Introduction to low temperature coolant circulation pump:
    The refrigeration cycle tank ( pump ) , also known as the low temperature constant temperature bath, is a high-precision constant temperature source with its own refrigeration, and has the function of a small chiller. Widely used in petroleum, chemical, metallurgy, pharmaceutical, biochemical, physical properties, testing and chemical analysis and other research departments, institutions of higher learning, factory laboratories and metrological quality inspection departments. Depending on the size of the slot opening, a constant temperature test can be carried out in the bath, or it can be connected to other equipment through a hose and used with a constant temperature source. Internal circulation: The circulation of the liquid medium in the tank by the pump increases the uniformity of the temperature in the tank and reduces the temperature fluctuation. External circulation: Through the circulation capacity of the pump, the insulated hose is connected with the external equipment by the water outlet to form a closed loop, which flows back to the water inlet of the equipment, and externally introduces the constant temperature medium in the tank to establish an external constant temperature field.
Application areas for circulating water thermostats:
Biochemical fields: rotary evaporator, Abbe refractometer, polarimeter, atomic absorption, ICP-MS , ICP , nuclear magnetic resonance, CCD , bio-fermentation tank, chemical reactor ( synthesizer ), etc.
FIELD material: electron microscopy, X-ray diffraction, X fluorescence, vacuum sputtering, plating, vacuum coating machine, ICP etching, various semiconductor devices, fatigue testing machine, chemical deposition system, atomic deposition system.
Medical field: superconducting magnetic resonance, linear accelerator, CT , low magnetic field nuclear magnetic resonance, X- ray machine, microwave therapy machine, medical cold cap, cooling blanket and so on. Physicochemical fields: lasers, magnetic fields, various molecular pumps, diffusion pumps, ion pumps, and materials. A variety of water-cooling equipment used.
Features:
Energy savings – Cooling water can be recycled in the system loop during summer and high ambient temperatures, saving a lot of water.
More efficient – a circulating water plant can meet the cooling needs of multiple external devices at the same time, providing a constant temperature source for condensation experiments.
Temperature control accuracy - PID temperature control technology, built-in PT100 sensor, high temperature control accuracy, temperature digital display, intuitive operation
High security - self-diagnosis function; multiple safety protection functions such as freezer overload protection.
Low temperature antifreeze ratio
A solution of ethylene glycol: glycol / water 55/45 (- 30 ℃), 70/30 (- 40 ℃)
B -glycerol aqueous solution: glycerol / water 70/30 ( - 30 °C ) In use, the density of the low-temperature antifreeze should be checked frequently to meet the following requirements: 1. Aqueous solution of ethylene glycol: P20 = 1079 kg / m3 ( - 30 °C ) ( - 40 °C ) 2. Aqueous glycerol solution: P20 = 1182.6 kg / m3 ( - 30 °C ) When the antifreeze is replaced by water, the minimum temperature must be above 0 °C.
Cooling water selection related:
Generally, small-circulating water-cooling thermostats with a cooling capacity of less than 1000 W are widely used in laboratory condensing devices such as low-power lasers, parallel evaporators, parallel quantitative concentrators, parallel reactors, and distillation meters. Medium-sized circulating water cooling thermostats with a cooling capacity of less than 6000W are widely used in analytical instrument industries such as AAS , ICP , ICP-MS , and electron microscopy, and laboratory equipment such as rotary evaporator, Soxhlet extraction, solid-liquid extraction, and Kjeldahl analyzer. , laser marking machine, laser cutting machine and other laser instruments and machine tool industry. Large circulating water cooling thermostat with refrigeration capacity above 10KW is widely used in X -ray diffractometer, magnetic mass spectrometer, fatigue testing machine, vacuum coating machine, plastic forming equipment, laser cutting machine, X - ray fluorescence spectrometer, infrared spectrometer, differential thermal analysis. Instruments, nuclear magnetic resonance and other equipment with high refrigeration constant temperature requirements.
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Applications: Cooling of heat-generating parts of semiconductor manufacturing equipment: single-wafer cleaning and transfer, printing machine, automatic chuck mounting device, spraying device, ion plating device, etching device, single-wafer processing device, slicer, packaging machine, developer Temperature management, exposure device, heating device for the magnetic part, etc.
Cooling of the heat generating portion of the laser device: laser processing, heat generating portion of the fusion splicer, laser marking device, generating device, carbon dioxide laser processing machine, and the like.
Cooling of heating parts of other industrial machines: plasma welding, automatic packaging machine, mold cooling, washing machine, gold plating tank, precision grinding machine, injection molding machine, molding part of resin molding machine, etc.
Analysis and detection of the cooling of the heat generating portion of the machine: the light source of the electron microscope, the light source portion of the ICP emission spectroscopic analyzer, the heat generating portion of the spectrophotometer, the heat source of the X- ray analyzing device, and the light source of the atomic absorption photometer of the heat generating portion of the automatic pulse amplitude modulator Wait. The water tank can be circulated and cooled in and out of the machine with high-quality pure water, which can ensure the normal operation of precision instruments with high water quality requirements and prolong the service life of precision instruments.
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