EP 2375875 A1 20111012 - SWIRLER FOR PLASMA CUTTING TORCHES
Title (en)
SWIRLER FOR PLASMA CUTTING TORCHES
Title (de)
DRALLERZEUGER FÜR PLASMA-SCHNEIDBRENNER
Title (fr)
DIFFUSEUR POUR TORCHES A DECOUPAGE PLASMA
Publication
Application
Priority
IT BO20100223 A 20100412
Abstract (en)
A diffuser (200) for a plasma cutting torch comprises a substantially annular main body (201) with a main axis (X), an annular lower wall (204), an annular upper wall (205) and a cylindrical outer lateral wall (206) and at least one channel (207) for the passage of gas; the channel (207) having an inlet (207a) located on the outer lateral surface (206) and an outlet (207b) positioned at the annular lower wall (204) and an axis (A) of extension which is slanting relative to the main axis (X) ; the projection of the axis (A) of the channel (207) in a plane "at" forming, with the axis (a), an angle (Õ) in a Cartesian reference system whose centre lies at (O), with an axis (a) parallel with the main axis (X), an axis (r) in a radial direction and an axis (t) perpendicular to the axes (a) and (r); the angle (Õ) is sized so as to impart to the velocity versor of the gas exiting the channel (207) an axial component "Vass" and a tangential component "Vtan" in such a way that the ratio between the axial component "Vass" and the tangential component "Vtan" is between 0.27 and 0.70, that is to say: 0.27 ¤ Vass V tan ¤ 0.70.
IPC 8 full level
H05H 1/34 (2006.01)
CPC (source: EP US)
H05H 1/34 (2013.01 - EP US); H05H 1/3468 (2021.05 - EP); H05H 1/3478 (2021.05 - EP)
Citation (applicant)
- US 5734143 A 19980331 - KAWASE TORU [JP], et al
- US 2007284340 A1 20071213 - JORGENSEN MORTEN [US]
Citation (search report)
- [I] US 5734143 A 19980331 - KAWASE TORU [JP], et al
- [I] US 2007284340 A1 20071213 - JORGENSEN MORTEN [US]
- [A] US 5170033 A 19921208 - COUCH JR RICHARD W [US], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2375875 A1 20111012; EP 2375875 B1 20160727; IT 1399441 B1 20130419; IT BO20100223 A1 20111013; PL 2375875 T3 20170131
DOCDB simple family (application)
EP 11161871 A 20110411; IT BO20100223 A 20100412; PL 11161871 T 20110411