EP0495184A1 - Echangeur de chaleur à plaques à écoulement à contre-courant - Google Patents

Echangeur de chaleur à plaques à écoulement à contre-courant Download PDF

Info

Publication number: EP0495184A1
Authority: EP; European Patent Office
Prior art keywords: plate; plates; heat exchanger; individual plates; individual
Prior art date: 1991-01-15
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

EP91120116A

Other languages

German (de)

English (en)

Other versions

EP0495184B1 (fr

Inventor

Werner Deibl

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.)

Balcke Duerr AG

Original Assignee

Balcke Duerr AG

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.)

1991-01-15

Filing date

1991-11-26

Publication date

1992-07-22

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6423019&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0495184(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1991-11-26 Application filed by Balcke Duerr AG filed Critical Balcke Duerr AG

1992-07-22 Publication of EP0495184A1 publication Critical patent/EP0495184A1/fr

1994-12-14 Application granted granted Critical

1994-12-14 Publication of EP0495184B1 publication Critical patent/EP0495184B1/fr

2011-11-26 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
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
- F28F3/083—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning capable of being taken apart

Definitions

the invention relates to a plate heat exchanger for countercurrent media, consisting of molded single plates, which are connected together to form a flow channel for the plate pairs forming a medium, which in turn are connected to form a plate stack and each form a flow channel for the other medium, whereby the inflow and outflow cross-section of each channel is offset diagonally to one another in the longitudinal direction of the plate and the inflow and outflow cross-sections of the channels for the two media lie next to one another, but are offset by half the height of the inflow and outflow cross-section of the channels.
Such plate heat exchangers are known. They are used, for example, in environmental technology and can also be designed for large volume flows of the media involved in the heat exchange, whereby these media need not only be gaseous media, since there are cases in which the heat exchange between liquids or between a gas and a liquid should take place.
the individual plates are therefore made of plastic or stainless steel; Furthermore, versions made of normal steel sheet are known, but this is provided with a corrosion protection layer made of plastic or enamel. While single plates made of plastic or stainless steel can be welded together with a higher technical effort, this is not possible with single plates provided with a corrosion protection layer without destroying this protective layer in the area of the weld seams. In the known plate heat exchangers, another type of connection must be selected here, for example gluing or clamping, preferably with the interposition of seals.
the invention has for its object to develop a plate heat exchanger of the type described in such a way that a reliable and permanent seal both between the individual plates and between the plate pairs, taking into account the above-mentioned temperature stresses with little technical and manufacturing effort results, even if the individual plates are provided with a corrosion protection layer.
each individual plate is formed in connection with and parallel to its edges running in the longitudinal direction of the plate, at which it is connected to the adjacent individual plate to form a pair of plates, with a contact surface which is opposite the edge is offset by half the height of a pair of plates and at which the individual plates of adjacent plate pairs are connected to one another.
contact surfaces according to the invention By designing such contact surfaces according to the invention, it is also possible in series production in a simple manner to reliably and permanently connect both the individual plates to plate pairs and the plate pairs to form a plate stack, it also being possible to first connect in the area of the contact surfaces according to the invention and only then make the connection on the longitudinal edge of the individual panels. For both connections there are defined contact surfaces between the individual plates, so that a seal that is tailored to the respective application and to the plate material can always be selected.
the individual plates forming a plate stack are connected at their transverse edges lying in the area of the inflow and outflow of the two media over a partial length to the individual plate belonging to the plate pair and over the remaining partial length with the individual plate of the adjacent plate pair. In this way, two rows of inflow and outflow openings lying side by side result for the media guided in countercurrent.
the openings formed by the height-offset contact surfaces in the inflow and outflow region of the plate stack are closed according to a further feature of the invention, so that there is a technically simple supply and discharge of the media flowing through the plate heat exchanger on opposite sides of the plate stack.
the plate pairs and / or the individual plates are welded together and / or sealed together at their contact surfaces or edges according to the invention.
the gas or liquid-tight connection can therefore not only be achieved by welding or gluing, i.e. done positively, but also non-positively in that the individual plates of the plate stack are pressed against each other, preferably by using tie rods and end plates.
Both in the form-fitting connection, i.e. by welding or gluing, as well as in the non-positive connection of the individual plates it can be advantageous to provide suitable seals in the area of the edges and / or contact surfaces.
the same type of connection is preferably selected in the area of the transverse edges to be connected. However, it may also be sufficient to effect the connection of the individual plates in the region of their transverse edges due to the dimensional stability of the individual plates as a result of their connection at the longitudinal edges and contact surfaces solely by inserting seals.
the individual plates are made of plastic or stainless steel, it is proposed according to a further feature of the invention to connect the individual plates to one another at least on their longitudinal edges and contact surfaces by roll seam welding. If coated individual plates are used to form the plate stack, according to the invention these can be uncoated at the longitudinal edges and can therefore be welded to one another here. In both cases, it is possible to insert seals between the individual plates in addition to the welding.
the inflow and outflow cross section of the channels will be the same for the two media participating in the heat exchange, in particular if the volumes of the two media participating in the heat exchange approximately correspond to one another. In this case - given the same predetermined height of the inflow and outflow openings - the width of these openings formed by the transverse edges of the individual plates is the same.
the inflow and outflow cross sections of the two different channels through which the two media flow in countercurrent can also have a different size if the volume flows of the two media participating in the heat exchange differ greatly from one another. In this case, the inflow and outflow cross sections formed by the transverse edges of the individual plates have a different width at the same height.
FIGS. 1 and 2 shows schematically and in perspective the plate stack S of a plate heat exchanger, which is otherwise not shown, for media conducted in countercurrent.
This plate stack S consists of a plurality of identical, shaped individual plates 1, which are each connected to form a plate pair P.
Each individual plate 1 comprises a floor 11 which lies in a different plane from the longitudinal edges 12.
each individual plate 1 is each formed with a contact surface 13 which is offset in height from the longitudinal edges 12.
the offset between the contact surface 13 and the associated longitudinal edge 12 is twice as large as the offset between the longitudinal edges 12 and the bottom 11; the bottom 11 is accordingly in height in the middle between the plane of the longitudinal edges 12 and the plane of the contact surfaces 13.
edges extending transversely to the longitudinal edges 12 of the single plate 1 are approximately half in the embodiment of FIGS. 1 and 2 in the plane of the longitudinal edges 12 and in the plane of the contact surfaces 13.
transverse edges 14a and 14b which in height, ie perpendicular to the surface of the floor 11 are offset from one another by the same amount as the planes in which the longitudinal edges 12 on the one hand and the contact surfaces 13 on the other hand.
the transverse edges 14a and 14b lie diagonally opposite one another.
plate pairs P are formed according to the lower representation in FIG. 1 by connecting a single plate 1 to a single plate 1 rotated about its longitudinal axis by 180 ° at the longitudinal edges 12. 1 and 2, five complete plate pairs P1 to P5 are shown, with a single plate 1 being arranged on the uppermost plate pair P5 and another single plate 1 is located at a greater distance above this single plate 1 arranged on the plate pairs P.
the plate pairs P are now connected in the area of the contact surfaces 13 to form a plate stack S, there are alternately superimposed channels in which flow flows in the opposite direction for the two media participating in the heat exchange. While one medium flows in the channels which are formed by the plate pairs P, the other medium flows in the channels which result from the joining of the plate pairs P to the plate stack S.
the lying in the plane of the longitudinal edges 12 transverse edges 14a of the individual plates 1 here form the inlet openings E1 and the outlet openings A1 of the channels for the medium flowing between the plate pairs P.
the in the plane of the contact surfaces 13 transverse edges 14b of the individual plates 1 form the inlet openings E2 and the outlet openings A2 for the other medium which flows between the individual plates 1 of each pair of plates in the opposite direction.
the inlet openings E 1 for the first medium next to the outlet openings A 2 for the other medium each offset by half a height of a pair of plates P.
FIG. 2 The front view shown in Fig. 2 of the left part of the plate stack S shown in perspective in Fig. 1 shows that the plate pairs P1 to P5 can be produced in a simple manner in that the individual plates 1 are connected together at their longitudinal edges 12.
the connection of the plate pairs P created in this way to a plate stack S takes place in an equally simple manner in that adjacent individual plates 1 of the plate pairs P are connected to one another in the region of the abutting contact surfaces 13.
the transverse edges 14a and 14b of adjacent individual plates 1 are connected in accordance with FIG. 1.
lateral openings O result on each end face of the plate stack S, each of which is connected to the flow channel which is formed by the individual plates 1 for the one medium, which are connected to form a pair of plates P.
these openings O are closed in a suitable manner.
the individual plates 1 lie flat on one another both in the region of their longitudinal edges 12 and in the region of their contact surfaces 13.
the connection of the individual plates 1 can be done in a simple manner by welding, preferably roller seam welding.
Such a roll seam welding can be carried out not only in the case of individual plates 1 made of plastic or stainless steel, but also in the case of individual plates 1 provided with a corrosion protection layer, if these individual plates 1 are uncoated in the outer region of their longitudinal edges 12, so that they are welded to one another here without destroying the corrosion protection layer can be. In this case, however, it is necessary to connect the individual plate pairs P to a plate stack S in a different way.
the assembly of a plate stack S from individual plates 1 by welding can be simplified in that adjacent individual plates 1 are first welded together in the area of their contact surfaces 13 and only then in the area of their longitudinal edges 12.
at least one roller seam weld can be carried out in a particularly simple manner in the region of the contact surfaces 13 and longitudinal edges 12.
modified individual plates 1 are used. These are provided with groove-like depressions 15 both in the region of their longitudinal edges 12 and transverse edges 14a and 14b and in the region of their contact surfaces 13. These depressions 15 form cavities for receiving a sealing compound or seals 2.
Such seals 2 can be used not only in addition to welding the individual plates 1 on their contact surfaces, but also as an alternative to such welds if the individual plates 1 of a plate stack S are applied to others Be sealed together with their contact surfaces.
7 shows, using a schematic exemplary embodiment, that the plate stack S can also be formed in that the individual plates 1 are clamped between a base plate 3 and a cover plate 4 with the aid of tension cores 5. In this case, welding of the individual plates 1 to plate pairs P or welding of adjacent plate pairs P to one another can be dispensed with.
openings O resulting from the additional contact surfaces 13 in the end faces of the plate stack S can be closed in a simple manner.
plugs 6 are shown which are inserted into these openings O.
the openings O can also be closed in a different way, for example by welding or pressing.
the transverse edges 14a and 14b of the individual plates 1 are of approximately the same size, so that there are approximately the same size inlet and outlet openings for the two media flowing in countercurrent, it is of course also possible to use a different one Volume flow of the two media participating in the heat exchange to take into account by changing the ratio of the lengths of the transverse edges 14a and 14b to each other.
the distances between the planes in which the contact surfaces 13, the bottoms 11 and the longitudinal edges 12 lie must also be changed in accordance with the length ratio of the transverse edges 14a and 14b. In this case, however, it is necessary to use two differently shaped individual plates 1 to build up a plate stack S.

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)

EP91120116A 1991-01-15 1991-11-26 Echangeur de chaleur à plaques à écoulement à contre-courant Expired - Lifetime EP0495184B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4100940		1991-01-15
DE4100940A DE4100940C1 (fr)	1991-01-15	1991-01-15

Publications (2)

Publication Number	Publication Date
EP0495184A1 true EP0495184A1 (fr)	1992-07-22
EP0495184B1 EP0495184B1 (fr)	1994-12-14

Family

ID=6423019

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP91120116A Expired - Lifetime EP0495184B1 (fr)	1991-01-15	1991-11-26	Echangeur de chaleur à plaques à écoulement à contre-courant

Country Status (4)

Country	Link
EP (1)	EP0495184B1 (fr)
AT (1)	ATE115713T1 (fr)
DE (2)	DE4100940C1 (fr)
ES (1)	ES2067838T3 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE9115813U1 (de) *	1991-12-20	1992-02-20	Balcke-Dürr AG, 4030 Ratingen	Plattenwärmetauscher
DE4142177C2 (de) *	1991-12-20	1994-04-28	Balcke Duerr Ag	Plattenwärmetauscher
DE4239049C1 (de) *	1992-11-20	1993-10-14	Balcke Duerr Ag	Plattenwärmetauscher
US5469914A (en) *	1993-06-14	1995-11-28	Tranter, Inc.	All-welded plate heat exchanger
DE4340849C3 (de) *	1993-12-01	2000-09-14	Schilling Heinz Kg	Plattenwärmeaustauscher in Modulbauweise zum rekuperativen Wärmeaustausch im Gegenstromprinzip zwischen gasförmigen Medien
DE19510847C2 (de) *	1995-03-17	2002-11-21	Michael Rehberg	Plattenwärmetauscher
AT404877B (de) *	1997-05-30	1999-03-25	Wagner Wilfried	Gegenstrom-plattenwärmetauscher
EP2657635B1 (fr) *	2012-04-23	2015-06-10	GEA Ecoflex GmbH	Echangeur thermique à plaques
EP2657636B1 (fr) *	2012-04-23	2015-09-09	GEA Ecoflex GmbH	Echangeur thermique à plaques
EP3205969B1 (fr) *	2012-08-27	2021-07-21	Kelvion PHE GmbH	Système d'échangeur de chaleur à plaques, comprenant un échangeur de chaleur à plaques et une barre de protection contre l'érosion pour échangeur de chaleur à plaques

Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB217593A (en) *	1923-06-13	1924-10-30	Georges Marie Gerouille De Bea	Improvements in or relating to heat exchangers
DE1259362B (de) *	1959-06-29	1968-01-25	Joachim Beushausen	Waermetauscher mit plattenartigen Waermetauschwaenden aus leicht biegsamen Kunststoff-Folien
WO1983000736A1 (fr) *	1981-08-14	1983-03-03	Korobchansky, Ostap, Aleksandrovich	Echangeur de chaleur du type a plaque
DE3710823A1 (de) *	1987-04-01	1988-10-13	Bavaria Anlagenbau Gmbh	Verfahren zur herstellung geschweisster plattenwaermetauscher, insbesondere kreuzstrom-plattenwaermetauscher
FR2638226A1 (fr) *	1988-10-24	1990-04-27	Packinox Sa	Echangeur a plaques
DE3844213A1 (de) *	1988-12-29	1990-07-05	Gea Ahlborn Gmbh & Co	Waermeaustauscher

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4027940A1 (de) *	1990-09-04	1993-03-04	Balcke Duerr Ag	Plattenwaermetauscher

1991
- 1991-01-15 DE DE4100940A patent/DE4100940C1/de not_active Expired - Lifetime
- 1991-11-26 DE DE59103899T patent/DE59103899D1/de not_active Expired - Lifetime
- 1991-11-26 AT AT91120116T patent/ATE115713T1/de not_active IP Right Cessation
- 1991-11-26 ES ES91120116T patent/ES2067838T3/es not_active Expired - Lifetime
- 1991-11-26 EP EP91120116A patent/EP0495184B1/fr not_active Expired - Lifetime

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB217593A (en) *	1923-06-13	1924-10-30	Georges Marie Gerouille De Bea	Improvements in or relating to heat exchangers
DE1259362B (de) *	1959-06-29	1968-01-25	Joachim Beushausen	Waermetauscher mit plattenartigen Waermetauschwaenden aus leicht biegsamen Kunststoff-Folien
WO1983000736A1 (fr) *	1981-08-14	1983-03-03	Korobchansky, Ostap, Aleksandrovich	Echangeur de chaleur du type a plaque
DE3710823A1 (de) *	1987-04-01	1988-10-13	Bavaria Anlagenbau Gmbh	Verfahren zur herstellung geschweisster plattenwaermetauscher, insbesondere kreuzstrom-plattenwaermetauscher
FR2638226A1 (fr) *	1988-10-24	1990-04-27	Packinox Sa	Echangeur a plaques
DE3844213A1 (de) *	1988-12-29	1990-07-05	Gea Ahlborn Gmbh & Co	Waermeaustauscher

Also Published As

Publication number	Publication date
ES2067838T3 (es)	1995-04-01
EP0495184B1 (fr)	1994-12-14
DE59103899D1 (de)	1995-01-26
ATE115713T1 (de)	1994-12-15
DE4100940C1 (fr)	1991-11-21

Legal Events

Date	Code	Title	Description
1992-06-05	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
1992-07-22	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): AT BE CH DE ES FR GB IT LI NL SE
1992-08-05	17P	Request for examination filed	Effective date: 19920606
1993-05-26	17Q	First examination report despatched	Effective date: 19930408
1994-07-13	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: BDAG BALCKE-DUERR AKTIENGESELLSCHAFT
1994-10-28	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1994-12-14	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): AT BE CH DE ES FR GB IT LI NL SE
1994-12-14	REF	Corresponds to:	Ref document number: 115713 Country of ref document: AT Date of ref document: 19941215 Kind code of ref document: T
1995-01-26	REF	Corresponds to:	Ref document number: 59103899 Country of ref document: DE Date of ref document: 19950126
1995-02-08	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)	Effective date: 19950111
1995-02-10	ET	Fr: translation filed
1995-02-20	ITF	It: translation for a ep patent filed	Owner name: ING. ZINI MARANESI & C. S.R.L.
1995-04-01	REG	Reference to a national code	Ref country code: ES Ref legal event code: FG2A Ref document number: 2067838 Country of ref document: ES Kind code of ref document: T3
1995-09-20	PLBI	Opposition filed	Free format text: ORIGINAL CODE: 0009260
1995-11-08	26	Opposition filed	Opponent name: ALFA LAVAL THERMAL AB Effective date: 19950914 Opponent name: THERMOWAVE GESELLSCHAFT FUER WAERMETECHNIK MBH. Effective date: 19950914
1996-01-02	NLR1	Nl: opposition has been filed with the epo	Opponent name: ALFA LAVAL THERMAL AB Opponent name: THERMOWAVE GESELLSCHAFT FUER WAERMETECHNIK MBH.
1996-04-03	PLBF	Reply of patent proprietor to notice(s) of opposition	Free format text: ORIGINAL CODE: EPIDOS OBSO
1996-04-27	PLBF	Reply of patent proprietor to notice(s) of opposition	Free format text: ORIGINAL CODE: EPIDOS OBSO
1996-05-30	PLBF	Reply of patent proprietor to notice(s) of opposition	Free format text: ORIGINAL CODE: EPIDOS OBSO
1996-12-12	PLBO	Opposition rejected	Free format text: ORIGINAL CODE: EPIDOS REJO
1997-03-27	PLBN	Opposition rejected	Free format text: ORIGINAL CODE: 0009273
1997-03-27	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: OPPOSITION REJECTED
1997-05-14	27O	Opposition rejected	Effective date: 19961226
1997-07-01	NLR2	Nl: decision of opposition
1998-11-19	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: SE Payment date: 19981119 Year of fee payment: 8
1998-11-24	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: ES Payment date: 19981124 Year of fee payment: 8
1999-11-27	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: 19991127 Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19991127
2000-07-17	EUG	Se: european patent has lapsed	Ref document number: 91120116.8
2000-10-13	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 20001013 Year of fee payment: 10
2000-10-16	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: CH Payment date: 20001016 Year of fee payment: 10
2000-10-23	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: AT Payment date: 20001023 Year of fee payment: 10
2000-10-26	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: NL Payment date: 20001026 Year of fee payment: 10
2000-11-01	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 20001101 Year of fee payment: 10
2000-11-16	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: BE Payment date: 20001116 Year of fee payment: 10
2001-11-26	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011126 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011126
2001-11-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011130 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011130 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011130
2002-01-01	REG	Reference to a national code	Ref country code: GB Ref legal event code: IF02
2002-05-31	BERE	Be: lapsed	Owner name: BALCKE-DURR A.G. BDAG Effective date: 20011130
2002-06-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020601
2002-07-15	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
2002-07-17	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20011126
2002-07-30	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: 20020730
2002-08-01	NLV4	Nl: lapsed or anulled due to non-payment of the annual fee	Effective date: 20020601
2002-08-30	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
2002-09-06	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
2004-04-01	REG	Reference to a national code	Ref country code: ES Ref legal event code: FD2A Effective date: 20001214
2005-11-26	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: 20051126
2008-08-01	PLAB	Opposition data, opponent's data or that of the opponent's representative modified	Free format text: ORIGINAL CODE: 0009299OPPO
2011-02-28	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 20100921 Year of fee payment: 20
2011-11-26	REG	Reference to a national code	Ref country code: DE Ref legal event code: R071 Ref document number: 59103899 Country of ref document: DE
2011-11-27	REG	Reference to a national code	Ref country code: DE Ref legal event code: R071 Ref document number: 59103899 Country of ref document: DE
2013-06-28	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 EXPIRATION OF PROTECTION Effective date: 20111127

Publication	Publication Date	Title
DE69315281T2 (de)	1998-03-12	Plattenwärmetauscher und Verfahren zu dessen Herstellung
DE3622316C1 (de)	1988-01-28	Plattenwaermeaustauscher
EP0578933B1 (fr)	1995-12-06	Echangeur de chaleur à plaques soudées
DE69113039T2 (de)	1996-04-18	Wärmetauscher mit mehrschichtigen Plattenelementen.
DE19543149C2 (de)	2000-09-14	Wärmetauscher, insbesondere Kältemittelverdampfer
EP1518084A1 (fr)	2005-03-30	Echangeur thermique a plaques empilees
DE19515526C1 (de)	1996-05-23	Flachrohrwärmetauscher mit mindestens zwei Fluten für Kraftfahrzeuge
EP0495184B1 (fr)	1994-12-14	Echangeur de chaleur à plaques à écoulement à contre-courant
DE69309921T2 (de)	1997-10-23	Wärmetauscher mit geschweissten platten
DE19709601A1 (de)	1998-09-10	Plattenwärmeübertrager
DE4343399C2 (de)	1995-12-14	Plattenwärmetauscher
EP3957940A1 (fr)	2022-02-23	Module d'échangeur de chaleur à plaque à contre-courant et échangeur de chaleur à plaque à contre-courant
DE10034343C2 (de)	2003-04-24	Plattenwärmetauscher
EP0844454A1 (fr)	1998-05-27	Echangeur de chaleur à contre courant
DE1809545A1 (de)	1969-08-21	Plattenwaermetauscher
AT404877B (de)	1999-03-25	Gegenstrom-plattenwärmetauscher
DE1601151A1 (de)	1970-06-18	Plattenwaermetauscher
DE3422684C2 (de)	1986-07-24	Hohlplattenheizkörper
DE3701362C2 (fr)	1993-03-11
DE4031355A1 (de)	1992-04-09	Plattenwaermetauscher
DE4433659C1 (de)	1995-12-07	Plattenwärmetauscher
DE2525921A1 (de)	1976-12-23	Waermeaustauscher
EP0167993A2 (fr)	1986-01-15	Echangeur de chaleur construit à partir de plaques
EP0853224A1 (fr)	1998-07-15	Echangeur de chaleur
DE2912723C2 (de)	1983-10-20	Wärmetauscher bestehend aus einer Reihe von Strömungskanälen in Form einer Platte