Collecting tank for heat exchangers

Abstract

The invention relates to a collecting tank (1) for a heat exchanger (50), comprising at least one manifold (2) with a bottom (5), the bottom (5) comprising a tank receiving portion (6) for heat exchanger tubes (52) of the heat exchanger (50). The stability of the collecting tank (1) is increased due to the fact that the bottom (5) has at least one bend (7) facing outwards. The invention also relates to a heat exchanger (50), in particular a heat pump heater (51), comprising such a collecting tank (1). The invention also relates to an air conditioning system (100) comprising such a heat exchanger (50), and a motor vehicle (200) comprising such an air conditioning system (100).

Description

TECHNICAL FIELD

[0001] The present invention relates to a collecting tank for a heat exchanger, in particular for a heat pump heater. The present invention further relates to a heat exchanger comprising the collecting tank, to an air conditioning system comprising the heat exchanger and to a motor vehicle comprising the air conditioning system. BACKGROUND

[0002] In a heat exchanger, heat is transferred between two fluids during operation. One of these fluids usually flows through the heat exchanger tubes of the heat exchanger via the collecting tank. In addition, the other fluid flows around the heat exchanger tubes, resulting in a heat transfer between the fluids which leads to a separation of the fluids in possible operating states. This usually leads to a phase change of the fluids flowing through the collecting tank and the heat exchanger tubes. In particular, this leads to a condensation of the fluids, for example refrigerants. It is also conceivable that this type of heat exchanger is operated in operating modes in which only one fluid flows through the heat exchanger, so that the heat transfer of the heat exchanger is not present or at least reduced in these operating modes.

[0003] Such a heat exchanger is known from WO 2012 / 041441 A2. The collecting tank therefore has at least one manifold comprising a hollow space, which can be flowed through by a fluid. The manifold has a bottom, by means of which the heat exchanger tubes of the heat exchanger are fluidically connected to the hollow space. For this purpose, the bottom has corresponding receptacles for the heat exchanger tubes. SUMMARY

[0004] It is an object of the present invention to propose improved or at least different embodiments for a collecting tank of the above-mentioned type, for a heat exchanger comprising the collecting tank, for an air conditioning system comprising the heat exchanger and for a motor vehicle comprising the air conditioning system, which in particular eliminate the disadvantages of the solutions known from the prior art. In particular, it is an object of the present invention to propose embodiments of a collecting tank, a heat exchanger, an air conditioning system and a motor vehicle which are characterized by an improved stability.

[0005] According to the invention, this object is achieved by the subject matter of the independent claims. Advantageous embodiments are the subject matter of the dependent claims.

[0006] The general idea on which the present invention is based is to provide a bottom for a collecting box of a heat exchanger, which bottom has a receiving portion for heat exchanger tubes and at least one bend towards the outside. The at least one bend results in a tension in the collecting box, in particular in the bottom. This leads to an improved mechanical stability of the collecting box, in particular of the bottom, compared to forces acting from the inside to the outside. In this way, the collecting box thus has a higher pressure resistance. The corresponding heat exchanger also has a higher pressure resistance and thus an improved mechanical stability as a result. The at least one bend and the resulting bottom tension further reduce the mechanical stress to which the heat exchanger tubes received in the bottom are subjected.

[0007] According to the idea of the present invention, the collecting box has at least one manifold for receiving heat exchanger tubes. The tubes are also referred to as heat exchanger tubes hereinafter. The respective manifold thus has a hollow space which can be flowed through by a fluid and which is defined in the collecting box. The respective manifold has a bottom. Formed in the bottom are receiving portions for heat exchanger tubes of the heat exchanger which are spaced apart from one another in one direction. This direction is also referred to as the longitudinal direction hereinafter. The receiving portions are also referred to as box receiving portions hereinafter. The box receiving portions extend in one direction which extends transversely to the longitudinal direction and is also referred to as the transverse direction hereinafter. The direction which extends transversely to the longitudinal direction and transversely to the transverse direction is also referred to as the height direction hereinafter, in which direction the bottom has at least one bend which faces away from the hollow space and thus towards the outside.

[0008] The collecting box is used for a heat exchanger and serves to collect and / or distribute a fluid which flows through the heat exchanger tubes during operation. The heat exchanger can have two such collecting boxes which are arranged opposite one another in the height direction. The bottoms of the collecting boxes are thus opposite one another in the height direction.

[0009] The fluid which flows through the heat exchanger tubes during operation can flow through the hollow space of the respective manifold. This means that the flow path of the fluid passes through the hollow space of the respective manifold. In particular, the fluid is a refrigerant. The flow path is thus also generally referred to as the refrigerant path hereinafter.

[0010] It is advantageous if the flow cross section of the respective manifold is defined or formed by the bottom and a wall of the manifold which adjoins the bottom.

[0011] The wall preferably has a circular portion which is in the shape of a circular arc segment lying opposite the corresponding bottom and a transition portion which adjoins and transitions to the bottom on both sides. Each transition portion is preferably shaped and formed in such a way that the circular portion together with the transition portion defines or defines an approximately omega-shaped flow cross section. This in particular makes it possible to realize a fluid supply to the manifold with reduced pressure losses.

[0012] At least one of the at least one bend, preferably the respective bend, advantageously extends longitudinally in the transverse direction. At least one of the at least one bend, preferably the respective bend, preferably extends parallel to the tank accommodation.

[0013] In the transverse direction, the respective tank accommodation extends with a width, which is also referred to as accommodation width in the following.

[0014] In the height direction, the respective bend extends with a height, which is also referred to as bend height in the following. The bend height thus extends between the point at which the bend protrudes most in the height direction and the point at which the bend is most proximate in the bend height direction, and in this case the corresponding manifold has the greatest manifold width in the transverse direction. This means, therefore, that, in particular in the height direction, the bend height extends between the transition of the wall to the bottom and the point at which the bottom protrudes most in the height direction. The bend height thus preferably extends between the outside of the manifold facing away from the corresponding hollow space.

[0015] In an advantageous embodiment, the ratio of at least one of the at least one bend height to at least one of the accommodation widths of the at least one manifold is 0.05 to 1.5. The ratio between the respective bend height and the respective accommodation width is preferably 0.05 to 1.5. This achieves an advantageous mechanical stability of the manifold, in particular pressure resistance, while at the same time making the formation of the manifold compact and / or reducing the penetration depth of the corresponding heat exchanger tubes into the manifold.

[0016] It is particularly preferred that the ratio between at least one of the at least one bend height and at least one of the accommodation widths of the at least one manifold, in particular the ratio between the respective bend height and the respective accommodation width, is 0.10 to 0.5. This means that the bend height corresponds to 10% to 50% of the accommodation width. Complex and time-consuming investigations and optimizations have led to the surprising result that this ratio between the bend height and the accommodation width leads to a particular improvement in the stability, in particular the pressure resistance, of the manifold, while at the same time reducing the required installation space and the penetration depth of the heat exchanger tubes.

[0017] In an advantageous embodiment, the accommodation width extends between the inner sides of the box accommodation which face one another in the transverse direction. This means that the accommodation width extends from one inner side to the other. The accommodation width thus corresponds at least substantially to the width of the heat exchanger tube accommodated in the box accommodation which extends in the transverse direction. As a result, the forces transferred to the heat exchanger tube and thus the mechanical stresses on the heat exchanger tube are reduced by the said tensile forces acting in a reduced manner in the region of the box accommodation. As a result, the service life of the heat exchanger is extended. In this way, it is additionally possible to produce the individual heat exchanger tubes in a manner with thinner walls, thus more cost-effectively and with less weight.

[0018] Generally, the bottom can have such a curvature completely. This means that the entire bottom can be curved outwards.

[0019] The bottom as a whole is preferably curved outwards in the height direction and additionally has at least one such curvature. This means that the bottom has a convex basic shape which is curved outwards and in which at least one such curvature is additionally and locally introduced. This leads to a particularly increased pressure resistance, thus to an increased mechanical stability. The bottom advantageously has two such curvatures which are spaced apart from one another in the longitudinal direction. The respective curvature thus preferably extends over the entire bottom in the transverse direction.

[0020] Between at least two successive box accommodations, the bottom preferably has one such curvature. In particular, it can be envisaged that the bottom has one such curvature between the respective successive box accommodations, such that the box accommodations and the curvatures follow one another in the longitudinal direction in alternation. This makes the collection tank have a particularly pronounced pressure resistance.

[0021] The collection tank can have a single such manifold.

[0022] It is also envisaged that the collection tank has two or more manifolds which are adjacent in the transverse direction. The bottom of the respective manifold thus preferably has at least one such curvature.

[0023] In principle, the manifolds of the collection tank can be produced separately and subsequently attached to one another, in particular connected to one another.

[0024] The manifolds of the collection tank are preferably integral. The manifolds are thus made integrally or jointly from the same base material. In particular, the manifolds can be made from sheet metal, for example by forming the sheet metal. The manifolds are thus in particular made from the same sheet metal which is processed, in particular deformed, to produce the manifolds and has the collection tank accommodation.

[0025] At least one of the manifolds, preferably the respective manifold, is advantageously closed in the longitudinal direction, so that the hollow space in the manifold is limited in the longitudinal direction. To this end, the collection tank can have, for example, at least one end plate attached to the manifold.

[0026] For the supply of fluid, the collection tank can have at least one fluid connection. The refrigerant path thus passes through the respective fluid connection.

[0027] It is thus conceivable that at least one of the at least one fluid connection is formed at the bottom of at least one of the manifolds. At least one such bend is thus preferably arranged between the connection and the tank accommodation closest in the longitudinal direction.

[0028] The respective tank accommodation can be formed in any way, in particular be introduced into the corresponding bottom.

[0029] In an advantageous embodiment, the tank accommodation of at least one of the at least one manifold, preferably the respective manifold, is formed by a passage facing away from the corresponding hollow space.

[0030] It goes without saying that, in addition to the collection tank, the heat exchanger itself comprising such a collection tank also falls within the scope of protection of the present application.

[0031] The refrigerant path thus passes through the collection tank and the heat exchanger tubes. The flow path of the fluid also leads between the heat exchanger tubes and is fluidically separated from the refrigerant path. Advantageously, the fluid is a gas, in particular air. The flow path is also referred to hereinafter as the gas path. Thus, during operation, heat transfer takes place between the refrigerant and the gas.

[0032] The heat exchanger is in particular designed as a condenser, so that the refrigerant condenses in the heat exchanger during operation. The heat exchanger is in particular designed as a heat pump heater. Thus, during operation, heat transfer from the refrigerant to the gas takes place, so that the gas absorbs heat and the refrigerant emits heat and cools or condenses. In order to condense the refrigerant, a saturation pressure above the desired gas outlet temperature must be reached. Thus, an increase in pressure leads to the heat exchange taking place during operation, in particular in the collection tank and the heat exchanger tubes. The collection tank according to the application is thus in particular suitable for use in a heat exchanger, in which the fluid flowing through the heat exchanger tubes and the collection tank condenses during operation, and is thus in particular suitable for use in a condenser and / or a heat pump heater.

[0033] The heat exchanger tubes of the heat exchanger can generally be designed in any way.

[0034] The heat exchanger tubes are advantageously formed as flat tubes. This makes the formation of the heat exchanger tubes very compact and reduces the flow resistance of the fluid flowing around the heat exchanger tubes, thus especially for gases. Due to the reduced mechanical stress on the heat exchanger tubes, the heat exchanger tubes formed in the form of flat tubes are at the same time effectively mechanically maintained.

[0035] The heat exchanger, in particular the corresponding condenser or heat pump heater, can generally be used in any application.

[0036] The heat exchanger is advantageously used in a cooling circuit in which a refrigerant is circulated along a refrigerant path. The cooling circuit can thus be part of an air conditioning system.

[0037] The heat exchanger is thus advantageously arranged on the pressure side of the cooling circuit, so that the refrigerant condenses in the heat exchanger during operation.

[0038] The air conditioning system can generally be used in any application.

[0039] In particular, the air conditioning system and / or the heat exchanger are used in a motor vehicle in order to carry out air conditioning, for example of the interior of the motor vehicle.

[0040] The heat exchanger can thus be used for heating the interior. To this end, the gas path leads from the heat exchanger to the interior.

[0041] It goes without saying that such an air conditioning system and motor vehicle, in addition to the collection tank and the heat exchanger, also belong to the scope of protection of the present application.

[0042] Further important features and advantages of the present application result from the dependent claims, the figures and the corresponding figure description based on the figures.

[0043] It goes without saying that the above-mentioned features and the features to be described hereinafter can be used not only in the respective specified combinations, but also in other combinations or alone without departing from the scope of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0044] Preferred exemplary embodiments of the present application are shown in the drawings and will be described in more detail in the following description, in which the same reference designations refer to identical or similar or functionally identical components.

[0045] are shown schematically, respectively:

[0046] Figure 1 a diagram showing a highly simplified circuit diagram of an air conditioning system comprising a heat exchanger in a motor vehicle,

[0047] Figure 2 an isometric view showing a heat exchanger comprising a collection tank,

[0048] Figure 3 a side view of the heat exchanger along the transverse direction is shown,

[0049] Figure 4 an isometric view of the heat exchanger in the region of the collection tank is shown,

[0050] Figure 5 a side view of the heat exchanger in the region of the collection tank along the longitudinal direction is shown,

[0051] Figure 6 a sectional view through the heat exchanger in the region of the collection tank is shown. DETAILED DESCRIPTION

[0052] As Figures 2 to 6 The exemplary shown collection tank 1 is used in a cooling circuit 101 of an air conditioning system 100 as Figures 1 to 6 The exemplary shown heat exchanger 50 is used in a cooling circuit 101 of an air conditioning system 100 as Figure 1 The heat exchanger 50 as well as the air conditioning system 100 can be used in a motor vehicle 200, which is shown in a highly simplified manner in Figure 1 The heat exchanger 50 can be designed as a heat pump heater 51, which heats a gas, in particular air, during operation. The heated gas can be fed into an interior 201 of the motor vehicle 200.

[0053] As can be taken from Figure 1 The air conditioning system 100 has a cooling circuit 101, through which a refrigerant circulates along a flow path 55, also referred to as refrigerant path 55 in the following, during operation. The heat exchanger 50 is integrated in the cooling circuit 101 such that the refrigerant path 55 passes through the heat exchanger 50. The air conditioning system 100 further has a drive device 102 for driving the refrigerant such that it circulates in the cooling circuit during operation. The refrigerant thereby continuously flows through at least one condenser 103, an expander 104 and the heat exchanger 50, which operates as an evaporator 105 in a heating mode, which will be referred to as evaporator 105 in the following for short. Thus, the condenser 103 and the evaporator 105 are used as heat exchanger 50, respectively. The heat exchanger 50 used as heat pump heater 51 is arranged on the pressure side of the cooling circuit 101 and the condenser 103 is arranged in the cooling circuit 101. This means that the refrigerant condenses and / or cools down in the heat pump heater 51 during heating operation. In a cooling mode, the refrigerant is guided through the heat pump heater 51 as superheated vapor without flowing through the gas side of the heat pump heater 51 and condenses in a condenser (not shown), which is arranged downstream along the refrigerant path 55. In another possible embodiment, the refrigerant side of the heat pump heater 51 is not flowed through in the cooling mode. In this case, the gas side can be flowed through.

[0054] From Figures 2 to 6 It can be seen that in the shown exemplary embodiment the heat exchanger 50 has two such collection boxes 1. In the shown exemplary embodiment the collection boxes 1 are formed essentially identically. In the shown exemplary embodiment the essential difference between the collection boxes 1 is that one of the collection boxes 1 provides the heat exchanger 50 with refrigerant. For this purpose this collection box 1 has two fluid connections 13 through which the tube body 106 is fluidically connected to the air conditioning system 100. The collection box 1 having the fluid connections 13 will be discussed below, it being apparent therefrom that in the shown exemplary embodiment the outer geometry of the other collection box 1 corresponds to this collection box 1 apart from the fluid connections 13. The inner setup of the collection boxes 1 can be different, for example the partition walls, the further restrictions on the refrigerant side and the passage openings between the heat exchanger tubes 52 (not shown respectively) can be different.

[0055] According to Figures 2 to 6 , the collection box 1 has at least one manifold 2 for accommodating the heat exchanger tubes 52 of the heat exchanger 50. In the shown exemplary embodiment the respective collection box 1 has two such manifolds 2. The respective at least one manifold 2 has a hollow space 3 (see Figure 6 ) which can be flowed through, the refrigerant flowing through the hollow space 3 during operation. This means that the refrigerant path 55 runs through the hollow space 3 of the manifold 2. The respective manifold 2 has a bottom 5 in which accommodation portions 6 are formed for accommodating the heat exchanger tubes 52, the accommodation portions 6 being spaced apart from one another in the longitudinal direction 40 and extending in a transverse direction 41 which extends transversely to the longitudinal direction 40. These accommodation portions 6 are also referred to hereinafter as box accommodation portions 6.

[0056] The heat exchanger tubes 52 accommodated in the box accommodation portions 6 are thus fluidically connected to the hollow space 3, so that the refrigerant runs through the heat exchanger tubes 52 during operation. This means that the refrigerant path 55 runs through the heat exchanger tubes 52. The wall 4 of the corresponding manifold 2 which is adjacent to the respective bottom 5 by means of the bottom 5, the wall 4 defining the hollow space 3 of the manifold 2 which can be flowed through. The manifolds 2 of the collection box 1 are also adjacent in the transverse direction 41. In the shown exemplary embodiment the box accommodation portions 6 are formed by passages 12 which face away from the corresponding hollow space 3.

[0057] It can be seen in particular from Figures 4 to 6 , that the bottom 5 has at least one bend 7 which faces outwards and thus away from the hollow space 3 in a height direction 42 which extends transversely to the longitudinal direction 40 and transversely to the transverse direction 41. It can be seen in particular from Figures 4 to 6It can be seen that the respective bottom 5 in the exemplary embodiment shown has at least two such bends 7 which are spaced apart from one another in the longitudinal direction 40. It can also be seen from the figures that in the exemplary embodiment shown, in each case one such bend 7 is arranged between successive box receptacles 6. The bends 7 thus extend in the transverse direction 41 and thereby parallel to the box receptacles 6. From Figure 4 It can also be seen in particular that in the case of a collecting box 1 having a fluid connection 13, at least one such bend 7 is also formed between the connection 13 and the nearest box receptacle 6 in the longitudinal direction 40. In the exemplary embodiment shown, purely by way of example, three bends 7 are arranged in the longitudinal direction 40 between the connection 13 and the nearest box receptacle 6. It is also conceivable for the bottom 5 as a whole to have such bends 7, which thus curve completely outwards (not shown). From Figure 2 and Figure 3 It can be seen that the collecting boxes 1 are thus arranged opposite one another in the height direction 42, such that the bottoms 5 are opposite one another in the height direction 42. In the exemplary embodiment shown, the bottoms 5 have a basic shape which curves outwards in the height direction 42, and the bends 7 are additionally and locally introduced into this basic shape.

[0058] From Figure 6 It can be seen that the respective box receptacle 6 extends in the transverse direction 41 with a width 8, which is also referred to in the following as the receptacle width 8. From Figure 6 It can also be seen from the figures that the respective bend 7 has a height 9, which extends in the height direction 42 and is also referred to in the following as the bend height 9. The bend height 9 thus extends from the point of the bend 7 which protrudes most in the height direction 42, and from the point of the bend 7 which is nearest in the height direction 42, and in this case the corresponding manifold 2 has a maximum width 10 in the transverse direction 41. The width 10 of the manifold 2 is also referred to in the following as the manifold width 10. In the exemplary embodiment shown, the maximum manifold width 10 is present on the outer side of the wall 4 facing away from the hollow space 3 in the transition region of the wall 4 to the bottom 5. The bend height 9 thus extends between the outer sides of the corresponding manifold 2 facing away from the hollow space 3. The receptacle width 8 also extends between the inner sides 11 which are opposite one another in the transverse direction 41.

[0059] In the shown exemplary embodiment of the respective bending height 9 and the respective receiving width 8, the ratio between at least one of the at least one bending height 9 and at least one of the receiving width 8 of the at least one manifold 2 is thus 0.05 to 1.5. In the shown exemplary embodiment, the ratio between at least one of the at least one bending height 9 and at least one of the receiving width 8 of the at least one manifold 2 is 0.10 to 0.5 in the shown exemplary embodiment of the respective bending height 9 and the respective receiving width 8.

[0060] It can be particularly seen from Figure 1 that the flow path 56 of the gas, in the following also referred to as gas path 56, passes through the heat exchanger 50, which is formed as heat pump heater 51 and is fluidically separated from the refrigerant path 55, such that heat is transferred between the refrigerant and the gas during operation. The gas, in particular air, is thereby heated and can then be fed into the interior 201 as described above. This further leads to condensation of the refrigerant flowing through the heat exchanger 50.

[0061] It can be particularly seen from Figure 3 that in the shown exemplary embodiment, the heat exchanger tubes 52 are formed as flat tubes 53. The gas path 56 thus leads between the heat exchanger tubes 52. As can also be particularly seen from Figure 2 and Figure 4 in the shown exemplary embodiment, corrugated fins 54, through which gas can flow, are arranged between adjacent heat exchanger tubes 52. They lead to an increase of the heat transfer surface, thus improving the heat transfer between the gas and the refrigerant. For the sake of clarity, only the corrugated fins 54 on the outer heat exchanger tubes 52 in the longitudinal direction 40 are shown in Figures 2 to 4 .

[0062] The collection tank 1 according to the application has an increased mechanical stability, in particular an increased pressure resistance. The same applies to the heat exchanger 50 with heat exchanger tubes 52, in particular to the heat exchanger 50 with flat tubes 53.

Claims

1. A collection box (1) for a heat exchanger (50), - comprising at least one manifold (2) for accommodating heat exchanger tubes (52) of a heat exchanger (50), - wherein the respective at least one manifold (2) has a hollow space (3) through which a flow can flow, -in, The respective manifold (2) has a bottom (5) in which tank accommodating portions (6) for accommodating heat exchanger tubes (52) are formed, the tank accommodating portions (6) being spaced apart from each other in a longitudinal direction (40) and extending in a transverse direction (41) extending transversely to the longitudinal direction (40), It is characterized by In a height direction (42) extending transversely to the longitudinal direction (40) and transversely to the transverse direction (41), facing away from the hollow space (3), the bottom (5) has at least one bend (7) toward the outside; The base (5) has a basic shape that is bent outward in the height direction (42), and at least one such bend (7) is additionally and locally introduced into the basic shape, and one such bend (7) is arranged between consecutive box receptacles (6).

2. The collection box according to claim 1, characterized in that In the transverse direction (41), the respective box receptacle (6) extends with a receptacle width (8), - the respective at least one bend (7) has a bend height (9) extending between the most protruding point of the bend (7) in the height direction (42) and the closest point of the bend (7) in the height direction (42), and in this case the corresponding manifold (2) has a maximum manifold width (10) in the transverse direction (41), - a ratio between at least one of the at least one bending height (9) and at least one of the receiving widths (8) of at least one of the at least one manifold (2) of 0.05 to 1.

5.

3. The collection box according to claim 2, characterized in that The ratio between at least one of the at least one bend height (9) and at least one of the receiving widths (8) of at least one of the at least one manifold (2) is between 0.10 and 0.

5.

4. The collection box according to claim 2 or 3, characterized in that The receiving width (8) extends between inner sides (11) of the tank receiving portion (6) facing each other in a transverse direction (41).

5. The collection box according to any one of claims 1 to 3, characterized in that The bottom (5) completely has such a bend (7).

6. The collection box according to any one of claims 1 to 3, characterized in that The collecting box (1) has two manifolds (2) adjacent to each other in a transverse direction (41), wherein the respective manifold (2) has at least one such bend (7).

7. The collection box according to any one of claims 1 to 3, characterized in that The tank receptacle (6) of at least one of the at least one manifold (2) is formed by a channel (12) facing away from the corresponding hollow space (3).

8. A heat exchanger (50) comprising a collecting tank (1) according to one of claims 1 to 7 and comprising at least two heat exchanger tubes (52) accommodated in a tank accommodation portion (6), -in, A refrigerant path (55) of the refrigerant passes through the collecting tank (1) and the heat exchanger tubes (52), -in, A gas path (56) for the gas is directed between the heat exchanger tubes (52) and is fluidly separated from the refrigerant path (55) such that heat is transferred between the refrigerant and the gas during operation.

9. The heat exchanger according to claim 8, characterized in that The heat exchanger tubes (52) are formed as flat tubes (53).

10. The heat exchanger according to claim 8, characterized in that The heat exchanger (50) is a heat pump heater (51).

11. An air conditioning system (100) for a motor vehicle (200), - comprises a cooling circuit (101) through which a refrigerant circulates during operation along a refrigerant path (55), - comprising a heat exchanger (50) according to any one of claims 8 to 10, through which a refrigerant path (55) passes.

12. The air conditioning system according to claim 11, characterized in that The heat exchanger (50) is arranged on the pressure side of the cooling circuit (101) so that the refrigerant condenses in the heat exchanger (50) during operation.

13. A motor vehicle (200) comprising a heat exchanger (50) according to any one of claims 8 to 10, wherein: The gas path leads to the interior (201) of the motor vehicle (200).

14. A motor vehicle (200) according to claim 13, comprising an air conditioning system (100) according to claim 11 or 12.

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