Temperature and humidity automatic control device for cloth filter control cabinet

The utility model discloses a temperature and humidity automatic control device for a cloth filter control cabinet, and overcomes the problem that the electrical operation safety is affected due to too high temperature and humidity of the control cabinet in the prior art. The temperature and humidity automatic control device comprises a PLC controller, sensors, an intermediate relay, an AC contactor, a thermal relay, an electric device, an indicating device, a heater and a display device, wherein analog quantity output signals of the sensors are connected with input terminals and PLC analog quantity input terminals of the display device; and a switching value output signal of the PLC controller is connected with a coil of the intermediate relay, the coil of the intermediate relay is serially connected in a coil of an alarm device, the indicating device and the AC contactor, a main contact of the AC contactor is serially connected in a power supply loop of the electric device, and the main contact of the AC contactor is serially connected in a power supply loop of the electric device and the heater. The temperature and humidity automatic control device is simple in structure and high in safety, and can effectively eliminate the potential safety hazard.