Heat exchanger

Abstract

The utility model relates to a heat exchanger which comprises a shell and heat exchange core bodies, a plurality of heat exchange core bodies are arranged in an inner cavity of a shell body of the shell, and the heat exchange core bodies comprise an air inlet heat exchange core body and an air outlet heat exchange core body. The shell further comprises a hot side air inlet chamber, a steering air chamber and a hot side air outlet chamber, the hot side air inlet chamber and the hot side air outlet chamber communicate with the first air channel of the air inlet heat exchange core body and the first air channel of the air outlet heat exchange core body correspondingly, and the first air channels of the two different heat exchange core bodies communicate through the steering air chamber. The shell further comprises a cold side turning flow channel, a cold side air inlet and a cold side air outlet are formed in the shell body, and the cold side air inlet is communicated with one of the second air channel of the air inlet heat exchange core body and the second air channel of the air outlet heat exchange core body. The cold side air outlet is communicated with the second air channel of the air inlet heat exchange core body and the second air channel of the air outlet heat exchange core body, and the second air channels in the two different heat exchange core bodies are communicated through a cold side steering flow channel.

Description

TECHNICAL FIELD

[0001] The utility model relates to solid oxide fuel cell system technical field especially is related to a heat exchanger. BACKGROUND

[0002] Solid oxide fuel cell (SOFC for short) belongs to the third generation fuel cell, is a kind of directly chemical energy stored in fuel and oxidant under medium-high temperature High-efficient, environmental-friendly conversion into electric energy full solid-state chemical power generation device, is the highest theoretical energy density in several fuel cells.SOFC system generated exhaust gas temperature can be as high as (800 ℃~900 ℃), need to cool the exhaust gas, recover energy.But, currently commonly used heat exchanger is usually used for low-temperature gas-gas heat exchange or low-temperature water-gas heat exchange, if be applied in SOFC system, it is easy to fail due to excessive thermal stress, and a kind of heat exchanger capable of being applied to superhigh temperature (800 ℃~900 ℃) state is urgently needed. SUMMARY

[0003] The utility model discloses a heat exchanger to solve the above technical problems to some extent.

[0004] The utility model provides a kind of heat exchanger, comprising: shell and heat exchange core, the heat exchange core includes multiple first gas passageway and multiple second gas passageway;The shell includes shell body, multiple heat exchange core is equipped in the inner chamber of the shell body, multiple heat exchange core includes gas inlet heat exchange core and gas outlet heat exchange core;The shell further includes hot side gas inlet chamber, deflection gas chamber and hot side gas outlet chamber, which are connected with the shell body, the first gas passageway of gas inlet heat exchange core and the first gas passageway of gas outlet heat exchange core are communicated with the hot side gas inlet chamber and the hot side gas outlet chamber respectively, the first gas passageway of two different heat exchange core is communicated by the deflection gas chamber;The shell further includes cold side deflection flow channel connected with the shell body, cold side gas inlet and cold side gas outlet are equipped on the shell body, one of the second gas passageway of gas inlet heat exchange core and the second gas passageway of gas outlet heat exchange core is communicated with the cold side gas inlet, the other of the second gas passageway of gas inlet heat exchange core and the second gas passageway of gas outlet heat exchange core is communicated with the cold side gas outlet, the second gas passageway in two different heat exchange core is communicated by the cold side deflection flow channel.

[0005] Ultra-high temperature exhaust gas can enter the first gas channel in the intake heat exchange core inside the shell body through the hot-side intake chamber. After passing through the intake heat exchange core, it enters the turning chamber, then another heat exchange core, and finally enters the hot-side outlet chamber through the first gas channel in the outlet heat exchange core, exiting the heat exchanger. Simultaneously, relatively low-temperature cooling gas can enter the shell body through the cold-side intake port, enter the second gas channel in the corresponding heat exchange core, then enter the cold-side turning channel, and then enter the second gas channel in the next heat exchange core. Finally, it flows through the second gas channel in heat exchange core 1 corresponding to the cold-side outlet and exits the heat exchanger through the cold-side outlet. Ultra-high temperature exhaust gas circulates in the first gas channel, and cooling gas circulates in the second gas channel, resulting in heat exchange between the two gases. The heat exchanger provided in this embodiment can achieve multi-pass heat exchange of exhaust gas, which can avoid excessive heat exchanger size and ensure heat exchange efficiency, thereby meeting the heat exchange requirements of exhaust gas.

[0006] Furthermore, at least a plurality of heat exchange cores are provided along the length direction of the shell body, and the inlet heat exchange core and the outlet heat exchange core are respectively located at both ends of the shell body; the first air passage of two adjacent heat exchange cores is connected by the steering air...

[0007] The chambers are connected; the second air passages of the two adjacent heat exchange cores are connected through the cold side turning channel.

[0008] Furthermore, the number of heat exchange cores is at least three, the number of turning air chambers is at least two, and two adjacent turning air chambers are located on opposite sides of the shell; the number of cold-side turning channels is at least two, and two adjacent cold-side turning channels are located on opposite sides of the shell.

[0009] 0 Further, the housing includes a first side and a second side disposed opposite to each other, and a third side and a fourth side disposed opposite to each other; the hot side air inlet chamber is located on the first side of the housing, the hot side air outlet chamber is located on the first side or the second side, and the first side and the second side are both provided with the steering air chamber; the cold side air inlet is located on the third side or the fourth side, and the cold side air outlet is located on the third side or the fourth side.

[0010] 5. Further, in the height direction of the housing, the hot-side air inlet chamber is located at one end of the housing, and the cold-side air inlet is located at the other end of the housing.

[0011] Furthermore, the heat exchanger also includes a connecting plate; the heat exchange core includes a main plate and multiple heat exchange tubes, with both ends of the heat exchange tubes connected to the main plate; two adjacent heat exchange tubes...

[0012] In the heat exchange core, the previous main board is connected to one side of the connecting plate, and the next main board is connected to the other side of the connecting plate.

[0013] Furthermore, the connecting plate is provided with a thermal stress relief structure.

[0014] Furthermore, the cross-sectional shape of the connecting plate is "Z" shaped.

[0015] Furthermore, multiple heat exchange tubes are provided in both the width direction and the length direction of the motherboard.

[0016] Furthermore, a turbulence vane is provided between two adjacent heat exchange tubes; or, a turbulence vane is provided between two adjacent heat exchange tubes, the inner cavity of the heat exchange tube is provided with a turbulence vane, or the inner wall of the heat exchange tube is provided with a protruding structure.

[0017] Furthermore, the heat exchange tubes are flat tubes.

[0018] It should be understood that both the foregoing general description and the following detailed description are for illustrative purposes and do not necessarily limit the scope of this disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of this disclosure. Furthermore, the specification and drawings serve to explain the principles of this disclosure. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a first-view structural schematic diagram of the heat exchanger according to an embodiment of the present utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of the heat exchanger from a second perspective;

[0022] Figure 3 for Figure 1 A schematic diagram of the first cross-section of the heat exchanger shown;

[0023] Figure 4 for Figure 1 The diagram shows a second cross-section of the heat exchanger.

[0024] Figure 5 for Figure 1 The diagram shows the structure of the heat exchange core in the heat exchanger.

[0025] Icon: 1-heat exchange core; 2-shell body; 3-hot side air inlet chamber; 4-diversion air chamber; 5-hot side air outlet chamber; 6-cold side diversion flow channel; 7-cold side air inlet; 8-cold side air outlet; 9-connection plate; 10-baffle; 11-main plate; 12-heat exchange pipe; 13-air inlet heat exchange core; 14-air outlet heat exchange core. DETAILED DESCRIPTION

[0026] The technical solutions of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application.

[0027] The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0028] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0029] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. 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. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0031] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0032] It should be noted that "multiple" in the embodiments of this utility model refers to two, three, four, five, or six, etc.

[0033] like Figures 1 to 5 As shown, this utility model embodiment provides a heat exchanger, including: a shell and a heat exchange core 1. The heat exchange core 1 includes multiple first air channels and multiple second air channels. The shell includes a shell body 2, and multiple heat exchange cores 1 are disposed within the inner cavity of the shell body 2. Among the multiple heat exchange cores 1, there are an inlet heat exchange core 13 and an outlet heat exchange core 14. The shell also includes a hot-side inlet chamber 3, a turning chamber 4, and a hot-side outlet chamber 5, all connected to the shell body 2. The hot-side inlet chamber 3 and the hot-side outlet chamber 5 are respectively connected to the first air channels of the inlet heat exchange core 13 and the first air channels of the outlet heat exchange core 14. The first air passages of the two different heat exchange cores 1 are connected through the turning air chamber 4; the shell also includes a cold-side turning flow channel 6 connected to the shell body 2, and the shell body 2 is provided with a cold-side air inlet 7 and a cold-side air outlet 8; the cold-side air inlet 7 is connected to one of the second air passages of the inlet heat exchange core 13 and the outlet heat exchange core 14, and the cold-side air outlet 8 is connected to the other of the second air passages of the inlet heat exchange core 13 and the outlet heat exchange core 14, and the second air passages in the two different heat exchange cores 1 are connected through the cold-side turning flow channel 6.

[0034] In this embodiment, ultra-high temperature exhaust gas can enter the first air channel in the intake heat exchange core 13 inside the shell body 2 through the hot-side intake chamber 3, then enter the turning chamber 4 after passing through the intake heat exchange core 13, and then enter another heat exchange core 1 through the turning chamber 4. Finally, it enters the hot-side outlet chamber 5 through the first air channel in the outlet heat exchange core 14, and then exits the heat exchanger from the hot-side outlet chamber 5. At the same time, relatively low temperature cooling gas can enter the shell body 2 through the cold-side intake port 7, enter the second air channel in the corresponding heat exchange core 1, then enter the cold-side turning channel 6, and then enter the second air channel in the next heat exchange core 1 through the cold-side turning channel 6. Finally, it flows through the second air channel in the heat exchange core 1 corresponding to the cold-side outlet 8 and exits the heat exchanger through the cold-side outlet 8. Ultra-high temperature exhaust gas flows in the first air channel, and cooling gas flows in the second air channel, and heat exchange occurs between the ultra-high temperature exhaust gas and the cooling gas. The heat exchanger provided in this embodiment can achieve multi-pass heat exchange of exhaust gas, which can avoid excessive heat exchanger size and ensure heat exchange efficiency, thereby meeting the heat exchange requirements of exhaust gas.

[0035] The cold side diversion flow channel 6 can be provided in a pipe structure. Optionally, a baffle 10 is arranged in the shell body 2, and the heat exchange core 1 is spaced from the shell body 2, and the cold side diversion flow channel 6 is formed between the inner wall of the shell body 2, the side of the heat exchange core 1 and the baffle 10, which is simple in structure and easy to install.

[0036] The cold side gas inlet 7 is communicated with one of the second gas passages of the gas inlet heat exchange core 13 and the second gas passages of the gas outlet heat exchange core 14, and the cold side gas outlet 8 is communicated with the other one of the second gas passages of the gas inlet heat exchange core 13 and the second gas passages of the gas outlet heat exchange core 14, specifically, the cold side gas inlet 7 can be communicated with the second gas passage in the gas inlet heat exchange core 13, the cold side gas outlet 8 can be communicated with the second gas passage in the gas outlet heat exchange core 14, the cooling gas first enters the second gas passage in the gas inlet heat exchange core 13, and finally flows through the second gas passage of the gas outlet heat exchange core 14; alternatively, the cold side gas inlet 7 is communicated with the second gas passage in the gas outlet heat exchange core 14, and the cold side gas outlet 8 is communicated with the second gas passage in the gas inlet heat exchange core 13, the cooling gas first enters the second gas passage in the gas outlet heat exchange core 14, and finally flows through the second gas passage of the gas inlet heat exchange core 13, which can realize the cross flow of the cooling gas and the cooling gas, and can make the heat exchange more complete and the heat exchange efficiency higher.

[0037] The number of the heat exchange core 1 can be two, the number of the diversion gas chamber 4 and the number of the cold side diversion flow channel 6 are both one, that is, the waste gas and the cooling gas are diverted once and then flow out of the heat exchanger, and the flow of the waste gas and the flow of the cooling gas are both U-shaped. At this time, one heat exchange core 1 is the gas inlet heat exchange core 13, and the other heat exchange core 1 is the gas outlet heat exchange core 14, and the cooling gas directly enters the gas outlet heat exchange core 14 after flowing through the gas inlet heat exchange core 13.

[0038] As an optional solution, the number of the heat exchange core 1 is at least three, which increases the flow of the gas and guarantees better heat exchange effect.

[0039] At least three heat exchange cores 1 are arranged in the length direction of the shell body 2, two heat exchange cores 1 located in the middle of the plurality of heat exchange cores 1 are the gas inlet heat exchange core 13 and the gas outlet heat exchange core 14 (at this time, the number of the heat exchange core 1 is at least four); alternatively, the gas inlet heat exchange core 13 is one of the plurality of heat exchange cores 1 located at the outermost side, that is, the heat exchange core 1 located at one end of the shell body 2, and one heat exchange core 1 located in the middle of the plurality of heat exchange cores 1 is the gas outlet heat exchange core 14; alternatively, the gas outlet heat exchange core 14 is one of the plurality of heat exchange cores 1 located at the outermost side, that is, the heat exchange core 1 located at one end of the shell body 2, and one heat exchange core 1 located in the middle of the plurality of heat exchange cores 1 is the gas inlet heat exchange core 13.

[0040] At least three heat exchange cores 1 are arranged in the length direction of the shell body 2 (it can be understood that, in the two adjacent heat exchange cores 1, the two heat exchange cores 1 can be arranged in full opposition, can be arranged in full stagger, or a part of one heat exchange core 1 can be arranged face to face with a part of another heat exchange core 1; in addition, the two adjacent heat exchange cores 1 can be arranged in contact, or the two adjacent heat exchange cores 1 can be arranged in interval through arranging a separation structure, such as a support), which means that: a plurality of heat exchange cores 1 can be arranged in interval in the length direction of the shell body 2; a plurality of heat exchange cores 1 can be arranged in interval in the length direction of the shell body 2 and in the width direction of the shell body 2; a plurality of heat exchange cores 1 can be arranged in interval in the length direction of the shell body 2, in the width direction of the shell body 2 and in the thickness direction of the shell body 2; when a plurality of heat exchange cores 1 are arranged in interval in the width direction and / or the thickness direction of the shell body 2, the medium can pass through each heat exchange core 1 in a certain order in sequence through arranging the turning gas chamber 4 and the cold side turning flow channel 6, or the heat exchange core 1 in the width direction and / or the heat exchange core 1 in the thickness direction can be arranged in opposition, and the heat exchange cores 1 in the same layer are communicated with each other, that is, a plurality of inlet gas heat exchange cores 13 are communicated with each other, a plurality of outlet gas heat exchange cores 14 are communicated with each other, and a plurality of heat exchange cores 1 in the middle layer are communicated with each other, so that the turning gas chamber 4 and the cold side turning flow channel 6 can be arranged conveniently.

[0041] The turning gas chamber 4 can communicate the first gas passages of two different heat exchange cores 1 arranged in interval (that is, the two heat exchange cores 1 are further provided with heat exchange cores 1), and the cold side turning flow channel 6 can communicate the second gas passages of two different heat exchange cores 1 arranged in interval (that is, the two heat exchange cores 1 are further provided with heat exchange cores 1).

[0042] As an optional solution, the inlet gas heat exchange core 13 and the outlet gas heat exchange core 14 are respectively arranged at the two ends of the length direction of the shell body 2 (the heat exchange cores 1 at the two ends refer to the heat exchange cores 1 arranged at the first layer and the last layer in the plurality of heat exchange cores 1 arranged in stack), so that the high-temperature gas to be cooled and the cooling gas can flow from one end of the shell body 2 to the other end, and the overall flow direction of the medium is neat. The first gas passages of the two adjacent heat exchange cores 1 are communicated through the turning gas chamber 4, so that the turning gas chamber 4 is arranged regularly, the structure is regular and simple, and is not messy, so that the structure of the heat exchanger is simple and regular. The second gas passages of the two adjacent heat exchange cores 1 are communicated through the cold side turning flow channel 6, so that the cold side turning flow channel 6 is arranged regularly, the structure is regular and simple, and is not messy, so that the structure of the heat exchanger is simple and regular.

[0043] As an optional solution, as shown in FIG. 1, the heat exchange core 1 arranged in the width direction of the shell body 2 is arranged in opposition with the heat exchange core 1 arranged in the thickness direction of the shell body 2, and the heat exchange core 1 arranged in the width direction of the shell body 2 and the heat exchange core 1 arranged in the thickness direction of the shell body 2 are communicated with each other. Figure 3 and Figure 4As shown, the number of steering gas chambers 4 is at least two, and the adjacent two steering gas chambers 4 are located on opposite sides of the shell respectively; the number of cold side steering flow channels 6 is at least two, and the adjacent two cold side steering flow channels 6 are located on opposite sides of the shell respectively.

[0044] In this embodiment, the three heat exchange cores 1 arranged adjacently are respectively a first heat exchange core 1, a second heat exchange core 1 and a third heat exchange core 1, and the second heat exchange core 1 is located between the first heat exchange core 1 and the third heat exchange core 1; one steering gas chamber 4 is located on one side of the heat exchange core 1, and another steering gas chamber 4 is located on the other side of the heat exchange core 1; the exhaust gas in the first heat exchange core 1 enters the second steering core through the steering gas chamber 4, and then enters another steering gas chamber 4 from the second heat exchange core 1, and then enters the third heat exchange core 1 from the other steering gas chamber 4; similarly, one cold side steering flow channel 6 is located on one side of the heat exchange core 1, and another cold side steering flow channel 6 is located on the other side of the heat exchange core 1; the cooling gas in the first heat exchange core 1 enters the second steering core through the cold side steering flow channel 6, and then enters another cold side steering flow channel 6 from the second heat exchange core 1, and then enters the third heat exchange core 1 from the other cold side steering flow channel 6. Both the exhaust gas and the cooling gas can realize two U-shaped processes, so that the heat exchange efficiency is higher.

[0045] As shown in Figure 3 and Figure 4 , on the basis of the above embodiment, further, the shell comprises a first side and a second side arranged oppositely, and a third side and a fourth side arranged oppositely; the hot side gas inlet chamber 3 is located on the first side of the shell, the hot side gas outlet chamber 5 is located on the first side or the second side, and the first side and the second side are both provided with steering gas chambers 4; the cold side gas inlet 7 is located on the third side or the fourth side, and the cold side gas outlet 8 is located on the third side or the fourth side. As an optional solution, as shown in Figure 1 and Figure 2 , in the height direction of the shell, the hot side gas inlet chamber 3 is located at one end of the shell, and the cold side gas inlet 7 is located at the other end of the shell.

[0046] In this embodiment, the hot side gas inlet chamber 3 corresponds to the first end heat exchange core 1, and the cold side gas inlet 7 corresponds to the tail end heat exchange core 1; then, the hot side gas outlet chamber 5 corresponds to the tail end heat exchange core 1, and the cold side gas outlet 8 corresponds to the first end heat exchange core 1; in this way, the convection of the exhaust gas and the cooling gas can be realized, the cross-flow heat exchange can be realized, and the heat exchange efficiency can be further improved.

[0047] As shown in Figure 3 and Figure 4As shown, based on any of the above embodiments, the heat exchanger further includes a connecting plate 9; the heat exchange core 1 includes a main plate 11 and a plurality of heat exchange tubes 12, with both ends of the heat exchange tubes 12 connected to the main plate 11; in two adjacent heat exchange cores 1, the upper main plate 11 is connected to one side of the connecting plate 9, and the lower main plate 11 is connected to the other side of the connecting plate 9. Specifically, the main plate 11 is provided with a plurality of mounting holes, and the plurality of heat exchange tubes 12 pass through the plurality of mounting holes one by one, the heat exchange tubes 12 can form a first air channel, and the interval between the heat exchange tubes 12 forms a second air channel.

[0048] In this embodiment, the main board 11 of two adjacent heat exchange cores 1 is connected by the connecting plate 9, thereby connecting the two adjacent heat exchange cores 1 and forming a whole with the multiple heat exchange cores 1 shown, which facilitates the installation of the heat exchange cores 1.

[0049] like Figure 3 As shown, based on the above embodiment, the connecting plate 9 is further provided with a heat stress relief structure. In this embodiment, a heat release structure is provided on the connecting plate 9 to adapt to the thermal strain caused by the different temperatures of the different heat exchange cores 1.

[0050] The thermal stress relief structure can be a groove set on the heat exchange plate.

[0051] Optionally, the cross-section of the connecting plate 9 is Z-shaped, which is simple in structure and easy to process and manufacture.

[0052] like Figure 5 As shown, based on the above embodiment, a plurality of heat exchange tubes 12 are provided in both the width direction and the length direction of the motherboard 11, that is, the heat exchange core 1 includes multiple rows and columns of heat exchange tubes 12.

[0053] Based on the above embodiments, furthermore, turbulence plates are provided between two adjacent heat exchange tubes 12 to achieve turbulent flow of the medium and improve heat exchange efficiency.

[0054] Alternatively, turbulence vanes can be provided between two adjacent heat exchange tubes 12, or turbulence vanes can be provided in the inner cavity of the heat exchange tube 12, or a protruding structure can be provided on the inner wall of the heat exchange tube 12. This not only achieves turbulent flow of the medium outside the heat exchange tube 12, but also achieves turbulent flow of the medium inside the heat exchange tube 12, which can improve heat exchange efficiency and heat exchange effect.

[0055] The heat exchange tube 12 can be a round tube, a square tube, etc. Optionally, the heat exchange tube 12 can be a flat tube, which can reduce the temperature gradient and reduce thermal stress.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced equivalently. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application. In the specification provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not described in detail in order not to obscure the understanding of the present specification. In addition, those skilled in the art can understand that although some embodiments herein include some features included in other embodiments but not others, the combination of features of different embodiments means to be within the scope of the present application and forms different embodiments.

Claims

1. A heat exchanger, characterized in that, include: The shell and heat exchange core (1) include a plurality of first air channels and a plurality of second air channels; the shell includes a shell body (2), and a plurality of heat exchange cores (1) are provided in the inner cavity of the shell body (2), and the plurality of heat exchange cores (1) include an inlet heat exchange core (13) and an outlet heat exchange core (14); The housing also includes a hot-side air inlet chamber (3), a turning air chamber (4), and a hot-side air outlet chamber (5), all of which are connected to the housing body (2). The hot-side air inlet chamber (3) and the hot-side air outlet chamber (5) are respectively connected to the first air passage of the air inlet heat exchange core (13) and the first air passage of the air outlet heat exchange core (14). The first air passages of the two different heat exchange cores (1) are connected through the turning air chamber (4). The housing also includes a cold-side turning channel (6) connected to the housing body (2). The housing body (2) is provided with a cold-side air inlet (7) and a cold-side air outlet (8). The cold-side air inlet (7) is connected to one of the second air passage of the air inlet heat exchange core (13) and the second air passage of the air outlet heat exchange core (14). The cold-side air outlet (8) is connected to the other of the second air passage of the air inlet heat exchange core (13) and the second air passage of the air outlet heat exchange core (14). The second air passages of the two different heat exchange cores (1) are connected through the cold-side turning channel (6).

2. The heat exchanger according to claim 1, characterized in that, At least three heat exchange cores (1) are provided along the length of the shell body (2), and the inlet heat exchange core (13) and the outlet heat exchange core (14) are located at both ends of the shell body (2). The first air passages of two adjacent heat exchange cores (1) are connected through the turning air chamber (4); the second air passages of two adjacent heat exchange cores (1) are connected through the cold side turning flow channel (6).

3. The heat exchanger according to claim 2, characterized in that, The number of the steering chambers (4) is at least two, and two adjacent steering chambers (4) are located on opposite sides of the housing; the number of the cold-side steering channels (6) is at least two, and two adjacent cold-side steering channels (6) are located on opposite sides of the housing.

4. The heat exchanger according to claim 3, characterized in that, The housing includes a first side and a second side arranged opposite to each other, as well as a third side and a fourth side arranged opposite to each other; the hot side air inlet chamber (3) is located on the first side of the housing, the hot side air outlet chamber (5) is located on the first side or the second side, and the first side and the second side are both provided with the steering air chamber (4); the cold side air inlet (7) is located on the third side or the fourth side, and the cold side air outlet (8) is located on the third side or the fourth side.

5. The heat exchanger according to claim 4, characterized in that, In the height direction of the housing, the hot-side air inlet (3) is located at one end of the housing, and the cold-side air inlet (7) is located at the other end of the housing.

6. The heat exchanger according to any one of claims 1-5, characterized in that, The heat exchanger also includes a connecting plate (9); the heat exchange core (1) includes a main plate (11) and a plurality of heat exchange tubes (12), both ends of which are connected to the main plate (11); in two adjacent heat exchange cores (1), the previous main plate (11) is connected to one side of the connecting plate (9), and the next main plate (11) is connected to the other side of the connecting plate (9).

7. The heat exchanger according to claim 6, characterized in that, The connecting plate (9) is provided with a thermal stress relief structure.

8. The heat exchanger according to claim 7, characterized in that, The cross-sectional shape of the connecting plate (9) is "Z".

9. The heat exchanger according to claim 6, characterized in that, Multiple heat exchange tubes (12) are provided in both the width direction and the length direction of the main board (11).

10. The heat exchanger according to claim 6, characterized in that, A turbulence plate is provided between two adjacent heat exchange tubes (12); or, a turbulence plate is provided between two adjacent heat exchange tubes (12), the inner cavity of the heat exchange tube (12) is provided with a turbulence plate or the inner wall of the heat exchange tube (12) is provided with a protruding structure.

Images