Micro-channel plate heat exchange structure and heat exchanger

Abstract

This utility model discloses a microchannel plate heat exchanger structure and heat exchanger. The microchannel plate heat exchanger structure includes a first mounting plate, a second mounting plate, and multiple stacked basic cells disposed between the two. Each basic cell includes a first and a second heat exchange unit, and metal partitions are provided between the two and adjacent basic cells. The capillary array of the heat exchange unit is bilaterally symmetrical and shares a common working fluid inlet, which can uniformly distribute the working fluid, achieving the flow distribution and heat exchange effect of two parallel microchannel heat exchangers. Moreover, bilateral countercurrent heat exchange can be achieved between adjacent heat exchange units. The heat exchanger of this utility model realizes the integration of "tube box-core" and "flow distribution-heat exchange". Compared with the traditional parallel connection of two heat exchangers, it reduces volume and weight, achieves uniform flow distribution, and reduces some external branch pipes and valves, thereby reducing hardware costs, reducing leakage risk, and enhancing the pressure resistance and service life of the heat exchanger.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a microchannel plate heat exchanger structure and heat exchanger. Background Technology

[0002] Currently, when a process requires high-flow-rate fluid heat exchange and the flow handling capacity of a single heat exchanger is insufficient, a parallel inlet tube box scheme (distributing the fluid to multiple heat exchangers) is typically used. However, this scheme has significant disadvantages in practical applications: First, hardware costs increase significantly. In addition to the potential increase in the cost of the heat exchanger itself, multiple inlet tube boxes, branch pipes, and flow control valves are required (e.g., replacing one heat exchanger with two requires two inlet tube boxes, branch pipes, and valves). Second, space requirements increase dramatically. Parallel heat exchangers need to be arranged side by side, with additional structures such as pipes, supports, and maintenance access, which is problematic in situations with limited space. The layout of the scene creates difficulties; third, fluid distribution and heat exchange efficiency are prone to fluctuations. Due to the inconsistent length and diameter of branch pipes or the difference in resistance (local / friction resistance), the flow rate of each heat exchanger is uneven, which may cause "dry burning" or aggravated scaling problems, resulting in unstable overall heat exchange efficiency; fourth, the risk of leakage increases. The parallel structure increases the number of pipe box-pipe connection points and sealing surfaces (such as inlet and outlet flanges, branch interfaces, etc.), and traditional welding is prone to defects such as incomplete penetration and porosity, further increasing the probability of leakage; fifth, the heat dissipation of the pipes is aggravated. The branch pipes are longer and the heat dissipation area is larger, resulting in heat loss and energy waste. Utility Model Content

[0003] This utility model provides a microchannel plate heat exchange structure and heat exchanger to solve the technical problem of the limitations of parallel heat exchangers in the prior art.

[0004] In view of the above technical problems, this utility model provides a microchannel plate heat exchange structure.

[0005] It includes a first mounting plate, a second mounting plate, and a plurality of stacked basic cells disposed between the first mounting plate and the second mounting plate. Each basic cell includes a first heat exchange unit and a second heat exchange unit. Metal partitions are also disposed between the first heat exchange unit and the second heat exchange unit and between adjacent basic cells.

[0006] The working fluid flows in through the inlet pipe of the first mounting plate, achieves bilateral uniform flow splitting and counter-current heat exchange through the second heat exchange unit and the first heat exchange unit, and flows out through the outlet pipe of the second mounting plate.

[0007] Optionally, the first heat exchange unit includes a first flow channel baffle, a first capillary array and a second capillary array installed on opposite sides of the first flow channel baffle; the inlet and outlet of the first capillary array and the inlet and outlet of the second capillary array are mirror-symmetrical about the central axis of the first flow channel baffle.

[0008] Optionally, the second heat exchange unit includes a second flow channel baffle, a third capillary array and a fourth capillary array installed on opposite sides of the second flow channel baffle; the inlet and outlet of the third capillary array and the inlet and outlet of the fourth capillary array are mirror-symmetrical about the central axis of the second flow channel baffle.

[0009] Optionally, the third capillary array and the fourth capillary array constitute a symmetrical first flow channel layer, the first capillary array and the second capillary array constitute a symmetrical second flow channel layer, and the first flow channel layer and the second flow channel layer constitute an interlayer bilateral countercurrent heat exchange path.

[0010] Optionally, the inlet pipe includes a first inlet and a second inlet, and the inlets of the first capillary array and the second capillary array are connected to the first inlet;

[0011] The inlets of the third capillary array and the fourth capillary array are connected to the second inlet.

[0012] Optionally, the outlet connector includes a first outlet, a second outlet, a third outlet, and a fourth outlet; the outlets of the first capillary array and the second capillary array are respectively connected to the third outlet and the fourth outlet; the outlets of the third capillary array and the fourth capillary array are respectively connected to the first outlet and the second outlet.

[0013] Optionally, the first flow channel baffle, the metal partition, and the second flow channel baffle are connected by diffusion welding.

[0014] Optionally, the microchannel plate heat exchanger further includes a first protective plate and a second protective plate, wherein the first protective plate is connected to the end face of the first mounting plate facing the basic cell, and the second protective plate is connected to the end face of the second mounting plate facing the basic cell.

[0015] Optionally, the microchannel plate heat exchange structure further includes perforated grooves disposed on the first flow channel baffle, the second flow channel baffle, the metal partition, the first mounting plate, and the second mounting plate.

[0016] This utility model also provides a microchannel plate heat exchanger, including the microchannel plate heat exchange structure described above.

[0017] In this invention, the microchannel plate heat exchanger structure achieves efficient, compact, and reliable heat exchange through innovative design. Its core lies in integrating multiple units of a traditional parallel heat exchanger into a single unit, enabling highly efficient heat exchange. Specifically, the cold and hot working fluids enter through a shared inlet pipe between the first and second heat exchange units, flowing through symmetrical flow channel layers on both sides of the heat exchange unit to achieve uniform flow distribution. Through the alternating stacking of the first and second heat exchange units, bilateral counter-current heat exchange is achieved, ultimately resulting in uniform flow distribution and efficient heat transfer. This symmetrical design ensures that the flow paths on both sides are completely consistent, eliminating the need for flow control valves for flow splitting and effectively reducing hardware costs. Furthermore, this structure achieves bilateral sharing of the inlet pipe box and integrates flow splitting and heat exchange functions into one unit. Compared to the parallel structure of traditional dual microchannel heat exchangers, it not only reduces the size and weight of the equipment and eliminates some external branch pipes but also reduces the risk of leakage. Its plate structure adopts a diffusion welding integrated molding process, further enhancing the overall pressure-bearing capacity and extending the service life of the equipment. These advantages give it significant technological advantages and broad application prospects in various industrial application fields. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an exploded view of a microchannel plate heat exchange structure in one embodiment of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the first heat exchange unit and the second heat exchange unit of the microchannel plate heat exchange structure in one embodiment of this utility model;

[0021] Figure 3 This is an overall structural diagram of the microchannel plate heat exchanger structure in one embodiment of this utility model;

[0022] Figure 4 This is another structural schematic diagram of the microchannel plate heat exchange structure in one embodiment of this utility model.

[0023] The reference numerals in the accompanying drawings are as follows:

[0024] 1-First mounting plate, 2-Second mounting plate, 3-First heat exchange unit, 31-First flow channel baffle, 32-First capillary array, 33-Second capillary array, 4-Second heat exchange unit, 41-Second flow channel baffle, 42-Third capillary array, 43-Fourth capillary array, 5-Metal partition, 6-Inlet pipe, 61-First inlet, 62-Second inlet, 7-Outlet pipe, 71-First outlet, 72-Second outlet, 74-Fourth outlet, 8-First protection plate, 9-Second protection plate, 10-Perforated groove. Detailed Implementation

[0025] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] like Figures 1 to 4As shown, one embodiment of this utility model provides a microchannel plate heat exchange structure, including a first mounting plate 1, a second mounting plate 2, and multiple stacked basic cells disposed between the first mounting plate 1 and the second mounting plate 2. Each basic cell includes a first heat exchange unit 3 and a second heat exchange unit 4. Metal partitions 5 are also disposed between the first heat exchange unit 3 and the second heat exchange unit 4, and between adjacent basic cells. The working fluid flows in from the inlet pipe 6 of the first mounting plate 1, achieves bilateral uniform flow splitting and counter-current heat exchange through the second heat exchange unit 4 and the first heat exchange unit 3, and flows out from the outlet pipe 7 of the second mounting plate 2. Among them, multiple basic cells are stacked alternately between the first mounting plate 1 and the second mounting plate 2, forming multiple layers of cell layers in the vertical direction of the microchannel plate heat exchange structure. The basic cells are formed by connecting a single first heat exchange unit 3 and a single second heat exchange unit 4. The connection methods between them include, but are not limited to, diffusion welding. Multiple basic cells can also be connected by diffusion welding to form a core. Understandably, both the first heat exchange unit 3 and the second heat exchange unit 4 have their own symmetrically arranged double-sided flow channels, and the double-sided flow channels of adjacent heat exchange units form a counter-current heat exchange path.

[0029] In this invention, the microchannel plate heat exchanger structure achieves efficient, compact, and reliable heat exchange through innovative design. Its core lies in integrating multiple units of a traditional parallel heat exchanger into a single unit. The symmetrical and parallel design of the bilateral flow channels achieves uniform flow distribution, and the bilateral counter-current heat exchange between adjacent heat exchange units enables efficient heat transfer. This heat exchanger structure eliminates the need for flow control valves for diversion flow control, thereby reducing hardware costs. Furthermore, this structure enables bilateral sharing of the inlet tube box and integrates diversion and heat exchange functions into one unit. Compared to the parallel structure of traditional dual microchannel heat exchangers, it not only reduces the size and weight of the equipment and eliminates some external branch pipes but also reduces the risk of leakage. Its plate structure adopts a diffusion welding integrated molding process, further enhancing the overall pressure-bearing capacity and extending the service life of the equipment. These advantages make it demonstrate significant technical advantages and broad application prospects in various industrial application fields.

[0030] In one embodiment, such as Figures 1 to 2As shown, the first heat exchange unit 3 includes a first flow channel baffle 31, a first capillary array 32 and a second capillary array 33 installed on opposite sides of the first flow channel baffle 31; the inlet and outlet of the first capillary array 32 and the inlet and outlet of the second capillary array 33 are mirror-symmetrically arranged about the central axis of the first flow channel baffle 31. Understandably, the first capillary array 32 and the second capillary array 33 are respectively arranged on opposite sides of the first flow channel baffle 31, the thickness of the flow channel baffle is the same as the outer diameter of the capillary, and the capillary array can be embedded in the hollow groove of the flow channel baffle. The inlets of the first capillary array 32 and the second capillary array 33 share a common inlet tube box, such as... Figure 2 , Figure 4 As shown in the diagram, the outlets of the first capillary array 32 and the second capillary array 33 are mirror-symmetrically arranged about the central axis of the first flow channel baffle 31. This ensures that the flow rate from the inlet tube box to the first capillary array 32 and the second capillary array 33 is the same, resulting in a symmetrical flow pattern during heat exchange with identical flow paths in each channel. This guarantees uniform distribution of the working fluid within the channels, achieving uniform heat exchange on both sides. The heat exchanger, with its bilateral symmetry and shared working fluid inlet tube box, achieves an integrated "flow splitting-heat exchange" design, eliminating flow deviations caused by local resistance differences in parallel pipelines of traditional dual-microchannel heat exchangers, and avoiding local overheating or insufficient heat exchange. The mirror-symmetrical inlet and outlet arrangement helps achieve hydraulic balance, improving the reliability and service life of the heat exchanger.

[0031] In one embodiment, such as Figures 1 to 2 As shown, the second heat exchange unit 4 includes a second flow channel baffle 41, a third capillary array 42 and a fourth capillary array 43 installed on opposite sides of the second flow channel baffle 41; the inlet and outlet of the third capillary array 42 and the inlet and outlet of the fourth capillary array 43 are mirror-symmetrically arranged about the central axis of the second flow channel baffle 41. Understandably, the third capillary array 42 and the fourth capillary array 43 are respectively arranged on opposite sides of the second flow channel baffle 41, the thickness of the flow channel baffle is the same as the outer diameter of the capillary, and the capillary array can be embedded in the hollow groove of the flow channel baffle. The inlets of the third capillary array 42 and the fourth capillary array 43 (sharing a common inlet tube box, such as...) Figure 2 , Figure 4As shown in the diagram, the outlets of the third capillary array 42 and the fourth capillary array 43 are mirror-symmetrically arranged about the central axis of the second flow channel baffle 41. Thus, the flow rates diverted from the inlet tube box to the third capillary array 42 and the fourth capillary array 43 are the same, resulting in a symmetrical flow pattern during heat exchange. The effect of this structure is similar to that of the first flow channel baffle 31 described above, and will not be repeated here. Furthermore, the first flow channel baffle 31, the first capillary array 32, and the second capillary array 33 constitute the first heat exchange unit; the second flow channel baffle 41, the third capillary array 42, and the fourth capillary array 43 constitute the second heat exchange unit. During heat exchange, adjacent heat exchange units achieve bilateral counter-current heat exchange, further improving heat exchange efficiency.

[0032] In one embodiment, such as Figure 1 and Figure 3 As shown, the third capillary array 42 and the fourth capillary array 43 form a symmetrical first flow channel layer, and the first capillary array 32 and the second capillary array 33 form a symmetrical second flow channel layer. The first flow channel layer and the second flow channel layer form a bilateral counter-current heat exchange path. Understandably, this allows the cold and hot working fluids to form a bilateral counter-current heat exchange flow pattern within the flow channel, achieving higher heat exchange efficiency.

[0033] In one embodiment, such as Figure 1 , Figure 3 , Figure 4 As shown, the inlet pipe 6 includes a first inlet 61 and a second inlet 62. The inlets of the first capillary array 32 and the second capillary array 33 are connected to the tube box into which the first inlet 61 flows. The inlets of the third capillary array 42 and the fourth capillary array 43 are connected to the tube box into which the second inlet 62 flows. Understandably, the inlets of the first capillary array 32 and the second capillary array 33 share the same inlet tube box, and the inlets of the third capillary array 42 and the fourth capillary array 43 also share the same inlet tube box, forming a structure for bilateral heat exchange of both cold and hot working fluids while sharing the same working fluid inlet tube box. This significantly reduces the volume and weight of the heat exchange structure. The shared working fluid inlet tube box also reduces the amount of working fluid required, further optimizing the overall performance and economy of the heat exchange structure.

[0034] In one embodiment, such as Figure 1 , Figure 3 , Figure 4As shown, the outlet connector 7 includes a first outlet 71, a second outlet 72, a third outlet (not shown), and a fourth outlet 74; the outlets of the first capillary array 32 and the second capillary array 33 are respectively connected to the third outlet and the fourth outlet 74; the outlets of the third capillary array 42 and the fourth capillary array 43 are respectively connected to the first outlet 71 and the second outlet 72. Understandably, as Figure 2 As shown, the second flow channel layer, composed of the first capillary array 32 and the second capillary array 33, has one inlet and two outlets, which are arranged opposite to each other; that is, the first capillary array 32 and the second capillary array 33 share a working fluid inlet tube box. The first flow channel layer, composed of the third capillary array 42 and the fourth capillary array 43, also has one inlet and two outlets, which are arranged opposite to each other; that is, the third capillary array 42 and the fourth capillary array 43 share a working fluid inlet tube box. Thus, a two-inlet, four-outlet working fluid flow path layout is achieved on a single basic cell and even on the entire heat exchange structure, improving the flow efficiency of the working fluid. The symmetrically distributed outlet layout also ensures balanced pressure difference in each flow channel. Each capillary array outlet can independently discharge the heat-exchanged working fluid, avoiding mutual interference between working fluids in different flow channels and ensuring the independence and efficiency of the heat exchange process.

[0035] In one embodiment, such as Figure 1 As shown, the first flow channel baffle 31, the metal partition 5, and the second flow channel baffle 41 are connected by diffusion welding. The first mounting plate 1, the second mounting plate 2, the metal partition 5, the first heat exchange unit 3, and the second heat exchange unit 4 are stacked in an orderly manner and then welded by diffusion welding. Understandably, the heat exchanger core layer structure (including the first mounting plate 1, the second mounting plate 2, the first heat exchange unit 3, the second heat exchange unit 4, the metal partition 5, the first protective plate 8, and the second protective plate 9) is connected by diffusion welding. That is, the heat exchange core is integrally welded using diffusion welding. The heat exchange core is made of metal (such as 316L, 310SS, etc.), which enhances the stability and pressure resistance of the structure. The integral welding of the tube box and core, and the integration of flow distribution and heat exchange, reduce welding points and sealing surfaces, lowering the risk of working fluid leakage. The use of metal materials ensures the reliability and durability of the heat exchange structure under harsh conditions such as high temperature and high pressure.

[0036] In one embodiment, such as Figure 1As shown, the microchannel plate heat exchange structure further includes a first protective plate 8 and a second protective plate 9. The first protective plate 8 is connected to the end face of the first mounting plate 1 facing the basic cell, and the second protective plate 9 is connected to the end face of the second mounting plate 2 facing the basic cell. Understandably, the first protective plate 8 and the second protective plate 9 are disposed at both ends of the plurality of basic cells and are respectively connected to the first mounting plate 1 and the second mounting plate 2, providing additional physical protection for the heat exchange structure and further enhancing the overall stability of the heat exchange structure.

[0037] In one embodiment, such as Figures 2 to 4 As shown, the microchannel plate heat exchanger structure also includes perforated slots 10 disposed on the first flow channel baffle 31, the second flow channel baffle 41, the metal partition 5, the first mounting plate 1, and the second mounting plate 2. Understandably, the perforated slots 10 effectively improve the compactness of the heat exchanger and reduce its overall weight, which is particularly important for heat exchangers that require frequent movement or are installed in space-constrained environments. Furthermore, temperature measuring devices can be added at the location of the perforated slots 10 to achieve real-time monitoring of the heat exchange process, ensuring heat exchange efficiency and safety. In scenarios requiring rapid heating or cooling, heating or cooling devices can be easily added to the perforated slots 10, thereby enhancing the heat exchange effect. Simultaneously, the perforated slots 10 also facilitate the addition of auxiliary accessories such as hoisting devices, further improving the practicality and flexibility of the heat exchanger.

[0038] This utility model also provides a heat exchanger, including the microchannel plate heat exchange structure described above.

[0039] In one specific implementation, the heat exchanger operates as follows:

[0040] Fluid input stage: such as Figure 2 As shown, the working fluids (cold / hot media) enter the heat exchanger through the first inlet 61 and the second inlet 62 at the top, respectively. Specifically, the hot working fluid enters through the first inlet 61 and flows into the first heat exchange unit 3, while the cold working fluid enters through the second inlet 62 and flows into the second heat exchange unit 4. At this time, the inlets of all levels of the first heat exchange unit 3 are connected to the tube boxes corresponding to the first inlet 61 to allow the hot working fluid to flow in. The inlets of all levels of the second heat exchange unit 4 are connected to the tube boxes corresponding to the second inlet 62 to allow the cold working fluid to flow in. This ensures that both working fluids can smoothly enter the interior of the heat exchanger.

[0041] Uniform flow distribution stage: such as Figure 2 As shown, after the working fluid enters the heat exchanger core, it is distributed with the same flow rate to the two symmetrical flow channels on both sides to ensure the consistency of the flow rate in each flow channel. Specifically, the hot working fluid enters the second flow channel layer (composed of the first capillary array 32 and the second capillary array 33), and the cold working fluid enters the first flow channel layer (composed of the third capillary array 42 and the fourth capillary array 43).

[0042] Countercurrent heat exchange stage: such as Figure 2 As shown, the hot working fluid flows in the first capillary array 32 and the second capillary array 33 of the second flow channel layer, with symmetrical and Z-shaped flow paths in both. The cold working fluid flows in the third capillary array 42 and the fourth capillary array 43 of the first flow channel layer, with symmetrical and Z-shaped flow paths in both. At this point, for a single basic cell, the hot and cold fluids in the first and second flow channel layers achieve bilateral countercurrent heat exchange within the basic cell, and adjacent heat exchange units exchange heat efficiently through the capillary walls and metal partitions 5.

[0043] The working fluid stage after heat exchange: such as Figures 2 to 4 As shown, the heat exchanged medium flows out through two paths: the outlet of the first capillary array 32 (the third outlet) and the outlet of the second capillary array 33 (the fourth outlet 74). The heat exchanged cold medium is discharged through two paths: the outlet of the third capillary array 42 (the first outlet 71) and the outlet of the fourth capillary array 43 (the second outlet 72). Thus, the heat exchanger achieves a two-inlet, four-outlet working fluid flow path layout.

[0044] In another specific embodiment, the inlets for the hot and cold working fluids can be: the hot working fluid enters through the tube box corresponding to the second inlet 62 and flows into the second heat exchange unit 4. The cold working fluid enters the first heat exchange unit 4 through the tube box corresponding to the first inlet 61. In this case, the working process of the heat exchanger is similar to the principle of the previous embodiment, and will not be described again here.

[0045] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A microchannel plate heat exchange structure, characterized in that, It includes a first mounting plate (1), a second mounting plate (2) and a plurality of stacked basic cells disposed between the first mounting plate (1) and the second mounting plate (2). The basic cells include a first heat exchange unit (3) and a second heat exchange unit (4). Metal partitions (5) are also disposed between the first heat exchange unit (3) and the second heat exchange unit (4) and between adjacent basic cells. The working fluid flows in from the inlet pipe (6) of the first mounting plate (1), achieves bilateral uniform flow and counter-current heat exchange through the second heat exchange unit (4) and the first heat exchange unit (3), and flows out from the outlet pipe (7) of the second mounting plate (2).

2. The microchannel plate heat exchanger structure according to claim 1, characterized in that, The first heat exchange unit (3) includes a first flow channel baffle (31), a first capillary array (32) and a second capillary array (33) installed on opposite sides of the first flow channel baffle (31); the inlet and outlet of the first capillary array (32) and the inlet and outlet of the second capillary array (33) are mirror-symmetrical about the central axis of the first flow channel baffle (31).

3. The microchannel plate heat exchange structure according to claim 2, characterized in that, The second heat exchange unit (4) includes a second flow channel baffle (41), a third capillary array (42) and a fourth capillary array (43) installed on opposite sides of the second flow channel baffle (41); the inlet and outlet of the third capillary array (42) and the inlet and outlet of the fourth capillary array (43) are mirror-symmetrical about the central axis of the second flow channel baffle (41).

4. The microchannel plate heat exchanger structure according to claim 3, characterized in that, The third capillary array (42) and the fourth capillary array (43) form a symmetrical first flow channel layer, and the first capillary array (32) and the second capillary array (33) form a symmetrical second flow channel layer. The first flow channel layer and the second flow channel layer form an interlayer bilateral countercurrent heat exchange path.

5. The microchannel plate heat exchanger structure according to claim 4, characterized in that, The inlet pipe (6) includes a first inlet (61) and a second inlet (62), and the inlets of the first capillary array (32) and the second capillary array (33) are connected to the first inlet (61); The inlets of the third capillary array (42) and the fourth capillary array (43) are connected to the second inlet (62).

6. The microchannel plate heat exchanger structure according to claim 5, characterized in that, The outlet connector (7) includes a first outlet (71), a second outlet (72), a third outlet, and a fourth outlet (74); the outlets of the first capillary array (32) and the second capillary array (33) are respectively connected to the third outlet and the fourth outlet (74); the outlets of the third capillary array (42) and the fourth capillary array (43) are respectively connected to the first outlet (71) and the second outlet (72).

7. The microchannel plate heat exchanger structure according to claim 3, characterized in that, The first flow channel baffle (31), the metal partition (5) and the second flow channel baffle (41) are connected by diffusion welding.

8. The microchannel plate heat exchanger structure according to claim 5, characterized in that, It also includes a first protective plate (8) and a second protective plate (9), the first protective plate (8) being connected to the end face of the first mounting plate (1) facing the basic cell, and the second protective plate (9) being connected to the end face of the second mounting plate (2) facing the basic cell.

9. The microchannel plate heat exchanger structure according to claim 3, characterized in that, It also includes hollow grooves (10) provided on the first flow channel baffle (31), the second flow channel baffle (41), the metal partition (5), the first mounting plate (1) and the second mounting plate (2).

10. A microchannel plate heat exchanger, characterized in that, Includes the microchannel plate heat exchange structure as described in any one of claims 1-9.

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