Vacuum drying ovens are also called stainless steel vacuum drying ovens, which are widely used in industry, laboratories, and pharmaceutical industries.The most commonly sold vacuum drying oven models are: DZF-6010 vacuum drying oven, DZF-6020 vacuum oven, DZF-6050 vacuum drying oven, DZF-6090 vacuum drying oven.

Current status of the use of vacuum drying ovens
Vacuum drying ovens are widely used in research and application fields such as biotechnology, pharmaceutical science and technology, scientific research institutes, product quality inspection, medical and health, agricultural scientific research, environmental protection, etc.
Its biggest feature is to let the items be dried under vacuum conditions. This drying method has many advantages:Vacuum conditions greatly reduce the boiling point of the liquid in the sample that needs to be dried, and the drying effect will be better. For items that are not easy to dry, such as powder or other granular items, it can effectively shorten the drying time;Suitable for drying heat-sensitive materials that are easy to decompose, polymerize and deteriorate at high temperatures;It can be disinfected before drying, and no impurities are mixed in during the drying process.

For various mechanical parts, glassware and porous objects with complex structures, they are cleaned and dried without leaving any residual material;It can completely eliminate the possibility of oxide explosion when exposed to heat, and it is safe and reliable to use;Compared with ordinary drying ovens that rely on hot air convection circulation, powdery objects will not be blown by flowing air, which effectively guarantees the accuracy and reliability of experimental results.

The heat conduction of the laboratory vacuum drying oven is based on the form of electromagnetic radiation that dissipates the heat to the outside. The object radiates outwards while also absorbing the energy radiated from other objects.For the inside of the vacuum drying oven, its different positions are obviously related to the distance and angle from the heating bottom plate, and the shape of the measuring instrument or the shape and surface blackness of the vessel used to place the article.

Problems encountered in actual measurement and testing of industrial vacuum drying oven.However, the manufacturer’s drying of samples is carried out in a vacuum state. Due to the characteristics of vacuuming, it needs to be fully sealed. The measurement in a completely closed and close to vacuum state faces many problems and challenges, which brings great difficulties to the actual measurement.

At the same time, the industry standard places the temperature calibration point of the stainless steel vacuum drying oven. In the temperature volatility test, it is stated that the position of the temperature sensor at the geometric center point of the working space has an impact on the temperature measurement, which determines the uniformity of the medical laboratory vacuum drying oven. The vacuum drying oven adopts a heating shelf design, and the difference in temperature at the same height as the heating shelf is not explored here.

Two questions are raised. Question 1: Is the temperature deviation of the vacuum drying oven in the two states of normal pressure and vacuum consistent? If inconsistent, how much does the increase in temperature affect the temperature deviation?Question 2: The industry standard does not specify the temperature uniformity of the vacuum drying oven. The various library materials consulted all say that the uniformity is poor. Is the temperature uniformity really poor?