Ceiling Fan Deflector for Adjustable Airflow Direction
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Solution Overview
Problem
Conventional ceiling fans lack efficient airflow directionality and control, which can lead to suboptimal air circulation and increased noise and vibration.
Innovation Solution
A ceiling fan design featuring a motor housing with an annular interior passage and a deflector with upper and lower angled surfaces that can be adjusted to direct airflow either upward or downward, utilizing a motor and impeller to drive airflow through an annular inlet and outlet, and incorporating a set of guides to enhance airflow efficiency and reduce noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional ceiling fans use a centralized rotating motor with blades, then the structure is simple and easy to manufacture, but the airflow directionality is poor and air circulation efficiency is suboptimal
Solution Approach 1:
The ceiling fan is divided into distinct functional modules: a motor housing containing the motor, an impeller assembly with blades mounted on a shaft, and a deflector assembly. This segmentation allows each component to be optimized independently for its specific function while maintaining overall system efficiency.
Solution Approach 2:
An impeller assembly is introduced as an intermediary component between the motor and the air stream. The impeller with its curved blades efficiently transfers mechanical energy from the motor to the air, creating controlled airflow patterns that improve circulation efficiency compared to direct-blade designs.
2Productivity
If ceiling fans lack adjustable airflow direction control, then the device structure is simpler, but the air circulation performance is suboptimal
Solution Approach 1:
The deflector assembly is designed to be rotatable relative to the motor housing, allowing the airflow direction to be dynamically adjusted. This dynamic adjustment capability enables optimization of air circulation for different room configurations and requirements without complicating the basic operation.
Solution Approach 2:
The deflector serves multiple functions: it directs airflow in desired directions, creates decorative light patterns when light is present, and can be adjusted to different positions. This multi-functionality is achieved without adding significant operational complexity, as a single rotational movement controls all these functions.
3Object-affected harmful factors
If ceiling fans operate without optimized airflow guidance, then the structure is simpler, but noise and vibration increase
Solution Approach 1:
The impeller blades are designed with specific curved geometries and angles that optimize airflow parameters, reducing turbulence and associated noise and vibration. The deflector assembly further refines airflow parameters by directing streams in controlled patterns, minimizing chaotic air movement.
Solution Approach 2:
The motor housing is designed to capture and redirect exhaust air from the motor in a controlled manner, converting potentially harmful turbulent exhaust into useful directed airflow. This approach reduces noise and vibration while improving overall air circulation efficiency.
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 allows for adjustable airflow direction, improving air circulation efficiency, reducing noise and vibration, and enhancing overall performance by directing airflow in a controlled manner.
Implementation Method 1
an impeller located within the body and rotatably driven by the motor to draw a volume of air through the interior passage from the inlet to the outlet
Implementation Method 2
a deflector coupled to the body with an upper angled surface and a lower angled surface each arranged at the outlet... the deflector directs air exhausting from the outlet in a generally upward direction when the deflector is in a first position with the lower angled surface confronting the second angled edge
Data Source
AI summary
A ceiling fan or ceiling fan includes a body defining an interior passage having an inlet and an outlet provided on the body. The inlet, outlet, and interior passage can be annular. An impeller is mounted within the interior passage and driven by a motor mounted within the body to draw a volume of air through the interior passage from the inlet to the outlet. A deflector is provided within the body and extending through the outlet including an upper angled surface and a lower angled surface to direct the air in a generally upward or generally downward direction, respectively.