Multi-Cyclone Dust Collector Flow Guides to Reduce Pressure Loss
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Solution Overview
Problem
The multi-cyclone dust collector in cordless vacuum cleaners experiences pressure loss and airflow loss due to pressure differences between inlet and outlet holes in the secondary cyclone, which reduces the suction force and cleaning performance.
Innovation Solution
The design includes a secondary cyclone with multiple inlet holes arranged tangentially on its outer surface and an upper cover with flow guides to minimize airflow interference, featuring an outlet pipe with spiral guide surfaces and blocking surfaces to direct air efficiently, reducing pressure loss and airflow interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple inlet holes are provided in the secondary cyclone, then the air intake capacity is improved, but the airflow interference between adjacent inlet holes increases causing pressure loss
Solution Approach 1:
A flow guide is introduced as an intermediary component between adjacent inlet holes to mediate the airflow. The flow guide includes a guide surface that directs air from each inlet hole along a predetermined path and a blocking surface that prevents air from adjacent inlet holes from interfering with each other, thereby reducing turbulence and pressure loss while maintaining high air intake capacity
Solution Approach 2:
The flow guide provides different local functions at different locations: the guide surface optimizes airflow direction at the inlet hole openings, while the blocking surface prevents interference between adjacent flows. This localized functional differentiation allows each region to address specific airflow issues, resolving the contradiction between quantity and energy loss
2Productivity
If the outlet pipe is inserted into the outlet hole to discharge air, then the air discharge efficiency is improved, but the airflow interference between inlet holes and outlet pipe increases
Solution Approach 1:
The flow guide acts as an intermediary between the inlet holes and the outlet pipe, organizing and directing airflow from multiple inlet holes before it reaches the outlet pipe. This prevents chaotic airflow patterns and reduces interference, allowing efficient discharge without energy loss from turbulence
3Loss of energy
If flow guides are provided to minimize airflow interference, then the pressure loss is reduced, but the device complexity increases
Solution Approach 1:
The flow guide merges multiple functions into a single component: it provides guidance surfaces for airflow direction, blocking surfaces to prevent interference, and integrates with the outlet pipe structure. This consolidation reduces the number of separate parts while achieving pressure loss reduction, balancing performance improvement with structural simplicity
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 enhances the collection efficiency of the multi-cyclone dust collector by minimizing pressure and airflow losses, thereby improving the suction force and cleaning performance of the vacuum cleaner.
Implementation Method 1
a multi-cyclone dust collector including a primary cyclone to separate and collect waste and dust from air containing waste introduced from the outside, and a plurality of secondary cyclones to separate fine dust from the air discharged from the primary cyclone
Implementation Method 2
an upper cover provided to cover an upper end of the secondary cyclone and including an outlet pipe inserted into the outlet hole to discharge the air, and wherein the upper cover further includes a plurality of flow guides disposed between adjacent inlet holes to minimize airflow interference between the adjacent inlet holes
Implementation Method 3
In the case of the secondary cyclone, a pressure loss may occur due to a pressure difference between air entering an inlet hole and air exiting an outlet hole
Data Source
AI summary
A multi-cyclone dust collector and a vacuum cleaner having the same are provided. The multi-cyclone dust collector includes a primary cyclone separator provided to separate waste primarily from introduced waste-containing air, and a secondary cyclone separator installed inside the primary cyclone separator to separate dust from air discharged from the primary cyclone separator. The secondary cyclone separator includes a secondary cyclone provided with two inlet holes through which air is introduced and an outlet hole through which the introduced air is discharged, and an upper cover provided to cover an upper end of the secondary cyclone and including an outlet pipe inserted into the outlet hole to discharge the air. The upper cover further includes a plurality of flow guides disposed between adjacent inlet holes to minimize airflow interference between the adjacent inlet holes and provided on an outer surface of the outlet pipe to correspond to the at least two inlet holes.