Flexible Shutter for Power Conversion Exhaust
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Solution Overview
Problem
Power conversion devices with metal shutters for exhaust ports face issues with shutter shaft deterioration over time, leading to ineffective operation due to the need for wind pressure to rotate the shutter, requiring counterweight adjustments and space, which complicates long-term functionality.
Innovation Solution
A power conversion device with a flexible sheet-shaped shutter that is fixed to the housing and frame body, deforming to create a gap for airflow when the fan is driven, eliminating the need for a shutter shaft and allowing easy operation over a long period without requiring counterweight adjustments or additional space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a metal shutter with shutter shaft is used for the exhaust port, then the shutter can be opened and closed, but the shutter shaft deteriorates over time and the shutter may not operate as designed in long-term use
Solution Approach 1:
The invention removes the shutter shaft from the system entirely. Instead of using a traditional metal shutter with a rotating shaft mechanism, the patent employs a flexible shutter that opens and closes through elastic deformation when wind blows through the exhaust port, eliminating the deteriorating mechanical components
Solution Approach 2:
The invention changes the operational parameter from mechanical rotation to elastic deformation. The flexible shutter utilizes material elasticity and wind pressure to achieve opening/closing functionality, transforming the mechanism from a mechanically-driven system to a wind-responsive elastic system that maintains reliability over time
2Ease of operation
If a metal shutter with counterweight is used to assist opening, then the shutter can open more easily, but additional space is required and the structure becomes more complex
Solution Approach 1:
The invention extracts and removes the counterweight mechanism from the shutter system. The flexible shutter relies on wind pressure and elastic properties to open and close naturally, eliminating the need for additional counterweight components and the space they occupy
Solution Approach 2:
The flexible shutter is self-actuating through wind pressure. When wind blows through the exhaust port, it automatically deforms the shutter to open or close the passage without requiring external mechanical assistance like counterweights, springs, or motors
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 flexible shutter ensures reliable and durable operation of the power conversion device by eliminating shutter shaft deterioration and simplifying installation and maintenance, while enhancing dustproofing and cooling performance by stabilizing the airflow and preventing central bending.
Implementation Method 1
The shutter is configured to be deformed by wind from the fan in a case where the fan is driven and to form a gap through which the wind passes between the shutter and at least one of the housing and the frame body
Data Source
AI summary
A power conversion device includes a housing, a power conversion unit, a fan, and a flexible shutter. The shutter is in a sheet shape. The shutter includes an end portion and a movable portion, the end portion being fixed to at least one of the housing and a frame body, the movable portion being movable with respect to the housing. The shutter is configured to be deformed by wind from the fan in a case where the fan is driven and to form a gap through which the wind passes between the shutter and at least one of the housing and the frame body.