EP2633240B1 - Ventilation arrangement having a vapour extractor hood - Google Patents

Description

The invention relates to a ventilation arrangement with an extractor hood, in particular in the form of a fume hood for the area of a kitchen, a bath o. The like. Rooms, according to the preamble of claim 1.

Ventilation arrangements with extractor hoods in various designs have long been known ( US 2,898,840 ), in which hoods a fan provided for circulation filtering can be integrated ( GB 1551487 . DE 36 23 210 A1 . EP 189952 B1 ) or to establish a connection to an external ventilation system ( DE 103 14 410 A1 ; DE 85 10 615 U1 ; DE 35 14 712 A1 ; US 5,377,665 ).

According to DE 83 07 492 U1 an extractor hood is shown, in which for optimum heat utilization in a closed system respective heat exchangers are integrated, such that provide constant flow channels with invariable inlet openings for a uniform heat distribution. In a kitchen hood according to DE 100 24 619 A1 The exhaust air is introduced in the form of kitchen fume over suction gaps in the system so that at downstream plate heat exchangers heat recovery is possible.

In DE 43 43 759 A1 a ventilation arrangement proposed for ventilating rooms is shown, wherein this system is preferably arranged in the ceiling edge area of the respective room. The construction provides that substantially horizontally extending and at least three side walls having collecting channels are formed in a box-like structure. By means of an appropriate Saugstromes the directed via respective separator haze can be supplied to the region of the collecting ducts, such that thereafter, the largely purified exhaust ducts in the region of a diversion tube can be removed from these peripherally closed collecting ducts. In the longitudinal direction of the collecting ducts, however, different intensities of the haze absorption arise due to different distances from zones of the haze inlet to the diversion pipe, so that the system can be used in total only for zones with low suction powers and "silent ventilation".

A similar ventilation arrangement is in US 2004/0035411 A shown, wherein from a vapor receiving chamber, the mist is sucked through a separator in the co-operating with external breather Leitkanalsystem. This suction in the range of the extractor hood can be adjusted only in the region of a arranged in front of the separator control unit in the form of a thrust plate.

For a supply and exhaust hood according to DE 89 11 867 U1 In the area of a filter chamber, two fans reachable by the upper supply air are arranged at the edge region of the housing such that a suction known per se can take place in the region of a lower chamber.

For a targeted absorption of water and / or greasy vapor is in DE 195 09 917 C1 proposed a construction in which above each of a ceiling suspended hoods a variety of suction pipes and channels is to install. With this elaborate ventilation system is over Specific work areas have a targeted extraction of fumes, and a resulting condensate must be collected in the area of the separator.

For an extractor hood with supply air supply according to DE 30 11 101 A1 Heat exchangers are also provided, so that here too, the heat energy of the exhaust air can be used to preheat the supply air extending above the suction in lines.

In EP 1 310 740 A1 a generic exhaust air duct is proposed for the equipment of ship spaces, starting from a vapor receiving space formed on the underside of the hood, the water and / or greasy vapor collected via a separator in a channel and fed directly from this outlet outlet. These are to be connected to respective provided in the ceiling area of the room exhaust ducts, such that with a correspondingly high space requirement for the plurality of pipelines a disadvantageous in tight ship-spaces time-consuming and costly installation effort arises.

The invention is concerned with the problem of providing a ventilation arrangement with a hood, which can be produced with little technical effort, with a relatively low height allows a ceiling installation position, can be installed here with reduced installation costs and to changing conditions of use with varying suction easily and with little user effort is customizable.

The invention solves this problem with a ventilation arrangement with an extractor hood according to claim 1. Further advantageous embodiments will become apparent from the claims 2 to 32nd

The ventilation arrangement according to the invention is provided with an extractor hood, which forms a compact two-chamber functional unit with an exhaust duct receiving the filtered exhaust air and a directly connected to this Ausleitkammer with outlet, optimally adaptable to cramped conditions in the field of marine equipment o is and comparatively easy to connect to an existing ventilation system.

With this compact functional unit per se known hood constructions can be replaced with "one-piece collection channel", since these previously installed constructions each above the hood a variety of - to be connected at different positions with the channels through welded joints - vent tubes required and with these vent tubes of small installation space in particular in the area of a ship's galley o. The like. Even further adversely has been limited.

The channel is provided in the region of the distribution shaft or the diversion chamber with a return connection which detects at least a partial volume of the filtered exhaust air. It is provided that from the channel out a substantially freely definable part-air volume is diverted from the already filtered exhaust air and this either passes directly into the kitchen area or is added to a substantially fresh air-containing air supply system.

With this return connection it is achieved that the - dimensionable in dependence on a respective size of the kitchen area to be vented - construction can be manufactured and installed with relatively smaller dimensions. With the advantageous feedback "power reserve" is already diverted from the exhaust air, so that the required flow capacity is reduced at the outlet and thus in addition to cost and weight savings on the system and energy savings during operation is achieved.

In the case of the extractor hood according to the invention, in each case a plurality of distribution ducts accommodating the exhaust air interact in the region of variably executable discharge openings with only the one discharge chamber integrated into the hood structure. Thus, the filtered exhaust air can be collected in a discharge chamber from a plurality of distribution wells and forwarded or sucked off by means of only a single outlet nozzle provided on this. The thereby arranged between lying distribution wells cooperate with the respective vapor receiving space of the provision in variable sizes hoods that allow selectively selectable zones below the hood with optimally adjustable intensity targeted ventilation while the transmission power can be adjusted by hand or automatically controlled , This makes it clear that the invention designed distribution shafts with the respective inlet and outlet openings in the air flow define an intermediate member in the manner of a "control chamber", which interacts with the downstream diversion multifunctional.

The discharge openings provided within the extractor hood between distributor shaft and diversion chamber in the region of a dividing wall are variable in size and / or number for customer-specific constructions. In this case, the extractor hood provided as a preassembled unit can already be "preset" in the production phase in the region of the inlet-side separator and the subsequent discharge openings to respective passage parameters dependent on the opening size or opening selection. It is also conceivable, on the other hand in the region of the diversion ducts transversely connected to the diversion also provide several outlet or intended for this connection openings, so that according to the installation situation either or simultaneously one or more outlet can be used or closed and thus the hood than during assembly variably adjustable "Gleichbaugruppe" is optimally suited for mass production.

On the basis of the fact that respective adjusting slides or the like are known per se in the area of the separators provided as filters, in the construction according to the invention the distribution well can be additionally set to predefinable suction powers or changes in the air volumetric flow rate in the region of its intermediate discharge openings. For this purpose, corresponding flaps, slides o. The like. Closing elements are conceivable in the region of the diverter openings having partition, which can be operated by hand or by means of a motor drive.

This functionally integrated design of the "one-piece" extractor hood with two-chamber system provides that the discharge chamber by means of a kind of intermediate shelf provided support wall - in relation to the ceiling part of the hood - is divided so that a variable size executable discharge chamber is defined with little effort and with little technical effort a lateral connection to the particular two parallel distribution wells out is possible.

The supporting wall of this false floor is expediently provided with inspection openings, which are in the form of a peripheral seal having flaps o. The like. Run. It is understood that by a series of several of these cleaning flaps a complete accessibility is ensured in the region of the diversion chamber. It is also conceivable that in the area of these flaps the pollution detecting sensors or display elements are provided and they can also be combined with motor actuators for flap movement.

In an expedient embodiment, the cleaning flaps are contoured so that - despite the upstream filter - reaching from the distribution wells into the Ausleitkammer oil or water parts on the inner sides of the flaps are deposited and can be accommodated in their contours formed as a trough or trough. This can be done with relatively little effort a quick cleaning of the hood in the area of these inspection flaps, and existing by the deposition of oil fire risk is substantially reduced.

With the manhole-chamber unit according to the invention, an extractor hood is provided which can be reduced in weight with comparatively little material and forms an advantageously small-sized assembly with high efficiency. Due to the function-integrated actuating and control modules are - with appropriate Size of the hood, for example, at a length of more than 3 m and a width of about 2 m - given a variety of ways to vary the ventilation conditions in each useful zone below the hood. The installation of the system is very simple, so that the installation costs in comparison with previously used systems are advantageously low.

In a further design and application-optimized design is provided that in the contour of the hood construction a connectable to a Fristluftzufuhr channel guide is integrated, so that - in addition to the targeted extraction - with little installation effort and the supply of fresh air in variably predetermined usable areas below the Dunstaufnahmeraumes possible is.

Depending on the size of the ventilation arrangement, it is also conceivable to install a plurality of individually or jointly connectable return connections in the system, so that a rapid variation and adaptation of different volume flows of the total volume of air to be derived from the channel is possible.

An additional air distributor can be integrated in the variably configurable system of the return connection so that the partial volume "separated" from the exhaust air volume can be controlled. This can already be achieved, for example, by means of a corresponding arrangement of flaps for regulation, the respective position of which influences the "branched off" volume. Advantageously, a controllable Arrangement of valves can be achieved for control, with their respective position affects the "branched" volume. Advantageously, a fan having a controllable drive is interposed in the region of the diversion duct in such a way that its variable control can actively influence the respective size of the partial volume to be conveyed.

This fan design can be designed so that the sub-volume is diverted directly from the exhaust air directed to the outlet and returned to the fresh air duct. In a further advantageous embodiment, it is provided that an axial fan integrated into the chamber is provided as the air distributor and the subvolume is deliberately returned to the vicinity of the extractor chamber via a transfer chamber. In a further embodiment, this feedback connection integrated in the hood system can be designed with a transfer chamber having an adjustable closure, from which the partial volume is directed in a specific direction to the extractor hood of the extractor hood or to the room.

It is understood that this compact system with return connection for parts of the exhaust air may have further optimizing details, for example, provided in the region of the distribution well behind the filter liquid discharge, several transfer chambers can be integrated into the system and / or with closable outlet a recirculation mode of the construction is conceivable.

Fig. 1

eine perspektivische Unteransicht der erfindungsgemäßen Dunstabzugshaube mit Auslassstutzen,

Fig. 2

eine perspektivische Draufsicht der Dunstabzugshaube gemäß Fig. 1,

Fig. 3

eine teilweise geschnittene Stirnansicht der Dunstabzugshaube gemäß einer Linie III-III in Fig. 2,

Fig. 4

eine teilweise geschnittene Seitenansicht gemäß einer Linie IV-IV in Fig. 1,

Fig. 5

eine perspektivische Unteransicht ähnlich Fig. 1 mit weiteren Einzelteilen im Bereich der Ausleitkammer,

Fig. 6

eine vergrößerte Ausschnittsdarstellung gemäß VI in Fig. 5,

Fig. 7

eine Schnittdarstellung ähnlich Fig. 4 mit jeweiligen Stellbaugruppen im Bereich der inneren Ausleitöffnungen,

Fig. 8

eine Schnittdarstellung gemäß einer Linie VIII-VIII in Fig. 7,

Fig. 9

eine perspektivische Draufsicht im Teilschnitt auf die Dunstabzugshaube mit zusätzlichem Frischluftanschluss,

Fig. 10

eine Schnittdarstellung des Systems gemäß einer Linie X-X in Fig. 9,

Fig. 11

eine Schnittdarstellung einer Lüftungsanordnung mit einer Dunstabzugshaube,

Fig. 12

eine Perspektivdarstellung schräg von unten auf die Dunstabzugshaube gemäß Fig. 11,

Fig. 13

eine perspektivische Draufsicht auf die Dunstabzugshaube gemäß Fig. 12,

Fig. 14

eine Seitenansicht der Dunstabzugshaube gemäß Fig. 12,

Fig. 15

eine Schnittdarstellung der Dunstabzugshaube gemäß einer Linie A-A in Fig. 14,

Fig. 16

eine Unteransicht der Dunstabzugshaube gemäß Fig. 14,

Fig. 17

eine Draufsicht der Dunstabzugshaube gemäß Fig. 14,

Fig. 18

eine Schnittdarstellung der Dunstabzugshaube gemäß einer Linie B-B in Fig. 17,

Fig. 19

eine Unteransicht der Dunstabzugshaube ähnlich Fig. 12, und

Fig. 20

eine Schnittdarstellung ähnlich Fig. 15 mit laminaren Strömungslinien einer die Umluft einleitenden Abdeckung und den Lufteinlass der Haube.

Further details and advantageous embodiments of the invention will become apparent from the following description and the drawing, in which an embodiment of the ventilation arrangement with extractor hood is illustrated in more detail. In the drawing show:

Fig. 1

a perspective bottom view of the extractor hood according to the invention with outlet,

Fig. 2

a perspective top view of the hood according to Fig. 1 .

Fig. 3

a partially sectioned front view of the hood according to a line III-III in Fig. 2 .

Fig. 4

a partially sectioned side view along a line IV-IV in Fig. 1 .

Fig. 5

a perspective bottom view similar Fig. 1 with further individual parts in the area of the diversion chamber,

Fig. 6

an enlarged sectional view according to VI in Fig. 5 .

Fig. 7

a sectional view similar Fig. 4 with respective control assemblies in the region of the inner discharge openings,

Fig. 8

a sectional view according to a line VIII-VIII in Fig. 7 .

Fig. 9

a perspective top view in partial section of the extractor hood with additional fresh air connection,

Fig. 10

a sectional view of the system according to a line XX in Fig. 9 .

Fig. 11

a sectional view of a ventilation arrangement with an extractor hood,

Fig. 12

a perspective view obliquely from below on the hood according to Fig. 11 .

Fig. 13

a perspective top view of the hood according to Fig. 12 .

Fig. 14

a side view of the hood according to Fig. 12 .

Fig. 15

a sectional view of the hood according to a line AA in Fig. 14 .

Fig. 16

a bottom view of the hood according to Fig. 14 .

Fig. 17

a plan view of the hood according to Fig. 14 .

Fig. 18

a sectional view of the hood according to a line BB in Fig. 17 .

Fig. 19

a bottom view similar to the cooker hood Fig. 12 , and

Fig. 20

a sectional view similar Fig. 15 with laminar flow lines of the recirculating air introductory cover and the air inlet of the hood.

In Fig. 1 shows an oblique view from below a generally designated L ventilation arrangement, to which a designated generally by 1 extractor hood is connected. This extractor hood 1 is provided in particular in the form of a fume hood for the kitchen area of a marine equipment, with general applications in kitchens of restaurants, houses or wet rooms of other buildings are conceivable.

This hood 1 has a known housing-like structure ( EP 1 310 740 A1 ) and can be connected to a venting system 3 by means of an outlet connection 2 or the like. In synopsis with Fig. 2 and Fig. 3 It is clear that this hood 1 with an upper ceiling part 4 and each of this angled longitudinal and transverse side parts 5, 6 and 7, 8 in an installed position ( Fig. 3 ) forms downwardly open vapor receiving chamber 9. Under the action of an air flow S, S '( Fig. 1 . Fig. 3 ) generating external Saugantriebs (not shown) is out of the vapor receiving chamber 9 out water and / or fatty mist via a deposition 10 in a generally designated K channel ( Fig. 3 ) received and forwarded as largely purified exhaust air T to the outlet port 2 out.

The exhaust hood 1, in the inventive design as the filtered exhaust air T receiving channel K at least one distribution shaft 11,11 ', which cooperates with an at least partially integrated into the hood structure discharge chamber 12. For this purpose, the distribution shaft 11, 11 'in the connection region to the discharge chamber 12 out with respective discharge openings 13, so that the formed in the flow direction S' behind the separator 10 exhaust air flow T reaches predetermined "pathways" in the discharge 12 and from this as Exhaust air T '( Fig. 3 . Fig. 10 ) can be sucked (suction direction S, Fig. 1 ).

The optimum design of this two-chamber functional unit forming extractor hood 1 provides that the discharge chamber 12 is provided in particular only with one of the outlet 2. In this case, constructive variants can be carried out so that several distribution wells 11, 11 'with the only one discharge chamber 12 cooperate. Likewise, it is conceivable that the discharge chamber 12 in the longitudinal direction ( Fig. 1 ) also spatial structures R (forming several subareas) Fig. 5 ) with z. B. transverse walls and / or guide channels may have, so that the flow conditions in the discharge chamber 12 is influenced or can be adjusted or regulated by varying arrangements (not shown).

From the perspective view according to Fig. 1 is in synopsis with the sectional view in Fig. 4 it is clear that the at least one distribution shaft 11, 11 'is provided in the region towards the discharge chamber 12 with a separating wall 14 having the discharge openings 13. The possibility is shown of providing the distribution shaft 11, 11 'or its respective partition 14 with a variable number of discharge openings 13. Likewise, it is provided that the discharge openings 13 are formed with differently sized or contoured passage cross-sections and constructively extended variants with adjustabilities or complete closure of the openings can be provided.

From the illustrations according to Fig. 1 and Fig. 3 such as Fig. 5 to Fig. 10 It is clear that the hood 1 has two each outwardly directed filter parts 15 as separators 10 having distribution slots 11 and 11 ', these are arranged substantially mirror images of the longitudinal center plane M and all of the discharge 13, 13' each in the substantially centrally arranged discharge chamber 12 merge.

This extractor hood 1 having at least one distribution shaft 11, 11 'and a discharge chamber 12 is advantageously provided as a preassembled structural unit, so that in a functional space planned especially as a ship kitchen or the like, only in the area of the single outlet nozzle 2 a connection with the external suction drive having venting system L is required and thus a quick and relatively easy installation is possible. In this case, welding connections which have been carried out in a complicated manner in the area of several pipe connections in the area above the system have been dispensable so far, and the installation of the connection 2 can be carried out comparatively easily even in a confined space.

To further improve this mounting situation, it is provided that the outlet connection 2 in its pre-assembly position prepared for installation ( Fig. 2 ) Is connected to the ceiling part 4 so that for the individual components in respective directions indicated by arrows A, B, C, there is a possibility of displacement, so that the connection to a already fixed at 3 connection line out according to variably possible and positional deviation according to varying installation conditions easy are correctable.

The concept of the two-chamber system according to the invention provides that the extractor hood 1 in the region of the vapor receiving chamber 9 or the payload zone Z located below it at a distance H (FIG. Fig. 4 ) can be set to each predetermined suction or air volume flow rates (arrow S, S '), wherein the separator 10 and / or the distribution wells 11, 11' with the discharge chamber 12 form a correspondingly cooperating system.

In the illustrated embodiment it is clear that at least in the region of the inlet-side separator 10 of the distribution shaft 11, 11 'respective in the form of flaps or sliders formed adjusting elements 16 ( Fig. 1 ) are provided. These adjusting elements 16 can be displaced in a pushing direction D along a guideway 17 in such a way that an inlet region for the distribution shaft 11, 11 'which is required in each case according to the design of the useful zone Z is released or covered. This principle of changing the air inlet S 'or the internal flow path T for the aspirated at different positions haze or the redirected exhaust air T' is selectively achieved in the transition region of the distribution shaft 11, 11 'to the discharge 12 through the partition 14. For this purpose, adjusting elements 16 'are optionally provided ( Fig. 4 ). These can each be designed in the form of plates 18, which are held displaceably in a setting direction E and allow the change of the passage cross-section in the region of the discharge openings 13 ( Fig. 4 ).

It is understood that the above-described adjusting elements 16, 16 'in an expedient embodiment can be operated by hand. It is likewise conceivable for a motor drive to be integrated into the system for setting the control assemblies 16, 16 '( Fig. 5 to Fig. 8 ). A further simplification in the region of the respective openings 13 or the filter 15 is possible in that in the region of all of the adjusting elements 16 and / or 16 'by means of only one respective drive or operating part, the adjustment is possible or only having a corresponding length Flap can detect all openings at 16 or 16 '(not shown).

For the construction of a comparatively low installation height P ( Fig. 4 ) having exhaust hood 1, the discharge chamber 12 in an appropriate embodiment characterized formed, that only a provided in relation to the ceiling part 4 in the manner of a false floor support wall 19 is installed in the housing-like construction ( Fig. 3 ). By a distance F of this support wall 19 to the ceiling part 4, a respective optimum internal height of the discharge chamber 12 is defined and at the same time to the lateral distribution wells 11, 11 'down the height of the partition 14 given.

It is advisable to form the support wall 19 in total as a removable plate or in the region of the installation wall horizontal support wall 19 respective access openings ( Fig. 1 to be provided so that in each case the discharge chamber 12 is relatively easily accessible from the vapor receiving space 9 ( Fig. 1 . Fig. 4 . Fig. 5 ). In this case, the inspection opening provided in the support wall 19 is provided with an edge seal 21 having and pivotally held flap 22 (FIG. Fig. 4 . Fig. 5 ) Mistake. In the longitudinal direction of the hood 1 ( Fig. 1 . Fig. 5 Advantageously, a series of several of the cleaning flaps 22, 22 ', 22 "are lined up, so that partial or complete access to the interior of the diversion chamber 12 is achieved in the area of the support wall 19. In an advantageous embodiment, at least one of the cleaning flaps 22, 22', 22 "a luminaire 23 integrated.

In a further embodiment, provided in the region of the support wall 19 cleaning flap 22, 22 ', 22 "have a closing position in the manner of a collecting container acting contour G in the manner of a trough or trough-like shape, such that in this separated from the exhaust air T. Oil and / or water residues are receivable, so that a comparatively simple cleaning of the hood 1 possible and the risk of fire in appropriate kitchen rooms o. The like. Zones Z substantially reduced.

In Fig. 5 an embodiment of the extractor hood 1 is shown, in which in the region of the diversion chamber 12 and the distribution shaft 11, 11 'design details are optimized. Starting from the mist feed into the system, which is indicated by an arrow S ', the filtered exhaust air T in the region of the distribution wells 11, 11' now reaches the suction boxes R (FIG. Fig. 5 ). By this system extension, the precision and positionally accurate air flow within the two-chamber assembly is further improved because now directed to the useful zone Z suction S 'can also be concentrated on one or more of the boxes R, within the distribution wells 11, 11' a "Transverse displacement" of the air flow T is avoided and thus the suction power losses are reduced during the transition into the discharge chamber 12. For practical application, this means that, for example, in the area of a large kitchen panel with several burners targeted only one of these burners can be influenced with the suction S 'and thus optimize the efficiency in an operating area.

A further improvement of the suction control in the region of the discharge chamber 12 is in the embodiment according to Fig. 5 to Fig. 8 achieved in that in the region of the partition wall 14 and its discharge openings 13 "motor control elements 16" are arranged and these cooperate with a flap 18 formed as a flap 18 ( Fig. 6 ). This can be a flexibly controllable change in the passage cross-section be reached, and at the same time there is a corresponding deflection of the delivered air flow in presettable or with the servomotor 16 'changeable directions (arrow U, Fig. 6 ). It is understood that this construction with the pivoting wings 18 'is advantageously carried out so that each of the boxes R is assigned an individually controllable adjusting element 16 ".

From the illustrations according to FIGS. 9 and 10 a further embodiment of the housing-like construction of the hood 1 is clear, which is provided with at least one air intake receiving lead 25. Corresponding to the size of the extractor hood 1 it is provided that a plurality of supply lines 25, 25 ', 25 "are arranged in particular in the direction of the longitudinal side walls 5, 6. These supply lines each extend from the area of the upper ceiling part 4 with a guide angle W to the useful zone Z , so that in their area an optimal fresh air line is reached.With a directional arrow FL is in Fig. 10 for example, the introduction of fresh air into the system indicated, this air supply can be aligned so that an unwanted immediate transfer in the suction direction S 'of the exhaust air is avoided. Here, too, 26 adjustable control elements, flaps o. The like. Control elements can be provided in the region of the outlet opening (not shown).

In Fig. 11 shows a sectional view of the principle of a generally designated L 'ventilation arrangement to which a generally designated 1' extractor hood is connected. The extractor hood 1 'is by means of an outlet 2' ( Fig. 13 ) connected to a venting system 3 ', wherein the Hood has a box-like structure. In each case, from a ceiling part 4 ( Fig. 17 ) downwardly angled longitudinal and transverse side parts 5, 6, 7, 8 in an installed position ( Fig. 12 ) downwardly open vapor receiving chamber 9.

For this, water and / or greasy vapor can be taken up via a separator 10 'in a channel K' and forwarded to the outlet nozzle 2 'as largely cleaned exhaust air (arrow representations T, T'). The extractor hood 1 'is embodied such that this duct K' accommodating the filtered exhaust air T, T 'has a distribution shaft 11 "having at least one respective discharge opening 13. This opens into a discharge chamber 12' which is integrated into the housing structure at least in regions Outlet 2 '( Fig. 11 ; Fig. 15 ).

In the embodiment of the extractor hood 1 ', it is provided according to the invention that the channel K' in the region of the distribution shaft 11 "and / or the diversion chamber 12 'is provided with a return connection TR which detects at least a partial volume TV of the filtered exhaust air T, T' in that the filtered exhaust air T, T 'in the area of the chamber K' is subdivided into respective partial volumes to be diverted by means of a plurality of return connections TR (not shown) and these are returned to the space in the area in front of the outlet-side ventilation system 3 ' be provided that each removed from the channel K 'partial volume TV of the exhaust air T, T' are returned directly to the kitchen area (also not shown).

From the in Fig. 11 indicated flow curve shows that the at least a partial volume TV of the exhaust air T 'in a fresh air FL' containing supply line 25 'introduced and then via an outlet 26' - for example, laterally next to the hood 1 '- a mixture of purified exhaust air T' and outside the room supplied fresh air FL 'is returned to the room.

A further optimization of the construction of the extractor hood 1 'envisages that an air distributor 27 can be provided for the transfer of the partial volume TV into the region of the returnable connection TR which can be variably positioned in the system. With this manually or automatically operated or mechanically adjustable air distributor 27 is in the simplest case by appropriate changes or adjustments of passage cross-sections at the input E 'of the return connection TR control or regulation of the size of the respective sub-volume TV possible. In an expedient embodiment, a fan 29 having a controllable electric drive 28 is provided as an air distributor 27.

A conceivable embodiment of the air distributor 27 provides that this is in the form of a fan 29 located above the chamber K (FIG. Fig. 11 ) is carried out, wherein this is applied by means of the partial volume TV receiving connection line to the supply air line 25 '. In the illustrated embodiment, the air distributor 27 is provided above the discharge chamber 12 'as an additional assembly, which can be arranged in the immediate vicinity of the outlet nozzle 2'. Likewise, a coupling to the upper venting system 3 'is conceivable (not shown).

A further embodiment of the system provides that, as the sole or additional air distributor 27 ', an axial fan 29' which can be integrated into the chamber K 'or the diversion chamber 12' is provided ( Fig. 11 , at 13 "; Fig. 15 ). With this fan 29 'takes place a discharge of a partial volume TV', such that this partial volume TV 'can be returned to the vapor receiving chamber 9. Again, a discharge to the outside of the hood 1 "is conceivable (not shown).

This version of the system is in Fig. 15 shown, wherein it is clear that the extractor hood 1 "in the region of its channel K 'starting from an inlet-side filter member 15' the subsequent distribution shaft 11" and then thereafter provided with respective discharge openings 13 'discharge chamber 12' and from this by means of the return connection TR 'opens the partial volume TV' of the exhaust air T, T 'in a transfer chamber 30 with an outlet 31 to the vapor receiving chamber 9 out. In this - on the general return connection TR according to Fig. 11 based version is now the according to FIGS. 12 to 19 clarified air distribution with the additional axial fan 29 'designed so that the in Fig. 15 (With corresponding arrow directions) indicated return of the partial volume TV 'to the surrounding space is possible.

Further constructive improvements are provided in this system of the hood 1 ", which acts in the manner of an air" circuit ", for example, the distribution shaft 11" in the region of its inclined mounting position (angle W ', FIG. Fig. 15 ) provided with a liquid discharge line 32 ', in particular the discharge of condensing water is provided and in the exhaust air T contained oil components are received by the filter part 15 '.

The partial volume TV 'detected in the region of the return connection TR' reaches behind the axial fan 29 'in the region of adjustable closing flaps 33, and after passing through the transfer chamber 30, the partial volume TV' is covered by a cover 34 - with sufficient distance to the intake area of the vapor receiving space 9. delivered into the environment or the room. It can be provided that the cover 34 is provided with additional, the flow direction of the back of the room supplied subvolume TV 'influencing steering components, so that an optimal introduction and mixing of subsets of air volume in the room with the recirculated portion TV' reached becomes.

In constructive developments of the system, it is conceivable that in the region of the hood 1 ', 1 "for receiving respective partial volume TV, TV' also several transfer chambers 30 with corresponding fans 27 'may be provided (not shown) or the hood 1', 1 "in a recirculation position, the exhaust air T is completely returned to the room, with a corresponding closure part (for example, at E '; Fig. 11 ) in the region of the outlet nozzle 2 'is set. Thus, the system can be variably adjustable with a return portion of the sub-volume TV, TV 'from 0% to 100%.

From the representations of the hood 1 "according to FIGS. 12 to 19 It is also clear that other components that can be used to influence the volume of air extracted are used in this compact system are integrated. For example, a special UV tube 35 is provided in the region behind the filter part 15 '. In the region of the diversion chamber 12 'corresponding cover flaps 37, 37' are provided, so that optimum inspection openings ( Fig. 19 ) are reached. In addition, an additional sprinkler 40 is connected to the system in the region of the central lighting means 38.

The construction also provides that for a connectable with this washing system corresponding leads 41 and internal connections 42 are provided. It is understood that the above-described components in the region of the discharge openings 13 'can be provided with automatically controllable flap parts 43.

In Fig. 20 the extractor hood is 1 "similar Fig. 15 shown, with other part names are not registered in favor of the overview. Rather, respective flow lines TR "show a deliberate" internal "deflection of the flow between cover 34 and air inlet 10. This flow TR" results in a negative pressure zone UZ, so that the exhaust air flow AL receives an additional "lead impulse" in the sense of better spatial ventilation, thus the exhaust air AL is additionally raised in a conveying direction FH caused by the negative pressure UZ or the flow TR ", and thus the energy balance with regard to the delivery rate of the system can be improved by up to 30%. Spar hood can be realized, which is increased with little technical effort in their efficiency and thus allows financial savings.

Claims (32)

1. Ventilation arrangement comprising an exhaust hood (1, 1'), in particular in the form of a steam extractor for the kitchen area of ship equipment, and comprising an outlet connecting piece (2, 2') for connecting to a vent system, the exhaust hood (1, 1') comprising a separator (10, 10'), a duct (K, K') and a housing structure which forms, together with an upper cover part (4) and longitudinal-side and transverse-side parts (5, 6, 7, 8) that are each angled away from said top cover part, a vapour-receiving space (9) that is open at the bottom in the installed position, from which vapour-receiving space water-containing and/or grease-containing vapour is received in the duct (K, K') via the separator (10) and forwarded to the outlet connecting piece (2, 2') as substantially cleaned exhaust air (T, T'), characterised in that at least one distribution shaft (11, 11', 11") comprising discharge openings (13, 13', 13") is provided as the duct (K, K') that receives the filtered exhaust air (T, T') and said distribution shaft leads into a discharge chamber (12, 12') which comprises outlet connecting pieces (2, 2'), is integrated in the housing structure at least in regions, and is directly connected to the distribution shaft (11, 11', 11"), the duct (K, K') being provided with a recirculation connection (TR, TR') in the region of the distribution shaft (11, 11', 11") and/or the discharge chamber (12'), which recirculation connection catches at least one partial volume (TV, TV') of the filtered exhaust air (T, T').
2. Ventilation arrangement according to claim 1, characterised in that the discharge chamber (12) is provided with just one outlet connecting piece (2).
3. Ventilation arrangement according to either claim 1 or claim 2, characterised in that the just one discharge chamber (12) interacts with a plurality of distribution shafts (11, 11', 11 ").
4. Ventilation arrangement according to any of claims 1 to 3, characterised in that the discharge chamber (12) and/or the distribution shaft (11, 11', 11") has in each case a spatial structure (R) which forms a plurality of portions.
5. Ventilation arrangement according to any of claims 1 to 4, characterised in that, in the region towards the discharge chamber (12), the at least one distribution shaft (11, 11', 11") is provided with a dividing wall (14) which comprises the discharge openings (13).
6. Ventilation arrangement according to any of claims 1 to 5, characterised in that the distribution shaft (11, 11', 11") or the dividing wall (14) has a variable number of discharge openings (13, 13', 13"), and said discharge openings can be adjusted to various flow cross sections and/or closed, individually or collectively.
7. Ventilation arrangement according to any of claims 1 to 6, characterised in that a plurality of distribution shafts (11, 11', 11") which each comprise outward-facing filter parts (15) as a separator (10) are integrated in the exhaust hood (1, 1'), and the discharge openings (13, 13', 13") of said distribution shafts lead into the discharge chamber (12) opposite one another in each case, which discharge chamber is substantially centrally arranged.
8. Ventilation arrangement according to any of claims 1 to 7, characterised in that a plurality of outlet connecting pieces (2) that can be used selectively or simultaneously are provided in the region of the discharge chamber (12), and/or said outlet connecting pieces are retained, in a preassembled position, in the region of the cover part (4) such that they can move (arrow A, B, C).
9. Ventilation arrangement according to any of claims 1 to 7, characterised in that the exhaust hood (1, 1') which comprises the at least one distribution shaft (11, 11', 11") and the single discharge chamber (12) can be provided as a preassembled unit and can only be connected to the vent system (3) comprising the external suction drive (S) in the region of the single outlet connecting piece (2).
10. Ventilation arrangement according to any of claims 1 to 9, characterised in that the exhaust hood (1, 1') can be adjusted to specifiable suction power levels and/or volumetric air flow rates in the region of the separator (10) and/or the distribution shaft (11, 11', 11").
11. Ventilation arrangement according to any of claims 1 to 10, characterised in that, in the region of the distribution shaft (11, 11', 11") and/or the discharge chamber (12), the exhaust hood (1, 1') is provided with respective adjustment assemblies (16, 16', 16") which influence the flow paths or patterns of the suctioned vapour and/or the forwarded exhaust air (T, T') and are in the form of swivelling flaps and/or slides (18, 18').
12. Ventilation arrangement according to either claim 10 or claim 11, characterised in that the adjustment assemblies (16, 16') can be operated manually and/or by means of a motor drive.
13. Ventilation arrangement according to any of claims 1 to 12, characterised in that the discharge chamber (12) comprises a wall (19) for support with respect to the cover part (4) of the exhaust hood (1, 1'), which support wall is formed in the manner of an intermediate bottom.
14. Ventilation arrangement according to claim 13, characterised in that the discharge chamber (12) is provided with at least one inspection opening in the region of the support wall (19) towards the vapour-receiving space (9) which defines the useful region (Z).
15. Ventilation arrangement according to either claim 13 or claim 14, characterised in that the inspection opening provided in the support wall (19) is provided with a flap (22, 22', 22") which comprises an edge seal (21).
16. Ventilation arrangement according to any of claims 13 to 15, characterised in that, in the region of the support wall (19), the interior of the discharge chamber (12) can be accessed by a plurality of the cleaning flaps (22, 22', 22") being arranged in a row.
17. Ventilation arrangement according to any of claims 13 to 16, characterised in that the cleaning flaps (22, 22', 22") provided in the region of the support wall (19) have a contour (G) that acts in the manner of a collection container in the closed position such that oil and/or water residues separated from the exhaust air (T, T') can be received in said contour.
18. Ventilation arrangement according to any of claims 1 to 17, characterised in that the housing-like structure (1) is provided with at least one supply line (25) which receives fresh air.
19. Ventilation arrangement according to claim 18, characterised in that at least one supply air duct (26) is provided as the supply line (25), which duct extends from the region of the upper cover part (4) to the longitudinal-side or transverse-side part (5, 6, 7, 8).
20. Ventilation arrangement according to either claim 18 or claim 19, characterised in that a plurality of supply lines (25, 25', 25") are provided that extend from the upper cover part (4).
21. Ventilation arrangement according to any of the preceding claims, characterised in that the duct (K') containing the filtered exhaust air (T, T') is provided with a plurality of recirculation connections (TR, TR') each for a partial volume (TV, TV') which is to be diverted therefrom.
22. Ventilation arrangement according to any of the preceding claims, characterised in that the partial volume (TV') of the exhaust air (T, T') removed from the duct (K') can be fed directly back to the kitchen area or a similar space.
23. Ventilation arrangement according to any of the preceding claims, characterised in that at least one of the partial volumes (TV, TV') of the exhaust air (T, T') can be introduced into a supply line (25') containing fresh air (FL').
24. Ventilation arrangement according to any of the preceding claims, characterised in that at least one of the partial volumes (TV, TV') which can be separated from the exhaust air (T, T') by means of the recirculation connection (TR, TR') can be controlled by means of an air distributor (27, 27').
25. Ventilation arrangement according to claim 24, characterised in that a fan (29, 29') which comprises a controllable drive (28) is provided as the air distributor (27, 27').
26. Ventilation arrangement according to either claim 24 or claim 25, characterised in that the air distributor (27) is provided as a fan (29) which is located above the chamber (K') and is in contact with the supply line (25') by means of a connection line (TV).
27. Ventilation arrangement according to either claim 24 or claim 25, characterised in that an axial fan (29') is provided as the air distributor (27'), which axial fan is integrated in the chamber (K') and the outlet of which opens out in the vicinity of the vapour-receiving space (9).
28. Ventilation arrangement according to any of the preceding claims, characterised in that in the region of the duct (K') thereof, the exhaust hood (1") comprises, starting from an inlet-side filter (15'), the subsequent distribution shaft (11') and, adjoining thereto, the discharge chamber (12') provided with respective discharge openings (13'), and the partial volume (TV') of the exhaust air (T, T') leads from said chamber by means of the recirculation connection (TR') into a transfer chamber (30) comprising an outlet (31) towards the vapour-receiving space (9).
29. Ventilation arrangement according to claim 28, characterised in that the distribution shaft (11') comprises a liquid discharge line (32) in the region of the filter part (15') thereof that has an inclined installation position (angle W').
30. Ventilation arrangement according to either claim 28 or claim 29, characterised in that the transfer chamber (30) comprises a cover (34) which influences the flow direction of the fed-back partial volume (TV').
31. Ventilation arrangement according to any of claims 28 to 30, characterised in that the partial volume (TV') can be moved into a plurality of transfer chambers (30).
32. Ventilation arrangement according to any of claims 28 to 31, characterised in that, when the exhaust hood (1', 1") is in a recirculating air position, all of the exhaust air (T, T') can be fed back to the surrounding space.

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