Air proportional boiler using air pressure sensor

The present invention provides an air-proportional type boiler using air pressure sensor. When the gas supply quantity is fixed and constant rated output is produced, the revolution of air-blower can be regulated so as to make the air supply quantity become constant, so that the air quantity can be supplied according to a certain proportion, and the gas and air can be supplied according to rated output of boiler, so as to can obtain high combustion efficiency. 本发明提供一种使用空压传感器的空气-比例式锅炉。当利用通过压差按比例检测空气量的空压传感器控制燃气供应量，以使其与吸入的供风量成一定比例时，如果供风量减小，则燃气供应量也减小，这将导致锅炉输出的减小。为了解决这个问题，当燃气供应量固定，以产生恒定的额定输出时，调节鼓风机的转数，使供风量变得恒定。因此，供风量总是按与燃气供应量成比例地提供。这样，由于总是按锅炉的额定输出所需的量提供燃气和空气，所以燃烧效率得到提高，并最大限度地减少了有害废气，从而预先防止了对环境造成的污染。