Replaceable Opening Member Airflow Measurement Device
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Solution Overview
Problem
Existing measurement devices struggle to accurately measure airflow volume and ventilation resistance across various ranges, particularly in devices like servers, information base stations, and fans, due to limitations in nozzle design and chamber size, leading to inaccuracies and poor versatility.
Innovation Solution
A measurement device with a housing containing an air duct, a replaceable opening member, pressure sensors to measure air pressures before and after the opening member, and a controller to calculate airflow volume and ventilation resistance, allowing for various opening member configurations to support different airflow ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed nozzle design is used, then the device structure is simple, but the measurement versatility across various airflow ranges is poor
Solution Approach 1:
The patent implements a replaceable opening member mechanism that allows the nozzle opening area to be dynamically adjusted by replacing different opening members with different opening areas. This enables the measurement device to adapt to various airflow ranges by selecting appropriate opening members, thereby improving measurement versatility without requiring a completely different device for each range.
Solution Approach 2:
The patent divides the nozzle into a base structure and replaceable opening members with different opening areas. This segmentation allows users to select specific opening members based on the measurement requirements, providing versatility across different airflow ranges while keeping the base device structure relatively simple and reusable.
2Adaptability or versatility
If the chamber size is increased to support various airflow ranges, then the measurement range is improved, but the device size increases
Solution Approach 1:
Instead of designing a large chamber to accommodate all possible airflow ranges, the patent uses a dynamic opening member replacement system that allows the same chamber to effectively support various airflow ranges by changing the opening member. This maintains a compact device size while achieving versatile measurement capabilities.
3Measurement precision
If the nozzle opening area is changed to match different airflow volumes, then the measurement accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent segments the nozzle into a standardized base structure and interchangeable opening members. Each opening member is designed with a specific opening area optimized for certain airflow ranges. This segmentation allows for accurate measurements across different ranges while keeping the overall device structure simple and the replacement process straightforward.
Solution Approach 2:
The base device structure serves multiple functions and remains universal across different measurement ranges. By keeping the base structure universal and only replacing the opening members, the patent minimizes device complexity while maintaining measurement accuracy across various airflow volumes.
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 device achieves high versatility in measuring airflow volumes and ventilation resistances across various ranges, ensuring accurate measurements and downsizing of the device while maintaining weight reduction and ease of use.
Implementation Method 1
pressure sensors that measure air pressures before and after the air passes through the opening member in the air duct
Data Source
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AI summary
A measurement device for measuring an airflow volume and a ventilation resistance of a wind-blowing apparatus includes: a housing that includes an air duct with an air inlet and an air outlet, the air inlet being configured to take in air, the air outlet being configured to send out the taken air; an opening member installed inside the air duct, the opening member including an opening allowing the air taken from the air inlet to pass therethrough; pressure sensors configured to measure air pressures before and after the air passes through the opening member in the air duct; and an opening member replacing mechanism that forms a part of the air duct, the opening member replacing mechanism being configured to allow the opening member to be replaceable.