The ventilation principle of negative pressure fan

There are many models of fans, and the advantages of negative pressure fans are stable operation, long life, large air volume, low noise, high efficiency, etc. The editor will not list them one by one. What kind of working principle does it have?

The ventilation principle of the negative pressure fan:

The negative pressure fan exhausts air to the outside, thins the indoor air to form a negative pressure area, and the fresh air from the other side of the outdoor naturally flows into the room, bringing fresh air to the room. According to the specific engineering design, any heat in the room , harmful gases, dust, etc. can be excluded from the outdoors, the ventilation rate is as high as 99%, and the ventilation effect can be achieved within a few seconds of turning on the fan.

The cooling principle of the negative pressure fan:

In hot summer, when the sun shines on buildings or mechanical equipment, the indoor temperature is often higher than the outdoor temperature. The negative pressure fan can quickly remove the heat, the air flow takes away the heat of the human body, and the air flow accelerates the evaporation of sweat It absorbs the body's heat and makes people feel naturally cool.

The investment cost of the negative pressure fan is still relatively low, and the stability in operation is also praised by people. Therefore, the future development of the negative pressure fan is also bright, and it will eventually become one of the mainstream fans for cooling and ventilation.