WO2017032138A1 - 燃气具的燃烧加热闭环控制系统 - Google Patents

燃气具的燃烧加热闭环控制系统 Download PDF

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Publication number
WO2017032138A1
WO2017032138A1 PCT/CN2016/085541 CN2016085541W WO2017032138A1 WO 2017032138 A1 WO2017032138 A1 WO 2017032138A1 CN 2016085541 W CN2016085541 W CN 2016085541W WO 2017032138 A1 WO2017032138 A1 WO 2017032138A1
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gas
combustion
heat exchanger
inlet pipe
fan
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PCT/CN2016/085541
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English (en)
French (fr)
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黎素云
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黎素云
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Publication of WO2017032138A1 publication Critical patent/WO2017032138A1/zh

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    • 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
    • F24H9/20—Arrangement or mounting of control or safety devices
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/219—Temperature of the water after heating
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/305—Control of valves
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/345—Control of fans, e.g. on-off control
    • F24H15/35—Control of the speed of fans
    • 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
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/281—Input from user

Definitions

  • the utility model relates to a combustion device of a gas heater, in particular to a combustion heating closed-loop control system of a gas appliance.
  • the combustion control technology used in gas fireplaces and gas water heaters generally uses a constant fan speed.
  • the gas supply proportional valve adjusts the gas supply amount to realize the combustion of the flame on the surface of the burner, and the gas supply proportional valve is adjusted to realize the adjustment of the flame size for the purpose of controlling the water temperature.
  • the closed-loop control of the air-fuel ratio can not be achieved, and the closed-loop control of the combustion system can accurately control the air-fuel ratio, so that the combustion exhaust emissions and combustion efficiency are greatly improved.
  • the emission requirements for combustion appliances are getting higher and higher, and the closed-loop control technology of the combustion system can greatly improve the exhaust emission level of the combustion appliances.
  • the combustion is controlled within the theoretical air-fuel ratio.
  • the combustion efficiency and exhaust emissions of gas appliances are controllable.
  • the utility model provides a gas-fired combustion closed-loop control system with fast combustion heating, good water temperature control effect, uniform mixing of air and gas, and less exhaust gas emission.
  • a combustion heating closed-loop control system for a gas appliance includes a controller (1) and a combustion heat exchanger (2); the controller (1) is electrically connected to an oxygen sensor (11), a water temperature sensor (12), and a fan ( 13), a gas proportional valve (14), an ignition needle (15); the combustion heat exchanger (2) is connected to the inlet pipe (21) and the outlet pipe (22), and the water pipe (22) is provided with a water temperature sensor ( 12); an ignition pin (15) is fixedly mounted on the combustion heat exchanger (2); the combustion heat exchanger (2) is connected with an air inlet pipe (23), and the air inlet pipe section is installed with The fan (13) and the gas inlet pipe (24) are connected, and the gas inlet pipe (24) is provided with a gas proportional valve (14); the oxygen sensor (11) is installed in the combustion chamber of the combustion heat exchanger (2) .
  • the fan (13) is a speed control fan.
  • gas inlet pipe (24) may be arranged at the front end or the rear end of the fan.
  • the utility model adopts a closed-loop combustion method, detects the oxygen value of the exhaust gas emission through the oxygen sensor, judges whether the gas and the air are mixed and burned by the high and low signal level of the oxygen value, and burns in the theoretical air-fuel ratio, and the oxygen sensor feeds back the information to
  • the controller adjusts the speed of the fan and the proportion of the gas proportional valve to open, controls the optimal gas-air mixing ratio (air-fuel ratio), makes the gas combustion full, reduces carbon emissions and nitrogen oxide emissions, and saves gas. .
  • Figure 1 is a schematic view showing the structure of the product of the present invention.
  • a combustion closed-loop control system for a gas appliance includes a controller 1 and a combustion heat exchanger 2; the controller 1 is electrically connected to an oxygen sensor 11 and a water temperature sensor, respectively. 12.
  • the ignition pin 15 is fixedly mounted in the combustion chamber; the combustion heat exchanger 2 is connected with an air inlet pipe 23, and the fan 13 is connected to the air inlet pipe section and the gas inlet pipe 24 is connected, and the gas inlet pipe 24 is provided with gas.
  • the proportional valve 14; the oxygen sensor 11 is installed in the combustion chamber of the combustion heat exchanger 2.
  • the fan 13 is a speed control fan.
  • gas inlet pipe (24) may be arranged at the front end or the rear end of the fan.
  • the controller 1 controls the ignition pin 15 to ignite, and also controls the oxygen sensor 11, the water temperature sensor 12, the fan 13, and the gas proportional valve 14 to start, respectively, the oxygen sensor.
  • the oxygen sensor 11 Detecting the oxygen value contained in the exhaust gas emission, judging whether the gas and the air are combusted and combusted in the theoretical air-fuel ratio after the combustion of the oxygen value signal, the oxygen sensor 11 feeds back information to the controller 1, and the controller 1 adjusts the fan 13
  • the speed is controlled by increasing or decreasing the speed of the intake air to determine the optimal air-fuel ratio of the incoming oxygen and combustion, so that the gas combustion is sufficient and the discharge is minimum;
  • the water temperature sensor 12 detects the temperature required by the user to set, and passes the water temperature sensor 12 It is detected whether the temperature set by the user is reached, and the controller 1 controls the gas proportional valve 14 to open the proportional value by judging the level of the water temperature, and controls the size of the flame so that the water temperature reaches the required water temperature.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

一种燃气具的燃烧加热控制系统，包括控制器(1)及燃烧换热器(2)；控制器(1)分别电连接有氧传感器(11)、水温传感器(12)、风机(13)、燃气比例阀(14)、点火针(15)；燃烧换热器(2)上连接进水管(21)及出水管(22)，出水管(22)上安装水温传感器(12)；在燃烧换热器(2)上固定安装点火针(15)；燃烧换热器(2)连接有进风管(23)，在进风管段上安装有风机(13)及连接有燃气进气管(24)，燃气进气管(24)上安有燃气比例阀(14)；氧传感器(11)安装于燃烧换热器(2)的排烟口上。该燃气具的燃烧加热控制系统控制效果好，燃气与空气混合搭配均匀，使燃气充分燃烧，燃烧后的气体环保无污染。

Description

燃气具的燃烧加热闭环控制系统 【技术领域】
本实用新型涉及燃气加热器的燃烧装置，具体是燃气具的燃烧加热闭环控制系统。
【背景技术】
目前燃气壁挂炉和燃气热水器使用的燃烧控制技术普遍采用风机恒定转速。燃气供气比例阀调整供气量，实现火焰在燃烧器表面燃烧，供气比例阀调整实现火焰大小可调整，用以达到控制水温的目的。也有一些燃烧系统具有风机风量调整技术。但是都属于开环控制技术，不能精确控制空燃比，属于一种开放式大气燃烧系统。实现不了空燃比的闭环控制，而燃烧系统的闭环控制，可精确控制空燃比，使燃烧废气排放和燃烧效率都有较大提高。随着国家对大气环境的重视，对燃烧器具的排放要求越来越高，燃烧系统的闭环控制技术，可以极大的改善燃烧器具的废气排放水平。使燃烧控制在理论空燃比之内。对燃气具的燃烧效率和废气排放可控。
【实用新型内容】
为了解决上述原有的技术问题，本实用新型提供一种燃烧加热快、水温控制效果好、空气与燃气混合均匀、燃气充分燃烧废气排放少的燃气具燃烧加热闭环控制系统。
解决上述技术问题的方案为：
燃气具的燃烧加热闭环控制系统，包括控制器(1)及燃烧换热器(2)；所述的控制器(1)分别电连接有氧传感器(11)、水温传感器(12)、风机(13)、燃气比例阀(14)、点火针(15)；所述的燃烧换热器(2)上连接进水管(21)及出水管(22)，出水管(22)上安装水温传感器(12)；在所述的燃烧换热器(2)上固定安装点火针(15)；所述的燃烧换热器(2)连接有进风管(23)，在进风管段上安装有风机(13)及连接有燃气进气管(24)，燃气进气管(24)上安有燃气比例阀(14)；所述的氧传感器(11)安装于燃烧换热器(2)的燃烧室内。
进一步：所述的风机(13)为调速风机。
进一步：所述的燃气进气管(24)可布置在风机的前端或后端。
本实用新型的优点：
本实用新型采用闭环燃烧的方式，通过氧传感器检测尾气排放所含氧值，通过含氧值的信号高低判断燃气与空气混合燃烧后，是否在理论空燃比之内燃烧，氧传感器将信息反馈于控制器，由控制器调整风机的转速及燃气比例阀打开的比例，控制最佳燃气与空气混合比例混合(空燃比)，使燃气燃烧充分、减少碳排放和氮氧化物排放，节约燃气等优点。
【附图说明】
图1为本实用新型产品的结构示意图。
【具体实施方式】
如图1所示：燃气具的燃烧闭环控制系统，包括控制器1及燃烧换热器2；所述的控制器1分别电连接有氧传感器11、水温传感器 12、风机13、燃气比例阀14、点火针15；所述的燃烧换热器2上连接进水管21及出水管22，出水管22上安装水温传感器12；在所述的燃烧换热器2的燃烧室内固定安装点火针15；所述的燃烧换热器2连接有进风管23，在进风管段上安装有风机13及连接有燃气进气管24，燃气进气管24上安有燃气比例阀14；所述的氧传感器11安装于燃烧换热器2的燃烧室内。
进一步：所述的风机13为调速风机。
进一步：所述的燃气进气管(24)可布置在风机的前端或后端。
工作过程：
当系统工作时，水流从进水管21进入，由出水管22流出，控制器1控制点火针15点火，同时也分别控制氧传感器11、水温传感器12、风机13、燃气比例阀14启动，氧传感器11检测尾气排放所含氧值，通过含氧值信号的高低判断燃气与空气混合燃烧后是否在理论空燃比内燃烧，氧传感器11将信息反馈于控制器1，由控制器1调整风机13的转速，通过增加或降低转速对进风量的控制以确定所进的氧气与燃烧达到最佳空燃比，使燃气燃烧充分，排放最少；水温传感器12检测用户设定所需的温度，通过水温传感器12检测是否达到用户设定的温度，通过判断水温的高低反馈于控制器1，由控制器1控制燃气比例阀14打开比例值，控制火焰的大小，使水温达到用于所需的水温。

Claims (3)

  1. 燃气具的燃烧加热闭环控制系统，其特征在于：包括控制器(1)及燃烧换热器(2)；所述的控制器(1)分别电连接有氧传感器(11)、水温传感器(12)、风机(13)、燃气比例阀(14)、点火针(15)；所述的燃烧换热器(2)上连接进水管(21)及出水管(22)，出水管(22)上安装水温传感器(12)；在所述的燃烧换热器(2)上固定安装点火针(15)；所述的燃烧换热器(2)连接有进风管(23)，在进风管段上安装有风机(13)及连接有燃气进气管(24)，燃气进气管(24)上安有燃气比例阀(14)；所述的氧传感器(11)安装于燃烧换热器(2)的燃烧室内。
  2. 根据权利要求1所述的燃气具的燃烧加热闭环控制系统，其特征在于：所述的风机(13)为调速风机。
  3. 根据权利要求书1所述的燃气具燃烧加热闭环控制系统，其特征在于：所述的燃气进气管(24)可布置在风机的前端或后端。
PCT/CN2016/085541 2015-08-22 2016-06-13 燃气具的燃烧加热闭环控制系统 WO2017032138A1 (zh)

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Cited By (2)

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WO2019165528A1 (pt) * 2018-02-28 2019-09-06 Wermann Heitor Termocontrolador portátil para fabricação de cerveja
CN114992875A (zh) * 2021-09-29 2022-09-02 重庆海尔热水器有限公司 一种燃气热水器及其控制方法、装置和存储介质

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CN204880751U (zh) * 2015-08-22 2015-12-16 黎素云 燃气具的燃烧加热闭环控制系统
CN105042862A (zh) * 2015-08-22 2015-11-11 黎素云 燃气具的闭环燃烧加热控制方法及其控制系统
CN108240712A (zh) * 2016-12-27 2018-07-03 青岛经济技术开发区海尔热水器有限公司 一种燃气热水器的控制方法及燃气热水器
CN106679155A (zh) * 2017-02-07 2017-05-17 佛山市顺德区奇林电气有限公司 一种低炭节能高环保的燃气采暖热水炉

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Publication number Priority date Publication date Assignee Title
WO2019165528A1 (pt) * 2018-02-28 2019-09-06 Wermann Heitor Termocontrolador portátil para fabricação de cerveja
CN114992875A (zh) * 2021-09-29 2022-09-02 重庆海尔热水器有限公司 一种燃气热水器及其控制方法、装置和存储介质

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