青海附近想过夜电话联系

Welcome to Shandong Rugong Machinery Manufacturing Co., Ltd!

Add to collection | Website map

 Shandong Rugong Machinery Manufacturing Co., Ltd

National hotline:

400-996-7888

Current location: Home page >> news information

Design method of control circuit for air heater

Author: Shandong Rugong Machinery Manufacturing Co., Ltd     Release time: September 22, 2020

The air heater is a combined device composed of fan, motor and air heater. It is suitable for all kinds of workshops. It can be used as circulating air heating when there is no dust and flammable and explosive gas in the air. In the design of the control circuit of the air heater, the switch of the heater and the start-up switch of the fan are interlocked to avoid misoperation when the machine is running. When the machine is shut down, an active delay function is added to the control circuit to avoid overheating and smoking of the heater due to premature fan shutdown.


In order to avoid improper use of the heater of the heater, such as too high temperature, an over temperature active protection switch is installed on the heater shell to cut off the power supply of the heater and recover after the temperature drops.


Some programs to realize multi programming control have powerful functions, such as remote data transmission and remote control.

 Air heater

During the use of the heating tube, there is usually a customer reaction to the heating tube rupture. What's the reason? Today, I'd like to give you a brief analysis. The possible causes of the outbreak are as follows:


1. If the power of the heating pipe of the air heater is set too high, the surface load is too large, and the internal temperature is too high, it is easy to cause the internal heating of the electric heating pipe and cause the pipe to burst.


2. There are many kinds of modified oxidation end with high temperature resistance. If inferior powder is used and stainless steel electric heating pipe is operated, the internal expansion of stainless steel electric heating pipe may occur and the tube may break.


3. The material of the outer tube of the electric heating tube can be a thin tube wall or a seam tube, which is easy to break.


4. It may be the customer's own problem. Groundwater or tap water can be used for electric heating pipe of air heater, which has more impurities and is easy to scale. Too large, too large, which may cause the internal temperature of the electric heating tube not to spread and cause the electric heating tube to burst.


The above is the cause of the heater tube burst, so we need to understand its precautions before use, in order to avoid the phenomenon of tube burst again.



Recommended products
  • 30kW electric heater
  • 9kw factory electric heater
  • 70kw factory heater (oil fired heater)
  • 5kW electric hot air blower
contact us

Hotline: 400-996-7888

Address: No.6 Hongguang Road, Jining high tech Zone, Shandong Province