Prefabricated capillary tube heat exchanger element for surface temperature control, corresponding production method, and prefabricated capillary tube heat exchanger element assembly
The prefabricated capillary tube heat exchanger element with clamped collector tubes and sloping transition areas addresses installation challenges, enabling easy and stable surface temperature control with flexible design options and efficient heat transfer.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-09-11
- Publication Date
- 2026-03-19
AI Technical Summary
Existing capillary tube mats for surface temperature control in radiant heating systems are difficult for non-experts to install and often have high weight or thickness, limiting their practical application.
A prefabricated capillary tube heat exchanger element design featuring clamped collector tubes and capillary tubes with a sloping transition area between grooves, allowing for a compact, stable, and lightweight structure that can be easily installed and offers design flexibility, with automated manufacturing processes to compensate for manufacturing tolerances.
The design facilitates easy installation by non-experts, provides a stable and lightweight capillary tube heat exchanger, and allows for variable design options while ensuring effective heat transfer and preventing buckling or pinching of capillary tubes.
Smart Images
Figure EP2025075867_19032026_PF_FP_ABST
Abstract
Description
[0001] Description
[0002] title
[0003] Capillary tube heat exchanger prefabricated element for surface temperature control, corresponding manufacturing process and capillary tube heat exchanger prefabricated element arrangement
[0004] The present invention relates to a capillary heat exchanger prefabricated element for surface temperature control, a corresponding manufacturing process and a capillary heat exchanger prefabricated element arrangement.
[0005] State of the art
[0006] Temperature control of rooms using radiant heating systems with temperature-regulating fluids now plays a significant role in the design of new and existing buildings. A large heat transfer surface and low flow temperatures are particularly suitable for systems with heat pumps and for renewable energy systems.
[0007] It is generally known that capillary tube mats are used for surface temperature control in rooms, i.e., for cooling and / or heating. A capillary tube mat is a well-known, flat composite of thin tubes (capillaries) with a collector pipe at each end.
[0008] These capillary tube mats distribute heat effectively and in a space-saving manner just below the surface of walls, ceilings, or floors. They thus follow a natural model, as fine blood vessels beneath the skin's surface also regulate body temperature in the human body.
[0009] A capillary tube mat is described, for example, in DE 44 33 392 A1. In this design, the capillary tube mat comprises a multitude of capillary tubes arranged perpendicular to one or more collector tubes, through which a temperature-controlled working medium (usually water) flows during operation. The capillary and collector tubes are made of a plastic that is readily thermally weldable, thus enabling a secure, form-fitting connection between the capillary and collector tubes by welding. WO 98 / 05905 discloses a capillary tube heat exchanger construction plate with a rigid, lightweight, in particular foamed, base plate in which parallel capillaries are inserted in numerous parallel grooves and covered with a thin layer of a concrete mixture containing embedded, interconnected reinforcing fibers or a reinforcing fiber mat.
[0010] It is particularly well known to apply capillary tube mats directly to a surface and cover them with cover plates. Prefabricated capillary tube heat exchanger elements are also known, which feature a sandwich construction consisting of a gypsum plasterboard with a capillary tube mat embedded in polystyrene thermal insulation.
[0011] The well-known systems with capillary tube mats are often difficult for non-experts to install; in particular, corresponding prefabricated capillary tube heat exchanger elements have a high weight or thickness.
[0012] Disclosure of the invention
[0013] The present invention provides a prefabricated capillary tube heat exchanger element for surface temperature control according to claim 1, a corresponding manufacturing method according to claim 18 and a prefabricated capillary tube heat exchanger element arrangement according to claim 23.
[0014] Preferred further training courses are the subject of the respective sub-claims.
[0015] Advantages of the invention
[0016] The underlying idea of the present invention is that the first collecting tube is clamped in the first transverse groove by means of a first clamping device, and the second collecting tube is clamped in the second transverse groove by means of a second clamping device, such that the collecting tubes and the capillary tubes run freely on the first main surface, with the capillary tubes being under tensile stress. On the first main surface, a transition area is provided between the longitudinal grooves and the first transverse groove, and between the longitudinal grooves and the second transverse groove. This transition area has a sloping section between the longitudinal grooves and the transverse grooves, over which the clamped capillary tubes run, so that the capillary tubes have a sloping end section corresponding to the sloping section in the direction of the first and second collecting tubes.The inventive capillary tube heat exchanger prefabricated element for surface temperature control according to claim 1 and the corresponding manufacturing method according to claim 18, as well as the capillary tube heat exchanger prefabricated element arrangement according to claim 23, thus allow for the provision of a compact, stable, and lightweight capillary tube heat exchanger prefabricated element that can be easily installed even by non-experts and offers variable design options on the exposed first main surface, e.g., by plastering, tiling, or cladding with any other heat-conducting covering material. The special design of the clamping of the manifold tubes and the resulting tensile stress acting on the capillary tubes result in a stable composite without manufacturing tolerance effects.The sloping section between the longitudinal and transverse grooves, over which the clamped capillary tubes run, gives the tensile stress a component parallel to the first main surface and a component perpendicular to the first main surface. This sloping section also prevents the capillary tubes from buckling or pinching at the edge of the transverse grooves during clamping.
[0017] In particular, the manufacturing process according to the invention facilitates automated, reliable production, whereby tolerances of the insulation carrier plate and the capillary tube mat can be compensated for by the steps of stretching and re-stretching the capillary tubes after proper insertion, and at the same time an appropriate tensile stress can be set.
[0018] According to a preferred embodiment, the sloping area has one or more steps. These can be easily produced by milling, sawing, or similar processes.
[0019] According to a further preferred embodiment, the sloping area has at least one inclined surface. This enables a full-surface, form-fitting contact of the capillary tubes.
[0020] According to another preferred embodiment, the capillary tubes are essentially flush with the first main surface, while the collector tubes are essentially flush with or recessed relative to the first main surface. This enables flush stacking and optimal heat transfer.
[0021] According to a further preferred embodiment, the first end face extends along the first collector pipe and the second end face extends along the second collector pipe, wherein the connection area(s) to the first collector pipe are located on the first end face and / or the connection area(s) to the second collector pipe are located on the second
[0022] The front surface is provided. This offers advantages for the installation of external cables.
[0023] According to a further preferred embodiment, the connection area(s) to the first manifold and / or the connection area(s) to the second manifold are recessed in respective through-holes provided from the first end face and / or on the second end face, wherein preferably respective connectors for connection to an associated external line are housed in the through-holes. Thus, all external connections can be integrated into the prefabricated capillary tube heat exchanger assembly without protruding beyond the insulation support plate, which facilitates packaging, transport, and assembly, and thus avoids potential damage.
[0024] According to a further preferred embodiment, a first through-hole is provided on the first end face, opening into the first transverse groove, and a second through-hole is provided on the first end face, also opening into the first transverse groove. The first manifold has a first connection nozzle opening into the first through-hole, and a second connection nozzle opening into the second through-hole. A partition is provided in the first manifold between the first and second connection nozzles. In this way, all external connections can be provided on the first end face.
[0025] According to a further preferred embodiment, a first through-hole is provided on the first end face, opening into the first transverse groove, and a second through-hole is provided on the second end face, opening into the second transverse groove, wherein the first manifold has a first connecting piece opening into the first through-hole, and wherein the second manifold has a second connecting piece opening into the second through-hole. In this way, all external connections can be provided on the first and second end faces.
[0026] According to a further preferred embodiment, the insulation carrier board is a wood fiberboard, in particular a wood fiberboard with a density in the range of 130 kg / m³. 3 up to 250 kg / m² 3 , preferably 150 kg / m² 3This ensures sufficient stability and insulation performance and facilitates processing and handling. According to another preferred embodiment, the insulation support panel is rectangular and has a length ranging from 100 cm to 220 cm, a width ranging from 45 cm to 120 cm, and a thickness ranging from 3 cm to 8 cm. This facilitates installation and allows it to be adapted to common building grids, e.g., a 62.5 cm grid.
[0027] According to a further preferred embodiment, the capillary tube mat is made of polyethylene or polypropylene. These materials are durable and elastic over long periods and are particularly well suited for the manufacturing process according to the invention, involving stretching and re-stretching, and for heating applications.
[0028] According to another preferred embodiment, the capillary tubes have a lateral spacing of 10 mm to 50 mm. This results in effective use of the surface area for temperature control.
[0029] According to another preferred embodiment, the capillary tubes have an outer diameter in the range of 3 mm to 5 mm and / or a wall thickness in the range of 0.3 mm to 0.8 mm and / or a spacing of 10 mm to 30 mm. This allows for a high packing density at a relatively low weight.
[0030] According to a further preferred embodiment, a first connector for connecting to a first external line is located in the first through-hole, and a second connector for connecting to a second external line is located in the second through-hole. This facilitates external piping.
[0031] According to a further preferred embodiment, the first clamping device and / or the second clamping device comprises one or more clamping straps, in particular cable ties, which are guided around the circumference of the first or second manifold and through the insulation support plate. This allows for simple and very effective clamping of the manifolds.
[0032] According to a further preferred embodiment, the first clamping device and / or the second clamping device has an adhesive area. This facilitates assembly when using suitable materials for the insulation support board.
[0033] According to a further preferred embodiment, a further capillary tube mat through which a temperature control medium flows is provided, which has a third collecting tube and a fourth collecting tube and a plurality of further capillary tubes which are connected to the collecting tubes by welding in a metallurgical bond, wherein the further capillary tubes have a smaller diameter than the collecting tubes and run perpendicular to the collecting tubes, wherein the insulation support plate has on the second main surface a third transverse groove for receiving the third collecting tube and a fourth transverse groove for receiving the fourth collecting tube as well as a plurality of further longitudinal grooves extending perpendicular to the transverse grooves for receiving the further capillary tubes, wherein the transverse grooves have a greater depth extension into the insulation support plate than the further longitudinal grooves.wherein the third collecting tube is clamped in the third transverse groove by means of a third clamping device and the fourth collecting tube is clamped in the fourth transverse groove by means of a fourth clamping device such that the collecting tubes and the capillary tubes run freely on the second main surface, wherein the capillary tubes are under tensile stress, wherein a respective transition area is provided on the second main surface between the longitudinal grooves and the third transverse groove and between the longitudinal grooves and the fourth transverse groove, which has a respective area sloping down in the direction of the transverse grooves between the longitudinal grooves and the transverse grooves, over which the clamped capillary tubes run, so that the capillary tubes have a respective end section sloping down in the direction of the third and fourth collecting tubes corresponding to the sloping area,and wherein one or more connection areas to the third manifold and / or one or more connection areas to the fourth manifold are formed in the insulation support panel. In this way, double-sided capillary tube heat exchanger prefabricated elements for surface temperature control can be provided.
[0034] According to a further preferred embodiment, in the inventive method, the capillary tubes are expanded by heating the capillary tube mat by passing the temperature control medium through the capillary tube mat, and re-expanded by cooling the capillary tube mat by blowing the temperature control medium out of the capillary tube mat. This is very effective, as very uniform heating can be achieved. In addition, a leak test of the capillary tube mat can be performed simultaneously.
[0035] According to a further preferred embodiment, in the inventive method, the stretching of the capillary tube mat and the re-stretching of the capillary tubes are carried out using a clamping frame in which the first and second collector tubes are clamped. This facilitates the automation of production. According to a further preferred embodiment, in the inventive method, the first collector tube is inserted into the first transverse groove and the second collector tube is inserted into the second transverse groove using the clamping frame. This further facilitates the automation of production.
[0036] According to a further preferred embodiment, in the inventive method the capillary tubes are pressed into the longitudinal grooves by rolling. This makes it possible to achieve a particularly flat main surface.
[0037] Brief description of the drawings
[0038] The present invention will be explained in more detail below with reference to the exemplary embodiments shown in the schematic figures of the drawings.
[0039] They show:
[0040] Fig. 1 a)-f) schematic representations of an insulating support plate of a capillary tube heat exchanger prefabricated element according to a first embodiment of the present invention, namely Fig. 1a) in the raw state in a top view of the first main surface, Fig. 1b) in the raw state in cross-section along line AA' of Fig. 1, Fig. 1c) in a top view of the first main surface after creating the longitudinal and transverse grooves and the through holes, Fig. 1d) in cross-section along line AA' of Fig. 1c), Fig. 1e) in cross-section along line BB' or CC' of Fig. 1c), and Fig. 1f) in a top view of the first end face;
[0041] Fig. 2a)-c) schematic representations of a capillary tube mat of a capillary tube heat exchanger prefabricated element according to the first embodiment of the present invention, namely Fig. 2a) in planar cross-section, Fig. 2b) in cross-section along line AA' of Fig. 2a), and in cross-section along line BB' of Fig. 2a);
[0042] Fig. 3 a),b) schematic partial views of the insulation support plate and the capillary tube mat of the capillary tube heat exchanger prefabricated element according to the first embodiment of the present invention, namely Fig. 3a) in a vertical cross-section through a capillary tube and Fig. 3b) in an enlarged vertical cross-section through the capillary tube with inserted connector; Fig. 4 a schematic partial view of the insulation support plate and the capillary tube mat of the capillary tube heat exchanger prefabricated element according to the first embodiment of the present invention in a vertical cross-section spaced parallel to a capillary tube with attached clamping device;
[0043] Fig. 5 shows a schematic representation of the capillary tube heat exchanger assembly according to the first embodiment of the present invention in a top view of the first main surface;
[0044] Fig. 6 shows a flowchart to illustrate a method for manufacturing a capillary tube heat exchanger prefabricated component according to a second embodiment of the present invention;
[0045] Fig. 7 shows a schematic cross-sectional representation of a clamping frame for use in the method for manufacturing a capillary tube heat exchanger prefabricated component according to the second embodiment of the present invention;
[0046] Fig. 8 shows a schematic representation of an insulation support plate of a capillary tube heat exchanger prefabricated element according to a third embodiment of the present invention in a top view of the first main surface after creating the longitudinal and transverse grooves and the through holes;
[0047] Fig. 9 shows a schematic representation of a capillary tube mat of a capillary tube heat exchanger prefabricated element according to the third embodiment of the present invention in planar cross-section;
[0048] Fig. 10 shows a schematic representation of the capillary tube heat exchanger assembly according to the third embodiment of the present invention in a top view of the first main surface;
[0049] Fig. 11 a),b) schematic representations of a capillary tube heat exchanger prefabricated element according to a fourth embodiment of the present invention, namely Fig.
[0050] 11a) in vertical cross-section and Fig. 11b) in top view of the second main surface; Fig. 12a)-c) schematic vertical cross-sectional views of capillary tube heat exchanger prefabricated element assemblies according to further embodiments of the present invention;
[0051] Fig. 13 shows a schematic partial representation of the insulation support plate and the capillary tube mat of the capillary tube heat exchanger prefabricated element according to a fifth embodiment of the present invention in an enlarged vertical cross-section through the capillary tube with inserted connector;
[0052] Fig. 14 shows a schematic partial representation of the capillary tube mat of the capillary tube heat exchanger prefabricated element according to a sixth embodiment of the present invention in vertical cross-section, spaced parallel to a capillary tube with an attached clamping device; and
[0053] Fig. 15 shows a schematic partial representation of the insulation support plate and the capillary tube mat of the capillary tube heat exchanger prefabricated element according to a seventh embodiment of the present invention in an enlarged vertical cross-section through the capillary tube.
[0054] In the figures, identical reference symbols denote identical or functionally equivalent elements.
[0055] Figs. 1 a)-f) are schematic representations of an insulating support plate of a capillary tube heat exchanger prefabricated element according to a first embodiment of the present invention, namely Fig. 1a) in the raw state in a top view of the first main surface, Fig. 1b) in the raw state in cross-section along line AA' of Fig. 1, Fig. 1c) in a top view of the first main surface after creating the longitudinal and transverse grooves and the through holes, Fig. 1d) in cross-section along line AA' of Fig. 1c), Fig. 1e) in cross-section along line BB' or CC' of Fig. 1c), and Fig. 1f) in a top view of the first end face.
[0056] In Fig. 1 a)-f), reference numeral 1 denotes an insulating support plate 1, which has a first main surface TS and an opposite second main surface DS, a first end surface S1 and a second opposite end surface S2, and a first side surface L1 and a second opposite second side surface L2.
[0057] In the described embodiments, the insulation support plate 1 is a
[0058] Wood fiberboard, in particular a wood fiberboard with a density in the range of 130 kg / m³ 3 up to 250 kg / m² 3 , preferably 150 kg / m² 3 This facilitates processing and handling. However, other materials can also be used that can be processed accordingly and have comparable insulating and strength properties.
[0059] The insulation support panel is rectangular and has a length (I) ranging from 100 cm to 220 cm, a width (b) ranging from 45 cm to 120 cm, and a thickness (d) ranging from 3 cm to 8 cm. This facilitates installation and allows it to be adapted to common building grids, e.g., a 62.5 cm grid.
[0060] According to Fig. 1 c)-f), the first main surface is processed from the raw state according to Fig. 1a), b) to accommodate a capillary tube mat 5 through which a temperature control medium flows, as shown in Fig. 2a)-c).
[0061] According to Fig. 2a)-c), the capillary tube mat 5 has a first collecting tube 7 and a second collecting tube 8 and a plurality of capillary tubes 6a-6n, wherein the capillary tubes 6a-6n have a smaller diameter than the collecting tubes 7, 8 and run perpendicular to the collecting tubes 7, 8 and are metallurgically connected to the collecting tubes 7, 8 by welding. In the present example, n is between 20 and 60.
[0062] For example, by sawing, a first transverse groove 2 for receiving the first collector pipe 8 and a second transverse groove 3 for receiving the second collector pipe 8 are formed on the first main surface TS, as shown in Fig. 1 c)-f). The transverse grooves 2, 3 have essentially the same width or a slightly smaller width (clamping effect) as the diameter of the collector pipes 7, 8, and the same or a slightly greater depth (e.g. +0.5 mm) than the diameter of the collector pipes 7, 8.
[0063] For example, by sawing, a plurality of longitudinal grooves 4a-4n extending perpendicular to the transverse grooves 2, 3 are formed on the first main surface TS, according to Fig. 1 c)-f) to accommodate the capillary tubes 6a-6n. The saw cut can either extend to the transverse grooves 2, 3 or beyond to the end faces S1, S2, the latter potentially simplifying the manufacturing process.
[0064] The longitudinal grooves 4a-4n have essentially the same width or a slightly smaller width (clamping effect) as the diameter of the capillary tubes 6a-6n and essentially the same depth as the diameter of the capillary tubes 6a-6n, with the transverse grooves 2, 3 having a greater depth extension into the insulation support plate 1 than the longitudinal grooves 4a-4n. The insulation support plate 1 has a first end surface S1 along the first collector tube 2 and a second end surface S2 along the second collector tube 3. A first and a second connection area AB1, AB2 to the first collector tube 2 are formed on the first end surface S1 by drilling.
[0065] In particular, a first through-hole 16a is provided on the first end face S1, which opens into the first transverse groove 2, and a second through-hole 16b is provided on the first end face S1, which also opens into the first transverse groove 2. Thus, the connection areas AB1 and AB2 can be provided recessed in the through-holes 16a and 16b.
[0066] Figs. 2a)-c) are schematic representations of a capillary tube mat of a capillary tube heat exchanger prefabricated element according to the first embodiment of the present invention, namely Fig. 2a) in planar cross-section, Fig. 2b) in cross-section along line AA' of Fig. 2a), and in cross-section along line BB' of Fig. 2a).
[0067] The basic structure of the capillary tube mat 5 has already been explained above. Typically, the capillary tube mat 5 is made of polyethylene or polypropylene. In the present embodiment, the capillary tubes have a lateral spacing of 10 mm to 50 mm. Furthermore, the capillary tubes have an outer diameter of 3 mm to 5 mm and / or a wall thickness of 0.3 mm to 0.8 mm. Thus, typically n = 10–60 capillary tubes are provided, spaced 10 mm to 30 mm apart.
[0068] The first collector pipe 2 has, on one side, a first connection 9a which, when inserted, opens into the first through-hole 16a, and, on the other side, a second connection 9b which, when inserted, opens into the second through-hole 16b. A partition 10 is provided in the first collector pipe 2 between the first and second connection 9a, 9b, which allows an inlet, e.g., at the first connection 9a, and an outlet, e.g., at the second connection 9b, to be provided at the first end face.
[0069] Fig. 3 a),b) are schematic partial representations of the insulation support plate and the capillary tube mat of the capillary tube heat exchanger prefabricated element according to the first embodiment of the present invention, namely Fig. 3a) in a vertical cross-section through a capillary tube and Fig. 3b) in an enlarged vertical cross-section through the capillary tube with inserted connector, and Fig. 4 is a schematic partial representation of the insulation support plate and the capillary tube mat of the capillary tube heat exchanger prefabricated element according to the first embodiment of the present invention in a vertical cross-section spaced parallel to a capillary tube with attached clamping device.
[0070] According to Fig. 3 a), b) and Fig. 4, the first collector pipe 7 is clamped in the first transverse groove 2 by means of a first clamping device 15a in the form of several cable ties, e.g., three cable ties distributed along the length of the collector pipe 7, and the second collector pipe 8 is clamped in the second transverse groove 3 by means of a second clamping device 15a in the form of several cable ties, e.g., three cable ties distributed along the length of the collector pipe 8. The cable ties are guided through corresponding bores L1, L2 in the insulation support plate 1.
[0071] The first collecting tube 2 is clamped in the first transverse groove 2 by means of a first clamping device 15a and the second collecting tube 3 is clamped in the second transverse groove 3 by means of a second clamping device 15a such that the collecting tubes 7, 8 and the capillary tubes 6a-6n run freely on the first main surface TS, wherein the capillary tubes 6a-6n are under tensile stress, which has a component parallel to the first main surface and a component perpendicular to the first main surface.
[0072] With reference to Fig. 3a), b), a respective transition area UB is provided on the first main surface TS between the longitudinal grooves 4a-4n and the first transverse groove 2 and between the longitudinal grooves 4a-4n and the second transverse groove 3.
[0073] The transition areas UB at the first and second transverse grooves 2, 3 each have a sloping area ST, here a step ST, between the longitudinal grooves 4a-4n and the transverse grooves 2, 3, over which the clamped capillary tubes 6a-6n run, so that the capillary tubes 6a-6n have a respective end section 20 sloping in the direction of the first and second collector tubes 2, 3, corresponding to the sloping area ST. This is shown in simplified form in Fig. 3a), b) for both end surfaces S1, S2 and only for the capillary tubes 6b, 6n-1.
[0074] In particular with reference to Fig. 3a), tensile stresses can be absorbed at the edge of the transverse grooves 2, 3.
[0075] Further, with reference to Fig. 3b), a connector 18a, 18b for connection to an associated external line can be accommodated in the through-holes 16a, 16b. Fig. 5 is a schematic representation of the capillary tube heat exchanger assembly according to the first embodiment of the present invention in a top view of the first main surface.
[0076] The compact cuboid shape of the capillary tube heat exchanger prefabricated element 100 according to the first embodiment is clearly recognizable without protruding parts or connections.
[0077] Fig. 6 is a flowchart to illustrate a method for manufacturing a capillary tube heat exchanger prefabricated component according to a second embodiment of the present invention.
[0078] In one step SO, the insulation carrier plate 1 is provided in its raw state and the capillary tube mat 5 is provided.
[0079] In step S1, the first transverse groove 2 is formed to accommodate the first collector pipe 8 and the second transverse groove 3 to accommodate the second collector pipe 8, as well as the plurality of longitudinal grooves 4a-4n running perpendicular to the transverse grooves 2, 3 to accommodate the capillary tubes 6a-6n and the sloping areas ST on the first main surface TS of the insulation carrier plate 1, as well as the formation of the connection areas AB1 , AB2.
[0080] The transverse grooves 2 and 3 are milled, and the longitudinal grooves 4a-4n are sawn, e.g., using a multi-blade circular saw. If necessary, the longitudinal grooves 4a-4n can also be milled.
[0081] The sloping areas ST are formed, for example, by sawing together with the longitudinal grooves 4a-4n, whereby the saw is lowered accordingly to form the exact shape of the sloping areas ST. Alternatively, the sloping areas ST can be formed by milling, in which case they run continuously in the width direction of the insulation carrier board.
[0082] In step S2, the first collector tube 2 is inserted into the first transverse groove 2, and in step S3, the first collector tube 2 is clamped in the first transverse groove 2 using the first clamping device 15a.
[0083] In step S4, the capillary tubes 6a-6n are stretched longitudinally by heating the capillary tube mat 5 through which the temperature control medium is passed. It is assumed that the capillary tubes 6a-6n are initially shorter than the longitudinal grooves 4a-4n. This allows the length of the capillary tubes 6a-6n to be precisely adjusted to the length of the longitudinal grooves 4a-4n.
[0084] In step S5, the second manifold 3 is inserted into the second transverse groove 3, and in step S6, the second manifold 3 is clamped in the second transverse groove 3 using the second clamping device 15a.
[0085] In step S7, the capillary tubes 6a-6n are stretched back in the longitudinal direction, whereby the stretching is carried out by cooling the capillary tube mat 5 by blowing the temperature control medium out of the capillary tube mat 5 using compressed air.
[0086] Optionally, an extended leak test can be carried out here, for example by increasing the pressure of the temperature control medium or the compressed air and measuring the pressure profile over time.
[0087] Finally, in step S8, the capillary tubes 6a-6n are pressed into the longitudinal grooves 4a-4n to eliminate any remaining unevenness, whereby the pressing and leveling of the capillary tubes 6a-6n into the longitudinal grooves 4a-4n is carried out by rolling or brushing.
[0088] Fig. 7 is a schematic cross-sectional representation of a clamping frame for use in the method for manufacturing a capillary tube heat exchanger prefabricated component according to the second embodiment of the present invention.
[0089] The expansion of the capillary tubes 6a-6n in step S4 and the re-expansion of the capillary tubes 6a-6n in step S7 can alternatively be carried out using a clamping frame SR, into which the first and second collector tubes 7, 8 are clamped. The insertion of the first collector tube 2 into the first transverse groove 2 and the insertion of the second collector tube 3 into the second transverse groove 3 can also be carried out using the clamping frame SR.
[0090] An exemplary clamping frame SR has a first frame element 200a and a second frame element 200b, which in turn have a first clamping claw 201a or a first clamping rack and a second clamping claw 201b or a second clamping rack, into which the first collecting tube 7 and the second collecting tube 8, respectively, are clamped. The first frame element 200a and the second frame element 200b are slidable relative to each other in the plane of the capillary tube mat, so that the expansion of the capillary tubes 6a-6n can be carried out automatically and purely mechanically without additional heating.
[0091] The insertion of the first collector tube 2 into the first transverse groove 2 and the insertion of the second collector tube 3 into the second transverse groove 3 can be carried out via a corresponding suspension device AH of the tension frame SR.
[0092] Fig. 8 is a schematic representation of an insulation support plate of a capillary tube heat exchanger prefabricated element according to a third embodiment of the present invention in a top view of the first main surface after the creation of the longitudinal and transverse grooves and the through holes, Fig. 9 is a schematic representation of a capillary tube mat of a capillary tube heat exchanger prefabricated element according to the third embodiment of the present invention in a planar cross-section, and Fig. 10 is a schematic representation of the capillary tube heat exchanger prefabricated element according to the third embodiment of the present invention in a top view of the first main surface.
[0093] In contrast to the first embodiment, a first through hole 16a is provided on the first end face S1, which opens into the first transverse groove 2, and a second through hole 17b is provided on the second end face S2, which opens into the second transverse groove 3.
[0094] The first collector pipe 2 has a first connecting piece 9a which, when installed, opens into the first through-hole 16a, and the second collector pipe 3 has a second connecting piece 9b' which, when installed, opens into the second through-hole 17b.
[0095] Thus, an AB1 is provided on the first collector pipe 2 at the first end surface S1 and a connection area AB2' is provided on the second collector pipe 3 at the second end surface S2, which can be designed according to the first embodiment.
[0096] Otherwise, the capillary tube heat exchanger prefabricated element 100a according to the third embodiment is designed analogously to the first embodiment.
[0097] Fig. 11 a), b) shows schematic representations of a capillary tube heat exchanger assembly according to a fourth embodiment of the present invention, namely Fig. 11 a) in vertical cross-section and Fig. 11 b) in top view of the second main surface. The capillary tube heat exchanger assembly 100b according to the fourth embodiment has a further capillary tube mat 5a through which a temperature control medium flows, which has a third manifold 7a and a fourth manifold 8a and a plurality of further capillary tubes 60a-60n which are metallurgically connected to the manifolds 7a, 8a by welding, wherein the further capillary tubes 60a-60n have a smaller diameter than the manifolds 7a, 8a and run perpendicular to the manifolds 7a, 8a.
[0098] The insulation support plate 1 has on the second main surface DS a third transverse groove 2a for receiving the third collector tube 8a and a fourth transverse groove 3a for receiving the fourth collector tube 8a as well as a plurality of further longitudinal grooves 40a-40n perpendicular to the transverse grooves 2a, 3a for receiving the further capillary tubes 60a-60n, wherein the transverse grooves 2a, 3a have a greater depth extension into the insulation support plate 1 than the further longitudinal grooves 40a-40n.
[0099] The third collecting tube 2a is clamped in the third transverse groove 2a by means of a third clamping device 150a and the fourth collecting tube 3 is clamped in the fourth transverse groove 3a by means of a fourth clamping device 150b such that the collecting tubes 7a, 8a and the capillary tubes 60a-60n run freely on the second main surface DS, with the capillary tubes 60a-60n being under tensile stress.
[0100] On the second main surface DS, a respective transition area LIB, as previously explained, is provided between the longitudinal grooves 40a-40n and the third transverse groove 2a and between the longitudinal grooves 40a-40n and the fourth transverse groove 3a, which has a respective area ST sloping in the direction of the transverse grooves 2a, 3a between the longitudinal grooves 40a-40n and the transverse grooves 2a, 3a, over which the clamped capillary tubes 60a-60n run, so that the capillary tubes 60a-60n have a respective end section 20 sloping in the direction of the third and fourth collector tube 2a, 3a in accordance with the sloping area ST.
[0101] A connection area ABT to the third collector pipe 2a and a connection area AB2' to the third collector pipe are recessed in respective through holes 160a, 160b, which are provided on the first end surface S1 (alternatively e.g. on the second end surface S2).
[0102] Thus, the structure on the second main surface DS is completely analogous to the structure on the first main surface TS, which is consistent with the first to third embodiments. Modifications according to the first to third embodiments can also be made on the second main surface DS.
[0103] Figs. 12a)-c) are schematic vertical cross-sectional views of capillary tube heat exchanger prefabricated element arrangements according to further embodiments of the present invention.
[0104] According to Figs. 12a)-c), prefabricated capillary tube heat exchanger elements 100, 100a, 100b of the previously described embodiments are positively fitted onto a surface FL, i.e., a ceiling surface, a wall surface, or a floor surface, of a building or a device to be heated or cooled, in particular laterally flush, with only one prefabricated capillary tube heat exchanger element 100, 100a, 100b shown in each figure. At least some of the prefabricated capillary tube heat exchanger elements 100, 100a, 100b can also be stacked.
[0105] According to Fig. 12a), the capillary tube mat 5 points away from the surface FL, according to Fig. 12b), the capillary tube mat 5 points towards the surface FL, and according to Fig. 12c), one capillary tube mat 5 points away from the surface FL and one capillary tube mat 5a points towards the surface FL.
[0106] Fig. 13 shows a schematic partial representation of the insulation support plate and the capillary tube mat of the capillary tube heat exchanger prefabricated element according to a fifth embodiment of the present invention in an enlarged vertical cross-section through the capillary tube with inserted connector.
[0107] The representation of Fig. 13 is in complete analogy to the representation of Fig. 3b).
[0108] In contrast to Fig. 3b), according to the fifth embodiment, the through holes 16a', 16b' are positioned obliquely on the first / second end face S1, S2, extending towards the first main surface TS. The connectors 18a', 18b' are double sleeves which are coupled to the connecting spigots 9a and 9b, respectively. Finally, the transition area UB' has two steps ST1, ST2 as a sloping section over which the end sections 20' of the capillary tubes 6a-6n run.
[0109] Otherwise, the fifth embodiment is designed completely analogously to the first to fourth embodiments. Fig. 14 shows a schematic partial view of the capillary tube mat of the capillary tube heat exchanger prefabricated element according to a sixth embodiment of the present invention in a vertical cross-section, spaced parallel to a capillary tube with an attached clamping device.
[0110] The representation in Fig. 14 is in complete analogy to the representation in Fig. 4.
[0111] In contrast to Fig. 4, according to the sixth embodiment, the first and second clamping device 15a', 15b' are respective adhesive areas that clamp the first and second collector tube 7, 8 respectively.
[0112] Otherwise, the sixth embodiment is designed completely analogously to the first to fifth embodiments.
[0113] Fig. 15 shows a schematic partial representation of the insulation support plate and the capillary tube mat of the capillary tube heat exchanger prefabricated element according to a seventh embodiment of the present invention in an enlarged vertical cross-section through the capillary tube.
[0114] The representation of Fig. 15 is in complete analogy to the representation of Fig. 3a).
[0115] In contrast to Fig. 3a), according to the seventh embodiment the transition area UB“ has an inclined surface AS as a sloping area over which end sections 20“ of the capillary tubes 6a-6n run.
[0116] Otherwise, the seventh embodiment is designed completely analogously to the first to sixth embodiments.
[0117] Although the present invention has been fully described above with reference to preferred embodiments, it is not limited thereto, but can be modified in many different ways.
[0118] In particular, the geometry of the insulation support plate and the capillary tube mat is not limited to the geometries described, and it is advantageous if the insulation support plates can be joined flush laterally. Although the connection areas are provided on one or both end surfaces in the described embodiments, these connection areas can generally be provided on either surface. Furthermore, the geometry of the sloping areas is not limited to the step and angled shapes shown; other shapes or combinations are also generally applicable.
Claims
Patent claims 1. Capillary tube heat exchanger prefabricated element (100; 100a; 100b) for surface temperature control comprising: an insulating carrier plate (1) having a first main surface (TS) and an opposing second main surface (DS), a first end surface (S1) and a second opposing end surface (S2), and a first side surface (L1) and a second opposing second side surface (L2); a capillary tube mat (5) through which a temperature control medium flows, comprising a first collector tube (7) and a second collector tube (8) and a plurality of capillary tubes (6a-6n) which are connected to the collector tubes (7, 8) by welding, wherein the capillary tubes (6a-6n) have a smaller diameter than the collector tubes (7, 8) and run perpendicular to the collector tubes (7, 8);wherein the insulation support plate (1) has on the first main surface (TS) a first transverse groove (2) for receiving the first collector tube (8) and a second transverse groove (3) for receiving the second collector tube (8) as well as a plurality of longitudinal grooves (4a-4n) perpendicular to the transverse grooves (2, 3) for receiving the capillary tubes (6a-6n), wherein the transverse grooves (2, 3) have a greater depth extension into the insulation support plate (1) than the longitudinal grooves (4a-4n); wherein the first collecting tube (2) is clamped in the first transverse groove (2) by means of a first clamping device (15a; 15a') and the second collecting tube (3) is clamped in the second transverse groove (3) by means of a second clamping device (15a; 15b') such that the collecting tubes (7, 8) and the capillary tubes (6a-6n) are exposed on the first main surface (TS), wherein the capillary tubes (6a-6n) are under tensile stress; wherein a respective transition area (UB; UB';UB”) is provided between the longitudinal grooves (4a-4n) and the first transverse groove (2) and between the longitudinal grooves (4a-4n) and the second transverse groove (3), which has a respective sloping section (ST; ST1 , ST2; AS) between the longitudinal grooves (4a-4n) and the transverse grooves (2, 3) over which the clamped capillary tubes (6a-6n) run, so that the capillary tubes (6a-6n) have a respective end section (20; 20'; 20") sloping in the direction of the first and second collector tube (2, 3) corresponding to the sloping section (ST; ST1 , ST2; AS); and; wherein one or more connection areas (AB1 , AB2; AB1 ) are formed on the first collector pipe (2) and / or one or more connection areas (AB2') are formed on the second collector pipe (3) in the insulation support plate (1).
2. Capillary tube heat exchanger assembly (100; 100a; 100b) according to claim 1, wherein the descending region (ST ; ST1 , ST2) has one or more stages (ST ; ST1 , ST2).
3. Capillary tube heat exchanger prefabricated element (100; 100a; 100b) according to claim 1 or 2, wherein the sloping area (AS) has at least one inclined surface (AS).
4. Capillary tube heat exchanger assembly (100; 100a; 100b) according to claim 1, 2 or 3, wherein the capillary tubes (6a-6n) are substantially flush with the first main surface (TS) and wherein the collector tubes (7, 8) are substantially flush with or lowered relative to the first main surface (TS).
5. Capillary tube heat exchanger assembly (100; 100a; 100b) according to one of the preceding claims, wherein the first end surface (S1) extends along the first manifold (2) and the second end surface (S2) extends along the second manifold (3) and wherein the connection area(s) (AB1 , AB2; AB1) to the first manifold (2) is provided at the first end surface (S1 ) and / or the connection area(s) (AB2') to the second manifold (3) is provided at the second end surface (S2).
6. Capillary tube heat exchanger assembly (100; 100a; 100b) according to claim 5, wherein the connection area(s) (AB1 , AB2; AB1 ) to the first manifold (2) and / or the connection area(s) (AB2') to the second manifold (3) are recessed in respective through-holes (16a, 16b; 16a', 16b'; 16a, 17b) which are provided starting from the first end face (S1) and / or from the second end face (S2), wherein preferably in the through-holes (16a, 16b; 16a', 16b'; 16a, 17b) respective connectors (18a, 18b; 18a', 18b') for connection with an associated external line are accommodated.
7. Capillary tube heat exchanger prefabricated element (100) according to claim 6, wherein a first through-hole (16a; 16a') is provided on the first end face (S1) which opens into the first transverse groove (2); wherein on the first end face (S1) a second through-hole (16b; 16b') is provided which opens into the first transverse groove (2); wherein the first collector pipe (2) has on the one hand a first connecting piece (9a) which opens into the first through-hole (16a; 16a'); wherein the first collector pipe (2) has on the other hand a second connecting piece (9b) which opens into the second through-hole (16b; 16b'); and wherein a partition (10) is provided in the first collector pipe (2) between the first and second connecting pieces (9a, 9b).
8. Capillary tube heat exchanger assembly (100a) according to claim 6, wherein a first through-hole (16a) is provided on the first end face (S1) which opens into the first transverse groove (2); wherein a second through-hole (17b) is provided on the second end face (S2) which opens into the second transverse groove (3); wherein the first manifold (2) has a first connection nozzle (9a) which opens into the first through-hole (16a); and wherein the second manifold (3) has a second connection nozzle (9b') which opens into the second through-hole (17b).
9. Capillary tube heat exchanger prefabricated element (100; 100a; 100b) according to one of the preceding claims, wherein the insulation support board (1) is a wood fiberboard, in particular a wood fiberboard with a density in the range of 130 kg / m³ 3 up to 250 kg / m² 3 , preferably 150 kg / m² 3 , is.
10. Capillary tube heat exchanger prefabricated element (100; 100a; 100b) according to one of the preceding claims, wherein the insulation support plate (1) is rectangular and has a length in the range of 100 cm to 220 cm, a width in the range of 45 cm to 120 cm and a thickness in the range of 3 cm to 8 cm.
11. Capillary tube heat exchanger prefabricated element (100; 100a; 100b) according to one of the preceding claims, wherein the capillary tube mat (5) is made of polyethylene or polypropylene.
12. Capillary tube heat exchanger prefabricated element (100; 100a; 100b) according to one of the preceding claims, wherein the capillary tubes (6a-6n) have a lateral spacing in the range of 10 mm to 50 mm.
13. Capillary tube heat exchanger assembly (100; 100a; 100b) according to one of the preceding claims, wherein the capillary tubes (6a-6n) have an outside diameter in the range of 3 mm to 5 mm and / or a wall thickness in the range of 0.3 mm to 0.8 mm and / or a spacing of 10 mm to 30 mm.
14. Capillary tube heat exchanger assembly (100; 100a; 100b) according to claim 7 or 8, wherein a first connector (18a; 18a') for connection to a first external line is provided in the first through-hole (16a; 16a') and a second connector (18b; 18b') for connection to a second external line is provided in the second through-hole (16b; 17b).
15. Capillary tube heat exchanger prefabricated element (100; 100a; 100b) according to one of the preceding claims, wherein the first clamping device (15a) and / or the second clamping device (15b) comprises one or more clamping bands, in particular cable ties, which are guided around the circumference of the first or second manifold (7, 8) and through the insulation support plate (1 ).
16. Capillary tube heat exchanger prefabricated element (100; 100a; 100b) according to one of the preceding claims, wherein the first clamping device (15a') and / or the second clamping device (15b') has an adhesive area.
17. Capillary tube heat exchanger prefabricated element (100; 100a; 100b) according to one of the preceding claims, further comprising: a further capillary tube mat (5a) through which a temperature control medium flows, which has a third collecting tube (7a) and a fourth collecting tube (8a) and a plurality of further capillary tubes (60a-60n) which are metallurgically connected to the collecting tubes (7a, 8a) by welding, wherein the further capillary tubes (60a-60n) have a smaller diameter than the collecting tubes (7a, 8a) and extend perpendicular to the collecting tubes (7a, 8a); wherein the insulation support plate (1 ) has on the second main surface (DS) a third transverse groove (2a) for receiving the third collecting tube (8a) and a fourth transverse groove (3a) for receiving the fourth collecting tube (8a) as well as a plurality of further longitudinal grooves (40a-40n) extending perpendicular to the transverse grooves (2a, 3a) for receiving the further capillary tubes (60a-60n), wherein the transverse grooves (2a, 3a) have a greater depth extension into the insulation support plate (1 ) than the further longitudinal grooves (40a-40n);wherein the third collecting tube (2a) is clamped in the third transverse groove (2a) by means of a third clamping device (150a) and the fourth collecting tube (3a) is clamped in the fourth transverse groove (3a) by means of a fourth clamping device (150b) such that the collecting tubes (7a, 8a) and the capillary tubes (60a-60n) are exposed on the second main surface (DS), wherein the capillary tubes (60a-60n) are under tensile stress; wherein on the second main surface (DS) a respective transition area (UB; UB'; UB") is provided between the longitudinal grooves (40a-40n) and the third transverse groove (2a) and between the longitudinal grooves (40a-40n) and the fourth transverse groove (3a), which has a respective sloping area (ST; ST1 , ST2; AS) in the direction of the transverse grooves (2a, 3a) between the longitudinal grooves (40a-40n) and the transverse grooves (2a, 3a), over which the clamped capillary tubes (60a-60n) run, so that the capillary tubes (60a-60n) have a slope corresponding to the sloping area (ST; ST1 , ST2;AS) descending respective end section (20; 20'; 20") in the direction of the third and fourth collector pipe (2a, 3a); and wherein one or more connection areas (AB1', AB2') to the third collector pipe (2a) and / or one or more connection areas to the fourth collector pipe (3a) are formed in the insulation support plate (1).
18. Method for manufacturing a capillary tube heat exchanger prefabricated component (100; 100a; 100b) according to one of the preceding claims comprising the steps: Provision (SO) of the insulation support plate (1 ) and the capillary tube mat (5); Formation (S1 ) of the first transverse groove (2) for receiving the first collecting tube (8) and the second transverse groove (3) for receiving the second collecting tube (8) as well as the plurality of longitudinal grooves (4a-4n) perpendicular to the transverse grooves (2, 3) for receiving the capillary tubes (6a-6n) and the sloping areas ( ST; ST1 , ST2; AS) on the first main surface (TS) of the insulation carrier board (1) as well as forming the connection areas (AB1 , AB2; AB1 ); Inserting (S2) the first collector tube (2) into the first transverse groove (2); Clamping (S3) of the first collector tube (2) by means of the first clamping device (15a) in the first transverse groove (2); Stretching (S4) of the capillary tubes (6a-6n) in the longitudinal direction; Inserting (S5) the second collector tube (3) into the second transverse groove (3); Clamping (S6) the second collector tube (3) by means of the second clamping device (15a) in the second transverse groove (3); Retraction (S7) of the capillary tubes (6a-6n) in longitudinal direction; Pressing (S8) the capillary tubes (6a-6n) into the longitudinal grooves (4a-4n).
19. Method according to claim 18, wherein the expansion (S4) of the capillary tubes (6a-6n) is carried out by heating the capillary tube mat (5) by passing the temperature control medium through the capillary tube mat (5) and the re-expansion (S7) is carried out by cooling the capillary tube mat (5) by blowing the temperature control medium out of the capillary tube mat (5).
20. Method according to claim 18, wherein the stretching (S4) of the capillary tube mat (5) and the re-stretching (S7) of the capillary tubes (6a-6n) is carried out using a clamping frame (SR) in which the first and second collecting tube (7, 8) are clamped.
21. Method according to claim 20, wherein the insertion (S2) of the first collector tube (2) into the first transverse groove (2) and the insertion (S5) of the second collector tube (3) into the second transverse groove (3) is carried out using the clamping frame (SR).
22. Method according to one of claims 18 to 21, wherein the pressing (S8) of the capillary tubes (6a-6n) into the longitudinal grooves (4a-4n) is carried out by rolling.
23. Capillary tube heat exchanger prefabricated assembly with: a plurality of capillary tube heat exchanger prefabricated elements (100; 100a; 100b) according to one of claims 1 to 13, which are positively fitted onto a ceiling surface or a wall surface or a floor surface of a building or a device to be tempered.
24. Capillary tube heat exchanger assembly according to claim 23, wherein the capillary tube heat exchanger assembly elements (100; 100a; 100b) are mounted flush laterally.
25. Capillary tube heat exchanger assembly according to claim 23 or 24, wherein at least some of the capillary tube heat exchanger assemblies (100; 100a; 100b) are mounted on the Main surfaces (TS, DS) are stacked and mounted.
Citation Information
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