Negative pressure fan ventilation principle:

    The negative pressure fan and the environmentally-friendly air conditioner discharge air outward to lower the indoor air pressure, and the indoor air becomes thinner, forming a negative pressure zone, and the air flows into the room due to the air pressure difference. In the practical application of industrial plants, the negative pressure fan is concentrated on one side of the plant, the air inlet is on the other side of the plant, and the air is convectively blown from the air inlet to the negative pressure fan. In this process, the doors and windows adjacent to the negative pressure fan are kept closed, and the air is forced to flow into the workshop by the door and window on the side of the air inlet. The air is lined up in an orderly flow from the air inlet to the workshop, flowing through the workshop, and discharged from the workshop by a negative pressure fan. The ventilation is complete and efficient, and the ventilation rate can be as high as 99%. After detailed engineering design, designing ventilation speed and wind speed according to requirements, any high heat, harmful gas, dust and smoke can be quickly discharged into the workshop, and any problem of poor ventilation can be completely solved at one time. The ventilation effect can be reached within a few seconds from the opening of the fan. Ningbo City Air Cooler, Ningbo Air Cooler

Negative pressure fan cooling principle:

    First, ventilation and cooling: Because the sun shines on buildings, machinery and equipment, human body and other heat sources, the temperature is higher than the outdoor. The negative pressure fan can discharge the indoor hot air agilely, so that the ambient temperature at room temperature is equal, and the temperature in the workshop is not increased.

    Second, the air activity takes away the body heat, the air activity accelerates the transpiration of the sweat and absorbs the body heat, and then the body feels cool, and the natural wind is as cool as the natural wind.

    Third, the negative pressure fan only has the effect of cooling and cooling, there is no function of refrigeration, cool is the human body's feelings. The argument that the negative pressure fan can drop the temperature is unscientific.

    Fourth, in cooperation with the water curtain, the temperature in the workshop can be controlled within 28 degrees Celsius during the hottest hours in summer. However, the cool feeling of the human body can be compared with the air conditioner. Those who are facing the water curtain for a long time will feel cold and can't stand it.