V-Shaped Sorption Filter for EV Cabin Air Recirculation
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Solution Overview
Problem
In electric vehicles, recirculation mode of air conditioning systems leads to accumulation of water and carbon dioxide in the passenger compartment, causing fogging and potential health hazards due to insufficient dehumidification and air exchange.
Innovation Solution
A sorption filter device with V-shaped sorption bodies and sorbents, capable of adsorbing and absorbing carbon dioxide, water, and other pollutants, utilizing a housing and air guidance mechanism for efficient air flow and sealing, allowing for regeneration through desorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If recirculation mode is used to save energy, then energy consumption is reduced, but water and carbon dioxide accumulate in the passenger compartment
Solution Approach 1:
The patent employs sorbent materials with porous structures (such as molecular sieves, activated carbon, or zeolites) that selectively adsorb water vapor and carbon dioxide from the recirculated air. These porous materials provide large surface areas for adsorption, enabling effective removal of harmful substances while maintaining the energy-saving recirculation mode.
Solution Approach 2:
The patent changes the chemical composition parameters of the air by introducing sorbent materials that chemically or physically bind with water and carbon dioxide. The sorbents alter the concentration parameters of harmful gases through adsorption processes, transforming the air composition from harmful to safe while maintaining recirculation.
2Loss of substance
If recirculation mode is used, then fresh air intake is reduced, but dehumidification capability is lost leading to fogging
Solution Approach 1:
The sorbent materials with porous structures selectively adsorb water vapor from the recirculated air, providing dehumidification capability without requiring fresh air intake. This prevents window fogging while maintaining the energy-efficient recirculation mode.
Solution Approach 2:
The sorbent material acts as an intermediary substance that facilitates water vapor removal from the air stream. It mediates between the recirculated air and the exterior environment, enabling dehumidification without direct air exchange with the outside.
3Reliability
If sorption filter element is sealed tightly, then air leakage is prevented, but air flow guidance becomes more complex
Solution Approach 1:
The air guidance element features a curved, arc-shaped contour that follows the curvature of the intermediate space. This curved design naturally guides air flow along the sealing surface, ensuring proper air direction while maintaining effective sealing without complex mechanical structures.
Solution Approach 2:
The air guidance element's curved contour automatically guides air flow along the sealing interface between the sorption filter element and housing, utilizing the geometry itself to ensure proper sealing and air direction without requiring additional active control mechanisms.
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 reduces water and carbon dioxide levels, preventing fogging and health risks, while improving air quality and reducing the need for fresh air intake, thus enhancing safety and comfort.
Implementation Method 1
the sorption filter element is particularly suitable for adsorbing and/or absorbing carbon dioxide and water
Implementation Method 2
the sorption filter element is particularly suitable for adsorbing and/or absorbing carbon dioxide and water
Implementation Method 3
the air guidance element protrudes into the intermediate space at the head side in a mounted state of the second housing part
Data Source
AI summary
A sorption filter device includes a sorption filter element including at least two sorption bodies with at least one sorbent, the at least two sorption bodies being arranged in a V-shape and enclosing an intermediate space that is open at a head side thereof, an outer sealing element running around an outer circumference of the head side, and an inner sealing surface arranged at the head side and running around a circumference delimiting the intermediate space at the head side. The sorption filter device further includes a housing including a first housing part configured to receive the sorption filter element, and a second housing part detachably connectable to the first housing part and configured to close the housing in a closed state thereof, the sorption filter element being received in the first housing part in such a way that the head side faces the second housing part.