EP2154465B1 - Plate heat exchanger - Google Patents

Description

The invention relates to a plate heat exchanger according to the preamble of claim 1.

The EP 0 604 193 B1 describes an oil cooler without housing, which is designed as a plate heat exchanger. The plate heat exchanger has a number of trough-like plates arranged parallel to one another, between which flow spaces for two different media are alternately spanned. The plate heat exchanger is closed by an end plate and a connecting element with side ports upwards.

Next is from the DE 10 2005 050 738 A1 a plate-type heat exchanger with connecting pieces known which are used in openings of the end plate. The insertion is usually done by pressing, riveting, spot welding or similar intermediate step. As a result, such a fixed connection piece is permanently soldered to the cover plate.

The DE 10 2008 029 110 A1 describes a heat exchanger with a heat exchanger jacket and disposed within the heat exchanger jacket plate packs, the plate pack has at least one tubular connection nozzle, which is performed by a passage in the heat exchanger jacket. In this case, a connection element is provided with an annular base body which can be screwed or inserted into the shell, wherein the pipe socket is spaced from the main body with a Ringpaft. Furthermore, a Tüllenelement is arranged on an outer side of the base body, which has a Tüllenwandung which is formed in cross-section approximately S-förrnlg and extending away from the shell. The spout is located in the region of a free circumferential edge closely adjacent to the pipe socket or is located on this and is attached with a weld on the neck.

The DE 197 27 145 A1 describes a housing-less plate heat exchanger having a plurality of deformed, nested and a package forming heat exchanger plates having separate flow channels for heat exchanging media, wherein in the region of a protruding portion of a connecting element radially emerging ports for the supply and discharge of at least one medium is arranged.

From the DE 103 44 733 A1 a plate heat exchanger with a stack of heat exchanger plates is known, which has a stack upwards shooting cover plate which communicates with an inlet and outlet channel and which has a Eintrittsquerschnftt and a Austrittsquerschnltt and serves to connect an inlet and outlet line.

From the DE 198 02 012 A1 a shellless plate heat exchanger is known, which has stacked heat exchanger plates, wherein the stack of heat exchanger plates is limited by a base plate and an end plate. Base plate and end plate have connections for the heat exchange media.

The GB 2 112 918 A describes a plate heat exchanger according to the preamble of claim 1 with a plurality of stacked parallel trough-like plates that span flow spaces for at least two media. The plate heat exchanger has a connection element for receiving at least one nozzle in the region of a trough-like Endplate. The nozzle is arranged on a protruding with respect to the plates portion of the connecting element. In addition, the nozzle is on the side facing the plates of the connection element. preferably attached to the connection plate in the region of a passage opening.

The Stutzenanbhdungen to the cover plates of known heat exchangers have the disadvantage of a relatively high production costs. Another disadvantage is that due to the arrangement of the nozzle at the top of structural constraints arise in the installation situation.

The object of the invention is to avoid these disadvantages and to avoid constructive constraints on a moderately simple catfish.

This is achieved by a heat exchanger according to claim 1 according to the invention.

Characterized in that the nozzle is arranged on a protruding portion of the connecting element, connecting lines can be guided laterally of the plate heat exchanger. This allows great design freedom in the choice of installation situation, as in the direction of the vertical axis much less space is required.

According to the invention, it is further provided that the connection element consists of a connection plate and a fixed attached to the connecting plate patch channel part, wherein the channel part may be formed as a preferably formed sheet metal or forged part or as a casting. The channel portion may be connected to the terminal plate by a solder, glue, screw or flare connection. According to the invention, the projecting portion of the connecting element is angled relative to the end plate. One forms Join plane between the connection plate and the channel part in the region of the protruding section with the plane of the end plate at an acute angle. In this way, it is possible to react flexibly to the respective requirements of the manufacturer.

It is particularly advantageous if the channel part is formed by a channel plate with at least one molded flow channel, which is preferably closed by a cover plate. This allows a particularly flat design of the connection element.

Particular advantages in terms of manufacturing costs arise when the terminal plate is formed by the end plate. The fact that the terminal plate is formed integrally with the end plate, the number of parts can be limited.

Alternatively, it can also be provided that the connection plate is firmly connected to the end plate. The terminal plate may be connected to the end plate by soldering, gluing, screwing or the like.

A further saving in components results when the nozzle is formed integrally with the channel part.

Furthermore, to save space, it may be advantageous for the connection plate to be stepped in the region of the protruding section, wherein preferably the connection plate is spaced from a connection plane of the end plate in the region of the protruding section.

Fig. 1

einen nicht unter die Erfindung fallenden Plattenwärmetauscher in einer Schrägansicht von oben in einer ersten Ausführungsvariante;

Fig. 2

den Plattenwärmetauscher aus Fig. 1 in einer Schrägansicht von unten;

Fig. 3

diesen Plattenwärmetauscher in einer Draufsicht;

Fig. 4

diesen Plattenwärmetauscher in einem Schnitt gemäß der Linie IV-IV in Fig. 3;

Fig. 5

den Plattenwärmetauscher in seiner Seitenansicht;

Fig. 6

einen erfindungsgemäßen Plattenwärmetauscher in einer Schrägansicht von oben in einer zweiten Ausführungsvariante;

Fig. 7

diesen Plattenwärmetauscher in einer Draufsicht;

Fig. 8

diesen Plattenwärmetauscher in einer Seitenansicht;

Fig. 9

einen erfindungsgemäßen Plattenwärmetauscher in einer Schrägansicht von oben in einer dritten Ausführungsvariante;

Fig. 10

diesen Plattenwärmetauscher in einer Schrägansicht von unten;

Fig. 11

diesen Plattenwärmetauscher in einer Draufsicht;

Fig. 12

diesen Plattenwärmetauscher In einer Seitenansicht;

Fig. 13

einen weiteren, nicht unter die Erfindung fallenden Plattenwärmetauscher in einer Schrägansicht von oben in einer vierten Ausführungsvariante;

Fig. 14

diesen Plattenwärmetauscher in einer Schrägansicht von unten;

Fig. 15

diesen Plattenwärmetauscher in einer Draufsicht;

Fig. 16

diesen Plattenwärmetauscher in einer teilweise geschnittenen Seitenansicht;

Fig. 17

einen erfindungsgemäßen Plattenwärmetauscher in einer Schrägansicht von oben in einer fünften Ausführungsvariante;

Fig. 18

diesen Plaftenwännetauscher in einer Schrägansicht von unten;

Fig. 19

diesen Plattenwärmetauscher In einer Draufsicht;

Fig. 20

diesen Plattenwärmetauscher in einer teilweise geschnittenen Seitenansicht;

Fig. 20a

diesen Plattenwärmetauscher in einer bautellsparenden Variante in einer teilweise geschnittenen Seitenansicht;

Fig. 21

einen weiteren, nich unter die Erfindung fallenden Plattenwärmetauscher in einer Schrägansicht von oben in einer sechsten Ausführungsvariante;

Fig. 22

diesen Plattenwärmetauscher in einer Draufsicht;

Fig. 23

diesen Plattenwärmetauscher in einem Schnitt gemäß der Linie XXIII-XXIII in Fig. 22;

Fig. 24

diesen Plattenwärmetauscher in einer Schrägansicht;

Flg. 25

einen weiteren, nicht unter die Erfindung fallenden Plattenwärmetauscher in einer Schrägansicht von oben in einer siebenten Ausführungsvariante;

Fig. 26

diesen Plattenwärmetauscher in einer teilweise geschnittenen Vorderansicht; und

Fig. 27

diesen Plattenwärmetauscher in einer Schrägansicht mit entfernter Abdeckplatte.

The invention will be explained in more detail below with reference to FIGS. Show it:

Fig. 1

a not falling under the invention plate heat exchanger in an oblique view from above in a first embodiment;

Fig. 2

the plate heat exchanger Fig. 1 in an oblique view from below;

Fig. 3

this plate heat exchanger in a plan view;

Fig. 4

this plate heat exchanger in a section along the line IV-IV in Fig. 3 ;

Fig. 5

the plate heat exchanger in its side view;

Fig. 6

a plate heat exchanger according to the invention in an oblique view from above in a second embodiment;

Fig. 7

this plate heat exchanger in a plan view;

Fig. 8

this plate heat exchanger in a side view;

Fig. 9

a plate heat exchanger according to the invention in an oblique view from above in a third embodiment;

Fig. 10

this plate heat exchanger in an oblique view from below;

Fig. 11

this plate heat exchanger in a plan view;

Fig. 12

this plate heat exchanger In a side view;

Fig. 13

a further, not falling under the invention plate heat exchanger in an oblique view from above in a fourth embodiment;

Fig. 14

this plate heat exchanger in an oblique view from below;

Fig. 15

this plate heat exchanger in a plan view;

Fig. 16

this plate heat exchanger in a partially sectioned side view;

Fig. 17

a plate heat exchanger according to the invention in an oblique view from above in a fifth embodiment;

Fig. 18

this Plaftenwännetauscher in an oblique view from below;

Fig. 19

this plate heat exchanger In a plan view;

Fig. 20

this plate heat exchanger in a partially sectioned side view;

Fig. 20a

this plate heat exchanger in a model-saving variant in a partially sectioned side view;

Fig. 21

a further, not falling under the invention plate heat exchanger in an oblique view from above in a sixth embodiment;

Fig. 22

this plate heat exchanger in a plan view;

Fig. 23

this plate heat exchanger in a section along the line XXIII-XXIII in Fig. 22 ;

Fig. 24

this plate heat exchanger in an oblique view;

Flg. 25

a further, not falling under the invention plate heat exchanger in an oblique view from above in a seventh embodiment variant;

Fig. 26

this plate heat exchanger in a partially sectioned front view; and

Fig. 27

this plate heat exchanger in an oblique view with the cover plate removed.

The plate heat exchangers 1 shown in the figures each have a stack 2 spaced plates 3, which alternately span a first and a second flow space, which are flowed through by a first and second medium. The plate stack 2 is bounded by a bottom plate 4 and an end plate 5. All plates 3, 4, 5 are connected by a soldering process.

In the region of the end plate 5, a connecting element 6 is arranged, which has a hervororkragenden section 7 with a nozzle 13 with respect to the plates 3, 4, 5. The connection element 6 has a connection plate 8.

In the in the Fig. 1 to Fig. 24 variants shown, a channel part 9 is fixed to the flat connecting plate 8, which may be formed as a deep-drawn or embossed and punched sheet metal part or as a forging. The channel part 9 is, for example, by a solder joint, a screw, an adhesive connection or a crimp connection with the connection plate 8 firmly connected.

Between the connection plate 8 and the channel part 9, a flow channel 10 is formed, which on the one hand via a passage opening not shown in the connection plate 8 and the end plate 5 with the flow spaces in the plate heat exchanger 1 and on the other hand via a passage opening 11 in the connection plate 8 or in the channel part. 9 , in which the nozzle 13 is inserted, is connected to not shown connecting lines.

In the in the Fig.1 to Fig. 5 dargesteilten, not falling under the invention embodiment, the nozzle 13 is arranged on the stack 2 of plates 3 facing first side 12 of the connection plate 8.

Im in the Fig. 6 to Fig. 8 shown embodiment of a plate heat exchanger 1 according to the invention, the connection element 6 is angled in relation to the end plate 5 in the region of hervororkragenden section 7, wherein a parting plane 14 between the connection plate 8 and the channel part 9 with the plane 5a of the end plate 5 an acute angle α in the embodiment about 30 °, includes.

That in the FIG. 9 to FIG. 12 Illustrated embodiment differs from the embodiment according to Fig. 6 to Fig. 8 Essentially in that the connecting piece 13 is formed by a connecting block.

In the in the FIGS. 13 to 16 illustrated example of a not falling under the invention plate heat exchanger, the connecting element 6 is stepped, wherein the protruding portion 7 of the connection plate 8 of the connection plane 5 a of the end plate 5 is clearly spaced in the direction of the bottom plate 4. The corresponding distance is in Fig. 16 denoted by a. These Execution is particularly suitable for plate heat exchanger 1 with trough-like plates 3, the edges 3a are directed to the bottom plate 4. Here, the bottom plate 8 is integrally formed from the end plate 5, whereby compared to de embodiments after Fig. 1 to Fig. 12 a component is saved.

The FIGS. 17 to 20 on the other hand show a further variant of a not falling under the invention plate heat exchanger with a stepped running connection element 6, wherein the connection plate 8 is further spaced in the region of forth projecting portion 7 of the bottom plate 4 by the distance a, as the connection plane 5a of the end plate. 6 This allows the projection according to the invention also in heat exchangers whose edges 3a are directed away from the bottom plate 4.

In Fig. 20a another variant is shown, which differs from the one in FIGS. 17 to 20 shown embodiment differs only in that the connection plate is made in one piece with the end plate 5, whereby a component is eliminated.

In the Fig. 1 to Fig. 20 Biespiele are shown in which the channel part 6 is connected via a flange-shaped connection with the connection plate 8. The 21 to FIG. 24 on the other hand show an embodiment in which the connection between the channel 6 and the terminal plate 8 via a blunt T-joint he follows. This design has the advantage that width can be saved.

In the Flg. 25 to Fig. 27 an example is shown, in which the channel part 9 is formed by a substantially flat channel plate 16, in which flow channels 10, 10 a are formed, wherein the flow channels 10, 10 a closed by an attached cover plate 15 upwards. The flow channels 10.10a lead to passage openings 11, 11a with a connection 13.

The seal between the channel part 9 and the connection plate 8 can be done in the case of a screw or Börtelverbindung by an example permanently elastic seal.

Claims (9)

1. Plate heat exchanger (1) with a plurality of tray-shaped plates stacked one above the other (3), clamped together to enclose flow passages for at least two media, with a connection element (6) incorporating at least one connection stub (13) at a preferably tray-shaped end plate (5), with the connection stub (13) arranged on a projecting section (7) of the connection element (6) projecting relative to the plates (3), such that the connection stub (13) is arranged on the side of the connection element (6) facing the plates (3), preferably at an opening representing a passage (11, 11a) in the connection plate (8), the connection element (6) having a connection plate (8) with a duct section (9) firmly attached to the connection plate (8), characterised in that the projecting section of the connection element (6) is angled relative to the end plate (5), and the joint plane (14) between the connection plate (8) and the duct section (9) at the projecting section (7) forms an acute angle (α) with the plane (5a) of the end plate (5)..
2. Plate heat exchanger (1) according to claim 1, characterised in that the duct section (9) is preferably designed as shaped sheet metal component or forging, or a casting.
3. Plate heat exchanger (1) according to claim 1 or 2, characterised in that the duct section (9) is connected to the connection plate (8) by a brazed, adhesive, bolted or flared joint.
4. Plate heat exchanger (1) according to one of claims 1 to 3, characterised in that the duct section (9) consists of a duct plate (16) incorporating at least one shaped flow duct (10, 10a), which is preferably closed off by a cover plate (15).
5. Plate heat exchanger (1) according to one of claims 1 to 4, characterised in that the end plate (5) constitutes the connection plate (8).
6. Plate heat exchanger (1) according to one of claims 1 to 4, characterised in that the connection plate (8) is firmly attached to the end plate (5).
7. Plate heat exchanger (1) according to one of claims 1 to 6, characterised in that the connection stub (13) is formed as part of the same single piece as the end plate (9).
8. Plate heat exchanger (1) according to one of claims 1 to 7, characterised in that the connection plate (8) is stepped at the projecting section (7), such that the connection plate (8) at the projecting section (7) is preferably in a different plane to the connection plane (5a) of the end plate (5).
9. Plate heat exchanger according to one of the preceding claims, characterised in that the joint plane (14) between the connection plate (8) and the duct part (9) at the projecting section (7) subtends an angle (α) of between 20° and 40° to the plane (5a) of the end plate (5).

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