Live Well Vent Baffle Design for Temperature Control
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Solution Overview
Problem
Fishing boats face challenges in maintaining optimal temperature and oxygen levels in live wells, leading to stress and mortality in fish due to extreme conditions caused by hypothermia and hyperthermia, with existing technologies failing to provide effective ventilation and temperature control.
Innovation Solution
A ventilation vent unit with an open-ended elongate sleeve and partitioned air flow passages, featuring baffles that create a crescent-shaped opening for air flow, which allows for the release of stagnant air and introduction of fresh air, reducing water temperature and increasing oxygen levels through natural and forced air circulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If ice is added to reduce water temperature, then hyperthermia stress is reduced, but hypothermia stress increases and fish experience rapid environmental change
Solution Approach 1:
The live well system uses natural air circulation and temperature gradients to self-regulate temperature without external intervention. The vent unit allows natural convection currents to equalize temperature differences between the live well and ambient environment, eliminating the need for ice addition while preventing temperature extremes that cause fish stress
Solution Approach 2:
The system changes the temperature parameter dynamically by allowing controlled air exchange that equalizes temperature gradients. By modifying air flow patterns through the vent unit design, the system maintains water temperature within a narrow range close to ambient conditions, preventing both hyperthermia and hypothermia stress
2Productivity
If mechanical ventilation systems are used, then air circulation is improved, but device complexity increases
Solution Approach 1:
The vent unit utilizes natural convection currents and boat motion-induced air flow to achieve effective ventilation without mechanical components. The system self-regulates air exchange based on temperature gradients and environmental conditions, eliminating pumps, motors, and control systems while maintaining productive air circulation
Solution Approach 2:
The patent replaces mechanical ventilation systems with natural physical processes. Instead of using motors or pumps to move air, the system relies on thermal convection, density-driven air flow, and the natural motion of the boat to create air circulation patterns that achieve effective ventilation with zero mechanical complexity
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 vent unit stabilizes the live well environment, reducing fish stress and increasing survival rates by controlling temperature and oxygen levels, using natural and forced air circulation to mimic ambient conditions and enhance dissolved oxygen levels without mechanical systems.
Implementation Method 1
The baffle means slopes upwardly and outwardly away from the partition and terminates in a free outer edge spaced a selected distance from the adjacently disposed end of the sleeve. The space between the baffle and sleeve defines a crescent shaped opening for the flow of air there through. The free outer edge of the baffle is spaced vertically from the upper end of the sleeve to catch and deflect a current of air into the well above the water therein.
Implementation Method 2
The vent unit stabilizes the live well environment, reducing fish stress and increasing survival rates by controlling temperature and oxygen levels, using natural and forced air circulation to mimic ambient conditions and enhance dissolved oxygen levels without mechanical systems.
Data Source
AI summary
A sport or pleasure fishing boat having a closed live well for holding a selected volume of water and a live well ventilation vent unit mounted in a top wall overlying well. The live well vent unit is an open ended elongate sleeve that projects through the wall into the well. There is a partition dividing the interior of the sleeve into first and second separate vertical disposed air flow passages. Baffles extend from the upper end of the partition and overlying a portion of the respective passages exposed to atmosphere. The baffles slope upwardly and outwardly away from the partition and terminate in a free outer edge spaced a selected distance from the adjacently disposed end of the sleeve. The space between the baffle and sleeve defines a crescent shaped opening for the flow of air there through. The free outer edge of the baffle is spaced vertically from the upper end of the sleeve to catch and deflect a current of air into the well above the water therein.