Showerhead Valve Sound Activation Temperature Control
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Solution Overview
Problem
Existing showerhead assemblies require users to continuously monitor water temperature or operate complex electronic controls, leading to inefficiencies and water waste, as they often run for extended periods before and after reaching the desired temperature.
Innovation Solution
A thermally controlled showerhead assembly with a manually controllable valve that uses a microphone to detect sound above a predetermined decibel level to open or close the water flow, allowing users to initiate or resume the shower without manual button manipulation, and includes a timer to automatically limit shower duration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a thermally controlled valve is used to automatically stop water flow when desired temperature is reached, then water and energy waste is reduced, but the valve operation becomes less user-controllable
Solution Approach 1:
The valve assembly performs self-service by automatically detecting water temperature and controlling valve operation without requiring continuous user monitoring or intervention. The system serves itself by using the water flow and temperature conditions to trigger automatic valve closure when the desired temperature is reached.
Solution Approach 2:
The system uses feedback from temperature sensing to automatically control valve operation. When the water reaches the predetermined temperature, the feedback signal triggers the valve to close, creating a closed-loop control system that reduces energy waste while maintaining automatic user-controllability through sound activation.
2Ease of operation
If electronically controlled valves with buttons or control knobs are used, then user control over shower parameters is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical control systems (buttons, knobs, switches) with a sound-activated control mechanism. The voice-activated switch detects acoustic signals and translates them into electrical signals that control the valve, substituting mechanical user interfaces with a simpler acoustic sensing system.
Solution Approach 2:
The system changes the control parameter from mechanical (button presses, knob positions) to acoustic (sound wave detection). By using sound intensity and frequency as the control parameter, the system achieves user control without requiring complex mechanical control mechanisms.
3Loss of substance
If users continuously monitor water temperature to avoid waste, then water waste is reduced, but user convenience and time are reduced
Solution Approach 1:
The system performs self-service by automatically monitoring water temperature and controlling valve operation without requiring user time or attention. The valve assembly independently detects temperature changes and executes valve closure when the desired temperature is reached, freeing the user from continuous monitoring duties.
Solution Approach 2:
The system implements automatic feedback-based temperature monitoring where the valve continuously senses water temperature and adjusts operation accordingly. This feedback loop eliminates the need for user monitoring while preventing water waste through automatic valve closure at the predetermined temperature.
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 reduces water and energy waste by automatically stopping the water flow when the desired temperature is reached and allows users to start or resume the shower with a simple sound, eliminating the need for continuous monitoring and complex controls.
Implementation Method 1
U.S. Pat. No. 3,291,391 describes a showerhead having a thermally responsive valve utilizing a bimetallic coiled strip which causes the valve to close upon the water reaching a desired temperature
Implementation Method 2
The processor is programmed to open the valve only upon a sound of 85 decibels or more having been detected by the microphone
Data Source
AI summary
A valve for use with a showerhead assembly includes a housing having a threaded inlet for connecting to a water source and a distally located front face with nozzles. The nozzles are connected to the threaded inlet by a central conduit which is closeable by an electronically controlled valve. The valve is controlled by a processor which opens the valve based on temperature and audio signals above a predetermined decibel level.