METHOD IN AND DEVICE FOR AIR-CONDITIONING OF A ROOM

Abstract: The invention concerns a method and a device for air-conditioning of a room, wherein the air in the room is circulated through an air-conditioning device (10), whereby said recirculation air is filtered and heat is introduced into said air or heat is removed from said air, while the circulation of the recirculation air is produced by means of a blower (20) present in the air-conditioning unit (10). Through the air-conditioning unit (10) it is possible to introduce fresh air and/or through the air-conditioning unit (10) it is possible to remove impure air out of the room (N). In the method for air-conditioning of a room, such a device (10) for air-conditioning of a room is employed as comprises at least one lighting unit (16a and/or 16b) on one side face of the air-conditioning unit, whereby, in the method, impure air is removed out of the room optionally either directly out of the room space and/or through the lighting unit (16a and/or 16b).

Description: Method in and device for air-conditioning of a room The invention concerns a method in air-conditioning of a room and a device for air-conditioning of a room. From prior art, methods for air-conditioning of a room are known wherein room air is circulated through a filter and heat-exchanger construction by means of an air flow produced by a blower. Part of the room air is removed through the unit for air-conditioning of the room by means of an air flow produced by means of a blower device in the central apparatus. From prior art, no satisfactory solution of equipment is known wherein it is possible to combine a device for air- conditioning of a room with a light fitting and in which device it has been realized how to remove the heat from the hght fitting in an optimal way. Thus, the object of the invention is a method and a device of an entirely novel type for air-conditioning of a room, wherein it has been realized how to opti- mally combine introduction of air flows into the room, recirculation of air flows through the device, and passing of exhaust-air flows in a centralized way through the device further into the exhaust-air duct and out of the building. In the present application, a method and a device of an entirely novel type for air-conditioning of a room are described, wherein part of the air in the room is recirculated so that it is fitted to pass out of the space between the ceiling of the room space and the air-conditioning unit itself into an opening placed above the device and through said device further into a filter device, into a heat-exchanger, and, guided by a bottom plate, back into the room space. According to the present invention, part of the room air is removed through a hght fitting provided in the air-conditioning unit so that, if necessary, the air to be removed can be guided to flush the faces of the hght fitting, advantageously a fluorescent tube or a lamp of other sort, whereby, when the temperature of the fluorescent tube or the lamp is lowered, its radiation capacity is increased and the heat of the light fitting can be removed out of the room space. According to the invention, the above solution is carried out so that a collector duct is fitted behind the lighting unit, room air being removed through said duct when desired. The method for air-conditioning of a room in accordance with the invention is mainly characterized in that, in the method for air-conditioning of a room, such a device for air-conditioning of a room is employed as comprises at least one lighting unit on one outer face of the air-conditioning unit, whereby, in the method, impure air is removed out of the room optionally either directly out of the room space and/or through the lighting unit, and whereby mixing of fresh air and recirculated air is fitted to take place inside the air-conditioning unit or at direct proximity of said unit, and whereby, in the method, air is made to flow between the slats in a latticework part related to the light-fitting hood of the device while the light-fitting hood and the related latticework surround the whole of the remaining device construction, the latticework part operating as a member guiding the flow both of the recirculated air and of the fresh air introduced into the room as well as of the exhaust air. The device for air-conditioning of a room in accordance with the invention is mainly characterized in that the air-conditioning unit comprises at least one lighting unit on the lower face of the device, whereby, in the solution of equip¬ ment, the light-fitting hood is fitted at the proximity of the lower face of the device to surround the lighting unit, and that the light-fitting hood comprises a latticework connected to its outer face and consisting of a number of slat parts placed side by side, said slat parts being fitted to direct the air flow, and in which construction the light-fitting hood penetrable by hght and the latticework are fitted to surround the whole of the remaining device construction. The invention will be described in the following with reference to some pre¬ ferred embodiments of the invention illustrated in the figures in the ac¬ companying drawing, the invention being, however, not supposed to be confined to said embodiments alone. Figure 1A is an axonometric view of an air-conditioning unit in accordance with the invention. Figure IB is a sectional view taken along the line I-I in Fig. 1A In the illus- tration, the device is shown as mounted on the ceiling. Figure 1C is a sectional view taken along the line II-II in Fig. 1A Figure ID is a sectional view along the line 111-111 in Fig. 1A Figure 2A is a separate illustration of the system of exhaust-air ducts and of the draining of condensed water. Figure 2B is a partial illustration of the duct passing behind the lighting unit and of the passage of the exhaust air through the lighting unit. Figure 2C is a sectional view taken along the line IV-IV in Fig. 2B on an enlarged scale. Figure 3A is an axonometric partial illustration of the flow of fresh air and recirculated air from the device into the room space. Figure 3B is a sectional view along the line IV-IV in Fig. 3A Figure 4 is an axonometric view of a second advantageous embodiment of the device in accordance with the invention and of the distribution of the recircu¬ lated air from the device in three different directions. Figure 5A shows a light-fitting hood and a latticework related to the device in accordance with the invention. Figure 5B is a schematical cross-sectional view of a second advantageous embodiment of the circulation of air and of the positioning of the lighting units. Figure 5C is an illustration of principle of the device shown in Fig. 5B viewed from the top. Figure 5D is an axonometric view of an equipment in accordance with the invention with the parts of the equipment taken apart from one another. Figure 5E is a partial illustration of a hinge between the hood and the lattice¬ work. Figure 5F shows a locking device by whose means the hood is locked onto the latticework part. Figure 5G shows the fastening of the latticework part to the ceiling construction. Figure 6 shows the mounting of a shield plate placed underneath the frame to the remaining device frame by means of hinges, while the shield plate has a group of fluorescent tubes on its lower face. Figure 7A shows a flow diagram of the air-conditioning system related to the air-conditioning device. Figure 7B shows a circulation diagram of the heat-transfer medium of the cooling/heating arrangement. Fig. 1A is an axonometric view of an air-conditioning unit in accordance with the invention. Bresh inlet air arrives in the device 10 in the way shown by the arrow L^. Out of the device 10, the fresh air is made to flow into the room space H in the way shown by the arrow , c . The arrows L^ illustrate the flow of the exhaust air into the device, and the arrow _L, d shows the outflow of the exhaust air out of the device 10. In the figure, the arrows L^ illustrate the arrival of recirculation air in the device 10, and the outflow of the recirculation air out of the device into the room space H is illustrated by the arrow Lg d . The air-conditioning unit 10 comprises a frame 11, which is provided with side walls lla,...lla 4 . By means of the bottom plate lib, the recirculation air is directed into the room space. As is shown in Fig. 1A, fresh inlet air is passed along the duct 12 into the air- conditioning unit 10. Air is removed out of the room through the outlet duct 13. In an air-conditioning unit in accordance with the invention, recirculation air L 3 is circulated so that the recirculation air is passed into the device in the way shown by the arrow L^ through an inlet opening 14 placed at the top of the frame 11, and the recirculation air is removed out of the air-conditioning unit 11 into the room space, in the way shown by the arrows I^, through the discharge opening 15 for recirculation air. The air-conditioning unit in accordance with the invention comprises at least one lighting unit 16a, which is advantageously provided with a fluorescent tube. In the air-conditioning unit shown in Fig. 1A, a first lighting unit 16a is placed on the side wall 11a, of the frame 11 at the top portion of the side wall, and a second lighting unit 16b is placed on the opposite side wall 11^ of the frame 11 at the top portion of the side wall. The lighting unit 16 may also be placed on the bottom face of the equipment. A solution of equipment as shown in Fig. 1 may comprise a hght-fitting hood surrounding the device, as is shown in Fig. 5 and a related latticework part, from which the latticework part and the hght- fitting hood are attached to the ceiling. As is shown in Fig. IB, the air in the room H is circulated by means of a blower 20. The recirculation air is introduced in the way shown by the arrow l^. through the inlet opening 14 at the top of the frame so that the recirculation air passes through a filter 17 and a heat exchanger 18 into an inlet chamber 19, as is shown by the arrow L^, and passes further, by the effect of the suction produced by the blower 20, to the pressure side of the blower into an outlet chamber 21. The inlet chamber 19 and the outlet chamber 21 are separated by a partition plate 22, which has an opening 23 for recirculation air. The recirculation air arrives in the outlet chamber in the way shown by the arrows 1^. and flows out of the outlet chamber 21 further horizontally towards the discharge opening 15 for recirculation air in the way shown by the arrow Lj d (in Fig. 1A). The plate lib at the bottom of the frame 11 guides the recirculati¬ on air into the discharge opening 15 and further into the room space H. Above the blower 20, there is a shield plate 24, which prevents falling of condensed water into the blower device 20. The partition plate 22 acts as a collector plane for condensed water, via which the condensed water flows into an intermediate storage site 25 for condensed water and further into a drain pipe 26 and through the drain pipe 26 further into the ultimate storage tank 27. Fig. 1C shows an arrangement of equipment used in the removal of condensed water. The ultimate storage tank 27 for condensed water, placed in the duct 33, comprises an evaporator 28, advantageously an electric resistor, by whose means the water that has drained into the ultimate storage tank 27 is evaporated into the exhaust air. The air duct 29 placed behind the lighting unit 16a acts as a collector duct for exhaust airin its side faces, the air duct 29 comprises openings 29a, through which air to be removed out of the room is sucked. At the mouth of the air duct 29 there is a regulating damper 30, by whose means the end opening 31 of the air duct 29 is closed, and in a corresponding way, by means of the same damper, the exhaust air opening 32 opened out of the device 10 into the room space H is opened or closed. The exhaust air is passed further through the duct 33, as is shown by the arrow L^,, into the exhaust duct 13. At the end of the device placed next to the exhaust duct 13, a second regulating damper 34 is placed, by whose means the duct opening 36 which passes into the collector duct 35 for exhaust air placed behind the second lighting unit 16b and, at the same time, the duct opening 37 passing into the exhaust duct 13 are opened and closed. The arrow L^ illustrates the flow of air out of the collector duct 35 placed behind the lighting unit 16b through the opening 36 into the exhaust duct 13, and the arrow , d illustrates the flow out of the duct 33 into the exhaust duct 13. Fig. ID is a sectional view of the device shown in Fig. 1A, taken along the line πi-III in Fig. 1A The figure also shows the ceiling construction, to which the air-conditioning unit 10 in accordance with the invention is attached by means of fastenings S as surface installation. The flow of recirculation air is produced by means of the blower 20. The recirculation air enters in the way indicated by the arrow L^, into the free space T between the top face of the air-conditioning unit and the ceiling K. The air flow produced by the blower 20 passes further through the opening 14 at the top of the air-conditioning unit 10 to the filter 17 and from the filter 17 further to the heat exchanger 18 and from the heat exchanger 18 to the inlet chamber 19 and further to the other side of the partition plate 22 into the rear chamber 21 between the partition plate 22 and the bottom plate lib. From the space 21 the recirculation air is passed, being blown by the blower 20 and guided by the plate lib in a direction parallel to the ceiling K, into the discharge opening for recirculation air in the device, and out into the room space H. The fresh intake air is passed out of the duct 12 in the way shown by the arrow L, a , and it is blown into the room through the device 10 out of the discharge opening 15 placed in the side wall lla 2 of the device 10. In the embodiment shown in Fig. ID, fresh intake air and recirculati¬ on air in the room are mixed together in a chamber space placed inside the device before said flows leave the device. Fig. 2A is a schematical axonometric illustration of the system of exhaust-air ducts and of the draining of condensed water. By means of the partition plate 22 placed below the blower 20, any condensed water that may flow out of the heat exchanger 18 is made to flow by the effect of gravity to an annular intermediate storage site 25 placed underneath the blower 20, from which storage site the condensed water is passed further into the drain pipe 26. By the effect of gravity, the water flows further into the ultimate storage tank 27 for condensed water, said storage tank including an evaporator 28, advantageously an electric resistor, by whose means the water that has flown out of the drain pipe 26 into the ultimate storage tank 27 is evaporated into the exhaust air L^ that is made to flow along the duct 33. In the invention, the air flow is passed through the lighting unit into the duct where the final storage tank for condensed water is placed. Thus, along with it, the flow of exhaust air flow transfers heat from the light fitting, and said heat can be utilized further for evaporation of the conden¬ sed water. Fig. 2B is an axonometric partial illustration of the duct 29 that passes behind the lighting unit. In its side walls, the duct comprises openings 29a, through which the exhaust-air flow L^ is passed into the suction duct 29 and further through the duct 29, through the opening 31 in the duct 29, by-passing the regulating damper 30, into the duct 33 and from the duct 33 further into the outlet duct 13. The exhaust-air flow into the duct 13 is produced by means of the exhaust-air blower placed in the central apparatus of the building. In a corresponding way, the intake-air flow is produced by means of the intake-air blower in the central apparatus. The intake-air flow can also be taken through the opening 34 in the side wall ll a1 in the way shown by the arrow L^. (Out of reasons of clarity, the lamp is not shown in the figure. The flow 1^. passes while wiping along the faces of the lamp.) Fig. 2C is a sectional view taken along the line IV-IV in Fig. 2B on an enlarged scale. Fig. 3A is an axonometric partial illustration of the distribution of fresh air and recirculated air into the room space H. The intake duct 12a for fresh air ends in an inlet chamber 12b, which is connected to an oblong air-distribution beam 12c. The distribution beam 12c is provided with flow openings 12 , through which intake air is made to flow at a relatively high speed into the room space H in a direction parallel to the ceiling K of the room space. The arrows L, a illustrate the arrival of air in the duct 12a by means of a flow produced by the blower (not shown) in the central apparatus. Out of the duct 12a, the air flows into the inlet chamber 12b in the way shown by the arrow L, b and further, in the way shown by the arrow L^, the air flows out of the distribution beam 12c through its flow openings 12c,. Recirculation air L 3 is circulated by means of the blower 20 so that the plate lib placed at the bottom of the frame 11 guides the recirculation air into the outlet opening 15' placed in the side wall Hag of the frame 11, said outlet opening 15' being fitted, in the embodiment shown in the figure, to be placed above the distribution beam 12c. Advantageously the opening 15 comprises slats (not shown), by whose means the recirculation air can be directed in the desired way out of the air-conditioning unit 10. In this embodiment of the invention, when air in the rom is cooled by means of a heat exchanger 18, in a situation of cooling, e.g. in summer, the cooled air is colder than the fresh air passed through the intake duct 12a. Thus, by means of the arrangement in accordance with the invention, direct falling down of the recirculation air at the proximity of the air-conditioning unit 10 is prevented by, out of the distribution beam 14c, blowing a carrier-air jet of fresh air to under¬ neath the recirculation air in a direction parallel to the ceiling K of the room space H. Fig. 3B is a sectional view taken along the line IV-IV in Fig. 3A. Part of the exhaust air 1^ passes through the lighting unit 16b into the collector duct 35 in the hghting unit. Thus, by means of the recirculation air L, d , the lamp of the hghting unit is cooled, whereby the illuminating capacity of the hghting unit 16b is increased, and the heat generated by the hghting unit can be removed out of the room space without increasing the thermal load in the room. Fig. 4 is an axonometric view of a second advantageous embodiment of the device in accordance with the invention. In the embodiment shown in the figure, the recirculation air in the room H is circulated by means of the blower 20 so that the recirculation air enters into the device via the ceiling K and the inlet opening 14 at the top of the frame 11 of the device, and the recirculation air is removed out of the air-conditioning unit 10 in three directions through openings 15a, 15b and 15c provided in the side walls lla 2 ,lla 3 ,lla 4 , being guided by the bottom plate lib. Fig. 5A shows the hght-fitting hood and the latticework part of an equipment in accordance with the mvention placed on the ceiling, the air flow passing through said latticework part. At least one hghting unit 16 is placed inside the hght- fitting hood and preferably on the lower face of the frame box 39. The hght- fitting hood 37 may also be used in the embodiments shown in Figs. 1 to 4, provided that at least one hghting unit 16 is placed on the bottom face of the device. The equipment 10 is fitted on the ceiling K of the room space H. The hood 37 prevents spreading of the heat of the hght fitting into the room space, whereby the heat is transferred into the air to be treated, and in cooling operati¬ on the heat can be transferred out of the room space H. In heating operation, the heat of the hght fitting is utilized for heating of the room. As is shown in Fig. 5A, the equipment in accordance with the invention comp¬ rises a hght-fitting hood 37 penetrable by hght and surrounding the hghting unit 16, such as a fluorescent tube or fluorescent tubes. According to the invention, the hght-fitting hood 37 is attached to the latticework part 38, which is further attached to the ceiling K of the room space H. The hghting unit 16 is attached to the bottom face of the frame 39. The frame, which is a box construction, contains the control means, filters, heat exchanger, and air ducts. As is shown in Fig. 5A, the air flow passes in the room space H between the slats 38a and 38b and 38c in the latticework 38. The air is recirculated in the way shown by the arrow L, by means of circulation produced by the blower 20 in the equipment 10. The air is made to flow through filters and through the heat exchanger, and the air is blown further through the latticework 38 into the room space H through one end of the latticework part. Air is removed out of the room space H in the way shown by the arrow L,. Only part of the air in the room space H is recirculated in the way shown by the arrow L 3 . Fresh intake air is passed into the room space H in the way indicated by the arrow L,. The hght- fitting hood shown in Fig. 5A and the related latticework that guides the flow can also be fitted around the device units shown in Figs. 1 to 4. In such a case, at least one hghting unit 16 is placed on the bottom face of the device. Fig. 5B is a more detailed illustration of the solution of air circulation in connection with the device shown in Fig. 5A The protective hood 37 surrounds the hghting unit 16 and its fluorescent tube. The protective hood 37 is attached to the latticework part 38. The whole construction, consisting of the protective hood and of the latticework part, surrounds the rest of the equipment unit. As is shown in Fig.5B, the equipment comprises a frame 39 proper of box construc¬ tion, to which a duct part 40 for intake of fresh air and for recirculation air ^ is attached in a modular way. To the opposite side of the frame 39, a duct box 41 is attached for recirculation air 1^. and for exhaust air L,. Inside the frame 39, a filter 17, a heat exchanger 18, and a blower 20 are fitted. Recirculation air Lg is made to flow, by means of the blower 20, into the modular duct part 41 and from it further through the filter, the heat exchanger, and the blower into the duct part 40. Thus, the recirculation air passes directly through the frame 39 and through the air-treatment arrangements fitted therein. Fresh air is passed into the duct part 40, and the flow of fresh air L, is mixed with the recirculation air L 3 . The removal of the air flow out of the room space H takes place through the system of ducts 13 in the device 10 in the way shown by the arrow 1^ out of the duct part 41. The duct parts 40 and 41 are modular construction parts which can be replaced on the frame 39 and exchanged in accordance with the direction from which the connection of the ducts is carried out. Fig. 5C is an illustration of principle of a solution of equipment as shown in Fig. 5B, seen from above. The figure shows that the hght-fitting hood 37 is a circular construction and, in a corresponding way, the latticework part 38 is also a circular construction. The function of the slats 38a,38b... in the latticework part 38 is to act as members that guide the air flow. Fig. 5D shows the solution of equipment of Fig. 5A with the parts of the device taken apart from one another, and what is shown is an embodiment wherein the hght-fitting hood 37 is a pyramid-shaped plastic construction penetrable by light. As is shown in the figure, the hght-fitting hood 37 is attached to a square latticework part 38, which comprises three slats, the slats 38a,38b and 38c, on each of its four sides. As is shown in the figure, the modular detachable duct part 40 can be attached to the frame 39, and in a corresponding way the other duct part 41 can be attached to the frame 39 similarly. Thus, the duct parts 40 and 41 are exchan- geable depending on the inlet directions and on the duct-size requirements. However, it is possible to use the same frame 39. The duct part 41 comprises a duct connection 13' for the exhaust air. The duct connection 13' is opened into an air flow passage 41d. The duct part 41 comprises a number of air flow passages 41a,41b,41c,41d placed side by side, the air flow being directed out of said passages further to the filter 17. The passages 41a,41b,41c and 41d are separated from one another by means of partition walls 42. The partition walls 42 contain a noise-attenuation material 43. They are preferably made of a material 43 that attenuates noise. In a corresponding way, the other duct part 40 comprises entirely similar structural parts, air flow passages 40a, 40b,40c and 40d. The passages are separated from one another by means of partition walls 42. The partition walls 42 contain a noise-attenuation material 43. They are preferably made of a material that attenuates noise. In this way a lamellar structure has been formed which has very good noise-attenuation properties. At the side there is a duct connection 12', which opens into the passage 40d. As is shown in Fig. 5D, a filter 17, a heat exchanger 18, and a blower 20 are fitted, in the above sequence relative the direction 3 of the recirculation air flow, inside the frame 39. The equipment further comprises distribution beams for distribution of circulation fluid as well as regulation valves for regulation of the fluid circulation. The recirculation air is heated or cooled, depending on the requirement of regulation, in the heat exchanger 18. Fig. 5E shows the mounting of the hght-fitting hood 37 on the latticework part 38 by means of hinges. The latticework part comprises a vertical pin 44,45 which interconnects the slats 38a and 38b and on which the hinge 46 is fitted. There are preferably two hinges 46 at adjoining corners of the same edge. The lowest slat part 38c is thereby pivoted on the hinge 46, and thus the hght-fitting hood 37 attached to the slat part 38c can be pivoted to the open position, whereby the hghting unit 16 and the devices placed on the face of the frame 39 can be reached. Fig. 5F shows the connection of the hghting hood 37 and of the connected extreme slat part 38c with the rest of the latticework part 38 by means of a locking device 47. The locking device 47 consists of a screw 48 passing through the slat part 38c, which screw 48 can be threaded into the pin 49 that intercon¬ nects the slat parts 38a and 38b. The locking and unlocking of the parts 48,49 takes place by means of threadings 50 and 51. Fig. 5G shows the attaching of the latticework part 38 to the ceiling K by means of an angular iron 52 and a screw 53. Fig. 6 is a sectional iUustration of principle of the mounting of the plate 54 placed underneath the box for regulation devices on the frame 39 by means of hinge means 55. Thus, the plate 54 can be pivoted to the lower position, and, thus, the apparatuses inside the frame 39 are easily accessible. Before that, the hght-fitting hood 37 had been pivoted to the lower position on the hinge 46. The pivotable plate 54 at the bottom of the frame 39 comprises at least one lighting unit 16, preferably a number of fluorescent tubes placed side by side, on its face. The plate 54 is locked on the box 39 by means of a screw 56. The screw 56 passes through the plate 54 and is coupled by means of a threading with a counter-iron 57 in the box 39. In a corresponding way, the duct parts 40 and 41 comprise hghting units 16 on their lower faces. Fig. 7A shows a flow diagram in accordance with the invention related to the air-conditioning device. Fresh air is passed from the central apparatus D by means of the blower P- of the central apparatus into the air-conditioning unit 10. By means of a regulation damper S 15 the inlet of air into the device is regulated, and the air is made to flow directly into the room space H. Recirculation air L 3 is made to flow through the filter 17 and the heat exchanger 18 to the blower 20. By means of the heat exchanger 18, the recirculation air is either cooled or heated. The exhaust air L, is removed by means of the blower P 2 of the central apparatus, either through the hghting unit 16 or directly from the room space. Removal of air is also possible so that the air is removed both through the hghting unit 16 and directly from the room space H. Fig. 7B shows the diagram of circulation of the heat transfer medium in the cooling/heating arrangement. The figure shows three air-conditioning units 10. They are placed in separate room spaces, i.e. in the room spaces H,,H 2 and H 3 . Heat transfer medium, preferably heat transfer fluid, is circulated through the heat exchanger 18 in the air-conditioning unit 10 by passing the medium into the heat exchanger 18 in the way shown by the arrow T-, and by removing it from the heat exchanger 18 in the way shown by the arrow T 2 . The inlet flow T- is taken from the heating unit C, or cooling unit , of the central apparatus F, depending on whether heat is removed from the room H,,H 2 ,H 3 or whether heat is introduced into the room space through the heat exchanger. Thus, by control¬ ling the valves E.,,!^ and M^M^ heat transfer medium is circulated through the trunk ducts R,R 2 either through the heating unit C, or through the cooling unit ,. The heating and cooling units C, and , are placed in the central apparatus F.

Claims: Claims 1. Method for air-conditioning of a room, wherein the air in the room is circula¬ ted through an air-conditioning device (10), whereby said recirculation air is filtered and heat is introduced into said air or heat is removed from said air, while the circulation of the recirculation air is produced by means of a blower (20) present in the air-conditioning unit (10), and through which air-conditioning unit (10) it is possible to introduce fresh air and/or through which air-condi¬ tioning unit (10) it is possible to remove impure air out of the room (H), c h a racterized in that, in the method for air-conditioning of a room, such a device (10) for air-conditioning of a room is employed as comprises at least one hghting unit (16) on one outer face of the air-conditioning unit, whereby, in the method, impure air is removed out of the room optionally either directly out of the room space and/or through the lighting unit (16), and whereby mixing of fresh air and recirculated air is fitted to take place inside the air-conditioning unit (10) or at direct proximity of said unit, and whereby, in the method, air is made to flow between the slats (38a,38b...) in a latticework part (38) related to the hght-fitting hood (37) of the device (10) while the hght-fitting hood (37) and the related latticework (38) surround the whole of the remaining device const- ruction, the latticework part (38) operating as a member guiding the flow both of the recirculated air (L 3 ) and of the fresh air (L,) introduced into the room as well as of the exhaust air (1^) (FIG.1... FIG.6). 2. Method as claimed in claim 1, characterized in that in the method room air is removed through an exhaust duct (29 and/or 35) placed in connecti¬ on with the hghting unit (16a and/or 16b) (FIG.1... FIG.5A). 3. Method as claimed in claim lor2, characterized in that in the method recirculation air and fresh air passed into the room are made to flow substantially at the proximity of the ceihng of the room space and preferably in a direction parallel to the ceihng (FIG.1... FIG.5A). 4. Method as claimed in any of the preceding claims, characterized in that in the method fresh air is passed into the room space (H) so that the air is first made to flow out of the inlet duct (12a) into an air-distribution beam (12c), from which the air is fitted to be discharged at a relatively high speed in a direction parallel to the ceiling of the room space and in which method the recirculation air is introduced into the space between the ceiling (K) and the fresh air made to flow into the room in the way mentioned above (FIG. 1 ... FIG. 5A). 5. Method as claimed in any of the preceding claims, c h a r a c t e r i z e d in that in the method any condensed water that may have flown from the heat exchanger (18) is transferred into an ultimate storage tank (27), wherein it is evaporated into the exhaust-air flow ( , b ) (FIG. 1 ... FIG. 5A). 6. Method as claimed in the preceding claim, c h a r a c t e r i z e d in that in the method the evaporation is carried out by means of an electric resistor and/or by making use of the hghting heat contained in the exhaust air (FIG. 1 ... FIG. 5A). 7. Device (10) for air-conditioning of a room, said device unit comprising a filter (17), a heat exchanger (18), and a blower (20) for recirculated air, which blower (20) produces a flow of air through the filter (17) and the heat exchanger (18) and in which air-conditioning unit (10) the fresh air is introduced through an inlet duct (12) and impure air is removed out of the room through an exhaust duct (13), and which said air-conditioning device comprises a hghting unit (16), c h a r a c t e r i z e d in that the air-conditioning unit comprises at least one hghting unit (16a), advantageously on the lower face of the box-like frame (39) of the device, whereby, in the solution of equipment, the hght-fitting hood (37) is fitted at the proximity of the lower face of the device to surround the hghting unit (16), and that the hght-fitting hood (37) comprises a lattice-work (38) con¬ nected to its outer face and consisting of a number of slat parts (38a,38b) placed side by side, said slat parts being fitted to direct the air flow, and in which construction the hght-fitting hood (37) penetrable by hght and the latticework (38) are fitted to surround the whole of the remaining device construction (FIG. 1 ... FIG. 6). 8. Air-conditioning device (10) as claimed in any of the preceding claims, characterized in that the device includes hinge means (46) on which the hght-fitting hood (37) can be pivoted to such a position in which the devices inside the frame (39) can be reached and that the hinge (46) is fitted on a pin (45) which interconnects the slat parts (38a,38b) (FIG.5A ... FIG.6). 9. Air-conditioning device as claimed in any of the preceding claims 7 or 8, characterized in that the air-conditioning device comprises a frame (39) in whose interior a filter (17), a heat exchanger (18) and a blower (20) are mounted, and that the equipment comprises duct parts (40 and 41) attached to opposite edges of the frame, of which said duct parts recirculation air (L 3 is made to flow and room (H) air (L,) is removed through the duct part (41) and whereby, through the duct part (40), recirculation air ( ^) is made to flow into the room space (H) and fresh air (L,) is passed into the room space (H) (FIG. 5A ... FIG.6). 10. Air-conditioning device as claimed in any of the preceding claims 7 to 9, characterized in that the device comprises such duct parts (40,41) attachable to the frame (39) as can be exchanged in a modular way, whereby each duct part (40 and/or 41) can be replaced by an exchangeable duct part, in which case the frame (39) can be utilized for different duct sizes (FIG.5A ... FIG.6). 11. Air-conditioning device as claimed in any of the preceding claims, char- acterized in that, at the bottom of the frame (39), the air-conditioning device comprises a hinged plate (54) which covers the bottom portion of the frame (39) and which can pivot by means of a hinge device (55), said plate (54) comprising at least one hghting unit (16) on its lower face (FIG.5A ... FIG 6). 12. Air-conditioning device as claimed in any of the preceding claims, char¬ acterized in that, on the lower face of the duct part (40,41) attached to the frame (39), the air-conditioning device comprises at least one lighting unit (16), advantageously a fluorescent tube (FIG.5A ... FIG.6). 13. Air-conditioning device as claimed in any of the preceding claims, c h a r ¬ a c t e r i z e d in that the duct part (40) comprises air flow passages (40a, 40b ...), which are separated from one another by partition walls (42), which are advantageously made of a material (43) that attenuates noise, whereby the air flow passes through the passages (40a,40b...) into the interior of the frame (39) and further into the exchangeable duct part (41) placed at the other side of the box for regulation members, and that, at its end, the duct part (40) comprises a connection (13') for passing the exhaust air (L,) into the exhaust-air duct (13) (FIG. 5A ... FIG. 6). 14. Air-conditioning device as claimed in any of the preceding claims 7 to 12, c h a r a c t e r i z e d in that, at its end, the duct part (41) comprises a duct connection (12') for intake air (L,) for connecting the intake-air duct (12) with the duct part (41) (FIGS. 5A ... 6). 15. Device (10) for air-conditioning of a room as claimed in claim 7, said device comprising a filter (17), a heat exchanger (18), and a blower (20) for recircula¬ ted air, which blower (20) produces a flow through the filter (17) and the heat exchanger (18) and in which air-conditioning device (10) fresh air is introduced through an inlet duct (12) and impure air is removed out of the room through an exhaust-air duct (13), c h a r a c t e r i z e d in that the air-conditioning device comprises at least one hghting unit (16a and/or 16b) and therein a fluorescent tube or a lamp, and that the hghting unit (16a) is fitted to be placed on one face of the air-conditioning unit (10), and that the air-conditioning unit (10) is fitted in such a way as surface instaUation on the ceihng (K) of the room space that a space (T) remains between the air-conditioning unit (10) and the ceiling (K), through which space the recirculation air is made to flow into an opening (14) at the top of the device and further to the filter (17) and to the heat exchanger (18), whereby the air flow is fitted to pass from the device, being guided by the bottom plate (lib) of the device, into the opening (15) at the side of the device, and through said opening into the room space (H) in a direction paraUel to the ceiling (K), and said device comprising arrangements for mixing together the flows of recirculation air and of fresh intake air (FIGS. 1 ... 5A). 16. Air-conditioning device as claimed in claim 15, c h a r a c t e r i z e d in that the air-conditioning device (10) comprises a hghting unit (16a and/or 16b) in connection with which there is a collector duct (29 and/or 35) for exhaust air, at least part of the impure room air being transferred through said coUector duct into the exhaust duct (13) and further out of the device (FIGS.1...5A). 17. Air-conditioning device as claimed in any of the preceding claims 15 or 16, characterized in that the equipment comprises a collector duct (33) for exhaust air, into which said coUector duct (33) the exhaust-air ducts (29,35) placed in connection with the hghting units are opened when the exhaust-air flow through the hghting units (16a,16b) is controlled by means of controllers (30,34) (FIGS.1...5A). 18. Air-conditioning device as claimed in any of the preceding claims 15 to 17, characterized in that the evaporator of condensed water consists of an electric resistor (FIGS.1...5A). 19. Air-conditioning device as claimed in any of the preceding claims 15 to 18, characterized in that the duct (12b) for fresh intake air is opened into the distributor beam (12c) for fresh air, through which the fresh air is distributed as a carrier-air jet in a direction paraUel to the ceihng (K) of the room space (H) into the room space, whereby the equipment comprises a discharge opening (15') for recirculated air provided in connection with the distributor beam (12c), said discharge opening being fitted to be placed in the area between the distributor beam (12c) and the ceihng (K), whereby the fresh carrier air (L^) prevents direct faUing down of the recirculated air (Lg d ) right at the proximity of the air-conditioning device (FIGS.1...5A). 20. Air-conditioning device as claimed in any of the preceding claims 15 to 19, characterized in that the air-conditioning unit comprises discharge openings for recirculated air at three different sides (15a, 15b, 15c) of the device, whereby the recirculated air can be divided in three different directions in the room space (H) (FIGS.1...5A).

Inventors: HORTTANAINEN PEKKA, HORTTANAINEN, PEKKA
Applicants: HALTON OY
Application year: 1990
Main classification: F24F3
IPC codes: F21V33, F24F3