Foaming methods of liquids (relatively compact products)

[Helepolis]

Hello all,

I need to find a viable method to foam a liquid that is pushed out from a capsule.
Basically i figured 3 methods that might work but I'm struggling to find any relevant or useful info.

1) Foaming valve - the majority of searches give back links for buying the foaming valve for soap dispensers and for car washes.
This is my favorite solution at the moment as it has no moving parts (disregarding the pump in the dispenser) and it sound as the simplest method for the job.
The properties of the liquid are known and only that liquid will be foamed.

2) Magnetic foamer (similar to Nespresso milk frother) - this option is the second best.

3)Ultrasonic Foaming - my least favorite solution but an option non the less, but again all the search resaults i get are for sonic bear foamers, to be honest i'm not even sure that there are commercial products for that job (in scales that can fit in a relatively mobile device).

So basically i need help with some relevant information, just to get going (something like commercial or industrial names).

 

[btrueblood]

I'd think the bears would object to being foamed?

There are a lot of liquids that foam due to pressure release (whipped cream dispensers), and others due to chemical reactions (gorrilla glue - a urethane foam that reacts when exposed to humidity), to add two more methods to your list.

There are a lot of questions that I'd need to ask to get anywhere near an idea of the "best" method. Even then...I once worked on methods to automatically foam/steam/dispense milk for automatic espresso drinks machines, which is complicated by the fact that milk compositions change by region, cow breed, and seasonal variations in the cow's feed. Milk need a lot of mechanical mixing to properly froth, and that amount of mixing required varies as noted.

Good luck.

 

[Helepolis]

I'm trying to foam a type of Surfactant (Albumin), i know it can be done as it foams up quite easily using a regular mixer.

I think that I'll focus on the Foaming Valve, but i can't find any research material on the formation of foams in liquids (depending on parameters such as liquid density, flow rates, pressure, geometry etc.).

 

[Strong]

https://books.google.com/books/about/Foams.html?id=pjxRAAAAMAAJ

Walt