Cooktop appliance and temperature switch
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Solution Overview
Problem
Existing cooktop appliances face challenges in accurately measuring temperature near the heat source due to misalignment of temperature switches with the drip pan, leading to potential overheating and unsafe conditions.
Innovation Solution
A cooktop appliance design featuring a switch bracket with a cantilevered mounting plate and elongated pins that allow the temperature switch to pivot and self-align with the drip pan, ensuring consistent contact and accurate temperature detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a temperature switch is placed in contact with the drip pan to provide accurate temperature measurement, then temperature detection accuracy is improved, but misalignment with the drip pan surface causes measurement errors
Solution Approach 1:
The mounting plate is made movable relative to the heating element, allowing it to dynamically adjust its position. The mounting plate can pivot or shift to maintain proper alignment with the drip pan surface, ensuring consistent temperature measurement contact despite variations in drip pan positioning or manufacturing tolerances.
Solution Approach 2:
The system enables self-alignment through the movable mounting plate mechanism. The mounting plate automatically adjusts its position to achieve proper contact with the drip pan without requiring manual intervention or complex external adjustment mechanisms, ensuring reliable temperature detection.
2Device complexity
If the temperature switch is fixed in position, then device complexity is reduced, but alignment errors with the drip pan occur
Solution Approach 1:
The mounting plate is designed with movable capabilities, allowing it to adjust its position dynamically. This movement enables the temperature switch to maintain accurate alignment with the drip pan while keeping the overall structure relatively simple, avoiding the need for complex adjustment mechanisms.
Solution Approach 2:
The system allows for positional parameter changes of the mounting plate. By enabling the mounting plate to shift or pivot within a certain range, the temperature switch can adapt to variations in drip pan positioning, maintaining measurement accuracy without requiring a completely complex mounting structure.
3Reliability
If the temperature switch is positioned away from the drip pan, then safety risks from overheating increase, but accurate temperature detection cannot be achieved
Solution Approach 1:
The movable mounting plate acts as an intermediary mechanism between the temperature switch and the drip pan. It enables the temperature switch to maintain close proximity to the drip pan for accurate temperature detection and safety protection, while the plate itself absorbs the complexity of positioning adjustments.
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 reliable temperature measurement and safe operation by maintaining constant contact between the temperature switch and the drip pan, preventing overheating and improving the accuracy of temperature regulation.
Implementation Method 1
The temperature switch may be placed in contact with or in close proximity to the drip pan to provide a more accurate temperature measurement
Data Source
AI summary
A cooktop appliance is provided including a top panel, an electric heating element, a drip pan, and a temperature switch. The drip pan may be attached to the top panel and positioned below the electric heating element. A switch bracket may be mounted to the top panel and may include a cantilevered mounting plate that is biased toward or interferes with the drip pan. The temperature switch may be mounted to the mounting plate using two elongated pins passing through two apertures in the mounting plate such that the temperature switch may pivot relative to the mounting plate and self-align with the drip pan. The temperature switch may be operable to limit the power supplied to the electric heating element at a predetermined temperature.