Liquid pumping device comprising a gear pump for beverage dispenser
A liquid pumping device ( 1 ) for beverage dispenser comprising: -a housing ( 2 ) with a liquid inlet ( 3 ) and a liquid outlet ( 4 ); -a gear pump ( 5 ) positioned in the housing with the liquid inlet communicating with the gear pump; wherein a flowmeter ( 6 ) is fluidly positioned in the housing ( 2 ) preferably between the gear pump ( 5 ) and the liquid outlet ( 4 ).
1. A liquid pumping device for a beverage dispenser, the liquid pumping device comprising:
a housing with a liquid inlet and a liquid outlet;
a gear pump positioned in the housing with the liquid inlet communicating with the gear pump, wherein the gear pump comprises a driving shaft arranged to protrude from a first side of the housing; and
a flowmeter fluidly positioned in the housing, the flowmeter comprises a measuring member rotatable by the a liquid flow passing through the flowmeter, the flowmeter further comprises a sensor for sensing a rotation-related parameter of the measuring member, and the sensor is positioned on a second side of the housing opposed to the first side.
2. The liquid pumping device according to claim 1 , comprising an electrical rotary motor connected to the driving shaft.
3. The liquid pumping device according to claim 1 , wherein the gear pump is configured to communicate with the flowmeter in the housing by a non-deformable intermediate conduit.
4. The liquid pumping device according to claim 3 , wherein the non-deformable intermediate conduit extends in an axial direction perpendicular to a plane of extension the gear pump extends in.
5. The liquid pumping device according to claim 1 , wherein the measuring member has a rotation bearing arranged in the same axial direction as an axial direction of a driving shaft of the gear pump.
6. The liquid pumping device according to claim 1 , wherein the measuring device comprises at least one magnet, and the sensor is a Hall sensor.
7. The liquid pumping device according to claim 1 , wherein the sensor senses a rotation-related parameter by a characteristic selected from the group consisting of induction, capacitive effect, ultrasounds, and infra-red.