Handheld vacuum cleaner
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Solution Overview
Problem
Handheld vacuum cleaners face issues with air vent placement, causing discomfort to users when air is blown towards them and raising dust when blown towards the surface being cleaned.
Innovation Solution
The handheld vacuum cleaner design includes a dust cup assembly with an airflow generation device and cyclone separation device, featuring an air vent at the top of the cup casing, a suction nozzle assembly, and a handle assembly, with the air vent's direction inclined upward relative to the suction channel's axis to minimize discomfort and dust dispersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the air vent is arranged in the top of the handle, then the exhaust distance is shortened, but the air is easily blown to the user causing discomfort
Solution Approach 1:
The air vent is positioned at the top of the cup casing rather than the handle, and the blowing direction is specifically inclined upward at a defined angle range (20°-120°) relative to the suction channel axis. This localized directional control ensures exhaust air is directed away from the user while maintaining short exhaust distance, resolving the contradiction between compact design and user comfort.
2Length of moving object
If the air vent is arranged in the bottom of the dust cup, then the exhaust distance is shortened, but the air is easily blown to the surface to be cleaned causing dust raising
Solution Approach 1:
The air vent is positioned at the top of the cup casing with a specifically controlled blowing direction inclined upward (20°-120° angle range) relative to the suction channel axis. This directional control ensures exhaust air flows upward and away from the cleaning surface, preventing dust raising while maintaining efficient exhaust performance.
3Device complexity
If the air vent blowing direction is not controlled, then the structure is simple, but the air may blow to user or cleaning surface causing harmful effects
Solution Approach 1:
The patent controls the blowing direction by defining a specific angle range (20°-120°) between the suction channel axis and the air vent blowing direction. This parameter-based control method achieves effective directional guidance without requiring complex mechanical structures, balancing simplicity with functionality.
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 effectively reduces energy consumption and prevents air from being blown towards the user or the surface, enhancing the cleaning efficiency and user comfort by shortening the exhaust distance and improving dust collection.
Implementation Method 1
a cyclone separation device, both of which are arranged in the cup casing
Implementation Method 2
a cyclone separation device
Implementation Method 3
an airflow generation device and a cyclone separation device, both of which are arranged in the cup casing
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A handheld vacuum cleaner (T) includes a dust cup assembly (T1), a suction nozzle assembly (T2) and a handle assembly (T3). The dust cup assembly (T1) includes a cup casing (1), an airflow generation device (2) and a cyclone separation device (3), both of which are arranged in the cup casing (1), the airflow generation device (2) being arranged above the cyclone separation device (3) and positioned on a downstream side of the cyclone separation device (3), and an air vent (140) being formed in a top of the cup casing (1). The suction nozzle assembly (T2) is mounted to the cup casing (1) and defines a suction channel (S1). The handle assembly (T3) is mounted to the cup casing (1) and used to be held. With the structure, a blowing direction of the air vent (140) is not towards a surface to be cleaned, so as to prevent the wind from the air vent (140) blows away dust on the surface to be cleaned and hence ensure a cleaning effect.