Micro-channel flat tube, micro-channel heat exchanger, heat management system and vehicle

Abstract

The utility model discloses a microchannel flat tube, microchannel heat exchanger, thermal management system and vehicle wherein the microchannel flat tube comprises a flat tube body, a plurality of diversion microchannels arranged along the first direction are arranged in the flat tube body, each diversion microchannel is provided with an inlet end and an outlet end which are arranged on the opposite end walls of the flat tube body, a flow mixing area is arranged in the flat pipe body and located between the inlet end and the outlet end, and the at least two flow guide micro-channels are communicated through the flow mixing area. According to the micro-channel flat tube disclosed by the embodiment of the utility model, fluids in the at least two flow guide micro-channels can be mixed, so that the temperature of at least part of the fluids in the micro-channel flat tube is uniform, the uniform temperature distribution of the micro-channel flat tube can be ensured to a certain extent, the heat exchange effect of the micro-channel flat tube is favorably improved, and the heat exchange efficiency of the micro-channel flat tube is improved. And the working performance of the micro-channel flat tube is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange, in particular to a microchannel flat tube, a microchannel heat exchanger, a thermal management system and a vehicle. Background Art

[0002] Microchannel heat exchangers are generally composed of microchannel flat tubes, collecting pipes, fins and other structures. They are widely used in thermal management systems due to their advantages such as light weight and small size.

[0003] However, the existing microchannel flat tubes have uneven temperature distribution, which affects the heat exchange effect of the microchannel flat tubes and further reduces the heat exchange performance of the microchannel heat exchanger. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the first purpose of the utility model is to provide a microchannel flat tube, which can mix at least part of the fluid flowing through it, so that the temperature of at least part of the fluid is uniform, and then the temperature distribution of at least part of the microchannel flat tube is uniform, so as to ensure the heat exchange effect of the microchannel flat tube, and solve the technical problem of poor heat exchange effect of the microchannel flat tube in the prior art.

[0005] The second objective of the present utility model is to provide a microchannel heat exchanger having the above-mentioned microchannel flat tubes.

[0006] The third objective of the present utility model is to provide a thermal management system having the above-mentioned microchannel heat exchanger.

[0007] A fourth objective of the present invention is to provide a vehicle having the above-mentioned thermal management system.

[0008] According to the microchannel flat tube of the embodiment of the utility model, it includes: a flat tube body, in which a plurality of flow-guiding microchannels arranged along a first direction are arranged, each of the flow-guiding microchannels has an inlet end and an outlet end arranged on opposite end walls of the flat tube body; a mixing flow area is provided in the flat tube body, the mixing flow area is located between the inlet end and the outlet end, and at least two of the flow-guiding microchannels are connected through the mixing flow area.

[0009] According to the microchannel flat tube of the embodiment of the utility model, a mixing flow area is set between the inlet end and the outlet end of the guide microchannel, and at least two guide microchannels are set to be connected through the mixing flow area, so that the fluids in the at least two guide microchannels can be mixed through the mixing flow area, so that the temperature of at least part of the fluid in the microchannel flat tube is uniform, which can ensure the uniform temperature distribution of the microchannel flat tube to a certain extent, which is beneficial to improving the heat exchange effect of the microchannel flat tube, thereby ensuring the working performance of the microchannel flat tube.

[0010] In some embodiments, the flow mixing area includes a plurality of first flow mixing channels, the extension direction of each of the first flow mixing channels is arranged at an angle with the flow guiding microchannel, and each first flow mixing channel is connected to at least two of the flow guiding microchannels.

[0011] In some embodiments, the mixing area further includes a plurality of second mixing channels, the extension directions of the plurality of second mixing channels are respectively arranged at an angle with the guide microchannel and the first mixing channel, and each of the second mixing channels is connected to at least two of the guide microchannels.

[0012] In some embodiments, the flow mixing region includes a plurality of sub-regions, and each of the sub-regions includes the first flow mixing channel and the second flow mixing channel that are cross-arranged.

[0013] In some embodiments, the plurality of sub-regions are arranged in the first direction, and adjacent sub-regions are connected to the same flow guiding microchannel.

[0014] In some embodiments, the mixed flow area further includes a connecting flow channel, and the connecting flow channel is connected to the plurality of sub-areas respectively.

[0015] In some embodiments, the communication channel is connected to an intersection of each of the sub-regions.

[0016] In some embodiments, each of the sub-regions corresponds to and is connected to at least three of the flow guide microchannels, the two ends of each of the first mixed flow channels are respectively connected to two of the flow guide microchannels, the two ends of each of the second mixed flow channels are respectively connected to two of the flow guide microchannels, and the intersection of each of the sub-regions is connected to one of the flow guide microchannels.

[0017] In some embodiments, at least two of the sub-regions are correspondingly arranged in each of the flow guiding microchannels.

[0018] In some embodiments, in the direction from the inlet end to the outlet end, the plurality of mixing regions are arranged at intervals, and the plurality of mixing regions include a first mixing region and a second mixing region, the first mixing region includes a plurality of the first mixing channels, and the second mixing region includes a plurality of the second mixing channels.

[0019] In some embodiments, the first flow mixing region and the second flow mixing region are centrally symmetrically arranged.

[0020] In some embodiments, in the direction from the inlet end to the outlet end, a plurality of the mixing flow areas are provided in the flat tube body at intervals.

[0021] In some embodiments, the number of the mixed flow regions located at the ends of the flat tube body is greater than the number of the mixed flow regions located in the middle of the flat tube body.

[0022] In some embodiments, the flat tube body includes a first cover plate and a second cover plate covering each other, the first cover plate is provided with a first through groove opening toward the second cover plate, the second cover plate is provided with a second through groove opening toward the first cover plate, and the second through groove and the first through groove cooperate to form the flow guide microchannel and the mixing area.

[0023] The microchannel heat exchanger according to the embodiment of the utility model comprises: a microchannel flat tube, wherein the microchannel flat tube is the aforementioned microchannel flat tube; and a fin, wherein the fin is arranged on the microchannel flat tube.

[0024] According to the microchannel heat exchanger of the embodiment of the utility model, by adopting the aforementioned microchannel flat tubes, the heat exchange performance of the microchannel heat exchanger can be improved, thereby ensuring the heat exchange effect of the microchannel heat exchanger.

[0025] The thermal management system according to the embodiment of the utility model includes the aforementioned microchannel heat exchanger.

[0026] According to the thermal management system of the embodiment of the utility model, by adopting the aforementioned microchannel heat exchanger, the heat exchange effect of the thermal management system can be effectively improved, thereby ensuring the working performance of the thermal management system.

[0027] A vehicle according to an embodiment of the present utility model includes the aforementioned thermal management system.

[0028] The vehicle according to the embodiment of the present utility model can improve the comfort of the vehicle and thus improve the driving experience by adopting the above-mentioned thermal management system.

[0029] Additional aspects and advantages of the present invention will become apparent from the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0031] Figure 1 It is a schematic diagram of the structure of the microchannel flat tube of some embodiments of the utility model.

[0032] Figure 2 It is a schematic structural diagram of a microchannel flat tube in some embodiments of the first aspect of the utility model.

[0033] Figure 3 It is a schematic structural diagram of a microchannel flat tube in some embodiments of the second aspect of the utility model.

[0034] Figure 4 It is a schematic structural diagram of a microchannel flat tube in some embodiments of the third aspect of the utility model.

[0035] Figure 5 It is a top view of the microchannel flat tube of some embodiments of the third aspect of the utility model.

[0036] Figure 6 It is a schematic structural diagram of a microchannel flat tube in some embodiments of the fourth aspect of the utility model.

[0037] Figure 7 It is a top view of the microchannel flat tube of some embodiments of the fourth aspect of the utility model.

[0038] Figure 8 This is a schematic structural diagram of a microchannel flat tube in some embodiments of the fifth aspect of the utility model.

[0039] Fig. 9 Exploded diagram of microchannel flat tubes of some embodiments of the first aspect of the utility model.

[0040] Reference numerals:

[0041] 1000, microchannel flat tube;

[0042] 100. Flat tube body;

[0043] 110. Flow diversion microchannel;

[0044] 111, inlet end; 112, outlet end;

[0045] 120. Mixed flow area;

[0046] 121. a first mixed flow channel;

[0047] 122. a second mixed flow channel;

[0048] 123, sub-region;

[0049] 124, connecting flow channel;

[0050] 125. The first mixed flow area;

[0051] 126. Second mixed flow area;

[0052] 130. first cover plate; 131. first through groove;

[0053] 140. A second cover plate; 141. A second through groove. DETAILED DESCRIPTION

[0054] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0055] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0056] It should be noted that the microchannel flat tube 1000 of the present application is suitable for a microchannel heat exchanger with the microchannel flat tube 1000 as the main body, and the microchannel heat exchanger is suitable for heat exchange between high-pressure fluids or between high-pressure fluids and other low-pressure fluids.

[0057] In some embodiments, the microchannel flat tube 1000 is generally made of aluminum and formed into a pipe including a plurality of flow-guiding microchannels 110. Since the microchannel flat tube 1000 is flat and long in shape, it is generally called a flat tube, and the equivalent hydraulic diameter of the flow-guiding microchannel 110 is generally less than 1 mm, that is, smaller than the general pipe diameter, and therefore is called a microchannel.

[0058] Among them, the smaller the diameter of the equivalent hydraulic force, the stronger its pressure resistance.

[0059] The microchannel flat tube 1000 of an embodiment of the utility model is described below with reference to the accompanying drawings.

[0060] Combination Figure 1-Figure 9 As shown, the microchannel flat tube 1000 according to the embodiment of the utility model includes: a flat tube body 100.

[0061] Among them, combined Figure 1-Figure 8 As shown, a plurality of flow guiding microchannels 110 are disposed in the flat tube body 100 . The plurality of flow guiding microchannels 110 are arranged along a first direction. Each flow guiding microchannel 110 has an inlet end 111 and an outlet end 112 disposed on opposite end walls of the flat tube body 100 .

[0062] It should be noted that the first direction mentioned above can be understood as Figure 1 and Figure 2In the X direction shown in FIG. 1 , that is, the plurality of flow guiding microchannels 110 are arranged along Figure 1 and Figure 2 The flat tube body 100 is arranged in the X direction as shown in the figure, and each guide microchannel 110 has an inlet end 111 and an outlet end 112, and the inlet end 111 and the outlet end 112 are arranged on the opposite end walls of the flat tube body 100. In this way, the inlet end 111 and the outlet end 112 cooperate to enable the guide microchannel 110 to be connected with the outside of the flat tube body 100, thereby ensuring that the fluid outside the flat tube body 100 can flow into the guide microchannel 110 of the flat tube body 100, and the fluid entering the guide microchannel 110 of the flat tube body 100 can also flow out smoothly, thereby realizing the flow of the fluid in the flat tube body 100 and ensuring the working performance of the flat tube body 100.

[0063] In some embodiments, the fluid mentioned above may be a refrigerant. The refrigerant flows into the flow guiding microchannel 110 and flows along the extension direction of the flow guiding microchannel 110 to exchange heat with the medium on the periphery of the flat tube body 100 to achieve the purpose of adjusting the temperature of the medium on the periphery of the flat tube body 100.

[0064] In some embodiments, Figure 2 As shown, the plurality of flow guiding microchannels 110 extend along the second direction, the flat tube body 100 has two end walls arranged opposite to each other in the second direction, the inlet end 111 and the outlet end 112 are arranged on the two end walls respectively, and the second direction intersects with the first direction. When the flat tube body 100 is working, the external fluid can continuously flow into the flow guiding microchannels 110 of the flat tube body 100, thereby ensuring the working performance of the flat tube body 100.

[0065] The second direction mentioned here can be understood as Figure 2 The Y direction shown in .

[0066] It should be noted that, in the description of the present utility model, unless otherwise specified, "plurality" means two or more than two. In the present application, there is no specific limitation on the number of flow-guiding microchannels 110, and those skilled in the art can adjust the number of flow-guiding microchannels 110 according to actual needs.

[0067] Combination Figure 2-Figure 8As shown, a mixing region 120 is provided in the flat tube body 100, and the mixing region 120 is located between the inlet end 111 and the outlet end 112, and at least two flow guiding microchannels 110 are connected through the mixing region 120. In this way, the fluids in the at least two flow guiding microchannels 110 can be mixed through the mixing region 120, thereby making the temperature of at least part of the fluid in the flat tube body 100 uniform, ensuring the uniformity of the fluid temperature, thereby making the temperature distribution of the microchannel flat tube 1000 in the heat exchange process uniform to a certain extent, which is conducive to improving the heat exchange effect of the microchannel flat tube 1000, and thus ensuring the heat exchange performance of the microchannel flat tube 1000.

[0068] It should be noted that the present application sets the mixed flow area 120 to be located between the inlet end 111 and the outlet end 112, so that the mixed fluid can be discharged through at least two guide microchannels 110 respectively. In this way, the purpose of diverting the mixed fluid can be achieved, so that the fluid with uniform temperature is evenly distributed, and the heat exchange effect of the microchannel flat tube 1000 is further improved.

[0069] As can be seen from the above structure, the microchannel flat tube 1000 of the embodiment of the utility model can achieve mixing of the fluids in at least two flow-guiding microchannels 110 by setting a plurality of flow-guiding microchannels 110 arranged along the first direction, and setting at least two flow-guiding microchannels 110 to be connected through the flow-mixing region 120, thereby making the temperature of at least part of the fluid in the flat tube body 100 uniform, which can also improve the heat exchange effect of the microchannel flat tube 1000 to a certain extent, and ensure the heat exchange performance of the microchannel flat tube 1000.

[0070] At the same time, by arranging the plurality of guide microchannels 110 along the first direction, the space of the flat tube body 100 is rationally utilized, ensuring that the plurality of guide microchannels 110 can be simultaneously arranged on the flat tube body 100. In this way, a large amount of fluid can be introduced into the flat tube body 100 through the plurality of guide microchannels 110 to further ensure the heat exchange performance of the flat tube body 100.

[0071] In other words, the microchannel flat tube 1000 of the present application can solve the technical problem of uneven temperature distribution of the fluid in the flow-guiding microchannel 110, which in turn leads to poor overall heat exchange effect of the microchannel flat tube 1000.

[0072] It can be understood that, compared with the prior art, the present application sets a mixing area 120 between the inlet end 111 and the outlet end 112, and connects at least two flow-guiding microchannels 110 through the mixing area 120 to achieve mixing of the fluids in at least two flow-guiding microchannels 110, so that the temperature of at least part of the fluid in the microchannel flat tube 1000 is uniform, and then the temperature distribution of at least part of the microchannel flat tube 1000 is uniform, which is beneficial to improving the heat exchange effect of the microchannel flat tube 1000.

[0073] It should also be noted that the cross-sectional shape of the flow guiding microchannel 110 can be circular, elliptical, triangular or rectangular, etc., and the present application does not impose any specific limitation.

[0074] In some embodiments, in combination Figure 2-Figure 7 As shown, the flow mixing area 120 includes a plurality of first flow mixing channels 121, and the extension direction of each first flow mixing channel 121 is arranged at an angle with the flow guiding microchannel 110, and each first flow mixing channel 121 is connected with at least two flow guiding microchannels 110. In other words, the extension direction of the first flow mixing channel 121 is different from the extension direction of the flow guiding microchannel 110, which facilitates the connection between the first flow mixing channel 121 and the flow guiding microchannel 110, so that the fluids in at least two flow guiding microchannels 110 can be mixed through the first flow mixing channel 121 to ensure the uniformity of the fluid temperature and improve the heat exchange effect of the microchannel flat tube 1000.

[0075] It should be noted that by configuring the mixing region 120 to include a plurality of first mixing channels 121 and utilizing the first mixing channels 121 to mix the fluid, the volume of the mixing chamber can be reduced compared to mixing the fluid through a mixing chamber, thereby ensuring the mixing effect, so that at least part of the structure of the microchannel flat tube 1000 has a uniform temperature distribution during the heat exchange process, which is beneficial to improving the heat exchange effect of the microchannel flat tube 1000, thereby ensuring the working performance of the microchannel flat tube 1000.

[0076] In some embodiments, in combination Figure 2-Figure 7 As shown, the first mixing channel 121 extends obliquely relative to the second direction. Since the multiple flow guiding microchannels 110 arranged along the first direction all extend along the second direction, the extension direction of the first mixing channel 121 and the flow guiding microchannel 110 are set at an angle, so that the first mixing channel 121 can be connected with at least two flow guiding microchannels 110, so as to mix the fluids in at least two flow guiding microchannels 110, ensure the uniformity of the fluid temperature, and improve the heat exchange effect of the microchannel flat tube 1000.

[0077] At the same time, by setting the extension direction of each first mixing channel 121 to be at an angle with the guide microchannel 110, the difficulty of connecting the first mixing channel 121 with at least two guide microchannels 110 can be reduced, thereby reducing the difficulty of forming the flat tube body 100 and improving production efficiency.

[0078] In some embodiments, in combination Figure 2-Figure 7As shown, the first mixing channel 121 extends obliquely relative to the first direction, that is, the first mixing channel 121 extends obliquely relative to the first direction and the second direction at the same time, so that the first mixing channel 121 can be obliquely extended relative to the flow guiding microchannel 110, while ensuring that the extension direction of the first mixing channel 121 and the flow guiding microchannel 110 can be set at an angle, and the fluid in the flow guiding microchannel 110 can flow smoothly into the first mixing channel 121 for mixing, thereby reducing the difficulty of mixing.

[0079] In some embodiments, in combination Figure 2-Figure 7 As shown, the mixing area 120 also includes a plurality of second mixing channels 122 , the extension directions of which are respectively arranged at an angle with the guide microchannel 110 and the first mixing channel 121 , and each second mixing channel 122 is connected to at least two guide microchannels 110 . That is to say, the extension direction of the second mixing flow channel 122 is different from the extension direction of the guide microchannel 110 and the extension direction of the first mixing flow channel 121. In this way, while facilitating the connection between the second mixing flow channel 122 and the guide microchannel 110, multiple first mixing flow channels 121 and multiple second mixing flow channels 122 can be simultaneously arranged in the mixing area 120. Because each second mixing flow channel 122 is connected to at least two guide microchannels 110, it is possible to mix the fluid by using multiple first mixing flow channels 121 and multiple second mixing flow channels 122 respectively, thereby ensuring the mixing effect, and then ensuring the uniformity of the fluid temperature, thereby improving the heat exchange effect of the microchannel flat tube 1000.

[0080] In some embodiments, in combination Figure 2-Figure 7 As shown, the second mixing channel 122 extends obliquely relative to the second direction and the extension direction of the second mixing channel 122 is opposite to the extension direction of the first mixing channel 121. Since the multiple flow guiding microchannels 110 arranged along the first direction all extend along the second direction, the extension direction of the second mixing channel 122 can be set at an angle to the flow guiding microchannel 110 and the first mixing channel 121 respectively, so that the second mixing channel 122 can be connected to at least two flow guiding microchannels 110, and multiple first mixing channels 121 and multiple second mixing channels 122 can be set simultaneously in the mixing area 120 to ensure the mixing effect.

[0081] At the same time, by setting the extension direction of each second mixing channel 122 to be at an angle with the guide microchannel 110, the difficulty of connecting the second mixing channel 122 with at least two guide microchannels 110 can be reduced, thereby reducing the difficulty of forming the flat tube body 100 and improving production efficiency.

[0082] In addition, since the first mixing channel 121 extends obliquely relative to the flow guiding microchannel 110, by setting the extension direction of the second mixing channel 122 to be opposite to the extension direction of the first mixing channel 121, the second mixing channel 122 can also extend obliquely relative to the flow guiding microchannel 110, thereby allowing the fluid in the flow guiding microchannel 110 to flow smoothly into the second mixing channel 122 for mixing, thereby reducing the difficulty of mixing.

[0083] In the description of the present utility model, features defined as “first” or “second” may explicitly or implicitly include one or more such features, and are used to distinguish and describe the features, without any distinction in order or importance.

[0084] In some embodiments, in combination Figure 2-Figure 5 As shown, the flow mixing area 120 includes a plurality of sub-areas 123, and each sub-area 123 includes a first flow mixing channel 121 and a second flow mixing channel 122 arranged crosswise. In this way, the first flow mixing channel 121 and the second flow mixing channel 122 can be used to mix the fluids in at least two flow guiding microchannels 110 in each sub-area 123 at the same time, so as to ensure the mixing effect and further ensure the uniformity of the fluid temperature.

[0085] In addition, through the above-mentioned arrangement, the fluid mixed by the first mixing channel 121 and the second mixing channel 122 can be diverted to different flow guiding microchannels 110 through the first mixing channel 121 and the second mixing channel 122, so that the fluid with uniform temperature can be distributed in different flow guiding microchannels 110, ensuring that at least part of the temperature of the microchannel flat tube 1000 is uniform, thereby improving the heat exchange effect of the microchannel flat tube 1000.

[0086] At the same time, by providing a plurality of sub-regions 123 , the temperatures at multiple locations of the microchannel flat tube 1000 can be made uniform, thereby improving the heat exchange effect of the microchannel flat tube 1000 .

[0087] In a specific example, through the above settings, such as Figure 2 As shown, after the fluid enters the flat tube body 100 through the inlet end 111 of the flow guiding microchannel 110, the fluid first enters the flow guiding microchannel 110 and flows toward the sub-region 123, and the fluids in the two adjacent flow guiding microchannels 110 flow toward the same sub-region 123 through the first mixing channel 121 and the second mixing channel 122 at the same time to achieve mixing in the sub-region 123, and the mixed fluids then flow out through the first mixing channel 121 and the second mixing channel 122 respectively and flow into the two adjacent flow guiding microchannels 110 to achieve fluid diversion, so that the fluid with uniform temperature can be distributed in different flow guiding microchannels 110, ensuring that at least part of the temperature of the microchannel flat tube 1000 is uniform, and improving the heat exchange effect of the microchannel flat tube 1000.

[0088] It should be noted that the intersection point of the first mixing channel 121 and the second mixing channel 122 after they are crossed, the connection point between the first mixing channel 121 and the flow guiding microchannel 110, and the connection point between the second mixing channel 122 and the flow guiding microchannel 110 may not be a single point in structure, and may be expanded into a circular area or an area of ​​other shapes that is larger than the diameter of the flow guiding microchannel 110.

[0089] In some embodiments, in combination Figure 2-Figure 5 As shown, a plurality of sub-regions 123 are arranged in a first direction, and adjacent sub-regions 123 are connected to the same flow guiding microchannel 110. In this way, the fluid in the flow guiding microchannel 110 connected to the adjacent sub-regions 123 can be diverted to different sub-regions 123, and the diverted fluid is mixed with the fluid in the different flow guiding microchannel 110 in the sub-region 123, and after mixing, it can be diverted again through the sub-region 123 to be diverted to different flow guiding microchannels 110, so as to ensure the fluid mixing effect and further ensure the uniformity of the fluid temperature distribution.

[0090] In a specific example, through the above settings, such as Figure 2 As shown, after the fluid enters the flat tube body 100 through the inlet end 111 of the flow guiding microchannel 110, the fluid first enters the flow guiding microchannel 110 and flows toward the flow mixing area 120, so that the fluid flows to the sub-area 123, wherein the fluid in the flow guiding microchannel 110 connected to the adjacent sub-area 123 will flow to different sub-areas 123 respectively to achieve diversion, and when the fluid flows to the intersection of the first flow mixing channel 121 and the second flow mixing channel 122, the fluid can be mixed with the fluid in other flow guiding microchannels 110, and then the fluid flowing out of the sub-area 123 is diverted to two adjacent flow guiding microchannels 110 through the first flow mixing channel 121 and the second flow mixing channel 122, and at the same time, part of the fluid flowing out of different sub-areas 123 can also flow into the same flow guiding microchannel 110 at the same time, and finally the fluid in the flow guiding microchannel 110 is discharged through the outlet end 112 of the flow guiding microchannel 110.

[0091] In the process of fluid flow, the fluid can exchange heat with the external medium to achieve the purpose of adjusting the temperature of the medium around the flat tube body 100.

[0092] In summary, in the above process, the fluids in at least two adjacent flow guiding microchannels 110 can be mixed, thereby improving the technical problem that the fluids in the flow guiding microchannels 110 are independent of each other and have uneven temperature distribution.

[0093] In some embodiments, Figure 3As shown, the mixed flow area 120 also includes a connecting flow channel 124, and the connecting flow channel 124 is respectively connected to the multiple sub-areas 123. In this way, the fluids in the multiple sub-areas 123 can be mixed through the connecting flow channel 124 to further improve the mixing effect of the fluids, improve the uniformity of the fluid temperature distribution, and ensure the heat exchange effect of the microchannel flat tube 1000.

[0094] In some embodiments, Figure 3 As shown, the connecting flow channel 124 extends along the first direction. Since the multiple sub-areas 123 are arranged in the first direction, the connecting flow channel 124 can be respectively connected with the multiple sub-areas 123 by setting the connecting flow channel 124 to extend along the first direction, so as to reduce the difficulty of connecting the connecting flow channel 124 with the multiple sub-areas 123, thereby ensuring the mixing effect of the fluid.

[0095] In some embodiments, Figure 3 As shown, the connecting flow channel 124 is connected to the intersection of each sub-area 123. In this way, the fluids in the first mixing channel 121 and the second mixing channel 122 of each sub-area 123 can be mixed, and then the fluids in multiple sub-areas 123 can be mixed through the connecting flow channel 124, so as to further improve the mixing effect and thus improve the uniformity of the fluid temperature.

[0096] In a specific example, Figure 3 As shown, the fluids in the multiple sub-regions 123 are mixed through the connecting flow channel 124 and then flow into different flow-guiding microchannels 110 for heat exchange, so as to improve the temperature uniformity of the microchannel flat tube 1000 .

[0097] It should be noted that the cross-sectional shapes of the first mixing channel 121 , the second mixing channel 122 and the connecting channel 124 may be circular, elliptical, triangular or rectangular, etc., and the present application does not impose any specific limitation thereto.

[0098] In some embodiments, in combination Figure 4 and Figure 5 As shown, each sub-region 123 is connected to at least three flow guiding micro-channels 110, the two ends of each first flow mixing channel 121 are respectively connected to two flow guiding micro-channels 110, the two ends of each second flow mixing channel 122 are respectively connected to two flow guiding micro-channels 110, and the intersection of each sub-region 123 is connected to one flow guiding micro-channel 110. Thus, each sub-region 123 can mix the fluids in at least three adjacent flow guiding micro-channels 110, so as to effectively reduce the pressure loss and ensure the mixing effect of the fluids.

[0099] In a specific example, the intersection of each sub-area 123 can be flexibly designed as needed to obtain an ideal heat exchange effect.

[0100] In some embodiments, in combination Figure 4 and Figure 5 As shown, the first mixing channel 121 and the second mixing channel 122 in each sub-region 123 cooperate to form an "X"-shaped structure, which is used to connect three adjacent guide microchannels 110, and introduce the fluids in the three guide microchannels 110 into the middle guide microchannel 110 for mixing, and then divert them to the three guide microchannels 110 after mixing, so as to achieve the purpose of mixing the fluids and then diverting them, so as to improve the uniformity of temperature.

[0101] In some embodiments, in combination Figure 4 and Figure 5 As shown, each flow guiding microchannel 110 is provided with at least two sub-regions 123. In this way, the fluid in each flow guiding microchannel 110 can be mixed through at least two sub-regions 123, thereby ensuring the fluid mixing effect and further ensuring the uniformity of the fluid temperature distribution.

[0102] In some embodiments, in combination Figure 6 and Figure 7 As shown, in the direction from the inlet end 111 to the outlet end 112, there are multiple flow mixing areas 120 arranged at intervals, and the multiple flow mixing areas 120 include a first flow mixing area 125 and a second flow mixing area 126. The first flow mixing area 125 includes multiple first flow mixing channels 121, and the second flow mixing area 126 includes multiple second flow mixing channels 122. It can also be understood that the flat tube body 100 is provided with a first flow mixing area 125 and a second flow mixing area 126, and the first flow mixing area 125 and the second flow mixing area 126 are arranged at intervals in the second direction, and the first flow mixing area 125 includes multiple first flow mixing channels 121, and the second flow mixing area 126 includes multiple second flow mixing channels 122. Because the extension direction of the second flow mixing channel 122 is set at an angle with the first flow mixing channel 121, the extension directions of the flow mixing channels in the multiple flow mixing areas 120 can be different, so that the fluid can flow and mix in different directions during the flow process, effectively improving the uniformity of the fluid temperature.

[0103] At the same time, the cooperation of the plurality of first mixing channels 121 and the plurality of second mixing channels 122 can also enable the fluid to be mixed periodically, thereby effectively improving the uniformity of the fluid temperature.

[0104] In some embodiments, in combination Figure 6 and Figure 7As shown, in the second direction, the extension lengths of the plurality of first mixing channels 121 increase successively, so that the number of the flow guiding microchannels 110 connected to the plurality of first mixing channels 121 increases successively; correspondingly, in the second direction, the extension lengths of the plurality of second mixing channels 122 increase successively, so that the number of the flow guiding microchannels 110 connected to the plurality of second mixing channels 122 increases successively, so as to ensure the fluid mixing effect and thereby improve the uniformity of the fluid temperature.

[0105] Optionally, combined Figure 6 and Figure 7 As shown, one of the first mixing channels 121 is connected to all the flow guiding microchannels 110, and one of the second mixing channels 122 is connected to all the flow guiding microchannels 110, so that the fluids in all the flow guiding microchannels 110 in the first mixing area 125 and the second mixing area 126 can be mixed to ensure the mixing effect, thereby ensuring the uniformity of the fluid temperature at each position in the flat tube body 100, that is, ensuring the uniformity of the temperature of the flat tube body 100, and improving the heat exchange effect of the flat tube body 100.

[0106] In summary, through the above-mentioned settings, in the structure of the microchannel flat tube 1000, the fluid not only flows along the extension direction of the flow guide microchannel 110, but also flows along the extension directions of the first mixing channel 121 and the second mixing channel 122 respectively. From the macroscopic perspective of the microchannel flat tube 1000, the fluid can flow and mix periodically in different directions, thereby improving the temperature uniformity of the fluid in the microchannel flat tube 1000, thereby making the overall temperature of the microchannel flat tube 1000 uniform.

[0107] It should be noted that, in the above structure, in order to reduce the resistance to fluid flow, it is possible to consider reducing the angle between the first mixing channel 121 and the second mixing channel 122 and the flow guide microchannel 110, increasing the distance between adjacent first mixing channels 121, increasing the distance between adjacent second mixing channels 122, increasing the cross-sectional area of ​​the first mixing channel 121 and / or increasing the cross-sectional area of ​​the second mixing channel 122, etc.

[0108] In some embodiments, Figure 6 and Figure 7 As shown, the first flow mixing area 125 and the second flow mixing area 126 are centrally symmetrically arranged. This ensures that the first flow mixing channel 121 in the first flow mixing area 125 and the second flow mixing channel 122 in the second flow mixing area 126 extend in different directions, thereby enabling the fluid to flow and mix periodically in different directions in the microchannel flat tube 1000, thereby improving the temperature uniformity of the fluid in the microchannel flat tube 1000.

[0109] It should be noted that Figure 6 and Figure 7In the figures, a first mixing region 125 and a second mixing region 126 are provided in the direction from the inlet end 111 to the outlet end 112 as an example. In some embodiments, when the length of the microchannel flat tube 1000 in the second direction is longer, the number of the first mixing region 125 and the second mixing region 126 can be increased, and the first mixing region 125 and the second mixing region 126 can be alternately provided, so that the fluid in the microchannel flat tube 1000 can flow and mix periodically in different directions, thereby improving the temperature uniformity of the fluid in the microchannel flat tube 1000.

[0110] It should also be noted that, the first mixing region 125 described above includes multiple first mixing channels 121, and the second mixing region 126 includes multiple second mixing channels 122. Of course, in some other embodiments, the first mixing region 125 can be configured to include multiple second mixing channels 122, and the second mixing region 126 can be configured to include multiple first mixing channels 121. In this way, the extension directions of the mixing channels in the multiple mixing regions 120 can be different, thereby allowing the fluid to be periodically mixed in the microchannel flat tube 1000, effectively improving the uniformity of the fluid temperature.

[0111] In some embodiments, Figure 8 As shown, in the direction from the inlet end 111 to the outlet end 112, a plurality of spaced mixing areas 120 are provided in the flat tube body 100. It can also be understood here that in the second direction, a plurality of spaced mixing areas 120 are provided in the flat tube body 100, and the cooperation of the plurality of mixing areas 120 can further ensure the mixing effect of the fluid, thereby improving the uniformity of the fluid temperature, and is conducive to improving the overall temperature uniformity of the microchannel flat tube 1000, so as to improve the heat exchange effect of the microchannel flat tube 1000 and ensure the working performance of the microchannel flat tube 1000.

[0112] At the same time, by arranging the multiple mixed flow areas 120 at intervals, it is also possible to avoid a high total pressure loss to a certain extent, so as to ensure the heat exchange effect of the fluid and further ensure the working performance of the microchannel flat tube 1000.

[0113] In some embodiments, the number of the mixed flow areas 120 located at the ends of the flat tube body 100 is greater than the number of the mixed flow areas 120 located in the middle of the flat tube body 100. This ensures the uniformity of the temperature of the fluid flowing into the flat tube body 100 and the fluid about to flow out of the flat tube body 100, thereby ensuring the uniformity of the temperature of the microchannel flat tube 1000 and improving the heat exchange effect of the microchannel flat tube 1000.

[0114] Alternatively, if Figure 4 and Figure 5As shown, the number of sub-regions 123 located at the ends of the flat tube body 100 is greater than the number of sub-regions 123 located in the middle of the flat tube body 100, so as to effectively ensure that the overall temperature of the microchannel flat tube 1000 is uniform.

[0115] In some embodiments, Figure 4 and Figure 5 As shown, the sub-region 123 located at the end of the flat tube body 100 is arranged at the edge region of the flat tube body 100 in the first direction, and the sub-region 123 located in the middle of the flat tube body 100 is arranged at the middle region of the flat tube body 100 in the first direction. In this way, when the fluid flows from the inlet end 111 toward the outlet end 112 of the guide microchannel 110, part of the fluid can gradually flow toward the middle region of the flat tube body 100 in the first direction, and then flow toward the edge region of the flat tube body 100 in the first direction, so that the fluid can be fully mixed to ensure the mixing effect, thereby ensuring the uniformity of the temperature of the microchannel flat tube 1000 and improving the heat exchange effect of the microchannel flat tube 1000.

[0116] In some embodiments, Fig. 9 As shown, the flat tube body 100 includes a first cover plate 130 and a second cover plate 140 that cover each other, the first cover plate 130 is provided with a first through slot 131 that opens toward the second cover plate 140, the second cover plate 140 is provided with a second through slot 141 that opens toward the first cover plate 130, and the second through slot 141 and the first through slot 131 cooperate to form the flow guiding microchannel 110 and the flow mixing area 120. In this way, the molding difficulty of the flow guiding microchannel 110 and the flow mixing area 120 can be reduced, thereby reducing the molding difficulty of the flat tube body 100 and improving the production efficiency of the microchannel flat tube 1000.

[0117] In a specific example, the flat tube body 100 can be manufactured separately according to the first cover plate 130 and the second cover plate 140 by forging or casting, and then the first cover plate 130 and the second cover plate 140 are connected together by brazing or other forms to form the flat tube body 100, thereby reducing the difficulty of forming the flat tube body 100.

[0118] Of course, the above-mentioned processing method of the flat tube body 100 is only one implementation method, and is not the only method.

[0119] The microchannel heat exchanger of the embodiment of the utility model is described below.

[0120] A microchannel heat exchanger according to an embodiment of the utility model includes: microchannel flat tubes 1000 and fins.

[0121] The microchannel flat tube 1000 is the aforementioned microchannel flat tube 1000 , and the specific structure of the microchannel flat tube 1000 is not described in detail herein. The fins are arranged on the microchannel flat tube 1000 .

[0122] It can be seen from the above structure that the microchannel heat exchanger of the embodiment of the utility model can improve the heat exchange performance of the microchannel heat exchanger by adopting the aforementioned microchannel flat tube 1000, thereby ensuring the heat exchange effect of the microchannel heat exchanger.

[0123] It should be noted that by providing fins on the microchannel flat tubes 1000, the fins can be used for heat transfer, thereby improving the heat exchange quality of the microchannel flat tubes 1000, and ensuring the heat exchange effect of the microchannel heat exchanger to a certain extent.

[0124] In some embodiments, the fins are plugged into the microchannel flat tubes 1000, so that while the fins are arranged on the microchannel flat tubes 1000, the difficulty of assembling the fins and the microchannel flat tubes 1000 can be reduced, thereby improving the assembly efficiency of the microchannel heat exchanger.

[0125] In some embodiments, the microchannel heat exchanger also includes a manifold, which is connected to the end of the microchannel flat tube 1000 to facilitate the transportation of fluid toward the microchannel flat tube 1000 through the manifold and to receive the fluid discharged from the microchannel flat tube 1000, thereby ensuring the heat exchange performance of the microchannel flat tube 1000.

[0126] The thermal management system of the embodiment of the present utility model is described below.

[0127] A thermal management system according to an embodiment of the utility model includes: a microchannel heat exchanger.

[0128] The microchannel heat exchanger is the aforementioned microchannel heat exchanger, and the specific structure of the microchannel heat exchanger is not described in detail here.

[0129] It can be seen from the above structure that the thermal management system of the embodiment of the utility model can effectively improve the heat exchange effect of the thermal management system by adopting the aforementioned microchannel heat exchanger, thereby ensuring the working performance of the thermal management system.

[0130] The following describes a vehicle according to an embodiment of the present utility model.

[0131] A vehicle according to an embodiment of the utility model includes: a thermal management system.

[0132] Among them, the thermal management system is the aforementioned thermal management system, and the specific structure of the thermal management system will not be described here.

[0133] It can be seen from the above structure that the vehicle of the embodiment of the utility model can improve the comfort of the vehicle and thus improve the driving experience by adopting the above-mentioned thermal management system.

[0134] It should be noted that the vehicle mentioned here can be a gasoline vehicle, a diesel vehicle, a pure electric vehicle or a hybrid vehicle, etc.

[0135] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0136] Figure 4 and Figure 5 It is shown that each sub-region 123 corresponds to three flow-guiding microchannels 110 for illustrative purposes. However, after reading the above technical solution, ordinary technicians can obviously understand that the solution can be applied to the technical solution of four, five or more flow-guiding microchannels 110, which also falls within the protection scope of the present utility model.

[0137] The heat exchange principles of the microchannel flat tube 1000, microchannel heat exchanger, thermal management system and other components of the vehicle such as the flat tube body 100 and fins according to the embodiment of the utility model are well known to ordinary technicians in the field and will not be described in detail here.

[0138] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0139] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A microchannel flat tube, characterized in that: include: A flat tube body, wherein a plurality of flow guiding micro channels arranged along a first direction are disposed in the flat tube body, and each of the flow guiding micro channels has an inlet end and an outlet end disposed on opposite end walls of the flat tube body; A mixed flow area is provided in the flat tube body, and the mixed flow area is located between the inlet end and the outlet end, and at least two of the flow guiding microchannels are connected through the mixed flow area.

2. The microchannel flat tube according to claim 1, characterized in that: The flow mixing area includes a plurality of first flow mixing channels, the extension direction of each of the first flow mixing channels is arranged at an angle with the flow guiding microchannels, and each first flow mixing channel is connected to at least two of the flow guiding microchannels.

3. The microchannel flat tube according to claim 2, characterized in that: The flow mixing area further includes a plurality of second flow mixing channels, the extension directions of the plurality of second flow mixing channels are respectively arranged at an angle with the flow guiding microchannel and the first flow mixing channel, and each of the second flow mixing channels is connected to at least two of the flow guiding microchannels.

4. The microchannel flat tube according to claim 3, characterized in that: The flow mixing area includes a plurality of sub-areas, and each of the sub-areas includes the first flow mixing channel and the second flow mixing channel that are cross-arranged.

5. The microchannel flat tube according to claim 4, characterized in that: The multiple sub-regions are arranged in the first direction, and adjacent sub-regions are connected to the same flow guiding microchannel.

6. The microchannel flat tube according to claim 5, characterized in that: The mixed flow area further includes a connecting flow channel, and the connecting flow channel is connected to the plurality of sub-areas respectively.

7. The microchannel flat tube according to claim 6, characterized in that: The communication channel is connected to an intersection of each of the sub-areas.

8. The microchannel flat tube according to claim 4, characterized in that: Each of the sub-regions is connected to at least three of the flow guiding microchannels, the two ends of each of the first mixed flow channels are respectively connected to two of the flow guiding microchannels, the two ends of each of the second mixed flow channels are respectively connected to two of the flow guiding microchannels, and the intersection of each of the sub-regions is connected to one of the flow guiding microchannels.

9. The microchannel flat tube according to claim 8, characterized in that: At least two sub-regions are correspondingly arranged in each of the flow guiding microchannels.

10. The microchannel flat tube according to claim 3, characterized in that: In the direction from the inlet end to the outlet end, the plurality of mixing areas are arranged at intervals, and the plurality of mixing areas include a first mixing area and a second mixing area, the first mixing area includes a plurality of the first mixing channels, and the second mixing area includes a plurality of the second mixing channels.

11. The microchannel flat tube according to claim 10, characterized in that: The first flow mixing region and the second flow mixing region are centrally symmetrically arranged.

12. The microchannel flat tube according to claim 1, characterized in that: In the direction from the inlet end to the outlet end, a plurality of the mixing flow areas are arranged at intervals in the flat tube body.

13. The microchannel flat tube according to claim 12, characterized in that: The number of the mixed flow areas located at the ends of the flat tube body is greater than the number of the mixed flow areas located in the middle of the flat tube body.

14. The microchannel flat tube according to any one of claims 1 to 13, characterized in that: The flat tube body includes a first cover plate and a second cover plate covering each other, the first cover plate is provided with a first through groove opening toward the second cover plate, the second cover plate is provided with a second through groove opening toward the first cover plate, the second through groove and the first through groove cooperate to form the flow guide microchannel and the mixed flow area.

15. A microchannel heat exchanger, characterized in that: include; A microchannel flat tube, wherein the microchannel flat tube is the microchannel flat tube according to any one of claims 1 to 14; Fins, wherein the fins are arranged on the microchannel flat tubes.

16. A thermal management system, characterized in that: Comprising the microchannel heat exchanger according to claim 15.

17. A vehicle, characterized in that: Comprising a thermal management system according to claim 16.

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