Shower Switching Valve Spool for Aerated and Non-Aerated Spray
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Solution Overview
Problem
Existing shower valve spools fail to effectively switch between waterstop, common water, and aerated spray modes, unable to accommodate varying user preferences for impact force, such as those of the elderly and children who require less impact, while young people need stronger water flow.
Innovation Solution
A switching valve spool design with a coaxially arranged switching shaft that moves along the axis, featuring multiple sealing units and a Venturi effect mechanism to control air intake and water flow, allowing for seamless switching between waterstop, aerated spray, and non-aerated spray modes through a single-direction movement of the shaft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional shower valve spool is used, then the structure is simple, but it cannot switch between waterstop, common water, and aerated spray modes
Solution Approach 1:
The valve spool is segmented into multiple functional sections with different diameters (first, second, and third cavities with decreasing diameters). Each section serves a specific function: the first cavity for waterstop, the second cavity for aerated spray, and the third cavity for common water. This segmentation allows a single valve spool to achieve multiple switching modes without requiring multiple separate valves, thus improving adaptability while maintaining reasonable structural complexity.
Solution Approach 2:
The valve spool is designed as a multi-functional component that can switch between three distinct modes (waterstop, aerated spray, and common water) using a single rotating mechanism. The universal design of the valve spool, with its varying diameter sections and corresponding sealing surfaces, allows it to perform multiple functions that would traditionally require separate control mechanisms, thereby improving versatility without proportionally increasing device complexity.
2Adaptability or versatility
If aerated spray is added to increase impact force, then water flow impact is enhanced, but it cannot accommodate users needing less impact force
Solution Approach 1:
The valve spool employs a dynamic rotating mechanism that allows real-time switching between different water flow modes. The rotating connection between the valve spool and the control knob enables smooth transitions between waterstop, aerated spray, and common water modes. This dynamic design makes it easy for users to adjust impact force according to their needs (e.g., switching to common water for lighter impact) while maintaining simple operation through a single rotational motion.
3Adaptability or versatility
If multiple sealing positions are added to enable mode switching, then switching capability is improved, but the number of parts increases
Solution Approach 1:
Multiple sealing functions are merged into a single integrated valve spool structure. The valve spool incorporates three different diameter sections (first, second, and third cavities) with corresponding sealing surfaces, all formed as one piece. This merging of multiple sealing positions into a single component achieves mode switching capability without increasing the number of separate parts, thus improving adaptability while avoiding the proliferation of components.
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
Enables convenient switching between three modes of waterstop, common water, and functional water, providing a light and reliable operation by balancing water pressure and utilizing the Venturi effect to create aerated spray, addressing user preferences for varying impact forces.
Implementation Method 1
said first sealing unit is arranged against an elastic unit and a support unit respectively at the two side of said first sealing unit along the axis; when said fixed shaft is at the first position, said elastic unit produces holding power to the first sealing unit to make it maintain the condition of fitting into the end face of said inlet; when said switching shaft is at other positions, said elastic unit drives the first sealing unit to reset to the initial position
Implementation Method 2
when the water flows into the fixed shaft 21 from the outlet 222, the air, due to the sudden change of the flow area creating the Venturi effect, is sucked from the air intake 223, and mixes with the water in the fixed shaft 21 to form the aerated spray
Data Source
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AI summary
The present invention discloses a switching valve spool,comprising:a fixed shaft and a switching shaft coaxially arranged in the fixed shaft;the switching shaft is linked with an operating unit and moves between the first position, the second position, and the third position in said fixed shaft along the axis; one end of the switching shaft is an inlet, other end is an outlet, a flow passage is formed along the axial direction between the inlet and the outlet;when the switching shaft is at the first position, the inlet is closed to achieve a state of waterstop; when the switching shaft is at the second position, the inlet is open and an air intake is formed between the side wall of the switching shaft closing to the outlet and the fixed shaft, when the water flows into the fixed shaft from the outlet, the air, due to the diameter of the fixed shaft is larger than the diameter of the outlet, sucked from the air intake under the the Venturi effect, mixes with the water in the fixed shaft to form an aerated spray;when the switching shaft is at the third position, the inlet remains open and the air intake is closed to form a non-aerated spray.