FI119126B - Supply Unit - Google Patents

Description

119126

The invention relates to a supply air device.

Supply air solutions are known in the art, in which in equipment solutions the supply air flow is conducted as a fresh supply air flow into the supply air chamber and from there through the nozzles or nozzle gap to the downstream side of the heat exchanger into the mixing chamber. The aforementioned supply air flow from the nozzles attracts the room recirculation air flow to flow through the heat exchanger. The heat exchanger can cool or heat the recirculated air flow from the room. After the mixing chamber, after the heat exchanger, the fresh supply air and the recirculated air flow are combined and the combined air flow is drained away from the unit. The purpose of this application is to find an improvement in a device solution in which the combined airflow of fresh supply air and recirculated air blown away from the supply air device flows downward in the direction of the gravitational field. The unit can be located on a wall or in the ceiling of a room, but can also be located elsewhere in the room. The problem has been that the airflow gets high velocity when exiting the unit, and therefore • • • · *: * 20 * does not provide the best possible comfort and good living conditions. Particularly, the solution emphasizes the downward tendency of the airflow to fall down, and also with the device, when blowing down the cooling nozzle · ;;; the resulting downward output speed. These add up; the flow velocity • · "* us becomes too high, causing a sense of traction in the stay zone.

This application discloses the use of a perforated plate Φ m '·' or the like after the mixing chamber to achieve a controlled airflow rate. The perforated plate is preferably interchangeable with the device or with a particular type of perforated plate structure on a particular location, such as a wall.

30 φ ·, ·. · 30 The size of the holes, i.e. the opening ratio with respect to the fixed part of the plate, can thus be selected as φ ** * as desired and likewise the shape of the holes. The holes can be circular cross-sectional holes, 2 119126 elliptical holes or rectangular cross-sectional holes. The holes can, if desired, be made by stamping into the blank. Said air vent surface perforated plate may be removably secured by means of attachment to the supply air device in the opening after its mixing chamber.

5

The perforated plate solution according to the invention is suitable for such an open supply air device solution, which herein is understood to be a device solution in which recirculated air is led from the room above the device through a heat exchanger into the mixing chamber. The venting surface of the invention comprising an opening can also be fitted to so-called closed models which understand device solutions that are side and top closed and in which the recirculated air flow is led to the heat exchanger below the fresh supply airflow into the mixing chamber through nozzle slot or nozzles. Thus, the invention is generally applicable to device solutions where a combination of fresh supply air flow and room recirculated air flow is now provided: the air flow is led directly downward from the device to the earth's gravity field g · · •. V or downwards obliquely from the device.

* · · • · • ♦ ··· • · ·

The supply air device according to the invention is characterized by what is stated in the claims.

The invention will be described with reference to certain preferred embodiments of the invention shown in the following drawings, but which are not intended to be limited thereto.

• * · • · • · • · ·: V. Figure IA shows a first preferred embodiment of the invention in a ak * *: * *: sonometric representation.

3, 119126

Figure IB is a sectional view I-I in Figure IA.

Fig. 2 illustrates an embodiment corresponding to the embodiment of Figs. 1A and 1B, but the arrangement of Fig. 2 comprises a nozzle slot instead of nozzles.

Figures 3A and 3B illustrate an embodiment of the invention which otherwise corresponds to the embodiment of Figures IA and IB, but in which the air flow is led to two sides of the vertical axis of the device from the supply air chamber.

10

Figure 3B is a section ΙΙ-Π of Figure 3A.

Figure 4 otherwise shows an embodiment corresponding to the embodiment of Figure 3A and 3B, but in the solution of Figure 4 the supply air chamber comprises a nozzle slot on both sides.

Figure 5A shows a perforated plate at the outlet of the mixing chamber.

• · · · · Figure 5B shows the device of Figure 5A, the direction of the arrow K in Figure 5A.

: 20 ··· · • ·: .V Figure 6A is an axonometric representation of an embodiment of a device solution according to the invention in which air Li is led from above the supply air chamber from below the heat exchanger to · · · ... I down.

Fig. 6B is a sectional view ΠΙ - ΠΙ of Fig. 6A and the representation is axonometric.

• * • · »** * *. ί. * Figure 6C shows the equipment of Figure 6B, the direction of the arrow K2.

• · • · • · ··· '. Fig. 7 illustrates an embodiment of the invention which otherwise corresponds to the embodiment of Figures "*" 6A, 6B and 6C, but in which the recirculated airflow 4 119126 L / 2 from room H is led to a heat exchanger 13 from the side and top of the device.

Fig. 8 illustrates an embodiment of Figs. 6A, 6B, 6C and 7, in which nozzles 12ai, 12a2 are replaced by a nozzle slot 12. Otherwise, the solution of Fig. 7 corresponds to that of Figs. 6A, 6B, 6C and 7.

Figures 1A and 1B illustrate a first preferred embodiment of the invention. Figure IB is a section I-1 in Figure IA. Figure IA is an axonometric representation. The supply air device 10 comprises an supply air chamber 11 and therein nozzles 12ai, 12a2 ... or a nozzle slot 12 (Fig. 2). The supply air device 10 according to the invention comprises a heat exchanger 13. In a device solution, a fresh supply air stream L1, derived from the supply air chamber 11, its nozzle slot 12 or nozzles 12ai, 12a2 ... is led to a mixing chamber 14, thereby inducing recirculation airflow L2 from room H through a heat exchanger 13. The fresh air flow into the supply air chamber 11 comes from the piping P. With the heat exchanger 13, the recirculated air L2 can be either cooled or heated. Thus, the room airflow L2 can be either heated or cooled by the heat exchanger 13. The fresh supply air flow Li from the supply air • · I chamber 11 induces recirculated air flow L2 to flow into the heat exchanger • ·!:! 20 and through the mixing chamber 14 after the heat exchanger 13, the air flows • • · Φ * · *. The L1 and L2 are mixed and the combined air flow L1 + L2 according to the invention is led to an air discharge surface 15 covering the outlet D of the mixing chamber 14, which comprises an opening at, a2 ... Preferably is a perforated plate 15 as an air discharge surface. In Figures 1A, 1B, the direction of the earth's gravity is shown by letter g and the device is fixed as shown in the figure to the room wall W. Using a perforated plate agitator the opening provides a controlled low velocity for the airflow and • · • * "* avoids the draft feeling in Room H in the occupied zone.

Fig. 2 otherwise shows a solution similar to Figs. 1A and 1B, but in the embodiment of Fig. 1b, ί, ί 30, a nozzle slot is used instead of nozzles 12ai, 12a2 ... 12. Thus, fresh air and air flow Li is directed from the nozzle opening 12 downwardly for a further 5 119 126 a heat exchanger 13 delivery side, where it induces the circulated air flow heat exchanger L2 through 13 to the mixing chamber 14. the air purkupintana 15 is läpiaukotuksen al, a2 ... comprising a perforated plate of the mixing chamber 14 of the downstream mouth of the D. airflow Li + L2 is down from the device.

5

Figures 3A and 3B illustrate an embodiment of the invention which otherwise corresponds to that of Figures IA and IB, but in the solution the air flow is directed to two sides of the vertical axis Y of the device from the supply air chamber 11. The device solution is symmetric with respect to vertical axis Y. The air is thus flowed downwardly from the air chamber 11 on the two sides of the device, and the mixing chambers 14 comprise an air discharge surface 15 with an opening a1, a2 ... in their outlet D, and the air discharge surface preferably comprises a hole plate and openings a1, a2 ... made with, for example, punched or cut holes Their shape can be a circle, an ellipse, etc. The airflow Lt + L2 is down-15 from the device.

Figure 4 otherwise shows an embodiment similar to that of Figures 3A and 3B, but in the solution the supply air chamber comprises a nozzle slot 12 on each side instead of separate nozzles • ·:, · ·. The layout of the pattern • ·: · 1 20 is hung on the ceiling of room H. Without mixing surface 15 mixing chambers • · •. The mouth of the V mion 14 has a hole plate.

* · · • · • · ··· * · ·

Figure 5A is a perforated plate 15 of the mixing chamber 14 of the outlet connection D * ♦ • · · · · shown in * 1 · conjunction mixing chamber 14 at the entrance to the outlet side of D.

Figure 5B is a direction k2 of Figure 5A. The air discharge surface 15, such as the perforated plate, is • · • · * "removably attachable with fastening means R1, R2 ... such as screws to cover *.!. · Opening D.

· · • • • • • 6 · 119126

Fig. 6A is an axonometric view of an embodiment of an apparatus solution according to the invention in which the air Li is led from above the supply air chamber from below the heat exchanger first to the side and thus downwards.

Fig. 6B is a sectional view III-III of Fig. 6A and is a perspective view.

Figure 6C shows the equipment of Figure 6B, the direction of the arrow KA.

6A, 6B and 6C illustrate an embodiment of the invention wherein the air flow is led from room H through the aperture m, n2 ... of the device housing to the heat exchanger 13 and further without air from the supply air chamber 11, nozzles 12ai, 12a2 ... or nozzle slot 12 airflow L1 induced by heat exchanger 13 to arcuate air control surface 100 which deflects the airflow downwards so that the combined airflow L1 + L2 flows directly downward from the supply air device 10 and additionally has another airflow L1 + L2 flowing obliquely from the vertical downstream gate 10.

The exchanger air L2 can be either cooled or heated by the heat exchanger 13.

t · ·, · j 20 The discharge surface 15 is a perforated plate which is part of the casing body and one structure of the device, · · •, V with the supply air unit body structure or casing body.

Fig. 7 shows an embodiment of the invention which otherwise corresponds to the embodiment of Figs. 6A, 6B and 6C, but in which embodiment the recirculated air flow 25 is shown. The L2 from the room space is led from the side and from the top to the heat exchanger 13. Without the discharge surface 15, the exhaust surface 15 comprises a discharge surface 15 from which air flows downwards and another air outlet 15 through which the air flows obliquely downwards. The discharge surfaces 15 may have the same openings a1, a2 ... or the same with respect to one another. Thus, the air stream L1 + L2 is now flowing downwardly as in the previous embodiment: V: 30 and additionally through another side surface obliquely downward to the vertical plane g. ** In the embodiment of Figure 7, the air flow is thus supplied to the supply air device 7 119126. through the opening aperture ji, j2 · · · inside the supply air device 10 and further to the heat exchanger 13 and through the opening ni, Π2, n3, .. to the supply air device 10 to the heat exchanger 13.

Figure 8 illustrates another nozzle structure associated with the embodiment of Figures 6A, 6B, 6C, and 7 associated with an inlet air chamber, wherein, instead of individual nozzles 12ai, 12a2 ..., there is a single nozzle slot 12 from which air Li discharges into mixing chamber 14.

10 • · • · 1 # · · *** · · · · · · · · · · · · · · · · · · · · · · · · · · · ················································································································································ · · · · · · ·

Claims (3)

A supply air device (10) comprising an supply air chamber (13) and a nozzle slot (12) or nozzles (12ai, 12a2 · ..) therein and the supply air device (10) comprising at least one heat exchanger (13) for either cooling or heating the recirculated air flow (L2) from the room (H) and that in the device solution the air flow (Li) derived from the supply air chamber (11), its nozzle slot (12) or nozzles (12ai, 12a2 ...) induces recirculated air flow (L2) from the room flowing through the heat exchanger (13), combining fresh supply air flow (Li) from the supply air chamber (11) with the recirculating air flow (L2) from the heat exchanger (13) in the mixing chamber (14), with the combined air flow (L (+ L2)) obliquely downwards from the supply air device to the room (H), characterized in that, after the mixing chamber (14), there is in the flow direction an air discharge surface (15) comprising an opening (a1, a2 ...) and the organ surface (15) being of the same structure as that of the supply air device (10). Supply air device (10) according to claim 1, characterized in that the air discharge surface (15) is a perforated plate. Supply air device (10) according to claim 1 or 2, characterized in that: V: the device comprises a discharge surface (15) from which the air flows downwards and a second air discharge surface (15). ), through which the air flows downwards obliquely. * 1 · • »» 1 1 * • • • • 1 1 * · • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 1 I · 1 • • • • • • • • • · ··· • · · · · · · 9 119126 1. Inloppsluflanordning (10), omfattar en inloppsluftkammare (13) och pädenna en munstycksspalt (12) eller munstycken (12ai, 12a2 ...) och vilken inlopps-5 luflanordning (10) omfattar ätminstone en colormaker (13) hjälp av vilken en frän et rum (H) ledd circulationsluftströmning (L2) antingen avkyls eller upp-Värms och att iordningslösningen en frän inloppsluftkammaren (11), genom dess munstycksspalt (12) eller munstycken (12aid), 12jm (Li) inducerar strömningen (L2) av circulationsluft frän rummet (H) att strömma ge-10 nom coloringxlaren (13), colors den frän inloppsluftkammaren (11) ledda strömningen (Li) av frisk inloppsluft förenar sig i en blandningsk den frän coloringxlaren (13) kommande strömningen (L2) av cirkulationsluft fränumum, lvid den Förenade luftströmningen (L1 + L2) enriched the eller snett ned-ät i rummet (H) frän inloppsluftanordningen, lännetecknadömär yta (15), som uppvisar en perforering (ai, a2 ...), and after the bland-ningskammaren (14) i strömningsriktningen och att luftutströmningsytan (15), and the construction of the inoppsluftanordningen (10). • Ψ · · • 20 20 20 20 20 20 20 2. Inloppsluflanordning (10) enligt patentkravet 1, kännetecknad därav, att luft- ··· ·: V: utströmningsytan (15) utgörs av en hälförsedd skiva. ··· • · · · ··· ..1 · 1 3. Inloppsluflanordning (10) enligt patentkravet 1 eller 2, kännetecknad därav, • · att anordningen omfattar en utströmningsyta (15), genomic hifien biking att 25 strömma nedät och en andra luftutströmningsyta (15), genom vilken luflen. att strömma snett them. ·· • • • * * * 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1