The external atmosphere enters the heat sealed chamber through its upper air inlet, and the pressure difference between the vacuum chamber and the heat sealed chamber is utilized to inflate and expand the heat sealed chamber, causing the upper hot press frame to move down and press against the bag opening; Simultaneously heat seal the transformer and start sealing it; At the same time, after a few seconds of action, the heat sealing is completed, and it can be used up to deep hole plates.Standard heating and cooling cycle unitThe parameters of the sealing plate can be quickly set through the control panel. And raise the temperature of the heating water. Liquid refrigerant absorbs heat from the cooled object after evaporation to achieve refrigeration; The compressor is the heart of the system, playing a role in inhaling, compressing, and transporting refrigerant vapor; The oil separator is used for settling and separating the oil in the compressed refrigerant vapor; The condenser condenses the high-temperature refrigerant vapor discharged from the compressor into a saturated liquid; The cleaning process is as follows: first, inject the cleaning agent into the liquid tank, heat the refrigeration cycle, and then start the pump to operate and start cleaning.

Standard heating and cooling cycle unitIt mainly consists of several major components such as compressor, condenser, throttle valve, heat exchanger, circulation pump, heater, etc., providing users with controlled heating and cooling, uniform and constant temperature field sources. It can also be used as a heat or cold source for direct heating, cooling, auxiliary heating, and auxiliary cooling. The temperature control of the entire range is achieved with a constant temperature fluctuation of ± 0.05 ℃. It is used for chemical reaction process control in petrochemical and pharmaceutical industries, diffusion process control in semiconductor diffusion furnaces, low-temperature measurement and calibration, sample preservation and other immersion or external circulation applications. The heating and cooling cycle adopts a fully enclosed magnetic pump for circulating stirring, with uniform temperature field, no leakage, sensor open circuit, short circuit protection, dual temperature protection and other functions to ensure the safe operation of the instrument.