Jet Shower Nozzle Axial Movement for Water Pressure
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Solution Overview
Problem
Existing jet shower devices in solar water heaters face challenges in achieving higher usage comfort, lower usage cost, and more convenient operation, particularly in maintaining effective jetting performance and water pressure, especially when adjusting inflow rates of cold and hot water.
Innovation Solution
A jet shower device with a water mixer body, a jet injection valve featuring a movable nozzle and a needle, and a shower assembly, where the nozzle's axial movement adjusts the cold and hot water inflow spaces and outlet, ensuring consistent water pressure and efficient mixing through a throat tube and expansion tube with variable diameters, and a supporting member with convex ribs for enhanced fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the opening size of the cold water flow rate regulating switch is adjusted to be smaller than the opening size of the nozzle, then the pressure of the working fluid inside the nozzle is reduced, but the jet velocity of the working fluid of cold water decreases, causing weaker effect of hot water pumping
Solution Approach 1:
The patent applies the dynamics principle by making the nozzle opening adjustable through axial movement. The nozzle can be moved along the axial direction to change its opening size dynamically, allowing the system to adapt to different flow rate requirements while maintaining effective jetting performance and hot water pumping effect.
Solution Approach 2:
The patent changes the parameter of nozzle opening size by allowing axial movement of the nozzle. This parameter change enables optimization of both cold water inflow rate and jet velocity, resolving the contradiction between reducing cold water flow and maintaining pumping effect.
2Device complexity
If the nozzle opening is constant, then the structure is simple, but the jetting effect deteriorates when cold water proportion is small due to insufficient water pressure
Solution Approach 1:
The nozzle is designed to be movable along the axial direction, transforming from a static constant-opening structure to a dynamic adjustable-opening structure. This allows the nozzle opening to be optimized for different operating conditions, ensuring reliable jetting effect even when cold water proportion is small.
3Reliability
If the nozzle is made movable along the axial direction to adjust opening size, then the jetting effect is improved, but the device complexity increases
Solution Approach 1:
The patent merges the nozzle adjustment function with the existing valve structure. The nozzle is integrated into the valve body and its axial movement is coordinated with the needle position, combining multiple functions into a unified structure that improves jetting effect without proportionally increasing complexity.
Solution Approach 2:
The movable nozzle serves multiple functions: it adjusts the cold water inflow space, adjusts the hot water inflow space, and controls the jetting outlet opening. This multi-functionality reduces the need for separate adjustment mechanisms, thereby limiting the increase in 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
The device achieves better jetting effect and simpler operation by maintaining high water pressure and efficient mixing of cold and hot water, even when the proportion of cold water is small, through adjustable nozzle movement and structural design, enhancing user comfort and reducing operational complexity.
Implementation Method 1
a jet shower device... the nozzle's axial movement adjusts the cold and hot water inflow spaces and outlet, ensuring consistent water pressure and efficient mixing
Data Source
AI summary
A shower jet device, includes a spray needle arranged in a spray nozzle; a cold water inflow space and a cold water jet outlet formed between the spray nozzle and the spray needle; a hot water inflow space formed between the spray nozzle and a valve body; wherein a cold water inlet respectively in communication with a cold water opening and the cold water inflow space; and a hot water inlet is respectively in communication with a hot water opening and the hot water space.