What's the difference between the so-called "special refrigerator" and the ordinary refrigerator?

Special refrigerator is an explosion-proof freezer system made of integrated explosion-proof technology according to the requirements of industrial environment. Can be widely used in petroleum, chemical industry, medicine, aerospace, military and other fields. It is used for cooling and storing drugs and reagents at low temperature, and it is not easy to store volatile, flammable and explosive dangerous goods at room temperature.

The traditional special refrigerator consists of compressor, condenser, condenser fan, evaporator and thermostat. In order to ensure the safe use of special refrigerators in dangerous places, composite explosion-proof technology is generally used to explosion-proof refrigerators. The compressor and condensing fan are protected by pouring sealing or explosion-proof technology. As a passive switch, the thermostat and the explosion-proof active optocoupler solid-state relay form an intrinsically safe automatic temperature control system. In addition, in order to protect the compressor from damage, delay explosion-proof solid-state relay, overload protection and thermal protection devices are adopted, and some control appliances are flameproof. In terms of electrostatic treatment, it is safer and more reliable to spray conductive paint in the inner cavity of freezer to eliminate electrostatic effect.

Special refrigerators adopt the latest electronic temperature control system, which can be divided into direct cooling type and indirect cooling type, with various control functions. The explosion-proof refrigerator can not only control the start and stop of the compressor according to the temperature of the refrigerated freezer, but also automatically display the temperature of the refrigerated freezer, defrost automatically according to the thickness of the frost layer and the working time of the compressor, and has many functions such as overvoltage protection, automatic deodorization, language prompt and so on. Explosion-proof refrigerator adopts fuzzy control system, which solves the multi-function control problem of explosion-proof refrigerator, makes explosion-proof refrigerator safer and more reliable, and of course increases the maintenance difficulty to some extent. The whole explosion-proof refrigerator adopts the internationally leading ultra-weak electricity technology to isolate the intrinsically safe circuit, which is made by special technology and explosion-proof treatment, making it safer and more reliable to use.