walk-in cooler multifunctional room
walk-in cooler multifunctional room
fan motor control When the multifunctional room is closed, the fan motor of the multifunctional room is powered off. If one of the following conditions exists, the computer board supplies power to the fan motor of the walk-in cooler multi-function room:
① The walk-in cooler power-on time is less than 1 minute;
② the compressor is running and the multi-function room solenoid valve is turned on;
③ the heating wire is energized And the power-on time exceeds 5 minutes;
④The multifunctional room is in defrosting state. The
solenoid valve controls the four bistable solenoid valves in the electrical system, which are all controlled by the computer board. Which refrigeration room requires cooling, the computer board controls the corresponding circuit to supply power to the solenoid valve of the corresponding refrigeration room, and the solenoid valve is turned on and connected. Pass the capillary tube of the refrigeration chamber. The temperature sensing and control of the refrigeration room are respectively equipped with temperature sensing heads, namely thermistors, in the refrigeration, multi-function, freezing and blast freezing rooms. As the temperature of the refrigeration room rises and falls, the resistance of the thermistor changes accordingly, making the computer board corresponding The voltage value changes accordingly, and the computer board determines the temperature of the refrigeration room based on this, and compares it with the temperature set by the user. When the comparison result is consistent, it is judged that the walk-in cooler refrigeration room has achieved the cooling effect, and then the corresponding solenoid valve is issued The power-off command causes the refrigeration room to stop cooling.
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