Agitator Vane with Twisted Blade Profile and Socket Mount

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Solution Overview

Problem

Industrial agitators face challenges in achieving high efficiency, reliability, and flexibility in mixing or agitating process fluids, particularly in adapting to varying fluid compositions and conditions.

Innovation Solution

A vane design for an impeller with a blade having a maximum width of at least 55% of its height, featuring a socket for mounting, a twisted profile, and adjustable curvature, allowing for high efficiency and easy adaptation to different applications, along with a flange socket for flexible mounting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the blade width is increased to improve mixing efficiency, then the agitating efficiency is improved, but the device complexity increases

Engineering Contradiction:
Improveagitating efficiencyVSAvoidblade geometry complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by specifying that the maximum blade width should be at least 55% of the blade height, preferably at least 65%. This quantitative parameter definition optimizes the blade geometry to achieve high agitating efficiency while maintaining manufacturability. The specific width-to-height ratio range provides a clear design guideline that balances performance with simplicity.

Inventive Principle:
Principle #35Parameter changes

2Ease of manufacture

If the vane design is made fixed to simplify manufacturing, then the ease of manufacture is improved, but the adaptability to different process conditions deteriorates

Engineering Contradiction:
Improvevane manufacturing simplicityVSAvoidadaptation to process conditions
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The vane is designed as a separate, detachable component with a socket for mounting to the impeller. This segmentation allows the vane to be manufactured independently using standard processes, then assembled to the impeller. The modular design enables easy replacement and reconfiguration of vanes to adapt to different process conditions without redesigning the entire impeller assembly.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent enables dynamic adaptability by allowing the vane to be mounted in different orientations on the impeller hub. The socket design permits rotational adjustment, so the same vane can be optimized for different process requirements by changing its angular position, providing versatility without requiring multiple custom-manufactured components.

Inventive Principle:
Principle #15Dynamics

3Use of energy by moving object

If the blade width is increased to improve mixing efficiency, then the energy consumption is reduced, but the blade structural strength may be compromised

Engineering Contradiction:
Improvepower consumptionVSAvoidblade structural strength
Core Design Contradiction:
Use of energy by moving objectVSStrength

Solution Approach 1:

The patent optimizes the blade geometry parameters, specifically defining the maximum width as at least 55% (preferably at least 65%) of the height. This parameter optimization achieves the right balance: sufficient width to reduce power consumption through improved fluid interaction, while maintaining adequate structural strength through the specific geometric proportions and the support provided by the socket mounting system.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS11642637B2Vane for an impeller of an agitator, impeller and agitator
Publication Date: 2023.05.09 SULZER MANAGEMENT AG
  • US11642637B2 patent drawing
  • US11642637B2 patent drawing
  • US11642637B2 patent drawing

AI summary

A vane for an impeller of an agitator includes a socket having a base plane configured to mount the vane to an impeller, and a blade configured to mix a process fluid, the blade having a leading edge, a trailing edge, and a blade tip extending from the leading edge to the trailing edge at an end of the blade facing away from the socket, the blade having a pressure side and a suction side, and the pressure side having a first concave region towards the leading edge, a second concave region toward the trailing edge and a convex region between the first and second concave regions.