Optical Transceiver Housing with Mesh Air Intake for Thermal Management

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Solution Overview

Problem

Existing optical transceivers face challenges in efficiently cooling heat-generating components, such as semiconductor lasers and photodetectors, within a compact form-factor, which can lead to thermal management issues and reduced performance.

Innovation Solution

The optical transceiver incorporates a housing with a mesh member and grooves that facilitate air intake and heat dissipation, allowing outside air to be drawn in for cooling and directing airflow through the device, while also minimizing electromagnetic wave leakage through the use of small-diameter, mesh-pattern through holes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If a compact form-factor is used for the optical transceiver, then the device size is reduced and easier to install, but the heat dissipation capability deteriorates

Engineering Contradiction:
Improvedevice sizeVSAvoidheat dissipation capability
Core Design Contradiction:
Volume of moving objectVSTemperature

Solution Approach 1:

The housing is segmented into multiple functional regions: an air intake portion with mesh holes for cooling, a heat dissipation portion with grooves for thermal management, and an electromagnetic wave shielding portion with small holes for EMI protection. This segmentation allows each region to optimize its specific function while maintaining overall compactness.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different portions of the housing are given different local qualities: the air intake portion has large mesh holes for airflow, the heat dissipation portion has grooves for thermal convection, and the electromagnetic wave shielding portion has small holes for EMI blocking. This local differentiation resolves the contradiction by allowing compact design in areas where it doesn't compromise thermal management.

Inventive Principle:
Principle #3Local quality

2Temperature

If large through holes are used for air intake, then cooling efficiency is improved, but electromagnetic wave leakage increases

Engineering Contradiction:
Improvecooling efficiencyVSAvoidelectromagnetic wave leakage
Core Design Contradiction:
TemperatureVSObject-generated harmful factors

Solution Approach 1:

The housing is divided into distinct functional zones: an air intake portion with larger mesh holes for cooling, and an electromagnetic wave shielding portion with smaller holes for EMI protection. This segmentation allows different hole sizes in different locations to serve different purposes without compromising either function.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The housing exhibits local quality differentiation where the air intake portion has larger holes optimized for airflow, while the electromagnetic wave shielding portion has smaller holes optimized for EMI blocking. This local optimization resolves the contradiction by allowing different through hole sizes in different regions based on their specific functional requirements.

Inventive Principle:
Principle #3Local quality

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 configuration effectively cools the internal components, enhances electromagnetic compatibility, and maintains efficient operation even with high-frequency signals, reducing the risk of thermal overload and electromagnetic interference.

Implementation Method 1

an air intake part configured to bring an outside air into the internal space for cooling the device

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 2

The heat sink is made of a material that has a high thermal conductivity, such as aluminum or copper

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS11194106B2Optical transceiver
Publication Date: 2021.12.07 SUMITOMO ELECTRIC INDUSTRIES LTD
  • US11194106B2 patent drawing
  • US11194106B2 patent drawing
  • US11194106B2 patent drawing

AI summary

An optical transceiver according to an aspect of the present embodiment is an optical transceiver configured to be inserted to and extracted from a cage of an apparatus along a first direction. The optical transceiver includes a device generating heat, and a housing having a rectangular parallelepiped shape with long sides extending along the first direction. The housing includes an internal space housing the device, and an outside part configured to be exposed to an outside of the cage. When the housing is engaged with the cage, the outside part having an air intake part configured to bring an outside air into the internal space for cooling the device.