Laboratory Mixer with Load Sensor for Vessel Stability
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Solution Overview
Problem
Existing laboratory mixers lack reliability in maintaining vessels securely during mixing, particularly in horizontal circular translational oscillation, and fail to dynamically adjust mixing parameters based on load characteristics, leading to potential malfunctions.
Innovation Solution
A mixing device with a receiving adapter and drive that includes sensors to measure load mass and acceleration, allowing for dynamic adjustment of mixing parameters and real-time monitoring of the device's operating state, ensuring secure vessel retention and optimal mixing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a circular translational oscillating mixing movement is used in a horizontal plane, then mixing effectiveness is improved, but vessel stability and security during mixing deteriorates
Solution Approach 1:
The mixer head is designed with a spherical bearing mechanism that allows dynamic adaptation of the mixing movement. The spherical bearing enables the mixer head to pivot and adjust its orientation during operation, transforming the rigid horizontal circular motion into a more flexible three-dimensional movement pattern that maintains vessel stability while preserving mixing effectiveness.
Solution Approach 2:
The patent combines the mixing movement with a tilting mechanism in a single integrated system. The mixer head can simultaneously perform circular translational oscillation and tilting motion, merging two movement types into one coordinated action. This combination allows the vessels to remain securely held while still achieving effective mixing through the复合 motion pattern.
2Productivity
If mixing frequency is increased to improve mixing speed, then productivity is improved, but the risk of malfunction and vessel instability increases
Solution Approach 1:
The patent incorporates sensors that detect the actual mixing frequency and load conditions in real-time. This feedback mechanism allows the control system to monitor the mixing process and automatically adjust parameters to prevent operation at critical frequencies that could cause resonance or vessel instability, thereby maintaining high productivity while ensuring operational reliability.
Solution Approach 2:
The mixing frequency is made dynamically adjustable rather than fixed. The system can change operational parameters including frequency, amplitude, and movement pattern based on detected conditions. This allows the mixer to operate at high speeds when safe and reduce frequency when approaching instability thresholds, optimizing both productivity and reliability.
3Device complexity
If fixed mixing parameters are used to simplify control, then device complexity is reduced, but adaptability to different load characteristics deteriorates
Solution Approach 1:
The mixing system is equipped with sensors and an automated control algorithm that enable it to self-adjust to different loading conditions. The system automatically detects the mass and distribution of vessels, then autonomously optimizes mixing parameters without requiring manual intervention or complex external control systems. This maintains relative simplicity while achieving high adaptability.
4Reliability
If vessels are securely held in a fixed holder, then vessel stability is improved, but the ability to accommodate different vessel types and configurations deteriorates
Solution Approach 1:
The holder design incorporates universal features that can accommodate multiple vessel types and configurations. The spherical bearing mechanism and adjustable clamping system allow the same holder structure to securely retain various vessel arrangements while maintaining stability during mixing. This universal design achieves both secure retention and broad compatibility.
Data Source
Figure 1~2
AI summary
A laboratory mixer has a moving adapter attached to a holder for a laboratory receptacle e.g. a tray sample holder. The moving adapter drive that sets the tray holder in motion following an essentially horizontal, translatory oscillation pattern. The mixer further has a sensor measuring a vector that is dependent upon the load of the holder adapter. The sensor measures the vector that is at the geometric normal to the plane the horizontal pattern.