Magnetic Probe Coupling in Thermal Analyzers to Prevent Breakage
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Solution Overview
Problem
Existing thermal analyzers using detachable probes made of materials like quartz glass or ceramic face issues with probe breakage during attachment and detachment due to the risk of falling, and require skilled handling to avoid this.
Innovation Solution
The thermal analyzer employs a magnetic connection mechanism using permanent magnets, electromagnets, or paramagnetic materials to attract and connect the probe joint and connecting joint, eliminating the need for manual stabilization during attachment and detachment, and includes a magnetic shield to prevent interference with displacement detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a detachable structure with male and female threads is used to connect the probe and load transmission shaft, then the probe can be easily attached and detached, but the probe may fall and break during attachment and detachment
Solution Approach 1:
The patent replaces the traditional mechanical thread connection system with a magnetic connection system. Permanent magnets are embedded in the probe joint and connecting joint, creating magnetic attraction that holds the probe to the load transmission shaft during attachment and detachment operations, eliminating the risk of probe fallage while maintaining ease of operation.
2Ease of operation
If manual handling is used to attach and detach the probe, then the connection can be made, but skilled handling is required to prevent probe fallage
Solution Approach 1:
The magnetic connection system enables the probe to self-attach and self-detach without requiring skilled manual handling. The permanent magnets automatically provide holding force when the probe is brought near the load transmission shaft, and the connection is automatically maintained during operation, eliminating the need for complex manual stabilization techniques.
3Reliability
If permanent magnets are used to connect the probe joint and connecting joint, then probe breakage is suppressed, but magnetic interference may affect displacement detection
Solution Approach 1:
The patent introduces a non-magnetic intermediary material (such as aluminum or copper shielding) between the permanent magnets and the displacement detection mechanism. This shielding layer blocks magnetic field interference from reaching the detection sensors while allowing the magnetic attraction force to continue holding the probe to the load transmission shaft, thus resolving the conflict between stability and measurement precision.
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 reduces probe breakage and simplifies the attachment and detachment process, maintaining measurement precision by minimizing magnetic interference.
Implementation Method 1
each of the connecting joint and the probe joint has a permanent magnet; and the probe joint and the connecting joint can be connected by force of attraction based on magnetic force between the permanent magnets
Implementation Method 2
a magnetic shield member may be provided between the connecting joint and both the load generator and the displacement detection mechanism along the axial direction
Data Source
AI summary
Proposed is a thermal analyzer. The thermal analyzer includes a probe extending in an axial direction, a first end of the probe coming into contact with a sample to apply a load to the sample, a probe joint disposed at a second end of the probe, a load generator, a load transmission shaft extending in the axial direction, having a first end directly or indirectly connected to the load generator and a second end at which a connecting joint is provided load transmission shaft configured to transmit the load from the load generator to the probe by connecting the connecting joint to the probe joint, a displacement detection mechanism, and a heating furnace, wherein each of the connecting joint and the probe joint has a permanent magnet, and the connecting joint and the probe joint can be connected by force of attraction based on magnetic force between the permanent magnets.