Ship Ventilation Duct Above Inlet Prevents Water Ingress
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Solution Overview
Problem
Ships, especially cargo ships, face challenges in ventilation due to dense cargo loading and limited space, which is exacerbated by the need to minimize hull openings to prevent water ingress, leading to issues with rainwater and splash water entering ventilation systems, and existing solutions are often maintenance-intensive and prone to failure in salty seawater.
Innovation Solution
A ventilation system with a duct section located above the air inlet, allowing air to be introduced into the hold while preventing rainwater and splash water from entering, featuring adjustable air inlets and outlets, and optionally incorporating features like grilles, pumps, and automatic control for efficient ventilation and water removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional ventilation pipes are routed on deck with covers or angled air inlets to prevent rainwater ingress, then water protection is improved, but the system becomes complex and maintenance-intensive
Solution Approach 1:
The air inlet is positioned in the outer wall at a height above the deck level, transitioning from horizontal deck-mounted ventilation to vertical wall-mounted ventilation. This dimensional change allows air to be drawn from above the deck, naturally preventing rainwater and splash water from entering the ventilation system without requiring complex covers or valves.
2Object-affected harmful factors
If the hull has few openings to prevent water ingress, then water protection is improved, but ventilation capability deteriorates
Solution Approach 1:
The outer wall is designed with a specific local structure that includes an air inlet positioned above the deck level and a duct extending downwards into the hold. This localized structural feature allows the hull to maintain its overall integrity with minimal openings while providing effective ventilation through the strategically positioned air inlet that draws air from above the water level.
3Object-affected harmful factors
If air inlets are positioned in lateral outer sections away from the water surface, then water protection is improved, but space utilization deteriorates
Solution Approach 1:
The air inlet is moved from the deck surface to the outer wall at a height above the deck, utilizing the vertical dimension rather than horizontal space. This allows air to be drawn from above the deck level, keeping the deck surface clear for cargo stowage while maintaining effective ventilation and water protection.
Data Source
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AI summary
The invention relates to a ship (1) comprising at least one cargo space (5, 6, 7, 8) and at least one ventilation device (11) for ventilating the cargo space, said ventilation device (11) including at least one air inlet (21) and at least one air outlet (23, 25, 27) that is connected to the air inlet via a duct (13). The invention particularly relates to a ship (1) comprising a ventilation device (11), wherein the duct (13) has at least one section (17) that is arranged above the air inlet (21). The invention further relates to a ventilation device (11) for ventilating the cargo space on a ship (1).