Blowers
m |
|||
| Line 17: | Line 17: | ||
http://www.superchargersonline.com/content.asp?id=85................................................ | http://www.superchargersonline.com/content.asp?id=85................................................ | ||
| − | There are | + | There are several types of blowers; Roots, Screw and Centrifugal to name the most popular today. In the past there have also been sliding vane (Judson) and axial flow (Latham) units, piston type (like the unit on the top of your air compressor) and probably some other types I've never heard of. Let's look at each one and list some sites for finding them...... |
ROOTS TYPE.... | ROOTS TYPE.... | ||
| − | These blowers were never designed to compress air, just to move air from one place to another, sort of like your house fan. No internal compression takes place in the blower, but the restriction of the closed intake valves in your motor allow the buildup of pressure in the intake manifold and head ports. The centrifugal and screw type blowers make pressure inside the blower. | + | These blowers were never designed to compress air, just to move air from one place to another, sort of like your house fan. You'll find several explanations of why the Roots brothers originally designed this blower, but the one I like the best is that it was designed to blow air down into mine shafts so the miners could breathe. No internal compression takes place in the blower, but the restriction of the closed intake valves in your motor allow the buildup of pressure in the intake manifold and head ports. The centrifugal and screw type blowers make pressure inside the blower. |
| − | There are Roots designs which have 2 lobes on each rotor and others with 3 lobes on each rotor. There are also variations where the rotors are "twisted" into a helix along their axis to help prevent the "backwash" of air between the rotors and reduce "buffeting"............................. | + | There are Roots designs which have 2 lobes on each rotor and others with 3 lobes on each rotor. There are also variations where the rotors are "twisted" into a helix along their axis to help prevent the "backwash" of air between the rotors and reduce "buffeting". Here's the aeorspace engineering definition of buffeting afforded by answers.com: "The beating of an aerodynamic structure or surfaces by unsteady flow, gusts, and so forth. The irregular shaking or oscillation of a vehicle component owing to turbulent air or separated flow."...................................... |
| − | http://en.wikipedia.org/wiki/Roots_blower | + | http://en.wikipedia.org/wiki/Roots_blower........................................................... |
Here's a neat animation showing a straight-on view of the rotors in a 3-lobe Roots. Air entering is in blue and air exiting is in red................................................................... | Here's a neat animation showing a straight-on view of the rotors in a 3-lobe Roots. Air entering is in blue and air exiting is in red................................................................... | ||
http://www.mekanizmalar.com/roots3.html............................................................. | http://www.mekanizmalar.com/roots3.html............................................................. | ||
Your Privacy Choices