Steam cooking appliance
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Solution Overview
Problem
Existing cooking appliances lack efficient methods for controlling temperature and steam generation during steam cooking operations, leading to suboptimal cooking results and safety concerns.
Innovation Solution
A cooking appliance with a convection heating system, a reservoir heating system, and a control system that allows for selective access to a water reservoir, enabling precise temperature regulation and steam generation within the oven cavity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a water reservoir is made accessible from within the oven cavity for steam cooking, then steam generation capability is improved, but risk of scalding and safety hazards worsen
Solution Approach 1:
A dispensing valve acts as an intermediary between the water reservoir and the oven cavity, controlling steam release automatically. The valve opens at predetermined intervals to dispense steam without requiring direct user access to the hot water reservoir, thereby maintaining steam generation capability while eliminating scalding risks from manual intervention.
2Ease of operation
If temperature regulation during steam cooking is manually controlled, then operational simplicity is improved, but temperature precision and cooking consistency worsen
Solution Approach 1:
A temperature sensor continuously monitors the oven cavity temperature and provides feedback to the controller. The controller automatically adjusts the heating element power and steam dispensing timing based on this feedback, achieving precise temperature regulation during steam cooking without requiring complex manual control from the user.
Solution Approach 2:
The system performs self-regulation of temperature through automatic control algorithms that adjust heating and steam dispensing based on real-time temperature measurements. This eliminates the need for manual temperature adjustment while maintaining high precision, allowing users to simply select steam cooking mode without dealing with temperature controls.
3Adaptability or versatility
If separate heating systems are used for convection and steam generation, then functional versatility is improved, but device complexity and energy efficiency worsen
Solution Approach 1:
A single heating element serves multiple functions: it operates as a convection heater for dry cooking modes and as a steam generator when water is introduced into the oven cavity. The controller distinguishes between cooking modes and directs the heating element's function accordingly, eliminating the need for separate heating systems while maintaining full versatility across convection, steam, and combination cooking modes.
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
The appliance efficiently regulates air temperature and generates steam, improving cooking outcomes while reducing the risk of scalding and allowing for versatile cooking modes like steam, convection, and baking.
Implementation Method 1
The reservoir heating system is configured to heat water in the reservoir in order to generate steam
Implementation Method 2
The convection heating system includes a convection heating element and a fan for guiding air across the convection heating element
Implementation Method 3
operating a convection heating system to regulate the temperature of air within an oven cavity of the appliance
Data Source
AI summary
A cooking appliance includes a cooking chamber that defines an oven cavity and a reservoir for holding water that is accessible from within the oven cavity. The cooking appliance further includes a convection heating system, a reservoir heating system, and a control system. The convection heating system includes a convection heating element and a fan for guiding air across the convection heating element. The reservoir heating system includes at least one reservoir heating element. The control system is configured to control the convection heating system and the reservoir heating system to perform a steam cooking operation in response to a user steam-cooking input.