WO2019148640A1 - 开放式燃烧器及灶具 - Google Patents

开放式燃烧器及灶具 Download PDF

Info

Publication number
WO2019148640A1
WO2019148640A1 PCT/CN2018/081686 CN2018081686W WO2019148640A1 WO 2019148640 A1 WO2019148640 A1 WO 2019148640A1 CN 2018081686 W CN2018081686 W CN 2018081686W WO 2019148640 A1 WO2019148640 A1 WO 2019148640A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
open burner
positioning
ejector tube
cooktop
Prior art date
Application number
PCT/CN2018/081686
Other languages
English (en)
French (fr)
Inventor
王旺
李炳盛
Original Assignee
广东美的厨房电器制造有限公司
美的集团股份有限公司
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.)
Filing date
Publication date
Application filed by 广东美的厨房电器制造有限公司, 美的集团股份有限公司 filed Critical 广东美的厨房电器制造有限公司
Publication of WO2019148640A1 publication Critical patent/WO2019148640A1/zh

Links

Images

Classifications

    • 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
    • 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
    • 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
    • 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
    • F23D2900/14061—Special features of gas burners for cooking ranges having a coated burner cap

Definitions

  • the present invention relates to a burner, and in particular to an open burner and a cooktop having the same.
  • Burners used in existing cookers are roughly classified into two types: closed burners and open burners.
  • the typical structure of the enclosed burner is disclosed in the Chinese Utility Model Patent No. CN206875434U, which includes a bottom cup and a flamethrower fixedly connected to the bottom cup, the air from the upper edge of the bottom cup and the flamethrower.
  • the gap between the lower edges enters the inner space of the bottom cup and is mixed with the gas ejected in the nozzle.
  • the intake position of the enclosed burner and the close-closed structure of the bottom cup, so that the air that enters the bottom cup and is mixed with the gas is largely derived from the "secondary gas" around the burner that the oxygen has been consumed.
  • Part of the gas re-enters the bottom cup and mixes with the gas, which does not allow the gas to burn fully, and the cost of the burner is relatively high. Therefore, open burners have a good application prospect in some cases.
  • a typical structure of an open burner is disclosed in Chinese Utility Model Patent No. CN204285462U (hereinafter referred to as prior art 1), including a firearm and a positioning plate for fixing the position of the firearm, a positioning plate The other side is connected with a bracket on which a nozzle holder for fixing the nozzle is mounted, the nozzle sprays gas in the direction of the firearm, and is mixed with air in the vicinity of the bracket below the positioning plate to form a mixed gas. Since the position of the bracket is a relatively open space, the air mixed into the gas has a high oxygen content, which improves the combustion effect of the open burner.
  • the factors affecting the combustion effect are the relative positional relationship between the firearm and the nozzle.
  • the central axis of the two can be arranged in a line to obtain the best combustion effect. Therefore, the firearm and the firearm are Reliable circumferential positioning between the positioning plates is required to avoid poor combustion due to relative rotation between the two.
  • the positioning method adopted in the prior art 1 is that a pin body extending toward the positioning plate is disposed on the bottom surface of the firearm, and a pin hole is correspondingly disposed on the positioning plate, and is fixed by fitting of the pin body and the pin hole.
  • the pin body extends downward from the bottom surface of the firearm. When the firearm is rotated, the force of the pin body is similar to that of the cantilever beam.
  • the torque received by the pin body is the force of the rotating firearm multiplied by the pin body to the center of rotation of the flamethrower. distance.
  • the firearm itself In the open burner, the firearm itself is mostly die-casting, and the brittleness is large.
  • To ensure that the pin body is not broken during the process of rotating the firearm it is necessary to increase the diameter of the pin body to ensure the between the pin body and the bottom surface of the firearm.
  • the joint has sufficient strength, which inevitably leads to an increase in manufacturing costs.
  • the object of the present invention is to overcome the above problems in the prior art and to provide an open burner and a cooker which can improve the stress of the fixed structure of the flamethrower, thereby making the flamethrower smaller.
  • the volume can be reliably positioned, and the overall cost of the burner is not significantly increased.
  • an aspect of the present invention provides an open burner including a cooktop plate and nozzles and flame throwers respectively disposed on both sides of the cooktop, and the cooktop is formed with a through hole.
  • An ejector tube of the flamethrower extends through the through hole and extends toward the nozzle, and an outer side wall of the ejector tube extends radially outward to form a positioning protrusion, and a periphery of the through hole is formed with the The positioning projection cooperates to define a groove of the flamethrower in a circumferentially opposite position to the cooktop.
  • a direction of the flamethrower facing the cooktop plate is formed with a concave cavity extending from a bottom wall of the inner cavity toward the nozzle, the positioning protrusion along The extension direction of the ejector tube is as long as the ejector tube.
  • the positioning projection is integrally provided with the flamethrower, and the width of the positioning projection is gradually reduced in a direction toward the nozzle to form a draft angle.
  • the positioning protrusions respectively protrude correspondingly at the groove of the cooktop.
  • the positioning protrusions are provided in plurality, and a circumference of the through hole is formed with a groove corresponding to a plurality of the positioning protrusions.
  • the open burner further includes a nozzle holder mounted to the nozzle holder to be coupled such that the nozzle is spaced from the free end of the ejector tube and forms a gas mixing zone.
  • the distance between the free end of the ejector tube and the nozzle is 4 mm to 6 mm.
  • the nozzle holder is an integrally formed piece and includes a tube body having an intake port and an air outlet, and a connecting portion that fixes the tube body to the cooktop plate.
  • the connecting portion is provided in a U-shaped structure, and the air outlet extends from a bottom of the U-shaped structure to form the gas mixing region penetrating before and after the connecting portion.
  • the nozzle seat is provided with reinforcing ribs.
  • a second aspect of the invention provides a cooktop comprising the aforementioned open burner.
  • the positioning protrusions are arranged on the outer side wall of the ejector tube such that the positioning protrusions are disposed near the center of rotation of the flamethrower, so that the positioning protrusions are under the same condition of the same rotational force received by the flamethrower. Due to the proximity to the center of rotation of the flamethrower, the rotational moment experienced by the positioning projection is reduced, and the force is improved.
  • the positioning protrusions may be arranged according to the position of the ejector tube passing through the cooktop plate to further reduce the moment that the positioning protrusions are subjected to during the rotation of the flamethrower. Therefore, the positioning protrusion can satisfy the requirement of the positioning strength without excessively increasing the size, and the manufacturing cost of the open burner as a whole is controlled.
  • Figure 1 is a structural view of a preferred embodiment of an open burner
  • Figure 2 is an exploded structural view of the open burner of Figure 1;
  • Figure 3 is a first cross-sectional view of the open burner of Figure 1;
  • Figure 4 is a second cross-sectional view of the open burner of Figure 1.
  • 1-nozzle seat 10-air inlet; 11-outlet; 12-joint; 2-nozzle; 20-jet port; 3-sprayer; 30-fire tooth; 31-ejector tube; 33-inner chamber; 330-bottom wall; 4-cooking plate; 40-groove; 41-ignition pinhole; 42-fixing hole; 43-through hole; 5-fire cover; Area.
  • orientation words used such as “up, down, left, and right,” are generally used to refer to the direction of the open burner in normal use, or to the vertical. The positional relationship of each component in the straight, vertical or mid-cubic direction is described. "Inside and outside” means that the internal cavity of the component having the internal cavity is “inner” and the outside cavity is “outer”.
  • an open burner includes a cooktop plate 4, and the upper and lower sides of the cooktop plate 4 are respectively provided with a flamethrower 3 and a nozzle 2
  • an inner cavity 33 is formed, and the bottom wall 330 of the inner cavity 33 extends toward the nozzle 2 to form an ejector tube 31.
  • a through hole 43 is formed in the cooktop plate 3, and the ejector tube 31 extends through the through hole 43 toward the nozzle 2.
  • the outer side wall of the ejector tube 31 extends radially outward to form a positioning protrusion 32.
  • the peripheral edge of the through hole on the cooktop plate 4 is formed with a groove 40 matching the positioning protrusion 32, and the positioning protrusion 32 is The fitting of the groove 40 defines the circumferential position of the flamethrower 3 and the cooktop 4 to define the ejector tube 31 at a position where the central axis is collinear with the central axis of the nozzle 2 to ensure good combustion of the burner. effect.
  • the positioning projections 32 are arranged equidistantly with the ejector tube 31 along the direction of extension of the ejector tube 31, i.e. from the starting position of the extension of the ejector tube 31 on the bottom wall 330. Arranged along the entire length of the ejector tube 31. With this arrangement, it is possible to make the positioning projection 32 and the ejector tube 31 have a larger connection area in the longitudinal direction. Referring to FIG. 3, the force of the rotary flamethrower 3 is F, and the position of the insertion groove 40 of the positioning projection 32 from the rotation axis of the Lee ejector tube 31 is L, and the rotational moment of the positioning projection 32 is received.
  • the positioning protrusion 32 satisfies the requirements for circumferential positioning of the flamethrower 3 and the cooktop 4, and the radial dimension can be as small as possible, thereby reducing the size of the positioning projection 32 by the same force.
  • the rotational torque that it bears under the premise Especially in the real-time manner in which the positioning protrusion 32 and the ejector tube 31 are arranged in the same length as the extension direction of the ejector tube 31, the connection area of the positioning protrusion 32 and the ejector tube 31 is large, and the positioning protrusion 32 is subjected to external rotation. The ability to power is further increased.
  • the positioning protrusion 32 may protrude correspondingly only at the groove 40 on the cooktop plate 4, that is, along the extending direction of the ejector tube 31,
  • the length of the positioning projection 32 corresponds to the thickness of the cooktop panel 4, and is not arranged along the entire length of the ejector tube 31 as previously described. In this arrangement, the positioning projection 32 is smaller in volume, the material consumption for manufacturing the flamethrower 3 is less, and the overall manufacturing cost of the open burner is correspondingly reduced.
  • the "corresponding to the protrusion only at the groove 40" does not limit the length of the positioning protrusion 32 to be equal to the thickness of the cooktop panel 4, but should be understood as On the premise that the circumferential positioning of the flamethrower 3 and the cooktop 4 is satisfied, the positioning projections 32 are only partially disposed.
  • the number of the positioning protrusions 32 is not limited to only one shown in FIGS. 2 and 3.
  • a plurality of grooves may be disposed according to the strength of the positioning structure.
  • the periphery of the through hole 43 is formed with a groove 40 corresponding to the plurality of positioning protrusions 32, and the ejector tube 31 passes through the through hole.
  • each of the positioning projections 32 is fitted in one-to-one correspondence with the recesses 40 to form a multi-point distributed reliable circumferential limit structure between the flamethrower 3 and the cooktop panel 4.
  • the positioning protrusion 32 is integrally provided with the flamethrower 3, and may be, but not limited to, the existing integral die casting, and the width of the positioning protrusion 32 is gradually reduced in the direction toward the nozzle 2 to form a certain draft.
  • the slope shown in Figure 1 facilitates the demolding process of the flamethrower 3 during the integrated die casting process.
  • a nozzle holder 1 is further provided on the lower side of the cooktop plate 4, and the nozzle 2 is fixed to the cooktop plate 4 through the nozzle holder 1. Further, an injection port 20 is provided at the center of the nozzle 2, and the gas entering the open burner is ejected from the injection port 20 toward the flamethrower 3, and is ejected through the burner teeth 30 on the flamethrower 3.
  • the nozzle holder 1 is coupled to the cooktop plate 4 such that the ejection opening 20 on the nozzle 2 is spaced from the free end of the ejector tube 31 to form a gas mixing zone 6 between the nozzle 2 and the flamethrower 3.
  • the injection port 20 is in a relatively open space, and since the cooktop plate 4 separates the flamethrower 3 from the nozzle 2, the presence of the "secondary air" after combustion is less Below the platen 4, the gas flowing into the gas mixing zone 6 is better able to support gas combustion.
  • the interval between the free end of the ejector tube 31 and the nozzle 2 is set to be between 4 mm and 6 mm. If the interval is too small, the space of the gas mixing zone 6 is insufficient, which tends to cause insufficient mixing of the gas and the air, and combustion The effect is poor; when the interval exceeds 6 mm, the distance between the gas ejection position and the port of the ejector tube 31 is too large, and the mixed air may partially escape, resulting in waste of gas and flammable gas remaining in the air.
  • the nozzle holder 1 is an integrally formed member, and preferably adopts a die casting molding process, the nozzle holder 1 includes a tube body having an intake port 10 and an air outlet port 11, and the tube body is fixed to the lower side of the hob plate 4 Connection portion 12.
  • the gas is supplied from the air supply line into the air inlet 10, flows into the air outlet 11 in the tube body, and the nozzle 2 is mounted on the air outlet 11 to eject the gas.
  • the connecting portion 12 is preferably provided in a U-shaped structure, and the air outlet 11 projects from the bottom of the U-shaped structure toward the cooktop plate 4.
  • the gas mixing region 6 is located in a front-to-back region formed by the U-shaped structure, and the air The inflow is smoother and the mixing of gas and air is more complete.
  • a fixing hole 42 is formed in the cooktop plate 4, and a screw for fixing the nozzle holder 1 to the cooktop plate 4 is provided between the fixing hole 42 and the connecting portion 12.
  • the position of the nozzle 2 and the ejector tube 31 are prevented from changing due to the deformation of the nozzle holder 1, and the nozzle holder 1 is provided with reinforcing ribs (not shown), and the ribs are disposed.
  • the position is selected in accordance with the specific structure of the nozzle holder 1. For example, when the illustrated structure is used, a certain number of reinforcing ribs may be appropriately disposed at positions having corners in the structure to prevent deformation of the nozzle holder 1 during installation or use.
  • the minimum wall thickness of the nozzle holder 1 is not less than 4 mm, and the inner diameter of the tube body is set to 8 mm ⁇ 0.5 mm.
  • the wall thickness is set to be larger than 4 mm to increase the strength of the nozzle holder 1.
  • the existing gas-filled aluminum gas pipe is mostly 8 mm in diameter. Therefore, setting the inner diameter of the nozzle holder 1 to 8 mm ⁇ 0.5 mm is advantageous for improving the versatility of the burner.
  • the existing 4 mm inner diameter pipe body is difficult to meet the flow of natural gas, and therefore, increasing the pipe diameter can make the burner of the present invention suitable for liquefied gas. Also suitable for natural gas.
  • the inner diameter of the pipe body is set to a tolerance of 8 mm ⁇ 0.5 mm, which is set according to the aluminum gas pipe of the burner. When the tolerance of the aluminum gas pipe exceeds the range, the nozzle seat 1 The inner diameter of the tubular body also needs to be changed accordingly. Therefore, the inner diameter of the tubular body should be understood as the diameter of the tube adapted to the aluminum gas pipe, and not simply the parameter itself.
  • the present invention provides a cooktop which may be a gas cooker or an oven, and the burner in the gas cooker or the oven employs the above-described open burner.

Landscapes

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

Abstract

一种开放式燃烧器及灶具，燃烧器包括灶台板（4）以及分别设置于灶台板（4）两侧的喷嘴（2）和喷火器（3），灶台板（4）上形成有通孔（43），喷火器（3）的引射管（31）穿过通孔（43）并朝向喷嘴（2）延伸，引射管（31）的外侧壁径向向外延伸形成有定位凸起（32），通孔（43）的周缘形成有与定位凸起（32）配合以限定喷火器（3）与灶台板（4）的周向相对位置的凹槽（40）。该开放式燃烧器能够改善喷火器（3）的固定结构的受力情况，从而使喷火器（3）定位可靠并避免增加成本。

Description

开放式燃烧器及灶具 技术领域
本发明涉及一种燃烧器，具体地涉及一种开放式燃烧器及具有该燃烧器的灶具。
背景技术
现有灶具中使用的燃烧器，大致分为两类：封闭式燃烧器与开放式燃烧器。其中，封闭式燃烧器的典型结构如授权公告号为CN206875434U的中国实用新型专利中所公开的，包括底杯和固定连接于底杯上的喷火器，空气自底杯的上边缘与喷火器的下边缘之间的间隙进入底杯内部空间并与喷嘴内喷出的燃气混合。封闭式燃烧器的进气位置以及底杯的接近封闭的结构，使得进入底杯内与燃气混合的空气，很大程度来源于燃烧器周围的、氧气已经被消耗的“二次气体”，该部分气体重新进入底杯与燃气混合，并不能使燃气充分燃烧，且该类燃烧器的造价也相对高一些。因此，在一些场合下开放式燃烧器与之相比具有很好的应用前景。
开放式燃烧器的典型结构如授权公告号为CN204285462U的中国实用新型专利(以下称为现有技术1)中所公开的，包括分火器以及用于固定该分火器位置的定位板，定位板的另一侧连接有支架，该支架上安装有用于固定安装喷嘴的喷嘴座，喷嘴朝向分火器的方向喷出燃气，并在定位板下方的支架附近与空气混合，形成混合气体。由于支架所在的位置为较为开放的空间，因此，混入燃气内的空气含氧量较高，这使得开放式燃烧器的燃烧效果得到改善。
然而，在开放式燃烧器中，影响燃烧效果的因素还有分火器与喷嘴的相对位置关系，理想情况下，两者的中心轴线共线布置可以获得最佳的燃 烧效果，因此，分火器与定位板之间需要可靠的周向定位，以避免两者因发生相对转动而导致燃烧效果不佳。在现有技术1中所采用的定位方式是在分火器的底面上设置朝向定位板延伸的销体，并在定位板上对应设置销孔，通过销体与销孔的嵌合固定。然而，销体自分火器底面向下延伸，在转动分火器时销体的受力情况类似于悬臂梁结构，销体所承受的力矩为转动分火器的力乘以销体至喷火器回转中心的距离。在开放式燃烧器中，分火器本身多为压铸件，脆性较大，要保证转动分火器的过程中销体不被折断，需要增加销体的直径，以保证销体与分火器底面之间的连接处具有足够的强度，这势必导致制造成本的增加。
发明内容
本发明的目的是为了克服现有技术存在的上述问题，提供一种开放式燃烧器及灶具，该开放式燃烧器能够改善喷火器的固定结构的受力情况，从而使喷火器在较小的体积下就能够可靠定位，燃烧器整体成本不显著增加。
为了实现上述目的，本发明一方面提供一种开放式燃烧器，包括灶台板以及分别设置于所述灶台板两侧的喷嘴和喷火器，所述灶台板上形成有通孔，所述喷火器的引射管穿过所述通孔并朝向所述喷嘴延伸，所述引射管的外侧壁径向向外延伸形成有定位凸起，所述通孔的周缘形成有与所述定位凸起配合以限定所述喷火器与所述灶台板的周向相对位置的凹槽。
优选地，所述喷火器的朝向所述灶台板方向形成有内凹腔室，所述引射管自该内凹腔室的底壁朝向所述喷嘴的方向延伸，所述定位凸起沿所述引射管的延伸方向与所述引射管等长。
优选地，所述定位凸起与所述喷火器一体设置，并且，沿朝向所述喷嘴的方向，所述定位凸起的宽度逐渐减小以形成拔模斜度。
优选地，所述定位凸起仅在所述灶台板的所述凹槽处对应凸出。
优选地，所述定位凸起设置为多个，并且，所述通孔的周缘形成有与多个所述定位凸起一一对应的凹槽。
优选地，所述开放式燃烧器还包括喷嘴座，所述喷嘴安装至所述喷嘴座，以连接为使得所述喷嘴与所述引射管的自由端间隔并形成气体混合区。
优选地，所述引射管的自由端与所述喷嘴之间的间隔为4mm至6mm。
优选地，所述喷嘴座为一体成型件，并包括具有进气口和出气口的管体，以及将该管体固定至所述灶台板的连接部。
优选地，所述连接部设置为U型结构，所述出气口自所述U型结构的底部伸出以在所述连接部形成前后贯通的所述气体混合区。
优选地，所述喷嘴座上设置有加强肋。
本发明第二方面提供一种灶具，所述灶具包括前述的开放式燃烧器。
通过上述技术方案，将定位凸起布置与引射管的外侧壁上，使得定位凸起靠近喷火器的回转中心设置，这样，在喷火器受到的转动力的大小相同的条件下，定位凸起由于靠近喷火器的转动中心而使得定位凸起受到的转动力矩减小，受力情况改善。并且，定位凸起可以依据引射管穿过灶台板的位置布置，以进一步减小转动喷火器的过程中定位凸起所承受的力矩。因此，定位凸起不需要过分增大尺寸就可以满足定位强度的要求，开放式燃烧器整体的制造成本得到控制。
本发明的其他有益效果将在具体实施方式中予以进一步阐述。
附图说明
图1是开放式燃烧器的一种优选实施方式的结构视图；
图2是图1中的开放式燃烧器的爆炸结构视图；
图3是图1中的开放式燃烧器的第一剖面视图；
图4是图1中的开放式燃烧器的第二剖面视图。
附图标记说明
1-喷嘴座；10-进气口；11-出气口；12-连接部；2-喷嘴；20-喷射口；3-喷火器；30-火齿；31-引射管；32-定位凸起；33-内凹腔室；330-底壁；4-灶台板；40-凹槽；41-点火针孔；42-固定孔；43-通孔；5-火盖；6-气体混合区。
具体实施方式
在本发明中，在未作相反说明的情况下，使用的方位词如“上、下、左、右”通常是指针对开放式燃烧器的正常使用状态下的方向而言，或者是针对竖直、垂直或者中立方向上而言的各个部件相互位置关系描述用词。“内、外”是指具有内部空腔的零部件的内部空腔为“内”，内部空腔之外为“外”。
如图1至图4中所示，根据本发明一种优选实施方式的开放式燃烧器，包括灶台板4，该灶台板4的上、下两侧分别设置有喷火器3和喷嘴2，其中：喷火器3的朝向灶台板4的方向形成有内凹腔室33，该内凹腔室33的底壁330朝向喷嘴2的方向延伸形成有引射管31。灶台板3上形成有通孔43，引射管31穿过该通孔43朝向喷嘴2延伸。引射管31的外侧壁径向向外延伸形成有定位凸起32，灶台板4上的通孔的周缘上形成有与该定位凸起32配合的凹槽40，通过定位凸起32与凹槽40的嵌合，限定喷火器3与灶台板4的周向相对位置，以将引射管31限定于中心轴线与喷嘴2的中心轴线共线的位置，保证燃烧器具有良好的燃烧效果。
在一种优选的实施方式中，定位凸起32沿引射管31的延伸方向与引射管31等长布置，即，从引射管31在底壁330上的伸出的起始位置开始沿引射管31的全长布置。如此设置，能够使定位凸起32与引射管31在长度方向连接面积更大。参照图3中所示，转动喷火器3的力为F，定位凸起32的嵌入凹槽40的位置距离李引射管31的回转轴线的距离为L，则定位凸起32承受的转动力矩为F*L，定位凸起32在满足对喷火器3和灶台板4 的周向定位要求的前提下，径向尺寸可以尽量小，从而减小定位凸起32在受同等力的大小的前提下所承受的转动力矩。尤其是在定位凸起32与引射管31沿引射管31的延伸方向等长布置的实时方式中，定位凸起32与引射管31的连接面积较大，定位凸起32承受外部转动力的能力进一步增加。
在另一种优选实施方式中，在此虽然未图示，定位凸起32可以仅在灶台板4上的凹槽40所在处对应凸出，即，沿着引射管31的延伸方向，定位凸起32的长度对应于灶台板4的厚度布置，而不像前述的沿着引射管31的全长布置。在这种布置方式中，定位凸起32体积更小，制造喷火器3的材料消耗更少，开放式燃烧器的整体制造成本也相应有所下降。本领域技术人员应当理解的是，所述的“仅在凹槽40所在处对应凸起”并不是限定定位凸起32的长度与灶台板4的厚度相等，而应当将其理解为，在满足喷火器3与灶台板4的周向定位的前提下，定位凸起32仅在局部设置。
优选地，无论定位凸起32沿引射管31的全长布置，还是仅对应凹槽40所在处凸出，定位凸起32的数量都不仅局限于图2和图3中所示的一个，实际设计时，可以依据定位结构的强度需要设置多个，与之对应地，通孔43的周缘形成有与多个定位凸起32一一对应的凹槽40，引射管31穿过通孔43时，每个定位凸起32与凹槽40一一对应地嵌合，以形成喷火器3与灶台板4之间的多点分布式的可靠周向限位结构。
进一步地，定位凸起32与喷火器3一体设置，可以但不局限于现有的一体压铸成型，并且，沿朝向喷嘴2的方向，定位凸起32的宽度逐渐减小以形成一定的拔模斜度(如图1所示)，这种设置可以方便于喷火器3在采用一体压铸成型工艺时的脱模过程。
灶台板4的下侧还设置有喷嘴座1，喷嘴2通过喷嘴座1与灶台板4固定。并且，喷嘴2中心处设置有喷射口20，进入开放式燃烧器的燃气自该喷射口20朝向喷火器3的方向喷出，并经过喷火器3上的火齿30喷出。喷嘴座1与灶台板4连接，使得喷嘴2上的该喷射口20与引射管31的自 由端间隔，以在喷嘴2与喷火器3之间形成气体混合区6。如此设置，区别于封闭式燃烧器，喷射口20处于一个相对开放的空间，并且，由于灶台板4分隔喷火器3与喷嘴2，使得燃烧后的“二次空气”较少的存在与灶台板4下方，这样，流入气体混合区6内的气体能够较好的支持燃气燃烧。
作为优选地，引射管31的自由端与喷嘴2之间的间隔设置为4mm至6mm之间，如果间隔过小，则气体混合区6的空间不足，容易导致燃气与空气混合不充分，燃烧效果差；而当间隔超过6mm时，燃气喷出位置距离引射管31的端口距离过大，混合空气会有部分逸出，造成燃气浪费以及空气中存留可燃的燃气。
进一步地，喷嘴座1为一体成型件，并优选采用压铸成型工艺，该喷嘴座1包括具有进气口10和出气口11的管体，以及将该管体固定至灶台板4下侧的连接部12。燃气自供气管路流入进气口10，在管体内流动至出气口11，喷嘴2安装于该出气口11上，以将燃气喷出。连接部12优选设置为U型结构，出气口11自该U型结构的底部朝向灶台板4的方向伸出，前述的气体混合区6位于U型结构所形成的前后贯通的区域内，空气流入更加顺畅，燃气与空气的混合更加充分。灶台板4上形成有固定孔42，该固定孔42与连接部12之间穿设有固定喷嘴座1至灶台板4的螺钉。
为进一步提高喷嘴座1的强度，避免由于喷嘴座1变形导致喷嘴2与引射管31相对位置发生变化，喷嘴座1上设置有加强肋(图中未示出)，并且，加强肋的设置位置依据喷嘴座1的具体结构而选择。例如采用图示的结构时，结构上具有拐角的位置均可以适当设置一定数量的加强肋，以防止喷嘴座1在安装或使用过程中发生变形。
进一步地，喷嘴座1的最小壁厚不小于4mm，并且，管体的内径设置为8mm±0.5mm。在喷嘴座1采用一体压铸成型的优选实施方式中，将壁厚设置的大于4mm可以提高喷嘴座1的强度。而现有的燃气配合的铝气管多为8mm管径，因此，将喷嘴座1的内径设置为8mm±0.5mm，有利于提 高燃烧器的通用性。更为重要的是，当燃烧器内的可燃气体采用天然气时，现有的4mm内径管体难以满足天然气的流量的需要，因此，将管径增加可以使本发明的燃烧器既适用于液化气又适用于天然气。当然，本领域技术人员应当理解，管体的内径设置为8mm±0.5mm中的公差，是依据于燃烧器配合的铝气管而设置的，当铝气管的公差超出该范围时，喷嘴座1的管体的内径也需要相应变化，因此，管体的内径应当理解为与铝气管适配的管径，而并非单纯的参数限定本身。
此外，本发明还提供一种灶具，该灶具可以是燃气灶或烤箱，该燃气灶或烤箱中的燃烧器采用上述的开放式燃烧器。
以上结合附图详细描述了本发明的优选实施方式，但是，本发明并不限于此。在本发明的技术构思范围内，可以对本发明的技术方案进行多种简单变型，包括各个具体技术特征以任何合适的方式进行组合。为了避免不必要的重复，本发明对各种可能的组合方式不再另行说明。但这些简单变型和组合同样应当视为本发明所公开的内容，均属于本发明的保护范围。

Claims (11)

  1. 一种开放式燃烧器，包括灶台板(4)以及分别设置于所述灶台板(4)两侧的喷嘴(2)和喷火器(3)，其特征在于，所述灶台板(4)上形成有通孔(43)，所述喷火器(3)的引射管(31)穿过所述通孔(43)并朝向所述喷嘴(2)延伸，所述引射管(31)的外侧壁径向向外延伸形成有定位凸起(32)，所述通孔(43)的周缘形成有与所述定位凸起(32)配合以限定所述喷火器(3)与所述灶台板(4)的周向相对位置的凹槽(40)。
  2. 根据权利要求1所述的开放式燃烧器，其特征在于，所述喷火器(3)的朝向所述灶台板(4)方向形成有内凹腔室(33)，所述引射管(31)自该内凹腔室(33)的底壁(330)朝向所述喷嘴(2)的方向延伸，所述定位凸起(32)沿所述引射管(31)的延伸方向与所述引射管(31)等长。
  3. 根据权利要求2所述的开放式燃烧器，其特征在于，所述定位凸起(32)与所述喷火器(3)一体设置，并且，沿朝向所述喷嘴(2)的方向，所述定位凸起(32)的宽度逐渐减小以形成拔模斜度。
  4. 根据权利要求1所述的开放式燃烧器，其特征在于，所述定位凸起(32)仅在所述灶台板(4)的所述凹槽(40)处对应凸出。
  5. 根据权利要求1-4中任意一项所述的开放式燃烧器，其特征在于，所述定位凸起(32)设置为多个，并且，所述通孔(43)的周缘形成有与多个所述定位凸起(32)一一对应的凹槽(40)。
  6. 根据权利要求1-4中任意一项所述的开放式燃烧器，其特征在于，所述开放式燃烧器还包括喷嘴座(1)，所述喷嘴(2)安装至所述喷嘴座(1)， 以连接为使得所述喷嘴(2)与所述引射管(31)的自由端间隔并形成气体混合区(6)。
  7. 根据权利要求6所述的开放式燃烧器，其特征在于，所述引射管(31)的自由端与所述喷嘴(2)之间的间隔为4mm至6mm。
  8. 根据权利要求6所述的开放式燃烧器，其特征在于，所述喷嘴座(1)为一体成型件，并包括具有进气口(10)和出气口(11)的管体，以及将该管体固定至所述灶台板(4)的连接部(12)。
  9. 根据权利要求8所述的开放式燃烧器，其特征在于，所述连接部(12)设置为U型结构，所述出气口(11)自所述U型结构的底部伸出以在所述连接部(12)形成前后贯通的所述气体混合区(6)。
  10. 根据权利要求8所述的开放式燃烧器，其特征在于，所述喷嘴座(1)上设置有加强肋。
  11. 一种灶具，其特征在于，所述灶具包括权利要求1-10中任意一项所述的开放式燃烧器。
PCT/CN2018/081686 2018-02-02 2018-04-03 开放式燃烧器及灶具 WO2019148640A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810107726.3A CN108253461A (zh) 2018-02-02 2018-02-02 开放式燃烧器及灶具
CN201810107726.3 2018-02-02

Publications (1)

Publication Number Publication Date
WO2019148640A1 true WO2019148640A1 (zh) 2019-08-08

Family

ID=62743554

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/081686 WO2019148640A1 (zh) 2018-02-02 2018-04-03 开放式燃烧器及灶具

Country Status (2)

Country Link
CN (1) CN108253461A (zh)
WO (1) WO2019148640A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112797407A (zh) * 2021-02-01 2021-05-14 宁波方太厨具有限公司 引射单元及包含其的灶具燃烧器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110848685A (zh) * 2019-12-16 2020-02-28 中山市厨宝智能厨电有限公司 一种具有不锈钢炉头的燃烧器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1406043A1 (fr) * 2002-10-04 2004-04-07 Burner Systems International (BSI) Bruleur à gaz
WO2006077058A1 (en) * 2005-01-20 2006-07-27 Defendi Italy S.R.L. Gas burner, in particular for domestic cooking appliances
WO2017153928A1 (en) * 2016-03-10 2017-09-14 Defendi Italy S.R.L. Gas burner for caravans, boats and vehicles in general
US20170370594A1 (en) * 2016-06-27 2017-12-28 Whirlpool Corporation High efficiency high power inner flame burner
CN206875434U (zh) * 2017-02-14 2018-01-12 广东沙贝特燃气科技有限公司 一种杯体及烤箱或灶具用的杯式燃烧器
CN207797124U (zh) * 2018-02-02 2018-08-31 广东美的厨房电器制造有限公司 开放式燃烧器及灶具

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204285462U (zh) * 2014-10-30 2015-04-22 陈顺发 一种改进进气方式的燃气燃烧器
CN106642119A (zh) * 2017-02-14 2017-05-10 广东沙贝特燃气科技有限公司 一种杯体及杯式烤箱或灶具用的燃烧器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1406043A1 (fr) * 2002-10-04 2004-04-07 Burner Systems International (BSI) Bruleur à gaz
WO2006077058A1 (en) * 2005-01-20 2006-07-27 Defendi Italy S.R.L. Gas burner, in particular for domestic cooking appliances
WO2017153928A1 (en) * 2016-03-10 2017-09-14 Defendi Italy S.R.L. Gas burner for caravans, boats and vehicles in general
US20170370594A1 (en) * 2016-06-27 2017-12-28 Whirlpool Corporation High efficiency high power inner flame burner
CN206875434U (zh) * 2017-02-14 2018-01-12 广东沙贝特燃气科技有限公司 一种杯体及烤箱或灶具用的杯式燃烧器
CN207797124U (zh) * 2018-02-02 2018-08-31 广东美的厨房电器制造有限公司 开放式燃烧器及灶具

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112797407A (zh) * 2021-02-01 2021-05-14 宁波方太厨具有限公司 引射单元及包含其的灶具燃烧器
CN112797407B (zh) * 2021-02-01 2022-01-21 宁波方太厨具有限公司 引射单元及包含其的灶具燃烧器

Also Published As

Publication number Publication date
CN108253461A (zh) 2018-07-06

Similar Documents

Publication Publication Date Title
WO2016141643A1 (zh) 底杯盖及燃烧器及燃气用具
WO2019148640A1 (zh) 开放式燃烧器及灶具
WO2018166065A1 (zh) 分气结构、燃烧器和燃气灶具
CN109000230B (zh) 燃烧器
CN111649326A (zh) 燃烧器以及集成灶
CN106765093B (zh) 一种燃烧器
CN109595556A (zh) 一种灶具燃烧器
CN207797124U (zh) 开放式燃烧器及灶具
CN208124288U (zh) 一种单引射管单环火燃烧器
CN210267212U (zh) 一种双环火灶具燃烧器
CN113819462A (zh) 炉头、上进风燃烧器及燃气灶
CN111256127B (zh) 一种用于燃气灶的燃烧器
CN109737403B (zh) 一种悬浮式三腔铝炉头
CN212565762U (zh) 不锈钢火盖和分火器座的大功率灶具燃烧器
CN209840089U (zh) 一种燃气灶燃烧器
WO2019223402A1 (zh) 一种上进风灶具燃烧器
CN113237061A (zh) 火盖结构、应用其的分火器及炉头
CN111947149B (zh) 灶具燃烧器
CN208901386U (zh) 一种防回火铝炉头
CN111609401A (zh) 不锈钢火盖和分火器座的大功率灶具燃烧器
CN212929986U (zh) 一种燃气灶
CN220287518U (zh) 一种侧针炉头
CN216047656U (zh) 炉头、上进风燃烧器及燃气灶
CN212132429U (zh) 一种燃气炉头及灶具燃烧器
CN220249995U (zh) 喷嘴及包含其的喷嘴组件、燃气灶

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18903708

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 21/12/2020)

122 Ep: pct application non-entry in european phase

Ref document number: 18903708

Country of ref document: EP

Kind code of ref document: A1