HVAC Flap Synchronization Mechanism for Multi-Zone Temperature Control
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Solution Overview
Problem
Existing heating, ventilation, and air conditioning devices for motor vehicles are not optimally suited for single-zone, two-zone, or multi-zone operations, leading to complex and costly kinematics, and there is a need for a solution that simplifies the device architecture while maintaining efficient temperature control across various vehicle compartments.
Innovation Solution
A heating, ventilation, and air conditioning device with a sliding first flap and a drum-type second flap, along with a synchronization mechanism, is designed to ensure simultaneous movement of the flaps, allowing for efficient temperature control in single-zone, two-zone, or multi-zone operations while minimizing bulk and kinematic complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two distribution organs (mixing chambers) are used for multi-zone operation, then thermal management of different zones is achieved, but device complexity and cost increase
Solution Approach 1:
The patent merges the control functions of two mixing chambers by using a single actuator that simultaneously controls both the first shutter (for first mixing chamber) and the second shutter (for second mixing chamber). This integration reduces the number of independent control mechanisms while maintaining the capability to thermally manage different zones independently, thereby reducing device complexity without sacrificing multi-zone adaptability
2Adaptability or versatility
If two distribution organs (mixing chambers) are used for multi-zone operation, then thermal management of different zones is achieved, but manufacturing cost increases
Solution Approach 1:
The single actuator serves multiple functions by controlling both the first shutter and the second shutter, making it a multi-functional component. This universality reduces the total number of parts that need to be manufactured and assembled, thereby lowering manufacturing costs while still enabling multi-zone thermal management through coordinated control of both mixing chambers
3Device complexity
If a sliding flap and drum-type flap are used with synchronization mechanism, then kinematic complexity is reduced, but device bulk is minimized
Solution Approach 1:
The synchronization mechanism is integrated within the existing device structure, with the actuator and linkage systems nested among the heat exchangers, mixing chambers, and shutter mechanisms. This nesting approach allows the synchronization function to be added without significantly increasing the overall device volume, as the components are arranged to utilize existing spatial relationships rather than adding external bulk
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 solution enables a compact, cost-effective heating, ventilation, and air conditioning device capable of maintaining uniform temperatures across different vehicle zones, reducing steric bulk and operational complexity, and allowing for standardization across various vehicle types.
Implementation Method 1
a first heat exchanger, an air flow channel in which the first heat exchanger is arranged
Implementation Method 2
an evaporator which is intended to cool and dehumidify the flow of air passing through it
Implementation Method 3
a radiator, possibly associated with an additional radiator, which is intended to heat the flow of air passing through it
Data Source
Figure 1
Figure 2
AI summary
Heating, ventilation and/or air conditioning device (2) for a motor vehicle, comprising a housing (4) comprising: - a first heat exchanger (6), - a duct (3) for the flow of a stream of air in which the first heat exchanger (6) is arranged, - a first bypass path (16) bypassing the first heat exchanger (6), - a first flap (18) and a second flap (28) at least partially obstructing the air stream flow duct (3), said flaps (18, 28) being situated near the first heat exchanger (6). According to the invention, the first flap (18) is of the sliding type while the second flap (28) is of a different type from said first flap (18).