Vacuum Cleaner Return Channel Design to Reduce Noise and Pressure Loss
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cleaning devices face challenges in achieving improved inhalation force, compact design, and noise reduction while maintaining ease of manufacturing, particularly due to the pressure loss and noise issues associated with the distance between the impeller and diffuser components.
Innovation Solution
The cleaning device incorporates a novel inhalation unit with a rotatable impeller, an impeller cover featuring an inlet damper, and a return channel with a unique wing structure that forms a slope, allowing air to be efficiently introduced and discharged, thereby enhancing inhalation force and reducing noise through a larger distance between the impeller and diffuser components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the distance between the impeller and the diffuser is reduced to supplement inhalation force, then inhalation force is improved, but noise occurrence increases due to pressure fluctuation
Solution Approach 1:
A return channel is introduced as an intermediary component between the impeller and the diffuser. This return channel includes a return blade that guides the airflow from the impeller back to the diffuser inlet, allowing the impeller and diffuser to be positioned farther apart without compromising inhalation force. The return channel mediates the airflow path, enabling both improved inhalation force and reduced noise by eliminating pressure fluctuation.
Solution Approach 2:
The airflow path is extended into another dimension by adding the return channel with its return blade. Instead of a direct linear path from impeller to diffuser, the air flows through a multi-dimensional path that includes the return channel, increasing the effective distance between components while maintaining performance.
2Object-affected harmful factors
If the size of the impeller and motor are increased to prevent noise, then noise occurrence is reduced, but the size of the cleaning device increases
Solution Approach 1:
The return channel acts as a noise-mitigating intermediary that allows the use of smaller impeller and motor components. By guiding the airflow through the return channel with the return blade, the system reduces pressure fluctuation and noise without requiring larger components, thus maintaining a compact device size.
3Power
If the distance between the impeller and the diffuser is reduced to improve inhalation force, then inhalation force is improved, but pressure loss increases due to bent flow path
Solution Approach 1:
The return channel with its return blade serves as an intermediary that optimizes the airflow path between the impeller and diffuser. The return blade specifically guides the air flow to reduce turbulence and pressure loss, allowing the components to be positioned farther apart while maintaining efficient airflow and reducing energy loss.
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
This design enhances the inhalation force, reduces noise, and facilitates a more compact and easily manufacturable cleaning device by minimizing pressure loss and noise associated with pressure fluctuations.
Implementation Method 1
an impeller that is rotatable; an impeller cover having an inlet damper formed therein; and a return channel that is coupled to the impeller cover so that the impeller can be accommodated in the return channel
Implementation Method 2
a plurality of wings are disposed between the inner frame and the outer frame. The plurality of wings may form a slope with respect to an axial direction of the impeller
Implementation Method 3
an impeller cover having an inlet damper formed therein
Data Source
AI summary
A cleaning device includes an improved structure in which cleaning performance can be improved. The cleaning device includes an inhalation unit to generate inhalation force to inhale air into a main body, wherein the inhalation unit includes: an impeller that is rotatable; an impeller cover having an inlet damper formed therein; and a return channel coupled to the impeller cover so that the impeller can be accommodated in the return channel, wherein the return channel includes: an inner frame; and an outer frame placed at an outer side of the inner frame so as to be spaced apart from the inner frame, and a plurality of wings are disposed between the inner frame and the outer frame.