Jacketed Heating Element for Frying Oil to Reduce Polymer Formation
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Solution Overview
Problem
Deep fryers cause oil degradation, oxidation, and polymer formation leading to foaming, which is unsafe and affects food quality, necessitating frequent oil replacement and the use of anti-foaming agents.
Innovation Solution
A jacketed heating system that prevents direct contact between the heating element and frying oil, ensuring uniform heat distribution to minimize polymer formation, oxidation, and foaming, allowing extended oil usage without anti-foaming agents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heating element is used to heat frying oil, then the frying temperature is achieved, but direct contact causes localized overheating leading to polymer formation and foaming
Solution Approach 1:
A jacketed heating element is introduced as an intermediary between the heat source and the frying oil. The jacketed element transfers heat through its wall to the oil without direct contact, preventing localized overheating and polymer formation while maintaining effective frying temperature.
Solution Approach 2:
The heating method is changed from direct contact heating to indirect heating through a jacketed element. This parameter change in the heating mechanism eliminates the harmful effect of direct contact overheating while preserving the necessary thermal energy transfer for frying.
2Reliability
If anti-foaming agents are added to prevent foaming, then safety is improved, but the oil requires frequent replacement due to contamination
Solution Approach 1:
The solution converts the harmful effect of overheating into a beneficial outcome by using indirect heating. The jacketed heating element prevents the root cause of foaming (localized overheating and polymer formation), thereby eliminating the need for anti-foaming agents and extending oil lifespan.
3Speed
If heating portions of oil well above desired frying temperature, then heating speed is improved, but excessive heat causes degradation and oxidation
Solution Approach 1:
The heating parameter is changed from high-temperature rapid heating to controlled indirect heating. The jacketed element provides sustained heat transfer at appropriate temperatures, achieving effective frying without the degradation and oxidation caused by excessive temperatures.
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 jacketed system reduces polymer formation and oxidation, extends oil lifespan, improves food quality, and reduces safety hazards by minimizing foaming, enabling longer frying periods without the need for anti-foaming agents.
Implementation Method 1
The jacket transfers heat from the heating element to the frying oil
Implementation Method 2
The jacket is configured to uniformly distribute heat produced by the heating element within the pot
Data Source
Figure 1
Figure 2A~2B
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AI summary
Various embodiments provide a method of frying. A method includes heating frying oil to a frying temperature and maintaining the frying oil at the frying temperature for a frying period. During the method no part of the oil exceeds 220 ºC. A system for using the method of frying includes a pot for holding a frying oil, a heating element for heating the frying oil, and a jacket surrounding the heating element. The jacket prevents direct contact between the frying oil and the heating element. The jacket is configured to uniformly distribute heat produced by the heating element within the pot such that the frying oil has less than 10 area% polymers at the end of heating and maintaining the frying oil at a frying temperature for a frying period.