Cyclonic vacuum cleaner with multiple modes
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Solution Overview
Problem
Existing battery-powered handheld vacuum cleaners with cyclonic separators face performance issues when switching from low-flow to high-flow modes, as secondary cyclonic separators become choked, leading to reduced separation efficiency.
Innovation Solution
A vacuum cleaner design featuring a primary cyclonic separator and two sets of secondary cyclonic separators arranged in parallel, with a flow control device that allows air to bypass or flow through the secondary cyclonic separators, enabling optimal operation in both low-flow and high-flow modes by adjusting airflow rates and maintaining separation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the vacuum cleaner operates in high-flow mode to clean heavily soiled floors, then the airflow rate increases and cleaning power improves, but the secondary cyclonic separators become choked and separation efficiency deteriorates
Solution Approach 1:
The secondary cyclonic separators are divided into a first set and a second set that can be independently controlled. The flow control device selectively isolates the second set from airflow, allowing the first set to handle high-flow conditions while the second set remains protected from choking. This segmentation enables the system to maintain separation efficiency across different operating modes.
2Use of energy by moving object
If the vacuum cleaner operates in low-flow mode to conserve battery power, then energy consumption decreases and battery life extends, but the airflow rate reduces and cleaning effectiveness diminishes
Solution Approach 1:
The flow control device dynamically adjusts the airflow configuration by switching between isolating and connecting the second set of cyclonic separators. This dynamic reconfiguration allows the system to optimize performance for different cleaning scenarios without compromising separation efficiency, enabling effective operation in both low-flow and high-flow modes.
3Productivity
If multiple secondary cyclonic separators are arranged in parallel to handle high airflow, then the airflow capacity increases, but the complexity of the separating apparatus increases and control becomes more difficult
Solution Approach 1:
The flow control device acts as an intermediary that simplifies the control of the complex parallel separator arrangement. By providing a single control mechanism that can isolate or connect the second set of separators, it manages the complexity of having multiple parallel paths while maintaining the airflow capacity benefits of the parallel configuration.
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 that both primary and secondary cyclonic separators operate at optimal efficiency in both modes, preventing choking and maintaining high pick-up performance for cleaning lightly and heavily soiled surfaces without compromising battery power.
Implementation Method 1
a separating apparatus comprising a primary cyclonic separator and a secondary cyclonic separator
Implementation Method 2
The cyclonic separators are configured to provide optimum separation efficiency
Data Source
AI summary
A vacuum cleaner comprising a separating apparatus comprising a first cyclonic separator and a second cyclonic separator arranged in parallel with the first cyclonic separator, an airflow generator arranged to generate an airflow through the first and second cyclonic separators, and a flow control device for controlling the flow of air through the second cyclonic separator. The vacuum cleaner has a first configuration in which the flow control device is arranged to prevent flow of air through the second cyclonic separator such that, in use, air flows through the first cyclonic separator and bypasses the second cyclonic separator, and a second configuration in which the flow control device is arranged to permit flow of air though the second cyclonic separator such that, in use, air flows through the first and second cyclonic separators.