Linear Motor Cold Plate With Diaphragm Segmented Chambers
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Solution Overview
Problem
Existing cold plates for linear motors either compromise on space factor and maximum power due to cooling channel designs or are complex and expensive to produce, failing to provide efficient and economical heat dissipation.
Innovation Solution
A cold plate with a planar housing divided into two chambers by a diaphragm, featuring nozzles that create a turbulent coolant flow to effectively cool the motor's primary part, while maintaining a simple configuration and minimizing production variance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling channels are provided between the teeth of the iron core, then cooling effect is improved, but space factor is reduced and maximum power is lowered
Solution Approach 1:
The invention moves the cooling channels from the lateral spaces between teeth to the back side of the iron core, utilizing the unused rear surface area. This dimensional relocation allows cooling without compromising the space factor between teeth, resolving the contradiction between cooling effectiveness and space utilization.
Solution Approach 2:
The cooling system is segmented into multiple independent channels on the back side of the iron core, allowing separate coolant flow paths that can be optimized independently. This segmentation enables effective cooling distribution without requiring complex interleaved channels that would reduce space factor.
2Temperature
If serpentine-type cooling channels are used on the back side of the frame, then cooling effect is improved, but production complexity increases due to frequent direction changes
Solution Approach 1:
Instead of a single serpentine channel with multiple direction changes, the cooling system is divided into multiple straight parallel channels. Each channel maintains a simple linear path from inlet to outlet, eliminating the need for frequent milling direction changes while still providing distributed cooling across the back side of the iron core.
Solution Approach 2:
Rather than following the conventional serpentine path that requires complex milling operations, the invention inverts the approach by using multiple straight channels. This inversion simplifies the manufacturing process while achieving the same cooling distribution effect.
3Temperature
If a complex cold plate design with multiple chambers is used, then heat dissipation is improved, but device complexity and production cost increase
Solution Approach 1:
The invention merges the cooling function directly into the frame structure itself, making the frame the cold plate. The cooling channels are integrated into the frame's back side, eliminating the need for separate complex multi-chamber cold plate components. This integration achieves effective heat dissipation while simplifying the overall device structure and reducing production costs.
Solution Approach 2:
The frame serves multiple functions simultaneously: it provides structural support for the iron core and houses the cooling channels within its own structure. This multi-functionality eliminates the need for separate dedicated cooling components, reducing device complexity while maintaining effective heat dissipation.
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 cold plate achieves excellent heat dissipation with a turbulent flow, shielding machine parts from heat input and preventing thermal expansion issues, while being more economical and simpler to produce than conventional designs.
Implementation Method 1
The nozzles are arranged such that the cooled surface is cooled with the aid of a turbulent flow of the coolant. In the process, each nozzle generates a coolant jet that impinges upon the cooled surface.
Implementation Method 2
a coolant flowing with turbulence is better able to absorb heat than a coolant featuring a laminar flow
Implementation Method 3
a planar housing having a cooled surface to be placed against a surface to be cooled
Data Source
AI summary
A cold plate for a linear motor includes a planar housing having a cooled surface for placement against a surface to be cooled, and first and second chambers arranged in the housing, which extend parallel to the cooled surface and are separated by a diaphragm. The housing has two half-shells and the diaphragm, which is disposed between the half-shells and is connected to the two half-shells. The first chamber, facing away from the cooled surface, is connected to a coolant inlet, and the second chamber, bounded by the cooled surface, is connected to a coolant outlet.