Faucet Mixing Valve Ball Stem Assembly
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Solution Overview
Problem
Existing single-handle water faucet control valves lack efficient mechanisms for independently controlling water temperature and flow rate, often resulting in inadequate control over water delivery characteristics.
Innovation Solution
A valve assembly with a ball and stem assembly that includes a knuckle and lateral extensions, coupled with a coupling member and upper housing, allows for translational movement to control flow rate and temperature by interacting with sealing members and a temperature limiting member, enabling precise adjustment of water flow and temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single-handle control valve is used to control water flow, then the ease of operation is improved, but the ability to independently control temperature and flow rate deteriorates
Solution Approach 1:
The control valve is divided into multiple functional components: a handle for operation, a stem for motion transmission, a ball with extensions for directional control, and separate sealing members for temperature and flow rate control. This segmentation allows each component to specialize in a specific function, enabling independent control of temperature and flow rate while maintaining ease of operation through the single handle.
Solution Approach 2:
The ball component is designed with lateral extensions that move in multiple dimensions - lateral movement controls temperature by adjusting the mix of hot and cold water, while forward/backward movement controls flow rate. This multi-dimensional motion capability within a single handle system resolves the contradiction by providing versatile control without requiring multiple handles.
2Adaptability or versatility
If the valve mechanism is designed to provide independent control of temperature and flow rate, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
Multiple control functions are merged into a single integrated ball component with lateral extensions. The ball simultaneously controls temperature through lateral movement and flow rate through forward/backward movement, eliminating the need for separate control mechanisms and reducing overall device complexity while maintaining independent control capability.
Solution Approach 2:
The single handle serves multiple functions: it transmits motion to the ball, which in turn controls both temperature and flow rate. The ball itself is a universal component that performs dual control functions, reducing the number of parts needed and simplifying the overall valve mechanism while providing adaptable control.
3Adaptability or versatility
If the handle is moved in multiple directions to control both temperature and flow rate, then the adaptability is improved, but the difficulty of detecting and measuring the control parameters increases
Solution Approach 1:
The ball's lateral extensions are designed with specific geometric features that create distinct motion paths for temperature and flow rate control. The lateral movement path corresponds to temperature adjustment, while the forward/backward movement path corresponds to flow rate adjustment. This local differentiation in motion characteristics makes it easier for users to detect and measure control parameters intuitively.
Data Source
AI summary
The present invention relates generally to fluid control valves and, more particularly, to a mixing valve for use within a faucet.