Ventilation Apparatus with Internal Swirler for Safe Vortex Suction
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Solution Overview
Problem
Existing ventilation apparatuses face challenges in effectively suctioning contaminated air, especially when installed near walls or obstacles, leading to deteriorated suction performance and safety concerns due to exposed high-speed swirler components.
Innovation Solution
A ventilation apparatus design featuring a vortex forming device positioned lower than the suction fan, with a swirler rotated at the lower portion of the casing and a driving motor, includes a flow guide to direct air downward, and a compact casing arrangement that optimizes part placement, preventing contaminated air from being raised and improving suction efficiency while ensuring user safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the swirler is exposed to the outside for vortex formation, then suction performance is improved, but user safety deteriorates
Solution Approach 1:
The swirler is extracted from the exposed position and relocated to the interior of the exhaust pipe, where it remains protected from user access while still functioning to generate vortex for contaminant suction
Solution Approach 2:
The swirler is nested within the exhaust pipe structure, positioned inside the pipe rather than exposed externally, allowing the vortex formation function to be maintained while the component is concealed within the existing structural envelope
2Object-affected harmful factors
If the driving unit and swirler are located inside the exhaust pipe, then user safety is improved, but installation position flexibility deteriorates
Solution Approach 1:
The swirler is oriented with its rotation axis extending in the axial direction of the exhaust pipe, utilizing the longitudinal dimension of the pipe to accommodate the component while maintaining safe enclosure
Solution Approach 2:
The swirler is designed as a rotatable component that can be positioned at different locations within the exhaust pipe, allowing flexibility in installation while maintaining the safety benefit of being enclosed within the pipe structure
3Productivity
If the swirler rotates at higher speed for better vortex formation, then suction performance is improved, but safety risks increase
Solution Approach 1:
The swirler is extracted from external exposure and placed inside the exhaust pipe, allowing high-speed rotation to generate effective vortex while the pipe structure prevents user contact with the rapidly rotating blades
Solution Approach 2:
The high-speed rotating swirler is nested within the protective envelope of the exhaust pipe, enabling the component to operate at high speeds for effective contaminant suction while being concealed and protected within the existing structural envelope
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 design enhances suction performance by forming a vortex under the apparatus, preventing air from being spread along walls, improving safety by keeping the swirler out of user access, and allowing for a compact, efficient ventilation system.
Implementation Method 1
a vortex forming device received in the casing and including a swirler rotated at a lower portion of the casing to generate the vortex
Data Source
AI summary
The present disclosure relates to a ventilation apparatus. The ventilation apparatus of the present disclosure comprises: a casing; a suction device accommodated in the casing and having a suction fan for generating a suction force for sucking in air; and a vortex forming device accommodated in the casing and having a swirler rotating below the casing to form a vortex and a driving motor for rotating the swirler, wherein the swirler includes a rotating plate having an air passage hole and a plurality of blades arranged and spaced apart in a circumferential direction along the rim of the rotating plate, and the vortex forming device is positioned lower than the rotation center of the suction fan in the casing.