(19)
(11) EP 2 573 401 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.04.2014 Bulletin 2014/14

(43) Date of publication A2:
27.03.2013 Bulletin 2013/13

(21) Application number: 12185115.8

(22) Date of filing: 19.09.2012
(51) International Patent Classification (IPC): 
F04D 13/06(2006.01)
F04D 29/42(2006.01)
 F04D 29/58(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: 26.09.2011 TW 100217953

(71) Applicant: Fang, Wen-Che
Pingtung County (TW)

(72) Inventor:
  • Fang, Wen-Che
    Pingtung County (TW)

(74) Representative: Becker Kurig Straus 
Patentanwälte Bavariastrasse 7
80336 München
80336 München (DE)

   


(54) Liquid cooling pump


(57) A liquid-cooling pump has a casing device (10), a driving device (20) and an impeller (30). The casing device (10) has an inlet (111) and an outlet (112). The driving device (20) is mounted in the casing device (10) and has an oil seal (22a) and a shaft seal (22b). The oil seal (22a) and the shaft seal (22b) are adjacent to the outlet (112). The impeller (30) is adjacent to the outlet (112). Therefore, the oil seal (22a) and the shaft seal (22b) adjacent to the outlet (112) are under negative pressure to prevent the oil seal (22a) and the shaft seal (22b) from being directly impacted by water. Then, a tightness degree between the shaft (21) and the shaft seal (22b) is reduced and can prevent an abrasion between the shaft (21) and the shaft seal (22b) and increase the waterproof effect.







Search report









Search report