Control method of electronic expansion valve of automobile air conditioner system
An automotive air-conditioning system and electronic expansion valve technology, which is applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problem of motor overheating or overcurrent, electronic expansion valve operation failure, propose solutions, affect the energy-saving control accuracy of the air-conditioning system, etc. problems, to achieve the effect of avoiding over-frequency action, avoiding damage to refrigeration system equipment, and improving safety and reliability
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[0072] Compared with the fourth embodiment, this solution has two optimizations.
[0073] First, perform step S02 before performing step S41: on the condition that the speed of the compressor satisfies the second length of time in the corresponding operating interval, perform step S41, and determine the opening of the electronic expansion valve according to the speed of the compressor. Pre-adjustment s 0 .
[0074] As mentioned above, the speed of the compressor may change at any time due to some reasons. In order to avoid the excessively fast action of the expansion valve, the control is too frequent and the low pressure of the system fluctuates too much. Therefore, compared with the first embodiment, this The additional step S02 of the plan can avoid the frequent action of the electronic expansion valve caused by the fluctuation of the compressor speed, which makes the system fluctuate too much, thereby effectively improving the energy efficiency of the system; that is, only when...
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