Heat exchanger wall penetration, relevant molded part and use

Abstract

Heat exchanger wall penetration (2, 102) for above-ground installation of a heat exchanger system (4) with multiple pipes (6), wherein the wall penetration (2) is designed to allow the pipes (6) to pass through an opening (10) of a wall section (8), wherein the wall penetration (2) has: - a molded part (12) which can be inserted into the opening (10), wherein the molded part (12) has a base body (14) with a first end section (16) and an opposing second end section (18), and wherein the base body (14) has at least two conduit passages (20, 21) extending from the first end section (16) to the second end section (18), which are designed to each accommodate a conduit (6) of the heat exchanger system (4), - a closure unit (22) which is designed to be installed on the wall section (8) wherein the closure unit (22) has passages (24) for the lines (6) to be routed through the wall penetration (2), wherein the molded part (12) is formed from a foamed or expanded material (28), characterized in that the molded part (112) has at least two subsections (164, 166) which divide the molded part (112) along its longitudinal axis.

Description

[0001] The invention relates to a heat exchanger wall penetration for the above-ground installation of a heat exchanger system with multiple pipes, wherein the wall penetration is designed to allow the pipes of the heat exchanger system to pass through an opening in a wall section. The pipes can be heat-carrying fluid pipes or also power or data pipes of the heat exchanger system.

[0002] According to the invention, the term "heat exchanger system" encompasses air conditioning systems that generate a cooling effect inside the building, and heating systems, in particular heat pump systems, that generate a heating effect inside the building. The term "heat exchanger system" also includes district heating, long-distance heating, geothermal heating, and solar thermal systems.

[0003] The heat exchanger wall penetration according to the invention is suitable for wall penetrations for the above-ground installation of a heat exchanger system with multiple pipes. However, the heat exchanger wall penetration can also be used for other applications, such as for a wallbox for electric cars, water pipes and power lines, or as a residential version for supplying other structures such as swimming pools, garden sheds, pool bars, or tool and equipment sheds, or the like.

[0004] An above-ground installation is defined as one that is at least level with the surface above it. The installation can generally be carried out through an exterior wall, a floor, or a foundation slab. The heat exchanger wall penetration is preferably arranged horizontally, but can also be at an angle.

[0005] It is known in the prior art to lay fluid lines for the heat exchanger system, for example between the indoor and outdoor units, through the ground. The terms indoor unit and outdoor unit are used in the present application by way of example. The heat exchanger wall penetration according to the present invention is generally suitable for routing lines of a heat exchanger system through any wall section. Heat pumps also include so-called monobloc systems and split units, which have an outdoor and an indoor unit. Monobloc systems have only one unit, which is usually located outdoors. For these systems, an indoor unit is understood to be a component of the heating system within the house, e.g., a heating circuit manifold (regulated or unregulated). The term "component" does not require that a control loop be present in the component in question.

[0006] In addition, especially when retrofitting such heat exchanger systems to existing buildings, the above-ground connection of the outdoor unit to the indoor unit is also known, in which the fluid lines are laid through an outer wall of a building.

[0007] DE 20 2011 051944 U1 relates to a wall penetration with a cuboid-shaped block of concrete having a front and a back, and with at least one through-opening extending from the front to the back. A modular wall penetration is known from US 4 889 298 A. DE 10 2009 033187 A1 relates to a device for the tight passage of cables, conduits, or the like through a wall or roof, with a compression ring made of elastic material. US 2019 / 123540 A1 relates to a sealing arrangement. DE 198 38 040 A1 relates to a building connection device for supply lines.

[0008] It has been observed that in many construction site situations, fluid lines are routed through the building's exterior wall, creating a gap. This remaining gap between the line and the surrounding wall surface is simply filled with suitable construction foam. Such solutions have the disadvantage of providing insufficient protection against environmental influences such as moisture, cold, noise, UV radiation, etc. Furthermore, it is considered a disadvantage that such solutions are not bird-proof.

[0009] Installing a heat exchanger system requires the collaboration of several trades at the installation site. For example, the core drilling through the building wall is usually not carried out by the same installer as the heat exchanger system itself. This makes it more difficult to comply with the relevant requirements and constraints arising from the building and plant engineering, which are typically documented in specifications.

[0010] While sealing systems exist for introducing fluid-carrying pipes into buildings through walls, these are sometimes complex in design and only available within a certain price range. Therefore, these systems are not suitable for use with the fluid lines of a heat exchanger system.

[0011] A further disadvantage is that the installer has to carry a large number of parts and sometimes has to make numerous penetrations through a single wall section. This often makes installation work for existing wall penetrations complex and therefore labor-intensive.

[0012] Against this background, the invention was based on the objective of further developing a heat exchanger wall penetration of the type mentioned above in such a way as to eliminate the disadvantages found in the prior art as far as possible. In particular, a heat exchanger wall penetration is to be provided that is easy to install and has low component complexity.

[0013] According to the invention, the problem in a heat exchanger wall penetration of the type mentioned above is solved by the features of claims 1 and 15.

[0014] The cable penetrations are preferably fluid line penetrations. However, it is also possible, for example, to route a fluid line through one penetration and an electrical or data line through a second penetration.

[0015] In this respect, two heat exchanger wall penetrations can be provided, with each heat exchanger wall penetration carrying a fluid line of the heat exchanger system via a first pipe penetration and a further line, e.g., a power line or data line, via a second pipe penetration. According to one embodiment, the molded part is formed exclusively by the base body.

[0016] The heat exchanger wall penetration, consisting of a molded part and a sealing unit, provides a particularly simple and cost-effective way to insulate the pipes passing through the wall section. For example, only two heat-carrying fluid pipes are required for the wall penetration: the molded part and the corresponding sealing unit. When the heat exchanger wall penetration is installed, the sealing unit is connected to the molded part at the first end section.

[0017] The fitting can be easily adapted to the specific thickness of the wall section directly on-site, for example, at the construction site, by simply cutting it to length. Thanks to the functional integration inherent in the fitting itself, the installer only needs to carry a small number of components for installation. Overall, this significantly simplifies and speeds up the installation of such a heat exchanger wall penetration. In other words, a single installer can install a greater number of wall penetrations in the same amount of time.Furthermore, the need for potting fluid lines and components can be advantageously eliminated, thus reducing the health risks for the installer and allowing the wall penetration to be installed in a single operation without waiting for drying time. In other words, functional integration is achieved through the molded part. This part performs several functions, namely providing thermal insulation, a clamping option, guidance, and length adjustability.

[0018] By manufacturing the molded part from a foamed or expanded material, good thermal insulation is achieved. Furthermore, the foam also provides electrical isolation between the outer and inner components. The weight of such a component is also low. In addition, such a molded part exhibits favorable sound decoupling properties. Moreover, such a foam component can be easily cut to the required length, allowing the molded part to have a length greater than the typically expected wall thickness. Any excess material can then be trimmed off as needed. Preferably, the molded part also possesses sound-absorbing and / or vibration-damping properties.

[0019] In one embodiment, the heat exchanger system is a heat pump system with an outdoor unit located outside a building and an indoor unit located inside the building. Both units are connected by a fluid line, and these fluid lines are routed through a building wall, in particular from the exterior to the interior of the building and vice versa, by means of the heat exchanger wall penetration according to the invention. Preferably, the base body of the fitting is designed as a cylindrical body. The geometry of the cylindrical base body is essentially adapted to the length and diameter of the opening in the wall section, with the diameter of the base body being selected so that it can be inserted into the opening. The fluid line penetrations are preferably completely enclosed radially by the fitting.In addition to the application described, the heat exchanger wall penetration according to the present invention is generally suitable for routing pipes of a heat exchanger system through any wall section. This can also include interior wall sections.

[0020] According to one embodiment, the closure unit is designed to rest against the wall section and can be connected to, or is connected to, the molded part at the first end section. This results in a particularly compact unit in which the molded part has direct contact with the first end section.

[0021] According to an alternative embodiment, the sealing unit is arranged at a distance from the molded part in the assembled state of the heat exchanger wall penetration, in particular wherein a gap between the sealing unit and the molded part is at least partially filled with a filler material. This alternative embodiment is advantageous for applications where the molded part is shorter than the thickness of the wall section. The resulting air gaps are preferably filled with a filler material, e.g., butyl. According to this alternative embodiment, either greater wall thicknesses can be overcome or smaller molded parts can be used for given wall thicknesses.

[0022] According to one embodiment, the foamed or expanded material is selected from the list comprising polystyrene, polypropylene, polyurethane, and cellular rubber. These materials have proven suitable for ensuring easy processing while simultaneously exhibiting the desired thermal insulation and electrical insulation properties.

[0023] According to one embodiment, the molded part is made of foam glass. Such foam glass is not only dimensionally stable but also resistant to moisture, such as rainwater.

[0024] According to one embodiment, the molded part has at least two sections that divide it along its longitudinal axis. The sections are preferably connected to each other by means of a connecting arrangement. The sections preferably extend over the entire length of the molded part.

[0025] Preferably, the subsections are symmetrically designed. The subsections are preferably designed as partial shells. Preferably, cable glands are formed in the subsections. According to one embodiment, the cable glands are at least partially open in a radially outward direction. According to another embodiment, the cable glands are also at least partially open inward, or partially open in the first and second subsections, so that when the subsections are connected, a corresponding cable gland is formed. The connection arrangement is preferably designed such that pockets are provided in the area of ​​the subsections into which sliding nuts can be inserted. By screwing a screw into the sliding nut, it can be preloaded against the respective locking unit.

[0026] According to one embodiment, the base body has at least one, and in particular two, cable glands extending from the first end section to the second end section, each designed to accommodate a current-carrying conductor of the heat exchanger system. This allows not only the existing fluid lines connecting an outdoor unit to an indoor unit to pass through a wall, but also the current-carrying conductors required for the electrical supply of the outdoor unit. The base body also provides electrical insulation for the conductors, preferably designed to meet electromagnetic compatibility (EMC) requirements.

[0027] According to one embodiment, the base body has at least one data cable feedthrough extending from the first end section to the second end section, which is designed to accommodate a data cable of the heat exchanger system. In addition to or as an alternative to the power cable, a data cable can also be routed through the wall feedthrough via the data cable feedthrough, thus establishing a data connection to the outdoor unit.

[0028] According to one embodiment, the molded part has a length of 15 cm to 120 cm, particularly 50 cm to 60 cm. It has been found that this length range covers a predominant proportion of the assembly scenarios and wall thicknesses of wall sections that can be expected in practice. In this way, the installer can carry base bodies of the same geometry, which are adequately dimensioned for typical wall thicknesses and can be shortened on site if necessary.

[0029] According to one embodiment, the base body has a longitudinal axis extending from the first end section to the second end section, and the base body has a cylindrical cross-section along this longitudinal axis. The cylindrical cross-section is preferably adapted to a sufficiently and typical opening diameter of a wall section, so that the base body remains easy to assemble while minimizing the clearance between the wall section opening and the base body. According to one embodiment, the molded part has shoulders to facilitate demolding. In another embodiment, the molded part is conical in design.

[0030] According to one embodiment, the base body has at least one marking for adjusting the length of the molded part. Preferably, the marking is designed as a length indicator and is directly affixed to the molded part. After the installer has determined the length or depth of the opening in the wall section, he can easily cut the molded part to length by consulting the markings on it.

[0031] According to one embodiment, at least one, or in particular all, of the feedthroughs have a circumferential centering rib or several axially extending centering ribs for centering the cables. Preferably, the centering rib has a predetermined breaking point. Such a centering rib can be molded or foamed into the feedthroughs and ensures that the cables are reliably held in the molded part even with slight variations in cable diameter or with different cable diameters.

[0032] According to one embodiment, the wall penetration has a sealant arranged in a space extending radially between the base body and the opening in the building wall section. The sealant is preferably designed as an expanding tape or mounting foam. The expanding tape is preferably made of polyurethane compression tape, polyethylene cord, polyurethane cord, or ethylene propylene diene monomer (EPDK) foam tape. Using such an expanding tape reduces the installer's exposure to hazardous substances and eliminates the need for additional training. Mounting foam ensures particularly easy installation. According to an alternative embodiment, thick-film adhesive and / or foam tape can be used as the sealant.

[0033] According to one embodiment, the molded part is designed to be axially and / or radially compressible. In another embodiment, the molded part is pre-compressed radially or axially before assembly and expands axially and / or radially after being inserted into the wall opening and the release of any clamping force. This eliminates the need for alternative sealants and achieves a particularly good seal between the molded part or base body and the wall opening.

[0034] According to one embodiment, the closure unit has a seal, in particular a cellular rubber seal, on the side facing the wall section. The side of the wall penetration with the cellular rubber seal is preferably used as the building exterior seal and ensures a seal against the wall section. According to one embodiment, the closure unit is designed as an acrylic plate or injection-molded part, or has one. Preferably, the closure unit has a flange, preferably a circumferential flange, for bearing against the wall section.

[0035] According to one embodiment, a locking flange is integrally formed on the second wall section, which is designed to abut the wall section opposite the locking unit. The base body and locking flange are formed in one piece, in particular as a single component. This reduces the component complexity. The integrally formed locking flange is, in particular, arranged on the interior side of the building at an opening in a wall section.

[0036] According to an alternative embodiment, the closure unit is a first closure unit, wherein the wall penetration has a second closure unit which is designed to abut the wall section and can be connected to the molded part at the second end section, wherein the second closure unit has passages for the lines to be routed through the wall penetration. According to this alternative embodiment, no closure flange is formed on the second end section, but rather a second closure unit is provided which can be connected to the second end section of the molded part.

[0037] According to one embodiment, the first locking unit and / or the second locking unit have at least one locking element designed to penetrate the molded part and form a locking connection with it. Preferably, the locking element is designed as a locking hook. The locking hook, in particular, has a point that facilitates penetration into the molded part. The locking hook also preferably has one or more barbs that ensure a secure connection between the molded part and the locking element after the locking hook has been inserted.

[0038] In one embodiment, the first locking unit has two locking elements arranged opposite each other. In another embodiment, the second locking unit has two locking elements arranged opposite each other. In another embodiment, the first locking unit and / or the second locking unit have guide elements, preferably arranged circumferentially around the locking unit, the orientation of which corresponds to a diameter of the molded part. The guide elements allow for the alignment and guidance of the locking units relative to the molded part. In one embodiment, the locking units are connected to the molded part exclusively by means of locking elements. In another embodiment, the locking units are connected to the molded part by means of both locking elements and insulating dowels.In one embodiment, the locking units are connected to each other by means of locking devices and at least one clamping device. The clamping device is preferably designed as a threaded rod. The threaded rod is preferably made of a non-conductive material, in particular plastic. In another embodiment, only one of the locking units is connected to the molded part by means of a locking device and / or clamping device and / or insulation anchor.

[0039] According to one embodiment, at least one of the locking units, in particular the locking unit at the first end section, is connected to the molded part by means of screws or dowels, in particular insulation dowels, which are screwed into the respective end section of the molded part. In particular, this achieves a tension between the respective locking unit and the molded part.

[0040] According to one embodiment, the first closure unit and / or the second closure unit has at least one guide tube, and the molded part has a corresponding receiving channel for the guide tube, in particular wherein the guide tube corresponds to at least one passage for the line to be routed through the wall penetration and / or the receiving channel corresponds to one of the line penetrations.

[0041] By providing a guide tube that is inserted into a receiving channel of the molded part, the length of the wall penetration can be adjusted particularly easily, as the molded part and the closure unit are guided and positioned relative to each other within this channel. Any gaps that may arise between the molded part and the closure unit can be filled with filler material if necessary.

[0042] According to one embodiment, at least one of the closure units and / or the closure flange has a vent opening for venting the opening. Such an opening is particularly advantageous for assembly scenarios where foam is introduced into the space between the opening and the molded part, ensuring reliable application and curing of the foam. Furthermore, such an opening allows the gases generated during foam curing to escape. According to one embodiment, the molded part is multi-part in one direction, from the first end section to the second end section, i.e., in the axial direction of the molded part, and is particularly multi-part or multi-part. This facilitates subsequent installation of the molded part and simplifies its manufacture. According to one embodiment, the molded parts are connected to one another, in particular by being plugged together or arranged one behind the other.

[0043] The invention has been described above with reference to a wall penetration. In a further aspect, the invention relates to a molded part for a heat exchanger wall penetration for the above-ground installation of a heat exchanger system with multiple lines, in particular heat-carrying fluid lines, wherein the wall penetration is configured for passing the lines through an opening in a wall section. The invention solves the problem described above in that the molded part can be inserted into the opening, wherein the molded part has a base body with a first end section and an opposing second end section, and wherein the base body has at least two line penetrations extending from the first end section to the second end section, which are configured to each accommodate a line of the heat exchanger system.

[0044] According to one embodiment, the molded part is made of a foamed material. According to one embodiment, the foamed material is selected from the list comprising expanded polystyrene, expanded polypropylene, and polyurethane. According to one embodiment, the base body has at least one, and in particular two, power cable feedthroughs extending from the first end section to the second end section, each configured to accommodate a current-carrying conductor of the heat exchanger system. According to one embodiment, the base body has at least one data cable feedthrough extending from the first end section to the second end section, configured to accommodate a data cable of the heat exchanger system. According to one embodiment, the molded part has a length of 15 cm to 120 cm, in particular 50 cm to 60 cm.

[0045] According to one embodiment, the base body has a longitudinal axis extending from the first end section to the second end section, and the base body has a cylindrical or substantially cylindrical cross-section along this longitudinal axis. The term "substantially cylindrical" also includes bodies formed, for example, from several cylinders with slightly different diameters, or featuring circumferential grooves, and the like. According to one embodiment, the base body has at least one marking for adjusting the length of the molded part. According to one embodiment, at least one, and in particular all, of the feedthroughs have one or more axially extending centering ribs for centering the conduits. According to one embodiment, a sealing flange is integrally formed on the second end section.According to one embodiment, the base body has recesses for receiving insulation anchors. According to another embodiment, the closure flange has a vent for venting the opening.

[0046] The molded part, moreover, utilizes the same advantages and preferred embodiments as the wall penetration according to the invention, and vice versa. In this regard, reference is made to the above explanations, and their content is incorporated herein.

[0047] In a further aspect, the invention relates to the use of a heat exchanger wall penetration according to one of the preceding embodiments for routing pipes of a heat exchanger system, in particular a heat pump system, through an above-ground opening in a wall section. This use also takes advantage of the same benefits and preferred embodiments as the heat exchanger wall penetration and the molded part according to the invention, and vice versa. In this regard, reference is made to the above explanations, and their content is incorporated herein.

[0048] The invention is described in more detail below with reference to preferred embodiments and the accompanying figures.

[0049] This shows: Fig. 1 A first embodiment of a heat exchanger wall penetration according to the invention, inserted into an opening of a wall section, in a sectional view; Fig. 2 the embodiment of the wall penetration according to the invention Fig. 1 in a perspective drawing; Fig. 3 the embodiment of the wall penetration according to the invention Fig. 1 and Fig. 2 in a sectional view; Fig. 4, Fig. 5 Side views of the embodiment of the wall penetration according to the invention as shown in the preceding figures. Fig. 6 an alternative embodiment of a heat exchanger wall penetration in a perspective view; Fig. 7 the embodiment of a heat exchanger wall penetration according to Fig. 6 in a sectional view; Fig. 8 a closure unit of the exemplary embodiment of a heat exchanger wall penetration according to the Fig. 6 and Fig. 7; Fig. 9 an alternative embodiment of a heat exchanger wall penetration in a sectional view; Fig. 10 Another alternative embodiment of a heat exchanger wall penetration in a sectional view; Fig. 11 an embodiment of a heat exchanger system; Fig. 12 an alternative embodiment of a wall penetration according to the invention in a perspective view; Fig. 13 a partial section of the molded part according to the embodiment shown in Fig. 12 in a perspective view; and Fig. 14 the embodiment of the molded part according to the Fig. 12 and Fig. 13 in a bottom view.

[0050] The Fig. Figures 1 to 5 show a first embodiment of a heat exchanger wall penetration 2. The heat exchanger wall penetration 2 serves for the above-ground installation of a heat exchanger system 4, which is located in Fig. 1 is only schematically indicated. Such a heat exchanger system 4 usually has two fluid lines 6 that connect an indoor unit (not shown), located inside a building, with an outdoor unit (not shown), located outside the building. The heat exchanger wall penetration 2 is designed to allow the fluid lines 6 to pass through an opening 10 in a wall section 8. The heat exchanger wall penetration 2 has a fitting 12 and a sealing unit 22.

[0051] The molded part 12 can be inserted into the opening 10. The molded part 12 has a base body 14 with a first end section 16 and an opposing second end section 18. The molded part 12 has a substantially elongated cross-section. The first end section 16 and the second end section 18 are oriented substantially parallel to the walls of a wall section 8. The base body 14 has two fluid line feedthroughs 20, 21 extending from the first end section 16 to the second end section 18, which are located particularly in the Fig. 2, 4, and 5 are recognizable. The fluid line penetrations 20 and 21 are designed to each accommodate a fluid line 6 of the heat exchanger system 4. The fluid line penetrations 20 and 21 are arranged apart from each other in the molded part 12 and are radially enclosed by it.

[0052] The sealing unit 22 is designed to be fitted against the wall section 8. The sealing unit 22 is connected to the molded part 12 at the first end section 16. The sealing unit 22 has openings 24 for the lines 6 to be routed through the heat exchanger wall penetration 2. The molded part 12 is made of a foamed material 28. The foamed material 28 is preferably expanded polystyrene, expanded polypropylene, or polyurethane.

[0053] In the Fig. In the embodiment shown in Figures 1 to 5, the base body 14 further comprises two power cable feedthroughs 30, 32 extending from the first end section 16 to the second end section 18. The power cable feedthroughs 30, 32 are each configured to accommodate a current-carrying conductor of the heat exchanger system 4. The base body 14 also comprises two data cable feedthroughs 34, 36 extending from the first end section 16 to the second end section 18. The data cable feedthroughs 34, 36 are configured to accommodate a data cable of the heat exchanger system 4. The fluid cable feedthroughs 20, 21, the power cable feedthroughs 30, 32, and the data cable feedthroughs 34, 36 are each spaced apart from one another within the molded part 12.They extend in a straight line from the first end section 16 to the second end section 18, that is, from a first end face of the molded part 12 to a second, opposite end face of the molded part 12.

[0054] The molded part 12 has a length l. The base body 14 further has a longitudinal axis 38. The longitudinal axis 38 extends from the first end section 16 to the second end section 18. The base body 14 has a cylindrical cross-section along the longitudinal axis 38. The cylindrical cross-section can be stepped. A diameter of the base body 14 corresponds in particular to a diameter of the opening 10. Here, "corresponds" in the sense of the present invention means that a diameter of the base body 14 is slightly smaller than a diameter of the opening 10, so that the molded part 12 can be easily inserted into the opening 10, and yet a Fig. The space 46 shown between the molded part 12 and the opening 10 is as small as possible.

[0055] The base body 14 has at least one marking 40 for length adjustment of the fitting 12. The marking 40 can also be designed as a saw groove, which assists the installer in cutting the fitting 12 to length. Optionally, the penetrations 20, 21, 30, 32, 34, 36 have a centering rib 42 for centering the pipes 6. The heat exchanger wall penetration 2 also has a sealant 44. The sealant 44 is arranged in the space 46 extending radially between the base body 14 and the opening 10 in the building wall section 8. The sealant 44 is preferably in the form of an expanding strip, as shown in Fig. 1 shown, formed. Alternatively, the sealant 44 can be formed as mounting foam.

[0056] The closure unit 22 has a seal 48 on the side facing the wall section 8, in particular a cellular rubber seal. The closure unit 22 with the cellular rubber seal is used in particular for sealing on the exterior of a building. The closure unit 22 has an acrylic plate 52 or an injection-molded part, or is formed from one of these. The closure unit 22 has a flange 56, which is in particular designed as a circumferential flange collar 56, for bearing against the wall section 8. In the Fig. In the embodiment shown in Figures 1 to 5, a closure flange 26 is integrally formed on the second end section 18. The closure flange 26 is formed integrally with the base body 14; that is, the closure flange 26 and the base body 14 form a single component, which, for example, is foamed in a common mold for the production of the component. The closure flange 26 is brought into contact with an inner wall section 8.

[0057] The closure unit 22 and the closure flange 26 preferably each have a vent opening 54 for venting the opening 10. Such a vent opening 54 is particularly advantageous if the resulting space between the molded part 12 and the opening 10 is to be filled with expanding foam. In the base body 14 of the molded part 12, insulation anchor holes 50 are provided in the area of ​​the second end section 18. These provide a guide and mounting aid for insulation anchors 68, which screw or clamp the closure unit 22 to the molded part 12 at the second end section 18.

[0058] The installation of a corresponding heat exchanger wall penetration 2 is carried out in particular in the following steps: inserting the fitting 12 into the opening 10, passing the lines 6 through the fitting 12, passing the lines 6 through the closure unit 22, connecting, in particular clamping, the closure unit 22 to the fitting 12 using insulation anchors 68. If the length I of the fitting 12 is greater than the wall thickness of the wall section 8, the fitting 12 is cut to length before installation.

[0059] The Fig. Figures 6 to 8 show an alternative embodiment of the heat exchanger wall penetration 2. The heat exchanger wall penetration 2 has a molded part 12, which can be inserted into the opening 10, in a manner known per se. The molded part 12 has a base body 14 with a first end section 16 and an opposing second end section 18. The base body 14 has two fluid line penetrations 20, 21, power line penetrations 30, 32, and data line penetrations 34, 36, each extending from the first end section 16 to the second end section 18. These are arranged in Fig. 6 only partially indicated and otherwise as in the Fig. Shown 1 to 5.

[0060] Furthermore, the in Fig. The embodiment shown in Figure 6 comprises two locking units 22 and 58. Locking unit 22 can be connected to the first end section 16. The second locking unit 58 can be connected to the second end section 18. In the Fig. In the embodiment shown in Figures 6 to 8, the connection between the locking units 22, 58 and the base body 14 is achieved such that the locking units 22, 58 are pressed towards the molded part 12 in such a way that locking means 60, which are arranged on the locking units 22, 58, penetrate the molded part 12 and lock into it. With reference to the Fig. 8 and Fig. The locking elements 60 are provided with barbs 72 which, after entering the molded part 12, ensure a secure connection with the molded part 12. Each locking element 60 has a penetrating tip 74 which facilitates its penetration into the molded part 12.

[0061] Guide means 62 are also provided for aligning the closure units 22, 58 relative to the molded part 12. The guide means 62 are arranged, in particular, uniformly distributed around the circumference of the closure units 22, 58, such that the spacing of the guide means 62 corresponds to a diameter of the molded part 12. As shown by the Fig. Each locking unit 22 has two locking means 60, which are arranged opposite each other, and six guide means 62. In addition, saw grooves 70 are arranged on the molded part 12, which simultaneously serve as a length scale for cutting the molded part 12 to length.

[0062] The sealing units 22, 58 have, as already provided for the first embodiment, passages 24 for the line 6 to be routed through the heat exchanger wall penetration 2. In the Fig. In the embodiment shown in Figure 9, the configuration of the heat exchanger wall penetration 2 essentially corresponds to the embodiment shown in Figure 9. Fig. 6 to 8. In addition, two clamping means 64 are provided for clamping the locking units 22, 58 to the molded part 12; these are designed as threaded rods 66. Nuts are arranged on the outside of each of the threaded rods 66, which allow clamping of the locking units 22, 58 in contact with the nuts.

[0063] Fig. Figure 10 shows another alternative embodiment of a heat exchanger wall penetration 2, which is also based on the embodiment of the Fig. 6 to 8. In addition, insulation dowels 68 are provided for connecting and tensioning the locking units 22, 58 with the molded part 12, which are screwed to the molded part 12, wherein a head of the insulation dowels 68 exerts a clamping force on the respective locking unit 22, 58, so that the locking units 22, 58 are tensioned with the molded part 12.

[0064] Fig. Figure 11 shows a heat exchanger system 4 with an outdoor unit 78 and an indoor unit 80 connected to the outdoor unit via lines 6, 82. The lines 6, 82 are guided through an opening 10 of a wall section 8 by means of the heat exchanger wall penetration 2. Fig. Figure 11 further shows the heat exchanger wall penetration 2 in a perspective view, which corresponds to the representation in the Fig. 2 corresponds.

[0065] Fig. Figure 12 shows an alternative embodiment of a heat exchanger wall penetration 102. The heat exchanger wall penetration 102 is suitable for above-ground installation of a heat exchanger system 4 with multiple pipes 6 (not shown). The heat exchanger wall penetration 102 has a molded part 112 which can be inserted into a wall opening, wherein the molded part 112 has a base body 114 with a first end section 116 and an opposing second end section 118, as shown in Fig. Figure 13 shows the base body 114 having at least two pipe penetrations 120, 121 extending from the first end section 116 to the second end section 118, which in this case are designed as fluid pipe penetrations 120, 121. The pipe penetrations 120, 121 are each configured to accommodate a pipe of the heat exchanger system 4. The base body 114 has a longitudinal axis 138. In the present embodiment, the molded part 112 consists exclusively of the base body 114.

[0066] The heat exchanger wall penetration 102 also includes a sealing unit 122. This is designed to fit against the wall section. The sealing unit 122 has openings 124 for the lines 6 to be routed through the wall penetration 102. The molded part 112 is made of a foamed material 128.

[0067] As in Fig. As shown in Figure 12, the molded part 112 has at least two sections 164 and 166. Sections 164 and 166 divide the molded part 112 along its longitudinal axis and each extend over the entire length of the molded part 112. Sections 164 and 166 of the molded part 112 have two power and control cable feedthroughs 130 running from the first end section 116 to the second end section 118, as well as two fluid cable feedthroughs 120 and 121. Data cables can also be routed through feedthroughs 120 and 121. The wall feedthrough 102 also has a second closure unit 158, which is likewise designed to be attached to a wall section and can be connected to the molded part 112 at the second end section 118.

[0068] The second locking unit 158 ​​also exhibits in Fig. The fitting 112 has 12 passages 124 (not shown) for the lines 6 to be routed through the wall penetration 102. Both the first closure unit 122 and the second closure unit 158 ​​each have at least one guide tube 160. The fitting 112 has corresponding receiving channels 162 for the guide tube 160. The guide tube 160 corresponds to at least one passage 124 for the line to be routed through the wall penetration 102 with respect to the inner diameter of the guide tube 160 relative to the outer diameter of the line 6. Furthermore, the receiving channel 162 corresponds to one of the line penetrations 120, 121. In this way, the line penetrations 120, 121 can also be used to guide the guide tube 160 within the framework of functional integration. A recess 134 is formed between the adjacent sections 164 and 166 of the molded part 112. This recess serves to create a connection between the molded part 112 and the molded part 112.whose subsections 164, 166 and the respective locking unit 122, 158 are provided for in pockets 170, which are in . Fig. As shown in Figure 14, so-called sliding nuts 172 are used. If a screw is guided through the respective locking unit 122, 158 in the direction of the sliding nut 172, the sliding nut is pressed towards the locking unit 122, 158 during a corresponding clamping process. Since the sliding nut 172 is received in a pocket 170 in the base body 114, the base body 114 is also pressed against the respective locking unit 122, 158 in this way, and thus the base body 114 is clamped against the locking unit 122, 158.

[0069] As in Fig. As shown in Figure 14, the pockets 170 can be arranged in a transition area between a first subsection 164 and the second subsection 166, so that a relative fixing of the subsections 164 and 166 to each other can also take place here. As shown in the Fig. 12 and Fig. As can be clearly seen in Figure 13, sections 164 and 166 also have saw guides 174. The saw guides 174 serve to guide a saw that can be used to cut the base body 114 to length, depending on the wall thickness of the wall into which the heat exchanger wall penetration 102 is to be inserted. Reference symbol list 2 heat exchanger wall penetrations 4 heat exchanger system 6 Line / Fluid line 8 wall section 10 Opening 12 Molded part 14 basic shapes 16 first final section 18 second final section 20 first fluid line penetration 21 second fluid line penetration 22 locking unit 24 passes of the locking unit 26 Locking flange 28 foamed material 30 First power line penetration 32 Second power line penetration 34 first data line penetration 36 second data line feedthrough 38 Base body longitudinal axis 40 Basic body marking 42 Centering bridge 44 Sealants 46 space 48 Seal of the locking unit 50 insulation dowel holes 52 Acrylic sheet / injection molded part 54 Vent opening 56 Flange collar of the locking unit 58 second locking unit 60 Resting agents 62 Management tools 64 tensioning devices 66 threaded rod 68 insulation anchors 70 saw grooves / length scale 72 barbs 74 Penetrating tip 76 Mother 78 Outdoor unit 80 Indoor unit 82 lines (power, data) 102 Heat exchanger wall penetration 112 Molded part 114 Basic body 116 first final section 118 second final section 120 first fluid line penetration 121 second fluid line penetration 122 locking unit 124 passes of the locking unit 128 foamed material 130 Power and control line feedthrough 134 recess 138 Base body longitudinal axis 158 second locking unit 160 guide tube 162 Recording channel 164 first subsection 166 second subsection 168 Connection arrangement 170 bag 172 Sliding nut 174 Saw guide l Length of the molded part QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 20 2011 051944 U1

[0007] US 4 889 298 A

[0007] DE 10 2009 033187 A1

[0007] US 2019 / 123540 A1

[0007] DE 198 38 040 A1

[0007]

Claims

[1] Heat exchanger wall penetration (2, 102) for above-ground installation of a heat exchanger system (4) with multiple pipes (6), wherein the wall penetration (2) is designed to allow the pipes (6) to pass through an opening (10) of a wall section (8), wherein the wall penetration (2) has: - a molded part (12) which can be inserted into the opening (10), wherein the molded part (12) has a base body (14) with a first end section (16) and an opposing second end section (18), and wherein the base body (14) has at least two conduit passages (20, 21) extending from the first end section (16) to the second end section (18), which are designed to each accommodate a conduit (6) of the heat exchanger system (4), - a closure unit (22) which is designed to be installed on the wall section (8) wherein the closure unit (22) has passages (24) for the lines (6) to be routed through the wall penetration (2), wherein the molded part (12) is formed from a foamed or expanded material (28), characterized by , that the molded part (112) has at least two subsections (164, 166) that divide the molded part (112) along its longitudinal axis. [2] Wall penetration (2) according to claim 1, wherein the closure unit (22) is designed to abut the wall section (8) and can be connected to the molded part (12) at the first end section (16). [3] Wall penetration (2) according to claim 1, wherein the closure unit (22) is arranged at a distance from the molded part (12), in particular wherein a space between the closure unit (22) and the molded part (12) is at least partially filled with a filling material. [4] Wall penetration (2) according to any of the preceding claims, wherein the foamed or expanded material (28) is selected from the list comprising: - Polystyrene, especially expanded polystyrene, - Polypropylene, - Polyurethane, - Foam glass. [5] Wall penetration (2) according to one of the preceding claims, wherein the base body (14) has at least one, in particular two, power line penetrations (30, 32) extending from the first end section (16) to the second end section (18), which are designed to each accommodate a current-carrying conductor of the heat exchanger system (4) and / or wherein the base body (14) has at least one data line feedthrough (34, 36) extending from the first end section (16) to the second end section (18), which is designed to accommodate a data line of the heat exchanger system (4). [6] Wall penetration (2) according to one of the preceding claims, wherein the base body (14) has a longitudinal axis (38) extending from the first end section (16) to the second end section (18), and wherein the base body (14) has a cylindrical cross-section along the longitudinal axis (38), and / or wherein the base body (14) has at least one marking (40) for length adjustment of the molded part (12). [7] Wall penetration (2) according to one of the preceding claims, wherein at least one, in particular all of the penetrations (20, 21, 30, 32, 34, 36) have a circumferential centering rib (42) or several axially extending centering ribs (42) for centering the conduits (6). [8] Wall penetration (2) according to one of the preceding claims, with a sealing agent (44) which is arranged in a space (46) extending radially between the base body (14) and the opening (10) in the building wall section (8), wherein the sealant (44) is in particular designed as a swelling tape or mounting foam or thick-film adhesive or foam adhesive tape. [9] Wall penetration (2) according to one of the preceding claims, wherein the closure unit (22) has a seal (48) on the side facing the wall section (8), in particular a cellular rubber seal and / or wherein the closure unit (22) comprises or is formed from an acrylic plate (52) or an injection-molded part. [10] Wall penetration (2) according to one of the preceding claims, wherein the closure unit (22) has a flange (56), preferably a circumferential flange collar (56), for bearing against the wall section (8) and / or wherein a closure flange (26) is formed on the second end section (18), which is designed to be attached to the wall section (8) opposite the closure unit (22). [11] Wall penetration (2, 102) according to one of the preceding claims, wherein the closure unit (22) is a first closure unit (22), and wherein the wall penetration (2) has a second closure unit (58) which is designed to abut the wall section (8) and can be connected to the molded part (12) at the second end section (18), wherein the second closure unit (58) has passages (24) for the lines (6) to be routed through the wall penetration (2). [12] Wall penetration (2) according to one of the preceding claims, wherein the first locking unit (22) and / or the second locking unit (58) has at least one locking means (60), in particular a locking hook (60), which is configured to penetrate the molded part (12) and to form a locking connection with the molded part (12) and / or wherein at least one of the closure units (22, 58) is clamped to the molded part (12) by means of insulation dowels (68) which are screwed into the molded part (12) at the respective end section (16, 18). [13] Wall penetration (102) according to claim 11, wherein the first closure unit (22) and / or the second closure unit (58) have at least one guide tube (160), and the molded part (12) has a corresponding receiving channel (162) for the guide tube (160), in particular wherein the guide tube (160) corresponds to at least one passage (124) for the line to be routed through the wall penetration (102) and / or the receiving channel (162) corresponds to one of the line passages (120, 121). [14] Wall penetration (2) according to one of the preceding claims, wherein at least one of the closure units (22, 58) and / or the closure flange (26) has a vent opening (54) for venting the opening (10) and / or wherein the molded part (12) is formed in multiple parts in one direction from the first end section (16) to the second end section (18), in particular in two parts or in three parts. [15] Heat exchanger wall penetration (2, 102) for above-ground installation of a heat exchanger system (4) with multiple pipes (6), wherein the wall penetration (2) is designed to allow the pipes (6) to pass through an opening (10) of a wall section (8), wherein the wall penetration (2) has: - a molded part (12) which can be inserted into the opening (10), wherein the molded part (12) has a base body (14) with a first end section (16) and an opposing second end section (18), and wherein the base body (14) has at least two conduit passages (20, 21) extending from the first end section (16) to the second end section (18), which are designed to each accommodate a conduit (6) of the heat exchanger system (4), - a closure unit (22) which is designed to be installed on the wall section (8) wherein the closure unit (22) has passages (24) for the lines (6) to be routed through the wall penetration (2), wherein the molded part (12) is formed from a foamed or expanded material (28), characterized by , that the foamed or expanded material (28) is selected from the list comprising: - Polystyrene, especially expanded polystyrene, - Polypropylene, - Polyurethane, - Foam glass. [16] Molded part (12) for a heat exchanger wall penetration (2) for above-ground installation of a heat exchanger system (4) with several heat-carrying fluid lines (6), wherein the wall penetration (2) is designed to allow the fluid lines (6) to pass through an opening (10) of a wall section (8), wherein the molded part (12) can be inserted into the opening (10), wherein the molded part (12) has a base body (14) with a first end section (16) and an opposing second end section (18), and wherein the base body (14) has at least two conduit passages (20, 21) extending from the first end section (16) to the second end section (18), which are designed to each accommodate a conduit (6) of the heat exchanger system (4), wherein the molded part (12) is formed from a foamed or expanded material (28), characterized by, that the molded part (112) has at least two subsections (164, 166) that divide the molded part (112) along its longitudinal axis. [17] Molded part (12) for a heat exchanger wall penetration (2) for above-ground installation of a heat exchanger system (4) with several heat-carrying fluid lines (6), wherein the wall penetration (2) is designed to allow the fluid lines (6) to pass through an opening (10) of a wall section (8), wherein the molded part (12) can be inserted into the opening (10), wherein the molded part (12) has a base body (14) with a first end section (16) and an opposing second end section (18), and wherein the base body (14) has at least two conduit passages (20, 21) extending from the first end section (16) to the second end section (18), which are designed to each accommodate a conduit (6) of the heat exchanger system (4), wherein the molded part (12) is formed from a foamed or expanded material (28), characterized by , that the foamed or expanded material (28) is selected from the list comprising: - Polystyrene, especially expanded polystyrene, - Polypropylene, - Polyurethane, - Foam glass. [18] Use of a heat exchanger wall penetration (2) according to one of claims 1-15 for passing lines (6) of a heat exchanger system (4), in particular a heat pump system, through an above-ground opening (10) in a wall section (8).

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