DE102017107582A1 - Air conditioning of ship cabins - Google Patents

Abstract

The invention relates to an air conditioning system for ship cabins, an air conditioning device (30) and a method for the air conditioning of ship cabins (12). An intake device (12) is provided for sucking in outside air (16), which is guided by means of a fresh air air guide (32) through an outer wall (14) to the air conditioning device (30). The air conditioning device (30) is connected to a central exhaust air discharge (20). The air conditioning device (30) has a first air supply (38) for air (44) from a first inner region (12b) and a second air supply for air (46) from a second inner region (12a) of the cabin (12) , The air conditioning device (30) comprises an air heat exchanger (60) which is connected to exchange heat between a first air flow from the first air supply (38) to the exhaust air discharge and a second air flow from the fresh air air flow ( 32). In this case, the air-conditioning device (30) is designed and connected such that the second air stream is mixed with air from the second air feed and discharged into the second interior region (12a) of the cabin (12).

Description

The invention relates to an air conditioning system for ship cabins, an air conditioning device and a method for the air conditioning of ship cabins.

The air conditioning of ship cabins, in addition to the supply of fresh air and discharge of exhaust air include various measures of air treatment, in particular filtering, temperature control and humidification or dehumidification. On ships with a large number of ship cabins, for example on cruise liners, a central air conditioning device is usually used for air conditioning of the cabins. There, fresh air is sucked in centrally for the entire ship, processed and fed via lines within the ship to the cabins. Exhaust air from a variety of cabins is routed via an exhaust duct to a central delivery point and discharged to the outside of the ship.

In the EP 2 048 449 A2 is an air conditioner, in particular for ships, described with a central air conditioner as an air supply device. Via a central fan, the air passes through a main channel and branching branch channels from there into the various cabins. An air supply device arranged there is designed as an induction device with an electric air heater for heating the cabin and a cooler for cooling and dehumidification.

The EP 0 916 575 A2 describes an air conditioning system for ships for air conditioning in ship cabins. Air from the air conditioner is supplied to the cabins through supply ducts. In each cabin, a control device for the amount of air is provided. An air supply regulator is arranged in the toilet module of the cabin and provided with a cooling device. An exhaust air quantity control device is provided in the area of cabin cabinets.

The WO 1999/058399 describes a ventilation arrangement with an air conditioning unit, a tempering unit and a local air duct system in each individual cabin. An air treatment unit with openings for supply air and exhaust air is arranged on the outside of the outer wall. An air duct extends through the ceiling into the cabin. The temperature control unit includes a fan to provide air, which handles the air exchange in the cabin, but also serves as a circulating fan. The ventilation arrangement may include various means for fresh air supply, spent air exhaust, filtration, dehumidification, heat recovery, annealing, humidification and circulation.

It may be regarded as an object of the invention to provide an air conditioning system, an air conditioning device and a method for air conditioning of ship cabins, with which a comprehensive air conditioning of ship cabins is possible with low structural complexity and space requirements.

The object is achieved by an air conditioning system according to claim 1, an air conditioning device according to claim 6 and a method for air conditioning according to claim 14. Dependent claims relate to advantageous embodiments of the invention.

In the air conditioning system according to the invention and method for air conditioning of ship cabins, the invention provides that outside air is sucked in and fed through a fresh air air duct through an outer wall of the ship to an air conditioning device. Preferably, a separate intake device may be provided for each adjacent to the outer wall of the ship cabin, so that running between the cabins voluminous air ducts for the fresh air-air duct are not necessary.

For the disposal of exhaust air according to the invention a central exhaust air discharge is provided, d. H. a plurality of cabins are connected to discharge exhaust air through the central exhaust air discharge. Preferably, all cabins of the ship or at least all cabins of certain sections of the ship are connected to the same central exhaust air discharge, for example via air ducts.

According to the invention, the cabin comprises at least two interior areas which are at least partly separated from each other and which are connected to one another (for example by doors, passages) but can be regarded as being separated from one another in terms of climate technology. While the second interior region of the cabin is preferably a (larger) main region, the first interior region is preferably a wet cell separated therefrom.

According to the invention, an air conditioning device is provided in or on the ship's cabin, which can serve for air guidance and air conditioning. This is preferably an air conditioner in which at least the fresh air supplied from the outside is treated. It is preferred that the corresponding number of air conditioning devices are provided for the plurality of cabins.

The air conditioning device according to the invention is connected to the central exhaust air discharge, so that it can deliver exhaust air over it. Furthermore, the air conditioning device has a first air supply for air from the first interior area and a second air supply for air from the second interior of the cabin. Finally, the air conditioning device is connected to the fresh air duct. For the connection with the various inlets and outlets may preferably be provided separate air ducts.

According to the invention, the air conditioning device has an air heat exchanger which is connected so that heat can be exchanged between a first and a second air flow. Of these, the first air flow leads from the first air supply for air from the first inner area (wet cell) to the (central) exhaust air discharge. The second air stream comes from the fresh air duct and flows into or through the air conditioning device or at least a portion thereof.

At least heat can be exchanged between the first and the second air stream through the air heat exchanger. The air heat exchanger is preferably flowed through by the first and second air flow in guided flow paths, which are fluidically separated but thermally coupled, so that heat can pass from one air flow into the other air flow. The exchange of heat via the air heat exchanger can be done in different directions depending on the temperature of exhaust air and fresh air. When heating (the exhaust air is warmer than the fresh air), the heat of the exhaust air is used to preheat the fresh air. In cooling mode (fresh air warmer than exhaust air), the fresh air already gives off heat to the exhaust air, so it is already pre-cooled.

The air conditioning device is further configured and connected to mix the second airflow with air from the second air supply (from the second interior, usually the main area of the cabin) and into the second interior (usually the main area) of the cabin. Thus, at the same time air conditioning and circulation of air in the cabin is made possible.

By using a central exhaust air discharge, there is no nuisance caused by a large number of individual exhaust air discharges on the outer wall of each individual cabin. The use of an air heat exchanger has proved to be a particularly simple way for the heat recovery between fresh air and exhaust air. Overall, the described air duct of the air conditioning system and the method according to the invention thus enables a particularly efficient air conditioning of ship cabins.

According to a preferred embodiment of the air conditioning system and the method according to the invention, the second interior region of the cabin is the main region and the first interior region is a wet cell separated therefrom. The wet cell is spaced from the outer wall and separated by an inner wall from a corridor from which a door to the main area of the cabin leaves. The air-conditioning device can be arranged particularly advantageously in the region of the inner wall between the wet cell and the passage. For fresh air supply, an air passage may be provided which extends from the outer wall to the air conditioning device spaced therefrom. This preferred arrangement of the air conditioning device has proved advantageous in several respects. On the one hand, the spatial proximity to the wet cell is favorable in order to dissipate warm and mostly humid air from there over a short distance. On the other hand, the arrangement in or on the inner wall is therefore particularly advantageous because access to the passage from at least parts of the air-conditioning device can thus be provided without having to enter one of the interior areas of the cabin for this purpose. Thus, certain service work, such as changing filters etc., can be carried out without disturbing the passengers. For example. For example, the air-conditioning device may have a cover accessible from the passage, so that access to the air-conditioning device is possible after removing the cover from the passage.

According to one embodiment of the invention, the second air supply is designed as an air channel. The air duct may preferably run on or under the floor of the first and / or the second cabin area of the cabin. Preferably, an inlet is formed in the second interior region (main region) of the cabin, and the air channel extends between the first and second interior regions to the air conditioning device.

According to a development, an air channel is provided for discharging the mixed air flow (second air flow from the fresh air supply, mixed with air from the second air supply) into the second interior region of the cabin. The air duct may preferably extend on or above the ceiling of the first and / or the second interior region of the cabin. Preferably, the air duct is connected to an upper side of the air conditioning device and terminates in one or more air outlets in the second interior area (main area) of the cabin, for example in one or more ceiling outlets.

The air conditioning device proposed according to claim 6 is particularly useful for the above-described air conditioning system and method for air conditioning of ship cabins. Alternatively, it can also be used in differently designed systems and is therefore regarded as an independent aspect of the invention.

The inventive air conditioning device according to claim 6 has a fresh air supply, an exhaust air discharge and a first and second air supply and a supply air discharge. These air inlets or air discharges may be provided at least in part directly as openings on the air conditioning device or as connections to air ducts. As described above, in the preferred use in the air conditioning system according to the invention, the fresh air supply is connected via the air duct with an outside air intake device and the exhaust air discharge with an air duct to a central exhaust air discharge. The supply air discharge is preferably connected via an air channel with the second interior region of the cabin. The first air feed preferably serves to supply air from the first interior region of the cabin and can be provided, for example, as a direct inlet opening on the air conditioning device. The second air supply preferably serves to supply air from the second interior region of the cabin and can be designed as a connection for an air channel extending therefrom.

The air conditioning device according to the invention has an air heat exchanger with which at least heat can be exchanged between a first air flow from the first air feed to the exhaust air discharge and a second air flow from the fresh air feed. The air conditioning device further comprises a mixing region in which the second air stream is mixed with air from the second air supply and discharged via the supply air discharge.

Thus, the air conditioning device allows at least one heat recovery between exhausted exhaust air and supplied fresh air. At the same time it allows a circulation by mixing the second air flow with air from the second air supply.

According to one embodiment of the invention, the air heat exchanger is designed to exchange heat and moisture between the first and the second air flow. This is, for example, possible by the first and the second air stream are guided separated by an at least partially moisture-permeable membrane within the heat exchanger. With the aid of an air heat exchanger, which, in addition to the exchange of heat, also allows the passage of moisture between the air flows passing through it, moisture can pass from a higher moisture content airflow to a lower moisture content airflow. This has particular advantages, for example, when the second air flow (eg fresh air supplied) has a higher moisture content than the first air flow (for example air provided for removal from the first air feed). Then the air heat exchanger can already cause a certain reduction of the moisture content of the fresh air. Even in the reverse case of very dry fresh air, it may be useful if it is moistened by the air heat exchanger.

As an air heat exchanger with the possibility of additional exchange of moisture, a construction is preferred in which the two air streams flow in opposite directions through flat channel segments. In this case, channel segments for the first and the second air flow in the transverse direction can be alternately arranged and separated from one another by thin, flat membranes of, for example, a planar shape.

According to one embodiment of the air conditioning device according to the invention, this has a first fan for conveying the second air flow and a second fan for conveying the supply air. The first and the second blower are arranged in series with each other. Preferably, the first fan promotes in the direction of the second blower. More preferably, the delivery rate of the second blower is greater than the delivery rate of the first blower. Particularly preferably, a connection to the second air supply is provided between the first and the second fan, so that there is a suction from the difference in the delivery rates there. Thus, a mixture of the second air flow (preferably fresh air after passing through the air heat exchanger) with air from the second air supply (preferably from the second interior of the cabin sucked air) take place.

According to one embodiment of the invention, a cooling unit for cooling the mixed air flow from the second air flow and the air from the second air supply may be provided. While in principle different types of cooling units can be used here, a cooling unit is preferred with a heat exchanger with liquid-carrying line sections, which are arranged in the mixed air flow. By means of a suitable cooling liquid can be carried out with the heat exchanger thus formed, a cooling of the mixed air flow and at the same time a dehumidification by condensation.

Preferably, the cooling unit may comprise one or more cooling registers, which are arranged in the air flow. Each cooling register has a plurality of parallel-arranged line sections, wherein the line sections are preferably arranged in a common plane or in a plurality of common parallel planes. Further preferably, the line sections of a cooling register are, for example, connected to each other at the end, so that two or more of the line sections form a continuous line for the cooling liquid. Especially Preferably, all line sections of the cooling register are connected to a common line and fluidly arranged in series. The conduit sections may be held relative to each other by a support to form the cooling register. Preferably, a holder can connect the parallel line sections at least at one end, more preferably the line sections are held against each other at opposite ends.

For a particularly space-saving arrangement of a cooling unit with a high cooling effect, a plurality of cooling coils can be arranged behind one another in the mixed air flow. In this case, the line sections of each cooling register can each be arranged in common planes. The cooling registers are preferably arranged transversely in a region through which the mixed air flow flows. Particularly preferred is an oblique to the flow direction of the mixed air flow arrangement, so that, for example. The planes formed by the cooling registers are arranged parallel to each other and z. B. to the flow direction an angle of 20 to 80 °, preferably 35 to 65 °, more preferably 40 to 60 °.

Further, it is preferred that the cooling unit has liquid-carrying line sections, which are connected and arranged so that they are flowed through by the cooling medium in countercurrent to the mixed air flow.

• 1 eine schematische Darstellung eines Schiffs mit Schiffskabinen und zentraler Abluft-Abführung;
• 2 ein schematischer Grundriss einer Schiffskabine des Schiffs aus 1 mit einer Klimatisierungsvorrichtung;
• 3 in Draufsicht die Klimatisierungsvorrichtung aus 2;
• 4 in perspektivischer Ansicht die Klimatisierungsvorrichtung aus 2, 3;
• 5 in Seitenansicht die Klimatisierungsvorrichtung aus 2 bis 4 ohne Abdeckung;
• 6 eine schematische Darstellung der Funktionsweise der Klimatisierungsvorrichtung;
• 7 in perspektivischer Darstellung einen Luft-Wärmetauscher der Klimatisierungsvorrichtung aus 5;
• 7a eine Längsschnittdarstellung entlang der Linie A.A in 7;
• 8 eine Längsschnittdarstellung eines Teils der Klimatisierungsvorrichtung aus 5 mit einer Kühleinheit;
• 9 eine perspektivische Darstellung der Kühleinheit aus 8.

Embodiments will be described in more detail below with reference to drawings. Showing:

• 1 a schematic representation of a ship with ship cabins and central exhaust air discharge;
• 2 a schematic plan of a ship's cabin of the ship 1 with an air conditioning device;
• 3 in plan view of the air conditioning device 2 ;
• 4 in a perspective view of the air conditioning device 2 . 3 ;
• 5 in side view of the air conditioning device 2 to 4 without cover;
• 6 a schematic representation of the operation of the air conditioning device;
• 7 in a perspective view of an air heat exchanger of the air conditioning device 5 ;
• 7a a longitudinal sectional view along the line AA in 7 ;
• 8th a longitudinal sectional view of a part of the air conditioning device 5 with a cooling unit;
• 9 a perspective view of the cooling unit 8th ,

In 1 is schematically a ship 10 represented with a number of juxtaposed, each identically formed outdoor cabins 12 along an outer sidewall 14 of the ship 10 ,

Schematically, in the following figures, air flows are respectively represented by arrows on different types of lines. Here fresh air drawn in from outside is shown by dotted lines. Outflow discharged to the outside is represented by dashed double-dot lines.

As in 1 fresh air is shown 16 from the outside through the outer wall 14 of the ship 10 the cabins 12 fed. Air from the cabins 12 is about one inside the ship 10 extending air duct 18 to a central exhaust air discharge 20 guided and central for all shown cabins 12 there as exhaust air 22 delivered to the outside.

2 shows the floor plan of a cabin 12 within a series of identically designed cabins along the outer wall 14 all from one longitudinal direction of the ship 10 running gear 24 are accessible from. Above the aisle 24 runs the exhaust air duct 18 to the central exhaust air discharge 20 (in 2 not shown).

Every cabin 12 includes a main area 12a and a wet cell separated therefrom 12b , The wet cell 12b is inside the ship 10 at a distance from the outer wall 14 arranged and through an inner wall 26 from the corridor 24 separated. In the inner wall 26 between the wet room 12b the cabin 12 and the gang 24 is an air conditioning device 30 arranged, which will be described in more detail below.

Outside at the ship 10 is a suction device 28 for outside air 16 intended. This is done by a running above the cabin ceiling air duct 32 as a fresh air duct of the air conditioning device 30 at a fresh air connection 34 supplied (dotted lines).

The air conditioning device 30 is via an exhaust air connection 36 with the air duct 18 to the central exhaust air discharge 20 connected to exhaust air over this (dash-colon line).

air 44 from the wet room 12b (shown as a dashed line) is via a first air supply 38 directly on the air conditioning device 30 this supplied. From the main area 12a the cabin 12 becomes secondary air 46 (shown with a solid line) also the air conditioning device 30 fed, preferably through a bottom inlet and below the bottom of the main area 12a into the wet room 12b extending air duct to the air conditioning device 30 (not shown).

The air conditioning device 30 gives air 48 (shown as a dotted line) in the main area 12a the cabin 12 off through a connection 40 and connected air duct 42 in the ceiling, by the wet room 12b in the main area 12a leads and there in a ceiling outlet (not shown) opens. At the released air 48 these are, as explained below, secondary air mixed with fresh air.

As shown, the air conditioning device 30 inside the inner wall 26 So, between the gait 24 and the wet room 12b arranged, so can air 44 from the wet room 12b directly over the inlet 38 the air conditioning device 30 be sucked off.

At the same time, the in 4 Front shown on the back 50 the air conditioning device from the aisle 24 accessible (at least after removal of a cover, which is not shown here). So especially from the gear 24 from the back 50 the air conditioning device 30 arranged flap 52 ( 4 ) to an underlying filter 58 (S. 6 ).

5 shows a side view of the air conditioning device 30 with removed back cover. The components of the air conditioning device 30 as well as the air flows in between are also in the diagram 6 once again shown schematically.

As in 5 . 6 shown has the air conditioning device 30 in addition to the air inlets and outlets 34, 36, 38, 40, 46 via a (in 5 behind the flap 52 hidden) filter 58 , an air heat exchanger 60 , a first blower 62 one refrigeration unit is 64, a second fan 66 and an electric heater 68 , These are housed in a housing that looks like 5 is separated by a middle wall into two separate chambers. The chambers are closed on all sides except for the illustrated inlets and outlets.

In the in 5 right chamber is shown an air flow from top to bottom. How out 5 . 6 Air becomes visible 44 from the wet room 12b (dashed line) through the first air supply 38 sucked and as the first air flow through the air heat exchanger 60 guided. The first air flow is after passing through the air heat exchanger 60 as exhaust air 22 (Colon dashed line) through the exhaust connection 36 dissipated.

fresh air 16 (dotted line) is through the fresh air connection 34 first through the filter 58 guided. By means of the filter 58 Dust and suspended particles are released from the air stream 34 deposited. The filter stops 58 also salt from the air stream 34 back.

The filtered fresh air is as a second air flow through the air heat exchanger 60 guided. After passing through the air heat exchanger 60 the supply air is through the first blower 62 from the right chamber to an in 5 conveyed mixing chamber on the left, where they communicate with secondary air 46 from the main area 12a the cabin 12 mixed.

The mixed air flow is in the left chamber from bottom to top through the cooling unit 64 led and cooled there and dehumidified by condensation. Subsequently, the thus cooled and dehumidified air flow through the second blower 66 further promoted, if necessary by the heater 68 heated and through the connection 40 as supply air 48 in the main area 12a the cabin 12 issued.

By means of the air heat exchanger 60 who in 7 . 7a is shown in more detail, is between the first and second air flow, the heat exchanger 60 cross in opposite directions, both heat and moisture exchanged. As can be seen from the drawings, the air heat exchanger has 60 in the transverse direction juxtaposed flat chambers 72a . 72b on, each with first chambers 72a from the first airflow and second chambers 72b to be flowed through in opposite directions from the second air flow. The first and second chambers 72a . 72b are arranged alternately and in each case by thin membranes 74 separated so that between the first and the second air flow heat exchange as well as passage of moisture through the membrane 74 also a moisture exchange takes place.

8th . 9 show the cooling device 64 , As can be seen from the drawings, it is a liquid cooling with parallel pipe sections 76 , which run transversely to the air flow direction shown (dot-dashed arrow). The pipe sections 76 are in pairs like in particular 9 can be seen at the end by U-pieces 78 coupled, so that they are all fluidly arranged in series and thus form a continuous line through which flows a cooling liquid.

Here are how out 8th . 9 the line sections can be seen 76 at both ends by holding plates 80 fixed so that they have two separate cooling registers 82 . 84 form. Each cooling coil 82 . 84 has line sections arranged in two parallel planes 76 on.

The cooling registers 82 . 84 are how out 8th can be seen, arranged parallel to each other, so that they are flowed through successively by the air flow.

In order to enable efficient cooling with a small size, the cooling coils are 82 . 84 while obliquely within the through the wall of the air conditioning device 30 guided air flow, in the example shown at an angle of about 40 ° to the vertical.

Below the cooling register 82 . 84 has the cooling device 64 a condensate collecting channel 88 on, is collected in the condensing moisture and removed.

In operation of the air conditioning device 30 become the blowers 62 . 66 operated to promote the air flow in the direction shown in each case. The pipe sections 76 the cooling device 64 are traversed by coolant at a temperature of, for example, 6 ° C.

How out 5 . 6 The first blower is visible 62 and second blower 66 connected in series. The second fan 66 has a higher delivery rate than the first blower 62 , This results in a suction in the mixing chamber 70 through which the secondary air 46 from the main area 12a the cabin 12 is sucked.

In cooling (ie in warm, mostly humid outside air 16 from, for example, 30 ° C) and at a desired internal temperature of, for example, 22 ° C within the main area 12a the cabin 12 This gives the following function:

While the outside air 16 through the blower 62 is sucked in, due to a suction in the central exhaust duct 18 air 44 from the wet room 12b sucked in and as exhaust air 22 issued. There is the warm, humid supply air 16 Heat and part of the moisture contained within the air heat exchanger 60 to the exhaust air 22 so it is cooled and dehumidified.

After mixing with the secondary air 46 from the main area 12a the cabin 12 is the mixed air flow through the cooling device 64 cooled to a temperature of, for example. 16 ° C, so that most of the moisture contained condenses. By the heater 68 the dehumidified mixed air stream is heated to the desired internal temperature of, for example. 22 ° C and through the connection 48 in the main area 12a the cabin 12 issued.

In an exemplary heating case is outside air 16 aspirated with, for example, 5 ° C and low humidity. Through the air heat exchanger 60 is the supply air 16 by heat from the exhaust air stream 44 . 22 preheated. At the same time, the fresh air 16 moistened. If no dehumidification is necessary, the cooling device must 64 not be operated in the heating case. The mixed airflow is then passed through the heater 68 heated to the desired temperature and over the connection 40 in the interior 12a issued.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 2048449 A2 [0003]
• EP 0916575 A2 [0004]
• WO 1999/058399 [0005]

Claims (14)

Air conditioning device for ship cabins (12), with an intake device (28) for outside air (16) and a fresh air supply (32, 34) through an outer wall (14) to an air-conditioning device (30), - wherein the air conditioning device (30) is connected to a central exhaust air discharge (20) and a first air supply (38) for air from a first inner region (12b) and a second air supply for air from a second inner region (12a ) of the cabin (12), - and wherein the air conditioning device (30) comprises an air heat exchanger (60) which is connected so that heat is exchanged between a first air flow from the first air supply (38) for exhaust air discharge and a second air flow from the fresh air Feeder (34), - And wherein the air conditioning device is designed and connected so that the second air flow mixed with air (46) from the second air supply and in the second inner region (12 a) of the cabin (12) is discharged. Air conditioning system according to Claim 1 in which - the second inner region (12a) of the cabin (12) is a main region and the first inner region (12b) of the cabin (12) is a wet cell separated therefrom, - the wet cell (12b) being at a distance from the outer wall (14) arranged and separated by an inner wall (26) from a passage (24), from which a door to the main area (12a) of the cabin (12) goes off, - wherein the air conditioning device (30) is arranged in the region of the inner wall (26) between the wet cell (12b) and the passage (24), - and being provided as a fresh air supply, an air channel (32) from the outer wall (14) to the air conditioning device (30). Air conditioning system according to Claim 2 in which - the air-conditioning device (30) has a detachable cover for service work accessible from the passage (24). Air conditioning system according to one of the preceding claims, in which - The second air supply is formed as an air passage at or below the bottom of the first and / or the second inner region (12a, 12b) of the cabin (12). Air conditioning system according to one of the preceding claims, in which upon discharge of the mixed air flow (48) into the second interior region (12a), an air duct (42) from an upper side of the air conditioning device (30) at or above the ceiling of the first and / or the second interior region (12a, 12b) of the cabin (12) 12) is provided. Air conditioning device, in particular for an air conditioning system according to one of the preceding claims, with - A fresh air supply (34) and an exhaust air discharge (36), as well - A first and second air supply (38) and a supply air discharge (40), - and an air heat exchanger (60) for heat exchange between a first air flow from the first air supply (38) to the exhaust air discharge (36) and a second air flow from the fresh air supply (34), - And a mixing region (70), in which the second air flow with air from the second air supply for delivery via the supply air discharge (40) is mixed. Air conditioning device according to Claim 6 in which - the air heat exchanger (60) is adapted to exchange heat and moisture between the first and second air streams. Air conditioning device according to one of Claims 6 . 7 in which - a first blower (62) for conveying the second air flow and a second blower (66) for conveying the supply air are arranged in series with each other, - wherein the delivery rate of the second blower (66) is greater than the delivery rate of the first blower (62). Air conditioning device according to one of Claims 6 to 8th in which - a cooling unit (64) for cooling the mixed air flow from the second air stream and the air (46) from the second air supply is provided. Air conditioning device according to Claim 9 in which - the cooling unit (64) has liquid-carrying line sections (76) which are arranged in the mixed air flow. Air conditioning device according to Claim 10 in which - the cooling unit (64) has at least one cooling coil (82, 84) with a plurality of parallelly arranged line sections (76), - wherein the line sections (76) are connected to at least one continuous line, and wherein the line sections (76) are held by a holder (80) relative to each other. Air conditioning device according to Claim 11 , in the - a first and a second cooling register (82, 84) are arranged behind one another in the mixed air flow, - wherein the cooling registers (82, 84) are arranged transversely in a region through which the mixed air flow flows. Air conditioning device according to one of Claims 9 to 12 in which - the cooling unit (64) has liquid-carrying pipe sections (76) which are connected and connected in such a way that they are flowed through in countercurrent to the mixing air flow by a cooling liquid. Method for air conditioning of ship cabins, in which - a first air flow from a first inner region (12b) of a cabin (12) is supplied to an air conditioning device (30) and is discharged centrally to the outside through a central exhaust air discharge (20), - wherein the air conditioning device (30) secondary air (46) from a second inner region (12 a) of the cabin (12) is supplied, sucked in and outside air (16) and supplied through a fresh air duct (32) through an outer wall (14) as a second air stream of the air conditioning device (30), wherein heat is exchanged between the first air flow and the second air flow through an air heat exchanger (60), - And wherein the secondary air (46) from the second interior region (12a) of the cabin (12) mixed with the second air stream and in the second interior region (12a) of the cabin (12) is discharged.

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