EP 2187159 A2 20100519 - A pressed-in joint of a pipe and a vane of a heater, its production method and the device used for performing the method
Title (en)
A pressed-in joint of a pipe and a vane of a heater, its production method and the device used for performing the method
Title (de)
Rohr-Rippe -Einpressverbindung für Heizungsvorrichtung, Herstellungsverfahren dafür und die zur Durchführung des Verfahrens verwendete Vorrichtung
Title (fr)
Joint par emmanchement d'un tube et d'une ailette pour appareil de chauffage, son procédé de production et dispositif utilisé pour effectuer le procédé
Publication
Application
Priority
CZ 2008727 A 20081114
Abstract (en)
A pressed-in joint (1) of a pipe (2) and a vane (3) of a heater (4) is created by means of an inner spiral groove (6) protruding to the outside surface of the pipe (2) as an outer spiral protrusion (7) imbedded with overleap in a hole (12) in the vane (3) or in a mouth (5) or a fringe (13) of the vane (3). The pressed-in joint (1) is made by means of a rotary rolling broach (14) furnished on its surface with at least two rolling balls (15, 15') forming the inner spiral groove (6) and the outer spiral protrusion (7) by rotating and sliding the broach (14) inside the pipe (2). The rotary rolling broach (14) has advantageously three rolling balls (15, 15', 15"), embedded with the possibility of adjusting their radial and axial positions. The inner spiral groove (6) causes sinuous flow of heat conducting media in the pipe (2) and better heat transfer to the pipe (2). The outer spiral protrusion (7) makes fix non-demountable connection of the pipe (2) with the vane (3) and improves the heat transfer conditions between the pipe (2) and the vanes (3).
IPC 8 full level
F28F 1/08 (2006.01); F28F 1/24 (2006.01); F28F 1/32 (2006.01); F28F 1/42 (2006.01)
CPC (source: EP)
F28F 1/08 (2013.01); F28F 1/24 (2013.01); F28F 1/32 (2013.01); F28F 1/42 (2013.01); F28F 1/422 (2013.01)
Citation (applicant)
- EP 0183211 A2 19860604 - NORSK HYDRO AS [NO]
- GB 2146422 A 19850417 - CRYOMEC AG
- EP 1412690 A1 20040428 - LAP CEK FRANTISEK [CZ]
- WO 2006056189 A1 20060601 - WEBASTO AG FAHRZEUGTECHNIK [DE], et al
- BG 108367 U 20050531 - KALENSKI PETUR [BG]
- JP 2002350082 A 20021204 - HITACHI CABLE
- JP H0970612 A 19970318 - FURUKAWA ELECTRIC CO LTD
- JP 2001347311 A 20011218 - FURUKAWA ELECTRIC CO LTD
- US 5724844 A 19980310 - SAEKI CHIKARA [JP]
- EP 0795363 A2 19970917 - OUTOKUMPU COPPER PRODUCTS OY [FI]
Designated contracting state (EPC)
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 SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2187159 A2 20100519; CZ 2008727 A3 20100526; CZ 301687 B6 20100526
DOCDB simple family (application)
EP 09000697 A 20090120; CZ 2008727 A 20081114