Micro-energy chip and heat exchanger formed by micro-energy chip

Abstract

The utility model discloses a micro-energy chip and a heat exchanger formed by the same. The micro-energy chip comprises a heat exchange area; the group of inlets and outlets are communicated with the heat exchange area and are respectively positioned on two sides of the heat exchange area along the O-X direction; the inlet and outlet through holes and the heat exchange area are arranged at intervals, and the inlet and outlet through holes are located in the two sides of the heat exchange area in the O-Y direction respectively; the inlets and outlets and the inlet and outlet through holes penetrate through the micro-energy chip in the thickness direction, the inlets and outlets and the inlet and outlet through holes are alternately arranged in the clockwise direction and jointly form a rotational symmetry graph, and the rotation angle is 90 degrees; and the plurality of positioning holes jointly form a rotational symmetry graph, the rotation angle is 90 degrees, and in the clockwise direction, the positioning holes are located between the inlet and outlet and the inlet and outlet through hole. According to the utility model, the positioning holes are all arranged in the micro-energy chip, an outer frame for auxiliary positioning during lamination is not needed, and the consumption and cost of sheets can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange, in particular to a micro energy chip and a heat exchanger composed of the same. Background Art

[0002] Existing heat exchangers typically use two different types of heat exchanger fins stacked alternately. This allows for ample space for inlets, outlets, and positioning holes, making alignment easier while also maintaining the design of other components. However, this requires manufacturing two different types of fins, which is costly. Using the same type of fins for stacking requires surrounding the fins and machining positioning holes within the frame, resulting in lower material utilization and increased production costs.

[0003] In view of this, it is necessary to provide a new micro energy chip and a heat exchanger composed of the same to solve the above technical problems. Utility Model Content

[0004] The purpose of the utility model is to provide a micro energy chip and a heat exchanger composed of the same.

[0005] In order to solve one of the above technical problems, the present invention adopts the following technical solution:

[0006] A micro energy chip, comprising:

[0007] heat exchange area;

[0008] A set of inlets and outlets communicating with the heat exchange zone, respectively located on both sides of the heat exchange zone along the OX direction;

[0009] A group of inlet and outlet through-holes are spaced apart from the heat exchange zone and are located on both sides of the heat exchange zone along the OY direction; the inlet and outlet and the inlet and outlet through-holes penetrate the micro energy chip along the thickness direction, and the inlet and outlet and the inlet and outlet through-holes are alternately arranged in a clockwise direction and together form a rotationally symmetrical pattern with a rotation angle of 90°;

[0010] A plurality of positioning holes together form a rotationally symmetrical figure with a rotation angle of 90°, and in a clockwise direction, the positioning holes are located between the inlet and outlet and the inlet and outlet through holes.

[0011] In an optional embodiment, in the OX direction, the outer edge of the positioning hole does not exceed the outer edge of the inlet and outlet, and / or

[0012] In the OY direction, the outer edge of the positioning hole does not exceed the outer edge of the inlet and outlet through holes.

[0013] In an optional embodiment, the distance between the positioning hole and the inlet and outlet is not less than the distance between the positioning hole and the inlet and outlet through holes.

[0014] In an optional embodiment, the heat exchange zone includes a central heat exchange zone and inlet and outlet transition zones located on both sides of the central heat exchange zone along the OX direction. The distance between the inlet and outlet and the inlet and outlet through-holes, the distance between the inlet and outlet through-holes and the heat exchange zone, and the length of the inlet and outlet transition zones along the OX direction are consistent.

[0015] In an optional embodiment, the distance between the positioning hole and the inlet and outlet, the distance between the positioning hole and the inlet and outlet through-holes, and the distance between the inlet and outlet and the inlet and outlet through-holes are consistent.

[0016] In an optional embodiment, the heat exchange zone includes a central heat exchange zone and inlet and outlet transition zones located on both sides of the central heat exchange zone along the OX direction; the inlet and outlet include a middle part and an outer expansion part located on both sides of the middle part; the length of the middle part in the OY direction, the length of the heat exchange zone in the OY direction, and the length of the central heat exchange zone in the OX direction are all the same.

[0017] In an optional embodiment, the length of the heat exchange zone in the OX direction is not greater than 50 mm.

[0018] In an optional embodiment, the length of the heat exchange zone in the OY direction is not greater than 35 mm, and the length of the central heat exchange zone in the OX direction and the OY direction is not greater than 25 mm.

[0019] A heat exchanger comprises the aforementioned micro-energy chip, wherein a plurality of micro-energy chips are stacked along the OZ direction, and the projection of any micro-energy chip along the OZ direction after being rotated 90° around its center coincides with that of an adjacent micro-energy chip; and a pair of inlet and outlet ports, a pair of inlet and outlet through-holes, and a plurality of positioning holes of a micro-energy chip are respectively aligned with a pair of inlet and outlet through-holes, a pair of inlet and outlet ports, and a plurality of positioning through-holes of an adjacent micro-energy chip along the OZ direction.

[0020] In an optional embodiment, the heat exchange zone includes a central heat exchange zone and inlet and outlet transition zones located on both sides of the central heat exchange zone along the OX direction. A plurality of first microstructures are provided in the central heat exchange zone, and the centers of the first microstructures of the plurality of micro energy chips are aligned in the OZ direction.

[0021] In an optional embodiment, the stacking thickness of the plurality of micro energy chips in the OZ direction is consistent with the width of the heat exchange area in the OY direction.

[0022] The beneficial effects of the present invention are as follows: the micro-energy chip of the present invention, the positions and shapes of the inlet and outlet, the inlet and outlet through-holes and the plurality of positioning holes are designed so that some of the micro-energy chips can be rotated 90° clockwise or counterclockwise, and then alternately stacked with the non-rotated micro-energy chips to form a heat exchanger, and the positioning holes are all arranged in the micro-energy chips, without the need to set an external frame for auxiliary positioning during stacking, which can reduce the amount and cost of sheet materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a micro energy chip in one embodiment of the present invention;

[0024] Figure 2 yes Figure 1 A partial enlarged view of part A in the middle;

[0025] Figure 3 yes Figure 1 A partial enlarged view of part B in the middle;

[0026] Figure 4 yes Figure 1 A partial enlarged view of the middle C area;

[0027] Figure 5 yes Figure 1 Schematic diagram of the structure of the micro energy chip after rotating 90° clockwise around the center of the central heat exchange area;

[0028] Figure 6 yes Figure 1 、 Figure 5 The schematic diagram of the micro energy chip after lamination is shown;

[0029] Figure 7 yes Figure 6 A partial enlarged view of the D part in the middle;

[0030] Figure 8 There are two Figure 1 Schematic diagram of the micro energy chip stack shown;

[0031] Figure 9 yes Figure 1 The micro energy chips shown are Figure 8 Schematic diagram of the method after lamination shown;

[0032] Figure 10 This is a schematic structural diagram of a micro energy chip in another embodiment of the present invention;

[0033] Figure 11 yes Figure 10 A partial enlarged view of the E part in the middle;

[0034] Figure 12 yes Figure 10A partial enlarged view of the F part in the middle;

[0035] Figure 13 yes Figure 12 A partial enlarged view of the middle G part;

[0036] Figure 14 yes Figure 10 Schematic diagram of the structure of the micro energy chip after rotating 90°;

[0037] Figure 15 yes Figure 10 、 Figure 14 The schematic diagram of the micro energy chip after lamination is shown;

[0038] Figure 16 yes Figure 15 A partial enlarged view of the middle H part;

[0039] Figure 17 There are two Figure 10 Schematic diagram of the micro energy chip stack shown;

[0040] Figure 18 yes Figure 10 The micro energy chips shown are Figure 17 Schematic diagram of the method after lamination shown;

[0041] Figure 19 for Figure 18 Schematic diagram of the heat exchanger after adding piping on the basis of .

[0042] Among them, 100-micro energy chip, 200-heat exchanger, 1-heat exchange area, 11-central heat exchange area, 111-first microstructure, 112-third microstructure, 12-inlet and outlet transition area, 121-second microstructure, 13-dam, 141-first guide surface, 142-second guide surface, 15-frame, 16-positioning hole, 2-inlet and outlet, 21-first inlet and outlet, 22-second inlet and outlet, 3-inlet and outlet through hole, 31-first inlet and outlet through hole, 32-second inlet and outlet through hole, 4-first inlet and outlet cavity, 41-first outer wall, 42-first piping, 5-second inlet and outlet cavity, 51-second outer wall, 52-second piping. DETAILED DESCRIPTION

[0043] The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0044] In the various drawings of the present invention, for the convenience of illustration, certain dimensions of structures or parts are exaggerated relative to other structures or parts. Therefore, they are only used to illustrate the basic structure of the subject matter of the present invention.

[0045] Please refer to Figures 1 to 19 1 , which is a micro energy chip 100 and a heat exchanger 200 according to a preferred embodiment of the present invention. The heat exchanger 200 includes a plurality of the micro energy chips 100 stacked together.

[0046] For ease of description, a coordinate system O-XYZ is set, where the OX, OY, and OZ directions are perpendicular to each other. The plane where the micro energy chip 100 is located is parallel to the O-XY plane, and a plurality of the micro energy chips 100 are stacked along the OZ direction to form the heat exchanger 200.

[0047] The micro-energy chip 100 includes a heat exchange region 1, a set of inlet and outlet ports 2 communicating with the heat exchange region 1, a set of inlet and outlet through-holes 3 spaced apart from the heat exchange region 1, and a positioning hole 16. The heat exchange region 1 is located in the center of the micro-energy chip 100. A set of inlet and outlet ports 2 are located on either side of the heat exchange region along the OX direction, respectively designated as a first inlet and outlet 21 and a second inlet and outlet 22. A set of inlet and outlet through-holes 3 are located on either side of the heat exchange region along the OY direction, respectively designated as a first inlet and outlet through-hole 31 and a second inlet and outlet through-hole 32. The positioning hole 16 is located around the heat exchange region 1 and between the inlet and outlet ports 2 and the inlet and outlet through-holes 3.

[0048] The heat exchange area 1 is recessed from the first surface to the second surface of the micro energy chip 100. The heat exchange area 1 includes a central heat exchange area 11 and inlet and outlet transition areas 12 located on both sides of the central heat exchange area 11 along the OX direction.

[0049] A plurality of first microstructures 111 are provided in the central heat exchange area 11. The first microstructures 111 protrude upward from the bottom of the central heat exchange area, dividing the heat exchange area 1 into interconnected microchannels to improve the heat exchange performance; and the first microstructures 111 act like a plurality of "pillars" as supports for the micro energy chip 100 and adjacent micro energy chips 100 or other plates, thereby improving the bonding strength of the two sheets and improving the pressure resistance of the heat exchanger 200.

[0050] The first microstructure 111 is long and extends along the OX direction, providing low resistance to fluid flow and reducing flow losses. Furthermore, the first microstructure 111 has inwardly concave portions on both sides of the OY direction, with sharp edges at the ends in the OX direction and at the edges of the concave portions. This frontier effect improves the heat exchange performance between the first microstructure 111 and the fluid.

[0051] In one embodiment, if Figure 4 As shown in FIG, the first microstructure 111 is elliptical or spindle-shaped. Figure 13 As shown, the first microstructure 111 is elliptical or spindle-shaped as a whole, and the first microstructure 111 has concave portions inwardly concave from both sides in the OY direction.

[0052] The size of the first microstructure 111 in the OX direction is no greater than 4 mm, or no greater than 3 mm, or no greater than 2 mm, or no greater than 1 mm, or no greater than 0.5 mm. The size of the first microstructure 111 in the OY direction is no greater than 0.5 mm, or no greater than 0.4 mm, or no greater than 0.3 mm, or no greater than 0.2 mm.

[0053] The distance between adjacent first microstructures 111 in any direction is 0.5 mm to 3 mm, preferably not more than 2.5 mm, preferably not more than 2 mm, preferably not more than 1.5 mm, preferably not more than 1.3 mm, preferably not more than 1 mm, preferably not more than 0.8 mm, preferably not more than 0.7 mm.

[0054] The sizes and spacings of the microstructures in other areas refer to this range and will not be described in detail below.

[0055] Please refer to Figure 2 、 Figure 11 As shown, the plurality of first microstructures 111 are arranged in a plurality of rows extending along the OX direction and spaced apart along the OY direction. The distance L1 between two adjacent rows of first microstructures 111 is half the distance L2 between two adjacent first microstructures 111 in each row. The first microstructures 111 in two adjacent rows are staggered along the OX direction, and the staggered distance is half the distance L2 between two adjacent first microstructures 111 in each row.

[0056] Alternatively, the first microstructures 111 are arranged in rows extending along the OY direction and spaced apart along the OX direction. The distance L3 between two adjacent rows of first microstructures 111 is half the distance L4 between two adjacent first microstructures 111 in each row. The first microstructures 111 in two adjacent rows are staggered along the OY direction, with the staggered distance being half the distance between two adjacent first microstructures 111 in each row.

[0057] like Figure 4 and Figure 13 As shown, the distance L4 between the centers of two adjacent first microstructures 111 in the same row is the same as the distance L2 between the centers of two adjacent first microstructures 111 in the same column. One of the first microstructures 111 is located at the center of the central heat exchange region 11, or four first microstructures 111 near the center of the central heat exchange region 11 are located in a square, and the center of the square is consistent with the center of the central heat exchange region 11.

[0058] When the outline of the central heat exchange area 11 is a regular centrosymmetric figure, such as a regular polygon or a circle, the geometric center point of the central heat exchange area 11 is the center of the central heat exchange area 11. When the outline of the central heat exchange area 11 is a non-centrosymmetric figure, the geometric center point of a centrosymmetric figure located inside and closest to the outline is used as the center of the central heat exchange area 11.

[0059] With this design, the center points of all first microstructures 111 coincide before and after the micro-energy chips are rotated 90°. A portion of the micro-energy chips 100 remain stationary, designated as the first micro-energy chips; another portion of the micro-energy chips 100 are rotated 90° around the center of their central heat exchange region 11, designated as the second micro-energy chips. The first and second micro-energy chips are stacked alternately along the OZ direction, so that the centers of all first microstructures 111 are aligned in the OZ direction.

[0060] In one embodiment, the center of the central heat exchange area 11 , the center of the heat exchange area 1 , and the center of the micro energy chip 100 coincide with each other.

[0061] In the present invention, the inlet and outlet transition zone 12 corresponds to the dam 13 between the heat exchange zone 1 and the inlet and outlet through-holes 3 , and the width of the inlet and outlet transition zone 12 in the OX direction is consistent with the width of the dam 13 in the OY direction.

[0062] A plurality of second microstructures 121 are provided in the inlet and outlet transition zone 12 , serving as supports between the inlet and outlet transition zone 12 and the dam 13 , and dividing the inlet and outlet transition zone 12 into a plurality of interconnected microchannels.

[0063] The area of ​​the second microstructure 121 is larger than that of the first microstructure 111 , which can enhance the bonding strength with the dam 13 or other plates of the adjacent micro energy chip 100 , and improve the pressure resistance and bonding strength of the inlet and outlet transition area 12 .

[0064] In the present invention, the area of ​​the second microstructure 121 is 1.3 to 2 times the area of ​​the first microstructure 111, such as 1.5, 1.7, or 1.8 times. If the area is too small, the bonding strength between the second microstructure 121 and the adjacent micro-energy chip 100 will be weakened; if the area is too large, the flow loss in the inlet and outlet transition zone 12 will increase.

[0065] The second microstructures 121 have the same shape and arrangement as the first microstructures 111 . The microchannels formed in the inlet and outlet transition zones 12 are similar in arrangement to the microchannels in the central heat exchange zone 11 , resulting in low flow loss.

[0066] In some embodiments, a third microstructure 112 is provided at the edge of the central heat exchange area 11 along the OX direction. When the first micro energy chip and the second micro energy chip are stacked, the third microstructure 112 is aligned with the edge of the heat exchange area 1 of the adjacent micro energy chip 100 .

[0067] Preferably, the shape of the third microstructure 112 adopts the shape of any one of the above-mentioned first microstructures 111, and the third microstructure 112 has the same size and arrangement as the first microstructure 111; the microchannels formed by dividing at the edge of the central heat exchange area 11 are similar to the arrangement of the microchannels in the central heat exchange area 11, and the flow loss is small.

[0068] The inlet and outlet 2 (the first inlet and outlet 21 and the second inlet and outlet 22) pass through the micro energy chip 100 and are connected to the heat exchange area 1. The fluid to be heat exchanged flows into the heat exchange area 1 through the first inlet and outlet 21, exchanges heat with the fluid in the interlayer in the heat exchange area 1, and then flows out of the heat exchange area 1 through the second inlet and outlet 22.

[0069] The inlet and outlet through holes 3 (first inlet and outlet through holes 31 and second inlet and outlet through holes 32 ) pass through the micro energy chip 100 and have a dam 13 between them and the heat exchange area 1 to block the fluid in the first inlet and outlet through holes 31 and second inlet and outlet through holes 32 from entering the heat exchange area 1 .

[0070] The inlets and outlets 2 and the inlet and outlet through-holes 3 are arranged alternately in a clockwise or counterclockwise direction and together form a rotationally symmetrical pattern with a rotation angle of 90°. When the first micro-energy chip and the second micro-energy chip are stacked alternately along the OZ direction, a group of inlets and outlets 2 of the first micro-energy chip are aligned with a group of inlet and outlet through-holes 3 of the second micro-energy chip along the OZ direction, and a group of inlet and outlet through-holes 3 of the first micro-energy chip are aligned with a group of inlet and outlet 2 of the second micro-energy chip along the OZ direction.

[0071] The plurality of positioning holes 16 collectively form a rotationally symmetrical pattern with a rotation angle of 90°. In a clockwise direction, the positioning holes 16 are located between the inlet and outlet 2 and the inlet and outlet through-hole 3. By placing the positioning holes 16 within the micro-energy chip 100, there is no need for an external frame to assist in positioning during stacking, reducing the amount of sheet material used and the cost. Furthermore, when the first and second micro-energy chips are alternately stacked along the OZ direction, the positioning holes 16 of all micro-energy chips are aligned along the OZ direction.

[0072] In the OX direction, the outer edge of the positioning hole 16 does not extend beyond the outer edge of the inlet and outlet 2; and / or in the OY direction, the outer edge of the positioning hole 16 does not extend beyond the outer edge of the inlet and outlet through-hole 3. The outer frame of the positioning hole 16 has sufficient width to enable effective atomic diffusion and bonding in the edge area and has sufficient pressure resistance.

[0073] The distance L5 between the positioning hole 16 and the inlet and outlet 2 is not less than the distance L6 between the positioning hole 16 and the inlet and outlet through-holes 3 , thereby ensuring the pressure resistance at the inlet and outlet 2 .

[0074] In one embodiment, the distance L5 between the positioning hole 16 and the inlet and outlet 2 is not less than the distance L6 between the positioning hole 16 and the inlet and outlet through-holes 3 , thereby ensuring the pressure resistance around the inlet and outlet 2 .

[0075] In one embodiment, the distance L5 between the positioning hole 16 and the inlet / outlet 2, the distance L6 between the positioning hole 16 and the inlet / outlet through-hole 3, and the distance L7 between the inlet / outlet 2 and the inlet / outlet through-hole 3 are consistent. The pressure resistance around the inlet / outlet 2 and the inlet / outlet through-hole 3 is consistent, and even when a high-pressure working fluid is introduced, tearing will not occur at the positioning hole 16.

[0076] In one embodiment, the distance between the inlet and outlet and the inlet and outlet through-hole, the distance between the inlet and outlet through-hole and the heat exchange zone, and the length of the inlet and outlet transition zone along the OX direction are consistent. The pressure resistance around the inlet and outlet 2 and the inlet and outlet through-hole 3 is consistent to avoid internal leakage.

[0077] The center of the micro energy chip 100 is aligned with the center of the central heat exchange area 11, and the outline of the micro energy chip 100 is rotationally symmetrical with a rotation angle of 90°. The outer contours of the micro energy chip 100 before and after rotating by a predetermined angle of 90° around its center coincide.

[0078] In addition, the micro energy chip 100 of the present invention is a small-sized compact heat exchanger with a size of no greater than 60 mm×60 mm, preferably no greater than 50 mm×50 mm, preferably no greater than 40 mm×40 mm, and a thickness of no greater than 3 mm, preferably no greater than 2 mm.

[0079] The heat exchange area 1 is formed by etching from the first surface to the second surface, and its depth is no greater than 1 / 2 of the thickness of the micro energy chip 100 to ensure that the warping of the micro energy chip is no greater than 0.05 mm.

[0080] The heat exchange zone 1 of the present invention has a length in the OX direction of no more than 50 mm, or no more than 40 mm, or no more than 30 mm, or no more than 20 mm. Therefore, the temperature difference between the fluid at the first inlet and outlet 21 and the second inlet and outlet 22 is small, resulting in a small temperature gradient in the OX direction throughout the heat exchange zone 1, thereby achieving high heat exchange performance throughout the heat exchange zone 1.

[0081] The length of the heat exchange zone 1 in the OY direction is not greater than 35 mm, or not greater than 30 mm, or not greater than 25 mm, or not greater than 20 mm, so the temperatures at different positions of the heat exchange zone 1 in the OY direction are also close.

[0082] In an optional embodiment, the length of the central heat exchange area 11 in the OX direction is consistent with the length in the OY direction. After the first micro energy chip and the second micro energy chip are stacked along the OZ direction, the central heat exchange areas 11 of two adjacent micro energy chips 100 are completely aligned along the OZ direction.

[0083] Preferably, the length of the central heat exchange zone 11 in the OX direction and the OY direction is not greater than 25 mm, the temperatures of the first inlet and outlet 21 and the second inlet and outlet 22 are basically the same, and within the entire heat exchange zone 1, the fluids on both sides maintain a large temperature difference, and the heat exchange performance is good.

[0084] Please refer to Figures 1 to 19 As shown, the present invention can utilize any of the aforementioned micro-energy chips 100 to form a heat exchanger 200. Several micro-energy chips 100 are stacked along the OZ direction. The projection of any micro-energy chip 100 rotated 90° about its center along the OZ direction overlaps with the projection of an adjacent micro-energy chip 100. Furthermore, the pair of inlet and outlet holes 2, the pair of inlet and outlet through-holes 3, and the plurality of positioning holes 16 of a micro-energy chip 100 are aligned along the OZ direction with the pair of inlet and outlet through-holes 3, the pair of inlet and outlet through-holes 2, and the plurality of positioning holes 16 of an adjacent micro-energy chip.

[0085] Specifically, the first micro energy chip and the second micro energy chip are alternately stacked along the OZ direction between the two end plates, so that the positioning holes 16 are inserted into the positioning pillars extending along the OZ direction to achieve positioning, and then combined into a whole through the atomic diffusion bonding process.

[0086] The atomic diffusion bonding is completed in a vacuum furnace with a vacuum pressure of 3.5×10 -3 Pa~6×10 -3 Pa, for example 4×10 -3 The applied surface pressure is 4-8 MPa, for example, 5 MPa; the temperature is 1000° C. to 1300° C., for example, around 1100° C. After atomic diffusion bonding, the joint portion of the first micro energy chip and the second micro energy chip is firmly bonded together.

[0087] Specifically, the first surface of the first micro-energy chip is combined with the second surface of the second micro-energy chip to form a first heat exchange channel for the first fluid to flow into the heat exchange area 1 of the first micro-energy chip. The first microstructure 111 of the first micro-energy chip is located within the first heat exchange channel, dividing the first heat exchange channel into a plurality of interconnected micro-channels. The first surface of the second micro-energy chip is combined with the second surface of the first micro-energy chip to form a second heat exchange channel for the second fluid to flow into the heat exchange area 1 of the second micro-energy chip. The first microstructure 111 of the second micro-energy chip is located within the second heat exchange channel, dividing the second heat exchange channel into a plurality of interconnected micro-channels.

[0088] The first microstructure 111 of the first microenergy chip and the first microstructure 111 of the second microenergy chip are aligned in the OZ direction to form a "pillar"-like structure, thereby improving the pressure resistance between the microenergy chips 100; at the same time, the aligned first microstructures 111 form a heat transfer channel along the OZ direction, thereby reducing the heat transfer path of the two fluids on both sides of the microenergy chip 100 and improving the heat exchange performance.

[0089] The inlet and outlet transition areas 12 of the first micro energy chip correspond to the dam 13 in the second micro energy chip. The second microstructure 121 is combined with the dam 13 to improve the compressive strength of the inlet and outlet transition areas 12 .

[0090] The third microstructure 112 of the first micro energy chip corresponds to the edge of the central heat exchange area 11 of the second micro energy chip. A portion of the third microstructure 112 is combined with the dam 13 of the second micro energy chip, and another portion is combined with the second surface of the heat exchange area 1 of the second micro energy chip.

[0091] The first inlet and outlet 21 of the first micro-energy chip and the first inlet and outlet through-hole 31 of the second micro-energy chip are aligned along the OZ direction, and together form a first inlet and outlet cavity 4 connected to a plurality of first heat exchange channels; the second inlet and outlet 22 of the first micro-energy chip and the second inlet and outlet through-hole 32 of the second micro-energy chip together form another first inlet and outlet cavity 4 connected to a plurality of first heat exchange channels.

[0092] Correspondingly, the first inlet and outlet through-hole 31 of the first micro-energy chip and the second inlet and outlet 22 of the second micro-energy chip are aligned along the OZ direction, jointly forming a second inlet and outlet cavity 5 connected to the heat exchange area 1 of several second micro-energy chips; the second inlet and outlet through-hole 32 of the first micro-energy chip and the first inlet and outlet through-hole 31 of the second micro-energy chip jointly form another second inlet and outlet cavity 5 connected to the heat exchange area 1 of several second micro-energy chips.

[0093] The first fluid flows into the first heat exchange channels through a first inlet and outlet cavity 4 and then flows out through another first inlet and outlet cavity 4 ; the second fluid flows into the second heat exchange channels through a second inlet and outlet cavity 5 and then flows out through the second inlet and outlet cavity 5 .

[0094] Furthermore, the first inlet / outlet 21, the second inlet / outlet 22, the first inlet / outlet through-hole 31, and the second inlet / outlet through-hole 32, which are located away from the heat exchange zone 1, form an outer wall after atomic diffusion and bonding. The outer wall includes a first outer wall 41 and a second outer wall 51, which respectively enclose the first inlet / outlet cavity 4 and the second inlet / outlet cavity 5. A hole is opened in the first outer wall 41 and connected to a first pipe 42. The first fluid enters the first inlet / outlet cavity 4 through the first pipe 42 and then enters the plurality of first heat exchange channels. A hole is opened in the second outer wall 51 and connected to a second pipe 52. The second fluid enters the second inlet / outlet cavity 5 through the second pipe 52 and then enters the plurality of second heat exchange channels.

[0095] In an optional embodiment, along the OY direction, the dimensions of the first inlet and outlet 21 and the second inlet and outlet 22 are larger than the dimensions of the heat exchange zone 1. Compared to the embodiment in which the dimensions of the first inlet and outlet 21 and the second inlet and outlet 22 are consistent with the dimensions of the heat exchange zone 1, the fluid of the present invention can be fully mixed after entering the first inlet and outlet cavity 4 and the second inlet and outlet cavity 5. On the surface entering the first heat exchange channels and the second heat exchange channels (the surface formed by the edge of the heat exchange zone 1 facing the inlet), the pressure difference between each area is very small, so that the fluid can enter each layer of the heat exchange zone 1 evenly and evenly enter each area of ​​the heat exchange zone 1 in the width direction.

[0096] Specifically, the inlet and outlet 2 includes a middle part and an outward expansion part located on both sides of the middle part; the length of the middle part in the OY direction, the length of the heat exchange area 1 in the OY direction, and the length of the central heat exchange area in the OX direction are all the same, ensuring that the fluid can fully enter the first heat exchange channel and the second heat exchange channel.

[0097] The size of the expanded portion is 0.15 to 0.3 of the size of the middle portion. If it is too narrow, the pressure in each area cannot be well balanced; if it is too wide, the size of the micro energy chip 100 will be increased, the area ratio of the heat exchange zone 1 in the entire micro energy chip 100 will be reduced, and the proportion of the effective heat exchange area will be reduced.

[0098] Taking into account factors such as pressure buffering and cost control, the width of the expanded portion is 0.22 to 0.25 of the width of the middle portion.

[0099] In another optional embodiment, along the OX direction, the first inlet and outlet 21 and the second inlet and outlet 22 have a first size; along the OY direction, the first inlet and outlet through-holes 31 and the second inlet and outlet through-holes 32 have a second size, and the ratio of the first size to the second size is not less than 1 / 3. The first size ensures that the fluid is in a relatively uniform state when entering the first and second heat exchange channels, thereby evenly entering each area.

[0100] The larger the ratio of the first dimension to the second dimension, the better the fluid mixing effect and the more balanced the pressure. However, if the first dimension is too large, it will increase the area and cost of the sheet. In the present invention, the ratio of the first dimension to the second dimension is 1 / 3 to 1 / 5.

[0101] A first guide surface 141 is provided on the edge of the heat exchange zone 1 facing the first inlet and outlet 21 and the second inlet and outlet 22, and the first guide surface 141 is provided on the first surface; and / or a second guide surface 142 is provided on the edge of the dam 13 facing the first inlet and outlet through holes 31 and the second inlet and outlet through holes 32, and the second guide surface 142 is located on the second surface and is indicated by a dotted line in the figure; it can reduce the resistance of the fluid in the first inlet and outlet cavity 4 and the second inlet and outlet cavity 5 to enter the first heat exchange channel and the second heat exchange channel.

[0102] In the present invention, the first fluid and the second fluid are two fluids with a temperature difference. When the temperature difference is above 5°C, the heat exchange performance is very good. Even with a small temperature difference of only 4.5°C, 4°C, 3.5°C, 3°C, 2.5°C, or 2°C, heat exchange can be achieved.

[0103] In one embodiment, the first fluid is the refrigerant running in the compressor refrigeration system, and the second fluid is water, a coolant, etc. that needs to be cooled or heated. In one embodiment, the first fluid is an antifreeze liquid with a temperature not exceeding 0°C, and the second fluid is water, a coolant, etc. that needs to be cooled. In one embodiment, the first fluid is a coolant with a temperature not exceeding 5°C, and the second fluid is water, a coolant, etc. that needs to be heated.

[0104] In summary, the micro-energy chip 100 of the present invention, the positions and shapes of the inlet and outlet 2, the inlet and outlet through-holes 3 and the plurality of positioning holes 16 are designed so that some of the micro-energy chips 100 can be rotated 90° clockwise or counterclockwise, and then alternately stacked with the non-rotated micro-energy chips 100 to form a heat exchanger, and the positioning holes 16 are all arranged inside the micro-energy chip 100, so there is no need to set an outer frame for auxiliary positioning during stacking, which can reduce the amount and cost of sheet material.

[0105] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0106] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A micro energy chip, characterized in that: include: heat exchange area; A set of inlets and outlets communicating with the heat exchange zone, respectively located on both sides of the heat exchange zone along the OX direction; A group of inlet and outlet through-holes are arranged at intervals from the heat exchange zone, and are respectively located on both sides of the heat exchange zone along the OY direction, where the OY direction is perpendicular to the OX direction; the inlet and outlet and the inlet and outlet through-holes both penetrate the micro-energy chip along the thickness direction, and the inlet and outlet and the inlet and outlet through-holes are alternately arranged in a clockwise direction and together form a rotationally symmetrical pattern with a rotation angle of 90°; A plurality of positioning holes together form a rotationally symmetrical figure with a rotation angle of 90°, and in a clockwise direction, the positioning holes are located between the inlet and outlet and the inlet and outlet through holes.

2. The micro energy chip according to claim 1, characterized in that: In the OX direction, the outer edge of the positioning hole does not exceed the outer edge of the inlet and outlet, and / or In the OY direction, the outer edge of the positioning hole does not exceed the outer edge of the inlet and outlet through holes.

3. The micro energy chip according to claim 1, characterized in that: The distance between the positioning hole and the inlet and outlet is not less than the distance between the positioning hole and the inlet and outlet through holes.

4. The micro energy chip according to claim 1, characterized in that: The heat exchange zone includes a central heat exchange zone and inlet and outlet transition zones located on both sides of the central heat exchange zone along the OX direction, and the distances between the inlet and outlet and the inlet and outlet through-holes, the distances between the inlet and outlet through-holes and the heat exchange zone, and the lengths of the inlet and outlet transition zones along the OX direction are consistent; or The distance between the positioning hole and the inlet and outlet, the distance between the positioning hole and the inlet and outlet through-holes, and the distance between the inlet and outlet and the inlet and outlet through-holes are consistent.

5. The micro energy chip according to claim 1, characterized in that: The heat exchange zone includes a central heat exchange zone and inlet and outlet transition zones located on both sides of the central heat exchange zone along the OX direction; the inlet and outlet include a middle portion and an outer expansion portion located on both sides of the middle portion; the length of the middle portion in the OY direction, the length of the heat exchange zone in the OY direction, and the length of the central heat exchange zone in the OX direction are all the same.

6. The micro energy chip according to any one of claims 1 to 5, characterized in that: The length of the heat exchange zone in the OX direction is not greater than 50 mm.

7. The micro energy chip according to claim 6, characterized in that: The length of the heat exchange zone in the OY direction is not greater than 35 mm; and / or The heat exchange zone includes a central heat exchange zone and inlet and outlet transition zones located on both sides of the central heat exchange zone along the OX direction; the length of the central heat exchange zone in the OX direction and the OY direction is consistent.

8. A heat exchanger, characterized in that: The invention comprises a plurality of micro-energy chips according to any one of claims 1 to 7, wherein the plurality of micro-energy chips are stacked along the OZ direction, and the projection of any micro-energy chip along the OZ direction after being rotated 90° around its center coincides with the projection of the adjacent micro-energy chip; and a pair of inlet and outlet, a pair of inlet and outlet through-holes, and a plurality of positioning holes of the micro-energy chip are respectively aligned with a pair of inlet and outlet through-holes, a pair of inlet and outlet, and a plurality of positioning through-holes of the adjacent micro-energy chip along the OZ direction.

9. The heat exchanger according to claim 8, characterized in that: The heat exchange zone includes a central heat exchange zone and inlet and outlet transition zones located on both sides of the central heat exchange zone along the OX direction. A plurality of first microstructures are provided in the central heat exchange zone, and the centers of the first microstructures of the plurality of micro energy chips are aligned in the OZ direction.

10. The heat exchanger according to claim 8, characterized in that: The stacking thickness of the plurality of micro energy chips in the OZ direction is consistent with the width of the heat exchange area in the OY direction.

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