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How does the constant temperature and humidity culture machine detect the failure of the equipment refrigeration cycle?
The refrigeration cycle system of the constant temperature and humidity culture machine is a closed system formed by a refrigeration compressor, a condenser, a drying filter, a capillary tube and an evaporator through a copper tube. The system is filled with a certain amount of refrigerant, which under the action of the compressor, converts the low-pressure low-temperature gaseous refrigerant absorbed by the evaporator into a high-temperature high-pressure gaseous refrigerant, and enters the condenser to be cooled and liquefied to form a refrigerant. In the refrigeration system, the agitator ring is continuously followed to achieve the purpose of refrigeration.
The refrigeration compressor of the constant temperature and humidity humidifier is fully enclosed and is the power to keep the refrigerant circulating. If the suction and exhaust pipes of the test chamber refrigeration compressor are broken or there is leakage of small pores, the intake or exhaust of the system will be reduced, the running time of the refrigeration compressor will be prolonged, the frosting of the evaporator will be incomplete or not frosted, and the refrigeration purpose will not be achieved. . Therefore, pay attention to the integrity of the piping of the refrigeration system during use.
When the suction and exhaust pipe of the constant temperature and humidity humidifier compressor is slightly leaky due to welding or collision, it is not easy to find with soapy water, and it can be inspected by the immersion method.
The specific method is: block the high and low pipelines of the compressor, inject the nitrogen pressure test tube into the process tube, and then immerse the compressor in the water. Observe the presence of the waterless bubbles. If there is blisters, it indicates leakage. Perform a water immersion test to find the compressor at the leak, re-weld the leak, and dry it for 4 hours to reuse it.
Of course, for the refrigeration cycle failure, in addition to the problem of the compressor, it is usually still normal whether the motor is running, whether the regulating flap of the air circulation is normally opened, whether the humidity of the electronic balance is too high in the constant temperature and humidity culture chamber, and whether the equipment leaks. Whether it is true that fluorine and so on ask the electronic balance. . .
In addition, for the constant temperature and humidity humidifier compressor, we need to know the grinder for the grinder. The refrigerating machine oil used in the refrigeration compressor cannot be replaced by general purpose oil. In addition, for high-pressure constant temperature and humidity equipment, the compressor we usually use is screw type, mainly because the screw compressor has the best cooling efficiency when its cooling capacity is greater than 15KW. For other compressors, a vapor compression refrigeration system is also commonly used.
For more information about constant temperature and humidity culture machines, please visit: http://
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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