What are the characteristics of exhaust fans?

In daily life, we constantly need to breathe fresh air because it plays an important role in our physical health. In closed environments, exhaust fans are essential in updating the air. Let's take a closer look at what exhaust fans are and their related knowledge.

An exhaust fan, also known as a ventilation fan, is a type of air conditioning appliance that is driven by a motor to generate airflow which causes indoor and outdoor air exchange. The purpose of exhaust fans is to remove stale indoor air, regulate temperature and humidity, and maintain normal indoor air conditions.

Exhaust fans come in three types: exhaust, intake, and combined. As the names suggest, exhaust fans solely remove polluted air indoors and rely on other doors to provide fresh air. In contrast, intake fans rely only on external air flow, while combined fans feature both intake and exhaust functions.

The main function of exhaust fan vents is to allow for air intake and outtake. The ventilation duct is typically the air outlet where exhaust fans remove damp and polluted air. The bedroom and bathroom vents, on the other hand, are the air intakes.

The importance of exhaust fans in bathrooms:

a. Bathroom exhaust fans ensure that the indoor air circulates, facilitating the swift dissipation of solvents. This prevents the indoor air's solvent volume from increasing so high that it may cause explosions or poisoning.

b. Bathroom exhausts fans rely on motor-driven blades to rotate and generate air flow, exchanging indoor and outdoor air. Another term for them is ventilation fans. The purpose of exhaust fans is to remove stale air indoors, control temperature and humidity, and guarantee the feeling of good indoor air quality.

c. If bathroom exhausts fans are used in combination with water curtains, they can solve ventilation and cooling problems. The operation of bathroom exhaust fans creates negative pressure in the room, which can further enhance air convection when water curtains work. If a cooling water curtain is installed on the other side of the bathroom exhaust fan's outlet, it can take advantage of the negative pressure in the bathroom as it expels hot and humid air outdoors. The exchange of the room air occurs as cool vapor-laden air from the water curtain flows indoors to achieve the purpose of ventilation and cooling.