FI80518C - Air distribution method and plant for use in method t - Google Patents

Description

8051 8 1 Air distribution method and equipment used in the method

Luftfördelningsförfarande och anläggning för användning vid förfarandet 5

The invention relates to an air distribution method and an apparatus used in the method.

An air distribution method is known from SE publication 348 548, in which air is adapted to discharge from the supply air source, to travel upwards along the wall surfaces and further along the ceiling surface towards the other end of the room space. In the method according to the SE publication, an attempt has been made to circulate room air from the supply air source induced by the air flow. However, that publication does not provide a solution for controlling room air recirculation when the supply air flow rate and / or flow rate values vary. Therefore, there is no equipment solution in this publication that satisfactorily implements 20 comprehensive room air recirculations with different supply air flows. FI patent application 841284 discloses a supply air device that closes by a palm power function. Correspondingly, DE-A-17 53 283 discloses a supply air device which closes by gravity and opens according to the flow. Neither of the above-mentioned patents discloses a comprehensive solution for a ventilation system adjustable according to the supply air flow of a room, in which air is introduced into the room vertically from the bottom upwards.

In air volume controlled plants, the inlet temperature is kept approximately constant and the amount of air is increased or decreased as the load changes. When blowing from below with low-temperature supply air, problems arise due to thermal forces. With a large amount of air, the supply air device usually works well, but when the amount of air is reduced, the shower cannot rise upwards due to the low outlet speed, but drains down, causing draft.

_____ 35 On the other hand, with a small amount of air, the range of the shower is generally short, resulting in poor air circulation and comfort. There is a clear connection between the range of the shower and the outlet speed. In order for the jet range to remain approximately constant 2 80518 1, the output speed must be within a certain range. With a small amount of air, the outlet velocity should preferably increase to overcome the thermal counterforce.

The object of the invention is a method and an apparatus in which the above-mentioned drawbacks have been overcome.

The method according to the invention is mainly characterized in that the method uses a gravity-controlled supply air duct, the gravity-closing guide plate and the grille part of which control the air flow along the wall surface so that at low air volumes the discharge length is substantially at least equal to large air volumes.

The supply air device according to the invention is mainly characterized in that the supply air device comprises a gravity-closing guide plate which in the closed position closes part of the duct part and in the open position is substantially parallel to the wall surface of the duct part.

In the method according to the invention, it is realized to bring the supply air into the room through the supply air device by directing the air jet on a control plate closing the flow channel controlled by gravity. The force exerted by the jet on the baffle tends to overcome the opposite moment caused by the weight of the baffle with respect to the bearing point of the baffle plate.

25 At a higher volume flow from the surface of the grille, a certain velocity can be measured, which is approximately constant over the entire surface. When the airflow is reduced, the flow cross-section tends to decrease because a smaller amount of air applies less force to the baffle plate. As the control plate tilts, it is subjected to an increasing force and a certain angle of inclination is reached. The baffle directs a small volume flow at high speed into the equalization chamber, from where it further exits through the grille into the room. However, when the flow rate is small, the device achieves a high flow rate and a throw pattern that extends far enough for the flow. This high-velocity flow is controlled along the wall surface of the room. Thus, the invention uses the Coanda effect as an aid and directs the air flow upwards from the supply air device near the wall surface.

According to Kekeinn, the high-velocity air flow is preferably controlled via a wall surface and / or radiators and / or window surfaces. In addition, the Coanda effect of the vertical surface is utilized in this vertical flow. With this flow, the surface temperature of the window and / or the wall can be changed by the supply air. In this way, cold drawing from structures can be prevented and the thermal load caused by the sun can be effectively reduced. When controlling the air flow to the radiator, the heat transfer of the radiators is also promoted. In the ventilation method according to the invention, mucus is introduced from outside the residence zone and the air nuclear jet is circulated past the residence zone. Therefore, there is no air jet draft in the living area of the room. In the method according to the invention, a longer throw than normal is available for the air jet without this being detrimental to the person in the room. According to the invention, a unified control system for ventilation and heating can also be implemented. 15

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

Fig. 1A shows a ventilation method according to the invention in a diagrammatic manner and in a first extreme position of the actuator.

Figure 1B shows a method according to the invention with the adjusting device in its second opening leg position.

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Figures 2A and 2B show diagrammatically the operation of the supply air device. Fig. 2A corresponds to the position of the supply air device of Fig. 1A and Fig. 2B corresponds to the position of the actuator of Fig. 1B, respectively.

Fig. 3A is a section I-I of Fig. 2A, and Fig. 3B is a section ΙΙ-ΙΪ of Fig. 2B, respectively.

Fig. 4A shows an embodiment of the invention in which the deflection e of the high-speed air flow is performed by means of a grille, but the air flow 35 is guided out of the compensating chamber directly through the slats parallel to the wall surfaces of the compensating chamber.

♦ 80518 Ί Figure AB shows an embodiment of the supply air device used in the method according to the invention, in which the flow is deflected from the equalization chamber by means of the guide surfaces of the grille slats.

Fig. 5A shows an embodiment of a supply air device according to the invention, in which the air flow regulating member comprises a flow control part mounted separately on the control surface and in a positionable position.

Fig. 5B shows an embodiment of a supply air device according to the invention, in which a temperature-adjustable air flow control part is mounted on the guide plate.

Figure 6 shows the fitting of the supply air device to the window sill below the window.

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Figure 1A shows a cross-section of the room H. The wall surface is marked with It and the floor with the letter L. The supply air flow is brought from the supply air device 10, the grille part of which is arranged near the floor L, preferably at floor level. The supply air flow is introduced from below 2q upwards and along the wall surface S. Preferably, the flow is introduced so as to wipe the inner surfaces of the window I. The flow rises along the wall S to the roof K of the room H and runs there along the roof. The flow rate must be sufficient to allow recirculation to the air in the living area of room H. The figure shows the air circulation of the room H 25 of the arrows, which is induced by the input from the supply air device. The air is removed, for example, from the exhaust duct C near the roof K of the room H. The air inlet from the supply air device 10 is marked in the flow area L 1.

As shown in Fig. 1A, the flow rate to the supply air duct 10 3Q via duct T can be controlled from room H by controller 20. A control message is passed through control unit 21 to control device 22 in duct E, which regulates the volume flow of air flow.

Fig. 1B shows the control position of the supply air device 10, in which a larger amount of air is introduced into the room H via the supply air device 25 than in the case of Fig. 1A. The adjustment is performed from room H with control 20.

5 80518 1 By using the inlet malt according to the invention and its location close to the wall surface S and bringing the inlet flow from the bottom to the room H along the wall surface S, sufficient recirculation is obtained for both the small air volume in Fig. 1A and the high air volume in Fig.

In the device arrangement and method according to the invention, it is essential that the mucus is introduced into the room H from the bottom upwards and in such a way that the supply air is adapted to enter the room H preferably from the supply air device near the floor. It is also essential for the invention that the supply air device is arranged to be located close to one wall surface of the room H. The input device may have one or more near the wall surface in question.

-jg Figures 2A and 2B show the control events corresponding to Figures 1A and 1B. As shown in Figure 2A, the high velocity air flow is directed directly upwards along the wall surface and / or the window surface in the room space. The corresponding position of the supply air bed is shown in the lower part of Figure 2A. The amount of air is small, but the flow rate is still high. The air flow can be extended sufficiently by using a supply air device 10 according to the invention, the air flow guide plate 14 of which restricts the air flow, reducing the flow cross-sectional area in the flow channel 13. The control plate 14 el is not intended to close the entire channel 13 but only part of it. .

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Figure 2B shows the fully open position of the supply air baffle airflow guide plate 14. The amount of air flow is then large and, however, the slack length of the air flow is similar to that in the case of the small amount of air in Fig. 2A.

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Fig. 3A shows the operating position of Fig. 2A and Fig. 3B shows the operating position of the supply air source of Fig. 2B. The discharge of the air flow from the supply air device 10 is indicated by arrows and L 1. In the case of Fig. 3A, the air flow is directed parallel to the wall surface and / or the window surface and / or the radiator surface 35 to the room space H. The core jet of the flow does not hit the living zone of the room space H. In the case of Figure 3B, the amount of air is large and the slack length is similar to that in the case of Figure 3A.

Fig. 4A shows an embodiment of an air cleaning method and a supply air device 10 according to the invention, in which a high-velocity air flow is directed along the wall 13 'of the air duct 13 directly to the wall surface S. The central axis X of the channel 13 is, when the device 10 is mounted for its use, parallel to the plane of the wall surface S. The supply air duct 10 comprises a body jacket 11 of the supply air device 10. A grille 12 is arranged at the end of the body air bracket 11, which comprises a plurality of adjacent flow control slats 12a. The body flap 11 closes and delimits the flow channel 13. A control plate 14 for controlling the air flow and regulating the air flow, its flow rate and / or the flow rate is placed in the flow channel 13. The control plate 14 is mounted to pivot at one end 14a. The baffle 14 is placed in the flow passage 13 and is adapted so that the air flow does not affect the baffle plate to be in the position completely closing the flow passage 13. When the air flow begins to affect the baffle plate 14, it always treads from the closed position to the fully open position. Depending on the air flow, the equilibrium position of the control plate can also be formed between these extreme positions. The end 12 of the guide plate 14 on the slat side comprises a flow deflecting part 15, which is a plate-like part with a surface plane oblique to the plane of the guide plate 14.

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Figures 4A and 4B show a counterweight 16 which can be mounted on the plate 14. By changing the position of the counterweight, the moment caused by the counterweight with respect to the bearing plate 17 and the force required from the air flow to move the guide plate 14 are changed. In the figure, reference numeral 16 'denotes a counterweight adjustment device 16, preferably an adjusting screw. The counterweight 16 can be attached to different positions in the different abutment recesses in the guide plate 14 or it can be moved to a different position as the screw 16 'moves in the groove of the guide plate 14. The guide plate 14 is articulated to pivot supported by the collar portion 18. The baffle 14 chokes the vir-30 background and at the same time the flow rate increases. From the flow opening between the guide part 15 formed at the end of the guide plate 14 and the wall 13 'of the flow channel 13, the air flow enters the equalization chamber 19.

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In the case shown in Fig. 4A, the baffle 14 significantly restricts the flow and the flow rate increases. That high-speed flow

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7 80518 1 is guided from the inlet comb 19 directly past the slats 12a along the wall surface S.

In the case shown in Fig. 4B, the high-velocity low-air-5 flow rate is also directed to the wall surface. In the embodiment of Fig. 4B, the pivot point of the guide plate 14 is on the wall opposite to the case of Fig. 4A. The flow is directed from the equalization chamber 19 through the flow deflecting surfaces 12a 'of the slats 12a of the louver 12 to the wall surface S. Along the wall surface the air flow travels upwards in the room and sweeps the window surfaces and / or radiator surfaces and in the latter promotes heat transfer to the room H. According to the invention, a high velocity air flow induces air in room H to circulate in room as shown in Figures 1A and 1B.

Fig. 5A shows an embodiment of the invention in which the baffle plate 14 comprises a flow guide member 15 inclined with respect to the plane of the baffle plate. The flow guide guide member 15 is attached to the baffle plate 14 separately. In addition, the part 15 can be positioned to achieve the desired adjustment event at different points on the plate. The base part 15b 20 of the plate 15 comprises an adjusting screw 15c, by means of which the flow guiding part 15 can be positioned relative to the guide plate 14, preferably in the groove of the guide plate 14 or in separate abutment recesses for the adjusting screw.

Fig. 5B shows an embodiment of the invention in which the guide plate 14-25 comprises a guide part 15 at the end opposite the pivot plate 14a of the guide plate 14, which may be a bent part of the plate 14 or a separate part fixed to the plate 14. In this embodiment of the invention, the guide part 15 is connected to the end of the air flow guide plate 14, and said part is a b1 metal part which bends according to the temperature to a position determined by the temperature. Thus, the air flow can also be adjusted as a function of temperature with the double metal part in question.

Figure 6 shows an embodiment of the invention in which the supply air duct 10 is arranged on a window bench below the window I. The supply air flow is thus adapted to immediately wipe the window surfaces. The arrangement according to the invention eliminates the harmful draft caused by the leakage of the windows. The inductive flow from the supply air device also carries with it the leakage flow from the window 8805 and thus the flow from the supply air device acts as a kind of curtain jet.

Numerous advantages are achieved with the method and device solution according to the invention. Ventilation efficiency remains good because the throw is approximately constant at different volume ratios. Effective air mixing already at the bottom improves the air quality in the living area. In the system according to the invention, the space available for the throw length is considerably larger than with conventional blow-in solutions. In floor -10 installation, air jet control can be used to improve the heat transfer of the radiator, for example. In the system according to the invention, the air distribution element is inconspicuous in appearance and integrates with other furniture and structures. In the system according to the invention, the room flows and temperatures are well controllable. In the system according to the invention, the effect of the supply air temperature on the throw length can also be easily compensated, e.g. by using the bi-metal guide shown in Fig. 5B. Thus, the output speed and thus also the throw distance can be easily adjusted and e.g. limited to a certain maximum value.

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Claims (14)

An air distribution method, in which a room space (H) is introduced into the air from a device (10) for entry air in the vicinity of the wall surface 5 (S) and in which method the air is allowed to flow into the room space (H) from the device (10). input air from below, eaten along the wall surface (S), characterized in that in the method an input air device (10) is used which is controlled by the influence of gravity, whereby with the aid of a control plate (14) closing By the influence of gravity and a damper part (12) in the device, the air flow controls in such a way along the wall surface (S) that the throw length at small airflows is essentially atrainstone as great as at large airflows. 15 2. A method according to claim 1, characterized in that at low airflows, the airflow is stripped by means of the control plate (14) to increase the output velocity of the airflow and the airflow is controlled from an equalization chamber (19) located after the control plate (14). surfaces (12a ') in the slats (12a) of the slat system which deflect the current 20 to the wall surface (S). 1 Patent claim Method according to any of the preceding claims, characterized in that in the process the speed of the air flow coming out of the device (10) at the input air is controlled by means of such a control disk (14) which is closed by the influence of gravity which is arranged. -and in the closed position, to turn off part of the flow channel (11) and in the Open position be essentially the direction in the direction of the wall (1Γ) of the flow channel (11). 30 Method according to any of the preceding claims, characterized in that in the process according to the invention the air flow from below is controlled upwards along the wall surface (S) by using the Coanda effect of the wall surface and the air flow is controlled along with the ceiling of the room (H). (K) towards an outlet duct (C), whereby with the current in question, the air in the dwelling station of the room (H) is induced in a circular motion while the air flowing out of the air supply device (10) sucks in air from the room. . Il 13 8051 8 1 5. A method according to any of the preceding claims, characterized in that the air flowing out of the longitudinal air device (10) is controlled along with batteries and / or window surfaces to the ceiling (K) of the room space (H). 5 6. A method according to any preceding claim, characterized in that the method uses such a device (H) for input air, whose control plate (K) is arranged to pivot with the support of one of its outer edges. 10 Method according to any of the preceding claims, characterized in that the method used is the use of such an input air device whose etheric splice (14) comprises a guide part (15) 1 oblique angle 1 relating to the plane surface of the control disk (14). . 15 Method according to any of the preceding claims, characterized in that the guide disc (14) is arranged to move slg to one of the extreme positions either solely by the gravity of the disc (14) or by the gravity of the disc (14). and the force caused by an extra weight (16). An input air device used in the method according to any of the preceding claims, characterized in that the input air device comprises a control disk (14) which is closed by the inversion of gravity, which in the closed position closes to part of the duct part ( 13) and in the open position at the surface of the guide plate (14) substantially with the wall surface (13 ') of the channel portion (13). 10. Device for input air according to the preceding claim, characterized in that the control plate (14) is arranged to pivot one end of one edge in a collar part (18) or the corresponding arranged in contact with the channel part (13). wall surface (13 ') Device for input air according to claim 9 or 10, characterized in that the system comprises in the guide plate (14) a guide part (15) which is at an oblique angle with respect to the plane of the control disk (14). . h 80518 12. An air inlet device according to the preceding claim, c h a r a c t e r i s e d that the ethylene part (15) is a bl-metal part whose position is controlled according to the temperature. Device for longitudinal air according to any of the preceding claims 9-12, characterized in that the device for supply air comprises a flow duct (13), whose center axis is substantially in its operating position in the direction of the plane of the wall surface (S) of the room space (H). Device for input air according to the preceding claims 9-13, characterized in that the device (10) for input air comprises an equalization chamber (19) between the control plate (14) and the flow damper system (12), from which the air flow is controlled by means of control surfaces (12a). ') for the dampers (12a) of the damper system (12) out of the input air device (10). 20 25 30 35 II