Steam-Generator Siphon Design for Passive Water-Level Control in Ovens
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Solution Overview
Problem
Existing steam-generating devices for domestic ovens are costly due to complex systems required for pressure gradients, and they necessitate different cleaning pressure gradients, making maintenance challenging.
Innovation Solution
A steam-generating device with a siphon mechanism that maintains the nominal-fill-level without active control, allowing for passive cleaning by exceeding the siphon-level, and an active inlet-valve for adjustable water supply, reducing the need for pumps and complex pressure management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex pressure gradient system is used to supply water to the steam-generator, then water supply reliability is improved, but device complexity and cost increase
Solution Approach 1:
The siphon mechanism enables the system to automatically regulate water level and discharge water without external control systems. The siphon self-activates when water reaches a certain level and automatically stops when the water level drops, eliminating the need for complex electronic level sensors and control valves while maintaining reliable water supply to the steam-generator.
Solution Approach 2:
The invention employs a siphon-based hydraulic system to control water flow and level regulation. By utilizing the siphon effect (a hydraulic principle), the system achieves automatic water level control and discharge without mechanical pumps or electronic actuators, significantly simplifying the overall system architecture while ensuring reliable water supply.
2Measurement precision
If active control systems are used to maintain water level, then water level precision is improved, but energy consumption and operational complexity increase
Solution Approach 1:
The siphon mechanism provides passive, energy-free water level control. The siphon automatically activates when water reaches the siphon inlet level and stops when the water level drops below the siphon inlet, maintaining precise water level without consuming electrical energy. This eliminates the need for powered pumps, valves, and control systems while achieving reliable level precision.
Solution Approach 2:
The invention replaces active electronic control systems with a passive hydraulic siphon mechanism. The siphon effect naturally regulates water level through hydraulic principles alone, substituting complex electronic level sensors, control algorithms, and powered actuators with a simple hydraulic structure that consumes no energy while maintaining precise water level control.
3Reliability
If complex pressure management systems are used for cleaning, then cleaning effectiveness is improved, but ease of operation deteriorates
Solution Approach 1:
The siphon mechanism enables automatic water discharge during cleaning operations. When cleaning fluid or waste water reaches the siphon inlet level, the siphon automatically activates and discharges the fluid without requiring manual intervention or complex pressure control systems. This simplifies maintenance operations while ensuring effective removal of limescale and debris through adequate water flow.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables cost-effective operation with simplified maintenance by maintaining the nominal-fill-level and facilitating passive cleaning, reducing energy consumption and operational complexity.
Implementation Method 1
a siphon with a fixed siphon-level is also provided upstream of the water-outlet, the siphon-level being arranged at least at or above the nominal-fill-level of the precipitator and the steam-generator
Implementation Method 2
a steam-generator arranged to be fed with water from the water-source and arranged to generate steam
Implementation Method 3
a steam-generator arranged to be fed with water from the water-source and arranged to generate steam
Implementation Method 4
the precipitator has labyrinth-like walls in an installed domestic oven in the earth-gravity-field in relation to the effect of gravity on the vapour-like water, to which liquid water or water droplets can adhere and (at least collectively) drip off
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to A steam-generating-device (1) for a domestic oven (2), comprising at least the following components: - a water-source (3); - a steam-generator (4) arranged to be fed with water from the water-source (3) and arranged to generate steam; - a precipitator (5) for condensed water from the steam of the steam-generator (4); - a water-outlet (6) for discharging water from the precipitator (5) and/or the steam generator (4), the steam-generator (4) and the precipitator (5) having a nominal-fill-level (7) for liquid water during operation. A siphon (8) with a fixed siphon-level (9) is also provided upstream of the water-outlet (6), the siphon-level (9) being arranged at least at or above the nominal-fill-level (7) of the precipitator (5) and the steam-generator (4) when a domestic oven (2) is installed in the earth-gravity-field (10). The steam-generating-device proposed here enables particularly simple and cost-effective operation.