Control method and control device for preventing frosting of refrigeration unit in condensation dehumidification device
A refrigeration unit and control device technology, which is applied in the cooling/ventilation of substation/switchgear, panel/switch station circuit device, substation/power distribution device shell, etc., which can solve the impact of the normal operation of the dehumidification device and the safe operation of the power box Hidden dangers and other problems to achieve the effect of ensuring reliability and reducing humidity
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[0044] combined with Figures 1 to 8 The specific embodiment of the present invention is described further:
[0045] A control method for preventing frosting of a refrigerating unit in a condensation dehumidification device, comprising the following steps which are executed sequentially and cyclically:
[0046] (1) The control unit detects the ambient humidity in real time:
[0047] The ambient humidity is detected by the control unit in real time. If the ambient humidity is confirmed multiple times and exceeds the upper limit (for example, set to 75% RH), enter the next step;
[0048] (2) Start the fan of the cooling unit:
[0049] The control unit sends out a signal to start the fan of the heat dissipation unit, and the control unit judges the fan speed through the feedback detection circuit of the fan;
[0050] The fan is under the rated voltage and the rated speed is 3000r / min. If the speed is too low (less than 60% of the normal speed), it is considered that the fan is...
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