Substrate-Integrated Pump for Dielectric Coolant Circulation

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Solution Overview

Problem

Existing electronic devices face challenges in effectively cooling heat-generating components, especially in portable devices where space and energy efficiency are critical, and there is a need for a self-contained cooling system that can manage heat without external mechanisms.

Innovation Solution

The implementation of a sealed housing with a unidirectional pump and dielectric coolant circulation loop, where the pump generates a single-directional fluid flow to cool heat-generating components and reject heat passively or actively through a heat exchange portion, allowing for internal cooling without external cooling devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a cooling system is added to manage heat in electronic devices, then the temperature control and component longevity improve, but the device complexity and space consumption increase

Engineering Contradiction:

Improveheat managementVSAvoidsystem complexity

Core Design Contradiction:

TemperatureVSDevice complexity

Solution Approach 1:

The pump is integrated directly with the substrate, merging the cooling function with the existing circuit board structure. This eliminates the need for separate cooling components and reduces overall system complexity while maintaining effective heat management

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The substrate serves dual purposes: as the circuit board for electronic components and as the mounting platform for the pump. This multi-functionality reduces the number of separate components needed, thereby reducing device complexity while achieving temperature control

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Temperature

If external cooling mechanisms are used, then heat rejection effectiveness improves, but the portability and energy efficiency deteriorate

Engineering Contradiction:

Improveheat rejectionVSAvoidenergy efficiency

Core Design Contradiction:

TemperatureVSUse of energy by moving object

Solution Approach 1:

The system uses the device's own operational heat to drive the cooling process. The heat-generating components naturally create the temperature differential needed to operate the pump, eliminating the need for separate power sources or external cooling mechanisms

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces traditional mechanically-driven cooling systems with a thermally-driven system. Instead of using motors or external power sources to drive coolant circulation, the system uses thermal energy from the components themselves to create the driving force for fluid flow

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Manufacturing precision

If traditional valves with controlled members are used, then fluid flow control precision improves, but the manufacturing complexity and assembly difficulty increase

Engineering Contradiction:

Improvefluid flow controlVSAvoidmanufacturing simplicity

Core Design Contradiction:

Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The patent removes the complex controlled member (such as a movable valve component) from the traditional valve structure. By extracting this complicated element and replacing it with a simple aperture in a movable member, the manufacturing process becomes significantly simpler while maintaining adequate fluid flow control

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of controlling fluid flow by moving a complex valve component to open/close passages, the invention inverts the approach by using a movable member with apertures that passively respond to fluid pressure. The control is achieved through the position of apertures rather than through active valve mechanisms

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 solution enhances the longevity and performance of electronic components by effectively managing heat within the device, providing a more satisfying user experience and enabling the use of non-dielectric coolants, while simplifying the manufacturing process by integrating the pump with other circuitry on the substrate.

Implementation Method 1

the pump generates a single-directional fluid flow to cool heat-generating components

Methodology Applied

Scientific EffectFluid flow:

Implementation Method 2

dielectric coolant circulation loop, where the pump generates a single-directional fluid flow to cool heat-generating components and reject heat

Methodology Applied

Scientific EffectHeat transfer: Conduction (thermal)

Data Source

PatentUS10100822B2Pump having freely movable member

Publication Date: 2018.10.16 HEWLETT PACKARD DEVELOPMENT COMPANY LP

AI summary

A pump includes a main chamber and a pair of valves on opposite ends of the main chamber. The respective valves each contain a freely movable member to selectively open and close each respective valve, wherein the freely movable member is formed from at least some of the same material used to form a chamber portion of the respective valves. A force applicator is coupled relative to the main chamber to alternately induce a suction action and an expulsion action.