System comprising a cooking device with a cooking oven and an extractor hood, and method for operating the system
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Solution Overview
Problem
Existing cooking systems with a cooking chamber and vapor extraction device struggle to efficiently remove disruptive vapors and odors while minimizing energy consumption and noise, especially during pyrolysis operations, which often require prolonged ventilation.
Innovation Solution
The system employs an automatic stepwise operation of the extractor fan with multiple speed stages, allowing for adaptive extraction performance based on the cooking appliance's state and sensor measurements, including a pre-run, main operation, and post-run phases, to effectively manage odor removal during pyrolysis processes without user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the extractor fan operates at high speed continuously to remove odors during pyrolysis, then odor removal efficiency is improved, but energy consumption and noise increase
Solution Approach 1:
The extractor fan speed is made dynamically adjustable through multiple operating stages (first stage with first speed, second stage with second speed) rather than running at constant high speed. The control device automatically switches between speeds based on pyrolysis progress, maintaining high extraction efficiency when needed while reducing energy consumption during less demanding phases.
Solution Approach 2:
The extraction process is divided into periodic stages with different speed profiles. The first stage operates at a higher speed for initial odor removal, then transitions to a second stage with reduced speed for continued extraction. This periodic variation in operation maintains effectiveness while reducing overall energy consumption and noise exposure.
2Productivity
If the extractor fan operates at high speed continuously to remove odors during pyrolysis, then odor removal efficiency is improved, but noise emissions increase
Solution Approach 1:
The extractor fan speed is dynamically adjusted through multiple stages, operating at higher speed only when necessary for effective odor removal during active pyrolysis, then reducing to lower speeds or stopping when odor generation decreases. This dynamic adjustment maintains productivity while significantly reducing noise emissions during less demanding operational phases.
Solution Approach 2:
The extraction system operates in periodic cycles with varying intensity levels. High-speed operation is confined to specific periods when odor removal is most critical, followed by lower-speed or idle periods. This periodic action pattern ensures odor removal efficiency during active pyrolysis while minimizing noise pollution during transitional and completion phases.
3Ease of operation
If manual control of the extractor fan is used, then user control over ventilation is improved, but user convenience decreases due to required intervention
Solution Approach 1:
The control device receives feedback from sensors monitoring pyrolysis conditions (temperature, time, odor levels) and automatically adjusts extractor fan operation accordingly. This feedback mechanism enables the system to autonomously optimize ventilation performance based on actual pyrolysis progress, eliminating the need for manual user intervention while maintaining effective odor removal.
Solution Approach 2:
The extraction system is designed to self-regulate based on pyrolysis state. The control device automatically determines when to activate, what speed to use, and when to deactivate the extractor fan by monitoring pyrolysis parameters. This self-service capability provides full automation while maintaining optimal ventilation performance, improving ease of operation by completely removing manual control requirements.
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 ensures efficient and quiet odor removal with minimal energy consumption, maintaining user convenience by automatically adjusting extraction performance to match operational needs, reducing odor nuisance during pyrolysis without the need for prolonged ventilation.
Implementation Method 1
an extractor device with an extractor device control for activating an extractor fan for sucking off a fluid escaping from the cooking chamber
Implementation Method 2
a cooking appliance control for activating at least one heating device of the cooking appliance for heating the cooking chamber
Implementation Method 3
The cooking appliance with a cooking space can be designed, for example, as an oven, a steam cooker, a microwave oven or a combination appliance with a plurality of different heating devices. According to the invention, the cooking appliance has a pyrolysis operating mode for cleaning its cooking chamber.
Data Source
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AI summary
The invention relates to a system (2) comprising a cooking appliance (4) with a cooking chamber and a cooking appliance control unit for controlling at least one heating device of the cooking appliance (4) for heating the cooking chamber, and a ventilation device (6) with a ventilation device control unit for controlling a ventilation device fan for extracting fluid escaping from the cooking chamber, wherein the ventilation device control unit is directly or indirectly connected to the cooking appliance control unit and/or to at least one sensor of the system (2) via signal transmission, and wherein the ventilation device fan can be controlled depending on an operating state of the cooking appliance (4) and/or at least one measured value of the sensor, characterized in that the system (2) is designed and configured such that this control of the ventilation device fan is designed as an automatic, staged operation of the ventilation device fan.wherein the staged operation comprises at least a first stage with a corresponding first speed of the extractor fan and a second stage immediately following the first stage with a corresponding second speed of the extractor fan. Furthermore, the invention relates to a method for operating a system (2).