Abstract
A piezo pump for use in a pressurized circuit includes a pump chamber with an inlet provided with a one way inlet valve, for connection to a feeding line of the pressurized circuit and an outlet provided with a one way outlet valve, for connection to a discharge line of the pressurized circuit and a piezo pump diaphragm closing one end of the pump chamber. A pressure chamber, which can function as a second pump chamber if desired, is defined at the side of the piezo pump diaphragm facing away from the pump chamber, wherein said pressure chamber is connected to a pressure source, which may be the feeding line.
| Original language | English |
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| Patent number | US2015292497 |
| IPC | F04B 45/ 047 A I |
| Priority date | 10/04/14 |
| Publication status | Published - 15 Oct 2015 |