The cryogenic treatment box is composed of a refrigerator and a liquid nitrogen storage tank. It is a two-layer nesting of an inner layer box and an outer layer box. The upper part is provided with a box structure with an open lid. The inner layer box is a cold treatment box, which is cooled by liquid nitrogen. The outer box is a freezer. The equipment can fully meet the processing requirements of low-capacity cryogenic (-80 ℃ ～ -180 ℃). The cold processing temperature range is wide, the control accuracy is high, and the equipment investment is low. It can be used for cold processing and refrigerated containers. The utility model is characterized in that the processing box is nested in two layers of an inner layer box and an outer layer box, the upper part is provided with a box structure with an open lid, the inner layer box is a cold processing box, and a serpentine tube heat exchanger is arranged inside the box , The inlet of the upper end of the serpentine tube is connected to the liquid nitrogen pipe, the other end of the liquid nitrogen pipe is connected to the liquid nitrogen storage tank, the digital program control instrument and the touch screen digital paperless recorder.

 

Ordinary program-controlled cryogenic box

      The cabinet is made of double-layer stainless steel, and the stressed parts are specially reinforced. Special insulation layer, effectively block the cold and heat exchange inside and outside the box. The lid is equipped with a pneumatic booster spring to facilitate the opening and support of the lid. A sealing strip and a special door buckle are installed between the box cover and the box body to ensure complete sealing and reliable locking. Equipped with electrical interlock and alarm devices to ensure safe use. Humanized computer operation interface is convenient for users.