EP0610823B1 - Heat exchanger, especially for laundry dryer - Google Patents
Heat exchanger, especially for laundry dryer Download PDFInfo
- Publication number
- EP0610823B1 EP0610823B1 EP94101706A EP94101706A EP0610823B1 EP 0610823 B1 EP0610823 B1 EP 0610823B1 EP 94101706 A EP94101706 A EP 94101706A EP 94101706 A EP94101706 A EP 94101706A EP 0610823 B1 EP0610823 B1 EP 0610823B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- profile plates
- dowels
- holding frames
- exchanger according
- Prior art date
- 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.)
- Expired - Lifetime
Links
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
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
- F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
- F28F9/08—Arrangements for sealing elements into header boxes or end plates by dismountable joints by wedge-type connections, e.g. taper ferrule
Definitions
- the invention relates to a heat exchanger with hollow profile plates arranged at a distance from one another, the ends of which are inserted into slots of two holding frames and fixed therein, in particular for tumble dryers.
- a heat exchanger of this type is known from DE 85 30 313 U1 and EP 0 223 995 A2.
- the moisture-containing process air of the tumble dryer passes through the spaces formed between the profile plates. Cool air is blown through the hollow profile plates.
- the surfaces of the profile plates form condensation surfaces on which the moisture contained in the process air condenses.
- the profile plates are glued into the slots of the holding frame or held therein by caulking.
- the profile plates can also be connected to the holding frame by means of hollow rivets. Screw connections have also been used, as shown in EP 0 067 699 A1.
- the holding frames are fixed by means of dowels to the profile plates, the dowels with their spreading elements being introduced from the outside through the holding frames (30) into the hollow profile plates and by means of expanding pins driven into their dowel bore against the inner walls of the Profile plates are clamped.
- the holding frames can be quickly and easily attached to the profile plates with the dowels. Due to the driven expansion pins, the expansion elements are clamped so tightly to the inner walls of the hollow profile sections that a high peel strength is achieved, which is also the case with great heat exposure does not deteriorate.
- An embodiment is sufficient, which is characterized in that four dowels are provided per holding frame, which are arranged in the end regions of the first and the last slot of the holding frame. The assembly of the heat exchanger can be easily automated with this type of connection.
- connection between the dowels and the holding frame can be improved in that the dowels are separated from the holding frame and are supported by a collar or the like on the outer sides of the holding frame, or in that the dowels are integrally formed on the holding frame.
- the slots of the holding frame are provided with flanges on the outside, which serve as stops for the profile plates, then the insertion movement of the profile plates into the slots of the holding frame is limited in a defined manner.
- a further embodiment provides that the inside of the holding frames are provided with an elastic covering which seals the inserted ends of the profile plates on the outside, whereby the sealing can be improved thereby that the holding frame on the inside between the slots carry molded webs, which are also provided with elastic coverings.
- the webs also increase the stability of the holding frame.
- the production of the holding frame with the elastic covering is preferably carried out in plastic two-component injection molding, so that the Holding frame and the elastic covering form a compact, non-detachable unit.
- the profile plates are divided into chambers by webs, so that the dowels with the cross section can be matched to the cross section of a chamber in order to further increase the peel strength.
- the dowel holes are designed to be conically tapered.
- FIG. 1 shows a clothes dryer 10 in a perspective front view. Access to the drum is covered by a door 11. A removable heat exchanger 20 is installed below the drum. The control panel 12 with switches, display elements and the like is arranged above the door 11 in the front of the clothes dryer 10. Of the built-in heat exchanger 20 is shown enlarged in Fig. 2. It consists of several hollow profile plates 21, which can also be divided into several chambers by means of webs. The profile plates 21 are arranged parallel to each other, so that there is a gap between adjacent profile plates 21. The profile plates 21 are held between two holding frames 30. Slots 31 are made in this holding frame 30 which correspond in cross section to the outer cross section of the profile plates 21.
- the profile plates 21 are inserted into the slots 31 and preferably abut a flange 35 (FIG. 3) which closes the slot 31 all around in the region of the outside of the holding frame 30. In this way, only the cavities of the profile plates 21 are accessible via the holding frame 30. As the arrows 33 indicate, cooling air can be passed through the hollow profile plates 21, while the moisture-laden process air passes the gaps between the profile plates 21, as the arrows 34 show.
- the holding frames 30 are connected to the profile plates 21 with dowels 40, four dowels 40 in the end regions of the first and the last slot 31 of the holding frames 30 being sufficient.
- the dowels 40 can be integrally formed on the holding frame 30.
- the expansion elements 42 and 43 of a dowel 40 which are preferably provided with a conical dowel hole 41, are inserted into a chamber of the hollow profile plate 21, which is divided by a web 22. If an expansion pin 45 is driven into the conical dowel bore 41, then the expansion elements 42 and 43 expand and tighten on the inner wall of the chamber.
- the holding frame 30 is thus fixed connected to the associated profile plate 21.
- the remaining profile plates 21 are supported in the region of their slots 31 on the flange 35.
- the heat exchanger 20, together with the profile plates 21 and the two attached holding frames 30, forms a compact unit with high pull-out strength.
- the profile plates 21 are preferably cut to length from an extruded aluminum profile and the holding frames 30 are produced as plastic injection molded parts.
- expansion elements 42 and 43 of the dowels 40 are matched in cross section to the cross section of a chamber of the profile plate 21, then a particularly high pull-out strength is achieved.
- the dowels 40 can also be designed as parts separate from the holding frame 30. Then the dowels 40 are supported with a collar or the like on the outside of the holding frame 30 in order to obtain a sufficiently high pull-out strength.
- a further development provides that the inner sides, ie the sides facing the profile plates 21, of the holding frame 30 are provided with an elastic covering.
- This elastic covering seals the ends of the profile plates 21 on the outside, so that the cooling air can only get into the hollow profile plates 21 from the outside of the holding frame 30.
- the holding frame 30 can carry additional webs, which are also provided with an elastic covering. This can improve the sealing of the ends of the profile plates 21 and at the same time the stability of the holding frame 30 is increased.
- the holding frame 30 is made with the elastic covering in the plastic two-component injection molding process, so that a compact, non-detachable unit is formed.
- the holding frames 30 can also be connected to the profile plates 21, which are distributed over the holding frames 30, by means of more than four dowels 40.
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)
Description
Die Erfindung betrifft einen Wärmetauscher mit im Abstand zueinander angeordneten, hohlen Profilplatten, welche mit ihren Enden in Schlitze von zwei Halterahmen eingeführt und darin festgelegt sind, insbesondere für Wäschetrockner.The invention relates to a heat exchanger with hollow profile plates arranged at a distance from one another, the ends of which are inserted into slots of two holding frames and fixed therein, in particular for tumble dryers.
Ein Wärmetauscher dieser Art ist durch die DE 85 30 313 U1 und die EP 0 223 995 A2 bekannt. Bei diesem Wärmetauscher gelangt die feuchtigkeitshaltige Prozeßluft des Wäschetrockners durch die zwischen den Profilplatten gebildeten Zwischenräume. Durch die hohlen Profilplatten wird Kühlluft geblasen. Die Oberflächen der Profilplatten bilden Kondensationsflächen, an denen sich die in der Prozeßluft enthaltene Feuchtigkeit niederschlägt.A heat exchanger of this type is known from DE 85 30 313 U1 and EP 0 223 995 A2. In this heat exchanger, the moisture-containing process air of the tumble dryer passes through the spaces formed between the profile plates. Cool air is blown through the hollow profile plates. The surfaces of the profile plates form condensation surfaces on which the moisture contained in the process air condenses.
Bei diesen bekannten Wärmetauschern sind die Profilplatten in die Schlitze der Halterahmen eingeklebt oder durch Verstemmung darin gehalten.In these known heat exchangers, the profile plates are glued into the slots of the holding frame or held therein by caulking.
Wie die DE 83 23 074 zeigt, können die Profilplatten auch durch Hohlniete mit den Halterahmen verbunden werden. Auch Schraubverbindungen sind schon verwendet worden, wie die EP 0 067 699 A1 zeigt.As DE 83 23 074 shows, the profile plates can also be connected to the holding frame by means of hollow rivets. Screw connections have also been used, as shown in EP 0 067 699 A1.
Alle diese bekannten Wärmetauscher bedingen einen erheblichen Montageaufwand. Bei einer Klebeverbindung ist zudem nur bei sorgfältiger und massiver Klebematerialauftragung eine hohe Abziehfestigkeit zwischen Halterahmen und Profilplatten zu erreichen. Eine Klebeverbindung ist auch vom Standpunkt des Recyclings abzulehnen. Ein Verstemmen, Vernieten und Verschrauben der Profilplatten erhöht den Montageaufwand noch mehr. Beim Einkleben und Verstemmen wird keine hohe Wärmebeständigkeit erreicht.All of these known heat exchangers require considerable installation effort. With an adhesive connection, a high peel strength between the holding frame and profile plates can only be achieved with careful and massive application of adhesive material. An adhesive bond should also be rejected from the recycling point of view. Caulking, riveting and screwing the profile plates increases the assembly effort even more. No high heat resistance is achieved when gluing and caulking.
Es ist Aufgabe der Erfindung, bei einem Wärmetauscher der eingangs erwähnten Art mit geringem Montageaufwand die Profilplatten so mit den Halterahmen zu verbinden, daß eine hohe Abziehfestigkeit und eine Wärmebeständigkeit erreicht werden.It is an object of the invention to connect the profile plates to the holding frame in a heat exchanger of the type mentioned at the outset with little assembly effort in such a way that high peel strength and heat resistance are achieved.
Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß die Halterahmen mittels Dübel an den Profilplatten festgelegt sind, wobei die Dübel mit ihren Spreizelementen von außen durch die Halterahmen (30) in die hohlen Profilplatten eingeführt und mittels in ihre Dübelbohrung eingetriebener Spreizstifte gegen die Innenwandungen der Profilplatten verspannt sind.This object is achieved according to the invention in that the holding frames are fixed by means of dowels to the profile plates, the dowels with their spreading elements being introduced from the outside through the holding frames (30) into the hollow profile plates and by means of expanding pins driven into their dowel bore against the inner walls of the Profile plates are clamped.
Die Halterahmen lassen sich mit den Dübeln schnell und einfach an den Profilplatten festiegen. Durch die eingetriebenen Spreizstifte werden die Spreizelemente so fest mit den Innenwandungen der hohlen Profilabschnitte verspannt, daß eine hohe Abziehfestigkeit erreicht wird, die sich auch bei großer Wärmeeinwirkung nicht verschlechtert. Dabei genügt eine Ausgestaltung, die dadurch gekennzeichnet ist, daß pro Halterahmen vier Dübel vorgesehen sind, die in den Endbereichen des ersten und des letzten Schlitzes der Halterahmen angeordnet sind. Die Montage des Wärmetauschers läßt sich bei dieser Verbindungsart leicht automatisieren.The holding frames can be quickly and easily attached to the profile plates with the dowels. Due to the driven expansion pins, the expansion elements are clamped so tightly to the inner walls of the hollow profile sections that a high peel strength is achieved, which is also the case with great heat exposure does not deteriorate. An embodiment is sufficient, which is characterized in that four dowels are provided per holding frame, which are arranged in the end regions of the first and the last slot of the holding frame. The assembly of the heat exchanger can be easily automated with this type of connection.
Die Verbindung zwischen den Dübeln und den Halterahmen kann dabei dadurch verbessert werden, daß die Dübel von den Halterahmen getrennt sind und sich mit einem Bund oder dgl. an den Außenseiten der Halterahmen abstützen, oder daß die Dübel an den Halterahmen einstückig angeformt sind.The connection between the dowels and the holding frame can be improved in that the dowels are separated from the holding frame and are supported by a collar or the like on the outer sides of the holding frame, or in that the dowels are integrally formed on the holding frame.
Ist nach einer Ausgestaltung vorgesehen, daß die Schlitze der Halterahmen im Bereich der Außenseite mit Flanschen versehen sind, die als Anschläge für die Profilplatten dienen, dann wird die Einsteckbewegung der Profilplatten in die Schlitze der Halterahmen definiert begrenzt.If it is provided according to one embodiment that the slots of the holding frame are provided with flanges on the outside, which serve as stops for the profile plates, then the insertion movement of the profile plates into the slots of the holding frame is limited in a defined manner.
Damit die über die Schlitze eingeblasene Kühlluft eindeutig in die hohlen Profilplatten eingeleitet wird, sieht eine weitere Ausgestaltung vor, daß die Innenseiten der Halterahmen mit einem elastischen Belag versehen sind, welcher die eingeführten Enden der Profilplatten außen abdichtet, wobei die Abdichtung dadurch noch verbessert werden kann, daß die Halterahmen auf der Innenseite zwischen den Schlitzen angeformte Stege tragen, welche ebenfalls mit elastischen Belägen versehen sind. Die Stege erhöhen zudem die Stabilität der Halterahmen.In order that the cooling air blown in through the slots is uniquely introduced into the hollow profile plates, a further embodiment provides that the inside of the holding frames are provided with an elastic covering which seals the inserted ends of the profile plates on the outside, whereby the sealing can be improved thereby that the holding frame on the inside between the slots carry molded webs, which are also provided with elastic coverings. The webs also increase the stability of the holding frame.
Die Herstellung der Halterahmen mit dem elastischen Belag erfolgt vorzugsweise im Kunststoff-Zweikomponenten-Spritzgießverfahren, so daß der Halterahmen und der elastische Belag eine kompakte, unlösbare Einheit bilden.The production of the holding frame with the elastic covering is preferably carried out in plastic two-component injection molding, so that the Holding frame and the elastic covering form a compact, non-detachable unit.
Die Profilplatten sind nach einer bevorzugten Ausgestaltung durch Stege in Kammern unterteilt, so daß die Dübel mit dem Querschnitt auf den Querschnitt einer Kammer abgestimmt werden können, um die Abziehfestigkeit weiter zu erhöhen.According to a preferred embodiment, the profile plates are divided into chambers by webs, so that the dowels with the cross section can be matched to the cross section of a chamber in order to further increase the peel strength.
Um für die Verspannung der Spreizelemente eine ausreichende Anlenkung zu erhalten, ist nach einer Ausgestaltung vorgesehen, daß die Dübelbohrungen konisch verjüngend ausgebildet sind.In order to obtain sufficient articulation for the bracing of the expansion elements, it is provided according to one embodiment that the dowel holes are designed to be conically tapered.
Die Erfindung wird anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels näher erläutert. Es zeigt:
- Fig. 1
- in schematischer Perspektive einen Wäschetrockner mit eingebautem Wärmetauscher,
- Fig. 2
- in Perspektive den Wärmetauscher mit parallel zueinander angeordneten Profilplatten, welche zwischen zwei Halterahmen gehalten sind, und
- Fig. 3
- in einem Teilschnitt eine Dübelverbindung zwischen einem Halterahmen und einer Profilplatte.
- Fig. 1
- in a schematic perspective a clothes dryer with built-in heat exchanger,
- Fig. 2
- in perspective the heat exchanger with mutually parallel profile plates, which are held between two holding frames, and
- Fig. 3
- in a partial section a dowel connection between a holding frame and a profile plate.
Die Fig. 1 zeigt einen Wäschetrockner 10 in perspektivischer Vorderansicht. Der Zugang zur Trommel ist durch eine Tür 11 abgedeckt. Unterhalb der Trommel ist ein herausnehmbarer Wärmetauscher 20 eingebaut. Über der Tür 11 ist in der Vorderseite des Wäschetrockners 10 das Bedienfeld 12 mit Schaltern, Anzeigeelementen und dgl. angeordnet. Der eingebaute Wärmetauscher 20 ist in Fig. 2 vergrößert dargestellt. Er besteht aus mehreren hohlen Profilplatten 21, die auch durch Stege in mehrere Kammern unterteilt sein können. Die Profilplatten 21 sind parallel zueinander angeordnet, so daß zwischen benachbarten Profilplatten 21 jeweils ein Zwischenraum entsteht. Gehalten sind die Profilplatten 21 zwischen zwei Halterahmen 30. In diesen Halterahmen 30 sind Schlitze 31 eingebracht die im Querschnitt dem Außenquerschnitt der Profilplatten 21 entsprechen. Die Profilplatten 21 sind in die Schlitze 31 eingesteckt und stoßen vorzugsweise an einem Flansch 35 (Fig. 3) an, der im Bereich der Außenseite des Halterahmens 30 den Schlitz 31 umlaufend abschließt. Auf diese Weise sind lediglich die Hohlräume der Profilplatten 21 über die Halterahmen 30 zugänglich. Wie die Pfeile 33 andeuten, kann Kühlluft durch die hohlen Profilplatten 21 geleitet werden, während die feuchtigkeitsbeladene Prozeßluft die Zwischenräume zwischen den Profilplatten 21 passiert, wie die Pfeile 34 zeigen.1 shows a
Die Halterahmen 30 sind mit Dübeln 40 mit den Profilplatten 21 verbunden, wobei vier Dübel 40 in den Endbereichen des ersten und des letzten Schlitzes 31 der Halterahmen 30 ausreichend sind.The
Wie der Teilschnitt nach Fig. 3 zeigt, können die Dübel 40 einstückig an den Halterahmen 30 angeformt sein. Die mit einer vorzugsweise konischen Dübelbohrung 41 versehenen Spreizelemente 42 und 43 eines Dübels 40 werden in eine Kammer der hohlen Profilplatte 21 eingeführt, die durch einen Steg 22 abgeteilt ist. Wird in die konische Dübelbohrung 41 ein Spreizstift 45 eingetrieben, dann spreizen sich die Spreizelemente 42 und 43 und verspannen sich an der Innenwandung der Kammer. Der Halterahmen 30 ist damit fest mit der zugeordneten Profilplatte 21 verbunden. Die übrigen Profilplatten 21 stützen sich im Bereich ihrer Schlitze 31 an dem Flansch 35 ab. Der Wärmetauscher 20 bildet mit den Profilplatten 21 und den beiden angedübelten Halterahmen 30 eine kompakte Einheit mit hoher Ausziehfestigkeit. Durch Ausschlagen der Spreizstifte 45 kann der Wärmetauscher 20 leicht demontiert werden, was für Wartung, Reparatur und Recycling sehr von Vorteil ist. Die Profilplatten 21 sind vorzugsweise aus einem Aluminium-Strangpreßprofil abgelängt und die Halterahmen 30 sind als Kunststoff-Spritzgußteile hergestellt.As the partial section according to FIG. 3 shows, the
Sind die Spreizelemente 42 und 43 der Dübel 40 im Querschnitt auf den Querschnitt einer Kammer der Profilplatte 21 abgestimmt, dann wird eine besonders große Ausziehfestigkeit erreicht.If the
Die Dübel 40 können auch als von den Halterahmen 30 getrennte Teile ausgebildet sein. Dann stützen sich die Dübel 40 mit einem Bund oder dgl. auf der Außenseite der Halterahmen 30 ab, um eine ausreichend hohe Ausziehfestigkeit zu erhalten.The
Eine Weiterbildung sieht vor, daß die Innenseiten, d.h. die den Profilplatten 21 zugekehrten Seiten, der Halterahmen 30 mit einem elastischen Belag versehen sind. Dieser elastische Belag dichtet die Enden der Profilplatten 21 außen ab, so daß von der Außenseite des Halterahmens 30 aus die Kühlluft nur in die hohlen Profilplatten 21 gelangen kann. Zwischen den Schlitzen 31 können die Halterahmen 30 zusätzliche Stege tragen, die ebenfalls mit elastischem Belag versehen sind. Damit läßt sich die Abdichtung der Enden der Profilplatten 21 verbessern und gleichzeitig wird die Stabilität der Halterahmen 30 erhöht.A further development provides that the inner sides, ie the sides facing the
Der Halterahmen 30 wird mit dem elastischen Belag im Kunststoff-Zweikomponenten-Spritzgießverfahren hergestellt, so daß eine kompakte, unlösbare Einheit entsteht.The holding
Bei großen Wärmetauschern 20 können die Halterahmen 30 auch über mehr als vier Dübel 40 mit den Profilplatten 21 verbunden werden, die über die Halterahmen 30 verteilt sind.In the case of
Claims (9)
- A heat exchanger with hollow profile plates arranged spaced apart from each other, which are introduced by their ends into slits of two holding frames and are secured therein, in particular for laundry driers,
characterised in that
the holding frames (30) are secured by means of dowels (40) on the profile plates (21), in which the dowels (40) are introduced with their straddling elements (42, 43) from the exterior through the holding frames (30) into the hollow profile plates (21) and are braced against the inner walls of the profile plates (21) by means of straddling pins (45) driven into their dowel bore (41). - A heat exchanger according to Claim 1,
characterised in that
the dowels (40) are separate from the holding frame (30) and rest with a collar or the like against the outer sides of the holding frames (30). - A heat exchanger according to Claim 1,
characterised in that
the dowels (40) are formed in one piece on the holding frames (30). - A heat exchanger according to one of Claims 1 to 3,
characterised in that
for each holding frame (30) four dowels (40) are provided, which are arranged in the end regions of the first and last slit (31) of the holding frames (30). - A heat exchanger according to one of Claims 1 to 4,
characterised in that
the slits (31) of the holding frames (30) are provided in the region of the outer side with flanges (35), which serve as stops for the profile plates (21). - A heat exchanger according to one of Claims 1 to 5,
characterised in that
the inner sides of the holding frames (30) are provided with an elastic covering which seals externally the introduced ends of the profile plates (21). - A heat exchanger according to one of Claims 1 to 6,
characterised in that
the holding frames (30) carry cross-pieces formed on the inner side between the slits (31), which cross-pieces are likewise provided with elastic coverings. - A heat exchanger according to one of Claims 1 to 7,
characterised in that
the profile plates (21) are divided into chambers by cross-pieces (22) and in that the dowels (40) are matched in cross-section to the cross-section of a chamber of the profile plates (21). - A heat exchanger according to one of Claims 1 to 8,
characterised in that
the dowel bores are constructed so as to narrow conically.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4304072A DE4304072C2 (en) | 1993-02-11 | 1993-02-11 | Heat exchangers, in particular for tumble dryers |
| DE4304072 | 1993-02-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0610823A1 EP0610823A1 (en) | 1994-08-17 |
| EP0610823B1 true EP0610823B1 (en) | 1996-12-11 |
Family
ID=6480208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94101706A Expired - Lifetime EP0610823B1 (en) | 1993-02-11 | 1994-02-04 | Heat exchanger, especially for laundry dryer |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0610823B1 (en) |
| DE (2) | DE4304072C2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019007409B4 (en) * | 2019-10-24 | 2022-06-23 | Dräger Safety AG & Co. KGaA | Cooling element system for use within a cooling device of a closed-circuit breathing apparatus |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2966373A (en) * | 1959-02-02 | 1960-12-27 | Ici Ltd | Tubular inserts |
| FR2273222B1 (en) * | 1974-05-30 | 1977-10-07 | Chausson Usines Sa | |
| US3989282A (en) * | 1975-08-11 | 1976-11-02 | Reed Irrigation Systems | Plug-type device for interconnecting conduits |
| FR2341095A1 (en) * | 1976-02-10 | 1977-09-09 | Hamon | Clamping sleeve for tube in plate bore - has end flanges for trapping flexible sleeve at both ends |
| GB2020005B (en) * | 1978-03-23 | 1982-06-09 | Tilley J C | Solar heating system |
| GB2079883B (en) * | 1980-07-10 | 1984-04-18 | Secr Defence | Method of providing pressure tapping holes |
| SU1231377A1 (en) * | 1984-11-20 | 1986-05-15 | Челябинское Ремонтно-Монтажное Специализированное Управление Треста "Союзцветметгазоочистка" | Unit for joining flat tubes in heat exchanger |
| FR2644569B1 (en) * | 1989-03-16 | 1991-05-24 | Valeo Thermique Moteur Sa | HEAT EXCHANGER, PARTICULARLY FOR MOTOR VEHICLES, AND METHOD FOR ASSEMBLING SAME |
| DE4032904A1 (en) * | 1990-10-17 | 1992-04-23 | Zanker Gmbh | LAUNDRY DRYER |
-
1993
- 1993-02-11 DE DE4304072A patent/DE4304072C2/en not_active Expired - Fee Related
-
1994
- 1994-02-04 DE DE59401220T patent/DE59401220D1/en not_active Expired - Fee Related
- 1994-02-04 EP EP94101706A patent/EP0610823B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0610823A1 (en) | 1994-08-17 |
| DE59401220D1 (en) | 1997-01-23 |
| DE4304072C2 (en) | 1995-05-11 |
| DE4304072A1 (en) | 1994-08-18 |
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