Vacuum Cleaner Head With Directional Rollers for Debris Containment
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Solution Overview
Problem
Conventional vacuum cleaners face challenges in efficiently picking up and removing detritus and liquid from surfaces, particularly on hard surfaces, due to limitations in roller rotation directionality and the accumulation of debris, which can lead to reduced cleaning efficiency and increased maintenance needs.
Innovation Solution
A vacuum cleaner head design featuring first and second rollers that rotate in opposite directions based on the cleaning direction, with the leading roller picking up detritus and liquid and the trailing roller preventing debris from escaping, combined with detritus and liquid removal arrangements using bristles and resilient flaps to assist in the removal process, minimizing the need for additional drive mechanisms and enhancing cleaning efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional vacuum cleaners use rotating brushes or rollers to pick up detritus, then detritus can be dislodged from the surface and directed to the suction opening, but the rollers accumulate debris which reduces cleaning efficiency and increases maintenance needs
Solution Approach 1:
The patent inverts the conventional approach by using a non-rotating roller that prevents detritus from escaping backward, combined with a rotating brush that actively propels detritus forward. This inversion of roles - where the roller becomes a containment element rather than a pickup element - prevents debris accumulation on the roller surface while maintaining effective detritus removal.
Solution Approach 2:
The patent segments the detritus handling function into two separate components: a non-rotating roller for pickup and containment, and a rotating brush for propulsion and removal. This segmentation allows each component to perform its specific function optimally without the drawbacks of a single combined roller system.
2Productivity
If additional drive mechanisms are added to rotate the rollers for improved detritus pickup, then cleaning effectiveness increases, but device complexity and energy consumption increase
Solution Approach 1:
The non-rotating roller is designed to be self-propelled by the movement of the vacuum cleaner head itself. As the head moves forward, the roller rotates passively due to friction with the surface, eliminating the need for an additional drive mechanism. This self-service approach maintains effective detritus pickup while avoiding increased device complexity.
Solution Approach 2:
The patent merges the propulsion function with the main vacuum cleaner head movement. The head's forward motion directly drives the roller rotation, combining the cleaning operation with the existing movement mechanism rather than requiring a separate drive system.
3Adaptability or versatility
If the vacuum cleaner head is designed to handle both hard and soft surfaces, then versatility increases, but the cleaning mechanism becomes more complex
Solution Approach 1:
The combination of a non-rotating roller and a rotating brush creates a universal cleaning mechanism that effectively handles both hard surfaces and soft surfaces like carpets. The roller provides effective pickup on hard surfaces while the rotating brush delivers the additional agitation needed for carpeted surfaces, making the system adaptable to multiple surface types without requiring separate mechanisms.
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 ensures effective detritus and liquid removal, reduces the need for frequent roller cleaning, and maximizes energy efficiency by utilizing the linear motion of the vacuum cleaner head to rotate the rollers, while also allowing for efficient handling of both dry and wet debris.
Implementation Method 1
The airstream is formed due to the vacuum created in the vacuum extraction zone creating a pressure difference which causes the flow of air towards the vacuum extraction zone
Implementation Method 2
a vacuum cleaner head which forms a base of the vacuum cleaner... A suction force is formed in the head that draws detritus from the surface to be cleaned to a suction opening
Implementation Method 3
Rotating brushes or rollers are used to help dislodge detritus from the surface to be cleaned and direct it to the suction opening. The brushes or rollers are rotated at a high rotational velocity so as to impart a velocity on detritus
Data Source
Figure 1~2
Figure 3~4
AI summary
The present application relates to a vacuum cleaner head (10). The vacuum cleaner head (10) includes a housing (40) having a vacuum extraction zone (49), and first and second rollers (20, 30) configured to locate against a surface to be cleaned (60). Each of the first and second rollers (20, 30) is able to pick-up detritus from the surface to be cleaned (60) when they rotate and move over the surface (60) and to carry detritus to the vacuum extraction area (49) in the housing (40). In accordance with the present invention, the first roller (20) is rotatable when moved along the surface to be cleaned (60) in a first direction and restricted from rotating when moved in an opposing second direction. The second roller (30) is rotatable when moved along the surface to be cleaned (60) in the second direction and restricted from rotating when moved in the first direction. The present application also relates to a vacuum cleaner comprising the vacuum cleaner head (10).