Heat pipe type heat exchanger utilizing flue waste heat

Abstract

The utility model relates to the field of detection equipment, in particular to a heat pipe type heat exchanger for flue waste heat utilization, which comprises a plurality of heat pipe type heat exchange units, each heat pipe type heat exchange unit comprises a plurality of heat pipes, a mounting rack for fixing the heat pipes and a heat exchange box arranged on the upper side of the mounting rack, the heat pipes are arranged in an array in a set area, and the heat pipes are arranged in the heat exchange box. The upper section of the heat pipe extends into the heat exchange box, and the heat exchange box is provided with an inlet and an outlet; wherein the multiple heat pipe type heat exchange units are arranged one by one along a set linear area to form a heat exchanger assembly, the linear area is perpendicular to the flowing direction of flue gas in a flue, and heat exchange areas are formed in the portions, at the positions of the mounting frames, of the heat exchanger assembly; the heat exchanger further comprises two horn connectors, small-opening sections of the horn connectors are communicated with the flue, and large-opening sections of the horn connectors are connected to the portion, on the edge of the heat exchange area, of the heat exchanger assembly. According to the utility model, the installation structure of the heat pipe is improved, so that the existing problems are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection equipment field, especially a heat pipe type heat exchanger of flue waste heat utilization. BACKGROUND

[0002] The flue gas discharged by power generation equipment contains high waste heat, and the utilization of waste heat in the flue gas is a key technical link of energy saving and emission reduction. The heat pipe type heat exchanger is one of the equipment for flue gas waste heat recovery. The structural principle of the heat pipe type heat exchanger is that the liquid medium filled in the heat pipe generates steam after being heated at the hot end (one end located in the flue gas), the steam flows to the cold end (located at the heat recovery position) and condenses to release heat, thereby realizing heat transfer and completing the phase change heat transfer process.

[0003] At present, the structure of the existing heat pipe type heat exchanger is as shown in the waste heat boiler flue gas waste heat heat pipe type phase change heat exchanger disclosed in the utility model patent with the application number 202323377023.8. The heat pipe is directly installed in the lower box body and the upper cylinder body. The inventor found in the research on power generation flue gas waste heat recovery that, due to the large flue gas flow in the power generation equipment, a large number of heat pipes are required. In order to reduce the influence of the heat pipe on the flue gas flow, the lower box body is often designed to have a whole cross-sectional size larger than that of the flue, which leads to a large overall size of the lower box body and the upper cylinder body. It is difficult to preinstall the heat pipe and then transport it to the flue position. The process of assembling the heat pipe one by one at the flue is troublesome, and it is difficult to ensure the installation quality of the heat pipe due to the limitation of the on-site construction environment and equipment conditions. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above technical problems, the utility model provides a heat pipe type heat exchanger for flue waste heat utilization, which improves the installation structure of the heat pipe and effectively solves the existing problems.

[0005] In order to solve the above problems, the utility model provides a heat pipe type heat exchanger for flue waste heat utilization, which includes a plurality of heat pipe type heat exchange units, the heat pipe type heat exchange unit includes a plurality of heat pipes, a mounting bracket for fixing each heat pipe, a heat exchange box arranged on the upper side of the mounting bracket, the heat pipes are arranged in an array in a set area, and the upper section of the heat pipe extends into the heat exchange box, and the heat exchange box has an inlet and an outlet. Wherein, a plurality of heat pipe type heat exchange units are arranged one by one along a set linear area to form a heat exchanger assembly, the linear area is perpendicular to the flue gas flow direction in the flue, and the heat exchanger assembly forms a heat exchange area at the position of each mounting bracket. The heat exchanger further includes two horn interfaces, the small mouth section of the horn interface is connected in the flue, and the large mouth section is connected to the part of the heat exchanger assembly at the edge of the heat exchange area.

[0006] Further, the mounting frame comprises four columns and a plurality of horizontal plates, the horizontal plates are vertically spaced, the horizontal plates are connected between the columns, and the heat pipes are arranged inside the columns and pass through the horizontal plates.

[0007] Further, the heat exchange box has a circular cross section, the heat pipes are arranged in the cross section of the heat exchange box, the mounting frame has a rectangular area inside the mounting frame and larger than the cross section of the heat exchange box, the mounting frame is provided with uniform air pipes in the rectangular area and outside the projection area of the cross section of the heat exchange box, and the cross section of the uniform air pipes is the same as that of the heat pipes.

[0008] Further, the top and bottom of the column are respectively provided with the horizontal plates, the heat exchange box is connected to the uppermost horizontal plate, and the bottom of the heat exchange box is provided with a heat insulation layer connected to the horizontal plate at a corresponding position.

[0009] Further, the heat exchange box is provided with a bottom plate inside the heat exchange box for the heat pipes to pass through, the bottom plate is provided with a conducting pipe at a position corresponding to the heat pipe, the conducting pipe is open at the bottom and closed at the top, the heat pipe extends into the inside of the conducting pipe in the heat exchange box, and the bottom of the conducting pipe is sealingly connected to the bottom plate.

[0010] Further, the conducting pipe is a metal heat conducting pipe.

[0011] Further, the conducting pipe passes through the bottom plate from top to bottom and is formed with a limiting ring abutting against the bottom surface of the bottom plate, the limiting ring is weldingly connected to the bottom plate, and the conducting pipe is provided with a sealing ring at a position passing through the bottom plate.

[0012] Further, the heat exchange box further comprises a plurality of vertical reinforcing ribs, the reinforcing ribs are connected to the bottom plate at the bottom and to the top wall of the heat exchange box at the top.

[0013] Further, the surface of the heat pipe is provided with a nickel-chromium wear-resistant coating.

[0014] Further, the horn interface is weldingly connected to the mounting frame of the edge portion of the heat exchanger, or the horn interface is connected to the mounting frame of the edge portion of the heat exchanger through a flange.

[0015] The utility model also provides a kind of atomic absorption instrument, including the heat pipe heat exchanger of flue waste heat utilization as described above.

[0016] The utility model has the advantages that by improving the mounting structure of the heat pipe, the existing problems are effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are intended to provide further understanding of the present application, form a part of the present application, and the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the present application.

[0019] Figure 2 It is a structural schematic diagram of an embodiment of the present application. Figure 1 It is a sectional structural schematic diagram of an embodiment of the present application.

[0020] Figure 3 It is a structural schematic diagram of an embodiment of the present application. Figure 1 It is a top view structural schematic diagram of an embodiment of the present application after removing the top cover of the heat exchange box.

[0021] Figure 4 It is a sectional structural schematic diagram of an embodiment of the present application. Figure 2 It is a sectional structural schematic diagram of an embodiment of the present application.

[0022] Figure 5 It is a perspective view of a heat pipe type heat exchange unit in the present application.

[0023] 1, heat pipe; 2, mounting frame; 201, vertical column; 202, horizontal plate; 3, heat exchange box; 4, inlet; 5, outlet; 6, flue; 7, heat exchange area; 8, horn interface; 9, air equalizing pipe; 10, heat insulation layer; 11, bottom plate; 12, conduction pipe; 13, limiting ring; 14, sealing ring; 15, reinforcing rib; 16, heat exchanger assembly. DETAILED DESCRIPTION

[0024] In order to more clearly explain the overall concept of the present application, the following will be described in detail in an exemplary manner in combination with the drawings.

[0025] It should be noted that in the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other manners different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0026] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0027] In the utility model, unless another explicit provision and limitation, the terms "mount", "connect", "connect", "fix" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication of two elements inside or the interaction relationship of two elements.But note that the direct connection is that the two main bodies between the connection are not connected through the excessive structure construction connection relationship, only through the connection structure is connected to form a whole.For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] In the utility model, unless another explicit provision and limitation, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium.In the description of the specification, the description of the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model.In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0029] In the utility model, as Figures 1 to 5 Indicated, a flue waste heat utilization heat pipe type heat exchanger is provided, including multiple heat pipe type heat exchange units, the heat pipe type heat exchange unit includes multiple heat pipes 1, the mounting bracket 2 for fixing each heat pipe 1, the heat exchange box 3 arranged on the upper side of the mounting bracket 2, the heat pipe 1 is arrayed in the set area, and the upper section of the heat pipe 1 is inserted into the heat exchange box 3, the heat exchange box 3 has import 4 and export 5;Wherein, multiple heat pipe type heat exchange units are arranged along the set linear region to form heat exchanger assembly 16, the linear region is perpendicular to the flue gas flow direction in the flue 6, and the part of the heat exchanger assembly 16 at each mounting bracket 2 position forms a heat exchange region 7;The heat exchanger further includes two horn interfaces 8, the horn interface 8, the small mouth section of the horn interface 8 is connected in the flue 6, and the large mouth section is connected to the part of the heat exchanger assembly 16 at the edge of the heat exchange region 7.

[0030] The heat pipe type heat exchanger of the utility model can be processed in a special processing place when building to process a single heat pipe type heat exchange unit to complete the installation and fixation of the heat pipe 1 at the corresponding position of the single heat exchange box 3 in the mounting bracket 2 and the heat exchange box 3. Figure 1As shown, along the set linear region, each heat pipe heat exchange unit is arranged, and the horn interface 8 is connected to the flue 6 and the heat exchanger assembly 16, and then the installation of the whole flue gas flow heat exchange region 7 is completed. When part of the heat pipe 1 needs to be repaired and replaced, the corresponding heat pipe heat exchange unit can be removed and hoisted outside for maintenance and maintenance, so that the maintenance and maintenance can be facilitated.

[0031] The technical advantage of the utility model lies in that a single heat pipe heat exchange unit constitutes an independent heat absorption and heat release heat recovery system, can be assembled in a dedicated processing place, can facilitate the control of the fixing quality of the heat pipe 1 and the mounting frame 2, the sealing property between the heat pipe 1 and the heat exchange box 3, and compared with the prior art, the on-site construction time and difficulty are also reduced. Moreover, the modular heat pipe heat exchange unit is adopted, and transportation, hoisting, heat pipe 1 maintenance and replacement are facilitated.

[0032] In the preferred embodiment, for the structure of the utility model, further specifically, the mounting frame 2 includes four columns 201 and a plurality of horizontal plates 202, each horizontal plate 202 is arranged vertically and spaced, the horizontal plate 202 is connected between each column 201, and the heat pipe 1 is arranged inside each column 201 and passes through the horizontal plate 202.

[0033] As shown, each horizontal plate 202 can be used to segmentally fix the heat pipe 1, so as to further improve the fixing stability of the heat pipe 1, and the four columns 201 are used as the overall support structure of the mounting frame 2, so that the structure of the mounting frame 2 is stable and regular. When assembling, as shown, the columns 201 of adjacent heat pipe heat exchange units are close to each other and easy to splice and connect.

[0034] In the preferred embodiment, for the structure of the utility model, further specifically, as shown in Figure 1 and 3 , 5, the cross section of the heat exchange box 3 is circular, and the heat pipes 1 are arranged in the cross section region of the heat exchange box 3; as shown in Figure 3 , the inside of the mounting frame 2 forms a rectangular region with a larger cross section than the cross section of the heat exchange box 3, and the mounting frame 2 is arranged with an air equalizing pipe 9 in the rectangular region inside the heat exchange box 3, and the cross section of the air equalizing pipe 9 is the same as the cross section of the heat pipe 1.

[0035] As shown in the figure, the cross section of the heat exchange box 3 is circular, compared with the form that the heat exchange box 3 is square, the utility model can make that the heat absorption medium (water or air) in the heat exchange box 3 is not easy to produce flow dead angle in the inside, and, the circular heat exchange box 3 structure of the utility model is not easy to produce sharp corner stress concentration, can further improve the structural stability of the heat exchange box 3, prevent the heat exchange box 3 from leaking.

[0036] The utility model discloses a wind pipe 9 is arranged, can make the inside rectangular area of mounting bracket 2 for installing the rod shape distribution of uniformity in heat pipe 1, in further make the smoke flow to the position of heat pipe 1 can flow relatively evenly, prevent the air flow disorder caused by the position lack of rod shape of wind pipe 9.

[0037] For the setting of uniform wind, preferably can adopt shorter heat pipe 1 to make.Or adopt the metal rod or ceramic rod of cross section size and heat pipe 1 consistent.

[0038] In the preferred embodiment, for the structure of the utility model, further specifically, the top and bottom of the column 201 are respectively provided with the horizontal plate 202, the heat exchange box 3 is connected to the uppermost horizontal plate 202, and the bottom of the heat exchange box 3 is provided with a heat insulation layer 10 connected to the corresponding horizontal plate 202.

[0039] As shown in the figure, by setting the heat insulation layer 10, the heat conduction of the liquid heat box mounting rack 2 in the heat exchange box 3 can be insulated, and the heat insulation layer 10 can further separate the flue gas below the uppermost horizontal plate 202.

[0040] Among them, for the setting of the heat insulation layer 10, preferably, mineral wool felt heat insulation layer 10 or aluminum silicate felt heat insulation layer 10 or calcium silicate board heat insulation layer 10 can be used, or filler heat insulation can also be used.

[0041] In the preferred embodiment, for the structure of the utility model, further specifically, the inside of the heat exchange box 3 is provided with a bottom plate 11 for the heat pipe 1 to pass through, the bottom plate 11 is provided with a conduction pipe 12 at the position corresponding to the heat pipe 1, the bottom of the conduction pipe 12 is open, and the top is closed, the heat pipe 1 extends into the inside of the conduction pipe 12 in the heat exchange box 3, and the bottom of the conduction pipe 12 is sealingly connected with the bottom plate 11.

[0042] As shown in the figure, the bottom of the conduction pipe 12 is open, and the top is closed, by setting the conduction pipe 12, the conduction pipe 12 can be sealingly connected with the horizontal plate 202 in advance during processing, to prevent water leakage or air leakage from occurring at the position where the heat pipe 1 passes through the heat exchange box 3, and to reduce the connection processing difficulty between the heat pipe 1 and the bottom plate 11, and the heat pipe 1 can be conveniently disassembled and replaced when necessary.

[0043] For the setting of the heat pipe 1, the conducting pipe 12 is arranged as a metal heat pipe 1, so that the conducting pipe 12 and the bottom plate 11 can be conveniently connected, and the conducting pipe 12 has high heat conduction efficiency, and preferably, the conducting pipe 12 is made of a copper pipe or an aluminum pipe having high heat conduction efficiency.

[0044] In the preferred embodiment, for the structure of the utility model, further specifically, the conducting pipe 12 passes through the bottom plate 11 from top to bottom to form a limiting ring 13 abutting against the bottom surface of the bottom plate 11, the limiting ring 13 is welded to the bottom plate 11, and the conducting pipe 12 is provided with a sealing ring 14 at the position passing through the bottom plate 11.

[0045] As shown in the figure, the limiting ring 13 is welded to the bottom surface of the bottom plate 11, so that the conducting pipe 12 and the bottom plate 11 can be stably connected, and the sealing between the conducting pipe 12 and the bottom plate 11 can be formed by welding to prevent the heat exchange tank 3 from leaking water or gas. Moreover, the sealing stability between the conducting pipe 12 and the bottom plate 11 can be further improved by using the sealing ring 14 at the position passing through the bottom plate 11.

[0046] For the fixing mode of the sealing ring 14, in the preferred embodiment, as shown in the figure, the sealing ring 14 is interference-fitted on the outside of the conducting pipe 12. In the alternative embodiment, a pressing block can be threadedly screwed on the outside of the conducting pipe 12 to press and fix the sealing ring 14. Alternatively, the pressing block is welded to the upper side of the sealing ring 14 to press and fix the sealing ring 14.

[0047] In the preferred embodiment, for the structure of the utility model, further specifically, the heat exchange tank 3 further comprises a plurality of vertically arranged reinforcing ribs 15, the reinforcing ribs 15 are connected to the bottom plate 11 at the bottom and connected to the top wall of the heat exchange tank 3 at the top. As shown in the figure, by arranging the reinforcing ribs 15, the shape stability of the bottom plate 11 can be maintained by the reinforcing ribs 15 to prevent the deformation of the bottom plate 11 from causing the heat pipe 1 to be bent and deformed.

[0048] In the preferred embodiment, for the structure of the utility model, further specifically, the surface of the heat pipe 1 is provided with a nickel-chromium wear-resistant coating. By arranging the wear-resistant coating on the surface of the heat pipe 1, the resistance of the heat pipe 1 to wear caused by the flue gas during the flow of the flue gas can be increased, and the use stability of the heat pipe 1 can be further improved. Preferably, the nickel-chromium wear-resistant coating can be processed by a supersonic arc spraying process, which can improve the use stability of the heat pipe 1 at a relatively small increase in processing cost.

[0049] For the wear resistance treatment of the heat pipe 1, in alternative embodiments, the heat pipe 1 can also be subjected to a side enamelling treatment, a laser cladding treatment, a nickel infiltration treatment, etc. The flow rate of the flue gas can also be optimized to reduce the flow rate of the flue gas on the basis that the flow rate of the flue gas can meet the blowing ash capacity of the heat pipe 1, and in preferred embodiments, the design value of the flow rate of the flue gas is selected to be 8.59 m / s to 9 m / s.

[0050] In preferred embodiments, for the structure of the utility model, further specifically, the horn interface 8 is welded to the mounting frame 2 of the edge portion of the heat exchanger; as shown in the figure, the bottom plate 11 of the horn interface 8 directly serves as the bottom plate 11 of the entire heat exchanger, and in processing, the bottom plates 11 of the two horn interfaces 8 are first spliced and connected, then the heat pipe type heat exchange units are assembled on the upper side of the bottom plate 11, and then the side wall and the top wall of the horn interface 8 are welded one by one to form a complete horn interface 8.

[0051] For the mounting frame 2 (the outermost column 201 and the uppermost horizontal plate 202 of the heat exchanger assembly 16) connecting the edge of the horn interface 8 and the edge of the heat exchanger assembly 16, in the illustrated embodiment, a welding connection mode is adopted, which can maintain the stability and sealing performance of the edge connection of the horn interface 8.

[0052] For the closure of the heat pipe 1 at the most edge side of the heat exchanger assembly 16, preferably, the side plate of the horn interface 8 can be extended to this position for welding; alternatively, a separate closure plate can also be used for closure, which will not be described here.

[0053] For the connection of the horn interface 8 and the mounting frame 2 of the edge portion of the heat exchanger, in alternative embodiments, the horn interface 8 and the mounting frame 2 of the edge portion of the heat exchanger can also be connected through a flange, specifically, the side wall and the top wall of the horn interface 8 are connected to the corresponding column 201 and horizontal plate 202 through a flange bolt, and the side wall and the bottom wall of the horn interface 8 can be welded.

[0054] For the display in the drawings, it should be noted that in Figure 3 , in order to better show the distribution of the heat pipe 1 and the air equalizing pipe 9, the arrangement position of the air equalizing pipe 9 is shown together after the top cover of the heat exchange box 3 is removed, and in Figure 5 , in order to facilitate the display of the arrangement mode of the reinforcing rib 15 and the conduction pipe 12, the top cover of the heat exchange box 3 is removed.

[0055] The various embodiments in the specification are described in progressive manner, and the same or similar parts among the various embodiments can be mutually referred to, and each embodiment focuses on the difference from other embodiments. In particular, for the system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiments.

[0056] The above only describes the embodiments of the present application and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A heat pipe heat exchanger for flue gas heat recovery, characterized by, The heat exchanger comprises a plurality of heat pipe heat exchange units, each of which comprises a plurality of heat pipes, a mounting frame for fixing the heat pipes, and a heat exchange box arranged on the upper side of the mounting frame, wherein the heat pipes are arranged in an array in a set area, and the upper section of the heat pipes extends into the heat exchange box, and the heat exchange box has an inlet and an outlet. The plurality of heat pipe heat exchange units are arranged in sequence along a set linear area to form a heat exchanger assembly, the linear area is perpendicular to the direction of flue gas flow in the flue, and the heat exchanger assembly forms a heat exchange area at the position of each mounting frame. The heat exchanger further comprises two horn-shaped interfaces, the small opening section of the horn-shaped interface is connected to the flue, and the large opening section is connected to the part of the heat exchanger assembly at the edge of the heat exchange area.

2. A heat pipe exchanger for flue gas heat recovery according to claim 1, characterized in that The mounting frame comprises four vertical columns and a plurality of horizontal plates, each of which is arranged in a vertical array, the horizontal plates are connected between each of the vertical columns, and the heat pipes are arranged inside each of the vertical columns and pass through the horizontal plates.

3. A heat pipe exchanger for flue gas heat recovery according to claim 2, characterized in that The cross section of the heat exchange box is circular, the heat pipes are arranged in an array in the cross section area of the heat exchange box, the inside of the mounting frame forms a rectangular area with a larger cross section than the horizontal base of the heat exchange box, the part of the mounting frame inside the rectangular area and outside the projection area of the cross section of the heat exchange box is arranged in an array with an air equalizing pipe, and the cross section of the air equalizing pipe is the same as that of the heat pipe.

4. A heat pipe exchanger for flue gas heat recovery according to claim 2, wherein The top and bottom of the vertical column are respectively provided with the horizontal plates, the heat exchange box is connected to the uppermost horizontal plate, and the bottom of the heat exchange box is provided with a heat insulation layer connected to the corresponding horizontal plate.

5. A heat pipe exchanger for flue gas heat recovery according to claim 1 or 4, characterized in that The inside of the heat exchange box is provided with a bottom plate through which the heat pipes pass, the bottom plate is provided with a conducting pipe at the position corresponding to the heat pipe, the bottom of the conducting pipe is open, and the top is closed, the heat pipe extends into the inside of the conducting pipe in the heat exchange box, and the bottom of the conducting pipe is sealingly connected to the bottom plate.

6. A heat pipe exchanger for flue gas heat recovery according to claim 5, wherein The conducting pipe is a metal heat conducting pipe.

7. A heat pipe exchanger for flue gas heat recovery according to claim 5, wherein The conducting pipe passes through the bottom plate from top to bottom to form a limiting ring in abutment with the bottom surface of the bottom plate, the limiting ring is weldingly connected to the bottom plate, and the conducting pipe is provided with a sealing ring at the position passing through the bottom plate.

8. A heat pipe exchanger for flue gas heat recovery according to claim 5, wherein The heat exchange box further comprises a plurality of vertically arranged reinforcing ribs, the bottom of the reinforcing rib is connected to the bottom plate, and the top is connected to the top wall of the heat exchange box.

9. A heat pipe exchanger for flue gas heat recovery according to claim 1, wherein The surface side of the heat pipe is provided with a nickel-chromium wear-resistant coating.

10. A heat pipe exchanger for flue gas heat recovery according to claim 1, wherein The horn-shaped interface is weldingly connected to the mounting frame of the edge part of the heat exchanger. Alternatively, the horn-shaped interface is connected to the mounting frame of the edge part of the heat exchanger through a flange.

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