help choosing airblower for sucking fumes away

[MatD]

Hi,

I'm looking for an airblower to suck the fumes away from the underside of the workpiece.
I've looked around but there are so much different blowers.
Anyone can give me advise on the power or volume (cubic meters of air) I need?
Cutting area is about 600x1200mm.

Thanks!

[MatD]

I've found these pictures of a company that makes a laser cutter/engraver with a bed size of 1200x900.
They use this airblower:






Anyone can estimate the power of this one?

[Litografa]

For GCC lasers with table 910x680 mm we reccomend 1 kWt pump (500 cub.m/minute). But pump on picture is more powerful - I think 2-5 kWt. The possible reason is that GCC laser have closed type construction, or big chinese lasers have open table construction, so they need more powerful suction.

Anyway there is mistake on pictures - you need filter between laser and pump. We usually put air filter from trucks.

PS Where you found this pictures? Looks like old soviet military pump

[MatD]

this is the site where I found it:
http://iehk.net/index.html

[MatD]

Is there another way to suck away the fumes?
These 1kw pumps seem pretty expensive.
Right now I have air assist coming out of the nozzle.
Could I add a second hose next to the nozzle that sucks away the fumes?
Or would this disrupt the air assist too much?

thanks

[SkipW]

Is there another way to suck away the fumes?
These 1kw pumps seem pretty expensive.
Right now I have air assist coming out of the nozzle.
Could I add a second hose next to the nozzle that sucks away the fumes?
Or would this disrupt the air assist too much?

thanks

I don't think a second hose next to the nozzle would work very well. You wouldn't get the volume of air flow and the smoke would be building up in the cabinet while waiting to exhaust.

I have a 600x900 machine and I use the 1200 cfm blower from my dust collector.

Something like this would work for you, or here is a cheaper one with more cfm's.