Oven Chamber Leakage Control via Intermediary Fluid Flow

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Solution Overview

Problem

Existing ovens with separate chambers for cooking and browning often experience unstable and non-reproducible cooking processes due to unpredictable fluid leakage between the chambers.

Innovation Solution

A process that controls fluid leakage between the chambers by introducing a controlled fluid flow in the vicinity of the passage separating the chambers, allowing for adjustable volume-flow-rate and pressure to maintain stable process conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a passage is provided in the separation means for the conveyor means, then the conveyor can move from the first chamber to the second chamber, but uncontrolled leakage of process gas occurs between the chambers

Engineering Contradiction:
Improveconveyor operationVSAvoidprocess condition stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

A fluid flow is introduced as an intermediary substance into the passage to control and eliminate the leakage of process gas between chambers. The fluid flow acts as a mediator that prevents direct mixing of process gases while allowing conveyor passage.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention uses pneumatic principles by introducing a controlled fluid flow (gas or liquid) into the passage to manage the leakage problem. The fluid flow creates pressure conditions that prevent uncontrolled process gas leakage while maintaining conveyor operation.

Inventive Principle:
Principle #29Pneumatics and hydraulics

2Adaptability or versatility

If different temperature and humidity conditions are set in each chamber, then specific cooking requirements can be met, but unpredictable fluid leakage occurs between chambers

Engineering Contradiction:
Improvecooking condition controlVSAvoidcooking process reproducibility
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The fluid flow serves as an intermediary that allows different temperature and humidity conditions to be maintained in each chamber while preventing uncontrolled cross-contamination of process gases. This enables precise control of cooking conditions in each chamber independently.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention changes the parameters of the fluid flow (volume-flow-rate, pressure, composition) to control the leakage behavior. By adjusting these parameters, the system achieves both adaptability for different cooking requirements and precision for reproducible results.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If the volume-flow-rate and pressure of the fluid flow are increased to control leakage, then process fluid leakage is reduced, but energy consumption increases

Engineering Contradiction:
Improveleakage controlVSAvoidfluid flow energy
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system dynamically adjusts the volume-flow-rate and pressure of the fluid flow based on actual leakage conditions. Rather than maintaining constant high energy input, the parameters are optimized in real-time to achieve effective leakage control with minimum energy consumption.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The control system uses feedback from sensors monitoring process gas leakage to automatically adjust the fluid flow parameters. This closed-loop control ensures leakage is effectively prevented while avoiding excessive energy consumption by only using the necessary amount of fluid flow.

Inventive Principle:
Principle #23Feedback

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

This solution enables reproducible process conditions in the oven by reducing and controlling fluid leakage, ensuring consistent cooking results and easy operation.

Implementation Method 1

Due to the introduction of the fluid flow, the pressure in the vicinity of the passage is preferably higher than the pressure in the first- and/or the second chamber, respectively, so that no leakage of process fluid out of one of chambers to the other chamber occurs.

Methodology Applied
Scientific EffectPressure: Pressure Increase

Data Source

PatentEP3335564B2Process to control the air-flow and air-leakages between two chambers
Publication Date: 2025.06.11 GEA FOOD SOLUTIONS BAKEL BV
  • EP3335564B2 patent drawingFigure 1
  • EP3335564B2 patent drawingFigure 2
  • EP3335564B2 patent drawingFigure 3

AI summary

The present invention relates to an oven comprising: - a first chamber and a second chambers, which are separated by separation means - conveyor means for guiding products from the inlet through these chambers to the outlet, - temperature control means for controlling the temperature and/or humidity in each chamber individually using a fluid, respectively, and - a passage in the separation means through which the conveyor means are directed from the first chamber to the second chamber.