EP0446824A2 - Echangeur de chaleur - Google Patents

Echangeur de chaleur Download PDF

Info

Publication number: EP0446824A2
Authority: EP; European Patent Office
Prior art keywords: diameter; tube; tulip; tubular; bulge
Prior art date: 1990-03-14
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP91103650A

Other languages

German (de)

English (en)

Other versions

EP0446824A3 (en

EP0446824B1 (fr

Inventor

Manfred Raith

Harald Rapp

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Mahle Behr GmbH and Co KG

Original Assignee

Behr GmbH and Co KG

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1990-03-14

Filing date

1991-03-09

Publication date

1991-09-18

1991-03-09 Application filed by Behr GmbH and Co KG filed Critical Behr GmbH and Co KG

1991-09-18 Publication of EP0446824A2 publication Critical patent/EP0446824A2/fr

1992-05-27 Publication of EP0446824A3 publication Critical patent/EP0446824A3/de

1994-10-12 Application granted granted Critical

1994-10-12 Publication of EP0446824B1 publication Critical patent/EP0446824B1/fr

2011-03-09 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
- F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
- F28F9/182—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding the heat-exchange conduits having ends with a particular shape, e.g. deformed; the heat-exchange conduits or end plates having supplementary joining means, e.g. abutments
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
- F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators

Definitions

the invention relates to a heat exchanger, in particular as an evaporator and / or condenser of an air conditioning system, which has tubes which are guided through fins and whose ends are tightly connected to one another via U-shaped tube bends, the ends of the tubes being widened as tube tulips with at least two regions of different diameter pick up the ends of the pipe bends and are preferably soldered with ultrasound using the dip soldering method, ventilation channels being provided for venting the solder gap between the tube tulip and the pipe bend end.
FR-OS 26 10 712 In a heat exchanger known from FR-OS 26 10 712, the pipe bend ends are simply inserted into the pipe tulips and soldered. For venting the solder gap, it has already been proposed to incorporate grooves in the pipe bend ends as ventilation channels. From FR-OS 26 10 712 it is also known to provide for better anchoring of the pipe bend ends at these notch deformations. The manufacturing effort is considerable here, however, and additional work steps or complex special devices for processing the pipe bend ends are required.
the invention is based on the object of designing a heat exchanger of the type mentioned at the outset in such a way that a reliable soldered connection between the pipe and the pipe bend can be achieved with little production outlay.
the invention provides that the tube tulip between the two cylindrical, different diameter areas is provided with at least one, but preferably distributed around the circumference with several bulges, the maximum distance of the bulge or bulges of the tube center axis is smaller to at most equal to the outer radius of the solder gap.
This bulge or bulges can advantageously be produced in one operation at the same time as the tube is widened in the region of the side part and the fins and the tube tulip.
the pipe bend ends do not have to be machined at all, so that a significant simplification of manufacture is achieved with reliable solder gap ventilation.
a particularly reliable ventilation of the solder gap can be achieved in that the end of the pipe bend soldered into the tube tulip only partially covers the bulge or bulges.
the widened, the lamella and possibly a side part projecting cylindrical area of the tube is smaller in diameter than the smallest inner diameter of the area of the tube tulip having bulges or bulges, the widening of the tube ends can produce the bulge or bulges and the tube tulip is formed in one operation with one tool in a particularly efficient and time-saving manner, if necessary fully automatically.
the tubular tulip in the area of the bulges can have a rounded, symmetrical polygonal cross-section (equilateral polygon), preferably a triangular cross-section, the smallest inside diameter of which corresponds to the diameter of the pipe bend end.
the smallest inner diameter of the region of the tube tulip having the bulges can be slightly smaller than the outer diameter of the tube bend end, in order to obtain resilient clamping points for securely holding the tube bend before and during soldering.
a device for shaping the tube tulip and simultaneous production of the ventilation channel or channels can particularly advantageously have a mandrel rod, at the free end of which, rotationally symmetrical to the mandrel rod axis, an expanding body with a spherical contour is provided, at least in the region of its outer diameter, the largest diameter of which corresponds to the inner diameter of the lamellae and, if applicable .
a polygonal ring being guided on the mandrel bar, displaceable up to the expansion body, the smallest diameter of which corresponds to the diameter of the pipe bend end, a rotationally symmetrical punch with a circular cross section being slidably guided on the mandrel bar above the polygonal ring.
the expansion body can have two circular truncated cone surfaces which merge into one another via a rounding, the base surfaces of which are directed towards one another.
the polygon ring can have a cylindrical shape parallel to the mandrel rod, the end on the expander body being provided with a contour transition bevel through which the polygon cross section merges into a diameter corresponding to the diameter of the pipe bend end.
the punch which is rotationally symmetrical with respect to the mandrel bar, can have an adaptation bevel at its lower end, via de Ren length a change in diameter from the diameter corresponding to the diameter of the pipe bend end to the diameter corresponding to the diameter of the solder gap.
the punch in its upper end region can be provided with a steady transition with a diameter enlargement in order to widen the free end of the tube that forms the tube tulip.
the heat exchanger shown partly in section in FIG. 1 has fins 2 penetrated by a tube 1 and a side part 3 likewise penetrated by the tube 1.
the end of the tube 1 is deformed into a tube tulip 4, so that the end of the tube 1 has three diameter ranges 5.5 ', 5 ".
a tube bend 7 is soldered into the tube tulip 4 with its end 6.
the soldering is carried out in the dip-soldering process
bulges 9 acting as ventilation channels are provided in the middle area 5 distributed around the circumference, as can be seen in particular in Figures 2 and 4.
the end 6 of the pipe bend 7 is only partially covered by the bulges 9 , so that the inside of the pipe has a connection to the outside when soldering and so the solder gap 8 is vented in both directions along the pipe bend 7.
the smallest diameter of the central region 5 'of the tubular tulip 4 corresponds to the outer diameter of the end 6 of the tubular elbow 7, a tight fit being sought by a small undersize, through which the tubular elbow 7 sits firmly in the tubular tulip 4 during assembly and protrudes does not allow the soldering process to be delayed by its own weight or by vibrations.
the largest diameter of the bulges 9 in the area 5 ′ is somewhat smaller than the tubular tulip diameter 5 ′′ in the area of the solder gap 8.
the bulge 9 gives the tubular tulip 4 a polygonal shape in the region 5 'and the narrowest points form clamping points 10.
FIGS. 5-7 A device for shaping the tubular tulip 4 is shown in FIGS. 5-7. It essentially consists of an elongated mandrel rod 11, at the lower end of which a widening body 13 which is rotationally symmetrical to the mandrel rod axis 12 is fixedly arranged.
the expanding body 13 has a spherical contour. Its largest diameter corresponds approximately to the widened diameter of the tube 6 in the region of the fins 2 and the side part 3.
the expander body 13 has a rounding 14 in the region of its largest diameter, via which the two frustoconical surfaces 15, 15 'directed towards one another with their base surfaces are continuously intermeshed pass over.
a polygon ring 16 is rotatably and axially displaceably guided on the mandrel rod 11. It has a cylindrical shape with a polygonal cross section, the polygonal cross section corresponding to the outer contour of the bulges 9, as shown in FIG. 2 with three bulges 9.
the lower end of the polygon ring 16 merges via a transition bevel 17 into a diameter corresponding to the inside of the tube in the region 5.
a rotationally symmetrical stamp 18 is provided on the mandrel rod 11, which has an adaptation bevel 19 at its lower end, over the length of which a diameter change corresponding to the diameter of the end 6 of the pipe bend 7 to the diameter corresponding to the clear width of the solder gap 11.
a diameter enlargement 20 can also be provided, through which the free end of the tubular tulip 4 can be provided to facilitate the insertion of the end 6 of the pipe bend 7.
the mandrel rod 11 with the expansion body 13 is pressed into the tube 1 with rotary motion and possibly with a lubricant, thus expanding the tube 1 so that the fins 2 and the side part 3 are seated on the tube 1 practically with a press fit.
the mandrel rod 11 still lowered, the polygon ring 16 is pressed into the end of the tube 1 together with the punch 18 for forming the tube tulip 4 and the bulges 9.
the punch 18 can be rotated to reduce the friction, while the polygon ring 16 is only inserted axially into the tube 1 and the area 5 ′ of the tube tulip 4 is thereby formed.
the stamp 18 itself then the area 5 'of the tubular tulip 4 is widened.
tubular elbows 7 can then be inserted and soldered in a known manner using the immersion soldering method.

Landscapes

Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Thermal Sciences (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Butt Welding And Welding Of Specific Article (AREA)

EP91103650A 1990-03-14 1991-03-09 Echangeur de chaleur Expired - Lifetime EP0446824B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4008063		1990-03-14
DE4008063A DE4008063A1 (de)	1990-03-14	1990-03-14	Waermetauscher

Publications (3)

Publication Number	Publication Date
EP0446824A2 true EP0446824A2 (fr)	1991-09-18
EP0446824A3 EP0446824A3 (en)	1992-05-27
EP0446824B1 EP0446824B1 (fr)	1994-10-12

Family

ID=6402132

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP91103650A Expired - Lifetime EP0446824B1 (fr)	1990-03-14	1991-03-09	Echangeur de chaleur

Country Status (3)

Country	Link
EP (1)	EP0446824B1 (fr)
DE (2)	DE4008063A1 (fr)
ES (1)	ES2061089T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2704029A1 (fr) *	1993-04-13	1994-10-21	Fichtel & Sachs Ag	Joint d'assemblage soudé entre un corps tubulaire et un fond.
WO2006102951A1 (fr) *	2005-03-31	2006-10-05	Frape Behr S.A.	Echangeur thermique, notamment condenseur pour systeme de climatisation

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4325427A1 (de) *	1993-07-29	1995-02-02	Behr Gmbh & Co	Wärmetauscher, insbesondere Kraftfahrzeugkühler
DE4445590C2 (de) *	1994-12-20	2001-02-01	Behr Gmbh & Co	Verfahren zum Aufweiten der Rohrenden von Rohren eines Wärmetauschers, Werkzeug zur Durchführung des Verfahrens sowie nach dem Verfahren und mit dem Werkzeug hergestellter Wärmetauscher
DE19750748C2 (de) *	1997-11-14	2003-04-24	Behr Gmbh & Co	Plattenwärmetauscher

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE397207C (de) *	1923-01-24	1924-06-28	Hermann Mumme	Verfahren zum Abdichten der Gewindeenden rohrfoermiger Stehbolzen oder Deckenanker
US3713481A (en) *	1971-09-03	1973-01-30	Houston Eng Inc	Well pipe swage
US3957289A (en) *	1974-08-19	1976-05-18	Aluminum Company Of America	Soldered joint and method
IT1068511B (it) *	1975-09-22	1985-03-21	Gen Electric	Sistema di giunzione di tubi
US4077559A (en) *	1976-09-27	1978-03-07	Carrier Corporation	Oval bell concept
FR2369033A1 (fr) *	1976-10-28	1978-05-26	Chausson Usines Sa	Proce
JPS57144895A (en) *	1981-03-04	1982-09-07	Hitachi Ltd	Fin and tube type of heat exchanger
DE3126030C2 (de) *	1981-07-02	1983-04-14	Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart	Rohrverbindung für einen Wärmetauscher mit einer Vielzahl einzelner miteinander zu verbindender Teile
DE3239950A1 (de) *	1982-10-28	1984-05-03	Thermal-Werke, Wärme-, Kälte-, Klimatechnik GmbH, 6909 Walldorf	Waermetauscher und verfahren zu seiner herstellung
GB8302419D0 (en) *	1983-01-28	1983-03-02	Btr Plc	Securing/sealing element
DE8411661U1 (de) *	1984-04-13	1988-11-03	Thermal-Werke, Wärme-, Kälte-, Klimatechnik GmbH, 6832 Hockenheim	Lamellen-waermetauscher
DD234624B1 (de) *	1985-02-15	1988-03-30	Karl Marx Stadt Tech Hochschul	Kombiniertes umformwerkzeug
JPH01144409A (ja) *	1987-09-18	1989-06-06	Pennwalt Corp	弗化ビニリデンとｎ−アルキルアクリルアミドとの親水性序列コポリマー及びその製造方法
DE3938388A1 (de) *	1989-11-18	1991-05-23	Behr Gmbh & Co	Verfahren zur herstellung u-foermiger rohrboegen fuer einen waermetauscher
FR2654815B1 (fr) *	1989-11-22	1992-02-07	Valeo Thermique Moteur Sa	Echangeur de chaleur a assemblage d'elements tubulaires emboites, notamment pour vehicules automobiles.

1990
- 1990-03-14 DE DE4008063A patent/DE4008063A1/de not_active Withdrawn
1991
- 1991-03-09 EP EP91103650A patent/EP0446824B1/fr not_active Expired - Lifetime
- 1991-03-09 ES ES91103650T patent/ES2061089T3/es not_active Expired - Lifetime
- 1991-03-09 DE DE59103193T patent/DE59103193D1/de not_active Expired - Fee Related

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2704029A1 (fr) *	1993-04-13	1994-10-21	Fichtel & Sachs Ag	Joint d'assemblage soudé entre un corps tubulaire et un fond.
ES2082708A2 (es) *	1993-04-13	1996-03-16	Fichtel & Sachs Ag	Union soldada entre un cuerpo tubular y un fondo
WO2006102951A1 (fr) *	2005-03-31	2006-10-05	Frape Behr S.A.	Echangeur thermique, notamment condenseur pour systeme de climatisation
EP1710529A1 (fr) *	2005-03-31	2006-10-11	Frape Behr S.A.	Echangeur de chaleur, en particulier condenseur pour climatisation
CN101156042B (zh) *	2005-03-31	2010-10-13	弗瑞普贝洱有限公司	热交换器，特别是用于汽车的冷凝器

Also Published As

Publication number	Publication date
DE59103193D1 (de)	1994-11-17
DE4008063A1 (de)	1991-09-19
EP0446824A3 (en)	1992-05-27
EP0446824B1 (fr)	1994-10-12
ES2061089T3 (es)	1994-12-01

Legal Events

Date	Code	Title	Description
1991-08-02	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1991-09-18	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): DE ES FR IT SE
1992-04-06	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1992-05-27	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): DE ES FR IT SE
1992-09-23	17P	Request for examination filed	Effective date: 19920724
1993-11-24	17Q	First examination report despatched	Effective date: 19931008
1994-07-08	ITF	It: translation for a ep patent filed
1994-08-26	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1994-10-12	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE ES FR IT SE
1994-11-17	REF	Corresponds to:	Ref document number: 59103193 Country of ref document: DE Date of ref document: 19941117
1994-12-01	REG	Reference to a national code	Ref country code: ES Ref legal event code: FG2A Ref document number: 2061089 Country of ref document: ES Kind code of ref document: T3
1994-12-30	ET	Fr: translation filed
1995-01-31	EAL	Se: european patent in force in sweden	Ref document number: 91103650.7
1995-08-12	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1995-08-12	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1995-10-04	26N	No opposition filed
1998-03-11	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 19980311 Year of fee payment: 8
1998-03-12	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: ES Payment date: 19980312 Year of fee payment: 8
1998-03-19	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19980319 Year of fee payment: 8
1998-03-25	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: SE Payment date: 19980325 Year of fee payment: 8
1999-03-10	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990310 Ref country code: ES Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 19990310
1999-11-01	EUG	Se: european patent has lapsed	Ref document number: 91103650.7
1999-11-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19991130
1999-12-06	EUG	Se: european patent has lapsed	Ref document number: 91103650.7
1999-12-31	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
2000-01-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000101
2001-07-01	REG	Reference to a national code	Ref country code: ES Ref legal event code: FD2A Effective date: 20010301
2005-03-09	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050309

Publication	Publication Date	Title
DE3026461C2 (de)	1984-12-06	Zweistufiges Verfahren zum Ausformen eines Endes mit kreisförmigen Querschnitt an einem metallischen Rohr für einen Wärmetauscher
DE2902155C2 (de)	1982-06-09	Kopfplatte für den Tank eines Röhrenerwärmetauschers und Verfahren zu deren Herstellung
EP0102491B1 (fr)	1988-04-13	Procédé pour joindre des pièces tubulaires emmanchées l'une dans l'autre et appareil pour exécuter ce procédé
DE3432073A1 (de)	1986-03-06	Waermetauscher, insbesondere fuer kraftfahrzeuge, und vorrichtung und verfahren zum verbinden von dessen rohren und lamellen
EP0193589B1 (fr)	1989-04-12	Appareil et procédé pour produire les douilles de serrage pour tuyaux
EP0925467B1 (fr)	2003-03-05	Douille de fixation pour flexible
DE3126030A1 (de)	1983-01-20	Rohrverbindung fuer einen waermetauscher mit einer vielzahl einzelner miteinander zu verbindender teile
DE2226070B2 (de)	1974-01-31	Kupplungshülse zum Verbinden von elektrischen Leitern und Verfahren zu deren Herstellung
EP0309699A2 (fr)	1989-04-05	Dispositif d'élargissement pour ebauches creuses
DE1900741C3 (de)	1975-07-03	Vorrichtung zur Formgebung konischer Metallrohre
DE3028096A1 (de)	1981-02-12	Anpassungsverfahren eines metallrohres insbesondere fuer waermetauscher u.dgl.
DE2851282C2 (fr)	1987-09-17
EP0446824B1 (fr)	1994-10-12	Echangeur de chaleur
DE2803365B2 (de)	1981-04-16	Verfahren und Vorrichtung zur Herstellung von schraubenförmig verlaufenden Querrippen an einem Rohr durch Walzen
DE2548853C3 (de)	1980-12-18	Vorrichtung zur Herstellung von metallenen Ringrohlingen
DE2320125C3 (de)	1980-03-06	Verfahren zur Herstellung einer Rohreinheit
DE2536852C2 (de)	1984-02-23	Vorrichtung zur Herstellung von Rohrbogen mit kleinem Krümmungsradius
DE4322902B4 (de)	2005-12-08	Vorrichtung zur Herstellung von Wellrohren
DE2154226C2 (de)	1982-12-16	Anordnung zur Herstellung von kreisbogenförmig gekrümmten Kokillen für Stranggußmaschinen
DE3009749C2 (de)	1984-11-08	Vorrichtung zum Aushalsen von Rohren
DE3207267C2 (de)	1984-08-23	Ziehdüse zum Herstellen von Mehrkanalrohren
DE3427369C2 (fr)	1990-08-30
DE620659C (de)	1935-10-24	Loetverbindung von ineinandergesteckten Metallrohren, insbesondere Fahrzeugrahmen
DE4325427A1 (de)	1995-02-02	Wärmetauscher, insbesondere Kraftfahrzeugkühler
DE7526225U (de)	1977-08-04	Rohrbogen