Electric Blower Single Bearing Assembly Simplification
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Solution Overview
Problem
Existing electric blowers require high assembly accuracy and complex assembly processes due to the need for two bearings, leading to increased costs and reduced efficiency.
Innovation Solution
An electric blower design using only one bearing located between the moving impeller and magnetic ring, with an injection molding housing and integrated components to simplify assembly and reduce parts, enhancing assembly efficiency and cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two bearings are installed at both ends of the rotating shaft to ensure working reliability, then the working reliability is improved, but the assembly accuracy requirements increase and assembly becomes complicated
Solution Approach 1:
The patent removes one of the two bearings from the system, extracting only the essential bearing function while eliminating the need for high-precision dual-bearing assembly. This reduces assembly complexity while maintaining adequate reliability through a single bearing positioned between the moving impeller and magnetic ring.
Solution Approach 2:
The patent combines the functions of two separate bearings into a single bearing structure. The single bearing is positioned to support the rotating shaft between the moving impeller and magnetic ring, merging the support functions that would otherwise require two separate bearing components and assembly operations.
2Reliability
If two bearings are installed at both ends of the rotating shaft to ensure working reliability, then the working reliability is improved, but the assembly process becomes complicated
Solution Approach 1:
The patent removes one of the two bearings from the system, extracting only the essential bearing function while eliminating the need for high-precision dual-bearing assembly. This reduces assembly complexity while maintaining adequate reliability through a single bearing positioned between the moving impeller and magnetic ring.
Solution Approach 2:
The patent combines the functions of two separate bearings into a single bearing structure. The single bearing is positioned to support the rotating shaft between the moving impeller and magnetic ring, merging the support functions that would otherwise require two separate bearing components and assembly operations.
3Reliability
If two bearings are installed at both ends of the rotating shaft, then the working reliability is improved, but the number of parts increases and product costs increase
Solution Approach 1:
The patent removes one of the two bearings from the system, extracting only the essential bearing function while eliminating the need for high-precision dual-bearing assembly. This reduces assembly complexity while maintaining adequate reliability through a single bearing positioned between the moving impeller and magnetic ring.
Solution Approach 2:
The patent combines the functions of two separate bearings into a single bearing structure. The single bearing is positioned to support the rotating shaft between the moving impeller and magnetic ring, merging the support functions that would otherwise require two separate bearing components and assembly operations.
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
Simplified assembly process, reduced assembly accuracy requirements, lower product costs, improved motor efficiency, and enhanced reliability with reduced noise and vibration.
Implementation Method 1
compared with metal housing, injection molding housing does not generate heat due to eddy current, which accordingly reduces the external working environment temperature of the bearing and improves the reliability of the bearing
Implementation Method 2
the thermosetting glue can be used to bond and fix the bearing chamber and the bearing of the injection molding housing. The glue flows into and fills the glue containing groove to achieve a firm bond between the bearing chamber and the bearing (or bearing sleeve)
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Disclosed is an electric blower, comprising a rotor assembly (2) and a housing (3). The rotor assembly (2) comprises a bearing (21), a movable impeller (22) and a magnetic ring (23), with the magnetic ring (23) and the movable impeller (22) being respectively mounted at two ends of the bearing (21). The housing (3) has a bearing chamber (33). The diameter of the magnetic ring (23) is less than the diameter of the bearing chamber (33), the magnetic ring (23) can pass through the bearing chamber (33), and the movable impeller (22) and the magnetic ring (23) are respectively located at two ends of the bearing chamber (33). The assembly technique of the electric blower is simplified, facilitating the improvement of assembly efficiency.