Modular Magnetic Stirring Apparatus for Multi-Sample Handling
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Solution Overview
Problem
Existing laboratory stirring systems are limited in their ability to simultaneously stir multiple samples of varying volumes and types, often requiring excessive space and complicating handling due to fixed mechanical or magnetic stirrers that are not adaptable to different experimental needs.
Innovation Solution
A modular apparatus featuring a sample holder and a bar element with a magnetic stirring portion that produces a rotating magnetic field, allowing for contactless stirring of multiple samples with adjustable orientation and strength, which can be easily detached and combined with different holders for optimal space use and versatility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single pressure vessel with a fixed mechanical stirrer is used, then the structure is simple, but the number of samples that can be stirred simultaneously is limited and the capacity may be over-dimensioned for small samples
Solution Approach 1:
The pressure vessel is divided into multiple independent sample holders, each capable of holding a separate sample vessel. This segmentation allows multiple samples to be stirred simultaneously while maintaining a relatively simple overall structure, as each segment operates independently with its own stirrer.
Solution Approach 2:
The sample holders are designed with universal compatibility to accommodate different sample vessel sizes and types. This multi-functionality allows the same apparatus to handle various sample volumes and configurations, from small to large samples, without requiring multiple specialized devices.
2Ease of operation
If an integrated magnetic stirrer is provided below the pressure vessel, then stirring can be achieved, but the apparatus occupies excessive space and handling is complicated
Solution Approach 1:
Instead of placing the magnetic stirrer in a large integrated base below the pressure vessel, the invention moves the stirring function to the vertical dimension by incorporating miniaturized magnetic stirrers within each sample holder. This dimensional shift reduces the horizontal footprint of the apparatus while maintaining effective stirring capability.
Solution Approach 2:
The invention replaces the large integrated mechanical drive system with distributed magnetic coupling mechanisms. Each sample holder contains a small magnet that couples with an external magnetic field, eliminating the need for a large mechanical transmission system and simplifying handling operations.
3Adaptability or versatility
If the stirrer is fixedly provided in the apparatus, then the structure is stable, but adaptability to different experimental needs is reduced
Solution Approach 1:
The sample holders are designed with dynamic adjustability, allowing their position and orientation to be modified according to different experimental requirements. This dynamic capability enables the same stable structure to adapt to various sample configurations, vessel types, and stirring conditions without compromising structural integrity.
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
Enables efficient stirring of multiple samples of varying volumes and types simultaneously, reducing spatial requirements and simplifying handling by providing a flexible and adaptable solution for laboratory operations.
Implementation Method 1
a bar element (300), which extends along a longitudinal axis (LA) and which is connected to the sample holder (200). The bar element (300) comprises a magnetic stirring portion (330), by means of which a magnetic field rotating relative to the sample holder (200) about the longitudinal axis (LA) can be produced
Data Source
AI summary
The present invention relates to an apparatus (100) for producing a driving force for stirring samples, in particular samples for laboratory operations such as, for example, liquids, liquids with solid samples contained therein or solid samples, said apparatus comprising a sample holder (200) for receiving at least one sample vessel (220) for samples and a bar element (300), which extends along a longitudinal axis (LA) and which is connected to the sample holder (200), wherein the bar element (300) comprises a coupling portion (310) for detachably coupling the bar element (300) to an operating unit (800), a fastening portion (320) for fastening the sample holder (200) to the bar element (300) and for positioning the sample holder (200) along the longitudinal axis (LA) in defined fashion, and a magnetic stirring portion (330), wherein the bar element (300) is embodied in such a way that a magnetic field that rotates relative to the sample holder (200) about the longitudinal axis (LA) can be produced by means of the magnetic stirring portion (330). The invention further relates to system (700) comprising an operating unit (800) and the apparatus (100) according to the invention, which are detachably coupled by way of the coupling portion (310). The invention further relates to a process for stirring samples in sample vessels by means of the system (700).