Control method, control device and control system for initial opening degree of electronic expansion valve
An electronic expansion valve, control method technology, applied in heating and ventilation control systems, heating and ventilation safety systems, refrigerators, etc., can solve the problem of high unit heating pressure, unfavorable compressor reliability, compressor oil temperature superheat Problems such as long establishment time to achieve the effect of ensuring pressure unloading and ensuring reliable operation
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[0015] Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.
[0016] Such as figure 1 As shown, according to the method for controlling the initial opening of an electronic expansion valve of the present invention, the method includes: Step S1: detecting the ambient temperature T; Step S2: calculating the P value corresponding to the ambient temperature T according to the preset PT relationship; Step S3: Move the electronic expansion valve to the corresponding P value. That is, the present invention calculates the initial opening degree P value of the electronic expansion valve by detecting the outdoor environment temperature T and according to the preset PT relationship. That is, in the present invention, the detected outdoor environment temperature determines the initial opening of the electronic expansion valve. Before starting up, by collecting the outdoor ambient temperature T of the temperatur...
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