Bladeless Axial Pump Helical Groove Impeller
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Solution Overview
Problem
Conventional axial flow pumps face issues such as increased power consumption due to losses like friction and leakage, wear of impeller blades, and challenges in lubricating moving parts of hermetic reciprocating compressors at low speeds.
Innovation Solution
A bladeless impeller design featuring a rotating rigid body with a helical groove that forms a passage between two parts of the body, allowing fluid movement without blades, and can be connected to a rotating shaft via magnetic coupling for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional impeller blades are used, then fluid pumping function is achieved, but wear and lifespan issues occur
Solution Approach 1:
The invention removes the impeller blades entirely from the pumping system. Instead of using blades to propel fluid, the system uses a helical groove passage that redirects fluid flow to achieve pumping action, thereby eliminating blade wear and extending pump lifespan.
Solution Approach 2:
The invention replaces the mechanical blade-based impeller system with a helical groove passage system. The helical groove creates a screw-like fluid movement mechanism that substitutes for traditional blade mechanics, reducing wear and improving reliability.
2Productivity
If conventional axial flow pump design is used, then fluid pumping is achieved, but power consumption increases due to friction and leakage
Solution Approach 1:
The invention replaces the conventional rotating impeller with blades with a helical groove passage system. This substitution reduces friction losses and leakage by eliminating blade-fluid interaction, thereby improving pumping efficiency and reducing power consumption.
Solution Approach 2:
The helical groove passage uses curved, screw-like geometry to guide fluid flow smoothly through the pump. This curved path reduces turbulence and friction compared to straight blade edges, improving energy efficiency and reducing power consumption.
3Reliability
If bladeless impeller design is implemented, then wear is reduced and lifespan extended, but device complexity changes
Solution Approach 1:
The invention simplifies the impeller structure by removing complex blade components entirely. The remaining structure consists of a housing with an integrated helical groove passage, which is simpler to manufacture and maintain despite achieving the same pumping function.
Solution Approach 2:
The invention merges the impeller and housing into a more integrated structure where the helical groove passage is formed as part of the housing or impeller body. This consolidation reduces the number of separate components while maintaining the bladeless design's wear advantages.
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
The bladeless impeller design enhances the lifespan of axial pumps by reducing wear and power consumption, and improves fluid handling efficiency, making it suitable for low-speed lubrication applications.
Implementation Method 1
the connection of the bladeless impeller to a rotating body is realized via the magnetic coupling means
Data Source
AI summary
A bladeless impeller and a bladeless axial pump having such an impeller, wherein the impeller has at least one rigid body suitable for rotating around at least one axis of rotation, and at least one helical groove located in the body, forming a passage between two parts of the body.