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WO2006114063A1 - A gas burner - Google Patents

A gas burner Download PDF

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Publication number
WO2006114063A1
WO2006114063A1 PCT/CN2006/000959 CN2006000959W WO2006114063A1 WO 2006114063 A1 WO2006114063 A1 WO 2006114063A1 CN 2006000959 W CN2006000959 W CN 2006000959W WO 2006114063 A1 WO2006114063 A1 WO 2006114063A1
Authority
WO
WIPO (PCT)
Prior art keywords
central
peripheral
nozzle
gas mixing
chamber
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.)
Ceased
Application number
PCT/CN2006/000959
Other languages
English (en)
French (fr)
Inventor
Guoying Zou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Shuaikang Electric Stock Co Ltd
Original Assignee
Zhejiang Shuaikang Electric Stock Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang Shuaikang Electric Stock Co Ltd filed Critical Zhejiang Shuaikang Electric Stock Co Ltd
Publication of WO2006114063A1 publication Critical patent/WO2006114063A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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
    • 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
    • F23D2900/14062—Special features of gas burners for cooking ranges having multiple flame rings
    • 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
    • F23D2900/14064—Burner heads of non circular shape

Definitions

  • the present invention relates to a cooktop, and more particularly to a gas burner.
  • Cipheral Patent No. ZL03241583. 4 discloses a gas burner, which comprises a fire cover, a fire-breathing device, a base and an air intake device, and the fire-breathing device has a central fire ring, an inner fire ring and an outer fire ring.
  • a central gas mixing chamber is formed in the central fire ring, and a central gas mixing tube is arranged therein, and two symmetrically distributed peripheral gas mixing chambers are formed between the inner ring and the outer ring, each of the peripheral gas
  • the mixing chamber is provided with a peripheral gas mixing tube on one side, and the base is provided with a central nozzle chamber corresponding to the central gas mixing tube and two peripheral nozzle chambers corresponding to the peripheral gas mixing tube, and a separate
  • the central air passage is provided with a central nozzle corresponding to the central nozzle chamber and a peripheral nozzle corresponding to the peripheral nozzle chamber.
  • the present invention is directed to overcoming the deficiencies of the prior art described above, and provides a gas burner having a simple structure, convenient processing, uniform flame, large intermediate firepower, and ingenious control.
  • a gas burner includes a fire cover, a fire-breathing device, a base, and an air intake device, wherein the fire-breathing device has a central fire ring, an inner fire ring, and an outer fire ring, and the center fire a central gas mixing chamber is formed in the circle, and the central gas mixing chamber is provided with a central gas mixing tube; at least three uniformly distributed peripheral gas mixing chambers are formed between the inner ring and the outer ring a peripheral gas mixing tube is disposed in a middle portion of each of the peripheral gas mixing chambers, wherein the base is provided with a central nozzle chamber corresponding to the central gas mixing tube, and a pair of the peripheral gas mixing tubes _
  • the peripheral nozzle chamber should be provided, and the air intake device is provided with a central nozzle corresponding to the central nozzle chamber and a peripheral nozzle corresponding to the peripheral nozzle chamber.
  • peripheral gas mixing chamber, the peripheral nozzle chamber and the peripheral nozzle are three, and at least one of the three peripheral nozzle chambers and the central nozzle chamber are provided with a narrow passage for the primary air to flow in. .
  • An elongated passage for primary air inflow may also be provided between the three peripheral nozzle chambers and the central nozzle chamber.
  • the cross section of the outer ring and the center ring are both circular, and the cross section of the inner ring is "Y", and a plurality of shapes are formed between the inner ring and the center ring.
  • the through grooves into which the secondary air flows are separated from each of the peripheral gas mixing chambers by two pilot grooves and a partition wall.
  • the base comprises a disc, the central nozzle chamber is formed in the middle of the disc, and has a substantially circular cross section.
  • the top end is provided with an opening for the central gas mixing tube to extend, and the bottom end is provided for a through hole extending into the center nozzle;
  • the peripheral nozzle cavity is symmetrically distributed at an adjacent edge of the disk, and has a substantially trapezoidal cross section, and an opening at the top end for the peripheral gas mixing tube to extend into,
  • the bottom end is provided with a through hole through which the peripheral nozzle extends.
  • the outer end of the peripheral nozzle chamber is provided with a gap for the primary air to enter, and the space between the two adjacent peripheral nozzle chambers forms a secondary air inlet; the inner side of the top end surface of the central nozzle chamber is symmetrically arranged circumferentially;
  • the ribs, and the bottom end faces of the three ribs are in contact with the peripheral surfaces of the peripheral nozzle cavity, the central nozzle cavity and the elongated channel.
  • the central positioning raft has three sections, each of which is curved; the outer periphery of the central nozzle chamber is further provided with an ignition device and a fire extinguishing protection device.
  • the air intake device includes a peripheral nozzle air supply pipe and a central nozzle air supply pipe which are independent from each other;
  • the peripheral nozzle air supply pipe has a "Y" shape, which is formed by three tubular bodies intersecting and communicating, the center
  • the nozzle air supply pipe has a "one" shape, which intersects but does not communicate with the middle portion of the "Y" shaped peripheral nozzle air supply pipe.
  • the peripheral nozzles of u / U y are distributed at three ends of the peripheral nozzle air supply pipe, the outer nozzle of the outer nozzle is provided with an air inlet, and the other ends are closed by a plug;
  • the nozzle is disposed at an inner end of the central nozzle air supply pipe, and the outer end of the central nozzle air supply pipe is provided with an air inlet, and the inner end is closed.
  • the fire cover comprises a central fire cover and an outer fire cover, and the outer fire cover is composed of an outer fire cover decorative plate and an outer fire cover pressure plate.
  • a gas burner provided in accordance with the present invention has the following advantages over the prior art: First, the present invention designs three uniformly distributed peripheral gas mixing chambers, and at the same time, a peripheral gas mixing tube is disposed in the middle of the mixing chamber.
  • the utility model can not only make the supply of the gas required for peripheral combustion more stable, but also make the mixed gas flow evenly in the mixing chamber, thereby avoiding the gas mixing unevenness in the gas mixing chamber far away from the gas mixing tube region in the prior art, thereby ensuring The flame is uniform, and the yellow flame phenomenon does not occur as in the prior art.
  • the present invention skillfully provides three narrow passages between the peripheral nozzle chamber and the central nozzle chamber to replace the central primary air passage separately provided in the prior art, which is not only simple in structure, convenient in processing, but also advantageous in increasing the number of times.
  • the entrance area of the air makes the middle firepower large.
  • the invention has independent peripheral nozzle air supply pipe and central nozzle air supply pipe, which can realize the use of the burner three times of fire at the same time, or can be used only for the central fire alone, thereby being more convenient to control.
  • FIG. 1 is an exploded perspective view of a gas burner provided in accordance with the present invention.
  • Figure 2 is a schematic plan view of a gas burner provided in accordance with the present invention.
  • Figure 3 is a schematic cross-sectional view taken along line A-A of Figure 2;
  • FIG. 4 is a schematic bottom view of a gas burner according to the present invention after cutting a peripheral nozzle air supply pipe and a center nozzle air supply pipe;
  • Figure 5 is a schematic plan view of the base of the present invention.
  • Figure 6 is a schematic bottom view of the fire-breathing device of the present invention.
  • a gas burner according to the present invention includes a fire cover 1, a fire-breathing device 2, a base 3 and an air intake device 4; the fire cover 1 includes a central fire cover 11 and an external fire.
  • the outer fire cover is composed of an outer fire cover decorative plate 12 and an outer fire cover plate 13 having a central fire ring 21, an inner fire ring 22, and an outer fire ring 23, wherein The inner fire ring 22 is located between the central fire ring and the outer fire ring 23, a central gas mixing chamber 24 is formed in the central fire ring 21, and the central gas mixing chamber 24 is provided with a central gas mixing tube.
  • peripheral gas mixing chambers 25 are formed between the inner ring 22 and the outer ring 23, and a peripheral gas mixing tube 251 is disposed in a middle portion of each of the peripheral gas mixing chambers 25, thereby Not only can the supply of gas required for peripheral combustion be more fully stabilized, but also the mixed gas flows uniformly in the mixing chamber, so that the combustion flame is uniform;
  • the base 3 is provided with a center corresponding to the central gas mixing tube 241 Nozzle chamber 31 and said peripheral gas mixing tube 2
  • a peripheral nozzle chamber 32 corresponding to 51, the intake device 4 is provided with a central nozzle 41 corresponding to the central nozzle chamber 31 and a peripheral nozzle 42 corresponding to the peripheral nozzle chamber 32.
  • the peripheral gas mixing chamber 25, the peripheral nozzle chamber 32 and the peripheral nozzle 42 are all three; the three peripheral nozzle chambers 32 and the central nozzle chamber Between 31, there is a narrow passage 33 for primary air inflow, which is used to replace the central primary air passage in the prior art, which is not only simple in structure, convenient in processing, but also beneficial to increase the inlet area of the secondary air, so that the internal fire
  • the secondary air required for the combustion of the ring 22 and the central ring 21 is sufficiently and stably, so that the middle (i.e., the inner ring 22 and the center ring 21) is fired.
  • the outer fire ring 23 and the central fire ring 21 are both circular in cross section, and the inner fire ring 22 has a "Y" shape in cross section, and the outer shape is beautiful.
  • a plurality of through grooves 29 for inflowing secondary air are formed between the central fire rings 21, and the peripheral gas mixing chambers 25 are separated by two fire guiding grooves 26 and a partition wall 27, and the sides of the fire guiding grooves are And the partition wall separates the peripheral gas mixing chambers into separate parts, and of course, may be separated by a fire escape groove and two partition walls or three fire escape slots.
  • the base 3 includes a disc 34, and the central nozzle chamber 31 is formed in the middle of the disc, and has a substantially circular cross section, and a top end is provided for the center. a port 311 into which the gas mixing tube 241 extends, a bottom hole 312 through which the center nozzle 41 extends; the peripheral nozzle chamber 32 is symmetrically distributed at the adjacent edge of the disk 34, Section generally trapezoidal, top u / ⁇ uy is provided with an opening 321 into which the peripheral gas mixing tube 251 extends, and a bottom hole 322 through which the peripheral nozzle 42 extends.
  • the outer end of the peripheral nozzle chamber 32 is provided with a notch 323 for primary air to enter, and a space between the two adjacent peripheral nozzle cavities forms a secondary air inlet 324; an inner edge of the top end surface of the central nozzle cavity 31
  • the circumferential direction is symmetrically provided with three arc-shaped central positioning ports 313, and at least one of the peripheral nozzle chambers 32 is provided with an external positioning port 325 at the outer end, and the lower surface of the fire-spraying device 2 is provided with the center positioning
  • the ribs 313 and the outer positioning jaws 325 are matched with three ribs 28, and the bottom end faces of the three ribs are in contact with the peripheral end surfaces of the peripheral nozzle chamber 32, the central nozzle chamber 31, and the elongated channel 33.
  • the outer periphery of the central nozzle chamber 31 is further provided with an ignition device 314 and a flameout protection device 315. When it is detected that the combustion flame is extinguished, the flameout protection device 315 immediately disconnects the supply of the nozzle gas.
  • the secondary air II indicated by the double-line arrow flows from under the fire-breathing device 2, it directly supplies the inner ring 22 and the center ring 21; the single-line arrow indicates the primary air I from the fire.
  • the device flows in below, a portion is supplied to the peripheral nozzle 42 and another small portion is supplied to the center nozzle 41 through the elongated passage 33, thereby ensuring that the central nozzle 41 requires an effective supply of air once, and that the three peripheral nozzles 42 are required once again.
  • the effective supply of air does not interfere with each other; in particular, the space occupied by the primary air supply narrow passage 33 is small, and the structure ensures that the effective area of the secondary air inlet required for the inner ring 22 and the central ring is large.
  • the air intake device 4 includes a peripheral nozzle air supply pipe 43 and a central nozzle air supply pipe 44 which are independent of each other, so that the burner can be used simultaneously with three fires, or only
  • the peripheral nozzle air supply pipe 43 is in a "Y" shape, and the three tubular bodies 431 intersect and communicate with each other.
  • the central nozzle air supply pipe 44 has a "one" shape, which is The middle portions of the "Y"-shaped peripheral nozzle air supply pipes 43 intersect but are not in communication.
  • the peripheral nozzles 42 are disposed at three ends of the peripheral nozzle air supply pipe 43.
  • the center nozzle 41 is disposed at an inner end of the center nozzle air supply pipe 44, and the outer end of the center nozzle air supply pipe 44 is provided with a helium port 441, and the inner end is closed.
  • the working principle of the present invention is that the gas is injected from the central nozzle 41 into the central gas mixing pipe 241, and the primary air I from the narrow channel 33 is taken, and the mixed gas/air mixture flows into the center gas mixture.
  • the chamber 24 is ignited after flowing into the fire hole of the center ring 21; the gas emitted from the peripheral nozzle 42 and the primary air I entering the peripheral nozzle chamber 32 are mixed in the peripheral gas mixing tube 251, and the mixed gas/air mixture enters the periphery.
  • the gas mixing chamber 25 finally ignites after flowing into the fire holes in the inner ring 22 and the outer ring 23 respectively; after the secondary air II enters from the secondary air inlet 324, passes between the inner ring 22 and the center ring 21 After the groove 29, it is used for the combustion of the inner ring 22 and the center ring 21, respectively.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Description

一种燃气燃烧器 技术领域. - 本发明涉及一种灶具， 尤其涉及一种燃气燃烧器。
背景技术：
现有技术中， 中国专利 ZL03241583. 4公开了一种燃气燃烧器，. 其包括火 盖、 喷火装置、 底座和进气装置， 喷火装置上具有中心火圈、 内火圈和外火 圈； 其中， 中心火圈内形成了一中心燃气混合腔， 其内设有中心燃气混合管， 内火圈和外火圈之间则形成了两个对称分布的外围燃气混合腔， 每个外围燃 气混合腔均在一侧设有外围燃气混合管， 底座上除设有与中心燃气混合管对 应的一个中心喷嘴腔、 以及与外围燃气混合管对应的两个外围喷嘴腔外， 还 设有单独的中心一次空气通道， 进气装置上则设有与中心喷嘴腔对应的中心 喷嘴和与外围喷嘴腔对应的外围喷嘴。 该燃烧器的缺点是： 1、 由于只具有两 个外围燃气混合腔， 并且每个外围燃气混合腔内的外围燃气混合管是单边设 置的， 所以不但外围燃烧所需燃气的供给不够充分稳定， 而且还会使得混合 燃气在混合腔内流动不均，从而导致火焰极不均匀，很容易出现黄焰现象； 2、 中心一次空气通道单独设置， 不但使得结构变得复杂， 而且给加工也带来了 诸多不便， 同时， 由于该中心一次空气通道与两个外围喷嘴腔一起设置在底 座上， 从而使得二次空气入口面积变小， 导致中间火力不够。 - 发明内容：
本发明旨在克服上述现有技术之不足， 提供一种结构简单、 加工方便、 火焰均匀、 中间火力大以及控制巧妙的燃气燃烧器。
按照本发明提供的一种燃气燃烧器， 包括火盖、 喷火装置、 底座和进气 装置， 其中， 所述喷火装置上具有中心火圈、 内火圈、 外火圈， 所述中心火 圈内形成了一中心燃气混合腔， 所述的中心燃气混合腔内设有中心燃气混合 管； 所述内火圈和所述外火圈之间形成了至少三个均匀分布的外围燃气混合 腔， 每一个外围燃气混合腔的中部均设有外围燃气混合管， 所述的底座上设 有与所述中心燃气混合管对应的中心喷嘴腔、 以及与所述外围燃气混合管对 _
uuD / u u U y 5 9 应的外围喷嘴腔， 所述的进气装置上则设有与所述中心喷嘴腔对应的中心喷 嘴和与所述外围喷嘴腔对应的外围喷嘴。
其中所述的外围燃气混合腔、 外围喷嘴腔和外围喷嘴均为三个， 所述的 三个外围喷嘴腔中至少有一个与所述的中心喷嘴腔之间设有供一次空气流入 的狭长通道。
所述的三个外围喷嘴腔与所述的中心喷嘴腔之间也可均设有供一次空气 流入的狭长通道。
所述外火圈和中心火圈的截面均为圆形，所述内火圈的截面则为" Y"状， 所述的内火圈和所述的中心火圈之间成形有多个供二次空气流入的通槽， 所 述的各外围燃气混合腔之间由两条引火槽和一条隔离壁隔开。
所述的底座包括一圆盘， 所述的中心喷嘴腔成形在该圆盘的中部， 其截 面大体呈圆形， 顶端设有供所述中心燃气混合管伸入的开口， 底端设有供所 述中心喷嘴伸入的通孔； 所述的外围喷嘴腔则对称分布在所述圆盘的临近边 缘处， 其截面大体呈梯形， 顶端设有供所述外围燃气混合管伸入的开口， 底 端设有供所述外围喷嘴伸入的通孔。
所述外围喷嘴腔的外端设有供一次空气进入的缺口， 所述两相邻外围喷 嘴腔之间的空间形成了二次空气入口； 所述中心喷嘴腔顶端面的内侧沿周向 对称设有多段中心定位榫， 所述的外围喷嘴腔中至少有一个在外端设有一对 外定位榫， 所述喷火装置的下表面设有与所述中心定位榫和所述外定位榫相 配合的三根筋条， 且该三根筋条的底端面与所述外围喷嘴腔、 中心喷嘴腔和 狭长通道的顶端面相贴合。
所述的中心定位榫具有三段， 每一段均呈弧形； 所述中心喷嘴腔的外周 还设有点火装置和灭火保护装置。
所述的进气装置包括相互独立的一外围喷嘴供气管和一中心喷嘴供气 管； 所述的外围喷嘴供气管为 "Y"状， 其由三根管状体相交并相通而成， 所 述的中心喷嘴供气管则呈 "一"字状， 其与所述 "Y"状外围喷嘴供气管的中 部相交但不相通。 u / U y 所述的外围喷嘴均分布在所述外围喷嘴供气管的三个端部， 所述外围喷 嘴供气管的一端设有进气口， 另外两端由堵头封闭； 所述的中心喷嘴设于所 述中心喷嘴供气管的内端部， 所述中心喷嘴供气管的外端设有进气口， 内端 封闭。
所述的火盖包括中心火盖和外火盖， 所述的外火盖由外火盖装饰板和外 火盖压板组成。
按照本发明提供的一种燃气燃烧器， 相对现有技术具有如下优点： 首先， 本发明设计了三个均匀分布的外围燃气混合腔， 同时又将外围燃 气混合管设置在该混合腔的中部， 不但能使外围燃烧所需燃气的供给更加充 分稳定， 而且还使得混合燃气在混合腔内流动均匀， 避免了类似现有技术中 燃气混合腔中远离燃气混合管区域的燃气混合不均匀， 从而保证火焰均匀， 而不会象现有技术中那样出现黄焰现象。
其次，本发明巧妙地在外围喷嘴腔和中心喷嘴腔之间设置三条狭长通道， 用以代替现有技术中单独设置的中心一次空气通道， 不但结构简单、 加工方 便， 而且有利于加大二次空气的入口面积， 从而使得中间火力大。
最后， 本发明具有相互独立的外围喷嘴供气管和中心喷嘴供气管， 既可 实现燃烧器三圈火同时使用， 也可以仅为中心火单独使用， 因而更便于控制。
附图说明：
图 1为按照本发明提供的一种燃气燃烧器的分解示意图；
图 2为按照本发明提供的一种燃气燃烧器的示意俯视图；
图 3为图 2中沿 A-A方向的示意剖视图；
图 4为按照本发明提供的一种燃气燃烧器在将外围喷嘴供气管和中心喷 嘴供气管剖切后的示意仰视图；
图 5为本发明中所述底座的示意俯视图；
图 6为本发明中所述喷火装置的示意仰视图。
具体实施方式：
下面结合附图给出的实施例对本发明进行详细说明： 参见图 1至图 6， 按照本发明提供的一种燃气燃烧器， 包括火盖 1、 喷火装 置 2、 底座 3和进气装置 4; 所述的火盖 1包括中心火盖 11和外火盖， 所述的外 火盖由外火盖装饰板 12和外火盖压板 13组成，所述喷火装置 2上具有中心火圈 21、 内火圈 22、 外火圈 23， 其中， 所述内火圈 22位于所述中心火圈和外火圈 23之间， 所述中心火圈 21内形成了一中心燃气混合腔 24， 所述的中心燃气混 合腔 24内则设有中心燃气混合管 241 ;所述内火圈 22和所述外火圈 23之间形成 了至少三个均匀分布的外围燃气混合腔 25， 每一个外围燃气混合腔 25的中部 均设有一外围燃气混合管 251，从而不但能使外围燃烧所需燃气的供给更加充 分稳定， 而且还使得混合燃气在混合腔内流动均匀， 因而燃烧火焰均匀； 所 述的底座 3上设有与所述中心燃气混合管 241对应的中心喷嘴腔 31以及与所述 外围燃气混合管 251对应的外围喷嘴腔 32， 所述的进气装置 4上则设有与所述 中心喷嘴腔 31对应的中心喷嘴 41和与所述外围喷嘴腔 32对应的外围喷嘴 42。
如上所述， 作为本发明的优选实施方式， 所述的外围燃气混合腔 25、 外 围喷嘴腔 32和外围喷嘴 42均为三个； 所述的三个外围喷嘴腔 32与所述的中心 喷嘴腔 31之间都设有供一次空气流入的狭长通道 33， 用以代替现有技术中的 中心一次空气通道， 不但结构简单、 加工方便， 而且有利于加大二次空气的 入口面积， 使得内火圈 22和中心火圈 21燃烧所需二次空气充分、 稳定， 从而 使中间 （即内火圈 22和中心火圈 21 ) 火力大。
参见图 1， 所述外火圈 23和中心火圈 21的截面均为圆形， 所述内火圈 22 的截面则呈 "Y"状， 外形美观， 所述的内火圈 22和所述的中心火圈 21之间成 形有多个供二次空气流入的通槽 29， 所述的各外围燃气混合腔 25之间由两条 引火槽 26和一条隔离壁 27隔开， 引火槽的边以及隔离壁将各外围燃气混合腔 分隔成彼此独立的部分， 当然也可由一条引火槽和两条隔离壁隔开或三条引 火槽隔开。
参见图 1、 图 5和图 6， 所述的底座 3包括一圆盘 34, 所述的中心喷嘴腔 31 成形在该圆盘的中部， 其截面大体呈圆形， 顶端设有供所述中心燃气混合管 241伸入的幵口 311， 底端设有供所述中心喷嘴 41伸入的通孔 312; 所述的外围 喷嘴腔 32则对称分布在所述圆盘 34的临近边缘处， 其截面大体呈梯形， 顶端 u / υ u y 设有供所述外围燃气混合管 251伸入的开口 321， 底端设有供所述外围喷嘴 42 伸入的通孔 322。 所述外围喷嘴腔 32的外端设有供一次空气进入的缺口 323， 所述两相邻外围喷嘴腔之间的空间形成了二次空气入口 324;所述中心喷嘴腔 31顶端面的内侧沿周向对称设有三段弧形的中心定位榫 313，所述的外围喷嘴 腔 32中至少有一个在外端设有一对外定位榫 325， 所述喷火装置 2的下表面设 有与所述中心定位榫 313和所述外定位榫 325相配合的三根筋条 28， 且该三根 筋条的底端面与所述外围喷嘴腔 32、 中心喷嘴腔 31和狭长通道 33的顶端面相 贴合。 所述中心喷嘴腔 31的外周还设有点火装置 314和熄火保护装置 315， 当 检测到燃烧火焰熄灭时， 熄火保护装置 315立刻断开喷嘴燃气的供给。
如上所述， 参见图 3， 图中双线箭头表示的二次空气 II从喷火装置 2下面 流入时， 直接供给内火圈 22和中心火圈 21 ; 单线箭头表示的一次空气 I从喷 火装置下面流入时， 一部分供给外围喷嘴 42， 另一小部分通过狭长通道 33供 给中心喷嘴 41， 这样既保证了中心喷嘴 41所需一次空气有效供给， 又保证了 三个外围喷嘴 42所需的一次空气有效供给互不干扰； 尤其是一次空气供给狭 长通道 33所占空间小， 结构上保证了内火圈 22和中心火圈燃烧所需二次空气 入口有效面积大。
参见图 1、 图 3和图 4， 所述的进气装置 4包括相互独立的一外围喷嘴供气 管 43和一中心喷嘴供气管 44， 从而既可实现燃烧器三圈火同时使用， 也可以 仅为中心火单独使用； 所述的外围喷嘴供气管 43呈 " Y"状， 其由三根管状体 431相交并相通而成，所述的中心喷嘴供气管 44则呈"一"字状，其与所述" Y" 状外围喷嘴供气管 43的中部相交但不相通。 所述的外围喷嘴 42均布在所述外 围喷嘴供气管 43的三个端部， 所述外围喷嘴供气管 43的一端设有进气口 432， 另外两端由堵头 433封闭 （可以是螺纹连接或铆接、 焊接等） ； 所述的中心喷 嘴 41设于所述中心喷嘴供气管 44的内端部， 所述中心喷嘴供气管 44的外端设 有迸气口 441， 内端封闭。 当需要三圈火同时使用时， 进气口 432和进气口 441 分别进气， 当仅需要使用中心火时， 进气口 441单独进气即可。 ·
本发明的工作原理是：燃气从中心喷嘴 41射入中心燃气混合管 241，带入 来自狭长通道 33的一次空气 I，混合后的燃气 /空气混合物流入中心燃气混合
Figure imgf000008_0001
腔 24， 再流入中心火圈 21的火孔后点燃； 从外围喷嘴 42射出的燃气和进入外 围喷嘴腔 32的一次空气 I在外围燃气混合管 251中混合， 混合后的燃气 /空气 混合物进入外围燃气混合腔 25， 最后分别流入内火圈 22和外火圈 23中的火孔 后点燃； 二次空气 II从二次空气入口 324进入后， 经过内火圈 22和中心火圈 21 之间的通槽 29后， 分别用于内火圈 22和中心火圈 21的燃烧。
上述实施例仅供说明本发明之用， 而并非对本发明的限制， 有关技术领 域的普通技术人员， 在不脱离本发明的精神和范围的情况下， 还可以做出各 种变化和变型， 因此所有等同的技术方案也属于本发明的范畴， 本发明的专 利保护范围应由各权利要求限定。

Claims

WO 2006/114063 p T /ΓΜ n PCT/CN2006/000959. ^ 权 利 要 求 书
1、 一种燃气燃烧器， 包括火盖 （1) 、 喷火装置 （2) 、 底座 （3) 和进 气装置（4)，其中，所述喷火装置（2)上具有中心火圈 (21)、内火圈（22)、 外火圈 （23) ， 所述中心火圈 （21) 内形成了一中心燃气混合腔 （24) ， 所 述的中心燃气混合腔 （24) 内则设有中心燃气混合管 （241) ； 其特征在于： 所述内火圈 （22) 和所述外火圈 （23) 之间形成了至少三个均匀分布的外围 燃气混合腔 （25) ， 每一个外围燃气混合腔 （25) 的中部均设有外围燃气混 合管 （251) ， 所述的底座（3)上设有与所述中心燃气混合管 （241)对应的 中心喷嘴腔（31)、以及与所述外围燃气混合管（251)对应的外围喷嘴腔（32)， 所述的进气装置（4)上则设有与所述中心喷嘴腔（31)对应的中心喷嘴（41) 和与所述外围喷嘴腔 （32)对应的外围喷嘴 （42) 。
2、 根据权利要求 1所述的一种燃气燃烧器， 其特征在于： 所述的外围燃 气混合腔 （25) 、 外围喷嘴腔 （32) 和外围喷嘴 （42) 均为三个， 所述的三 个外围喷嘴腔 （32) 中至少有一个与所述的中心喷嘴腔 （31) 之间设有供一 次空气流入的狭长通道 （33) 。
3、 根据权利要求 2所述的一种燃气燃烧器， 其特征在于： 所述的三个外 围喷嘴腔 （32) 与所述的中心喷嘴腔 （31) 之间均设有供一次空气流入的狭 长通道 （33) 。
4、 根据权利要求 1或 2或 3所述的一种燃气燃烧器， 其特征在于： 所述外 火圈 （23) 和中心火圈 （21) 的截面均为圆形， 所述内火圈 (22) 的截面则 为 "Y"状， 所述的内火圈 （22)和所述的中心火圈 （21)之间成形有多个供 二次空气流入的通槽 （29) ， 所述的各外围燃气混合腔 （25) 之间由两条引 火槽 （26) 和一条隔离壁 （27) 隔开。
5、 根据权利要求 1或 2或 3所述的一种燃气燃烧器， 其特征在于： 所述的 底座（3)包括一圆盘（34)， 所述的中心喷嘴腔（31)成形在该圆盘的中部， 其截面大体呈圆形，顶端设有供所述中心燃气混合管 (241)伸入的开口（311)， 底端设有供所述中心喷嘴（41)伸入的通孔（312)； 所述的外围喷嘴腔（32) 则对称分布在所述圆盘 （34) 的临近边缘处， 其截面大体呈梯形， 顶端设有 供所述外围燃气混合管 （251) 伸入的开口 （321) ， 底端设有供所述外围喷 嘴 (42) 伸入的通孔 (322) 。 WO 2006/114063 -.„„ / , .( ^n rtPCT/CN2006/000959 Λ
PCT C 200b / U U 0 9 5 9
6、 根据权利要求 5所述的一种燃气燃烧器， 其特征在于： 所述外围喷嘴 腔（32) 的外端设有供一次空气进入的缺口 (323) ， 所述两相邻外围喷嘴腔 之间的空间形成了二次空气入口 （324) ； 所述中心喷嘴腔（31 )顶端面的内 侧沿周向对称设有多段中心定位榫（313) ， 所述的外围喷嘴腔（32) 中至少 有一个在外端设有一对外定位榫 （325) ， 所述喷火装置 （2) 的下表面设有 与所述中心定位榫（313)和所述外定位榫（325)相配合的三根筋条（28) ， 且该三根筋条的底端面与所述外围喷嘴腔 （32) 、 中心喷嘴腔 （31 ) 和狭长 通道 （33) 的顶端面相贴合。
7、 根据权利要求 6所述的一种燃气燃烧器， 其特征在于： 所述的中心 定位榫（313)具有三段， 每一段均呈弧形； 所述中心喷嘴腔（31 ) 的外周还 设有点火装置 （314) 和熄火保护装置 （315) 。
8、 根据权利要求 1或 2或 3所述的一种燃气燃烧器， 其特征在于： 所述的 进气装置（4)包括相互独立的一外围喷嘴供气管（43 )和一中心喷嘴供气管
(44) ； 所述的外围喷嘴供气管 (43) 呈 "Y"状， 其由三根管状体 （431 ) 相交并相通而成， 所述的中心喷嘴供气管 （44) 则呈 "一"字状， 其与所述 "Y"状外围喷嘴供气管 （43) 的中部相交但不相通。
9、 根据权利要求 8所述的一种燃气燃烧器， 其特征在于： 所述的外围喷 嘴 （42) 均布在所述外围喷嘴供气管 （43) 的三个端部， 所述外華喷嘴供气 管 （43 ) 的一端设有进气口 （432 ) ， 另外两端由堵头 （433) 封闭； 所述的 中心喷嘴 （41 ) 设于所述中心喷嘴供气管 （44) 的内端部， 所述中心喷嘴供 气管 （44) 的外端设有进气口 （441 ) ， 内端封闭。
10、 根据权利要求 1或 2或 3所述的一种燃气燃烧器， 其特征在于： 所 述的火盖 （1 )包括中心火盖 （11 )和外火盖， 所述的外火盖由外火盖装饰板
( 12) 和外火盖压板 ( 13) 组成。
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EP3339731A1 (en) * 2016-12-20 2018-06-27 Electrolux Appliances Aktiebolag Gas burner and hob comprising a gas burner
WO2018114169A1 (en) * 2016-12-20 2018-06-28 Electrolux Appliances Aktiebolag Gas burner and hob comprising a gas burner
CN109724082A (zh) * 2017-10-31 2019-05-07 宁波方太厨具有限公司 一种高效燃烧器
CN109724082B (zh) * 2017-10-31 2024-01-23 宁波方太厨具有限公司 一种高效燃烧器
CN109000246A (zh) * 2018-09-04 2018-12-14 佛山市顺德区美的洗涤电器制造有限公司 燃烧器及燃气灶具
WO2020047936A1 (zh) * 2018-09-04 2020-03-12 佛山市顺德区美的洗涤电器制造有限公司 燃烧器及燃气灶具
CN109000246B (zh) * 2018-09-04 2020-07-07 佛山市顺德区美的洗涤电器制造有限公司 燃烧器及燃气灶具

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