Rice Cooker Steaming System
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Solution Overview
Problem
Conventional rice cookers maintain high carbohydrate levels in cooked rice due to constant return of water vapor and dissolved carbohydrates, limiting food capacity and cooking flexibility.
Innovation Solution
A separable insert for rice cookers with two components, capturing water vapor and dissolved carbohydrates in a reservoir during the cooking process, allowing for low-carb cooking or conventional cooking with an elevated shelf for concurrent food preparation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If water vapor and dissolved carbohydrate are constantly returned to the cooking mixture in conventional rice cookers, then the cooking process maintains moisture and continues cooking, but the carbohydrate level of the finished rice remains high
Solution Approach 1:
The insert is divided into multiple functional zones: a reservoir for collecting water vapor and dissolved carbohydrate, a filtering mechanism to separate carbohydrate from vapor, and a return path for purified water. This segmentation allows the system to selectively remove carbohydrate while maintaining the continuous cooking process.
Solution Approach 2:
The insert extracts dissolved carbohydrate from the water vapor returning to the cooking mixture. The reservoir captures water vapor, the filter removes carbohydrate, and only purified water is returned to the pot, effectively taking out the harmful substance (carbohydrate) from the cycle.
2Quantity of substance
If a single cooking area is used in conventional rice cookers, then the device structure remains simple, but the amount of food that can be cooked is limited
Solution Approach 1:
The insert utilizes the vertical dimension by extending upward from the cooking pot, creating multiple cooking levels. The elevated shelf provides a second cooking surface in the vertical space above the main pot, effectively increasing food capacity without expanding the horizontal footprint.
Solution Approach 2:
The insert serves multiple functions simultaneously: it acts as a carbohydrate-removal system for the main pot, provides an elevated shelf for additional cooking, and creates a multi-level cooking structure. This multi-functionality increases food capacity while adding only one component.
3Quantity of substance
If water vapor condenses and returns to the cooking mixture in conventional rice cookers, then the cooking process is self-sustaining, but the dissolved carbohydrate is also returned increasing the carbohydrate content of the finished rice
Solution Approach 1:
The insert acts as an intermediary between the cooking pot and the condensing water vapor. It intercepts the vapor, filters out carbohydrate, and returns only purified water to the pot. This intermediary mechanism removes carbohydrate without disrupting the self-sustaining cooking process.
Solution Approach 2:
The filtering mechanism in the insert extracts dissolved carbohydrate from the condensing water vapor. By removing the harmful substance (carbohydrate) from the return path, the system reduces the carbohydrate content of finished rice while maintaining cooking efficiency through continuous water return.
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
Reduces carbohydrate content in cooked rice and allows for simultaneous cooking of multiple foods, enhancing cooking flexibility and energy efficiency.
Implementation Method 1
water vapor from boiling constantly returns to the mixture which contains dissolved carbohydrate from the exterior surface of the rice. As the vapor cools, the water and dissolved carbohydrate are returned to the cavity and the mixture of water and rice
Implementation Method 2
heating elements of the cooker are activated only to cause the temperature of the cooking cavity in the cooker pot to rise to a temperature which is only sufficient for boiling the contents
Implementation Method 3
water vapor from boiling constantly returns to the mixture
Data Source
AI summary
A cooking insert is provided which is configured for operative engagement with a rice cooker to position a reservoir elevated above cooking food. Water vapor and carbohydrates from condensed steam is captured in the reservoir to reduce the starch within the cooking food.


