DE102004030672B4 - V-shaped heat exchanger arrangement of a heating air conditioning - Google Patents

Abstract

Heating and air conditioning system, in particular for a vehicle, with an air guide housing (1), a blower (2), a heat exchanger designed as an evaporator (5), an air inlet duct (7) to the evaporator (5), a heating heat exchanger (6), which is located downstream of the evaporator, an air inlet duct (12) to the heating heat exchanger (6), an air outlet duct (8) from the heating heat exchanger (6), an air duct (17) bypassing the heating heat exchanger (6) and various Air outlets (9, 10, 11), where - the air inlet duct (12) to the heating / heat exchanger (6) and the air duct (17) surrounding the heating / heat exchanger (6) are close to one another, so that the air in these two air ducts ( 12, 17) flows essentially in the same direction, - the evaporator (5) and the heating / heat exchanger (6) are arranged in a V-shape to one another in such a way that one of their ends is close to one another, - whereby from the air flow loaded end faces (14, 15) the heat exchanger (5, 6) enclose an angle of 100 ° to 140 °, - with an air mix flap (18) for setting ...

Description

The present invention relates to a heating air conditioning, as used in particular for the air conditioning of motor vehicles. Such a plant usually comprises an air duct housing, in which a fan and at least two heat exchangers are arranged, and which is provided with air flow control means to represent a variety of air flow paths and operating modes can. The air flow control means usually comprise on the inlet side of the air guide housing a fresh air / circulating air selection device, possibly a mixed air flap and various distribution flaps, which make it possible to distribute the air in desired proportions to the different vents in the vehicle interior.

In conventional heating-air conditioning systems, the evaporator is usually arranged substantially vertically, wherein the heating heat exchanger is below the air path bypassing it. Furthermore, the air flows in substantially the same direction through the evaporator as well as the heating heat exchanger, which makes it difficult to arrange a Luftausströmer close to the vehicle end wall.

By this arrangement of the heat exchanger, a very wide horizontal space is necessary, which usually extends in the direction of travel of the vehicle. In many vehicles, especially those where space is to be created for a middle passenger, such an installation space is not present in the middle area of the instrument panel.

Another major disadvantage of such an arrangement is the risk that the precipitated in the evaporator condensate passes partly to the heating heat exchanger and evaporates there.

Another disadvantage of this arrangement is the relatively low position of the heating heat exchanger, which limits the size of its end face, if an acceptable Fußfreiraum for the front passengers is to be ensured.

Furthermore, a large amount of hot air must traverse the cold air path to supply an air vent located above the cold air path (eg the defrost vent). This hot air is usually supplied via channels that reduce the cross section of the cold air path considerably.

Another known component arrangement is in DE 195 40 286 A1 described, in which, the evaporator and the heating heat exchanger are arranged in a V-shape and are located directly at the beginning of a Geblääsespirale.

Despite the many advantages of the necessary space in the horizontal direction, which usually corresponds to the direction of travel, particularly disadvantageous. The dimension of the system is then determined by the addition of the thicknesses of the following components: air supply duct to the evaporator, evaporator, heating heat exchanger, V-shaped space between the two heat exchangers, any additional heat exchanger and the air duct surrounding the heating heat exchanger.

An unfavorable air path in the heating heat exchanger is because of the necessary high partition wall between the two heat exchangers another questionable point in this arrangement.

• – einem erheblich großen Bauraum in der horizontalen Richtung wegen der Addition der Dicken der folgenden Komponenten oder deren Abmessungen: Luftzufuhrkanal zum Verdampfer, Verdampfer, Dicke des Heiz-Wärmetauschers, Abstand zwischen beiden Wärmetauschern, und der den Heiz-Wärmetauscher umgehende Luftkanal.

Another known component arrangement is in the DE 36 199 35 C2 described which suffers from the following disadvantages:

• - A considerable amount of space in the horizontal direction due to the addition of the thicknesses of the following components or their dimensions: air supply duct to the evaporator, evaporator, thickness of the heating heat exchanger, distance between the two heat exchangers, and the heating heat exchanger bypassing the air duct.

Another known component arrangement is in the JP 08-282 245 A described, wherein an evaporator and a heat exchanger are arranged substantially horizontally immediately adjacent to each other, wherein the air flows vertically downwards through the evaporator and vertically upwards through the heating heat exchanger (flows).

By adding the lengths of both heat exchangers, the space in the horizontal direction is considerably large and unimaginable in many vehicles.

In addition, in all three concepts described above, due to the location of the heating heat exchanger, the evaporator can be pulled or replaced only conditionally from the vehicle interior.

From the DE 101 59 364 A1 a heating air conditioning is known in which an air inlet channel to the heating heat exchanger and a heating heat exchanger bypassing the air duct are separated by the heating heat exchanger. From the EP 1 142 734 A2 takes a heating air conditioning in which the evaporator and the heat exchanger are arranged almost parallel and horizontal and not V-shaped to each other. In the JP 2001-158 216 A The evaporator and the heating heat exchanger are also substantially parallel to each other and the air flows through both essentially in the same direction.

There is therefore a need for an optimized heating air conditioning system, in particular for a motor vehicle, wherein the following main criteria are met simultaneously: extraordinary compactness, especially in the horizontal direction, drop flight-free, supplied to the heating heat exchanger air flow, sufficient end face of the heat exchanger in the Substantially without impairment of the foot clearance space of the front passengers, sufficiently in the direction of travel far forward mounted foot vents, sufficiently large cross-section of the cold air flow and the vehicle interior substantially in the horizontal direction exchangeable evaporator ( 5 ).

This object is solved by the features of claims 1-3 and 21. Preferred developments are listed in the dependent claims.

The present invention proposes a heating air conditioning system, in particular for a vehicle, with an air guide housing, a blower, an evaporator, an air inlet channel to the evaporator, a heating heat exchanger, an air inlet channel to the heating heat exchanger, an air outlet channel from the heating heat exchanger, a the air duct adjacent the heating heat exchanger and with different Luftausströmern, wherein the air inlet channel to the heating heat exchanger and the heating heat exchanger bypassing the air duct are close to each other, so that the air flows in both of these air ducts in substantially the same direction. The peculiarity of the invention is that the evaporator and the heating heat exchanger are arranged in such a V-shape to each other that they are close to each other with one of their ends.

The combination of the V-shaped arrangement of the heat exchangers and the closely spaced air ducts for the flow and bypass of the heating heat exchanger creates a very compact heating air conditioning, with its length at a plane passing through the end face of the evaporator, by the addition the length of the evaporator and the connected after him air duct is determined.

Due to the relatively high position of the heating heat exchanger both requirements regarding the size of the end face of the heating heat exchanger and the foot space of the front passengers can be met.

Furthermore, there is the possibility that an air vent is arranged in the further direction in which the air flows through the heating heat exchanger.

It is preferred that the evaporator and the heating heat exchanger are arranged in such a V-shape to each other that they lie with their lower ends close or close to each other.

It is also advantageous that the means for influencing the air flowing through the heating heat exchanger and surrounding air flows consists of a flap which is mounted at the end of a wall portion of the air guide housing, wherein the wall portion between the air inlet channel to the heating heat exchanger and the heating Heat exchanger bypassing air duct runs. This wall section serves to keep the air warming in full-cold operation low.

In order to further reduce the installation space immediately in front of the heating heat exchanger, wherein the air inlet channel to the heating heat exchanger in itself essentially requires no space, the baffle of the air inlet channel to the heating heat exchanger is substantially exclusively of movable air flow control means for influencing the heating heat exchanger formed by flowing and immediate air flows, so that the space occupied by this channel in full-warm operation, essentially, the heating heat exchanger ( 6 ) immediate air channel ( 17 ) in full-cold operation.

According to a preferred embodiment of the invention, the means for influencing the air flowing through the heating heat exchanger and surrounding air flows from one or more flaps covering substantially all acted upon by the air flow end face of the heating heat exchanger in full-cold operation, wherein the body Seen in the direction of air flow lie in front of their respective axes of rotation and their axes of rotation are assigned directly to the heating heat exchanger.

In order to ensure optimum air distribution over the entire end face of the heating heat exchanger, the means for influencing the air flowing through the heating heat exchanger and bypassing flows are formed as at least two one-legged flaps, which rotate substantially non-linearly about their respective axis of rotation wherein the rearmost flap as seen in the direction of air flow ensures the blocking of the air channel bypassing the heating heat exchanger and the second flap mainly serves for the air duct.

Another degree of compactness can be achieved in that the air channel bypassing the heating heat exchanger substantially parallel to the acted upon by the air flow end face of the heating heat exchanger runs.

To avoid a loss of space, it is advantageous that the air inlet channel to the evaporator is directly adjacent to the air outlet channel of the heating heat exchanger, wherein the air flows in the air inlet channel to the evaporator in a first direction and the air in the air outlet duct of the heating heat exchanger in a second that flows in the first direction in substantially the opposite direction. In particular, it is advantageous that these two channels are separated by a wall portion of the air guide housing.

In cases where the heating air conditioning is to be kept particularly narrow in its lower part, the heat exchangers, based on the wall section, arranged substantially vertically symmetrical.

Further, it is preferable that the evaporator and an air filter immediately upstream are arranged in a V-shape to the heating heat exchanger, so that the three components are close to each other with one end thereof.

In particular, for the cases in which the heating heat exchanger is provided with an upper or a lower water tank, it is advantageous that the fan coil is arranged between the connecting tubes of the heating heat exchanger.

In particular, in a heating air conditioner, in which the fan spiral, in a left-hand drive vehicle from the driver's side, runs counterclockwise, it is advantageous that a support tube or a food directly between the fan coil and the air inlet channel to the evaporator is arranged. The food is preferably heated by the heating heat exchanger.

Furthermore, it is advantageous, in particular in vehicles in which a direct and favorable hot air path to the rear of the interior to be ensured that the evaporator or seen in the air flow direction upstream air filter can be at least partially bypassed by an opening in the air inlet channel.

This opening can be locked by a flap or released arbitrarily.

It is particularly advantageous that this flap is assigned to a subregion of the heating heat exchanger which is assigned to the rear passengers in the vehicle, the air bypassing the evaporator flowing through the heating heat exchanger in a first direction and the air flowing through the evaporator flowing through the heating Heat exchanger flows in a second, the first direction substantially opposite direction.

A further advantageous arrangement is characterized in that the evaporator is divided into two areas, so that the air flows through a first portion of the evaporator in a first direction and after a substantially 180 ° deflection the remaining area of the evaporator in a second, the first Direction flows in essentially opposite direction. In this case, in order to assist the separation of water, the fan is preferably located below the first portion of the evaporator, wherein the air flows through the second portion of the evaporator substantially vertically descending, since the condensate mainly forms in the second portion of the evaporator.

In a presently preferred embodiment, the axis of rotation of the fan impeller is located in a substantially vertical plane which vertically intersects the end faces of the heat exchangers acted upon by the air flow. In this embodiment, the optimum arrangement of the two heat exchangers corresponds to an angle of about 65 ° to 95 °, preferably 80 ° between the two acted upon by the air flow end faces of the heat exchanger.

In one embodiment, not shown, the evaporator and the heating heat exchanger are arranged at a distance from one another, wherein an air duct is disposed between the two heating heat exchangers, which is controlled by an air mix door. This air duct serves to charge an air vent, which is directly to the air inlet duct to the evaporator, with cold air

In another very compact but not shown embodiment, the heating-air conditioning on two heating heat exchanger, between which the fan coil is arranged substantially centrally, wherein the end faces of the two heating heat exchangers lie in a plane which is parallel to the axis of rotation of Gebläselaufrads runs. A further compactness is achieved in that the plane in which the end faces of the two heat exchangers are located cuts through the fan spiral or runs in alignment with the fan spiral.

Finally, it is an advantage that the evaporator can be easily replaced without removing the heating air conditioning from the passenger compartment of the vehicle.

Further advantages and features of the present invention will become apparent from the detailed description of the presently preferred embodiments. The description of these forms is to be considered as non-limiting and by way of example only, with reference to the accompanying drawings, in which:

1 shows a schematic sectional view of a preferred embodiment.

2 shows a schematic sectional view of a second preferred embodiment.

3 shows a schematic sectional view of a third preferred embodiment.

4 shows in a schematic sectional view of a fourth preferred embodiment.

5 shows a schematic sectional view of a fifth preferred embodiment.

In 1 is shown in a schematic sectional view of a heating air conditioning system for a motor vehicle. It includes a blower ( 2 ) for the selectable acceleration of fresh and / or circulating air, so that the latter can be treated in the heating air conditioning and then distributed and output in the vehicle interior. In the illustrated embodiment, connects to the fan ( 2 ) an evaporator ( 5 ), which is part of a climate cycle, not shown, and serves to cool the air when needed. Fluidically behind the evaporator ( 5 ) is a heating heat exchanger ( 6 ) of z. B. can be charged with the coolant of the vehicle engine and serves to heat the air, if desired, before it is performed in the vehicle interior.

Generally, the air is over a man-surgeon 9 , a defrost vent 10 , and a foot vent 11 supplied in a controlled manner to the vehicle interior.

In order to be able to set the mixing ratio of warm air and fresh air or cooled air, an air mix door ( 18 ), which can adjust the proportion of respective air, which the heating heat exchanger ( 6 ) or via a bypass channel ( 17 ) passes this.

The heating air conditioning system described so far corresponds to a conventional, known arrangement and allows the usual climatic settings "very cold", "very warm" and "mixed air", in which one of the mixed air damper in one of the two positions shown or in an intermediate position brings.

In contrast to a previously known heating air conditioning, however, it is provided in this embodiment that the evaporator ( 5 ) and the heating heat exchanger ( 6 ) are arranged in such a V-shape to each other that they are close to each other with one of their ends, wherein the acted upon by the air flow end faces ( 14 . 15 ) of the evaporator ( 5 ) and the heating heat exchanger ( 6 ) enclose an angle of about 100 ° to 140 °, preferably 120 °. The air flowing from the evaporator is subject to a change in direction of about 180 °; before going to the air intake duct ( 12 ) of the heating heat exchanger ( 6 ) or to which the heating heat exchanger ( 6 ) immediate air channel ( 17 ).

Furthermore, the evaporator ( 5 ) is arranged substantially horizontally, wherein it is vertically descending through the air. The upper end of the heating heat exchanger ( 6 ) is inclined towards the passenger compartment at an angle of about 30 °.

The fan coil ( 3 ), seen from the driver's side in a left-hand drive vehicle, runs counterclockwise and is above the evaporator ( 5 ), so that between the fan spiral ( 3 ), the air inlet duct ( 7 ) to the evaporator ( 5 ), and the air outlet duct ( 8th ) of the heating heat exchanger ( 6 ) a space is created, the course of a support tube ( 24 ) serves.

The air mix door ( 18 ) is designed as a single leg and is located directly at the upper end of the heating heat exchanger ( 6 ), so that the installation space, seen in the air flow direction immediately before the heating heat exchanger ( 6 ), depending on the location of the air mix door ( 18 ) partially as an air intake duct ( 12 ) to the heating heat exchanger ( 6 ) and partly as a heating heat exchanger ( 6 ) bypassing air duct ( 17 ) is used.

In the full-cold position ( 18 * ), in which the air mix door ( 18 ) against the heating heat exchanger ( 6 ), the entire air duct ( 17 ) to the right of this flap for supplying cold air into the passenger compartment.

In 2 a development is shown, in which also recurring components are provided with corresponding reference numerals and will not be described again in detail. Unlike the in 1 embodiment shown in this embodiment, an additional heat exchanger ( 16 ), wherein the heating ( 6 ) and the additional heat exchanger ( 16 ) are arranged in such a V-shape to each other that they are close to each other with one of their ends, so that the three heat exchangers ( 5 . 6 and 16 ) Are arranged U-shaped. Preferably, the additional heat exchanger ( 16 ) in the Essentially parallel to the evaporator ( 5 ) arranged.

Furthermore, the additional heat exchanger ( 16 ) directly to the fan coil ( 3 ) and the heating heat exchanger ( 6 ).

In addition, an air vent ( 11 ), which is preferably assigned to the front or the rear footwell, between the fan spiral ( 3 ), the air inlet channel ( 7 ) to the evaporator ( 5 ) and the heating heat exchanger ( 6 ) arranged.

The air mixture takes place via two monoskeletal valves ( 19 . 20 ) that rotate substantially non-linearly about each other about their respective axes of rotation, the upper flap ( 20 ) the blocking of the heating heat exchanger ( 6 ) immediate air channel ( 17 ) and the second flap ( 19 ) mainly to the air line.

In 3 is still a development shown, are also provided in the recurring components with corresponding reference numerals and will not be described again in detail. Unlike the in 1 and 2 the embodiments shown, the fan spiral ( 3 ), seen in a left-hand drive vehicle from the driver's side, in a clockwise direction.

The end faces ( 14 . 15 ) of the evaporator ( 5 ) and the heating heat exchanger ( 6 ) include an angle of about 60 ° to 90 °, preferably 75 °.

Furthermore, runs from the fan spiral ( 3 ) leaving air flow substantially parallel to the acted upon by the air flow end face ( 15 ) of the heating heat exchanger ( 6 ). The air outlet duct ( 8th ) of the heating heat exchanger ( 6 ) is immediately adjacent to the fan coil ( 3 ) and to the air inlet duct ( 7 ) to the evaporator ( 5 ) arranged.

The mixture is carried out via a single curved flap ( 18 ' ), which at the end of a Wandungsabschnittes ( 23 ) of the air guide housing ( 1 ), wherein the wall section ( 23 ) between the air inlet duct ( 12 ) to the heating heat exchanger ( 6 ) and the heating heat exchanger ( 6 ) immediate air channel ( 17 ) runs.

With reference to the main direction of the air flow in which the heating heat exchanger ( 6 ) immediate air channel ( 17 ) runs the acted upon by the air flow end face ( 15 ) of the heating heat exchanger ( 6 ) at an angle of about 15 ° to 20 °.

In 4 is still a development shown, are also provided in the recurring components with corresponding reference numerals and will not be described again in detail.

Unlike the in 1 to 3 the embodiments shown, the axis of rotation runs ( 4 ) of the blower impeller ( 21 ) in a substantially vertical plane, which the acted upon by the air flow end faces ( 14 . 15 ) the heat exchanger ( 5 . 6 ) cuts vertically.

The heating heat exchanger ( 6 ) is substantially vertical and is flowed through in the direction of travel.

The air outlet duct ( 8th ) of the heating heat exchanger ( 6 ) is directly to one of the two flat sides ( 3 ' ) of the fan coil ( 3 ) and to the air inlet duct ( 7 ) to the evaporator ( 5 ) arranged.

The end faces ( 14 . 15 ) the heat exchanger ( 5 . 6 ) include an angle of about 60 ° to 90 °, preferably 75 °.

The evaporator ( 5 ) can be easily replaced without removing the heating air conditioning from the passenger compartment of the vehicle, where it can be pulled out against the direction of travel under the heating heat exchanger.

In 5 is still a development shown, are also provided in the recurring components with corresponding reference numerals and will not be described again in detail. Unlike the in 1 to 4 the embodiments shown, the heating heat exchanger ( 6 ) arranged substantially horizontally, wherein the lower end of the evaporator ( 5 ) is inclined towards the passenger compartment at an angle of about 15 °. The Defrostaustritte run side of the fan spiral ( 3 ).

LIST OF REFERENCE NUMBERS

1

Air duct housing

2

fan

3

fan scroll

3 '

Flat side of the fan spiral

4

axis of rotation

5

Heating heat exchanger

6

Evaporator

7

Air inlet duct (to the evaporator)

8th

Air outlet duct (from the heating heat exchanger)

9

air vents

10

air vents

11

air vents

12

Air inlet duct (to the heating heat exchanger)

14

face

15

face

16

Additional heat exchanger

17

The air channel bypassing the heating heat exchanger

14

flap

18

flap

18 '

flap

18 *

flap position

19

flap

20

flap

21

blower

22

wall section

23

wall section

24

support tube

Claims (21)

Heating air conditioning system, in particular for a vehicle, with an air duct housing ( 1 ), a blower ( 2 ), as an evaporator ( 5 ) formed heat exchanger, an air inlet channel ( 7 ) to the evaporator ( 5 ), a heating heat exchanger ( 6 ), which is fluidly behind the evaporator, an air inlet channel ( 12 ) to the heating heat exchanger ( 6 ), an air outlet duct ( 8th ) from the heating heat exchanger ( 6 ), a heating heat exchanger ( 6 ) immediate air channel ( 17 ) as well as different air vents ( 9 . 10 . 11 ), wherein - the air inlet duct ( 12 ) to the heating heat exchanger ( 6 ) and the heating heat exchanger ( 6 ) immediate air duct ( 17 ) are close to each other, so that the air in these two air channels ( 12 . 17 ) flows in substantially the same direction, - the evaporator ( 5 ) and the heating heat exchanger ( 6 ) are arranged in such a V-shape to each other that they are close to each other with one of their ends, - wherein acted upon by the air flow end faces ( 14 . 15 ) the heat exchanger ( 5 . 6 ) include an angle of 100 ° to 140 °, - whereby an air mixing flap ( 18 ) for setting a mixing ratio of warm air and cooled air in a full-cold position ( 18 * ) against the heating heat exchanger ( 6 ) and - the air in the air inlet channel ( 7 ) to the evaporator ( 5 ) flows in a first direction and the air in the air outlet channel ( 8th ) from the heating heat exchanger ( 6 ) flows in a second, the first direction substantially opposite direction. Heating air conditioning system, in particular for a vehicle, with an air duct housing ( 1 ), a blower ( 2 ), as an evaporator ( 5 ) formed heat exchanger, an air inlet channel ( 7 ) to the evaporator ( 5 ), a heating heat exchanger ( 6 ), which is fluidly behind the evaporator, an air inlet channel ( 12 ) to the heating heat exchanger ( 6 ), an air outlet duct ( 8th ) from the heating heat exchanger ( 6 ), a heating heat exchanger ( 6 ) immediate air channel ( 17 ) as well as different air vents ( 9 . 10 . 11 ), wherein - the air inlet duct ( 12 ) to the heating heat exchanger ( 6 ) and the heating heat exchanger ( 6 ) immediate air duct ( 17 ) are close to each other, so that the air in these two air channels ( 12 . 17 ) flows in substantially the same direction, - the evaporator ( 5 ) and the heating heat exchanger ( 6 ) are arranged in such a V-shape to each other that they are close to each other with one of their ends, - wherein acted upon by the air flow end faces ( 14 . 15 ) the heat exchanger ( 5 . 6 ) include an angle of 60 ° to 90 °, with one of a fan spiral ( 3 ) leaving air flow is substantially parallel to the acted upon by the air flow end face of the heating heat exchanger, - wherein the air through the evaporator ( 5 ) flows in a first direction and the air in the air outlet channel ( 8th ) from the heating heat exchanger ( 6 ) flows in a second, the first direction substantially opposite direction. Heating air conditioning system, in particular for a vehicle, with an air duct housing ( 1 ), a blower ( 2 ), as an evaporator ( 5 ) formed heat exchanger, an air inlet channel ( 7 ) to the evaporator ( 5 ), a heating heat exchanger ( 6 ) which is fluidically behind the evaporator, an air inlet channel ( 12 ) to the heating heat exchanger ( 6 ), an air outlet duct ( 8th ) from the heating heat exchanger ( 6 ), a heating heat exchanger ( 6 ) immediate air channel ( 17 ) as well as different air vents ( 9 . 10 . 11 ), wherein - the air inlet duct ( 12 ) to the heating heat exchanger ( 6 ) and the heating heat exchanger ( 6 ) immediate air duct ( 17 ) are close to each other, so that the air in these two air channels ( 12 . 17 ) flows in substantially the same direction, - the evaporator ( 5 ) and the heating heat exchanger ( 6 ) are arranged in such a V-shape to each other that they are close to each other with one of their ends, - wherein acted upon by the air flow end faces ( 14 . 15 ) the heat exchanger ( 5 . 6 ) enclose an angle of 60 ° to 90 ° and - the heating heat exchanger is substantially vertical and flows in a direction of travel of the vehicle and a rotational axis of a Gebläselaufrades ( 21 ) of the blower ( 2 ) extends in a substantially vertical plane, which the acted upon by the air flow end faces ( 14 . 15 ) the heat exchanger ( 5 . 6 ) cuts vertically. Heating air conditioning system according to claim 2, characterized in that a means for influencing the heating heat exchanger ( 6 ) and flowing air streams from a single, preferably curved flap ( 18 ' ), which at one end of a Wandungsabschnittes ( 23 ) of the air guide housing ( 1 ), wherein the wall section ( 23 ) between the air inlet duct ( 12 ) to the heating heat exchanger ( 6 ) and the heating heat exchanger ( 6 ) immediate air channel ( 17 ) runs. Heating air conditioning system according to claim 1, characterized in that a baffle wall of the air inlet channel ( 12 ) to the heating heat exchanger ( 6 ) substantially exclusively from the air flow control flap ( 18 ) is formed, so that the space occupied by the channel in full warm operation, substantially that of the heating heat exchanger ( 6 ) immediate air channel ( 17 ) in full-cold operation. Heating air conditioning system according to claim 3, characterized in that a means for influencing the heating heat exchanger ( 6 ) flowing through and outgoing air flows from several flaps ( 19 . 20 ), which essentially covers the entire area of the air stream ( 15 ) of the heating heat exchanger ( 6 ) cover in full-cold operation, with their bodies are seen in the air flow direction in front of their respective axes of rotation. Heating air conditioning system according to claim 6, characterized in that the plurality of flaps ( 19 . 20 ) are formed einschenklig that rotate substantially non-linear to each other about their respective axes of rotation, with the rearmost in the air flow direction flap ( 20 ) a blockage of the heating heat exchanger ( 6 ) immediate air channel ( 17 ) guaranteed. Heating air conditioning system according to one of claims 1, 2 or 3, characterized in that the heating heat exchanger ( 6 ) immediate air duct ( 17 ) substantially parallel to the end face acted upon by the air flow ( 15 ) of the heating heat exchanger ( 6 ) runs. Heating air conditioning system according to claim 2 or 3, characterized in that the air in the air inlet duct ( 7 ) to the evaporator ( 5 ) flows in a first direction and the air in the air outlet channel ( 8th ) of the heating heat exchanger ( 6 ) flows in a second, the first direction substantially opposite direction. Heating air conditioning system according to claim 2, 3 or 9, characterized in that an air inlet duct ( 7 ) to the evaporator ( 5 ) and the air outlet duct ( 8th ) of the heating heat exchanger ( 6 ) by a wall section ( 22 ) of the air guide housing ( 1 ) are separated. Heating air conditioning system according to one of the preceding claims, characterized in that the evaporator ( 5 ) and an immediately upstream air filter V-shaped to the heating heat exchanger ( 6 ) are arranged so that the three components, each with one of its ends are close together. Heating air conditioning system according to claim 1, characterized in that a support tube ( 24 ) directly between the fan coil ( 3 ) and the air inlet duct ( 7 ) to the evaporator ( 5 ) is arranged. Heating air conditioning system according to one of the preceding claims, characterized in that the evaporator ( 5 ) or the air filter located in front of him in the air flow direction through an opening in the air inlet channel ( 7 ) can be at least partially circumvented. Heating air conditioning system according to claim 13, characterized in that the opening in the air inlet channel ( 7 ) of the evaporator ( 5 ) can be locked by a flap or released arbitrarily. Heating air conditioning system according to claim 14, characterized in that the evaporator ( 5 ) immediate air the heating heat exchanger ( 6 ) flows in a first direction and the the evaporator ( 5 ) passing through the heating heat exchanger ( 6 ) flows in a second, the first direction substantially opposite direction. Heating air conditioning system according to one of the preceding claims, characterized in that the evaporator ( 5 ) is divided into two areas, so that the air a first portion of the evaporator ( 5 ) flows through in a first direction and after a substantially 180 ° deflection the remaining area of the evaporator ( 5 ) flows in a second, the first direction substantially opposite direction. Heating air conditioning system according to claim 16, wherein the air through the second portion of the evaporator ( 5 ) flows substantially vertically descending, wherein the blower ( 2 ) below the first portion of the evaporator ( 5 ) lies. Heating air conditioning system according to claim 1 or 2, characterized in that a rotation axis ( 4 ) of the blower impeller ( 21 ) runs in a substantially vertical plane, which the acted upon by the air flow end faces ( 14 . 15 ) the heat exchanger ( 5 . 6 ) cuts vertically. Heating air conditioning system according to one of the preceding claims, wherein the evaporator ( 5 ) and the heating heat exchanger ( 6 ) are arranged at a distance from each other, characterized in that an air duct the two heat exchangers ( 5 . 6 ), which is controlled by an air mix door. Heating air conditioning system according to claim 19, characterized in that between the evaporator ( 5 ) and the heating heat exchanger ( 6 ) mounted air mixing damper for supplying at least one Luftausströmers with cold air is used. A heating air conditioning system, in particular for a vehicle, with an air guide housing, a fan with a fan spiral and a blower impeller, an evaporator, an air inlet channel to the evaporator, two heat exchangers, between which the fan coil is arranged substantially centrally, an air inlet channel to the two Heating heat exchangers, an air outlet channel from the heating heat exchangers, a heat exchanger bypassing the air duct and different air vents, wherein The air inlet channel to the heating heat exchangers and the air channel bypassing the heating heat exchanger are close to one another, so that the air in these two air channels flows essentially in the same direction, The evaporator and the heating heat exchangers are arranged in such a V-shape relative to one another that they are in close proximity to one another at each of their ends, The air in the air inlet channel to the evaporator flows in a first direction and the air in the air outlet channel flows out of the heating heat exchangers in a second direction substantially opposite to the first direction, - Wherein faces of the two heating heat exchanger lie in a plane which is parallel to the axis of rotation of the Gebläselaufrads and cuts through the fan coil.

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