Fan Assembly Nozzle with Dual Airflow Outlets
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Solution Overview
Problem
Conventional fan assemblies lack the ability to deliver both amplified and non-amplified airflow options simultaneously, limiting user control over airflow delivery, especially in scenarios where purified air is desired without the cooling effect associated with amplified airflow.
Innovation Solution
A fan assembly with a nozzle system featuring a first air outlet for amplified airflow and a second air outlet for non-amplified airflow, where the airflow is directed to either outlet via a valve mechanism, allowing for adjustable airflow delivery based on user preferences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single air outlet is used for airflow delivery, then the device structure is simple, but the adaptability for different airflow delivery options is limited
Solution Approach 1:
The nozzle is divided into multiple independent air outlets (first air outlet and second air outlet), each capable of delivering different types of airflow. This segmentation allows the system to provide both amplified and non-amplified airflow options simultaneously, resolving the contradiction between adaptability and structural simplicity.
2Adaptability or versatility
If amplified airflow is delivered through the nozzle, then the cooling effect is enhanced, but the ability to deliver purified air without cooling effect is lost
Solution Approach 1:
A valve mechanism is introduced to dynamically control the direction of airflow, allowing users to switch between different air outlets based on their needs. The valve can direct airflow to the first air outlet for amplified cooling effect or to the second air outlet for purified air delivery without amplification, providing operational flexibility.
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
Enables users to choose between amplified and non-amplified airflow or deliver both simultaneously, providing flexibility in airflow delivery for thermal comfort and purified air applications, such as in winter or when heated air is provided.
Implementation Method 1
a motor-driven impeller for creating an airflow
Implementation Method 2
The nozzle defines a bore through which air from outside the fan assembly is drawn by any portion of the airflow that is emitted from the first outlet and which combines with the airflow emitted from the first air outlet to produce an amplified airflow
Implementation Method 3
The nozzle includes a Coanda surface over which the mouth is arranged to direct the primary airflow. The Coanda surface extends symmetrically about the central axis of the opening so that the airflow generated by the fan assembly is in the form of an annular jet having a cylindrical or frusto-conical profile
Data Source
AI summary
There is provided a fan assembly comprising a motor-driven impeller for creating an airflow and a nozzle comprising a first air outlet. The nozzle defines a bore through which air from outside the fan assembly is drawn by any portion of the airflow that is emitted from the first outlet and which combines with the airflow emitted from the first air outlet to produce an amplified airflow. The fan assembly further comprises a second air outlet arranged such that any portion of the airflow that is emitted from the second air outlet does not draw air through the bore defined by the nozzle thereby producing a non-amplified airflow.