Patent ID: 9732743
Date: 2017-08-15
CPC Classifications: F04B

Claim:
1. A pneumatic micropump comprising: a fluidic channel layer comprising a fluid inlet, a fluid outlet and a reservoir, wherein a fluid passes through the fluid inlet, the reservoir and the fluid outlet, successively; an upper substrate comprising an upper pneumatic chamber facing the reservoir; a lower substrate comprising a lower pneumatic chamber facing the reservoir, wherein the reservoir has a through hole penetrating an upper surface and a lower surface of the fluidic channel layer, and the through hole is arranged along an axis that passes through a center of the upper pneumatic chamber; an upper membrane disposed between the upper pneumatic chamber and the reservoir; and a lower membrane disposed between the lower pneumatic chamber and the reservoir; a valve disposed in the fluid inlet or the fluid outlet; wherein the upper membrane and the lower membrane are independently actuated by the upper pneumatic chamber and the lower pneumatic chamber; wherein the valve includes an embossed structure formed on a side wall of the fluid inlet or the fluid outlet, and a flap abutting the embossed structure in a separable manner.