Slide-In Simmer Potentiometer for Tool-Free Valve Stem Replacement
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Solution Overview
Problem
Conventional simmer potentiometer replacement in household cooking appliances is time-consuming and requires technician intervention, involving complex disassembly and additional leak testing, increasing costs and inconvenience.
Innovation Solution
A slide-in simmer potentiometer design with a circuit board, wiper rotor, and housing that allows unobstructed access for easy installation and removal from above, below, or the side, eliminating the need to remove the control knob or gas valve, thus simplifying the replacement process and reducing service time and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the conventional potentiometer installation method is used, then the potentiometer can be securely installed on the valve stem, but the replacement process becomes time-consuming and complex requiring technician intervention
Solution Approach 1:
The potentiometer is divided into separable components: a housing that attaches to the control panel and a potentiometer body that slides onto the valve stem. This segmentation allows the potentiometer to be replaced without removing the control panel or valve stem, significantly simplifying the repair process while maintaining secure installation.
Solution Approach 2:
The potentiometer is extracted from its traditional enclosed installation within the control panel structure. By providing a slide-in design that attaches to the valve stem externally, the potentiometer can be removed and replaced independently without disassembling the control panel, reducing device complexity during maintenance.
2Ease of repair
If the conventional potentiometer replacement process is followed, then the potentiometer can be replaced, but additional leak testing is required increasing service time and costs
Solution Approach 1:
By segmenting the potentiometer into a removable housing and a slide-in body that attaches to the valve stem, the design maintains the gas-tight connection without requiring full disassembly. This allows replacement without breaking gas lines, eliminating the need for time-consuming leak testing and reducing service time.
Solution Approach 2:
The potentiometer body is pre-configured with engagement features that maintain gas-tight sealing upon insertion. This preliminary design ensures that no additional leak testing is required after replacement, as the sliding engagement inherently preserves the gas line integrity.
3Ease of operation
If the potentiometer is accessed from the front through the control panel opening, then the potentiometer can be installed, but removal requires removing the control panel or valve stem increasing complexity
Solution Approach 1:
The potentiometer engagement is moved from a front-access dimensional approach to a side-access dimensional approach. The slide-in design allows the potentiometer body to engage the valve stem from the side, perpendicular to the control panel face, enabling easy removal without dismantling the control panel or valve stem assembly.
Solution Approach 2:
The potentiometer is extracted from the traditional front-access installation method and repositioned to slide onto the valve stem from the side. This extraction from the control panel opening constraint allows independent removal and replacement without affecting other components, significantly improving ease of repair.
Data Source
AI summary
A potentiometer for a household cooking appliance including a gas valve having a valve stem. The potentiometer includes a circuit board having a contact, a wiper rotor that is rotatable with respect to the circuit board and having an opening corresponding to an axis of rotation of the wiper rotor, the opening of the wiper rotor for engaging the valve stem of the gas valve, the wiper rotor including a wiper electrically contacting the contact of the circuit board, a housing coupled to the circuit board and enclosing the wiper rotor between the housing and the circuit board, and a first interior edge and a second interior edge formed in each of the circuit board, the wiper rotor, and the housing and defining a channel extending from an outer edge of the potentiometer to the opening of the wiper rotor.