Air conditioning device for motor vehicle

Abstract

The present invention relates to an air-conditioning device for a motor vehicle, wherein the housing has at least two independent air passages, which are arranged in the housing and separated from each other by means of at least one partition wall; a cooling heat exchanger is arranged in the housing so that air can flow through the cooling heat exchanger and the air can flow into the at least two independent air passages; a heating heat exchanger is provided, and the heating heat exchanger is arranged in the housing so that the heating heat exchanger extends into the at least two independent air passages and the air of the at least two independent air passages can flow through the heating heat exchanger, the heating heat exchanger is an electrically driven heat exchanger, and the heat exchanger is designed with multiple heat exchanger sections that can be heated independently, so that the air flowing through a heat exchanger section can be heated independently, each independent air passage is provided with at least one heat exchanger section, and at least one heat exchanger section is arranged in the corresponding independent air passage.

Description

Technical Field

[0001] The present invention relates to an air-conditioning device for a motor vehicle. Background Art

[0002] The air conditioning device of a motor vehicle has a housing with at least one air duct and a flap and a heat exchanger arranged therein. Single-zone air conditioning devices and multi-zone air conditioning devices are known herein.

[0003] Single-zone air conditioning systems generate a generally uniform air flow at a substantially uniform temperature within the air ducts within the unit's housing. This uniform air flow is temperature-controlled by flowing through an evaporator and / or heating element. The air flow is then distributed to air outlets in the vehicle, from which air of substantially uniform temperature flows. Passengers can only preselect a temperature, with air flaps controlling the flow through the evaporator and / or heating element to adjust the air or room temperature to a predetermined temperature value. Since the predetermined temperature value can be set, the hot and cold air flaps provided for temperature control can be adjusted.

[0004] A multi-zone air conditioning system has multiple air ducts arranged independently of one another in a housing. The number of these air ducts depends on the number of zones in the vehicle interior to be supplied. A dual-zone air conditioning system has two independent air ducts, each with its own independent air flow and temperature-controlled. The independent air ducts are created by partitions arranged in the housing. The respective temperature-controlled air flows are conditioned by flowing through a portion of the evaporator and / or a portion of the heating element. The air flows are then distributed to air outlets in the corresponding zones of the vehicle, from which air of substantially the same temperature flows into the corresponding zones of the interior. Passengers can preselect a temperature for each zone. Cool and hot air flaps in the corresponding air ducts control the flow through the corresponding portion of the evaporator and / or heating element to adjust the air temperature to a predetermined temperature value. Since the temperature values ​​can be set individually, the air flaps provided for temperature control are adjusted accordingly. In a dual-zone system, a hot and cool air flap are provided for each of the two air ducts. Compared to a single-zone air conditioner, the number of required cold air flaps and hot air flaps, as well as the number of servo motors required for the flaps, increases accordingly due to the partitioning of the air conditioner. Therefore, a two-zone air conditioner requires twice as many flaps and servo motors as a single-zone unit. A three-zone air conditioner regulates the temperature of three air streams using three air channels, requiring three times as many flaps and servo motors as a single-zone unit. A four-zone air conditioner regulates the temperature of four air streams using four air channels, requiring four times as many flaps and servo motors as a single-zone unit.

[0005] Therefore, the production of a multi-zone air conditioning system requires a significantly greater number of components, in particular a greater number of flaps and servomotors, than the production of a single-zone air conditioning system, which significantly increases costs. This also increases the complexity and assembly effort. Summary of the Invention

[0006] It is therefore an object of the present invention to provide a multi-zone air-conditioning device which allows independent temperature control of a plurality of air flows, wherein the costs and assembly outlay are reduced compared to the prior art.

[0007] This object is achieved by the following features.

[0008] An embodiment of the present invention relates to an air conditioning system for a motor vehicle, the air conditioning system comprising a housing having at least two independent air passages formed therein, the air passages being arranged in the housing and separated from each other by at least one partition wall. A cooling heat exchanger is arranged in the housing so that air can flow through the cooling heat exchanger and into the at least two independent air passages. A heating heat exchanger is provided in the housing so that the heating heat exchanger extends into the at least two independent air passages and air from the at least two independent air passages can flow through the heating heat exchanger. The heating heat exchanger is an electrically drivable heat exchanger having a plurality of independently heatable heat exchanger sections, thereby independently heating air flowing through each heat exchanger section. Each independent air passage is provided with at least one heat exchanger section, the at least one heat exchanger section being arranged in the corresponding independent air passage. Thus, the air in each independent air passage can be heated independently of one another, thereby enabling the temperature of the air in each independent air passage to be individually adjusted. This results in a simplified air conditioning system that can dispense with a heating element for heating the air by passing a cooling fluid through it, simplifying the design. Corresponding hot air flaps in the air duct can also be dispensed with, which also simplifies the design. Since the electrically drivable and controllable heat exchanger can vary its heating capacity very quickly, instead of the hot air flaps, it is sufficient to selectively control the heating capacity of the heating heat exchanger in the corresponding heat exchanger section. Overall, a simplified and therefore cost-effective air conditioning system for at least two zones of a motor vehicle is achieved, in which the air flowing into these zones can be independently temperature-controlled and controlled.

[0009] The air conditioning device according to the present invention is advantageously characterized by the provision of only one electrically drivable heat exchanger for heating the air in the housing of the air conditioning device. This eliminates the need for a heating heat exchanger through which a fluid, such as a coolant, flows for heating purposes. The proposed heating heat exchanger is preferably an electrically drivable heat exchanger that is designed with multiple independently heatable heat exchanger sections. This allows the heating power of the respective heat exchanger sections to be controlled independently of one another, so that each heat exchanger section can heat the air flowing through it in an independently and individually controllable manner.

[0010] In another embodiment, the heating heat exchanger advantageously intervenes in the respective independent air channels in such a way that a cooling air channel is provided in each of the respective air channels, which guides air around the heating heat exchanger. The heating heat exchanger (also generally referred to as a heating element) thus only partially projects into the respective independent air channels, allowing air to flow through the heat exchanger and / or around it. The portion of the air flow in the respective air channel that bypasses the heating heat exchanger is not heated. The portion of the air flow in the respective air channel that flows through the heating heat exchanger can be heated depending on the controlled heating power, or can also be unheated, for example, when the heating power is not controlled.

[0011] In an advantageous embodiment, each cold air duct is conveniently assigned a cold air flap, which can be used to open or close the corresponding cold air duct. The corresponding cold air flap can also be adjusted between a fully open position and a fully closed position, so that the amount of air passing through the cold air duct can be controlled by adjusting the cold air flap. Thus, the corresponding cold air flap can be adjusted between a fully open position and a fully closed position to adjust the air flow through the assigned cold air duct. Optionally, each cold air flap can be adjusted independently, and for this purpose, an actuator, such as an electric motor, is advantageously provided.

[0012] It is also advantageous if each air channel is assigned at least one air outlet downstream of the heating heat exchanger. Thus, each air channel can, for example, be assigned a single air outlet or one or more air channels can also be assigned a greater number of air outlets, for example two, three, four or more air outlets.

[0013] Such air outlets may be, for example, defroster vents, front vents, rear vents, front footwells, rear footwells, etc.

[0014] For example, one air channel may be assigned with a defroster vent, air outlets for the front vents, and air outlets for the front footwells. Another air channel may be assigned with an air outlet for the rear vents and air outlets for the rear footwells. Another air channel may be assigned with a defroster vent, air outlets for the front and rear vents, and air outlets for the front and rear footwells.

[0015] In an exemplary embodiment, it is also advantageous if the air conditioning system is a dual-zone air conditioning system having at least two air ducts, wherein each of the two air ducts is assigned with at least one air outlet to a zone in the interior of the motor vehicle. For example, in a dual-zone air conditioning system, the first zone can be defined as the vehicle interior on the driver's side, and the second zone can be defined as the area on the passenger side.

[0016] In another advantageous embodiment, it is also convenient for the air conditioning system to be a three-zone air conditioning system having at least three air ducts, wherein each of these three air ducts is assigned with at least one air outlet to a zone in the motor vehicle interior. For example, in a three-zone air conditioning system, the first zone can be defined as the front portion of the vehicle interior on the driver's side, and the second zone as the front portion of the vehicle interior on the passenger side. The third zone can be the rear portion of the vehicle interior.

[0017] In another advantageous embodiment, it is also convenient for the air conditioning system to be a four-zone air conditioning system having at least four air ducts, wherein each of the four air ducts is assigned with at least one air outlet to a zone in the motor vehicle interior. For example, in a four-zone air conditioning system, the first zone can be defined as the front portion of the vehicle interior on the driver's side, and the second zone as the front portion of the vehicle interior on the passenger side. The third zone can be the rear portion of the vehicle interior on the driver's side, and the fourth zone can be the rear portion of the vehicle interior on the passenger side.

[0018] It is also advantageous if two air ducts are assigned to the area of ​​the motor vehicle interior arranged in the front section of the vehicle interior, and in the case of a three-zone air conditioning system, one air duct, or in the case of a four-zone air conditioning system, two air ducts are assigned to the area of ​​the motor vehicle interior arranged in the rear section of the vehicle interior. This allows for an appropriate distribution of the air flows.

[0019] Particularly preferably, the cross section of the air ducts for the front section is equal to or greater than the cross section of the air duct or air ducts for the rear section.

[0020] It is also advantageous if at least one partition wall has at least one opening downstream of the heating heat exchanger, wherein the respective opening is assigned a flap that can be used to open or close the opening. This allows for coupling of independent air channels in certain operating situations by allowing the opening to be opened using the flap. If the opening is closed again using the flap, the air channels are separated again. Thus, for example, a front air channel can be connected to or separated from one or more rear air channels.

[0021] It is also advantageous to provide at least one additional bypass channel, in particular in each air channel, which bypasses the cooling heat exchanger, wherein a bypass flap is optionally provided in each of the respective additional bypass channels for controlling the flow rate through the at least one additional bypass channel. This makes it possible to reduce the flow resistance in certain operating modes.

[0022] Advantageous developments of the invention are described in the dependent claims and in the following description of the figures. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be described in detail below with reference to the accompanying drawings using embodiments. In the accompanying drawings:

[0024] Figure 1 A schematic cross-sectional view showing an air conditioning apparatus as a four-zone air conditioning apparatus according to a first embodiment of the present invention,

[0025] Figure 2 A front view showing a heat exchanger for heating (such as a heating body),

[0026] Figure 3 A schematic cross-sectional view showing an air conditioning apparatus as a four-zone air conditioning apparatus in a first operating mode according to a first embodiment of the present invention,

[0027] Figure 4 shows a front view of a heating heat exchanger (such as a heating body) in a first operating mode,

[0028] Figure 5 A schematic cross-sectional view showing an air conditioning apparatus as a four-zone air conditioning apparatus in a second operating mode according to a first embodiment of the present invention,

[0029] Figure 6 A front view showing a heating heat exchanger (eg, a heating element) in a second operating mode,

[0030] Figure 7 A schematic cross-sectional view showing an air conditioning apparatus as a four-zone air conditioning apparatus in a third operating mode according to the first embodiment of the present invention,

[0031] Figure 8 A front view showing a heating heat exchanger (eg, a heating element) in a third operating mode,

[0032] Figure 9 A schematic cross-sectional view showing an air conditioning apparatus as a four-zone air conditioning apparatus in a fourth operating mode according to the first embodiment of the present invention,

[0033] Figure 10 shows a front view of a heating heat exchanger (such as a heating body) in a fourth operating mode,

[0034] Figure 11 A schematic cross-sectional view showing the air conditioning apparatus as a four-zone air conditioning apparatus in the fifth operating mode according to the first embodiment of the present invention,

[0035] Figure 12 A front view showing a heating heat exchanger (eg, a heating element) in a fifth operating mode,

[0036] Figure 13 A schematic diagram is shown for explaining the functionality of the flap coupling,

[0037] Figure 14 A schematic cross-sectional view showing an air conditioning apparatus as a three-zone air conditioning apparatus according to a second embodiment of the present invention,

[0038] Figure 15 Show the basis Figure 14 A front view of a heating heat exchanger (such as a heating body) for heating,

[0039] Figure 16 A schematic cross-sectional view showing an air conditioning apparatus as a dual-zone air conditioning apparatus according to a third embodiment of the present invention,

[0040] Figure 17 Show the basis Figure 16 A front view of a heating heat exchanger (such as a heating body) for heating,

[0041] Figure 18 A schematic cross-sectional view showing an air conditioning apparatus as a single-zone air conditioning apparatus according to a fourth embodiment of the present invention, and

[0042] Figure 19 Show the basis Figure 18 A front view of a heating heat exchanger (such as a heating body) for heating. DETAILED DESCRIPTION

[0043] Figure 1 An air-conditioning device 1 according to the invention for a motor vehicle is shown in a schematic sectional view.

[0044] The air conditioning device 1 has a housing 2 having an air passage 3 formed therein. The air passage 3 is formed in the housing 2 through a partition wall 4 (see also Figure 2 ) are designed and divided in a manner that they are separated from each other so that air can flow through these air channels independently of each other.

[0045] Here, the housing 2 can be designed to have at least two independent air channels 3, however, more or fewer independent air channels 3 can also be provided. Thus, in this example, only one air channel 3 can be provided, and in other embodiments, three or four independent air channels 3 can also be provided. Here, the corresponding partition wall 4 or the corresponding plurality of partition walls 4 can be modularly designed in the housing 2 and can be correspondingly inserted into the housing 2 when the housing 2 is assembled to achieve the corresponding desired area of ​​the air conditioning device 1.

[0046] Here, the air ducts 3 of the dual-zone air conditioning system 1 can also be operated so that they are coherently treated and controlled, effectively creating a single-zone air conditioning system 1. In principle, this can also be provided in other air conditioning systems, so that an air conditioning system with fewer zones can be created by coherently treating and controlling an air conditioning system with more zones.

[0047] The air conditioning device is provided with a cooling heat exchanger 5, such as an evaporator, which is arranged in the housing 2 so that air 6 can flow through the cooling heat exchanger and into the at least two independent air channels 3. Here, the cooling heat exchanger 5 can be arranged upstream of the independent air channels 3 and occupy the entire cross-section of the housing 2 in this area, so that the air 6 flowing through the cooling heat exchanger 5 is distributed to these independent air channels 3.

[0048] Alternatively, the independent air channels 3 can also be divided upstream of the cooling heat exchanger 5 , so that the cooling heat exchanger 5 already intervenes in the independent air channels 3 .

[0049] In addition, a heating heat exchanger 7 (for example, also called a heating body) is provided, which is arranged in the housing 2 so that the heating heat exchanger extends into the at least two independent air channels 3 and the air 6 in the at least two independent air channels 3 can flow through the heating heat exchanger 7.

[0050] exist Figure 1 and Figure 2 The embodiment of the present invention shows a four-zone air conditioning device 1 with four independent air channels 3. The heating heat exchanger 7 is correspondingly inserted into the four independent air channels 3, as can be seen from the Figure 2 see.

[0051] According to the design solution of the present invention, the heating heat exchanger 7 is an electrically drivable heat exchanger 7 , which can be heated by feeding electric energy to heat the air 6 flowing through it.

[0052] The heating heat exchanger 7 is designed to have multiple independently heatable heat exchanger sections 8. This allows the air 6 flowing through each heat exchanger section 8 to be heated independently. Thus, the air 6 flowing through one heat exchanger section 8 can be heated more, less, or not heated at all compared to the air 6 flowing through another heat exchanger section 8. Advantageously, the heating power in the respective heat exchanger sections 8 can be individually adjusted or controlled.

[0053] According to this embodiment, at least one heat exchanger section 8 is provided for each individual air channel 3 , which is arranged in the respective individual air channel 3 .

[0054] Here, the design and arrangement of the heating heat exchanger 7 are as follows: only one heating heat exchanger 7 is provided (this heating heat exchanger is an electrically driven heat exchanger 7), and this heating heat exchanger is designed with multiple independently heatable heat exchanger sections 8. There is no heat exchanger provided as a heating body through which the fluid flows.

[0055] Furthermore, it is proposed that the heating heat exchanger 7 is arranged in the housing 2 in such a way that it intervenes in the respective independent air ducts 3 in such a way that a cooling air duct 9 is provided in each of the respective air ducts 3 , which guides the air around the heating heat exchanger 7 .

[0056] In order to control the air flow through the cold air duct 9, a cold air flap 10 is provided for each cold air duct 9. The flow rate through the cold air duct 9 can be controlled or adjusted by means of the corresponding cold air flap 10 assigned to the cold air duct 9. Here, the corresponding cold air flap 10 can be manipulated by means of an actuator so that the cold air flap 10 can open or close the corresponding cold air duct 9, or the cold air flap 10 can be adjusted to a certain intermediate position so that the cold air duct 9 is partially opened or closed. The cold air duct 9 can be opened or closed or adjusted to an intermediate position by means of the cold air flap 10. In this way, the ratio of air flowing through the heating heat exchanger 7 and the ratio of air flowing around the heating heat exchanger 7 are adjusted. Here, the air flowing around the heat exchanger 7 is mixed with the air flowing through the heat exchanger 7 after the heat exchanger 7, so that the air is mixed downstream of the heating heat exchanger 7.

[0057] For example, if the heat exchanger section 8 of the heat exchanger 7 is not heated, cold air flows through the heat exchanger 7 in the heat exchanger section 8, passes through the heating heat exchanger 7, and downstream of the heat exchanger 7 mixes with cold air flowing around the heat exchanger 7. Thus, cold air is obtained.

[0058] For example, if the heat exchanger section 8 of the heat exchanger 7 is only slightly heated, the air flowing through the heat exchanger 7 in the heat exchanger section 8 is heated by the heating heat exchanger 7 and mixed downstream of the heat exchanger 7 with the cold air flowing around the heat exchanger 7. This results in slightly heated air.

[0059] For example, if the heat exchanger section 8 of the heat exchanger 7 is heated to the maximum temperature, the air flowing through the heat exchanger 7 in the heat exchanger section 8 is greatly heated by the heat exchanger 7 and is mixed with the cold air flowing around the heat exchanger 7 in a throttled or metered manner downstream of the heat exchanger 7. Thus, moderately heated air is obtained.

[0060] For example, if the heat exchanger section 8 of the heat exchanger 7 is heated to the maximum extent, the air flows through the heat exchanger 7 in the heat exchanger section 8 and is heated to the maximum extent by the heating heat exchanger 7, wherein no air flows around the heat exchanger 7 due to the closed cold air flap 10. This results in significantly heated air.

[0061] The heating power of the heat exchanger section 8 of the heating heat exchanger 7 and the setting of the cooling air flap 10 can be adjusted individually for each air duct 3 , so that the temperature of the air 6 can be individually controlled in each air duct 3 .

[0062] Figure 1 As shown, each air channel 3 is assigned at least one air outlet 11 downstream of the heating heat exchanger 7 . Each air outlet 11 can also be assigned an outlet flap 12 for controlling the air outlet 11 . Thus, each air channel 3 can be assigned a single air outlet 11 , or one or each air channel 3 or multiple air channels 3 can be assigned a greater number of air outlets 11 , such as two, three, four, or more air outlets 11 . Examples of such air outlets 11 include a defroster vent 13 , front vents 14 , rear footwell 16 , front footwell 15 , and rear vents 17 .

[0063] One air passage 3 may be assigned, for example, a defroster opening 13, air outlets 11 for front vents 14, and air outlets 15 for the front footwells. Another air passage 3 may be assigned, for example, air outlets 17 for rear vents and air outlets 16 for the rear footwells. Another air passage 3 may be assigned, for example, a defroster opening 13, air outlets 11 for front vents 14 and rear vents 17, and air outlets 11 for front footwells 15 and rear footwells 16.

[0064] exist Figure 1 and Figure 2The air conditioning device 1 shown in FIG. 1 is a four-zone air conditioning device 1 having at least four air ducts 3, wherein each of the four air ducts 3 is assigned with at least one air outlet 11 to a zone in the interior of the motor vehicle. For example, in the four-zone air conditioning device 1 , the first zone can be defined as the front portion of the vehicle interior on the driver's side, and the second zone as the front portion of the vehicle interior on the passenger side. The third zone can be the rear portion of the vehicle interior on the driver's side, and the fourth zone can be the rear portion of the vehicle interior on the passenger side. Thus, each air duct 3 can be assigned to one of these zones, allowing for individual temperature control in at least the corresponding zone.

[0065] In accordance with Figure 16 and Figure 17 In another exemplary embodiment, it is advantageous if the air conditioning device 1 is a dual-zone air conditioning device 1 having at least two air ducts 3, wherein each of the two air ducts 3 is assigned with at least one air outlet 11 to a region of the motor vehicle interior. In this case, for example, in a dual-zone air conditioning device 1, the first region can be defined as the vehicle interior on the driver's side, and the second region can be defined as the region on the passenger side.

[0066] In accordance with Figure 14 and Figure 15 In another exemplary embodiment, it is also convenient for the air conditioning system 1 to be a three-zone air conditioning system 1 having at least three air ducts 3, wherein each of the three air ducts 3 is assigned with at least one air outlet 11 to a region within the motor vehicle interior. For example, in a three-zone air conditioning system 1, the first region can be defined as the front portion of the vehicle interior on the driver's side, and the second region as the front portion of the vehicle interior on the passenger side. The third region can be the rear portion of the vehicle interior.

[0067] Figure 1 It is also shown that at least one partition wall 4 has at least one opening 18 downstream of the heating heat exchanger 7 , wherein the respective opening 18 is assigned a flap 19 by means of which the opening 18 can be opened or closed.

[0068] This makes it possible to connect the air ducts 3 to one another downstream of the heating heat exchanger 7 or to keep the air ducts 3 separate.

[0069] Thus, for example, in defrost operation, when flap 19 is opened and flaps 12 of air outlets 16 and 17, and optionally also flaps 12 of air outlets 14 and 15, are closed, the air 6 intended for the rear area in other operating modes can be directed to defrost opening 13. In normal operation, flap 19 is closed and the separation of air duct 3 is maintained.

[0070] Figure 3 and Figure 4 Shows the cooling mode. Figure 1 and Figure 2 In the air conditioning device 1 of the embodiment, the heating heat exchanger 7 is not heated. Accordingly, while the flaps 10 are open, cool air flows from the cooling heat exchanger 5 through the cool air duct 9 into the corresponding air duct 3. Cool air also flows through the unheated heating heat exchanger 7. For example, the flaps 12 of air outlets 13, 15, and 16 are closed, and for example, only the flaps 12 of air outlets 14 and 17 are open. Accordingly, cool air flows through the air outlet for the front vent 14 and the air outlet for the rear vent 17.

[0071] Figure 5 and Figure 6 Shown in mixed operation Figure 1 and Figure 2 In this embodiment of the air conditioning device 1 , in which the air intended for the rear section is warmer, the heating heat exchanger 7 is heated more significantly in its heat exchanger section 30 intended for the rear than in its heat exchanger section 31 intended for the front. Accordingly, while the flaps 10 are open, cold air flows from the cooling heat exchanger 5 through the cold air duct 9 into the corresponding air duct 3. The cold air also flows through the heated heating heat exchanger 7 , where it is correspondingly heated, and then mixes with the cold air from the cold air duct 9 after the heating heat exchanger 7 . All flaps 12 are slightly open, allowing the heated air to flow out of all air outlets 12 to 17 .

[0072] Figure 7 and Figure 8 Shown in another hybrid run Figure 1 and Figure 2 An air conditioning device 1 of an embodiment is provided, in which the air for different areas is heated to different degrees. In the area for the front driver's side, the air is moderately heated; in the area for the front passenger's side, the air is greatly heated; in the area for the rear driver's side, the air is not heated; and in the area for the rear passenger's side, the air is moderately heated. While the flaps 10 are at least slightly open, cold air also flows from the cooling heat exchanger 5 through the cold air duct 9 into the corresponding air duct 3. The cold air also flows through the heated heating heat exchanger 7 and is heated there according to the control, and after the heating heat exchanger 7, it is mixed with the cold air from the cold air duct 9. All flaps 12 are at least slightly open, so that the heated air flows out of all air outlets 12 to 17.

[0073] Figure 9 and Figure 10 Shows the hot air mode. Figure 1 and Figure 2 In an embodiment of an air conditioning system 1 , the heating heat exchanger 7 is significantly heated. The cold air flap 10 is closed, so no cold air flows from the cooling heat exchanger 5 through the cold air duct 9 into the corresponding air duct 3 . Air also flows through the significantly heated heating heat exchanger 7 , where it is heated. For example, the flaps 12 of air outlets 13 , 14 , and 17 are closed, and only the flaps 12 of air outlets 15 and 16 are open. Accordingly, very hot air flows through the air outlet for the front footwell 15 and the air outlet for the rear footwell 16 .

[0074] Figure 11 and Figure 12 Shows the defrost mode. Figure 1 and Figure 2 An air conditioning device 1 of an embodiment in which the heating heat exchanger 7 is heated significantly and hot air is directed only from the defroster opening 13. The cold air flap 10 is closed, so no cold air flows from the cooling heat exchanger 5 through the cold air channel 9 into the corresponding air channel 3. The air also flows through the significantly heated heating heat exchanger 7 and is heated there. The flap 19 is opened and the opening 18 is released, so that hot air can be directed from the air channel 3 for the rear to the defroster opening 13. For example, the flaps 12 of the air outlets 14 to 17 are closed, and only the flap 12 of the air outlet 13 is open. Correspondingly, very hot air flows only through the air outlet for the defroster 13.

[0075] The flaps 10 and 19 can be controlled independently of each other by actuators. Alternatively, the flaps 10 and 19 can also be coupled. Figure 13 This coupling is illustrated with the aid of a schematic diagram which shows the flap opening of the flaps 10 and 19 as a function of the stroke movement of the actuator.

[0076] The figure shows a curve 40, which illustrates the flap position of flap 10, and a curve 41, which illustrates the flap position of flap 19. Looking from left to right, the leftmost side shows the cold air operating mode I. The cold air flap 10 is fully opened, and the flap 19 is closed.

[0077] Continuing to view to the right, the corresponding mixed operating mode II is present, in which the cooling air flap 10 is partially closed and the flap 19 is closed.

[0078] Looking further to the right, there is a corresponding maximum heating operating mode III, for example a maximum footwell operating mode, in which the cold air flap 10 is closed and the flap 19 is closed.

[0079] On the far right is defrost mode IV, in which the cold air flap 10 is closed and the flap 19 is open.

[0080] Figure 14 and Figure 15 A further embodiment of an air conditioning device 1 according to the invention is shown, wherein a three-zone air conditioning device 1 is shown. Figure 14 and Figure 15 The air conditioning device 1 is generally Figure 1 and Figure 2 The air conditioning device 1 corresponds to , wherein no partition wall is provided for the rear section, but only one air duct 3 is provided for the rear section, which supplies the air outlets 16 and 17. Thus, the cold air flap 10 is designed as a series or two coupled cold air flaps 10 are provided.

[0081] The heating heat exchanger 7 can be Figure 1 and Figure 2 The same heat exchanger of the embodiment of the present invention, wherein the heat exchanger section 8 for the rear portion can be coupled by control. Alternatively, the heating heat exchanger 7 can also have only three heat exchanger sections 8 for the corresponding air channels 3.

[0082] Figure 16 and Figure 17 A further embodiment of an air-conditioning device 1 according to the invention is shown, wherein a dual-zone air-conditioning device 1 is shown. Figure 16 and Figure 17 The air conditioning device 1 is generally Figure 1 and Figure 2 The air conditioning device 1 corresponds to the embodiment of the present invention, wherein the air duct 3 for the rear and the air outlet 16, 17 for the rear are omitted. A partition wall 4 for dividing the front or the front and rear together between the driver's side and the co-driver's side is still provided.

[0083] The heating heat exchanger 7 can be Figure 1 and Figure 2 The same heat exchanger of the embodiment of the present invention can be used, wherein the heat exchanger section 8 for the rear portion can be coupled with the heat exchanger section 8 for the front portion by control. Alternatively, the heating heat exchanger 7 can also have only two heat exchanger sections 8 for the corresponding air channels 3.

[0084] Figure 18 and Figure 19 Another embodiment of an air conditioning device 1 according to the present invention is shown, wherein a single-zone air conditioning device 1 is shown. Figure 18 and Figure 19 The single zone air conditioning device 1 is generally similar to Figure 16 and Figure 17The air conditioning system 1 corresponds to an air conditioning system 1 in which the separation of the air ducts 3 on the driver's side and the front passenger's side is eliminated. The partition wall 4 for dividing the driver's side and the front passenger's side can be omitted for the front or for the front and rear together, or alternatively, it can be provided that the air ducts 3 can be coupled by controlling the heating heat exchanger 7.

[0085] The heating heat exchanger 7 can be Figure 1 and Figure 2 or Figure 16 and Figure 17 The same heat exchanger 7 as in the embodiment of the present invention can be used, wherein the heat exchanger section 8 for the driver's side and rear can be coupled to the heat exchanger section 8 for the front and passenger side by control. Alternatively, the heating heat exchanger 7 can also have only one heat exchanger section 8 for the air duct 3.

[0086] Optionally, a single-zone air-conditioning device 1 for a motor vehicle can also be designed, which has a shell 2, which has at least one air channel formed therein, wherein two air channels running in parallel can also be provided, and the two air channels can be arranged in the shell 2 separated from each other by means of at least one partition wall 4; wherein a cooling heat exchanger 5 can be arranged in the shell 2 in such a way that air 6 can flow through the cooling heat exchanger, and the air flows into the at least one air channel 3; wherein a heating heat exchanger 7 is provided, which is arranged in the shell 2 so that the heating heat exchanger extends into the at least two independent air channels 3 and the air 6 in the air channels 3 can flow through the heating heat exchanger, wherein the heating heat exchanger 7 is an electrically drivable heat exchanger, which is designed with a heatable heat exchanger section or a plurality of independently heatable heat exchanger sections 8, wherein the plurality of heat exchanger sections can be operated simultaneously by control, so that the air 6 flowing through the one heat exchanger section 8 or these parallel-operating heat exchanger sections 8 can be heated.

[0087] Alternatively or additionally, another embodiment can provide for a further air channel to bypass the cooling heat exchanger 5 as a bypass channel. Such a bypass channel can be provided with a corresponding bypass flap to control the flow rate through it. Thus, for operating modes III or VI to II, from "heating" to "moderate cooling," the flow resistance can be further reduced by enabling flow around the cooling heat exchanger 5 , such as the evaporator. In operating mode I for maximum cooling, the bypass channel is then closed again.

[0088] List of Reference Numerals

[0089] 1 Air conditioning unit

[0090] 2 shell

[0091] 3 air channels

[0092] 4 partition walls

[0093] 5Cooling heat exchanger

[0094] 6 Air

[0095] 7Heating heat exchanger

[0096] 8Heat exchanger area

[0097] 9 cold air channels

[0098] 10 Cold air flap

[0099] 11 Air outlet

[0100] 12 export flap

[0101] 13 Defrost port

[0102] 14 front vents

[0103] 15 front footwell

[0104] 16 rear footwell

[0105] 17 rear vents

[0106] 18 openings

[0107] 19 flip board

[0108] 30 for the rear heat exchanger area

[0109] 31 for the front heat exchanger area

[0110] 40 curves

[0111] 41 Curve

Claims

1. An air conditioning device (1) for a motor vehicle, the air conditioning device comprising a housing (2), the housing having at least two independent air passages (3) formed therein, the air passages being arranged in the housing (2) separated from each other by means of at least one partition wall (4); a cooling heat exchanger (5) being arranged in the housing (2) such that air (6) can flow through the cooling heat exchanger (5) and the air (6) can flow into the at least two independent air passages (3); a heating heat exchanger (7) being provided, the heating heat exchanger (7) being arranged in the housing (2) such that the heating heat exchanger (7) extends into the at least two independent air passages (3) and the air (6) of the at least two independent air passages (3) can flow through the heating heat exchanger (7), characterized in that: The heating heat exchanger (7) is an electrically driven heat exchanger, and the heating heat exchanger (7) is designed with a plurality of heat exchanger sections (8) that can be heated independently, so that the air (6) flowing through a heat exchanger section (8) can be heated independently, wherein each independent air channel (3) is provided with at least one heat exchanger section (8), and the at least one heat exchanger section (8) is arranged in the corresponding independent air channel (3); the heating heat exchanger (7) intervenes in the corresponding independent air channel (3) in such a way that a cooling force is provided in each of the corresponding air channels (3) to guide the air (6) to bypass the heating heat exchanger (7). An air channel (9), wherein the corresponding cold air channel (9) is provided with a cold air flap (10), by means of which the corresponding cold air channel (9) can be opened or closed; the air (6) is individually temperature-controlled for each air channel (3) through the heat exchanger section (8) and the cold air flap (10); at least one partition wall (4) has at least one opening (18) downstream of the heating heat exchanger (7), wherein the corresponding opening (18) is provided with a flap (19), by means of which the opening (18) can be opened or closed, and the air channels (3) are connected to each other or the air channels (3) are kept separated by the flap (19).

2. The air conditioning device (1) according to claim 1, characterized in that Only one heating heat exchanger (7) is provided. The heating heat exchanger (7) is an electrically driven heat exchanger. The heat exchanger (7) is designed with a plurality of heat exchanger sections (8) that can be heated independently.

3. The air conditioning device (1) according to claim 1 or 2, characterized in that: Each of the air channels (3) is assigned at least one air outlet (11) downstream of the heating heat exchanger (7).

4. The air conditioning device (1) according to claim 1 or 2, characterized in that: The air conditioning device (1) is a dual-zone air conditioning device (1) having at least two air ducts (3), wherein the two air ducts (3) are each assigned with their at least one air outlet (11) to a zone in the interior of the motor vehicle.

5. The air conditioning device (1) according to claim 1, characterized in that The air conditioning device (1) is a three-zone air conditioning device (1) having at least three air ducts (3), wherein each of the three air ducts (3) is assigned with its at least one air outlet (11) to a zone in the interior of the motor vehicle.

6. The air conditioning device (1) according to claim 1, characterized in that The air conditioning device (1) is a four-zone air conditioning device (1) having at least four air ducts (3), wherein each of the four air ducts (3) is assigned with its at least one air outlet (11) to a zone in the interior of the motor vehicle.

7. The air conditioning device (1) according to claim 5 or 6, characterized in that: Two air ducts (3) are assigned to a region of the motor vehicle interior arranged in a front region of the vehicle interior; and in the case of the three-zone air conditioning device (1) one air duct (3) or in the case of the four-zone air conditioning device (1) two air ducts (3) are assigned to a region of the motor vehicle interior arranged in a rear region of the vehicle interior.

8. The air conditioning device according to claim 1 or 2, characterized in that: At least one additional bypass channel is provided, and an additional bypass channel is provided in each air channel (3), and each bypass channel bypasses the cooling heat exchanger (5), wherein a bypass flap is optionally provided in each corresponding additional bypass channel for controlling the flow through the at least one additional bypass channel.

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