Handheld Vacuum Cleaner Weight Distribution and Airflow Path Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Handheld vacuum cleaners have a center of gravity imbalance due to heavy components, leading to user discomfort and potential wrist injury, and suffer from airflow inefficiencies due to the placement of the airflow generator and power supply.
Innovation Solution
The design repositions the suction motor and battery to distribute weight evenly, minimizes the airflow path length, and directs discharged air away from the user by placing the battery behind the dust container and the suction motor behind the handle, with a discharge cover that directs airflow vertically and includes a pre-filter and HEPA filter for improved airflow management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the airflow generator and power supply are disposed right over and under the handle, then the components are compactly arranged, but the center of gravity concentrates on the handle causing user discomfort and potential wrist injury
Solution Approach 1:
The airflow generator is repositioned from a vertical arrangement (over the handle) to a horizontal arrangement (behind the cyclone), changing the spatial dimension of component layout. This dimensional shift redistributes weight along the longitudinal axis of the cleaner, moving the center of gravity away from the handle to achieve better balance without increasing overall device complexity
2Device complexity
If the airflow generator is disposed behind the cyclone, then the component layout is simplified, but the air channel becomes long and causes large flow loss
Solution Approach 1:
The air passage is pre-configured within the handle structure to provide a direct, optimized flow path from the cyclone to the airflow generator. This preliminary design of the air channel minimizes unnecessary length and directional changes, reducing flow resistance and energy loss before air enters the airflow generator
Solution Approach 2:
The air passage is designed with smooth curved transitions rather than sharp angles, and the airflow generator inlet is positioned to face the cyclone outlet directly. This streamlined configuration reduces turbulence and flow separation, minimizing energy loss in the air channel despite the rearward placement of the airflow generator
3Device complexity
If the airflow generator is disposed right over the handle, then the device structure is compact, but discharged air directly touches the user's hand
Solution Approach 1:
The airflow generator and its air outlet are extracted from the position directly over the handle and relocated to behind the cyclone. This separation removes the source of discharged air from proximity to the user's hand, eliminating the harmful effect of hot or high-velocity air contacting the user while maintaining compact overall device structure
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 configuration enhances user convenience by reducing weight distribution issues and airflow loss, increasing suction force, and preventing air discharge from contacting the user, thereby improving cleaning efficiency and safety.
Implementation Method 1
a dust separation unit that includes one or more cyclone units generating cyclonic flow to separate dust from air flowing inside through the suction unit
Implementation Method 2
a suction motor that generates suction force for sucking air through the suction unit and includes a rotary impeller
Data Source
AI summary
A cleaner includes: a suction unit; a suction motor that generates suction force for sucking air through the suction unit and includes an impeller; a dust separation unit that includes one or more cyclone units generating cyclonic flow to separate dust from air flowing inside through the suction unit; a dust container that stores dust separated by the dust separation unit and is disposed under the suction motor; a battery disposed behind the dust container to supply power to the suction motor; and a handle disposed behind the suction motor, wherein a rotational axis of the impeller and an axis of the cyclonic flow vertically extend and an extension line from the rotational axis of the impeller passes through the one or more cyclone units.