Heat Pipe Cooling for Electronic Components

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Solution Overview

Problem

Current cooling systems for electronic components in metal cabinets or racks require large refrigeration systems and pumps, consuming significant electrical energy and lacking efficient heat dissipation methods, especially for direct outdoor heat transfer from multiple electronic elements.

Innovation Solution

A cooling system utilizing a network of heat pipes with a first phase transition fluid to maintain electronic components at a preset temperature, transferring heat to a secondary cooling fluid circuit that dissipates heat directly outdoors through a heat sink, eliminating the need for pumps and refrigeration systems by leveraging the temperature difference between the components and outdoor air.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If refrigeration systems and pumps are used for cooling electronic components, then the electronic components can be maintained at optimal temperature, but electrical energy consumption increases significantly

Engineering Contradiction:
Improveelectronic component temperatureVSAvoidelectrical energy consumption
Core Design Contradiction:
TemperatureVSUse of energy by moving object

Solution Approach 1:

The invention extracts the heat directly from the electronic components through heat pipes and transports it outdoors to be dissipated to the ambient air, separating the heat extraction function from the traditional refrigeration system. This eliminates the need for energy-consuming refrigeration cycles and pumps while maintaining effective cooling.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The invention introduces heat pipes as an intermediary substance that transfers heat from the electronic components to the outdoor environment. The heat pipe fluid circulates between the indoor heat source and outdoor heat sink, enabling direct heat transfer without requiring electrical energy for compression or refrigeration.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Temperature

If refrigeration systems are used for heat dissipation, then electronic components can be cooled effectively, but the system size and complexity increase

Engineering Contradiction:
Improveelectronic component temperatureVSAvoidcooling system complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The invention removes the complex refrigeration system, compressors, and associated machinery from the cooling setup. Instead, it uses passive heat pipes that rely on natural phase change and buoyancy-driven circulation, dramatically simplifying the system architecture while maintaining cooling effectiveness.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The heat pipe system is self-regulating and requires no external control or power input. The phase change fluid automatically circulates based on temperature differences and gravity, with the system adapting its operation to the thermal load without mechanical intervention or complex control systems.

Inventive Principle:
Principle #25Self-service

3Temperature

If heat is transferred to room air through air conditioning systems, then electronic components can be cooled, but large quantities of electrical energy are consumed

Engineering Contradiction:
Improveroom air temperatureVSAvoidelectrical energy consumption
Core Design Contradiction:
TemperatureVSUse of energy by moving object

Solution Approach 1:

The invention extracts heat directly from the electronic components and transports it outdoors before it can raise the room temperature. By routing heat away from the indoor environment through heat pipes, the need for air conditioning systems and their associated energy consumption is eliminated entirely.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of cooling the room air and then cooling the components (traditional air conditioning approach), the invention inverts the approach by directly removing heat from the components and dissipating it outdoors, eliminating the need for intermediate room air cooling.

Inventive Principle:
Principle #13The other way round (Inversion)

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 system efficiently dissipates heat from multiple electronic elements directly outdoors, reducing electrical energy consumption and maintaining optimal component temperatures without the need for large refrigeration systems or pumps, while allowing for easy maintenance and reduced space requirements.

Implementation Method 1

the heat pipe, which references the natural cycle of the evaporation of the water forced by solar heating, transfers the heat from a hot source (i.e. electronic components which work generally at 60°C) to a cooling means via the change of state from liquid to vapour of a low boiling fluid circulating inside a closed circuit, and the successive condensation inside this closed circuit

Methodology Applied
Scientific EffectPhase transition: Phase Change

Implementation Method 2

the heat pipe...transfers the heat from a hot source...via the change of state from liquid to vapour of a low boiling fluid

Methodology Applied
Scientific EffectEvaporation: Evaporation

Implementation Method 3

the change of state from liquid to vapour of a low boiling fluid circulating inside a closed circuit, and the successive condensation inside this closed circuit

Methodology Applied
Scientific EffectCondensation: Condensation

Implementation Method 4

The heat pipe is a closed pipe having a system of heat exchange which can transport large quantities of heat with a very small difference in temperature between the hot and cold interfaces

Methodology Applied
Scientific EffectHeat pipe: Heat Pipe

Implementation Method 5

a secondary cooling fluid, the same as said first fluid, intended to transfer directly to the outside (outdoors) the heat transferred by said first fluid

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 6

transferring said heat directly to the exterior of the closed room containing said electronic components

Methodology Applied
Scientific EffectConvection: Convection

Data Source

PatentEP3324716B1System for the cooling of heat-producing electronic components
Publication Date: 2022.01.19 CACIOLLI RODOLFO
  • EP3324716B1 patent drawingFigure 1a
  • EP3324716B1 patent drawingFigure 1b
  • EP3324716B1 patent drawingFigure 2a

AI summary

A description is given of a system for the cooling of heat-producing metal elements, in particular of electronic components contained in metal cabinets or racks contained in a room (50), comprising a first phase transition fluid, intended to cool said heat-producing elements housed in at least one of said drawers in order to remove the heat generated by said drawer and maintain it at a preset temperature, said first fluid circulating in a first fluid circuit a secondary cooling fluid, the same as or different from said first fluid, intended to transfer directly to the outside the heat transmitted by said first fluid, said secondary cooling fluid being circulating in a second fluid circuit which includes a heat sink placed outside of the room said first and second fluid circuits being able to be closed, hydraulically independent one from the other and in thermally conductive contact, or be in fluid communication one with the other so as to form a single heat pipe connected to said heat sink placed outside.