Sorption Filter Element With Heater for EV Cabin Air Recirculation
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Solution Overview
Problem
In electric vehicles, recirculated air conditioning can lead to water accumulation causing window fogging and carbon dioxide buildup, posing safety and health risks due to reduced driver concentration.
Innovation Solution
A sorption filter element with a heater and sorption filter bodies that adsorb and absorb carbon dioxide, water, and other pollutants, utilizing a regeneration mode to release stored substances, integrated into a HVAC system to improve air quality and reduce recirculated air reliance.
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 accumulates causing window fogging
Solution Approach 1:
The patent extracts water vapor and carbon dioxide from the recirculated air using sorption filter bodies containing desiccant material. The sorption filter element is integrated into the air recirculation system to selectively remove harmful substances while allowing the recirculation mode to continue operating for energy savings.
Solution Approach 2:
The patent changes the chemical composition parameters of the recirculated air by introducing sorption filter bodies that chemically adsorb water vapor and carbon dioxide. This allows the air to remain suitable for recirculation while removing the harmful components that cause fogging and health issues.
2Use of energy by moving object
If recirculation mode is used to save energy, then energy consumption is reduced, but carbon dioxide accumulates reducing driver concentration
Solution Approach 1:
The patent extracts carbon dioxide from the recirculated air using sorption filter bodies containing desiccant material with carbon dioxide adsorption capacity. The sorption filter element is integrated into the air recirculation system to selectively remove carbon dioxide while allowing the recirculation mode to continue operating for energy savings.
3Quantity of substance
If dehumidifying effect is used in evaporator, then water is removed from air, but this effect cannot be used during recirculation mode
Solution Approach 1:
The patent introduces sorption filter bodies as an intermediary mechanism to perform dehumidification during recirculation mode. The desiccant material in the sorption filter elements acts as a mediator that removes water vapor from the recirculated air, replacing the evaporator's dehumidifying function that cannot operate during recirculation.
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 vapor and carbon dioxide levels, preventing window fogging and improving air quality, thereby enhancing safety and health conditions within the vehicle.
Implementation Method 1
The heater is configured to heat regeneration air within the intermediate space
Implementation Method 2
the one or more sorption filter bodies being configured to remove carbon dioxide and/or water from raw air to turn the raw air into clean air
Implementation Method 3
By applying heat to the sorbent, the adsorbed and/or absorbed substances can be released from the sorbent
Data Source
AI summary
A sorption filter element includes a heater, a frame enclosing an intermediate space and including a separating wall running through the intermediate space, the separating wall being configured to receive the heater, and sorption filter bodies including at least one sorbent, a first one of the sorption filter bodies being disposed on an external side of the frame and adjacent to a first side of the separating wall and being configured to remove carbon dioxide and/or water from input raw air to turn the input raw air into clean air, and the first one of the sorption filter bodies further including a sorption filter body grid through which the clean air flows into the intermediate space. The heater is configured to heat the clean air within the intermediate space to turn the clean air into regeneration air, and includes a heater grid through which the regeneration air flows.