Hot air circulation ovens generally have heating tubes and ovens with circulating fans can be called hot air circulation ovens, because no matter what the structure of the oven is, whether the wind direction is horizontal or vertical, in the final analysis, hot air is circulating inside, so it is It can be commonly called a hot air circulation oven, such as an electric blast oven, a double-door high-temperature sterilization oven, etc. So, do you know what a hot air circulation oven is? What are the working principle and 6 major structures of hot air circulation oven? If you have needs in this area, you might as well come with me to find out!
What is a hot air circulation oven?
The hot air circulation oven, also known as the electric blast drying oven (hereinafter referred to as the drying oven), is an upgraded version of the FY841 model and pays more attention to the energy saving and energy saving of the product. Safety, it adopts the new energy-saving and environmentally friendly heating technology promoted by the State Economic Commission. When it is absorbed by the heated object, it can be directly converted into heat energy, thereby obtaining a rapid drying effect, shortening the production cycle, saving energy, and improving product quality. Easy to use and effective, it is an ideal drying equipment with broad prospects. It is suitable for production workshops or laboratories in industry, agriculture, medical and health care, plastic machinery, colleges and universities and scientific research departments.
Six major structures of hot air circulation oven
1. Heating system: fully independent system, nickel-chromium alloy electric heating heater;
2. Circulation system: High temperature resistant and low noise motor. Multi-blade centrifugal wind wheel;
3. Control system: imported advanced temperature control instrument with PID adjustment, fast self-tuning, multiple parameters can be set, and digital display , reading is extremely convenient;
4. Inlet (outlet) air volume function: manual adjustment knob; has timing function;
5. Temperature recovery time is fast;
6. Safety protection: The hot air circulation oven is equipped with leakage, short circuit, over-temperature, motor overheating and over-current protection;
Working principle of the hot air circulation oven
The air circulation system of the hot air circulation oven adopts The fan circulation air supply mode ensures uniform and efficient air circulation. The air source is driven by a circulating air supply motor (using a non-contact switch) to drive the wind wheel through the heater, and the hot air is sent out, and then to the inner chamber of the oven through the air duct, and then the used air is sucked into the air duct to become an air source for recirculation. Use with heat. Ensure indoor temperature uniformity. When the temperature value swings due to the door opening and closing action, the air supply circulation system quickly returns to the operating state until it reaches the set temperature value
Uses of hot air circulation oven
Hot air circulation oven is used for Heating, solidification, drying and dehydration of materials in medicine, chemical industry, food, agricultural and sideline products, aquatic products, light industry and other industries. Such as raw materials, traditional Chinese medicine drinking water, extracts, powders, granules, dehydrated vegetables, etc.
Application scope of hot air circulation oven
Hot air oven is suitable for baking chemical gases and food processing items to be baked, curing of ink, drying of paint films, etc., and is widely used Precision baking, drying, tempering, preheating, Shaping, processing, etc.; internal heat circulation ensures that baked objects are heated evenly.
Safe operating procedures for hot air circulation oven
The oven must be used according to the temperature range specified on the nameplate, and the oven must be well grounded.
No oil basins, oil drums, cotton yarn, cloth scraps and other flammable items should be piled near the oven, and no washing, scraping, and spray painting should be done next to the oven.
Prevent other objects from falling into the bottom of the oven and coming into contact with the resistance wire to cause a short circuit.
Before opening the oven, the power must be turned off. You are not allowed to leave during the heating process.
Do not store items in the oven, such as tools, equipment parts and oil volatiles.
Parts washed with flammable liquids such as gasoline, kerosene, alcohol, and banana water, as well as spray-painted items, should be left at room temperature for 15 to 30 minutes until most of them are removed
Only after the flammable liquid has evaporated can it be placed in the oven for baking. Pay attention to ventilation indoors.
The oven must not be cleaned during operation, nor must it be wiped with gasoline.
When placing non-metallic items in the oven for heating, they must be carried out in accordance with the process regulations.
The ventilation gate of the oven drying box must be opened before operation to prevent explosion.
Before use, check the automatic control device to see if the indication signal is sensitive and effective, and whether the electrical circuit insulation is intact and reliable.