Projection Device Liquid Cooling Airflow Segmentation
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Solution Overview
Problem
Existing solid-state light source projectors face challenges with increased system noise and volume due to the need for higher fan speeds at air outlets to maintain radiator flow, which is exacerbated by additional air inlets required for heat dissipation, leading to suboptimal cooling and image quality.
Innovation Solution
A projection device design featuring a housing with a liquid cooling module adjacent to the air outlet, a first fan group between the heat exchanger and air outlet, and optimized air inlet and outlet areas to ensure air passes through cooling fins before discharge, reducing fan speed and system volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If system fans are disposed at the air outlet to maintain radiator flow, then cooling effect is improved, but system noise increases due to required higher fan speeds
Solution Approach 1:
The air outlet is divided into multiple air outlet areas, with at least one air outlet area disposed at each side of the heat exchanger. This segmentation allows for distributed airflow management, reducing the burden on individual fans and enabling lower operating speeds while maintaining effective cooling.
Solution Approach 2:
Different regions of the housing have different functional characteristics: air inlets are positioned at specific locations (front surface, rear surface, or side surfaces) to create localized airflow patterns that optimize cooling efficiency while reducing the overall fan speed requirement.
2Temperature
If additional air inlets are added for heat dissipation from heating elements, then cooling coverage is improved, but system volume increases
Solution Approach 1:
The housing structure integrates multiple functions: it provides structural enclosure, defines airflow paths, positions cooling components, and manages thermal dissipation. The air inlet and outlet configurations serve both cooling and structural purposes, eliminating the need for additional dedicated components that would increase volume.
Solution Approach 2:
Air outlets are disposed at both sides of the heat exchanger in addition to traditional front/rear configurations. This spatial arrangement in multiple dimensions allows for efficient heat dissipation without requiring increased system volume, as the airflow paths are optimized in three-dimensional space.
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 design enhances cooling efficiency, reduces noise by 5 dB(A), and decreases system volume by 25% while maintaining brightness performance, resulting in improved image quality and reduced overheating risks in multi-device setups.
Implementation Method 1
The liquid cooling module includes a heat exchanger, and the heat exchanger is adjacent to the air outlet of the air outlet side plate and includes a cooling fin set
Implementation Method 2
The first fan group is located between the heat exchanger and the air outlet... ensure that the air volume entering the projection device passes through the cooling fin set of the heat exchanger
Data Source
AI summary
A projection device includes a housing, and a light source module, an optical engine module, a liquid cooling module, a first fan group and a projection lens disposed in an accommodating space. A light emitting side plate, an air outlet side plate, and a first and a second side plate surround the accommodating space. The air outlet side plate has an air outlet, and at least one of the light emitting side plate, and the first and the second side plate has at least one air inlet. The liquid cooling module includes a heat exchanger. The first fan group is located between the heat exchanger and the air outlet. An orthographic projection area of the cooling fin set of the heat exchanger on the air outlet side plate is smaller than or equal to an orthographic projection area of the first fan group on the air outlet side plate.