Air extraction box and method for installing same
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Solution Overview
Problem
Existing air extraction units require an adapter chamber to make inlets radial to the centrifugal wheel, altering the unit's shape and aerodynamic characteristics, and these changes are not predictable across different orientations.
Innovation Solution
An air extraction box with a parallelepiped envelope and a rotatable centrifugal wheel along the internal diagonal, allowing multiple installation configurations without altering size or aerodynamic characteristics, and featuring interchangeable faces for inlet and outlet openings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an adapter chamber is added to make inlets radial to the centrifugal wheel, then the unit can achieve radial inlet orientation, but the overall shape becomes elongated and bulky, and aerodynamic characteristics are modified with unpredictable pressure drops
Solution Approach 1:
The unit is divided into separate functional modules: a compact extraction box containing the centrifugal wheel, and interchangeable adapter elements that can be attached to provide different inlet orientations. This segmentation allows the core extraction mechanism to remain compact while providing adaptability through modular attachments.
Solution Approach 2:
The extraction box is designed with universal mounting interfaces that accept multiple adapter configurations. The same basic extraction box can serve multiple installation scenarios by simply changing the adapter element, making the system multi-functional without requiring multiple complete units.
2Adaptability or versatility
If an adapter chamber is added to achieve radial inlet orientation, then different inlet orientations can be obtained, but the unit becomes relatively bulky and aerodynamic characteristics are adversely affected
Solution Approach 1:
The adapter elements are designed to nest around or integrate with the extraction box in a space-efficient manner. The adapters utilize the existing external dimensions of the extraction box and add minimal additional volume, allowing different orientations without significantly increasing the overall unit volume.
3Adaptability or versatility
If the unit is oriented vertically or horizontally changing the orientation of the centrifugal wheel and motor, then installation constraints can be met, but the mechanical and aerodynamic characteristics are affected
Solution Approach 1:
The extraction box is designed with dynamic adaptability through interchangeable adapter elements rather than fixed internal component orientations. The centrifugal wheel and motor maintain a constant optimal orientation relative to each other, while the adapters provide the external orientation flexibility needed for different installation scenarios.
Solution Approach 2:
The system maintains constant internal parameters (wheel orientation, motor position) while changing external parameters (inlet orientation, installation position) through adapter configuration. This separation allows installation flexibility without compromising the mechanical and aerodynamic parameters that depend on fixed internal geometry.
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
Ensures consistent aerodynamic and mechanical performance across orientations, simplifies manufacturing, and facilitates easy installation and maintenance by using identical parts and predictable characteristics.
Implementation Method 1
a wheel (61), disposed in the outlet compartment, the wheel being rotatable relative to the casing around an axis of rotation, to circulate the airflow extracted from the inlet compartment to the outlet compartment via the internal opening
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Air extraction box (1), comprising: an enclosure (3), with three support faces (10Y, 10Z), adjacent to a first vertex (5A) and three secondary faces (20X, 20Z) adjacent to a second opposite vertex (5G); inlet compartments (51) and outlet compartments (52), delimited by the enclosure and separated by a first partition (30), crossed by an internal diagonal (A6) connecting said vertices (5A, 5G); an inlet opening (11Y), crossing one of the support faces and opening into the inlet compartment; an outlet opening (21Z), crossing one of the secondary faces and opening into the outlet compartment; and a wheel (61), in the outlet compartment, of which an axis of rotation (R61) is parallel or coaxial with the internal diagonal (A6).