A stacked arc heat exchanger

Abstract

The present invention discloses a stacked arc-shaped heat exchanger, which relates to the technical field of heat exchangers, and comprises a heat exchanger core arranged in an arc shape, wherein a liquid inlet groove and a liquid outlet groove are respectively arranged at two ends of the heat exchanger core along the circumferential direction, and a liquid through hole group for low-pressure side fluid to flow through is arranged between the liquid inlet groove and the liquid outlet groove on the heat exchanger core, and the liquid through hole group comprises a plurality of liquid through holes arranged at intervals along the circumferential direction, and the liquid through holes penetrate the heat exchanger core along the thickness direction; the heat exchanger core comprises a first side plate, a heat exchange unit and a second side plate arranged in sequence from top to bottom, and a channel connecting the liquid inlet groove and the liquid outlet groove is arranged in the heat exchange unit, and the channel is for high-pressure side fluid to flow through and exchange heat with low-pressure side fluid; the heat exchange unit comprises a first heat exchange plate and a second heat exchange plate arranged in sequence from top to bottom, and the radial size of the liquid through hole located in the first heat exchange plate is smaller than the radial size of the liquid through hole located in the second heat exchange plate. The present invention realizes the improvement of the heat exchange capacity of the heat exchanger without substantially increasing the size.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchangers, and in particular to a stacked arc-shaped heat exchanger. Background Art

[0002] With the rapid development of aerospace technology, aircraft engines and gas turbines can reach higher temperature conditions, so the heat exchange capacity of heat exchangers used in conjunction with aircraft engines and gas turbines is required to be higher; most of the existing heat exchangers used in aircraft engines and gas turbines are limited by the use space and material properties, and the heat exchange area of ​​the heat exchanger is small and the heat exchange efficiency is low, resulting in the inability to meet the heat exchange and cooling requirements of high temperature conditions. At present, the heat exchange capacity of the heat exchanger is mainly enhanced by increasing the size of the heat exchanger. Most of the existing heat exchangers are square or cubic. The size of the heat exchanger needs to be significantly increased to improve the heat exchange capacity of the heat exchanger. However, the heat exchanger with a significantly increased size is not suitable for assembly in the relatively narrow installation space of aircraft engines and gas turbines. Therefore, a heat exchanger with a compact structure and strong heat exchange capacity is urgently needed. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that there is a lack of a heat exchanger with a compact structure and high heat exchange capacity for aircraft engines or gas turbines, thereby providing a stacked arc heat exchanger.

[0004] A stacked arc-shaped heat exchanger provided by the present invention comprises a heat exchanger core arranged in an arc shape, wherein a liquid inlet groove is arranged in one end of the heat exchanger core along the circumferential direction, and a liquid outlet groove is arranged at the other end, and a liquid through hole group is arranged between the liquid inlet groove and the liquid outlet groove along the circumferential direction on the heat exchanger core, wherein the liquid through hole group comprises a plurality of liquid through holes arranged at intervals along the circumferential direction, wherein the liquid through holes penetrate the heat exchanger core along the thickness direction and are suitable for low-pressure side fluid to flow through; the heat exchanger core comprises a first side plate, a heat exchange unit and a second side plate which are arranged in sequence from top to bottom along the thickness direction, A channel is provided in the heat exchange unit, and the two ends of the channel along the circumferential direction are respectively connected to the liquid inlet groove and the liquid outlet groove, and are suitable for allowing the high-pressure side fluid to flow through and exchange heat with the low-pressure side fluid; the heat exchange unit includes a first heat exchange plate and a second heat exchange plate arranged in sequence from top to bottom along the thickness direction, the radial size of the liquid through hole located in the first heat exchange plate is smaller than the radial size of the liquid through hole located in the second heat exchange plate, and the projections of the liquid through holes located in the first side plate and the second heat exchange plate in the thickness direction both overlap with the liquid through holes located in the second side plate.

[0005] A stacked arc heat exchanger according to the present invention has at least the following technical effects:

[0006] 1. A first heat exchange plate and a second heat exchange plate are stacked from top to bottom between a first side plate and a second side plate, wherein the radial dimension of the liquid through hole of the first heat exchange plate is smaller than the radial dimension of the liquid through hole of the second heat exchange plate, and the dimension of the liquid through hole of the second heat exchange plate is the same as the dimension of the liquid through hole of the first side plate and the second side plate; in the process of low-pressure side fluid flowing through the heat exchanger core along the thickness direction to exchange heat with high-pressure side fluid flowing through the channel, the dimension changes of the liquid through hole of the first heat exchange plate and the liquid through hole of the second heat exchange plate extend the path and time of the low-pressure side fluid flowing through the heat exchange unit without increasing the thickness of the heat exchange unit; at the same time, a plurality of liquid through holes are sequentially arranged along the arrangement path of the channel, thereby increasing the heat exchange area between the high-pressure side fluid flowing through the channel and the low-pressure side fluid flowing through the heat exchanger core, thereby improving the heat exchange capacity of the stacked arc-shaped heat exchanger without substantially increasing the dimension, so as to meet the requirements of an aircraft engine or a gas turbine.

[0007] 2. By arranging the multiple liquid holes of the liquid hole group between the liquid inlet groove and the liquid outlet groove at intervals along the circumferential direction, and the channels are arranged along the circumferential direction; the low-pressure side flow field of the low-pressure side fluid flowing through the liquid hole group through the heat exchanger core and the high-pressure side flow field of the high-pressure side fluid flowing through the heat exchanger core through the channel are evenly distributed without the phenomenon of biased flow, so that the low-pressure side fluid flowing through the liquid holes at different positions transfers heat evenly, and heat or cold can be dissipated in time, thereby improving the heat exchange efficiency and reducing energy consumption, thereby achieving improved heat exchange efficiency and heat exchange capacity without basically increasing the size.

[0008] 3. By setting the heat exchanger core to an arc-shaped structure, on the one hand, compared with a straight-line structure, the stacked arc-shaped heat exchanger can extend the path and time of the high-pressure side fluid flowing through the channel within the same size space, thereby improving the heat exchange efficiency between the high-pressure side fluid and the low-pressure side fluid, thereby improving the heat exchange capacity of the stacked arc-shaped heat exchanger to meet the needs of aircraft engines or gas turbines. On the other hand, it is suitable for installation in the relatively narrow arc-shaped space between the internal high-pressure shaft of an aircraft engine or gas turbine and the casing in the combustion chamber.

[0009] Preferably, the heat exchange unit further comprises a third heat exchange plate and a fourth heat exchange plate sequentially arranged from top to bottom along the thickness direction, the third heat exchange plate being arranged on a side of the second heat exchange plate away from the first heat exchange plate along the thickness direction; the radial dimension of the liquid through hole located in the third heat exchange plate is smaller than the radial dimension of the liquid through hole located in the fourth heat exchange plate, and the projection of the liquid through hole located in the fourth heat exchange plate along the thickness direction overlaps with the corresponding liquid through hole located in the second heat exchange plate.

[0010] Preferably, the radial size of the liquid through hole located in the second heat exchange plate is twice the radial size of the liquid through hole located in the first heat exchange plate; the radial size of the liquid through hole located in the fourth heat exchange plate is twice the radial size of the liquid through hole located in the third heat exchange plate; the liquid through holes located in the first heat exchange plate and the liquid through holes located in the third heat exchange plate are staggered in the radial direction, and the projection of the liquid through holes located in the first heat exchange plate along the thickness direction does not fall within the range of the corresponding liquid through holes located in the third heat exchange plate.

[0011] Preferably, there are multiple groups of liquid-through hole groups, which are arranged at intervals along the radial direction of the heat exchanger core; there are multiple channels, each of which is located between two adjacent groups of liquid-through hole groups along the radial direction.

[0012] Preferably, the channel includes a first channel, a second channel, a third channel and a fourth channel, the first channel is arranged on the first heat exchange plate, the second channel is arranged on the second heat exchange plate, the third channel is arranged on the third heat exchange plate, and the fourth channel is arranged on the fourth heat exchange plate.

[0013] Preferably, the upper end surface of the first heat exchange plate along the thickness direction is provided with a first groove, and the first groove and the sandwiched area of ​​the lower end surface of the first side plate form the first channel;

[0014] And / or, the upper end surface of the second heat exchange plate in the thickness direction is provided with a second groove, and the second groove and the sandwiched area of ​​the lower end surface of the first heat exchange plate form the second channel;

[0015] And / or, the upper end surface of the third heat exchange plate along the thickness direction is provided with a third groove, and the third groove and the sandwiched area of ​​the lower end surface of the second heat exchange plate form the third channel;

[0016] And / or, a fourth groove is provided on the upper end surface of the fourth heat exchange plate in the thickness direction, and the fourth groove and the sandwiched area of ​​the lower end surface of the third heat exchange plate form the fourth channel.

[0017] Preferably, the liquid through holes of the liquid through hole group are at least partially staggered with the corresponding liquid through holes of the adjacent liquid through hole group along the circumferential direction.

[0018] Preferably, a liquid inlet pipe is provided at the upper end of the first side plate in the thickness direction, the liquid inlet pipe is connected to the liquid inlet groove and is suitable for allowing the high-pressure side fluid to flow in.

[0019] Preferably, a liquid outlet pipe is provided at the upper end of the first side plate in the thickness direction, the liquid outlet pipe is connected to the liquid outlet groove and is suitable for allowing the high-pressure side fluid to flow out.

[0020] Preferably, a plurality of the heat exchange units are provided, and the plurality of heat exchange units are stacked in sequence between the first side plate and the second side plate along a thickness direction.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the three-dimensional structure of a stacked arc-shaped heat exchanger according to an embodiment of the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of a partially cutaway structure;

[0025] Figure 3 for Figure 2 A partial enlarged view of

[0026] Figure 4 for Figure 3 The enlarged schematic diagram of point A in the middle;

[0027] Figure 5 for Figure 3 A magnified schematic diagram of point B in the middle.

[0028] Description of reference numerals:

[0029] 1-Liquid outlet tank;

[0030] 2-Liquid passage hole;

[0031] 3-first side plate, 31-liquid inlet pipe, 32-liquid outlet pipe;

[0032] 4-heat exchange unit, 41-channel, 411-first channel, 412-second channel, 413-third channel, 414-fourth channel, 42-first heat exchange plate, 43-second heat exchange plate, 44-third heat exchange plate, 45-fourth heat exchange plate;

[0033] 5- Second side panel. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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.

[0037] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] like Figures 1 to 5The stacked arc-shaped heat exchanger provided in this embodiment is shown, which is applied to aircraft engines. The stacked arc-shaped heat exchanger includes a heat exchanger core arranged in an arc shape, wherein a liquid inlet groove is arranged at one end of the heat exchanger core along the circumferential direction, and a liquid outlet groove 1 is arranged at the other end. A liquid through hole group is arranged between the liquid inlet groove and the liquid outlet groove 1 along the circumferential direction on the heat exchanger core, and the liquid through hole group includes a plurality of liquid through holes 2 arranged at intervals along the circumferential direction. The liquid through holes 2 penetrate the heat exchanger core along the thickness direction and are suitable for low-pressure side fluid to flow through; the heat exchanger core includes a first side plate 3, a heat exchange unit 4 and a second side plate 5 arranged in sequence from top to bottom along the thickness direction. Plate 5, a channel 41 is arranged in the heat exchange unit 4, and the two ends of the channel 41 along the circumferential direction are respectively connected to the liquid inlet groove and the liquid outlet groove 1, and are suitable for the high-pressure side fluid to flow through and exchange heat with the low-pressure side fluid; the heat exchange unit 4 includes a first heat exchange plate 42 and a second heat exchange plate 43 arranged in sequence from top to bottom along the thickness direction, and the radial size of the liquid through hole 2 located in the first heat exchange plate 42 is smaller than the radial size of the liquid through hole 2 located in the second heat exchange plate 43, and the projections of the liquid through hole 2 located in the first side plate 3 and the second heat exchange plate 43 in the thickness direction overlap with the liquid through hole 2 located in the second side plate 5. It can be understood that the radial direction mentioned in the text refers to the radial direction of the heat exchanger core, the circumferential direction mentioned in the text refers to the circumferential direction of the heat exchanger core, and the thickness direction mentioned in the text refers to Figure 1 The thickness direction refers to the thickness direction of the heat exchanger core.

[0039] The stacked arc-shaped heat exchanger of this embodiment is formed by stacking a first heat exchange plate 42 and a second heat exchange plate 43 between the first side plate 3 and the second side plate 5 from top to bottom. The radial size of the liquid through hole 2 located in the first heat exchange plate 42 is smaller than the radial size of the liquid through hole 2 located in the second heat exchange plate 43. The size of the liquid through hole 2 located in the second heat exchange plate 43 is the same as the size of the liquid through hole 2 located in the first side plate 3 and the second side plate 5. In the process of heat exchange between the low-pressure side fluid flowing through the heat exchanger core along the thickness direction and the high-pressure side fluid flowing through the channel 41, compared with the liquid through hole 2 of the same size penetrating along the thickness direction, The heat exchange unit 4, the size changes of the liquid holes 2 located on the first heat exchange plate 42 and the liquid holes 2 located on the second heat exchange plate 43 in the stacked arc heat exchanger of this embodiment make it possible to extend the path and time of the low-pressure side fluid flowing through the heat exchange unit 4 without increasing the thickness of the heat exchange unit 4; at the same time, a plurality of liquid holes 2 are arranged in sequence along the arrangement path of the channel 41, so as to increase the heat exchange area between the high-pressure side fluid flowing through the channel 41 and the low-pressure side fluid flowing through the heat exchanger core, thereby improving the heat exchange capacity of the stacked arc heat exchanger of this embodiment without basically increasing the size, so as to meet the needs of aircraft engines. Furthermore, the plurality of liquid through holes 2 of the liquid through hole group are arranged circumferentially at intervals between the liquid inlet groove and the liquid outlet groove 1, and the channels 41 are arranged circumferentially; the low-pressure side flow field of the low-pressure side fluid flowing through the liquid through hole group through the heat exchanger core and the high-pressure side flow field of the high-pressure side fluid flowing through the heat exchanger core through channel 41 are evenly distributed without bias flow, so that the low-pressure side fluid flowing through the liquid through holes 2 at different positions transfers heat evenly, and heat or cold can be dissipated in time, thereby improving heat exchange efficiency and reducing energy consumption, and further improving the heat exchange capacity of the stacked arc heat exchanger of this embodiment without substantially increasing the size, so as to meet the high-efficiency heat exchange and cooling requirements of aircraft engines under higher temperature conditions.

[0040] The stacked arc heat exchanger of this embodiment is configured with an arc-shaped structure as the core of the heat exchanger. On the one hand, compared with a straight structure, the stacked arc heat exchanger of this embodiment can extend the path and time of the high-pressure side fluid flowing through the channel 41 within the same size space, thereby improving the heat exchange efficiency between the high-pressure side fluid and the low-pressure side fluid, thereby improving the heat exchange capacity of the stacked arc heat exchanger of this embodiment and meeting the high-efficiency heat exchange and cooling requirements of the high-temperature working conditions of the aircraft engine. On the other hand, it is suitable for installation in the relatively narrow arc space between the internal high-pressure shaft of the aircraft engine and the casing in the combustion chamber.

[0041] It should be noted that the stacked arc heat exchanger of this embodiment can also be applied to gas turbines.

[0042] It should also be noted that when the high-pressure side fluid is a cold fluid, the low-pressure side fluid is a hot fluid; conversely, when the high-pressure side fluid is a hot fluid, the low-pressure side fluid is a cold fluid. Ensure that the high-pressure side fluid and the low-pressure side fluid exchange heat when they flow in reverse directions in the heat exchanger core.

[0043] In a specific application, the cross-sectional profile of the liquid through hole 2 perpendicular to the thickness direction can be set to be square, circular or diamond, etc. In this embodiment, the liquid through hole 2 is set to be a square through hole.

[0044] The first side plate 3, the heat exchange unit 4 and the second side plate 5 in the heat exchanger core of the stacked arc heat exchanger of this embodiment can be integrally stamped and formed, the liquid hole 2 is obtained by laser cutting, and the channel 41 is obtained by chemical etching. The first side plate 3, the heat exchange unit 4 and the second side plate 5 are connected by laser welding or superplastic forming diffusion welding, so that the overall structure of the heat exchanger core is compact, the overall strength is high, the precision is high, the reliability is high, it can withstand high pressure, and meet the requirements of efficient heat exchange under high pressure and high temperature conditions of aircraft engines.

[0045] like Figures 3 to 5As shown, in the following embodiment of the present invention, the heat exchange unit 4 further includes a third heat exchange plate 44 and a fourth heat exchange plate 45 which are sequentially arranged from top to bottom along the thickness direction, and the third heat exchange plate 44 is arranged on the side of the second heat exchange plate 43 away from the first heat exchange plate 42 along the thickness direction; the radial dimension of the liquid through hole 2 located in the third heat exchange plate 44 is smaller than the radial dimension of the liquid through hole 2 located in the fourth heat exchange plate 45, and the projection of the liquid through hole 2 located in the fourth heat exchange plate 45 along the thickness direction overlaps with the corresponding liquid through hole 2 located in the second heat exchange plate 43. By adding a third heat exchange plate 44 and a fourth heat exchange plate 45 in the heat exchange unit 4, and the radial size of the liquid through hole 2 located in the third heat exchange plate 44 is smaller than the radial size of the liquid through hole 2 located in the fourth heat exchange plate 45, in the process of the low-pressure side fluid flowing through the heat exchanger core along the thickness direction and the high-pressure side fluid flowing through the channel 41 to exchange heat, compared with the use of liquid through holes 2 of the same size passing through the heat exchange unit 4 along the thickness direction, the size changes of the liquid through hole 2 located in the first heat exchange plate 42 and the liquid through hole 2 located in the second heat exchange plate 43 in the stacked arc-shaped heat exchanger of this embodiment, and the liquid through hole 2 located in the third heat exchange plate 44 and the liquid through hole 2 located in the fourth heat exchange plate 45 are smaller than the liquid through hole 2 located in the third heat exchange plate 44. The size change of the liquid through hole 2 of the plate 45 effectively prolongs the path and time of the low-pressure side fluid flowing through the heat exchange unit 4 without additionally increasing the thickness of the heat exchange unit 4, thereby improving the efficiency of heat exchange between the low-pressure side fluid and the high-pressure side fluid, ensuring that the heat exchange unit 4 formed by the first heat exchange plate 42, the second heat exchange plate 43, the third heat exchange plate 44 and the fourth heat exchange plate 45 stacked in sequence and compactly arranged has significantly improved heat exchange capacity, and realizes the improvement of the heat exchange capacity of the stacked arc heat exchanger of this embodiment without significantly increasing the size, so as to ensure that it is used in conjunction with an aircraft engine and meets the efficient heat exchange and cooling requirements of high-temperature conditions of the aircraft engine.

[0046] like Figure 2 As shown, specifically, the liquid inlet groove penetrates the heat exchange unit 4 along the thickness direction, and the liquid outlet groove 1 penetrates the heat exchange unit 4 along the thickness direction.

[0047] like Figure 3 and Figure 4As shown, in some embodiments of the present invention, the radial size of the liquid through hole 2 located at the second heat exchange plate 43 is twice the radial size of the liquid through hole 2 located at the first heat exchange plate 42; the radial size of the liquid through hole 2 located at the fourth heat exchange plate 45 is twice the radial size of the liquid through hole 2 located at the third heat exchange plate 44; the liquid through holes 2 located at the first heat exchange plate 42 and the liquid through holes 2 located at the third heat exchange plate 44 are staggered in the radial direction, and the projection of the liquid through holes 2 located at the first heat exchange plate 42 along the thickness direction does not fall within the range of the corresponding liquid through holes 2 located at the third heat exchange plate 44. Because the liquid through holes 2 located in the first heat exchange plate 42 and the liquid through holes 2 located in the third heat exchange plate 44 are staggered in the radial direction, and the projection combination of the liquid through holes 2 located in the first heat exchange plate 42 and the liquid through holes 2 located in the third heat exchange plate 44 in the thickness direction just overlaps with the liquid through holes 2 located in the second heat exchange plate 43, so in the process of the low-pressure side fluid flowing through the heat exchanger core in the thickness direction, the flow direction of the low-pressure side fluid is turned at the connection between the liquid through holes 2 located in the first side plate 3 and the liquid through holes 2 located in the first heat exchange plate 42 and at the connection between the liquid through holes 2 located in the second heat exchange plate 43 and the liquid through holes 2 located in the third heat exchange plate 44, so that the low-pressure side fluid flows in a path similar to a "broken line" (such as Figure 3 The route shown by L1 in FIG. 4 flows through the heat exchange unit 4, which fully extends the path of the low-pressure side fluid flowing through the heat exchanger core, and ensures that the efficiency of heat exchange between the low-pressure side fluid and the high-pressure side fluid is effectively improved without additionally increasing the thickness of the heat exchange unit 4, so as to improve the heat exchange capacity of the stacked arc heat exchanger of this embodiment without significantly increasing the size, so as to ensure that it is used in conjunction with the aircraft engine and meets the efficient heat exchange and cooling requirements of the high-temperature working conditions of the aircraft engine.

[0048] like Figure 1 , Figure 3 and Figure 5 As shown, in some embodiments of the present invention, the liquid hole groups are provided in multiple groups, and the multiple groups of liquid hole groups are arranged at intervals along the radial direction of the heat exchanger core; the channels 41 are provided in multiple groups, and each channel 41 is located between two adjacent groups of liquid hole groups in the radial direction. By providing a group of liquid hole groups on both sides of each channel 41 in the radial direction, the heat exchange area between the high-pressure side fluid flowing through the channel 41 and the low-pressure side fluid flowing through the heat exchanger core is increased, so as to improve the heat exchange capacity of the stacked arc heat exchanger of this embodiment without substantially increasing the size, so as to meet the needs of aircraft engines.

[0049] like Figure 1As shown, in some embodiments of the present invention, the liquid holes 2 of the liquid hole group are at least partially staggered with the corresponding liquid holes 2 of the adjacent liquid hole group along the circumferential direction. In this way, the liquid holes 2 of the two adjacent liquid hole groups located on both sides of each channel 41 along the radial direction are partially staggered along the circumferential direction, thereby improving the heat exchange effect between the low-pressure side fluid flowing through the two adjacent liquid hole groups and the high-pressure side fluid flowing through the corresponding channel 41.

[0050] like Figure 3 and Figure 5 As shown, in some embodiments of the present invention, the channel 41 includes a first channel 411, a second channel 412, a third channel 413 and a fourth channel 414, the first channel 411 is arranged on the first heat exchange plate 42, the second channel 412 is arranged on the second heat exchange plate 43, the third channel 413 is arranged on the third heat exchange plate 44, and the fourth channel 414 is arranged on the fourth heat exchange plate 45. In this way, the low-pressure side fluid can exchange heat with the high-pressure side fluid in the corresponding channel of the corresponding heat exchange plate when flowing through the liquid holes 2 of the corresponding heat exchange plate, thereby improving the heat exchange efficiency.

[0051] like Figure 3 and Figure 5 As shown, in some embodiments of the present invention, the upper end surface of the first heat exchange plate 42 along the thickness direction is provided with a first groove, and the first groove and the clamping area of ​​the lower end surface of the first side plate 3 form the first channel 411. By providing a first groove on the end surface of the first heat exchange plate 42 toward the first side plate 3 along the thickness direction, when the first side plate 3 is stacked on the upper end surface of the first heat exchange plate 42 and connected by diffusion welding, the first groove and the clamping area of ​​the lower end surface of the first side plate 3 form a closed first channel 411, the structure of the entire heat exchange unit 4 is more compact and it is convenient to chemically etch the first groove on the first heat exchange plate 42, the process is simple, avoids time-consuming complex process processing, reduces the manufacturing cost of components, and facilitates processing of more first grooves on the first heat exchange plate 42 of the same size, so that more first channels 411 are provided without increasing the size of the heat exchange unit 4, and the heat exchange area between the high-pressure side fluid flowing through the channel 41 and the low-pressure side fluid flowing through the heat exchanger core is increased, so that the heat exchange capacity of the stacked arc heat exchanger of this embodiment is improved without basically increasing the size, so as to meet the needs of aircraft engines.

[0052] like Figure 3 and Figure 5As shown, in some embodiments of the present invention, the upper end surface of the second heat exchange plate 43 along the thickness direction is provided with a second groove, and the second groove and the clamping area of ​​the lower end surface of the first heat exchange plate 42 form the second channel 412. By providing a second groove on the end surface of the second heat exchange plate 43 toward the first heat exchange plate 42 along the thickness direction, when the first heat exchange plate 42 is stacked on the upper end surface of the second heat exchange plate 43 and connected by diffusion welding, the second groove and the clamping area of ​​the lower end surface of the first heat exchange plate 42 form a closed second channel 412, the structure of the entire heat exchange unit 4 is more compact and it is convenient to chemically etch the second groove on the second heat exchange plate 43, the process is simple, avoids time-consuming complex process processing, reduces the manufacturing cost of components, and is convenient to process more second grooves on the second heat exchange plate 43 of the same size, so that more second channels 412 are provided without increasing the size of the heat exchange unit 4, and the heat exchange area between the high-pressure side fluid flowing through the channel 41 and the low-pressure side fluid flowing through the heat exchanger core is increased, so that the heat exchange capacity of the stacked arc heat exchanger of this embodiment is improved without basically increasing the size, so as to meet the needs of aircraft engines.

[0053] like Figure 3 and Figure 5 As shown, in some embodiments of the present invention, the upper end surface of the third heat exchange plate 44 along the thickness direction is provided with a third groove, and the third groove and the clamping area of ​​the lower end surface of the second heat exchange plate 43 form the third channel 413. By providing a third groove on the end surface of the third heat exchange plate 44 facing the second heat exchange plate 43 along the thickness direction, when the second heat exchange plate 43 is stacked on the upper end surface of the third heat exchange plate 44 and connected by diffusion welding, the third groove and the clamping area of ​​the lower end surface of the second heat exchange plate 43 form a closed third channel 413, the structure of the entire heat exchange unit 4 is more compact and it is convenient to chemically etch the third groove on the third heat exchange plate 44, the process is simple, avoids time-consuming complex process processing, reduces the manufacturing cost of components, and facilitates processing of more third grooves on the third heat exchange plate 44 of the same size, so that more third channels 413 are provided without increasing the size of the heat exchange unit 4, and the heat exchange area between the high-pressure side fluid flowing through the channel 41 and the low-pressure side fluid flowing through the heat exchanger core is increased, so as to improve the heat exchange capacity of the stacked arc heat exchanger of this embodiment without substantially increasing the size, so as to meet the needs of aircraft engines.

[0054] like Figure 3 and Figure 5As shown, in some embodiments of the present invention, the upper end surface of the fourth heat exchange plate 45 along the thickness direction is provided with a fourth groove, and the fourth groove and the clamping area of ​​the lower end surface of the third heat exchange plate 44 form the fourth channel 414. By providing a fourth groove on the end surface of the fourth heat exchange plate 45 facing the third heat exchange plate 44 along the thickness direction, when the third heat exchange plate 44 is stacked on the upper end surface of the fourth heat exchange plate 45 and connected by diffusion welding, the fourth groove and the clamping area of ​​the lower end surface of the third heat exchange plate 44 form a closed fourth channel 414, the structure of the entire heat exchange unit 4 is more compact and it is convenient to chemically etch the fourth groove on the fourth heat exchange plate 45, the process is simple, avoids time-consuming complex process processing, reduces the manufacturing cost of components, and is convenient to process more fourth grooves on the fourth heat exchange plate 45 of the same size, so that more fourth channels 414 are provided without increasing the size of the heat exchange unit 4, and the heat exchange area between the high-pressure side fluid flowing through the channel 41 and the low-pressure side fluid flowing through the heat exchanger core is increased, so as to improve the heat exchange capacity of the stacked arc heat exchanger of this embodiment without substantially increasing the size, so as to meet the needs of aircraft engines.

[0055] like Figure 1 As shown, in some embodiments of the present invention, the upper end of the first side plate 3 in the thickness direction is provided with a liquid inlet pipe 31, the liquid inlet pipe 31 is connected to the liquid inlet tank, and is suitable for allowing the high-pressure side fluid to flow in. Through the transition connection of the liquid inlet pipe 31, the high-pressure side fluid is transported to the liquid inlet tank.

[0056] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, the upper end of the first side plate 3 in the thickness direction is provided with a liquid outlet pipe 32, the liquid outlet pipe 32 is connected to the liquid outlet tank 1, and is suitable for allowing the high-pressure side fluid to flow out. Through the transition connection of the liquid outlet pipe 32, the high-pressure side fluid in the liquid outlet tank 1 can be output.

[0057] like Figures 2 to 5 As shown, in some embodiments of the present invention, the heat exchange unit 4 is provided with a plurality of heat exchange units 4, and the plurality of heat exchange units 4 are sequentially stacked between the first side plate 3 and the second side plate 5 along the thickness direction. Because the radial dimension of the liquid through hole 2 of the fourth heat exchange plate 45 of the upper heat exchange unit 4 is larger than the radial dimension of the liquid through hole 2 of the first heat exchange plate 42 of the lower heat exchange unit 4, in the process of the low-pressure side fluid flowing through the heat exchanger core along the thickness direction, the flow direction of the low-pressure side fluid turns at the connection between the liquid through hole 2 of the fourth heat exchange plate 45 of the upper heat exchange unit 4 and the liquid through hole 2 of the fourth heat exchange plate 45 of the adjacent and lower heat exchange unit 4, extending the flow path of the low-pressure side fluid at the connection between the two adjacent heat exchange units 4, thereby improving the heat exchange capacity of the stacked arc-shaped heat exchanger of this embodiment without significantly increasing the size.

[0058] In specific applications, the number of heat exchange units 4 is reasonably selected according to actual heat exchange, flow resistance and pressure drop requirements. For example, a large number of heat exchange units 4 are required for large heat exchange conditions.

[0059] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A stacked arc heat exchanger, characterized in that: The invention comprises a heat exchanger core arranged in an arc shape, wherein a liquid inlet groove is arranged in one end of the heat exchanger core along the circumferential direction, and a liquid outlet groove (1) is arranged at the other end; a liquid through hole group is arranged on the heat exchanger core along the circumferential direction between the liquid inlet groove and the liquid outlet groove (1); the liquid through hole group comprises a plurality of liquid through holes (2) arranged at intervals along the circumferential direction; the liquid through holes (2) penetrate the heat exchanger core along the thickness direction and are suitable for low-pressure side fluid to flow through; the heat exchanger core comprises a plurality of liquid through holes (2) arranged along the thickness direction from top to A first side plate (3), a heat exchange unit (4) and a second side plate (5) are sequentially arranged below the heat exchange unit (4), wherein a channel (41) is arranged in the heat exchange unit (4), and the two ends of the channel (41) along the circumferential direction are respectively connected to the liquid inlet groove and the liquid outlet groove (1), and are suitable for allowing a high-pressure side fluid to flow through and perform heat exchange with a low-pressure side fluid; the heat exchange unit (4) comprises a first heat exchange plate (42), a second heat exchange plate (43), a third heat exchange plate (44) and The fourth heat exchange plate (45), the projections of the liquid through holes (2) located on the first side plate (3), the second heat exchange plate (43) and the fourth heat exchange plate (45) along the thickness direction all overlap with the liquid through holes (2) located on the second side plate (5); the radial dimension of the liquid through holes (2) located on the second heat exchange plate (43) is twice the radial dimension of the liquid through holes (2) located on the first heat exchange plate (42); the radial dimension of the liquid through holes (2) located on the fourth heat exchange plate (45) is twice the radial dimension of the liquid through holes (2) located on the third heat exchange plate (44); the liquid through holes (2) located on the first heat exchange plate (42) and the liquid through holes (2) located on the third heat exchange plate (44) are staggered in the radial direction, and the projections of the liquid through holes (2) located on the first heat exchange plate (42) along the thickness direction do not fall within the range of the corresponding liquid through holes (2) located on the third heat exchange plate (44).

2. A stacked arc heat exchanger according to claim 1, characterized in that: The liquid-through hole groups are provided in a plurality of groups, and the plurality of groups of liquid-through hole groups are arranged at intervals along the radial direction of the heat exchanger core; the channels (41) are provided in a plurality, and each channel (41) is located between two adjacent groups of liquid-through hole groups along the radial direction.

3. The stacked arc heat exchanger according to claim 2, characterized in that: The channel (41) comprises a first channel (411), a second channel (412), a third channel (413) and a fourth channel (414); the first channel (411) is arranged on the first heat exchange plate (42), the second channel (412) is arranged on the second heat exchange plate (43), the third channel (413) is arranged on the third heat exchange plate (44), and the fourth channel (414) is arranged on the fourth heat exchange plate (45).

4. The stacked arc heat exchanger according to claim 3, characterized in that: The upper end surface of the first heat exchange plate (42) along the thickness direction is provided with a first groove, and the first groove and the sandwiched area of ​​the lower end surface of the first side plate (3) form the first channel (411); And / or, the upper end surface of the second heat exchange plate (43) along the thickness direction is provided with a second groove, and the second groove and the sandwiched area of ​​the lower end surface of the first heat exchange plate (42) form the second channel (412); And / or, the upper end surface of the third heat exchange plate (44) along the thickness direction is provided with a third groove, and the third groove and the sandwiched area of ​​the lower end surface of the second heat exchange plate (43) form the third channel (413); And / or, the upper end surface of the fourth heat exchange plate (45) along the thickness direction is provided with a fourth groove, and the fourth groove and the clamping area of ​​the lower end surface of the third heat exchange plate (44) form the fourth channel (414).

5. The stacked arc heat exchanger according to claim 2, characterized in that: The liquid through holes (2) of the liquid through hole group are at least partially staggered with the corresponding liquid through holes (2) of the adjacent liquid through hole group along the circumferential direction.

6. The stacked arc heat exchanger according to claim 1, characterized in that: A liquid inlet pipe (31) is provided at the upper end of the first side plate (3) in the thickness direction. The liquid inlet pipe (31) is connected to the liquid inlet groove and is suitable for allowing the high-pressure side fluid to flow in.

7. A stacked arc heat exchanger according to claim 1 or 6, characterized in that: A liquid outlet pipe (32) is provided at the upper end of the first side plate (3) in the thickness direction; the liquid outlet pipe (32) is connected to the liquid outlet groove (1) and is suitable for allowing the high-pressure side fluid to flow out.

8. The stacked arc heat exchanger according to claim 1, characterized in that: A plurality of the heat exchange units (4) are provided, and the plurality of heat exchange units (4) are stacked in sequence between the first side plate (3) and the second side plate (5) along the thickness direction.

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