Asymmetric Waffle Iron Plates for Uniform Batter Expansion
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Solution Overview
Problem
Conventional waffle makers result in non-uniform dough expansion and air bubble formation due to the need for reversing the cooking plates during cooking, complicating the waffle-making process and leading to imperfect patterns on the waffles.
Innovation Solution
A non-reversible waffle maker design with a lower cooking plate having cross grooves and an upper plate with a shallower indentation, allowing for limited dough expansion and reduced air bubble formation, facilitating even filling and pattern regularity, and equipped with electric heating resistances for efficient cooking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the cooking plates are made reversible to allow turning over during cooking, then the dough filling uniformity is improved, but the device complexity increases and the ease of operation deteriorates due to requiring user monitoring and timing
Solution Approach 1:
The patent applies asymmetry by making the upper and lower cooking plates different in design. The lower plate has deep grooves to receive batter, while the upper plate has a shallow indentation (10-40% depth of lower plate grooves) that does not require turning. This asymmetric design eliminates the need for reversible plates while achieving uniform dough distribution through the limited expansion space in the shallow upper indentation.
2Quantity of substance
If the upper cooking plate indentation depth is increased to match the lower plate, then the dough receiving capacity is improved, but the air bubble formation increases and pattern regularity deteriorates
Solution Approach 1:
The patent applies parameter changes by optimizing the depth parameter of the upper cooking plate indentation. The indentation depth is set to 10-40% of the lower plate groove depth, creating a limited expansion volume that prevents excessive dough expansion and air bubble entrapment. This parameter optimization maintains adequate dough receiving capacity while ensuring pattern regularity on the waffle surface.
3Manufacturing precision
If the upper cooking plate indentation depth is decreased to limit dough expansion, then the air bubble formation is reduced and pattern regularity is improved, but the dough receiving capacity is reduced
Solution Approach 1:
The patent applies parameter changes by optimizing the depth parameter of the upper cooking plate indentation. The indentation depth is set to 10-40% of the lower plate groove depth, creating a limited expansion volume that prevents excessive dough expansion and air bubble entrapment. This parameter optimization maintains adequate dough receiving capacity while ensuring pattern regularity on the waffle surface.
4Ease of operation
If the waffle maker is designed as non-reversible with fixed cooking plates, then the ease of operation is improved and device complexity is reduced, but the dough filling uniformity deteriorates without plate turning
Solution Approach 1:
The patent applies asymmetry by making the upper and lower cooking plates different in design. The lower plate has deep grooves to receive batter, while the upper plate has a shallow indentation (10-40% depth of lower plate grooves) that does not require turning. This asymmetric design eliminates the need for reversible plates while achieving uniform dough distribution through the limited expansion space in the shallow upper indentation.
Solution Approach 2:
The patent applies preliminary action by pre-configuring the upper cooking plate with a shallow indentation of specific depth (10-40% of lower plate groove depth). This preliminary design ensures that during the single-direction cooking process, the dough naturally expands to fill the cavity uniformly without requiring intermediate turning actions, achieving uniform filling from the outset.
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 ensures uniform waffle baking with reduced air bubbles and regular patterns, simplifying the cooking process and allowing for easy spreading of toppings, while maintaining efficient heating and reduced structural complexity.
Implementation Method 1
each cooking plate is equipped with at least one electric heating resistance
Data Source
Figure 1~3
AI summary
The waffle iron has a lower cooking plate (6) placed in a horizontal position in utilization condition and provided with an indentation that is provided with crossed grooves, where the crossed grooves are provided with studs. An upper cooking plate (5) is provided with an indentation that is turned downwards. The two cooking plates are supported one against the other in a closing position according to a horizontal bond line. Space is formed between cavities of the two cooking plates, where the depth of the indentation of the upper cooking plate is not greater than depth of the grooves.