Yieldable Retention Mechanism for Air Popper Kernel Separation

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Solution Overview

Problem

Conventional heated air popcorn poppers often fail to retain unpopped kernels within the heating zone long enough for them to pop, leading to reduced yields, especially with larger gourmet kernels.

Innovation Solution

A popcorn popper equipped with a yieldable retention mechanism, such as a hingedly attached lid assembly, that transitions from a covering to an open disposition as popped kernels fill the popping portion, allowing only popped kernels to exit, thereby preventing unpopped kernels from being blown out.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If heated air is used as the heating medium, then ease of use and nutritional control are improved, but unpopped kernels are carried out of the heating zone reducing popping yield

Engineering Contradiction:
Improveease of useVSAvoidpopping yield
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

A retention mechanism acts as an intermediary between the heated air stream and the popcorn kernels. This mechanism allows the heated air to circulate for nutritional control and ease of use while preventing unpopped kernels from being carried away, thus maintaining popping yield.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The retention mechanism is divided into multiple yieldable covers or lids that can independently move and adjust. This segmentation allows different parts of the heating zone to be optimized for air circulation while retaining kernels, resolving the contradiction between ease of operation and productivity.

Inventive Principle:
Principle #1Segmentation

2Volume of moving object

If larger gourmet kernels are used, then popped kernel size is improved, but exposure time required for popping increases causing kernels to be blown out before popping

Engineering Contradiction:
Improvepopped kernel sizeVSAvoidexposure time
Core Design Contradiction:
Volume of moving objectVSDuration of action of moving object

Solution Approach 1:

The retention mechanism applies preliminary anti-action by preventing larger gourmet kernels from being carried out of the heating zone before they have sufficient exposure time to pop. The yieldable covers create a protective barrier that counters the airflow's tendency to blow kernels out, allowing the required longer exposure time for large kernels to be achieved.

Inventive Principle:
Principle #9Preliminary anti-action

3Productivity

If a retention mechanism is added to prevent kernel expulsion, then popping yield is improved, but device complexity increases

Engineering Contradiction:
Improvepopping yieldVSAvoiddevice complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The retention mechanism is designed to be self-regulating through yieldable covers that automatically move in response to physical contact with popped kernels. The system self-adjusts without external control, improving popping yield while minimizing the need for complex control systems or additional components.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The retention mechanism utilizes changes in physical parameters (volume expansion of kernels during popping) to trigger the transition from covering to open disposition. This parameter-based control simplifies the device design by using natural physical changes rather than complex mechanical or electronic control systems.

Inventive Principle:
Principle #35Parameter changes

4Productivity

If yieldable covers are used to retain kernels, then unpopped kernels are prevented from exiting, but the mechanism complexity increases

Engineering Contradiction:
Improvekernel retentionVSAvoidmechanism complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The yieldable covers are designed to automatically transition from covering to open disposition through self-service mechanisms. The covers respond to physical contact with popped kernels and naturally transition states without requiring external actuators, control systems, or complex mechanical linkages, thus improving kernel retention while minimizing mechanism complexity.

Inventive Principle:
Principle #25Self-service

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

This design ensures that unpopped kernels are exposed to the heated air for sufficient time to pop, increasing the yield of popped kernels and preventing them from being expelled prematurely.

Implementation Method 1

a hot air stream can be blown upward through the popping portion such that the unpopped popcorn kernels are heated

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 2

the yieldable cover begins to transition from a covering disposition to an open disposition in which popped kernels are allowed to exit the heating zone

Methodology Applied
Scientific EffectMechanical Force: Mechanical Force

Data Source

PatentUS11219231B2Apparatus and related methods for preparing popcorn
Publication Date: 2022.01.11 NATIONAL PRESTO IND INC
  • US11219231B2 patent drawing
  • US11219231B2 patent drawing
  • US11219231B2 patent drawing

AI summary

A heated air popcorn popper and related methods of popping popcorn in which unpopped kernels are retained in a heating zone and are prevented from being expelled before they have been exposed to a heated air stream for sufficient time to result in popping of the kernels. The popcorn popper can have a popping portion including a retention mechanism capable of moving in response to physical contact with popped kernels that experience a dramatic volumetric increase in size following popping. As the number of popped kernels within the popping portion increases, the level of the popped kernels rises until they physically contact the retention mechanism, whereby the retention mechanism is forced to transition from a covering disposition to an open disposition in which popped kernels are allowed to exit the heating zone.