Vehicle Air Duct Recirculation for Faster Cabin Heating and Cooling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Vehicle air conditioning systems face challenges in quickly entering working states during extreme temperatures, leading to slow heating and cooling rates, which prolongs passenger waiting times and affects user experience.
Innovation Solution
The air conditioning system incorporates a first and second heat exchange air duct with built-in evaporator and heater respectively, along with a circulating system that recycles air after heat exchange to reduce inlet air temperatures and assist in faster heat exchange processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fresh air is introduced from outside during extreme temperatures, then the air conditioning system can maintain proper air quality, but the heating and cooling rates become slow due to extreme inlet air temperatures
Solution Approach 1:
The patent combines fresh air intake and circulating air intake into a single air inlet that can selectively receive either fresh air or circulating air. This merged inlet structure enables the system to switch between air sources based on operational requirements, allowing fast response when using circulating air and maintaining air quality when using fresh air.
Solution Approach 2:
The patent implements dynamic switching between fresh air mode and circulating air mode based on real-time temperature conditions and operational state. The system transitions from static fresh air intake to dynamic air source selection, enabling optimal performance under varying extreme temperature conditions.
2Productivity
If circulating air is used to improve heating and cooling rates, then the system response speed increases, but the air quality may deteriorate due to recirculating contaminated air
Solution Approach 1:
The patent implements dynamic switching between fresh air mode and circulating air mode based on real-time temperature conditions and operational state. The system transitions from static fresh air intake to dynamic air source selection, enabling optimal performance under varying extreme temperature conditions.
Solution Approach 2:
The system uses feedback from temperature sensors and operational state to dynamically adjust air source selection. When fast cooling or heating is required, the system feeds back to switch to circulating air mode; when air quality is prioritized, it switches to fresh air mode, creating a closed-loop control system.
3Device complexity
If the air conditioning system uses traditional fresh air intake only, then the structure remains simple, but the heating and cooling rates are slow during extreme temperatures
Solution Approach 1:
The patent combines fresh air intake and circulating air intake into a single air inlet that can selectively receive either fresh air or circulating air. This merged inlet structure enables the system to switch between air sources based on operational requirements, allowing fast response when using circulating air and maintaining air quality when using fresh air.
Solution Approach 2:
The single air inlet structure serves multiple functions: it can intake fresh air from the external environment, recirculate internal air for faster temperature adjustment, or combine both air sources. This multi-functional design replaces traditional separate intake systems while improving performance.
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
This configuration enables the air conditioning system to quickly enter working states, improving heating and cooling rates, reducing passenger waiting times, and enhancing user experience.
Implementation Method 1
a first heat exchange air duct provided with a built-in evaporator
Implementation Method 2
a second heat exchange air duct provided with a built-in heater
Data Source
AI summary
An air conditioning system includes a first heat exchange air duct, a second heat exchange air duct, and a circulating system. The first heat exchange air duct is provided with a built-in evaporator, a first air inlet end, and a first air outlet end, the first air inlet end is communicated with a fresh air inlet outside a vehicle, and the first air outlet end is communicated with a first air outlet port inside the vehicle; the second heat exchange air duct is provided with a built-in heater, a second air inlet end, and a second air outlet end, the second air inlet end is communicated with the fresh air inlet and/or the first air inlet end, and the second air outlet end is communicated with a second air outlet port inside the vehicle.