Air vent device for a ventilation system of a vehicle
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Solution Overview
Problem
Existing vehicle air conditioning and HVAC systems struggle to maintain a desired air temperature in vehicle compartments while minimizing airflow discomfort to drivers and passengers, particularly in hot climates.
Innovation Solution
An air vent device with a pipe forming an air channel and a diffuser made of flexible material, which can expand to cover varying portions of the air channel cross-section, thereby controlling airflow direction and rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the airflow rate from the A/C system is increased to reach the desired temperature in the vehicle compartment, then the cooling effect is improved, but the discomfort to occupants from direct airflow increases
Solution Approach 1:
The air channel cross-section is segmented into multiple regions by the diffuser portion, which divides the airflow into different paths. The diffuser portion creates separate flow zones that redirect air away from direct contact with occupants while maintaining overall high airflow rate for effective cooling.
Solution Approach 2:
The diffuser portion is positioned specifically at the mouth of the pipe where it can locally modify the airflow characteristics. By placing the diffuser at this critical location, the airflow is disturbed and redirected in the immediate discharge zone, preventing direct contact with occupants while maintaining the overall high airflow rate needed for cooling.
2Object-affected harmful factors
If the diffuser portion is expanded to cover a larger area of the air channel cross-section, then the blocking of direct airflow is improved, but the airflow rate to the vehicle compartment is reduced
Solution Approach 1:
The diffuser portion is made expandable, allowing its coverage area to be dynamically adjusted. This enables the system to adapt between different operating conditions: expanding to block direct airflow when needed, and contracting to maintain higher airflow rates when cooling demand is lower, thus resolving the contradiction between blocking effectiveness and airflow rate.
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 device allows for a high airflow rate into the vehicle compartment while significantly reducing unwanted airflow towards occupants, thus enhancing comfort and temperature control.
Implementation Method 1
the diffuser has a portion made of a flexible material which diffuser portion is arranged to cover a part of a cross-section area of the air channel and the diffuser portion is expandable for varying the size of the covered part of the air channel cross section area
Data Source
AI summary
An air vent device for a ventilation system of a vehicle. The device has a pipe forming an air channel for providing air to a compartment of the vehicle and a diffuser for disturbing the airflow provided to the vehicle compartment. The diffuser has a portion made of a flexible material which diffuser portion is arranged to cover a part of a cross-section area of the air channel and the diffuser portion is expandable for varying the size of the covered part of the air channel cross section area.