EP1724533B1 - System for indoor air treatment and corresponding method - Google Patents

Description

The invention relates to a room with a ventilation system with at least one device for cooling, heating and / or ventilation of a room, with a housing which is associated with at least one primary air connection, at least one recirculation device, at least one heat exchanger and at least one Zuluftauslass.

A ventilation system of the type mentioned is from the DE 101 64 721 known. By means of a fan outside air is drawn in via a primary air inlet and fed to an induction device. Due to the induction effect, room air passes through a heat exchanger and then mixes with the outside air. The mixed air is supplied to the room via a Zuluftauslass. The known system requires due to the large number of components a corresponding space that is not always available, for example, in training as a ground device by structural measures of the room or building.

From the GB 2 244 804 A is a ventilation system known, which has an air duct, each associated with an inlet for outdoor air and for primary air. In particular, the deals GB 2 244 804 A with a mixing device for mixing the two types of air.

The invention has for its object to provide a room with a ventilation system of the type mentioned, which has relatively small dimensions, is inexpensive and / or offers a high level of comfort.

This object is achieved by a room with a ventilation system with the features of claim 1. According to the invention, the recirculation device has at least one circulating air supply device arranged outside the housing and having at least one recirculation air inlet. Consequently, the essential components of the recirculation device outside the housing of the air conditioning device, so that small housing dimensions can be realized. The substantially outsourced recirculation device is simple and optionally feasible even in cramped installation conditions, since it can essentially be configured as a supply pipe or supply channel or the like, wherein only the recirculation inlet for the intake of room air, as secondary air, must open into the room. The conveying of the circulated air is preferably realized by means of the device (basic device) having the primary air inlet, so that no additional air conveying means have to be used for the recirculating air circuit. When designing the room ventilation system as a ground system, it is for example possible to arrange the basic device close to the facade and use for the Umluftansaugung a cup-shaped bottom air inlet, which is connected via an air duct, such as a flexible hose, with the base unit. If the basic device is a decentralized device with outside air inlet, downstream air conveying device (fan) and heat exchanger and the air circulation device has its air inlet outside the housing of the basic device, not only is there a space-saving design, but there is also a high design possibility. Furthermore, the noise of the air conveyor designed as a fan due to the outsourced recirculation device strongly damped, that is, the running noise can only very attenuated escape from the remote recirculation air intake, so that a very quiet operation is possible. The embodiment according to the invention also has the advantage that with very simple measures, a heat output of the heat exchanger which is insufficient for relatively cold outside air can be substantially increased by the recirculating air passing through the heat exchanger, without having to use a completely equipped, expensive and large-sized appliance. Rather, it is sufficient to provide the possibility at a suitable location of the basic device to be able to connect the outsourced recirculation device there. Such a connection (recirculation connection) can be realized easily by simple means.

A further development of the invention provides that the recirculating air supply device has at least one recirculation air blocking device, in particular a recirculating air flap. By correspondingly wide opening or closing of the recirculation blocking device, the volume flow of the circulating air circuit can be controlled or regulated. Preferably, for this purpose, a control or regulating device is provided which is acted upon with corresponding input variables. Alternatively, it is also possible that the recirculation blocking device is accommodated in the basic device, for example in the region of the connection for the external recirculating air supply device.

A development of the invention provides that the circulating air supply device has at least one silencer. It has already been pointed out above that the outsourced recirculation air supply device and the corresponding removed accordingly arranged by the air conveyor of the base device air intake leads to a noise attenuation, so that the operating noise in the room are barely perceptible. Now, if a silencer is installed in the recirculating air supply device, a particularly quiet operation can be realized. This may be, for example, a simple pipe silencer, which is arranged in the air duct / vent pipe of the circulating air supply device.

According to the invention, the recirculation air inlet of the recirculation air supply device is formed on a room air technical device. If the room has several room air technical facilities, which together form the ventilation system, for example, a basic device with another room ventilation device cooperate such that the other device can be used as intended, for example, as a passive recirculation unit, which has a static heat exchanger or radiator and serves to create on warm facade surfaces, such as windows, heat curtains and on the other hand serves as a circulating air inlet. "Passive" here means that the air is conveyed by pure convection. Thus, a double function is exercised by the already existing further device is provided with the recirculation of the Umluftzuführungseinrichtung, so that it is only necessary to connect the other room ventilation device by means of an air duct or the like with the base device to additionally or alternatively record the recirculation mode to be able to. Basically, it should be noted that the recirculation mode can always be done optionally, that is, regardless of the particular embodiment of the device according to the invention, the recirculation mode can be switched on and off, so depending on Betriebsbetriebwunsch- additionally or alternatively available.

It is advantageous if the further room air technical device is designed as a room air technical device. In such a case, the space thus has a plurality of basic facilities, which differ only slightly from each other. In principle, the primary air supply can be realized via the heat exchanger with the basic devices. Furthermore, at least one of the basic devices is provided with a connection for an external air circulation device, wherein another basic device remote or adjacent to it has the recirculation air inlet, which as component of the circulating air supply device communicates with the other basic device. However, as already explained above, it is also possible that compared to the basic device differently configured further air handling equipment, which thus perform other functions, for example, be used to form a heat curtain, are used to realize the inventive design in cooperation with the basic device.

According to the invention, the room ventilation device is a recirculation unit with a static heating element, as has already been discussed.

It is also possible that the air conditioning device and / or the air conditioning device is designed as a bottom unit, wall unit, facade unit and / or ceiling unit.

According to the invention, it is provided that the room air technical device and the room air technical device different Achsteilungszonen of the room are assigned. In many buildings, the facades are divided into so-called axis dimensions, which are usually dictated by the width of the windows. Each window is therefore associated with a aligned Achsteilungszone this, said room ventilation equipment and air conditioning devices of the entire ventilation system are assigned to the Achsteilungszonen. Before each window, for example, in the floor area is a room ventilation device or room ventilation device. Thus, it is possible, for example, to accommodate a ventilation device in a five-windowed space in the respective pitch zone, wherein in the two outer zones and in the central zone recirculation units are located with radiators that operate on the convection principle. The other two devices form the basic air-conditioning basic devices according to the invention, which are connected via the Umluftzuführungseinrichtungen with the passive recirculation units, that is, the passive recirculation units provide for the recirculation air supply device each have a recirculation inlet. Recirculating air entering there is fed to the basic devices via the recirculating air supply devices, with an air conveying system arranged there in each case drawing in the circulating air and passing it via the heat exchanger. At the same time, the air conveying device supplies primary air, which originates in particular from an outside air inlet.

It is advantageous if the primary air inlet is an outside air inlet. This has already been discussed above. In this embodiment, the basic device thus forms a decentralized device.

Alternatively, however, it is also possible for the primary air inlet to be connected to an air line leading to an air center. Accordingly, it is a central air conditioning basic unit. The air center in the building preferably carries out an air treatment, wherein it may be in the processed air to outside air. The treatment is carried out in terms of temperature and / or humidity and / or air filtration. Via an air duct system, the thus treated primary air is supplied to the basic unit. The base unit does not have any additional air handling equipment as the momentum of the primary air coming from the air control unit is sufficient to enter the room. If now the recirculating air supply device outsourced according to the invention come into operation, then the basic device must have a corresponding circulating air connection and it must be ensured that circulating air is conveyed. For this purpose, the circulating air supply device may have an air conveying device, for example a ventilator, or the basic device is equipped with an induction device, so that the primary air or a part thereof develops an induction effect for the circulating air operation.

It is advantageous if the primary air inlet is assigned a primary air blocking device, in particular a primary air flap, preferably an outside air flap. As a result, the volume flow of the primary air can be controlled or controlled. If, for example, extremely cold outside air is present, the intake of the primary air can be reduced or even stopped by a correspondingly wide closing of the outside air damper, so that a recirculation mode or only a circulating air mode is essentially carried out. This leads to a very fast Raumaufheizung. Also for the Primärluftsperreinrichtung is a suitable control or regulating device provided or it is used for the Umluftsperreinrichtung and the Primärluftsperreinrichtung one and the same control or regulating device. According to a preferred embodiment it is provided that the Umluftsperreinrichtung and the Primärluftsperreinrichtung is designed as a common assembly, that is, one and the same locking member, for example, a louver, the control function of the air flows true by the Umluftweg blocked or partially disabled and accordingly the primary air path is accordingly opened wide. So it is for example possible to stop the one air flow by blocking, while the other air flow can flow unhindered. Also intermediate positions are conceivable. This function can be provided, for example, by a 3-way pivoting flap with two inflow paths and one outflow path, wherein the inflow paths are connected on the one hand to the primary air inlet and on the other hand to the recirculation inlet and the outflow path leads to the suction side of the fan. At this point, it should be noted in principle that the inventive design-regardless of their specific design- not only for heating, but also for cooling can be used or that a recirculation mode is present, so the heat exchanger is not in function.

According to a development of the invention it is provided that the outer air inlet is associated with an air conveyor. This has already been discussed above. The air conveying device is preferably designed as a fan, in particular to suck in outside air and feed it to the heat exchanger or to suck it through the heat exchanger.

The room air technical device according to the invention for cooling, heating and / or ventilating a room has, as already described above, a housing, which is assigned at least one primary air inlet, at least one recirculation device, at least one heat exchanger and at least one Zuluftauslass, wherein the air circulation device on the housing side a recirculation connection For at least one arranged outside the housing, at least one recirculation inlet owning Umluftzuführungseinrichtung.

Furthermore, it is advantageous if the circulating air connection is designed as a connection arranged in the region of a side wall of the housing of the basic device. In the case of a floor unit, the lateral arrangement of the connection ensures that only a small height is available, so that accommodation in a raised floor is possible.

Furthermore, the invention relates to a method for cooling, heating and / or ventilating a room, wherein the housing of a ventilation device at least one primary air inlet or inlet, at least one recirculation device, at least one heat exchanger and at least one Zuluftauslass is assigned and wherein a Umluftzuführungseinrichtung outside the housing is arranged and used for supplying circulating air, which is supplied to the air conditioning device and is supplied from this after passing through the heat exchanger via the Zuluftauslass the room.

Figur 1

eine Draufsicht auf eine raumlufttechnische Anlage,

Figur 2

eine Seitenansicht auf einen Bereich einer ausgelagerten Umluftzuführungseinrichtung,

Figur 3

eine perspektivische Prinzipskizze einer raumlufttechnischen Anlage und

Figur 4

ein weiteres Ausführungsbeispiel einer raumlufttechnischen Anlage.

The drawings illustrate the invention by means of embodiments, in which:

FIG. 1

a plan view of a ventilation system,

FIG. 2

a side view of an area of an outsourced Umluftzuführungseinrichtung,

FIG. 3

a perspective schematic diagram of a ventilation system and

FIG. 4

another embodiment of a ventilation system.

The FIG. 1 shows a plan view of a ventilation system 1, the ground devices 2, 3 has. The floor devices 2, 3 are housed in a raised floor of a room 4 of a building and serve to cool the room 4, to heat and / or to ventilate. The floor device 2 is a so-called basic device 5. This has a housing 6 which is provided with a primary air inlet 7 or has a primary air connection. The primary air aisle 7 runs through the facade of the building indicated by the broken line 8 in order to be able to supply outside air via the primary air inlet 7. Accordingly, the primary air inlet 7 is an outside air inlet 9. The outside air inlet 9 is connected via an air flow path 10 to an air conveying device 11, which is designed as a ventilator 12. The fan 12 leads via an air flow path 13 to a heat exchanger 14. Above the heat exchanger 14 is an air grille 15, not shown in detail, which covers a Zuluftauslass 16. The air grille 15 is aligned with the floor 33 of the room 4 ( FIG. 2 ). Between the outside air inlet 9 and the air conveying device 11, a primary air blocking device 17 is arranged within the air flow path 10, which is designed as an external air flap 18. This is downstream of the air flow path 10, an air filter 19. Fan 12, heat exchanger 14, outside air damper 18 and air filter 19 are located within the housing 6. The intake 20 of the fan 12 is a recirculation device 21, which has a recirculating air supply device 22, which is located outside the housing 6 of the base device 5.

The recirculation air supply device 22 has an air duct 23, which is detachably connected to the intake region 20 of the fan 12 by means of a housing-side (housing 6) circulating air connection 24. The recirculation air connection 24 is located on a side wall 45 of the housing 6. Accordingly, the end 28 of the air channel 23 via the recirculation connection 24 of the basic device 5 forming air conditioning device is connected thereto. The air channel 23 is provided with a Umluftsperreinrichtung 25, which is designed as a recirculating air flap 26. Furthermore, a muffler 27 is located inside the air duct 23. The upstream end 28 of the air duct 23 is connected to a further room air-technical device 29, which has a housing 30 and is assigned to the space 4. This is the ground device 2. According to the Figures 1 and 2 is housed in the housing 30, a static heater 31, above which an air grille 32 is located. The air grille 32 is aligned with the level of the floor 33 of the room. 4

According to FIG. 2 the radiator 31 extends only over a partial region of the base surface of the device 29, so that a further subregion, which is likewise covered by the air grille 32, forms a room air inlet opening 34 for room air R, ie secondary air. The thus formed Raumlufteinströmzone 35 within the housing 30 is sealed off by means of a partition wall 36 opposite the side zone of the radiator 31 (heat exchanger), wherein the partition wall 36 does not extend to the bottom 37 of the housing, so that there remains a passage 38. At the opposite to the partition 36 Side wall 39 of the housing 30, the end 28 of the air channel 23 of the circulating air supply device 22 is connected. The radiator 31 associated with the region of the air grille 32 forms an air outlet opening 40; the end 28 of the air duct 23 forms a recirculation inlet 41 located within the housing 30. This recirculation air inlet 41 is located on one side of the housing 30, preferably laterally offset from the radiator 31 (in particular in the region of the water connections of the radiator 31). If the room air inflow zone 35 is included in the air path, the room air inlet opening 34 can also be regarded as a circulating air inlet.

This results in the following function: When the fresh air flap 18 and the closed recirculation flap 26 are open, outside air is sucked in through the air filter 19 by means of the fan 12 and fed to the heat exchanger 14 from below along the air flow path 13. The outside air passes through the heat exchanger and is thereby heated or cooled and fed via the Zuluftauslass 16 to the room 4. If the heat exchanger 14 is not in operation, then there is a ventilation operation.

During operation of the radiator 31, the further room ventilation device 29 opens up the possibility that room air R cooling on the façade (window) of the room 4 enters the room air inlet opening 34, flows through the passage 38 and passes through the static radiator 31 from below and out the air outlet opening 40 heated exits again. It is a convection company. Regardless of the operation of the radiator 31, that is, regardless of whether it is on or off, opens the air conditioning device 21 in addition to the aforementioned operation of the base device 5 a recirculation mode. For this purpose, the recirculation damper 26 correspondingly wide open, so that the fan 12 via the recirculation air connection 24 and the muffler 27 by means of the recirculation air inlet 41, which is formed on the other room ventilation device 29, suck in ambient air R and the heat exchanger 14 can supply. Such an operation makes sense, for example, when the outside air A has a relatively low temperature. It is also conceivable that by closing the outside air damper 18 no outside air is sucked in by the fan 12, so that a pure circulating air operation is driven, for which the recirculation damper 26 has to be moved into a corresponding open position. Preferably, the arrangement is such that the floor devices 2 and 3 are assigned to different spatial axes corresponding to the axis dimensions predetermined by the windows of the facade of the room 4. The described functions are preferably carried out by a control or regulating device (not shown) to which input signals corresponding to sensors / sensors are supplied and which have a control or regulation algorithm, for example in the form of a stored characteristic field and / or a stored value table.

The FIG. 3 clarifies the above statements again in the course of a perspective view. It can be seen that the left-side floor device 3 forms a ventilation device 42, which is provided with the outside air inlet 9 and therefore represents the base device 5. This is via a location outside the housing 6 of the base device 5 Umluftzuführungseinrichtung 22 having a flexible air duct 43, which forms the air duct 23, with the other raumlufttechnischen Device 29, as already described above.

In the FIG. 4 is instead of the ground unit 2 of FIGS. 1 to 3 a cup-shaped bottom inlet 44 of the space 4 with the air guide tube 43 of the circulating air supply device 22 is connected.

Claims (9)

1. Room (4) with a room ventilation system (1) with at least one device for cooling, heating and/or ventilating the room (4) of a building, the room being provided with windows, wherein the windows are associated with axial division zones aligned therewith, with at least one room ventilation device (42) having a housing (6) to which at least one primary air inlet (7) or primary air connection, at least one circulating air device (21), at least one heat exchanger (14) and at least one supply air outlet (16) are assigned, the circulating air device (21) having at least one circulating air supply device (22) which is arranged outside the housing (6) and has at least one circulating air inlet (41), the circulating air inlet (41) of the circulating air supply device (22) being formed on a room ventilation apparatus (29) which is a circulating air unit having a static heating element (31), and wherein the room ventilation device (42) and the room ventilation apparatus (29) are assigned to different axial division zones of the room (4).
2. Room according to claim 1, characterized in that the circulating air supply device (22) has at least one circulating air blocking device (25), in particular a circulating air flap (26).
3. Room according to one of the preceding claims, characterized in that the circulating air supply device (22) comprises at least one silencer (27).
4. Room according to one of the preceding claims, characterized in that the room ventilation device (42) and/or the room ventilation apparatus (29) are configured as a floor unit, a wall unit, a facade unit and/or a ceiling unit.
5. Room according to one of the preceding claims, characterized in that the primary air inlet (7) is an outside air inlet (9).
6. Room according to one of the preceding claims, characterized in that the primary air inlet (7) is configured as a primary air connection which is connected to an air duct leading to an air centre for supplying primary air.
7. Room according to one of the preceding claims, characterized in that a primary air blocking device (17), in particular a primary air flap, preferably an outside air flap (18), is assigned to the primary air inlet (7).
8. Room according to one of the preceding claims, characterized in that an air conveying device (11) is assigned to the outside air inlet (9).
9. A method for cooling, heating and/or ventilating a room (4) provided with windows, having at least one room ventilation device (42), the windows being assigned with axial division zones aligned therewith, wherein at least one primary air connection or inlet (7), at least one circulating air device (21), at least one heat exchanger (14) and at least one supply air outlet (16) are assigned to the housing (6) of the room ventilation device (42), and wherein a circulating air supply device (22), having a circulating air inlet (41), of the circulating air device (21) is arranged outside the housing (6) and is used for supplying circulating air, which is supplied to the room ventilation device (42) and, after passing through the heat exchanger (14), is supplied by the latter to the room (4) via the supply air outlet (16), wherein the circulating air inlet (41) is formed on a room ventilation apparatus (29), which is a circulating air unit with a static heating element (31), and wherein the room ventilation device (42) and the room ventilation apparatus (29) are assigned to different axial division zones of the room (4).

Images