Showerhead Pressure-Responsive Plug for Flow Path Switching
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Solution Overview
Problem
Increasing the size of showerheads to accommodate customer preferences often results in low water pressure, leading to an unsatisfactory shower experience.
Innovation Solution
A showerhead design featuring a middle plate with independent water cavities and inlet channels that adjust flow paths based on water pressure, using a plug mechanism and reset mechanism to open or close additional water outlets when pressure exceeds a threshold, allowing water to flow through multiple outlets for increased impact and range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the size of the showerhead is increased to accommodate customer requirements for a particular shower experience, then the shower coverage area is improved, but the water pressure expelled from the showerhead decreases
Solution Approach 1:
The showerhead employs a plug mechanism that dynamically switches between a first flow path (through the middle plate) and a second flow path (bypassing the middle plate) based on water pressure conditions. When water pressure is sufficient, the plug moves to open the second flow path, increasing water flow and coverage area. When water pressure is low, the plug closes the second flow path, concentrating flow through the middle plate to maintain adequate pressure. This dynamic flow path switching resolves the contradiction by adapting the effective showerhead area to match available water pressure.
2Area of stationary object
If multiple water outlets are opened to increase water distribution range, then the shower coverage is improved, but the water pressure at each outlet decreases
Solution Approach 1:
The showerhead uses a pressure-responsive plug mechanism that dynamically controls which flow paths are active. When water pressure exceeds a threshold, the plug moves to enable flow through both the middle plate and the bypass channel, increasing distribution range. When pressure is below the threshold, the plug closes the bypass channel, concentrating flow through the middle plate to maintain sufficient pressure at outlets. This dynamic control resolves the contradiction between coverage area and outlet pressure by adapting the number of active flow paths to available pressure.
3Stress or pressure
If a plug mechanism is added to switch flow paths based on water pressure, then water pressure is maintained satisfactorily, but the device complexity increases
Solution Approach 1:
The plug mechanism is designed to automatically respond to water pressure conditions without external control. The plug is positioned within the flow path such that water pressure differential directly actuates the plug to open or close the second flow path. When pressure is high, the force of the water flow moves the plug to open the bypass; when pressure is low, the plug remains closed. This self-actuating design minimizes complexity by eliminating the need for sensors, actuators, or external control systems, resolving the contradiction between pressure maintenance and device complexity.
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 maintains satisfactory water pressure by selectively opening additional outlets at higher pressures, enhancing the shower experience by increasing impact force and range of water distribution.
Implementation Method 1
a plug that can open and close the second water inlet channel responsive to water pressure exerted on the plug within the showerhead
Implementation Method 2
The reset mechanism includes a first magnet coupled to the bracket and a second magnet coupled to the plug. The second magnet can attract the first magnet.
Implementation Method 3
The reset mechanism includes a spring coupled to the plug and that can bias the plug towards the initial state.
Data Source
AI summary
The present disclosure relates to a showerhead including an upper cover, a lower cover, and a middle plate disposed between the upper cover and the lower cover. A bottom portion of the middle plate defines a first water cavity and a second water cavity that is independent from the first water cavity. The middle plate further defines a first water inlet channel in fluid communication with the first water cavity and a second water inlet channel in fluid communication with the second water cavity. The lower cover includes a first water outlet in fluid communication with the first water cavity and a second water outlet in fluid communication with the second water cavity. The second water inlet channel includes a plug that can open and/or close the second water inlet channel responsive to water pressure exerted on the plug within the showerhead.