DE102024100232A1 - Connection set for heat and/or cold generators, especially heat pumps, as well as multiple pipe systems - Google Patents

Abstract

The present disclosure relates to a connection set (1) for heat and/or cold generators (200), in particular heat pumps. The connection set (1) has a plurality of line pipes (10, 10'), a jacket pipe (20) for enclosing the line pipes (10, 10') and two end pieces (30, 30') for closing the end of the jacket pipe (20). In the connection set (1), the end pieces (30, 30') have at least one, preferably a plurality of through openings (31, 32) for passing through the line pipes (30, 30') and at least one of the end pieces (30, 30') has a circumference (33) surrounding the through openings (31, 32) and running around an axis (A) and is designed to be inserted axially with respect to the axis (A) into the jacket pipe (20). The present disclosure further relates to a multiple pipe system (100) for connecting a heat and/or cold generator (200) and to an arrangement with a heat and/or cold generator (200), a consumption system and such a multiple pipe system (100).

Description

The present disclosure relates to a connection set for heat and/or cold generators, in particular heat pumps. The present disclosure further relates to a multiple pipe system for connecting a heat and/or cold generator, preferably assembled with the components of the connection set. In addition, the present disclosure relates to an arrangement with a heat and/or cold generator, a consumption system and such a multiple pipe system.

Heat and/or cold generators, such as heat pumps, enable buildings to be heated or cooled and/or process heat to be provided. The heat and/or cold generators are increasingly located outside the building in which the heat provided is used. For efficiency reasons, the heat and/or cold generators or at least individual units thereof are then installed outdoors, for example. With such an installation, the heat and/or cold generators or the outdoor units are usually connected to the fluid via fluid lines that are laid in the building in order to be connected to a consumption system there.

In order to facilitate the fluid connection, the approach of bundling the fluid lines in a common jacket pipe is increasingly being pursued. This reduces the installation of the fluid lines to the installation of one jacket pipe with the fluid lines contained therein. The jacket pipe is often used in addition to achieve an electrical connection by carrying electrical power lines in it.

In the course of continuous development, there may be a need to optimize the approach described above.

According to one aspect, a connection set for heat and/or cold generators, in particular heat pumps, is proposed. The connection set comprises several line pipes and a jacket pipe, in particular a single jacket pipe, for enclosing the line pipes.

The line pipes can be medium pipes, for example medium pipes for flow and return. In the present disclosure, the term "medium pipe" is understood to mean a pipe that is suitable for passing through a gaseous medium and/or a liquid medium and/or a vaporous medium. The line pipes can also be empty pipes into which, for example, electrical power cables and/or electrical control cables can be passed or accommodated. In principle, the line pipes can also be electrical power cables and/or electrical control cables or other electrical lines. In this case, the line pipes form the electrical cables or electrical lines themselves, without an empty pipe being present.

A fundamental optimization is offered by an embodiment of the connection set in which two end pieces are included for closing the jacket pipe at the end and the end pieces include at least one, preferably several through-openings for the pipes to pass through. The end pieces can be used to perform a blocking function from the outside to the inside of the jacket pipe and/or vice versa from the inside of the jacket pipe to the outside when the components of the connection set are assembled. This blocking function helps protect the inside of the jacket pipe from unwanted external influences, such as mechanical influences. The end pieces also counteract an unwanted flow of substances or materials through the jacket pipe, i.e. a flow through the jacket pipe outside the pipes.

The term "multiple through-openings" in the present disclosure means that at least two through-openings are provided. The through-openings are preferably located at a radial distance from one another. The multiple through-openings can be designed to pass through a single or multiple line pipes. If only a single through-opening is provided, the through-opening is designed, for example, to pass through the multiple line pipes.

A further optimization is provided by an embodiment of the connection set in which at least one of the end pieces has a circumference surrounding the through openings and running around an axis and is designed to be pushed axially into the casing pipe with respect to the axis. This facilitates easier assembly, since the at least one end piece can be brought into its final position by simply pushing it into the casing pipe.

In particular, the circumference of the at least one end piece has a contour, i.e. a circumferential contour, which corresponds or substantially corresponds to the contour of the inner circumference of the casing pipe. This promotes the above-described blocking effect of the at least one end piece in the installed state. on the casing pipe, since the casing pipe can be completely or at least largely completely closed by the circumferential contour of the at least one end piece. The circumferential contour of the at least one end piece is arranged relative to the contour of the inner circumference of the casing pipe in such a way that the at least one end piece can still be pushed into the casing pipe.

In particular, the circumference of the at least one end piece extends in the axial direction with respect to the axis over a length section which corresponds to an axial length section of the inner circumference of the casing tube. This measure also aims to enable the at least one end piece to be pushed into the casing tube on the one hand and to promote the locking effect of the at least one end piece on the other hand when the at least one end piece is pushed into the casing tube.

A further optimization is provided by an embodiment of the connection set in which the at least one end piece is assigned a surface section that can be used as a depth stop. This makes it easier to assemble the at least one end piece with the casing pipe in that the insertion depth of the at least one end piece is determined by the surface section and thus an assembly person does not need to position the at least one end piece in the casing pipe. In particular, the surface section is arranged on the at least one end piece, for example fastened to it.

In the present disclosure, the term "depth stop" is to be understood as meaning that the surface section limits the insertion depth of the at least one end piece into the casing pipe. In order to achieve a desired insertion depth, the surface section is arranged, for example, at a predetermined distance from a side of the at least one end piece that has the through openings.

In one possible embodiment, it is provided that, viewed in the radial direction with respect to the axis, the surface section projects outward beyond the circumference of the at least one end piece. For example, it is provided that, viewed in the radial direction with respect to the axis, the surface section projects beyond the circumference of the at least one end piece in such a way that, starting from a radial end of the surface section, the radial width of the at least one end piece is greater than the radial width of the inner circumference of the casing tube.

This makes it possible to achieve an external depth stop. In the present disclosure, this means that the insertion depth of the at least one end piece in the casing pipe is limited by the surface section acting against an external section of the casing pipe, such as its front edge.

The surface section can be formed on one leg of an L-shaped material strip, the other leg of which extends with its longitudinal extension in the axial direction with respect to the axis to the side with the through openings. This makes it possible to produce the surface section cost-effectively. For example, the material strip is a sheet metal strip. For example, the material strip is formed into its L-shape by forming. These measures also promote cost-effective production of the surface section.

In principle, the material strip can have a further leg, which gives the material strip a Z-shape. In this case, the material strip can be attached to the side with the through-openings via the further leg, for example by screwing.

It is advisable for the material strip to be provided at least twice. In this case, the material strips can be attached to the side of the at least one end piece that has the through-openings, preferably distributed over the circumference, for example opposite one another, so that the surface section of the respective material strip projects radially beyond the circumference or the peripheral edge of the at least one end piece.

The multiple material strips prevent the at least one end piece from becoming undesirably inclined or slanted in the casing pipe when the at least one end piece is inserted to the predetermined insertion depth. It is also easier for an assembly worker to install the at least one end piece in the casing pipe.

A further optimization is provided by an embodiment of the connection set in which the at least one end piece has an elastomer body and a clamping device and the clamping device is in particular designed to clamp the elastomer body in such a way that it is compressed axially with respect to the axis and consequently expands radially with respect to the axis or widens outwards and inwards. This enables a tight, in particular fluid-tight connection between at least one end piece and the inner circumference of the jacket pipe.

It is advisable for the through-openings to extend through the elastomer body. This makes it possible to achieve a tight, in particular fluid-tight, connection between the at least one end piece and the line pipes, which extend through the through-openings in the assembled state.

The elastomer body and the clamping device can therefore be used to create a gas-tight and/or liquid-tight barrier. In this respect, a sealing barrier for the interior of the jacket pipe can be achieved by means of at least one end piece. This counteracts or even prevents any leakage of coolant, for example from the heat and/or cold generator, from flowing through the jacket pipe into a building connected to it when the connection set is assembled. A possible overflow of radon as a possible component of the coolant used, such as propane, is prevented in this way.

A further optimization is offered by an embodiment of the connection set in which at least one of the through-openings of the at least one end piece has an elastomer sleeve in the area of the elastomer body. This enables the at least one through-opening to be adapted to line pipes with different diameters. The elastomer sleeve serves as an adapter to fill the space between the inner circumference of the at least one through-opening and the outer circumference of the line pipe accommodated therein.

The elastomeric property of the elastomer sleeve ensures that the forces exerted by the elastomer body are transferred in a radial direction from the elastomer sleeve to the line pipe by the elastomer sleeve deforming accordingly. This means that even when a line pipe with a smaller diameter is used, a tight connection can be achieved between the line pipe and at least one end piece via the elastomer sleeve.

The elastomer sleeve can have a preferably continuous incision running in the direction of its longitudinal extension. This makes it easier to install the elastomer sleeve on the pipe, since an installer only needs to push the elastomer sleeve over the incision onto the pipe lengthwise and the installer can then insert the pipe together with the elastomer sleeve into the at least one through-opening.

In order to seal pipes with a significantly smaller diameter, several elastomer sleeves can be provided. For example, it can be provided that at least one of the through-openings in the area of the elastomer body has the several elastomer sleeves, which are concentric around the opening axis of the at least one through-opening. As a result, the elastomer sleeves are arranged in a kind of onion-skin arrangement relative to one another. The several elastomer sleeves can also have a preferably continuous incision running in the direction of their longitudinal extension. This results in the advantage during assembly already described above.

A plug can be formed by the one elastomer sleeve or the multiple elastomer sleeves, which closes the at least one through-opening, in particular closes it completely. As a result, the elastomer body can also carry out its radial expansion in the area of the at least one through-opening without disruption if no conduit is accommodated in the at least one through-opening, since the at least one through-opening is closed by the one elastomer sleeve or the multiple elastomer sleeves.

For example, the elastomer body is cylindrical and its central axis is coaxial with the axis of the at least one end piece. For example, the elastomer body has or consists of a rubber-elastic material. For example, the at least one elastomer sleeve has or consists of a rubber-elastic material. For example, the rubber-elastic material is ethylene-propylene-diene rubber (EPDM).

In one possible embodiment, the clamping device comprises two flange disks through which the through openings extend. In particular, the clamping device further comprises a plurality of clamping bolts. In this embodiment, for example, the elastomer body is arranged between the flange disks and the clamping bolts serve to clamp the flange disks against each other. This embodiment facilitates a technically simple implementation.

In a further embodiment, the connection set has at least one further line pipe and the jacket pipe is designed or suitable for enclosing the line pipes and the at least one further line pipe. In this case, the end pieces can have at least one further through-opening which is used to pass through the at least one further line pipe. The at least one further line pipe can be designed in accordance with at least one of the line pipes described above.

It is advisable for the two end pieces to be of the same design, for example identical parts. This measure makes it easier to assemble the end pieces with the casing pipe and prevents possible incorrect assembly. It also facilitates cost-effective production, as only end pieces of the same type need to be manufactured.

It is advisable for the line pipes and the jacket pipe to be one flexible pipe. This makes it easier to lay a connecting pipe assembled from the connection set, as the entire system is flexible as such and can be adapted to any given laying path.

For example, the pipes are designed as corrugated pipes. The pipes can be metal pipes. In principle, the pipes can also be plastic pipes. The decisive factor is that the pipes have or consist of a suitable material for their intended purpose. The jacket pipe can also be a corrugated pipe. The jacket pipe can also be a metal pipe or a plastic pipe.

According to a further aspect, a multiple pipe system is proposed for connecting a heat and/or cold generator, such as a heat pump. The multiple pipe system is preferably formed by the connection set described above or assembled with the components of the connection set described above. The multiple pipe system comprises several line pipes and a jacket pipe which encases the line pipes.

In one embodiment, the multiple pipe system has two end pieces, by means of which the jacket pipe is closed at the end, wherein the end pieces have at least one, preferably several through-openings through which the line pipes extend. In this embodiment, it can be provided that at least one of the end pieces has a circumference surrounding the through-openings and running around an axis and is inserted axially with respect to the axis into the jacket pipe.

In the present disclosure, the term "closed at the end" is to be understood to mean that the end piece can also be arranged at an axial distance from the associated end of the jacket pipe, i.e. can be at an axial distance from the associated end in the direction of the opposite end of the jacket pipe. For example, the end pieces are at an axial distance from one another or the end pieces are arranged in the region of a respective axial end of the jacket pipe.

In a further embodiment, the at least one end piece is assigned a surface section which acts as an external depth stop against the front edge of the casing pipe and limits the insertion depth of the at least one end piece in the casing pipe.

In a further embodiment, the at least one end piece has an elastomer body through which the line pipes extend. In this case, the at least one end piece can have a tensioning device by means of which the elastomer body is compressed axially with respect to the axis to such an extent that it is pressed sealingly against the inner circumference of the jacket pipe and against the line pipes.

With regard to the advantages resulting from the embodiments of the multiple pipe system, reference is made to the advantages of the connection set described above, which also result for the multiple pipe system.

According to a further aspect, an arrangement is proposed which comprises a heat and/or cold generator, a consumption system and the proposed multiple pipe system. In this arrangement, the heat and/or cold generator is fluidically connected to the consumption system by the multiple pipe system. The heat and/or cold generator can be a heat pump. The heat pump can be a monoblock heat pump or a split heat pump. The consumption system can be a building heating system and/or a domestic water system.

• 1 eine exemplarische Ausführungsform eines Mehrfachrohrsystems in einer perspektivischen Darstellung eines Längenabschnitts,
• 2 eine Einbauanordnung des exemplarischen Mehrfachrohrsystems der 1 bei einer Verwendung des Mehrfachrohrsystems zum Anschluss eines außenliegenden Wärme- und/oder Kälteerzeugers an eine in einem Gebäude liegenden Inneneinheit mit einer Veranschaulichung der Bestandteile des Mehrfachrohrsystems,
• 3 eine weitere exemplarische Ausführungsform eines Mehrfachrohrsystems in einer perspektivischen Darstellung eines Längenabschnitts und dargestellt in einer Einbauanordnung an einer Gebäudewand,
• 4 eine nochmals weitere exemplarische Ausführungsform eines Mehrfachrohrsystems in einer Explosionsdarstellung,
• 5 eine exemplarische Ausführungsform eines Abschlussstücks für ein Mehrfachrohrsystem, wie beispielsweise das Mehrfachrohrsystem der 1, in einer perspektivischen Darstellung,
• 6 das exemplarische Abschlussstück der 5 in einer Vorderansicht,
• 7 das exemplarische Abschlussstück der 5 in einer Seitenansicht,
• 8 ein Elastomerkörper des exemplarischen Abschlussstücks der 5 in einer Vorderansicht,
• 9 ein Elastomerkörper des exemplarischen Abschlussstücks der 5 in einer Seitenansicht,
• 10 das exemplarische Abschlussstück der 5 mit mehreren Elastomerhülsen als Adapter zwischen einem Durchgangsloch in dem Abschlussstück und einem darin aufgenommenen Leitungsrohr, und
• 11A bis 11D verschiedene Montageschritte zur Montage der Elastomerhülsen auf das Leitungsrohr, um anschließend die Einheit aus dem Leitungsrohr und den Elastomerhülsen in das Durchgangsloch des exemplarischen Abschlussstücks der 10 einzubringen.

Further details and features emerge from the following description of several embodiments based on the drawing.

• 1 an exemplary embodiment of a multiple pipe system in a perspective view of a length section,
• 2 an installation arrangement of the exemplary multiple pipe system of the 1 When using the multiple pipe system to connect an external heat and/or chiller to an indoor unit located in a building with an illustration of the components of the multiple pipe system,
• 3 another exemplary embodiment of a multiple pipe system in a perspective view of a length section and shown in an installation arrangement on a building wall,
• 4 yet another exemplary embodiment of a multiple pipe system in an exploded view,
• 5 an exemplary embodiment of a termination piece for a multiple pipe system, such as the multiple pipe system of 1 , in a perspective view,
• 6 the exemplary final piece of the 5 in a front view,
• 7 the exemplary final piece of the 5 in a side view,
• 8th an elastomer body of the exemplary end piece of the 5 in a front view,
• 9 an elastomer body of the exemplary end piece of the 5 in a side view,
• 10 the exemplary final piece of the 5 with several elastomer sleeves as adapters between a through hole in the end piece and a pipe accommodated therein, and
• 11A to 11D various assembly steps for mounting the elastomer sleeves on the pipe, in order to then insert the unit consisting of the pipe and the elastomer sleeves into the through hole of the exemplary end piece of the 10 to contribute.

1 shows an exemplary embodiment of a multiple pipe system 100, which has several line pipes 10, 10' and a jacket pipe 20 enveloping the line pipes 10, 10'.

2 shows an example of a possible application of the exemplary multiple pipe system 100. The exemplary multiple pipe system 100 is used in this application for the hydraulic connection of an external heat and/or cold generator 200, such as a heat pump. The heat and/or cold generator 200 can be used for the hydraulic connection to a heating system located in a building 300 (in the 2 not shown) indoor unit, such as a heating circuit system. The heat and/or cold generator 200 is set up, for example, outdoors or in the outdoor area 400. The hydraulic connection via the multiple pipe system 100 is made through a wall opening in a building wall 310, through which the multiple pipe system 100 is laid into the building 300.

In the 2 the components of the multiple pipe system 100 are shown separately and indicate the respective position in or on the multiple pipe system 100 by dashed arrows. For a better understanding of the structure of the multiple pipe system 100, 3 and 4 be used to determine which modifications to the design in the 1 and 2 show. In addition, 5 to 9 which show individual components of the multiple pipe system 100 in different views.

As from the 2 As can be seen, the line pipes 10, 10' can be used to conduct a liquid heat transfer medium. The line pipes 10, 10' can have an insulating sleeve 13 for heat insulation. For connection, connection screw connections 11, 11' can be provided at the ends of the line pipes 10, 10'. For example, the line pipes 10, 10' are each a corrugated pipe, in particular a metallic corrugated pipe, such as a corrugated pipe made of stainless steel. The jacket pipe 20 can also be a corrugated pipe. For example, the jacket pipe 20 is a plastic pipe.

As can be seen in particular from the 1 and 2 As can be seen, the exemplary multiple pipe system 100 has two end pieces 30, 30'. Preferably, the jacket pipe 100 is closed by the end pieces 30, 30', in particular closed at the end. Preferably, the end pieces 30, 30' have several through holes 31, 32 through which the line pipes 10, 10' extend (see, for example, 1 and 4 ).

Preferably, the end pieces 30, 30' have a circumference 33 surrounding the through openings 31, 32 and extending around an axis A (see, for example, 5 ). Preferably, at least one of the end pieces 30, 30' is inserted axially with respect to the axis A into the casing tube 20 (see, for example, 1 ). For example, both end pieces 30, 30' are inserted axially with respect to the axis A into the casing tube 20.

The possible design of the end pieces 30, 30' is described below using the example of the end piece 30. In principle, both end pieces 30, 30' can be designed in an identical manner.

Preferably, the circumference 33 of the end piece 30, i.e. the circumferential outer side of the end piece 30, has a contour which corresponds or substantially corresponds to the contour of the inner circumference or the inner side of the casing tube 20. Preferably, the circumference 33 of the end piece 30 extends in the axial direction with respect to the axis A over a length section which corresponds or substantially corresponds to an axial length section of the inner circumference of the casing tube 20.

For example, the jacket tube 20 has a round, in particular circular, circumferential contour. In this case, the contour of the circumference 33 of the end piece 30 is preferably also round, in particular circular. In principle, square circumferential contours are also possible.

As from the 1 As can be seen, the multiple pipe system 100 can have a surface section 40 which acts as an external depth stop against the front edge 25 of the casing pipe 20 and thus limits the insertion depth of the end piece 30 in the casing pipe 20. Preferably, the surface section 40 is arranged at a predetermined distance S from a side 34 of the end piece 30 having the through openings 31, 32 (see, for example, 1 and 7 ).

Preferably, it is provided that, viewed in the radial direction with respect to the axis A, the surface portion 40 projects outwardly beyond the circumference 33 of the end piece 30 (see, for example, 7 ). The surface section 40 can, viewed in the radial direction with respect to the axis A, project beyond the circumference 33 of the end piece 30 such that, starting from a radial end 41 of the surface section 40, the radial width of the at least one end piece 30 is greater than the radial width of the inner circumference of the casing tube 20.

The surface section 40 can be formed on a leg 43 of an L-shaped material strip 42, the other leg 44 of which extends with its longitudinal extent in the axial direction with respect to the axis A to the side 34 with the through openings 31, 32. The material strip 42 is, for example, formed in the shape of a tab. The material strip 42 can be a sheet metal strip. For example, the L-shape of the material strip 42 is formed by bending. The material strip 42 can be fastened to the side 34, for example by welding or screwing. For this purpose, a further leg 45 can be provided, through which the material strip 42 is in a Z-shape. The further leg 45 can rest against the side 34 and the fastening to the side 34 can be realized via this.

Preferably, the material strip 42 is provided at least twice and the material strips 42 are each attached to the side 34. Preferably, the surface section 40 of the respective material strip 42 is arranged such that it radially projects beyond the circumference 33 of the end piece 30. Preferably, the material strips 42 are arranged opposite one another in the radial direction.

Preferably, the end piece 30 comprises an elastomer body 50 through which the conduits 10, 10' extend (see, for example, 1 and 5 ). Preferably, the end piece 30 further comprises a clamping device 60 which is designed to clamp the elastomer body 50 in such a way that it is compressed axially with respect to the axis A and consequently expands radially with respect to the axis A, in particular outwards and inwards (see, for example, 7 ). In the 1 For example, the clamped state is visible. The clamping device 60 compresses the elastomer body 50 axially with respect to the axis A to such an extent that it is pressed sealingly against the inner circumference of the jacket pipe 20 and against the line pipes 10, 10'.

In order to achieve axial compression of the elastomer body 50, the clamping device 60 can comprise two flange disks 61, 62 and a plurality of clamping bolts 63 (see 6 and 7 ). The through openings 31, 32 preferably extend through the two flange disks 61, 62. The elastomer body 50 is preferably arranged between the flange disks 61, 62 and the clamping bolts 63 serve to clamp the flange disks 61, 62 against one another. One of the flange disks 61, 62, in particular the flange disk 61, is preferably assigned to the side 34. The material strip 42 is preferably fastened to the flange disk 61, for example via one of the clamping bolts 63. The other of the flange disks 61, 62, in particular the flange disk 62, is preferably assigned to the opposite side 35.

The clamping bolts 63 can be fastened with a longitudinal end to one of the flange disks 61, 62, for example the flange disk 62, in particular screwed in or welded on. For example, the clamping bolts 63 are designed as threaded bolts. For example, the clamping bolts 63 extend with the other longitudinal end through through holes in the other flange disk 61 and at least one nut element is screwed onto the other longitudinal end. By screwing the nut element against the other flange disk 61, an axial clamping force is generated which acts via the flange disks 61, 62 on the elastomer body 50 and causes its desired deformation.

The multiple pipe system 100 can comprise at least one further pipe 12. In this case, the jacket pipe 20 is suitable for enclosing the pipes 10, 10' and the at least one further pipe 12 and the end pieces 30, 30' have at least one further through-opening 36 which is suitable for passing through the at least one further pipe 12. The 3 shows the at least one further conduit 12 using the example of a modified embodiment of a multiple pipe system 100'. There, the at least one further conduit 12 is, for example, an electrical power line.

The 4 shows by way of example that the at least one further conduit pipe can be an empty pipe 12'. The 4 The exploded view shown indicates the components underlying the multiple pipe system 100, which can form a connection set 1, for example in the form of a kit. The connection set 1 comprises at least the line pipes 10, 10', the jacket pipe 20 and the two end pieces 30, 30'.

The 8th and 9 show an example of the elastomer body 50 in a front view ( 8th ) and a side view ( 9 ). The elastomer body 50 is preferably cylindrical. The central axis of the elastomer body 50 preferably lies on the axis A of the end piece 30. The through openings 31, 32 preferably pass through the elastomer body 50. For this purpose, the elastomer body 50 has corresponding through holes 50.1. Preferably, the at least one through opening 36 also passes through the elastomer body 50. For this purpose, the elastomer body 50 has a corresponding through hole 50.2. In addition, the elastomer body preferably has further through holes 50.3 in order to be able to insert the clamping bolts 63.

As can be seen from the 1 and 2 As can be seen, the jacket tube 20 can have a support ring 22 in the region of its longitudinal ends, preferably in the axial region of the arrangement of the end pieces 30, 30', which surrounds the jacket tube 20 on the outer circumference. For the passage through the wall opening, i.e. the wall passage, at least one ring closure 23 or 24 can be provided, which is between the jacket tube 20 and a (in the 1 and 2 not shown) casing pipe is arranged in the building wall 310 in order to seal against the jacket pipe 20 on the one hand and against the casing pipe on the other hand.

As from 10 As can be seen, at least one of the through openings 31, 32, 36, for example the through opening 36, can have a plurality of elastomer sleeves 51, 52, 53 in the region of the elastomer body 50, which are arranged concentrically around the opening axis 54 of the through opening 36. The elastomer sleeves 51, 52, 53 can each have a notch 51.1, 52.1, 53.1 running in the direction of their longitudinal extension, for example a continuous notch. The elastomer sleeves 51, 52, 53 make it possible to adapt the through opening 36 to the conduit 12 if the conduit 12 is significantly smaller in diameter than the through opening 36. The elastomer sleeves 51, 52, 53 serve as adapters to fill the space between the inner circumference of the through-opening 36 and the outer circumference of the conduit 12 accommodated therein.

11A to 11D illustrate by way of example an assembly of the elastomer sleeves 51, 52, 53 via their respective incisions 51.1, 52.1, 53.1 on the existing line pipe 12. Due to the concentric arrangement of the elastomer sleeves 51, 52, 53, a flexible adjustment of the diameter can be achieved, for example by omitting at least one or more of the elastomer sleeves 51, 52, 53.

The multiple pipe system 100 can be used to achieve a gas- and watertight seal between the casing pipe 20 and the pipes 10, 10' guided therein by means of the end pieces 30, 30'. This prevents moisture or coolant from penetrating the building 300 in the event of a possible leak. The insertion depth of the respective end pieces 30 or 30' is predetermined by the at least one material strip 42 and facilitates assembly, since the material strip 42 forms an external depth stop relative to the casing pipe 42.

List of reference symbols

1

Connection set

10, 10'

Pipe

11, 11'

Connection screw

12

additional pipe

12'

Empty pipe

13

Insulating cover

20

Jacket pipe

22

Support ring

23

Ring closure

24

Ring closure

25

Border

30, 30'

Final piece

31

Passage opening

32

Passage opening

33

Scope

34

Page

35

Page

36

further passage opening

40

Area section

41

radial end

42

Material strips

43

leg

44

leg

45

further leg

50

Elastomer body

50.1

Through hole

50.2

Through hole

50.3

Through hole

51

Elastomer sleeve

51.1

incision

52

Elastomer sleeve

52.1

incision

53

Elastomer sleeve

53.1

incision

54

Opening axis

60

Clamping device

61

Flange disc

62

Flange disc

63

Clamping bolt

100

Multiple pipe system

100'

Multiple pipe system

200

Heat and/or cold generators

300

Building

310

Building wall

400

Outdoor area

A

axis

S

predetermined distance

Claims (24)

Connection set (1) for heat and/or cold generators (200), in particular heat pumps, comprising • several pipes (10, 10'), • a jacket pipe (20) for enclosing the pipes (10, 10') and • two end pieces (30, 30') for closing the end of the jacket pipe (20), wherein the end pieces (30, 30') comprise at least one, preferably several through openings (31, 32) for passing through the pipes (10, 10') and at least one of the end pieces (30, 30') has a circumference (33) surrounding the through openings (31, 32) and running around an axis (A) and is designed to be inserted axially with respect to the axis (A) into the jacket pipe (20). Connection set according to Claim 1 , wherein the circumference (33) of the at least one end piece (30) has a contour which corresponds to the contour of the inner circumference of the jacket tube (20). Connection set according to Claim 1 or 2 , wherein the circumference (33) of the at least one end piece (30) extends in the axial direction with respect to the axis (A) over a length section which corresponds to an axial length section of the inner circumference of the jacket tube (20). Connection set according to one of the preceding claims, wherein the at least one end piece (30) is assigned a surface section (40) that can be used as a depth stop. Connection set according to Claim 4 , wherein the surface portion (40) is arranged at a predetermined distance (S) from a side (34) of the at least one end piece (30) having the through openings (31, 32). Connection set according to Claim 4 or 5 , wherein the surface portion (40), viewed in the radial direction with respect to the axis (A), projects outwardly beyond the circumference (33) of the at least one end piece (30). Connection set according to one of the Claims 4 until 6 , wherein the surface portion (40), viewed in the radial direction with respect to the axis (A), projects beyond the circumference (33) of the at least one end piece (30) such that, starting from a radial end (41) of the surface portion (40), the radial width of the at least one end piece (30) is greater than the radial width of the inner circumference of the casing tube (20). Connection set according to one of the Claims 5 until 7 , wherein the surface portion (40) is formed on one leg (43) of an L-shaped material strip (42), the other leg (44) of which extends with its longitudinal extent in the axial direction with respect to the axis (A) towards the side (34) with the through openings (31, 32). Connection set according to Claim 8 , wherein the material strip (42) has a further leg (45) by means of which the material strip (42) is in a Z-shape, wherein the material strip (42) is fastened via the further leg (45) to the side (34) having the through openings (31, 32), for example by screwing. Connection set according to Claim 8 or 9 , wherein the material strip (42) is provided at least twice and the material strips (42), preferably distributed over the circumference (33), in particular opposite one another, are attached to the side (34) and the surface section (40) of the respective material strip (42) projects radially beyond the circumference (33) of the at least one end piece (30). Connection set according to one of the preceding claims, wherein the at least one end piece (30) has an elastomer body (50) and a clamping device (60), and the clamping device (60) is designed to clamp the elastomer body (50) such that it is compressed axially with respect to the axis (A) and consequently expands radially outwards and inwards with respect to the axis (A). Connection set according to Claim 11 , wherein the through openings (31, 32) extend through the elastomer body (50). Connection set according to Claim 12 , wherein at least one of the through openings (31, 32) in the region of the elastomer body (50) has an elastomer sleeve (51) with a preferably continuous incision (51.1) running in the direction of its longitudinal extension. Connection set according to Claim 12 or 13 , wherein at least one of the through openings (31, 32) in the region of the elastomer body (50) has a plurality of elastomer sleeves (51, 52, 53) arranged concentrically around the opening axis (54), and the elastomer sleeves (51, 52, 53) have a preferably continuous incision (51.1, 52.1, 53.1) running in the direction of their longitudinal extension. Connection set according to one of the Claims 11 until 14 , wherein the elastomer body (50) is cylindrical and its central axis is coaxial with the axis (A). Connection set according to one of the Claims 11 until 15 , the clamping device (60) comprising two flange disks (61, 62) through which the through openings (31, 32) extend, and a plurality of clamping bolts (63), wherein the elastomer body (50) is arranged between the flange disks (61, 62) and the clamping bolts (63) serve to clamp the flange disks (61, 62) against one another. Connection set according to one of the preceding claims, comprising at least one further line pipe (12), wherein the jacket pipe (20) is suitable for enveloping the line pipes (10, 10') and the at least one further line pipe (12) and the end pieces (30, 30') have at least one further through-opening (36) which is suitable for passing through the at least one further line pipe (12). Connection set according to one of the preceding claims, wherein the two end pieces (30, 30') are of the same type. Connection set according to one of the preceding claims, wherein the line pipes (10, 10') are designed as corrugated pipes. Connection set according to one of the preceding claims, wherein the jacket pipe (20) is a corrugated pipe. Multiple pipe system (100) for connecting a heat and/or cold generator (200), preferably assembled with the components of the connection set (1) according to one of the preceding claims, comprising • several line pipes (10, 10'), • a jacket pipe (20) which encloses the line pipes (10, 10'), and • two end pieces (30, 30') by which the jacket pipe (20) is closed at the end, wherein the end pieces (30, 30') comprise at least one, preferably several through openings (31, 32) through which the line pipes (10, 10') extend, wherein at least one of the end pieces (30, 30') has a circumference (33) surrounding the through openings (31, 32) and running around an axis (A) and is inserted axially with respect to the axis (A) into the jacket pipe (20). Multiple pipe system according to Claim 21 , wherein the at least one end piece (30) is assigned a surface section (40) which acts as an external depth stop against the front side edge (25) of the casing tube (20) and limits the insertion depth of the at least one end piece (30) in the casing tube (20). Multiple pipe system according to Claim 21 or 22 , wherein the at least one end piece (30) has an elastomer body (50) through which the line pipes (10, 10') extend, and wherein the at least one end piece (30) has a tensioning device (60) by means of which the elastomer body (50) is compressed axially with respect to the axis (A) to such an extent that it is pressed sealingly against the inner circumference of the jacket pipe (20) and against the line pipes (10, 10'). Arrangement with a heat and/or cold generator (200), a consumption system and a multiple pipe system (100) according to one of the Claims 21 until 23 through which the heat and/or cold generator (200) is fluidically connected to the consumption system.

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