Wireless Control Knob for Appliances to Reduce Dust and Liquid Damage
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Solution Overview
Problem
Electrical appliance control knobs are susceptible to damage from dust and liquids, leading to inaccurate or erratic operation due to their physical and electrical connections with the appliance's control circuitry.
Innovation Solution
A control system with a wireless power transfer and control signaling system, allowing the control knob to be detachably attached to the appliance housing, using magnetic coupling, inductive or capacitive power transfer, and radio frequency communication for control signals, including biometric and touch-sensitive inputs, enabling remote monitoring and control via a computing device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control knob is physically and electrically connected to the control circuitry, then the control operation is reliable and stable, but the control knob is susceptible to damage from dust and liquids ingress
Solution Approach 1:
The patent replaces the traditional mechanical and electrical connection between the control knob and control circuitry with a wireless communication system. The control knob communicates with the control module via wireless signals (such as radio frequency), eliminating physical contact points that are vulnerable to dust and liquid ingress while maintaining reliable control functionality.
2Ease of operation
If the control knob is detachably attached to the housing, then the ease of cleaning and maintenance is improved, but the connection stability may be compromised
Solution Approach 1:
The patent employs wireless communication technology to replace the mechanical connection between the detachable control knob and the housing. This allows the control knob to be easily removed for cleaning while maintaining stable and reliable control signals through wireless transmission, eliminating the connection stability issues associated with detachable mechanical interfaces.
3Object-affected harmful factors
If wireless power transfer and control signaling are implemented, then the susceptibility to dust and liquid damage is reduced, but the device complexity increases
Solution Approach 1:
The patent implements wireless power transfer and control signaling systems to eliminate physical connections that are vulnerable to environmental damage. Although this increases device complexity, it provides a comprehensive solution that protects the control knob from dust and liquid ingress while maintaining full functionality through wireless interfaces.
Solution Approach 2:
The wireless communication module serves multiple functions simultaneously, including power transfer, control signaling, and data communication. This multi-functionality consolidates what would otherwise require separate systems, thereby reducing the overall complexity increase while achieving protection from environmental factors.
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 solution allows for easy cleaning and maintenance, prevents damage from liquids, provides a secure and tidy interface, and includes safety features like automatic shutdown when the control knob is detached or biometric authentication fails, while enabling remote operation of the appliance.
Implementation Method 1
an attachment element configured for releasably attaching the control knob to an outer surface of the housing
Implementation Method 2
The wireless power transfer system may be configured to transfer power by way of at least one of inductive coupling and capacitive coupling
Implementation Method 3
The wireless power transfer system may be configured to transfer power by way of at least one of inductive coupling and capacitive coupling
Implementation Method 4
a wireless control signaling module configured for wirelessly communicating a control signal from the control knob through the housing to the control module within the electrical appliance housing
Data Source
Figure 1A~1C
Figure 2
Figure 3
AI summary
A control system for use in controlling operation of an electrical appliance, the control system including: an electrical appliance housing having disposed therein: a control module; and a power source; a control knob including: an attachment element configured for releasably attaching the control knob to an outer surface of the housing; and an input/output module; a wireless power transfer system configured for wirelessly transferring power from the power source through the electrical appliance housing and to the input/output module for use in powering the input/output module; and a wireless control signaling module configured for wirelessly communicating a control signal from the control knob through the housing to the control module within the electrical appliance housing, said control signal received by the control module being indicative of a an operational position or operational state of the control knob, and whereby said control module is configured for controlling operation of the electrical appliance by reference to the received wireless control signal.