Device for holding heat exchanger tubes

Abstract

Device for receiving heat exchanger tubes (1), comprising a longitudinal profile (2) with several upwardly open tube receptacles (4) extending transversely to the longitudinal axis (3) of the longitudinal profile, wherein each tube receptacle (4) has locking lugs (5) for securing heat exchanger tubes (1) inserted into the tube receptacles (4), characterized in that the longitudinal profile (2) also has several downwardly open tube receptacles (4') extending transversely to the longitudinal axis (3) of the longitudinal profile, wherein the upwardly and downwardly open tube receptacles (4, 4') preferably extend continuously over the width of the longitudinal profile (2).

Description

[0001] The invention relates to a device for receiving heat exchanger tubes, comprising a longitudinal profile with several tube receptacles extending transversely to the longitudinal axis of the profile and open upwards, each tube receptacle having locking lugs for securing heat exchanger tubes inserted into the tube receptacles.

[0002] In connection with the air conditioning of rooms using surface heat exchangers, various mounting rails for the pipes carrying the heat transfer fluid are known. After being laid on formwork, the mounting rails and pipes are embedded in a hardening concrete grout. For example, EP 2679923 B1 discloses mounting rails that comprise two longitudinal profiles running parallel to each other in the longitudinal direction of the rails and which together form several pipe receptacles extending transversely to the longitudinal direction of the rails and open at the top. A disadvantage of such mounting rails, however, is that a uniform distribution of the liquid concrete grout during embedding is hardly achieved due to the predetermined rail geometry, which can lead to the formation of voids or, in the worst case, stress cracks in the hardened concrete.To avoid this, the longitudinal profiles, which are primarily responsible for stability and load-bearing capacity before grouting, have cutouts on their sides opposite the pipe supports, allowing concrete to flow into the profile. Furthermore, the known plastic profiles increase the fire load due to the two parallel longitudinal profiles cast near the ceiling, running at a distance from each other in the longitudinal direction of the rails.

[0003] The invention is therefore based on the objective of creating a stable, walkable and load-bearing device of the type described above, which is characterized by improved casting properties and lower fire load and which allows improved heat input into a concrete ceiling.

[0004] The invention solves the stated problem by providing the longitudinal profile with several downwardly open pipe receptacles, each extending transversely to the longitudinal axis of the profile, wherein the upwardly and downwardly open pipe receptacles extend continuously across the width of the longitudinal profile. By extending the upper and lower pipe receptacles continuously across the width of the longitudinal profile, the tilting stability of the profile is increased to such an extent that it corresponds approximately to a profile known from the prior art, which comprises two longitudinal profiles running parallel to each other in the longitudinal direction of the rail at a distance from one another. If the two longitudinal profiles are omitted and replaced by a central one, the longitudinal profile can be neatly cast in from both sides. The load-bearing capacity is ensured by the pipe receptacles extending continuously across the width of the longitudinal profile.By providing pipe recesses that are open at the top and bottom, thus achieving a higher pipe density, improved heat transfer into a concrete slab is possible. This is particularly important when the temperature difference between the heat transfer fluid flowing through the pipes and the desired concrete temperature needs to be kept as low as possible in order to operate more energy-efficiently with lower supply temperatures.

[0005] For this purpose, it is advantageous if the pipe receptacles are formed by pipe clamps that extend across the width of the longitudinal profile and are open at the top or bottom. These pipe clamps, which clamp the pipes with spring force, ensure proper clamping of the pipes inserted into the receptacles and secure the longitudinal profile against tipping on the construction site until it is grouted.

[0006] To increase the bending stiffness of the longitudinal profile, support struts or surfaces can be provided between the upwardly and downwardly open pipe receptacles, lying along the longitudinal axis of the profile. In particular, the longitudinal profile between the upwardly and downwardly open pipe receptacles can have a substantially T-shaped cross-section, which allows for clean, complete casting of the longitudinal profile up to a mold and to the profile core without air inclusions.

[0007] To ensure adequate support of the longitudinal profile on formwork or similar structures, it is advantageous to assign spacers to the upwardly and / or downwardly open pipe supports to define a distance between the pipe supports and to specific bearing surfaces. This ensures that the longitudinal profile can withstand sufficient loads without damage during construction, and in particular, that it can be walked on. Reinforcements, especially reinforcing mesh, typically rest on these longitudinal profiles.

[0008] If pointed arch-shaped roofs are assigned to the pipe supports that are open upwards and / or downwards on the side facing away from the pipe supports, the load-bearing capacity of the longitudinal profile in the direction of the pipe supports can be significantly increased with simple means.

[0009] For temporarily fixing the longitudinal profile, for example on formwork, the longitudinal profile can have guides for lifting devices running transversely to the longitudinal profile axis and to the pipe mounting axis between adjacent pipe supports in the direction of the longitudinal profile axis.

[0010] If several longitudinal profiles are to be joined to form an extended profile, it is proposed that a snap connector be provided at at least one free end of the longitudinal profile for the form-fit and force-fit engagement of a snap receptacle of an adjacent longitudinal profile.

[0011] If it is to be avoided that the support soles are visible after the formwork of the ceiling has been removed, then the longitudinal profile can be made of a translucent plastic.

[0012] The invention is illustrated in the drawing as an example. It shows Fig. 1 a device according to the invention in an oblique view from below, Fig. 2 the device from Fig. 1 in a reduced side view, Fig. 3 a design variant of the device made of Fig. 2 in side view and Fig. 4 another design variant of the device made of Fig. 2 in side view.

[0013] The device for receiving heat exchanger tubes 1 comprises a longitudinal profile 2 with several upwardly open tube receptacles 4, each extending transversely to the longitudinal axis 3 of the longitudinal profile, wherein each tube receptacle 4 has locking lugs 5 for securing heat exchanger tubes 1 inserted into the tube receptacles 4. The longitudinal profile 2 also has several downwardly open tube receptacles 4', each extending transversely to the longitudinal axis 3 of the longitudinal profile, wherein the upwardly and downwardly open tube receptacles 4, 4' extend continuously across the width of the longitudinal profile 2.

[0014] The pipe receptacles 4 are formed in particular by pipe clamps, clamping clamps with closed outer surfaces, which extend over the width of the longitudinal profile 2 and are open upwards or downwards.

[0015] Between the pipe receptacles 4, 4' which are open upwards and downwards, support struts 6 are provided in particular, which lie in the longitudinal axis 3 of the profile.

[0016] The longitudinal profile 2 can have a substantially T-shaped cross-section between the upwardly and downwardly open pipe receptacles 4, 4'. The upper leg of the T-profile runs between the upwardly open pipe receptacles 4, and the vertical leg projects vertically downwards from the upper leg. Both legs can have openings to allow the longitudinal profile 2 to be completely and cleanly encased in concrete.

[0017] The upwardly and / or downwardly open pipe receptacles 4, 4' can be assigned spacers 7 to specify a distance between the pipe receptacles 4, 4' and to support them on a room surface 8 on specific support bases 9.

[0018] The upwardly and / or downwardly open pipe receptacles 4, 4' can be assigned pointed arch-shaped canopies 10 on the side facing away from the pipe receptacles. These can be part of the spacers and increase the load-bearing capacity of the longitudinal profile 2. Openings may also be provided between the pointed arch-shaped canopies 10 and the pipe receptacles 4, 4'.

[0019] The longitudinal profile 2 can have lifting guides 12 extending transversely to the longitudinal profile axis 3 and the pipe support axis 11 between adjacent pipe supports 4, 4'. The longitudinal profile can be fixed to formwork by means of nails or the like inserted into these lifting guides 12. In particular, the corresponding lifting guides 12 can be provided between groups, especially groups of three, of adjacent pipe supports 4, 4'. 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] EP 2679923 B1

[0002]

Claims

[1] Device for receiving heat exchanger tubes (1), comprising a longitudinal profile (2) with several upwardly open tube receptacles (4) extending transversely to the longitudinal axis (3) of the longitudinal profile, wherein each tube receptacle (4) has locking lugs (5) for securing heat exchanger tubes (1) inserted into the tube receptacles (4), characterized by , that the longitudinal profile (2) also has several downwardly open pipe receptacles (4') extending transversely to the longitudinal profile longitudinal axis (3), wherein the upwardly and downwardly open pipe receptacles (4, 4') preferably extend continuously over the width of the longitudinal profile (2). [2] Device according to claim 1 characterized by , that the pipe receptacles (4, 4') are formed by pipe clamps extending across the width of the longitudinal profile (2), open upwards or downwards. [3] Device according to claim 1 or 2, characterized by, that support struts (6) are provided between the upwardly and downwardly open pipe receptacles (4, 4') which lie in the longitudinal profile axis (3). [4] Device according to any one of claims 1 to 3, characterized by , that the longitudinal profile (2) between the upwardly and downwardly open pipe receptacles (4, 4') has an essentially T-shaped profile cross-section. [5] Device according to any one of claims 1 to 4, characterized by , that spacers (7) are assigned to the upwardly and / or downwardly open pipe receptacles (4, 4') to specify a distance between the pipe receptacles (4, 4') and to support them on a room surface (8) to specific support bases (9). [6] Device according to any one of claims 1 to 5, characterized by , that pointed arched canopies (10) are assigned to the upwardly and / or downwardly open pipe receptacles (4, 4') on the side opposite the pipe receptacle. [7] Device according to any one of claims 1 to 6, characterized by , that the longitudinal profile (2) has lifting guides (12) extending in the direction of the longitudinal profile longitudinal axis (3) between adjacent pipe supports (4, 4') transverse to the longitudinal profile longitudinal axis (3) and to the pipe support axis (11). [8] Device according to any one of claims 1 to 7, characterized by , that at least one free end of the longitudinal profile (2) is provided a snap connector for positive and force-locking engagement of a snap receptacle of an adjacent longitudinal profile (2). [9] Device according to any one of claims 1 to 8, characterized by , that the longitudinal profile (2) is made of a translucent plastic.

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