Connect this spiral inlet with the rest of the body of the workpiece

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1

Hi all 

I design this filter with Catia. The following image is an example found on the internet of what  I am trying to achieve.

The inlet of this filter is in the form of a spiral (Turbo inlet style Turbo charger etc.) (tangential air inlet); I drew this spiral with Catia (figure attached)

My problem is that I can't imagine how I can integrate this spiral into the rest of the filter body (the cylindrical upper part in the attached figure)

Can you give me an idea please (whether it's a part design or generative shape design)

Thank you in advance


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2

Hello

On the photo the inlet and outlet are perpendicular if this is your case you will have to start by modifying the spiral and adding a straight line (inlet) that you connect in curvature with the coiler (Under GSD).

You talk about a connection with the cylindrical surface, but on the photo it is a plastic part so the connection will be made with two inverted cones (hence a sweeping diameter that increases from the entrance to the bottom of the spiral).

Edit : if the diameter must remain constant then the spiral must be conical (follow the draft angle).