Compact heat exchanger

Abstract

The present invention belongs to the technical field of heat transfer. Disclosed is a compact heat exchanger, comprising several cold-side heat exchange plates and several hot-side heat exchange plates, wherein each hot-side heat exchange plate and each cold-side heat exchange plate are alternately arranged in sequence from top to bottom; a wavy fin is provided on the upper surface of each hot-side heat exchange plate; and each wavy fin is connected to an adjacent hot-side heat exchange plate and an adjacent cold-side heat exchange plate, which are located on the upper and lower sides of the wavy fin, so as to form a hot-side heat exchange channel, and a cold-side heat exchange channel is formed between each cold-side heat exchange plate and an adjacent hot-side heat exchange plate thereabove. The heat exchanger has high heat exchange efficiency and is not easily clogged.

Description

Compact heat exchanger TECHNICAL FIELD

[0001] The present application belongs to the technical field of heat transfer, and relates to a compact heat exchanger. BACKGROUND

[0002] The compact heat exchanger can realize higher heat transfer efficiency due to its design characteristics and optimization of fluid flow paths, can reduce energy consumption and operating costs, occupies smaller space compared with traditional heat exchangers, and brings significant value and advantages in energy saving, environmental protection, space utilization and resource saving.

[0003] The traditional heat exchanger structure has the problems of easy blockage of flow channels and low heat exchange efficiency when facing large differences in types, flow rates and physical properties of cold and hot side working media.

[0004] SUMMARY

[0005] The present application aims to overcome the shortcomings of the prior art and provides a compact heat exchanger which has high heat exchange efficiency and is not easy to block.

[0006] To achieve the above-mentioned purpose, the present application discloses a compact heat exchanger, comprising a plurality of cold side heat exchange plates and a plurality of hot side heat exchange plates, wherein each hot side heat exchange plate and each cold side heat exchange plate are staggered from top to bottom, the upper surface of the hot side heat exchange plate is provided with a wave-shaped fin, wherein the wave-shaped fin is connected with the hot side heat exchange plate and the cold side heat exchange plate on its adjacent upper and lower sides to form a hot side heat exchange channel, and the cold side heat exchange plate and the hot side heat exchange plate on its adjacent upper side form a cold side heat exchange channel.

[0007] Further, the connection position of the wave-shaped fin with the hot side heat exchange plate is a flat structure, and the connection position of the wave-shaped fin with the cold side heat exchange plate is a flat structure.

[0008] The present application discloses a compact heat exchanger, comprising a plurality of cold side heat exchange plates and a plurality of hot side heat exchange plates, wherein each hot side heat exchange plate and each cold side heat exchange plate are staggered from top to bottom, the upper surface of the cold side heat exchange plate is provided with a plurality of airfoil fins, each airfoil fin and its adjacent cold side heat exchange plate and hot side heat exchange plate on the upper and lower sides enclose an irregular flow channel, wherein the irregular flow channel serves as a cold side heat exchange channel, and the hot side heat exchange plate and its adjacent cold side heat exchange plate on the upper side form a hot side heat exchange channel.

[0009] Further, the upper surface of the cold side heat exchange plate is uniformly distributed with a plurality of sharkskin groove structures.

[0010] Further, the chord length direction of each airfoil fin is parallel to the flow direction of the cold side working medium.

[0011] The groove direction of the sharkskin groove structure is parallel to the flow direction of the cold-side working medium.

[0012] Further, all the airfoil fins are divided into several groups, and the airfoil fins in each group are evenly arranged along the long edge direction of the cold-side heat exchange plate.

[0013] The airfoil fins in the adjacent two groups are arranged in a staggered manner.

[0014] The application discloses a compact heat exchanger, characterized in that the heat exchanger comprises a plurality of cold-side heat exchange plates and a plurality of hot-side heat exchange plates.

[0015] The upper surface of the cold-side heat exchange plate is provided with a plurality of airfoil fins, and the airfoil fins, the upper and lower adjacent cold-side heat exchange plates and the hot-side heat exchange plates surround an irregular flow channel.

[0016] The upper surface of the hot-side heat exchange plate is provided with a wave-shaped fin, and the wave-shaped fin is connected with the upper and lower hot-side heat exchange plates and the cold-side heat exchange plates to form a hot-side heat exchange channel.

[0017] Further, the upper surface of the cold-side heat exchange plate is uniformly provided with a plurality of sharkskin groove structures.

[0018] The chord length direction of each airfoil fin is parallel to the flow direction of the cold-side working medium.

[0019] The groove direction of the sharkskin groove structure is parallel to the flow direction of the cold-side working medium.

[0020] Further, all the airfoil fins are divided into several groups, and the airfoil fins in each group are evenly arranged along the long edge direction of the cold-side heat exchange plate.

[0021] Further, the connecting position of the wave-shaped fin and the hot-side heat exchange plate is a plane structure, and the connecting position of the wave-shaped fin and the cold-side heat exchange plate is a plane structure.

[0022] The application has the following beneficial effects:

[0023] The compact heat exchanger provided by the application is closely attached to the upper and lower heat exchange plates to form a heat side heat exchange channel in specific operation, the cross-sectional area of which is large, the flow channel structure is simple, and the probability of working medium blockage is reduced; the wing-shaped fin and the sharkskin groove structure arranged in the cold side heat exchange channel can effectively increase the contact area between the fluid and the wing-shaped fin, thereby increasing the surface area of heat exchange; the wing-shaped fin and the sharkskin groove structure can improve the flow direction and speed distribution of the fluid, which is beneficial to improve the heat exchange efficiency; the wing-shaped fin can generate local turbulence and vortex during the flow of the fluid, and the sharkskin groove structure can reduce the flow field boundary layer, thereby enhancing the heat transfer convection effect; the addition of the wing-shaped fin and the sharkskin groove structure can improve the heat exchange efficiency, so that the size and weight of the heat exchanger can be reduced under the condition of meeting certain heat exchange requirements, which is very beneficial to the application scene requiring lightweight and compact structure, and can be widely used for efficient heat exchange of working media with large differences in physical properties on both sides in a high-temperature and high-pressure environment. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments, and the following drawings are used to provide further understanding of the present application, and form a part of the present application, and do not constitute a limitation of the present application.

[0025] In the drawings:

[0026] Fig. 1 is a schematic view of the present application;

[0027] Fig. 2 is a schematic view of the present application;

[0028] Fig. 3 is a schematic view of the wing-shaped fin 5 and the sharkskin groove structure 7 in the present application;

[0029] Fig. 4 is a schematic view of the sharkskin groove structure 7 in the present application.

[0030] Among them, 1 is a heat side heat exchange plate, 2 is a cold side heat exchange plate, 3 is a wave-shaped fin, 4 is a heat side heat exchange channel, 5 is a wing-shaped fin, 6 is an irregular flow channel, 7 is a sharkskin groove structure, and 8 is a longitudinal groove. DETAILED DESCRIPTION

[0031] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments, and are not intended to limit the scope of the present application. In addition, in the following description, the description of the known structures and technologies is omitted to avoid unnecessary confusion of the concepts disclosed in the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0032] The structural schematic diagram according to the disclosed embodiments of the present application is shown in the drawings. These drawings are not drawn to scale, in which some details are enlarged for the purpose of clear expression, and some details can be omitted. The shapes of various regions, layers and their relative size and positional relationship shown in the drawings are only exemplary, and in actuality, there can be deviations due to manufacturing tolerances or technical limitations, and regions / layers with different shapes, sizes and relative positions can be additionally designed by those skilled in the art according to actual needs.

[0033] Embodiment one

[0034] The compact heat exchanger described in the present application comprises a plurality of cold-side heat exchange plates 2 and a plurality of hot-side heat exchange plates 1, wherein each hot-side heat exchange plate 1 and each cold-side heat exchange plate 2 are staggered from top to bottom, the upper surface of the hot-side heat exchange plate 1 is provided with a wave-shaped fin 3, wherein the wave-shaped fin 3 is connected with the hot-side heat exchange plate 1 and the cold-side heat exchange plate 2 on its adjacent upper and lower sides to form a hot-side heat exchange channel 4, and the cold-side heat exchange plate 2 and the hot-side heat exchange plate 1 on its adjacent upper side form a cold-side heat exchange channel.

[0035] As an embodiment of the present application, the connection position of the wave-shaped fin 3 with the hot-side heat exchange plate 1 is a planar structure, and the connection position of the wave-shaped fin 3 with the cold-side heat exchange plate 2 is a planar structure.

[0036] As an embodiment of the present application, the length direction of the wave-shaped fin 3 is parallel to the long side of the hot-side heat exchange plate 1, the upper end surface and the lower end surface of the wave-shaped fin 3 are both planar, and the amplitude and thickness of the wave-shaped fin 3 are related to the heat transfer efficiency of the hot-side working medium, the operating stability of the heat exchanger and the manufacturing cost.

[0037] It should be noted that in the present embodiment, the wave-shaped fin 3 is closely attached to the upper and lower heat exchange plates to form a hot-side channel, which has a large cross-sectional area and a simple flow channel structure, thereby reducing the probability of working medium blockage.

[0038] Embodiment two

[0039] The compact heat exchanger comprises a plurality of cold-side heat exchange plates 2 and a plurality of hot-side heat exchange plates 1, wherein each hot-side heat exchange plate 1 and each cold-side heat exchange plate 2 are staggered from top to bottom, the upper surface of each cold-side heat exchange plate 2 is provided with a plurality of airfoil fins 5, each airfoil fin 5 and the adjacent cold-side heat exchange plate 2 and hot-side heat exchange plate 1 form an irregular flow channel 6, wherein the irregular flow channel 6 is a cold-side heat exchange channel, and the hot-side heat exchange plate 1 and the adjacent cold-side heat exchange plate 2 form a hot-side heat exchange channel 4.

[0040] As an embodiment of the present application, the upper surface of each cold-side heat exchange plate 2 is uniformly provided with a plurality of sharkskin groove structures 7.

[0041] As an embodiment of the present application, the chord length direction of each airfoil fin 5 is parallel to the flow direction of the cold-side working medium, and the groove direction of the sharkskin groove structure 7 is parallel to the flow direction of the cold-side working medium.

[0042] As an embodiment of the present application, all the airfoil fins 5 are divided into a plurality of groups, and each group of airfoil fins 5 is uniformly arranged along the long edge direction of the cold-side heat exchange plate 2.

[0043] As an embodiment of the present application, each airfoil fin 5 in the adjacent two groups of airfoil fins 5 is staggered.

[0044] As an embodiment of the present application, the thickness l1 of the airfoil fin 5 is 1-2 times the thickness d2 of the cold-side heat exchange plate 2, and the spacing l2 between the adjacent airfoil fins 5 along the chord length direction is 1-2 times the chord length l3 of the airfoil fin 5.

[0045] As an embodiment of the present application, the spacing l4 between the adjacent two groups of airfoil fins 5 is 1-2 times the width l5 of the airfoil fin 5.

[0046] As an embodiment of the present application, the head of the sharkskin groove structure 7 is a semi-elliptical shape, the tail of the sharkskin groove structure 7 is a zigzag shape, the surface of the sharkskin groove structure 7 is provided with a plurality of longitudinal grooves 8, each longitudinal groove 8 is arranged along the length direction of the sharkskin groove structure 7, and the longitudinal groove 8 is a groove structure.

[0047] As an embodiment of the present application, the specific structure and arrangement of the sharkskin groove structure 7 are affected by the selection of the working medium and the working condition range, and the arrangement direction is usually the downstream direction, which helps to guide the flow of fluid and reduce the viscous resistance of fluid.

[0048] In this embodiment, the wing-shaped fins 5 and the sharkskin groove structure 7 arranged on the cold side channel can effectively increase the contact area between the fluid and the wing-shaped fins 5, thereby increasing the surface area of heat exchange; the wing-shaped fins 5 and the sharkskin groove structure 7 can improve the flow direction and speed distribution of the fluid, which is conducive to improving the heat exchange efficiency; the wing-shaped fins 5 can generate local turbulence and vortex during the flow of the fluid, and the sharkskin groove structure 7 can reduce the boundary layer of the flow field, thereby enhancing the heat transfer convection effect; the addition of the wing-shaped fins 5 and the sharkskin groove structure 7 can improve the heat exchange efficiency.

[0049] Embodiment three

[0050] Referring to FIGS. 1-4, the compact heat exchanger of the present application comprises a plurality of cold side heat exchange plates 2 and a plurality of hot side heat exchange plates 1, wherein each hot side heat exchange plate 1 and each cold side heat exchange plate 2 are staggered from top to bottom.

[0051] The upper surface of the hot side heat exchange plate 1 is provided with a wave-shaped fin 3, wherein the wave-shaped fin 3 is connected with the hot side heat exchange plate 1 and the cold side heat exchange plate 2 on its upper and lower sides to form a hot side heat exchange channel 4.

[0052] The upper surface of the cold side heat exchange plate 2 is provided with a plurality of wing-shaped fins 5, wherein each wing-shaped fin 5 and its adjacent cold side heat exchange plate 2 and hot side heat exchange plate 1 form an irregular flow channel 6, wherein the working medium flowing in the irregular flow channel 6 is a cold side working medium, and in addition, the chord length direction of each wing-shaped fin 5 is parallel to the flow direction of the cold side working medium.

[0053] As an embodiment of the present application, the connection position of the wave-shaped fin 3 with the hot side heat exchange plate 1 is a planar structure, and the connection position of the wave-shaped fin 3 with the cold side heat exchange plate 2 is a planar structure.

[0054] As an embodiment of the present application, the upper surface of the cold side heat exchange plate 2 is uniformly distributed with a plurality of sharkskin groove structures 7, and the groove direction of the sharkskin groove structure 7 is parallel to the flow direction of the cold side working medium.

[0055] As an embodiment of the present application, the hot side heat exchange plate 1 is a rectangular structure, and the thickness d1 of the hot side heat exchange plate 1 is related to the heat transfer efficiency of the hot side working medium, the running stability of the heat exchanger, and the manufacturing cost.

[0056] As an embodiment of the present application, the length direction of the wave-shaped fin 3 is parallel to the long side of the hot side heat exchange plate 1, the upper end surface and the lower end surface of the wave-shaped fin 3 are both planar, and the amplitude and thickness of the wave-shaped fin 3 are related to the heat transfer efficiency of the hot side working medium, the running stability of the heat exchanger, and the manufacturing cost.

[0057] As an embodiment of the present application, the cold-side heat exchange plate 2 is rectangular in structure, and the thickness d2 of the cold-side heat exchange plate 2 is related to the working medium and working condition.

[0058] As an embodiment of the present application, the thickness l1 of the airfoil fin 5 is 1-2 times the thickness d2 of the cold-side heat exchange plate 2, the spacing l2 between adjacent airfoil fins 5 along the chord length is 1-2 times the chord length l3 of the airfoil fin 5, the airfoil fins 5 are divided into groups, and the airfoil fins 5 in each group are arranged uniformly along the long side direction of the heat exchange plate.

[0059] As an embodiment of the present application, the airfoil fins 5 in the two adjacent groups are arranged alternately, and the airfoil fins 5 in the two groups of airfoil fins 5 separated by one group of airfoil fins 5 correspond to each other.

[0060] As an embodiment of the present application, the spacing l4 between the two adjacent groups of airfoil fins 5 is 1-2 times the width l5 of the airfoil fin 5.

[0061] As an embodiment of the present application, the head of the sharkskin groove structure 7 is semispheroidal, the tail of the sharkskin groove structure 7 is sawtooth-shaped, and the surface of the sharkskin groove structure 7 is provided with a plurality of longitudinal grooves 8 arranged along the length direction of the sharkskin groove structure 7, and the longitudinal grooves 8 are in a groove structure.

[0062] As an embodiment of the present application, the specific structure and arrangement of the sharkskin groove structure 7 are affected by the selection of working medium and working condition, and the arrangement direction is generally the flow direction, which is helpful to guide the flow of fluid and reduce the viscous resistance of fluid.

[0063] As an embodiment of the present application, in the gap between the alternately stacked hot-side heat exchange plate 1 and cold-side heat exchange plate 2, the wave-shaped fin 3 and the channel gap formed by the hot-side heat exchange plate 1 and the cold-side heat exchange plate 2 flow through hot fluid, and the airfoil fin 5, the sharkskin groove structure 7, the hot-side heat exchange plate 1 and the cold-side heat exchange plate 2 form a channel gap for flowing cold fluid.

[0064] In this embodiment, the wave-shaped fin 3 is closely attached to the upper and lower heat exchange plates to form a hot-side heat exchange channel 4, which has a large cross-sectional area and a simple flow channel structure, thereby reducing the probability of working medium blockage; the airfoil fin 5 and the sharkskin groove structure 7 arranged in the cold-side heat exchange channel can effectively increase the contact area between the fluid and the airfoil fin 5, thereby increasing the surface area of heat exchange; the airfoil fin 5 and the sharkskin groove structure 7 can improve the flow direction and speed distribution of the fluid, which is conducive to improving the heat exchange efficiency; the airfoil fin 5 can generate local turbulence and vortex during the flow of fluid, and the sharkskin groove structure 7 can reduce the boundary layer of the flow field, thereby enhancing the heat transfer convection effect; the addition of the airfoil fin 5 and the sharkskin groove structure 7 can improve the heat exchange efficiency.

[0065] Embodiment Four

[0066] Referring to FIG. 1 to FIG. 3, the compact heat exchanger of the present application comprises a plurality of cold-side heat exchange plates 2 and a plurality of hot-side heat exchange plates 1, wherein each hot-side heat exchange plate 1 and each cold-side heat exchange plate 2 are staggered from top to bottom; the upper surface of the hot-side heat exchange plate 1 is provided with a wave-shaped fin 3, wherein the wave-shaped fin 3 is connected with the hot-side heat exchange plate 1 and the cold-side heat exchange plate 2 on its upper and lower sides to form a hot-side heat exchange channel 4; the upper surface of the cold-side heat exchange plate 2 is provided with a plurality of airfoil-shaped fins 5, wherein each airfoil-shaped fin 5 and its adjacent cold-side heat exchange plate 2 and hot-side heat exchange plate 1 enclose an irregular flow channel 6, wherein the working medium flowing in the irregular flow channel 6 is a cold-side working medium, and in addition, the chord length direction of each airfoil-shaped fin 5 is parallel to the flow direction of the cold-side working medium.

[0067] As an embodiment of the present application, the connection position of the wave-shaped fin 3 with the hot-side heat exchange plate 1 is a planar structure, and the connection position of the wave-shaped fin 3 with the cold-side heat exchange plate 2 is a planar structure.

[0068] As an embodiment of the present application, the upper surface of the cold-side heat exchange plate 2 is uniformly provided with a plurality of sharkskin groove structures 7, and the groove direction of the sharkskin groove structure 7 is parallel to the flow direction of the cold-side working medium.

[0069] As an embodiment of the present application, the length direction of the wave-shaped fin 3 is parallel to the long side of the hot-side heat exchange plate 1, and the upper end surface and the lower end surface of the wave-shaped fin 3 are both planar.

[0070] As an embodiment of the present application, the cold-side heat exchange plate 2 is a rectangular structure.

[0071] As an embodiment of the present application, the airfoil-shaped fin 5 is divided into a plurality of groups, and each group of airfoil-shaped fins 5 is uniformly arranged along the long side direction of the heat exchange plate.

[0072] As an embodiment of the present application, each airfoil-shaped fin 5 in the two adjacent groups of airfoil-shaped fins 5 is arranged alternately, and the airfoil-shaped fins 5 in the two groups of airfoil-shaped fins 5 separated by one group of airfoil-shaped fins 5 correspond one-to-one.

[0073] As an embodiment of the present application, the head of the sharkskin groove structure 7 is semi-ellipsoidal, the tail of the sharkskin groove structure 7 is zigzag-shaped, the surface of the sharkskin groove structure 7 is provided with a plurality of longitudinal grooves 8, each longitudinal groove 8 is arranged along the length direction of the sharkskin groove structure 7, and the longitudinal groove 8 is a groove-shaped structure.

[0074] As an embodiment of the present application, the specific structure and arrangement of the sharkskin groove structure 7 are affected by the working medium selection and working condition range, and the arrangement direction is generally the flow direction, which helps to guide the fluid flow and reduce the viscous resistance of the fluid.

[0075] As an embodiment of the present application, in the gap between the staggered and stacked hot-side heat exchange plates 1 and cold-side heat exchange plates 2, the wave-shaped fins 3 and the hot-side heat exchange plates 1 and cold-side heat exchange plates 2 form a channel gap for the hot fluid to flow through, and the airfoil-shaped fins 5 and the sharkskin groove structure 7 and the hot-side heat exchange plates 1 and cold-side heat exchange plates 2 form a channel gap for the cold fluid to flow through.

[0076] Specifically, the thickness d1 of the hot-side heat exchange plate 1 is 2 mm, the amplitude of the wave-shaped fin 3 is 4 mm, the thickness of the wave-shaped fin 3 is 1 mm, the thickness d2 of the cold-side heat exchange plate 2 is 2 mm, the thickness l1 of the airfoil-shaped fin 5 is 3 mm, and the spacing l2 along the chord length direction is 2 times the chord length l3 of the airfoil-shaped fin 5.

[0077] In this embodiment, the wave-shaped fin 3 closely adheres to the upper and lower heat exchange plates to form a hot-side heat exchange channel 4, which has a large cross-sectional area and a simple flow channel structure, thereby reducing the probability of working medium blockage; the airfoil-shaped fin 5 and the sharkskin groove structure 7 arranged in the cold-side heat exchange channel can effectively increase the contact area between the fluid and the airfoil-shaped fin 5, thereby increasing the heat exchange surface area; the airfoil-shaped fin 5 and the sharkskin groove structure 7 can improve the flow direction and speed distribution of the fluid, which is beneficial to improve the heat exchange efficiency; the airfoil-shaped fin 5 can generate local turbulence and vortex during the fluid flow, and the sharkskin groove structure 7 can reduce the flow field boundary layer, thereby enhancing the heat transfer convection effect; the addition of the airfoil-shaped fin 5 and the sharkskin groove structure 7 can improve the heat exchange efficiency.

[0078] The present application can maximize the performance and reliability of the heat exchanger by optimizing the structure according to the differences in working medium characteristics and heat exchange demand characteristics, thereby bringing more economic and environmental benefits to industrial production and other fields.

[0079] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application and not to limit them, although the present application has been described in detail with reference to the above examples, those skilled in the art should understand that the specific embodiments of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and any modification or equivalent replacement thereof should be covered within the protection scope of the claims of the present application.

Claims

1. A compact heat exchanger, characterized by The application relates to a heat exchanger, which comprises a plurality of cold-side heat exchange plates (2) and a plurality of hot-side heat exchange plates (1), wherein the cold-side heat exchange plates (2) and the hot-side heat exchange plates (1) are alternately arranged from top to bottom, the upper surface of the hot-side heat exchange plate (1) is provided with a wave-shaped fin (3), the wave-shaped fin (3) is connected with the hot-side heat exchange plate (1) and the cold-side heat exchange plate (2) on the upper side and the lower side of the wave-shaped fin (3) to form a hot-side heat exchange channel (4), and the cold-side heat exchange plate (2) and the hot-side heat exchange plate (1) on the upper side of the cold-side heat exchange plate (2) form a cold-side heat exchange channel.

2. The compact heat exchanger of claim 1, wherein The connecting position of the wave-shaped fin (3) and the hot-side heat exchange plate (1) is in a plane structure, and the connecting position of the wave-shaped fin (3) and the cold-side heat exchange plate (2) is in a plane structure.

3. A compact heat exchanger, characterized by The application relates to a heat exchanger, which comprises a plurality of cold-side heat exchange plates (2) and a plurality of hot-side heat exchange plates (1), wherein the cold-side heat exchange plates (2) and the hot-side heat exchange plates (1) are alternately arranged from top to bottom, the upper surface of the cold-side heat exchange plate (2) is provided with a plurality of airfoil-shaped fins (5), each airfoil-shaped fin (5) and the cold-side heat exchange plate (2) and the hot-side heat exchange plate (1) on the upper side and the lower side of the airfoil-shaped fin (5) form an irregular flow channel (6), the irregular flow channel (6) is used as a cold-side heat exchange channel, the hot-side heat exchange plate (1) and the cold-side heat exchange plate (2) on the upper side of the hot-side heat exchange plate (1) form a hot-side heat exchange channel (4).

4. The compact heat exchanger of claim 3, wherein The upper surface of the cold-side heat exchange plate (2) is uniformly provided with a plurality of sharkskin groove structures (7).

5. The compact heat exchanger of claim 3, wherein The chord length direction of each airfoil-shaped fin (5) is parallel to the flow direction of a cold-side working medium. The groove direction of the sharkskin groove structure (7) is parallel to the flow direction of the cold-side working medium.

6. The compact heat exchanger of claim 3, wherein All the airfoil-shaped fins (5) are divided into a plurality of groups, and the airfoil-shaped fins (5) in each group are uniformly arranged along the long edge direction of the cold-side heat exchange plate (2).

7. The compact heat exchanger of claim 3, wherein The airfoil-shaped fins (5) in the two adjacent groups are alternately arranged.

8. A compact heat exchanger, characterized by The application relates to a heat exchanger, which comprises a plurality of cold-side heat exchange plates (2) and a plurality of hot-side heat exchange plates (1), wherein the cold-side heat exchange plates (2) and the hot-side heat exchange plates (1) are alternately arranged from top to bottom; The upper surface of the cold-side heat exchange plate (2) is provided with a plurality of airfoil-shaped fins (5), each airfoil-shaped fin (5) and the cold-side heat exchange plate (2) and the hot-side heat exchange plate (1) on the upper side and the lower side of the airfoil-shaped fin (5) form an irregular flow channel (6), the irregular flow channel (6) is used as a cold-side heat exchange channel; The upper surface of the hot-side heat exchange plate (1) is provided with a wave-shaped fin (3), the wave-shaped fin (3) is connected with the hot-side heat exchange plate (1) and the cold-side heat exchange plate (2) on the upper side and the lower side of the wave-shaped fin (3) to form a hot-side heat exchange channel (4).

9. The compact heat exchanger of claim 8, wherein, The upper surface of the cold-side heat exchange plate (2) is uniformly provided with a plurality of sharkskin groove structures (7). The chord length direction of each airfoil-shaped fin (5) is parallel to the flow direction of a cold-side working medium. The groove direction of the sharkskin groove structure (7) is parallel to the flow direction of the cold-side working medium. All the airfoil-shaped fins (5) are divided into a plurality of groups, and the airfoil-shaped fins (5) in each group are uniformly arranged along the long edge direction of the cold-side heat exchange plate (2).

10. The compact heat exchanger of claim 8, wherein, The wave-shaped fin (3) is flat at the position connected with the heat side heat exchange plate (1) and flat at the position connected with the cold side heat exchange plate (2).

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