A HEATING OR COOLING DEVICE ARRANGED BELOW THE CEILING

Abstract: A heating or cooling device comprising a long box-shaped element (11) composed by metal profiles and intended to be suspended from a ceiling and which is in heat-conducting contact with one or more conduits (20) for a heating and/or cooling agent. According to the invention the device is utilized for heating or cooling resp. the intake air to the room in question by leading the air into one end of the element (11) and out at the opposite end, where it is brought to turn back and pass along the outside of the element along at least a part of the length thereof before it is distributed in the room.

Description: A heating or cooling device arranged below the ceiling The present invention refers to a heating- or cooling device of the kind comprising a long box-shaped element of a heat conducting material and which is intended to be suspended from a ceiling of a room and a heating - and/or cooling element, e.g. one or more conduits for a heating - and/or cooling agent, and which extends through said box-shaped element in a heat conducting contact with this and where an inlet for intake air to the room is arranged at one end of the box-shaped member and at its opposite end there is arranged an outlet for the air, which thus is forced to pass through said element for being heated or cooled. Background of the invention Such heating and cooling devices are suspended to the ceiling as baffles under the joists for giving off heat to or absorb heat from the room substantially through radiation. They usually comprise light metal profiles connected to each other and provided with contact members shaped after the circumference of the conduits . In the US patent specification 1.410.706 is disclosed a floor heating device which also heats the recirculated air to the room. In the German patent specification 893.855 is shown a ceiling heating device comprising a panel in the form of the perforated metal plate which is in heat conducting contact with conduits for a heating agent, at which air can be blown in above the metal plate, where it is heated before it is distributed in the room by way of openings in the metal plate. In the Swedish patent specification 104.408 is shown a heating device where air is heated by being blown past radiators. The obiect of the invention and its most important features The object of the invention is to by simple means utilize heating and cooling devices of the kind mentioned above for heating and cooling respectively the intake, air through the room in question in a very effective way. This has been achieved by the fact that means are arranged at said outlet forcing the air to turn substantially 180 back and pass along the outside of the element along at least a part of the length thereof. Description of the drawings The invention will now be further described with reference to a pair of embodiments shown in the accompanying drawings. Figure 1 shows schematically a section through a room provided with a heating and cooling device according to the invention. Figure 2 shows on a larger scale the encircled portion in figure 1. Figure 3 shows in perspective and partly broken a device according to the invention. Figure 4 is a section according to the line IV-IV in fig. 3. Figure 5 shows in perspective and partly broken a second embodiment of the invention. Figure 6 shows a section through the device according to figure 5, and Figure 7 shows a section through a room provided with a device according to figure 5 and 6. Description of embodiment In figure 1 is shown a room in which a box-shaped baffle 11 composed by light metal profiles has been applied under the joists 10. Above the joists there is shown an intake air conduit 12 for fresh air to the room. From the intake air conduit 12 there is a connection pipe 13 to one end of the baffle. OMPI In fig. 4 is shown a cross-section through a baffle 11 , from which can be seen that this is composed by a . pair of metal profiles 14 and 15, the upper profile 14 of which is provided with hook-shaped shoulders 16 intended to snap into correspon¬ ding recesses 17 in the second lower profile 15. The profiles further are provided with contact members 18 and 19 facing each other and receiving a conduit 20 for a heating or cooling agent . The free space 4 inside the upper profile 14 can be utilized for e.g. wire laying of electric wires. The lower profile has an inner space 20, which makes the flow channel for the intake air which is introduced into the baffle through a connection pipe 13. The air is heated or cooled respectively on its way through the channel 22 and passes out at 23 at the opposite end of the baffle 11 by way of an air regulating means 24 , which consists of two hollow cylinders outside each other and rotatable relative to each other. The air is then forced to o turn 180 by a cover 25 arranged at some distance from the outlet end of the baffle 11 and the side edges 26 of which overlapping the end portion of the. baffle. The cover 25 has a somewhat larger dimension as compared to the cross section size of the baffle 11, so that air can pass between the side edges 26 of the cover and the outside of the baffle, as is shown in figure 2. The air will thus stroke along the outside of the baffle 11 along at least a part of its length, at which it is further heated or cooled respectively before it is distributed in the room. In the embodiment shown in figure 5-7 the baffle 11 is composed by a pair of metal profiles 27 having a substantially U-shaped cross section and which are fixed towards each other by means of a pair of connecting rails 28 to a box-shaped configuration. Conduits for a heating agent and a cooling agent 20 resp. 20a extend in loops backwards or forwards through the baffle 11 at the corner thereof as is indicated in figure 5. The conduits 20 and 20a are fixed to the corner of the baffle by means of grooves 29 in the profiles 27 and convection profiles 30 provided with heating and cooling flanges 31 respectively. The primary air is blown into the rear end of the baffel by means of an induction nozzle 32 at which room air is induced through a grating 35 at the rear end of the baffle and which together with the primary air is tempered within the baffel and blown out at the front end of the baffel (the outer wall end ) . The device is adapted for rooms e.g. offices, where both excess and deficit of heat occur. During the morning there is a heat requirement at which the heat valve 33 is open. When the ventilation is started the heat requirement is increased since also the primary air has to be heated to room temperature. In the middle of the morning the heat requirement passes into a heat excess through the internal heat contribution, at which the heat valve 33 is closed and the cooling agent valve 34 is opened. After working hours the heat excess passes into a heat requirement again. The upper side of the baffle 11 is preferably designed as a table recess for receiving electrical, tele- and terminal cables. The baffle 10 constitutes a primary suspension system for armatures, sound-absorbents etc. The invention is of course not limited to the described and shown embodiments but can be varied within the scope of the accompanying claims. OMPI

Claims: C L A M S 1. A heating- or cooling device of the kind comprising a long box-shaped element ( 11 ) of a heat conducting material and which is intended to be suspended from a ceiling of a room and a heating- and/or cooling element (20) , e.g. one or more con¬ duits for a heating- and/or cooling agent, and which extends through said box-shaped element (11) in a heat conducting contact with this, and where an inlet (13) for intake air to the room is arranged at one end of the box-shaped member (11) and at its opposite end there is arranged an outlet (23) for the air, which thus is forced to pass through said element for being heated or cooled, c h a r a c t e r i z e d i n, that means (25, 26) are arranged at said outlet forcing the air to turn substantially 180 back and pass along the outside of the element (11 ) along at least a part of the length there¬ of. 2. A device according to claim 1 , c h a r a c t e r i z e d i n, that an air regulating means (24) is arranged in connection to said outlet ( 23 ) . 3. A device according to claim 1 or 2, c h a r a c t e r i z e d i n, that at the outlet end of said element (11 ) at some distance therefrom there is arranged a cover (25) with somewhat larger dimension than the outer dimension of the element and the side edges (26) thereof overlapping the end portion of the element, said cover causing the air leaving the element to turn back along the outside of the element. 4. A device according to any of the preceding claims, c h a r a c t e r i z e d i n, that said inlet (13) is designed as an induction nozzle (32) intended to induce room air to the element (1 ) together with the intake air. OMPI WIPO - 5. A device according to any of the preceding claims, c h a r a c t e r i z e d i n, that said conduit(s) (20, 20a) are arranged to extend backwards and forwards at least once through the box-shaped member (11). 6. A device according to claim 5, c h a r a c t e r i z e d i n, that the conduit(s) (20, 20a) is/are arranged at the corner portions of said box-shaped member (11) . 7. A device according to claim 6, c h a r a c t e r i z e d i n, that the conduit(s) (20, 20a) is/are in heat conducting contact with convection profiles (30) having heating- and cooling flanges (31) respectively. OMPI

Inventors: BERNTSSON THORE, BERNTSSON, THORE
Applicants: FAREX KLIMATSYSTEM AB
Application year: 1984
Main classification: F24H3
IPC codes: F24D3