EP2322862A2 - Thermal connection nozzle and concrete core tempering device comprising same - Google Patents

Abstract

The box (1) has a housing (2), and supply and discharge pipes (3, 7) provided for heat transfer medium. Deflection devices (4, 8) are connected with the pipes, respectively. Spherical valves (5, 9) are connected with the deflection devices. The deflection devices are fastened to a base of the housing, where connections between the supply and discharge pipes and the deflection devices takes place by axial press connection with sliding sleeves (6, 10), respectively. The sleeves sealingly close openings required for guiding the supply and discharge pipes through a housing wall.

Description

The present invention is in the field of Betonkerntemperierung and relates to a thermal junction box for room-side connection of additional, quickly controllable Flächenheiz- and / or area cooling elements in case of need. Moreover, the present invention relates to a Betonkerntemperierung comprising such a thermal junction box.

Such a thermal junction box allows the optional provision of additional thermal energy or additional cooling potential if necessary by the ability to connect additional heating and / or cooling elements to an existing Betonkerntemperierung, with a subsequent commissioning of these additional elements without emptying the system is possible. Accordingly, the integration of such thermal junction boxes in Betonkerntemperierungen additional flexibility in terms of a subsequent change in the use of space and thus provides planning security. Such thermal junction boxes allow the direct connection of external heating / cooling peak load elements suspended from the concrete ceiling to existing surface heating / cooling systems of a concrete core temperature control.

At present, such thermal junction boxes are marketed by Uponor GmbH under the name "Contec TS." These junction boxes are made of a polymer hollow body in which a solid brass body is fitted.The junction boxes are nailed to the lower formwork level of the concrete pavement for installation The solid brass body of the junction box acts both as a connection component and as a diverting component of the volume flow of the heat transfer medium to the additional room-side mounted heating-cooling ceiling element to an already existing The connection of the additional heating / cooling elements takes place on the room side by means of connectors or quick couplings using O-rings, while the ceiling-side connection of the heating / cooling line ystems, for what Currently tubes with the tube dimensions 14 mm, 17 mm and 20 mm are used, carried out by means of radial compression joints. Thus, such junction boxes must be made per dimension of the pipe connection in a special size design. In addition, the massive brass body, which serves to divert the volume flow in the junction box and receives the connection components for the wall-side pipe system on the one hand and the additional heating / cooling element on the other hand, due to its high weight difficult handling and installation of the thermal junction box on site , In addition, the massive brass body leads to high material and manufacturing costs.

The installation of the junction box is done in the shell during the construction of the concrete ceilings. It can be assumed that the O-rings, which are used in the connections of the ceiling-side piping system, can be easily damaged. In such a damage to the O-rings, this can lead to leakage of the pipe system in the massive concrete ceiling, which can ultimately be resolved only by chiselling the already finished concrete ceiling. The room-side connection of the additional heating / cooling elements via plug-in couplings, wherein the solid brass body, a spring-loaded rubber body is integrated, which has the task to close the hydraulic cross section of the pipe system. However, this quick-release technique is susceptible to soiling. In rough construction site operation, there is a risk that contamination of the interior of the solid brass body may occur during the installation of the junction box. In this case, contamination of the plug-in coupling can lead to leaks in the overall system. In addition, by the use of the plug-in coupling, the hydraulic cross-section is severely limited by the spring-loaded rubber body required for the sealing, resulting in low volume flows through the thermal junction box and high pressure losses through the thermal junction box.

Furthermore, the room-side connection of the additional heating / cooling element via the plug-in coupling. However, such a plug-in coupling is usually only attached to so-called Stahlflex- or tank hoses, which in turn are associated with high costs.

Against this background, the present invention has the object, a thermal junction box and a corresponding Betonkerntemperierung available which overcomes the disadvantages of the prior art. In particular, the thermal junction box according to the invention should only be associated with low product and manufacturing costs, have an easy handling and installation and ensure a high density, especially at the connection points to the ceiling-side piping system and the room-side connection. In addition, the thermal junction box according to the invention should allow a high volume flow through the junction box and avoid high pressure losses. The junction box should also have the option of being connectable to different pipe diameters on the ceiling side.

These and other objects are achieved by a thermal junction box according to claim 1 or a Betonkerntemperierung according to claim 13. Preferred embodiments of the thermal junction box according to the invention are described in the dependent claims.

According to the present invention, it has surprisingly been found that such a thermal junction box can be constructed of conventional, inexpensive and easy-to-process individual components in a simple manner, which also have a relatively low weight, the connections of the individual components used ensure a high degree of tightness.

Accordingly, the present invention is to provide a junction box for connecting an additional heating / cooling element to an existing Betonkerntemperierung, said junction box a unilaterally open housing, a feed pipe for the heat transfer medium, a discharge pipe for the heat transfer medium, a deflection pipe connected to the feed tube, a deflecting device connected to the discharge pipe and two ball valves connected to one of the deflecting devices, wherein the deflecting devices are fastened to the bottom of the housing, the connections between supply pipe and associated deflecting device and between exhaust pipe and associated deflecting device are each formed via an axial press connection with sliding sleeve and the sliding sleeves sealingly closes the openings required for the feed pipe and exhaust pipe through the housing walls. Moreover, the present invention is to provide a Betonkerntemperierung comprising at least one junction box according to the invention.

The junction box according to the invention uses the established sliding sleeve connection technology with the corresponding molded parts for connecting supply and exhaust pipe with the respective deflection devices. As a result, a high density of the connection while ensuring ease of handling and installation and low weight is guaranteed. The use of diverters and ball valves largely prevents a restriction of the hydraulic cross section for the heat transfer medium, whereby pressure losses and associated energy / pumping costs for the system can be kept low. As a result, only a relatively small number of the junction boxes according to the invention have to be used for a given area, whereby the costs for the entire system can be reduced. The low pressure losses are particularly significant in cooling, in which high volume flows have to be used. By using the sliding sleeve connection technology with the corresponding molded parts, the use of O-rings in the junction boxes according to the invention is avoided. This pollution effects are largely excluded, especially in the case of the ceiling-side pipes. The use of ball valve technology also allows the use of a cost-effective connection technology for room-side connection of the additional surface heating / cooling elements.

Preferably, the deflection devices are designed such that they cause a deflection of the flow of the heat transfer medium by 90 °. This ensures that the horizontally entering the junction box current of the heat transfer medium is redirected in the vertical direction and thus a room-side connection can be made.

It may be advantageous if the attachment of the deflection devices at the bottom of the housing via a mounting plate, which is positively connected to the bottom of the housing. Thus, the deflection can be connected outside the housing with the mounting plate (for example, via rivets) and these are used in a simple manner by means of the mounting plate in the housing, the positive connection between mounting plate and housing ensures secure attachment of the deflection in the junction box according to the invention.

It may also be useful if the connection between the deflecting devices and the respective ball valves takes place via a screw connection. Such a screw connection provides a cost-effective, secure and tight connection between deflecting devices and the respective ball valves. It has proven to be particularly favorable in practice, when the screw is constructed by internal threads on the deflection and complementary external thread on the ball valves.

It can prove to be advantageous if the junction box further comprises at least one further supply pipe and at least one further exhaust pipe, the further supply and exhaust pipes are each connected via an axial compression connection with sliding sleeve each with a further, attached to the bottom of the housing deflection device, wherein the sliding sleeves each sealingly close the openings required for the implementation of further supply and discharge pipes through the housing walls, and the deflection devices are each connected to a further ball valve. This provides further connection possibilities for additional heating / cooling elements using a single junction box according to the invention. The attachment of the further deflection devices at the bottom of the housing on the mounting plate and the connection between the other deflection devices and the respective other ball valves via a screw connection is preferably carried out as explained with respect to the supply and discharge tubes.

It can prove to be advantageous if the (ceiling-side) connection of the feed pipe and / or the further feed pipes and the exhaust pipe and / or the other exhaust pipes to the pipe system of Betonkerntemperierung respectively via a fitting with sliding sleeve connection. This ensures a secure and tight connection of the pipes with the pipe system of Betonkerntemperierung. In this context, it has proved to be particularly advantageous when the fitting is a transition from the pipe diameters of Betonkerntemperierung on the pipe diameter of the supply and discharge pipes and possibly the other supply and discharge pipes (for example, using reducers). In this way, it is ensured that the junction box according to the invention can be used as a single component for different pipe dimensions of the pipe system of Betonkerntemperierung.

In addition, it may be advantageous if the junction box further includes a connection to an electrical wiring. In this way, in addition the possibility of an electrical connection in the junction box according to the invention can be made possible.

It may also be useful if the feed pipe and possibly the other feed pipes and the exhaust pipe and optionally the other exhaust pipes have a corresponding coding. As a result, incorrect connection of an additional heating / cooling element to a concrete core temperature control can be effectively prevented. In particular, a color coding has proven to be particularly suitable.

Finally, the present invention is also in the provision of a Betonkerntemperierung comprising at least one thermal junction box according to the invention.

In the following, the present invention will be explained in detail with reference to the embodiment shown in the figures.

Brief description of the drawings

FIG. 1

shows a plan view of the open side of the housing of an embodiment of the junction box according to the invention.

FIG. 2

shows a sectional view of in Fig. 1 illustrated embodiment of the present invention along the line XX viewed in the direction of the arrow.

FIG. 3

shows a sectional view of in Fig. 1 illustrated embodiment of the present invention along the line YY viewed in the direction of the arrow.

Detailed description of preferred embodiments

In Fig. 1 an embodiment of the junction box 1 according to the invention in a plan view of the open side of the housing 2 is shown. The housing 2 is a plastic box, preferably a commercially available cavity box made of plastic. On the bottom of the housing 2 is a support plate 11 whose length corresponds to the distance between two opposite walls of the housing 2 and which is positively connected to the ground. In addition, the mounting plate 11 is clamped between two opposite walls of the housing 2. Two 90 ° deflection pieces functioning as deflection devices 4, 8 for the flow of the heat transfer medium are fixed with two screws in the opposite direction on the mounting plate 11.

The two 90 ° deflection pieces 4, 8 each have a fitting extension, an adjoining deflection region and an adjoining internal thread Rp ½ ".

At the fitting extension of the deflection device 4, a feed tube 3 is connected by an axial press connection with sliding sleeve 6. Commercially available PEX pipes with an oxygen barrier layer are preferably used as feed pipe 3. In the region of the sliding sleeve 6, the feed tube 3 penetrates a wall of the housing 2, wherein the sliding sleeve 6 sealingly closes the required recess in the wall of the housing 2.

The ball valve 5 is composed of an external thread R½ ", a ball valve connected thereto and an internal thread Rp ½" attached thereto. The internal thread of the deflection device 4 is screwed into the complementary external thread of the ball valve 5, whereby a secure and tight connection is formed. The pointing to the outside of the housing internal thread of the ball valve 5 is used for subsequent connection of the inlet of an additional heating / cooling element to an existing already in a building Betonkerntemperierung.

In a completely analogous manner, an exhaust pipe 7 for the heat transfer medium is connected to the fitting extension of the deflection device 8 by an axial press connection with sliding sleeve 10. As well as for the supply pipe 3, commercially available PEX pipes with an oxygen barrier layer are preferably used for the discharge pipe 7. In the region of the sliding sleeve 10, the discharge pipe 7 penetrates a wall of the housing 2, wherein the sliding sleeve 10 sealingly closes the required recess in the wall of the housing 2.

The ball valve 9 is also constructed of an external thread R ½ ", a subsequent thereto ball valve and an attached internal thread Rp ½". The internal thread of the deflection device 8 is screwed into the complementary external thread of the ball valve 9, whereby a secure and tight connection is formed. The pointing to the outside of the housing 2 internal thread of the ball valve 10 is used for subsequent connection of the return of an additional heating / cooling element to an already in a building existing Betonkerntemperierung by screwing with a matching external thread.

For the production of the junction box 1 according to the invention are first Zuführungsund exhaust pipe 3, 7 after the coating of the respective sliding sleeve 6, 10 via the tube 3, 7 with a corresponding tool at each one end widened. Then, in each case, the widened end of the feed tube 3 and the discharge tube 7 is plugged onto the fitting extension of the respective diverting device 4, 8. The sliding sleeves 6, 10 are then pushed over the patch on the fitting extensions, flared ends of the feed tube 3 and the exhaust pipe 7. The two deflection devices 4, 8 are then fastened with screws on the mounting plate 11 and supply pipe 3 and discharge pipe 7 are guided through openings in opposite sides of the housing 2 such that the sliding sleeves 6, 10 sealingly close the openings in the housing walls. Then, the mounting plate 11 is pressed onto the bottom of the housing 2 and fastened to it with positive locking.

In other embodiments, the junction box 1 comprises at least one further feed pipe and at least one further exhaust pipe. This can be connected to an existing Betonkerntemperierung only a junction box 1 more additional heating / cooling elements. The other supply and discharge pipes are fastened in the same way as the supply and discharge pipe 3, 7 at the bottom of the housing 2 and are each connected via an axial compression connection with sliding sleeve, each with a further deflection device, wherein the sliding sleeves each to carry out the other Supply and exhaust pipes sealed by the housing walls openings seal. The further deflection devices are each connected to a further ball valve. The connection technique between the further supply and discharge pipes and the further deflection devices and between the further deflection devices and the other ball valves and also the connection of additional heating / cooling elements takes place as above with respect to the connection technology between the supply and discharge pipe 3, 7 and the deflection devices 4, 8 and between the deflection devices 4, 8 and the ball valves 5, 9 explained. Additionally or alternatively, the junction box 1 according to the invention may also further comprise a connection possibility to an electrical wiring.

The ceiling-side connection of the feed pipe 3 and possibly the other feed pipes and the discharge pipe 7 and possibly the other discharge pipes to the pipe system of Betonkerntemperierung takes place via a connecting piece. The connector has in this case two fitting approaches, wherein the pipe system of Betonkerntemperierung is connected to one of these fitting approaches via an axial press connection with matching sliding sleeve. In an identical way, the feed pipe 3 of the junction box 1 according to the invention is connected to the connecting piece via the other fitting extension. In order to adapt the junction box 1 to the pipe diameter used in the concrete core tempering, the connecting piece can be designed as a reducing piece or widening piece. This allows a transition from the pipe diameters of Betonkerntemperierung on the pipe diameter of the supply and discharge pipes 3, 7 and possibly the other supply and discharge pipes.

To increase the installation depth, the junction box 1 according to the invention can be provided with conventional Aufsetzrahmen.

Fig. 2 shows a sectional view through the in Fig. 1 illustrated junction box 1 along the line XX. It can be seen that the deflection devices 4, 8 are fixed in opposite directions with approximately the same distance to two mutually opposite walls of the housing 2. The connection of each deflecting device 4, 8 to the mounting plate 11 is carried out with two attachment means, which may be formed as grooves, bolts, screws and the like.

Fig. 3 shows a sectional view through the in Fig. 1 illustrated junction box 1 along the line YY. It can be clearly seen how the sliding sleeve 10 sealingly closes the opening required for the passage of the discharge tube 7 through the housing walls.

For mounting, the housing 2 of the junction box 1 according to the invention is placed with the open side on the lower formwork and fastened by nails. Thereafter, supply and discharge pipe 3, 7 of the junction box 1 are connected to the pipe system of Betonkerntemperierung. This can for example be done using a T-connector. Thereafter, the entire system is checked with closed ball valves 5, 9 by a pressure test for leaks. After successful pressure test, the concrete pavement is poured and after drying of the concrete the shuttering away. Thereafter, the nails are removed and the now facing the room open side of the housing 2 of the junction box 1 is closed with a corresponding cap. For optical reasons, the cap can be painted in color from the outside.

To integrate an additional heating / cooling element to this Betonkerntemperierung the additional heating / cooling element is attached in the vicinity of the junction box 1 according to the invention depending on the ceiling. Then the closure cap of the junction box 1 according to the invention is removed and the inlet tube of the additional heating / cooling element is connected via a screw connection between a matching external thread and the internal thread of the ball valve 5 to the junction box 1, while the connection of the return of the additional heating / cooling element the junction box 1 via a corresponding screw connection between an external thread connected to the return pipe and the internal thread of the ball valve 9 takes place. The hydraulic integration of the additional heating / cooling element can be done via a two-, three- or four-wire system. In the two-wire system connected to the junction box 1 according to the invention additional heating / cooling element is connected to the same flow and return as cast in the ceiling modules of Betonkerntemperierung, while in the three-wire system connected to the junction box 1 according to the invention additional heating / cooling element connected to the same return is like the modules poured into the ceiling, while an additional feed is used. Finally, in the four-wire system, the circles for the concrete core tempering modules cast in the ceiling and the additional heating / cooling element are completely separated. Finally, the taps of the ball valves 5, 9 are opened.

The present invention provides a lightweight, low cost and easy to handle thermal junction box with low pressure loss from components. In this case, the junction box according to the invention can be securely and tightly connected to a Betonkerntemperierung.

Claims (13)

Junction box (1) for connecting an additional heating / cooling element to an existing concrete core temperature control, the junction box (1) comprising: a housing (2) which is open on one side, a feed pipe (3) for the heat transfer medium, an exhaust pipe (7) for the heat transfer medium, a deflection device (4) connected to the feed tube (3), a deflection device (8) connected to the discharge pipe (7), - One with the deflection device (4) connected ball valve (5), and a ball valve (9) connected to the deflection device (8),
wherein the deflecting devices (4, 8) are fastened to the bottom of the housing (2), the connections between supply pipe (3) and deflecting device (4) and between feed pipe (7) and deflecting device (9) via an axial press connection with sliding sleeve (6 , 10) takes place and the sliding sleeves (6, 10) sealingly closes the openings required for the passage of feed pipe (3) and discharge pipe (7) through the housing walls. Connection box (1) according to claim 1, characterized in that the attachment of the deflection devices (4, 8) at the bottom of the housing (2) via a support plate (11), which is positively connected to the bottom of the housing (2). Connection box (1) according to claim 1 or 2, characterized in that the connection between the deflecting devices (4, 8) and the respective ball valves (5, 9) via a screw connection (12, 13). Junction box (1) according to claim 3, characterized in that the screw connection is constructed by internal threads on the deflection devices (4, 8) and complementary external thread on the ball valves (5, 9). Junction box (1) according to one of claims 1 to 4, characterized in that the junction box (1) further at least one further supply pipe and at least one further discharge pipe comprises, wherein the further supply and discharge pipes are each connected via an axial compression connection with sliding sleeve each with a further, at the bottom of the housing (2) fixed deflecting device, wherein the sliding sleeves each for carrying out further supply and discharge pipes through the Close the housing walls required openings sealing, and the deflection devices are each connected to a further ball valve. Connection box (1) according to claim 5, characterized in that the attachment of the further deflection devices at the bottom of the housing (2) via the support plate (11). Connection box (1) according to claim 5 or 6, characterized in that the connection between the further deflection devices and the respective further ball valves via a screw connection. Connection box (1) according to claim 7, characterized in that the screw connection is made by internal threads on the further deflection devices and complementary external thread on the other ball valves. Junction box (1) according to one of claims 1 to 8, characterized in that the connection of the feed pipe (3) and / or the further feed pipes and the discharge pipe (7) and / or the other discharge pipes to the pipe system of Betonkerntemperierung each as an axial press connection Fitting and sliding sleeve is configured. Junction box (1) according to claim 9, characterized in that the fitting is designed as a reducer, so that a transition from the pipe diameters of Betonkerntemperierung on the pipe diameter of the supply and discharge pipes (3, 7) and possibly the other supply and discharge pipes he follows. Connection box (1) according to one of claims 1 to 10, characterized in that the junction box (1) further comprises a connection possibility to an electrical wiring. Connection box (1) according to one of claims 1 to 11, characterized in that the supply pipe (3) and / or the further supply pipes and the discharge pipe (7) and / or the further discharge pipes are coded, in particular color-coded. Betonkerntemperierung comprising at least one thermal junction box 1 according to one of claims 1 to 12.

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