Motor Vehicle Ventilation Unit with Integrated Grille Regulator
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Solution Overview
Problem
Prior air conditioning systems for motor vehicles face inefficiencies and increased noise due to protective grilles that counteract airflow and are costly to produce and assemble.
Innovation Solution
A ventilation unit design that eliminates the traditional protective grille by using a grille-shaped air flow regulator formed by radial arms and concentric rings, which supports the motor and impeller while optimizing airflow and minimizing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective grille is installed to protect the motor and impeller, then reliability is improved, but system efficiency deteriorates due to counteracted airflow
Solution Approach 1:
The protective grille is merged with the air flow regulating means into a single integrated structure. The radial arms and concentric rings that form the grille are shaped to simultaneously guide and regulate airflow, eliminating the need for a separate protective grille that would obstruct flow while maintaining both protection and efficiency functions
2Reliability
If a protective grille is installed to prevent foreign objects from entering, then reliability is improved, but noise increases
Solution Approach 1:
The protective function and airflow regulation function are combined into a single grille structure with radial arms and concentric rings. This integrated design allows the grille to protect against foreign objects while its aerodynamic shape minimizes turbulence and noise, unlike traditional grilles that merely block and create harmful airflow patterns
3Reliability
If a traditional protective grille is used, then protection is provided, but manufacturing cost increases
Solution Approach 1:
The protective grille is integrated with the air flow regulating means into a single structure formed by radial arms and concentric rings. This merger eliminates the need to manufacture and assemble separate protective grille components, reducing production complexity and cost while maintaining the protection function
Solution Approach 2:
The grille structure performs multiple functions simultaneously: it protects the motor and impeller from foreign objects, regulates airflow to optimize system efficiency, and minimizes noise generation. This multi-functionality eliminates the need for separate components, reducing overall manufacturing 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 design reduces production costs, improves system efficiency, and decreases noise by integrating the grille as a flow regulator, enhancing the overall performance of the ventilation system.
Implementation Method 1
an impeller or fan comprising a plurality of blades... whose rotation imparts a driving action to an air flow which is forced into the motor vehicle by the impeller itself
Data Source
AI summary
A ventilation unit for motor vehicles comprises a tubular element (5) fitted, through an opening (4) in the chassis (1) of the motor vehicle, and a hub (8), coaxial with the tubular element (5), which mounts an electric motor (10) for driving an impeller (12) fitted with blades (15); the motor and impeller are supported by connecting means (7) which are provided between the tubular element (5) and the hub (8) and which define a grille (20) for protecting the opening (4); these connecting means are suitably shaped to define means for regulating the air flow generated by the impeller (12), in such a way as to increase efficiency and reduce noise; the unit (2) also comprises a cover (21) for protecting the motor (10), fitted with means (24) for quick connection/disconnection to/from the hub (8) and defining, between the hub and the motor, openings (26) to allow the passage of the air flow moved by the impeller in such a way as to cool the motor.