Helical Water Capture Device for Low-Gravity Environments
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Solution Overview
Problem
In low-gravity environments, such as space, there is a need for a low-power, low-mass water collection apparatus that can efficiently separate water droplets from air streams, as water is scarce and power consumption must be minimized while avoiding unnecessary weight and space usage.
Innovation Solution
A helical-shaped channel with a variable pitch is used to create a turbulent air flow, separating water droplets from the air stream, which are then collected into a reservoir, with secondary vanes guiding the droplets and stabilizing them using capillary forces, allowing for efficient water collection with minimal power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a conventional water collection system is used in space, then water can be collected, but the system consumes excessive power and occupies unnecessary space
Solution Approach 1:
The patent replaces conventional mechanical water separation systems (requiring pumps and motors) with a passive helical channel structure that uses turbulent flow and capillary forces to separate and collect water droplets, eliminating the need for active mechanical components and reducing power consumption
Solution Approach 2:
The helical channel structure self-regulates water droplet separation and collection through its geometric design, using the flow dynamics and capillary action inherent in the structure to perform the separation function without external control systems or additional energy input
2Weight of moving object
If a conventional water collection system is used in space, then water can be collected, but the system adds unnecessary weight
Solution Approach 1:
The patent applies local quality by designing the helical channel with specific geometric properties (pitch, diameter, surface characteristics) in the region where water separation occurs, concentrating the functional properties where needed rather than using a uniformly complex structure throughout the entire system
3Device complexity
If a simple collection structure is used, then the system is lightweight, but water droplets cannot be effectively separated from air streams
Solution Approach 1:
The patent employs curvature through the helical channel geometry, where the curved path generates turbulent flow patterns that enhance water droplet separation from the air stream, while the continuous curved surface provides smooth water guidance without requiring complex segmented structures
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 apparatus effectively separates water droplets from air streams, reducing power usage and maintaining a stable water collection system, suitable for low-gravity environments like space, by utilizing a helical structure and capillary forces to guide and retain water droplets within a reservoir.
Implementation Method 1
The water laden air stream is forced into a helical-shaped channel to create a turbulent, rapid circumferential flow of air
Implementation Method 2
The water laden air stream is forced into a helical-shaped channel to create a turbulent, rapid circumferential flow of air
Implementation Method 3
The water droplets within the single rivulet flow may be stabilized using the flow of the air stream
Data Source
AI summary
An apparatus to separate water droplets from an air stream includes an elongated tube having a first end and a second end. The elongated tube includes an opening at a first end of the elongated tube, the opening may be positioned to accept the air stream. A reservoir is positioned at a second end of the elongated tube. A helix structure is positioned within the elongated tube. The helix structure includes an upper surface, a lower surface arranged opposite the upper surface, an outer edge, and a variable pitch along a length of the elongated tube. The variable pitch may provide a variable interior angle between an inner wall of the elongated tube and the upper surface of the helix structure.