Heat exchanger

Abstract

The utility model provides a heat exchanger which comprises a shell, a plurality of rows of harmonica-shaped tubes and a plurality of fins, the harmonica-shaped tubes and the fins are arranged in a stacked mode in the height direction of the shell, at least one fin is arranged between every two adjacent rows of harmonica-shaped tubes, the harmonica-shaped tubes are provided with first channels for refrigerant or engine oil to circulate, and the second channels are provided with second channels for refrigerant or engine oil to circulate. Second channels for cooling liquid to flow are formed between the harmonica-shaped tubes and the fins, first liquid reversing channels and second liquid reversing channels are arranged in the shell, and the refrigerant or the engine oil flows through the first channels through the first liquid reversing channels and flows through the second channels through the second liquid reversing channels. And the cooling liquid flows through the second channels through the second liquid reversing channels. According to the heat exchanger, the distance between the heat exchange runners can be lengthened in a limited space, heat exchange is more sufficient, liquid flow resistance is reduced, cost is reduced, and system efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts, in particular to a heat exchanger. BACKGROUND

[0002] At present, the small heat exchanger (battery cooling) of automobile liquid medium is provided with heat exchange pipelines in the heat exchanger, the heat exchange pipelines are arranged in layers, the oil enters from the liquid inlet and flows to the liquid outlet along the length direction of the heat exchange pipeline, the flow length of the oil is the length of the heat exchanger, the arrangement of the heat exchange pipelines in layers can prolong the time of heat flow in the shell of the heat exchanger and increase the heat exchange efficiency of the cooling liquid, but since the heat exchange of the oil and water both adopt the structure in layers, the flow resistance of the liquid inlet and outlet of the oil and the water inlet and outlet of the cooling liquid is large, in addition, the mold investment is large in the production of the small heat exchanger, the cost of non-scale production is high, and the cost advantage is not good. SUMMARY

[0003] Therefore, the utility model discloses the purpose that a kind of heat exchanger can lengthen the distance of heat exchange flow channel in limited space, make heat exchange more fully, reduce liquid flow resistance, reduce cost, improve system efficiency.

[0004] The utility model provides a kind of heat exchanger, including shell, multiple rows of mouth organ pipe and multiple fins, each mouth organ pipe and each fin are respectively arranged in layers along the height direction of the shell, at least one fin is provided between each adjacent two rows of mouth organ pipe, the first passageway for the flow of refrigerant or oil is provided in the mouth organ pipe, the second passageway for the flow of cooling liquid is formed between the mouth organ pipe and the fin, first liquid reversing channel and second liquid reversing channel are provided in the shell, the refrigerant or the oil flows through each first passageway by the first liquid reversing channel, and the cooling liquid flows through each second passageway by the second liquid reversing channel.

[0005] In an embodiment, each first passageway forms first heat exchange zone, second heat exchange zone, third heat exchange zone and fourth heat exchange zone respectively, the first heat exchange zone and the fourth heat exchange zone are arranged side by side, the second heat exchange zone and the third heat exchange zone are arranged side by side, the first heat exchange zone and the second heat exchange zone are arranged in layers, the third heat exchange zone and the fourth heat exchange zone are arranged in layers, and the refrigerant or the oil sequentially passes through the first heat exchange zone, the second heat exchange zone, the third heat exchange zone and the fourth heat exchange zone.

[0006] In an embodiment, the housing comprises a first end plate and a second end plate arranged oppositely, the first liquid switching passage comprises a first switching channel, a second switching channel and a third switching channel, the first switching channel and the third switching channel are arranged on the second end plate, the first switching channel is arranged to make the coolant or the oil flow from the first heat exchange zone to the second heat exchange zone, the second switching channel is arranged on the first end plate, the second switching channel is arranged to make the coolant or the oil flow from the second heat exchange zone to the third heat exchange zone, and the third switching channel is arranged to make the coolant or the oil flow from the third heat exchange zone to the fourth heat exchange zone.

[0007] In an embodiment, the first end plate is provided with a first inlet and a first outlet for the coolant or the oil, the first inlet is communicated with the first channel in the first heat exchange zone, and the first outlet is communicated with the first channel in the fourth heat exchange zone.

[0008] In an embodiment, the first heat exchange zone, the second heat exchange zone, the third heat exchange zone and the fourth heat exchange zone are respectively provided with five rows of the mouthpiece tubes, and the five rows of the mouthpiece tubes are arranged in a stacked manner.

[0009] In an embodiment, each of the second channels forms a first cooling zone, a second cooling zone, a third cooling zone, a fourth cooling zone, a fifth cooling zone and a sixth cooling zone, the first cooling zone, the fourth cooling zone and the fifth cooling zone are arranged in parallel, the second cooling zone, the third cooling zone and the sixth cooling zone are arranged in parallel, the first cooling zone, the fourth cooling zone and the fifth cooling zone are arranged in a stacked manner with the second cooling zone, the third cooling zone and the sixth cooling zone, and the coolant flows through the first cooling zone, the second cooling zone, the third cooling zone, the fourth cooling zone, the fifth cooling zone and the sixth cooling zone in sequence.

[0010] In an embodiment, the housing comprises a first side plate and a second side plate arranged oppositely, the first side plate and the second side plate are respectively fixedly connected to the first end plate and the second end plate, the second liquid switching passage comprises a first switching pipe, a second switching pipe, a third switching pipe, a fourth switching pipe and a fifth switching pipe, the first switching pipe, the third switching pipe and the fifth switching pipe are arranged on the first side plate and are respectively arranged along the height direction of the first side plate, and the second switching pipe and the fourth switching pipe are arranged on the second side plate and are respectively arranged along the horizontal direction of the second side plate.

[0011] In an embodiment, the first reversing pipe makes the cooling liquid flow from the first cooling zone to the second cooling zone, the second reversing pipe makes the cooling liquid flow from the second cooling zone to the third cooling zone, the third reversing pipe makes the cooling liquid flow from the third cooling zone to the fourth cooling zone, the fourth reversing pipe makes the cooling liquid flow from the fourth cooling zone to the fifth cooling zone, and the fifth reversing pipe makes the cooling liquid flow from the fifth cooling zone to the sixth cooling zone.

[0012] In an embodiment, the second side plate is provided with a second inlet and a second outlet for the cooling liquid to enter and exit, the second inlet is communicated with the first cooling zone, and the second outlet is communicated with the sixth cooling zone.

[0013] In an embodiment, each of the mouth pipe and each of the fin are in an integrated structure.

[0014] The heat exchanger of the utility model is provided with multiple rows of mouth pipes and multiple fins, each of the mouth pipes and each of the fins are stacked and staggered, in addition, the heat exchanger is further provided with a first liquid reversing flow channel and a second liquid reversing flow channel, the refrigerant or the oil can flow through each of the mouth pipes in sequence through the first liquid reversing channel, and the cooling liquid can flow through each of the second channels in sequence through the second liquid reversing channel, the length of the refrigerant, the oil or the cooling liquid is increased, the longer heat exchange distance in the limited space is realized, and the heat exchange is more sufficient, in addition, the internal channel of the mouth pipe is small, the flow rate of the refrigerant or the oil can be increased, the Reynolds number is increased, the heat exchange efficiency and the system efficiency are increased, the flow resistance is reduced, and the power consumption is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiments, it should be understood, the following drawings only shows some embodiments of the utility model, therefore should not be regarded as the limitation to the range, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0016] Figure 1 It is the structure schematic diagram of the heat exchanger of the utility model.

[0017] Figure 2 It is Figure 1 the structure schematic diagram of the direction A in the embodiment.

[0018] Figure 3 It is the partial split structure schematic diagram of the heat exchanger of the utility model.

[0019] Figure 4 It is the structure schematic diagram of the mouth pipe and fin of the utility model in an integrated structure.

[0020] Figure 5It is a structure schematic view of a harmonica tube of the utility model.

[0021] Figure 6 It is a structure schematic view of a fin of the utility model.

[0022] Explanation of reference numerals: first channel-101;First heat exchange area-1011;Second heat exchange area-1012;Third heat exchange area-1013;Fourth heat exchange area-1014;First reversing channel-1031;Second reversing channel-1032;Third reversing channel-1033;First inlet-1041;First outlet-1042;Second inlet-1043;Second outlet-1044;Second channel-105;First cooling area-1051;Second cooling area-1052;Third cooling area-1053;Fourth cooling area-1054;Fifth cooling area-1055;Sixth cooling area-1056;First reversing pipe-1061;Second reversing pipe-`1062;Third reversing pipe-1063;Fourth reversing pipe-1064;Fifth reversing pipe-1065;Groove area-107;Shell-11;First end plate-111;Second end plate-112;First side plate-113;Second side plate-114;Harmonica tube-12;Fin-13;Rib-131.

[0023] The utility model discloses the realization, functional characteristics and advantages will be further explained with reference to the drawings in conjunction with the embodiment. DETAILED DESCRIPTION

[0024] The specific embodiments of the utility model will be described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the description of the utility model, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of the utility model protection.

[0025] In the description of the utility model, unless explicitly defined and limited, the terms "arrangement", "installation", "connection" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected;Can be mechanically connected, or electrically connected;Can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0026] The terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the utility model product is usually placed, and are only for the convenience of description and simplification of the description, and do not indicate or imply 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 a limitation on the utility model.

[0027] The terms "first", "second", "third" and the like merely distinguish similar attributes of elements, and do not indicate or imply relative importance or a particular order.

[0028] The terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, in addition to including the listed elements, other elements not explicitly listed can also be included.

[0029] As shown in Figures 1 to 6 The heat exchanger includes a shell 11, a plurality of rows of accordion tubes 12 and a plurality of fins 13, each accordion tube 12 and each fin 13 are stacked along the height direction of the shell 11, at least one fin 13 is arranged between each adjacent two rows of accordion tubes 12, the accordion tube 12 is provided with a first channel 101 for the flow of refrigerant or oil, the second channel 105 for the flow of coolant is formed between the accordion tube 12 and the fin 13, the first liquid reversing passage and the second liquid reversing passage are arranged in the shell 11, the refrigerant or oil flows through each first channel 101 through the first liquid reversing passage, and the coolant flows through each second channel 105 through the second liquid reversing passage; each accordion tube 12 and each fin 13 are integrated into a whole, and the accordion tube 12 and the fin 13 are integrated together in the form of brazing. In this embodiment, the accordion tube 12 is a plate structure, and a plurality of hollow first channels 101 are arranged therein, for example, five, six or seven, etc., the first channel 101 is in the form of a straight pipe, so as to facilitate the flow of refrigerant or oil in the first channel 101, in addition, the inner diameter of each first channel 101 is small, and under the action of the same pressure, the flow rate of the refrigerant or oil can be accelerated, and the heat exchange efficiency is improved; the fin 13 is in the shape of a rectangle as a whole, and the fin 13 includes a plurality of rib plates 131, the rib plate 131 is in the form of a slot with the opening upward, the bottom wall and the side wall of the rib plate 131 are smoothly transitioned, and the slot type area 107 of the rib plate 131 and the accordion tube 12 form a plurality of second channels 105 for the flow of coolant, and the coolant is preferably water or the like; in addition, the first channel 101 and the second channel 105 are arranged perpendicular to each other, so as to divide the heat exchange area of the refrigerant / oil and the coolant, avoid mixing of different liquids, and fully exchange heat between the second channel 105 composed of the accordion tube 12 and the fin 13 and the first channel 101 of the adjacent accordion tube 12.

[0030] Preferably, each first channel 101 forms a first heat exchange zone 1011, a second heat exchange zone 1012, a third heat exchange zone 1013 and a fourth heat exchange zone 1014, respectively, the first heat exchange zone 1011 and the fourth heat exchange zone 1014 are arranged side by side, the second heat exchange zone 1012 and the third heat exchange zone 1013 are arranged side by side, the first heat exchange zone 1011 and the second heat exchange zone 1012 are arranged in layers, the third heat exchange zone 1013 and the fourth heat exchange zone 1014 are arranged in layers, the refrigerant or the oil flows through the first heat exchange zone 1011, the second heat exchange zone 1012, the third heat exchange zone 1013 and the fourth heat exchange zone 1014 in turn, the first heat exchange zone 1011, the second heat exchange zone 1012, the third heat exchange zone 1013 and the fourth heat exchange zone 1014 are respectively provided with four rows or five rows of accordion pipes 12, the four rows or five rows of accordion pipes 12 are arranged in layers, and the number of accordion pipes 12 in each heat exchange zone can also be arranged according to requirements. It can be understood that the flow process of the refrigerant or the oil is the length of the four accordion pipes 12.

[0031] Preferably, the shell 11 includes a first end plate 111 and a second end plate 112 arranged opposite to each other, the first liquid reversing channel includes a first reversing passage 1031, a second reversing passage 1032 and a third reversing passage 1033, the first reversing passage 1031 and the third reversing passage 1033 are arranged on the second end plate 112, the first reversing passage 1031 allows the refrigerant or the oil to flow from the first heat exchange zone 1011 to the second heat exchange zone 1012, the second reversing passage 1032 is arranged on the first end plate 111, the second reversing passage 1032 allows the refrigerant or the oil to flow from the second heat exchange zone 1012 to the third heat exchange zone 1013, and the third reversing passage 1033 allows the refrigerant or the oil to flow from the third heat exchange zone 1013 to the fourth heat exchange zone 1014. The first end plate 111 is provided with a first inlet 1041 and a first outlet 1042 for the refrigerant or the oil to enter and exit, the first inlet 1041 is communicated with the first channel 101 in the first heat exchange zone 1011, and the first outlet 1042 is communicated with the first channel 101 in the fourth heat exchange zone 1014; specifically, the refrigerant or the oil enters the first heat exchange zone 1011 from the first inlet 1041 to flow, reaches the second end plate 112, is reversed by 180° through the first reversing passage 1031 to enter the second heat exchange zone 1012, flows in the second heat exchange zone 1012 along the length direction of the accordion pipe 12 to return to the first end plate 111, is reversed by 90° through the second reversing channel of the second end plate 112 to flow into the third heat exchange zone 1013, flows in the third heat exchange zone 1013 along the length direction of the accordion pipe 12 to the second end plate 112, is reversed by 180° through the third reversing channel of the second end plate 112 to flow into the fourth heat exchange zone 1014, flows in the fourth heat exchange zone 1014 to the first end plate 111, and finally flows out through the first outlet 1042.

[0032] Preferably, each second channel 105 forms a first cooling zone 1051, a second cooling zone 1052, a third cooling zone 1053, a fourth cooling zone 1054, a fifth cooling zone 1055 and a sixth cooling zone 1056, respectively, the first cooling zone 1051, the fourth cooling zone 1054 and the fifth cooling zone 1055 are arranged side by side, the second cooling zone 1052, the third cooling zone 1053 and the sixth cooling zone 1056 are arranged side by side, the first cooling zone 1051, the fourth cooling zone 1054 and the fifth cooling zone 1055 are arranged in layers with the second cooling zone 1052, the third cooling zone 1053 and the sixth cooling zone 1056, respectively, and the cooling liquid flows through the first cooling zone 1051, the second cooling zone 1052, the third cooling zone 1053, the fourth cooling zone 1054, the fifth cooling zone 1055 and the sixth cooling zone 1056 in turn. It can be understood that the length of the cooling liquid flowing through is six times the width of the heat exchanger, because the second channel 105 is arranged along the width direction of the heat exchanger, that is, the second channel 105 is perpendicular to the first channel 101.

[0033] Preferably, the shell 11 includes a first side plate 113 and a second side plate 114 arranged oppositely, the first side plate 113 and the second side plate 114 are fixedly connected to the first end plate 111 and the second end plate 112, respectively, the second liquid reversing channel includes a first reversing pipe 1061, a second reversing pipe 1062, a third reversing pipe 1063, a fourth reversing pipe 1064 and a fifth reversing pipe 1065, the first reversing pipe 1061, the third reversing pipe 1063 and the fifth reversing pipe 1065 are arranged on the first side plate 113 and arranged along the height direction of the first side plate 113, respectively, and the second reversing pipe 1062 and the fourth reversing pipe 1064 are arranged on the second side plate 114 and arranged along the horizontal direction of the second side plate 114, respectively. The second side plate 114 is provided with a second inlet 1043 and a second outlet 1044 for the cooling liquid to enter and exit, the second inlet 1043 communicates with the first cooling zone 1051, and the second outlet 1044 communicates with the sixth cooling zone 1056.

[0034] Preferably, the first reversing pipe 1061 makes the cooling liquid flow from the first cooling area 1051 to the second cooling area 1052, the second reversing pipe 1062 makes the cooling liquid flow from the second cooling area 1052 to the third cooling area 1053, the third reversing pipe 1063 makes the cooling liquid flow from the third cooling area 1053 to the fourth cooling area 1054, the fourth reversing pipe 1064 makes the cooling liquid flow from the fourth cooling area 1054 to the fifth cooling area 1055, and the fifth reversing pipe 1065 makes the cooling liquid flow from the fifth cooling area 1055 to the sixth cooling area 1056; specifically, the cooling liquid enters from the second inlet 1043, flows through the first cooling area 1051 to the first side plate 113, is reversed by 90° in the first reversing pipe 1061 of the first side plate 113, enters the second cooling area 1052, and flows to the second side plate 114 along the second cooling area 1052, is reversed by 180° in the second reversing pipe 1062 of the second side plate 114, and then flows to the third cooling area 1053, the cooling liquid flows through the third cooling area 1053 to the first side plate 113, is reversed by 90° in the third reversing pipe 1063 of the first side plate 113, and then flows to the fourth cooling area 1054, the cooling liquid flows through the fourth cooling area 1054 to the second side plate 114, is reversed by 180° in the fourth reversing pipe 1064 of the second side plate 114, and then flows to the fifth cooling area 1055, the cooling liquid flows through the fifth cooling area 1055 to the first side plate 113, is reversed by 90° in the fifth reversing pipe 1065 of the first side plate 113, and then flows to the sixth cooling area 1056, the cooling liquid flows through the sixth cooling area 1056 to the second side plate 114, and then flows out from the second outlet 1044 of the second side plate 114; thus, the cooling liquid in this embodiment has a long flow length, which can lengthen the heat exchange distance in a limited space and make the heat exchange more sufficient.

[0035] The flow resistance of the first inlet 1041, the flow resistance of the first outlet 1042, the flow resistance of the second inlet 1043, and the flow resistance of the second outlet 1044 in this embodiment are respectively 1 order of magnitude smaller than those of the existing heat exchanger plate fin 13 structure, the pressure loss in this embodiment is 10 kPa, and the pressure loss of the plate fin structure in the prior art is about 60 kPa, which greatly reduces the power consumption.

[0036] It can be understood that the first inlet 1041 or the second inlet 1043 of the first channel 101 of the coolant / oil or the second channel 105 of the cooling liquid is under pressure, and the flow of the coolant / oil or the cooling liquid is driven by pressure, including up and down and left and right flow, therefore, the reversing channels of the coolant / oil and the reversing pipes of the cooling liquid mainly play the role of flow guiding and connection.

[0037] The heat exchanger is provided with multiple rows of accordion tubes 12 and multiple fins 13, each accordion tube 12 and each fin 13 are arranged in a stacked and staggered manner, in addition, the heat exchanger is further provided with a first liquid reversing flow channel and a second liquid reversing flow channel, the refrigerant or the oil can flow through each accordion tube 12 in sequence through the first liquid reversing flow channel, the coolant can flow through each second channel 105 in sequence through the second liquid reversing flow channel, the length of the refrigerant, the oil or the coolant flowing through is increased, the refrigerant or the oil and the coolant have a longer heat exchange distance in the limited space, heat exchange is more sufficient; in addition, the internal channel of the accordion tube 12 is small, the flow rate of the refrigerant or the oil can be increased, the Reynolds number is improved, the heat exchange efficiency and the system efficiency are improved, the flow resistance is reduced, and the power consumption is greatly reduced.

[0038] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A heat exchanger, characterized by, The application relates to a shell (11), a plurality of rows of accordion tubes (12) and a plurality of fins (13), each of the accordion tubes (12) and each of the fins (13) is arranged in a stacked mode along the height direction of the shell (11), at least one fin (13) is arranged between each two adjacent rows of the accordion tubes (12), the accordion tube (12) is provided with a first channel (101) for the circulation of refrigerant or oil, a second channel (105) for the circulation of cooling liquid is formed between the accordion tube (12) and the fin (13), the shell (11) is provided with a first liquid reversing passage and a second liquid reversing passage, the refrigerant or the oil flows through each first channel (101) through the first liquid reversing passage, and the cooling liquid flows through each second channel (105) through the second liquid reversing passage.

2. The heat exchanger of claim 1, wherein Each first channel (101) forms a first heat exchange zone (1011), a second heat exchange zone (1012), a third heat exchange zone (1013) and a fourth heat exchange zone (1014), the first heat exchange zone (1011) and the fourth heat exchange zone (1014) are arranged in parallel, the second heat exchange zone (1012) and the third heat exchange zone (1013) are arranged in parallel, the first heat exchange zone (1011) and the second heat exchange zone (1012) are arranged in a stacked mode, the third heat exchange zone (1013) and the fourth heat exchange zone (1014) are arranged in a stacked mode, and the refrigerant or the oil sequentially passes through the first heat exchange zone (1011), the second heat exchange zone (1012), the third heat exchange zone (1013) and the fourth heat exchange zone (1014).

3. The heat exchanger of claim 2, wherein The shell (11) comprises a first end plate (111) and a second end plate (112) arranged oppositely, the first liquid reversing passage comprises a first reversing channel (1031), a second reversing channel (1032) and a third reversing channel (1033), the first reversing channel (1031) and the third reversing channel (1033) are arranged on the second end plate (112), the first reversing channel (1031) makes the refrigerant or the oil flow from the first heat exchange zone (1011) to the second heat exchange zone (1012), the second reversing channel (1032) is arranged on the first end plate (111), the second reversing channel (1032) makes the refrigerant or the oil flow from the second heat exchange zone (1012) to the third heat exchange zone (1013), and the third reversing channel (1033) makes the refrigerant or the oil flow from the third heat exchange zone (1013) to the fourth heat exchange zone (1014).

4. The heat exchanger of claim 3, wherein The first end plate (111) is provided with a first inlet (1041) and a first outlet (1042) for the refrigerant or the oil, the first inlet (1041) is communicated with the first channel (101) in the first heat exchange zone (1011), and the first outlet (1042) is communicated with the first channel (101) in the fourth heat exchange zone (1014).

5. The heat exchanger of claim 2, wherein The first heat exchange area (1011), the second heat exchange area (1012), the third heat exchange area (1013) and the fourth heat exchange area (1014) are respectively provided with five rows of the mouth pipe (12), and the five rows of the mouth pipe (12) are arranged in layers.

6. The heat exchanger of claim 1, wherein Each of the second channels (105) forms a first cooling area (1051), a second cooling area (1052), a third cooling area (1053), a fourth cooling area (1054), a fifth cooling area (1055) and a sixth cooling area (1056), the first cooling area (1051), the fourth cooling area (1054) and the fifth cooling area (1055) are arranged side by side, the second cooling area (1052), the third cooling area (1053) and the sixth cooling area (1056) are arranged side by side, the first cooling area (1051), the fourth cooling area (1054) and the fifth cooling area (1055) are arranged in layers with the second cooling area (1052), the third cooling area (1053) and the sixth cooling area (1056) respectively, and the cooling liquid flows through the first cooling area (1051), the second cooling area (1052), the third cooling area (1053), the fourth cooling area (1054), the fifth cooling area (1055) and the sixth cooling area (1056) in sequence.

7. The heat exchanger of claim 6, wherein The shell (11) includes a first side plate (113) and a second side plate (114) arranged oppositely, the first side plate (113) and the second side plate (114) are respectively fixedly connected to a first end plate (111) of the shell (11) and a second end plate (112) of the shell (11), the second liquid reversing channel includes a first reversing pipe (1061), a second reversing pipe (1062), a third reversing pipe (1063), a fourth reversing pipe (1064) and a fifth reversing pipe (1065), the first reversing pipe (1061), the third reversing pipe (1063) and the fifth reversing pipe (1065) are arranged on the first side plate (113) and are arranged along the height direction of the first side plate (113) respectively, and the second reversing pipe (1062) and the fourth reversing pipe (1064) are arranged on the second side plate (114) and are arranged along the horizontal direction of the second side plate (114) respectively.

8. The heat exchanger of claim 7, wherein The first reversing pipe (1061) makes the cooling liquid flow from the first cooling area (1051) to the second cooling area (1052), the second reversing pipe (1062) makes the cooling liquid flow from the second cooling area (1052) to the third cooling area (1053), the third reversing pipe (1063) makes the cooling liquid flow from the third cooling area (1053) to the fourth cooling area (1054), the fourth reversing pipe (1064) makes the cooling liquid flow from the fourth cooling area (1054) to the fifth cooling area (1055), and the fifth reversing pipe (1065) makes the cooling liquid flow from the fifth cooling area (1055) to the sixth cooling area (1056).

9. The heat exchanger of claim 8, wherein The second side plate (114) is provided with a second inlet (1043) and a second outlet (1044) for the cooling liquid, the second inlet (1043) is communicated with the first cooling area (1051), and the second outlet (1044) is communicated with the sixth cooling area (1056).

10. The heat exchanger of claim 1, wherein Each of the mouthpiece pipes (12) and each of the fins (13) are integrated structures.

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