liquid cooling application in electron microscope

      The electron microscope is composed of lens barrel, vacuum device and power cabinet. The lens barrel mainly includes electronic source, electronic lens, sample rack, fluorescent screen, detector and other components, which are usually assembled into a column from top to bottom. The vacuum device is used to ensure the vacuum state in the microscope so that electrons will not be absorbed or biased on its path. It is composed of mechanical vacuum pump, diffusion pump and vacuum valve, and is connected with the lens barrel through an air extraction pipe. The power cabinet is composed of high voltage generator, excitation current regulator and various regulation and control units.

      When the electron microscope works, it will produce relatively large heat, and the source of heat is the power cabinet. Some users often respond that the temperature is high in summer, which seriously affects the work efficiency and accuracy.

       The distance between components and circuit boards of electron microscope equipment is close, and the heat dissipation space is small. Therefore, special attention should be paid to the indoor temperature to keep it within 25 ± 2 ℃. For some heat dissipation parts, because they contain power components and adopt natural heat dissipation mode, pay attention to keep the space near them unobstructed. At the same time, avoid placing objects on the cover plate of the surface to hinder heat dissipation.

     On the other hand, new heat dissipation technologies can be considered. For example, lquid cooling  heat dissipation can be applied to the heat dissipation of electron microscope. The silent, efficient and long-life characteristics of liquid cooling open up a new route for heat dissipation technology. Therefore, liquid cooling  will be more and more widely used in high-precision equipment.