Heat exchanger

Abstract

The utility model provides a heat exchanger which comprises a liquid collecting pipe, a heat exchanger and a heat exchanger, the multiple heat exchange pipes are arranged at intervals in the length direction of the liquid collecting pipe, and the multiple heat exchange pipes communicate with the liquid collecting cavity; the liquid separation plate is arranged in the liquid collection cavity, the liquid separation plate extends in the length direction of the liquid collection pipe so as to divide the liquid collection cavity into a collection cavity and a liquid separation cavity, the liquid separation cavity communicates with the heat exchange pipe, a plurality of liquid separation structures are arranged on the liquid separation plate, and the multiple liquid separation structures are arranged at intervals in the extending direction of the liquid separation plate; and the multiple liquid separation structures are arranged in one-to-one correspondence with the inlets of the multiple heat exchange pipes, the liquid separation structures communicate with the collection cavity and the liquid separation cavity, each liquid separation structure comprises multiple liquid separation holes, and the distances between the multiple liquid separation holes of the liquid separation structures and the inlets of the corresponding heat exchange pipes are the same. By means of the technical scheme, the problem that in the prior art, the liquid distribution uniformity of a liquid distribution plate in a heat exchanger is poor can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, and in particular to a heat exchanger. Background Art

[0002] In the prior art, a heat exchanger includes a liquid collecting pipe, a liquid separation plate, and a plurality of heat exchange tubes, wherein the plurality of heat exchange tubes are connected to the liquid collecting pipe, and the liquid separation plate is arranged inside the heat exchange tube. Among them, a plurality of liquid separation holes are arranged at intervals along the extension direction on the liquid separation plate. However, such an arrangement results in a low efficiency of distributing the refrigerant to the plurality of heat exchange tubes, and the liquid separation uniformity of the liquid separation plate is poor, thereby reducing the heat exchange efficiency of the heat exchanger. Utility Model Content

[0003] The utility model provides a heat exchanger to solve the problem of poor liquid separation uniformity of a liquid separation plate in the heat exchanger in the prior art.

[0004] The utility model provides a heat exchanger, which comprises: a collecting pipe, which has a collecting cavity; a plurality of heat exchange tubes, which are arranged at intervals along the length direction of the collecting pipe, and the plurality of heat exchange tubes are connected with the collecting cavity; a liquid separator, which is arranged in the collecting cavity, and the liquid separator extends along the length direction of the collecting pipe to separate the collecting cavity into a collecting cavity and a liquid separator, the liquid separator is connected with the heat exchange tube, a plurality of liquid separator structures are arranged on the liquid separator, the plurality of liquid separator structures are arranged at intervals along the extension direction of the liquid separator, the plurality of liquid separator structures are arranged in one-to-one correspondence with the inlets of the plurality of heat exchange tubes, the liquid separator connects the collecting cavity and the liquid separator, the liquid separator comprises a plurality of liquid separator holes, and the plurality of liquid separator holes of the liquid separator structure are at the same distance from the inlets of the corresponding heat exchange tubes.

[0005] Furthermore, the distance A between the heat exchange tube and the liquid separation plate is set between 1 mm and 5 mm.

[0006] Furthermore, the number of the liquid separation holes of each liquid separation structure is set between 2 and 10.

[0007] Furthermore, the diameter B of the liquid separation hole is set between 0.5 mm and 2 mm.

[0008] Furthermore, the sizes of at least two liquid separation holes of each liquid separation structure are unequal.

[0009] Furthermore, the sizes of the multiple liquid separation holes of each liquid separation structure are equal, and the sizes of the liquid separation holes of at least two liquid separation structures are unequal.

[0010] Furthermore, the heat exchanger also includes a plurality of partitions, which are arranged at intervals along the length direction of the collecting tube, and the partitions are sleeved on a liquid separation plate. The liquid separation plate divides the collecting chamber into a plurality of sub-chambers, each sub-chamber contains at least one liquid separation structure, and the plurality of sub-chambers are connected to at least one heat exchange tube.

[0011] Furthermore, the liquid collecting pipe is provided with a plurality of liquid inlets, and the plurality of liquid inlets are arranged in one-to-one correspondence with the plurality of sub-chambers.

[0012] Furthermore, the plurality of liquid inlets are arranged at equal intervals; and / or each liquid inlet is correspondingly arranged in the middle of each sub-chamber.

[0013] Furthermore, the periphery of the partition is adapted to the inner wall structure of the liquid collecting chamber.

[0014] By applying the technical solution of the utility model, the liquid separation plate separates the liquid collecting cavity of the collecting tube into a collecting cavity and a liquid separation cavity, and the liquid separation cavity is connected to a plurality of heat exchange tubes. A plurality of liquid separation structures are arranged on the liquid separation plate, and the plurality of liquid separation structures are arranged one by one corresponding to the heat exchange inlets of the plurality of heat exchange tubes, and the liquid separation structure includes a plurality of liquid separation holes, and the distance between the liquid separation holes and the corresponding heat exchange tubes is the same. With such an arrangement, when the refrigerant passes through the liquid separation hole, the two-phase refrigerant can be evenly mixed due to throttling acceleration, and then sprayed into the heat exchange tube. And because a plurality of liquid separation holes are provided, the refrigerant is prevented from being blocked at the liquid separation hole and cannot flow smoothly, thereby ensuring the liquid separation effect of the liquid separation plate, and then improving the heat exchange efficiency of the heat exchanger. And with such an arrangement, it is possible to prevent the refrigerant from being blocked at the liquid separation hole, causing excessive pressure in the collecting tube, thereby preventing the collecting tube and the liquid separation plate from being damaged, and improving the service life of the collecting tube and the liquid separation plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 The structure diagram of the heat exchanger provided in the first embodiment of the utility model is shown;

[0017] Figure 2 A top view of a heat exchanger provided in Embodiment 1 of the utility model is shown;

[0018] Figure 3 The schematic diagram of the structure of the liquid separation plate provided in the second embodiment of the present utility model is shown;

[0019] Figure 4 The schematic diagram of the structure of the liquid separation plate provided in the third embodiment of the present utility model is shown.

[0020] The above drawings include the following reference numerals:

[0021] 10. Liquid collecting pipe; 11. Liquid collecting chamber; 111. Collecting chamber; 112. Liquid separation chamber; 113. Sub-chamber; 12. Liquid outlet;

[0022] 20. Heat exchange tube;

[0023] 30. liquid separation plate; 31. liquid separation hole;

[0024] 40. Partition. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0026] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides a heat exchanger, which includes a collecting tube 10, a plurality of heat exchange tubes 20 and a liquid separator 30. The collecting tube 10 has a collecting chamber 11. The plurality of heat exchange tubes 20 are arranged at intervals along the length direction of the collecting tube 10, and the plurality of heat exchange tubes 20 are all connected to the collecting chamber 11. The liquid separator 30 is arranged in the collecting chamber 11, and the liquid separator 30 is extended along the length direction of the collecting tube 10 to separate the collecting chamber 11 into a collecting chamber 111 and a liquid separator 112, and the liquid separator 112 is connected to the heat exchange tube. A plurality of liquid separator structures are arranged on the liquid separator 30, and the plurality of liquid separator structures are arranged at intervals along the extension direction of the liquid separator 30. The plurality of liquid separator structures are arranged one by one corresponding to the inlets of the plurality of heat exchange tubes 20, and the liquid separator structures are connected to the collecting chamber 111 and the liquid separator 112. The liquid separator structure includes a plurality of liquid separator holes 31, and the plurality of liquid separator holes 31 of the liquid separator structure are at the same distance from the inlets of the corresponding heat exchange tubes 20.

[0027] By applying the technical solution of the present application, the liquid separation plate 30 separates the liquid collecting chamber 11 of the liquid collecting tube 10 into a collecting chamber 111 and a liquid separation chamber 112, and the liquid separation chamber 112 is connected to a plurality of heat exchange tubes 20. A plurality of liquid separation structures are arranged on the liquid separation plate 30, and the plurality of liquid separation structures are arranged one-to-one corresponding to the heat exchange inlets of the plurality of heat exchange tubes 20, and the liquid separation structure includes a plurality of liquid separation holes 31, and the distance between the liquid separation holes 31 and the corresponding heat exchange tubes 20 is the same. With such an arrangement, when the refrigerant passes through the liquid separation holes 31, the two-phase refrigerant can be evenly mixed due to throttling acceleration, and then sprayed into the heat exchange tubes 20. In addition, since a plurality of liquid separation holes 31 are provided, the refrigerant is prevented from being blocked at the liquid separation holes 31 and cannot flow smoothly, thereby ensuring the liquid separation effect of the liquid separation plate 30, thereby improving the heat exchange efficiency of the heat exchanger. Such arrangement can prevent the refrigerant from being blocked at the liquid separation hole 31 and causing excessive pressure in the collecting pipe 10 , thereby preventing the collecting pipe 10 and the liquid separation plate 30 from being damaged and increasing the service life of the collecting pipe 10 and the liquid separation plate 30 .

[0028] The liquid collecting pipe 10 further has a liquid inlet and a plurality of liquid outlets 12, both of which are connected to the liquid collecting chamber 11, and the plurality of liquid outlets 12 are arranged at intervals along the extension direction of the liquid collecting pipe 10, and the liquid outlets 12 are used to communicate with the heat exchange tube 20. The collecting chamber 111 is connected to the liquid inlet of the liquid collecting pipe 10, the liquid separation chamber 112 is connected to the liquid outlet 12 of the liquid collecting pipe 10, and the liquid outlet 12 is connected to the heat exchange tube 20.

[0029] Specifically, in the prior art, a plurality of microchannels are provided in the heat exchange tube 20, and the plurality of microchannels are arranged at intervals along the width direction of the heat exchange tube 20. A plurality of liquid separation holes 31 of the liquid separation structure corresponding to the heat exchange tube 20 are also arranged along the width direction of the heat exchange tube 20. Such an arrangement can further improve the liquid separation uniformity of the liquid separation plate 30, thereby further improving the heat exchange effect of the heat exchanger.

[0030] Furthermore, the distance A between the heat exchange tube 20 and the separator plate 30 is set between 1 mm and 5 mm. Among them, when the distance between the heat exchange tube 20 and the separator plate 30 is less than 1 mm, when the staff welds the heat exchange tube 20 to the liquid outlet 12, it is very easy to weld the heat exchange tube 20 and the separator plate 30 or the separator plate 30 and the collecting pipe 10 together, which increases the processing difficulty of the staff; when the distance between the heat exchange tube 20 and the separator plate 30 is greater than 5 mm, the refrigerant cannot be sprayed into the heat exchange tube 20, and the refrigerant in the separator cavity 112 is very easy to separate the gas phase refrigerant and the liquid phase refrigerant, thereby causing uneven liquid separation of the separator plate 30, affecting the heat exchange efficiency of the heat exchanger. Therefore, setting the distance between the heat exchange tube 20 and the separator plate 30 between 1 mm and 5 mm can not only reduce the processing difficulty of the staff, but also ensure that the separator plate 30 separates evenly and ensures the heat exchange efficiency of the heat exchanger. Optionally, the distance between the heat exchange tube 20 and the liquid separation plate 30 can be set to 1 mm, 3 mm or 5 mm. In the present application, the distance between the heat exchange tube 20 and the liquid separation plate 30 is set to 3 mm.

[0031] The number of the liquid separation holes 31 of each liquid separation structure is set between 2 and 10. When the number of the liquid separation holes 31 of each liquid separation structure is less than 2, the refrigerant is easily blocked at the liquid separation holes 31 and cannot flow smoothly, thereby reducing the liquid separation effect of the liquid separation plate 30, and further reducing the heat exchange efficiency of the heat exchanger; when the number of the liquid separation holes 31 of each liquid separation structure is greater than 10, the refrigerant cannot effectively produce a throttling effect when flowing at the liquid separation holes 31, resulting in the inability to mix the gas phase refrigerant and the liquid phase refrigerant uniformly, thereby reducing the liquid separation uniformity of the liquid separation plate 30. Therefore, the number of the liquid separation holes 31 of each liquid separation structure is set between 2 and 10, so that the gas phase refrigerant and the liquid phase refrigerant can be mixed uniformly under the premise of ensuring the smooth flow of the refrigerant at the liquid separation holes 31, and the liquid separation uniformity of the liquid separation plate 30 is ensured. Optionally, the number of the liquid separation holes 31 of each liquid separation structure can be set to 2, 5 or 10. In the present application, each liquid separation structure includes 5 liquid separation holes 31.

[0032] Specifically, the diameter B of the liquid separation hole 31 is set between 0.5 mm and 2 mm. Among them, when the diameter of the liquid separation hole 31 is less than 0.5 mm, the refrigerant is very likely to be blocked at the liquid separation hole 31 and cannot flow smoothly, thereby reducing the liquid separation effect of the liquid separation plate 30, and further reducing the heat exchange efficiency of the heat exchanger; when the diameter of the liquid separation hole 31 is greater than 2 mm, the refrigerant cannot effectively produce a throttling effect when flowing at the liquid separation hole 31, resulting in the gas phase refrigerant and the liquid phase refrigerant cannot be mixed evenly, thereby reducing the liquid separation uniformity of the liquid separation plate 30. Therefore, the diameter of the liquid separation hole 31 is set between 0.5 mm and 2 mm, so that the gas phase refrigerant and the liquid phase refrigerant can be mixed evenly under the premise of ensuring the smooth flow of the refrigerant at the liquid separation hole 31, and the liquid separation uniformity of the liquid separation plate 30 is ensured. Optionally, the diameter of the liquid separation hole 31 can be set to 0.5 mm, 1.2 mm or 2 mm. In the present application, the diameter of the liquid separation hole 31 is set to 1.2 mm.

[0033] Furthermore, in the present application, the diameters of the liquid separation holes in the multiple liquid separation structures are the same.

[0034] The heat exchanger further includes a plurality of partitions 40, which are arranged at intervals along the length direction of the liquid collecting tube 10, and the partitions 40 are sleeved on the liquid separation plate 30. The liquid separation plate 30 divides the liquid collecting chamber 11 into a plurality of sub-chambers 113, each of which contains at least one liquid separation structure, and the plurality of sub-chambers 113 are connected to at least one heat exchange tube 20. With such an arrangement, the refrigerant can be diverted into different sub-chambers 113 first, and then diverted into different heat exchange tubes 20 through the liquid separation plate 30, further ensuring the uniformity of liquid separation by the liquid separation plate 30.

[0035] Optionally, a main chamber may be provided in the liquid collecting chamber 11 , the main chamber being in communication with the plurality of sub-chambers 113 , and the main chamber being in communication with the liquid inlet.

[0036] Specifically, in the present application, multiple partitions 40 directly divide the liquid collecting chamber 11 into multiple sub-chambers 113, there is no main chamber in the liquid collecting chamber 11, and multiple liquid inlets are provided on the liquid collecting pipe 10, and the multiple liquid inlets are arranged one-to-one with the multiple sub-chambers 113, and the sub-chambers 113 are connected with the corresponding liquid inlets. Such a configuration facilitates the refrigerant to enter the sub-chamber 113. At the same time, it can reduce the uneven liquid separation of the refrigerant due to the influence of gravity, and the staff can control the flow rate of the refrigerant entering different sub-chambers 113, further ensuring the liquid separation uniformity of the liquid separation plate 30.

[0037] Among them, optionally, multiple liquid inlets are arranged at equal intervals, such an arrangement can ensure the uniformity of the refrigerant flowing into different sub-chambers 113; or, each liquid inlet is correspondingly arranged in the middle of each sub-chamber 113, such an arrangement can ensure the uniformity of the refrigerant flowing into the sub-chamber 113 and then flowing into different heat exchange tubes 20.

[0038] However, in the present application, a plurality of liquid inlets are arranged at equal intervals, and each liquid inlet is correspondingly arranged in the middle of each sub-chamber 113. Such an arrangement can ensure the uniformity of the refrigerant flowing into different heat exchange tubes 20.

[0039] Specifically, the number of liquid outlets 12 in each sub-chamber 113 is the same. This arrangement can further facilitate the staff to control the flow of refrigerant delivered to different sub-chambers 113, reduce the difficulty of the staff's work, and further ensure the uniformity of liquid separation of the heat exchanger.

[0040] Furthermore, the plurality of liquid outlets 12 are arranged at equal intervals. This arrangement can further ensure the uniformity of the refrigerant flowing into different heat exchange tubes 20 .

[0041] The periphery of the partition 40 is adapted to the inner wall structure of the liquid collecting chamber 11. In this way, the partition 40 can support the liquid separation plate 30, thereby improving the stability of the liquid separation plate 30, and further ensuring the normal liquid separation work of the liquid separation plate 30. In the present application, the partition 40 is fixedly connected to the liquid separation plate 30. Optionally, the partition 40 is also fixedly connected to the inner wall of the liquid collecting chamber 11.

[0042] In this application, the heat exchanger may be a microchannel heat exchanger.

[0043] like Figure 3 As shown, the second embodiment of the utility model provides a heat exchanger, which is different from the first embodiment in that the sizes of at least two liquid separation holes 31 of each liquid separation structure are not equal. In this way, the flow rate of the refrigerant when passing through different liquid separation holes 31 of the liquid separation plate is different, so that the refrigerant forms a disturbance in the liquid separation cavity, thereby improving the uniformity of the refrigerant liquid separation.

[0044] Optionally, in the same liquid separation structure, the diameter of the liquid separation hole 31 in the middle is relatively small, and the diameters of the liquid separation holes 31 on both sides gradually increase in a direction away from the liquid separation hole 31 in the middle. Alternatively, in the same liquid separation structure, the diameter of the liquid separation hole 31 in the middle is relatively large, and the diameters of the liquid separation holes 31 on both sides gradually decrease in a direction away from the liquid separation hole 31 in the middle.

[0045] like Figure 4As shown, the third embodiment of the utility model provides a heat exchanger, which is different from the first embodiment in that the multiple liquid separation holes 31 of each liquid separation structure are equal in size, and the liquid separation holes 31 of at least two liquid separation structures are unequal in size. In this way, the refrigerant will form disturbances between different liquid separation structures, thereby improving the uniformity of refrigerant liquid separation.

[0046] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0047] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0048] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0049] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0050] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0051] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A heat exchanger, characterized in that: The heat exchanger comprises: A liquid collecting pipe (10), wherein the liquid collecting pipe (10) has a liquid collecting chamber (11); a plurality of heat exchange tubes (20), the plurality of heat exchange tubes (20) being arranged at intervals along the length direction of the liquid collecting tube (10), and the plurality of heat exchange tubes (20) being all in communication with the liquid collecting chamber (11); A liquid separation plate (30) is arranged in the liquid collecting chamber (11). The liquid separation plate (30) is extended along the length direction of the liquid collecting tube (10) to separate the liquid collecting chamber (11) into a collecting chamber (111) and a liquid separation chamber (112). The liquid separation chamber (112) is connected to the heat exchange tube. A plurality of liquid separation structures are arranged on the liquid separation plate (30). The plurality of liquid separation structures are arranged at intervals along the extension direction of the liquid separation plate (30). The plurality of liquid separation structures are arranged in a one-to-one correspondence with the inlets of the plurality of heat exchange tubes (20). The liquid separation structure connects the collecting chamber (111) and the liquid separation chamber (112). The liquid separation structure includes a plurality of liquid separation holes (31). The plurality of liquid separation holes (31) of the liquid separation structure are at the same distance from the corresponding inlets of the heat exchange tubes (20).

2. The heat exchanger according to claim 1, characterized in that: The distance A between the heat exchange tube (20) and the liquid separation plate (30) is set between 1 mm and 5 mm.

3. The heat exchanger according to claim 1, characterized in that: The number of the liquid separation holes (31) of each liquid separation structure is set between 2 and 10.

4. The heat exchanger according to claim 1, characterized in that: The diameter B of the liquid separation hole (31) is set between 0.5 mm and 2 mm.

5. The heat exchanger according to claim 1, characterized in that: The sizes of at least two liquid separation holes (31) of each liquid separation structure are unequal.

6. The heat exchanger according to claim 1, characterized in that The multiple liquid separation holes (31) of each of the liquid separation structures are of equal size, and the liquid separation holes (31) of at least two of the liquid separation structures are of unequal size.

7. The heat exchanger according to any one of claims 1 to 6, characterized in that: The heat exchanger further comprises a plurality of partitions (40), wherein the plurality of partitions (40) are spaced apart along the length direction of the liquid collecting tube (10), wherein the partitions (40) are sleeved on the liquid separation plate (30), and wherein the liquid separation plate (30) divides the liquid collecting chamber (11) into a plurality of sub-chambers (113), wherein each of the sub-chambers (113) comprises at least one liquid separation structure, and the plurality of sub-chambers (113) are all connected to at least one of the heat exchange tubes (20).

8. The heat exchanger according to claim 7, characterized in that The liquid collecting pipe (10) is provided with a plurality of liquid inlets, and the plurality of liquid inlets are arranged in a one-to-one correspondence with the plurality of sub-chambers (113).

9. The heat exchanger according to claim 8, characterized in that The plurality of liquid inlets are arranged at equal intervals; and / or each of the liquid inlets is correspondingly arranged in the middle of each of the sub-chambers (113).

10. The heat exchanger according to claim 7, characterized in that The periphery of the partition (40) is adapted to the inner wall structure of the liquid collecting chamber (11).

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