Motor thermal assembly

Motor thermal assembly

Process introduction of motor thermal assembly (thermal sleeve)——Polaris-etek

  Abstract: Mainly introduce the three common processes of motor heating sleeves, respectively point out the advantages and disadvantages of the motor resistance furnace heating sleeve technology and the motor high-efficiency infrared halogen lamp heating sleeve technology, and also emphasize the high efficiency of the motor electromagnetic induction heating sleeve. With the advantages of environmental protection and energy saving, the electromagnetic induction heating sleeve technology of electric motors is a new technology of high efficiency and energy saving in electric motor manufacturing; it is favored by people, and its application in the electric motor manufacturing production process is becoming more and more extensive. Finally, Xi’an Polaris-etek Electronics is introduced. The situation and main operations of the Technology Co., Ltd. are of course.

Keywords: thermal assembly, thermal sleeve, motor thermal assembly

Several common processes of motor thermal sleeve

  The motor heating sleeve technology mainly includes: the motor resistance furnace heating sleeve technology, the motor high efficiency infrared halogen lamp tube heating sleeve technology, and the motor electromagnetic induction heating sleeve technology.

1. Heat jacket technology of motor resistance furnace

  The motor resistance furnace heating jacket process has the characteristics of low cost, simple process and high power consumption. Resistance heating furnaces were widely used in my country's early machinery manufacturing industry.

  The resistance furnace heating jacket device generally uses resistance wire as a heater. The resistance wire is a high-energy-consuming element that generates heat through power consumption. It uses its own heat to achieve the purpose of increasing the temperature of the surrounding environment. The containment part in this environment uses heat. The principle of expansion and contraction is to heat and expand the containing member and then cool, and when the hole of the containing member shrinks, it hugs the contained member.

  On the one hand, the traditional resistance furnace heating method has a long empty furnace heating time, and the resistance wire temperature control has certain hysteresis, high energy consumption, and low efficiency. How to use some modern control technologies to shorten the heating time of the resistance furnace, improve the resistance wire temperature control accuracy, and reduce some unnecessary energy consumption is the key to the development of today's resistance furnace heating jacket technology.

 On the other hand, the core component resistance wire used in the hot sleeve process of the resistance furnace, the resistance wire must always be in a high temperature state, and it is easy to be burned out due to high temperature oxidation, which results in high maintenance costs, short service life, and hot sleeve workpieces. Problems such as high scrap rate. In view of this phenomenon, it is the key to the development of thermal sleeve technology to find high-quality substitutes for resistance wire heating devices.

2. Heat-sleeve technology of motor high-efficiency infrared halogen lamp tube
 
  The motor high-efficiency infrared halogen lamp heat jacket process is another stage in the development of the motor manufacturing process. Infrared radiant heating is a comprehensive new technology. Since the 1970s, high-efficiency infrared halogen lamps have been widely used in the process of assembling the stator and rotor of the motor.

  The halogen lamp tube is a heating tube with internal resistance wire, external glass encapsulation, and internal halogen element. It is an improved product of resistance heating furnace. The role of halogen gas is to protect the resistance wire from oxidation and burn out, so that the life of the resistance wire is greatly extended. The resistance wire in the halogen lamp tube can work at a higher temperature, thereby obtaining higher brightness and higher luminous efficiency.

  Infrared heating technology has the advantages of high efficiency, energy saving, environmental protection, low maintenance cost, and convenient maintenance. But with the rapid development of new technologies, various drawbacks have also appeared. Specific shortcomings are reflected in:

(1) The service life is low, the normal service life is about 1.5-2 years;

(2) High energy consumption, which brings high usage costs;

(3) The heating temperature is not accurate, and the resulting quality scrap cost is relatively high.

3. Motor electromagnetic induction heating jacket technology

  With the gradual improvement of people's awareness of environmental protection and energy conservation, high-efficiency and environmentally-friendly high-tech technologies are becoming more and more popular. High-efficiency and energy-saving motor electromagnetic induction heating jacket technology is more and more widely used in the motor manufacturing production process, related research materials are also endless, and enterprises have also obtained corresponding economic benefits from it. Motor electromagnetic induction heating jacket technology is a new technology with high efficiency and energy saving in motor manufacturing.

  The basic principle of the heating sleeve is to use the law of electromagnetic induction and the principle of Joule heating effect; when an alternating current passes through the coil, an alternating magnetic field will be generated. If a charged conductor is placed in this coil, eddy currents will be induced. Resistive material, and the resistance value is small, the generated eddy current is very large, when the eddy current passes through, it will generate Joule heat, which will increase the ambient temperature; the heating jacket device can heat the workpiece of the electrical conductor material in a short time To a very high temperature.

  The thermal sleeve equipment of our company adopts a fully digital control software system, has a rich communication interface, is connected to an external temperature measurement device, and sets a safe temperature on the power control interface. Through the cooperation of the external temperature measurement device and the temperature control mode, it can be clear in real time. The temperature value of the heated workpiece. When the heated workpiece reaches the set safe temperature, the power supply will stop heating and enter the heat preservation or stop state (various adjustable settings), thereby effectively solving the problem of excessively high temperature of the heated workpiece; at the same time; It also has the production requirements of precise temperature control, high efficiency, high energy saving, and high qualified rate, and can effectively reduce labor costs, has the characteristics of easy realization of automation, and has certain application value.