Support element and ceiling substructure for a heat exchanger ceiling

Abstract

Retaining element (15) for attaching an elongated heat transfer element (13) to a support profile (7) of a ceiling substructure (3) for a heat exchanger ceiling (1), with at least one distal retaining section (D) to which the heat transfer element (13) can be attached, characterized in that the retaining element (15) is provided with a proximal retaining section (P) which is designed to be attachable to the support profile (7), wherein the proximal retaining section (P) has a positive locking arrangement (18a, 18b) which is designed to engage with the support profile (7) and / or the distal retaining section (D) with the heat transfer element (13) which is designed to engage freely and with limited displacement against gravity.

Description

[0001] The invention relates to a retaining element for attaching an elongated heat transfer element to a support profile of a ceiling substructure for a heat exchanger ceiling, with at least one distal retaining section to which the heat transfer element can be attached, and with a proximal retaining section which is designed to be attached to the support profile.

[0002] The invention further relates to a ceiling substructure with at least one support profile for attaching ceiling cladding elements in a suspended ceiling plane of a heat exchanger ceiling, with at least one elongated heat transfer element and with at least one retaining element by which the heat transfer element can be attached to the support profile, wherein the heat transfer element, in a state attached to the support profile, projects out of the suspended ceiling plane on the side facing away from the support profile.

[0003] These types of support elements and ceiling substructures are used in heat exchanger ceilings, which can be heated or cooled as needed. The heat transfer elements, which are usually tubular and through which a heat transfer fluid flows, are used for heating or cooling. During heating, the heat transfer fluid transfers thermal energy to the ceiling via the heat transfer element. During cooling, heat is transferred to the heat transfer fluid via the heat transfer element and then carried away by it.

[0004] The support profiles are usually standardized components and part of a modular system, from which the ceiling substructure can be built as simply as possible.

[0005] For aesthetic or acoustic reasons, the ceiling substructure can usually support panel-shaped ceiling cladding elements. These cladding elements typically lie flush against the ceiling substructure, referred to here as the suspended ceiling plane. To improve heat transfer to and from the room, the heat transfer elements should rest fully against the ceiling cladding elements. Complete contact ensures efficient heat transfer between the ceiling cladding elements and the heat transfer elements, thus integrating the ceiling elements into the heat flow.

[0006] German patent DE 17 59 289 A discloses a set of components for a ceiling cladding system. The ceiling cladding is suspended from a structural ceiling by means of support straps and a mounting rail. The visible surface of the ceiling cladding consists of louvers, which have upturned longitudinal edges, creating an interior space between the louvers and the mounting rail. Pipe sections circulating a heat-conducting medium are arranged within these interior spaces. A retaining clip secures each pipe section.

[0007] DE 93 15 216 U1 describes a chilled ceiling in which pipes are laid on ceiling panels. Connecting elements are provided for fastening; these elements are firmly attached to the pipes on their underside. The connecting elements have support hooks on their upper side that can engage in receiving openings of a retaining profile. A mounting slot extends between the support hooks to allow the connecting elements to be inserted into the retaining profile, enabling the connecting element to be slid horizontally onto an edge rib of the retaining profile.

[0008] DE 198 03 114 C2 relates to a heat exchanger ceiling in which heat-conducting elements are held by a horizontally running strip, the strip being pressed towards the underside of the ceiling by pressure elements, so that the heat-conducting elements form a positive connection with the ceiling.

[0009] German patent DE 20 2010 011 801 U1 describes a ceiling cladding with a heating and / or cooling device, wherein spring elements are pre-tensioned by cladding panels mounted on support rails under pressure via heat-conducting profiles bearing against the cladding panels. This presses the heat-conducting profiles against the cladding panels, thereby improving thermal contact.

[0010] A retaining element with the aforementioned features is also known, for example, from the heat exchanger ceiling of DE 198 03 114 C2. In this heat exchanger ceiling, a strip with a profile that accommodates the tubular heat transfer elements is used. The strip has a pressure element that exhibits spring-like elasticity in the vertical direction and is glued to the ceiling or a substructure attached to it. The pressure element is intended to generate a preload that presses the heat transfer elements against the ceiling cladding elements. The pressure element can, for example, be a foam strip coated with adhesive on both sides.

[0011] A disadvantage of the heat exchanger ceiling described in DE 198 03 114 C2 is that the heat-conducting elements can only adapt to a limited degree to any potential displacement of the ceiling cladding elements. At the same time, the adhesive fastening method described in DE 198 03 114 C2 often does not provide sufficient adhesion, especially under the conditions prevailing during on-site construction of a ceiling substructure.

[0012] The invention is therefore based on the objective of making the attachment of the heat transfer elements to the ceiling substructure both safer and more flexible.

[0013] This problem is solved by the subject matter of independent claims 1 and 9, wherein, according to the invention, the proximal holding section of the aforementioned holding element has a positive locking arrangement which can be brought into engagement with the support profile and / or the distal holding section with the heat transfer element which can be brought into engagement freely and slidably against gravity.

[0014] For the aforementioned ceiling substructure, the above problem is solved according to the invention by the fact that the heat transfer element is held in a form-fitting manner by the retaining element so that it is free against gravity and at least partially displaceable up to the plane of the ceiling.

[0015] The solution according to the invention does not require the elastic clamping element of DE 198 03 114 C2. The fact that the heat transfer elements can be moved solely against gravity allows for easy installation of the ceiling cladding elements without requiring significant force. Furthermore, greater displacement ranges are possible because commercially available foam strips are usually quite thin. The positive locking arrangement ensures secure fastening and easy movement even under heavy soiling.

[0016] The solution according to the invention can be further improved by the following embodiments, each of which is advantageous in itself and can be combined with each other as desired.

[0017] According to a first advantageous embodiment, the retaining element is preferably a stamped and bent part, manufactured in one piece, preferably from sheet metal. Besides simple and cost-effective manufacturing, this embodiment also has the advantage that the handling of the retaining element is similar to that of the stamped and bent parts typically used for constructing the ceiling structure and connecting the supporting profiles. Consequently, the installer on site can mount the heat transfer elements using the same techniques as the ceiling substructure.

[0018] The positive locking arrangement can be located on the proximal and / or distal holding section. On the proximal holding section, the heat transfer element is preferably held repeatedly and releasably by the positive locking arrangement. On the proximal holding section, the support profile is preferably held repeatedly and releasably by the positive locking arrangement.

[0019] According to a further advantageous embodiment, the proximal retaining section can be provided with a retaining leg opposite the distal retaining section and a stop located between the retaining leg and the distal retaining section, pointing towards the proximal retaining section. The retaining leg and the stop can form the positive locking arrangement on the proximal retaining section. In this embodiment, the support profile is held between the retaining leg and the stop.

[0020] Advantageously, the distance between the retaining leg and the stop is greater than the corresponding depth of the support profile. This dimension results in a movement of the retaining element relative to the support profile along the connecting direction between the distal and proximal retaining sections, which usually corresponds to the direction of gravity. The difference between these two distances determines the displacement of the heat transfer element relative to the ceiling substructure against the direction of gravity.

[0021] The retaining leg and / or the stop can be designed as bent or folded sections, or as punched tongues.

[0022] A further improvement is achieved if the retaining element, in particular its distal retaining section, is designed to hold only a single heat transfer element. In this design, a separate distal retaining section or a separate retaining element is used for each heat transfer element, so that the individual heat transfer elements are movable independently of one another, at least against gravity. The heat transfer elements can thus conform to curved ceiling cladding elements, which is not possible with the continuous strip of DE 198 03 114 C2 due to its inflexible geometry.In order to be able to conform to a curved ceiling cladding element, the heat transfer elements located closer to the fixing points of the ceiling cladding elements should be able to move less far against gravity towards the ceiling substructure than the heat transfer elements located in the middle between the fixing points.

[0023] If the retaining element has several distal retaining sections, for example one for each heat transfer element, these should preferably be movable independently of each other.

[0024] A receptacle, particularly in the form of a recess, for the heat transfer element can be provided on the distal holding section.

[0025] The positive locking arrangement of the distal retaining section can include two stops spaced apart longitudinally along the heat transfer element, in particular two of the aforementioned receptacles spaced perpendicular to their opening plane for a heat transfer element. The opening plane extends, in particular, perpendicular to the longitudinal extent of the heat transfer element. The two receptacles secure the heat transfer element against tilting or parallel to the suspended ceiling plane.

[0026] The receptacle can further be provided with at least one spring element at at least one location. The spring element can form a detent in which the heat transfer element can be received. For this purpose, the spring element can project into the receptacle. The heat transfer element can be provided with an undercut designed complementarily to the spring tongue. The spring element is part of the positive locking arrangement at the distal retaining section.

[0027] If, for example, an omega-shaped strip forming or receiving a tube is used as the heat transfer element, the at least one spring element is preferably located at the point on the distal retaining section corresponding to the constriction of the omega. This point can correspond to one end of the receiving section, so that in this embodiment the spring element can be arranged at the end of the receiving section.

[0028] If a spring element is arranged at at least two opposite points on the edge of the receptacle, assembly is simplified compared to using only a single spring element, because the parallel spring elements achieve a greater deflection with a lower spring force. In particular, two opposing spring elements can be provided. The at least one spring element can also project into the receptacle.

[0029] In an advantageous, because structurally simple, design, the spring element is designed as a spring tongue.

[0030] A spring tongue can be produced cost-effectively as a stamped part. The spring tongue can also be formed by a flange, which can run parallel to the ceiling surface. Such a flange can be formed at one end of the distal retaining section. The end of the distal retaining section can serve as a contact surface for the heat transfer element(s). Such a contact surface serves, for example, to align the heat transfer element(s) as parallel as possible to the ceiling surface.

[0031] To ensure sufficient stability, the length of the spring tongue can be a maximum of 70% of the length of the bend.

[0032] The mounting element itself can have a profile that is essentially Ω-, V-, W-, N-, L-, or U-shaped. U-shaped profiles, in particular, are already used in the construction of ceiling structures from the grid-like arrangement of support profiles. If this shape is adopted by the mounting element, the installation of the heat transfer elements can also be carried out by drywall installers who already use U-shaped mounting elements when assembling the ceiling substructure.

[0033] Independent displacement of adjacent heat transfer elements can be achieved, for example, by assigning a separate holding element to each heat transfer element on a support profile, or by holding each heat transfer element by a separate holding element.

[0034] The retaining element, when fastened, can be slidably mounted on the support profile transversely to the longitudinal extent of the heat transfer element. This makes it possible to adjust the position of the retaining element, and thus also of the heat transfer element, laterally to the specific conditions on site.

[0035] As mentioned above, at least two heat transfer elements running parallel to each other, particularly adjacent to each other, perpendicular to the ceiling plane and / or transverse to its longitudinal extent can be independently slidable from the supporting element. This measure ensures a high degree of flexibility in the construction of the heat exchanger ceiling because the position of the heat transfer elements can be precisely adapted to the requirements.

[0036] In a preferred embodiment, the retaining element can be slidably attached to the support profile along the support profile.

[0037] In a further embodiment, the displacement against gravity and preferably parallel to the ceiling plane is achieved exclusively by the proximal retaining section or realized in the positive locking arrangement of the proximal retaining section. In this embodiment, the connection between the retaining element and the heat transfer element is rigid.

[0038] In a further embodiment, the positive locking arrangement of the distal retaining section can permit only the displacement of the heat transfer element and the retaining element relative to each other, and the positive locking arrangement of the proximal retaining section can permit only the displacement against the direction of gravity. For this purpose, the heat transfer element can be movably held against gravity on the retaining element.

[0039] To increase the relative mobility between the support profile and the retaining element held by the support profile parallel to the suspended ceiling plane, the support profile can, according to a further advantageous embodiment, be spaced apart from the retaining element in a plane parallel to the suspended ceiling plane. In a further development, this can be achieved by making the distance between two retaining legs supporting the support profile greater than the width of the retaining element.

[0040] The invention is explained in more detail below by way of example with reference to the figures, using different embodiments. In these embodiments, different features can be combined or omitted as desired, in accordance with the above explanations.

[0041] For the sake of simplicity, the same reference symbols are always used in the figures for elements that correspond in terms of structure and / or function.

[0042] They show: Fig. 1 a schematic sectional view of a first embodiment of the invention; Fig. 2 a schematic sectional view of a second embodiment of the invention; Fig. 3A a schematic sectional view of a third embodiment of the invention; Fig. 3B a schematic sectional view along the plane IIIB-IIIB of the Fig. 3A; Fig. 3C a schematic representation of the view along arrow IIIC of the Fig. 3A; Fig. 4 a schematic perspective representation of a fourth embodiment of the invention; Fig. 5 a schematic perspective representation of a fifth embodiment of the invention; Fig. 6A a schematic sectional view of a sixth embodiment of the invention; Fig. 6B the embodiment of the Fig. 6A in a schematic sectional view during assembly; Fig. 7A a schematic sectional view of a seventh embodiment of the invention; Fig. 7B a schematic sectional view along the plane VIIB-VIIB of the Fig. 7A; Fig. 8 an eighth embodiment of the invention.

[0043] First, the structure and function of the invention will be described using the embodiment of the Fig. 1. Explained by way of example.

[0044] Fig. Figure 1 shows a heat exchanger ceiling 1, in which ceiling cladding elements 2 are held by a ceiling substructure 3. The ceiling substructure 3 defines a suspended ceiling level 4 in which the ceiling cladding elements 2, or rather their upper surfaces 5, are held. The suspended ceiling level 4 can run parallel to a ceiling level 6.

[0045] The ceiling substructure 3 can have support profiles 7, 8, which can be arranged transversely to each other in two planes 9, 10. The support profiles 8 in the lower plane define the suspended ceiling plane 4. The lower support profiles 8 are rigidly connected to the upper support profiles 7, resulting in a grid-like structure. The support profiles 7 and / or support profiles 8 can have a U-shaped profile. The open side can face upwards, towards the ceiling 12. The support profiles 7, 8 are usually manufactured according to a factory or industry standard. The support profiles 7, together with the attached support profiles 8, are suspended from the ceiling 12 by means of a suspension 11.

[0046] The heat exchanger ceiling 1 further comprises heat transfer elements 13, which preferably rest fully on the upper surface 5 of the ceiling cladding elements 2. The heat transfer elements 13 can comprise pipes or tubes in which a heat transfer fluid 14 flows. Fig. 1. The flow direction is perpendicular to the plane of the drawing. The heat transfer elements 13 are elongated in this direction.

[0047] The heat transfer elements 13 are shown here as examples of a multi-part structure: A hose 13a is at least partially enclosed, preferably by more than 180°, by a heat-conducting element 13b. The heat-conducting element can be made of sheet metal or a deep-drawn or extruded profile. Full contact between the hose 13a and the heat-conducting element 13b ensures good heat transfer. Instead of the two-part design, the heat transfer element 13 can also be manufactured in one piece from a deep-drawn, extruded, or extruded profile.

[0048] The heat transfer elements 13 are attached to the ceiling substructure 3 via at least one retaining element 15. Each retaining element 15 supports at least one, preferably a single, heat transfer element 13. The heat transfer elements 13 are attached to the support profile 7 or profiles 7 via the retaining element 15.

[0049] The heat-conducting elements 13 preferably extend transversely to the support profiles 7 to which they are attached. Towards the ceiling cladding elements 2, the heat transfer elements 13 have a preferably flat heat transfer surface which, when the heat exchanger ceiling 1 is installed, preferably rests fully on the upper surface 5. Such a heat transfer surface 16 is created, for example, when the heat transfer elements 13 have an omega-shaped cross-section with wings 13c and the wings 13c of this cross-section are aligned with each other.

[0050] The heat transfer elements 13 are held freely movable in the direction of gravity by the retaining element 15. No elastic spring elements act between the heat-conducting elements 13 and the supporting profile 7. A proximal retaining section P of the retaining element, which has a positive locking arrangement 18a, serves for attachment to the supporting profile. The retaining element 15 is positively connected to the supporting profile 7 via the positive locking arrangement 18a. The at least one heat transfer element 13 is held on the retaining element 15 at a distal retaining section D via a positive locking arrangement 18b. The heat transfer elements 13 are, for example, clipped into the distal retaining section D. The free movement of the heat transfer element 13 in the direction of gravity 17 is effected by the positive locking arrangements 18a and 18b, each of which, alone or together, allows a limited stroke 19.

[0051] In the embodiment of the Fig. 1. The retaining element 15 is constructed from an L-, U-, or T-shaped strip, which is secured against falling by rivet or screw heads (or pin heads) 20. If ceiling cladding elements 2 are missing, the heat transfer surface 16 hangs below the suspended ceiling level 4. The heat transfer elements 13 therefore protrude from the ceiling substructure 3 or the suspended ceiling level 4 in the direction of gravity 17.

[0052] The positive locking arrangement 18a can also allow a clearance 21a transversely to the direction of gravity 17 and transversely to the longitudinal extent of the heat transfer elements 13, in the transverse direction 21.

[0053] To manufacture the heat exchanger ceiling 1, the ceiling substructure 3 with the suspension 11 and the support profiles 7, 8 is first manufactured.

[0054] The retaining elements 15 are then attached to the support profiles 7 using the positive locking arrangement 18. The heat-conducting elements 13 can be pre-mounted on the retaining elements 15. However, it is preferable that the heat-conducting elements 13 are only attached to the ceiling substructure 3 after the retaining elements 15 have been installed.

[0055] As explained above, the heat-conducting elements 13 are located below the suspended ceiling level 4 when the ceiling cladding elements 2 are missing. However, they are movable against the direction of gravity at least to the extent that they can be brought into alignment with the suspended ceiling level 4. When the ceiling cladding elements 2 are attached to the ceiling substructure 3, the heat transfer elements 13 automatically align their heat transfer surface 16 with the top surface 5 of the ceiling cladding elements. Their own weight, especially when carrying the heat transfer fluid 14, is sufficient to ensure that the heat transfer elements 13 are fully in contact with the ceiling cladding elements 2 and that efficient heat transfer is achieved.

[0056] During operation, to heat a room 22, heat transfer fluid 14 at a temperature exceeding the temperature of the room 22 is circulated through the heat transfer elements 13. The heat transfer fluid 14 transfers its heat to the ceiling cladding elements 2 via the heat transfer elements 13, in particular their heat transfer surface 16.

[0057] To cool room 22, a heat transfer fluid 14 is circulated through the heat transfer elements 13, the temperature of which is below that of room 22. In this case, the heat flow is conducted from room 22 via the ceiling cladding elements 2 and the heat transfer elements 13, or rather their heat transfer surface 16, to the heat transfer fluid 14, which carries away the heat and thus cools the room.

[0058] Further embodiments of the invention are described below, with particular emphasis, for the sake of simplicity, on the differences compared to the preceding embodiments. Where individual features are not explicitly described in an embodiment, reference is made to the remaining description.

[0059] In the exemplary embodiment of the Fig. In contrast to the previous embodiment, in this embodiment several heat transfer elements 13 are movably supported independently of one another by the retaining element 15. The positive locking arrangement 18b of the proximal retaining section P comprises one or more hooks 23 which are engaged in the profiles 7. The retaining element 15 has a rod or strip 24 into which the heat transfer elements 13 are engaged via the positive locking arrangement 18b.

[0060] To achieve maximum flexibility, for example in the event of warping 25 of the ceiling cladding elements 2, the entire holding device 15 can be lifted against the direction of gravity 17 and preferably also displaceable in the transverse direction 21. The individual heat transfer elements 13 can also be displaceable independently of one another in the transverse direction 21 relative to the holding element, for example via an elongated hole, transverse to their longitudinal extent. Alternatively or additionally, each heat transfer element 13 can be held movable relative to the holding element 15 against the direction of gravity 17. Alternatively or additionally, the positive locking arrangement 18b can also allow independent tilting 26 of the individual heat transfer elements 13.

[0061] The heat transfer elements 13 are preferably movable and / or tiltable independently of each other against the direction of gravity 17 and / or in the transverse direction 21.

[0062] The design of the retaining element 15 as a rod or strip 24 and the use of hooks 23 is in the exemplary embodiment of the Fig. Example 2 was chosen for illustrative purposes only. Further possibilities can be found in the preceding and following examples.

[0063] The structure and function of the third embodiment are explained below using the following examples: Fig. 3A to 3C explained.

[0064] In this embodiment, the retaining element 15 has a U-shaped cross-section, as can be seen from the Fig. 3B can be seen. A retaining leg 30 rests on the support profile 7 and carries the retaining element 15. The two parallel legs 31, 32, extending in the direction of gravity 17, together with the retaining leg 30 connecting them, form a receptacle 33 for the support profile 7.

[0065] The distance 34 between the legs 31, 32 is preferably greater than the width 35. This results in a clearance 36 in the longitudinal direction 37 of the heat transfer elements 13 between the retaining element 15 and the support profile 7.

[0066] In this embodiment, the positive locking arrangement 18a comprises the retaining leg 30. The positive locking arrangement 18a enables a stroke 19 against the direction of gravity 17.

[0067] A stop 38 of the retaining element 15, overlapping with the support profile 7 in the direction of gravity 17, limits the stroke 19 against the direction of gravity. How Fig. As shown in Figure 3B, stops 38 can be provided on both legs 31, 32, or alternatively on only one leg 31 or 32. The stops 38 are elastically deflectable at least in the transverse direction 21, so that the support profile 7 can be slid past them and engage. At the upper end of the stroke 19, the stop 38 rests against the underside of the support profile 7. In this embodiment, the clearance 19 in the direction of gravity 17 is present only in the proximal holding section P with the positive locking arrangement 18a.

[0068] The positive locking arrangement 18b of the distal retaining section D, with which the heat transfer element 13 is attached to the retaining element 15, is preferably located at the free end of at least one leg 31, 32. It preferably rigidly connects the heat transfer element 13 to the retaining element 15.

[0069] Since the legs 31, 32 are spaced apart from each other in the longitudinal direction 37 of the heat transfer element 13, the heat transfer element 13 is held by two stops spaced apart in the longitudinal direction 37 and is thus prevented from pivoting in the ceiling plane 4 (cf. Fig. 1) secured.

[0070] The legs 31, 32 can each be provided, preferably at their free end, with a shoulder 39 projecting in the longitudinal direction 37, preferably away from the support profile receptacle 33.

[0071] The positive locking arrangement 18b is located on the legs 31, 32 and thus has two stops spaced apart longitudinally 37 from each other, at which the heat transfer element 13 is attached to the retaining element 15. The stops can in particular be designed as recesses 40 in the legs.

[0072] The shoulder 39 is perforated in the transverse direction 21 by the receptacle 40 in the form of a recess, which is also preferably located centrally at the free end of each leg 31, 32. The receptacle 40 is designed to be complementary to a central bulge 41 of the heat-conducting element, in which the hose 13a or pipe section for guiding the heat transfer fluid 14 is typically located. In the present example, the inner contour of the receptacle 40 is adapted to the outer contour of the bulge 41 of the omega-shaped heat transfer element 13. The receptacle 40 is undercut in the direction of gravity so that a positive fit with the heat transfer element 13 can be established.

[0073] An opening plane 40a of the recording 40 extends perpendicular to the longitudinal direction 37.

[0074] The free ends of the legs 31, 32 form contact surfaces 31a, 32a on their undersides for the heat transfer element 13. The heat transfer element 13 rests against these contact surfaces in the assembled state and can thus be aligned.

[0075] The shoulder 39 forms a leaf-spring-shaped spring element 42 at its ends facing the receptacle 40, which, as Fig. 3A and Fig. 3C shows that something extends into the recording. The length 43 of a spring element 42 is at most 70% of the length of the shoulder 39.

[0076] With the heat transfer element 13 installed, the spring element 42 rests in the constriction 45 of the omega-shaped cross-section. The spring element 42 is separated from the rest of the retaining element 15 by a notch or slot 46.

[0077] Preferably, the spring element 42 is slightly deflected when the heat transfer element 13 is mounted, so that, due to its restoring force, it presses the heat transfer element 13 into the receptacle 40 and against the retaining element 15.

[0078] Each mounting 40 can be fitted with two opposing, mutually acting spring elements 42. In a simpler embodiment, however, only a single spring element 42 can be provided per mounting 40.

[0079] The retaining element 15 is manufactured in one piece, specifically as a stamped and bent part. The shoulder 39 can be manufactured as a flange, the stop as a stamped tongue, and the spring elements 42 as spring tongues.

[0080] In the exemplary embodiment of the Fig. 3A to 3C, the retaining element 15 is pushed downwards from above, i.e. from the ceiling 12, over the support profile 7.

[0081] In the Fig. 4, Fig. Figures 5, 6A and 6B show embodiments in which the retaining element 15 can be hooked into the support profile 7 from below.

[0082] The retaining element 15 according to the embodiment of Fig. 4 has an H-shaped cross-section. One parallel to the ceiling plane 4 ( Fig. 1) The connecting leg 47, which connects the two opposing legs 31, 32, is arranged between the positive locking arrangement 18a for the support profile 7 (not shown) or the proximal retaining section P and the distal retaining section D, and the positive locking arrangement 18b for the heat transfer element 13 (not shown). The retaining element 15 can be made from an extruded profile in the illustrated embodiment. If the connecting leg 47 runs obliquely to the ceiling plane 4, it can also be manufactured as a stamped and bent part.

[0083] At the ends of the legs 31, 32 facing the support profile 7, a retaining leg 30 is provided, projecting into the receptacle 33. In the assembled state, this retaining leg 30 grips the top surface or upper edges of the support profile 7 or rests on the support profile 7. The retaining legs 30 are elastically deflectable away from each other to allow insertion of the support profile 7.

[0084] In this embodiment, a separately designed stop 38 can be dispensed with if the connecting leg 47 itself serves as a stop.

[0085] In Fig. Figure 5 shows an embodiment suitable for manufacture as a one-piece stamped and bent part.

[0086] In cross-section, the retaining element 15 is located at Fig. 5 W-shaped. Alternative configurations can also be U- or V-shaped. In this case, the connecting leg 47, which connects the legs 31, 32, is located at the end of the retaining element 15 facing away from the support profile 7 (not shown), on the side of the distal retaining section D. The connecting leg 47 overlaps the receptacles 40 in the legs 31, 32 in the direction (37) of its longitudinal extension, so that it also has an opening 48, aligned with the receptacle 40, through which the heat transfer element 13 extends in the assembled state. The spring element 42 can be arranged in the transition area between the respective leg 31 or 32 and the connecting leg 30. Here, too, the spring element 42 can be formed by a punched tongue.

[0087] The V- or W-shape results from a folded retaining element, a U- or W-shape with curves instead of a bent retaining element.

[0088] For stiffening purposes, as with all other retaining elements 15, beads can be formed in the legs 31, 32, in the retaining leg 30, in the connecting leg 47 and / or at the bending and flexing points. The stop 38 can also be designed as a bead, as can the spring elements 42 and the retaining leg 30 projecting on one side.

[0089] The Fig. 6A and Fig. Figure 6B shows a modification with a multi-part retaining element 15, which, in contrast to, for example, the embodiments of Fig. 3A, Fig. 3B, Fig. 4 and Fig. 5 is not connected to both sides of a U- or box-shaped support profile 7, but only to one side. Accordingly, the retaining element 15 has only one leg 31, which is part of an essentially L-shaped section 50. The L-shaped section 50 limits the receptacle 33 for the support profile 7 in the longitudinal direction 37. The lower leg 47, which is spaced from the support profile 7 by a clearance 19 in the assembled state, serves as a stop 38 that limits relative movement between the support profile 7 and the retaining element 15 along the direction of gravity 17.

[0090] The center of gravity 51 of the retaining element 15 is located in the longitudinal direction 37 opposite the proximal retaining section P and the retaining leg 30 at the free end of the leg 31, offset below the support profile 7 or between the longitudinally spaced receptacles 40. Due to this center of gravity position, the retaining element 15 automatically tilts about the proximal retaining section into its mounting position.

[0091] This is based on the Fig. Figure 6B illustrates: The retaining element 15 is attached to one of the upper longitudinal edges of the support profile 7 by means of the positive locking arrangement 18a of the proximal retaining section P, for example by hooking it in. To hook it in, the distal retaining section D is tilted out of its position below the support profile 7. Subsequently, as indicated by arrow 52, ​​the retaining element 15 is pivoted under the support profile 7 around the longitudinal edge of the support profile 7.

[0092] The retaining tab 46 projects into the support profile 7 by an amount greater than the stroke 19 allowed by the stop 38. This ensures that at the upper end of the stroke 19, when the leg 47 rests against the underside of the support profile 7, the positive locking arrangement 18a cannot disengage from the proximal retaining section P.

[0093] Of course, the design of the Fig. 6A and Fig. 6B instead of leg 47 a separately designed stop 38 may also be provided.

[0094] In the exemplary embodiments of the Fig. 7A, Fig. 7B and Fig. 8 Specially designed heat transfer elements 13 are used. The embodiment of the Fig. 7A and Fig. 7B differs from the preceding embodiments essentially in that the stroke 19 along the direction of gravity 17 is not enabled at the proximal holding section P, but exclusively in the distal holding section D or in the positive locking arrangement 18b. For this purpose, the heat transfer element 13 is held on the holding element 15 in the distal holding section D with play along the direction of gravity 17.

[0095] The receptacle 40 can be provided at its end with inwardly projecting projections 53 into the receptacle. The projections 53 can, in particular, engage a section of the heat transfer element 13 by, for example, projecting slightly into the constriction 45 of the heat transfer element 13, while being spaced apart from the narrowest point 54 of the constriction. The projections 53 can, for example, be formed by spring elements 42.

[0096] To allow movement 19 along the direction of gravity 17, the heat transfer element 13 is spaced from a lower end 55 of the retaining element 15. To prevent the heat transfer element 13 from tilting, it has one, preferably two, guide surfaces 56 opposite each other in the transverse direction 21 and extending perpendicular to the transverse direction, to which complementary guide surfaces 57 of the receptacle 40 are assigned. The guide surfaces 56 can, for example, be realized by lateral flattenings of the protrusion 41, which may already be present.

[0097] The guide surfaces 56, 57 provide forced guidance of the heat transfer element 13 in the receptacle 40 along the direction of gravity 17.

[0098] Alternatively or in addition to the guide surfaces 56, 57, the heat transfer element 13 can also have a guide projection 58 extending along the direction of gravity 17 or perpendicular to the heat transfer surface 16. The guide projection 58 can be located at the top of the bulge 41 or, as shown by dashed lines, on the wings 13c of the heat transfer element that form the heat transfer surface 16. The lateral surfaces of the guide projection 58 form guide surfaces 56. A guide pocket 59, complementary to the guide projection 58 and adjoining the receptacle 40, receives the guide projection 58 during the lifting movement against the direction of gravity 17.

[0099] Since the vertical movement against the direction of gravity 17 is realized at the distal holding section D, the positive locking arrangement 18a can establish a substantially play-free connection between the support profile 7 and the holding element 15. For example, the stop 38 can bear against a lower surface 60 of the support profile 7 with substantially no play or under preload.

[0100] Attention should be paid to a play 21a in transverse direction 21 of the retaining element 15 on the support profile 7.

[0101] The exemplary embodiment of the Fig. Figure 8 shows a multi-part retaining element 15. The retaining element 15 has an upper retaining element 65, which forms the proximal retaining section P and is designed to be attached to the support profile 7. An intermediate piece 66 is arranged between the upper retaining element 65 and the heat-conducting element 13, and is preferably positively connected to both the upper retaining element 65 and the heat-conducting element 13. The distal retaining section D is therefore located at the lower end of the intermediate piece 66.

[0102] The upper retaining element 65 and the intermediate piece 66 are preferably bent and stamped parts, and in particular made of sheet metal. The connection between the upper retaining element 65 and the intermediate piece 66 can be effected by a further positive locking arrangement 18c. For this purpose, the intermediate piece 66 is inserted into the upper retaining element from below. The positive locking arrangement 18c can be configured in one of the above embodiments. The following is shown only by way of example: Fig. Figure 8 shows that the heat transfer element 13 can be provided with additional positive locking elements 67, which are part of the positive locking arrangement 18b of the distal retaining section D. The positive locking elements 67 can, for example, be formed on the wings 13c of the heat transfer element 13 that form the heat transfer surface 16. Undercut ribs or projections can be provided for this purpose on the side facing away from the heat transfer surface 16.

[0103] The intermediate piece 66 can also be positively connected to the protrusion 41 of the heat transfer element 13.

[0104] The intermediate piece 66 is particularly suitable as an adapter if a distance needs to be overcome between the lower end of the upper retaining element 65, which itself can be a retaining element 15, and the ceiling level 4.

[0105] The displacement of the heat transfer element 13 relative to the support profile 7 (not shown) can be enabled by play in the positive locking arrangement 18b and / or in the positive locking arrangement 18c. In particular, a tilting movement 26 about its longitudinal extent may also be possible in the positive locking arrangement 18c.

[0106] Reference sign 1 heat exchanger ceiling 2 ceiling cladding elements 3 Ceiling substructure 4. Lower ceiling level 5 Top side of the ceiling cladding elements 6 Ceiling level 7 transverse support profiles 8 longitudinal support profiles 9 upper level of the ceiling substructure 10 lower level of the ceiling substructure 11 Suspension of the ceiling substructure 12 Ceiling 13 heat transfer elements 13a hose 13b Heat conducting element 13c Wing 14 Heat transfer fluid 15 retaining elements 16 Heat transfer surface 17 Direction of gravity 18a Positive locking arrangement at the proximal holding section, between holding element and support profile 18b Positive locking arrangement at the distal retaining section, between heat transfer element and retaining element 18c Positive locking arrangement between upper retaining element and intermediate piece 19 stroke, displacement against the direction of gravity 20 rivet, pin or screw head 21 Transverse direction 21a Play in a transverse direction Room 22 23 hooks 24 rods or strips 25. Warping of the ceiling cladding elements 26 Tilting the heat transfer element 30 retaining legs 31 lateral thigh 31a Underside of the thigh 31 32 lateral thigh 32a Underside of the thigh 32 33 Mounting for support profiles 34 Distance between the lateral thighs 35 Width of the support profile 36 play in the longitudinal direction 37 Longitudinal direction 38 stops 39 Shoulder 40 Receptacle for heat transfer element in the holding element 40a Opening plane of the recording 40 41 Bulging of the heat transfer element 42 Spring element 43 Length of the spring element 44 Shoulder length 45 Constriction of the heat transfer element 46 slots for spring element 47 Connecting legs 48 Breakthrough 50 L-shaped section 51 Focus 52 Swivel movement 53 projections of the recording 54 narrowest point of the constriction 55 lower end of the retaining element 56 Guide surface on heat transfer element 57 Guide surface on the holding element 58 Leadership Approach 59 guide bag 60 Underside of the support profile 65 upper retaining element 66 Intermediate piece 67 Positive locking element D distal half-section P proximal holding section

Claims

[1] Retaining element (15) for attaching an elongated heat transfer element (13) to a support profile (7) of a ceiling substructure (3) for a heat exchanger ceiling (1), with at least one distal retaining section (D) to which the heat transfer element (13) can be attached, characterized by , that the retaining element (15) is provided with a proximal retaining section (P) which is designed to be attachable to the support profile (7), wherein the proximal retaining section (P) has a positive locking arrangement (18a, 18b) which is designed to engage with the support profile (7) and / or the distal retaining section (D) has a positive locking arrangement (18a, 18b) which is designed to engage with the heat transfer element (13) in a way that is freely and slidably displaceable against gravity. [2] Holding element (15) according to claim 1, characterized by, that the proximal holding section (P) is provided with a holding leg (30) opposite the distal holding section (D) and a stop (38) located between the holding leg (30) and the distal holding section (D), pointing towards the proximal holding section (P). [3] Holding element (15) according to claim 1 or 2, characterized by , that the distal holding section (D) is designed to hold only a single heat transfer element (13). [4] Holding element (15) according to one of claims 1 to 3, characterized by , that the positive locking arrangement (18b) of the distal retaining section (D) has at least two stops spaced apart in the longitudinal direction (37) of the heat transfer element (13). [5] Holding element (15) according to one of claims 1 to 4, characterized by, that a receptacle (40) for the heat transfer element (13) is provided on the distal retaining section (D) and that the receptacle (40) is provided with a spring element (42) at at least one point. [6] Holding element (15) according to claim 5, characterized by , that at least one spring element (42) protrudes into the receptacle (40). [7] Holding element (15) according to claim 5 or 6, characterized by , that the spring element (42) is formed by a spring tongue. [8] Holding element (15) according to one of claims 1 to 7, characterized by that it is manufactured as a one-piece stamped and bent part. [9] Ceiling substructure (3) for attaching ceiling cladding elements (2) in a suspended ceiling level (4) of a heat exchanger ceiling (1), comprising at least one support profile (7), at least one elongated heat transfer element (13) and at least one retaining element (15) according to one of claims 1 to 8, by which the heat transfer element (13) can be attached to the support profile (7), wherein the heat transfer element (13) in a state attached to the support profile (7) projects out of the suspended ceiling level (4) on the side facing away from the support profile (7), wherein the heat transfer element (13) is held by the retaining element (15) in a form-fitting manner so that it is free against gravity and at least limited to being flush with the suspended ceiling level (4). [10] Ceiling substructure (3) according to claim 9, characterized by, that the retaining element (15) is held slidably on the support profile (7) in the fastened state transversely to a direction (37) of the longitudinal extent of the heat transfer element (13). [11] Ceiling substructure (3) according to claim 9 or 10, characterized by , that at least two adjacent heat transfer elements (13) are held to be independently movable perpendicular to the ceiling plane (4). [12] Ceiling substructure (3) according to claim 11, characterized by , that each heat transfer element (13) is assigned a separate holding element (15) on a support profile (7). [13] Ceiling substructure (3) according to any one of claims 9 to 12, characterized by , that the retaining element (15) is slidably attached to the support profile (7) along the support profile (7). [14] Ceiling substructure (3) according to any one of claims 9 to 13, characterized by, that the heat transfer element (13) is held on the holding element (15) at at least two stops spaced apart in the longitudinal direction (37) of the heat transfer element (13).

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