Vehicle Air Conditioner Console Vent Mode Cam
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Solution Overview
Problem
Conventional vehicle air conditioners face issues with excessive air discharge to the rear seat in heating modes, leading to passenger discomfort and reduced air volume for the front seat, due to the console vent being fully open in floor and mixing modes.
Innovation Solution
Incorporating console air volume distribution means on a mode cam to control the degree of opening of the console door, adjusting the air volume distribution of the console vent based on air discharge modes, thereby regulating its opening in floor and mixing modes to prevent excessive air discharge to the rear seat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the console door is fully open in floor and mixing modes, then the rear seat receives adequate air volume, but the front seat experiences air volume deficiency and passenger discomfort occurs
Solution Approach 1:
The mode cam incorporates mode-specific slot configurations that create different air volume distribution characteristics for different operating modes. The floor mode cam slot allows greater console door opening for rear seat heating, while the mixing mode cam slot restricts opening to prioritize front seat air volume, achieving local optimization for each mode's specific requirements
Solution Approach 2:
The system dynamically adjusts the console door opening degree based on the selected air discharge mode through the mode cam mechanism. The cam follower engages with different slot profiles depending on the mode selector position, automatically varying the console door opening from fully open in floor mode to partially restricted in mixing mode, adapting air distribution to current operational needs
2Quantity of substance
If the console door is fully open in heating modes, then the rear seat receives sufficient air, but excessive air discharge occurs leading to passenger discomfort
Solution Approach 1:
The mode cam is designed with mode-specific slot geometries that create appropriate air volume restrictions for different heating scenarios. The mixing mode cam slot specifically limits console door opening to prevent excessive air discharge to the rear seat, while maintaining sufficient flow for the front seat, achieving local optimization for each mode's specific requirements
Solution Approach 2:
The system changes the physical parameter of console door opening degree based on the selected mode through the mode cam mechanism. In mixing mode, the cam follower engages with a slot profile that restricts the console door opening to a specific angle, controlling the air volume parameter to prevent excessive discharge while maintaining adequate supply for front seat occupants
3Device complexity
If a simple on/off control is used for the console door, then the device complexity is low, but the air volume distribution cannot be optimized for different modes
Solution Approach 1:
The mode cam serves multiple functions: it controls the mode doors for primary air discharge, simultaneously controls the temperature adjusting door for air temperature regulation, and also controls the console door for rear seat air supply. This single multi-functional component achieves complex air distribution optimization across all modes without requiring separate control mechanisms for each door
Solution Approach 2:
The invention merges the control of multiple air distribution components (mode doors, temperature adjusting door, and console door) into a single integrated mode cam mechanism. The cam follower engages with different slot profiles on the same cam to simultaneously coordinate all door openings according to the selected mode, combining multiple control functions into one unified system that reduces overall complexity while maintaining versatility
Data Source
AI summary
An air conditioner including a defrost vent, a face vent, floor vents and a console vent to discharge air. A console door adjusts the degree of opening of the console vent. A console air volume distribution means comprises a console slot which is formed on a mode cam and is connected with a rotary shaft of the console door to carry out cam motion. The console slot includes a closing slot part, an opening slot part and a middle slot part. The opening slot part, the middle slot part and the closing slot part are arranged such that the degree of opening of the console vent is reduced while an air discharge mode of the air conditioner is changed successively from a face mode to a bi-level mode, a floor mode, a mixing mode and a defrost mode.