Deep fryer with external wall heating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Industrial deep fryers with internal heating methods lead to the generation of carcinogenic substances, excessive energy consumption, and frequent oil replacement due to direct contact between the oil and high-temperature resistance, resulting in oil burning and poor heat insulation, which affects cooking quality and increases costs.
Innovation Solution
A deep fryer with external wall heating using a cast iron reservoir and insulation to maintain oil at a balanced temperature, minimizing heat loss and energy consumption, combined with a secondary conical reservoir to prevent food particle dispersion and a wave breaker to separate oil temperatures, and a heat sensor connected to a microprocessor for optimal temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If internal heating method is used with resistance rod directly contacting oil, then heating efficiency is improved, but oil burning and carcinogenic substance generation occur
Solution Approach 1:
The patent introduces an intermediary heating system where electric heating tubes embedded in the reservoir walls heat the reservoir material itself, which then serves as a thermal mediator to heat the oil indirectly. This eliminates direct contact between high-temperature resistance and oil, preventing oil burning while maintaining heating efficiency through the reservoir's thermal conduction properties.
2Ease of manufacture
If thin chrome basin reservoir is used, then manufacturing cost is reduced, but heat insulation performance deteriorates causing excessive energy consumption
Solution Approach 1:
The patent employs a composite reservoir structure made of cast iron or stainless steel with embedded electric heating tubes. The thick-walled material provides inherent thermal mass and insulation properties, reducing heat loss while the embedded heating elements provide efficient heat generation. This composite approach balances manufacturing feasibility with superior thermal retention compared to thin chrome basins.
3Speed
If high power is applied to heat oil rapidly, then heating speed is improved, but energy consumption increases
Solution Approach 1:
The patent utilizes the periodic thermal cycles of the reservoir, where the high thermal mass of the cast iron or stainless steel reservoir absorbs heat during heating phases and releases it during cooling phases. This periodic action allows rapid initial heating followed by sustained temperature maintenance with minimal energy input, reducing overall energy consumption while maintaining heating speed.
Solution Approach 2:
The patent changes the thermal parameters of the system by using high thermal mass reservoir material with embedded heating tubes, altering the heating curve to achieve rapid temperature rise followed by stable maintenance. This parameter change allows efficient energy utilization by matching heating power input with the thermal characteristics of the reservoir material.
4Area of stationary object
If resistance is positioned in lower/middle portion of oil reservoir, then heating coverage is improved, but oil temperature uniformity deteriorates causing localized burning
Solution Approach 1:
The patent transitions from point-source or linear heating (resistance rod in lower/middle portion) to distributed surface heating by embedding heating tubes throughout the reservoir walls. This dimensional change from 0D/1D heating to 2D/3D distributed heating ensures uniform temperature distribution across the entire oil volume, eliminating localized burning while maintaining comprehensive heating coverage.
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
Extends the service life of oil by preventing burning, reduces electrical energy consumption by 40%, and maintains oil quality, thereby reducing operational costs and ensuring food safety.
Implementation Method 1
When the tank manufactured from cast iron material is heated, it can both protect its current temperature and balance its own temperature by means of absorbing the heat accumulated on the thick surface of the cast reservoir
Implementation Method 2
Materials with heat insulation feature are used so as to prevent the heat exchange of the iron cast reservoir with the external environment
Implementation Method 3
a resistance (2) is installed on each of the four sides of the reservoir (1) from its external surfaces
Data Source
AI summary
Disclosed is a deep fryer with a structure which is heated from the external side of the side walls without direct contact of the oil and the heat source that is used to heat the oil in the deep fryers. In particular, the deep fryer includes at least one resistance that provides heating for the side walls, a cold reservoir that is designed to prevent the food residue that sinks to the bottom from burning, and a wave breaker.