Purification of hot air circulation oven fault analysis and troubleshooting
Release time:
2024-03-23
Hot air return oven is the use of electricity as a heat source, with low noise axial fan to heat exchanger to heat the air by convection, hot air laminar flow through the baking tray and material heat transfer. This Sheng Yuan Oven Equipment Co., Ltd. adopts 100 and purified hot air circulation also laminar flow purification, equipped with computer automatic control system, temperature control, the whole machine noise is small, stable operation, to achieve the automatic thermostatic control and fully closed, fully circulation also operation, in line with the requirements of different manufacturers GMP production specifications.
Hot air return oven is the use of electricity as a heat source, with low noise axial fan to heat exchanger to heat the air by convection, hot air laminar flow through the baking tray and material heat transfer. This Sheng Yuan Oven Equipment Co., Ltd. adopts 100 and purified hot air circulation also laminar flow purification, equipped with computer automatic control system, temperature control, the whole machine noise is small, stable operation, to achieve the automatic thermostatic control and fully closed, fully circulation also operation, in line with the requirements of different manufacturers GMP production specifications.
1、 The working principle of purified hot air circulating oven
The temperature control of the box adopts a 23 A microcomputer temperature control and PLC automatic control system, the temperature signal is collected by platinum resistance, the amplification of the temperature controller and the set value is compared to get the PID control signal, and at the same time, the PLC programmable controller outputs the control signal to control the solid-state relay SSR conduction, the solid-state relay and then control the heater to heat up the box in the warming up stage. When the temperature reaches the set value, the temperature controller output PID control signal PLC, PLC output control signal to the time relay KT, so that it began to keep warm timing, at the same time, close the inlet fan and exhaust air disc valve. Through the PID control electric heating constantly open and close, the box is in the hot air cycle also keep warm. When the insulation time reaches the set value, the time relay output signal to PLC, PLC output fully closed electric heating, open the water cooling solenoid valve, so that its suction conduction, so that the box is in the cooling stage. When the temperature inside the box falls ≤ 40 ℃, temperature controller output control signal to the PLC, PLC output to close the hot air circulation fan, drying cycle procedure ends. TEED a 2001 K copy temperature alarm temperature controller output signal control PLC the operation of the entire programme, platinum resistance PT 100 test signal to the alarm temperature controller and copy the temperature alarm set temperature value for comparison, when the actual temperature value is lower than the set value, the output control signal to the PLC, the PLC programme is running normally. When the actual temperature value copied over the set value, the output control signal to the PLC, PLC shut down the operating procedures. Therefore, the set value of the copy temperature alarm is generally higher than the set value of the operating temperature.
Tel: 86-13912872858
E-mail: ntgsq58@163.com
Address: Pingchao Town Industrial Park, Tongzhou District, Nantong City, Jiangsu Province
View mobile version
Copyright©2024 Nantong Zhirun Electromechanical Co., Ltd.