Blower Case Flow Path Fixing for Air Leakage Reduction
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Solution Overview
Problem
Existing blower devices do not effectively utilize blown air for cooling heat generating components, leading to inefficiencies in heat dissipation and potential air leakage, which can increase noise and reduce cooling performance.
Innovation Solution
A blower device design featuring a fan, motor, and a case with a flow path portion that guides blown air to a heat generating component, incorporating a fixing portion within the inner peripheral edge of an opening to close and secure the flow path, reducing air leakage and noise while enhancing heat dissipation by minimizing pressure loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a closing member is used to close the opening on the flow path portion, then air leakage is reduced and cooling performance is improved, but the device complexity increases due to additional components and assembly requirements
Solution Approach 1:
The closing member is integrated with the case structure, merging the closing function into the existing case design. This integration reduces the number of separate components while maintaining the air sealing function, thereby improving cooling performance without proportionally increasing device complexity.
Solution Approach 2:
The closing member serves multiple functions: it closes the opening to prevent air leakage, provides a mounting surface for the fixing portion, and contributes to the overall structural integrity of the case. This multi-functionality reduces the need for additional specialized components.
2Object-affected harmful factors
If the fixing portion is located inside the inner peripheral edge of the opening, then air leakage is minimized and noise is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The fixing portion is strategically positioned at a specific location within the inner peripheral edge of the opening, creating a localized high-precision zone. This local quality approach concentrates manufacturing precision requirements to a specific critical area rather than distributing them throughout the entire component, making the precision requirement more manageable.
Solution Approach 2:
The fixing portion acts as an intermediary element between the closing member and the flow path portion, mediating the connection to ensure proper positioning and sealing. This intermediary structure facilitates precise alignment and reduces the direct impact of manufacturing tolerances on air leakage and noise.
3Temperature
If the flow path portion is properly designed to guide blown air to the heat generating component, then heat dissipation is improved, but the device complexity increases due to additional flow path structures
Solution Approach 1:
The flow path portion is segmented into distinct sections that guide air flow in a controlled manner from the fan to the heat generating component. This segmentation allows for optimized air flow at each stage while keeping individual segments relatively simple in structure, balancing heat dissipation efficiency with structural simplicity.
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 effectively promotes heat dissipation of heat generating components by minimizing air leakage and noise, improving the cooling performance and workability of the blower device.
Implementation Method 1
a flow path portion that guides blown air, generated by rotation of the fan, to the heat generating component
Implementation Method 2
blown air generated by the rotation of the fan is partially used for cooling a heat generating component
Implementation Method 3
heat generating component housed in the case
Data Source
AI summary
A blower device includes: a fan; a motor rotating the fan; a case supporting the motor; and a heat generating component housed in the case, wherein the case includes: a main body member defining a flow path portion that guides blown air, generated by rotation of the fan, to the heat generating component; and a closing member closing an opening formed on the flow path portion, the main body member includes a fixing portion provided on the flow path portion and fixing the closing member, and the fixing portion is located inside an inner peripheral edge of the opening.