WO2009109103A1 - 可自动调节控气的燃气通用小型气体发动机气体混合器 - Google Patents

可自动调节控气的燃气通用小型气体发动机气体混合器 Download PDF

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Publication number
WO2009109103A1
WO2009109103A1 PCT/CN2009/000216 CN2009000216W WO2009109103A1 WO 2009109103 A1 WO2009109103 A1 WO 2009109103A1 CN 2009000216 W CN2009000216 W CN 2009000216W WO 2009109103 A1 WO2009109103 A1 WO 2009109103A1
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Prior art keywords
gas
passage
combustion
gas passage
auxiliary
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PCT/CN2009/000216
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English (en)
French (fr)
Inventor
杨华昌
吴昊
Original Assignee
Yang Huachang
Wu Hao
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 Yang Huachang, Wu Hao filed Critical Yang Huachang
Priority to US12/678,416 priority Critical patent/US20100192926A1/en
Publication of WO2009109103A1 publication Critical patent/WO2009109103A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M13/00—Arrangements of two or more separate carburettors; Carburettors using more than one fuel
    • F02M13/08—Carburettors adapted to use liquid and gaseous fuels, e.g. alternatively
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/04—Gas-air mixing apparatus
    • F02M21/047—Venturi mixer
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Definitions

  • Gas universal small gas engine gas mixer capable of automatically adjusting gas control
  • the utility model relates to a gas universal small gas engine gas mixer capable of automatically adjusting gas control, which can be used as a generator, a water pump, a lawn mower, a rotary tiller and the like for household, agricultural, industrial construction equipment and non-road vehicles. In terms of power, it belongs to the technical field of gas mixer gas automatic adjustment and gas control device. Background technique
  • the general small gas engine gas mixer consists of a casing, a choke, an air inlet, a gas passage, and a main quantity.
  • the purpose of the utility model is to invent a gas gas universal small gas engine gas mixture which can automatically adjust the gas control 3 ⁇ 4.
  • the technical proposal of the present invention is to provide a gas universal small gas engine gas mixer capable of automatically adjusting gas control, including a casing, a choke, an air inlet, a gas passage, a main orifice, and a gas.
  • the air outlet, the throttle, the passage, the auxiliary gas passage and the gas automatic regulating valve are composed, the air inlet is placed at the upper end of the air chamber of the casing, the choke is placed below the air inlet, and the gas passage is placed at the casing On one side of the middle of the cavity, the main orifice is placed at the front end of the gas passage, communicates with the casing air chamber, and the gas mixture outlet is placed at the lower end of the casing air chamber, The valve is placed above the gas mixture outlet.
  • an auxiliary gas passage is provided at the rear end of the throttle valve, and a passage is provided between the gas passage and the auxiliary gas passage, and the upper end of the passage communicates with the gas passage, and the lower end
  • the gas passage is connected to the auxiliary gas passage, and a gas automatic regulating valve is arranged at the interface between the passage and the auxiliary gas passage, wherein the throttle valve has a fork shape; the gas automatic regulating valve is circular and elliptical. Or square.
  • the utility model divides the gas passage into two gas passages, a main gas passage and an auxiliary gas passage.
  • the two gas passages merge into an air passage before the throat exit, and the main gas passage has a main orifice, and the auxiliary gas passage has gas assisted adjustment.
  • the measuring hole and a gas automatic regulating valve is an important component that is directly integrated with the throttle shaft on the gas mixer.
  • the gas automatic regulating valve also rotates together, thereby changing the channel cross-section size of the auxiliary gas passage, changing the amount of gas flowing in the auxiliary gas passage, thereby realizing the purpose of automatically adjusting the gas volume with the load of the engine.
  • the concentration of the combustible mixture of the general small gas engine can be optimized in all working conditions, and there are no gas engines such as speed fluctuation, starting difficulty, tempering at the mixer, exhaust pipe firing, and maximum power generation. These abnormalities.
  • the utility model has the advantages that the structure is simple and practical, and the gas automatic adjustment can be realized.
  • Figure 1 is a schematic view of the original throttle structure
  • FIG. 2 is a schematic view showing the structure of a gas universal small gas engine gas mixer capable of automatically adjusting the gas control
  • FIG. 3 is a schematic view showing the structure of the throttle valve of the present invention. detailed description
  • FIG. 2 it is a gas universal small gas engine gas mixer capable of automatically adjusting the gas control, and the universal small gas engine gas mixer capable of automatically adjusting the gas is provided by the casing 1, the choke valve 2, and the air inlet.
  • the gas port 3, the gas passage 4, the main quantity hole 5, the gas mixture gas outlet 6, the throttle valve 7, the passage 8, the auxiliary gas passage 9, and the gas automatic regulating valve 10 are composed.
  • the air inlet 3 is placed at the upper end of the air chamber of the casing 1, the choke 2 is placed below the air inlet 3, the gas passage 4 is placed at the side of the air chamber of the casing 1, and the main orifice 5 is placed in the gas.
  • the front end of the passage 4 communicates with the air chamber of the casing 1, the gas mixed gas outlet 6 is placed at the lower end of the air chamber of the casing 1, and the throttle valve 7 is placed above the gas mixed gas outlet 6, Below the gas passage 4, an auxiliary gas passage 9 is opened at the rear end of the throttle valve 7, and a gas assisting adjustment hole is provided at the upper end of the auxiliary gas passage 9, and a passage 8 is opened between the gas passage 4 and the auxiliary gas passage 9.
  • the upper end of the passage 8 communicates with the gas passage 4, the lower end communicates with the gas-assisted adjustment hole of the auxiliary gas passage 9, and a gas automatic regulating valve 10 is installed at the interface between the passage 8 and the auxiliary gas passage 9, the gas automatic regulating valve 10 and the section
  • the shaft of the valve 7 is integrated, and the shaft rotation of the throttle valve 7 can drive the gas automatic regulating valve 10 to rotate.
  • the throttle valve 7 has a fork shape below; according to different engine output characteristics, the gas is
  • the automatic regulating valve 10 is circular, elliptical or square.
  • the amount of gas entering the engine cylinder is the sum of the two gas volumes from the gas passage 4 and the auxiliary gas passage 9, and the engine is supplied with gas in any operating condition, and the amount of the gas is determined by the cross-sectional size of the main orifice 5. Decide.
  • the amount of gas in the auxiliary gas passage 9 is determined by the auxiliary adjustment amount hole and the gas automatic regulating valve 10.
  • the holes of different shapes can be selected, and the selection of the two hole shapes can meet different usage requirements, so the gas automatic regulating valve is Rotation can automatically adjust the amount of auxiliary gas.
  • the main working principle is as follows:
  • the opening of the throttle valve is small, and the gas automatic regulating valve partially opens the auxiliary gas passage, and the auxiliary gas passage is not opened much, so that a small amount of gas flows out.
  • the throttle opening becomes larger, and the automatic regulating valve will open the auxiliary gas passage, and the amount of gas flowing out of the auxiliary gas passage will also increase.
  • the throttle opening is the largest.
  • the gas automatic adjustment wide door fully opens the auxiliary gas passage.
  • the auxiliary gas passage is fully opened, and the amount of gas flowing out from the auxiliary gas passage is the largest.
  • the maximum auxiliary gas volume is determined by the gas assisted adjustment orifice.

Description

可自动调节控气的燃气通用小型气体发动机气体混合器 技术领域
本实用新型涉及一种可自动调节控气的燃气通用小型气体发动机气体混合器，可用 作发电机、 水泵、 割草机、 旋耕机等家用、 农用、 工业建筑设备、 非道路车辆用的动力 上， 属于气体混合器燃气自动调节控气装置技术领域。 背景技术
我国机械制造加工行业具有独特的优势，加入世界贸易组织为我国小型通用发动机 提供广阔的国际市场， 燃用天然气、 液化石油气、 或沼气等气体燃料， 额定功率在 19kW 以下的通用小型发动机发展迅速， 由于通用小型气体发动机的使用特点， 空气与燃气的 混合气装置几乎都采用的是气体混合器， 通用小型气体发动机气体混合器由壳体、 阻风 门、 空气进气口、 燃气通道、 主量孔、 燃气混合气出口、 节气门、 通道、 辅助燃气通道 和燃气自动调节阀组成， 如图 1、 2所示， 节气门 11下端为扇形， 加工角度很难保证， 若角度不保证， 燃气自动调节阀不可调节， 从空气进气口 3进入的空气和从燃气通道前 端主量孔出来燃气在喉管处相混合并开始形成可燃混合气。气体混合器特性随着发动机 负荷的变化而变化， 所配制的空气一燃气可燃混合气浓度也随之变化， 由于燃气进气不 可调节， 使得所配制的混合气并不能完全满足发动机所有工况的要求， 匹配不好的可燃 混合气使得发动机工作变得不正常， 所配制的混合气浓度通常较浓， 发动机的工作将会 出现不正常的现象， 如发动机起动困难， 空载及小负荷时发动机转速波动， 混合器处回 火， 排气管放炮等。 发明内容
本实用新型的目的是发明一种可自动调节控气的燃气通用小型气体发动机气体混 合 ¾。
为实现以上目的，本实用新型的技术方案是提供一种可自动调节控气的燃气通用小 型气体发动机气体混合器， 包括壳体、 阻风门、 空气进气口、 燃气通道、 主量孔、 燃气 混合气出口、 节气门、 通道、 辅助燃气通道和燃气自动调节阀组成， 空气进气口置于壳 体气腔的上端， 阻风门置于空气进气口的下方， 燃气通道置于壳体气腔中间的一侧， 主 量孔置于燃气通道的前端， 与壳体气腔相通， 燃气混合气出口置于壳体气腔的下端， 节 气门置于燃气混合气出口的上方， 在燃气通道的下方， 节气门的后端设有一个辅助燃气 通道， 在燃气通道和辅助燃气通道之间设有通道， 通道的上端与燃气通道相通， 下端与 辅助燃气通道相通， 在通道与辅助燃气通道的接口处设有一个燃气自动调节阀， 其特征 在于， 所述的节气门下方为叉形； 所述的燃气自动调节阀为圆形、 椭圆形或方形。
本实用新型将燃气道分成两个燃气道， 主燃气道和辅助燃气道， 两个燃气道在喉口 出口前汇合成一个气道， 主燃气道上有主量孔， 辅助燃气道上有燃气辅助调节量孔和一 个燃气自动调节阀门。这个燃气自动调节阀门是个重要部件， 它直接和气体混合器上节 气门轴做成一体。 当节气门转动时， 燃气自动调节阀也一起转动， 从而改变辅助燃气道 的通道截面大小， 改变辅助燃气道内流过的燃气量， 来实现燃气量随发动机的负荷自动 调节的目的，本实用新型可以使通用小型气体发动机的可燃混合气的浓度在所有工况得 到优化， 不会出现如转速波动、 起动困难、 混合器处回火、 排气管放炮、 发不出最大功 率等气体发动机常出现的这些不正常现象。
本实用新型的优点是结构简单、 实用， 能实现燃气自动调节。 附图说明
图 1为原节气门结构示意图；
图 2为一种可自动调节控气的燃气通用小型气体发动机气体混合器结构示意图； 图 3为本实用新型节气门结构示意图。 具体实施方式
以下结合附图和实施例对本实用新型作进一步说明。
实施例
如图 2所示， 为一种可自动调节控气的燃气通用小型气体发动机气体混合器， 所述 的可自动调节燃气的通用小型气体发动机气体混合器由壳体 1、阻风门 2、空气进气口 3、 燃气通道 4、 主量孔 5、 燃气混合气出口 6、 节气门 7、 通道 8、 辅助燃气通道 9、 燃气 自动调节阀 10组成。
空气进气口 3置于壳体 1气腔的上端， 阻风门 2置于空气进气口 3的下方， 燃气通 道 4置于壳体 1气腔中间的一侧，主量孔 5置于燃气通道 4的前端，与壳体 1气腔相通， 燃气混合气出口 6置于壳体 1气腔的下端， 节气门 7置于燃气混合气出口 6的上方， 在 燃气通道 4的下方， 节气门 7的后端开一个辅助燃气通道 9， 在辅助燃气通道 9上端设 有一个燃气辅助调节量孔， 在燃气通道 4和辅助燃气通道 9之间开一个通道 8， 通道 8 的上端与燃气通道 4相通， 下端与辅助燃气通道 9的燃气辅助调节量孔相通， 在通道 8 与辅助燃气通道 9的接口处安装一个燃气自动调节阀 10， 燃气自动调节阀 10与节气门 7的轴为一体，节气门 7的轴转动可带动燃气自动调节阀 10转动，如图 3所示，所述的 节气门 7下方为叉形； 按照不同发动机的输出特性， 所述的燃气自动调节阀 10为圆形、 椭圆形或方形。
进入到发动机气缸的燃气量是来自燃气通道 4和辅助燃气通道 9的两股燃气量之 和， 发动机在任何工况下， 燃气通道 4都供给燃气， 该燃气量由主量孔 5的截面大小决 定。 辅助燃气道 9的燃气量由辅助调节量孔和燃气自动调节阀 10决定， 可选配不同形 状的孔， 通过两个孔形状的选配， 来满足不同的使用要求， 所以燃气自动调节阀门的转 动可以自动调整辅助燃气量， 其主要工作原理如下：
1. 发动机在怠速工况时， 节气门的开度最小， 燃气自动调节阀门正好完全封闭辅 助燃气道， 辅助燃气道没有燃气流出。
2. 发动机小负荷时，节气门的开度较小， 燃气自动调节阀门部分开启辅助燃气道， 辅助燃气道开启不大， 从而少量的燃气流出。 随着负荷加大， 节气门开度变大， 自动调 节阀将开大辅助燃气道， 辅助燃气道流出的燃气量也将随之增加。
3. 发动机全负荷工况时， 节气门开度最大， 燃气自动调节阔门完全开启辅助燃气 道， 辅助燃气道全部打开， 从辅助燃气道流出的燃气量最大。最大辅助燃气量由燃气辅 助调节量孔决定。

Claims

权利要求-
1. 一种可自动调节控气的燃气通用小型气体发动机气体混合器， 包括壳体 （1 )、 阻风 门 （2)、 空气进气口 （3 )、 燃气通道 （4)、 主量孔 （5 )、 燃气混合气出口 （6)、 节 气门 （7)、 通道（8)、 辅助燃气通道（9)和燃气自动调节阀 （10)， 空气进气口 （3 ) 置于壳体（1 )气腔的上端， 阻风门（2)置于空气进气口 （3)的下方， 燃气通道（4) 置于壳体（1 )气腔中间的一侧， 主量孔（5 )置于燃气通道（4)的前端， 与壳体（1 ) 气腔相通， 燃气混合气出口 （6) 置于壳体 （1 ) 气腔的下端， 节气门 （7)置于燃气 混合气出口 （6) 的上方， 在燃气通道 （4) 的下方， 节气门 （7) 的后端设有一个辅 助燃气通道 （9)， 在燃气通道 （4) 和辅助燃气通道 （9) 之间设有通道 （8 )， 通道
( 8) 的上端与燃气通道 (4) 相通， 下端与辅助燃气通道 （9) 相通， 在通道 （8) 与辅助燃气通道 （9) 的接口处设有一个燃气自动调节阀 （10)， 其特征在于， 所述 的节气门 （7) 下方为叉形； 所述的燃气自动调节阀 （10) 为圆形、 椭圆形或方形。
2. 根据权利要求 1所述的可自动调节控气的燃气通用小型气体发动机气体混合器， 其 特征在于， 所述的燃气自动调节阀 （10) 与节气门 （7) 的轴为一体。
3. 根据权利要求 1 所述的可自动调节控气的燃气通用小型气体发动机气体混合器， 其 特征在于， 所述的辅助燃气通道 （9) 上设有一个燃气辅助调节量孔。
PCT/CN2009/000216 2008-03-06 2009-03-02 可自动调节控气的燃气通用小型气体发动机气体混合器 WO2009109103A1 (zh)

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Application Number Priority Date Filing Date Title
US12/678,416 US20100192926A1 (en) 2008-03-06 2009-03-02 Gas mixer of universal small combustion-gas engine for automatically controlling amount of combustion gas

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CNU2008200559716U CN201162589Y (zh) 2008-03-06 2008-03-06 可自动调节控气的燃气通用小型气体发动机气体混合器
CN200820055971.6 2008-03-06

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US8833347B2 (en) * 2008-03-06 2014-09-16 Huachang Yang Automatically regulated gaseous mixer for small universal gas engine
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