Shoe Aeration System with Bellows Pump for Ventilation
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Solution Overview
Problem
Existing shoe aeration systems fail to provide effective and efficient air and vapor exchange between the inside and outside of shoes, leading to poor foot ventilation and odor issues, especially with impermeable rubber soles that do not allow sweat transpiration.
Innovation Solution
An active aeration system incorporating a bellows pump with an elastic core and a shell made from flexible plastic, housed in a hollow sole with a perforated footbed and insole, which promotes forced air circulation through channels and valves, ensuring continuous air exchange and sweat evaporation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a microporous membrane is used to coat the inside of a perforated rubber sole, then water-proofing is improved while air permeability is maintained, but the aeration function becomes passive and micropores get blocked by dust and dirt
Solution Approach 1:
The bellows pump automatically pumps air and vapor from the shoe interior through the microporous membrane to the exterior without requiring external power or manual operation. The pumping action is self-regulating, activating when the membrane blocks aeration channels and preventing pore blockage by maintaining continuous air flow
Solution Approach 2:
The bellows pump maintains continuous air circulation between the shoe interior and exterior, ensuring that the microporous membrane remains clear of blockages by constantly removing sweat vapor and preventing dust accumulation, thereby sustaining both water-proofing and aeration functions
2Adaptability or versatility
If a hollow sole with release valves is used, then some air exchange is enabled, but the amount of air exchanged is small and effective aeration is not achieved
Solution Approach 1:
The passive mechanical release valve system is replaced with an active bellows pump mechanism that uses elastic deformation of the sole structure to actively pump air and vapor, transforming the aeration system from passive diffusion to active forced circulation
Solution Approach 2:
The bellows pump utilizes the dynamic compression and expansion of the elastic core within the flexible shell, converting the mechanical compression from foot movement into active pumping action that significantly increases air exchange volume and aeration efficiency
3Reliability
If rubber sole is used instead of leather sole, then heat insulation and water-proofing are improved, but air permeability is lost and sweat transpiration is prevented
Solution Approach 1:
The microporous membrane acts as an intermediary layer between the impermeable rubber sole and the shoe interior, allowing sweat vapor to pass through while blocking liquid water, and the bellows pump actively transports vapor through this membrane to prevent sweat accumulation
Solution Approach 2:
The bellows pump creates pneumatic pressure differential to actively pump sweat vapor through the microporous membrane of the rubber sole, enabling controlled vapor transport that maintains water-proofing while preventing sweat accumulation through active air movement
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 system effectively recirculates air and vapor, keeping the foot dry and comfortable, while also providing odor control and thermal regulation, enhancing foot health and comfort during various activities.
Implementation Method 1
pumping means, specifically a bellows pump, comprising a shell, formed from two half-shells, and an elastic core housed therein
Implementation Method 2
The active aeration system incorporating a bellows pump with an elastic core and a shell made from flexible plastic, housed in a hollow sole
Implementation Method 3
coating the inside of a perforated rubber sole with a microporous membrane, thus impermeable to water but permeable to air and sweat in the form of water vapour
Implementation Method 4
the footbed and/or the vamp and/or the insole shall comprise a phase-change material
Implementation Method 5
Good aeration, as well as dissipating bad smells, promotes the evaporation of the sweat that inevitably forms
Data Source
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AI summary
The present invention concerns an aeration system for shoes comprising an aeration device, specifically pumping means like a bellows pump, which constitutes a further object of the invention. More specifically, the present invention concerns an aeration system for shoes, comprising a hollow sole (1) having an aeration device in fluid communication both with the inside of the shoe and with the outside, at least one first and a second cavity (2, 3) being formed inside said hollow sole (1), pumping means (9) being housed in said at least one first cavity (2), wherein said pumping means (9) comprise a shell (10) and a distribution nozzle (11), a flexible core (12) being housed inside said shell (10), and a pad (18) is housed in said second cavity (3).