壁挂炉的工作原理
Working principle of wall mounted furnace
当壁挂炉点火开关进入工作状态的时候，风机先启动使燃烧室内形成负压差，风压开关把指令发给水泵，水泵启动后，水流开关把指令发给高压放电器其启动后指令发给燃气比例阀，燃气比例阀开始启动。燃气比例阀和风压开关以及烟气感应开关是连锁控制的，燃烧室有一定的负压燃气， 比例阀才可以工作，当5秒钟烟气感应开关检测不到有废气排出时，就切断燃气比例阀停止供气，从而保证安全使用燃气。
When the ignition switch of the wall mounted furnace enters the working state, the fan starts first to form a negative pressure difference in the combustion chamber, the wind pressure switch sends the command to the water pump, the water flow switch sends the command to the high-pressure arrester, and the command is sent to the gas proportional valve after the water pump starts, and the gas proportional valve starts to start. The gas proportional valve, air pressure switch and flue gas induction switch are interlocked and controlled. The proportional valve can work only when there is a certain negative pressure gas in the combustion chamber. When the flue gas induction switch does not detect exhaust gas in 5 seconds, it will cut off the gas proportional valve to stop gas supply, so as to ensure the safe use of gas.