CN107830521B - High-efficient combustor of multilayer oxygen suppliment and gas-cooker - Google Patents
High-efficient combustor of multilayer oxygen suppliment and gas-cooker Download PDFInfo
- Publication number
- CN107830521B CN107830521B CN201711070132.1A CN201711070132A CN107830521B CN 107830521 B CN107830521 B CN 107830521B CN 201711070132 A CN201711070132 A CN 201711070132A CN 107830521 B CN107830521 B CN 107830521B
- Authority
- CN
- China
- Prior art keywords
- outer ring
- heat insulation
- fire cover
- ring
- air
- 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.)
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 48
- 239000001301 oxygen Substances 0.000 title claims abstract description 48
- 238000009413 insulation Methods 0.000 claims abstract description 46
- 239000007789 gas Substances 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000010411 cooking Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims 1
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- 238000002485 combustion reaction Methods 0.000 description 9
- 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
- 238000004134 energy conservation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/14—Special features of gas burners
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The invention aims to provide a multi-layer oxygen-supplying high-efficiency combustor and a gas stove so as to effectively supply oxygen. The technical scheme of the invention is as follows: the utility model provides a high-efficient combustor of multilayer oxygen suppliment, has stove base, water collector, divide gas seat, inner ring fire lid and outer ring fire lid, its characterized in that: the burner is characterized in that the burner further comprises an oxygen supply heat insulation ring which surrounds the outer side of the outer ring fire cover, a plurality of second air inlets are formed in the side wall of the outer ring of the oxygen supply heat insulation ring, a plurality of first air inlets are formed in the side wall of the water receiving disc and used for sinking and installing below the panel of the gas stove, the gas distribution seat is provided with a transversely-through passage hole, a first passage which takes the first air inlets as air inlets and passes through the passage hole to supply secondary air to flames between the inner ring fire cover and the outer ring fire cover is further formed in the burner, and a second passage which takes the second air inlets as air inlets and supplies secondary air to the outer ring flames from the upper part of the outer ring fire cover is further formed.
Description
Technical Field
The invention relates to a combustor, in particular to a multi-layer oxygen supply high-efficiency combustor and a gas stove.
Background
The development of household stoves is increasingly focused on energy conservation and environmental protection, and the inner flame type gas stove is widely focused on by virtue of remarkable energy conservation effect. Therefore, inner flame type and sinking type are mostly adopted in the household gas range to improve the heat efficiency. Because the burning flame is directed to the central part of the burner, the space is supposed to be narrow. The inability to timely replenish sufficient oxygen during combustion has resulted in considerable limitations in the use of such combustion modes.
Therefore, how to increase the fire power of the burner and provide an effective oxygen supplementing mode at the same time, so that the increase of fire power and the improvement of efficiency can be realized, the CO emission can be effectively controlled, and the method becomes a great difficulty in the current sinking type inner flame burner technology.
Disclosure of Invention
The invention aims to solve the technical problems that: aiming at the problems, the high-efficiency burner and the gas stove with multilayer oxygen supply are provided to effectively supply oxygen.
The technical scheme adopted by the invention is as follows: the utility model provides a high-efficient combustor of multilayer oxygen suppliment for install on gas cooking utensils, the combustor includes the stove head seat, divides the gas seat with stove head seat gas circuit intercommunication, covers on the stove head seat and partly circumference at least surrounds the water collector that divides the gas seat, respectively with divide the inner ring fire lid and the outer ring fire lid of gas circuit intercommunication, its characterized in that: the burner is characterized in that the burner further comprises an oxygen supply heat insulation ring which surrounds the outer side of the outer ring fire cover, a plurality of second air inlets are formed in the side wall of the outer ring of the oxygen supply heat insulation ring, a plurality of first air inlets are formed in the side wall of the water receiving disc and used for sinking and installing below the panel of the gas stove, the gas distribution seat is provided with a transversely-through passage hole, a first passage which takes the first air inlets as air inlets and passes through the passage hole to supply secondary air to flames between the inner ring fire cover and the outer ring fire cover is further formed in the burner, and a second passage which takes the second air inlets as air inlets and supplies secondary air to the outer ring flames from the upper part of the outer ring fire cover is further formed.
The fire cover also comprises a third channel which takes the second air inlet hole as an air inlet and provides secondary air for flame between the inner ring fire cover and the outer ring fire cover through the channel hole.
The oxygen supply heat insulation ring further comprises a middle heat insulation ring and an inner air guide ring, a through hole is formed in the middle heat insulation ring, the second air inlet is matched with the through hole, and a gap between the top of the outer ring fire cover and the inner air guide ring forms a second lane of the second channel.
The inner air guide ring is provided with an air outlet hole, the second air inlet hole is matched with the through hole, and the air outlet hole forms a first branch channel of the second channel.
The lower end of the middle heat insulation ring and the upper surface of the bottom wall of the water receiving disc form a gap, and the outer peripheral surface of the middle heat insulation ring, the inner surface of the peripheral wall of the water receiving disc and the upper surface of the upper wall form gaps. The aim is to better form the air channel.
The through hole is at least partially higher than the upper surface of the outer ring fire cover. Aims to reduce the resistance on the outer side of the outer ring fire cover, and the secondary air is more smoothly supplemented.
A chamber serving as a first heat insulation area is formed between the outer ring side wall of the oxygen supply heat insulation ring and the middle heat insulation ring.
A gap serving as a second heat insulation area is reserved between the middle heat insulation ring of the oxygen supply heat insulation ring and the outer side wall of the outer ring fire cover.
The outer ring fire cover adopts an inner flame type fire cover, and the fire outlet direction points to the central area of the burner.
A gas cooker, characterized in that: the gas stove comprises the high-efficiency burner with multilayer oxygen supply.
The beneficial effects of the invention are as follows:
(1) The secondary air supply is carried out by taking the first oxygen supply channel with the first air inlet hole on the water receiving disc as an air inlet as the inner ring flame and the lower ring flame of the outer ring flame cover, so that the CO emission is effectively reduced and the heat rate is improved.
(2) The second oxygen supply channel taking the second air inlet hole on the oxygen supply heat insulation ring as an air inlet is divided into three secondary air after entering, and three-dimensional supply is formed for the inner ring flame and the outer ring flame, so that the generation of CO can be effectively restrained, and the heat efficiency can be improved.
(3) By arranging the multi-layer heat insulation areas, chemical heat loss is reduced, waste gas emission of carbon monoxide is also greatly reduced, and secondary air entering the first oxygen supply channel and the second oxygen supply channel can be preheated, so that combustion efficiency is improved.
(4) And an inner flame type fire cover is adopted, heat is gathered and burnt, the heating efficiency is high, and the heat loss is small.
(5) The air inlet channels communicated with the outer side and the inner side of the air distribution seat are arranged on the air distribution seat, and the air inlet channels on the air distribution seat are used as a part of the first oxygen supply channel and the second oxygen supply channel, so that the structure is compact, and the internal limited space is fully utilized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a perspective view of the present invention.
Fig. 2 is an exploded view of the present invention.
Fig. 3 is a schematic structural view of the present invention.
Fig. 4 is an enlarged schematic view of the portion a in fig. 3.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1: the embodiment is a multi-layer oxygen-supplying high-efficiency burner which is used for being installed on a gas cooker and is provided with a burner seat 5, a water receiving disc 4, an air distributing seat 3, an inner ring fire cover 2 and an outer ring fire cover 1, wherein the air distributing seat 3 is arranged on the burner seat 5 and is communicated with an air passage of the burner seat 5, the water receiving disc 4 covers the burner seat 5 and at least partially circumferentially surrounds the air distributing seat 3, and the inner ring fire cover 2 and the outer ring fire cover 1 are respectively arranged on the air distributing seat 3 and are communicated with the air passage of the air distributing seat 3.
The furnace head seat 5 is connected with an inner ring nozzle seat 10 and an outer ring nozzle seat 11, the inner ring nozzle seat 10 is connected with an inner ring nozzle 8 and an inner injection pipe 9, the outer ring nozzle seat 11 is connected with an outer ring nozzle 7 and an outer injection pipe 6, and the inner injection pipe 9 and the outer injection pipe 6 are sleeved into the furnace head seat 5.
After the kitchen gas reaches the inner ring gas inlet and the outer ring gas inlet, the structure sprays the gas into the corresponding inner injection pipe 9 and the outer injection pipe 6 through the inner ring nozzle seat 10 and the outer ring nozzle seat 11 and the inner ring nozzle 8 and the outer ring nozzle 7, primary air is brought into the respective injection pipes under the injection action of the inner injection pipe 9 and the outer injection pipe 6, and the formed mixed gas of the inner ring gas and the air is carried out in the burner seat 5. Then, the inner ring mixed gas reaches the fire holes of the inner ring fire cover 2 through the gas distribution seat 3 to flow out, and secondary air is mixed for combustion; the outer ring mixed gas reaches the fire holes of the outer ring fire cover 1 through the gas distribution seat 3 to flow out, and then secondary air is mixed for combustion.
In this embodiment, an oxygen supply heat insulation ring 12 is surrounded and arranged outside the outer ring fire cover 1, and a plurality of second air inlet holes 1202 are arranged on the side wall 1201 of the outer ring of the oxygen supply heat insulation ring 12. The side wall of the water receiving disc 4 is provided with a plurality of first air inlets 401 which are used for sinking below the panel of the gas stove.
The gas distributing seat 3 is provided with a supporting disc 301 and a gas outlet circular ring 302 matched with the outer ring fire cover 1, the gas outlet circular ring 302 is connected to the supporting disc 301 through 4 vertical connecting pipes 303 and is communicated with the lower part of the supporting disc 301 through the connecting pipes 303, and a transverse through channel hole 305 is formed between the lower part of the gas outlet circular ring 302 and two communicating pipes 303 in the area of the supporting disc 301; the center of the supporting disk 301 is provided with a center air outlet 304 which is matched with the inner ring fire cover 2.
In this embodiment, a first channel 13 and a second channel 14 are formed in the burner, wherein the first channel 13 takes a first air inlet 401 as an air inlet and supplies secondary air to flame between the inner ring fire cover 2 and the outer ring fire cover 1 through a channel hole 305; the second channel 14 takes the second air inlet hole 1202 as an air inlet and provides secondary air to the outer ring flame from the upper part of the outer ring flame cover 1, so that the CO emission is effectively reduced, and the heat rate is improved.
Example 2: on the basis of embodiment 1, the embodiment further comprises a third channel 15, the third channel 15 takes the second air inlet 1202 as an air inlet and provides secondary air for flames between the inner annular fire cover 2 and the outer annular fire cover 1 through the channel hole 305, and three-dimensional supply is formed for the inner annular flames and the outer annular flames, so that CO generation is effectively inhibited and thermal efficiency is improved.
Example 3: on the basis of embodiment 2, the oxygen supply heat insulation ring 12 in this embodiment further includes a middle heat insulation ring 1203 and an inner air guide ring 1204, the outer ring side wall 1201, the middle heat insulation ring 1203 and the inner air guide ring 1204 are sequentially arranged from outside to inside, and a plurality of through holes 1206 are arranged on the middle heat insulation ring 1203. The second air inlet hole 1202 on the outer ring side wall 1201 in this example is matched with the through hole 1206 on the middle heat insulation ring 1203, and the gap between the top of the outer ring fire cover 1 and the inner air guide ring 1204 forms a second branch 1402 of the second channel 14.
Example 4: on the basis of embodiment 3, in this embodiment, a plurality of air outlet holes 1205 are provided on the inner air guide ring 1204, in this embodiment, the second air inlet holes 1202 on the outer ring side wall 1201 cooperate with the through holes 1206 on the middle heat insulation ring 1203, and the air outlet holes 1205 on the inner air guide ring 1204 form the first channel 1401 of the second channel 14.
Example 5: in order to better form an air channel, in this embodiment, on the basis of embodiment 4, a gap is formed between the lower end of the middle heat insulation ring 1203 and the upper surface of the bottom wall of the water pan 4; gaps are formed between the outer peripheral surface of the middle heat insulating ring 1203 and the inner surface of the peripheral wall and the upper surface of the upper wall of the water receiving tray. As shown in fig. 4, the lower end of the middle heat insulating ring 1203 is leveled with the lower surface of the air outlet ring 302, so that the external air can be more easily guided to supply oxygen to the flame between the inner ring fire cover 2 and the outer ring fire cover 1 through the third channel.
Example 6: based on embodiment 5, the through hole 1206 on the middle heat insulation ring 1203 in this embodiment is at least partially higher than the upper surface of the outer ring fire cover 1, so as to reduce the resistance on the outer side of the outer ring fire cover 1, and make the secondary air supplement smoother.
Example 7: in the present example, a chamber was formed between the outer ring side wall 1201 of the oxygen supplying heat insulating ring 12 and the intermediate heat insulating ring 1203 as a first heat insulating region in addition to example 6. The heat-insulating structure reduces chemical heat loss, greatly reduces the exhaust emission of carbon monoxide, and can preheat the secondary air entering the first oxygen supply channel and the second oxygen supply channel, thereby improving combustion efficiency.
Example 8: on the basis of example 7, a gap was left between the middle heat insulating ring 1203 of the oxygen supply heat insulating ring 12 and the outer side wall of the outer ring fire cover 1 as a second heat insulating region.
Example 9: based on embodiment 8, the outer ring fire cover 1 adopts an inner flame type fire cover, the fire outlet direction points to the central area of the burner, and the fire holes and the fire grooves are distributed on the inner side of the outer ring fire cover 1, so that heat gathering combustion is realized, the heating efficiency is high, and the heat loss is small.
The inner flame design of this embodiment forms a semi-closed combustion zone, forms a third thermal insulation zone for high temperature flame, and forms triple thermal insulation by adding a second thermal insulation zone and a first thermal insulation zone formed by an oxygen supply thermal insulation ring. The formation of the three-layer heat insulation area also increases the heat radiation to the bottom of the pot, and simultaneously preheats the secondary air entering the first and the second oxygen supply channels, thereby achieving the improvement of combustion efficiency.
Example 10: the embodiment is a gas stove with the multi-layer oxygen supply high-efficiency burner described in the embodiment.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a high-efficient combustor of multilayer oxygen suppliment for install on gas cooking utensils, the combustor includes stove head seat (5), divides gas seat (3) with stove head seat (5) gas circuit intercommunication, covers on stove head seat (5) and partly circumference at least surrounds water collector (4) that divides gas seat (3), respectively with divide inner ring fire lid (2) and outer ring fire lid (1) of gas circuit intercommunication of gas seat (3), its characterized in that: the burner further comprises an oxygen supply heat insulation ring (12) which is arranged outside the outer ring fire cover (1) in a surrounding mode, a plurality of second air inlets (1202) are formed in the outer ring side wall (1201) of the oxygen supply heat insulation ring (12), a plurality of first air inlets (401) are formed in the side wall of the water receiving disc (4) and are used for sinking below a panel of the gas stove, the gas separation seat (3) is provided with a transversely-through channel hole (305), the burner is internally provided with a first channel (13) which takes the first air inlets (401) as air inlets and supplies secondary air to flames between the inner ring fire cover (2) and the outer ring fire cover (1) through the channel hole (305), and a second channel (14) which takes the second air inlets (1202) as air inlets and supplies secondary air to the outer ring flames from the upper side of the outer ring fire cover (1);
the burner further comprises a third channel (15) which takes the second air inlet hole (1202) as an air inlet and provides secondary air for flame between the inner ring fire cover (2) and the outer ring fire cover (1) through the channel hole (305);
the oxygen supply heat insulation ring (12) further comprises a middle heat insulation ring (1 203) and an inner air guide ring (1204), a through hole (1206) is formed in the middle heat insulation ring (1203), the second air inlet hole (1202) is matched with the through hole (1206), and a gap between the top of the outer ring fire cover (1) and the inner air guide ring (1204) forms a second channel (1402) of the second channel (14);
the outer ring fire cover (1) adopts an inner flame type fire cover, and the fire outlet direction points to the central area of the burner.
2. The multi-layer oxygen-fed high efficiency burner of claim 1, wherein: the inner air guide ring (1204) is provided with an air outlet hole (1205), the second air inlet hole (1202) is matched with the through hole (1206), and the air outlet hole (1205) forms a first channel (1401) of the second channel (14).
3. The multi-layered oxygen-fed high efficiency burner according to claim 1 or 2, wherein: the lower end of the middle heat insulation ring (1203) forms a gap with the upper surface of the bottom wall of the water receiving disc, and the outer peripheral surface of the middle heat insulation ring (1203) forms a gap with the inner surface of the peripheral wall of the water receiving disc and the upper surface of the upper wall.
4. The multi-layer oxygen-fed high efficiency burner of claim 1, wherein: the through hole (1206) is at least partially higher than the upper surface of the outer ring fire cover.
5. The multi-layer oxygen-fed high efficiency burner of claim 1, wherein: a chamber serving as a first heat insulation area is formed between the outer ring side wall (1201) of the oxygen supply heat insulation ring (12) and the middle heat insulation ring (1203).
6. The multi-layer oxygen-fed high efficiency burner of claim 5, wherein: a gap serving as a second heat insulation area is reserved between the middle heat insulation ring (1203) of the oxygen supply heat insulation ring (12) and the outer side wall of the outer ring fire cover (1).
7. A gas cooker, characterized in that: the gas stove comprises the multi-layer oxygen supply high-efficiency burner as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711070132.1A CN107830521B (en) | 2017-11-03 | 2017-11-03 | High-efficient combustor of multilayer oxygen suppliment and gas-cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711070132.1A CN107830521B (en) | 2017-11-03 | 2017-11-03 | High-efficient combustor of multilayer oxygen suppliment and gas-cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107830521A CN107830521A (en) | 2018-03-23 |
| CN107830521B true CN107830521B (en) | 2024-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711070132.1A Active CN107830521B (en) | 2017-11-03 | 2017-11-03 | High-efficient combustor of multilayer oxygen suppliment and gas-cooker |
Country Status (1)
| Country | Link |
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| CN (1) | CN107830521B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386838A (en) * | 2018-03-27 | 2018-08-10 | 广东美的厨房电器制造有限公司 | Burner and gas cooker |
| CN111998340B (en) * | 2020-09-07 | 2021-08-20 | 宁波方太厨具有限公司 | Stove burner |
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| CN106247411A (en) * | 2016-08-31 | 2016-12-21 | 宁波方太厨具有限公司 | A kind of burner sunk type gas-cooker |
| CN206055622U (en) * | 2016-09-29 | 2017-03-29 | 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 |
| CN106765083A (en) * | 2016-12-01 | 2017-05-31 | 中山金木楠智能家居有限公司 | A kind of full upward-air-feeding type stove combustor and kitchen range |
| CN106940013A (en) * | 2017-04-24 | 2017-07-11 | 杭州老板电器股份有限公司 | A kind of burner with high efficiency with oxygen supplement function |
| CN207716418U (en) * | 2017-11-03 | 2018-08-10 | 杭州老板电器股份有限公司 | The burner with high efficiency and gas-cooker of multilayer oxygen supply |
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|---|---|
| CN107830521A (en) | 2018-03-23 |
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