(19)
(11) EP 2 551 622 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.06.2014 Bulletin 2014/24

(43) Date of publication A2:
30.01.2013 Bulletin 2013/05

(21) Application number: 12177930.0

(22) Date of filing: 26.07.2012
(51) International Patent Classification (IPC): 
F28D 7/10(2006.01)
F28F 1/40(2006.01)
 F28F 1/08(2006.01)
F28F 1/42(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: 26.07.2011 KR 20110006795 U

(71) Applicant: Choi, Gun Shik
Hwaseong-si, Gyeonggi-do 445-726 (KR)

(72) Inventor:
  • Choi, Gun Shik
    Hwaseong-si, Gyeonggi-do 445-726 (KR)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser 
Leopoldstrasse 4
80802 München
80802 München (DE)

   


(54) Double tube type heat exchange pipe


(57) A double tube type heat exchange pipe, in which a gas or liquid coolant passes through a flow path hole (101) to cool an inner tube (100), the gas or liquid coolant supplied through through-holes (201) of an outer tube (200) being collected in a first collecting groove formed in an inner tube (100), the gas and liquid coolant being guided to a spiral groove (102) of the inner tube (100) and continuously collides with a plurality of protrusions (103) to undergo heat exchange and be cooled, and the cooled gas and liquid coolant being collected in a second collecting groove (104b) of the inner tube (100) to be discharged to the outside via the through-hole (201) of the outer tube (200).







Search report









Search report