Cooler, power system and carrier

Abstract

The invention relates to the field of cooling, and discloses a cooler, a power system and a carrier, and the cooler comprises a shell which is provided with a port for a first heat exchange medium to flow in or out; the heat exchange pipes are used for containing first heat exchange media and each comprise a pipe body and a flaring section, the pipe bodies are arranged in the shell, gaps used for containing second heat exchange media are formed between the pipe bodies and the inner wall of the shell, the flaring sections are connected to one ends of the pipe bodies and located at the ports, and the cross sectional area of the flaring sections is larger than that of the pipe bodies; and in the multiple flaring sections, the opposite surfaces of the adjacent flaring sections are connected, and the other surfaces are connected with the inner wall of the port, so that the port is separated from the gap. The cooler cancels a traditional mainboard, the flaring section is connected with the inner wall of the shell port after being combined, and the link of welding with the mainboard is omitted. The welding area of the flaring section and the port extends in the axial direction, the connection strength is improved, the reliability of extreme working conditions is enhanced, and the thermal stress cracking risk is reduced.

Description

Technical Field

[0001] This invention relates to the field of cooling technology, specifically to coolers, power systems, and vehicles. Background Technology

[0002] The exhaust gas recirculation cooler includes a housing, a main board connected to the housing, and a cooling plate that runs through the housing and is connected to the main board. The cooling pipes are a key component of the system and are usually fixed to the main board by welding to ensure the sealing and stability of the exhaust gas cooling path.

[0003] In related technologies, the welding area between the cooling pipe and the main board is relatively small, resulting in significant deficiencies in the structural strength and thermal shock resistance of the welded area. Under high-temperature engine operating conditions, especially in extreme situations where the cooler experiences boiling and dry burning, the welded area between the cooling pipe and the main board is prone to cracking due to thermal stress concentration, leading to water leakage. Summary of the Invention

[0004] The present invention provides a cooler, a power system and a vehicle to solve or improve the problem in the related art that the small welding area between the cooling pipe and the main board results in insufficient structural strength and thermal shock resistance of the welding part.

[0005] In a first aspect, the present invention provides a cooler, comprising:

[0006] The housing is provided with a port for the inflow or outflow of the first heat exchange medium; Multiple heat exchange tubes are used to contain a first heat exchange medium, and each includes a tube body and a flared section. The tube body is disposed inside the shell and has a gap between it and the inner wall of the shell for containing a second heat exchange medium. The flared section is connected to one end of the tube body and is located at the port. The cross-sectional area of ​​the flared section is larger than the cross-sectional area of ​​the tube body. In this configuration, among the plurality of flared sections, the opposing surfaces of adjacent flared sections are connected, and the remaining surfaces are connected to the inner wall of the port, thereby separating the port from the gap.

[0007] In one optional embodiment, the heat exchange tube further includes a transition section, the flared section is connected to the tube body through the transition section, and the cross-sectional area of ​​the transition section gradually increases along the direction from the tube body to the flared section; And / or, the cross-section of the port is square, and the cross-section of the flared section is square.

[0008] In one optional embodiment, the heat exchange tube extends axially along a first direction, a plurality of heat exchange tubes are arranged in an array along a second direction, and the flared sections of the plurality of heat exchange tubes are connected in sequence, with a gap between any two adjacent tubes, and the second direction intersects the first direction.

[0009] In one optional embodiment, the size of the flared section is larger than the size of the tube body, and in the third direction, the size of the flared section is equal to the size of the tube body, and the third direction, the second direction, and the first direction intersect each other.

[0010] In one alternative embodiment, between any two adjacent heat exchange tubes, at least one tube body has an outwardly protruding portion on its wall, the protruding portion being connected to the adjacent tube body.

[0011] In one alternative embodiment, along the second direction, among the plurality of heat exchange tubes, the heat exchange tube located at the end has an outwardly protruding portion away from the tube wall of the adjacent heat exchange tube, and the protruding portion is connected to the inner wall of the shell.

[0012] In one optional embodiment, the housing is provided with two ports, which are respectively facing opposite sides of the housing. Both ends of the tube are provided with flared sections, and the flared sections at both ends of the tube are respectively located at the two ports.

[0013] In one alternative embodiment, the inner wall of the housing is provided with an annular cavity surrounding the outside of the heat exchange tube, and the housing is provided with an opening communicating with the annular cavity for the inflow or outflow of a second heat exchange medium.

[0014] Secondly, the present invention also provides a power system including the cooler described above.

[0015] Thirdly, the present invention also provides a vehicle, including the cooler as described above or the power system as described above.

[0016] The cooler provided by this invention eliminates the traditional mainboard design, allowing multiple flared sections to connect to each other before being connected to the port, thus eliminating the soldering step between the cooling pipes and the mainboard. Since it no longer relies on the mainboard as an intermediate connector, the soldering position is no longer limited by the thin-walled structure of the mainboard, avoiding the problem of insufficient soldering area caused by the small thickness of the mainboard.

[0017] Based on this, the contact area between the outer peripheral wall of the flared section and the inner peripheral wall of the port can be extended along the axial direction of the heat exchange tube, thereby increasing the welding area. A larger welding area can not only improve the structural strength of the connection, but also enhance its reliability under extreme conditions such as high temperature, thermal cycling and thermal shock, and reduce the risk of cracking caused by thermal stress concentration.

[0018] In addition, since the mainboard is eliminated, the flared section is directly embedded and connected to the port of the shell, allowing the first heat exchange medium to smoothly and unobstructedly enter the flared section from the port and then flow into the tube body. This structure with stronger flow channel continuity can reduce flow resistance, improve the smoothness and uniformity of medium flow, help improve the overall heat exchange performance, and reduce vibration or noise problems caused by flow disturbance.

[0019] The power system and vehicle provided by the present invention, since they include the cooler provided by the present invention, also include all the advantages of the cooler mentioned above. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A schematic diagram of a cooler provided in an embodiment of the present invention; Figure 2 for Figure 1 The diagram shows the internal structure of the cooler. Figure 3 for Figure 2 The cooler shown is an isometric view after the intake and exhaust chambers have been removed. Figure 4 for Figure 2 The view shown is of the cooler after the air inlet chamber, air outlet chamber, water inlet pipe, and water outlet pipe have been removed. Figure 5 This is a schematic diagram of the structure of the heat exchange tube array arranged inside the shell according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the arrangement and connection of heat exchange tube arrays provided in an embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures: 1. Housing; 101. Port; 102. Annular cavity; 103. Opening; 2. Heat exchange tube; 201. Tube body; 202. Flared section; 203. Gradient section; 204. Flared structure; 205. Protrusion; 3. Air inlet chamber; 4. Air outlet chamber; 5. Water inlet pipe; 6. Water outlet pipe; X, first direction; Y, second direction; Z, third direction; D, gap. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In related technologies, the welding area between the cooling pipe and the main board is relatively small, meaning the welding area is proportional to the thickness of the main board, which is typically thin. This results in insufficient structural strength and thermal shock resistance at the welded joint. Under high-temperature engine operating conditions, especially extreme conditions like boiling and dry burning inside the cooler, the welded joint between the cooling pipe and the main board is prone to cracking due to thermal stress concentration, leading to water leakage.

[0025] To address or improve the problem in related technologies where the welding area between the cooling pipe and the motherboard is small, resulting in insufficient structural strength and thermal shock resistance at the welding point, this invention provides a cooler, a power system, and a vehicle.

[0026] The following is combined Figures 1 to 6 This describes the cooler provided in an embodiment of the present invention.

[0027] Specifically, the cooler includes a shell 1 and heat exchange tubes 2.

[0028] The housing 1 is provided with a port 101 for the inflow or outflow of the first heat exchange medium, for example, the first heat exchange medium is a gas.

[0029] The heat exchange tube 2 is used to contain the first heat exchange medium, and there are multiple heat exchange tubes 2, each including a tube body 201 and a flared section 202. The tube body 201 is disposed within the shell 1, that is, the tube body 201 passes through the interior of the shell 1, and a gap D is provided between the outer wall of the tube body 201 and the inner wall of the shell 1 for containing the second heat exchange medium. For example, the second heat exchange medium can be a liquid such as a coolant.

[0030] The flared section 202 is connected to one end of the tube body 201, and the flared section 202 is located at port 101. The cross-sectional area of ​​the flared section 202 is larger than the cross-sectional area of ​​the tube body 201. Here, the cross-sectional area refers to the area of ​​the cross-section perpendicular to the axial direction of the heat exchange tube 2.

[0031] In this configuration, adjacent flared sections 202 have their opposing surfaces connected, while the remaining surfaces are connected to the inner wall of port 101, thus separating port 101 from gap D. Specifically, the flared sections 202 of multiple heat exchange tubes 2 are arranged in an array and connected to form a flared structure 204. The outer peripheral wall of the flared structure 204 is connected to the inner peripheral wall of port 101, ensuring that each flared section 202 communicates with port 101 and separates port 101 from gap D, allowing the first heat exchange medium to flow between port 101 and each flared section 202. The outer peripheral contour of the flared structure 204 is adapted to the inner peripheral contour of port 101, facilitating the separation of port 101 from gap D.

[0032] Specifically, the flared sections 202 are welded or bonded together, and the outer peripheral wall of the flared structure 204 is welded or bonded together with the inner peripheral wall of the port 101.

[0033] The cooler provided in this embodiment of the invention eliminates the traditional mainboard design, allowing the flared sections of multiple heat exchange tubes 2 to be connected to each other before being connected to port 101, thereby eliminating the welding step between the cooling tubes and the mainboard. Since it no longer relies on the mainboard as an intermediate connector, the welding position is no longer limited by the thin-walled structure of the mainboard, avoiding the problem of insufficient welding area caused by the small thickness of the mainboard.

[0034] Based on this, the contact area between the outer peripheral wall of the flared section 202 and the inner peripheral wall of the port 101 can be extended along the axial direction of the heat exchange tube 2, thereby increasing the welding area. The larger welding area can not only improve the structural strength of the connection part, but also enhance its reliability under extreme conditions such as high temperature, thermal cycling and thermal shock, and reduce the risk of cracking caused by thermal stress concentration.

[0035] Similarly, the contact area between adjacent flared sections 202 can also extend along the axial direction of the heat exchange tube 2, thereby increasing the welding area and thus improving the connection strength between adjacent heat exchange tubes 2.

[0036] In addition, in the traditional structure, the motherboard is usually placed horizontally at the port 101 of the housing 1, with through holes for the cooling pipes to pass through. The position of the motherboard without through holes will inevitably form a local obstruction in the medium flow channel, which will lead to increased airflow resistance, uneven flow velocity distribution, and even the generation of eddies or dead zones, affecting heat exchange efficiency.

[0037] In this invention, since the main board is eliminated, the flared section 202 is directly embedded in and connected to the port 101 of the housing 1, so that the first heat exchange medium can smoothly and unobstructedly enter the flared section 202 from the port 101 and then flow into the interior of the tube 201. This structure with stronger flow channel continuity can reduce flow resistance, improve the smoothness and uniformity of medium flow, help improve the overall heat exchange performance, and reduce vibration or noise problems caused by flow disturbance.

[0038] In some embodiments provided by the present invention, the heat exchange tube 2 further includes a transition section 203. The flared section 202 is connected to the tube body 201 through the transition section 203, and the cross-sectional area of ​​the transition section 203 gradually increases along the direction from the tube body 201 to the flared section 202.

[0039] In this embodiment, a transition section 203 is added and its cross-sectional area gradually increases along the direction from the tube body 201 to the flared section 202. This enables a smooth transition between the tube body 201 and the flared section 202, avoiding stress concentration areas caused by abrupt changes in cross-section when the two are directly connected. This further improves the overall structural stability and fatigue resistance of the heat exchange tube 2. Especially in scenarios where the engine frequently starts and stops and the operating temperature changes drastically, it can effectively reduce the risk of cracking of the heat exchange tube 2 due to repeated stress.

[0040] Meanwhile, this smooth transition structure can optimize the flow path of the first heat exchange medium, reduce the flow resistance and eddy current phenomenon of the medium at the connection between the tube body 201 and the flared section 202, and allow the medium to enter the tube body 201 more smoothly from the port 101 or flow out of the tube body 201 to the port 101. This not only improves the flow efficiency of the medium, but also reduces the energy loss and noise caused by local eddy currents, which helps to further improve the heat exchange efficiency and quiet operation of the cooler.

[0041] refer to Figures 3-6 As shown, in some embodiments provided by the present invention, the heat exchange tube 2 extends axially along the first direction X, and multiple heat exchange tubes 2 are arranged in an array along the second direction Y, the second direction Y intersecting the first direction X.

[0042] In this structure, the flared sections 202 of multiple heat exchange tubes 2 are connected in sequence to form a flared structure 204, that is, multiple flared sections 202 are arranged in an array and welded together in sequence. There is a gap between any two adjacent tube bodies 201. Since the cross-sectional area of ​​the flared section 202 is larger than the cross-sectional area of ​​the tube body 201, when the flared sections 202 are connected, a gap is naturally formed between the tube bodies 201, which allows the second heat exchange medium to flow.

[0043] In this embodiment, multiple heat exchange tubes 2 are arranged in an array along a second direction Y intersecting their own axial direction. This not only achieves a compact spatial layout but also connects sequentially through flared sections 202 to form an integrated flared structure 204, effectively improving the overall connection strength and sealing reliability. Since the cross-sectional area of ​​the flared section 202 is larger than that of the tube body 201, when adjacent flared sections 202 are welded together, a gap is naturally left between their corresponding tube bodies 201. This gap can serve as a flow channel for the second heat exchange medium, thereby forming a uniform, continuous, and reasonably distributed liquid flow path within the shell 1.

[0044] refer to Figure 6 As shown, in some embodiments provided by the present invention, the cross-section of port 101 is square, and the cross-section of flared section 202 is square.

[0045] In this embodiment, the square cross-section allows the outer wall of the flared section to make full-circumferential contact with the inner wall of the port, thereby increasing the effective area of ​​the welding connection and further improving the structural strength and sealing performance of the connection part; at the same time, the corners of the square structure provide a positioning reference for the arrangement of the heat exchange tube array along the second direction, which facilitates the quick and neat array splicing of the flared sections of multiple heat exchange tubes and improves assembly efficiency.

[0046] It is understood that the heat exchange tubes are not limited to forming a linear array in the second direction Y. For example, in other embodiments not shown, multiple heat exchange tubes may form a rectangular array in the second direction Y and the third direction Z.

[0047] refer to Figure 4 and Figure 5 As shown, in some embodiments provided by the present invention, in the second direction Y, the size of the flared section 202 is larger than the size of the tube body 201. Correspondingly, in the second direction Y, the side edges of the flared sections 202 located at both ends are connected to the inner wall of the port 101 away from the adjacent flared sections 202, and the two adjacent flared sections 202 are connected to each other.

[0048] In the third direction Z, the size of the flared section 202 is equal to the size of the pipe body 201. Correspondingly, in the third direction Z, both ends of each flared section 202 are connected to the inner wall of the port 101. The third direction Z, the second direction Y, and the first direction X intersect each other; for example, the third direction Z, the second direction Y, and the first direction X are perpendicular to each other.

[0049] In this embodiment, in the second direction Y, due to the lateral expansion of the flared section 202, the outer edges of the flared sections 202 located at both ends of the array can be directly sealed and connected to the inner wall of the port 101 of the housing 1, while the flared sections 202 in the middle are welded together to form a continuous integral flared structure 204, thereby constructing a stable and sealed connection interface in the second direction Y, effectively transferring loads and resisting thermal stress deformation.

[0050] Meanwhile, in the third direction Z, the flared section 202 is not widened, and its size is consistent with that of the tube body 201, so that both ends of each flared section 202 in this direction can be directly attached to the inner wall of the port 101 and achieve a sealed connection, thereby ensuring that the flared structure 204 forms a seal with the port 101 of the shell 1 in the third direction Z, further enhancing the overall sealing reliability.

[0051] In some embodiments provided by the present invention, between any two adjacent heat exchange tubes 2, at least one tube body 201 has an outwardly protruding protrusion 205 on its tube wall, and the protrusion 205 is connected to the adjacent tube body 201.

[0052] In this embodiment, between any two adjacent heat exchange tubes 2, at least one tube body 201 has an outwardly protruding protrusion 205 on its tube wall. The protrusion 205 is directly connected to the adjacent tube body 201, for example, by welding.

[0053] This design enhances the mechanical connection strength and overall rigidity between adjacent heat exchange tubes 2 without significantly increasing the overall volume. Especially when the cooler undergoes drastic temperature changes or vibration conditions, the protrusion 205, as a local reinforcement structure, can suppress the relative displacement between the tubes 201, reduce fatigue damage caused by thermal expansion differences or external excitation, and thus improve the structural durability of the cooler.

[0054] Furthermore, the protrusions 205 can also be used to precisely control the spacing between adjacent tubes 201. By rationally arranging the height and position of the protrusions 205, a stable and uniform flow channel gap can be maintained between adjacent tubes 201, providing a reliable and uniformly distributed flow path for the second heat exchange medium, avoiding local blockage or flow short-circuiting, and thus optimizing heat exchange efficiency.

[0055] In some embodiments provided by the present invention, the protrusion 205 is a stamped protrusion.

[0056] In this embodiment, the protrusion 205 is made by stamping. Stamping does not require additional parts. The protrusion 205 can be formed by plastic deformation of the tube body 201 itself. This simplifies the production process, reduces material costs, and ensures the integrated structure of the protrusion 205 and the tube body 201. It also avoids new stress concentration points caused by additional welding or assembly of the protrusion 205, and improves the structural integrity of the tube body 201 itself.

[0057] Furthermore, each of the adjacent pipe bodies 201 has a protrusion 205 on its sidewall that is close to each other, and the protrusions 205 are connected to each other in a one-to-one correspondence between the two adjacent pipe bodies 201.

[0058] In this embodiment, the stamped protrusions of adjacent tubes 201 are connected one-to-one, which can distribute the connection and positioning functions undertaken by the protrusion 205 to two opposite protrusions 205, thereby reducing the protrusion height of a single protrusion 205, avoiding the stamping risk caused by excessive protrusion height, avoiding defects such as thinning of the sidewall and cracking of the tube material due to excessive stretching, improving the yield of the stamping process, and also avoiding the problem of stress concentration and easy deformation by external force collision during subsequent assembly or operation due to excessive height of the protrusion 205.

[0059] In some embodiments provided by the present invention, the sidewall of the tube 201 is provided with a plurality of protrusions 205, and the plurality of protrusions 205 are arranged in an array and spaced apart from each other.

[0060] In this embodiment, the array layout of multiple sets of protrusions 205 can distribute the connection points between tubes 201 at multiple locations on the sidewall of tubes 201, making the stress on adjacent tubes 201 more balanced, avoiding breakage or loosening due to excessive stress on a single connection point, and improving the overall structural stability and deformation resistance of the heat exchange tube array 2.

[0061] Meanwhile, the multiple protrusions 205 are spaced apart from each other, which will not block the gap channel between adjacent tubes 201, ensuring the smooth flow of the second heat exchange medium in the gap. The array-distributed protrusions 205 can play a certain role in turbulence of the medium flow, breaking the laminar boundary layer formed on the surface of the tube 201, enhancing the turbulent heat exchange effect between the medium and the tube 201, and further improving the heat exchange efficiency of the cooler.

[0062] In some embodiments provided by the present invention, along the second direction Y, among a plurality of heat exchange tubes 2, the heat exchange tube 2 located at the end has an outwardly protruding portion 205 on the tube wall away from the adjacent heat exchange tube 2, and the protruding portion 205 is connected to the inner wall of the shell 1. For example, the protruding portion 205 is provided on the tube body 201, and the protruding portion 205 is welded to the inner wall of the shell 1.

[0063] In this embodiment, a multi-point support connection structure can be formed between the end heat exchange tube 2 and the shell 1, avoiding the single force mode of relying solely on the connection between the flared section 202 and the port 101. The stress borne by the end heat exchange tube 2 is distributed to the connection point between the protrusion 205 and the shell 1 and the connection part between the flared section 202 and the port 101, avoiding the deformation or cracking of the end heat exchange tube 2 due to concentrated stress, and further enhancing the overall structural rigidity of the heat exchange tube 2 array after assembly with the shell 1.

[0064] Meanwhile, the end heat exchange tube 2 is connected to the inner wall of the shell 1 through the protrusion 205, which can accurately limit the arrangement position of the entire heat exchange tube 2 array, prevent the heat exchange tube 2 array from shifting under high temperature, high pressure or vibration conditions, ensure the stability of the gap size between the tubes 201, and ensure the smooth flow of the second heat exchange medium.

[0065] Correspondingly, the heat exchange tube 2 at the end is provided with a plurality of protrusions 205 away from the tube wall of the adjacent heat exchange tube 2, and the protrusions 205 are arranged in an array and have a gap between them.

[0066] In this embodiment, the array layout of multiple protrusions 205 can form a multi-point distributed support connection structure between the end heat exchange tube 2 and the shell 1. This can distribute the stress borne by the end heat exchange tube 2 more evenly to the connection points of each protrusion 205 and the connection points of the flared section 202 and the port 101, reducing the risk of local stress concentration and preventing the end heat exchange tube 2 from deforming, cracking or loosening under high temperature vibration and pressure fluctuation conditions. This further enhances the overall structural stability and fatigue resistance of the heat exchange tube 2 array after it is assembled with the shell 1.

[0067] Meanwhile, the multiple protrusions 205 are spaced apart from each other, which will not block the flow space of the second heat exchange medium between the end tube 201 and the inner wall of the shell 1, ensuring that the medium can flow smoothly through the end area and ensuring the consistency of heat exchange efficiency in each area of ​​the cooler.

[0068] In some embodiments provided by the present invention, the housing 1 is provided with two ports 101, the two ports 101 facing opposite sides of the housing 1 respectively, and both ends of the tube 201 are provided with flared sections 202, and the flared sections 202 at both ends of the tube 201 are respectively disposed in the two ports 101.

[0069] In this embodiment, the shell 1 has two ports 101 facing opposite sides, and both ends of the tube 201 have flared sections 202, which are respectively disposed in the two ports 101. This bidirectional port 101 and bidirectional flared section 202 structure design allows the first heat exchange medium to flow into the heat exchange tube 2 from one end port 101 of the shell 1, flow through the entire tube 201 and then flow out from the other end port 101, forming a through flow path, thereby forming a continuous, low-resistance, and efficient straight flow channel, reducing flow resistance and pressure drop, and improving medium flow efficiency and heat exchange uniformity.

[0070] Meanwhile, the flared sections 202 at both ends of the tube body 201 are sealed and connected to the two ports 101 respectively, so that both ends of the heat exchange tube 2 form stable support stress points. This can effectively disperse the stress generated by thermal expansion and contraction of the tube body 201 under high temperature conditions, and prevent the tube body 201 from bending, deforming or even cracking due to excessive force on one side. This further enhances the structural stability and thermal shock resistance of the heat exchange tube 2 after it is assembled with the shell 1.

[0071] Optionally, in the first direction X, the two ports 101 are arranged coaxially.

[0072] In this embodiment, the flared sections 202 at both ends of the tube body 201 are aligned coaxially with the corresponding ports 101, so that the flow path of the first heat exchange medium in the heat exchange tube 2 remains straight and smooth, avoiding additional resistance and eddies caused by misalignment of the ports 101, further improving the flow efficiency of the medium and reducing energy loss.

[0073] Meanwhile, the coaxially arranged ports 101 can keep the supporting and constraining forces on both ends of the tube 201 symmetrical, so that the tube 201 is subjected to more balanced forces during high-temperature thermal expansion and contraction, avoiding problems such as bending and deformation of the tube 201 caused by asymmetrical forces at both ends, and enhancing the stability and fatigue resistance of the assembly structure of the heat exchange tube 2 and the shell 1.

[0074] In some embodiments provided by the present invention, the inner wall of the housing 1 is provided with an annular cavity 102, the annular cavity 102 surrounds the outer side of the heat exchange tube 2, and the housing 1 is provided with an opening 103 communicating with the annular cavity 102, the opening 103 being used for the second heat exchange medium to flow in or out.

[0075] In this embodiment, the inner wall of the shell 1 is provided with an annular cavity 102 surrounding the outside of the heat exchange tube 2, and the shell 1 is provided with an opening 103 communicating with the annular cavity 102 for the inflow and outflow of the second heat exchange medium. The design of the annular cavity 102 enables the second heat exchange medium to be evenly distributed along the circumference of the heat exchange tube 2 after entering the shell 1, so that the second heat exchange medium can contact the outer peripheral walls of multiple heat exchange tubes 2 at the same time, avoiding the situation of poor local medium flow and uneven contact between the heat exchange tube 2 and the medium, thereby improving the overall heat exchange uniformity of the cooler.

[0076] In some embodiments provided by the present invention, the number of annular cavities 102 is set to two, and the two annular cavities 102 are arranged at intervals along the axial direction of the heat exchange tube 2. Each annular cavity 102 is provided with a corresponding opening 103. One of the two openings 103 is used for the inflow of the second heat exchange medium, and the other is used for the outflow of the second heat exchange medium.

[0077] In this embodiment, the inner wall of the shell 1 is provided with two annular cavities 102 arranged axially along the heat exchange tube 2, and each annular cavity 102 is provided with an opening 103. The two openings 103 are used for the inflow and outflow of the second heat exchange medium, respectively. The arrangement of the two annular cavities 102 allows the second heat exchange medium to enter from the opening 103 of one annular cavity 102, flow evenly along the axial direction of the heat exchange tube 2 through the tube body 201 region between adjacent annular cavities 102, and then flow out from the opening 103 of the other annular cavity 102, forming a directional and uniform flow path. This avoids local stagnation or short circuit of the medium in the shell 1, ensuring that the second heat exchange medium achieves full and comprehensive contact with the outer wall of the heat exchange tube 2, thereby improving the overall heat exchange efficiency and heat exchange uniformity of the cooler.

[0078] It is understood that the features in the above embodiments can be combined with each other. For example, in other embodiments provided by the present invention, the cooler includes a housing 1 and a plurality of heat exchange tubes 2.

[0079] The heat exchange tube 2 extends axially along a first direction X, and multiple heat exchange tubes 2 are arranged in an array along a second direction Y intersecting the first direction X. A gap exists between the tube bodies 201 of any two adjacent heat exchange tubes 2 to allow the flow of a second heat exchange medium. Each heat exchange tube 2 includes a tube body 201, a transition section 203, and a flared section 202. The flared section 202 is connected to the tube body 201 via the transition section 203. Along the direction from the tube body 201 to the flared section 202, the cross-sectional area of ​​the transition section 203 gradually increases. The cross-sectional area of ​​the flared section 202 is larger than that of the tube body 201. The flared sections 202 of multiple heat exchange tubes 2 are arranged in an array along the second direction Y and sequentially welded together to form a flared structure 204.

[0080] In the third direction Z, which intersects both the first direction X and the second direction Y, the size of the flared section 202 is the same as that of the tube body 201, and both ends of each flared section 202 are connected to the inner wall of the port 101 of the shell 1. In the second direction Y, the flared sections 202 of the heat exchange tubes 2 at both ends are connected to the inner wall of the port 101 of the shell 1 on their side edges away from the adjacent flared sections 202, and the adjacent flared sections 202 are welded to each other for sealing. The shell 1 is provided with two ports 101 facing opposite sides, and the two ports 101 are coaxially arranged in the second direction Y. Both ends of the tube body 201 are provided with flared sections 202, and the flared sections 202 at both ends are respectively set in the two ports 101. The outer peripheral wall of the flared structure 204 is sealed to the inner peripheral wall of the port 101 of the shell 1.

[0081] The heat exchange tube 2 has multiple stamped protrusions 205 on its tube wall, which are arranged in an array and spaced apart from each other. Each adjacent tube 201 has a protrusion 205 on its side wall where they are close to each other, and the protrusions 205 of adjacent tubes 201 are welded together in a one-to-one correspondence. In the heat exchange tubes 2 arranged along the second direction Y, the heat exchange tube 2 located at the end, away from the tube wall of the adjacent heat exchange tube 2, also has multiple arrayed and spaced protrusions 205, which are welded to the inner wall of the shell 1.

[0082] The inner wall of the shell 1 has two annular cavities 102, which surround the outside of the heat exchange tube 2 and are spaced apart along the axial direction of the heat exchange tube 2. Each annular cavity 102 has a corresponding opening 103, one of which is used for the inflow of the second heat exchange medium, and the other is used for the outflow of the second heat exchange medium. The area between two adjacent annular cavities 102 is connected to the gap between the tube body 201, forming a flow channel for the second heat exchange medium. The first heat exchange medium flows into the heat exchange tube 2 from one end port 101 of the shell 1, flows through the tube body 201, and flows out from the other end port 101, realizing heat exchange with the second heat exchange medium.

[0083] In some embodiments provided by the present invention, the cooler further includes an air inlet chamber 3 and an air outlet chamber 4. The air inlet chamber 3 and the air outlet chamber 4 are respectively connected to ports 101 at both ends of the housing 1.

[0084] In this embodiment, the inlet chamber 3 and the outlet chamber 4 are respectively connected to the ports 101 at both ends of the shell 1. The first heat exchange medium entering can be buffered and stabilized first, and then evenly distributed to the flared sections 202 of each heat exchange tube 2. At the same time, the medium flowing out of each heat exchange tube 2 is collected, rectified and discharged uniformly, avoiding the problem of uneven medium distribution in the multi-heat exchange tube 2 array structure, avoiding the situation that the flow rate of the edge heat exchange tube 2 is large and the flow rate of the middle heat exchange tube 2 is small, ensuring that the heat exchange load of all heat exchange tubes 2 is consistent, and further improving the overall heat exchange uniformity and heat exchange efficiency of the cooler.

[0085] In some embodiments provided by the present invention, the cooler further includes an inlet pipe 5 and an outlet pipe 6. The inlet pipe 5 and the outlet pipe 6 are respectively connected to two openings 103 on the housing 1.

[0086] In this embodiment, the inlet pipe 5 and the outlet pipe 6 are respectively connected to two openings 103 on the shell 1, which can serve as dedicated channels for the second heat exchange medium to enter and exit the cooler, realizing the directional and stable flow of the second heat exchange medium. With the design of the double annular cavity 102 in the shell 1, the second heat exchange medium can smoothly enter the corresponding annular cavity 102 from the inlet pipe 5. After being evenly distributed by the annular cavity 102, it flows along the axial direction of the heat exchange tube 2 through the gap of the tube body 201, and then gathers into another annular cavity 102 and is uniformly discharged through the outlet pipe 6, ensuring the smoothness and uniformity of the flow of the second heat exchange medium.

[0087] This invention also provides a power system in its embodiments.

[0088] Specifically, the power system includes the cooler as described above.

[0089] It should be noted that the power system includes a cooler, and therefore includes all the advantages of the cooler mentioned above, so it will not be elaborated further.

[0090] For example, when used as an Exhaust Gas Recirculation (EGR) cooler, one end port 101 of the cooler is connected to the upstream EGR pipe on the exhaust side of the engine to introduce high-temperature exhaust gas, and the other end port 101 is connected to the downstream EGR pipe on the intake side of the engine to send the cooled exhaust gas into the intake manifold. Simultaneously, one annular cavity 102 opening 103 on the housing 1 is connected to the inlet pipe of the engine coolant circuit, and another annular cavity 102 opening 103 is connected to the outlet pipe of the coolant circuit, guiding the heat-absorbing coolant back to the radiator or cylinder block water jacket, thereby achieving efficient cooling of the EGR exhaust gas and system thermal management.

[0091] This invention also provides a vehicle, including but not limited to vehicles, ships, and aircraft.

[0092] Specifically, the vehicle includes a cooler as described above or a power system as described above.

[0093] It should be noted that the vehicle includes a cooler, and therefore includes all the advantages of the cooler mentioned above, so this will not be elaborated further.

[0094] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A cooler, characterized in that, include: The housing (1) is provided with a port (101) for the first heat exchange medium to flow in or out. Multiple heat exchange tubes (2) are used to contain a first heat exchange medium, and each includes a tube body (201) and a flared section (202). The tube body (201) is disposed inside the shell (1) and has a gap (D) between it and the inner wall of the shell (1) for containing a second heat exchange medium. The flared section (202) is connected to one end of the tube body (201) and is located at the port (101). The cross-sectional area of ​​the flared section (202) is larger than the cross-sectional area of ​​the tube body (201). In the plurality of flared sections (202), the opposing surfaces of adjacent flared sections (202) are connected, and the remaining surfaces are connected to the inner wall of the port (101) so that the port (101) is separated from the gap (D).

2. The cooler according to claim 1, characterized in that, The heat exchange tube (2) further includes a transition section (203), the flared section (202) is connected to the tube body (201) through the transition section (203), and the cross-sectional area of ​​the transition section (203) gradually increases along the direction from the tube body (201) to the flared section (202); And / or, the cross-section of the port (101) is square, and the cross-section of the flared section (202) is square.

3. The cooler according to claim 1, characterized in that, The heat exchange tube (2) extends axially along the first direction (X), and a plurality of heat exchange tubes (2) are arranged in an array along the second direction (Y). The flared sections (202) of the plurality of heat exchange tubes (2) are connected in sequence, and there is a gap between any two adjacent tube bodies (201). The second direction (Y) intersects with the first direction (X).

4. The cooler according to claim 3, characterized in that, In the second direction (Y), the size of the flared section (202) is larger than the size of the tube body (201), and in the third direction (Z), the size of the flared section (202) is equal to the size of the tube body (201). The third direction (Z), the second direction (Y), and the first direction (X) intersect each other.

5. The cooler according to claim 3, characterized in that, Between any two adjacent heat exchange tubes (2), at least one tube body (201) has an outwardly protruding protrusion (205) on its tube wall, and the protrusion (205) is connected to the adjacent tube body (201).

6. The cooler according to claim 3, characterized in that, Along the second direction (Y), among the plurality of heat exchange tubes (2), the heat exchange tube (2) located at the end is provided with an outwardly protruding part (205) away from the tube wall of the adjacent heat exchange tube (2), and the protruding part (205) is connected to the inner wall of the shell (1).

7. The cooler according to any one of claims 1-6, characterized in that, The housing (1) is provided with two ports (101), which are respectively facing opposite sides of the housing (1). Both ends of the tube (201) are provided with flared sections (202), and the flared sections (202) at both ends of the tube (201) are respectively located at the two ports (101).

8. The cooler according to any one of claims 1-6, characterized in that, The inner wall of the shell (1) is provided with an annular cavity (102), which surrounds the outside of the heat exchange tube (2). The shell (1) is provided with an opening (103) communicating with the annular cavity (102), which is used for the second heat exchange medium to flow in or out.

9. A power system, characterized in that, Includes the cooler as described in any one of claims 1-8.

10. A vehicle, characterized in that, Includes the cooler as described in any one of claims 1-8 or the power system as described in claim 9.

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