Bladeless fan
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Inspired by this Video I randomly saw on the internet
Then I remembered how Dyson bladeless fan worked, so I decided to combine those ideas and make a bladeless fan with a turbine for good visualisation.
This video shows the basic principle of how air flows through the bladeless fan's case and results in the Bernoulli effect to increase the flow rate. The creator also shared a Matlab file to calculate the cross-section after inputting some parameters.
When the air flows from the fan underneath(blue line) to the case, it will create a negative pressure zone in the centre of the case, then the air on the right (purple line), which have a positive pressure, will travel to the negative pressure zone then leave the case to the left.
However, the jet engine is designed to let air pass through the turbine (big red part) to the compressor ( the position on the right), so I will reverse the direction of the blades to achieve the goal of my design.
Bearings are added to the shaft and mounted on the holder for the turbine to spin smoothly.
Thought of using maglev to reduce the friction to a minimum?? But it will be a big challenge to put it together.
Manufacturing method:
make a mould with SLA 3d printing.
Use a vacuum forming machine or bending acrylic sheet to make the case.
Glue it together.
Separate the case into two parts, the yellow and pink parts on the cross-section graph. I will 3d print the cast, then use the vacuum forming machine in the IForge(hopefully they would let e use it) to create a thin and transparent case, then glue them together.
Turbine and compressor
I plan to 3d print the blade part by part then put them together.
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