Method and steaming oven and collector plate
View Patent ↗A steaming oven having a collector plate disposed in an oven chamber. A collector plate is disposed above a boiling water reservoir in the oven chamber. The collector plate has a drain tube inserted into an overfill tube. Waste material from the steam and food droppings is conveyed from the oven chamber via the drain tube and the overfill tube. A barrier shields one or more water level probes or sensors from water turbulence, thereby providing reliable water level sensing by the water level probes or sensors.
1. A steaming oven comprising:
an oven chamber;
a water reservoir disposed within and adjacent a bottom of said oven chamber to provide steam that rises upwardly from said water reservoir within said oven chamber;
a collector plate shorter in width and length than said water reservoir to form a passage as a border between said collector plate and a perimeter of said reservoir through which said steam rises upwardly within said oven chamber;
at least one water level sensor located to sense a water level in said water reservoir; and
a barrier located at least partially in said water reservoir to provide a quiet zone where said water level sensor senses said water level, wherein said water level is stabilized in said quiet zone despite water turbulence outside said quiet zone.
2. The steaming oven of claim 1 , wherein said barrier comprises a wall that extends at least partially below said water level.
3. The steaming oven of claim 1 , wherein said barrier is a single unitary piece.
4. The steaming oven of claim 1 , wherein said water level sensor is located near a front of said oven chamber.
5. The steaming oven of claim 1 , wherein said water level sensor is located at an edge of said water reservoir.
6. The steaming oven of claim 1 , wherein said barrier comprises at least a first portion that is located to one side of said water level sensor and that is shaped to provide shielding from said water turbulence.
7. The steaming oven of claim 6 , wherein said barrier further comprises at least a second portion that is located to an opposite side of said sensor to provide additional shielding from said water turbulence.
8. A method of providing steam in a steaming oven chamber comprising:
providing said steam from a water reservoir disposed within and adjacent a bottom of said oven chamber, wherein said steam rises within said oven chamber upwardly from said water reservoir via a passage between a collector plate and a perimeter of said reservoir;
sensing a water level in said water reservoir with at least one water level sensor; and
shielding said water level sensor from water turbulence in said water reservoir, thereby providing a sensed water level without substantial interference from said water turbulence.
9. The method of claim 8 , wherein said shielding step shields said water level sensor with a barrier.
10. The method of claim 9 , wherein said barrier comprises a wall that extends at least partially below said water level.
11. The method of claim 8 , wherein said water level sensor is located near a front of said oven chamber.
12. The method of claim 8 , wherein said water level sensor is located at an edge of said water reservoir.
13. The method of claim 9 , wherein said barrier comprises at least a first portion that is located to one side of said water level sensor and that is shaped to provide shielding from said water turbulence.
14. The method of claim 13 , wherein said barrier further comprises at least a second portion that is located to an opposite side of said sensor to provide additional shielding from said water turbulence.
15. The method of claim 8 , further comprising:
heating water in said reservoir with a heater located outside said oven chamber and below said water reservoir.
16. The steaming oven of claim 1 , further comprising:
a heater that is located outside said oven chamber and below said water reservoir and that heats water in said reservoir.