Impeller Structure with Tilting Circumferential Members

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Solution Overview

Problem

Conventional impellers in fluid pumps used in electronic cooling systems experience instability and increased friction due to uneven liquid pressure and large diameter through holes, leading to unsmooth rotation and potential damage.

Innovation Solution

The impeller design features a first set of fluid-guiding blades on the top surface and a second set of fluid-guiding members with a tilting structure on the circumferential surface, along with smaller through holes, to maintain liquid pressure and stabilize rotation, and optionally trenches or arc recesses for guiding fluid flow and air venting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If through holes of relatively large diameter are provided in the impeller, then liquid can flow freely through the impeller, but liquid loss increases and rotation stability deteriorates

Engineering Contradiction:

Improveliquid flow rateVSAvoidliquid loss

Core Design Contradiction:

ProductivityVSLoss of substance

Solution Approach 1:

The patent applies local quality by providing through holes only in specific regions of the impeller body where liquid flow is needed, rather than uniformly distributing holes throughout. This localized approach maintains adequate liquid flow while minimizing the total hole area and thus reducing liquid loss.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent uses a porous structure formed by multiple through holes to achieve both liquid permeability and rotational stability. The porous configuration allows liquid to pass through while the distributed hole pattern maintains structural integrity and balance during rotation.

Inventive Principle:

Principle #31Porous materials

2Quantity of substance

If through holes are provided in the impeller, then liquid can flow through the impeller body, but pressure unevenness occurs when liquid level decreases causing impeller deflection

Engineering Contradiction:

Improveliquid flowVSAvoidimpeller rotation stability

Core Design Contradiction:

Quantity of substanceVSStability of the object's composition

Solution Approach 1:

The patent provides through holes only in specific regions of the impeller body rather than uniformly throughout, creating localized flow paths that maintain pressure distribution and rotational stability even when liquid levels fluctuate.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The impeller design incorporates through holes and fluid-guiding members in advance to ensure proper liquid distribution and pressure balance before operation begins, preventing deflection and instability during operation.

Inventive Principle:

Principle #10Preliminary action

3Ease of manufacture

If conventional impeller structure is used, then manufacturing is simple, but rotation is unsmooth causing friction increase and potential damage

Engineering Contradiction:

Improveimpeller manufacturing simplicityVSAvoidrotation smoothness

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent segments the impeller structure into distinct functional components: fluid-guiding members with blades for liquid direction, through holes for liquid penetration, and a circumferential surface for structural support. This segmentation allows each component to perform its specific function optimally while maintaining manufacturability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent employs curved and tilted surfaces in the fluid-guiding members and blade configurations to optimize liquid flow patterns and reduce turbulence, thereby improving rotation smoothness while maintaining manufacturing feasibility through standard forming processes.

Inventive Principle:

Principle #14Spheroidality (Curvature)

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

This design ensures smooth and stable rotation of the impeller, reducing friction and preventing damage by maintaining consistent liquid pressure and minimizing liquid loss, thereby enhancing the performance and longevity of the fluid pump and liquid cooling system.

Implementation Method 1

a plurality of protruding blades 100 are arranged atop for driving the flow of the water cooling liquid... While the water pump 1 is working, the water cooling liquid is thrown out due to a centrifugal force

Methodology Applied

Scientific EffectCentrifugal force: Centrifugal Force

Data Source

PatentEP3147512B1Impeller structure with improved rotation stability

Publication Date: 2019.06.19 COOLER MASTER CO LTD

Figure 1
Figure 2A~2B
Figure 3A

AI summary

An impeller (3) for used in a fluid pump device (61) includes a shaft (39) controlled to revolve in a first direction; an impeller body (300) coupled to the shaft (39) and driven by the revolving shaft (39) to rotate, the impeller body (300) having a top surface (30), a bottom surface (32) and a circumferential surface (31); a first set of fluid-guiding members (301) disposed on the top surface (20) of the impeller body (300) for driving a fluid to flow along a centrifugal direction of the revolving shaft (39); and a second set of fluid-guiding members (311) disposed on the circumferential surface (31) of the impeller body (300). Each or at least one of the second set of fluid-guiding members (311) has a titling structure (3110) for driving the fluid to flow from the top to the bottom of the impeller (3) along a designated path on the circumferential surface (31).