AT17894U1 - Heat transfer device for cooling or heating rooms - Google Patents

Abstract

The invention relates to a heat transfer device for cooling or heating rooms, comprising a frame element (1) which can be mounted at a distance from the ceiling of the room and a register (2) through which fluid can flow for cooling or heating. The frame element (1) has at least one, preferably three receptacles (3) for functional elements, for example in the form of different decorative and air-permeable visible surface elements (4), lighting elements (5), acoustic elements (6) or the like, with the register (2) above the functional elements in the frame element (1) can be inserted and optionally fixed. The invention further relates to a suspended grid ceiling assembly having at least one heat transfer device as described above.

Description

Description

The invention relates to a heat transfer device for cooling or heating of rooms comprising a spaced from the ceiling mountable frame element and a register for cooling or heating through which fluid can flow.

Heat transfer devices, such as chilled ceiling sails, which can also be used for heating, have been known for many years. Such devices generally include a cooling tube register which contacts a corresponding surface for heat transfer or absorption. The surface often has slits or openings to increase the amount of convection. However, in most devices, much of the heating or cooling power is given off in the form of radiant energy and a small amount by convection. In some versions, the side of the chilled sail ceiling facing the ceiling is also equipped with insulating material to increase performance, in order to allow energy to be emitted or absorbed only in the direction of the room side.

The known systems have the disadvantage that they have a complex design, which means that they are expensive on the one hand and heavy on the other hand, which makes assembly difficult and therefore more expensive. In many cases, the cooling or heating capacity is unsatisfactory, which means that the increased effort involved in production and assembly is often not economically viable. Systems with higher performance are correspondingly clumsy and not visually appealing, which is why they are usually only used in industrial environments and not in residential or office areas. The same applies to systems with an increased proportion of convection, in which the registers are installed so that they are visible, which also severely limits the design options in the areas mentioned above. Apart from that, the known solutions are designed solely for the functionality as a cooling or heating element and do not offer any flexibly modular selectable additional functions, such as sound insulation, light, ventilation, etc.

The object of the present invention is therefore to eliminate the disadvantages mentioned above and to create a heat transfer device which has an increased performance by the convection component in the heat emission or absorption is significantly increased. At the same time, the device should be easy, simple and inexpensive to produce and allow simple assembly. On the visible side in the spatial direction, the device should also enable a modular design, so that the device can be used flexibly in as many application scenarios as possible.

This object is achieved according to the invention in that the frame element has at least one, preferably three receptacles for air-permeable functional elements, for example in the form of different decorative visible surface elements, lighting elements, acoustic elements, the register being insertable into the frame element above the functional elements and optionally being fixable . Due to the air permeability of the functional elements, it is possible to achieve an increased exchange of air with the register, as a result of which the proportion of convection and thus the cooling or heating capacity of the device is significantly increased. Due to the increased cooling or heating capacity, the register and thus also the frame element and the brackets on the building can be made correspondingly light and inexpensive so that they can also be mounted unobtrusively in the living or office area. With three individual mounts in the frame element, various functional elements can be combined as desired, which significantly increases the design options.

It is a preferred embodiment that the recordings are formed by a frame-like enclosure, in which the functional elements are inserted and optionally latched. For installation, only the frame element has to be mounted on the ceiling, which is just as easy to do as installing a conventional radiator. The functional elements are then placed in the frame element, with the frame element ensuring that the elements are correctly centered. If necessary, the functional elements can also be locked in the frame element, but in the simplest case it is sufficient if they are only inserted and due to gravity in their respective position

Rest frame element by the recording is designed slightly smaller than the functional element itself.

According to a preferred embodiment, it is provided that the functional element designed as a visible surface element comprises an air-permeable lattice structure, which is optionally covered with a decorative fabric layer on the downward-facing visible side, and which has a layer of acoustic fleece on the upper side facing the ceiling having. The grid structure allows maximum air permeability. The fabric layer on the visible side allows flexible design in terms of print, material or weaving technique. The lattice structure can be made of metal or plastic or wood or composite material. It is also possible to use an equivalent design in the form of lamellae instead of a lattice structure. In the case of an embodiment made of wood, for example, these can also be used directly on the visible side without covering.

It is a feature of a further preferred embodiment that the functional element designed as a light-emitting element has one or more LED light sources and optionally openings for the passage of air. LED lamps can be used in the smallest of spaces with a low overall height. It is possible to provide either larger luminous areas or several small ones and to use the resulting gaps for the passage of air. Due to the low heat development in LED lights, the cooling capacity of a device is only slightly restricted, particularly if only one of the three functional elements in the frame element is designed as a light. Depending on the structure, the functional element designed as a light element may be slightly higher than other functional elements, which is why when several different functional elements are combined within a frame element, vertical spacer elements can be provided at the edge of the lower functional elements, so that a level support of the register located above is ensured.

In a further preferred embodiment it is provided that the designed as an acoustic element functional element on the downward-facing visible side has a sound-absorbing surface made of a porous, perforated or slotted material, this sound-absorbing surface is designed air-permeable. In the case of acoustic elements, it is desirable to correspondingly enlarge the surface of the element by means of appropriate configurations, so that the incident sound is reflected as often as possible within the element and not in the direction of the room. The perforated, open-cell porous or slotted structures required for this also allow air to pass through, which means that the convection performance of the register is not significantly affected. In a possible embodiment, it can also be provided that there is no or hardly any air passage in the area of the acoustic elements as long as sufficient convection flow is ensured via adjacent functional elements.

It is also a preferred feature that the register through which fluid can flow comprises two rows of tubes arranged one above the other, with the individual tubes of one row of tubes being arranged above or below the interstices of the other row of tubes, with at least one within a register being transverse to the longitudinal direction of the tubes arranged spacer is provided, which secures the tubes at a uniform distance from each other. With this arrangement, a maximum cooling and heating capacity with a significantly increased proportion of convection can be achieved in the smallest of spaces. The tubes of the register are made of plastic with a preferably square cross-section. The spacers serve to fix the tubes of the register, which are flexible per se, at the correct distances from one another. In the case of a register, for example, two spacers can be provided which run transversely to the rows of tubes of the register. In the assembled state, the spacers are located, for example, above the U transition area between two receptacles of the frame element, i.e. exactly above a connecting web in the frame element, which means that the convection performance of the register is not additionally influenced by the spacers.

It can be provided according to a further preferred embodiment that

a fresh air distributor is provided on one side of the frame element, preferably on the side on which the connection points for the register are also located, the fresh air distributor having an inlet opening for a fresh air supply line and air outlet openings aligned in the direction of the rows of tubes of the register. In this embodiment, the heat transfer device can be used at the same time to enable a supply of fresh air invisibly. No other air supply openings that are visible from the room are required and the supplied fresh air is cooled or heated by being routed via the register as soon as it enters. The distribution via the register also avoids draughts, since no forced air flow is directed in the direction of the room.

According to a preferred variant, it is a further feature that the frame element is designed as an element suspended from the ceiling made of metal, wood or plastic. In the case of a freely suspended heat transfer device, the frame element can be designed accordingly so that it can also be used in a visually appealing manner in a wide variety of application scenarios.

According to an alternative preferred variant, it is provided that the frame element forms a section of a suspended grid ceiling. A suspended grid ceiling is often installed in office buildings, for example. The frame element can also form a section of this grid ceiling, with the individual functional elements and the register and optionally the fresh air supply being mounted above the functional elements.

Finally, it is a further feature to use the heat transfer device according to the invention in a grid ceiling arrangement, in such a suspended grid ceiling arrangement in a room per heat transfer device at least one associated passive convection element is provided in the form of an air-permeable grid element. So that the proportion of convection and thus the cooling or heating capacity of the heat transfer device is as high as possible, it makes sense to provide further passive convection elements in an otherwise closed grid ceiling arrangement. A passive convection element can, for example, correspond to an air-permeable functional element that enables an unimpeded exchange of air. The entire air space between the grid ceiling and the actual ceiling is available for air exchange and can be used for the convection flow when heating or cooling. It has been shown that a single passive convection element per heat transfer device used is sufficient for this. With this arrangement, the storage mass of the concrete cover above is also cooled during cooling operation, which has an advantageous effect in the case of peak heat loads.

The invention will now be described in greater detail using an exemplary embodiment and with the help of the accompanying figures. show it

1 shows a schematic plan view of a possible embodiment of a heat transfer device according to the invention,

[0017] FIG. 2 shows a longitudinal sectional view through the device according to FIG. 1,

[0018] FIG. 3 shows a cross-sectional view through the device according to FIG. 1,

Figure 4 COS cross-sectional view through an alternative embodiment of the device;

[0020] FIGS. 5 and 6 are schematic top views of different embodiments of a frame element,

[0021] FIGS. 7 to 10 schematic top views of various embodiments of functional elements,

Fig. 11 shows a schematic room arrangement with a suspended grid ceiling arrangement and

12 shows a schematic spatial arrangement with heat transfer devices according to the invention, which are designed as separate elements.

The heat transfer device shown schematically in FIG. 1 in a plan view and in FIG. 2 in a longitudinal sectional view comprises a frame element 1 which can be mounted at a distance from a ceiling. Within the frame element 1, receptacles 3 for visible surface elements 4 are provided. The receptacles 3 are formed by the peripheral frame itself and by connecting webs 18 (see FIGS. 5 and 6), which form a support frame for the visible surface element 4 inserted from above. The individual visible surface elements 4 can either only be inserted into the respective receptacles 3, or can also be latched to the frame element 1 in these, if necessary.

In the embodiment according to FIG. 2, three air-permeable lattice structures 7 are provided as visible surface elements 4, which are covered with a layer of acoustic fleece 8 on the side facing upwards. The register 2 through which fluid can flow is located above these visible surface elements 4 for cooling or heating. The register 2 has two rows of tubes 10 which are arranged one above the other, the tubes 19 of the upper row of tubes 10 each lying in the horizontal direction above the spaces between the tubes 19 of the lower row of tubes 10 . This position is ensured by appropriate spacers 11. The spacers can be made of plastic, for example, and have locking positions for the individual tubes 19 at the corresponding points, so that in the assembled state the individual tubes 19 are at a maximum distance from one another and thus also allow an optimal convection flow through the register 2. The positions of the individual tubes 19 relative to one another are best seen in FIGS. 3 and 4, where a cross section through the rows of tubes 10 is shown schematically.

The register 2 has on one side of the heat transfer device the two connection points 12 in order to be able to connect the device to other devices and finally to the cooling or heating circuit of the building. In the embodiment according to FIGS. 1 to 3, a fresh air distributor 13 is also provided within the frame element 1, which is arranged partially above the register 2 on the side of the connection points 12. The fresh air distributor 13 has a ceiling-side inlet opening 14 to which a fresh air supply line present in the building can be connected. Furthermore, the fresh air distributor 13 has air outlet openings 15 which are aligned in the direction of the rows of tubes 10 of the register 2 . The air outlet openings 15 conduct the incoming fresh air both between the two rows of tubes 10 and over the upper row of tubes 10, as a result of which the air is directly cooled or heated. Due to the even distribution over the register, the fresh air mixes with the existing convection flow and there are no drafts in the room. As shown in FIGS. 2 and 3, the heat transfer device can be closed off at the top by a cover if a fresh air distributor 13 is present, so that the supplied fresh air is forced out via the register 2 and then into the room. However, the arrangement can also be made without a cover, for example if the heat transfer device is part of a grid ceiling arrangement.

4 shows a heat transfer device in a cross section without a fresh air distributor 13 . In all of the schematic types of embodiment according to FIGS. 1 to 4, only visible surface elements 4 with air-permeable lattice structures 7 are shown as functional elements.

FIGS. 5 and 6 schematically show different embodiments of frame elements 1. FIG. 5 shows a freely suspended frame element 1 with three receptacles 3 for functional elements. Depending on the application, the frame element 1 can be made of metal, plastic, wood or a composite material. The recordings 3 are formed by the frame itself and the connecting webs 18 . In FIG. 6, the frame element 1 is a section of a grid ceiling arrangement, the frame element 1 also having three receptacles 3 for functional elements. In this case the frame

menelement 1 is an integral part of a grid ceiling arrangement, the individual visible surface elements 4, the register 2 and possibly the fresh air distributor 13 being inserted at the appropriate positions within the grid ceiling arrangement or optionally connected to the corresponding section of the frame.

In the figures 7 to 10 different functional elements are shown schematically, which can be inserted or fixed in the receptacles 3 in a frame member 1. 7 shows a simple visible surface element 4 with an air-permeable lattice structure 7, as also shown in FIGS. 1 to 4. This lattice structure can be made of different materials and, if necessary, can also be covered with an air-permeable material on the visible side. FIG. 8 shows a functional element designed as an acoustic element 6, which is formed by a perforated plate, for example. 9 shows a lighting element 5 with an LED lighting means 9. A design with a number of small lighting means can also be provided here, in which case the intermediate spaces between the lighting means can serve for the passage of air through the heat transfer device. If several different functional elements are combined with one another in a frame element 1, it may be the case that, for example, the lighting element 5 with the LED lighting means 9 has a slightly higher overall height than the adjacent visible surface elements 4 or acoustic elements 6. In this case, it can be advantageous to provide appropriate spacer elements so that the register 2 located above it lies flat when installed. Finally, FIG. 10 shows a visible surface element 4 which is formed from broader longitudinal struts and wherein the visible surface element 4 covers all three receptacles 3 of a frame element 1 . The examples of functional elements shown are only exemplary and illustrate the high flexibility and possibility of variation in the design of the heat transfer device for a wide variety of application scenarios. Due to the highly modular construction from simple, light elements, the device also has a low weight and can therefore also be installed particularly easily anywhere.

Figure 11 shows schematically an example of a room with a suspended grid ceiling arrangement. Some of the grid elements defined by the frame of the grid ceiling are designed as a heat transfer device. In the example shown, five heat transfer devices are provided, each comprising a register 2 which spans three grid elements. The individual registers 2 are connected to one another in series and connected to the cooling or heating circuit of the building. Of the functional elements, the two outer devices each have visible surface elements 4 with a lattice structure 7 . The middle device has acoustic elements 6, and the two devices located between the edge and the center each carry a lighting element 5 with LED lamps 9 in the middle receptacle 3. The device lying furthest to the right also has a fresh air distributor 13, which is also equipped with a corresponding supply of the building is connected. Each heat transfer device is assigned a passive convection element 16, which is formed by an air-permeable grid element. In the example shown, the passive convection elements 16 are each arranged next to the devices near the windows 20 of the room. This arrangement makes it possible for a convection flow to take place over the entire air space above the grid ceiling arrangement. Depending on whether it is being cooled or heated, the air flows through the passive convection element 16 into the space between the actual room ceiling and the grid ceiling arrangement and via the heat transfer device through the functional elements back down into the room or vice versa. This results in a very effective distribution of the cooling or heating capacity and creates a pleasant, uniform room climate without draughts. In addition, the actual ceiling can be used as additional storage for the cooling capacity to buffer any peaks in demand.

Fig. 12 shows another embodiment of a room with heat transfer devices arranged therein, which are designed as separate elements. A device with three visible surface elements 4 is located near the window 20. In addition, the fresh air distributor 13 is also provided in this device. The normally arranged adjoining ones

Both heat transfer devices each have a functional element with LED lighting means 9 and two visible surface elements 4 each. The heat transfer device arranged furthest in the center of the room has two functional elements with LED lighting means 9 and an acoustic element 6 . Thanks to the modular design with different functional elements, a wide variety of functions can be combined in light devices that are easy to assemble.

Claims (10)

Expectations 1. Heat transfer device for cooling or heating of rooms, comprising a frame element (1) that can be mounted at a distance from the ceiling of the room and a register (2) through which fluid can flow for cooling or heating, characterized in that the frame element (1) has at least one, preferably three receptacles ( 3) for functional elements that are permeable to air, for example in the form of different decorative visible surface elements (4), lighting elements (5), acoustic elements (6), the register (2) being insertable into the frame element (1) above the functional elements and optionally being fixable. 2, heat transfer device according to claim 1, characterized in that the receptacles (3) are formed by a frame-like enclosure, in which the functional elements are inserted and optionally latched. 3. Heat transfer device according to claim 1 or 2, characterized in that the functional element designed as a visible surface element (4) comprises an air-permeable lattice structure (7), which is optionally covered with a decorative fabric layer on the visible side pointing downwards, and which on the side facing the ceiling executed top has a layer of acoustic fleece (8). 4. Heat transfer device according to claim 1 or 2, characterized in that the functional element designed as a lighting element (5) has one or more LED lighting means (9) and optionally openings for the passage of air. 5. Heat transfer device according to claim 1 or 2, characterized in that the functional element designed as an acoustic element (6) has a sound-absorbing surface made of a porous, perforated or slotted material on the downward-facing visible side, with this sound-absorbing surface being designed to be air-permeable. 6. Heat transfer device according to one of Claims 1 to 5, characterized in that the register (2) through which fluid can flow comprises two rows of tubes (10) arranged one above the other, with the individual tubes (19) of a row of tubes (10) each being above or below the intermediate spaces of the another row of tubes (10), with at least one spacer (11) arranged transversely to the longitudinal direction of the tubes (19) being provided within a register (2) and securing the tubes (19) at a uniform distance from one another. 7. Heat transfer device according to one of claims 1 to 6, characterized in that on one side of the frame element (1), preferably on the side on which the connection points (12) for the register (2) are, a fresh air distributor (13) is provided, the fresh air distributor (13) having an inlet opening (14) for a fresh air supply line and air outlet openings (15) aligned in the direction of the rows of tubes (10) of the register (2). 8. Heat transfer device according to one of claims 1 to 7, characterized in that the frame element (1) is designed as an element suspended from the ceiling made of metal, wood or plastic. 9. Heat transfer device according to one of claims 1 to 7, characterized in that the frame element (1) forms a section of a suspended grid ceiling. 10. grid ceiling arrangement with at least one heat transfer device according to claim 9, characterized in that in a suspended grid ceiling arrangement in a room per heat transfer device at least one associated passive convection element (16) is provided in the form of an air-permeable grid element. 4 sheets of drawings