Working principle and components of electric blast drying oven

The electrothermal constant temperature air blast drying oven is composed of a box body, an electric heater, a temperature controller, a fan, an air convection circulating duct, an air inlet duct, an air outlet duct and an air outlet size adjusting device Electric constant temperature blast drying oven One of the functions of the blower is to make the air in the box circulate convection The other is to continuously inhale a part of fresh air outside the box from the uniquely designed air inlet duct without affecting the temperature in the studio into the box for heating and circulation When a certain volume of external gas is inhaled in the box, the same volume of waste gas with water vapor will be discharged out of the box from the exhaust hole The air exchange volume (or exhaust gas rate) inside and outside the box can be adjusted by changing the size of the air outlet Through the constant exchange of indoor and outdoor air, the moisture is also taken out of the oven, so as to achieve the purpose of drying The function of the blower is to make the air in the drying box circulate horizontally (table type electric blast drying box) or vertically (vertical blast drying box), so that the air in the box is blown to the electric heater for heating and then sent to the working room, and then the air in the working room is sucked in by the blower and blown to the electric heat pipe for heating, and the temperature in the box is more even when the air is continuously heated The hot air in the working room can heat the wet sample articles, and the water will also become water vapor and mix into the hot air due to heating The electric heating constant temperature blast drying oven is heated by an electric heater, and the heating wire exposed in the air is easy to oxidize due to high temperature and long-term heating, which affects the service life The Donglu brand drying oven heater usually adopts coil type electric heating pipe, that is, the heating wire is located in the heating pipe, which can reduce the rate of hypoxia and increase the service life At the same time, the heat is transferred to the steel pipe to increase the heat conduction area The temperature controller of the drying oven is used to control and display the temperature When the temperature in the oven is lower than the set temperature, the temperature controller controls the heater to generate heat continuously or in the gap, so that the temperature in the oven can be controlled.