FI115793B - Supply Unit - Google Patents

Description

♦ 115793

Supply Unit

The present invention relates to an supply air device through which fresh air is supplied to a room and which, by means of fresh supply air, circulates room air through a heat exchanger. The heat exchanger can either cool or heat the recirculated air flow.

10 Achieving sufficient adjustment range has often been a problem. Thus, certain supply air units of a constant size range should be capable of being fitted with control devices which can be used to adjust the amount of fresh supply air flow to the desired condition and depending on the installation location of the supply air unit.

15 Normally, the supply air and the room recirculated air flow are supplied from the supply air unit to two sides of the unit so that the flow rate on both sides is 50% of the total flow. If the supply air device is placed in the ceiling of the room next to the wall, it would be advantageous to be able to adjust this flow rate.

Similarly, if the function of the room changes, it would be advantageous to be able to control the flow of the supply air device into the room.

In this application, a new type of supply air device is provided, with an adjustable plate, which is optionally implemented in different adjustment positions, at the nozzles of the supply air device. According to the invention, an adjustable plate / nozzle orifice assembly is provided which provides four different adjustment positions. The plate is movable at a certain horizontal elevation / position to two different adjustment positions, and in addition to another elevation position for adjusting positions 3 and 4. To accomplish the above adjustment, the plate is colored: 30 with elongated openings in the first row and ympyräaukoilla. Advantageously, the above-mentioned adjusting discs are provided in two nozzles on both sides of the vertical axis of the supply air device. Thus, by positioning the supply air device on the ceiling of a room space near the wall, using the device of the invention comprising separate adjusting plates in connection with the nozzles on both sides of the supply air chamber, the flows 5 are controlled through wall-mounted nozzles.

Similarly, if the function of the room changes, it is advantageous to be able to control the flow of the supply air device into the room. In this case, the adjustment may be made by simultaneously reducing or increasing the flows Li from the nozzles on both sides of the supply air chamber 10.

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

15

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

Fig. 1A is an axonometric view of the supply air device according to the invention, partially broken away at one end of the device.

Figure IB shows an air inlet end sectional view of the device of Figure IA and viewed in the direction of the arrow S.

25

Figures 2A-2D show four different control positions that can be achieved with the plate used for controlling the airflow L1 according to the invention. The plate is shown in the supply air; ': in connection with the cover surface of the body R of the chamber 11.

· "30 in Figure IA shows a supply air terminal device according to the invention 10 in its second päätyle belt E, partly in section to show the interior construction of the device. Through illustrations, 115 793 3 in Figure 1 B of Figure IA Apparatus according to arrow S as seen from the end plate E removed to show the interior construction of Fig. As shown in Figures 1A and 1B, fresh air is supplied through the supply air duct P to the supply air chamber 11 of the supply air device 10 and on both sides 5 of the vertical axis Y of the device through nozzles 130ai, 130a2 ... nozzle openings 13ai, 13a2 ... to the mixing chamber Bi (arrow Li) The combined airflow L2 and said supply airflow L1 are combined The combined airflow L1 + L2 is directed to the room space H1 or the like, preferably adjacent to the underside of the ceiling K The combined airflow L1 + L2 flows from the 10 supply air units 10 sideways or downwards. for adjusting its flow rate Li, an adjustable plate 14 is arranged in connection with the supply air chamber 11, by means of which the plate is positioned to obtain the nozzles 130ai, 130a2 · of the supply air chamber 11. nozzle apertures 13ai, 13a2, 13a3 ... covered as desired and thus controlled airflow Li to control the flow rate of supply airflow Li. The recirculated air flow L2 can be either cooled or heated by the heat exchanger 12. The recirculated air flow L2 passes through the perforation Fi or the equivalent of the baffle plate F to the heat exchanger 12. The supply air flow Li induces the recirculated air flow L2 to flow through the heat exchanger 12. The flows L1 and L2 are combined in the mixing chamber Bi between the baffle portion F2 of the plate F and the side plate R1 of the device 10, and the combined air flow L1 + L2 flows in the direction of the ceiling K or * ** «downwardly from the device 10. The baffle plate F comprises baffle portions * * F2 on both sides of the baffle plate F. The heat exchanger 12 is located in the region between the ends of said baffle sections F2 below the supply air chamber 11. Between the baffle portion F2 and the side plate R1 of the supply air device 10, a mixed chamber B1 is formed, from which the combined air flow L1 + L2 is led away from the supply air device 10 through the opening J below. Supply air device 10 of the supply air device 10: · j side panels Ri connected to chamber 11 and additionally end panels E which close the device from the sides and top. The device 10 is thus open at the bottom but closed at the side and top; , structure.

30 115793 4 When adjusting the supply airflow Li, the flow rate of the combined flow Li + L2 is also adjusted to the desired value. Thus, decreasing the supply air flow rate Lj reduces the combined flow rate Li + L2 exiting the supply air device, respectively, and increasing the flow rate Li 1 increases the flow rate of the combined flow Li + L2. The adjustment can be reduced to one side of the intake air is 11-makammion nozzles 130ai, 130a2 ... future and increases the flow rate of, for example, the amount corresponding to the second side of the device from nozzles 130ai, 130a2 ... incoming flow quantity.

According to the invention, the plate 14 comprises a guide groove U having a horizontal first groove U1, a vertical groove U2 and a second downward horizontal groove U1 which is parallel to the groove U1. A control pin 14ai is attached to the body R of the device supply air chamber 11 on its upper surface. In the illustrated embodiment, the plate 14 is adjustable to four different adjustment positions 15, 1, 2, 3 and 4 by moving the plate 14 relative to the pin 14ai. The plate 14 can thus be positioned either in position 1, in position 2 in the same vertical position or by moving / moving plate 14 so that pin 14ai moves into groove U3 to obtain adjusting positions 3 and 4. The plate 14 comprises elongated openings 15ai, 15a2, 15a3. .. and below the openings 16ai, 16a2, 16a3 · .. in the second horizontal row X2 parallel to each other and comprising a circle. surgery. The plate 14 is preferably guided by two guide pins 14ai which

M1 · 'are located in 14 different end regions of the disk.

When adjusting positions 1 and 2 are used, the plate 14 is moved so that the pin 14ai is located at the bottom of the groove U1 or at the other end of the groove U1 near the vertical groove U2.

In control position 1, as shown in Figure 2A, maximum flow is achieved, with all of the 8 nozzle openings 13a1, 13a2 ... 13a8 shown in the figure being open.

When the plate is moved as shown in Fig. 2B with the guide pin 14ai in the V: 30 adjustment position 2, part of the nozzle openings 13ai, 13a2 ... closes with five: * nozzle openings.

• * * »115793 5

When the plate 14 is moved so that the pin 14ai is located at a height and the horizontal row X2, either adjustment position 3 or 4 is reached in adjustment position 3 with pin 14aj in groove U3 at the U2 end and three nozzle openings 13a, 13a2 ... eight. ). When the pin I4ai is in the adjusting position 4 at the closed end of the groove U3 as shown in Figure 2D, all the nozzle openings 13ai, 13a2 ... 13a8 are closed.

Thus, depending on the need for adjustment of the supply air device, the plate 14 may be mounted on either side of the supply air chamber 11 of the device 10 in desired adjustment positions or only the other side of the supply air chamber 11 of the device 10 is provided with a plate 14. Thus, in the solution of Figure 1A, two plates 14 or only one plate 14 may be used to close the nozzle openings 130a], 130a2, 130a3 ... nozzle openings 13ai, 13a2 ... and adjust the flow rate of the air flow L1.

• 1

Claims (6)

6, 115793 An supply air device (10) comprising an supply air duct (P) through which the supply air (Li) is supplied to the supply air chamber (11) and further through nozzles (130ai, 130a2 · ..) such that said supply air flow (Li) induces recirculated air. flow (L2) from the room (Hi) or the like to flow through the heat exchanger (12) and wherein the combined airflow (L1 + L2) in the device solution is further flowed to the room (Hi) or the like, characterized in that a plate (14) ) which can be inserted into the optional arms 10 in connection with the nozzle openings (130ai, 130a2 ..), the plate (14) having openings (15aj, 15a2, 16ai, 16a2 ...) which in the respective adjustment position, adjustable to the desired nozzle openings (13ai, 13a2 · ..) of the supply air chamber (11), allowing air flow (Li) through the openings (15ai, 15a2 ..., 16ai, 16a2 ...) of the plate (14) , which are located in the nozzle openings (13ai, 13a2 ...) of the supply air chamber (11) and that the plate (14) comprises openings (15ai, 15a2, 15a3 ...) in the first horizontal row (Xj) and openings (16at, 16a2 ...) in the second horizontal row (X2), and that the plate (14) comprises grooves (U1, U2, U3), and; wherein the supply air device comprises a control pin (14a0 or the like, wherein by means of the control groove (U1, U2, U3) the plate (14) is accurately guided to effect the adjustment positions 1,2,3: Y: 20 or 4 and thus adjust the flow rate of the supply air flow (Li). •: '-: sex. • · * * I Supply air device according to the preceding claim, characterized in that the plate (14) comprises elongated openings • ', · 25 (15ai, 15a2, 15a3 ...) in the first horizontal row (Xi) and openings (X2) in the second horizontal row (X2). 16ai, 16a2 · ..), »a> :: comprising a circular cross-section. Supply air device according to one of the preceding claims, characterized by ·; , in that the guide groove (U1, U2, U3) is located at least in two positions of the plate (14). * · ·, 30 dassa. 115793 Supply air device according to one of the preceding claims, characterized in that the guide pin (14ai) is attached to the body (R) of the supply air chamber (11) of the supply air device (10). Supply air device according to one of the preceding claims, characterized in that the groove (U1, U2, U3) consists of a first horizontal groove (U1) and a third vertical groove (U3) associated therewith, which is the first horizontal groove (U1). ) and that the first adjusting position 1 is achieved at the closed end of the groove (Ui) with the guide pin (14ai) therein and the second adjusting position 2 is achieved when the guide pin (14ai) is at the junction of the vertical groove (U2) and the horizontal first groove (Ui). when the guide pin (14at) is located at the junction of the vertical groove (U2) and the second horizontal groove (U3) in the groove portion (U3) and that the fourth adjusting position 15 is achieved when the guide pin (14ai) is located at the closed end of the second horizontal groove portion (U3). ·. Supply air device according to one of the preceding claims, characterized in that the plate (14) achieves the following adjustment positions: 20 · - adjustment position 1, in which the guide pin (14a0 is located in the first groove portion (Ui): : 13a2 .. :) are open. I ',: 25 - when the guide pin (14ai) is located in the second vertical groove * in the horizontal groove (U1). · (U2) reaches the adjustment position 2 with 5/8 of the nozzle openings 1; is open • ·,:, - when the control pin (14a0 is located at the end of the second horizontal groove portion (U3) - <> · 30 vertical groove portion (U2) reaches the 3rd adjustment position with 3/8 of the nozzle openings 8 115793 - and when the guide pin (14ai) is in the adjusting position 4 at the closed end of the second horizontal groove (U3) all the nozzle openings (13at, 13a2 ...) are closed t · * »* o 115793