Linear Motor Heat Transfer Member for Coil Cooling
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Solution Overview
Problem
Conventional linear motors experience inadequate heat dissipation due to mismatched curvature radii between coil surfaces and heat dissipation members, limiting current flow and moving device speed.
Innovation Solution
A linear motor design featuring a heat transfer member that contacts the side surfaces of coils, utilizing a heat pipe with a flat heat collection section and protruding heat dissipation section, and strategically placing heat transfer members between adjacent coils to enhance heat transfer and dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat dissipation member is attached along the outer circumference surface of the coil, then heat dissipation is attempted, but the curvature radius mismatch creates gaps that reduce heat transfer efficiency
Solution Approach 1:
The invention changes the contact surface from a curved outer circumference to a flat side surface. The heat transfer member is configured to contact the flat side surface of the coil winding, eliminating curvature mismatch issues and ensuring reliable thermal contact without gaps.
2Temperature
If heat dissipation is improved by better contact, then cooling performance increases, but the coil structure and winding density may be constrained
Solution Approach 1:
The invention segments the heat transfer function by placing heat transfer members in the gaps between adjacent coils rather than wrapping around each coil. This approach simplifies the coil winding structure while still providing effective heat dissipation through the side surfaces of multiple coils.
3Productivity
If more current is circulated through the coil to increase moving speed, then productivity increases, but heat generation increases and may cause coil burnout
Solution Approach 1:
The heat transfer member acts as an intermediary between the coil and the heat dissipation member. It ensures efficient thermal coupling, allowing higher currents to be circulated for increased moving speed without causing coil burnout, as the heat is effectively conducted away through the heat transfer path.
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 improves cooling performance by ensuring reliable heat transfer and dissipation, increasing the quantity of windings and magnetic force, thus enhancing the moving speed of the linear motor.
Implementation Method 1
the heat transfer member of claim 1 is a heat pipe comprising a heat collection section flat in the coil diameter direction and heat dissipation section which contacts the heat collecting section and protrudes in a direction away from the coil
Implementation Method 2
the working fluid in the heat collection section contacting the side surface of the coil evaporates and absorbs latent heat
Implementation Method 3
the working fluid condenses and releases latent heat
Implementation Method 4
the working fluid in the heat collection section contacting the side surface of the coil evaporates and absorbs latent heat, the evaporated working fluid is cooled by the heat dissipation member when it moves to the heat dissipation section, and the working fluid condenses and releases latent heat
Implementation Method 5
heat generated by the coil is reliably transferred by the heat transfer member, heat generated by the coil is reliably dissipated via the heat transfer member
Data Source
AI summary
A linear motor with enhanced cooling performance, including: a stator including multiple magnetic force generating members provided in a row; a moving element including multiple coils provided in a row in an axis line direction of the stator and wound around an outside of the stator; and a heat transfer member dissipating heat generated by the coil which is between adjacent coils and along a side of the coils.