WO2019007231A1 - 燃烧器及热水器 - Google Patents

燃烧器及热水器 Download PDF

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Publication number
WO2019007231A1
WO2019007231A1 PCT/CN2018/092853 CN2018092853W WO2019007231A1 WO 2019007231 A1 WO2019007231 A1 WO 2019007231A1 CN 2018092853 W CN2018092853 W CN 2018092853W WO 2019007231 A1 WO2019007231 A1 WO 2019007231A1
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WO
WIPO (PCT)
Prior art keywords
angle
section
center line
mixing
burner
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PCT/CN2018/092853
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English (en)
French (fr)
Inventor
孟宪超
陈文风
梁国荣
Original Assignee
芜湖美的厨卫电器制造有限公司
美的集团股份有限公司
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Application filed by 芜湖美的厨卫电器制造有限公司, 美的集团股份有限公司 filed Critical 芜湖美的厨卫电器制造有限公司
Publication of WO2019007231A1 publication Critical patent/WO2019007231A1/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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes
    • F23D14/64—Mixing devices; Mixing tubes with injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means

Definitions

  • the present application relates to the field of burner technology, and in particular to a burner and a water heater using the same.
  • the shape and size of the burner have an important influence on the combustion efficiency of the burner.
  • the change of the fine size can also affect the overall performance of the burner.
  • the existing burners are usually high-pressure ejector burners, but the high-pressure ejector causes the flow resistance in the burner to be large, and the gas mixing efficiency is low.
  • the overall structure shape and size of the existing burners are suitable for high-pressure ejector. It is not suitable for improving the gas mixing efficiency in the burner.
  • the main object of the present application is to provide a burner and a water heater to which the burner is applied, with the aim of improving the gas mixing efficiency in the burner.
  • the burner proposed in the present application comprises a mixed flow passage, a connecting chamber and a mixing chamber which are sequentially penetrated, and the other end of the mixed flow passage is provided with an air inlet for gas passage, and the connecting chamber is curved.
  • the center line of the mixing channel is a first center line
  • the center line of the mixing chamber is a second center line
  • a cross section of the mixed flow path passing through the second center line and perpendicular to a plane of the first center line and the second center line is a first cross section
  • both sides of the first cross section are from the air inlet Expanding to the connecting cavity, the extension of the two sides of the first cross section forms an angle of the first angle, and the angle of the first angle is less than or equal to 3 degrees.
  • the angle of the first angle is 1.5 degrees.
  • a cross section of the mixed flow channel that coincides with a plane of the first center line and the second center line is a second cross section, and both sides of the second cross section expand from the air inlet to the connecting cavity And an angle formed by the extension line of the upper and lower sides of the second section is a second angle, and the angle of the second angle is 7 degrees to 10 degrees.
  • the angle of the second angle is 8.1 degrees.
  • an outermost line segment of the plane of the connecting cavity that coincides with the second section includes a first arc segment connected and a second arc segment, the first arc segment being adjacent to the mixing channel
  • the second arc segment is adjacent to the mixing chamber, and a radius of the first arc segment is greater than a radius of the second arc segment.
  • the radius of the first arc segment is greater than 19 mm.
  • the mixed flow channel has a length of 80 mm to 84 mm.
  • the mixing channel has a length of 82 mm.
  • the application also proposes a water heater comprising a nozzle and a burner as described above, the nozzle being directed to the inlet of the burner.
  • the distance between the nozzle and the air inlet is 10 mm.
  • the mixed flow channel is more favorable for the mixing of gas and air, and the gas resistance is reduced due to the expansion of the flow channel, the gas mixing efficiency in the mixed flow channel is improved, and the flow channel resistance in the mixed flow channel is reduced, Furthermore, it can be applied to low pressure injection and also increases the combustion performance of the burner.
  • FIG. 1 is a schematic structural view of an embodiment of a burner of the present application
  • Figure 2 is a cross-sectional view of the mixing flow path A-A of Figure 1.
  • first”, “second”, and the like in this application are used for descriptive purposes only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” and “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
  • fixed may be a fixed connection, or may be a detachable connection, or may be integrated; It may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship of two elements unless explicitly defined otherwise.
  • fix may be a fixed connection, or may be a detachable connection, or may be integrated; It may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship of two elements unless explicitly defined otherwise.
  • specific meanings of the above terms in the present application can be understood on a case-by-case basis.
  • the application proposes a burner.
  • the burner includes a mixing flow passage 10, a connecting chamber 30 and a mixing chamber 20 which are sequentially penetrated, and the other end of the mixing channel 10 is provided with a gas passage.
  • the connecting chamber 30 is curved and connects the mixing channel 10 and the mixing chamber 20, and the mixing channel 10 and the mixing chamber 20 are located on the same side of the connecting chamber 30, the mixing
  • the center line of the flow channel 10 is a first center line
  • the center line of the mixing chamber 20 is a second center line
  • the burner in the embodiment is a gas burner and is applied to a water heater.
  • the gas is injected into the mixing channel 10 from the air inlet through the nozzle. Since the gas velocity is high, the surrounding air is injected into the mixing channel 10, and the gas and air are realized in the mixing channel 10 and the mixing chamber 20. Mixing and diffusing.
  • the existing gas burners usually adopt a high-pressure injection form of more than 1250 Pa to improve the combustion performance; when the user uses the pipeline pressure of the gas pipeline, the pressure of the gas pipeline is usually less than 1000 Pa, and the user often fails to reach the maximum heat load.
  • the structure of the existing burners is designed for high-pressure injection. If the injection is less than 1000Pa, the hot smoke performance requirements of the water heater cannot be met, and the user experience is poor.
  • the burner is improved on the basis of the existing burner. It can be understood that the burner comprises a mixing channel 10 for the gas to circulate, a connecting chamber 30 and a mixing chamber 20, and the connecting chamber 30 of the mixing channel 10 connecting the mixing chamber 20 is a bent tube shape, in use,
  • the mixing chamber 20 is located above the mixing channel 10.
  • the mixing channel 10 has a first center line
  • the mixing chamber 20 has a second center line
  • the cross section of the mixing channel 10 passing the second center line and perpendicular to the plane of the first center line and the second center line is the first cross section
  • the two sides of the first cross section are expanded from the air inlet 11 to the connecting cavity 30, and the conventional burners are disposed in parallel at the two sides of the mixing channel at this viewing angle, and the technology adopted in this embodiment
  • the angle of the first angle a of expansion in the solution is less than or equal to 3 degrees, which increases the mixing volume of the mixing channel 10, so that the mixing channel 10 is more favorable for the mixing of gas and air, and due to the expansion of the channel,
  • the gas resistance is lowered, the gas mixing efficiency in the mixing channel 10 is improved, the flow path resistance in the mixing channel 10 is lowered, and the low-pressure injection is also applicable, and the combustion performance of the burner is also increased.
  • the angle of the first angle a is less than 3 degrees. It can be understood that the burner is usually installed in the water heater casing, and the size of the burner pipe has a certain limitation due to the limitation of the volume of the casing.
  • the first angle a formed by the extension of the two sides of the first cross section of the mixing channel 10 is less than 3 degrees, that is, the extension of the sides of the transverse section of the mixing channel 10
  • the first angle a of the line is less than 3 degrees, so that the mixing space of the mixing channel 10 is enlarged, and the mixing efficiency of the gas in the mixing channel 10 is improved.
  • the angle of the first angle a is 1.5 degrees.
  • Such an arrangement does not occupy too much installation space, and also causes the mixing flow passage 10 to slightly expand from the air inlet 11 to the connection chamber 30, increasing the mixing space of the mixing flow passage 10, and improving the mixed flow of gas and air.
  • the mixing efficiency in the channel 10 improves the combustion performance of the burner.
  • a cross section of the mixed flow channel 10 coincident with a plane of the first center line and the second center line is a second cross section, and both sides of the second cross section are connected to the connecting cavity from the air inlet 11 30 is expanded, and an angle formed by the extension line of the upper and lower sides of the second section is a second angle b, and the angle of the second angle b is 7 degrees to 10 degrees.
  • the first cross section is a horizontal cross section
  • the second cross section is a vertical cross section, that is, the extension lines of the two sides of the vertical cross section of the mixed flow channel 10 are non-parallel, such that The mixing space of the mixing flow path 10 is increased, and the mixing efficiency of the gas is further improved.
  • the angle of the second angle b is 8.1 degrees.
  • the outermost line segment of the plane of the connecting cavity 30 that coincides with the second section includes a first arc segment 31 and a second arc segment 32 that are connected, and the first arc segment 31 is close to The mixing channel 10, the second arc segment 32 is adjacent to the mixing chamber 20, and the radius of the first arc segment 31 is greater than the radius of the second arc segment 32. That is, the outermost line segment of the plane of the connecting cavity 30 that coincides with the second section is an irregular curved segment.
  • the first arc segment 31 is connected to the mixing channel 10 .
  • the projection surface of the second circular arc segment 32 is connected to the projection surface of the mixing chamber 20, and the radius of the first circular arc segment 31 is larger than the radius of the second circular arc segment 32.
  • the radius of the first arc segment 31 is greater than 19 mm.
  • the length of the mixing channel 10 is 80 mm to 84 mm. That is, the length L of the mixed flow path 10 from one end of the air inlet 11 to one end of the connection connection chamber 30 is 80 mm to 84 mm.
  • Such a length setting makes full use of the space inside the burner, and also makes the mixing path of the mixing channel 10 longer, so that the mixing of the gas in the mixing channel 10 is more sufficient and efficient.
  • the mixing channel 10 has a length of 82 mm. That is, the length L of the mixed flow path 10 from one end of the air inlet 11 to one end of the connection connection chamber 30 is 82 mm.
  • the application also proposes a water heater comprising a nozzle and a burner as described above, the nozzle being directed to the inlet 11 of the burner.
  • the specific structure of the burner is referred to the above embodiment. Since the water heater adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are not repeated herein.
  • the distance between the nozzle and the air inlet 11 is 10 mm.
  • Such an arrangement can increase the local velocity of the mixing channel, reduce the flow path resistance of the mixed flow channel to the gas, and improve the burner pair. Gas mixing efficiency.

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

Abstract

一种燃烧器和具有其的燃气热水器,该燃烧器包括依次贯通的混合流道(10)、连接腔(30)和混合腔(20)，混合流道(10)的另一端设有用以气体通入的进气口(11)，连接腔(30)呈弯曲状并连接混合流道(10)与混合腔(20)，且混合流道(10)与混合腔(20)位于连接腔(30)的同一侧，混合流道(10)的中心线为第一中心线，混合腔(20)的中心线为第二中心线，混合流道(10)的过第二中心线且垂直于第一中心线与第二中心线所在平面的截面为第一横截面，第一横截面的两侧边自进气口(11)处向连接腔(30)扩张，第一横截面的两侧边的延长线形成的夹角为第一夹角(a)，第一夹角(a)的角度小于或等于3度。该燃烧器提高了混合流道(10)内气体混合效率及燃烧器的燃烧性能。

Description

燃烧器及热水器
技术领域
本申请涉及燃烧器技术领域，尤其涉及一种燃烧器及应用该燃烧器的热水器。
背景技术
燃烧器作为热水器最为关键的部件之一，其结构形状及尺寸对燃烧器的燃烧效率有着重要影响，通常细微尺寸的改变也能影响燃烧器的整体性能。现有的燃烧器通常为高压引射燃烧器，但是高压引射使得燃烧器内流道阻力较大，气体混合效率较低，现有燃烧器的整体结构形状及尺寸均是适用于高压引射，不适于提高燃烧器内的气体混合效率。
申请内容
本申请的主要目的是提供一种燃烧器及应用该燃烧器的热水器，旨在提高燃烧器内的气体混合效率。
为实现上述目的，本申请提出的燃烧器包括依次贯通的混合流道、连接腔和混合腔，所述混合流道的另一端设有用以气体通入的进气口，所述连接腔呈弯曲状并连接所述混合流道与混合腔，且所述混合流道与混合腔位于连接腔的同一侧，所述混合流道的中心线为第一中心线，所述混合腔的中心线为第二中心线，混合流道的过第二中心线且垂直于第一中心线与第二中心线所在平面的截面为第一横截面，所述第一横截面的两侧边自进气口处向连接腔扩张，所述第一横截面的两侧边的延长线形成的夹角为第一夹角，所述第一夹角的角度小于或等于3度。
可选地，所述第一夹角的角度为1.5度。
可选地，所述混合流道的与所述第一中心线和第二中心线所在平面重合的截面为第二截面，所述第二截面的两侧边自进气口处向连接腔扩张，且所述第二截面的上下两侧边的延长线形成的夹角为第二夹角，所述第二夹角的角度为7度~10度。
可选地，所述第二夹角的角度为8.1度。
可选地，所述连接腔的与所述第二截面重合的平面的最外侧线段包括连接的第一圆弧段和第二圆弧段，所述第一圆弧段靠近所述混合流道，所述第二圆弧段靠近所述混合腔，所述第一圆弧段的半径大于所述第二圆弧段的半径。
可选地，所述第一圆弧段的半径大于19mm。
可选地，所述混合流道的长度为80mm~84mm。
可选地，所述混合流道的长度为82mm。
本申请还提出一种热水器，所述热水器包括喷嘴及如上所述的燃烧器，所述喷嘴正对所述燃烧器的进气口。
可选地，所述喷嘴与所述进气口之间的距离为10mm。
本申请采用的技术方案中，所述混合流道更有利于燃气与空气的混合，并且由于流道扩张，使得气体阻力降低，提高了混合流道内气体混合效率，降低混合流道内流道阻力，进而能适用于低压引射，也增大了燃烧器的燃烧性能。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本申请燃烧器一实施例的结构示意图；
图2为图1中混合流道A-A视角的剖视图。
附图标号说明：
标号 名称 标号 名称
10 混合流道 20 混合腔
30 连接腔 11 进气口
31 第一圆弧段 32 第二圆弧段
L 长度 a 第一夹角
b 第二夹角
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明，本申请实施例中所有方向性指示（诸如上、下、左、右、前、后……）仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，在本申请中如涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，术语“连接”、“固定”等应做广义理解，例如，“固定”可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
另外，本申请各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本申请要求的保护范围之内。
本申请提出一种燃烧器。
请参照图1至图2，在本申请一实施例中，该燃烧器包括依次贯通的混合流道10、连接腔30和混合腔20，所述混合流道10的另一端设有用以气体通入的进气口11，所述连接腔30呈弯曲状并连接所述混合流道10与混合腔20，且所述混合流道10与混合腔20位于连接腔30的同一侧，所述混合流道10的中心线为第一中心线，混合腔20的中心线为第二中心线，混合流道10的过第二中心线且垂直于第一中心线与第二中心线所在平面的截面为第一横截面，所述第一横截面的两侧边自进气口11处向连接腔30扩张，所述第一横截面的两侧边的延长线形成的夹角为第一夹角a，所述第一夹角a的角度小于或等于3度。
需要说明的是，本实施例中的所述燃烧器为燃气燃烧器，应用于热水器中。燃气通过喷嘴从进气口喷入混合流道10中，由于燃气速度较高，会引射周围空气一同进入混合流道10中，并在混合流道10与混合腔20中实现燃气与空气的混合及扩压。现有的燃气燃烧器通常采用大于1250Pa的高压引射形式，以提高燃烧性能；当在用户使用过程中，燃气管道的管道压力通常小于1000Pa，经常会出现用户使用无法达到最大热负荷的情况，而现有的燃烧器的结构尺寸皆是针对高压引射而设计，若采用小于1000Pa引射，无法满足热水器热烟气性能要求，用户体验度较差。
本实施例中，所述燃烧器在现有燃烧器的基础上进行了改进。可以理解地，所述燃烧器包括供气体流通的混合流道10、连接腔30及混合腔20，所述混合流道10的连接混合腔20的连接腔30为弯管形，在使用时，所述混合腔20位于混合流道10上方。混合流道10具有第一中心线，混合腔20具有第二中心线，混合流道10的过第二中心线且垂直于第一中心线与第二中心线所在平面的截面为第一横截面，且所述第一横截面的两侧边自进气口11处向连接腔30扩张，而传统的燃烧器此视角下其混合流道的两侧边为平行设置，本实施例采用的技术方案中扩张的第一夹角a的角度小于或等于3度，也就增大了混合流道10的混合体积，使得混合流道10更有利于燃气与空气的混合，并且由于流道扩张，使得气体阻力降低，提高了混合流道10内气体混合效率，降低混合流道10内流道阻力，进而能适用于低压引射，也增大了燃烧器的燃烧性能。
所述第一夹角a的角度小于3度。可以理解地，燃烧器通常安装于热水器壳体内，因壳体体积的限制，也就对燃烧器管道的尺寸有一定的限制。本实施例中，所述混合流道10的第一横截面的两侧边延长线形成的第一夹角a小于3度，也即所述混合流道10的横向截面的两侧边的延长线的第一夹角a小于3度，使得混合流道10的混合空间得到了扩大，提高了气体在混合流道10内的混合效率。
可选地，所述第一夹角a的角度为1.5度。这样的设置既不会占用太大的安装空间，也使得混合流道10自进气口11向连接腔30微微扩张，增大了混合流道10的混合空间，提高了燃气和空气在混合流道10内的混合效率，进而提高燃烧器的燃烧性能。
进一步地，所述混合流道10的与所述第一中心线和第二中心线所在平面重合的截面为第二截面，所述第二截面的两侧边自进气口11处向连接腔30扩张，且所述第二截面的上下两侧边的延长线形成的夹角为第二夹角b，所述第二夹角b的角度为7度~10度。本实施例中，所述第一横截面为水平截面，则所述第二截面为垂直截面，也就是说，所述混合流道10的垂直截面的两侧边的延长线非平行设置，这样使得混合流道10的混合空间得到了增大，进一步提高了气体的混合效率。
在本申请的一优选实施方案中，所述第二夹角b的角度为8.1度。
需要说明的是，所述连接腔30的与所述第二截面重合的平面的最外侧线段包括连接的第一圆弧段31和第二圆弧段32，所述第一圆弧段31靠近所述混合流道10，所述第二圆弧段32靠近所述混合腔20，所述第一圆弧段31的半径大于所述第二圆弧段32的半径。也就是说，所述连接腔30的与所述第二截面重合的平面的最外侧线段为不规则的曲线段，本实施例中，所述第一圆弧段31连接所述混合流道10的投影面，所述第二圆弧段32连接所述混合腔20的投影面，且所述第一圆弧段31的半径大于所述第二圆弧段32的半径。相比于现有的连接腔30为圆形的燃烧器，本实施例提供的技术方案使得连接腔30的体积更小，降低了燃烧器的整体阻力，进而提高引射效率。
在本申请的一优选实施方案中，所述第一圆弧段31的半径大于19mm。
进一步地，所述混合流道10的长度为80mm~84mm。也就是说，所述混合流道10的自进气口11一端至连接连接腔30的一端的长度L为80mm~84mm。这样的长度设置充分利用了燃烧器内的空间，也使得混合流道10的混合路径更长，使得气体在混合流道10内的混合更加充分和高效。
可选地，所述混合流道10的长度为82mm。也即，所述混合流道10的自进气口11一端至连接连接腔30的一端的长度L为82mm。
本申请还提出一种热水器，所述热水器包括喷嘴及如上所述的燃烧器，所述喷嘴正对所述燃烧器的进气口11。该燃烧器的具体结构参照上述实施例，由于本热水器采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。
本实施例中，所述喷嘴与所述进气口11之间的距离为10mm，这样的设置，能够增大混合流道局部速度，降低混合流道对燃气的流道阻力，提高燃烧器对气体的混合效率。
以上所述仅为本申请的优选实施例，并非因此限制本申请的专利范围，凡是在本申请的构思下，利用本申请说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本申请的专利保护范围内。

Claims (20)

  1. 一种燃烧器，其中，包括依次贯通的混合流道、连接腔和混合腔，所述混合流道的另一端设有用以气体通入的进气口，所述连接腔呈弯曲状并连接所述混合流道与混合腔，且所述混合流道与混合腔位于连接腔的同一侧，所述混合流道的中心线为第一中心线，所述混合腔的中心线为第二中心线，混合流道的过第二中心线且垂直于第一中心线与第二中心线所在平面的截面为第一横截面，所述第一横截面的两侧边自进气口处向连接腔扩张，所述第一横截面的两侧边的延长线形成的夹角为第一夹角，所述第一夹角的角度小于或等于3度。
  2. 如权利要求1所述的燃烧器，其中，所述第一夹角的角度为1.5度。
  3. 如权利要求1所述的燃烧器，其中，所述混合流道的与所述第一中心线和第二中心线所在平面重合的截面为第二截面，所述第二截面的两侧边自进气口处向连接腔扩张，且所述第二截面的上下两侧边的延长线形成的夹角为第二夹角，所述第二夹角的角度为7度~10度。
  4. 如权利要求3所述的燃烧器，其中，所述第二夹角的角度为8.1度。
  5. 如权利要求3所述的燃烧器，其中，所述连接腔的与所述第二截面重合的平面的最外侧线段包括连接的第一圆弧段和第二圆弧段，所述第一圆弧段靠近所述混合流道，所述第二圆弧段靠近所述混合腔，所述第一圆弧段的半径大于所述第二圆弧段的半径。
  6. 如权利要求5所述的燃烧器，其中，所述第一圆弧段的半径大于19mm。
  7. 如权利要求1所述的燃烧器，其中，所述混合流道的长度为80mm~84mm。
  8. 如权利要求7所述的燃烧器，其中，所述混合流道的长度为82mm。
  9. 如权利要求2所述的燃烧器，其中，所述混合流道的长度为80mm~84mm。
  10. 如权利要求3所述的燃烧器，其中，所述混合流道的长度为80mm~84mm。
  11. 一种热水器，其中，包括喷嘴及燃烧器，所述喷嘴正对所述燃烧器的进气口，所述燃烧器包括依次贯通的混合流道、连接腔和混合腔，所述混合流道的另一端设有用以气体通入的进气口，所述连接腔呈弯曲状并连接所述混合流道与混合腔，且所述混合流道与混合腔位于连接腔的同一侧，所述混合流道的中心线为第一中心线，所述混合腔的中心线为第二中心线，混合流道的过第二中心线且垂直于第一中心线与第二中心线所在平面的截面为第一横截面，所述第一横截面的两侧边自进气口处向连接腔扩张，所述第一横截面的两侧边的延长线形成的夹角为第一夹角，所述第一夹角的角度小于或等于3度。
  12. 如权利要求11所述的热水器，其中，所述喷嘴与所述进气口之间的距离为10mm。
  13. 如权利要求11所述的热水器，其中，所述第一夹角的角度为1.5度。
  14. 如权利要求11所述的热水器，其中，所述混合流道的与所述第一中心线和第二中心线所在平面重合的截面为第二截面，所述第二截面的两侧边自进气口处向连接腔扩张，且所述第二截面的上下两侧边的延长线形成的夹角为第二夹角，所述第二夹角的角度为7度~10度。
  15. 如权利要求14所述的热水器，其中，所述第二夹角的角度为8.1度。
  16. 如权利要求14所述的热水器，其中，所述连接腔的与所述第二截面重合的平面的最外侧线段包括连接的第一圆弧段和第二圆弧段，所述第一圆弧段靠近所述混合流道，所述第二圆弧段靠近所述混合腔，所述第一圆弧段的半径大于所述第二圆弧段的半径。
  17. 如权利要求16所述的热水器，其中，所述第一圆弧段的半径大于19mm。
  18. 如权利要求11所述的热水器，其中，所述混合流道的长度为80mm~84mm。
  19. 如权利要求18所述的热水器，其中，所述混合流道的长度为82mm。
  20. 如权利要求14所述的热水器，其中，所述混合流道的长度为80mm~84mm。
PCT/CN2018/092853 2017-07-03 2018-06-26 燃烧器及热水器 WO2019007231A1 (zh)

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