Abstract
In order to explore the axial electromagnetic dynamic balance force curve of a scroll compressor under the action of thermal energy, radial clearance, mechanism friction, and other factors in actual working conditions, an axial force exploration method that can automatically approach sections is proposed in this paper. Considering the dynamic response ability of the electromagnetic balance system, an automatic optimization algorithm of the partition number was proposed to find the optimal partition number in order to achieve the optimal tracking effect. An experimental platform was built to test the effect of the segmented tracking method on calibrating the deviation between the theoretical axial force curve and the real curve. The results show that the curve construction method proposed in this paper has convergence. This method can automatically and accurately construct the axial balance force curve required by the electromagnetic dynamic balance. Through the automatic optimization algorithm, the standard error (RMSE) between the target curve and the theoretical curve was reduced from 290 to 22.6, and the number of partitions with the lowest standard error was 20. The results provide a useful reference for the accurate, automatic, and efficient exploration of the actual axial sealing force of the scroll compressor.
Highlights
The scroll compressor is a high-efficiency positive displacement compressor that has characteristics such as a compact structure, stable operation, and low noise
In order to solve the above problems, this paper proposes a piecewise approximation tracking method to directly study the tracking of the scroll compressor in the target state, which can automatically, quickly, and accurately obtain the actual axial target force curve
It can be clearly seen from the figure that the electromagnetic force output curve and the actual axial force curve closely fit
Summary
The scroll compressor is a high-efficiency positive displacement compressor that has characteristics such as a compact structure, stable operation, and low noise. Radial leakage occurs through the axial clearance between the tip of the involute and the opposite scroll base This gap causes the leakage of gas from the high-pressure chambers to the low-pressure chambers, which reduces the exhaust pressure and the repeated compression of the gas, reducing the working efficiency of the scroll compressor. The mechanism can generate dynamic electromagnetic force through the PID control method, which is used to solve the problem of radial leakage during the operation of the scroll machine and realize oil-free sealing. Is the axial gas force curve estimated by the scroll model theory, and the tangential interleakage, gap leakage between structures, heat energy, and friction between transmission mechanisms during the actual operation of the scroll machine, affects the air pressure and its geometric area in the air pressure chamber. This provides power for the further development of subsequent scroll compressors
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