Cleaner Head Scraper with Profiled Edge for Brushbar Debris Removal
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Solution Overview
Problem
Cleaner heads for vacuum cleaners often face issues with debris such as dust, dirt, food particles, and hair getting stuck on the bristles or trapped within the cleaner head, leading to reduced efficiency and maintenance challenges.
Innovation Solution
A cleaner head design featuring a scraper with a profiled working edge that extends in the longitudinal direction of the brushbar, positioned to scrape debris and direct it towards a dirty air outlet using airflow, enhancing debris removal and reducing entrapment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a brushbar is used to improve debris pickup from carpets, then cleaning effectiveness is improved, but debris becomes stuck on the bristles or trapped within the cleaner head
Solution Approach 1:
The scraper working edge extracts debris that has accumulated on the brushbar bristles by scraping it off. This removes the harmful accumulation that would otherwise reduce cleaning effectiveness and cause maintenance issues.
Solution Approach 2:
The scraper acts as an intermediary element between the brushbar and the debris removal system. It facilitates the transfer of debris from the brushbar surface to the airflow path leading to the dirty air outlet.
2Productivity
If debris accumulates on the brushbar, then cleaning effectiveness deteriorates, but adding a scraper increases device complexity
Solution Approach 1:
The scraper is designed with a specific localized profile at its working edge that creates favorable airflow conditions. This localized geometric feature directs airflow to sweep debris along the scraper edge and toward the dirty air outlet, providing effective debris removal with minimal additional structure.
3Productivity
If the working edge is positioned to scrape debris effectively, then debris removal is improved, but debris may accumulate at the working edge
Solution Approach 1:
The scraper working edge profile is designed to utilize pneumatic forces from the airflow passing through the cleaner head. The airflow follows the contour of the working edge, creating a sweeping effect that prevents debris accumulation and continuously transports debris toward the dirty air outlet.
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 solution effectively removes debris from the brushbar, improving cleaning efficiency and reducing maintenance by utilizing airflow to draw debris along the scraper's edge and out of the cleaner head, ensuring smooth operation and easy maintenance.
Implementation Method 1
debris which accumulates at the working edge is drawn by the airflow through the cleaner head along the working edge towards the dirty air outlet
Data Source
AI summary
A cleaner head for a cleaning appliance, comprising a brushbar, a housing defining a chamber which at least partially surrounds the brushbar, the chamber having a dirty air inlet and a dirty air outlet, and a scraper having a working edge which extends in the longitudinal direction of the brushbar. The scraper is arranged such that, in use, the working edge scrapes debris entrained by the brushbar from the brushbar. The working edge has a profile which is shaped such that debris which accumulates at the working edge is drawn by the airflow through the cleaner head along the working edge towards the dirty air outlet.