Miniature cooling system

A miniature cooling system, comprising:

• a base metal sheet;
• a flow channel layer, located on the base metal sheet, wherein the flow channel layer comprises:
• a first chamber;
• a second chamber;
• an inlet channel, linking the outside environment to the first chamber;
• a linking channel, linking the first chamber and the second chamber;
• and
• an outlet channel, linking the second chamber to the outside environment,
• wherein the outlet channel is shaped as a funnel, the outlet channel has an inner size and an outlet size, and the inner size is smaller than the outlet size;
• a piezoelectrically actuated metal sheet, located on the flow channel layer;
• a piezoelectric boundary compression layer, located on the piezoelectrically actuated metal sheet, wherein the piezoelectric boundary compression layer comprises two containing areas, and the two containing areas are respectively located above the first chamber and the second chamber;
• and
• two piezoelectric ceramic vibrators, each respectively located in the two containing areas and respectively aligned with the centers of the two containing areas, and located on the piezoelectrically actuated metal sheet.