Cyclonic Inlet Nozzle Geometry for Handheld Vacuum Separation
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Solution Overview
Problem
Conventional handheld vacuum cleaners face challenges in efficiently separating and collecting debris due to inadequate design of the cyclonic separator assembly, leading to reduced suction power and increased clogging, especially when used with various cleaning attachments.
Innovation Solution
The design incorporates a cyclonic separator assembly with a unique inlet nozzle that increases in height downstream, forming an acute angle with the separator axis, and a removable cyclonic chamber that allows for improved airflow and debris separation, along with a battery receptacle that intersects the separator axis, enhancing structural integrity and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional cyclonic separator assembly is used, then the structure is simple, but debris separation efficiency is poor and clogging occurs frequently
Solution Approach 1:
The cyclonic separator assembly is divided into multiple independent components: the cyclonic chamber, inlet nozzle, dirt collection region, and main body. The cyclonic chamber can be removed separately from the main body for cleaning and maintenance, allowing each component to be optimized for its specific function while maintaining overall system efficiency and reducing clogging.
Solution Approach 2:
The inlet nozzle is designed with a three-dimensional configuration where the inlet axis and separator axis intersect at an acute angle. The nozzle increases in height in the downstream direction, creating a complex spatial structure that improves airflow dynamics and debris separation efficiency beyond what a simple two-dimensional design could achieve.
2Ease of operation
If the cyclonic separator assembly is fixed, then structural integrity is maintained, but access for cleaning and maintenance is difficult
Solution Approach 1:
The cyclonic separator assembly is segmented into removable and fixed portions. The cyclonic chamber and inlet nozzle can be removed from the main body as a unit for cleaning, while the main body remains fixed to maintain structural integrity. This segmentation allows easy access for maintenance without compromising the overall structural strength.
Solution Approach 2:
The cyclonic separator assembly transitions from a static fixed structure to a dynamic removable structure. The cyclonic chamber is designed to be selectively removable from the main body, allowing the system to adapt between a closed integrated state for operation and an open separated state for cleaning and 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
This configuration enhances the vacuum's suction power, improves debris separation efficiency, and allows for easy maintenance, while the removable cyclonic separator assembly facilitates better access for cleaning and reduces clogging issues.
Implementation Method 1
a cyclonic chamber in fluid communication with the dirty air inlet. The cyclonic chamber defines a separator axis
Implementation Method 2
debris separated in the cyclonic chamber
Data Source
AI summary
A handheld vacuum cleaner (10), including a main body (22) having a handle (98), a motor assembly (114) positioned within the main body, and a cyclonic separator assembly (26) removably coupled to the main body. The cyclonic separator assembly includes an inlet nozzle (42) having a dirty air inlet (14) positioned in the front of the handheld vacuum cleaner when the cyclonic separator assembly is coupled to the main body, and a cyclonic chamber (30) in fluid communication with the dirty air inlet. The cyclonic chamber defines a separator axis (34). The cyclonic separator assembly further includes a dirt collection region (38) configured to receive debris separated in the cyclonic chamber. The inlet nozzle includes an upstream height (270) measured perpendicular to the inlet axis and a downstream height (274) measured parallel to the separator axis. The downstream height is larger than the upstream height.