Double-Filter Vent Structure for Power Converter Housing Openings
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Power conversion apparatuses face challenges in preventing the inflow of foreign substances, including moisture and dust, through openings in the housing, which can lead to component failure.
Innovation Solution
A power conversion apparatus with a filter module that includes a first filter and a second filter, where the first filter has multiple filter units with inclined surfaces and the second filter has through holes, is coupled to the opening of the housing to prevent foreign substances from entering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If an opening is formed in the housing for heat dissipation, then heat dissipation efficiency is improved, but foreign substances including moisture and dust may flow into the housing causing component failure
Solution Approach 1:
The patent applies porous filter materials (first filter and second filter) to the opening in the housing. These porous filters allow air to pass through for heat dissipation while blocking foreign substances including moisture and dust from entering the housing and damaging electronic components.
Solution Approach 2:
The patent introduces filter modules as intermediary elements between the external environment and the housing interior. The first filter and second filter act as mediators that permit necessary air flow for cooling while preventing harmful foreign substances from reaching the electronic components inside the housing.
2Object-affected harmful factors
If a filter module is coupled to the opening to prevent foreign substances from entering, then protection of electronic components is improved, but air flow path for heat dissipation may be restricted
Solution Approach 1:
The patent segments the filter system into multiple components: a first filter with filter units and a second filter with through holes. This segmentation allows each filter layer to be optimized for different functions - the first filter provides primary filtration while maintaining flow, and the second filter provides additional protection without significantly restricting air flow.
Solution Approach 2:
The patent incorporates inclined surfaces on the filter units that extend in the vertical direction, creating a three-dimensional structure. This dimensional approach allows the filters to be arranged at angles that optimize both filtration effectiveness and air flow characteristics, preventing foreign substances while maintaining adequate heat dissipation.
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 double filter structure effectively prevents moisture and foreign substances from entering the housing while maintaining an air flow path for heat dissipation, thereby protecting the electronic components.
Implementation Method 1
a filter module being coupled to the opening, wherein the filter module includes a first filter and a second filter
Data Source
AI summary
A power conversion apparatus comprises: a housing including an opening; and a filter module coupled to the opening, wherein the filter module includes: a first filter; a second filter disposed inside the first filter; and a frame coupled to side surfaces of the first filter and the second filter, the first filter includes a plurality of filter units spaced apart in the vertical direction, and an upper surface of the filter unit has an inclined surface formed thereon such that the distance to a bottom surface of the housing becomes closer toward the outside.