Vacuum Cleaner Air Guide for Separator Impact Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vacuum cleaners face damage from heavier particles at high rotational speeds due to inadequate separation mechanisms, leading to performance issues and potential user safety hazards.
Innovation Solution
A vacuum cleaner design featuring a rotatable separator with an air-guide means that creates a column of rotating air around the separator, preventing heavier particles from hitting the separator by guiding them radially and centrifugally away, thus shielding the separator and maintaining performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the separator rotates at high speed to remove light particles, then particle separation efficiency is improved, but heavier particles may hit the separator causing damage and unbalance
Solution Approach 1:
The separation process is divided into two stages: pre-separation in the first chamber where heavy particles are removed by the air-guide means, and final separation in the second chamber where the separator handles light particles. This segmentation allows each component to operate within optimal parameters, preventing damage to the separator while maintaining high separation efficiency.
Solution Approach 2:
The air-guide means performs preliminary action by removing heavy particles from the air stream before the air reaches the separator. This pre-cleaning action prevents heavy particles from accumulating and causing damage to the separator during high-speed rotation, thereby protecting the separator while maintaining productivity.
2Productivity
If the separator rotates faster to capture lighter particles, then cleaning performance is improved, but the risk of separator damage from heavy particles increases
Solution Approach 1:
The air-guide means acts as an intermediary component between the air inlet and the separator. It intercepts and redirects heavy particles away from the separator before they can cause damage, while allowing the separator to continue rotating at high speeds to capture light particles, thus resolving the conflict between cleaning performance and damage risk.
Solution Approach 2:
The harmful heavy particles are extracted from the air stream in the first chamber by the air-guide means before the air enters the separator. This extraction removes the harmful factor that could damage the separator, allowing the separator to operate at high speeds for optimal cleaning performance without the risk of heavy particle impact.
3Reliability
If a water bath filter is used to protect the separator from particles, then separator protection is improved, but air flow becomes blocked due to filter clogging
Solution Approach 1:
Instead of using a water bath filter that can become clogged, the invention uses the air-guide means with centrifugal force to separate and redirect heavy particles. This pneumatic approach maintains continuous air flow without blockage while still providing separator protection, resolving the contradiction between protection and productivity.
Solution Approach 2:
The air-guide means uses the kinetic energy and centrifugal force of the incoming air stream itself to separate and redirect heavy particles, without requiring an external filtering medium that can clog. This self-service mechanism maintains uninterrupted air flow while protecting the separator, avoiding the productivity loss associated with filter maintenance.
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
The air-guide means effectively prevents damage to the separator, ensures efficient particle separation, and enhances user safety by redirecting heavier particles into a dust collection container, while allowing lighter particles to enter the separator without causing harm, thus maintaining the vacuum cleaner's performance and extending its lifespan.
Implementation Method 1
When rotating the separator, centrifugal forces are exerted on the airborne particles due to which the airborne particles are being moved away from the separator
Implementation Method 2
By rotating the separator a column of rotating air will be formed around the separator. Since the dimension of the air-guide means in radial direction is larger than the dimension of the separator, air with the airborne particles will be forced to be moved around the air-guide means towards the separator in a more or less radial direction. However, due to the centrifugal forces, the particles will then be moved away from the separator
Data Source
Figure 1~2
Figure 3~4
Figure 5~6B
AI summary
A vacuum cleaner (1, 21, 31) comprises an air inlet opening (3), an air outlet opening (6) and a rotatable separator (9) for separating air and airborne particles. The separator (9) comprises at least one air entrance opening (109) located between the air inlet opening (3) and the air outlet opening (6). The vacuum cleaner (1, 21, 31) is provided with air-guide means (15, 22, 37) for guiding at least part of the air towards the separator (9). In use, the air- guide means (15, 22, 37) provides an at least partially closed boundary in axial direction for a column of rotating air (17) around the separator (9). The minimum distance (Rag) of an edge (115, 122) of the air-guide means (15, 22, 37) to the rotating axis (11) of the separator (9) is larger than a distance (Rs) of the air entrance opening (109) of the separator (9) to the rotating axis (11) of the separator (9).