Emc cooling device
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Cooling devices face EMC compatibility issues due to the large number of radiation-emitting electrical components, which complicates shielding measures and contradicts the trend towards scalable and compact designs, especially when accommodating multiple electrically operated machines within a single housing.
Innovation Solution
The cooling device integrates electrically operated units, such as fans and a compressor, directly into a frequency converter's supply, eliminating the need for separate power supply units and employing interference compensation through destructive interference to reduce EMC interference levels, allowing for modular design and improved shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate power supplies are used for each electrical component, then each component can be independently powered, but the component count increases and EMC properties deteriorate
Solution Approach 1:
The patent combines multiple separate power supplies into a single centralized power supply unit that serves all electrical components (compressor, fans, control units). This merging reduces the overall component count and minimizes the number of power supply cables and connections, thereby improving EMC properties by reducing interference sources while maintaining reliable power distribution to all components.
2Adaptability or versatility
If numerous electrically emitting devices are housed in a compact enclosure, then the device achieves scalability and modularity, but electromagnetic field amplification occurs through coupling effects
Solution Approach 1:
The patent extracts and separates the power supply function into a dedicated centralized unit, removing it from direct proximity to sensitive control electronics. This spatial separation reduces capacitive and inductive coupling between power cables and signal cables, thereby mitigating electromagnetic field amplification while preserving the compact modular design of the cooling device.
3Ease of operation
If separate power packs are used for each fan, then fan operation can be independently controlled, but the number of components increases and installation complexity increases
Solution Approach 1:
The patent implements a universal centralized power supply that can independently control multiple fans through separate control circuits. This single power supply unit serves multiple functions: powering the compressor, multiple fans, and control units, while maintaining independent control capability for each fan through electronic control signals, thereby reducing component count without sacrificing operational flexibility.
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 approach reduces the number of components, lowers EMC interference, enhances operational reliability, and enables flexible voltage use, ensuring that interference levels remain below the lowest immunity level, thus improving overall EMC properties and system resilience.
Implementation Method 1
a converter (preferably a frequency converter) and several electrically operated units or working machines within the EMC enclosure
Implementation Method 2
a cooling device (1) comprising a metallic and/or electrically conductive EMC enclosure (2)
Implementation Method 3
conducted and/or field-bound disturbances specifically generated by this unit during the operation of the cooling device (1)
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a cooling apparatus (1) comprising a metal and/or electrically conductive EMC enclosure (2) and a converter (E1) and also a plurality of electrically operated units (E2,..., En) within the EMC enclosure (2) which are designed to influence a local temperature in at least one region (30, 31) inside or outside the EMC enclosure (2), wherein the converter (E1) directly supplies at least one or more of the units (E2,..., En) with a respective supply voltage, and wherein the converter (E1) and the units (E2,..., En) are each designed such that the line-bound and/or field-bound interference (Sxy) which is specifically generated by this unit during operation of the cooling apparatus (1) is compensated for by a line-bound and/or field-bound interference (Sxy) of at least one of the respectively other units (E1,..., En) partially or completely in terms of its respective interference level (Pn).