Motor assembly and surface cleaning device
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Solution Overview
Problem
Wet cleaning devices face issues with water vapor contaminating the motor assembly due to incomplete discharge, leading to unpleasant odors and reduced service life, while fan-generated noise impairs user experience.
Innovation Solution
A motor assembly with a cyclone bracket coaxially arranged with the motor body and housing, guiding airflow to condense water vapor into liquid on the inner side wall for discharge through a water outlet and separate it from the airflow, which is then discharged through an air outlet, accompanied by noise-reducing mesh plates to minimize noise and prolong assembly life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If water vapor is discharged with airflow from the motor assembly, then the cleaning function is maintained, but water vapor contaminates the motor assembly causing unpleasant odors and reduced service life
Solution Approach 1:
The exhaust flow is divided into two separate discharge paths: one for water vapor through a water outlet and another for air through an air outlet. This segmentation prevents water vapor from contaminating the motor assembly while maintaining cleaning functionality.
Solution Approach 2:
A condensation chamber is introduced as an intermediary component between the motor body and the external environment. Water vapor condenses on the inner side wall of this chamber and is collected in a water collection groove, separating it from the airflow before discharge.
2Reliability
If the cyclone bracket guides airflow to condense water vapor, then water vapor is separated from airflow, but the device structure becomes more complex
Solution Approach 1:
The cyclone bracket serves multiple functions: it guides the airflow, facilitates condensation of water vapor on the inner side wall, and directs the condensed water to the water collection groove. This multi-functionality reduces the need for additional separate components.
Solution Approach 2:
The water outlet and air outlet are integrated into the housing structure, and the condensation chamber is combined with the cyclone bracket assembly. This merging of components achieves effective separation while minimizing overall structural complexity.
3Productivity
If fan operates to generate working airflow for cleaning, then cleaning effectiveness is improved, but fan-generated noise impairs user experience
Solution Approach 1:
Noise-reducing mesh plates are introduced as intermediary components in the airflow path. These mesh plates attenuate fan-generated noise while allowing the working airflow to pass through and maintain cleaning effectiveness.
Solution Approach 2:
The mesh plates change the physical parameters of the airflow by creating a tortuous flow path, which dissipates acoustic energy and reduces noise transmission while preserving the cleaning function of the airflow.
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
Effectively separates water vapor from airflow, preventing contamination and prolonging motor assembly life, while reducing operational noise for enhanced user experience.
Implementation Method 1
the working airflow carrying water vapor is condensed into liquid on an inner side wall of the housing through the cyclone bracket
Implementation Method 2
a cyclone bracket, arranged between the motor body and the housing and configured to guide a working airflow
Data Source
AI summary
A motor assembly and a surface cleaning device are provided. The motor assembly includes: a housing, the housing including an air outlet and a water outlet; a motor body, arranged inside the housing and configured to provide working power; and a cyclone bracket, arranged between the motor body and the housing and configured to guide a working airflow. The cyclone bracket, the motor body and the housing are substantially coaxially arranged in such a manner that after being discharged from the motor body, the working airflow carrying water vapor is condensed into liquid on an inner side wall of the housing through the cyclone bracket and then the liquid is discharged from the water outlet, while the working airflow not condensed into the liquid is discharged from the air outlet.