Microwave oven with water feeding system
A domestic microwave oven is provided having an oven cavity, a water reservoir, a piping system coupling the reservoir and the oven cavity, and a pump for pumping a predetermined amount of water into the oven cavity. The pump is a mono-directional positive displacement pump and the piping system includes a by-pass coupled in parallel to the pump and an on/off electro valve configured to allow a drainage of the piping system when the pump is idle.
1. A domestic oven comprising:
an oven cavity;
a water reservoir;
a piping system coupling the water reservoir and the oven cavity; and
a pump for pumping a predetermined amount of water into the oven cavity;
wherein the pump is a mono-directional positive displacement pump and the piping system comprises a by-pass line coupled in parallel to the pump and an on/off electro valve configured to allow a drainage of the piping system through the by-pass line when the pump is idle.
2. The domestic oven of claim 1 , wherein the pump is a vibration pump or a diaphragm pump.
3. The domestic oven of claim 1 , wherein the water reservoir is shaped as a drawer configured to be inserted in a seat below the oven cavity.
4. The domestic oven of claim 3 , wherein the piping system comprises an automatic valve which is in an open configuration when the water reservoir is inserted into the seat.
5. The domestic oven of claim 1 , wherein the pump and the on/off electro valve are coupled to a control unit.
6. The domestic oven of claim 1 , wherein the domestic oven is a microwave oven.
7. The domestic oven of claim 1 , wherein the piping system comprises a flow meter.
8. The domestic oven of claim 7 , wherein the flow meter is coupled downstream from the pump.
9. The domestic oven of claim 7 , wherein the flow meter is electrically coupled to a control unit.
10. A microwave oven comprising:
an oven cavity;
a water reservoir;
a piping system coupling the water reservoir and the oven cavity; and
a pump for pumping a predetermined amount of water into the oven cavity;
wherein the pump is a mono-directional positive displacement pump and the piping system comprises a by-pass line coupled in parallel to the pump and an on/off electro valve configured to allow a drainage of the piping system through the by-pass line when the pump is idle; and
wherein the pump and the on/off electro valve are coupled to a control unit.
11. The microwave oven of claim 10 , wherein the pump is a vibration pump or a diaphragm pump.
12. The microwave oven of claim 10 , wherein the water reservoir is shaped as a drawer configured to be inserted in a seat below the oven cavity.
13. The microwave oven of claim 12 , wherein the piping system comprises an automatic valve which is in an open configuration when the water reservoir is inserted into the seat.
14. The microwave oven of claim 10 , wherein the piping system comprises a flow meter.
15. The microwave oven of claim 14 , wherein the flow meter is coupled downstream from the pump.
16. The microwave oven of claim 14 , wherein the flow meter is electrically coupled to the control unit.
17. A microwave oven comprising:
an oven cavity;
a water reservoir;
a piping system coupling the water reservoir and the oven cavity; and
a diaphragm pump for pumping a predetermined amount of water into the oven cavity;
wherein the diaphragm pump is a mono-directional positive displacement pump and the piping system comprises a by-pass line coupled in parallel to the diaphragm pump and an on/off electro valve configured to allow a drainage of the piping system through the by-pass line when the diaphragm pump is idle; and
wherein the piping system comprises a flow meter electrically coupled to a control unit and the flow meter is coupled downstream from the diaphragm pump; and
wherein the by-pass line is configured to allow a drainage of the piping system to the water reservoir when the diaphragm pump is idle.
18. The microwave oven of claim 17 , wherein the water reservoir is shaped as a drawer configured to be inserted in a seat below the oven cavity.
19. The microwave oven of claim 18 , wherein the piping system comprises an automatic valve which is in an open configuration when the water reservoir is inserted into the seat.
20. The microwave oven of claim 17 , wherein the pump and the on/off electro valve are coupled to the control unit.