(19)
(11) EP 2 369 042 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.03.2015 Bulletin 2015/13

(43) Date of publication A2:
28.09.2011 Bulletin 2011/39

(21) Application number: 11156211.2

(22) Date of filing: 28.02.2011
(51) International Patent Classification (IPC): 
D01H 1/115(2006.01)
 D01H 4/02(2006.01)
(84) Designated Contracting States:
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 States:
BA ME

(30) Priority: 25.03.2010 JP 2010070761

(71) Applicant: Murata Machinery, Ltd.
Minami-ku Kyoto-shi Kyoto 601-8326 (JP)

(72) Inventor:
  • Mori, Hideshige
    Kyoto-shi Kyoto 612-8686 (JP)

(74) Representative: Zimmermann, Tankred Klaus et al
Schoppe, Zimmermann, Stöckeler Zinkler, Schenk & Partner mbB Patentanwälte Postfach 15 15 29
80049 München
80049 München (DE)

   


(54) Pneumatic spinning device and spinning machine


(57) A pneumatic spinning device includes a hollow guide shaft (20) , and a nozzle block (34). A portion of the hollow guide shaft (20) is located within a whirling chamber. A whirling chamber is formed in the nozzle block (34). Four air injecting nozzles (27) that inject compressed air from a nozzle opening (27a) opening into the whirling chamber to generate whirling airflow in the whirling chamber are formed in the nozzle block (34). The whirling chamber has a columnar portion formed as a substantially columnar shape having a constant diameter (D2). A height (H1) of the whirling chamber is equal to or smaller than the diameter (D2) . A flow path cross-sectional area at a downstream end of the whirling chamber in a fiber feeding direction (a position A2) is formed smaller than a flow path cross-sectional area of the whirling chamber at a position where the nozzle opening (27a) is formed.







Search report









Search report