ultra low temperature storage

Ultra low temperature freezer also known for ultra low temperature storage box, ultra low temperature freezer, ultra low temperature storage box, etc., mainly used for the preservation of biological samples or drugs. Ultra low temperature freezer temperature range approximately from -60℃ to -150℃. Gap between lateral to the use of ultra low temperature freezer refrigeration system using cascade refrigeration system working principle, using two sets of full closed compressor as high and low temperature stage compressor. Low temperature evaporator copper coil form directly attached to the box, and with the heat conduction mortar caulking coil, and the wall of the box, to increase the heat exchange effect. Condensation evaporator for shell and tube structure, the internal four pipe thread copper tube with counterflow heat exchange. Low level system and equipped with gas heat exchanger can be made from the evaporator of low pressure gas enters into the condensation evaporator before the high pressure gas heat exchange, it will not only reduce the evaporation condensation Thermal load of the device, and the use of heat. Filter more use of paraffin filter, the purpose is to effectively remove the paraffin wax in the frozen oil, in order to reduce the possibility of oil blocking system. In addition Toffon ultra low temperature freezer support non standard custom, can also according to different purposes of selecting some accessories, for example, temperature recorder, convenient record ultra-low temperature refrigerator operating parameters; carbon dioxide a standby system for special circumstances, to ensure the preservation of gas environment to maintain a normal state; voltage booster, ensure the normal work of the compressor in the low state. Source: Shanghai Toffon Machinery Equipment Co., Ltd. www.toffon.com Specialized in producing all kinds of refrigeration equipment, including chromatography freezer and freeze dry machine (production of freeze drying m....

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