Open Architecture HVAC Module for Multi-Zone Temperature Control
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Solution Overview
Problem
Traditional HVAC modules for vehicles with multiple temperature-controlled zones are cumbersome, costly, and inefficient due to the need for additional components and complex partitioning, leading to increased energy consumption and emissions.
Innovation Solution
An open architecture HVAC module with a single blower assembly and non-partitioned heat exchangers, where air flow from both heat exchangers can be directed to any zone via blend valves, allowing for efficient temperature control and variable airflow across multiple zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional partitioned HVAC modules are used for multiple zones, then multiple temperature-controlled zones can be achieved, but device complexity and manufacturing cost increase significantly
Solution Approach 1:
The HVAC module is segmented into functional zones using movable dampers rather than fixed partition walls. The evaporator and heater cores remain unpartitioned, allowing flexible air flow distribution to multiple zones through damper control, thereby reducing manufacturing complexity while maintaining multi-zone capability
Solution Approach 2:
Fixed partition walls are replaced with movable dampers that can dynamically adjust air flow distribution. This dynamic control mechanism allows the system to adapt to different zone requirements without requiring complex fixed partitions for each possible configuration, reducing both manufacturing complexity and improving versatility
2Adaptability or versatility
If dual HVAC modules are installed to achieve multi-zone operation, then multiple zones can be served, but packaging space and system mass increase
Solution Approach 1:
Multiple HVAC module functions are merged into a single integrated unit. The module combines evaporator, heater core, blend valves, and multiple dampers in one compact housing, eliminating the need for separate dual modules while providing multi-zone capability, thereby reducing packaging space and system mass
Solution Approach 2:
The single HVAC module is designed to perform multiple functions - serving multiple temperature zones, providing heating and cooling, and allowing flexible air flow distribution to different vehicle zones. This multi-functionality eliminates the need for multiple dedicated modules, reducing overall system volume
3Adaptability or versatility
If partition walls extend to heat exchangers for multi-zone control, then zone-specific temperature control is achieved, but heat exchanger size and energy consumption increase
Solution Approach 1:
The air flow path is segmented from the heat exchangers using dampers rather than partitioning the heat exchangers themselves. This allows the entire heat exchanger surface to be utilized for conditioning air that can then be distributed to different zones, maximizing heat exchanger efficiency while maintaining zone-specific control
Solution Approach 2:
The system changes the control parameter from physical partitioning to dampers that control air flow parameters. This allows the same heat exchanger to serve multiple zones by varying air flow distribution, eliminating the need for larger partitioned heat exchangers while maintaining zone-specific temperature control
4Adaptability or versatility
If traditional multi-zone HVAC modules are manufactured, then production volume is limited, but manufacturing cost per unit increases
Solution Approach 1:
A single standardized HVAC module design provides multi-zone capability through dampers and control valves, making it suitable for various vehicle types and zone configurations. This universality increases production volume potential and reduces per-unit manufacturing cost compared to custom-designed multi-zone modules
Solution Approach 2:
The use of movable dampers instead of fixed partitions simplifies manufacturing. The base module can be produced once with standard components, and multi-zone functionality is achieved through programmable damper control rather than custom tooling for each zone configuration, significantly reducing manufacturing complexity and cost
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 solution enables efficient utilization of heat exchanger capacity, reduces energy consumption, and minimizes emissions by allowing 100% air flow to be directed to any zone, providing super cooling or heating and variable airflow with a single blower assembly.
Implementation Method 1
A first heat exchanger is disposed within the housing downstream of the air inlet and a second heat exchanger is disposed within the housing downstream of the first heat exchanger
Implementation Method 2
A blend valve is disposed in each of the mixing chambers, wherein the blend valves are configured to selectively direct air flow from the first air chamber and the second air chamber to the first air outlet
Data Source
AI summary
An open architecture HVAC module is disclosed having a housing defining an air inlet and at least two adjacent air outlets. An evaporator and a heater unit are disposed within the housing. A cold air chamber is defined between the evaporator and heater unit, and a hot air chamber is defined downstream of the heater unit. A partition extends into the cold and hot air chambers from an interior surface of the housing between the two adjacent air outlets. The partition is spaced from the evaporator and heater unit. The partition cooperates with the housing to define a first mixing chamber in fluid communication with the first outlet and a second mixing chamber in fluid communication with the second outlet. A blend valve is disposed in each mixing chambers. The blend valves are configured to selectively direct air flow from the cold and hot air chambers to the air outlets.