Projector Intake Chamber Partitioning to Prevent Fan Backflow
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Solution Overview
Problem
In projectors with multiple intake fans of differing output air volumes in a single intake chamber, backflow occurs when a smaller fan's intake is obstructed, leading to insufficient cooling and potential operation failures.
Innovation Solution
A projector design with a partitioned intake chamber housing a first fan of higher intake capacity than a second fan, separated by a partition, and a single filter, ensuring efficient cooling and preventing backflow even with filter clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple intake fans of different output air volumes are disposed in one intake chamber, then the device complexity is reduced, but backflow occurs when filter clogging happens, causing cooling failure
Solution Approach 1:
The intake chamber is divided into multiple independent spaces using partitions, with each fan assigned to its own dedicated space. This segmentation prevents air flow interference between fans of different capacities, eliminating the backflow problem while maintaining a relatively simple overall structure.
2Ease of manufacture
If a single filter is used for multiple fans, then the manufacturing cost is reduced, but filter clogging causes backflow in smaller fans
Solution Approach 1:
The single filter is divided into multiple filter sections corresponding to each fan space, with each section serving a specific fan. This allows independent filtration for each fan while using a single integrated filter assembly, preventing cross-contamination of air flows and eliminating backflow issues.
3Device complexity
If fans of different intake capacities share the same intake space, then the device complexity is reduced, but the smaller fan cannot function properly when clogging occurs
Solution Approach 1:
The intake chamber is segmented into separate spaces for each fan, allowing each fan to operate independently with its own dedicated air intake path. This ensures that fans of different capacities can maintain their respective cooling performances without interfering with each other, even when filter clogging occurs.
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 design maintains stable cooling of optical components by preventing backflow and accurately detecting filter clogging, reducing maintenance complexity and component costs.
Implementation Method 1
a filter that captures foreign matter such as dust contained in the outside air is disposed in the intake port
Implementation Method 2
optical components are cooled by outside air taken into an intake chamber provided with a plurality of intake fans
Data Source
AI summary
A projector according to the present disclosure includes an exterior housing having an intake port through which air is taken inside, and forming an exterior, a filter attached to the intake port, an intake chamber configured to take in the air through the filter, a first fan and a second fan disposed in the intake chamber, and a partition configured to partition a first space in which the first fan is disposed and a second space in which the second fan is disposed in the intake chamber, wherein an intake capacity of the first fan is higher than an intake capacity of the second fan.