Motor Housing Electronics Cooling for Electric Wall Saws
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Solution Overview
Problem
Existing electric wall saws require complex cooling systems for both diamond tools and electronic components, leading to large and heavy tool assemblies and an increased risk of short circuits due to moisture exposure.
Innovation Solution
The electronic components are cooled directly through the motor housing with integrated cooling surfaces and holes, reducing the number of sealing points and the risk of moisture damage, allowing for a more compact and lightweight design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling plate with cooling channels is used to cool the electronics assembly, then the electronics can be cooled effectively, but the number of components increases and the risk of short circuits due to moisture exposure increases
Solution Approach 1:
The patent merges the electronics cooling function with the existing motor housing structure. The motor housing is equipped with cooling surfaces and cooling holes that directly cool the electronics assembly, eliminating the need for a separate cooling plate with cooling channels. This integration reduces the number of components while maintaining effective cooling of the electronics.
2Temperature
If a cooling plate with cooling channels is used to cool the electronics assembly, then the electronics can be cooled effectively, but the risk of short circuits due to moisture exposure increases
Solution Approach 1:
The patent extracts the electronics assembly from the direct path of the cooling medium flow. Instead of allowing the cooling medium to flow through channels within or near the electronics (as with a cooling plate), the electronics are cooled through thermal conduction via contact with the motor housing cooling surfaces, while the cooling medium flows through separate cooling holes. This separation eliminates the risk of moisture-induced short circuits while maintaining cooling effectiveness.
3Temperature
If air cooling of the motors and power electronics is used, then the motors can be cooled, but the tool assembly becomes very large and heavy
Solution Approach 1:
The patent combines the motor cooling and electronics cooling functions into a single integrated cooling system using liquid cooling. The motor housing serves as a heat exchanger with cooling channels and cooling holes that cool both the motor and the electronics assembly simultaneously. This liquid cooling integration eliminates the need for separate, bulky air cooling systems, significantly reducing the overall size and weight of the tool assembly.
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 solution simplifies the cooling process, reduces the risk of short circuits, and enables a smaller and lighter power tool by utilizing the motor housing for heat transfer and minimizing exposure to cooling media.
Implementation Method 1
The electronic components of the electronics assembly to be cooled are cooled via the motor housing with integrated cooling surfaces and holes... the cooling medium flows through the cooling element
Data Source
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AI summary
Electric tool device (1) for processing a substrate (4) consisting of a tool (7) rotatable about an axis of rotation (11), a motor assembly (17) with at least one motor (20) rotating the tool (7) about the axis of rotation (11), a motor housing (16) with at least one receiving space (30) for the at least one motor (20), a cooling element (33) for cooling the at least one motor (20), an electronics assembly (18) with at least one electronic component to be cooled, wherein the cooling of the at least one electronic component to be cooled is carried out via the motor housing (16).