FI119127B - Supply Unit - Google Patents

Description

119127

Supply Unit

The invention relates to a supply air device.

It is known in the art to supply room air ceiling devices for supplying air from a ventilation duct to an elongate inlet chamber of the device and preferably distributing it through nozzles on the side of the inlet chamber to and from the device. This nozzle-derived supply air stream induces recirculated air flow to flow through the heat exchanger and further to the fresh supply air from the nozzle chamber in question.

This application discloses a novel inventive device solution related to the above-mentioned type, wherein the device solution comprises a bottom plate that closes the device from below and prevents the recirculation air flow from the room to come directly from below to the heat exchangers. Thus, in the solution of the invention, the recirculated air flow enters the heat exchangers from the side and the fresh air flow from the nozzles induces the recirculated air flow in the room and ·, 20 reverses its direction by about 180 ° and the combined air flow. page. In the solution according to the invention, the bottom plate underneath the device acts not only as an airflow barrier plate but also as an installation plate on which * · · .. ··· can be mounted, for example, lamps. The solution according to the invention is modular in nature and can be used to form a device solution comprising only a base plate without air · ·: ***; 25, and a base plate comprising, for example, fluorescent tubes extending in the direction of an elongated supply air chamber.

The supply air device according to the invention is characterized in that what is shown. · *; In the claim, r: 30

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

Figure 1 shows a first preferred embodiment of the supply air device according to the invention when installed in a room ceiling. The structure shown in the figure is an axonometric partial view in which the end plate J of the device is cut away to show the interior parts of the structure.

Figure 2 shows a second embodiment of the device according to the invention, wherein the base plate comprises a lamp. The structure shown in the figure is an axonometric partial view in which the end plate J of the device is cut away to show the interior parts of the structure.

Figure 3 shows a third preferred embodiment of the invention in which the supply air is blown in one direction only. The structure shown in the figure is an axonometric partial view in which the end plate J of the device is cut away to show the interior parts of the structure.

Figure 4 shows an embodiment of the invention comprising a single heat: 1. #. with a changed bottom plate. The embodiment is suitable for both ceiling mounting and, ·, · wall mounting. The structure shown in the figure is an axonometric partial view, «♦ ·: 1 ·; of which the end plate J of the device is cut to show the interior parts of the structure.

In Figure 1 and in the other figures, the end plate J has been removed and the structure is shown in section to show the interior of the structure. In the embodiments of Figures 1, 2, 3 and 4, a separating plate · · · T may be placed over the heat exchanger 14 as shown in Fig. 1 for a part of the width of the heat exchanger 14, with the help of the separating plate T; directing the recirculated air flow L2 near the nozzles 12ai, 12a2 ... to be discharged ·· ♦ 30 without Li inlet into chamber F. For example, in the embodiment of Fig. 1 and in other embodiments, the heat exchanger 14 is open at 11a · 3 119127 to room H. Plate T extends only a portion of the distance on the upper surface of heat exchanger 14, whereby flow L2 is conducted along heat surfaces of heat exchanger close to inlet chamber 11 where it faces upwardly into mixing chamber F. Plate T thus acts as a separating wall. In this case, the plate structure further separates the inlet side of the recirculated air 5 and the outlet sides of the combined flow L1 + L2. In the figures, the plate T is shown in partial view.

Fig. 1 is an axonometric view of the supply air device according to the invention mounted in a ceiling K of room H or the like. The representation is an axonometric partial stroke 10. The supply air device 10 comprises an supply air chamber 11, which is an elongated chamber structure to which air is led from the inlet duct. Preferably, fresh air is introduced into the inlet chamber 11 into and into the interior space E through nozzles 12ai, 12a2,12a3 ... on both sides of the central axis of the device, nozzles 12ai, 12a2 ... located on both sides of the vertical central axis Y The structure according to the invention shown in Figure 1 is symmetrical with respect to the vertical axis Y. In the embodiment of the figure, the nozzles 12ai, 12a2 ... are located on both sides of the central axis Y of the supply air chamber 11 and through them an air jet Li is provided on two sides of the supply air device 10.

·. According to the invention, the apparatus comprises a bottom plate 13 which closes the apparatus from below. A heat exchanger 14 is disposed on both sides of the central axis Y on the bottom plate, whereby the circulating air L2 of room H can be either cooled or · heated. In the figures, the heat transfer lubricant tubes of the heat exchangers 14 are marked Ui, Lf2 ...

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The recirculated air L2 enters the heat exchanger 14 '/ · above the bottom plate 13 as shown by the arrow L2, and this air L2 is recirculated through the heat exchanger 14 further to the supply air L1 derived from the nozzles 12ai, 12a2 .... . * · Into and induced by. The function of the base plate 13 is to act as a mounting plate ··· · ***: 30 for example for the luminaire 15 and to close the device from below. Therefore, using the device

Ml · * ·. according to the intended purpose, the device can be operated in a modular manner so that various accessories such as a luminaire 15 can be mounted in connection with the base plate 13, whereby the base plate 13 acts as a mounting plate and an airflow shutoff plate preventing the recirculation of airflow L2. directly from below. The bottom plate 13 thus also serves as a mounting surface for the accessories. The recirculated air flow L2 from the room H5 thus changes its direction by about 180 ° after encountering the supply air flow Lj derived from the nozzles 12ai, 12a2 ... in the mixing chamber F. The combined airflow L1 + L2 is led sideways from the device in the direction of the ceiling K in the opposite direction to the recirculated airflow L2 of the room H to the heat exchanger 14. Preferably, as shown in the figure, the inlet chamber 11 extends to or near the bottom plate 13, whereby the device 10 divides the device into two airflow regions D1 and D2 on either side of the vertical center axis Y.

The cover plate 1 Ib of the device serves as the cover plate and the plate structure of the supply air chamber 11, which limits the mixing chamber F from above. The operation 15 of the topsheet 11b is the same in all the embodiments shown.

In all the embodiments shown, for example, a rectangular material plate 13 covers the device from below and acts as a bottom surface of the device.

* · .. 20 Figure 2 shows a luminaire 15 on the underside of a base plate 13. The luminaire 15 comprises a fluorescent tube 15a] arranged parallel to the supply air chamber 11]. The lamp 15 is mounted in the cavity 130 of the base plate 13, whereby the cavity 130 is formed, for example, by squeezing it into the base plate material. Otherwise, the embodiment of the supply air device 10 of Figure 2 corresponds to the embodiment of Figure 1. The unit is mounted on the ceiling of room H at 0 25 K.

Fig. 3 shows an embodiment of the supply air device 10 according to the invention, in which the supply air chamber 11 comprises only one heat exchanger 14 on the other side of the supply air chamber 11. Also in this embodiment, the bottom plate 13 prevents the supply of recirculated air flow directly from below to the heat exchanger 14. The recirculated air flow L2, as shown in Fig. 3, enters the heat exchanger 14 as in the embodiment of Figs. 1 and 2 from the side. The supply air flow Li from the nozzles 12ai, 12a2 ... induces recirculated air flow L2 to flow through the heat exchanger 14 in connection with the supply air flow L1, and the combined airflow L1 + L2 flows sideways from the unit with the supply air flow L2 to the unit Thus, the recirculated air flow L2 changes its direction in the mixing chamber by about 180 °. The flow L1 + L2 leaves the unit above the incoming recirculated air stream L2. As shown in Figure 3, the ceiling K is located near the cover plate 11b of the inlet chamber 11 and the device is secured by the cover plate 11b or its attachment to the ceiling K.

The devices shown in Figures 1, 2 and 3 function specifically as shown in the horizontal installation. In the embodiments of Figures 1, 2 and 3 and in the ceiling installation shown in Figure 4, a recirculating air flow L2 is introduced horizontally and the combined flow Li + L2 or L1 + L2 + L'2 exits above the mixing chamber F horizontally.

Figure 4 shows an embodiment of the supply air device 10 according to the invention, which also has a single heat exchanger 14. The heat exchanger is located completely over the bottom plate 13 at the width of the base plate 13. As shown in Figure 4, the device is mounted on the ceiling K of room H. The heat exchanger 14 receives a first recirculated airflow L2 from room H or the like and said airflow L2 «comes from the supply airflow Li derived from the nozzles 12ai, 12a2 ... · ·. * ·: The connection and the combined airflow are routed sideways from the unit. The recirculation air L2 changes direction about 180 ° in the mixing chamber F to the heat exchanger 14 with respect to its upstream direction. Further, in this embodiment, the second circulating air flow L'2 through the heat exchanger 14 is supplied to the mixing chamber t *; * F as shown in Figure 4. Said second recirculated air flow L'2 is conducted to the heat exchanger 14 via a second side face 14a. Therefore, also in this preferred embodiment, ··· 0 9 * ... * 30 has at least one recirculated air flow L2 which is conducted to • 9! ! T! mixing chamber F such that it reverses substantially 180 ° therein, so that the combined airflow Li + L2 + L2 exiting the device is substantially perpendicular to said first room recirculated airflow L2 to its heat exchanger 14 in the upstream direction . Also in this embodiment, the first recirculated air flow L2, as shown in Figure 4, arrives horizontally at the heat exchanger 14 and, above it, the combined air flow from the device leaves, Li + L2 + L'2 also shown horizontally in Figure 4.

The supply air device shown in Figure 4 can also be used as a wall device on the wall of room H, whereby the combined airflow L1 + L2 + L'2 is adapted to be exiting the device directly up or down along the wall surface.

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Claims (7)

7, 119127 An air supply device (10), comprising an air supply chamber (11) for supplying air from an inlet duct and an inlet canal (11) comprising nozzles 5 (12ai, 12a2 ",) for supplying a supply air flow (Li) to a mixing chamber (F) (10) comprises a heat exchanger (14) for heating or cooling the recirculated air, wherein the recirculated air flow (L2) from the room (H) to the supply air device is led to the heat exchanger (14) and further to the supply air flow (L1) induced by 10, wherein the recirculated air flow (L2) turns about 180 ° and the combined airflow (Li + L2) flows from the mixing chamber (F) in the opposite direction to the incoming recirculation air flow (L2) to the heat exchanger (14), and side, characterized in that in the supply air device from the heat exchanger (14) the recirculated air flow (L2) is directed upwards in the mixing chamber (F) and that there is a bottom plate (13) which closes the device from below and that the heat exchanger (14) is located on the bottom plate (13). Supply air device according to claim 1, characterized in that the supply air device • · • M !. 20 te is fitted to the ceiling of the room (H) or similar (K) and that the room (H) is recycled • ··. The air flow (L2) is supplied horizontally to the heat exchanger (14) and the nozzle • ··! Combined supply air flow (12ai, 12a2 ...) and recirculated air flow • *. · The air flow is also drained horizontally from the mixing chamber (F) * »·. ···. connection. • · * · ♦ 25 Supply air device according to Claim 1 or 2, characterized in that there are two heat exchangers (14) on the outer ·· # · | · # sides of the vertical axis (Y) of the device and that the inlet chamber (14). 11) comprises nozzles (12ai, 12a2 ...) on both sides of the vertical center of the rib (Y). Supply air device according to one of the preceding claims, characterized in that the supply air chamber (11) divides the supply air device at a vertical center axis (Y) 8 119127 into two separate air circulation portions (D1, D2) with the supply air chamber (11) cent. Supply air device according to Claim 1 or 2, characterized in that there is only one heat exchanger (14) above the base plate (13), whereby the inlet chamber from its nozzles (12ai, 12a2) has an air flow only in one direction over the heat exchanger (14). wherein said supply air flow from one of the nozzles (12ai, 12a2 ...) induces recirculated air flow (L2) to flow through the heat exchanger (14) on the base plate (13) such that the recirculated air flow (L2) from the room (H) or the like (14) reverses substantially 180 ° with the device and the combined airflow (L1 + L2) is led to the recirculated airflow (L2) in a direction opposite to the inlet direction from the supply air device and in the device structure the inlet chamber extends substantially to the bottom plate (13). 15 Supply air device according to Claim 1 or 2, characterized in that the supply air chamber (11) extends to a heat exchanger (14) which is positioned over the entire width of the base plate (13) and which is placed on the supply plate (13). 1 ·· of the nozzles (12ai, 12a2 ...) of the chamber is the supply air flow (Li) in one direction from the connection of 1 ··· 20 to the mixing chamber (F), which leads to that mixing chamber. 1: detecting the first recirculated airflow (L2) from the room (H), which changes its [1 direction substantially 180 ° in the mixing chamber (F), and that there is a second recirculation airflow (Lr) conducted from the other side of the device to the same • 1 to 1 through the exchanger (14) into the mixing chamber (F) induced by the supply air flow (Li). 25 na, whereby the combined airflow (Li + L2 + L'2) leaves the unit. • · · ·· 1 ♦ ··· • · • · * · 1 Supply air device according to one of the preceding claims, characterized in that the base plate (13) comprises a lamp (15) at its lower surface. • · • · ··· • · • 2 · · • · 2 • · 3 9 119127