Heat exchange machine core and heat exchanger with same

Abstract

The heat exchange machine core comprises N quadrilateral heat exchange plates, in every two adjacent quadrilateral heat exchange plates, the first edge of the first quadrilateral heat exchange plate is connected with the second edge of the second quadrilateral heat exchange plate in an edge folding mode, and the first edge of the first quadrilateral heat exchange plate is connected with the second edge of the second quadrilateral heat exchange plate in an edge folding mode. And the third edge of the first quadrilateral heat exchange plate is connected with the fourth edge of the second quadrilateral heat exchange plate in a folding manner. The heat exchange machine core can recycle heat in waste gas.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil fume waste gas treatment technical field especially relates to heat exchange machine core and have its heat exchanger. BACKGROUND

[0002] China is a big printing and dyeing country, and the textile printing and dyeing industry is one of the pillar industries in China. Printing and dyeing is a high energy consumption industry, and the heat in the waste gas is lost in large quantities, not only wasting energy, but also causing immeasurable harm to humans and the environment. Moreover, the discharged oil fume waste gas is complex in composition and strong in adhesion, and is easy to form oil dirt over time. When recovering heat with a conventional heat exchanger, the heat exchanger is easily blocked by fiber dust and oil fume, reducing the waste heat recovery rate of the heat exchanger, resulting in large investment in recovery equipment, short cleaning and maintenance cycle, high recovery cost, and limiting wide range of application. The production welding process of the conventional plate heat exchanger is difficult and costly.

[0003] Therefore, how to efficiently recover the heat in these waste gases and improve the production efficiency of the heat exchanger has become a problem to be solved. SUMMARY

[0004] Therefore, the main purpose of the utility model is to provide a heat exchange machine core and a heat exchanger with the same.

[0005] To achieve the above purpose, the technical scheme of the utility model is as follows: a heat exchange machine core, comprising: N quadrilateral heat exchange plates board1, board2,..., board N , N quadrilateral heat exchange plates board1, board2,..., board N are arranged side by side and parallel to each other, wherein N is a natural number and N≥2; the edges of each quadrilateral heat exchange plate are sequentially surrounded by a first edge, a second edge, a third edge and a fourth edge, wherein the first edge is provided with a first folded edge folded towards a first surface, the second edge is provided with a second folded edge folded towards a second surface, the third edge is provided with a third folded edge folded towards the first surface, the fourth edge is provided with a fourth folded edge folded towards the second surface, and the first surface and the second surface are two different surfaces of the quadrilateral heat exchange plate; the first folded edge of the quadrilateral heat exchange plate board i is connected with the second folded edge of the quadrilateral heat exchange plate board i-1 , the third folded edge of the quadrilateral heat exchange plate board i is connected with the fourth folded edge of the quadrilateral heat exchange plate board i-1 , the second folded edge of the quadrilateral heat exchange plate board i is connected with the first folded edge of the quadrilateral heat exchange plate board i+1 , and the fourth folded edge of the quadrilateral heat exchange plate board i is connected with the second folded edge of the quadrilateral heat exchange plate board i+1The third flange of the fourth flange is connected with the fourth flange of the fourth quadrilateral heat exchange plate board.

[0006] As a kind of improvement of the utility model embodiment, including: shell, the shell is provided with first air inlet, first air outlet, second air inlet and second air outlet, N quadrilateral heat exchange plate is located in the inside of the shell;All quadrilateral heat exchange plate board i The first gap between the first side and the second side of quadrilateral heat exchange plate board i-1 All communicate with first air inlet, all quadrilateral heat exchange plate board i The third gap between the third side and the fourth side of quadrilateral heat exchange plate board i-1 All communicate with first air outlet, all quadrilateral heat exchange plate board i The second gap between the second side and the second side of quadrilateral heat exchange plate board i+1 All communicate with second air inlet, all quadrilateral heat exchange plate board i The fourth gap between the fourth side and the third side of quadrilateral heat exchange plate board i+1 All communicate with second air inlet.

[0007] As a kind of improvement of the utility model embodiment, in all quadrilateral heat exchange plates, first flange is provided with first inner folding plate away from the side of quadrilateral heat exchange plate board i First inner folding plate and quadrilateral heat exchange plate board i Different face towards first flange respectively;Second flange is provided with second outer folding plate away from the side of quadrilateral heat exchange plate board i Second outer folding plate and quadrilateral heat exchange plate board i Different face towards second flange respectively;Fourth flange is provided with fourth inner folding plate away from the side of quadrilateral heat exchange plate board i Fourth inner folding plate and quadrilateral heat exchange plate board i Different face towards fourth flange respectively;Third flange is provided with third outer folding plate away from the side of quadrilateral heat exchange plate board i Third outer folding plate and quadrilateral heat exchange plate board i Different face towards third flange respectively;

[0008] The first flange of the first flange of the quadrilateral heat exchange plate board i Second flange of quadrilateral heat exchange plate board i-1 Third flange of the third flange of the quadrilateral heat exchange plate board i Fourth flange of the fourth flange of the quadrilateral heat exchange plate board i-1 Third flange of the third flange of the quadrilateral heat exchange plate board iThe second flange of the first flange and the quadrilateral heat exchange plate board i+1 The first flange of the first flange and the quadrilateral heat exchange plate board i The fourth flange of the fourth flange and the quadrilateral heat exchange plate board i+1 The third flange of the third flange and the quadrilateral heat exchange plate board i The first inner flange of the first inner flange and the quadrilateral heat exchange plate board i-1 The second outer flange of the second outer flange and the quadrilateral heat exchange plate board i The third outer flange of the third outer flange and the quadrilateral heat exchange plate board i-1 The fourth inner flange of the fourth inner flange and the quadrilateral heat exchange plate board i The second outer flange of the second outer flange and the quadrilateral heat exchange plate board i+1 The first inner flange of the first inner flange and the quadrilateral heat exchange plate board i The fourth inner flange of the fourth inner flange and the quadrilateral heat exchange plate board i+1 The third outer flange of the third outer flange and the quadrilateral heat exchange plate board

[0009] As a kind of improvement of the utility model embodiment, the quadrilateral heat exchange plate board i It is provided with towards the quadrilateral heat exchange plate board i+1 Numerous first protrusions, the quadrilateral heat exchange plate board i+1 It is provided with towards the quadrilateral heat exchange plate board i Numerous second protrusions, the number of first protrusion and second protrusion is same and one-to-one correspondence, and the top of mutually corresponding first protrusion and the top of second protrusion abut.

[0010] As a kind of improvement of the utility model embodiment, first protrusion and second protrusion are both hemispherical protrusion.

[0011] As a kind of improvement of the utility model embodiment, in same quadrilateral heat exchange plate, first protrusion and second protrusion all constitute several rows, and staggered arrangement.

[0012] As a kind of improvement of the utility model embodiment, first protrusion and second protrusion are all formed by plate stamping.

[0013] As a kind of improvement of the utility model embodiment, the shell is square shell, the square shell is formed by upper square plate, lower square plate and four section bars, and the both ends of each section bar are connected with one corner point in upper square plate and one corner point in lower square plate respectively;Four openings formed by four section bars constitute first air inlet, first air outlet, second air inlet and second air outlet.

[0014] The utility model embodiment further provides a heat exchanger, include: the outer frame body, a plurality of installation positions are arranged in the outer frame body, a plurality of above-mentioned heat exchange machine core, the quantity of heat exchange machine core of installation position is same, and one heat exchange machine core is installed on every installation position, the first air inlet, the first air outlet, the second air inlet and the second air outlet of heat exchange machine core are all sealed and are provided with sealing ring, every installation position is provided four annular air vents, and four annular air vents are linked with the first air inlet, the first air outlet, the second air inlet and the second air outlet respectively, the end face of every annular air vent is all the flange, the flange is all bent to the direction away from heat exchange machine core, and abuts the corresponding sealing ring.

[0015] As an improvement of the utility model embodiment, it comprises that the annular air vent is square.

[0016] The heat exchange machine core and the heat exchanger with the same provided by the utility model embodiment have the following advantages: the utility model embodiment discloses a heat exchange machine core and a heat exchanger with the same, and the heat exchange machine core comprises: N quadrilateral heat exchange plates, in two adjacent quadrilateral heat exchange plates, the first edge of the first quadrilateral heat exchange plate is connected with the second edge of the second quadrilateral heat exchange plate by flange connection, and the third edge of the first quadrilateral heat exchange plate is connected with the fourth edge of the second quadrilateral heat exchange plate by flange connection. The heat exchange machine core can efficiently recover the heat in waste gas, reduce the welding workload, improve the production efficiency, and save the cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The structural schematic diagram of the heat exchange machine core provided for the embodiment is shown in the figure;

[0018] Figure 2 And Figure 3 The structural schematic diagram of the quadrilateral heat exchange plate in the embodiment is shown in the figure;

[0019] Figure 4 The structural schematic diagram of the heat exchange machine core provided for the embodiment is shown in the figure;

[0020] Figure 5 The structural schematic diagram of the annular air vent provided for the embodiment is shown in the figure. DETAILED DESCRIPTION

[0021] The utility model will be described in detail in combination with the embodiment shown in the drawings. However, the embodiment does not limit the utility model, and the conversion of structure, method or function made by the person skilled in the art according to the embodiment is included in the protection scope of the utility model.

[0022] The following description and drawings are illustrative of the specific embodiments herein and are not intended to be limiting in any way. Parts and features of some embodiments can be included or replaced by parts and features of other embodiments. The scope of the embodiments herein includes the entire scope of the claims and all available extensions, equivalents, and variations thereof. In this document, the terms "first", "second", and the like, merely distinguish between one element and another, without necessarily requiring or implying any actual relationship or order between such elements. In fact, a first element could be termed a second element without departing from the teachings. Also, the terms "comprises", "comprising", or any other variation thereof are intended to cover a non-exclusive inclusion, such that a structure, device, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such structure, device, or apparatus. Without further limitation, an element preceded by "comprises" does not exclude additional identical elements in the structure, device, or apparatus that includes the element. Various embodiments are described in a progressive manner, each emphasizing differences from other embodiments, with reference to each other for identical or similar parts.

[0023] The terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are used only to facilitate the description herein and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility new type. In the description herein, unless otherwise specified and limited, the terms "mount", "connect", "connect" should be understood broadly, for example, it can be a mechanical connection or an electrical connection, it can be a connection between two elements, it can be a direct connection or an indirect connection through an intermediate medium, and the specific meaning of the above terms can be understood by a person of ordinary skill in the art according to the specific circumstances.

[0024] Embodiment one of the utility model provides a heat exchange core, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, comprising:

[0025] N quadrilateral heat exchange plates board1, board2,..., board N N quadrilateral heat exchange plates board1, board2,..., board N are arranged side by side and parallel to each other, wherein N is a natural number, and N≥2;

[0026] The edge of each quadrilateral heat exchange plate 1 is sequentially surrounded by a first edge, a second edge, a third edge and a fourth edge, wherein the first edge is provided with a first folded edge 11 folded to the first surface, the second edge is provided with a second folded edge 12 folded to the second surface, the third edge is provided with a third folded edge 13 folded to the first surface, and the fourth edge is provided with a fourth folded edge 14 folded to the second surface; the first surface and the second surface are two different surfaces of the quadrilateral heat exchange plate 1. i The first folded edge 11 of the quadrilateral heat exchange plate board i-1 The second folded edge 12 of the quadrilateral heat exchange plate board i The third folded edge 13 of the quadrilateral heat exchange plate board i-1 The fourth folded edge 14 of the quadrilateral heat exchange plate board i The second folded edge 12 of the quadrilateral heat exchange plate board i+1 The first folded edge 11 of the quadrilateral heat exchange plate board i The fourth folded edge 14 of the quadrilateral heat exchange plate board i+1 The third folded edge 13 of the quadrilateral heat exchange plate board ; wherein i is a natural number, 1 < i < N.

[0027] Here, as shown in Figure 1 N quadrilateral heat exchange plates board 1, board 2,..., board N N-1 cavities can be formed, and adjacent cavities are separated, and each cavity is provided with two oppositely arranged ports. In use, one of the two adjacent cavities serves as a channel for waste gas, and the other serves as a channel for low-temperature fresh air, so that the heat in the waste gas can be absorbed by the fresh air, thereby partially recovering the heat in the waste gas.

[0028] Here, the quadrilateral heat exchange plate can be a square heat exchange plate.

[0029] In this embodiment, it includes a shell 2, the shell 2 is provided with a first air inlet, a first air outlet, a second air inlet and a second air outlet, and N quadrilateral heat exchange plates are located inside the shell 2; the first edges of all quadrilateral heat exchange plates board i The second edges of all quadrilateral heat exchange plates board i-1 The third edges of all quadrilateral heat exchange plates board i The fourth edges of all quadrilateral heat exchange plates board i-1 The second edges of all quadrilateral heat exchange plates board i The fourth edges of all quadrilateral heat exchange plates boardi+1 The second gap between the second edge of the quadrilateral heat exchange board board i The fourth edge of the quadrilateral heat exchange board board i+1 The fourth gap between the third edge of the quadrilateral heat exchange board board

[0030] Here, in use, the first air inlet can be used as a waste gas inlet, the first air outlet can be used as a waste gas outlet, the second air inlet can be used as a fresh air inlet, and the second air outlet can be used as a fresh air outlet.

[0031] In this embodiment, in all the quadrilateral heat exchange boards,

[0032] The first flange 11 is provided with a first inner flange 111 away from the edge of the quadrilateral heat exchange board board i The first inner flange 111 and the quadrilateral heat exchange board board i Respectively face different surfaces of the first flange 11;

[0033] The second flange 12 is provided with a second outer flange 122 away from the edge of the quadrilateral heat exchange board board i The second outer flange 122 and the quadrilateral heat exchange board board i Respectively face different surfaces of the second flange 12;

[0034] The fourth flange 14 is provided with a fourth inner flange 141 away from the edge of the quadrilateral heat exchange board board i The fourth inner flange 141 and the quadrilateral heat exchange board board i Respectively face different surfaces of the fourth flange 14;

[0035] The third flange 13 is provided with a third outer flange 131 away from the edge of the quadrilateral heat exchange board board i The third outer flange 131 and the quadrilateral heat exchange board board i Respectively face different surfaces of the third flange 13;

[0036] The first flange 11 of the quadrilateral heat exchange board board board i The second flange 12 of the quadrilateral heat exchange board board board i-1 The third flange 13 of the quadrilateral heat exchange board board board i The fourth flange 14 of the quadrilateral heat exchange board board board i-1 The second flange 12 of the quadrilateral heat exchange board board board i The first flange 11 of the quadrilateral heat exchange board board board i+1 The fourth flange 14 of the quadrilateral heat exchange board board board i The fourth flange 14 of the quadrilateral heat exchange board boardi+1 The third folded edge connection specifically includes:

[0037] Quadrilateral heat exchange plate board i The first inner fold plate 111 and the quadrilateral heat exchange plate board i-1 The second outer fold plate 122 folded edge connection, quadrilateral heat exchange plate board i The third outer fold plate 131 and the quadrilateral heat exchange plate board i-1 The fourth inner fold plate 141 is connected by a folded edge, forming a quadrilateral heat exchange plate. i The second outer fold plate 122 and the quadrilateral heat exchange plate board i+1 The first inner folded plate 111 is connected by a folded edge, forming a quadrilateral heat exchange plate. i The fourth inner fold plate 141 and the quadrilateral heat exchange plate board i+1 The third outer fold plate 131 is connected by a folded edge.

[0038] In this embodiment, the quadrilateral heat exchange plate board i It is equipped with a quadrilateral heat exchange plate. i+1 Several first protrusions 151, quadrilateral heat exchange plate board i+1 It is equipped with a quadrilateral heat exchange plate. i A number of second protrusions 152, the number of first protrusions 151 and second protrusions 152 are the same and correspond one-to-one, and the tops of the corresponding first protrusions 151 and the tops of the second protrusions 152 abut against each other.

[0039] In this embodiment, both the first protrusion 151 and the second protrusion 152 are hemispherical protrusions.

[0040] In this embodiment, in the same quadrilateral heat exchange plate, the first protrusion 151 and the second protrusion 152 each form several rows, and are arranged in a staggered manner.

[0041] In this embodiment, both the first protrusion 151 and the second protrusion 152 are formed by stamping sheet metal.

[0042] In this embodiment, the housing 2 is a square housing, which is composed of an upper square plate, a lower square plate and four profiles. The two ends of each profile are respectively connected to a corner point of the upper square plate and a corner point of the lower square plate. The four openings formed by the four profiles constitute a first air inlet, a first air outlet, a second air inlet and a second air outlet.

[0043] Embodiment 2 of this utility model provides a heat exchanger, such as Figure 4 and Figure 5 As shown, it includes:

[0044] An outer frame body is internally provided with a plurality of mounting positions, and the heat exchange movement in the embodiment one; the number of the heat exchange movement in the mounting position is same, and one heat exchange movement is mounted in each mounting position;

[0045] The first air inlet, the first air outlet, the second air inlet and the second air outlet of the heat exchange movement are all sealed with a sealing ring 3;

[0046] Four annular air vents 4 are arranged in each mounting position, and the four annular air vents 4 are respectively communicated with the first air inlet, the first air outlet, the second air inlet and the second air outlet;

[0047] The end surface of each annular air vent 4 is a folded edge 41, the folded edge 41 is folded away from the heat exchange movement, and abuts against the corresponding sealing ring 3.

[0048] Here, the annular air vent 4 and the sealing ring 3 can play a sealing role.

[0049] In the embodiment, the annular air vent 4 is square.

[0050] It should be understood that although the present specification is described in terms of embodiments, each embodiment does not contain only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

[0051] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the utility model, and they are not used to limit the protection scope of the utility model, and equivalent embodiments or changes made without departing from the spirit of the utility model art should be included in the protection scope of the utility model.

Claims

1. A heat exchanging movement, characterized in that, Comprising: N quadrangular heat exchanging plates board1, board2,..., board N N quadrangular heat exchanging plates board1, board2,..., board N are arranged side by side and parallel to each other, wherein N is a natural number and N≥2; The edges of each quadrilateral heat exchange plate (1) are sequentially surrounded by a first edge, a second edge, a third edge and a fourth edge, wherein the first edge is provided with a first folded edge (11) folded towards a first surface, the second edge is provided with a second folded edge (12) folded towards a second surface, the third edge is provided with a third folded edge (13) folded towards the first surface, and the fourth edge is provided with a fourth folded edge (14) folded towards the second surface, the first surface and the second surface being two different surfaces of the quadrilateral heat exchange plate (1); the first folded edge (11) of the quadrilateral heat exchange plate board i is foldably connected with the second folded edge (12) of the quadrilateral heat exchange plate board i-1 , the third folded edge (13) of the quadrilateral heat exchange plate board i is foldably connected with the fourth folded edge (14) of the quadrilateral heat exchange plate board i-1 , the second folded edge (12) of the quadrilateral heat exchange plate board i is foldably connected with the first folded edge (11) of the quadrilateral heat exchange plate board i+1 , and the fourth folded edge (14) of the quadrilateral heat exchange plate board i is foldably connected with the third folded edge (13) of the quadrilateral heat exchange plate board i+1 ; wherein i is a natural number, 1 2. A heat exchanging movement according to claim 1, characterized in that 3. The heat exchange movement according to claim 2, characterized in that, A shell (2) is provided with a first air inlet, a first air outlet, a second air inlet and a second air outlet, N quadrilateral heat exchange plates are located inside the shell (2); the first gap between the first side of all the quadrilateral heat exchange plates board i and the second side of the quadrilateral heat exchange plate board i-1 is communicated with the first air inlet, the third gap between the third side of all the quadrilateral heat exchange plates board i and the fourth side of the quadrilateral heat exchange plate board i-1 is communicated with the first air outlet, the second gap between the second side of all the quadrilateral heat exchange plates board i and the second side of the quadrilateral heat exchange plate board i+1 is communicated with the second air inlet, and the fourth gap between the fourth side of all the quadrilateral heat exchange plates board i and the third side of the quadrilateral heat exchange plate board i+1 is communicated with the second air inlet. In all the quadrilateral heat exchange plates, 4. The heat exchange movement according to claim 2, characterized in that: The first flange (11) is provided with a first inner flange (111) away from the edge of the quadrilateral heat exchange board i board (1101), and the first inner flange (111) and the quadrilateral heat exchange board i board (1101) are respectively towards different surfaces of the first flange (11). The second flange (12) is provided with a second outer flange (122) which is arranged distally from the edges of the quadrangular heat exchange board i i respectively towards different faces of the second flange (12).​ The fourth flange (14) is away from the quadrilateral heat exchange plate. i The edge is provided with a fourth inner fold plate (141), the fourth inner fold plate (141) and a quadrilateral heat exchange plate board. i Each face is facing a different side of the fourth flange (14); A third flange (13) is provided distanced from the edges of the quadrangular heat exchange board board i A third outer flange (131) is provided distanced from the edges of the quadrangular heat exchange board board i Respectively towards different faces of the third flange (13). The quadrilateral heat exchange plate board i The first flange (11) and the quadrilateral heat exchange plate board i-1 The second flange (12) is connected to the quadrilateral heat exchange plate. i The third flange (13) and the quadrilateral heat exchange plate board i-1 The fourth flange (14) is connected to the quadrilateral heat exchange plate. i The second flange (12) and the quadrilateral heat exchange plate i+1 The first flange (11) is connected to the quadrilateral heat exchange plate. i The fourth flange (14) and the quadrilateral heat exchange plate i+1 The third fold (13) fold connection specifically includes: quadrangular heat exchange board i first inner folding plate (111) of the quadrangular heat exchange board i-1 second outer folding plate (122) of the quadrangular heat exchange board i third outer folding plate (131) of the quadrangular heat exchange board i-1 fourth inner folding plate (141) of the quadrangular heat exchange board i second outer folding plate (122) of the quadrangular heat exchange board i+1 first inner folding plate (111) of the quadrangular heat exchange board i fourth inner folding plate (141) of the quadrangular heat exchange board i+1 third outer folding plate (131) of the quadrangular heat exchange board 5. The heat exchange movement according to claim 4, characterized in that: Quadrilateral heat exchange plate board i It is equipped with a quadrilateral heat exchange plate. i+1 Several first protrusions (151), quadrilateral heat exchange plate board i+1 It is equipped with a quadrilateral heat exchange plate. i A number of second protrusions (152) are provided. The number of first protrusions (151) and second protrusions (152) are the same and correspond one-to-one. The tops of the corresponding first protrusions (151) and the tops of the second protrusions (152) abut against each other. The first protrusion (151) and the second protrusion (152) are both hemispherical protrusions.

6. The heat exchange movement according to claim 4, characterized in that: In the same quadrilateral heat exchange plate, the first protrusion (151) and the second protrusion (152) both constitute several rows and are arranged staggeredly.

7. The heat exchange movement according to claim 4, characterized in that: The first protrusion (151) and the second protrusion (152) are both formed by stamping a plate material.

8. The heat exchange movement according to claim 2, characterized in that, The shell (2) is a square shell, which is composed of an upper square plate, a lower square plate and four profile materials, both ends of each profile material are connected to a corner point of the upper square plate and a corner point of the lower square plate respectively, and four openings formed by the four profile materials constitute a first air inlet, a first air outlet, a second air inlet and a second air outlet. Comprising:

9. A heat exchanger, characterized by An outer frame, which is internally provided with several mounting positions, and several heat exchange movements according to any one of claims 2-8; the number of heat exchange movements in the mounting positions is the same, and one heat exchange movement is mounted in each mounting position; The first air inlet, the first air outlet, the second air inlet and the second air outlet of the heat exchange movement are all sealed with a sealing ring (3); Each mounting position is provided with four annular air vents (4), and the four annular air vents (4) are respectively connected to the first air inlet, the first air outlet, the second air inlet and the second air outlet; The end surface of each annular air vent (4) is a folded edge (41), which is folded away from the heat exchange movement and abuts against the corresponding sealing ring (3). Comprising:

10. The heat exchanger of claim 9, wherein, The annular air vent (4) is square. ​

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