Offset Fryer Pot Geometry for Low Oil Volume and Debris Trapping

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Solution Overview

Problem

Existing fryer pots for commercial deep fryers require high oil volumes, leading to large heat transfer and cold zone volumes, which cause stress in the pot walls and reduce the useful life of cooking oil due to debris recirculation.

Innovation Solution

A fryer pot design with offset sidewalls and endwalls, reducing the overall volume and creating a narrowed cold zone to trap debris, while maintaining a sizable basket opening and using a pressure switch for optimal oil level detection to minimize thermal expansion stress.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If large volume fryer pots are used to cook large amounts of food quickly, then cooking capacity and productivity are improved, but oil volume and heat transfer volume increase causing stress in pot walls and reducing reliability

Engineering Contradiction:
Improvecooking capacityVSAvoidpot wall stress resistance
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The fryer pot is divided into distinct functional zones: a cooking zone with sufficient volume for food preparation and a narrowed cold zone at the bottom for debris collection. This segmentation allows the pot to maintain cooking capacity while reducing overall oil volume and thermal stress on pot walls.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions of the fryer pot have different geometries optimized for their specific functions. The upper cooking zone has a larger cross-section for food capacity, while the lower cold zone is narrowed to minimize oil volume and reduce thermal expansion stress on the pot walls.

Inventive Principle:
Principle #3Local quality

2Productivity

If large volume fryer pots are used to meet customer expectations, then cooking efficiency is improved, but the quantity of cooking oil required increases leading to higher costs and maintenance issues

Engineering Contradiction:
Improvecooking efficiencyVSAvoidcooking oil volume
Core Design Contradiction:
ProductivityVSQuantity of substance

Solution Approach 1:

The fryer pot is divided into distinct functional zones: a cooking zone with sufficient volume for food preparation and a narrowed cold zone at the bottom for debris collection. This segmentation allows the pot to maintain cooking capacity while reducing overall oil volume and thermal stress on pot walls.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions of the fryer pot have different geometries optimized for their specific functions. The upper cooking zone has a larger cross-section for food capacity, while the lower cold zone is narrowed to minimize oil volume and reduce thermal expansion stress on the pot walls.

Inventive Principle:
Principle #3Local quality

3Productivity

If large heat transfer volumes are used to cook large amounts of food, then cooking capacity is improved, but temperature gradients increase causing induced stress in fryer pot walls

Engineering Contradiction:
Improvecooking capacityVSAvoidthermal expansion stress
Core Design Contradiction:
ProductivityVSStress or pressure

Solution Approach 1:

The fryer pot is divided into distinct functional zones: a cooking zone with sufficient volume for food preparation and a narrowed cold zone at the bottom for debris collection. This segmentation allows the pot to maintain cooking capacity while reducing overall oil volume and thermal stress on pot walls.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions of the fryer pot have different geometries optimized for their specific functions. The upper cooking zone has a larger cross-section for food capacity, while the lower cold zone is narrowed to minimize oil volume and reduce thermal expansion stress on the pot walls.

Inventive Principle:
Principle #3Local quality

4Productivity

If conventional fryer pot designs are used, then cooking capacity is maintained, but debris recirculation reduces the useful life of cooking oil

Engineering Contradiction:
Improvecooking capacityVSAvoidcooking oil useful life
Core Design Contradiction:
ProductivityVSDuration of action of stationary object

Solution Approach 1:

The fryer pot is divided into distinct functional zones: a cooking zone with sufficient volume for food preparation and a narrowed cold zone at the bottom for debris collection. This segmentation allows the pot to maintain cooking capacity while reducing overall oil volume and thermal stress on pot walls.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The harmful debris is extracted from the circulating oil by collecting it in the narrowed cold zone at the bottom of the fryer pot. This separation removes the contaminating elements that would otherwise recirculate and degrade the cooking oil, extending its useful life.

Inventive Principle:
Principle #2Taking out (Extraction)

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 design reduces oil volume by approximately 40%, minimizes expansion-induced stresses, and effectively prevents debris recirculation, extending the life of cooking oil and reducing maintenance costs.

Implementation Method 1

a pressure switch on a surface of the fryer pot to provide an indication of sufficient oil level for burner activation

Methodology Applied
Scientific EffectPressure detection: Pressure Increase

Implementation Method 2

reduces the heat transfer and cold zone volumes thereby minimizing expansion induced stresses in the fryer pot walls

Methodology Applied
Scientific EffectThermal expansion: Thermal Expansion

Implementation Method 3

A fryer pot design with offset sidewalls and endwalls, reducing the overall volume and creating a narrowed cold zone to trap debris

Methodology Applied
Scientific EffectGeometric configuration: Geometry

Data Source

PatentUS9232875B2Low oil volume fryer with small cold zone
Publication Date: 2016.01.12 RESTAURANT TECHNOLOGY INC
  • US9232875B2 patent drawing
  • US9232875B2 patent drawing
  • US9232875B2 patent drawing

AI summary

A fryer pot for a deep fryer having a pair of opposed sidewalls, a pair of opposed end walls and a bottom wall. Each of the pair of opposed sidewalls has three successive vertical portions. Wherein each of the three successive vertical portions of each of the pair of opposed sidewalls is inboard of a preceding vertical portion to thereby taper the fryer pot towards the bottom wall. A fryer pot for a deep fryer having a pair of opposed endwalls and a pair of opposed sidewalls and a bottom wall. Each of the pair of opposed endwalls has a first vertical portion and a second vertical portion that are each connected by an angled offset portion to decrease a volume of the fryer pot.