WO2019233152A1 - 一种燃烧器火盖 - Google Patents

一种燃烧器火盖 Download PDF

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Publication number
WO2019233152A1
WO2019233152A1 PCT/CN2019/077985 CN2019077985W WO2019233152A1 WO 2019233152 A1 WO2019233152 A1 WO 2019233152A1 CN 2019077985 W CN2019077985 W CN 2019077985W WO 2019233152 A1 WO2019233152 A1 WO 2019233152A1
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WO
WIPO (PCT)
Prior art keywords
hole
fire
main
main fire
fire hole
Prior art date
Application number
PCT/CN2019/077985
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English (en)
French (fr)
Inventor
张波
刘晓刚
徐强
郑军妹
Original Assignee
宁波方太厨具有限公司
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.)
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Publication date
Application filed by 宁波方太厨具有限公司 filed Critical 宁波方太厨具有限公司
Priority to CA3101660A priority Critical patent/CA3101660C/en
Priority to AU2019281306A priority patent/AU2019281306B2/en
Priority to US17/250,105 priority patent/US11204172B2/en
Publication of WO2019233152A1 publication Critical patent/WO2019233152A1/zh

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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
    • 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
    • F23D14/26—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
    • 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
    • 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
    • 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
    • F23D14/76—Protecting flame and burner parts
    • 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
    • F23D2900/14003—Special features of gas burners with more than one nozzle
    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/08—Arrangement or mounting of burners
    • F24C3/085—Arrangement or mounting of burners on ranges
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the invention relates to a burner fire cover for a cooker, in particular to a fire cover with better flame stabilization effect.
  • the fire cover of a gas cooker is generally composed of a top wall, a ring-shaped inner wall and a ring-shaped outer wall.
  • the ring-shaped outer wall of the fire cover has a plurality of main fire holes along its circumferential direction.
  • the wall only includes a single row of fire holes.
  • the double rows of outer fire holes include a number of first
  • the outer fire holes are located in the second row of a plurality of second outer fire holes.
  • the first outer fire holes and the second outer fire holes are staggered. By setting two rows of outer fire holes on the outer side wall, the first outer fire holes and the second outer fire holes are arranged alternately.
  • the staggered arrangement of the outer fire holes effectively improves the combustion efficiency of the gas stove.
  • the second outer fire hole can also serve as a stable fire hole for the first outer fire hole and pull the first outer fire hole, thereby making the gas combustion more complete.
  • this kind of fire cover solves the situation of the flame stabilization of the first outer fire hole in the upper row, the second outer fire hole in the lower row is easy to leave the flame, which causes the entire burner to fail to burn normally.
  • the technical problem to be solved by the present invention is to provide a burner fire cover with good flame stabilizing effect of double-row fire holes in view of the current state of the prior art.
  • the burner fire cover includes a fire cover body having an annular peripheral wall, and is characterized in that a plurality of upper and lower layers are arranged on the annular peripheral wall of the fire cover body.
  • a plurality of main fire holes and a plurality of second main fire holes, each of the first main fire holes and each of the second main fire holes are spaced apart in a circumferential direction; and the annular peripheral wall is adjacent to the first main fire hole and the second main fire hole
  • a circle of grooves is provided between the holes in the circumferential direction, and a flame-stabilizing hole intersecting the groove is also provided in the annular peripheral wall, and the flame-stabilizing hole penetrates the groove and communicates with the first One main fire hole and / or a second main fire hole.
  • the flame holding hole communicates only with the first main fire hole and not with the second main fire hole, and the stable flame hole Flame holes and the second main fire holes are sequentially staggered.
  • the flame stabilizing hole is only connected to the first main fire hole and not to the second main fire hole.
  • the flame stabilization hole will form a circle of flame ring in the groove below the first main fire hole, and then play a role in flame stabilization for the second main fire hole in the lower row, making The flame stabilization effect of the second main fire hole is good.
  • the flame stabilization hole and the second main fire hole are sequentially staggered.
  • the flame stabilization hole is communicated from the inlet end communicating with the first main fire hole to the voltage stabilization tank.
  • the exit end of is inclined downward and approaches the second main fire hole gradually from the inside to the outside.
  • the angle ⁇ between the center line of the flame stabilizing hole and the center line of the first main fire hole is an acute angle.
  • a diameter of the fire cover body at a portion where the first main fire hole is located is larger than a diameter of a portion where the second main fire hole is located.
  • the part where the first main fire hole is located can be skillfully used as a waterproof eave above the second main fire hole.
  • a mixing chamber is formed between the inner surface of the top wall of the fire cover body and the annular peripheral wall, and an ignition chamber is provided on the inner wall of the annular peripheral wall and above the mixing chamber.
  • the inner wall of the ignition chamber is at least opened.
  • the annular peripheral wall of the fire cover body is also provided with an ignition hole, and the fire hole includes a first fire section and a second fire section which are sequentially arranged from the inside to the outside.
  • the longitudinal section of the first fire section is smaller than the longitudinal section of the second fire section.
  • the second firing section can form a voltage stabilization zone, which can ensure the steady flow of the ignition chamber, make the flame in the fire hole stable, and improve the ignition success rate.
  • the annular peripheral wall of the fire cover body is provided with an air outlet in fluid communication with the gas mixing chamber above the fire outlet, and the air outlet
  • the opening diameter of is larger than the opening diameter of the fire hole.
  • the outer edge of the top wall of the fire cover body is outwardly extended to block the air outlet, the fire hole and the first main fire. Holes and waterproof eaves above the second main fire hole.
  • the present invention has the advantages that: two rows of main fire holes, that is, a first main fire hole and a second main fire hole, are provided on the annular peripheral wall of the fire cover body, and is arranged between the two rows of main fire holes There is a voltage stabilizing section composed of a groove and a groove, which can stably hold the first main fire hole and the second main fire hole, and can significantly improve the combustion efficiency of the gas stove.
  • FIG. 1 is a schematic structural diagram of Embodiment 1 of the present invention.
  • Figure 2 is a sectional view of Figure 1;
  • Figure 3 is a bottom view of Figure 1;
  • Embodiment 2 of the present invention is a schematic structural diagram of Embodiment 2 of the present invention.
  • Figure 5 is a sectional view of Figure 4.
  • FIG. 6 is an enlarged view of the I-portion in FIG. 5.
  • FIG 1-3 shows the first embodiment of the burner fire cover of the present invention.
  • the burner fire cover includes a fired cover body 1 having an annular peripheral wall 10.
  • a plurality of main fire holes 11 and a plurality of second main fire holes 12 arranged in two layers are arranged on the peripheral surface of the annular peripheral wall 10, and each of the first main fire holes 11 is located in the same radial direction of the annular peripheral wall 10,
  • the two main fire holes 12 are also located in the same radial direction of the annular peripheral wall 10, and each of the first main fire holes 11 and each of the second main fire holes 12 communicate with the air mixing chamber 3 and are evenly spaced along the circumferential direction of the annular peripheral wall 10;
  • the peripheral surface of the annular peripheral wall 10 is located between the first main fire hole 11 and the second main fire hole 12, and a circle of grooves 2 is formed in the circumferential direction that does not penetrate the annular peripheral wall 10, that is, the grooves 2 are not mixed with each other.
  • Air cavity 3 communicates;
  • the annular peripheral wall 10 is further provided with a flame-stabilizing hole 21 which intersects the groove 2.
  • the flame-stabilizing hole 21 penetrates the groove 2 and communicates with the first main fire hole 11 and / or the second main fire hole 12.
  • the groove 2 is provided with a first main fire hole 11 for communication.
  • the flame holding hole 21 in the groove 2 can also directly communicate with the first main fire hole 11 and the second main fire hole 12 or directly communicate with the first main fire hole 11.
  • the second main fire hole 12 communicates.
  • the flame holding hole 21 communicates only with the first main fire hole 11 and not with the second main fire hole 12, and the flame holding hole 21 and The second main fire holes 12 are sequentially staggered.
  • the flame stabilizing hole 21 is only connected to the first main fire hole 11 and not to the second main fire hole 12. On the one hand, it can divert the gas flowing out of the first main fire hole 11, so that the gas of the first main fire hole 11 flows out. The speed is slowed down to make the combustion stable and difficult to leave the flame.
  • the flame stabilizing holes 21 and the second main fire hole 12 are staggered in order. Under the first main fire hole 11, a circle of flame will be connected in the groove 2. The ring further stabilizes the flame of the second main fire hole 12 in the lower row, so that the flame stabilization effect of the second main fire hole 12 is good.
  • the flame stabilization hole 21 is from the inlet end 211 communicating with the first main fire hole 11 to the outlet communicating with the groove 2
  • the end 212 is inclined downward and gradually approaches the second main fire hole 12 from the inside to the outside.
  • the angle ⁇ between the center line of the flame holding hole 21 and the center line of the first main fire hole 11 is an acute angle.
  • the diameter D1 of the portion of the fire cover body 1 where the first main fire hole 11 is located is larger than the diameter D2 of the portion where the second main fire hole 12 is located.
  • the waterproof eaves 131 above the second main fire hole 12 prevent the second main fire hole 12 from being blocked by the overflow.
  • an air mixing cavity 3 is formed between the inner surface of the top wall 13 of the fire cover body 1 and the inner wall of the annular peripheral wall 10.
  • An ignition is also provided on the inner wall of the annular peripheral wall 10 above the air mixing cavity 3.
  • the interior wall of the ignition chamber 4 is provided with at least one air inlet hole 41 communicating with the air-mixing chamber 3, and the annular peripheral wall 10 is provided with the ignition chamber in a radial direction at a position corresponding to the ignition chamber 4.
  • the annular peripheral wall 10 of the fire cover body 1 is also provided with an ignition hole.
  • the position of one of the first main fire holes 11 is used as the ignition hole. .
  • the firing hole 42 includes a first firing section 421 and a second firing section 422 arranged in order from the inside to the outside.
  • the longitudinal section of the first firing section 421 is smaller than the longitudinal section of the second firing section 422, and the second firing The segment 422 can form a voltage stabilization area, which can ensure the steady flow of the ignition chamber 4, make the flame of the fire hole 42 stable, and improve the ignition success rate.
  • the annular peripheral wall 10 of the fire cover body 1 is provided with an air outlet 101 in fluid communication with the gas mixing chamber 3 above the fire outlet 42.
  • the air outlet 101 The opening diameter of the opening is larger than the opening diameter of the fire hole 42.
  • the outer edge of the top wall 13 of the fire cover body 1 is extended outward to cover the air outlet 101, the fire hole 42, and the first main fire hole 11 and the second main fire hole 12. In this way, under the double-safety protection of the air outlet 101 and the waterproof eaves 131, even if the fire hole 42 is blocked by the overflow, the phenomenon of fire failure will not occur.
  • the structure of this embodiment is basically the same as that of Embodiment 1. The only difference is that the diameter D1 of the portion where the first main fire hole 11 is located is equal to the diameter D2 of the portion where the second main fire hole 12 is located.

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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)

Abstract

一种燃烧器火盖，包括具有环形周壁（10）的有火盖本体（1），环形周壁（10）的周面上设置有上下两层同一径向均匀间隔布置的多个主火孔（11）和多个第二主火孔（12），环形周壁（10）的周面位于第一主火孔（11）和第二主火孔（12）之间、周向地开设有未贯穿环形周壁（10）的一圈凹槽（2），在环形周壁（10）上还开设有与凹槽（2）相交的稳焰孔（21），该稳焰孔（21）贯通凹槽（2）并连通第一主火孔（11）和/或第二主火孔（12）。该燃烧器火盖能在稳焰住第一主火孔（11）和第二主火孔（12）的同时，显著提高燃气灶的燃烧效率。

Description

一种燃烧器火盖 技术领域
本发明涉及一种用于灶具的燃烧器火盖，尤其涉及一种具有较好稳焰效果的火盖。
背景技术
目前，燃气灶的火盖通常由顶壁、环形内侧壁和环形外侧壁构成，火盖的环形外侧壁上沿其圆周方向开有若干个主火孔，现有的燃气灶火盖的环形外侧壁上仅仅包括有单排火孔，这类的专利文献可以参考中国实用新型专利CN2842216Y(专利号为ZL200520014838.2)的《一种燃气灶燃烧器用锥形火火盖》，还可以参考中国实用新型专利CN202149492U(专利号为ZL201120246965.0)的《一种燃烧器火盖》。
上述公开的这种单主火孔燃烧方式，存在燃烧后火焰容易跳动，燃烧区域不稳定的不足，同时，单排火孔不仅使燃气灶的燃烧热效率低，而且使燃气燃烧不充分，导致一氧化碳气体的排放，加剧了环境污染。为避免这些缺陷，中国实用新型专利CN206191590U(专利号为ZL201621153770.0)《一种燃气灶火盖组件》就公开了一种燃气灶火盖组件，其包括基座、与基座适配的盖体，该盖体的内侧壁沿其周围方向的布置有若干内火孔，而盖体的外侧壁沿其圆周方向布设有双排外火孔，双排外火孔包括位于第一排的若干第一外火孔，位于第二排的若干第二外火孔，第一外火孔与第二外火孔交错设置，通过对外侧壁上设置双排外火孔，且第一外火孔与第二外火孔交错设置，有效提高了燃气灶的燃烧效率，该第二外火孔同时还能作为第一外火孔的稳火孔，拉住第一外火孔，从而使燃气燃烧更加充分。但这种火盖虽然解决了位于上排的第一外火孔的稳焰情况，但位于下排的第二外火孔则容易离焰，导致整个燃烧器不能正常燃烧。
发明内容
本发明所要解决的技术问题是针对上述现有技术现状而提供一种双排火孔稳焰效果好的燃烧器火盖。
本发明解决上述技术问题所采用的技术方案为：该燃烧器火盖，包括具有环形周壁的有火盖本体，其特征在于：所述火盖本体的环形周壁上设置有上下两层布置的多个主火孔和多个第二主火孔，各第一主火孔和各第二主火孔均沿周向间隔设置；并且，所述环形周壁于第一主火孔和第二主火孔之间、周向地开设有一圈凹槽，在所述的环形周壁内还开设有与所述凹槽相交的稳焰孔，该稳焰孔贯通所述的凹槽并连通所述的第一主火孔和/或第二主火孔。
为了防止第一主火孔由于气流过快而造成的离焰，优选地，所述稳焰孔只与所述第一主火孔相连通而不跟第二主火孔连通，并且所述稳焰孔与所述第二主火孔依次交错布置。稳焰孔只与第一主火孔相连通而不跟第二主火孔连通，一方面能分流从第一主火孔流出的燃气，使得第一主火孔的燃气流出速度减缓、使其燃烧稳定，不易离焰；另一方面稳焰孔在第一主火孔的下方于凹槽内会连成一圈的火焰环，进而对下排的第二主火孔起到稳焰作用，使得第二主火孔的稳焰效果好，为了更好地拉住第二主火孔，起到较好的稳焰效果，所述稳焰孔与所述第二主火孔依次交错布置。
同样地，为了更好地拉住第二主火孔，起到较好的稳焰效果，所述稳焰孔自与所述第一主火孔连通的进口端至与所述稳压槽连通的出口端为倾斜向下且逐步自内向外靠近所述第二主火孔。
为了更好地引从第一主火孔流出的燃气进入凹槽内，所述稳焰孔的中心线与所述第一主火孔的中心线的夹角α为锐角。
优选地，所述火盖本体于第一主火孔所在部分的直径大于第二主火孔所在部分的直径。这样，第一主火孔所在部分能巧妙地作为第二主火孔上方的防水檐。
进一步地，所述火盖本体的顶壁内表面与所述环形周壁之间形成混气腔，在环形周壁的内壁、位于混气腔的上方还设置有点火室，该点火室的内壁至少开有一个与混气腔相连通的进气孔，并且所述的环形周壁在对应该点火室的位置开设有与该点火室相贯通的出火孔。
为了防止点火室的燃气出气速度过快，造成离焰，所述火盖本体的环形周壁上还开设有点火孔，所述出火孔包括由内向外依次设置的第一出火段和第二出火段，所述第一出火段的纵截面小于第二出火段的纵截面。同时第二出火段能形成了一个稳压区，可保证点火室的稳流，使得出火孔的火焰平稳，提高了点火成功率。
为了进一步防止点火室的燃气出气速度过快，造成离焰，所述火盖本体的环形周壁于所述出火孔的上方开有与所述混气腔相流体连通的出气口，所述出气口的开口口径大于所述出火孔的开口口径。
为防止在出火孔被溢液堵塞的情况下，出现打不着火的现象产生，所述火盖本体的顶壁外缘向外延伸形成有遮挡在所述出气口、出火孔以及第一主火孔和第二主火孔上方的防水檐。
与现有技术相比，本发明的优点在于：在火盖本体的环形周壁上设置双排主火孔即第一主火孔和第二主火孔，并且在两排主火孔之间设置有由凹槽和凹槽构成的稳压部，在稳焰住第一主火孔和第二主火孔的同时，还能显著提高燃气灶的燃烧效率。
附图说明
图1为本发明实施例1的结构示意图；
图2为图1的剖视图；
图3为图1的仰视图；
图4为本发明实施例2的结构示意图；
图5为图4的剖视图；
图6为图5中I-部的放大图。
具体实施方式
以下结合附图实施例对本发明作进一步详细描述。
实施例1
如图1-3所示，为本发明燃烧器火盖的第一个实施例。该燃烧器火盖包括具有环形周壁10的有火盖本体1。
其中，环形周壁10的周面上设置有上下两层布置的多个主火孔11和多个第二主火孔12，各第一主火孔11位于环形周壁10的同一径向上，各第二主火孔12也位于环形周壁10的同一径向上，各第一主火孔11和各第二主火孔12均与混气腔3相通、并沿环形周壁10的周向均匀间隔分布；
同时，环形周壁10的周面位于第一主火孔11和第二主火孔12之间、周向地开设有未贯穿环形周壁10的一圈凹槽2，即，凹槽2不与混气腔3相通；
在环形周壁10上还开设有与凹槽2相交的稳焰孔21，该稳焰孔21贯通凹槽2并连通第一主火孔11和/或第二主火孔12。以凹槽2上开设有连通第一主火孔11为例进行展开，当然凹槽2上的稳焰孔21也能直接连通第一主火孔11和第二主火孔12或是直接与第二主火孔12连通。
为了防止第一主火孔11由于气流过快而造成的离焰，该稳焰孔21只与第一主火孔11相连通而不跟第二主火孔12连通，并且稳焰孔21与第二主火孔12依次交错布置。稳焰孔21只与第一主火孔11相连通而不跟第二主火孔12连通，一方面能分流从第一主火孔11流出的燃气，使得第一主火孔11的燃气流出速度减缓、使其燃烧稳定，不易离焰；另一方面稳焰孔21与第二主火孔12依次交错布置，在第一主火孔11的下方于凹槽2内会连成一圈的火焰环，进而对下排的第二主火孔12起到稳焰作用，使得第二主火孔12的稳焰效果好。
同样地，为了更好地拉住第二主火孔12，起到较好的稳焰效果，稳焰孔21自与第一主火孔11连通的进口端211至与凹槽2连通的出口端212为倾斜向下且逐步自内向外靠近第二主火孔12。而为了更好地引从第一主火孔11流出的燃气进入凹槽2内，稳焰孔21的中心线与第一主火孔11的中心线的夹角α为锐角。
如图3所示，火盖本体1还于第一主火孔11所在部分的直径D1大于第二主火孔12所在部分的直径D2，这样，第一主火孔11所在部分能巧妙地作为第二主火孔12上 方的防水檐131，防止第二主火孔12被溢液堵塞。
另外，为了提高点火成功率，火盖本体1的顶壁13内表面与环形周壁10的内壁之间形成混气腔3，在环形周壁10的内壁、位于混气腔3的上方还设置有点火室4，该点火室4的内壁上至少开有一个与混气腔3相连通的进气孔41，并且，环形周壁10内沿径向在对应该点火室4的位置开设有与该点火室4相贯通的出火孔42。
为了防止点火室4的燃气出气速度过快，造成离焰，火盖本体1的环形周壁10上还开设有点火孔，在本实施例中，其中一个第一主火孔11的位置作为点火孔。
在本实施例中，出火孔42包括由内向外依次设置的第一出火段421和第二出火段422，第一出火段421的纵截面小于第二出火段422的纵截面，同时第二出火段422能形成了一个稳压区，可保证点火室4的稳流，使得出火孔42的火焰平稳，提高了点火成功率。为了进一步防止点火室4的燃气出气速度过快，造成离焰，火盖本体1的环形周壁10于出火孔42的上方开有与混气腔3相流体连通的出气口101，该出气口101的开口口径大于出火孔42的开口口径，火盖本体1的顶壁13外缘向外延伸形成有遮挡在出气口101、出火孔42以及第一主火孔11和第二主火孔12上方的防水檐131，这样在出气口101以及防水檐131的双保险的作处下，即使在出火孔42被溢液堵塞的情况下也不会出现打不着火现象产生。
实施例2
如图4～6所示，为本发明燃烧器火盖的第二个实施例。本实施例与实施例1的结构基本相同，唯一的区别在于：第一主火孔11所在部分的直径D1等于第二主火孔12所在部分的直径D2。

Claims (9)

  1. 一种燃烧器火盖，包括具有环形周壁(10)的火盖本体(1)，其特征在于：所述火盖本体(1)的环形周壁(10)上设置有上下两层布置的多个主火孔(11)和多个第二主火孔(12)，各第一主火孔(11)和各第二主火孔(12)均沿周向间隔设置；
    并且，所述环形周壁(10)于第一主火孔(11)和第二主火孔(12)之间、周向地开设有一圈凹槽(2)，在所述的环形周壁(10)内还开设有与所述凹槽(2)相交的稳焰孔(21)，该稳焰孔(21)贯通所述的凹槽(2)并连通所述的第一主火孔(11)和/或第二主火孔(12)。
  2. 根据权利要求1所述的燃烧器火盖，其特征在于：所述稳焰孔(21)只与所述第一主火孔(11)相连通而不跟第二主火孔(12)连通，并且所述稳焰孔(21)与所述第二主火孔(12)依次交错布置。
  3. 根据权利要求2所述的燃烧器火盖，其特征在于：所述稳焰孔(21)自与所述第一主火孔(11)连通的进口端(211)至与所述凹槽(2)连通的出口端(212)为倾斜向下且逐步自内向外靠近所述第二主火孔(12)。
  4. 根据权利要求1～3任意一项权利要求中所述的燃烧器火盖，其特征在于：所述稳焰孔(21)的中心线与所述第一主火孔(11)的中心线的夹角(α)为锐角。
  5. 根据权利要求1～3任意一项权利要求中所述的燃烧器火盖，其特征在于：所述火盖本体(1)于第一主火孔(11)所在部分的直径D1大于第二主火孔(12)所在部分的直径D2。
  6. 根据权利要求1～3任意一项权利要求中所述的燃烧器火盖，其特征在于：所述火盖本体(1)的顶壁(13)内表面与所述环形周壁(10)之间形成混气腔(3)，在环形周壁(10)的内壁、位于混气腔(3)的上方还设置有点火室(4)，该点火室(4)的内壁至少开有一个与混气腔(3)相连通的进气孔(41)，并且所述的环形周壁(10)在对应该点火室(4)的位置开设有与该点火室(4)相贯通的出火孔(42)。
  7. 根据权利要求6所述的燃烧器火盖，其特征在于：所述火盖本体(1)的环形周壁(10)上还开设有点火孔，所述出火孔(42)包括由内向外依次设置的第一出火段(421)和第二出火段(422)，所述第一出火段(421)的纵截面小于第二出火段(422)的纵截面。
  8. 根据权利要求7所述的燃烧器火盖，其特征在于：所述火盖本体(1)的环形周壁(10)于所述出火孔(42)的上方开有与所述混气腔(3)相流体连通的出气口(101)，所述出气口(101)的开口口径大于所述出火孔(42)的开口口径。
  9. 根据权利要求7或8所述的燃烧器火盖，其特征在于：所述火盖本体(1)的顶壁(13)外缘向外延伸形成有遮挡在所述出气口(101)、出火孔(42)以及第一主火孔(11)和第二主火孔(12)上方的防水檐(131)。
PCT/CN2019/077985 2018-06-03 2019-03-13 一种燃烧器火盖 WO2019233152A1 (zh)

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