EP3601922A1

EP3601922A1 - Connecting array and joining array for plate heat exchangers

Info

Publication number: EP3601922A1
Application number: EP18726033.6A
Authority: EP
Inventors: Nico Petrick; Robin Petrick
Original assignee: Pewo Energietechnik GmbH
Current assignee: Pewo Energietechnik GmbH
Priority date: 2017-03-21
Filing date: 2018-03-21
Publication date: 2020-02-05
Also published as: CN211739961U; WO2018171839A1; DE112018001475A5; DE102018106748A1

Abstract

The problem to be solved by the invention is that of providing a connecting array and joining array for plate heat exchangers in an individual and multiple arrangement, such that a flexible configuration of scalable heat exchanger expansion levels and different types of heat exchangers can be obtained in addition to interconnections of different heat sources and heat sinks and different temperature curves and media flows, which furthermore is reliable, compact and economical in terms of piping. Disclosed is a connecting array and joining array for connecting at least one plate heat exchanger (1) to at least one corresponding peripheral pipework, wherein the plate heat exchanger (1) consists of soldered heat exchanger plates (2) having connecting ducts (3) running transverse to the heat exchanger plates (2), and at least one external plate (5) has connecting holes (4), characterized in that, on the surface around the connecting hole (4) of each external plate (5), in alignment with at least one of the connecting ducts (3) or with at least one of the connecting holes (4), at least one connecting piece (6) is disposed, the connecting piece (6) being clamped together with, or relative to, the plate heat exchanger (1) by means of a clamping device (9).

Description

Connection arrangement and connection arrangement for plate heat exchangers

Connection arrangement and connection arrangement for plate heat exchangers, in particular for scaling plate heat exchangers and coupling

different heat sources and heat sinks.

There are already known different couplings of plate heat exchangers. Thus, DE 10 2005 043 731 A1 describes a heat exchanger with at least two plate-shaped flow channels, which are arranged parallel to one another and at a distance from each other and by at least one bridging the distance

Connecting channel are in flow communication. Here, the at least one connecting channel is formed by two plug-in, self-centering pipe socket. Furthermore, in DE 40 41 968 AI discloses a latent heat storage system, which allows the arrangement in modular design by arbitrarily by the arrangement of spacers and spacer tubes in the outside well insulated plate heat exchanger

Size in series connected storage cascades arise whose partitions simultaneously fulfill the function of the heat exchanger.

It is furthermore known from WO 2015/040065 Al that an attachment sleeve with an internal thread is provided on an end plate of a plate heat exchanger between two connection openings, wherein the respective end plate has a reinforcement in the region of the attachment sleeve and between the connection openings by a special structuring and embossing of the end plate , By means of

Mounting sleeve is a so-called hydro-block with seals on the

Connection openings attached and pressed to the end plate. The hydro block has different connection options.

A disadvantage of the prior art is that currently have plate heat exchanger only one-sided connection options by soldered on a terminal or end plate connecting piece. Thus there is no possibility of any space- and pipe-saving installation. The arbitrary space-saving juxtaposition is not possible. The placement of the connection options on the end or end plate with simultaneous attachment to one on this end or end plate represents a usable only to a very limited extent arrangement, as the

Compressive strength is limited and also act through the type of attachment to large forces on the plate heat exchanger and it comes to tensions that do not ensure the reliability and thus the tightness in the long term.

In addition, the connection blocks known from the prior art have the disadvantage that they are provided for each two adjacent connections as a connection component and can be produced only with great difficulty. Furthermore, these are

Connection components can be used only to a predetermined extent. In addition, these connection components are fixed in their position and not individually changeable or adjustable or not rotatable about a connection opening. In addition, it is provided that the connection openings are present only on one side or one of the outer plates of the heat exchanger and the terminal blocks can be arranged. These terminal blocks are disadvantageous only over a clamping sleeve, which arranged on the surface of this outer plate, braced, whereby a combined arrangement of several heat exchangers together or not very complicated is possible and also the requirements for the stability of the clamping sleeve very high and the respective sizes for suitable heat exchangers are very limited.

The object of the invention is to provide a connection arrangement and connection arrangement for plate heat exchangers as a single arrangement and as a multiple arrangement, thereby providing a flexible configuration of scalable

Heat exchanger expansion stages and individual heat exchanger types and of

Shading for different heat sources and heat sinks and different temperature gradients and different media streams to be achieved, which is also reliable, space and pipe saving. With the invention is achieved in the specified application that a simple

Connection arrangement and connection arrangement as a connection arrangement for

Connecting at least one plate heat exchanger is provided to a respective peripheral piping. The plate heat exchanger has on his

Connection openings but not welded, for example, or soldered Connecting pieces or connection lugs with or without thread. On the surface around the respective connection opening of the respective outer plate, for example, the outer heat transfer plate, the end plate or the end plate in the respective escape of at least one of the connecting channels or the

Connection opening is arranged a connecting piece, wherein the connecting piece is clamped to the and / or against the plate heat exchanger. With the

Connecting pieces, which can be simple tubes to functional elements, a flexible connection and connection option is created, which allows directional and function-independent connections and connections with a simple in the production plate heat exchanger. Elaborate and

space-consuming piping and the always required adaptation of the piping to the example welded or soldered connection or connection approaches accounts. With the invention we take a very high level

Achieved flexibility in the shading and connection of the plate heat exchanger, wherein the connecting pieces are also part of the peripheral piping, whereby the circuits and the connections of the plate heat exchangers are simplified and reduced in space. The cost of producing the connections to the plate heat exchanger can be reduced with the connectors to a small necessary degree, with their isolation is simplified. Furthermore, can be used for the connections and connections components, which are favorable in the quantitative production. Through the use of

Plate heat exchanger, which have no, for example, welded or soldered connection pieces or connection approaches at their connection openings, also a cost-effective design of the arrangement is possible because these heat exchangers without welded or soldered connection piece or

Connection approaches are significantly cheaper than plate heat exchangers with, for example, welded or soldered connection piece or connection lugs.

The connection arrangement and connection arrangement according to the invention can be used for different high pressures which occur, for example, in a district heating supply. It is a uniform and flat support and a uniform pressure against tipping and tilting the connecting pieces against or with the plate heat exchanger and against the surface around the respective port of the plate heat exchanger allows and achieved the required tightness.

It is advantageous that two, three or more plate heat exchangers can be connected via the connection arrangement and connection arrangement. This is for

Connecting at least two plate heat exchangers between the

Plate heat exchangers in the flight of at least one of the

Connecting channels or at least one of the connection openings arranged at least one connector. Also an extension of existing connected according to the invention or connected individual or even more

Plate heat exchanger is possible. To the existing or possibly according to the desired flow path to be replaced connecting pieces or the other plate heat exchangers can be connected. The respective connecting piece is placed on the surface around the connection opening of the respective outer plate of the respective plate heat exchanger and with or against at least one of the j eweiligen plate heat exchanger by means of a

Clamping device clamped. However, the bracing can also over several

Plate heat exchanger away, for example, each outer

Plate heat exchanger, carried out without causing each connector individually or individually or as a group with one or the respective plate heat exchanger but over the entire arrangement of the plate heat exchanger is clamped away.

As a result, the respective plate heat exchangers are mechanically and / or hydraulically connected. With the invention is thus achieved that a connection arrangement and

Connecting arrangement of at least two plate heat exchangers for connecting to each other and for connecting at least one of the plates heat exchanger is provided to a respective peripheral piping, wherein the

Plate heat exchangers, for example, are arranged as a parallel and / or serial cascade and the PI atten heat exchangers consist of soldered Wärmeübertragerpl atten and transverse to the heat exchanger plates arranged connecting channels and connection openings in an outer plate. This outer plate may be, for example, an outer heat transfer plate or an end plate or end plate. The plate heat exchangers are mechanically and / or hydraulically connected. Between the Plattenwärmeübertragern in the alignment of at least one of the connecting channels or the connection openings, a connecting piece is arranged, wherein the at least one connecting piece on the surface around the connection opening of the respective outer plate, which may be an outer heat transfer plate, a cover plate or an end plate, placed is and with or against at least one of the respective ones

Plate heat exchanger is clamped. This makes it possible to switch two, three or more plate heat exchangers, for example, as a cascade and also to connect them to the peripheral piping so that they are individually scalable in their entirety in their resulting size, special designs of heat exchangers, such as a U or Z Heat transfer and also have different functions and flow patterns for different heat sources or

Allow heat sinks. There are also simple ones for that

Use plate heat exchangers, which do not already provided ex works, for example, welded or soldered connection piece or

Connection approaches at the connection openings, so outside plates without, for example, welded or soldered connection piece or

Connection approaches at the connection openings, own. The joints with gasket or the joints directly as a gasket are applied to the surface of the respective outer plates at or around the respective ones

Connection openings of the respective connecting channels in the outer

Heat exchanger plates, end plates or end plates placed or arranged and braced on and with at least one of the plate heat exchanger by at least one clamping device. This also ensures that any occurring forces caused by stresses and loads on the heat exchanger and its

Connecting pipes by means of firmly clamped with the plate heat exchanger

Connectors are intercepted. An immediate load on individual areas or plates of the plate heat exchanger, as in conventional, with

Connecting pieces or clamping sleeves provided plate heat exchangers occur, are thus excluded. This also leverage effects are avoided, which would lead to leakage.

The respective connection between the plate heat exchangers formed by the connecting pieces also makes possible a connection depending on the design and requirement direct flow connection of the heat transfer media between the

opposite connection openings. The flow connection can also be indirect or prevented. It is possible almost any scaling of transmission powers to

To make available, since by means of standard performance of the heat exchanger any combination of which lead to a desired performance. So it is possible to provide a dynamic power adjustment. Furthermore, this allows

Connection arrangement and connection arrangement different versions of plate heat exchangers, for example as a Z-heat exchanger, as U

Heat exchangers or asymmetric heat exchanger arrangements, which can be used in each case on simplified versions of standardized heat exchangers and can be dispensed with the use of expensive and complex manufactured heat exchanger with special forms. You can do that

Combine plate heat exchangers of different designs with respect to the embossments of the heat exchanger plates together according to the requirements. So also mirrored heat exchanger arrangements can be implemented easily and with little material effort. In addition, the flexibility increases, as such

Arrangement can be adapted to the actual needs at any time, without completely convert or replace heat exchanger. This also applies in the

Event of an accident. Furthermore, different heat transfer media and heat transfer groups can be coupled with each other in such a way that with regard to

Heat transfer the highest possible efficiency is achieved. Preferably, connecting pieces with a cylindrical cross section are used. But you can also use connectors with a square cross-section. Decisive is the accuracy of fit to the respective port or the respective surface heat exchanger plate or end plate to ensure the tightness, although a seal or the connector is used directly as a seal between the connector and the surface. The shape and size of the inner cross section depends on the requirements of the respective

Circuit configuration. In the simplest case, the inner cross section of the connecting piece corresponds at least to the shape and size of the respective connection opening.

The connector is also understood as both a connector and as End piece, as with the connector, for example, in addition to mechanical and hydraulic connections and corresponding connections and branches with or without further additional functions and blind plugs or, for example, locks for closing hydraulically unused

Connection openings or to prevent hydraulic connections are realized. For simplicity, the term connector is used, with connector and tail are included. The connecting piece as such or as connecting piece comprises conceptually and in each case functionally the respective connections and connections of at least one heat exchanger for peripheral piping and the respective connections and connections of at least one heat exchanger to at least one further heat exchanger connected thereto.

For simplicity, the plate heat exchanger is also referred to as a heat exchanger.

The peripheral piping is also referred to as peripherals. To

Peripherals also include other components associated with the or

Heat exchangers are mechanically or hydraulically or functionally connected. The distinction between connection arrangement and connection arrangement serves in each case the conceptual separation with regard to the connection of a heat exchanger to a periphery or the connection and the connection of several

Heat exchangers. Technically stand the connection arrangement and

Connection arrangement equally for mechanical and hydraulic connections. The respective requirements for stability and tightness are the same.

Furthermore, it is necessary to keep mechanical stresses in the arrangement as low as possible.

The mechanical and hydraulic connections are understood to be the connections between the plate heat exchangers made by the connectors, the spacers and / or by the peripheral tubing irrespective of whether they allow or prevent fluid communication.

Advantageously, the connector is made in one or more parts. hereby can be different advantageous designs and different

Produce variant versions. Thus, in addition to the production of simple connectors and connectors according to the respective

Match heat exchanger appropriately.

By having at least one intermediate piece between two connecting pieces or two connecting piece parts, it is possible to realize any distances or any desired functions or components between adjacent plate heat exchangers in the case of, for example, unified connecting pieces. This ensures that the connecting pieces, for example, in relation to the

Plate heat exchangers and, for example, with respect to the length are each uniform and come for different distances simple spacers, for example in the form of simple tubes used. In one embodiment, the connecting piece and / or the intermediate piece is not or at least partially flowed through. This allows separations of circuits or static flow reducers to be implemented as well as blanking closures. It is achieved that in each case at the connection openings of the plate heat exchanger

Arranging connecting pieces, which allow or prevent a flow or a flow connection depending on the circuit configuration. The formation of complex serial or parallel cascades of plate heat exchangers is favored. Thus, the connectors can be universally between

Insert plate heat exchangers or peripherally outside. Advantageously, the connecting pieces and / or the intermediate pieces can be flowed through at least in regions, whereby partial areas are formed, via which a connection with other partial areas or partial circuits can be produced. These subranges can be serial or parallel cascades of

Be plate heat exchangers. In addition, sensors or other components can be arranged in the connecting pieces.

In a further development of the invention, the connecting piece projects into the

Connection opening into or centered in the connection opening. This is independent of a position assurance and reliable positioning reached the connection opening.

Advantageously, the connecting piece has a connection opening with respect to the connection opening

Excess. This ensures that the connecting piece rests reliably on or around the connection opening, even if a lateral displacement of the

Connector is necessary for a position adjustment. The reliable fit of the connector or the seal is favored.

By having the connecting piece and / or the intermediate piece at least one branch, connections to other connecting pieces, heating circuits, consumer circuits or other heat sources can be produced directly at the respective connection and plate heat exchanger and between the heat exchangers. In conjunction with the flow-through sections, such branches can be in a

Connecting piece and / or with an intermediate piece for different pitch circles or connections. These connections can also be arranged distributed multiple times on the outer circumference of the respective connecting pieces and / or the intermediate pieces, if necessary, for example, for various outlets and transitions to other plate heat exchangers or to form a specific heat exchanger shape and configuration. Also in this case, the formation of complex serial or parallel cascades of plate heat exchangers is favored. Among the branches are branches and mergers or

Feeds of media streams understood equally.

In a further development of the arrangement, the connecting piece and / or the intermediate piece has a barrier wall and / or partition wall transversely and / or longitudinally for the purpose of escape of the connection channels. Thus, it is also possible that because of the partition wall or barrier wall via the connecting pieces no direct flow connection between the opposite connection openings is possible, but by means of the branches other connections to other pitch circuits or heat exchangers or other connection openings are created. So can be for example about a

Connector and / or via a spacer two different ones

Establish fluid connections by each flow connection is guided via a connecting piece provided with a partition wall and / or intermediate piece in two respectively opposite connection openings and thereby no connection or Mixing of the respective media in the connector and / or adapter takes place. In addition, the formation of serial or parallel cascades of

Plate heat exchangers favored. Advantageously, the connecting piece and / or the intermediate piece to the alignment of the connecting channels or around the connection opening can be arranged twisted arbitrarily, whereby direct and short lines of the piping of the plate heat exchanger and the periphery are made possible. Thus, branches can be turned directly in the desired direction and laid optimally or efficiently, so that can be dispensed with costly and assembly-consuming angle or other fittings or their number can be at least significantly reduced. In addition, depending on whether branches or other arrangements hindering rotation are present, the connecting pieces and / or the intermediate pieces can be turned into a desired or tension-free position until the final tensioning. Since the connectors themselves sealing as a seal or for example by means of a zero-ring seal against the surface of the outer plate, an external

Heat exchanger plate or end plate or end plate is, or

Between adapter are sealed, a rotation in the end position is easily possible. Depending on the required compressive strength of the overall arrangement, a twisting of the connecting pieces and / or the intermediate pieces is not or only partially possible because of

To choose contact pressure by the bracing so high that instability of the overall arrangement and tilting of the connecting pieces relative to the surface of the outer plate is to be avoided, as this would lead to leaks.

By virtue of the fact that the connecting piece and / or the intermediate piece and / or the branch advantageously has at least one valve, filter, pump and / or thread, on the one hand the connection, control or disconnection of

Flow connections as well as various circuits by plate heat exchangers, implement the connectors, the spacers and / or the branch.

Thus, it is possible to form partial streams or suppress or whole

Disconnect or additionally control arrangements of serial or parallel cascades of plate heat exchangers. Thus, an arrangement for prepare for later expansion without having to dismantle it completely in due course.

In a further development of the invention, the connecting piece is designed as an end piece or as a blind closure piece. An end piece or a blind closure piece is, for example, at the respective outer connection openings of

Plate heat exchangers arranged. In this way, in particular a constructive simplification is achieved, since in this case a minimization of the necessary parts can be achieved. In addition to fewer parts is also a space-saving and

achieved material-saving design. It is further achieved with the connectors as an end piece or blanking piece, that a single heat exchanger is already prepared so that it is supplemented by the replacement or modification of the end pieces or blanking, against or to other, for example, continuous connecting pieces to another heat exchanger, if there is a need for more power, for example.

On the other hand, blind plugs or other components or pipelines can be conveniently mounted directly on the connecting pieces or the connecting pieces form these directly.

Advantageously, the connector comprises at least one seal, whereby the simple and also reliable assembly is favored.

By the connector is designed as a seal or gasket, a structural simplification is achieved, which also advantageous in arrangements before

Heat exchangers is, which are arranged directly next to each other, without the between the heat exchangers branches are required. That's the way to go

For example, arrange several plate heat exchangers close to each other with little space required. In this way, in a small space and different power levels by means of individual plate heat exchanger by the

Arrangement and combination of corresponding individual services realize. By the joints are designed as a seal or gasket, a structurally simple and efficient design is achieved as a combination of different functions. Advantageously, two or more connecting pieces are designed as a connection block or as a connection assembly for two or more connection openings. Thus, structural simplifications and an increase in the stability of the arrangement of connectors and plate heat exchangers or of

Reach connectors and plate heat exchangers. In addition, the clamping of the connecting block or as a connection module designed connecting pieces simplifies. By arranging the tensioning device outside and / or inside the plate heat exchanger, the connecting pieces can be clamped more easily, depending on the design and as required, with the plate heat exchanger (s). This also makes it easier to produce individual shading of plate heat exchangers and each other and their or their periphery.

In a further development of the arrangement, at least one connecting piece is clamped with the plate heat exchanger (s) as a package, whereby a secure, stable and media-tight composite is created, which meets the high requirements of

Pressure tightness is justified and also the plate heat exchanger not or only minimally mechanical impact to the effect that the inner structure is not endangered and the outer plate is not particularly stressed to train.

By the at least one connecting piece with or against the at least one plate heat exchanger with at least one of the at least one

Plate heat exchanger and / or the at least one connector is clamped around and / or engaging clamping device, a secure and stable composite is created, which significantly improves the stability of the overall arrangement and the high requirements of pressure tightness or lack of voltage within the plate heat exchanger and their arrangement particularly does justice. At the same time, the assembly is simplified, since the connecting pieces are better managed and held at the same time. Thus, clamping devices are also included, which are for example made of flat material pushed onto the connecting pieces and abut against a brim, a flange or a snap ring on the heat exchanger side end of the connector and outside the plate heat exchanger this Thus, encompassing drawn by means of, for example, a threaded bolt and nuts against, for example, another flat material with or without connectors and thus tighten the or the connectors with the plate heat exchanger. Other variants of the bracing are, for example, the tensioning on edges of the plate heat exchanger in which they are engaged behind. Other combinations or other arrangements and orientations of clamping elements are possible, which respectively clamp the connecting pieces against the plate heat exchanger. This is advantageous at least one connector and / or the or

Plate heat exchanger with a through the connection opening and the

Connecting channel and that clamp guided tensioning device. This ensures that can be dispensed with elaborate constructions for the implementation of the clamping device outside of the plate heat exchanger and the clamping device is arranged within the Plattenwärmeübertragers simplified and guided by the standard or usual openings. Additional openings or individual adjustments of the plates heat exchangers are not required. This will provide a more efficient connection arrangement and

Connection arrangement achieved. In addition, a higher stability is achieved.

In one embodiment of the invention, the clamping device is screwed or braced with the at least one connector and / or by the

Connector led. As a result, a hidden or concealed mounting within the connecting pieces and the or the heat exchanger is achieved. At the same time, a simplification of the connecting pieces is achieved, depending on the version

Openings and can be dispensed with additional seals. In each case, the stability is additionally increased independently of each other.

By the tensioning device is guided by the connector, a covert clamping is favored.

Here, for example, in or with the connector or through the

Connector screwed and / or guided the tensioning device and biases the connector against the plate heat exchanger. In a further development of the invention, the clamping device comprises at least plates or plates and / or screws or threaded rods with nuts, whereby a reliable, the forces intercepting bracing is favored and also the necessary tightness is improved.

If necessary, holes in the sheets or plates for performing or screwing the screws or threaded rods are available. If the screws or threaded rods are to be screwed directly to the sheets or plates, they are

preferably thread in the holes.

The plates or sheets have, depending on need and need at least one opening in and through which the connector can be inserted or pushed. If no connectors are to be pushed through the plates or sheets, can be dispensed with the openings.

Preferably, the at least one connecting piece on the outer wall at least partially comprises at least one radial one in the circumferential direction

Supernatant, for example, is a shape of a brim, a flange, a flange-like projection and / or a snap ring, guided in a groove.

Alternatively or additionally, at least one clamping web is present within the connecting piece. By means of which a distortion within the connectors is favored and also allows the media flow.

In one-sided assembly, the connector may on the outer wall, for example, have a widening to each outer plate conical cross-section on which rests on which the respective opening of the plate and the displacement of the plate is inhibited for bracing.

With the respective independent embodiments on the outer wall, in cross-section or within the connecting piece clamping is favored because the clamping device press against the connecting pieces uniformly and flat and thereby the distortion of the connecting pieces against or with the plate heat exchanger or against the or with the surface around the respective connection opening of the plate heat exchanger voltage low. Tilting and the associated leaks can be reduced or avoided.

Regardless of the specific clamping device and its components as well as independent of the concrete suitable design of the connecting pieces, the connecting pieces are preferably perpendicular to or with the plate heat exchanger and against the surface around the respective connection opening of the

Plate heat exchanger braced.

An increased stability of each formed arrangement and improved

Sealing effect are achieved. Here are different versions in question, which meet the described effect and function.

Several embodiments of the invention are illustrated in the drawings and will be described in more detail below. Show it:

Fig. 1 shows a plate heat exchanger with strained connectors on the connection openings and prepared clamping device for another

Plate heat exchanger,

Fig. 2 shows two plate heat exchanger with connectors to the

Connection openings with a two plate heat exchanger with the

Connectors as a package tensioning jig,

3 shows two plate heat exchangers with strained connecting pieces at the connection openings, wherein different variants of a clamping device are used,

Fig. 4 shows a plate heat exchanger with strained connectors at the connection openings and prepared clamping device for another

Plate heat exchanger,

Fig. 5 four plate heat exchanger as a branched cascade with connectors as sealing disks at the connection openings and with within the

Plate heat exchanger, guided by this tensioning devices, Fig. 6 two connected plate heat exchanger with connectors and

Tails at the connection openings and with within the

Plate heat exchanger, guided by this tensioning devices,

7 is a sectional view of a plate heat exchanger with connectors with branches at the connection openings and with within the

Plattenwärmeübertragers and the connectors guided and arranged tensioning devices,

8 shows three plate heat exchangers as a branched cascade with connecting pieces at the connection openings, the clamping device not being shown for the sake of simplicity,

Fig. 9 three plate heat exchanger, each with the same size and thus power as a cascade with connectors on the connection openings, wherein the

Simplification the tensioning device is not shown,

10 shows three plate heat exchangers as a cascade, each having a different size with connecting pieces at the connection openings, wherein the clamping device is not shown for the sake of simplicity,

Fig. 11 two plate heat exchanger with connectors to the

Connection openings as U heat exchanger with central connection and with

Flow pattern, wherein for simplicity, the clamping device is not shown, Fig. 12, two plate heat exchanger with connecting pieces to the

Connection openings and with a complex piping, for simplicity, the clamping device is not shown,

Fig. 13, two plate heat exchanger with connectors to the

Connection openings in a mirrored arrangement with flow,

14a to 14e are schematic representations of different shadings of

Plate heat exchanger with connecting pieces at the connection openings and with flow, wherein for simplicity, the clamping device is not shown, Fig. 15 five plate heat exchanger as a branched cascade, wherein for simplicity, the clamping device is not shown,

16a to 16e sectional views as a section of connecting pieces with

Clamping device in each case at a connection opening of an outer plate and Fig. 17 are schematic representations of a plate or a sheet as part of a tensioning device and of connecting pieces with bayonet. In the connection arrangement according to the invention for connecting a

Plate heat exchanger 1 to a respective peripheral piping consists of

Plate heat exchanger 1 from soldered heat exchanger plates 2 extending transversely to the heat exchanger plates 2 connecting channels 3 and in a

outer plate 5 have connection openings 4, on the surface around the connection opening 4 of the respective outer plate 5 in the alignment of at least one of the connecting channels 3 or at least one of the connection opening 4, a connecting piece 6 is arranged, wherein the connecting piece 6 with or against the plate heat exchanger 1 is braced. The outer plate 5 may be the respective outer heat exchanger plate 2 or end plate 5, or end plate 5. This depends on the particular concrete used plate heat exchanger. 1

In Figure 7, a single, known plate heat exchanger 1 is shown laterally in section. On the surface of the outer plate 5 to the

Connection opening 4 of each outer plate 5 in the run of the

Connection channels 3 are arranged connecting pieces 6, each having radially arranged branches 11 for connection to the further periphery and installation. The bracing of the connecting pieces 6 by means of a clamping device 9 comprising a threaded rod 13 or a rod 13 with partial

Threaded reaches the respective ends and nuts 16 or cap nuts 17. The first end is within a connector 6 in a blind hole with

Internal thread 12 screwed in the closed end face of the connecting piece 6, which is arranged on or about one of the connection opening 4 on the right side of the illustrated plate heat exchanger 1. The threaded rod 13 or

Rod 13 is guided through connection openings 4 and the connecting channel 3. On the opposite, ie the left side of the illustrated plate heat exchanger 1, the threaded rod 13 or rod 13 or its second end by a second

Connector 6 and a through hole 14 at the front end of the second connecting piece 6 out.

Between the outer plate 5 and the connecting pieces 6 are seals 15, for example, O-rings arranged. Depending on the circumstances and requirements, as shown in Figure 7 at the upper connecting pieces 6, on the second end, first a nut 16 is screwed through which the two connecting pieces 6 against the surface of the outer plate 5 to the connection port 4 and the plate heat exchanger. 1 be braced with the necessary strength for stability and tightness. The tightness of the screw of the nut 16 is additionally achieved by a further screwed cap nut 17 with a gasket 15. This ensures that on the one hand the Anpressdruckt the connecting pieces 6 and on the other hand, the tightness of various components are achieved, which are designed especially for the task.

Instead of the threaded rod 13 or rod 13, a screw 13 can be used in the appropriate length and with a suitable screw head, which on the one hand ensures the strength and on the other hand, the tightness without overloading or destroying the seal.

Another possible embodiment is, as in Figure 7 at the bottom

Connectors 6 shown, the pressing and sealing with only one

Cap nut 17 with seal 15 is realized.

The connection arrangement according to the invention and connection arrangement of at least two plate heat exchangers 1, for example as a parallel and / or serial cascade, wherein the plate heat exchanger 1 soldered from

Heat exchanger plates 2 and arranged transversely to the heat exchanger plates 2 connecting channels 3 and in an outer plate. 5

Having connection openings 4, wherein the plate heat exchanger 1 are mechanically and / or hydraulically connected, comprises between the

Plate heat exchangers 1 in the escape of at least one of

Connecting channels 3 or at least one of the connection openings 4 a

Connecting piece 6, wherein the at least one connecting piece 6 is placed on the surface around the connection opening 4 of the respective outer plate 5 and is clamped with or against at least one of the respective plate heat exchanger 1.

This connection arrangement and connection arrangement is shown in FIGS. 1 to 6 and 8 to 15 shown.

Figure 1 shows a heat exchanger with connectors 6 in the form before

Pipe sections at each of the connection openings 4, with a partially not shown seal 15 on the surface of the outer plate 5 to the connection opening 4 of the respective outer plate 5 in the run of the

Connecting channels 3 are arranged.

For example, a metal plate 18 or a plate 18 are preferably made of metal on two adjacent connecting pieces 6, wherein in the plate 18 or the plate 18 openings 34 corresponding to the shape and size of the cross section of

Connectors 6 are present. Through these openings 34 in the respective sheets 18 or plates 18, the connecting pieces 6 are guided. At the respective end of the connecting pieces 6 facing the connection opening 4, snap-in rings 20 inserted in grooves 19 and projecting radially are present. As an alternative to one of the snap rings 20, a flange-like projection, as shown in FIGS. 16b and 16c, is present at one end. However, the openings 34 in the sheets 18 or plates 18 are smaller than the

Circlips 20 or the flange-like projection 30, so that the snap rings 20 or the flange-like projection 30 provide the necessary support surface for the sheets 18 or plates 18 and the connectors 6 can be braced on the plates 18 or plates 18 with the plate heat exchanger 1.

The plates 18 or plate 18 protrude plate heat exchanger 1 to two

opposite outer edges. In the projecting portions of the plates 18 or plate 18 are each holes through which a screw 13 or a threaded rod 13 is guided, by means of which and at least one nut 16, the two adjacent arranged on two opposite sides of the plate heat exchanger 1 on the connectors 6 sheets 18 or plates 18 are clamped together and against the plate heat exchanger 1. At least the metal sheets 18 or the plates 18 and the screw 13 or the threaded rod 13 with the nuts 16 form the clamping device 9. In this particular embodiment of a connection arrangement and

Connection arrangement are each two connecting pieces 6 of two adjacent connection openings 6 with the plate heat exchanger 1 and

braced opposite each other. Thus, the clamping device 9 surrounds the plate heat exchanger 1. This connection arrangement and connection arrangement can be implemented easily with only one plate heat exchanger 1, since the respective circumstances are easily transferable. In contrast to FIG. 1, in FIG. 2, two plate heat exchangers 1 are clamped as a package by means of clamping devices 9, the one shown on the right in FIG

Plate heat exchanger 1 only on one side connection openings 4 and between the plate heat exchanger 1, the four connection openings 4 are connected via four connecting pieces 6 in the form of pipe sections. The plate heat exchanger 1 shown on the left in Figure 2 has corresponding left outside

Connecting pieces 6, which, as described for Figure 1, on

plate heat exchanger end end circlips 20 or a flange

Supernatant 30 and correspondingly designed sheets 18 or 18 plates have. The plates 18 or plates 18 shown on the right in FIG. 2 have no openings. The respective plates 18 or plates 18 protrude on opposite

The two plate heat exchanger 1 and the intermediate and the outer connectors 6 are braced as described in Figure 1 via screws 13 or threaded rods 13 with nuts 16. At the respective connection openings 4 between the surface of outer plates 5 and the connecting pieces 6 are each seals 15, partially not shown available. At least the sheets 18 or the plates 18 and the screw 13 or the threaded rod 13 with the nuts 16 form the

Clamping device 9. The tensioning device 9 surrounds the plate heat exchanger 1. In FIG. 3, deviating from FIG. 2, the connecting pieces 6 are in the form of

Tube sections at their ends with the respective plate heat exchanger 1 at the end via clamping devices 9, which comprises in the concrete embodiment plates 18 or plates 18 and screws 13 or threaded rods 13 and nuts 16, braced, wherein the right in Figure 3 plate heat exchanger 1 only one side has connection openings 4 and the tensioning device 9 at this

Plate heat exchanger 1 additionally comprises fastening means 21.

Between the plate heat exchanger 1, the respective four connection openings 4 are connected via four connecting pieces 6, wherein the connecting pieces 6 with

Circlip 20 or flange 30 with the right in Figure 3 shown

Plate heat exchanger 1 via the above-described, the plate heat exchanger 1 at opposite outer edges superior plates 18 or plates 18 and braced by screws 13 or threaded rods 13 and nuts 16, each suitable fasteners 21 or correspondingly suitable screw heads or corresponding suitable nuts 16, the edges of the unopened engage outside plate 22 as the back of the plate heat exchanger 1 shown in Figure 3 right, so as to provide the necessary contact pressure for the stability and tightness of the transitions of the connecting pieces 6 to the connection openings 4. Due to the structure of the plate heat exchanger 1, the edge of the unopened outer plate 22 of the back circumferentially web-like and thus provides the necessary support for the other suitable fastener 21 or the corresponding suitable screw head or the corresponding suitable nut 16. The left in Figure 3 shown plates heat exchanger 1 has corresponding left and right connectors 6, which, as described for Figure 1, at the plate heat exchanger end end snap rings 20 or a flange

Supernatant 30 and correspondingly designed sheets 18 or 18 plates have. The respective plates 18 or plates 18 project beyond the plate heat exchanger 1 at opposite outer edges. The connecting pieces 6 and the intermediate plate heat exchanger 1 are braced with nuts 16 via screws 13 or threaded rods 13 as described in FIG. At the respective connection openings 4 between the surface of outer plates 5 and the connecting pieces 6 are each seals 15 partially not shown available.

In contrast to the figures 13, clamping plates 23 are provided transversely to the alignment of the plates 18 or plates 18 in FIG. 4, wherein the clamping plates 23 are each arranged between two connecting pieces 6 and project beyond the plate heat exchanger 1 at two opposite outer edges. Overlapping sheets 18 or plates 18 is no longer necessary because the clamping takes place via the clamping plates 23. The clamping takes place, as described above by means of screws 13 or threaded rods 13 and nuts 16. Here, the clamping device 9, formed at least from sheets 18 or plates 18, clamping plates 23, screws 13 or threaded rods 13 and nuts 16, the plate heat exchanger. 1

However, the clamping plate 23 may also be designed as edgewise belt, as this bending moments are reduced or avoided (not shown). In Figure 5 are between the respective plates heat exchangers 1 the

Connectors 6 designed as sealing washers 6. As a result, a very space-saving arrangement is achieved, which nevertheless has a high degree of flexibility. The sealing disks 6 are suitable both as a continuous connecting piece and as an end piece 25 or blind closure 25.

The respective plate heat exchangers 1 are each by means of a through the respective connecting pieces 6 as sealing disks 6, through the respective

Connection openings 4 and the respective connection channel 3 guided

Clamping device 9 braced.

The tensioning device 9 comprises a threaded rod 13 or a rod 13 with partial threaded portions the respective ends for screwing nuts 16 and cap nuts 17. At the respective ends, depending on the circumstances and requirements, either first a nut 16 optionally with a

Washer screwed on and then a cap nut 17, which except for the

Sealing disk 6 is enough.

On the other hand, immediately a sufficiently large cap nut 17 on the

Sealing disc 6 are screwed, as this can be achieved equally depending on the requirements, in particular with respect to the pressure and the stability of the contact pressure and tightness.

On the other hand, it is sufficient that instead of the threaded rod 13 or rod 13, a screw 13 in the appropriate length and with a suitable screw head is used, which on the one hand the strength and on the other hand the tightness with respect to the

Stability and sealing washer 6 guaranteed. On the screw 13 can then screw the cap nut 17 accordingly. Due to the simple design of the connecting pieces 6 as sealing disks 6 or as a piece of pipe, a position correction of the arrangement can still be made until just before the final tightening of the clamping device 9.

6 shows a further embodiment of a clamping device 9 is shown, in which a threaded rod 13 or a screw 13 through the connection opening 4, the

Connecting channel 3 and is guided in or through the connecting piece 6.

Between the plate heat exchangers 1 shown in Figure 6 are simple

Connectors 6 as pipe sections, some with branch 11, available. In each case outside of the illustrated plate heat exchanger 1 connecting pieces 6 are present as pipe sections, which have clamping webs 24 transversely to the flow direction. The clamping webs 24 are each flow around the side and with the

Inner wall of the connecting pieces 6 connected or jammed with this. The threaded rod 13 or the screw 13 is through a bore 14 in the clamping web 24 in the respective connecting piece 6, through the respective connection openings 4, the respective connecting channels 3 and through the respective intermediate

Connectors 6 and again passed through a bore 14 in the clamping web 24 in the other, opposite connector 6 and is screwed there with a nut 16 or screwed directly into an internal thread 12 in the bore 14. The access to the threaded rod 13 or the screw 13 and nuts 16 is therefore possible only axially through the tube openings of the connecting pieces 6. Advantageously, only the seals 15 between connector 6 and each outer plate 5 are present.

The at least one clamping web 24 may be executed in accordance with multiple execution also to two parallel spaced clamping webs 24 or as a web cross, through which each of the threaded rod 13 or the screw 13 is guided (not shown). There are also other embodiments in question, which are arranged within the connecting pieces 6 and allow a performing or screwing and clamping with a screw 13 or a threaded rod 13 with optionally a nut 16.

In this case, it must be taken into account in the individual case and according to necessity that the resulting reduction in cross-section is to be kept low or, if appropriate, compensated by a larger cross section of the respective connecting piece 6.

When connecting pieces 6 as blind closure 25 or end piece 25 as already stated above blind holes with internal thread 12 are present, in which the guided through the arrangement screws 13 or threaded rods 13 are screwed and over the clamping web 24 of the opposite connector 6 by tightening the screw 13 or Mother 16 are strained.

Furthermore, the variant is provided that a connecting piece 6 as blind closure 25 or end piece 25, a blind hole with internal thread 12 and the other

Connecting piece 6 is a sealing washer 6. The threaded rod 13 or the screw is in this case by the sealing washer 6, through the respective connection openings 4, the respective connecting channels 3 and by the respective intermediate

Connectors 6 out and screwed to the connector 6 as a blind closure 25 or end piece 25. The tightening or countering then takes place on

Connecting piece 6 as a sealing washer 6 as described above.

In FIGS. 8 to 12, 14 a to 14 e and 15, the illustration of the components of the tensioning device 9 is omitted for the sake of simplicity.

FIG. 8 shows a possible arrangement as a serial cascade. In this case, any circuits can be represented, which are indeed operated or tapped according to energy requirements. With valves and pumps in the connecting pieces 6 (not shown), this is still supported. The connecting pieces 6 may have branches 11, as shown for example in Figures 6, 7 and 12 FIG. 9 shows a parallel connection of three plate heat exchangers 1, each with the same power. This parallel cascade allows power to be scaled by adding and locking the individual plate heat exchangers 1. Here, different powers can be mapped, which are switched as needed. Here, for example, valves 7 and pumps (not shown) are used in the connecting pieces 6. The connecting pieces 6 may also have branches and feeders (not shown).

FIG. 10 shows a parallel connection of three plate heat exchangers 1, each with different powers. This parallel cascade shows the scaling of performance by standardized plate heat exchangers 1, which are combined as needed. Elaborate custom or expensive

Plate heat exchanger 1 certain power can be on simple and cheap plates heat exchanger 1 with each other and their services

Distribute the combination to obtain the desired performance. Here, too, different performance needs can be mapped, which are switched as needed. Here, for example, valves and pumps in the connecting pieces 6 are used (not shown). The connectors 6 may also include branches and feeds (not shown).

FIG. 11 shows a heat exchanger arrangement of two in concrete

Embodiment of the same size Plattenwärmeübertragern 1 as U-heat exchanger with exemplary flow directions 27. The connections between the plate heat exchangers 1 and the pipe sections for connecting the periphery are formed by connecting pieces 6. The two connectors 6 between the

Plate heat exchangers 1 in the upper region include a barrier wall 26, which prevent the flow and thus ensure the flow as a heat exchanger U. In the lower region of the plate heat exchanger 1, two of the connecting pieces 6 are each formed on the outside as a blind closure. In the lower area are each outside also the two center connections.

FIG. 12 shows a connection arrangement and connection arrangement of two plate heat exchangers 1, between the one-piece and the next one

Connectors 6 and multi-part connectors 6 and two Connecting pieces 6 are provided with an intermediate piece 10 arranged therebetween. At the intermediate piece 10 and to the multi-part connecting pieces 6 a branch 11 with valve 7 is present in each case. On the right side of the plate heat exchanger 1 shown on the right in FIG. 12, connecting pieces 6 are present as a pipe section in order, for example, to connect further peripherals or other components or plates to heat exchangers 1.

The multipart connectors 6 between the two two

Plate heat exchangers 1 each have a partition wall 26 in the boundary region of the two parts of the connecting pieces 6.

On the left side of the plate heat exchanger 1 shown on the left in FIG. 12, connecting pieces 6 are present as a pipe section, to which branches 11 for the primary and secondary circuits are connected. The branches 11 are arranged side by side to save space in parallel.

On the left side of the plate heat exchanger 1 shown on the left in FIG. 12 and on the right side of the plate heat exchanger 1 shown on the right are respectively

Connectors 6 as a pipe section for connection of the further circuit structure, so the periphery and connectors 6 as blind caps 25 available.

The terminal arrangement and connection arrangement of two

Plate heat exchangers 1 according to Figure 13 shows a mirrored arrangement of the two plate heat exchanger 1 with exemplary flow 27 between the two plate heat exchangers 1 are connecting pieces 6, which depending on

Circuit each have two barrier walls 26 or a branch 11. The branches 11 lead for example to the energy source, such as a boiler or

District heating. The two in the flight of the connectors 6 with branch 11, the

Connection openings 4 and the connecting channels 3 located connectors 6 as blind plugs 25 on the outer sides of the two plate heat exchanger 1 according to Figure 13 are by means of the connecting pieces 6 with branch 11, the connection openings 4 and the connection channels 3 and through the Connectors 6 clamped as blind plugs 25 threaded rods 13 with nuts 16 as a clamping device 9.

The other four connectors 6 on the outsides of the

Plate heat exchangers 1 and arranged between the plate heat exchangers 1 connecting pieces 6 with the two barrier walls 26 are clamped by means of plates 18 and screws 13 with nuts 16, wherein the connecting pieces 6 on the outer sides corresponding snap rings 20 or flanges 30 or brims 30 (not shown). This embodiment shows that different ones

Variants of the bracing can also be combined.

The schematically illustrated connection arrangement and connection arrangement of plate heat exchangers 1 according to FIG. 14a shows a parallel shading of two and according to FIG. 14b a serial shading of three plate heat exchangers 1 with an exemplary flow path 27.

Between the two plate heat exchangers 1 are connecting pieces 6, which partially in particular for the serial shading corresponding to the desired flow path barrier walls 26 have. Likewise, each outside

Plate heat exchangers 1 connectors 6 available, which depending on

Flow path and need barrier walls 26 have or are designed as an end piece 25. The connecting pieces 6 between the plate heat exchangers 1 can also be reduced to a very short length or form directly as a sealing washer 6, provided that branches 11 are not required. This creates a very compact arrangement with low space and piping requirements.

FIG. 14 c shows by way of example the schematic connection arrangement and

Connection arrangement of three plate heat exchangers 1 with exemplary

Flow curve 27, in which case three cycles are shown. One

Primary volume flow 31 supplies via a plate heat exchanger 1 a

Heating circuit 33 and another two plate heat exchanger 1 a two-stage DHW heating with circulation, each as a secondary circuit 32, the primary volume flow 31 is passed from the heating circuit 33 in the drinking water heating to use the residual heat. Between the two plate heat exchangers 1 connecting pieces 6 are arranged, which partially according to the desired flow path barrier walls 26 have. For supplying and tapping the respective volume flows branches 11 are present in the connecting pieces.

In Figure 14d is an example of the schematic connection arrangement and

Connection arrangement of two plate heat exchangers 1 with exemplary

Flow curve 27, wherein for a circuit, the plate heat exchanger 1 are connected in parallel and for the other circuit, the plate heat exchanger 1 in series.

Between the two plate heat exchangers 1 connecting pieces 6 are arranged, which partially according to the desired flow path barrier walls 26 have. The connecting pieces 6 between the plate heat exchangers 1 can also be reduced to a very short length and form directly as a sealing washer 6 or partition 26. This creates a very compact arrangement with low space and piping requirements.

FIG. 14e shows the schematic connection arrangement and connection arrangement of four plate heat exchangers 1 with exemplary flow profile 27, wherein the four plate heat exchangers 1 are parallel, for example, on the primary side

are interconnected and are traversed by a primary flow 31. The respective secondary circuits 32 of the four plate heat exchangers 1 each form their own circuits, which are tapped or connected via branches 11 in the connecting pieces 6. The valves 7 in the branches 11 control the media flow individually per secondary circuit 32 as needed. The valves 7 can, as shown, also provide directly in the connecting pieces 6 and also control the

Media flow as needed. The arranged between the two plate heat exchangers 1 connectors

6 have according to the desired flow path barrier walls 26. This is the case in this example to form the independent secondary circuits 32.

FIG. 15 shows a connection arrangement of five plate heat exchangers 1 shown, which are arranged in alignment via connecting channels 3 and 4 connection openings. This allows different flow patterns through the

Realize plate heat exchanger 1. Between the connection openings 4 connectors 6 are present not shown. Visible is the diversity of the circuits and the variety of connection options of

Periphery, which result by means of the connection arrangement and connection arrangement according to the invention.

The connecting pieces 6 can each be carried out so that they on the

Connection side for j eweilige periphery are adapted to different connection systems. Thus, the connecting pieces 6 can be adapted to the

Provide connection systems from different manufacturers.

For static flow adjustment are the connector 6 or

Intermediate piece 10 partially or partially flowed through (not shown).

The connecting pieces 6 can be designed so that they protrude into the connection opening 4. This avoids that they are shifted so that it comes to leaks. The connectors

6 have for example a concentric shoulder in the axial course (not shown).

In particular, in Figures 16a to 16e are different exemplary

Versions of connecting pieces 6 and 9 clamping devices shown in detail in section. These embodiments can be used and combined independently of the previously described and shown exemplary embodiments. The combination of a concrete connecting piece 6 with respect to the connection opening 4 and with respect to the respectively shown clamping devices 9 and their components, such as plates 18 or plates 18, 23, screws 13 or threaded rods 13 with nuts 16 or cap nut 17 are exemplary and by no means limited to the respective illustrated embodiment. Rather, the clamping devices 9 and their components shown in each case also represent examples. Other clamping devices 9 and their components which fulfill the function and purpose are also included. Figure 16a shows an example of a sectional view of a connecting piece 6, in which the clamping device 9, comprising a threaded rod 13 and a nut 16, is arranged, wherein the threaded rod 13 is guided by a clamping web 24 with a bore 14.

The threaded rod 13 is guided through the, so within the respective or another other plate heat exchanger 1 to the opposite connecting piece 6 and can there also by a clamping web 24 within a

Connecting piece 6 or guided directly through the connector 6 and provided with a nut 16 or bolted to the clamping web 24 or the connecting piece 6 and be braced, as shown in Figures 6, 7 and 13.

The connecting piece 6 comprises at the end facing the outer plate 5 a seal 15 and lies on the surface of the outer plate 5, as

End plate 5 or end plate 5 on. Furthermore, a branch 11 is present.

Figure 16b shows an example of a sectional view of a connecting piece 6, in which the clamping device 9, comprising a plate 18, two threaded rods 13 and two nuts 16, is arranged, wherein the threaded rod 13 is guided through a bore 14 in the plate 18. The threaded rod 13 is as part of the clamping device 9 to the, that is outside of the respective or another another

Plate heat exchanger 1 out.

The threaded rod 13 is guided through the opposite plate 18 or to the edge of an unopened outer plate 22 and there provided with a nut 16 or with a fastener 21, such as a suitable nut 16 and screwed and braced so the connectors 6, as shown in 1 to 4 and 13, against the plate heat exchanger 1. The plate 18 has in this example an opening 34 through which the

Connector 6 is inserted. At the plate heat exchanger end of the

Connecting piece 6 is a circumferentially circumferential flange-like projection 30, which at the inserted or pushed into the opening 34

Connector 6 between the plate 18 and outer plate 5 is located and against which presses the plate 18 during clamping.

The illustrated connector 6 has on the front side, on

plate heat exchanger side end a reduced in the radial direction paragraph 28 which projects into the connection opening 4.

FIG. 16 c shows a connection piece 6 as a sectional view, which is arranged between two plate heat exchangers 1 and onto which two plates 18 are pushed as part of the tensioning device 9. At one

plate heat exchanger-side end is a flange 30 and the other

plate heat exchanger side end is guided in a groove 19 snap ring 20, which was used after both plates 18 were pushed onto the connecting piece 6. The clamping takes place as described above.

Alternatively, the opening 34 and the flange-like projection 30 have the

Complementary shape, for example, a bayonet 35. As a result, the flange-like projections 30 are present at the respective connecting piece 6 at both ends. The passage of the connecting piece 6 through the opening 34 is made possible by a rotation of the connecting piece 6. A corresponding plate 18 or a plate 18 and corresponding connecting pieces are shown in Figure 17 in plan view.

The connecting piece 6 shown as a sectional view in Figure 16c has at both ends, at the respective plate heat exchanger side end in the axial direction a stepped cone 29 which projects into the respective connection opening 4 in the outer plate 5.

The connecting pieces 6 are centered with the protruding into the connection opening 4 paragraph 28 or the cone 29 in the connection opening 4 or so arranged that they are displaceable with little play and yet close to or around the

Connection opening 4 abut.

The connecting pieces 6 have, as shown in Figure 16d as a sectional view, for example, an excess over the connection opening 4, which is so large that a displacement of the connecting pieces or 6 on the surface to the Connection opening 4 for position correction or to avoid stresses does not lead to leakage at the connection opening 4 and the seal 15 acts reliably.

As shown in Figure 16d, for example, a plate 18 as part of

Clamping device 9 is pushed through the opening 34 onto the connecting piece 6. On the connecting piece 6, a snap ring 20 is guided in a groove 19 in the region of the plate heat exchanger side end, against which the plate 18 abuts.

FIG. 16e shows, by way of example, a sectional view of a connecting piece 6, through which a threaded rod 13 is guided as part of the tensioning device 9, wherein the threaded rod 13 passes through a bore 14 on the closed one

plate heat exchanger side end is guided opposite end and is bolted to a cap nut 17 with a seal 15. The connecting piece 6 can be braced on or against the plate heat exchanger 1 as described above. The threaded rod 13 is for this, as described above, by the, ie within the respective or the other

Plate heat exchanger 1 to the opposite connector 6 out. The connecting piece 6 comprises at the end facing the outer plate 5 a seal 15 and lies on the surface of the outer plate 5, as

End plate 5 or end plate 5 on. The plate heat exchanger-side end has an axially projecting, reduced in diameter cylindrical shoulder 28, which merges into a cone 29.

Regardless of whether it has been illustrated or not, the connectors 6 may have one or more branches 11. For simplicity, however, this has been shown only partially and depends in each case on the required shading of the plate heat exchanger 1 and its periphery.

The connecting piece 6 and / or the intermediate piece 10 is also about the alignment of the connecting channels 3 and to the connection opening 4 about the axis of

Direction of flow can be arranged in any direction to achieve the best possible and simplest connection options for short and low-component connections. The Adaptation to the concentric connection opening 4 favors this.

In addition to the valves 7, as shown in Figures 9, 10 and 12, and the thread 8, as shown in Figures 11, 12 and 14, the connecting piece 6 and / or the intermediate piece 10 may comprise a filter and / or a pump (not shown).

For simplicity, two or more connectors 6 are configured as one connection block or as a connection assembly for two or more connection openings 4. This allows simplifications to be made to facilitate installation. In addition, functions can be integrated. Connecting block and the connection assembly can be made of injection molding, for example, plastic or metal (not shown).

Compilation of the reference numerals

1 - Plate heat exchanger

2 - Heat exchanger plate

3 - connecting channel

4 - connection opening

5 - outer plate, end plate, end plate

6 - Connector, sealing washer

7 - valve

8 - thread

9 - clamping device

10 - intermediate piece

1 1 - branch

12 - internal thread

13 - threaded rod, rod, screw

14 - Through hole, hole

15 - seal

16 - Mother

17 - cap nut

18 - sheet metal, plate

19 - groove

20 - snap ring

21 - fasteners

22 - unopened outer plate

23 - clamping plate

24 - clamping web

25 - blind closure, tail

26 - barrier wall, partition

27 - flow direction

28 - paragraph

29 - cone

30 - Flange, brim, flange overhang

31 - Primary volume flow

32 - secondary circuit - Heating circuit - opening

- bayonet

Claims

claims:

1. Connection arrangement and connection arrangement for connecting at least one plate heat exchanger (1) to at least one respective peripheral piping, wherein the plate heat exchanger (1) consists of soldered heat exchanger plates (2), the transversely to the heat exchanger plates (2) extending connecting channels (3) and in at least one outer plate (5) connecting openings (4) are present,

characterized,

in that at least one connecting piece (6) is arranged on the surface around the connecting opening (4) of the respective outer plate (5) in alignment with at least one of the connecting channels (3) or at least one of the connecting openings (4), the connecting piece (6 ) is clamped with or against the plate heat exchanger (1) by means of a clamping device (9).

2. Arrangement according to claim 1,

characterized,

in that at least one of heat exchangers (1) is connected between at least two plate heat exchangers (1) between the first and second or further plates

Connecting piece (6) is arranged, so that between the plate heat exchangers (1) in the alignment of at least one of the connecting channels (3) or at least one of the connection openings (4) of the plate heat exchanger (1) the at least one connecting piece (6) is arranged, wherein the at least one connecting piece (6) is placed on the surface around the connecting opening (4) of the respective outer plate (5) of the plates heat exchanger (1) and with or against at least one of the respective plate heat exchanger (1) by means of a clamping device (9) is tense.

3. Arrangement according to one of claims 1 and 2,

characterized,

in that the connecting piece (6) is designed in one or more parts and / or that at least one intermediate piece (10) is present between two connecting pieces (6) or two connecting piece parts (6).

4. Arrangement according to one of the preceding claims,

characterized,

that the connecting piece (6) or the intermediate piece (10) is not or at least partially or partially flowed through.

5. Arrangement according to one of the preceding claims,

characterized,

that the connecting piece (6) projects into the connection opening (4) or in the

Connection opening (4) is centered and / or an oversize relative to the

Connection opening (4) has.

6. Arrangement according to one of the preceding claims,

characterized,

in that the connecting piece (6) and / or the intermediate piece (10) has at least one branch (11).

7. Arrangement according to one of the preceding claims,

characterized,

that the connecting piece (6) and / or the intermediate piece (10) has a barrier wall (26) and / or partition wall (26) transversely and / or longitudinally for the escape of the connecting channels.

8. Arrangement according to one of the preceding claims,

characterized,

the connecting piece (6) and / or the intermediate piece (10) can be arranged to be twisted around the alignment of the connecting channels (3) or around the connection opening (4).

9. Arrangement according to one of the preceding claims,

characterized,

in that the connecting piece (6) and / or the intermediate piece (10) and / or the branch (11) comprises a valve (7), a filter, a thread (8) and / or a pump.

10. Arrangement according to one of the preceding claims,

characterized,

in that the connecting piece (6) is designed as an end piece (25) or as a blind closure piece (25).

11. Arrangement according to one of the preceding claims,

characterized,

that the connecting piece (6) and / or the intermediate piece comprises at least one seal (15) and / or that the connecting piece (6) is designed as a sealing washer (6).

12. Arrangement according to one of the preceding claims,

characterized,

in that two or more connection pieces (6) are designed as a connection block or as a connection assembly for two or more connection openings (4).

13. Arrangement according to one of the preceding claims,

characterized,

in that the tensioning device is arranged outside and / or inside the plate heat exchanger (1).

14. Arrangement according to one of the preceding claims,

characterized,

that the at least one connecting piece (6) with the or

Plate heat exchangers (1) is clamped as a package.

15. Arrangement according to one of the preceding claims,

characterized,

that the at least one connecting piece (6) with or against the at least one plate heat exchanger (1) with at least one of the at least one

Plate heat exchanger (1) and / or the at least one connecting piece (6) and / or engaging behind clamping device (9) is clamped.

16. Arrangement according to one of the preceding claims,

characterized,

in that the at least one connecting piece (6) and / or the one or more

Plate heat exchanger (1) with a through the connection opening (4) and the

Connecting channel (3) guided tensioning device (9) is braced.

17. Arrangement according to one of the preceding claims,

characterized,

the tensioning device (9) is screwed or braced with the at least one connecting piece (6) and / or guided through the connecting piece (6).

18. Arrangement according to one of the preceding claims,

characterized,

in that the tensioning device (9) comprises at least metal sheets or plates (18, 23) and / or screws (13) or threaded rods (13) with nuts (16, 17).

19. Arrangement according to one of the preceding claims,

characterized,

that the at least one connecting piece (6) on the outer wall in the circumferential direction at least partially at least one radial projection, for example in the form of a brim (30), a flange (30), a flange-like projection 30, a bayonet (35) and / or a snap ring (20), guided in a groove (19), comprises or that within the connecting piece (6) at least one clamping web (24) is present.