Vehicle Blower Unit Holder for Orthogonal Extraction
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Solution Overview
Problem
Conventional air conditioning apparatuses for vehicles face challenges in design flexibility and operability due to the need for long axial movement of the blower unit, which restricts space and requires precise orthogonal movement, leading to inefficiencies and increased size, affecting wind flow and ease of component replacement.
Innovation Solution
The design includes a blower unit with a holder and detachable scroll casing portions that allow for shorter axial movement and improved orthogonal displacement, using a tool for replacement to facilitate easier extraction and installation, reducing the size of apertures and maintaining efficient airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the blower unit is moved along the axial direction for replacement, then the fan can be extracted from the scroll chamber, but the required movement distance is long, restricting design freedom and space
Solution Approach 1:
The patent introduces orthogonal displacement (movement perpendicular to the axial direction) as an additional dimension for component extraction. The holder is designed to move orthogonally relative to the scroll casing, allowing the fan to be extracted from the scroll chamber without requiring long axial movement. This dimensional change resolves the contradiction by providing a shorter, more space-efficient extraction path.
2Ease of operation
If the aperture size is enlarged to avoid interference during axial movement, then the blower unit can be extracted, but the intake portion size increases, affecting wind flow efficiency
Solution Approach 1:
By switching from axial movement to orthogonal displacement, the patent enables the use of smaller apertures in the scroll casing. The orthogonal extraction path allows the fan to pass through the aperture without requiring excessive clearance, thus maintaining compact aperture dimensions and preserving wind flow efficiency while still achieving easy component replacement.
3Length of moving object
If precise orthogonal movement is required for blower unit replacement, then component extraction is possible, but the operability is reduced due to space constraints and interference
Solution Approach 1:
The patent employs a detachable holder design that enables dynamic, tool-free assembly and disassembly. The holder can be easily detached from the scroll casing and reattached, allowing the blower unit to be extracted and replaced without requiring precise orthogonal movements or complex alignment procedures. This dynamic design significantly improves operability while reducing space requirements.
4Stability of the object's composition
If the blower unit design uses integrated scroll casing portions, then structural integrity is maintained, but design freedom and ease of replacement are restricted
Solution Approach 1:
The patent segments the scroll casing into a scroll casing body and a detachable holder portion. This segmentation maintains the structural integrity of the overall assembly while enabling easy detachment and replacement of the blower unit. The holder acts as an intermediary component that can be separated from the scroll casing, providing design freedom and versatility without compromising the stability of the integrated structure.
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 enhances design freedom, improves operability by reducing the required space and interference, and maintains efficient airflow while simplifying the replacement process of the blower unit, thus addressing the limitations of conventional systems.
Implementation Method 1
a pair of scroll chambers that serve, by way of a rotation of the fans, to draw air into a unit housing
Implementation Method 2
a pair of scroll chambers that serve, by way of a rotation of the fans, to draw air into a unit housing
Data Source
Figure 1
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AI summary
An air conditioning apparatus for use in a vehicle, includes a blower unit (40), a motor, a first fan (41), and a second fan (42), a first scroll casing portion (21), which forms a first scroll chamber that houses a first fan (41), and further includes a first intake aperture portion (21k), and a holder (44), further including a second scroll casing portion (22), which forms a second scroll chamber (22a) that houses a second fan (42), and further includes a second aperture portion (22m) upon a side of the motor, a first flange portion (442) for the cover, which closes off the first intake aperture portion upon the side of the motor, and a second flange portion (443) for the cover, which closes off the second aperture portion (22m) upon a side of the motor, wherein the first scroll casing portion (21) is formed so as to be detachable from, and attachable upon, a unit housing (1).