2013年9月9日星期一

The structure introduced oven

Drying oven is divided into: general type and blast two. Blast drying oven fitted with a fan in the box to accelerate hot air convection to keep the temperature uniform . The items inside accelerated evaporation of water vapor to dissipate in the air outside the box , in order to improve the drying efficiency.Drying oven is divided into: general type and blast two. Blast oven fitted with a fan in the box to accelerate hot air convection to keep the temperature uniform . The items inside accelerated evaporation of water vapor to dissipate in the air outside the box , in order to improve the drying efficiency.Oven for drying items or dry heat sterilization . The temperature adjustment range , (50 ~ 200) ℃ ( or (50 ~ 250) ℃, (50 ~ 300) 0C).First, the structure of ovenAlso known as oven or oven drying . Mainly by the cabinet , the heater and temperature control system consists of three parts .Cabinet includes enclosure , thermostatic chamber , door , into the vent , side room .Enclosure Material: shell with a thin iron plate ( or sheet steel ) is made. Multi- tank wall is divided into three ( including housing ) , formed between the inner and outer two three- iron sandwich , sandwich filling the outer insulating material ( glass fiber or asbestos ) , as hot air convection within the mezzanine floor .Thermostatic chamber : the inner space surrounded by iron called thermostatic chamber . There are 2 to 3 layers of mesh shelves for placing items. Temperature controller temperature probe ( temperature sensing part ) , from the left wall into the heated indoor . Heating wire is installed in the bottom of the sandwich .Door : usually are double ceremony. The inner door is glass door , for reducing heat loss observed in the case of baked goods . Exterior doors for insulation .Inlet vent : has a bottom or side air intakes , dry air will enter . Tank top has a vent at its outlet with adjustable exhaust windows , whereby the steam to escape. Exhaust a thermometer inserted into the center of the window , to indicate the temperature inside .Ceshi : To control room. Generally located in the box on the left , with thermostatic chamber separated by insulation . Within which is mounted switches, lights , temperature controllers, blowers and other electrical components. Side chamber door opened , can easily access the circuit outside the electric wire .And some electric box will control room set up in the box at the bottom.Second, the electric heaterOven electric heater usually consists of four electric wire parallel. Heating wire coiled evenly fired by refractory insulation board. Generally divided into two groups , controlled by the switch . Total power (2 ~ 4) kW, up to large power 8 kW. Larger power , the cabinet are greater.Third, the temperature control system
 
Used on the previous oven temperature control system, usually have differential rod and mercury thermometers two. The use of modern production oven temperature control system mainly by the temperature sensor , the temperature control circuit , the relay , the temperature setting and the temperature display part .


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