Magnetic levitation chiller and its control method
A technology for a chiller and a control method, applied in refrigerators, refrigeration components, compressors, etc., can solve problems such as damage to the centrifugal impeller of a maglev compressor, deviation of the maglev bearing system, and compressor protection, so as to eliminate the risk of damage and reduce the risk of damage. Volatility, the effect of increasing the cooling capacity
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Embodiment 1
[0029]The maglev chiller includes a shell-and-tube condenser 2, a flooded evaporator 3 and a maglev compressor 1. The maglev compressor 1 is provided with a connection port 1-2, an air return port 1-3 and a liquid inlet 1-4, the connecting port 1-2 of the magnetic levitation compressor 1 is connected to the shell-and-tube condenser 2 with the connecting pipe 1-5, and the lower end of the shell-and-tube condenser 2 is provided with a liquid outlet 8 and a liquid return port 9, A fluorine pump 5 is connected to the liquid return port 9, the fluorine pump 5 is connected to the air return port 1-3 of the magnetic levitation compressor 1, the liquid outlet 8 is connected to a drying cylinder 6, and the drying cylinder 6 is connected to an electronic The expansion valve 7 and the electronic expansion valve 7 are connected to the refrigerant liquid inlet 3-4 provided at the lower end of the flooded evaporator 3, and the upper end of the flooded evaporator 3 is provided with a suction ...
Embodiment 2
[0033] During use, the magnetic levitation compressor 1 is equipped with an inverter, and the inverter is equipped with a temperature sensor. The temperature set by the temperature sensor is 45°C. When the temperature inside the magnetic levitation compressor 1 exceeds 45°C, the magnetic levitation compressor 1 is turned on. Built-in cooling solenoid valve, due to the internal and external pressure difference, the liquid refrigerant in the shell-and-tube condenser 2 flows into the connection port 1-3 from the connection pipe 1-5, and is supplied to the inside of the magnetic levitation compressor 1 from the connection port 1-3. The liquid refrigerant cools the internal electronic components of the maglev compressor 1 to lower the temperature; when operating at low ambient temperature, the pressure difference becomes smaller, and the temperature will rise when the liquid refrigerant supply is insufficient or the liquid supply is insufficient. When the temperature is higher than 5...
Embodiment 3
[0035] On the basis of Embodiment 1, the flooded evaporator 3 is also provided with a ball float type liquid level sensor 10, and one end of the ball float type liquid level sensor 10 is arranged on the air equalizing plate 3-6 and the air suction plate 3-6. In the gap between the baffles 3-7, the other end of the float type liquid level sensor 10 is set in the gap in the anti-corrosion internal and external threaded heat exchange tube 3-3, or only two of them can be inserted in the upper and lower parts respectively , only need to measure the accurate liquid level. The float type liquid level sensor 10 can detect the liquid level inside the flooded evaporator 3, and the float type liquid level sensor 10 transmits the detected data to the control system. Generally, the liquid is controlled in the gas equalizing plate 3- Below 6, the liquid level at this position is at a safe and high-efficiency heat exchange liquid level, the liquid level is just enough to soak the heat exchan...
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