Pan Support Welding Design for Gas Hob Structural Strength
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Solution Overview
Problem
Existing pan supports for gas hobs lack sufficient structural strength, particularly when loaded with full containers, and existing cost-effective solutions like welding often compromise on strength due to limited weld seam length.
Innovation Solution
A pan support design featuring a metal frame with an inner wall and a support arm secured through a base, with an elongated part extending inwardly, creating two perpendicular welding seams that enhance moment strength by distributing load forces effectively, and a blade part to dissipate thermal stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If welding is used to connect support arms to the frame, then cost efficiency is improved, but structural strength deteriorates due to limited weld seam length
Solution Approach 1:
The support arm is designed with an elongated part that extends in a direction perpendicular to the frame wall, creating a two-dimensional welding surface instead of a linear weld seam. This dimensional change allows for increased weld area without increasing the length of the support arm projection, thereby improving structural strength while maintaining cost-effective welding processes
Solution Approach 2:
The welding connection is segmented into two separate welding seams: one connecting the base of the support arm to the upper part of the frame, and another connecting the elongated part to the inner wall of the frame. This segmentation distributes the load across multiple connection points, enhancing overall structural strength while using standard welding procedures
2Ease of manufacture
If a flat support arm structure is used, then manufacturing cost is reduced, but moment strength deteriorates under load
Solution Approach 1:
The flat support arm is extended in the vertical direction perpendicular to the frame wall, creating a lever arm that resists moment loads more effectively. This dimensional extension of the flat structure increases the moment of inertia without requiring a thicker or more complex arm structure, maintaining manufacturing simplicity while improving moment strength
Solution Approach 2:
The moment-resisting function is extracted from the support arm itself and transferred to the elongated part that extends perpendicular to the frame. This allows the main support arm to remain a simple flat structure for cost-effective manufacturing, while the elongated extension provides the necessary moment resistance through its geometric configuration and welding connection
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 provides increased structural strength and resistance to sudden impacts and thermal deformation, allowing for the use of a flat support arm structure even under standard weight loads, while minimizing stress application and maintaining ease of cleaning.
Implementation Method 1
a welding seam provided between the elongated part and the frame
Data Source
Figure 1~3
AI summary
The invention relates to a pan support for a gas hob comprising a metal frame (20) with an inner wall (24) and an upper part (26) adjacent to the inner wall (24); and a support arm (10) made of flat metal, which is secured to the upper part (26) through a base (17) such that extending inwardly at the frame (20). The pan support further comprises an elongated part (15) extending to the frame (20) through the base (17) and a welding seam (40) provided between the elongated part (15) and the frame (20).