Cleaning appliance
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Solution Overview
Problem
Conventional cleaning appliances have a center of gravity far from the handle, making them difficult to maneuver and causing discomfort due to air discharge towards the user's hands.
Innovation Solution
The design repositions the center of gravity by placing the fan, particle separator, and battery in a configuration where the fan's center of gravity is between the particle separator and battery, with the rotary shaft parallel to the particle separator's center of gravity, and the handle positioned to balance the appliance, preventing air discharge towards the user's hands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the intake unit is provided on the front surface and the handle on the rear surface, then the cleaning appliance can perform cleaning function, but the center of gravity is far from the handle making it difficult to maneuver
Solution Approach 1:
The patent repositions the fan assembly from a horizontal arrangement to a vertical arrangement along the longitudinal axis of the housing. The fan is positioned above the particle separator, and the battery is positioned below the particle separator, creating a vertical distribution of components along the longitudinal direction. This dimensional change in component layout moves the center of gravity closer to the handle location, improving maneuverability without compromising cleaning function.
2Productivity
If the fan discharges air toward the handle, then the fan can move air efficiently, but air is discharged toward the user's hands causing discomfort
Solution Approach 1:
The patent introduces an air discharge direction control mechanism that creates asymmetric airflow patterns. The air discharge hole is positioned and oriented to direct exhaust air away from the handle and user's hands, while the impeller blades are designed with specific asymmetric angles to redirect the airflow trajectory. This asymmetric design maintains efficient air moving capability while eliminating the harmful effect of air discharge toward the user.
3Productivity
If the fan and particle separator are positioned to optimize cleaning performance, then cleaning efficiency is improved, but the center of gravity moves away from the handle reducing handling convenience
Solution Approach 1:
The patent transitions from a horizontal component layout to a vertical layout along the longitudinal axis. The fan is positioned above the particle separator in the vertical direction, and the battery is positioned below the particle separator. This vertical arrangement optimizes the cleaning pathway while positioning the combined center of gravity of these components closer to the handle, thereby improving handling convenience without sacrificing cleaning efficiency.
Solution Approach 2:
The patent changes the spatial parameters of component positioning, specifically the longitudinal positions of the fan, particle separator, and battery. By adjusting these positional parameters along the longitudinal axis and optimizing their vertical arrangement, the center of gravity is relocated to a position that balances cleaning performance with handling convenience.
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 improves handling convenience by balancing the appliance's center of gravity near the user's wrist, reducing the required force for maneuvering and preventing air discharge towards the user's hands.
Implementation Method 1
separating particles from the air by using a centrifugal force
Data Source
AI summary
A cleaning appliance comprises a first housing having a hollow cylinder shape; a second housing fixed to a circumferential surface of the first housing; a third housing provided on a circumferential surface of the first housing and having an exhaust hole; a first communication hole between the first and second housings; a fan for moving air from the second communication hole to the exhaust hole; a particle separator for separating particles from the air by centrifugal force; a battery housing protruded from a rear surface of the first housing, wherein the center of gravity of the fan is located between the center of gravity of the particle separator and the center of gravity of the battery, and a rotary shaft for the fan is parallel with a straight line passing through the center of gravity of the particle separator along a longitudinal direction of the first housing.