Autonomous cleaning device and noise reduction air duct device thereof
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Solution Overview
Problem
Autonomous cleaning devices operating in high-power mode produce loud noise due to increased vacuum degree, causing physical vibration and friction within the air duct, which affects user experience.
Innovation Solution
A noise reduction air duct device with a support noise reduction structure made of elastic material, featuring an air duct assembly with an upper and lower housing, airflow buffer, and exhaust port, designed to absorb vibrations and reduce friction, utilizing Expanded Polypropylene (EPP) noise reduction material and active noise reduction mechanisms to neutralize motor noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the autonomous cleaning device operates in high-power mode to increase vacuum degree, then cleaning effectiveness is improved, but noise and physical vibration increase
Solution Approach 1:
The patent introduces a support noise reduction structure made of elastic material as an intermediary between the motor and the air duct housing. This intermediary component absorbs vibrations and reduces noise transmission while allowing the motor to operate at high power for effective cleaning
Solution Approach 2:
The patent changes the physical parameters of the support structure by using elastic material instead of rigid material. This parameter change allows the structure to deform and absorb vibrations, thereby reducing noise and vibration harmful factors while maintaining high-power operation capability
2Stability of the object's composition
If rigid support structure is used to maintain structural stability, then manufacturing simplicity is improved, but noise and vibration increase
Solution Approach 1:
The patent changes the material parameter from rigid to elastic, transforming the support structure's mechanical properties. The elastic material maintains structural stability while simultaneously providing vibration absorption and noise reduction capabilities
Solution Approach 2:
The patent uses composite construction by combining the elastic support noise reduction structure with the rigid air duct housing. This composite approach integrates the vibration-absorbing properties of elastic material with the structural stability of the housing
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 noise reduction air duct device effectively absorbs vibrations and reduces operational noise, enhancing user experience by minimizing noise generated during cleaning operations.
Implementation Method 1
The support noise reduction structure is made of an elastic material... effectively absorbs vibrations and reduces operational noise
Implementation Method 2
reduces friction, utilizing Expanded Polypropylene (EPP) noise reduction material
Implementation Method 3
utilizing Expanded Polypropylene (EPP) noise reduction material and active noise reduction mechanisms to neutralize motor noise
Data Source
AI summary
An autonomous cleaning device and a noise reduction air duct device are provided for autonomous cleaning device. The autonomous cleaning device includes a body and a motor arranged on the body, and the noise reduction air duct device is mounted on the body. The noise reduction air duct device includes an upper housing, a lower housing and a support noise reduction structure made of elastic material. The lower housing and the upper housing enclose to form an air duct, an air inlet is arranged at a position of the air duct corresponding to the motor, and an air outlet is arranged on a side of the air duct away from the air inlet; the support noise reduction structure has a first end fixed on the lower housing, and a second end abutting against a lower surface of the upper housing.