Three-Way Valve Flow Diverter Ribs

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Solution Overview

Problem

Three-way valves face inefficiencies in diverging or converging fluid flows due to circulation patterns within the valve body, which can limit flow capacity and affect the quality of the final product in process applications.

Innovation Solution

The valve body incorporates a balanced or unbalanced trim assembly with specific geometrical features such as ribs and protrusions within the throat cavity to disrupt fluid circulation, enhancing flow efficiency by redirecting fluid flow and reducing turbulence.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a conventional three-way valve body is used, then the valve structure is simple, but fluid circulation patterns within the throat cavity reduce flow efficiency and limit flow capacity

Engineering Contradiction:
Improveflow efficiencyVSAvoidvalve body structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The valve body is segmented into distinct functional zones using internal flow diverters that divide the throat cavity into separate flow paths. These diverters create discrete regions for incoming fluid and outgoing fluid, preventing circulation patterns while maintaining overall valve structure integrity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Flow diverters are strategically positioned within specific regions of the throat cavity to address circulation problems locally without redesigning the entire valve body. The diverters are placed at critical locations where fluid circulation occurs, allowing targeted improvement of flow efficiency in affected areas while preserving the simplicity of the overall valve design.

Inventive Principle:
Principle #3Local quality

2Productivity

If flow diverters are added to the valve body, then circulation patterns are disrupted and flow efficiency increases, but manufacturing complexity increases

Engineering Contradiction:
Improveflow capacityVSAvoidvalve body fabrication
Core Design Contradiction:
ProductivityVSEase of manufacture

Solution Approach 1:

The flow diverters are integrated directly into the valve body structure, merging the flow control function with the structural component. This eliminates the need for separate detachable parts and reduces assembly steps, making the manufacturing process more efficient despite the added geometric complexity of the diverters.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The flow diverters serve multiple functions simultaneously: they act as structural support elements within the valve body, define flow paths, prevent circulation patterns, and guide fluid between ports. This multi-functionality reduces the need for additional components and simplifies the overall manufacturing approach.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP2250411B1Three-way valve with flow diverter
Publication Date: 2015.07.22 FISHER CONTROLS INT LLC
  • EP2250411B1 patent drawingFigure 1
  • EP2250411B1 patent drawingFigure 2~2A
  • EP2250411B1 patent drawingFigure 3

AI summary

A three-way valve body (10) comprises a throat (24) defining a generally cylindrical throat cavity (64). At least one flow diverter is carried by the valve body and extends into the throat cavity. The flow diverter advantageously interrupts any circulatory fluid flow within the throat cavity, thereby increasing the efficiency at which fluid flows through the valve body. In one embodiment, the at least one flow diverter can comprise one or more ribs (66, 68a, 68b) integrally formed with the valve body and disposed parallel to a central axis of the throat cavity.