Bladeless Ceiling Fan With Enclosed Blade Tips for Turbulence Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional ceiling fans with blades generate noise and vibration due to aerodynamic turbulence caused by rotating blades, which reduces efficiency and consumer satisfaction.
Innovation Solution
A bladeless ceiling fan design that incorporates a stationary inner and outer housing with a tip housing that encloses the blade tips, reducing turbulence and improving airflow efficiency by minimizing the aerodynamic disruption at the blade-tip interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional ceiling fans use rotating blades to move air, then cooling effect is achieved, but noise and vibration are generated due to aerodynamic turbulence
Solution Approach 1:
The blade structure is segmented into multiple blade elements distributed around the rotor, each contributing to air movement while reducing individual turbulence intensity. The bladeless design further segments the airflow path through the housing structure, separating turbulent blade-tip interactions from the main airflow channel.
Solution Approach 2:
The traditional exposed blade tips are extracted and enclosed within the housing structure. The bladeless design removes the harmful blade-tip interface from the external environment, containing turbulence within the housing while maintaining the cooling function through controlled airflow paths.
2Productivity
If rotating blades are used to circulate air, then air movement is achieved, but aerodynamic turbulence reduces efficiency
Solution Approach 1:
The housing incorporates curved and rounded surfaces, particularly at the blade-tip interface, to smooth airflow transitions. The aerodynamic shaping of the housing interior reduces flow separation and turbulence, improving energy efficiency while maintaining effective air circulation.
Solution Approach 2:
The housing structure acts as an intermediary between the rotating blades and the external environment. It mediates the turbulent airflow generated by blade rotation, transforming it into smoother, more efficient airflow patterns that reduce energy loss while maintaining productivity.
3Device complexity
If blade tips are exposed to reduce complexity, then device simplicity is maintained, but aerodynamic disruption increases
Solution Approach 1:
The housing structure merges the functions of aerodynamic enclosure and structural support. By integrating the blade-tip enclosure into the existing housing design, the patent adds turbulence-reduction functionality without significantly increasing overall device complexity, maintaining structural simplicity while reducing aerodynamic disruption.
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 results in a quieter, more efficient, and smoother operation with reduced turbulence, enhancing consumer satisfaction and extending the fan's lifespan.
Implementation Method 1
The ceiling fan uses a motor that drives a set of fan blades to rotate and circulate air. Rotating blades drive air, often to achieve a cooling effect.
Implementation Method 2
A tip housing coupled to the blade tips and at least partially received within the tip channel... reducing turbulence and improving airflow efficiency by minimizing the aerodynamic disruption at the blade-tip interface.
Data Source
AI summary
A ceiling fan comprising a stationary inner housing defining a first interior, a stationary outer housing that circumscribes at least a portion of the stationary inner housing and defines a second interior, a motor assembly located within the first interior and having a rotor, and a plurality of blades extending between corresponding roots and tips, with the roots coupled to the rotor and the tips extending toward to the outer housing. The tips are coupled to a tip housing that can at least partially be received within a portion of the outer housing. A flow channel is formed between the stationary inner housing and the stationary outer housing.