heat exchanger

Abstract

The present application discloses a heat exchanger, comprising a first plate and a second plate, a first heat exchange channel and a second heat exchange channel are provided between the first plate and the second plate, and a dividing rib is provided between the first heat exchange channel and the second heat exchange channel, the heat exchanger having a first end and a second end, the first heat exchange channel and the second heat exchange channel being disconnected near the first end and connected near the second end, the heat exchanger further comprising a first port and a second port, the first port and the second port being close to the first end of the heat exchanger, the distance between the first port and the dividing rib being smaller than the distance between the second port and the dividing rib, and along the width direction of the heat exchanger, the heat exchanger having a first side and a second side, the distance between the first port and the dividing rib being smaller than the distance between the first port and the first side, and the distance between the second port and the dividing rib being larger than the distance between the second port and the second side, so that the fluid flows on the side of the first heat exchange channel close to the dividing rib and flows on the side of the second heat exchange channel away from the dividing rib, thereby improving the overall distribution uniformity of the fluid.

Description

Technical Field

[0001] The present application relates to the field of heat exchange technology, and in particular to a heat exchanger. Background Art

[0002] The heat exchanger in the related art includes two plates and the space between the two plates is divided into a first fluid channel and a second fluid channel by arranging a dividing rib between the two plates. The first fluid channel and the second fluid channel form a U-shaped loop. The first fluid channel is provided with a fluid inlet connected thereto, and the second fluid channel is provided with a fluid outlet connected thereto. The widths of the two fluid channels are usually the same, and the fluid inlet and the fluid outlet are usually arranged in the middle position of one end of the corresponding fluid channel. During the flow of the fluid in the first fluid channel, most of the fluid flows along the side close to the dividing rib. During the flow of the fluid in the second fluid channel, most of the fluid also flows along the side close to the dividing rib, resulting in poor overall distribution uniformity of the fluid in the heat exchanger. Summary of the Invention

[0003] The present application improves the heat exchanger to enhance the distribution uniformity of the heat exchanger.

[0004] The embodiment of the present application provides a heat exchanger including a first plate and a second plate, wherein a heat exchange channel is provided between the first plate and the second plate, wherein the heat exchange channel includes a first heat exchange channel and a second heat exchange channel, wherein the first heat exchange channel and the second heat exchange channel are arranged along the width direction of the heat exchanger, and a separating rib is provided between the first heat exchange channel and the second heat exchange channel. Along the length direction of the heat exchanger, the heat exchanger has a first end and a second end, wherein the first heat exchange channel and the second heat exchange channel are not connected near the first end of the heat exchanger, and are connected near the second end of the heat exchanger.

[0005] The heat exchanger further includes a first port communicating with the first heat exchange channel and a second port communicating with the second heat exchange channel, the first port and the second port being close to the first end of the heat exchanger, and a distance between the first port and the dividing rib along the width direction of the heat exchanger being smaller than a distance between the second port and the dividing rib;

[0006] Along the width direction of the heat exchanger, the heat exchanger has a first side and a second side, the first port is located between the first side of the heat exchanger and the dividing rib, the second port is located between the second side of the heat exchanger and the dividing rib, the distance between the first port and the dividing rib is smaller than the distance between the first port and the first side, and the distance between the second port and the dividing rib is larger than the distance between the second port and the second side.

[0007] Since the fluid tends to flow along the shortest path during the flow process, if the first port is set in the middle of the first heat exchange channel and the second port is set in the middle of the second heat exchange channel, the flow path between the first port and the second port along the direction close to the dividing rib is the shortest, and this path is the inner circle path. The flow path between the first port and the second port along the direction away from the dividing rib is the longest, and this path is the outer circle path, resulting in most of the fluid concentrating on the inner circle path. In this application, the first port is located between the first side of the heat exchanger and the dividing rib, and the second port is located between the second side of the heat exchanger and the dividing rib. The distance between the first port and the dividing rib is smaller than the distance between the first port and the first side, and the distance between the second port and the dividing rib is larger than the distance between the second port and the second side. Moreover, the distance between the first port and the dividing rib is smaller than the distance between the second port and the dividing rib, that is, the first port is arranged close to the dividing rib, and the second port is arranged away from the dividing rib. In the first heat exchange channel, most of the fluid flows close to the dividing rib, and in the second heat exchange channel, most of the fluid flows away from the dividing rib, which extends the flow length of the inner circle path in the second heat exchange channel, and part of the fluid flowing along the outer circle path in the first heat exchange channel can flow along the dividing rib in the second heat exchange channel, which shortens the flow length of the outer circle path in the second heat exchange channel, thereby reducing the length difference between the inner circle path and the outer circle path, making the fluid more evenly distributed in the first heat exchange channel and the second heat exchange channel, and improving the distribution uniformity of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A schematic structural diagram of the heat exchanger of this application;

[0009] Figure 2 Another structural schematic diagram of the heat exchanger for this application;

[0010] Figure 3 This is another structural schematic diagram of the heat exchanger of this application;

[0011] Figure 4 This is another structural schematic diagram of the heat exchanger of this application;

[0012] Figure 5 for Figure 4 Schematic diagram of the three-dimensional structure of the heat exchanger;

[0013] Figure 6 This is a structural diagram of a heat exchanger integrated with a transfer block in this application;

[0014] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0015] Figure 8 for Figure 5 Schematic diagram of the first cross-sectional structure in the AA direction;

[0016] Figure 9 Schematic diagram of a three-dimensional structure of a fin unit;

[0017] Figure 10 for Figure 5 Schematic diagram of the second cross-sectional structure in the AA direction. DETAILED DESCRIPTION

[0018] refer to Figures 1-10 The present application provides a heat exchanger 10, comprising a first plate 1 and a second plate 2, the first plate 1 and the second plate 2 being sealed and fixed, a heat exchange channel 3 being provided between the first plate 1 and the second plate 2, the outer side surface of the first plate 1 and the outer side surface of the second plate 2 being capable of exchanging heat with a heat-exchanged component, such as a battery assembly, along the length direction of the heat exchanger 10, the heat exchanger 10 has a first end and a second end, along the width direction of the heat exchanger 10, the heat exchanger 10 has a first side and a second side, as shown in FIG. Figure 1 、 Figure 3As shown, end A is the first end of the heat exchanger 10, end B is the second end of the heat exchanger 10, side C is the first side of the heat exchanger, and side D is the second side of the heat exchanger. The heat exchange channel 3 includes a first heat exchange channel 31 and a second heat exchange channel 32. The first heat exchange channel 31 and the second heat exchange channel 32 are arranged along the width direction of the heat exchanger 10. A separating rib 4 is provided between the first heat exchange channel 31 and the second heat exchange channel 32. The first heat exchange channel 31 and the second heat exchange channel 32 are not connected near the first end of the heat exchanger 10, and the first heat exchange channel 31 and the second heat exchange channel 32 are connected near the second end of the heat exchanger 10, that is, the first heat exchange channel 31 and the second heat exchange channel 32 form a U-shape. The heat exchanger 10 further comprises a first port 11 connected to the first heat exchange channel 31 and a second port 12 connected to the second heat exchange channel 32. The first port 11 and the second port 12 are close to the first end of the heat exchanger 10. The heat exchange fluid can enter the first heat exchange channel 31 from the first port 11, flow through the first heat exchange channel 31 and then flow into the second heat exchange channel 32 at the second end of the heat exchanger 10, and then flow out from the second port 12 after flowing through the second heat exchange channel 32. Alternatively, the heat exchange fluid can enter the second heat exchange channel 32 from the second port 12, flow through the second heat exchange channel 32 and then flow into the first heat exchange channel 31 at the second end of the heat exchanger 10, and then flow out from the first port 11 after flowing through the first heat exchange channel 31. Along the width direction of the heat exchanger 10, the first port 11 is located between the first side of the heat exchanger 10 and the dividing rib 4, and the second port 12 is located between the second side of the heat exchanger 10 and the dividing rib 4. The distance between the first port 11 and the dividing rib 4 is smaller than the distance between the first port 11 and the first side, the distance between the second port 12 and the dividing rib 4 is larger than the distance between the second port 12 and the second side, and the distance between the first port 11 and the dividing rib 4 is smaller than the distance between the second port 12 and the dividing rib 4, that is, the first port 11 is arranged close to the dividing rib 4, and the second port 12 is arranged away from the dividing rib 4.Since the fluid tends to flow along the shortest path during the flow process, if the first port 11 is set in the middle position of the first heat exchange channel 31 and the second port 12 is set in the middle position of the second heat exchange channel 32, the flow path between the first port 11 and the second port 12 along the direction close to the dividing rib 4 is the shortest, and this path is the inner circle path. The flow path between the first port 11 and the second port 12 along the direction away from the dividing rib 4 is the longest, and this path is the outer circle path, resulting in most of the fluid concentrating on the inner circle path. In this application, since the first port 11 connected to the first heat exchange channel 31 is set close to the dividing rib 4 along the width direction of the heat exchanger 10, and the second port 12 connected to the second heat exchange channel 32 is set away from the dividing rib 4 along the width direction of the heat exchanger 10, The rib 4 is provided, and the distance between the first port 11 and the dividing rib 4 is smaller than the distance between the second port 12 and the dividing rib 4. The fluid in the first heat exchange channel 31 tends to flow close to the dividing rib 4, and the fluid in the second heat exchange channel 32 tends to flow away from the dividing rib 4, that is, the flow length of the inner circle path in the second heat exchange channel 32 is extended, and part of the fluid flowing along the outer circle path in the first heat exchange channel 31 can flow along the dividing rib 4 in the second heat exchange channel 32, shortening the flow length of the outer circle path in the second heat exchange channel 32, thereby reducing the length difference between the inner circle path and the outer circle path, so that the fluid is more evenly distributed in the first heat exchange channel 31 and the second heat exchange channel 32, thereby improving the distribution uniformity of the heat exchanger 10.

[0019] In some embodiments, as Figure 1As shown, the first plate 1 and the second plate are rectangular structures, a heat exchange channel 3 is provided between the first plate 1 and the second plate, a dividing rib 4 is provided in the middle of the first plate 1 and the second plate, and the dividing rib 4 extends from the first end of the heat exchanger 10 to the second end of the heat exchanger 10, and the dividing rib 4 separates the heat exchange channel 3 into a first heat exchange channel 31 and a second heat exchange channel 32, wherein the width w1 of the first heat exchange channel 31 is substantially the same as the width w2 of the second heat exchange channel 32, the dividing rib 4 is connected to the first end of the heat exchanger 10, and there is a gap between the dividing rib 4 and the second end of the heat exchanger 10, so that the first heat exchange channel 31 and the second heat exchange channel 32 are not connected near the first end of the heat exchanger 10, and the first heat exchange channel 31 and the second heat exchange channel 32 are not connected near the first end of the heat exchanger 10. The second end of the heat exchanger 10 is connected through this gap. The heat exchanger 10 is provided with a first port 11 connected to the first heat exchange channel 31 and a second port 12 connected to the second heat exchange channel 32, wherein the first port 11 and the second port 12 are both close to the first end of the heat exchanger 10. Along the width direction of the heat exchanger 10, the first port 11 is located between the first side of the heat exchanger 10 and the dividing rib 4, and the second port 12 is located between the second side of the heat exchanger 10 and the dividing rib 4. The distance between the first port 11 and the dividing rib 4 is smaller than the distance between the first port 11 and the first side, and the distance between the second port 12 and the dividing rib 4 is larger than the distance between the second port 12 and the second side, that is, the distance between the first port and the dividing rib is less than 0.5w1, and the distance between the second port and the dividing rib is greater than 0.5w2.

[0020] It should be pointed out that the separating rib 4 can be provided only on the first plate 1, the separating rib 4 protrudes from the surface of the first plate 1 and is welded and fixed to the second plate, or the separating rib 4 can be provided only on the second plate, the separating rib 4 protrudes from the surface of the second plate and is welded and fixed to the first plate 1, or both the first plate 1 and the second plate are provided with separating ribs 4, the two separating ribs 4 are arranged opposite to each other and the two separating ribs 4 are welded and fixed.

[0021] In some embodiments, as Figure 2As shown, the first and second plates are rectangular in structure, with a heat exchange channel 3 disposed between them. A dividing rib 4 extending from the first end of the heat exchanger 10 to the second end is disposed midway between the first and second plates. The dividing rib 4 separates the heat exchange channel 3 into a first heat exchange channel 31 and a second heat exchange channel 32. The width of the first heat exchange channel 31 is smaller than the width of the second heat exchange channel 32. The heat exchanger 10 is provided with a first port 11 communicating with the first heat exchange channel 31 and a second port 12 communicating with the second heat exchange channel 32. The first port 11 is a fluid inlet, and the second port 12 is a fluid outlet. Both the first port 11 and the second port 12 are located near the first end of the heat exchanger 10. Along the width of the heat exchanger 10, the first port 11 is located near the dividing rib 4, while the second port 12 is located away from the dividing rib 4. Furthermore, the distance a1 between the first port 11 and the dividing rib 4 is smaller than the distance a2 between the second port 12 and the dividing rib 4. The refrigerant is circulated in the heat exchange channel. The refrigerant flows into the first heat exchange channel 31 from the first port 11, flows into the second heat exchange channel 32 at the second port 12 of the heat exchanger 10 after flowing through the first heat exchange channel 31, and flows out from the second port 12 after flowing through the second heat exchange channel 32. In the first heat exchange channel 31, the proportion of liquid refrigerant is relatively high. As the flow and heat exchange proceed, the liquid refrigerant gradually evaporates into gaseous refrigerant, and the proportion of gaseous refrigerant in the second heat exchange channel 32 increases. Since the flow resistance of the gaseous refrigerant is larger than that of the liquid refrigerant, and the temperature of the refrigerant is affected by the pressure, and the pressure is affected by the flow resistance, the flow resistance in the second heat exchange channel 32 is relatively large. The heat exchange effect of the heat exchanger 10 is greatly affected. By making the width of the first heat exchange channel 31 smaller than the width of the second heat exchange channel 32, the flow space of the first heat exchange channel 31 can be reduced to increase the flow space of the second heat exchange channel 32 without increasing the total flow space. Since the flow resistance of the second heat exchange channel 32 accounts for a large proportion of the total flow resistance, which is much greater than the flow resistance of the first heat exchange channel 31, the flow resistance reduction effect brought about by increasing the flow space of the second heat exchange channel 32 will be much greater than the flow resistance increase effect brought about by reducing the flow space of the first heat exchange channel 31, thereby reducing the flow resistance of the entire heat exchange channel 3 and improving the heat exchange effect of the heat exchanger 10.

[0022] Of course, in some embodiments, the first port 11 can be a fluid outlet, and the second port 12 can be a fluid inlet. At this time, the maximum width of the second heat exchange channel 32 connected to the second port 12 is smaller than the maximum width of the first heat exchange channel 31 connected to the first port 11. The refrigerant flows into the second heat exchange channel 32 from the second port 12, flows through the second heat exchange channel 32, and flows into the first heat exchange channel 31 at the second port 12 of the heat exchanger 10. After flowing through the first heat exchange channel 31, it flows out of the first port 11. In the second heat exchange channel 32, the proportion of liquid refrigerant is relatively high. As the flow and heat exchange proceed, the liquid refrigerant gradually evaporates into gaseous refrigerant. The proportion of gas-phase refrigerant in the first heat exchange channel 31 is increased. By making the width of the second heat exchange channel 32 smaller than the width of the first heat exchange channel 31 and increasing the flow space of the first heat exchange channel 31 by reducing the flow space of the second heat exchange channel 32, the flow resistance of the first heat exchange channel 31 accounts for a larger proportion of the total flow resistance, which is much greater than that of the second heat exchange channel 32. The effect of reducing the flow resistance brought about by increasing the flow space of the first heat exchange channel 31 will be much greater than the effect of increasing the flow resistance brought about by reducing the flow space of the second heat exchange channel 32, thereby reducing the flow resistance of the entire heat exchange channel 3 and improving the heat exchange effect of the heat exchanger 10.

[0023] In some embodiments, as Figure 3-Figure 5As shown, the heat exchanger 10 includes a first plate 1 and a second plate 2, a heat exchange channel 3 is provided between the first plate 1 and the second plate 2, and the first plate 1 or the second plate 2 is provided with a dividing rib 4 to divide the heat exchange channel 3 into a first heat exchange channel 31 and a second heat exchange channel 32. The first heat exchange channel 31 and the second heat exchange channel 32 are arranged along the width direction of the heat exchanger 10. Along the length direction of the heat exchanger 10, the dividing rib 4 includes a first dividing rib 41 and a second dividing rib 42. The first dividing rib 41 is closer to the first end of the heat exchanger 10 than the second dividing rib 42. The first dividing rib 41 and the second dividing rib 42 both have a first end and a second end. The first end 411 of the first dividing rib 41 is connected to the first end of the heat exchanger 10, the second end 412 of the first dividing rib 41 is connected to the first end 421 of the second dividing rib 42, and the second dividing rib 4 There is a gap between the second end 422 of the heat exchanger 10 and the second end of the heat exchanger 10. The first dividing rib 41 is arranged obliquely relative to the longitudinal direction of the heat exchanger 10. The first port 11 is located between the first side of the heat exchanger 10 and the first dividing rib 41, and the second port 12 is located between the second side of the heat exchanger 10 and the first dividing rib 41. The first port 11 is connected to the first heat exchange channel 31, and the second port 12 is connected to the second heat exchange channel 32. Along the width direction of the heat exchanger 10, the distance between the first end 411 of the first dividing rib 41 and the second port 12 is smaller than the distance between the second end 412 of the first dividing rib 41 and the second port 12. That is, the first end 411 of the first dividing rib 41 is inclined toward the second port 12, so that the first port 11 is closer to the second port 12 and ensures that the second heat exchange channel 32 has sufficient width, thereby reducing the pressure drop in the second heat exchange channel 32. The first port 11 and the second port 12 can be located on the same plate of the heat exchanger 10, or the first port 11 and the second port 12 can be located on different plates, such as Figure 3 As shown, the first port 11 and the second port 12 are both located on the first plate 1, as shown in FIG. Figure 4 、 Figure 5 As shown, the first port 11 is located on the first plate 1 , and the second port 12 is located on the second plate 2 . Of course, the first port 11 can be located on the second plate 2 , and the second port 12 can be located on the first plate 1 .

[0024] In some embodiments, as Figure 1-Figure 5 As shown, along the width direction of the heat exchanger 10, the maximum width of the first heat exchange channel 31 is w1, the distance between the first port 11 and the dividing rib 4 is a1, and Figure 3-Figure 5 In the figure, a1 refers to the distance between the first port 11 and the first dividing rib 41, wherein a1≤0.2w1, so that the first port 11 and the first dividing rib 41 are close enough to each other, so that the heat exchange fluid tends to flow close to the dividing rib 4 in the first heat exchange channel 31, the maximum width of the second heat exchange channel 32 is w2, and the distance between the second port 12 and the dividing rib 4 is a2, wherein a2≥0.2w2, so that the second port 12 and the dividing rib 4 have a sufficient distance. Figure 3-Figure 5In the figure, a2 refers to the distance between the second port 12 and the first dividing rib 41. Even if the first dividing rib 41 is tilted toward the second port 12, it can ensure that there is a sufficient distance between the second port 12 and the first dividing rib 41, so that the heat exchange fluid tends to flow away from the dividing rib 4 in the second heat exchange channel 32, thereby improving the overall distribution uniformity of the heat exchange fluid.

[0025] In some specific embodiments, Figure 3-Figure 5 As shown, along the width direction of the heat exchanger 10, the heat exchanger 10 has a first side and a second side. Figure 3 As shown, the C side is the first side of the heat exchanger 10, the D end is the second side of the heat exchanger 10, the first port 11 is located between the first side of the heat exchanger 10 and the first dividing rib 41, and the second port 12 is located between the second side of the heat exchanger 10 and the first dividing rib 41, wherein the distance between the second dividing rib 42 and the second side of the heat exchanger 10 is greater than the distance between the first port 11 and the second side of the heat exchanger 10, making the positions of the first port 11 and the second port 12 more compact. Of course, the distance between the second dividing rib 42 and the second side of the heat exchanger 10 can also be substantially the same as the distance between the first port 11 and the second side of the heat exchanger 10, or the distance between the second dividing rib 42 and the second side of the heat exchanger 10 can be less than the distance between the first port 11 and the second side of the heat exchanger 10. Figure 4 As shown, along the width direction of the heat exchanger 10, the distance between the first port 11 and the second side of the heat exchanger 10 is defined as a3, and the maximum width of the heat exchanger 10 is defined as w3, wherein a3≤0.6w3, so that there is a sufficient distance between the first port 11 and the first side of the heat exchanger 10, so that the heat exchange fluid tends to flow close to the dividing rib 4 in the first heat exchange channel 31, and the distance between the first port 11 and the second port 12 is reduced, so that the positions of the first port 11 and the second port 12 are more compact.

[0026] In some specific embodiments, Figure 2As shown, the first port 11 is elliptical, and the dimension of the first port 11 along the length of the heat exchanger 10 is greater than the dimension of the first port 11 along the width of the heat exchanger 10. The second port 12 is elliptical, and the dimension of the second port 12 along the length of the heat exchanger 10 is greater than the dimension of the second port 12 along the width of the heat exchanger 10. That is, the long side of the ellipse is arranged along the length of the heat exchanger 10. This reduces the distance between the first port 11 and the second port 12 while ensuring that the first port 11 and the second port 12 have sufficient flow area, making the first port 11 and the second port 12 more compact and convenient for integration with an adapter block, etc. Of course, the first port 11 and the second port 12 can also be other structures such as elongated strips, as long as the dimension of the first port 11 along the length of the heat exchanger 10 is greater than the dimension of the first port 11 along the width of the heat exchanger 10, or the dimension of the second port 12 along the length of the heat exchanger 10 is greater than the dimension of the second port 12 along the width of the heat exchanger 10.

[0027] like Figure 3-Figure 6 As shown, the first end of the heat exchanger 10 has a notch 6, that is, the first plate 1 and the second plate 2 both have a notch 6 of corresponding shape. When the first plate 1 and the second plate 2 are sealed and fixed, the notch 6 of the first plate 1 and the notch 6 of the second plate 2 form the notch 6 of the heat exchanger 10. Along the width direction of the heat exchanger 10, the notch 6 is located on the side of the first heat exchange channel 31 away from the first dividing rib 41, that is, the notch 6 is located on the first side of the heat exchanger 10, the first port 11 is located between the notch 6 of the heat exchanger 10 and the first dividing rib 41, and the second port 12 is located between the second side of the heat exchanger 10 and the first dividing rib 41. Along the length direction of the heat exchanger 10, the first heat exchange channel 31 is located on the side away from the first dividing rib 41. The hot channel 31 includes a guide channel 311 and a main channel 312. The guide channel 311 is located between the notch 6 and the first dividing rib 41, and the main channel 312 is located between the first side of the heat exchanger 10 and the second dividing rib 42. The first port 11 is connected to the guide channel 311, and the guide channel 311 is arranged at an angle. When the heat exchange fluid flows into the guide channel 311 from the first port 11, the guide channel 311 guides the heat exchange fluid toward the first side of the heat exchanger 10. Since the heat exchange fluid tends to flow close to the dividing rib 4, the heat exchange fluid in the first heat exchange channel 31 is guided more evenly in the width direction of the heat exchanger 10 through the guidance of the guide channel 311. Along the width direction of the heat exchanger 10, the width of the guide channel 311 is smaller than the width of the main channel 312, which increases the flow rate of the heat exchange fluid in the guide channel 311, so that the heat exchange fluid can flow better toward the first side of the heat exchanger 10 when entering the main channel 312 from the guide channel 311, and facilitates the diffusion of the heat exchange fluid in the main channel 312, thereby reducing the pressure drop of the heat exchange fluid.

[0028] In some embodiments, as Figure 4 、 Figure 5As shown, the second heat exchange channel 32 is provided with a blocking portion 5, which is close to the first end of the heat exchanger 10. Along the width direction of the heat exchanger 10, the blocking portion 5 divides the second heat exchange channel 32 into at least two second sub-channels 321, wherein the minimum width of the second sub-channel 321 close to the first dividing rib 41 is smaller than the minimum width of the second sub-channel 321 away from the first dividing rib 41. Through the blocking effect of the blocking portion 5 and the width relationship of the two second sub-channels 321, most of the heat exchange fluid in the second heat exchange channel 32 tends to flow toward the second side close to the heat exchanger 10.

[0029] In some embodiments, as Figure 6 、 Figure 7 As shown, the heat exchanger 10 also includes a adapter block 7, which is provided with a first inlet 71, a first outlet 72, a second inlet 73 and a second outlet 74. The first inlet 71 is connected to the first outlet 72, and the second inlet 73 is connected to the second outlet 74. The first port 11 and the second port 12 are both located on the first plate 1, the first port 11 is connected to the first outlet 72, and the second port 12 is connected to the second inlet 73. The heat exchange fluid flows in from the first inlet 71 of the adapter block 7, flows through the first outlet 72 and the first port 11, and then flows into the first heat exchange channel 31 of the heat exchanger 10. After flowing through the first heat exchange channel 31, it flows into the second heat exchange channel 32 from the second end of the heat exchanger 10, and flows out from the second outlet 74 after flowing through the second port 12 and the second inlet 73. The close arrangement of the first port 11 and the second port 12 facilitates the integration of the heat exchanger 10 and the adapter block 7, thereby improving the integration of product assembly. Among them, the adapter block 7 can be a part of the valve body, and the valve body includes a valve seat and a valve body part fixed to the valve seat. For example, the adapter block 7 is the valve seat, and the valve body part can be a thermal expansion valve or an electronic expansion valve, etc. The first port 11 and the second port 12 are arranged close to each other to facilitate the integration of the heat exchanger 10 and the valve body.

[0030] In some specific embodiments, Figure 7 As shown, the outer edge of the first plate 1 is provided with a first flange 13 bent away from the second plate 2, and the outer edge of the second plate 2 is provided with a second flange 21 bent toward the first plate 1. The first flange 13 is located on the inner side of the second flange 21, and the first flange 13 and the second flange 21 are sealed and fixed. At least a portion of the first flange 13 contacts the adapter block 7. The provision of the first flange 13 and the second flange 21 not only improves the sealing between the first plate 1 and the second plate 2, but also plays a role in positioning the adapter block 7, which not only facilitates the installation of the adapter block 7 but also improves the reliability of the installation structure of the adapter block 7 and the heat exchanger 10. Of course, in addition to the first flange 13, the adapter block 7 can also be positioned by the second flange 21. For example, the height of the second flange 21 is greater than the height of the first flange 13, and at least the portion of the second flange 21 that is higher than the first flange 13 can contact the adapter block 7, thereby achieving the positioning function of the adapter block 7.

[0031] like Figure 8 、 Figure 9 As shown, a heat exchange fin 8 is provided between the first plate 1 and the second plate 2. The heat exchange fin 8 includes a first fin portion 81 located in the first heat exchange channel 31 and a second fin portion 82 located in the second heat exchange channel 32. An opening for avoiding the separation rib 4 is provided between the first fin portion 81 and the second fin portion 82. The width of the first heat exchange channel 31 is smaller than the width of the second heat exchange channel 32. The width of the first fin portion 81 is smaller than the width of the second fin portion 82. The first fin portion 81 has a plurality of first fin units 801, and the second fin portion 82 has a plurality of second fin units 802. The first fin unit 801 and the second fin unit 802 are fin units with the same structure, as shown in FIG. Figure 8 As shown, the first fin unit 801 includes a base 8011 and two fins protruding from the base 8011. The two fins are arranged along the length direction of the heat exchanger 10, and the two fins are staggered along the width direction of the heat exchanger 10. Each fin includes a top 8012, a first side 8013 and a second side 8014. The first side 8013 and the second side 8014 are respectively located on opposite sides of the top 8012. The first side 8013 and the second side 8014 are both connected between the top 8012 and the base 8011. The first side 8013 of the two fins are staggered along the width direction of the heat exchanger 10, and a first window 8015 is formed between the first side 8013 of the two fins. The second side 8014 of the two fins are staggered along the width direction of the heat exchanger, and a second window 8016 is formed between the second side 8014 of the two fins. The second fin unit 802 has the same structure as the first fin unit 801 and will not be repeated here. Of course, the heat exchange fins 8 may also adopt other structures, such as a corrugated structure, etc., as long as the first fin unit 801 and the second fin unit 802 are fin units with the same structure.

[0032] Of course, in some specific embodiments, heat exchange fins can be respectively provided in the first heat exchange channel 31 and the second heat exchange channel 32, that is, the first heat exchange channel 31 is provided with a first fin, and the second heat exchange channel 32 is provided with a second fin. The first fin has a plurality of first fin units, and the second fin has a plurality of second fin units. The first fin unit and the second fin unit are fin units with the same structure. The fin unit can be of various structures, as long as the structure of the first fin unit and the second fin unit is the same.

[0033] In some specific embodiments, Figure 10As shown, heat exchange fins may not be provided in the first heat exchange channel 31 and the second heat exchange channel 32. By providing a raised structure 83 on the first plate 1 and the second plate 2 to turbulently disturb the heat exchange fluid, the heat exchange effect of the heat exchanger 10 is improved. The raised structure 83 located in the first heat exchange channel 31 is the same as the raised structure 83 located in the second heat exchange channel 32, thereby simplifying the raised structure 83 of the first plate 1 and the second plate 2. The blocking effect of the raised structure 83 located in the first heat exchange channel 31 on the heat exchange fluid is the same as or similar to the blocking effect of the raised structure 83 located in the second heat exchange channel 32 on the heat exchange fluid. The pressure drop of the heat exchange fluid in the first heat exchange channel 31 and the pressure drop of the heat exchange fluid in the second heat exchange channel 32 can be adjusted by adjusting the width of the first heat exchange channel 31 and the width of the second heat exchange channel 32. Of course, the protruding structure 83 may be provided in only one of the first plate 1 and the second plate 2 , as long as the protruding structure 83 located in the first heat exchange channel 31 is the same as the protruding structure 83 located in the second heat exchange channel 32 .

[0034] It should be understood that the structure of the heat exchange fins 8 or the protrusion structure 83 in the first heat exchange channel 31 and the second heat exchange channel 32 does not need to be exactly the same. Within the tolerance range, it is sufficient to ensure that the heat exchange fins 8 in the first heat exchange channel 31 and the heat exchange fins 8 in the second heat exchange channel 32 have similar flow resistance to the heat exchange fluid, or to ensure that the protrusion structure 83 in the first heat exchange channel 31 and the protrusion structure 83 in the second heat exchange channel 32 have similar flow resistance to the heat exchange fluid.

[0035] The heat exchanger provided by the present invention has been described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above examples is intended only to facilitate understanding of the core concepts of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. A heat exchanger, comprising a first plate and a second plate, a heat exchange channel being provided between the first plate and the second plate, the heat exchange channel comprising a first heat exchange channel and a second heat exchange channel, the first heat exchange channel and the second heat exchange channel being arranged along the width direction of the heat exchanger, a dividing rib being provided between the first heat exchange channel and the second heat exchange channel, the heat exchanger having a first end and a second end along the length direction of the heat exchanger, the first heat exchange channel and the second heat exchange channel being disconnected near the first end of the heat exchanger, and being connected near the second end of the heat exchanger, characterized in that: The heat exchanger further includes a first port communicating with the first heat exchange channel and a second port communicating with the second heat exchange channel, the first port and the second port being close to the first end of the heat exchanger, and a distance between the first port and the dividing rib along the width direction of the heat exchanger being smaller than a distance between the second port and the dividing rib; Along the width direction of the heat exchanger, the heat exchanger has a first side and a second side, the first port is located between the first side of the heat exchanger and the dividing rib, the second port is located between the second side of the heat exchanger and the dividing rib, the distance between the first port and the dividing rib is smaller than the distance between the first port and the first side, and the distance between the second port and the dividing rib is larger than the distance between the second port and the second side.

2. The heat exchanger according to claim 1, characterized in that Along the width direction of the heat exchanger, the maximum width of the first heat exchange channel is defined as w1, and the distance between the first port and the dividing rib is defined as a1, where a1≤0.2w1; And / or, along the width direction of the heat exchanger, the maximum width of the second heat exchange channel is defined as w2, and the distance between the second port and the dividing rib is defined as a2, wherein a2≥0.2w2.

3. The heat exchanger according to claim 1, characterized in that Along the length direction of the heat exchanger, the dividing rib includes a first dividing rib and a second dividing rib, the first dividing rib is closer to the first end of the heat exchanger than the second dividing rib, the first dividing rib and the second dividing rib both have a first end and a second end, the first end of the first dividing rib is connected to the first end of the heat exchanger, the second end of the first dividing rib is connected to the first end of the second dividing rib, and there is a gap between the second end of the second dividing rib and the second end of the heat exchanger, the first dividing rib is inclined relative to the length direction of the heat exchanger, and in the width direction of the heat exchanger, the distance between the first end of the first dividing rib and the second port is smaller than the distance between the second end of the first dividing rib and the second port.

4. The heat exchanger according to claim 3, characterized in that The first port is located between the first side of the heat exchanger and the first dividing rib, the second port is located between the second side of the heat exchanger and the first dividing rib, and the distance between the second dividing rib and the second side of the heat exchanger is greater than the distance between the first port and the second side of the heat exchanger.

5. The heat exchanger according to claim 4, characterized in that The first end of the heat exchanger has a notch, which is close to the first side of the heat exchanger. The first port is located between the notch and the first dividing rib. Along the length direction of the heat exchanger, the first heat exchange channel includes a guide channel and a main channel. The guide channel is located between the notch and the first dividing rib, and the main channel is located between the first side of the heat exchanger and the second dividing rib. The first port is connected to the guide channel. The guide channel is arranged at an angle. Along the width direction of the heat exchanger, the width of the guide channel is smaller than the width of the main channel.

6. The heat exchanger according to any one of claims 1 to 5, characterized in that: The first port is an inlet, the second port is an outlet, and along the width direction of the heat exchanger, the maximum width of the first heat exchange channel connected to the first port is smaller than the maximum width of the second heat exchange channel connected to the second port; Alternatively, the first port is an outlet, the second port is an inlet, and along the width direction of the heat exchanger, the maximum width of the second heat exchange channel connected to the second port is smaller than the maximum width of the first heat exchange channel connected to the first port.

7. The heat exchanger according to claim 6, characterized in that A heat exchange fin is provided between the first plate and the second plate, the heat exchange fin comprising a first fin portion located in the first heat exchange channel and a second fin portion located in the second heat exchange channel, the first fin portion having a plurality of first fin units, the second fin portion having a plurality of second fin units, the first fin units and the second fin units being fin units of the same structure; Alternatively, the first heat exchange channel is provided with a first fin, the second heat exchange channel is provided with a second fin, the first fin has a plurality of first fin units, the second fin has a plurality of second fin units, and the first fin units and the second fin units are fin units with the same structure; Alternatively, the first plate and / or the second plate is provided with a protruding structure, and the protruding structure located in the first heat exchange channel is the same as the protruding structure located in the second heat exchange channel.

8. The heat exchanger according to claim 6, characterized in that The second heat exchange channel is provided with a blocking portion, which is close to the first end of the heat exchanger. Along the width direction of the heat exchanger, the blocking portion divides the second heat exchange channel into at least two second sub-channels, wherein the minimum width of the second sub-channel close to the dividing rib is smaller than the minimum width of the second sub-channel away from the dividing rib.

9. The heat exchanger according to any one of claims 1 to 5, characterized in that: The heat exchanger also includes a transfer block, which is provided with a first inlet, a first outlet, a second inlet, and a second outlet. The first inlet is connected to the first outlet, and the second inlet is connected to the second outlet. The first port and the second port are both located on the first plate, and the first port is connected to the first outlet, and the second port is connected to the second inlet.

10. The heat exchanger according to any one of claims 1 to 5, characterized in that: The first port and the second port are located on both sides of the separation rib, a distance between the first port and the second side of the heat exchanger is defined as a3, and a maximum width of the heat exchanger is defined as w3, where a3≤0.6w3; And / or, the first port and the second port are both located on the first plate, the heat exchanger is further provided with a valve body, the valve body is communicated with the first port and the second port, the outer edge of the first plate is provided with a first flange bent away from the second plate, the outer edge of the second plate is provided with a second flange bent toward the first plate, the first flange is located on the inner side of the second flange, the first flange and the second flange are sealed and fixed, and at least a portion of the first flange or the second flange is in contact with the valve body; and / or, a dimension of the first port along the length direction of the heat exchanger is greater than a dimension of the first port along the width direction of the heat exchanger; And / or, a dimension of the second port along the length direction of the heat exchanger is greater than a dimension of the second port along the width direction of the heat exchanger.

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