The liquid nitrogen generator (liquid nitrogen machine) is composed of three parts: nitrogen generator (built-in or external), refrigeration equipment (gas liquefaction equipment) and Dewar tank. The whole machine has the function of automatic liquid replenishment with one key, and the equipment starts automatically when the liquid nitrogen in the liquid nitrogen tank is lower than the set liquid level. Liquid nitrogen machine manufacturing adopts the principle of mixed mass throttling refrigeration, cooling nitrogen from the ambient temperature to the saturation condensing temperature of nitrogen liquefaction step by step, the lowest temperature of refrigeration machine refrigeration can be up to -196 °, the liquid nitrogen liquefied in the refrigeration evaporator is transported to the liquid nitrogen tank to save the liquid nitrogen to obtain liquid nitrogen, the equipment automatically detects the liquid nitrogen level in the Dewar tank, and fully automatic control of the operation of the equipment.

The air enters the air compressor after removing dust and mechanical impurities through the air filter, compressing to the required pressure, and outputting clean compressed air after strict purification treatment of oil, water and dust removal, with the purpose of ensuring the service life of the molecular sieve in the adsorption tower. There are two adsorption towers with carbon molecular sieves, one tower works while the other tower is decompressed and desorbed. The clean air enters the working adsorption tower, passing through the molecular sieve when oxygen, carbon dioxide and water are adsorbed by it, the gas flowing to the exit end is nitrogen and trace amounts of argon and oxygen. Another tower (desorption tower) so that the adsorbed oxygen, carbon dioxide and water from the molecular sieve pores out of the discharge to the atmosphere. In this way, the two towers take turns to complete the separation of nitrogen and oxygen, continuous output of nitrogen, variable pressure (_bian4 ya1) adsorption nitrogen purity of 95%-99.9%, if you need a higher purity of nitrogen need to increase the nitrogen purification equipment. Variable pressure adsorption nitrogen machine output of 95%-99.9% nitrogen into the nitrogen purification equipment, while adding the appropriate amount of hydrogen through a flow meter, in the purification equipment in the oxygen removal tower hydrogen and nitrogen in the trace oxygen catalytic reaction to remove oxygen and then cooled by the water condenser, vapor separator to remove water, and then through the dryer depth drying removal.

The nitrogen liquefier adopts the principle of mixed mass throttling refrigeration to cool the nitrogen from ambient temperature to the saturation condensing temperature of nitrogen liquefaction step by step, and the lowest temperature of the refrigerator can reach 196°. The liquid nitrogen liquefied in the evaporator is transported to the liquid nitrogen tank to save the liquid nitrogen, and the equipment automatically detects the liquid nitrogen level in the Dewar tank and controls the operation of the equipment fully automatically.

Excellent performance, perfect capacity! Our laboratory 40L split liquid nitrogen machine is the best choice for your laboratory freezing needs. The equipment is equipped with an external nitrogen generator and a built-in Dewar tank, with a cooling capacity of up to 500W, capable of producing high-quality liquid nitrogen. The one-button automatic control system on the touch screen makes the operation of the equipment simple and convenient. The equipment has an efficient air cooling system to ensure rapid cooling effect. In addition, we provide lifetime maintenance services to guarantee the reliability and durability of your equipment. Choose our products and bring excellent liquid nitrogen supply to your laboratory!