How air flows through a vacuum cleaner?

[royp]

TL;DR Summary

How air travels from outside through inlet and then blown out by the fan through the outlet in a vacuum cleaner?

Hello,
Recently, I 'opened up' a Henry vacuum cleaner to trace the path the airflow takes - from inlet through to the outlet. The vacuum cleaner has 2 distinct sections:
1) A lower section with inlet pipe and the 'dust-bag'
2) and the upper section with the motor, fan and the outlet.

Now, the end of the inlet pipe (inside) has a bag fitted neatly and covering the hole of the pipe completely; and the bag appears to be without holes/perforations. As we switch on the device, the air along with dust particles enters the bag through the inlet pipe but how the air flows out? On the upper section, There is air continuously being blown out by the fan through the outlet.

Now the question is: how the air exit the dust-bag and maintains a continuous path/flow? Or is there any other explanation?

 

[Lnewqban]

Air passes through the porous material of the dust bag, most dirt remains inside.
Because the area of the bag is relatively big, the velocity of the air per unit of area is much smaller than through the ducts.
Please, see:
https://gogreenklean.com/how-a-vacuum-bag-works/

 

[royp]

Many thanks, Lnewqban.

 

[Lnewqban]

You are welcome, royp.