Magnetic Resonance Electronics Cooling via Sealed Cold Distributor

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Solution Overview

Problem

Magnetic resonance apparatuses face challenges with heat dissipation in compact electronic devices due to power loss, leading to heating issues and potential contamination from air-borne particles, and existing convection cooling methods are inefficient and prone to contamination.

Innovation Solution

A closed electronics device with a flat cold distributor and blower for air circulation, using externally supplied coolant for efficient cooling, eliminating the need for external ventilation and reducing contamination risks by creating a self-contained cooling system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If convection cooling with ventilation slits is used, then heat dissipation is achieved, but contamination from dust and particles occurs

Engineering Contradiction:
Improveheat dissipationVSAvoidcontamination
Core Design Contradiction:
TemperatureVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the harmful air circulation path from the system by removing ventilation slits and air inlet openings. Instead of allowing external air to enter and circulate through the electronics device, the invention creates a sealed environment where heat is dissipated through the magnet cooling system alone, thereby eliminating contamination from dust and particles while maintaining heat dissipation capability.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces a heat transfer intermediary mechanism - the magnet cooling system - that serves as an alternative heat dissipation path. This intermediary system absorbs heat from the electronics device without requiring air circulation, thus preventing contamination while effectively managing thermal energy through the cooling medium already present in the magnet system.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Temperature

If air circulation channels are provided for convection cooling, then heat dissipation is improved, but water condensation problems occur during coolant refilling or magnet quench

Engineering Contradiction:
Improveheat dissipationVSAvoidwater condensation
Core Design Contradiction:
TemperatureVSObject-affected harmful factors

Solution Approach 1:

The patent removes the air circulation channels and ventilation openings that create condensation problems. By sealing the electronics device housing and eliminating air inlet/exit openings, the invention prevents water condensation during coolant refilling or magnet quench events while maintaining heat dissipation through the magnet cooling system's thermal conduction path.

Inventive Principle:
Principle #2Taking out (Extraction)

3Volume of moving object

If electronic components are bundled into compact devices, then space utilization is improved, but heat dissipation becomes more difficult

Engineering Contradiction:
Improvespace utilizationVSAvoidheat dissipation
Core Design Contradiction:
Volume of moving objectVSTemperature

Solution Approach 1:

The patent merges the electronics device with the magnet cooling system's thermal management capability. By integrating the electronics housing with the magnet cooling infrastructure and using the same cooling medium (liquid coolant) for both magnet cooling and electronics heat dissipation, the invention achieves effective heat removal from compact electronic assemblies without requiring separate cooling systems.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent uses the magnet cooling system's liquid coolant as an intermediary heat transfer medium for the electronics device. This intermediary system provides efficient thermal conduction from the compact electronic components directly to the cooling system, enabling effective heat dissipation in space-constrained configurations without requiring additional air circulation infrastructure.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 solution provides effective heat dissipation through a combined coolant and air cooling system, preventing overheating and contamination, while maintaining a sealed environment to shield against magnetic fields and optimize space usage.

Implementation Method 1

Coolant supplied from the outside, for example water, thus circulates through the cold distributor located inside the housing

Methodology Applied
Scientific EffectHeat transfer: Conduction (thermal)

Implementation Method 2

it is designed sufficiently large with regard to the emission of thermal energy

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 3

A blower to circulate the air inside the housing is also provided. A continuous air circulation inside the housing is realized via this, meaning that a forced current is generated that leads to the situation that the heated air emitted by the electronic components in operation is moved and streams past the cold distributor

Methodology Applied
Scientific EffectForced convection: Forced Convection

Implementation Method 4

The blower or the cross-stream fan impeller or the actuator thereof can be a miniature Francis turbine. After leaving the cold distributor, the coolant flows to the drive turbine of the fan impeller or the cross-stream blower, drives this

Methodology Applied
Scientific EffectTurbine: Turbine

Data Source

PatentUS7821268B2Electronic device for a magnetic resonance apparatus
Publication Date: 2010.10.26 SIEMENS HEALTHINEERS AG
  • US7821268B2 patent drawing
  • US7821268B2 patent drawing
  • US7821268B2 patent drawing

AI summary

An electronics device for a magnetic resonance apparatus has a housing in which one or more electronic components to be cooled are accommodated, with a flat cold distributor provided in the housing that can be supplied with an externally fed coolant, and that is associated with a blower to circulate the air inside the housing.