Rotary Pump Flow Channeling Structure for Inlet Filling
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Solution Overview
Problem
Existing rotary pumps face limitations in fluid delivery characteristics due to the main flow direction being predetermined by the shape of the low-pressure inlet, leading to suboptimal filling at the beginning and end of the delivery region, which negatively affects their performance.
Innovation Solution
A rotary pump design featuring a pump housing with a low-pressure inlet and high-pressure outlet, where the delivery rotor is axially positioned between housing parts, and a flow channeling structure within the low-pressure inlet that influences fluid flow by redirecting and accelerating it, ensuring optimal filling of the delivery region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the fluid flow direction is predetermined by the shape of the low-pressure inlet, then the pump structure is simple, but the delivery characteristics are poor due to suboptimal filling at the beginning and end of the delivery region
Solution Approach 1:
The low-pressure inlet is divided into multiple inlet regions (first inlet region, second inlet region, third inlet region) with different flow directions. This segmentation allows each region to independently supply fluid to different portions of the delivery region, improving overall filling efficiency while maintaining a relatively simple overall structure.
Solution Approach 2:
Different regions of the low-pressure inlet are assigned different local flow characteristics. The first inlet region directs fluid axially, the second inlet region directs fluid radially, and the third inlet region directs fluid at an angle. This local differentiation optimizes fluid distribution across the delivery region, ensuring better filling at the beginning and end portions.
2Volume of moving object
If the fluid flows axially and radially into the delivery region from the low-pressure inlet, then the pump can be compact, but filling is only possible to a limited extent at the beginning and end of the low-pressure region
Solution Approach 1:
The invention introduces multi-directional fluid flow (axial, radial, and angled directions) within the compact pump structure. By utilizing multiple spatial dimensions for fluid entry, the design achieves both compactness and improved filling efficiency across the entire delivery region.
Solution Approach 2:
The low-pressure inlet is segmented into multiple regions with different flow directions, allowing comprehensive coverage of the delivery region while maintaining a compact overall pump design. This segmentation enables efficient filling at the beginning, middle, and end portions of the delivery region simultaneously.
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 enhances delivery characteristics while allowing for cost-effective manufacturing and compact dimensions, ensuring efficient fluid delivery and improved performance by optimizing the fluid flow direction and volume within the pump.
Implementation Method 1
A flow channeling structure is provided in the low-pressure inlet and is designed to influence, in particular redirect, the fluid flow in the low-pressure inlet
Data Source
AI summary
A rotary pump for delivering fluid includes: a pump housing having a low-pressure inlet and a high-pressure outlet for the fluid to be delivered; and a delivery rotor rotatable about a rotational axis in the pump housing and including a rotor base body and multiple deliverers distributed over the circumference of the rotor base body for delivering fluid from the low-pressure inlet to the high-pressure outlet. When the delivery rotor rotates, the radial and axial outer edges of the deliverers define a delivery region of the pump. The pump includes a flow channeling structure protruding axially into the low-pressure inlet in relation to the rotational axis of the delivery rotor from the pump housing wall in order to influence fluid flowing in the low-pressure inlet. The flow channeling structure arranged axially next to the delivery region and overlaps at least in portions with the delivery region in the radial direction.