Cooling device based on vacuum sublimation purification equipment

Abstract

The invention provides a cooling device based on vacuum sublimation purification equipment, which aims at solving the problems that the temperature adjustment of a cooling water system used at present completely depends on presetting, and the cooling capacity of the cooling device cannot be adjusted according to actual conditions, and comprises a refrigerator, a water pump, a control unit, a temperature sensor, a cooling pipeline and a valve, the refrigerating machine is connected with the cooling pipeline and the control unit and used for cooling liquid in the cooling pipeline to a specified temperature according to a temperature control signal sent by the control unit; the water pump is connected with the cooling pipeline; the cooling pipelines are arranged around the to-be-cooled devices, valves are arranged in the cooling pipelines, and the valves are used for separating the cooling pipelines for cooling the different to-be-cooled devices; the temperature sensors are arranged in the cooling pipelines for cooling different devices to be cooled, the temperature sensors are connected with the control unit, the control unit can control the refrigerating machine to adjust the water temperature according to returned temperature information, and the problem that the water temperature cannot be adaptively adjusted according to actual conditions is solved.

Description

technical field [0001] The present application relates to the technical field of purification of solid organic compounds, in particular to a cooling device based on vacuum sublimation purification equipment. Background technique [0002] Organic light-emitting diodes have the advantages of active light emission, fast response, and flexibility, and have been widely used in many fields. They are recognized as the next-generation display and lighting technology. With the increase in the production capacity of organic light-emitting diodes, the demand for high-purity organic small molecule materials is increasing year by year, and higher requirements are placed on the high-purity material production capacity market. At present, the vast majority of high-purity organic small molecule materials are obtained from vacuum sublimation purification. In the process of vacuum sublimation purification, in order to protect the vacuum pump and vacuum chamber and adjust the internal and exte...

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Problems solved by technology

[0003] At present, there are mainly two ways to cool down the vacuum sublimation purification equipment: municipal water supply cooling and cooling water system using frequency conversion refrigeration and constant flow circulation to cool down. Municipal water supply does not recycle water resources, which is relatively wasteful. Large impact, poor control accuracy, resulting in poor cooling effect

For the cooling water system with variable frequency refrigeration and constant flow circulation, if the temperature is set too low, the cooling water will remain at a low temperature for a long time during use, especially in the hot and humid environment in summer, the cooling pipe will condense in the air If too much water vapor is left in the laboratory or clean room, it will have a serious impact on vacuum sublimation purification equipment and high-purity materials, and will also cause more power loss

And if the set temperature is too high, it will cause the compression refrigerator to quickly drop the water temperature to the set temperature, then stop cooling, and turn on again after the water temperature rises. Such frequent switching will damage the working life of the inverter refrigerator.

[0004] Therefore, now those skilled in the art urgently need a cooling device based on vacuum sublimation purification equipment to solve the problem that the temperature adjustment of the cooling water system with variable frequency refrigeration and constant flow circulation is completely dependent on preset settings and cannot be adapted to the actual situation. Adjust the cooling capacity of the cooling device

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