Detachable Hall Element Layout for Stirling Refrigerating Machines
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Solution Overview
Problem
Conventional refrigerating machines using the Stirling cycle principle suffer from inefficient heat dissipation and damage to Hall elements due to magnetic induction, leading to increased costs as the entire module must be replaced when Hall elements are damaged.
Innovation Solution
A refrigerating machine with a detachable Hall element mounted on a circuit board, allowing for easy repair and replacement, where the Hall element is positioned to maintain a distance from the rotor's magnet, reducing heat-induced damage and enabling cost-effective maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the Hall element is integrated into the motor housing, then the structure is compact and simple, but the Hall element cannot be repaired individually and the entire module must be replaced when damaged
Solution Approach 1:
The motor is divided into distinct functional modules: the stator assembly (containing coil unit and circuit board with Hall element), the rotor assembly (containing magnet and shaft), and the housing. This segmentation allows the Hall element to be accessed and replaced independently by removing only the stator assembly, without replacing the entire motor module.
2Power
If the Hall element is positioned close to the rotor magnet, then the magnetic induction efficiency is improved, but heat generated damages the Hall element
Solution Approach 1:
The circuit board serves as an intermediary component between the Hall element and the rotor magnet. It provides electrical connection while maintaining a protective distance, and the housing structure further mediates the thermal environment. This intermediary arrangement allows magnetic induction to occur effectively while protecting the Hall element from direct heat exposure.
Solution Approach 2:
The distance between the Hall element and rotor magnet is optimized to balance magnetic induction efficiency and thermal protection. The housing material and structure are selected to manage heat distribution, creating a thermal parameter profile that protects sensitive components while maintaining operational efficiency.
3Device complexity
If the coil unit and rotor are enclosed in the housing, then the structure is compact, but heat dissipation is poor and magnetic induction is worsened
Solution Approach 1:
The housing structure is designed with differentiated local properties: certain areas provide thermal insulation to protect sensitive components, while other areas incorporate heat dissipation features such as ventilation channels or thermally conductive pathways. This local quality variation allows the compact structure to simultaneously protect components and manage heat effectively.
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 cost of maintenance by allowing individual replacement of damaged Hall elements, extending the life of the refrigerating machine and minimizing the need for full module replacement.
Implementation Method 1
the coil unit 52 and the rotor 54 work by magnetic induction, and then the temperature between them will increase and heat will be generated
Implementation Method 2
the at least one Hall element corresponds in position to the magnet of the rotor
Data Source
AI summary
A refrigerating machine having a detachable Hall element is provided with a cold heat exchange mechanism. The cold-heat exchange mechanism is driven by a driving assembly to generate a low temperature cooling zone at one end of the cold heat exchange mechanism. The driving assembly is composed of at least one rotor and a stator. After the power is input, the rotor can rotate a shaft to drive the cold-heat exchange mechanism to work. The driving assembly further has at least one Hall element and a circuit board on which the Hall element is mounted. Therefore, when the Hall element is damaged, the circuit board can be easily removed for replacement or repair.