Patent ID: 9091260
Filing Date: 2015-07-28
Classification: F04B

Abstract:
1. A miniature pump comprising: a driving unit; and an airflow control unit driven by the driving unit to force fluid to be input or output through the airflow control unit, wherein the airflow control unit comprises: a bladder supporter having a plurality of intake through holes; a compression unit having a plurality of intake valves and a plurality of bladders, each intake valve covering the corresponding intake through hole, each intake through hole is surrounded by a circular wall, wherein the circular wall is in contact with a bottom surface of the corresponding intake valve, the circular wall occupying an area of the bottom surface of the corresponding intake valve, which is smaller than a total area of the bottom surface of the corresponding intake valve; a valve base disposed over the compression unit, the valve base having a plurality of output through holes aligned with the bladders respectively; and an output valve covering the output through holes, wherein the valve base has a plurality of bladder sections aligned with the bladders respectively, each bladder section has an isolation wall around thereof, and any adjacent two of the isolation walls define an air channel therebetween, the valve base further comprises at least one air chamber, and each air chamber is connected with a corresponding one of the air channel, a top cover disposed over the valve base, the top cover having a central air outlet, all the air channels are connected to a central area of the valve base, which is aligned with the central air outlet, when the bladder is compressed, air inside the bladder is output via the output through hole and the output valve, when the bladder is decompressed, external air is introduced into the bladder via the intake through hole and the intake valve.