Why is the toilet turned on the exhaust fan door and closed very well

After the exhaust fan is turned on, the air in the toilet is pumped out, and the air pressure in the toilet becomes smaller than that outside the toilet, that is to say, the air pressure of the toilet in the whole home is the smallest at this time, and the air pressure in the living room and bedroom is relatively large, and the force generated by this air pressure difference acts on the door.

Suppose, just suppose, your toilet door is inwardly open, then after the exhaust fan is opened, it will be difficult to close the door if it is relatively light.

The toilet is open and the exhaust fan door is closed very because:

1. The door is open outside.

2. Because the toilet is turned on with an exhaust fan, it accelerates the air flow in the small space of the toilet, so that the outside door opens the door under the influence of a larger airflow. So, the door is very close.

Because the toilet is generally closed, the doors and windows are the air inlets, and your door just opens outward, when the exhaust fan is turned on, it is downwind when you close the door, so it is very close. If your door is opened, it will not be easy to close.

The door is not well sealed, or the power of the exhaust fan is not large enough.

Because your exhaust fan is an air outlet, the air flow is a problem. It's equivalent to your exhaust fan turning off the door. The bathroom door is connected to the bedroom door or the house door, which is equivalent to the air inlet.

Because the air flow in the room of the exhaust fan is accelerated, the indoor air pressure decreases, and the formation is that there is a relative air pressure difference between the inside and outside, that is, the outdoor air pressure is greater than the indoor air pressure, and at the same time, your door is open to the outside, and the door is naturally leaning inward under the action of the relatively large air pressure outside, so the door is closed very well.