Popcorn Kettle Retainer and Stud Assembly for Temperature Control
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Solution Overview
Problem
Conventional popcorn popping kettles face issues such as fastener defects during welding, structural integrity loss due to fastener failure, and challenges in accurately measuring and maintaining the cooking surface temperature, leading to inefficiencies and costly repairs.
Innovation Solution
The design incorporates a popcorn popping kettle assembly with a plurality of retainers and studs that secure the heating element, allowing for improved fastener attachment and reduced risk of damage, along with a temperature sensor positioned through an aperture in the retainer to accurately measure the kettle's temperature, enhancing structural integrity and operational efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If fasteners are welded to the kettle bottom to mount the heating element, then the heating element can be securely attached, but undercut defects occur during welding that create stress concentrations and may cause fastener failure
Solution Approach 1:
The fastener is divided into two separate components: a stud welded to the kettle bottom and a separate fastening mechanism (nut or clamp) that attaches the heating element. This segmentation eliminates the need for complex threaded portions in the welded component, reducing welding defects and stress concentrations while maintaining secure attachment.
Solution Approach 2:
The threading function is extracted from the welded stud and placed in a separate fastening component. The stud itself is simplified to a smooth cylindrical form that is easier to weld without creating undercut defects, while the separate fastening mechanism provides the necessary securing function.
2Strength
If fasteners are rigidly affixed to the kettle bottom, then secure mounting is achieved, but overtightening during assembly weakens or destroys the weld
Solution Approach 1:
The mounting system is segmented into a welded stud and a separate fastening mechanism. The stud is welded with minimal stress, and the fastening mechanism is assembled separately, allowing for controlled tightening without transmitting excessive torque to the weld joint.
Solution Approach 2:
The high-stress fastening function is extracted from the welded component and placed in a separate mechanism. This allows the weld to be performed on a simple stud without the complexity of threading, reducing weld stress and improving weld integrity.
3Strength
If fasteners are welded directly to the kettle bottom, then secure attachment is achieved, but repair becomes expensive and time-consuming requiring machining, stripping, and re-chroming
Solution Approach 1:
The attachment system is segmented into a permanently welded stud and a removable fastening mechanism. When repair is needed, only the fastening mechanism needs to be removed and replaced, while the welded stud remains intact on the kettle bottom, dramatically simplifying the repair process.
Solution Approach 2:
The fastening mechanism is designed as a replaceable component that can be discarded when worn or damaged, while the valuable kettle body and welded stud are preserved. This allows for easy replacement of the fastening mechanism without affecting the permanent structure of the kettle.
4Measurement precision
If temperature sensors are positioned on the external surface of the kettle, then temperature measurement is possible, but the measurement is indirect and less accurate due to separation from the cooking surface
Solution Approach 1:
The temperature sensor is merged with the stud structure, with the sensor positioned at the tip of the stud that contacts or closely approaches the cooking surface. This integration allows the sensor to be positioned close to the measurement point without requiring separate complex positioning mechanisms.
Solution Approach 2:
The stud serves multiple functions: it provides mechanical attachment for the heating element and simultaneously serves as a mounting structure for the temperature sensor. This multi-functionality reduces the need for separate sensor mounting hardware and simplifies the overall device structure.
Data Source
AI summary
A popcorn popping assembly includes a popcorn popping kettle having a side wall extending from a bottom wall. The assembly includes a plurality of retainers. Each of the retainers includes a bottom wall extending between a pair of side walls. The side walls and the bottom wall define a cavity, and an aperture is formed in the bottom wall and defines an essentially closed shaped periphery. The assembly includes a plurality of studs, each configured to be inserted through a respective aperture of a respective retainer. A plurality of fasteners are each configured to be received within the cavity of a retainer and couple with a stud to secure the stud to the retainer. A temperature sensor may extend through at least one of the apertures. A stud may be configured to cooperate with the temperature sensor and hold the temperature sensor in a predetermined location.