A method and device for ventilating and temperature controlling rooms

Abstract

The invention relates to a method for ventilating and temperature controlling rooms according to the principle of dilution ventilation, wherein a primary air flow (40) is introduced into the ceiling cavity (30) of a room (4), which is partitioned from a story ceiling (26) by a false ceiling (31) and is introduced into the room (4) by means of porosities (41, 42, 43) in the false ceiling (31), wherein the primary air flow (40) in the ceiling cavity (30) produces a secondary air flow (33) as an induction air flow, which vacuums a room air flow (32) from the room (4) into the ceiling cavity (30), mixes with the secondary air flow (33) and introduces it into the room (4) as a tertiary air flow (34) through the porosities (41, 42, 43) in the false ceiling (31).

Claims

1. A method for ventilating and temperature controlling rooms according to the principle of dilution ventilation, wherein the thermal capacity of a story ceiling being covered by a false ceiling (31) in the ceiling cavity is thereby utilized, that the false ceiling (31) covers the entire story ceiling (29) and that thereby a ventilation separation is created between the story ceiling (29) and a room (4) to be temperate controlled, wherein a primary air flow (40) is introduced into the ceiling cavity (30) of a room (4), which is partitioned from a story ceiling (26) by the false ceiling (31) and is introduced into the room (4) by means of air inlets (41, 42, 43) in the false ceiling (31), wherein the primary air flow (40) in the ceiling cavity (30) produces a secondary air flow (33) as an induction air flow, which vacuums a room air flow (32) from the room (4) into the ceiling cavity (30), mixes with the secondary air flow (33) and introduces it into the room (4) as a tertiary air flow (34) through the air inlets (41, 42, 43) in the false ceiling (31).

2. A method according to claim 1, characterized in that the primary air flow (40) is directed as an induction air flow targetedly against the air inlets (41, 42, 43) in the false ceiling (31) and produces the secondary air flow (33) vacuuming the room air (32).

3. A method according to claim 1, characterized in that the thermal capacity and cooling capacity of the false ceiling are utilized.

4. A method according to claim 1, characterized in that during the night-time operation the temperature controlling registry used for cooling the false ceiling also simultaneously cools the underside of the story ceiling, and recharges with a certain cooling quantity, which is reemitted during the day-time operation.

5. A method according to claim 1, characterized in that the heat output or heat absorption of the story ceiling is amendable to the room by regulating the primary air volume.

6. A device for ventilating and temperature controlling rooms according to the principle of dilution ventilation, wherein the thermal capacity of a story ceiling being covered by a false ceiling (31) in the ceiling cavity can be utilized, that the false ceiling (31) covers the entire story ceiling (29) and that thereby a ventilation separation is created between the story ceiling (29) and a room (4) to be temperate controlled, wherein a primary air flow (40) can be introduced into the ceiling cavity (30) of a room (4), which is partitioned from a story ceiling (26) by a false ceiling (31) and is introduced into the room (4) by means of air inlets (41, 42, 43) in the false ceiling (31), wherein at least one nozzle duct (25) conducting a primary air flow (40) is arranged in the ceiling cavity (31), which feeds a primary air flow (40) directed targetedly against the air inlets (41, 42, 43) on the false ceiling side through primary air nozzles (36) being arranged on the underside.

7. A device according to claim 6, characterized in that the primary air flow in the ceiling cavity (30) produces a secondary air flow (33) as an induction air flow, which vacuums a room air flow (32) from the room (4) through porosities into the false ceiling (31) into the ceiling cavity (30), mixes with the secondary air flow (33) and introduces it into the room (4) through porosities (41, 42, 43) in the false ceiling (31).

8. A device according to claim 6, characterized in that at least some of the air inlets in the false ceiling (31) are formed as diffusors (43).

9. A device according to claim 8, characterized in that the diffusor (43) consists of a conical section being arranged on the inlet side, which passes into a cylindrical section being arranged on the outlet side.

10. A device according to claim 6, characterized in that the primary air as a free jet in the form of a pointed core zone (37) with high speed flows from the primary air nozzles (36) of the nozzle duct (25), and is directed flushly to the air inlets (41) being positioned on the false ceiling side.

11. A device according to claim 6, characterized in that the false ceiling (31) and/or the story ceiling (29) is/are temperature controlled.

12. A device according to claim 6, characterized in that the air-carrying porosities in the false ceiling (31), through which the room air flow (32) is sucked into the ceiling cavity (30), are formed as distance joints (10) between ceiling panels (8, 9) of the false ceiling.

13. A device according to claim 6, characterized in that additional temperature control registers are arranged in the story ceiling.

14. A device according to claim 6, characterized in that the air guide elements are arranged in a ceiling cavity (30), which is formed by a false ceiling (31) being installed in the room and completely downwardly covering the story ceiling.

15. A device according to claim 6, characterized in that at least the underside (26a) of the story ceiling (26) or the entire story ceiling (26) itself or even all surrounding surfaces, which define the ceiling cavity (30) work as thermal exchange surfaces.

Description

[0065] In the drawings:

[0066] FIG. 1: shows an aerial view of the room side on a first embodiment of a false ceiling

[0067] FIG. 2: shows the same representation as FIG. 1 with visualization of additional ventilation details

[0068] FIG. 3: shows the bottom view of a room according to FIGS. 1 and 2

[0069] FIG. 4: shows in a schematic sectional view and greatly enlarged the admixture of a primary air flow in the ceiling cavity with a secondary air flow

[0070] FIG. 5: shows the aerial view of the arrangement as per FIG. 4 with only the representation of the primary air nozzles in comparison to the supply air slits being positioned on the false ceiling side

[0071] FIG. 6: shows a perspective representation of the air routing as per FIGS. 1 to 5 in a first exemplary embodiment

[0072] FIG. 7: shows a perspective representation with a view of a false ceiling with the arrangement of differently formed air inlets

[0073] FIG. 7a: shows differently formed air inlets in comparison to FIG. 7

[0074] FIG. 7b: shows a modified exemplary embodiment in comparison to FIG. 7a

[0075] FIG. 7c: shows a modification in comparison to FIGS. 7a and 7b

[0076] FIG. 7d: shows a further embodiment of the supply of room air on the upper side of the false ceiling

[0077] FIG. 7e: shows further exemplary embodiments for the supply of room air in the ceiling cavity of the false ceiling

[0078] FIG. 8: shows a sectional view of an exemplary embodiment modified in comparison to FIG. 3 with the temperature controlling of a story ceiling

[0079] FIG. 9: shows an aerial view of the arrangement of the false ceiling as per FIG. 8

[0080] FIG. 10: shows an exemplary embodiment modified in comparison to FIG. 8, in which the false ceiling is additionally temperature controlled

[0081] FIG. 11: shows the aerial view of the arrangement as per FIG. 10

[0082] In FIG. 1, a room to be generally temperature controlled and ventilated is shown, wherein such rooms may be, for example, administrative buildings, offices, rooms of a shopping mall, residential premises, multi-purpose rooms, sports rooms, meeting rooms or conference rooms.

[0083] It is only schematically shown that such a room is defined by a corridor 1, which comprises separating corridor walls 2, which are penetrated by door elements 3. The door elements 3 each lead into a room 4, which should be temperature controlled orgenerallycooled and heated as per the invention.

[0084] The room is defined by lateral partition walls 5, which end in faade columns 7 on the facade side. Windows 6 are arranged between the faade columns 7.

[0085] The ceiling side of the room 4 is formed by a false ceiling 31, which is formed from a plurality of closely abutting ceiling panels 8, 9.

[0086] The ceiling panels 8 are formed rectangularly in the illustrated exemplary embodiment and have, for example, a size of 0.6 m1.70 m.

[0087] The ceiling panels 8 are not necessarily rectangular. They can take any form. They can be oval, round, trapezoidal, triangular, or profiled in another way. It is important that, in a preferred exemplary embodiment of the invention in question, two different types of ceiling panels are used, namely ceiling panels 9, which are not provided with a longitudinal slit, and further ceiling panels 8 comprising a longitudinal slit, which shall be subsequently referred to as supply air slit 42.

[0088] In the illustrated exemplary embodiment, the longitudinally abutting ceiling panels 8, 9 comprise open distance joints 10, which extend preferably over the entire length of the abutting ceiling panels 8, 9 and have a width of, for example, 5 mm.

[0089] The distance joints 10 are permeable to air and open into the room. The abutting transverse joints of the ceiling panels 8, 9 are impermeable to air in the illustrated exemplary embodiment.

[0090] According to FIG. 2, an air distributor system 12 opens into the room, which consists substantially of a main duct 15 extending on the corridor side, which produces an air flow 14 in outlet pipes 13 branching from this.

[0091] The air flow 14 is initially fed into a volume flow controller 16, at whose output a silencer 17 is arranged feeding into a supply duct 18, which feeds the such conditioned primary air flow in the direction of the arrow 19 in one or a plurality of distributor pipes 20 leading into the room.

[0092] In the exemplary embodiment, only one distributor pipe 20 feeding into the room 4 is shown. The invention is not limited to this. A plurality of parallelly arranged distributor pipes can also be arranged.

[0093] In the exemplary embodiment shown, the distributor pipe 20 is air-tightly connected with one or a plurality of transverse pipes 22, wherein the one or a plurality of transverse pipes 22 is connected with one or a plurality of distributor pipes 21.

[0094] The type of air distribution into the room 4 is thus represented arbitrarily and can be modified in many ways.

[0095] The primary air being supplied into the room in the direction of the arrow 19 via the distributor pipes 20, 21 divides the air flow 40 into a plurality of nozzle ducts branching vertically or at least at an angle from the distributor pipes 20, 21 and connecting air-tightly via connecting branches 23 with the distribution pipes 20, 21.

[0096] The nozzle ducts 25 have a structurally identical construction. However, because they are located locally at different points in the room 4, they are labelled 25a, 25b, 25c, 25d.

[0097] In the illustrated exemplary embodiment, for example, the nozzle duct 25d being located on the window side ends parallel to the window 6.

[0098] FIG. 3 shows the sectional representation of the structure according to FIGS. 1 and 2. It can be seen that the air distribution system 12 is arranged in the corridor suspended ceiling 24 in corridor 1, and the air routing elements are arranged in a ceiling cavity 30, which is formed by a false ceiling 31 being installed in the room and completely covering the story ceiling to the bottom.

[0099] In the area of the ceiling cavity 30, the mixing of the primary air flow 40 occurs with a secondary air flow 33 being sucked into the ceiling cavity 30 from the room air flow 32.

[0100] An induction air flow is thereby generated, which is shown as primary air in FIG. 3 with the reference numeral 40, which enters the room through allocated air inlets 41 being arranged in the false ceiling 31, wherein the speed profile of the tertiary air flow 34 being fed into the room is also shown in FIG. 3. It can be seen that the speed profile of the tertiary air flow 34 decreases greatly at a distance from the air inlets 41 being located on the false ceiling side. The air inlets 41 being located on the false ceiling side are designed preferably as slit openings, wherein the air speed initially arising in the air inlet 41 of two meters per second decreases to about 0.15 meters per second at a distance from this air inlet 41.

[0101] This produces the evidence that a low-turbulence, relatively draft-free room air is produced in the form of a ventilation and temperature controlling with a tertiary air flow 34. The tertiary air flow 34 consists of a temperature controlled primary air flow 40 and a secondary air flow 33 being extracted from the room air flow 32.

[0102] In FIG. 3, it can be seen that the room air flow 32 is sucked through porosities in the false ceiling 31 into the ceiling cavity 30 and is admixed to the primary air flow 40 here as secondary air flow 33.

[0103] Such porosities are, for exampleas mentioned in the general part of the descriptionthe distance joints 10 between the ceiling panels 8, 9.

[0104] In the exemplary embodiment according to FIG. 4, the admixture of a secondary air flow 33 to the primary air flow 40 and the resulting production of a tertiary air flow 34 is shown schematically.

[0105] Starting from the nozzle duct 25, a number of primary air nozzles 36 arranged at intervals to each other are arranged on the floor side of the nozzle duct, which are formed as round nozzle openings with a diameter, for example, of 1 mm.

[0106] The invention is not limited to this. Instead of round profiled primary air nozzles 36, rectangular, triangular or otherwise profiled primary air nozzle cross sections can also be used.

[0107] It is important that the primary air flow supplied from the primary air in the direction of the arrow 51 into the nozzle duct 25 has, for example, a temperature in the range of 10 C. to 12 C., and is thus cooled or at least temperature controlled.

[0108] The primary air flow emitted via the primary air nozzles 36 is radiated in a downwardly vertically directed, pointed core zone 37 in the direction of the upper side of the false ceiling 31.

[0109] The wave forms in FIG. 4 show the speed profile of the mixing air flow, which is formed from the primary air flow 40 with the secondary air flow 33 sucked into the ceiling cavity 30.

[0110] An air vacuum effect occurs through the forced blowing out of the primary air from the primary air nozzles 36 and through the direction of the primary air flow 40 against the air inlets 41 being arranged in the false ceiling 31.

[0111] In a preferred embodiment, the air inlets 41 are formed as air diffusers. The conically tapering profile 44 of the air inlets 41 being formed as air diffusors is formed by a first, approximately horizontal leg 45, which passes at an angle into an adjoining, diagonally directed leg 46, which in turn passes into a vertical leg 47.

[0112] A conically tapering profile of the diffuser 43 is thereby formed, which narrows from the inlet opening in the direction of the outlet opening. This results in a vacuum effect for the room air flow 32, which is sucked through porosities in the false ceiling 31 into the ceiling cavity 30.

[0113] The room air flow 32 is thereby sucked into the ceiling cavity 30 and is admixed to the primary air flow 40 as secondary air flow 33 in the area of a mixing zone 38.

[0114] The mixing zone 38 is designed preferably in a conically widening form and is formed by two mutually angularly arranged lines 39, wherein the lines 39 should meet approximately on the inclined legs 46 of the air inlets 41 being formed as diffusers 43.

[0115] An optimal vacuum effect of the secondary air flow 33 and an admixture in the primary air flow 40 in the area of the mixing zone 38 thereby occurs.

[0116] Instead of the embodiment of air inlets 41 in the false ceiling 31 as diffusers 43, other cross-sectional shapes are also provided.

[0117] The diffuser 43 is not a nozzle, since a reduction of the air speed occurs and the air should flow as uniformly as possible and low-turbulence into the room 4. Accordingly, the mixing ventilation is virtually free from turbulence.

[0118] Instead of the conically tapering shape of the diffuser shown here, other forms are also conceivable.

[0119] The cross-section of the diffuser 43 can also be designed purely cylindrically, and the diffuser 43 in the illustrated exemplary embodiment is formed with the profile 45 as a slit opening, as shown.

[0120] Instead of a slit opening, other diffusor lengths and cross sections can also be chosenas explained later.

[0121] FIG. 5 shows the size ratio of the nozzle cross-sections of the primary air nozzles 36 compared to the cross-section of the supply air slits 42, which are formed as diffusers 43.

[0122] A size ratio of about 1:100 is used here. It is furthermore clear that there is no nozzle-like effect in the diffuser 43 (supply air slit 42).

[0123] Furthermore, FIG. 5 shows that air-impermeable disconnection parts 49 exist piecewise between the supply air slits 42, through which no air flows.

[0124] FIG. 6 schematically shows the arrangement according to FIGS. 4 and 5 in a perspective representation. Here it can be seen that, starting from the distributor pipe 20, 21, the primary air is introduced in the direction of the arrow 19 in the nozzle duct 25 running parallel to the longitudinal direction of the ceiling panels 8, 9, and flows along there in the direction of the arrow 51 and flows out here from the primary air nozzles 36 arranged on the bottom side of the nozzle duct 25. This occurs in the form of the primary air flow 40, which has the speed profile 35 according to FIG. 4.

[0125] The primary air flow 40 forms a mixing zone 38, into which the secondary air flow 33 is sucked. The secondary air flow 33 originates from the room air flow 36, which is vacuumed through the porosities, for example the distance joints 10 in FIG. 6.

[0126] The transverse joints 11 are air-impermeable in the illustrated exemplary embodiment.

[0127] However, in another, not shown exemplary embodiment, it can also be provided that the longitudinally extending distance joints 10 are air-impermeable and the transverse joints 11 are air-permeable.

[0128] Furthermore, it can be seen from FIG. 6 that the room air is vacuumed through the air inlets 41 interrupting the false ceiling 31, wherein the air inlets are formed as supply air slits 42 in the illustrated exemplary embodiment. They have air-impermeable disconnection parts 49, which are material sealed to preserve the ceiling panels 8 in their integrity and flexural strength.

[0129] The distance 58 between the nozzle duct 25 and the parallel supply air slit 42 can be modified within wide limits. In this way, the supply air slit 42 penetrating the false ceiling 31 can extend the width of the ceiling panel 8 in the center or a one third or two thirds.

[0130] In any case, it is important that the nozzle duct 25 is located (lushly over the supply air slits 42 arranged in the false ceiling 31, as FIG. 4 shows, in order to achieve a centric and targeted air radiation of the primary air flow in the direction of the air diffusor 43 in the false ceiling, in order to achieve the mixing of a secondary air flow 33 to the primary air flow 40 in the ceiling cavity 30.

[0131] FIG. 7 shows as a modification that not only the supply air slits 42 can be present in the false ceiling 41. Instead of this, air inlets 41a deviating from the slit shape can also be arranged instead of the supply air slits 42, which are oval or round in the illustrated exemplary embodiment and are spaced apart from each other.

[0132] The primary air flow 40 is directed targetedly into the air inlets 41, 41a.

[0133] The air inlets 41, 41a do not have to just be laid parallel in a line to the lateral boundaries of the respective ceiling panel 8, 9. They can also be directed lengthways to an alignment line 52, 52a, 52b, which extends anti-parallel to the longitudinal side of the respective ceiling panel 8, 9. The alignment lines 52 can also form a certain alignment angle 53 to each other.

[0134] The exemplary embodiment shows that the room air 32 is vacuumed to the open distance joints 10.

[0135] The invention is not limited to this.

[0136] FIG. 7d also shows that the room air 32 can be vacuumed to thethen opentransverse joints 11.

[0137] FIG. 7a shows that, instead of the round or oval air inlets 41, 41a, rectangular air inlets 41b can also be provided.

[0138] FIG. 7b shows that he air inlets 41c can also be triangular or otherwise profiled.

[0139] FIG. 7c shows that any profiled air inlets 41, 41a, 41b, 41c, 41d can also proceed lengthways to an arched alignment line 52c, with the proviso (for all exemplary embodiments) that the nozzle duct 25 also follows this alignment line 52c and is aligned flushly opposite.

[0140] FIG. 7e shows different embodiments, as room air from the room air flow 32 can be sucked into the ceiling cavity 30 on the upper side of the ceiling panels 8. In the left part of FIG. 7e, it is shown that the room air is vacuumed through air-tightly open transverse joints 11 between the ceiling panels 8, 9. Furthermore, it is shown that the air inlets 41 are formed as supply air slits 42.

[0141] The middle part of FIG. 7e shows that the ceiling panels 8, 9 can also be completely impermeably connected to each other, and absolutely no air-tight opening is present, with the exception of the ceiling panels 59 penetrating the ceiling panels 8, 9, which can be profiled in any desired manner and through which the room air is sucked as a room air flow 32b.

[0142] Furthermore, it can be deduced from FIG. 7efrom the left representationthat the ceiling panels 8, 9 can be completely air-tightly connected together both longitudinally and transversely, and only an air space is provided on the connection side 61 on the room side.

[0143] The wall connection side 61 can be air-open, and the room air 32 can only vacuumed to the wall connection sides of the entire false ceiling 31.

[0144] The air-permeable wall connection side 61 can either be provided on the narrow side or on the wide side of the false ceiling 31, or the air-tight opening of the false ceiling can be provided peripherally on all wall connection sides 61.

[0145] Such air-open wall connection sides 61 are shown, for example, in FIG. 1.

[0146] FIG. 8 shows an exemplary embodiment modified in comparison to FIGS. 1 to 7, which only differs from the aforementioned exemplary embodiments by the temperature controlling in the story ceiling 26. With this concrete core temperature control, tempering pipes 54 are laid in the story ceiling 26, which provide cooling or heating of the story ceiling 26.

[0147] Thus there is the advantage that, for example in night hours, if the room 4 is not occupied, the story ceiling 26 can be temperature controlled using the tempering pipes 54, and the mixed air flow produced in the ceiling cavity 30 additionally flows along to the underside of the story ceiling 26, is temperature controlled there, mixes as the mixed air flow (secondary air flow 33) with the room air, is admixed to the primary air flow 40 and flows as a tertiary air flow 34 into the room with the speed profile illustrated in FIG. 8.

[0148] The advantage of this measure is that during the night hours the story ceiling 26 is temperature controlled and the temperature controlling is no longer necessary during daytime operation.

[0149] Another advantage is that the temperature control circuit 56 is formed controllably with the main pipes 55, such that any temperature controlling of the story ceiling 26 can take place during the day or night.

[0150] FIG. 9 shows the aerial view of the arrangement according to FIG. 8, where it can be seen that a plurality of tempering pipes 54 are arranged in the story ceiling 26, and the surface of the tempering pipes 54 extends over the entire surface of the room.

[0151] FIG. 10 shows as a further modification to FIG. 8 that instead of the temperature controlling of the story ceiling 26, a temperature controlling of the false ceiling 31 takes place, on which or in which a number of temperature controlling registries 57 is laid, such that the false ceiling 31 can be optionally cooled or heated.

[0152] This is carried out by an adjustable temperature control circuit.

[0153] An advantage of the arrangement according to FIG. 10 is that concrete core temperature control with a temperature controlling installed into the story ceiling 26 can be avoided, because by temperature controlling the false ceiling 31 an underside layer 26a (underside or room side) of the solidly constructed story ceiling 26 is additionally temperature controlled and assumes a different temperature to the upper side of the false ceiling, for example.

[0154] The underside 26a of the story ceiling 26 is thereby also used for temperature controlling the ceiling cavity 30, such that the secondary air flow 33 originating from the room air flow 32 is lead to the additionally temperature controlled underside 26a of the story ceiling 26, further cooled or heated there, and then admixed as a secondary air flow 33 to the primary air flow 40 and reintroduced into the room as a tertiary air flow 34.

[0155] FIG. 11 shows the embodiment of the arrangement according to FIG. 10, where it is apparent that the temperature controlling registries 57 only occupy a part of the room surface, for example only 40% of the bottom surface of the room 4.

[0156] An advantage to the method as per the invention and the device working with the method is that a draft-free and turbulence-free temperature controlling of rooms can take place with significantly lower tempering expense, because the actual mixing procedures between a primary air flow and a secondary air flow take place in the ceiling cavity 30 separated from the room above a false ceiling 31.

[0157] All rooms can thereby be regulated independently depending on the load, because the variable volume flow of the primary air flow is the dominating tempering factor, which can be simply defined by regulating the volume flow controller.

[0158] Higher cooling capacities result thereby because large exchange surfaces are provided, since at least the underside 26a of the story ceiling 26 or the entire story ceiling 26 itself or even all surrounding surfaces, which define the ceiling cavity 30, are used as heat exchange surfaces. This was not the case in the prior art.

[0159] For simpler description, the parts provided with reference numerals are not additionally labelled with their lower case letters a, b, c, d in the following patent claims, although the so labelled parts are also included in the scope of protection of the patent claims.

DRAWING LEGEND

[0160] 1 Corridor

[0161] 2 Separating corridor wall

[0162] 3 Door element

[0163] 4 Room

[0164] 5 Partition walls

[0165] 6 Window

[0166] 7 Facade supports

[0167] 8 Ceiling panel (longitudinal slit)

[0168] 9 Ceiling panel (without slit)

[0169] 10 Distance joint (open)

[0170] 11 Transverse joint

[0171] 12 Air distribution system

[0172] 13 Outlet pipe

[0173] 14 Direction of arrow

[0174] 15 Main duct

[0175] 16 Volume flow controller

[0176] 17 Silencer

[0177] 18 Supply duct

[0178] 19 Direction of arrow

[0179] 20 Distributor pipe

[0180] 21 Distributor pipe

[0181] 22 Transverse pipe

[0182] 23 Connecting support

[0183] 24 Corridor suspended ceiling

[0184] 25 Nozzle duct 25a, b, c, d

[0185] 26 Story ceiling 26a Underside

[0186] 27 Room floor

[0187] 28 Cavity

[0188] 29 Story ceiling

[0189] 30 Ceiling cavity

[0190] 31 False ceiling

[0191] 32 Room air flow 32b

[0192] 33 Secondary air flow

[0193] 34 Tertiary air flow

[0194] 35 Speed profile a, b, c

[0195] 36 Primary air nozzles (in 25)

[0196] 37 Core zone (of 40)

[0197] 38 Mixing zone

[0198] 39 Line

[0199] 40 Primary air flow

[0200] 41 Air inlet

[0201] 42 Supply air slit

[0202] 43 Diffusor

[0203] 44 Profile

[0204] 45 Leg

[0205] 46 Leg

[0206] 47 Leg

[0207] 48 Angle (of 39)

[0208] 49 Disconnection part

[0209] 50

[0210] 51 Direction of arrow

[0211] 52 Alignment line a, b, c

[0212] 53 Alignment angle

[0213] 54 Tempering pipe

[0214] 55 Main pipe

[0215] 56 Temperature control circuit

[0216] 57 Temperature controlling registry

[0217] 58 Interval

[0218] 59 Ceiling panel opening

[0219] 60 Tempering air flow (of 33) 60a

[0220] 61 Wall connection side