Auxiliary cooling system of mass spectrum type laboratory instrument

Abstract

The invention relates to an auxiliary cooling system of a mass spectrum type laboratory instrument. The auxiliary cooling system comprises an air inlet, a passage, an exhaust room and an air outlet, the air inlet, the passage, the exhaust room and the air outlet are fixedly connected in sequence from left to right, a fan is arranged in the exhaust room, and a master control circuit is arranged onone side of the fan and is in communication connection with the fan. Under the condition that an exhaust line of the instrument and air speed are fixed and the distance does not greatly changes, hot air is fast drawn away and exhausted out of a room, the temperature change of air from the air outlet of the instrument to the surrounding is basically stable, drastic fluctuation of the environment temperature of a laboratory is mainly caused by the too high temperature of exhausted hot air, and therefore input air temperature reduction is key. According to the auxiliary cooling system, the temperature is reduced from the source, the hot air is fast drawn away, the instrument and a heat source are fundamentally isolated, and efficient cooling is achieved. Meanwhile, when temperature of the hotair on the air outlet is reduced below set temperature, the fan is automatically switched off through a master control circuit of a temperature sensor, natural resources are fully utilized, and environmental protection and economy are achieved.

Description

technical field [0001] The invention relates to the field of laboratory instrument cooling, in particular to an auxiliary cooling system for mass spectrometry laboratory instruments. Background technique [0002] Mass spectrometry is a universal method with high sensitivity, good specificity and fast response speed among many modern analysis and testing technologies; Signals only take milliseconds. [0003] With the increase of laboratory detection accuracy requirements, mass spectrometry instruments are more and more widely used in various trace analysis experiments. Usually, the laboratory is equipped with air-conditioning or cold air supply to cool down the instrument to ensure that the ambient temperature of the laboratory is basically constant. Experimental instruments need a stable ambient temperature during operation. When the local temperature of the instrument gradually rises, heat dissipation becomes a major hidden danger, and even affects the normal operation of...

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Problems solved by technology

[0007] 3. It affects the heat dissipation of the mass spectrometer front pump and motor, shortens the life of the instrument, and runs at high temperature, the capacitor of the front pump will burn out;

[0008] 4. Generally, the mass spectrometer is used in series before the mass spectrometer, and the fluctuation of the ambient temperature will have a greater impact on the chromatographic behavior;

[0009] 5. If the temperature exceeds 30°C, it will affect the heat dissipation of the mass spectrometer turbopump. The molecular turbopump will reduce the speed for self-protection, thereby reducing the power and affecting the work of the mass spectrometer.

[0010] 6. The fluctuation of the ambient temperature will affect the initial temperature of the sample and the cooling efficiency of the furnace box, and affect the peak of the mobile phase;

[0011] 7. The instrument radiates heat to the outside. If the heat dissipation is not smooth and the ambient temperature is too high to meet the requirements of the machine, it will self-protect and turn off or automatically shut down, which will affect the efficiency.

[0012] 8. For a long time, the failure rate of instruments caused by the laboratory environment is very high

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