Linear Motor Cooling Layout for Compact Moving Bodies
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Solution Overview
Problem
The existing cooling configurations for linear motors, as described in WO2012/145085A1, lack efficiency and practicality, leading to thermal deformation and degradation issues.
Innovation Solution
A T-type linear motor with a heat dissipator that extends to the rear side of one of the pair of stators, allowing for increased cooling freedom and a smaller moving body dimension, thereby enhancing the practicality of the linear motor and its driven device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the heat dissipator extends from the opposite side of the moving body (conventional configuration), then the cooling structure is simpler to implement, but the dimension of the moving body in the alignment direction increases and the degree of freedom for attaching to various devices is reduced
Solution Approach 1:
The heat dissipator is configured to extend in the width direction (perpendicular to the alignment direction) rather than extending in the alignment direction. This dimensional change allows the cooling function to be achieved without increasing the length of the moving body in the alignment direction, thereby maintaining adaptability for attaching to various devices while solving the cooling requirement.
2Length of moving object
If the heat dissipator extends to the rear side of the stator through the space between the stator and moving body, then the moving body dimension is reduced, but the cooling structure becomes more complex
Solution Approach 1:
The heat dissipator serves multiple functions: it acts as both a cooling component and a structural element that utilizes the existing space between the stator and moving body. By making the heat dissipator extend through this space to the rear side of the stator, the design achieves compact dimensions without requiring additional separate cooling structures, thus balancing complexity reduction with effective cooling.
3Reliability
If conventional cooling configurations are used, then the implementation is straightforward, but thermal deformation and degradation of component members occur due to insufficient heat dissipation
Solution Approach 1:
The cooling configuration is optimized by positioning the heat dissipator specifically in the space between the stator and moving body, allowing heat to be dissipated locally at the heat source. This localized cooling approach effectively prevents thermal deformation and degradation of component members while maintaining ease of manufacture by utilizing the existing structural space rather than requiring additional complex cooling systems.
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 proposed cooling method effectively increases the cooling structure's freedom and reduces the moving body's dimension, ensuring a large thrust force while improving the linear motor's practicality for various device applications.
Implementation Method 1
a heat dissipator that extends to a rear side of one of the pair of stators
Data Source
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AI summary
Cooling member 142 for cooling linear motor 56 includes heat collector 150 provided inside movable element 102 for absorbing the heat of the movable element and heat dissipator 152 extending from heat collector 150 to the outside of the movable element and dissipating the heat absorbed by heat collector 150, wherein heat dissipator 152 of cooling member 142 protrudes from a portion of movable element 102 on the moving body 50 side, and extends to the back side of the pair of stators 100 through a space between one of the pair of stators 100, that is, stator 100a and moving body 50.