I. INTRODUCTION
With the continuous improvement of industrial automation and intelligence level, industrial control machine as the core equipment for industrial control, its stability and reliability for the operation of the whole system is crucial. As one of the key factors to ensure the performance of industrial control machine, heat dissipation design is directly related to the operational efficiency and service life of the equipment. In this paper, we will discuss the principle of thermal design of industrial control machine, technical points and maintenance strategies, in order to optimize the design and stable operation of industrial control machine to provide reference.
II. Industrial computer thermal design principles and technical points
Thermal design principle
The thermal design of the industrial computer is mainly based on the principle of thermodynamics, through the effective conduction of heat generated within the device to the external environment, in order to maintain the stability of the internal temperature of the device. Heat dissipation design should not only consider the heat generated by the equipment, but also combine the use of the equipment environment, space layout and other factors to develop a reasonable heat dissipation program.
Technical points
(1) Fanless cooling technology
Fanless cooling technology is mainly through the heat sink, heat pipe, thermal pads and other passive cooling elements to realize the effective transfer and distribution of heat. This technology does not need to rely on fans for heat dissipation, and has the advantages of low noise, easy maintenance, etc. It is especially suitable for industrial sites that are sensitive to noise or in harsh environments.
(2) Heat sink design
Heat sink is an important part of the thermal design of industrial control machine, its design directly affects the cooling effect. Heat sinks are usually made of aluminum or copper and other metal materials with good thermal conductivity to increase the surface area and the number of fins to improve thermal efficiency. At the same time, the layout and installation position of the heat sink also need to be reasonably planned according to the heat generation of the equipment and the use of the environment.
(3) Heat Pipe Technology
Heat pipe technology is a highly efficient heat transfer element that realizes rapid heat transfer through the evaporation and condensation process of the working medium inside the heat pipe. In the heat dissipation design of industrial control machine, heat pipe technology can be used to connect the heat generating element and heat sink, and rapidly transfer the heat to the heat sink and emit it to the external environment.
(4) Thermal pad technology
Thermal pad is a soft material with good thermal conductivity, usually used to fill the gap between the heating element and the heat sink to reduce thermal resistance and improve heat transfer efficiency. The selection of thermal pads needs to consider its thermal conductivity, temperature resistance and compression properties and other factors.
(5) thermal layout optimization
Thermal layout optimization is a key link in the thermal design of industrial control machines, need to consider the heat generation of the equipment, the performance of the thermal components and the use of environmental factors. Through reasonable layout design, it can reduce the thermal cross between the heat generating components, improve the heat dissipation efficiency and reduce the temperature of the equipment.
III. Industrial computer cooling maintenance strategy
Regular cleaning
The radiator, heat sink and other components of the industrial computer are prone to dust accumulation, which affects the heat dissipation effect. Therefore, these parts need to be cleaned regularly to keep their surfaces clean and dust-free. Tools such as vacuum cleaners or soft brushes can be used for cleaning; do not use water or chemical solutions for cleaning.
Inspection and Replacement
The heat dissipation components of the industrial control machine, such as heat sinks and heat pipes, may also be aged or damaged and need to be inspected and replaced periodically. When checking, you should pay attention to observe whether the surface of the heat dissipation components are corroded, deformed or damaged, etc., and replace them in time if necessary.
Optimization of heat dissipation system
For industrial control machines with poor heat dissipation, the heat dissipation efficiency can be improved by optimizing the heat dissipation system. For example, you can increase the number of heat sinks or increase the area of heat sinks to improve the heat dissipation effect; you can also use more efficient cooling elements, such as using heat pipe technology or liquid cooling technology.
Environmental control
The cooling effect of the industrial computer is closely related to the environmental temperature, humidity and other factors. Therefore, it is necessary to control the use of industrial control machine environment, keep the indoor temperature is appropriate, humidity is moderate, to avoid too high or too low temperature and humidity on the effect of heat dissipation.
Monitoring system temperature
By installing a temperature monitoring system, the temperature of the industrial computer is monitored in real time, so that heat dissipation problems can be found and dealt with in a timely manner. The temperature monitoring system can set the temperature threshold, when the equipment temperature exceeds the threshold automatically alarm or take corresponding measures to ensure that the equipment operates within the safe temperature range.
IV. Conclusion
Heat dissipation design is one of the key factors in the performance guarantee of industrial control machine, reasonable heat dissipation design can effectively reduce the temperature of the equipment, improve the stability and reliability of the equipment. This paper introduces the principle of thermal design of industrial control machine, technical points and maintenance strategies, hoping to provide reference for the optimization of the design and stable operation of industrial control machine. In practical applications, according to the specific conditions of the equipment and the use of the environment to develop appropriate thermal solutions and maintenance strategies to ensure the long-term stable operation of the equipment.