis and the axis of the outer ring fire hole (75), which are formed with an angle α,.
7. the burner according to claim 3 for gas-cooker, it is characterised in that: the airport (2,2 ', 2 ")
The crater of outlet side and the outer ring fire hole (75) is point-blank.
8. the burner according to claim 3 for gas-cooker, it is characterised in that: the airport (2,2 ', 2 ")
Outlet side and be located at two neighboring outer ring fire hole (75) crater between.
9. being used for the burner of gas-cooker according to claim 3~8 any one claim, it is characterised in that: institute
State the stable flame hole (8) for being arranged at intervals with below outer ring fire hole (75) and being connected with the outer ring mixing chamber (74), the steady flame
Hole (8) and outer ring fire hole (75) are circumferentially spaced.
10. being used for the burner of gas-cooker according to claim 3~8 any one claim, it is characterised in that: institute
The side for stating outer ring mixing chamber (74) is provided at least two secondary air inlets (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711434571.6A CN109959005B (en) | 2017-12-26 | 2017-12-26 | Burner for gas stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711434571.6A CN109959005B (en) | 2017-12-26 | 2017-12-26 | Burner for gas stove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109959005A true CN109959005A (en) | 2019-07-02 |
| CN109959005B CN109959005B (en) | 2024-01-16 |
Family
ID=67022328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711434571.6A Active CN109959005B (en) | 2017-12-26 | 2017-12-26 | Burner for gas stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109959005B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112050214A (en) * | 2020-09-27 | 2020-12-08 | 宁波方太厨具有限公司 | Combustion assembly and combustor comprising same |
| CN113405125A (en) * | 2021-05-11 | 2021-09-17 | 广东美的白色家电技术创新中心有限公司 | Gas stove |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936548A (en) * | 2010-09-03 | 2011-01-05 | 华中科技大学 | Upper air inlet gas cookware |
| CN202267061U (en) * | 2011-08-30 | 2012-06-06 | 比亚迪股份有限公司 | Combustor of gas kitchen range |
| CN203586210U (en) * | 2013-10-12 | 2014-05-07 | 浙江莫尼厨具有限公司 | Adjustable upside-entrainment burner |
| CN103900080A (en) * | 2014-03-06 | 2014-07-02 | 宁波方太厨具有限公司 | Gas cooker combustor with stable inner ring flames |
| JP2016173122A (en) * | 2015-03-17 | 2016-09-29 | 東洋ゴム工業株式会社 | Air spring |
| CN106224963A (en) * | 2016-08-31 | 2016-12-14 | 宁波方太厨具有限公司 | Burner fire lid for gas-cooker |
| CN207945678U (en) * | 2017-12-26 | 2018-10-09 | 宁波方太厨具有限公司 | A kind of burner for gas-cooker |
-
2017
- 2017-12-26 CN CN201711434571.6A patent/CN109959005B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936548A (en) * | 2010-09-03 | 2011-01-05 | 华中科技大学 | Upper air inlet gas cookware |
| CN202267061U (en) * | 2011-08-30 | 2012-06-06 | 比亚迪股份有限公司 | Combustor of gas kitchen range |
| CN203586210U (en) * | 2013-10-12 | 2014-05-07 | 浙江莫尼厨具有限公司 | Adjustable upside-entrainment burner |
| CN103900080A (en) * | 2014-03-06 | 2014-07-02 | 宁波方太厨具有限公司 | Gas cooker combustor with stable inner ring flames |
| JP2016173122A (en) * | 2015-03-17 | 2016-09-29 | 東洋ゴム工業株式会社 | Air spring |
| CN106224963A (en) * | 2016-08-31 | 2016-12-14 | 宁波方太厨具有限公司 | Burner fire lid for gas-cooker |
| CN207945678U (en) * | 2017-12-26 | 2018-10-09 | 宁波方太厨具有限公司 | A kind of burner for gas-cooker |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113405125A (en) * | 2021-05-11 | 2021-09-17 | 广东美的白色家电技术创新中心有限公司 | Gas stove |
| CN113405125B (en) * | 2021-05-11 | 2023-12-15 | 广东美的白色家电技术创新中心有限公司 | Gas stove |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109959005B (en) | 2024-01-16 |
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