Vacuum Cleaner Motor Rectifier Shroud

A handheld car vacuum cleaner bought from PDD for a few yuan. The whole product is rubbish, but at least it's cheap

Disassembled it into pieces, each component used elsewhere

I roughly checked its vacuuming structure and found it only had a single turbine blade. To make it work better, it needed improvement. So I looked for reference images online, drew it myself, and made a shroud

I didn't know what to name it because I couldn't find any separate accessories for sale or introduction, so I named it the Rectifying Air Shroud

I speculate that this structure

1 is to enclose the space and increase the fan blade's vacuum suction power

2 is to effectively rectify the inhaled air into a regular cyclonic state, while also facilitating heat dissipation for the motor, and the blown air is suitable for use as a small blower (similar to the duct of a ducted fan)

I wonder if any knowledgeable teachers could explain it to me

The disassembled motor seems to be a 260 brushed type, with a diameter of about 24mm

After making it, I used it in other designs, but felt it wasn't quite suitable, so I disassembled it again

For the joint of the two accessories, I used single-sided sponge tape to reduce tolerance, then snapped them directly together for a tight fit. You can also choose to glue them yourself