Air vent structure and box-type inverter having the same
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Solution Overview
Problem
Conventional air vent structures in box-type inverters face issues with heat dissipation due to hot air backflow, increased system resistance from dust filters, and poor waterproofness, leading to inadequate heat dissipation and potential water ingress in harsh environments.
Innovation Solution
An air vent structure featuring bent plates with specific flat and sloping portions, integrated with a self-hanging louver and screen mesh, designed to direct airflow horizontally and prevent water and dust ingress, ensuring smooth airflow and enhanced waterproofness up to IP65 standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a downward air outlet is used to resist water, then waterproofness is improved, but hot air backflow occurs reducing heat dissipation performance
Solution Approach 1:
The air outlet uses a curved/bent plate structure instead of a straight downward design. The plate includes an upslope portion and a downslope portion forming a curved path that directs hot air horizontally away from the air inlet while maintaining waterproofness. This curvature resolves the contradiction by preventing hot air backflow without compromising water resistance.
2Object-affected harmful factors
If a dust filter is provided at the air outlet to prevent dust entry, then dust resistance is improved, but system resistance increases reducing air volume and heat dissipation
Solution Approach 1:
The bent plate structure with upslope and downslope portions creates a curved airflow path that naturally prevents dust and sand from entering the air inlet. The curved geometry acts as a mechanical filter without adding a separate dust filter component, thus maintaining low system resistance while achieving dust resistance.
3Reliability
If a non-planar or bent air outlet structure is made dense to prevent water jet entry, then waterproofness is improved, but air flow resistance increases significantly
Solution Approach 1:
The air outlet uses a smooth curved plate structure with continuous upslope and downslope portions rather than a dense non-planar structure. This curved design provides adequate waterproofness by directing water away while maintaining smooth airflow with minimal resistance, resolving the contradiction between waterproofness and air flow resistance.
4Object-affected harmful factors
If a self-hanging louver structure is used for air outlet, then some dust resistance is achieved, but waterproofness remains relatively low allowing rain and snow entry
Solution Approach 1:
The curved plate structure with upslope and downslope portions provides superior waterproofness compared to self-hanging louver structures. The continuous curved surface effectively directs rain and snow away from the air inlet while still preventing dust entry, resolving the contradiction by achieving both high waterproofness and dust resistance.
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 air vent structure effectively prevents rain, snow, and dust from entering, maintains smooth airflow, and improves heat dissipation by directing hot air horizontally, while ensuring controllable installation and transportation without field assembly.
Implementation Method 1
multiple plates arranged perpendicular to a direction of gravity... each of the plates comprises a first flat portion, an upslope portion and a downslope portion... the plate then extending upward to form the upslope portion, and wherein a top of the upslope bends downward to form the downslope portion
Implementation Method 2
the air vent structure effectively prevents rain, snow, and dust from entering... the plate then extending upward to form the upslope portion, and wherein a top of the upslope bends downward to form the downslope portion
Data Source
AI summary
An air vent structure includes a frame arranged at an air outlet or an air inlet of a box body, and a plurality of plates. In cross section, each of the plates is a bent structure and includes a first flat portion, an upslope portion and a downslope portion. The first flat portion is fixed to the frame and extends in a direction away from the frame, the plate then extending upward to form the upslope portion. A top of the upslope bends downward to form the downslope portion, and the height of the downslope portion is smaller than the height of the upslope portion. The air vent structure can ensure that hot air flow passes smoothly through the air outlet, and also ensure that the hot air flow is blown out in a horizontal direction. A box-type inverter having the air vent structure is also provided.