| 摘要 |
An air exchange system places the air pumps or fans outside of the main air outflow pathway through a device, such as a range hood. By using this configuration, the system is made safe, easy to maintain with less noise and may even increase the efficiency of the air pump by not subjecting it to debris, particles or turbulence in the air flow, also flexible to add more pumps with significant increase the size of the air exchange system. Air pumps can be operably connected to push air into two or more air reservoirs. Each air reservoir has a narrow air outlet slit along with a Coanda design. When air comes out of the narrow air outlet, it has high speed and generates a negative pressure due to the Bernoulli effect. Such negative pressure will bring more air around into the air flow system, thus causing a desired air exchange. |
