WO2018040166A1 - 一种自调节预混燃气加热系统及其控制方法 - Google Patents

一种自调节预混燃气加热系统及其控制方法 Download PDF

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WO2018040166A1
WO2018040166A1 PCT/CN2016/100525 CN2016100525W WO2018040166A1 WO 2018040166 A1 WO2018040166 A1 WO 2018040166A1 CN 2016100525 W CN2016100525 W CN 2016100525W WO 2018040166 A1 WO2018040166 A1 WO 2018040166A1
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fan
gas
main controller
proportional valve
pressure sensor
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PCT/CN2016/100525
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English (en)
French (fr)
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盛新东
李志华
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中山市卡洛力热能科技有限公司
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Publication of WO2018040166A1 publication Critical patent/WO2018040166A1/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
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/107—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using fluid fuel
    • 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
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/025—Regulating fuel supply conjointly with air supply using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N5/187—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using electrical or electromechanical 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
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel

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  • the invention relates to a self-regulating premixed gas heating system and a control method thereof.
  • FIG. 4 A is air.
  • the premixed gas heating system in Figure 4 is mainly composed of heat exchange combustion chamber 2, fan 3, pneumatic gas/air proportional valve.
  • the main controller 4 is composed.
  • the optimal working conditions in advance that is, the parameters such as the fan speed, the wind pressure, and the gas valve flow rate to meet the user's requirements.
  • changes in gas composition, gas pressure, and voltage can cause changes in the ignition success rate and combustion thermal efficiency of the equipment.
  • the adjusted fan speed, wind pressure, and gas valve flow cannot be changed with actual working conditions. auto-adjust.
  • the invention overcomes the deficiencies of the above technology and provides a self-adjusting premixed gas heating system.
  • the controller controls the fan speed and the flow rate of the gas flow by real-time control by detecting the output wind pressure of the fan, not only enabling the system to reach the heating power of the user. Requirements, and the combustion conditions can be automatically adjusted to the best condition.
  • a self-adjusting premixed gas heating system comprising: a casing, a heat exchange combustion chamber and a main controller are arranged in the casing, and a fan for controlling air and gas flow is connected to one end of the heat exchange combustion chamber
  • the fan is connected with a gas proportional valve for controlling the flow of the gas and a wind pressure sensor for detecting the output flow of the fan
  • the main controller is connected with the wind pressure sensor and controls the fan and the gas respectively through the information of the wind pressure sensor. The output of the proportional valve.
  • a wind pressure conducting pipe for controlling the differential pressure of the gas proportional valve is connected to the fan.
  • a self-regulating premixed gas heating system as described above characterized in that an air mixing pipe for mixing air and gas and supplying air to the heat exchange combustion chamber is connected between the heat exchange combustion chamber and the fan.
  • a self-adjusting premixed gas heating system control method the steps are as follows:
  • the main controller is fired by high-voltage ignition, and the main controller controls the opening degree of the fan and the gas proportional valve according to the heating or bath heating power set by the user, and adjusts the heating power of the flame;
  • the main controller adjusts the gas proportional valve and the fan until the user's hot water amount and the optimal combustion condition are satisfied.
  • the invention provides a wind pressure sensor for detecting the wind pressure on the fan, and the controller performs real-time control on the fan speed and the flow rate of the flow rate according to the feedback information of the wind pressure, so that the system can always automatically adjust to the most under the influence of the external environment. Good state.
  • Figure 1 is a schematic view 1 of the structure of the present invention.
  • Figure 2 is a schematic view 2 of the structure of the present invention.
  • Figure 3 is a schematic view 3 of the structure of the present invention.
  • FIG. 4 is a schematic structural view of a conventional self-regulating premixed gas heating system.
  • the heating system can only perform a complicated and comprehensive adjustment of the fan speed and the gas valve flow during production, so that the heating system can reach the optimal working condition required by the user.
  • changes in gas composition, gas pressure, temperature, and voltage can cause changes in the ignition success rate and combustion heat efficiency of the device.
  • the initial adjustment can not meet the changed actual situation and meet the user's best working conditions. That is, the existing premixed gas heating system shown in FIG. 4 is theoretically equivalent to open loop control, wherein A is air and B is gas.
  • a self-adjusting premixed gas heating system includes a casing 1 in which a heat exchange combustion chamber 2 and a main controller 4 are disposed, and one end of the heat exchange combustion chamber 2 is connected.
  • a fan 3 for controlling air and gas flow
  • the fan 3 is connected with a gas proportional valve 5 for controlling the flow of the gas
  • a wind pressure sensor 6 for detecting the output flow of the fan 3, the main controller 4 and the wind pressure sensor
  • the 6 phases are connected and the output of the fan 3 and the gas proportional valve 5 are respectively controlled by the detection information of the wind pressure sensor 6;
  • the heat exchange combustion chamber 2 and the fan 3 are connected with a mixture of air and gas for the heat exchange combustion chamber.
  • the air supply pipe 7; the air-mixing pipe 7 between the heat exchange combustion chamber 2 and the fan 3 is a mixture of air and gas, wherein A is air and B is gas.
  • the wind pressure sensor 6 is disposed on the main controller 4, and the wind pressure sensor 6 and the fan 3 on the main controller 4 and the gas proportional valve 5 and the fan 3 are respectively connected.
  • the wind pressure conducting tube 8 for controlling the pressure difference of the gas proportional valve 5.
  • the wind pressure sensor 6 transmits the detection information of the gas proportional valve 5 pressure difference through the wind pressure conduction tube 8 and detects the output flow rate of the fan 3, and transmits the detection information to the main controller 4, so that the main controller 4 passes the detection information of the wind pressure sensor 6. Control the fan separately 3.
  • a self-adjusting premixed gas heating system control method the steps are as follows:
  • the main controller 4 high-pressure ignition, the gas proportional valve 5 is opened, the main controller 4 controls the opening degree of the fan 3 and the gas proportional valve 5 according to the heating or bath heating power set by the user, and adjusts the heating power of the flame;
  • the main controller 4 When the main controller 4 detects that the water temperature does not reach the user setting value, the main controller 4 simultaneously adjusts the gas proportional valve 5 and the fan 3, and adjusts the flame heating power to increase the water temperature.
  • the gas proportional valve 5 and the fan 3 are automatically controlled so that the full preheating mixed gas heating system satisfies the user heating power water temperature requirement, and the gas combustion heat efficiency is optimal and the combustion condition is best.
  • the working principle is as follows: It is assumed that the heat exchange combustion chamber 2 conducts the combustion heat of the gas to the water flowing in the heat exchange combustion chamber 2, and the user sets the heating temperature through the main controller 4, and after starting the system, the main controller 4 controls the high-pressure ignition.
  • the gas proportional valve 5 and the fan 3 work simultaneously, the wind pressure sensor 6 detects the pressure at the output end of the fan 3, and feeds back the wind pressure information to the main controller 4, and the main controller 4 controls the fan 3 speed and the gas proportional valve according to the feedback information. 5 output gas flow rate, when the water temperature does not reach the user setting value, the main controller 4 adjusts the gas proportional valve 5 and the fan 3 speed, adjusts the flame heating power to increase the water temperature.
  • the wind pressure sensor 6 and the blower 3 and the gas proportional valve 5, under the command of the main controller 4, achieve the optimum values of the amount of hot water, heating power and combustion conditions required by the user.

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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)
  • Regulation And Control Of Combustion (AREA)

Abstract

一种自调节预混燃气加热系统，包括有外壳(1)，在外壳(1)内设有换热燃烧室(2)及主控制器(4)，该换热燃烧室(2)的一端连接有用于控制空气与燃气流量的风机(3)，该风机(3)连接有用于控制燃气流量的燃气比例阀(5)及用于检测风机(3)输出流量的风压传感器(6)，主控制器(4)与风压传感器(6)相连接并通过风压传感器(6)的检测信息来分别控制风机(3)、燃气比例阀(5)的输出。还提供了一种自调节预混燃气加热系统控制方法。

Description

一种自调节预混燃气加热系统及其控制方法 [技术领域]
本发明涉及一种自调节预混燃气加热系统及其控制方法。
[背景技术]
目前国内外绝大多数预混燃气加热系统如图4所示，其中A为空气，图4中预混燃气加热系统主要由换热燃烧室2、风机3、气动式燃气/空气比例阀5、主控制器4组成，加热系统生产时要预先调整好最佳工况即风机转速、风压、燃气阀流量等参数满足用户使用要求。但在实际工作中燃气成分、燃气压力、电压的变化都能使设备点火成功率、燃烧热效率等问题产生变化，显然开始时调整的风机转速、风压、燃气阀流量不能随实际工况的改变自动调整。
[发明内容]
本发明克服了上述技术的不足，提供了一种自调节预混燃气加热系统，控制器通过检测风机输出风压来对风机转速、流量阀燃气流量进行实时控制，不仅使系统达到用户的加热功率要求，而且燃烧工况能自动调整到最佳状态。
为实现上述目的，本发明采用了下列技术方案：
一种自调节预混燃气加热系统，其特征在于：包括有外壳，在外壳内设有换热燃烧室及主控制器，所述换热燃烧室的一端连接有用于控制空气与燃气流量的风机，所述风机连接有用于控制燃气流量的燃气比例阀及用于检测风机输出流量的风压传感器，所述主控制器与风压传感器相连接并通过风压传感器的信息来分别控制风机、燃气比例阀的输出。
如上所述所述的一种自调节预混燃气加热系统，其特征在于：所述风压传感器设置在主控制器上，所述主控制器上的风压传感器与风机之间及燃气比例阀与风机之间分别连接有用于控制燃气比例阀压差的风压传导管。
如上所述的一种自调节预混燃气加热系统，其特征在于：所述换热燃烧室与风机之间连接有用于混合空气与燃气并为换热燃烧室供气的混气管。
一种自调节预混燃气加热系统控制方法，其步骤如下：
a、通过主控制器设置供暖或洗浴加热功率，并启动系统工作；
b、风机、风压传感器、燃气比例阀开始工作；
c、主控制器高压点火检火，主控制器根据用户设置的供暖或洗浴加热功率，控制风机和燃气比例阀开度,调整火焰的加热功率；
d、当主控制器检测水温达不到用户设置值时，主控制器调整燃气比例阀和风机，直到满足用户热水量和最佳燃烧工况。
本发明的有益效果是：
本发明通过在风机上设置检测风压的风压传感器，控制器根据风压的反馈信息来对风机转速、流量阀燃气流量进行实时控制，使系统在外界环境影响下仍能始终自动调节到最佳状态。
[附图说明]
图1为本发明结构示意图1；
图2为本发明结构示意图2；
图3为本发明结构示意图3；
图4为现有自调节预混燃气加热系统结构示意图。
[具体实施方式]
下面结合附图与本发明的实施方式作进一步详细的描述：
如图4所示，现有预混燃气加热系统，加热系统只能在生产时对风机转速和燃气阀流量进行一次较复杂的综合调整，，使加热系统达到用户要求的最佳工况。但该系统在实际运行中燃气成分、燃气压力、温度、电压的变化都能使设备点火成功率、燃烧热效率等问题产生变化。显然初期的调整不能满足变化了的实际状况，达到用户最佳工况要求。即图4所示现有预混燃气加热系统在控制理论上相当于开环控制，其中A为空气，B为燃气。
如图1-3所示：一种自调节预混燃气加热系统，包括有外壳1，在外壳1内设有换热燃烧室2及主控制器4，所述换热燃烧室2的一端连接有用于控制空气与燃气流量的风机3，所述风机3连接有用于控制燃气流量的燃气比例阀5及用于检测风机3输出流量的风压传感器6，所述主控制器4与风压传感器6相连接并通过风压传感器6的检测信息来分别控制风机3、燃气比例阀5的输出；所述换热燃烧室2与风机3之间连接有用于混合空气与燃气并为换热燃烧室2供气的混气管7；所述换热燃烧室2与风机3之间混气管7内为空气与燃气混和气，其中A为空气，B为燃气。
如图3所示:所述风压传感器6设置在主控制器4上，所述主控制器4上的风压传感器6与风机3之间及燃气比例阀5与风机3之间分别连接有用于控制燃气比例阀5压差的风压传导管8。风压传感器6通过风压传导管8来控制燃气比例阀5压差并检测出风机3输出流量的检测信息传输给主控制器4，从而使得主控制器4通过风压传感器6的检测信息来分别控制风机 3、燃气比例阀5的输出。
一种自调节预混燃气加热系统控制方法，其步骤如下：
a、通过主控制器4设置供暖或洗浴加热功率，并启动系统工作；
b、风机3、风压传感器6开始工作；
c、主控制器4高压点火，燃气比例阀5开启，主控制器4根据用户设置的供暖或洗浴加热功率，控制风机3和燃气比例阀5开度,调整火焰的加热功率；
d、当主控制器4检测水温达不到用户设置值时，主控制器4同时调整燃气比例阀5和风机3，调整火焰加热功率提高水温。
e、根据用户设置的供暖或洗浴出水温度自动控制燃气比例阀5和风机3使全预热混燃气加热系统满足即用户加热功率水温要求，又使燃气燃烧热效率最佳、燃烧工况最好。
工作原理如下：假设换热燃烧室2将燃气燃烧热量传导到在换热燃烧室2内流过的水，用户通过主控制器4设置加热温度，启动系统后，主控制器4控制高压点火，燃气比例阀5和风机3前后同时工作,风压传感器6检测风机3输出端的压力，并将风压信息反馈到主控制器4，主控制器4根据反馈信息来控制风机3转速和燃气比例阀5输出的燃气流量，当水温达不到用户设置值时，主控制器4调整燃气比例阀5和风机3转速，调整火焰加热功率提高水温。风压传感器6与风机3、燃气比例阀5在主控制器4的指挥下使用户要求的热水量、加热功率和燃烧工况达到最佳值。

Claims (4)

  1. 一种自调节预混燃气加热系统，其特征在于：包括有外壳(1)，在外壳(1)内设有换热燃烧室(2)及主控制器(4)，所述换热燃烧室(2)的一端连接有用于控制空气与燃气流量的风机(3)，所述风机(3)连接有用于控制燃气流量的燃气比例阀(5)及用于检测风机(3)输出流量的风压传感器(6)，所述主控制器(4)与风压传感器(6)相连接并通过风压传感器(6)的检测信息来分别控制风机(3)、燃气比例阀(5)的输出。
  2. 根据权利要求1所述的一种自调节预混燃气加热系统，其特征在于：所述风压传感器(6)设置在主控制器(4)上，所述主控制器(4)上的风压传感器(6)与风机(3)之间及燃气比例阀(5)与风机(3)之间分别连接有用于控制燃气比例阀(5)压差的风压传导管(8)。
  3. 根据权利要求1所述的一种自调节预混燃气加热系统，其特征在于：所述换热燃烧室(2)与风机(3)之间连接有用于混合空气与燃气并为换热燃烧室(2)供气的混气管(7)。
  4. 一种自调节预混燃气加热系统控制方法，其步骤如下：
    a、通过主控制器(4)设置供暖或洗浴加热功率，并启动系统工作；
    b、风机(3)、风压传感器(6)、燃气比例阀(5)开始工作；
    c、主控制器(4)高压点火检火，主控制器(4)根据用户设置的供暖或洗浴加热功率，控制风机(3)和燃气比例阀(5)开度,调整火焰的加热功率；
    d、当主控制器(4)检测水温达不到用户设置值时，主控制器(4)调整燃气比例阀(5)和风机(3)，直到满足用户热水量和最佳燃烧工况。
PCT/CN2016/100525 2016-08-31 2016-09-28 一种自调节预混燃气加热系统及其控制方法 WO2018040166A1 (zh)

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CN107504690A (zh) * 2017-07-21 2017-12-22 中山华帝电子科技有限公司 一种带风压传感器的燃气恒温热水器的点火控制方法
CN107490196A (zh) * 2017-07-21 2017-12-19 中山华帝电子科技有限公司 一种带风机转速反馈的燃气恒温热水器的点火控制方法
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