Elastic Conveying Element for Fluid Delivery
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Solution Overview
Problem
Conveying devices for fluids face challenges in minimizing the deformation load on elastically deformable conveying elements, leading to inefficiencies and potential damage during fluid conveyance.
Innovation Solution
A conveying device design featuring a rigid conveying space element and a spring-elastic conveying element that forms an interchangeable unit, with a concave recess allowing for targeted fluid conveyance and automatic return to its convex shape, minimizing deformation and enabling efficient fluid delivery without mechanical damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the conveying element is made elastically deformable to enable fluid conveyance, then the conveying function is achieved, but the element is subjected to high deformation load causing compression or elongation that may lead to damage
Solution Approach 1:
The conveying element is divided into multiple independent bellows sections (first bellows, second bellows, etc.) that can deform independently. This segmentation distributes the deformation load across multiple smaller units rather than concentrating stress on a single element, reducing the overall mechanical stress on each section while maintaining the fluid conveying capability.
Solution Approach 2:
The conveying element transitions from a two-dimensional flat membrane to a three-dimensional bellows structure with volumetric expansion and contraction. This dimensional change allows the element to accommodate deformation in multiple directions (radial and axial), distributing mechanical stress more effectively and reducing concentration points that would lead to damage.
2Stability of the object's composition
If the conveying element is rigidly connected to the conveying chamber element for stability, then structural stability is improved, but the conveying element cannot return to its basic shape after deformation
Solution Approach 1:
The connection between the conveying element and conveying chamber element is designed to be dynamically adaptable - providing structural stability in the installed configuration while allowing the conveying element to dynamically deform and return to its basic shape. The bellows structure maintains its connection to the chamber while enabling repeated expansion and contraction cycles through its flexible accordion-like design.
Solution Approach 2:
The conveying element utilizes changes in its physical parameters (volume, shape, expansion ratio) during operation. The bellows structure can change its volumetric parameters repeatedly while maintaining its structural connection, allowing it to deform for fluid conveyance and then return to its basic shape, enabling repeated action without permanent deformation.
3Ease of repair
If the conveying element is designed for easy replacement as an interchangeable unit, then maintenance and sterility are improved, but the connection to the conveying chamber element becomes more complex
Solution Approach 1:
The conveying element and conveying chamber element are merged into a single interchangeable unit that can be replaced together as one assembly. This combining simplifies the replacement process - the entire unit is removed and replaced without complex disassembly - while the internal connection structure remains optimized for functionality. The merged unit maintains ease of repair and sterility requirements.
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 solution reduces the loading on the conveying element during deformation, allowing for efficient and repeatable fluid conveyance with minimal mechanical stress, enabling easy replacement and maintaining sterility, particularly suitable for medical and other applications where interchangeability is crucial.
Implementation Method 1
the conveying element is spring-elastic, wherein the conveying element returns to a basic shape after deformation
Data Source
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AI summary
The invention proceeds from a delivery device at least for delivery of a fluid, with at least one delivery space (12a; 12a'; 12b; 12c), with at least one rigid delivery space element (14a; 14a'; 14b; 14c) which at least partly bounds the delivery space (12a; 12a'; 12b; 12c), and with at least one elastically deformable delivery element (16a; 16a'; 16b; 16c) which, together with the delivery space element (14a; 14a'; 14b; 14c), forms the delivery space (12a; 12a'; 12b; 12c). It is proposed that at least the delivery space element (14a; 14a'; 14b; 14c) and the delivery element (16a; 16a'; 16b; 16c) together form an exchangeable unit (18a; 18a'; 18b; 18c), wherein the delivery element (16a; 16a'; 16b; 16c) can be arranged with at least partial convex curvature on the delivery space element (14a; 14a'; 14b; 14c), wherein the delivery element (16a; 16a'; 16b; 16c) is elastic and wherein the delivery element (16a; 16a'; 16b; 16c) is connected to the delivery space element (14a; 14a'; 14b; 14c) at least essentially inseparably.