Electric blower and cleaning apparatus
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Solution Overview
Problem
The complex structure of electric blowers in hand-held vacuum cleaners makes assembly and maintenance difficult.
Innovation Solution
An electric blower design featuring a shell assembly with mounting legs and a diffuser, which simplifies assembly by fitting into a cleaning apparatus and reduces assembly time, while the rotor assembly drives the rotary impeller to generate high-speed airflow for effective suction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the electric blower uses a compact design with integrated mounting structure, then the device complexity is reduced and assembly is facilitated, but the suction force may be compromised
Solution Approach 1:
The electric blower is divided into distinct functional modules: the motor assembly, the impeller assembly, the diffuser, and the mounting legs. This segmentation allows each component to be optimized independently - the mounting legs provide simplified attachment while the impeller-diffuser combination maintains high suction force through efficient aerodynamic design.
Solution Approach 2:
The mounting legs are integrated directly with the shell assembly in an一体化 structure, eliminating separate mounting brackets or additional fastening components. This merging reduces the number of parts and simplifies assembly while the internal aerodynamic paths remain optimized for high suction performance.
2Force
If the electric blower is designed with high rotating speed impeller, then the suction force is improved, but the assembly and maintenance difficulty increases
Solution Approach 1:
The impeller is designed as a separate, self-contained assembly that can be independently removed and replaced. This segmentation allows the high-speed impeller to be optimized for performance while maintaining ease of maintenance - if the impeller wears or fails, it can be replaced without disassembling the entire motor or diffuser assembly.
Solution Approach 2:
The impeller assembly is extracted as a removable unit from the housing, allowing quick access for maintenance and replacement. This extraction principle enables the high-performance impeller to be serviced independently, reducing maintenance complexity despite the high rotating speeds required for strong suction.
3Loss of time
If the electric blower uses a simplified mounting structure with mounting legs, then the assembly time is reduced, but the structural strength may be compromised
Solution Approach 1:
The mounting legs are merged with the shell assembly as an integrated structure, eliminating the need for separate mounting brackets or additional fastening hardware. This integration reduces assembly time while the legs are designed with sufficient cross-sectional area and material strength to support the high-speed rotating impeller and withstand operational vibrations and loads.
Solution Approach 2:
The mounting legs are designed with localized reinforcement at critical stress points, such as the根部 where they connect to the shell assembly. This local quality enhancement ensures structural strength is concentrated where needed most, allowing the overall mounting structure to remain simple and quick to assemble while maintaining adequate strength for high-speed operation.
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
The design facilitates easier assembly and maintenance while providing a high suction force through high-speed airflow, enhancing the functionality of the cleaning apparatus.
Implementation Method 1
The rotor assembly drives the rotary impeller to rotate at a high speed. The rotary impeller and the wind cover cooperate to generate a high-speed airflow.
Implementation Method 2
The high-speed airflow passes through the diffuser for diffusion, so as to generate a large suction force
Data Source
AI summary
An electric blower and a cleaning apparatus are provided. The electric blower includes a shell assembly, a wind cover, a rotary impeller and a diffuser. A stator assembly and a rotor assembly are provided inside the shell assembly. The wind cover is connected to the shell assembly. The rotary impeller is located inside the wind cover, and is connected to a rotating shaft of the rotor assembly. The diffuser is arranged at the end of the shell assembly, which faces the wind cover, and is located between the rotary impeller and the shell assembly. An outer wall of the shell assembly is provided with a cylindrical portion. Multiple circumferentially distributed mounting support legs are provided at the end of the cylindrical portion, which faces away from the wind cover. The mounting legs are used to fit with an assembly structure of a cleaning apparatus.