Fluid flow path plate and heat exchanger including same

Abstract

A fluid flow path plate and a heat exchanger including the same, wherein the fluid flow path plate includes a passage plate and a spacer, the passage plate including a heat exchange area, an inlet and an outlet provided on both sides of the heat exchange area in the OY direction, and an atomic diffusion bonded portion provided to surround the heat exchange area, the inlet, and the outlet. The spacer includes a frame for bonding to the atomic diffusion bonded portion, a hollow area formed by being surrounded by the frame, and at least one support structure extending from the frame into the hollow area. When the passage plate and the spacer are stacked, the support structure spans the inlet and the outlet, and a free end of the support structure overlaps the heat exchange area.

Description

[Technical Field]

[0001] The present invention relates to the field of heat exchange technology, and more particularly to a fluid flow path plate and a heat exchanger including the same. [Background technology]

[0002] In conventional heat exchanger manufacturing methods, two types of fluid flow passage plates are alternately stacked between upper and lower pressure plates to form a heat exchanger. However, due to limitations in the stacking and bonding processes, the shapes of the two pressure plates are limited, limiting the range of applications.

[0003] Therefore, it is necessary to provide a new fluid flow path plate and a heat exchanger including the same to solve the above technical problems. Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a fluid flow path plate and a heat exchanger including the same. [Means for solving the problem]

[0005] In order to solve one of the above technical problems, the present invention employs the following technical means.

[0006] The fluid flow path plate includes a passage plate and a spacer, wherein the passage plate includes a heat exchange area, an inlet and an outlet provided on both sides of the heat exchange area in the OY direction, and atomic diffusion bonding portions provided to surround the heat exchange area, the inlet, and the outlet, and the spacer includes a frame for bonding to the atomic diffusion bonding portions, a hollow area formed by being surrounded by the frame, and at least one support structure extending from the frame into the hollow area, and when the passage plate and the spacer are stacked, the support structure straddles the inlet and the outlet, and a free end of the support structure overlaps the heat exchange area.

[0007] By providing a support structure in the present invention, an effective connecting support point is formed between the edge of the heat exchange area and the adjacent passage plate, and it functions as a support pillar between two layers of fluid flow path plates and also serves to divide the inlet or outlet into two areas, thereby improving the connecting strength and pressure resistance performance of the entire heat exchanger.

[0008] A heat exchanger comprising: a bottom plate; a cover plate; and a plurality of fluid flow path plates arranged between the bottom plate and the cover plate, the fluid flow path plates including refrigerant flow path plates and water flow path plates arranged alternately, and the water flow path plates are any of the fluid flow path plates described above.

[0009] A heat exchanger comprising at least two heat exchange cores and a housing, wherein the heat exchange cores comprise a plurality of first working fluid flow path plates and a plurality of second working fluid flow path plates, the first working fluid flow path plates and the second working fluid flow path plates forming a plurality of first working fluid flow paths and second working fluid flow paths arranged alternately and spaced apart, the first working fluid flow path plate being any of the fluid flow path plates described above, and the housing comprises an internal space for accommodating the at least two heat exchange cores, a pair of first fluid ports communicating with the first working fluid flow paths of the at least two heat exchange cores, and a pair of second fluid ports communicating with the second working fluid flow paths of each heat exchange core, and the first working fluid flow paths of the at least two heat exchange cores are connected to each other.

[0010] A method of manufacturing a heat exchanger includes forming a heat exchange core and bonding the heat exchange core to a housing. Formation of heat exchange core: A plurality of first fluid flow path plates and a plurality of second fluid flow path plates are alternately stacked between a bottom plate and a cover plate and formed by atomic diffusion bonding. The heat exchange core has a plurality of first working fluid flow paths and a plurality of second working fluid flow paths formed by the first fluid flow path plates and the second fluid flow path plates spaced apart. The housing includes a pair of first fluid ports communicating with the first working fluid flow paths and a pair of second fluid ports communicating with the second working fluid flow paths, and is used to connect to another heat exchange system.

[0011] This invention breaks away from conventional design concepts by designing and processing the heat exchange section and the upper and lower pressure-resistant sections separately, and by arranging two types of fluid flow path plates alternately to form the heat exchange core. The upper and lower pressure-resistant sections can be designed as housings with various external shapes based on the actual requirements of the heat exchange core's application, greatly reducing the difficulty of the process and expanding the range of applications. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a diagram showing the structure of a heat exchanger according to one embodiment of the present invention. [Figure 2] FIG. 2 is a diagram showing the structure of the first fluid flow path plate of the present invention. [Figure 3] FIG. 3 is a diagram showing the structure of the first passage plate in FIG. [Figure 4] FIG. 4 is a diagram showing the structure of the first spacer in FIG. [Figure 5] FIG. 5 is a diagram showing the structure of the second fluid flow path plate of the present invention. [Figure 6] FIG. 6 is a diagram showing the structure of the second passage plate in FIG. [Figure 7] FIG. 7 is a diagram showing the structure of the second spacer in FIG. [Figure 8] FIG. 8 is a diagram showing how a heat exchange core is formed by stacking a cover plate, a second spacer, a second passage plate, a first spacer, and a first passage plate. [Figure 9] FIG. 9 shows the structure of FIG. 8 after lamination with the cover plate removed, and is shown in perspective to show the state of the first and second microstructures after lamination. [Figure 10] FIG. 10 is a partially enlarged view of FIG. [Figure 11] FIG. 11 is a diagram showing the structure of the heat exchanger assembly of the present invention. [Figure 12] FIG. 12 shows the structure of FIG. 11 with the upper plate removed. [Figure 13] FIG. 13 is a plan view of FIG. [Figure 14] FIG. 14 is a view in which the upper plate and side wall plates are removed from FIG. [Figure 15] FIG. 15 is a diagram showing the structure of another heat exchanger assembly of the present invention. [Figure 16] FIG. 16 shows the structure of FIG. 15 with the side wall plates removed. [Figure 17] FIG. 17 is a plan view of FIG. 15 with the upper plate removed. [Figure 18] FIG. 18 shows the structure of another heat exchanger assembly of the present invention. [Figure 19] FIG. 19 shows the structure of FIG. 18 with the upper plate removed. [Figure 20] FIG. 20 is a plan view of FIG. 18 with the upper plate removed. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings, but these embodiments do not limit the present invention, and any structural, method or functional modifications made by those skilled in the art based on these embodiments will fall within the scope of protection of the present invention.

[0014] In each of the figures of the present invention, for ease of explanation, the dimensions of some of the structures and parts may be exaggerated relative to other structures and parts, and are therefore only used to illustrate the basic structure of the subject matter of the present invention.

[0015] Referring to Figures 1 to 10, the present invention aims to improve a heat exchanger 100 formed by alternately stacking two types of fluid flow path plates 1 and a manufacturing method thereof, thereby obtaining a heat exchanger 100 that has a reduced defect rate, is suitable for mass production, has a compact structure, and has good heat exchange performance.

[0016] For ease of explanation, a coordinate system O-XYZ is set, and the fluid flow path plate 1 extends approximately in the O-XY direction, and multiple fluid flow path plates 1 are stacked in the OZ direction to form the heat exchanger 100. A working fluid flow path through which a working fluid flows is formed between two adjacent fluid flow path plates 1.

[0017] The inventor has broken away from conventional design concepts and designed and processed the heat exchange portion and the upper and lower pressure-resistant portions separately, and designed the heat exchange portion, i.e., the heat exchange core 8 of the heat exchanger 100, and the upper and lower pressure-resistant portions as housings 9 of various shapes based on actual requirements depending on the use of the heat exchange core 8.

[0018] A method of manufacturing a heat exchanger includes forming a heat exchange core and bonding the heat exchange core to a housing.

[0019] Formation of the heat exchange core 8: A plurality of first fluid flow path plates 12 and a plurality of second fluid flow path plates 11 are alternately stacked between a bottom plate and a cover plate, and atomic diffusion bonding is used to form the heat exchange core 8. The heat exchange core 8 has a plurality of first working fluid flow paths and a plurality of second working fluid flow paths formed by the first fluid flow path plates 12 and the second fluid flow path plates 11 at intervals.

[0020] Formation of the first fluid flow path plate 12: A first passage plate 121 and a first spacer 122 are formed, and the two are laminated in the thickness direction (i.e., OZ direction) of the fluid flow path plate 1, and the first fluid flow path plate 12 is formed by atomic diffusion bonding.

[0021] Formation of the first passage plate 121: A first inlet 1212 and a first outlet 1213 are formed in the first atomic diffusion bonded portion 1214 of the first substrate plate by pressing, and a plurality of microstructures 3 are formed in the region between the first inlet 1212 and the first outlet 1213 by pressing to form the first heat exchange region 1211. The first inlet 1212 and the first outlet 1213 are located on both sides of the first heat exchange region 1211 in the OY direction, and the first atomic diffusion bonded portion 1214, which is not pressed, forms the frame of the first passage plate 121.

[0022] Specifically, the formed first passage plate 121 includes a first heat exchange area 1211, a first inlet 1212 and a first outlet 1213 respectively provided on both sides of the first heat exchange area 1211 in the OY direction, and a first atomic diffusion bonding portion 1214 provided to surround the first heat exchange area 1211, the first inlet 1212, and the first outlet 1213.

[0023] The first heat exchange region 1211 is the core region of heat exchange, and the microstructures 3 divide the water-heat exchange region 1211 into a group of microchannels that run vertically and horizontally, which is advantageous for improving heat exchange performance. The microstructures 3 preferably have a shape that reduces the flow resistance of the working fluid, such as a circular, diamond, spindle, or elliptical elongated shape, which can reduce fluid flow loss and pressure loss.

[0024] In this embodiment, the microstructures 3 are arranged at intervals along a plurality of sinusoidal curves, the sinusoidal curves extending in the OX direction and the sinusoidal curves arranged at intervals in the OY direction. When the working fluid enters the first heat exchange area 1211 through the first inlet 1212, it is disturbed by the microstructures 3 arranged in a sinusoidal curve, forming a guiding effect of the sinusoidal guiding structure. Like waves on the beach, the rear waves push the front waves forward, and the fluid moves to the first outlet 1213. This increases the disturbance of the fluid and improves the heat exchange performance.

[0025] Preferably, the microstructures 3 on each sinusoidal curve are equally spaced in the OX direction, and the microstructures 3 on two adjacent sinusoidal curves are offset in the OX direction, so that when adjacent fluid flow path plates 1 are stacked on top of each other, the support / bonding points are uniform.

[0026] Furthermore, in order to improve the heat exchange performance, a turbulent region is provided in the first heat exchange region 1211, and the turbulent region is located in the center of the first heat exchange region 1211 in the OY direction. The installation density of the microstructures 3 in the turbulent region is higher than that in other regions, specifically, the number of sinusoidal microstructures 3 in the turbulent region is greater than the number of sinusoidal microstructures 3 in other regions, and / or the distance between two adjacent sinusoidal curves in the turbulent region is smaller than the distance between two adjacent sinusoidal curves in other regions.

[0027] In this embodiment, the width of the turbulent flow region is designed to accommodate three or less of the above-mentioned sinusoidal curves, preferably two to three, which can improve the heat exchange performance of the first heat exchange region 1211 of the same area by at least 30%, without causing excessive pressure loss and flow loss.

[0028] The first inlet 1212 and the first outlet 1213 are located on both sides of the first heat exchange area 1211 in the OY direction, and are adjacent to each other on both sides in the OX direction. In this embodiment, the width of the first inlet 1212 and the first outlet 1213 in the OX direction is greater than half, preferably two-thirds, the width of the first heat exchange area 1211. The first inlet 1212 passes through the first heat exchange area 1211 in a substantially straight line and intersects with the second outlet 1213. This increases the area of ​​the inlet and outlet, and reduces the pressure.

[0029] Forming a first spacer 122: removing portions of the second base plate corresponding to the first heat exchange area 1211, the first inlet 1212, and the first outlet 1213 to form a first hollow area 1222. A first frame 1221 remains around the first hollow area 1222, and at least one support structure 1223 is provided extending from the first frame 1221 into the first hollow area 1222.

[0030] Here, the support structure 1223 spans the area corresponding to the first inlet 1212 and the first outlet 1213 and extends to the area corresponding to the first heat exchange area 1211, so that when the first passage plate 121 and the first spacer 122 are stacked, the support structure 1223 spans the first inlet 1212 and the first outlet 1213, and the end of the support structure 1223 away from the first frame 1221 overlaps the first heat exchange area 1211.

[0031] The formed first spacer 122 is generally frame-shaped and includes a first frame 1221 for bonding with the first atomic diffusion bond 1214, a first hollow area 1222 surrounded by the first frame 1221, and at least one support structure 1223 extending from the first frame 1221 into the first hollow area 1222, and the first hollow area 1222 corresponds to the first heat exchange area 1211, the first inlet 1212, and the first outlet 1213.

[0032] When the first passage plate 121 and the first spacer 122 are stacked, the first frame 1221 is aligned with the first atomic diffusion bond 1214, the first heat exchange area 1211, the first inlet 1212 and the first outlet 1213 are exposed to the outside through the first hollow area 1222, the support structure 1223 spans the first inlet 1212 and the first outlet 1213, and the end of the support structure 1223 away from the frame 221 overlaps the edge of the first heat exchange area 1211.

[0033] The support structure 1223 includes a bridge portion 1223a connected to the first frame 1221 and an overlapping portion 1223b located on the side of the bridge portion 1223a away from the first frame 1221, and the overlapping portion 1223b is located in a region corresponding to the first heat exchange region 1211 in the first hollow region 1222. The bridge portion 1223a straddles the first inlet 1212 or the first outlet 1213, and the overlapping portion 1223b overlaps the edge of the first heat exchange region 1211, and is connected to the first heat exchange region 1211 and the adjacent passage plate during atomic diffusion bonding to perform a supporting function.

[0034] In a specific embodiment, the support structure 1223 extends in the OY direction, and therefore, an end of the bridge portion 1223a remote from the overlapping portion 1223b is connected to the first frame 1221 at a position corresponding to the opposite side of the first inlet 1212 and the first outlet 1213 from the first heat exchange area 1211. Since this portion of the first frame 1221 needs to be cut out after atomic diffusion bonding, it is easy to remove the bridge portion 1223a together. As can be understood by those skilled in the art, extending in the OY direction refers to extending generally in the OY direction, and may be linear or wavy.

[0035] Furthermore, the length of the support structure 1223 is greater than the lengths of the first inlet 1212 and the first outlet 1213 in the OY direction, and the length of the bridge portion 1223a is less than or equal to the lengths of the first inlet 1212 and the first outlet 1213 in the OY direction. Therefore, the junctions of the bridge portion 1223a and the overlapping portion 1223b are located at the first inlet 1212 and the first outlet 1213, preventing the bridge portion 1223a from damaging the edges of the first heat exchange area 1211.

[0036] Preferably, the width of the bridge portion 1223a is greater than the width of the overlapping portion 1223b, which enhances the overall strength of the support structure 1223 and ensures that the overlapping portion 1223b overlaps the first heat exchange area 1211 stably.

[0037] After the subsequent atomic diffusion bonding, the overlapping portion 1223b remains in the flow passage between the passage plates of the microstructure 3, and can be essentially understood as a kind of microstructure 3.

[0038] The overlapping portion 1223b overlaps the edges of the first heat exchange area 1211 toward the first inlet 1212 and the first outlet 1213, and the strength of the overlapping portion 1223b is greater than that of the microstructure 3. The greater support strength of the overlapping portion 1223b improves the support and bonding strength of the edges of the first heat exchange area 1211 compared to a passage plate having only the microstructure 3. In one embodiment, the microstructure 3 is a hollow structure formed by pressing, and the overlapping portion 1223b is a solid structure that is resistant to deformation, and both are made of the same plate material, so the strength of the overlapping portion 1223b is greater than that of the microstructure 3.

[0039] Alternatively, the dimensions of the overlapping portion 1223b are larger than the dimensions of the microstructure 3, i.e., when projected in a direction perpendicular to the first heat exchange area 1211, the projection area of ​​the support structure 12237 onto the first heat exchange area 1211 is larger than the projection area of ​​the microstructure 3 onto the first heat exchange area 1211, thereby ensuring effective bonding between the support structure 12237 and the adjacent fluid flow path plate 1, reducing the production defect rate, and obtaining a heat exchanger 100 that is suitable for mass production, has a compact structure, and good heat exchange performance.

[0040] Preferably, the length of the overlapping portion 1223b in the OY direction is greater than the length of the microstructure 3, and the maximum width of the overlapping portion 1223b in the OX direction is 1 to 2.5 times, preferably 1.5 to 2 times, the width of the microstructure 3. This increases the contact area with the adjacent fluid flow path plate 1, avoiding the potential risk of ineffective bonding or weak bonding, and ensuring high pressure resistance and resistance to separation during subsequent use.

[0041] In a specific embodiment, the plurality of microstructures 3 are distributed along a plurality of sinusoidal curves, the sinusoidal curves extending in the OX direction, and the sinusoidal curves are spaced apart in the OY direction, and the length of the overlapping portion 1223b in the OY direction can cover at least two adjacent sinusoidal curves, preferably three sinusoidal curves.

[0042] The intersection of the overlapping portion 1223b and the sinusoidal curve is at the position of one microstructure 3 on the sinusoidal curve and replaces the microstructure 3 at that position, or the intersection is between two microstructures 3 on the sinusoidal curve.

[0043] Furthermore, a guide portion is provided on the overlapping portion 1223b at a side farther from the bridge portion 1223a to reduce the flow resistance of the working fluid. Specifically, the guide structure 1223c can be sharp or arc-shaped.

[0044] In addition, in the O-X direction, the width of the first inlet 1212 or the first outlet 1213 is larger than half the width of the first heat exchange area 1211, and the plurality of support structures 1223 are distributed at equal intervals in the O-X direction in the first inlet 1212 or the first outlet 1213, and accordingly, the overlapping portions 1223b are distributed at equal intervals in the O-X direction in the area of ​​the first heat exchange area 1211 close to the first inlet 1212 and the first outlet 1213. This serves as a "partition wall" to divide the relatively large first inlet 1212 and first outlet 1213 into a plurality of small sections, which improves the bonding strength between the sections and the adjacent passage plates during atomic diffusion bonding and can prevent internal leakage due to insufficient bonding strength.

[0045] Furthermore, the first inlet 1212 and the first outlet 1213 are respectively adjacent to both sides of the first base plate in the O-X direction. The manufacturing method of the fluid flow path plate 1 further includes forming two through holes on each side of the first heat exchange area 1211 in the O-Y direction by press working. One through hole 1216 is aligned with the first inlet 1212 in the O-X direction and corresponds to the second outlet 1113 of the second passage plate 111, and the other through hole 1215 is aligned with the outlet in the O-X direction and corresponds to the second inlet 1112 of the second passage plate 111. At the same time, a second inlet through hole 1224 corresponding to the second inlet 1112 and a second outlet through hole 1225 corresponding to the second outlet 1113 are also formed on the first spacer 122.

[0046] The method further includes the following steps: forming, by press working, positioning structures for positioning during stacking, order marks for checking the stacking order, and pin holes for facilitating stacking on the first base plate and the second base plate.

[0047] The process further includes the following steps: stacking the first spacer 122 and the first passage plate 121 in the thickness direction, with the spacer located on the side where the microstructure 3 protrudes. After stacking, the part of the support structure 1223 far from the first frame 1221 overlaps the edge of the first heat exchange area 1211 close to the first inlet 1212 or the first outlet 1213.

[0048] After the plates are stacked, the first spacer 122 and the first passage plate 121 are bonded together by an atomic diffusion bonding process. The atomic diffusion bonding is completed in a vacuum furnace, with a vacuum pressure of 3.5×10 Pa to 6×10 Pa, for example, 4×10 Pa, a surface pressure of 4 to 8 MPa, for example, 5 MPa, and a temperature of 1000°C to 1300°C, for example, around 1100°C.

[0049] The process further includes the following steps: removing the support structure 1223 exposed to the first inlet 1212 and the first outlet 1213, and leaving a part or all of the overlapping portion 1223b in the first heat exchange area 1211;

[0050] The lamination and atomic diffusion bonding steps can be completed in the process of the fluid flow plate 1, and are preferably integrated into the manufacturing process of the heat exchanger 100.

[0051] Using a similar method, a technician in this field can refer to the structural designs of Figures 4 to 6 to form the second passage plate 111 and the second spacer 112 by pressing, and then stack them to form the second fluid flow path plate 11 by atomic diffusion bonding.

[0052] The second passage plate 111 has the same overall shape as the first passage plate 121 and includes a second heat exchange area 1111, a second inlet 1112, a second outlet 1113, and a second atomic diffusion bonded portion 1114. The second inlet 1112 and the second outlet 1113 are located on both sides of the second heat exchange area 1111 in the OY direction, respectively, and the second atomic diffusion bonded portion 1114 is disposed to surround the second heat exchange area 1111, the second inlet 1112, and the second outlet 1113.

[0053] The only difference between the second heat exchange area 1111 and the first heat exchange area 1211 is as follows. The microstructures 3 of the two passage plates are both formed by pressing and have corresponding recesses on their backs. Therefore, although the shapes of the microstructures 3 of the second heat exchange area 1111 and the first heat exchange area 1211 are different, the center points of the two types of microstructures 3 are aligned in the O-XY direction, that is, the line connecting the two center points is parallel to the O-Z direction. Some areas of each microstructure 3 do not correspond to the recesses of the adjacent passage plate, but overlap with the areas around the recesses, realizing atomic diffusion bonding and avoiding the problem of bonding points being destroyed due to the pressure difference between the two types of working fluids.

[0054] It should be noted that if the microstructure 3 is a symmetrical figure, its central symmetric point becomes the center point, and if the microstructure 3 is an asymmetrical figure, the center point becomes the center of an equivalent circle of equal area after normalizing its contour.

[0055] In this embodiment, the microstructure 3 of the first heat exchange area 1211 has an elongated shape such as a diamond, oval, or gourd shape, while the microstructure 3 of the second heat exchange area 1111 has a circular shape. In the O-XY direction, the elongated microstructure 3 exceeds the circular microstructure 3 in the O-Y direction, and the circular microstructure 3 exceeds the elongated microstructure 3 in the O-X direction. The exceeding part forms a square support with the periphery of the recess of the adjacent passage plate, which serves as a support / bonding point during stacking and atomic diffusion bonding of the two adjacent passage plates.

[0056] Preferably, the excess length is 0.15 mm or more, and the excess area is 0.04 mm 2 More than 0.06mm, preferably 0.06mm 2 or less, ensuring sufficient bonding strength without affecting the heat exchange effect.

[0057] The second inlet 1112 and the second outlet 1113 are located on both sides of the first heat exchange area 1211 in the OY direction, and are adjacent to each other on both sides of the OX direction. In this embodiment, the first inlet 1212 and the second outlet 1113 are located on one side of the heat exchange area in the OY direction, and the first outlet 1213 and the second inlet 1112 are located on the other side of the heat exchange area in the OY direction.

[0058] The second spacer 112 is generally frame-shaped, and the only difference between the second spacer 112 and the first spacer 123 is that it does not include a support structure 1223. Specifically, the second spacer 112 includes a second frame 1121 for coupling with the second atomic diffusion bonded portion 1114, and a hollow region 1122 surrounded by the second frame 1121, and the hollow region 1122 is provided corresponding to the second heat exchange region 1111, the second inlet 1112, and the second outlet 1113.

[0059] In addition, a first inlet through-hole 1115 corresponding to the first inlet 1212 and a first outlet through-hole 1116 corresponding to the first outlet 1213 are formed on the second passage plate 111. Furthermore, a first inlet through-hole 1123 corresponding to the first inlet 1212 and a first inlet through-hole 1124 corresponding to the first outlet 1213 are formed on the second spacer 112.

[0060] After the first passage plate 121, the first spacer 122, the second passage plate 111, and the second spacer 112 are alternately stacked between the bottom plate and the cover plate and atomic diffusion bonded, a first inlet flow path is formed by the plurality of first inlets 1212 and the first inlet through holes, a first outlet flow path is formed by the plurality of first outlets 1213 and the first outlet through holes, a second inlet cavity is formed by the plurality of second inlets and the second inlet through holes, and a second outlet cavity is formed by the plurality of second outlets and the second outlet through holes.

[0061] The cover plate 81 and bottom plate (not shown) have a thickness of 2 to 3 mm, have strong pressure resistance, protect the internal fluid flow path plate 1, and are convenient for pressurization and atomic diffusion bonding. The cover plate 81 has openings corresponding to the first inlet flow path, the first outlet flow path, the second inlet flow path, and the second outlet flow path, and the bottom plate is flat. After the plates are stacked, they are pressed using a jig to perform atomic diffusion bonding.

[0062] When drawing a vacuum, air in the stacked plates is discharged through the working fluid flow paths, inlets, and outlets. If the air between the cover plate or bottom plate and the adjacent passage plate or spacer cannot be discharged through the inlets and outlets, a vacuum groove is formed on the inside of the cover plate, the inside of the bottom plate, or on the first or second working fluid flow path plate adjacent to the cover plate, or on the first or second working fluid flow path plate adjacent to the bottom plate. The shape of the vacuum groove is not limited as long as it can discharge air.

[0063] Specifically, the cover plate or the bottom plate may be adjacent to the first passage plate 121, the first spacer 122, the second passage plate 111, or the second spacer 112, and the vacuum grooves are provided on the opposing surfaces thereof. Preferably, the vacuum grooves are provided on the cover plate or the bottom plate, which simplifies the process and does not affect the strength of the working structure plate.

[0064] This type of working fluid is suitable for heat exchange between a high-pressure two-phase first working fluid and a low-pressure single-phase second working fluid. The direction in which the first working fluid enters the heat exchange core 8 is perpendicular to the direction in which it enters the first working fluid flow path. After entering the first inlet flow path, the first working fluid bends before entering the first fluid flow path. The collision force homogenizes the mixture, preventing gas-liquid separation and preventing the presence of only the gaseous first working fluid in some first working fluid flow paths from affecting heat exchange performance. The direction in which the second working fluid enters the heat exchange core 8 is approximately the same as the direction in which it enters the second working fluid flow path, resulting in low pressure loss.

[0065] Therefore, the method further includes a step of forming a second working fluid inlet and a second working fluid outlet on the opposite side of the heat exchange area of ​​the second inlet and second outlet flow paths. Specifically, a machine tool is used to cut a portion of the wall thickness from the outside to the inside. Then, the remaining wall is broken through to prevent iron chips from entering the working fluid flow path. Preferably, the machine tool (CNC machining) is used to cut a wall thickness of 0.03 to 0.07 mm from the outside to the inside, and then a drill or blade is used to break through the final barrier. This makes the operation simple and easy to implement.

[0066] Further included is the step of attaching tubing to mate with the first inlet 1212, first outlet 1213, second inlet 1112, and second outlet 1113, respectively, to facilitate fluid connection.

[0067] The housing 9 may be an outer wall plate of a portion of the heat exchange core 8, and for example, the cover plate 81 or the bottom may be part of the housing 9. The housing 9 may also be a complete housing that is not directly connected to the heat exchange core 8. Also, a portion of the housing 9 may be formed together with the heat exchange core 8, and for example, the portions of the housing 9 located on both sides in the stacking direction of the plurality of first fluid flow path plates 12 and the plurality of second fluid flow path plates 11 are stacked and joined together with the plurality of first fluid flow path plates 12 and the plurality of second fluid flow path plates 11.

[0068] The housing 9 includes an internal space 91 for accommodating the heat exchange core 8, a pair of first fluid ports 92 communicating with the first working fluid flow path, and a pair of second fluid ports 93 communicating with the second working fluid flow path, and is used for connecting to other heat exchange systems.

[0069] The heat exchange core 8 is placed in the internal space 91 of the housing 9, with the first inlet flow path and the first outlet flow path corresponding to a pair of first fluid ports 92, and the second inlet flow path and the second outlet flow path corresponding to a pair of second fluid ports, thereby forming a heat exchanger 100.

[0070] Furthermore, connecting pipes extending outward can be connected to the first fluid port 92 and the second fluid port 93 .

[0071] In the present invention, the heat exchange amount of the heat exchanger 100 can be adjusted by setting the number of laminated layers of the heat exchange core 8 and the number of heat exchange cores 8 in the housing 9.

[0072] 11 to 20, at least two heat exchange cores 8 are disposed in the housing 9 and connected in series and / or parallel to form a heat exchanger assembly 200, which makes it possible to easily adjust the heat exchange amount. For example, the current heat exchanger 100 with a temperature difference of 5 K, 14.4 L / min, and 5 kW can be easily expanded to a heat exchanger assembly 200 with a capacity of 10 kW, 15 kW, or 20 kW by connecting heat exchange cores 8 in series or parallel.

[0073] Typically, working fluid flow paths through which working fluids that require temperature adjustment flow are connected in series and / or parallel, i.e., working fluid flow paths through which working fluids that passively acquire energy flow are connected in series and / or parallel to improve heat exchange performance.

[0074] Connecting multiple heat exchange cores 8 in series is equivalent to the working fluid whose temperature needs to be adjusted undergoing heat exchange multiple times, while connecting multiple heat exchange cores 8 in parallel is equivalent to dividing the working fluid whose temperature needs to be adjusted, thereby improving its flow performance and heat exchange performance. For example, when the heat exchanger assembly 200 is used as an evaporator or a condenser to manufacture a low-temperature first or high-temperature first working fluid flow path, the second working fluid flow path is connected in series and / or in parallel.

[0075] Preferably, the working fluid flow paths are connected in series and / or in parallel such that the inflow direction into the heat exchange core 8 is substantially the same as the inflow direction into the working fluid flow path. In one embodiment, a plurality of heat exchange cores 8 are connected in a series and / or parallel connection manner of the second working fluid flow paths.

[0076] When at least two heat exchange cores 8 are connected in series, the inlet 4 communicating with the second working fluid of one heat exchange core 8 corresponds to the outlet 5 for the second working fluid of the adjacent second heat exchange core 8, and a series connection plate 94 connects the surface of the heat exchange core 8 where the second working fluid inlet is provided to the surface of the adjacent heat exchange core 8 where the second working fluid outlet is provided, thereby forming a series flow path. The second working fluid passes sequentially through at least two heat exchange cores 8. In this case, the housing 9 includes a pair of first fluid ports 92 communicating with the first working fluid flow path of each heat exchange core 8 and a pair of second fluid ports 93 communicating with the second working fluid flow path of at least two of the heat exchange cores 8.

[0077] A pair of first fluid ports 92 communicating with the first working fluid flow passage of each of the heat exchange cores 8 can be located on the same side or different sides of the housing 9, allowing for flexible installation according to specific requirements.

[0078] When at least two heat exchange cores 8 are connected in parallel, an inlet connecting plate 95 connects the faces of two adjacent heat exchange cores 8 where the second working fluid inlets are provided, and an outlet connecting plate 96 connects the faces of two adjacent heat exchange cores 8 where the second working fluid outlets are provided, and the at least two heat exchange cores 8 are arranged together in the internal space 91, dividing the internal space 91 into an inlet cavity 911 and an outlet cavity 912. The second working fluid enters the inlet cavity 911 through one second fluid structure 92, then passes through the multiple heat exchange cores 8 arranged in parallel, collects in the outlet cavity 912, and flows out through another second fluid port 93.

[0079] In this case, the housing 9 includes a pair of first fluid ports 92 communicating with the first working fluid flow path of each of the heat exchange cores 8, and a pair of second fluid ports 93 communicating with the inlet cavity 911 and the outlet cavity 912, respectively.

[0080] When connecting multiple heat exchange cores 8 in series and parallel, at least two heat exchange cores 8 can be first connected in series in the above manner, and then the series group formed by the multiple heat exchange cores 8 can be connected in parallel in the above manner. Specifically, a series connection plate 94 connects the surface of a heat exchange core 8 where the second inlet is provided to the surface of an adjacent heat exchange core 8 where the second outlet is provided to form a heat exchange core row, and the inlet connection plate 94 connects the surfaces of at least two heat exchange core rows where the second inlets are provided, and the outlet connection plate 95 connects the surfaces of the at least two heat exchange core rows where the second outlets are provided.

[0081] It should be understood that although the present specification is described according to embodiments, each embodiment does not include only independent technical solutions, and such description manner of the specification is for clarity only, and those skilled in the art can view the specification as a whole and appropriately combine the technical solutions of each embodiment to form other embodiments that are understandable to those skilled in the art.

[0082] The above series of detailed descriptions are merely specific descriptions of possible embodiments of the present invention, and do not limit the protection scope of the present invention; all equivalent embodiments or modifications that do not deviate from the technical idea of ​​the present invention should be included in the protection scope of the present invention.

Claims

1. A fluid flow path plate, a passage plate and a spacer; the passage plate includes a heat exchange area, an inlet and an outlet provided on both sides of the heat exchange area in the O-Y direction, and an atomic diffusion bonding portion provided to surround the heat exchange area, the inlet, and the outlet; the spacer includes a frame for coupling with the atomic diffusion bond, a hollow region surrounded by the frame, and at least one support structure extending from the frame into the hollow region; When the passage plate and the spacer are stacked, the support structure straddles the inlet and the outlet, and a free end of the support structure overlaps the heat exchange area. A fluid flow path plate comprising:

2. The support structure includes a bridge portion spanning the inlet or the outlet and an overlap portion overlapping the heat exchange area.

2. The fluid flow path plate according to claim 1.

3. An end of the bridge portion away from the overlapping portion is connected to a position on the frame corresponding to the opposite side of the heat exchange area from the inlet or the outlet.

3. The fluid flow path plate according to claim 2.

4. The width of the bridge portion is greater than the width of the overlap portion.

3. The fluid flow path plate according to claim 2.

5. In the OY direction, a guide structure is provided on the side of the overlapping portion facing the heat exchange area.

3. The fluid flow path plate according to claim 2.

6. A plurality of microstructures are provided in the heat exchange region, and the length of the overlapping portion is equal to or greater than the length of the microstructures in the OY direction.

6. The fluid flow path plate according to claim 4 or 5.

7. The plurality of microstructures are distributed along a plurality of sinusoidal curves, the sinusoidal curves extend in an O-X direction, and the plurality of sinusoidal curves are arranged at intervals in an O-Y direction, and the length of the overlapping portion in the O-Y direction can cover at least two adjacent sinusoidal curves.

7. The fluid flow path plate according to claim 6.

8. The intersection of the overlapping portion and the sinusoidal curve is located at a location where one of the microstructures is located or between two adjacent microstructures.

8. The fluid flow path plate according to claim 7.

9. In an O-X direction perpendicular to the O-Y direction, the width of the inlet or the outlet is greater than half the width of the heat exchange area, and the plurality of support structures are distributed at equal intervals in the O-X direction at the inlet or the outlet.

2. The fluid flow path plate according to claim 1.

10. 1. A heat exchanger comprising: a bottom plate, a cover plate, and a plurality of fluid flow path plates disposed between the bottom plate and the cover plate; the fluid flow path plates include coolant flow path plates and water flow path plates arranged alternately; The water flow path plate is a fluid flow path plate according to any one of claims 1 to 9. A heat exchanger characterized by:

11. 1. A heat exchanger comprising: at least two heat exchange cores and a housing; the heat exchange core includes a plurality of first working fluid flow path plates and a plurality of second working fluid flow path plates, the first working fluid flow path plates and the second working fluid flow path plates defining a plurality of first working fluid flow paths and second working fluid flow paths that are alternately spaced apart, the first working fluid flow path plates being the fluid flow path plates according to any one of claims 1 to 9; the housing includes an interior space for accommodating the at least two heat exchange cores, a pair of first fluid ports communicating with the first working fluid flow paths of the at least two heat exchange cores, and a pair of second fluid ports communicating with the second working fluid flow paths of each heat exchange core; The first working fluid flow paths of the at least two heat exchange cores are in communication with each other. A heat exchanger characterized by:

12. The direction of flow of the first working fluid into the heat exchange core is substantially the same as the direction of flow into the first working fluid flow path.

12. The heat exchanger according to claim 11.

13. Parts of the housing located on both sides of the plurality of first working fluid flow path plates and the plurality of second working fluid flow path plates in a stacking direction are stacked and coupled together with the plurality of first working fluid flow path plates and the plurality of second working fluid flow path plates.

12. The heat exchanger according to claim 11.

14. the heat exchange core includes a first inlet and a first outlet in communication with the first working fluid flow path; The housing further includes a series connection plate that connects a surface of the heat exchange core on which the first inlet is provided and a surface of another adjacent heat exchange core on which the first outlet is provided to form a series flow path.

12. The heat exchanger according to claim 11.

15. the heat exchange core includes a first inlet and a first outlet communicating with the first working fluid flow path, and the housing further includes an inlet connection plate connecting the faces of two adjacent heat exchange cores where the first inlets are provided, and an outlet connection plate connecting the faces of two adjacent heat exchange cores where the first outlets are provided, or The heat exchange core includes a first inlet and a first outlet communicating with the first working fluid flow path, and the housing further includes a heat exchange core array formed by connecting a surface of the heat exchange core where the first inlet is provided to a surface of another heat exchange core adjacent thereto where the first outlet is provided by a series connection plate, an inlet connection plate connecting the surfaces of at least two of the heat exchange core arrays where the first inlets are provided, and an outlet connection plate connecting the surfaces of the at least two heat exchange core arrays where the first outlets are provided.

12. The heat exchanger according to claim 11.

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