DE102021127143A1 - System for cooling or heating - Google Patents

Abstract

The invention relates to a system (1) for a heating and/or cooling ceiling for heating and/or cooling rooms, having at least one ceiling covering, a section (2) of a first circuit (3a, 3b), the first circuit (3a , 3b) and whose section (2) is traversed by a first medium and the first medium assumes a specified temperature of the first circuit (3a, 3b) and at least one container (4) with a first (5) and a second connection (6 ), wherein the container (4) is attached in or on the ceiling covering, the system having a second circuit (7), the container being part of the second circuit (7) and the second circuit (7) being traversed by a second medium is provided, the first connection (5) of the container (4) for supplying the second medium and the second connection (6) of the container (4) for removing the second medium and a decoupling device (8) is set up to separate the section of the physically separate the first circuit (2) and the second circuit (7) from one another and establish heat transfer from one medium to the other.

Description

The present invention relates to a system for a heating and/or cooling ceiling for heating and/or cooling rooms, comprising at least one ceiling covering, a section of a first circuit, with a first medium flowing through the first circuit and its section and the first Medium assumes an intended temperature of the first circuit and at least one container with a first and a second connection, the container being mounted in or on the ceiling lining, and a method for operating the system.

Systems for a heating and/or cooling ceiling for heating and/or cooling rooms are known in the prior art. The previously used climate control ceilings for heating and cooling are connected directly to the first circuit, which is usually the main heating or cooling circuit of a building, with or without a method for operating the system. A heating or cooling medium, for example water, runs through a system of pressure-resistant pipes made of copper, stainless steel or plastic that is mounted on or in the ceiling, laid in parallel or mostly in a meandering pattern, at a relatively high pressure of approx. 1.5 - 8 bar. The above-mentioned pipes are usually placed and fastened either directly on metal tray systems or mineral ceiling systems or inserted in intermediate layers. You can also be embedded in panels, such as plasterboard. To increase the thermally activated surfaces, the tubes can also be embedded in heat-conducting materials. The pipes are flown through by the heating or cooling medium and, if the temperature is higher than the room temperature, they give off heat for heating to the room below or, if the temperature is lower than the room temperature, they absorb heat for cooling.

It is less common, but just as well known, for example from the document DE 40 05 915 A1 or the document WO 2014/029036 A1 , instead of the meandering laid system of pressure-resistant, diffusion-tight pipes, to insert the containers mentioned at the outset in troughs of the metal trough system. In both documents, the containers are connected to the first circuit and a medium, in this case water, flows through them. The heating or cooling medium is pumped through the circuit at a pressure of 1.5-5 bar and a temperature of 18°C - 70°C.

A disadvantage of the systems from the prior art is that the heating or cooling system must be designed in such a way that it withstands both the high pressures and the high temperatures of the main heating or cooling circuit. These systems are also generally designed to be diffusion-proof in order to protect the building's main heating and/or cooling circuit from damage such as corrosion. Such a system is expensive and complicated to construct.

This is where the invention comes in.

It is the object of the present invention to propose a system for a heating and/or cooling ceiling for heating and/or cooling rooms that is simple and inexpensive to set up, but still allows comfortable control of the room temperature by means of heating and/or cooling .

This object is achieved by a system according to claim 1 and a method according to claim 17. Embodiments of the invention are given in the dependent claims.

The system for a heating and/or cooling ceiling for heating and/or cooling rooms has at least one ceiling covering, a section of a first circuit, with the first circuit and its section being traversed by a first medium and the first medium having a specified temperature of the first circuit and at least one reservoir having a first and a second connection, the reservoir being mounted in or on the headliner, the system comprising a second circuit, the reservoir being part of the second circuit and the second circuit being part of a second medium flows through it, the first connection of the container is provided for supplying the second medium and the second connection of the container is provided for removing the second medium, and a decoupling device is set up to physically separate the section of the first circuit and the second circuit from one another and a produce heat transfer from one medium to another.

The system according to the invention is divided into a first circuit and a second circuit. The first circuit is part of the main heating and/or cooling circuit of the building. A first medium flows through the first circuit. This can usually be water. However, it is also conceivable that other media could be used. The first medium is brought to a first temperature by a heat source or a heat sink in the first circuit. The temperature is selected as required for heating and/or cooling a building. A hot water supply can usually also be provided via this first circuit. The temperature range of this main heating and/or cooling circuit running can normally be between 18°C and 70°C. The heating or cooling medium is conveyed through the circuit at a pressure of 1.5-8 bar.

A second medium flows through the second cycle. In the second circuit, containers are arranged, to which the second medium is supplied via the first connection and the second medium is discharged again via the second connection. It is also possible to use water as a second medium. Other media are also conceivable which, for example, have better properties when it comes to storing thermal energy. Both circuits are physically decoupled from each other via a decoupling device. The first medium and the second medium are thus not mixed. The decoupling device is set up to establish heat transfer between the first medium and the second medium. For this purpose it can be provided that the decoupling device has a heat exchanger. The second medium can be heated or cooled by the heat exchanger to a temperature needed to reach a desired temperature in a space. For this purpose, the second medium is passed through the at least one container.

In order to heat and/or cool a large room, a floor and/or an entire building with such a system, it can be advantageous if the system has a plurality of containers. It can be provided here that several containers are combined into groups and the containers of a group are connected to one another in series and/or in parallel. It is conceivable that a room with a size of approx. 40-50 square meters can be heated and cooled with a group of containers.

If it is necessary for a larger area to be heated and cooled, provision can be made for several groups to be connected to one another in series and/or in parallel, with a distribution means dividing the second medium between the groups which are respectively connected to one another. The distribution means splits the second circuit into a number of sub-circuits, each of which forms small circuits and is brought together at the distribution means. It is thus possible for different amounts of the second medium to be routed to the containers for groups of different sizes. It is easy to imagine that a floor or an entire building with an area of approx. 400-500 square meters can be heated and cooled with several groups.

It can be provided that the system comprises at least one temperature control means, preferably a room thermostat, each group being advantageously connected to a temperature control means. It is possible to set a desired temperature for each group via the temperature control means. The temperature control means control the inflow of the second medium into the containers of the associated group in such a way that the desired temperature is reached.

There is the possibility that the second circuit is designed as a low-pressure circuit, the pressure within the second circuit being, for example, 0.5 bar to 1 bar, preferably 0.8 bar. The design as a low-pressure circuit means that the system can be set up quickly and cost-effectively, as less assembly work is required. Simple connections, for example plug-in connections and/or press connections, can be used for low pressures. To set the correct pressure, it can be provided that the decoupling device has at least one device for setting the pressure, for example a pump, within the second circuit.

Furthermore, it can be provided that the second circuit is designed as a low-temperature circuit, the temperature within the second circuit being below 35°C, preferably below 25°C. A design as a low-temperature circuit offers the advantage that materials that lose their dimensional stability at high temperatures can be used within the circuit. These are in particular thermoplastics. In order to be able to set the temperature of the second medium, it can be provided that the decoupling device has at least one mixing valve for temperature setting within the second circuit. Provision can also be made for the decoupling device to have a feed in order to be able to fill up the second medium.

There is the possibility that the at least one container rests in a metal trough and/or on a mineral cover plate and is in a thermally conductive connection with the metal trough and/or the mineral cover plate. The second medium flows through the at least one container and transfers the temperature of the second medium to the metal trough and/or the mineral ceiling panel. As a result, when the temperature of the second medium is higher than room temperature, heat is given off to the space below for heating, or when the temperature of the second medium is lower than room temperature, heat is absorbed from the space and the space is thus cooled. This is mainly due to radiative heat transfer and convection.

There is a possibility that the container is thin-walled. Due to the thin-walled structure of the container, a particularly efficient heat transfer is possible.

Provision can advantageously be made for the at least one container to be manufactured from a plastic film, preferably an at least two-layer plastic film. The plastic film can be a homogeneous or composite film. Metal foils or coated metal foils are also suitable. To manufacture the container, all sides of the container are sealed watertight. For this purpose, they can be provided with a welded or glued seam. If a tubular film is used as the film, sealing on the long sides can be omitted. If the film is folded over on one long side, sealing on this long side can be omitted. This offers the possibility of making the manufacturing process of the container simpler and saving costs. Possible faults are also avoided by sealing wherever sealing can be dispensed with through skilful use of the film.

It can be provided that the at least one container has, for example, a rectangular base and a height that is small in relation to the lengths of the base, the container or a combination of containers having approximately the inner dimensions of a metal pan or the extent of a ceiling plate and rests over a large area with the base surface facing the metal tray or the ceiling panel. The heat transfer takes place from the second medium via the thin wall of the container to the top of the metal pan underneath. Due to the weight of the second medium, direct, large-area contact of the facing base of the container with the metal tray or the mineral ceiling panel is ensured. As a result, an additional use of thermally conductive materials can be dispensed with. It is possible to attach a heat-insulating layer made of a suitable material to the base surface facing away from the metal pan or the cover plate, in order to prevent unwanted dissipation or absorption of heat energy on this side of the container. The large-area support of the base area facing the metal pan or the ceiling panel enables very rapid temperature changes with high accuracy.

Provision can be made for the first connection and the second connection of the container to be arranged on opposite sides of the base area. The position of the first and second connection is arbitrary on the circumference, but on opposite sides. The arrangement of the first and second connection creates a directed flow that leads to an even distribution of heat or cold within the container. Furthermore, it can be provided that the first connection and the second connection of the container are arranged on the same side of the base area, one of the two connections being guided inside the container by means of an extension to just before the opposite side. The flow of the second medium is directed by this measure in a similar way as with connections on opposite sides. The directional effect can be increased if the container has punctiform and/or linear connections between the two films on the top and bottom. Suitable inserts between the two films can also be used.

Provision can be made for the decoupling device, the distribution means and each temperature control means to be connected to one another with thin-walled, flexible but kink-resistant hoses. Provision can also be made for the temperature control means and each container in a group to be connected to one another, in particular using hoses of the same type. Due to the pressure and temperature range, which is present in the second circuit, it is possible to also design all components of the second circuit in thin-walled plastic materials. It is also not necessary for the second circuit to be impermeable to diffusion, since the second circuit is physically decoupled from the first circuit by the decoupling means.

• - der Abschnitt eines ersten Kreislaufes wird von einem ersten Medium durchflossen,
• - das erste Medium nimmt eine Temperatur des ersten Kreislaufes an,
• - das erste Medium durchströmt die Entkopplungsvorrichtung,
• - innerhalb der Entkopplungsvorrichtung wird über eine Vorrichtung zum Übertragen der Wärme vom ersten Kreislauf zum zweiten Kreislauf oder umgekehrt, wie beispielsweise ein Wärmetauscher, das zweite Medium auf eine Temperatur erhitzt oder gekühlt,
• - das zweite Medium durchströmt den zweiten Kreislauf mit dem mindestens einen angeschlossenen Behälter,
• - der mindestens eine Behälter liegt in einer Metallwanne und/oder auf einer mineralischen Deckenplatte auf und steht mit der Metallwanne und/oder der mineralischen Deckenplatte in wärmeleitender Verbindung,
• - durch den Temperaturunterschied zwischen dem mindestens einen Behälter und dem umgebenden Raum wird dem Raum Wärme zugeführt oder Wärme abgeführt.

The method for operating a system according to the invention has at least the following steps:

• - the section of a first circuit is traversed by a first medium,
• - the first medium assumes a temperature of the first circuit,
• - the first medium flows through the decoupling device,
• - within the decoupling device, the second medium is heated or cooled to a temperature via a device for transferring the heat from the first circuit to the second circuit or vice versa, such as a heat exchanger,
• - the second medium flows through the second circuit with the at least one connected container,
• - The at least one container is located in a metal tub and/or on a mineral ceiling panel and stands with the metal tub and/or the mineral ceiling panel in a thermally conductive connection,
• - Due to the temperature difference between the at least one container and the surrounding space, heat is supplied to the space or heat is dissipated.

Provision can be made for the inflow into the at least one container to be controlled via the temperature control means.

Provision can furthermore be made for the pressure in the second circuit to be adjusted via a device such as a pump. Provision can also be made for the temperature in the second circuit to be set via a device such as a mixing valve.

• 1 eine schematische Darstellung eines erfindungsgemäßen Systems
• 2 eine schematische Darstellung einer Gruppe von Behältern mit Temperaturregelungsmittel
• 3 eine schematische Draufsicht auf einen Behälter

Further features and advantages of exemplary embodiments of the invention are described below with reference to the drawings. The same reference numbers are used for the same or similar parts and for parts with the same or similar functions. Show it:

• 1 a schematic representation of a system according to the invention
• 2 a schematic representation of a group of containers with temperature control means
• 3 a schematic plan view of a container

It is not necessary for a device according to the invention to have all the features described below. It is also possible for a device according to the invention to have only individual features of the exemplary embodiment described below.

This in 1 The system 1 according to the invention shown comprises a section 2 of a first circuit 3a, 3b and a second circuit 7, with a first medium flowing through section 2 and a second medium flowing through the second circuit 7, and with section 2 being part of a first circuit, which is a main heating and/or cooling circuit 3a, 3b, a decoupling device 8, a distribution means 11a, 11b and several groups 10 of containers 4, each group 10 being associated with a temperature control means T. In each case, a plurality of groups 10 in series with one another are part of the second circuit 7. This plurality of groups 10 in turn are part of the second circuit 7 in parallel with one another. A group 10 of containers 4 can be used, for example, to air-condition a room in a building. All groups 10 together can be used, for example, to air-condition a floor or an entire building.

Each container 4 rests in a metal tub, not shown, or on a mineral ceiling panel, not shown, which form the substructure for a suspended ceiling, for example.

The decoupling device 8 in turn has a device 9 for transferring the heat from the first circuit 2 to the second circuit 7 and vice versa, a device 12 for adjusting the pressure in the circuit 7 and a device 13 for adjusting the temperature in the circuit 7, the latter by a Mixing valve can be formed.

The first medium is heated or cooled to the temperature of the first circuit 3a, 3b by a heat source or sink in the first circuit 3a, 3b, the main heating and/or cooling circuit, and conveyed via section 2 to the decoupling means. Heat transfer from the first medium to the second medium is made possible via the decoupling means 8, which has the device 9 indicated schematically for transferring the heat. The first and the second medium can be water, for example. Water is particularly easily available and is available in all buildings. However, other media are also conceivable, for example media that have a higher heat capacity. The second medium is heated or cooled to a required temperature with the device 9 for transferring the heat, depending on whether heating or cooling of the room or the building is desired. If the required temperature cannot be set solely by the device 9 for transferring the heat, the decoupling device 8 has a device 13 for setting the temperature, via which the second medium can be mixed. To fill the second circuit, the distribution means 11a, 11b can have a supply, for example a fresh water supply, which 1 is not shown in detail.

The second medium is then distributed to the respective connected groups 10 via the distribution means 11a, 11b. For this purpose, the second medium in the second circuit 7, starting from the decoupling device 8, first runs through the distribution means 11a. this is in 1 represented by the dashed lines. After the distribution in the distribution means 11a, the second medium flows in the second circuit 7 via the temperature control means T into the groups 10 of containers 4. The temperature control means T is set up to regulate the flow through the connected group 10 of containers 4 so that the associated room is heated or cooled according to settings. A room thermostat can be used as the temperature control means T, for example. After the second medium has passed through a group 10 of containers 4, the medium has either given up its thermal energy to the associated space or absorbed the thermal energy of the associated space and flows back to the distribution means 11b, where the second circuit 7 is brought together again. To better illustrate that the second medium has released or absorbed heat, the return flow of the second circuit 7 is shown as a solid line. After the distribution means 11b has brought the second circuit 7 back together, the second circuit 7 again flows through the decoupling device 8 in order to exchange thermal energy with the section of the first circuit 2 via the device 9 for transferring the heat.

2 shows a group 10 of containers 4 with a connected temperature control means T. In the present exemplary embodiment, the individual containers 4 are connected to one another in series. The temperature control means T controls the inflow of the second medium into the group. All containers 4 of group 10 have the second medium flowing through them uniformly and assume a uniform temperature. This enables an even distribution of heat or cold within the group 10 of containers 4, which in turn is transferred to the metal pan or the mineral ceiling panel and can thus, for example, air-condition a room evenly. The dashed lines represent the inflow of the second medium to the individual containers. The return flow of the second medium through the temperature control means T is shown with a solid line.

In 3 a container 4 is shown as an example. In this example, the container 4 has a rectangular base area, the container 4 having approximately the inner dimensions of a metal pan or the extent of a ceiling panel, which can serve as the substructure of a suspended ceiling, and the container 4 facing the metal pan or the ceiling panel Base area rests extensively. The height, which is small in relation to the lengths of the base, becomes in 3 not shown. The container 4 has a first connection 5 and a second connection 6 on the opposite transverse sides of the container 4 . The first connection 5 serves as an inflow for the second medium into the container 4 and the second connection 6 serves as an outflow from the container 4. The arrangement of the first and second connection 5, 6 generates a directed flow which leads to a uniform heat - Or cold distribution within the container 4 leads. Both the contour of the base area and the position and design of the connections and the direction-reinforcing connections in the area can be changed from the representation of the container 4 in 3 differ.

The container 4 can preferably be made of a plastic film, which can be a homogeneous or composite film. Alternatively, a metal foil with or without a plastic coating can also be used. In order to manufacture the container 4, all sides of the container 4 are provided with a sealing permanent joint 16. If a tubular film is used as the film, the connections 16 on the longitudinal sides can be omitted.

In order to reinforce and direct the directed flow of the second medium within the container 4, the container 4 in 3 punctiform and linear connections 17 in the area. The second medium in the container 4 is conducted through the connections 17 . Defined friction points are created in order to influence the flow of the second medium in order to achieve an even temperature distribution. It is also possible to achieve the flow line by suitable inserts in the container 4.

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 4005915 A1 [0003]
• WO 2014/029036 A1 [0003]

Claims (20)

Your main claim could be here→ System (1) for a heating and/or cooling ceiling for heating and/or cooling rooms, comprising at least - a ceiling lining, - a section (2) of a first circuit (3a, 3b), wherein the first circuit (3a, 3b) and whose section has a first medium flowing through it and the first medium assumes a specified temperature of the first circuit (3a, 3b), - at least one container (4) with at least one first (5) and at least one second connection (6), the tank (4) being mounted in or on the ceiling covering, characterized in that - the system has a second circuit (7), the tank (4) being part of the second circuit (7) and a second medium flows through the second circuit (7), - the first connection (5) of the container (4) is provided for supplying the second medium and the second connection (6) of the container (4) is provided for removing the second medium, - a decoupling device (8) is set up to physically separate the section of the first circuit (2) and the second circuit (7) from one another and to establish heat transfer from one medium to the other. <- The red text is not printed. System (1) after claim 1 , characterized in that the decoupling device (8) has a device (9) for transferring the heat from circuit 2 to circuit 7 or vice versa, in particular a heat exchanger. System (1) after claim 1 or 2 , characterized in that several containers (4) are combined into groups (10) and the containers (4) of a group (10) are connected to one another in series and/or in parallel. System (1) after claim 3 , characterized in that a plurality of groups (10) are connected to one another in series and/or in parallel, a distribution means (11 a, 11 b) dividing the second medium between the groups (10) connected to one another. System (1) according to one of Claims 1 until 4 , characterized in that the system (1) comprises at least one temperature control means (T), preferably a room thermostat, advantageously each group (10) is connected to a temperature control means (T). system according to one of the Claims 1 until 5 , characterized in that the second circuit (7) is designed as a low-pressure circuit. System (1) after claim 6 , characterized in that the decoupling device (8) has a device (12) for adjusting the pressure, in particular a pump, within the second circuit (7). System (1) according to one of Claims 1 until 7 , characterized in that the second circuit (7) is designed as a low-temperature circuit. System (1) after claim 8 , characterized in that the decoupling device (8) has a device (13) for temperature adjustment within the second circuit (7), in particular a mixing valve (13). System (1) according to one of Claims 1 until 9 , characterized in that the at least one container (4) rests in a metal trough and/or on a mineral cover plate or is inserted in intermediate layers and is in thermally conductive connection with the metal trough and/or the mineral cover plate. System (1) after claim 10 , characterized in that the container (4) is thin-walled. System (1) according to one of Claims 1 until 11 , characterized in that the at least one container (4) is made of a plastic film (14) or a metal foil or coated metal foil, preferably an at least two-layer plastic composite film, with the exception of the connections being made watertight on all sides. System (1) according to one of Claims 1 until 11 , characterized in that the at least one container (4) has a base and a height which is small in relation to the extension of the base, the container (4) or a combination of containers (4) approximately the internal dimension of a metal pan or has the extent of a ceiling panel and lies extensively with the base area facing the metal trough or the ceiling panel. System (1) according to one of Claims 1 until 12 , characterized in that the first (5) and second (6) connections of the container (4) are arranged in such a way that the flow through the container (4) is as uniform as possible. System (1) according to one of Claims 1 until 14 , characterized in that the Entkop plunging device (8), the distribution means (1 1a, 11b) and each temperature control means (T) are interconnected with thin-walled, kink-resistant hoses. System (1) according to one of Claims 1 until 15 , characterized in that the temperature control means (T) and each container (4) of a group (10) are interconnected with thin-walled, flexible hoses. Method for operating a system (1) according to one of the preceding claims, the method having at least the following steps: - the section (2) of the first circuit (3a, 3b) is traversed by a first medium, - the first medium assumes a temperature of the first circuit (3a, 3b), - the first medium flows through the decoupling device (8), - within the decoupling device (8), the second medium is heated or cooled to a temperature via a device (9) for transferring heat, - the second medium flows through the second circuit (7) with the at least one connected container (4), - the at least one container (4) lies in a metal trough and/or on a mineral cover plate and is in thermally conductive connection with the metal trough and/or the mineral cover plate, - Due to the temperature difference between the at least one container (4) and the surrounding space, heat is supplied to the space or heat is dissipated. procedure after Claim 17 , characterized in that the inflow into the at least one container (4) is controlled via the temperature control means (T). Procedure according to one of claims 17 until 18 , characterized in that the pressure in the second circuit (7) is adjusted via a device (12) for adjusting the pressure. Procedure according to one of claims 17 until 19 , characterized in that the temperature in the second circuit (7) is set via a device (13) for setting the temperature.

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