The principle and function of the vacuum drying oven is designed to dry heat-sensitive, easily decomposable and easily oxidized substances, and can be filled with inert gas. Especially, some complicated components can also be quickly dried, especially for some cleanrooms. The drying experiment of the aerospace unit enables the product to dry quickly in a very clean environment.
Vacuum drying box by definition is in a space that can create a vacuum and high temperature, high temperature it is to use electric heating to produce high temperature, this is easier to understand, that "vacuum" as its name suggests is the degree of vacuum. Is a vacuum pump, miniature vacuum pump, A main parameter of vacuum pumping equipment such as micro air pump, micro air pump, and micro air pump etc. The so-called "vacuum" means that the pressure is less than 101,325 Pascals (that is, a standard atmospheric pressure is about 101 KPa) in a given space. The state of the gas.
In the vacuum state, the gas thinness is usually expressed by the pressure value of the gas. Obviously, the smaller the pressure value, the thinner the gas.
There are usually two ways to identify the degree of vacuum:
First, identify with "absolute pressure" and "absolute vacuum" (ie, how much pressure is higher than "theoretical vacuum");
In actual conditions, the absolute value of the vacuum pump is between 0 and 101.325 KPa. Absolute pressure needs to be measured with an absolute pressure meter. At 20°C, altitude = 0, the instrument is used to measure vacuum (absolute vacuum). The initial value of the table) is 101.325 KPa. (ie a standard atmosphere pressure)
Second, use "relative pressure", "relative vacuum" (that is, how much lower pressure than "atmospheric pressure") to identify.
"Relative vacuum degree" refers to the difference between the measured object pressure and the atmospheric pressure at the measurement site. Measured with an ordinary vacuum gauge. In the absence of vacuum (ie at atmospheric pressure), the initial value of the table is 0, when measuring vacuum, its value is between 0 and -101.325 KPa (usually expressed as a negative number).
The "vacuum" commonly used in the international vacuum industry is also the most scientifically used for absolute pressure identification; it refers to "extreme vacuum, absolute vacuum, absolute pressure" but "relative vacuum" (relative pressure, vacuum gauge pressure, Negative pressure is widely used because of its simplicity of measurement, its universal measurement instruments, its ease of availability, and its low price.
Vacuum drying oven in the use of the vacuum pump also has certain requirements, there are domestic oil pumps and imported oil-free vacuum pumps two, like these are not written in detail here, the next article I will do a detailed vacuum pump The commentary, and finally, please customers if you buy this type of equipment, we must find a regular manufacturer, because this product's service and after-sale will also have corresponding protection.
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