Blower Housing Bearing Support for Easy Assembly and Airflow
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Solution Overview
Problem
Existing fan housing assemblies are costly to assemble and disassemble, and they often lack sufficient support for the blower motor, with smaller parts requiring increased wall thickness that obstructs airflow.
Innovation Solution
A blower housing part with an inlet opening and a bearing mount for the motor shaft, featuring star-shaped webs and a bush-shaped elastomer element for vibration decoupling, along with conically tapering ribs for easier assembly and axial ribs for tolerance compensation, allowing for symmetrical force distribution and reduced wall thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fan housing is assembled from multiple fan housing parts, then assembly flexibility is improved, but assembly and disassembly cost increases
Solution Approach 1:
The fan housing is divided into a main body part and a side part that can be connected and disconnected. The bearing mount is integrated into the side part, allowing modular assembly and disassembly of the motor assembly while maintaining cost-effectiveness through the standardized connection interface.
2Strength
If wall thickness of smaller fan housing parts is increased, then mechanical strength is improved, but airflow obstruction increases
Solution Approach 1:
The bearing mount is positioned in the axial direction at the inlet opening, utilizing the available space in the axial dimension rather than increasing radial wall thickness. This allows the side part to maintain thin walls for minimal airflow obstruction while still providing adequate mounting support for the motor through the strategically positioned bearing mount.
3Reliability
If bearing mount is provided for motor mounting, then motor support is improved, but device complexity increases
Solution Approach 1:
The bearing mount is integrated directly into the side part of the fan housing, combining the housing function with the motor mounting function. The bearing bush is formed as part of the bearing mount structure, and the star-shaped webs are integrated into the side part, reducing the total number of separate components while providing adequate motor support.
4Ease of operation
If bearing bush cross-sectional area is reduced axially, then assembly ease is improved, but structural strength may be compromised
Solution Approach 1:
The bearing bush has conically tapering ribs that create a local reduction in cross-sectional area at the insertion end to facilitate assembly. The bearing bush maintains adequate wall thickness and structural strength in the region where it is spaced axially from the open face, while the tapered ribs only affect the insertion region. This localized geometric modification enables easy motor shaft bearing insertion without compromising the overall structural integrity of the bearing bush.
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
Enables quick and simple assembly of the fan housing while providing adequate motor support and minimizing airflow obstruction through symmetrical force distribution and reduced wall thickness.
Implementation Method 1
a bush-shaped elastomer element is arranged in the bearing bush. The bush-shaped elastomeric element is designed to accommodate the motor shaft bearing of the blower motor and is used for vibration decoupling from the adjacent components
Data Source
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AI summary
The invention relates to a blower housing part (1) with an inlet opening (2) for drawing in blower air and a bearing receptacle held in the inlet opening for supporting a blower motor, wherein the bearing receptacle has a bearing bushing (4) open to one side of the motor, which is configured to receive at least one motor shaft bearing (19) of the blower motor. The invention further relates to a blower with a blower housing formed from two interconnected blower housing parts.