Reservoir Tank Vent Tube With Buoyancy Valve Against Air Backflow
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Solution Overview
Problem
The existing engine cooling systems face issues with air flowing backward from the reservoir tank to the engine, leading to noise and degraded cooling performance due to air bubbles in the coolant circulation line.
Innovation Solution
A device with a backward air flow prevention tube and an air collection slit hole, equipped with a buoyancy ball or buoyancy pipe that opens and closes the slit hole based on pressure changes, prevents air from flowing back to the engine while allowing air collection from the engine side.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a degassing hose is connected between the reservoir tank and the engine coolant line to collect air, then air collection performance is improved, but air may flow back to the engine causing noise and degraded cooling performance
Solution Approach 1:
The patent introduces a one-way valve as an intermediary component in the degassing hose system. This valve allows air to pass from the engine to the reservoir tank while blocking reverse flow, thus mediating between the air collection function and the prevention of harmful backward air flow.
Solution Approach 2:
The one-way valve is designed to automatically open and close based on the direction of air flow pressure, without requiring external control mechanisms. The valve structure itself provides the function of preventing backward air flow through its inherent mechanical design, making the system self-regulating.
2Quantity of substance
If the reservoir tank pressure is higher than the coolant line pressure, then air can be collected in the reservoir tank, but coolant and air may flow back to the radiator and engine
Solution Approach 1:
The one-way valve acts as a mediator between the high-pressure reservoir tank and the lower-pressure coolant line. It permits air to be pushed into the reservoir tank when pressure is higher, but prevents any reverse flow of coolant or air when the pressure differential reverses.
Solution Approach 2:
The patent converts the potentially harmful high-pressure condition in the reservoir tank into a beneficial force that pushes air through the one-way valve into the reservoir for collection, while the same pressure differential is prevented from causing harmful backflow by the valve's check mechanism.
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
Effectively prevents air from flowing back into the engine, reducing noise and maintaining engine cooling performance by ensuring air is collected in the reservoir tank, and avoiding coolant boiling issues.
Implementation Method 1
an opening and closing structure disposed within the backward air flow prevention tube to open the air collection slit hole in order to open or close the air collection slit hole only when the collected air is introduced into the backward air flow prevention tube from the degassing hose
Data Source
AI summary
The present disclosure provides a device for preventing the backward air flow of a reservoir tank for a vehicle, which may mount an backward air flow prevention tube extending to coolant on a connector of a reservoir tank to which a degassing hose is connected, and form an air collection slit hole communicating with an upper space of the reservoir tank in the upper portion of the tube to be openable or closable, thereby easily preventing the phenomenon in which the air within the reservoir tank flows back toward an engine, and easily collecting the air introduced from the engine side.