Ordinary and blast. The blast oven equipped with a fan in the box, to expedite the convection of hot air to keep the temperature uniform. So the items inside the evaporation of water vapor the accelerated dissipation to the air outside the box, in order to improve the drying efficiency.
The oven is divided into: ordinary and blast. The blast oven equipped with a fan in the box, to expedite the convection of hot air to keep the temperature uniform. So the items inside the evaporation of water vapor the accelerated dissipation to the air outside the box, in order to improve the drying efficiency.
Oven for dry goods or dry heat sterilization. Thermostat-regulated range (50 to 200) ° C ((50 to 250) ° C (50 to 300) 0C).
First, the structure of the oven
Oven and shouting oven or oven. Mainly composed of three parts by the cabinet, the electric heater and a temperature control system.
The cabinet enclosure, thermostatic chamber door, vent, side room.
Enclosure Material: housing made of thin iron (or steel sheet). Box wall is divided into three (including housing), formed between the three iron inside and outside the two mezzanine, outside the sandwich filled with insulation materials (glass fiber or asbestos), within the sandwich as a hot air convection layer.
A thermostatic chamber: the space surrounded by the innermost layer of the iron plate is called a thermostatic chamber. Within 2 to 3 layers of mesh shelves for placing items. Extends into the heated indoor temperature controller temperature probe (temperature sensing part) from the left side wall. Equipped with a heating wire in the bottom of the sandwich.
Door: usually are double. Glass door and the inner door is used to reduce heat loss in the case of observation of the baked article. Exterior doors for insulation.
Inlet and exhaust vent: the bottom or side of an air intake, Click here to go to the dry air. The top of the box with a row of holes, are equipped with adjustable exhaust window in it at the outlet, thereby escaping steam. The exhaust windows central insert a thermometer to indicate the temperature inside the box.
Side room: control room. Generally located in the left side of the box, with the thermostatic chamber thermal insulation separated. The installation of switches, lights, temperature controllers, blowers and other electrical components. Open side chamber door can easily repair the circuit outside the electric wire.
Some electric box control room in the box below.
Second, the electric heater
The oven heater usually consists of four electric wire parallel. Uniform heating wire coiled in firing by the refractory insulation board. Usually divided into two groups, control changeover switch. The total power (2 to 4) up to 8 kW kW power. The higher the power, the larger the box.
Third, the temperature control system
Before oven temperature control system, there is usually a differential rod and two mercury thermometer. Used on modern production oven temperature control system is mainly provided by the temperature sensor, the temperature control circuit, relay, temperature setting and a temperature display part.
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