Multi-Port Valve Rotation Stops for Precise Port Alignment
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Solution Overview
Problem
Existing multi-port valves lack precise control over rotation between the valve body and the rotating bushing, leading to suboptimal fluid connections and potential misalignment during operation, resulting in less than optimal fluid flow.
Innovation Solution
A multi-port valve design featuring a directional component with a channel that partially extends around its circumference, combined with a stop member and cover rotationally coupled to limit rotation, ensuring precise alignment and control over fluid flow paths between the input and output ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the rotating bushing is manually rotated to adjust port connections, then the desired output port can be connected to the input port, but the fluid connection quality becomes suboptimal due to slight misalignment
Solution Approach 1:
The patent introduces a detent mechanism that allows the rotating bushing to dynamically transition between fixed rotational positions. The spring-loaded detent engages with notches to lock the bushing at precise orientations, enabling manual adjustment while maintaining optimal alignment. This dynamic locking system resolves the contradiction by providing both adjustability and precision.
Solution Approach 2:
The patent replaces the purely manual rotation system with a mechanical assistance system comprising springs, detents, and notches. This mechanical substitution provides automatic positioning and locking features that enhance alignment precision while maintaining ease of manual operation. The spring-loaded detent mechanism automatically engages to lock the bushing in the correct position, eliminating the need for precise manual alignment.
2Ease of operation
If the rotating bushing is allowed to rotate freely during operation, then adjustment is easy, but inadvertent rotation occurs leading to suboptimal fluid flow
Solution Approach 1:
The detent mechanism creates a dynamic system where the rotating bushing can be easily adjusted by overcoming the spring force, then automatically locks into place. The spring-loaded detent engages with notches to provide stable positioning during operation, preventing inadvertent rotation while maintaining ease of adjustment. This dynamic locking resolves the contradiction between adjustability and stability.
Solution Approach 2:
The spring-loaded detent mechanism provides beforehand cushioning by maintaining constant spring pressure on the detent. This pre-applied force ensures the bushing remains firmly locked in position during operation, preventing inadvertent rotation. The spring cushioning compensates for operational vibrations and forces that might otherwise cause misalignment.
3Adaptability or versatility
If the channel extends completely around the circumference of the directional component, then fluid can flow to any output port, but precise control over fluid flow paths is lost
Solution Approach 1:
The patent segments the continuous channel into discrete sections separated by blocking extensions. These blocking extensions create distinct flow paths that correspond to specific rotational positions of the directional component. By segmenting the channel, the system provides versatile flow options while maintaining precise control, as each segment activates only when the directional component is in the corresponding rotational position.
Solution Approach 2:
The blocking extensions create local variations in channel geometry that control fluid flow at specific locations. Each blocking extension is positioned to block flow to specific output ports at certain rotational positions, enabling precise control over which output ports receive fluid. This local quality modification resolves the contradiction by providing both versatility and precision.
Data Source
AI summary
A multi-port valve is disclosed that includes a valve body having an outer surface, an inner surface that defines an internal cavity, an upper end, a lower end, a stop member extending from the upper end, a plurality of output ports for transmitting a liquid to respective outputs, and an input port for receiving the liquid from an input. The multi-port valve also includes a directional component positioned in the internal cavity and configured to be rotated relative to the valve body, where the directional component includes a stop member and defines an outer surface that includes a channel for directing the liquid from the input port to one of the plurality of output ports when the directional component is in a first rotational position and a blocking extension that extends through the channel to prevent the channel from completely extending around the circumference. The multi-port valve also includes a cover rotationally coupled to the directional component for rotating the directional component relative to the valve body.