Cross-flow impeller mounting structure with separate motor and impeller openings
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Solution Overview
Problem
The existing air duct components face difficulties in mounting the motor and cross-flow impeller due to their combined weight, leading to challenges in ensuring concentricity, which results in noise and performance issues.
Innovation Solution
The air duct component design includes separate mounting through holes for the motor and cross-flow impeller, allowing for direct mounting and eliminating the need for a sheet-metal fixing frame, with features like rubber parts for easy assembly and a yielding groove for stable cover plate mounting, ensuring improved concentricity and assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the motor and cross-flow impeller are mounted as a whole assembly, then the mounting process can be completed, but the combined weight increases making it difficult to mount and ensures low concentricity
Solution Approach 1:
The patent divides the mounting process into two independent stages: first mounting the motor through the first opening, then separately mounting the cross-flow impeller through the second opening. This segmentation eliminates the need to handle a heavy combined assembly while ensuring proper alignment and concentricity of the impeller with the motor shaft.
2Ease of manufacture
If a sheet-metal fixing frame is used to mount the motor, then the motor can be fixed, but the structure becomes more complex and concentricity cannot be guaranteed
Solution Approach 1:
The patent removes the sheet-metal fixing frame from the structure and replaces it with direct mounting of the motor to the housing through the first opening. This extraction of the intermediate fixing frame simplifies the overall structure, reduces the number of components, and eliminates the alignment issues that arose from using the fixing frame, thereby guaranteeing better concentricity.
3Adaptability or versatility
If the first opening has a large diameter to accommodate the impeller, then the impeller can be mounted, but the motor cannot be directly mounted
Solution Approach 1:
The patent creates two separate openings with different sizes: the first opening is sized for the motor, and the second opening is sized for the cross-flow impeller. This segmentation allows each component to be mounted through an opening optimally sized for it, eliminating the need for a large first opening and enabling direct motor mounting without requiring additional fixing frames.
Data Source
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AI summary
A cross-flow impeller mounting structure, an air duct component and an apparatus having a cross-flow impeller. The cross-flow impeller mounting structure includes a housing (1) and an impeller shaft support structure which is mounted on the housing (1) and is adapted to mount and support one end of a cross-flow impeller shaft away from a motor (5); the housing (1) is adapted to mount a cross-flow impeller (4) and match the cross-flow impeller (4) to form an air duct; the housing (1) includes: a side wall (11); a first end wall (12) connected to one end of the side wall (11) and provided with a first mounting through hole (121) having an aperture which matches an outer diameter of the motor (5) driving the cross-flow impeller (4) to rotate and is adapted to mount the motor (5); a second end wall (13) connected to the other end of the side wall (11) and provided with a second mounting through hole (131) for the cross-flow impeller (4) to mount; the second end wall (13), the first end wall (12) and the side wall (11) encloses a cavity receiving the cross-flow impeller (4). With the provided cross-flow impeller mounting structure, the difficulty in mounting the motor and the cross-flow impeller can be reduced, while a higher concentricity of the cross-flow impeller can be guaranteed.