What is the function of the round cap device at the top of the residential building?

The dome device at the top of this building is scientifically called unpowered range hood, which is used to keep the indoor air fresh, keep the roof dry and not wet, and can also remove hot air, so as to achieve the effect of turning on the air conditioner without electricity. Save electricity, avoid noise and maintenance.

The life of this kind of ventilation device is generally as long as 15 years, and the cost is not small except for the electricity and maintenance costs of 15 years. The inventor of unpowered range hood really brought economy and convenience to people's lives! Moreover, the surface of the unpowered range hood is made of stainless steel, which can prevent corrosion, and its design also has the effects of anti-wind, waterproof, fire prevention and foreign body prevention. Even after the service life, it will not pollute the environment, can be recycled and is a very good environmental protection material.

The unpowered range hood also has a very important function, which is the safety function. As we all know, in the fire, most people are not burned to death, but suffocated by smoke. When there is a fire in the area where the unpowered range hood is installed, the hot air and smoke from the inside out will accelerate the rotation of the fan blades of the unpowered range hood, so that a large amount of smoke can be discharged quickly, creating precious time for the survivors, ensuring their lives to the greatest extent and minimizing losses.

Generally, unpowered range hoods have different sizes, and the price ranges from tens to hundreds of yuan. The installation is extremely simple, and the installation cost is almost negligible. After calculating the service life and cost savings, as well as the convenience and safety brought to people's lives, it is very necessary to install this new type of ventilation device. I hope the unpowered range hood can bring you a better experience!