A passive cooler

Abstract

This utility model provides a passive cooler, relating to the field of coolers, comprising several inner channel layers and several outer channel layers; the inner and outer channel layers are alternately arranged; the inner channel layer includes an upper core plate and a lower core plate; the front and rear sides of the upper core plate are provided with first extensions; the first extensions are lower than the upper core plate; the front and rear sides of the lower core plate are provided with second extensions; the second extensions are higher than the lower core plate; the lower surface of the first extension is in contact with the upper surface of the second extension; the outer channel layer includes two sealing strips; the two sealing strips are respectively provided on the left and right sides; the top of the sealing strips is provided with two third extensions, and the bottom is provided with two fourth extensions; the third extensions are in contact with the lower surface of the second extensions; the fourth extensions are in contact with the upper surface of the first extensions. This utility model can solve the problem in the prior art that adding inserts to the top of the first boss and the bottom of the second boss in each inner fin layer leads to long heat exchanger assembly time and low assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of coolers, and more particularly to a passive cooler. Background Technology

[0002] Coolers are a type of heat exchange equipment used to cool fluids. Common coolers include shell and tube coolers, plate coolers, and air-cooled coolers. Air-cooled coolers use air as a coolant to remove heat, and because they use natural air cooling, they can also be called passive coolers.

[0003] The structure of an air-cooled cooler can refer to a plate-fin heat exchanger with a long seal-free structure disclosed in Chinese Patent Application No. 202321157014.5. This heat exchanger includes a first cover plate, a second cover plate, and multiple sets of alternating outer and inner channel layers located between the first and second cover plates. The inner channel layer includes a first partition plate, a second partition plate, and inner fins located between the first and second partition plates. A first boss and a second boss are respectively provided on the opposite ends of the first and second partition plates, and these bosses are arranged along the length of the plate-fin heat exchanger with the long seal-free structure. The heat exchanger provided by the aforementioned patent reduces the difficulty of manufacturing by eliminating two long seals, enabling automated assembly.

[0004] When using the heat exchange equipment provided by the aforementioned patent, end caps are typically added to both ends of the heat exchanger core where short seals are provided for the inlet and outlet of coolant. However, due to the method of brazing the first and second protrusions together to reduce the use of long seals, the brazing area between the first and second protrusions and the end caps on the left and right sides is small, resulting in weak brazing between the end caps and the heat exchanger core, which can easily lead to instability in the heat exchanger structure. To address this, the prior art typically uses inserts of a certain thickness at the top of the first protrusion and the bottom of the second protrusion to increase the brazing area between the heat exchanger core and the end caps.

[0005] However, the heat exchanger core is composed of several inner fin layers. If inserts are added to the top of the first boss and the bottom of the second boss in each inner fin layer, the heat exchanger assembly time will be long and the assembly efficiency will be low. Utility Model Content

[0006] To address the aforementioned problems, this utility model provides a passive cooler that solves the problem of existing technologies typically using inserts of a certain thickness at the top of the first boss and the bottom of the second boss to increase the brazing area between the heat exchanger core and the end cap. However, since the heat exchanger core is composed of several inner fin layers, adding inserts at the top of the first boss and the bottom of the second boss in each inner fin layer would result in long assembly time and low assembly efficiency. This invention improves the assembly efficiency of the cooler.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] This utility model provides a passive cooler, comprising several inner channel layers and several outer channel layers; the inner channel layers and the outer channel layers are alternately arranged;

[0009] The inner channel layer includes an upper core plate and a lower core plate; the upper core plate and the lower core plate are arranged horizontally;

[0010] The upper core board is provided with a first extension on both the front and rear sides; the first extension is plate-shaped; the first extension is horizontally arranged; the first extension extends in the left-right direction; in the left-right direction, the length of the first extension is equal to the length of the upper core board; the first extension is lower than the upper core board; the side closer to the upper core board is taken as the inner side, and the inner edge of the first extension is connected to the outer edge of the upper core board.

[0011] The lower core plate is provided with a second extension on both its front and rear sides; the second extension is plate-shaped; the second extension is horizontally arranged; the second extension extends in the left-right direction; in the left-right direction, the length of the second extension is equal to the length of the lower core plate; the second extension is higher than the lower core plate; the inner edge of the second extension is connected to the outer edge of the lower core plate.

[0012] The lower plate surface of the first extension is in contact with the upper plate surface of the second extension; there is a space for fluid flow between the first core plate and the second core plate;

[0013] The outer channel layer includes two seals; the two seals are respectively disposed on the left and right sides; the seals are placed in the front-back direction; the top of the seal is in contact with the lower plate surface of the lower core plate of the upper inner channel layer; the bottom of the seal is in contact with the upper plate surface of the upper core plate of the lower inner channel layer.

[0014] The top of the seal has two third extensions; the two third extensions are located on the front and rear sides of the seal respectively; the third extensions are in contact with the lower surface of the second extension; the bottom of the seal has two fourth extensions; the two fourth extensions are located on the front and rear sides of the seal respectively; the fourth extensions are in contact with the upper surface of the first extension.

[0015] The passive cooler provided by this utility model preferably has the outer edge of the first extension bent upwards into an arc shape; the left and right ends of the outer edge of the first extension are planar; and the first extension is integrally formed.

[0016] The outer edge of the second extension curves downward in an arc shape; the left and right ends of the outer edge of the second extension are flat; the second extension is integrally formed.

[0017] The third extension is in contact with the lower surface plane end of the second extension; the fourth extension is in contact with the upper surface plane end of the first extension.

[0018] The passive cooler provided by this utility model preferably has a plurality of downwardly protruding first protrusions on the bottom surface of the upper core plate; all the first protrusions are evenly distributed on the upper core plate; the top surface of the lower core plate has a plurality of upwardly protruding second protrusions; one first protrusion and one second protrusion are arranged facing each other; the first protrusion and the second protrusion are in contact.

[0019] The passive cooler provided by this utility model preferably includes an outer channel layer that further includes outer fins; the outer fins are placed horizontally; the outer fins are located between the two seals; the outer fins are placed along the front-to-back direction and perpendicular to the fluid flow direction;

[0020] The top of the outer fin contacts the lower surface of the lower core plate of the upper inner channel layer; the bottom of the outer fin contacts the upper surface of the upper core plate of the lower inner channel layer.

[0021] The passive cooler provided by this utility model preferably includes a seal strip comprising a seal strip body, an upper gasket, and a lower gasket.

[0022] The upper pad includes an upper pad plate and two third extensions; the upper pad plate is located above the seal body; the upper pad plate is placed in the front-to-back direction; the two third extensions are located on the upper surface of the upper pad plate; the two third extensions are respectively located on the front and rear sides of the upper pad plate; the upper surface of the upper pad plate is in contact with the lower surface of the lower core plate.

[0023] The lower pad includes a lower pad plate and two fourth extensions; the lower pad plate is located below the seal body; the lower pad plate is arranged in the front-to-back direction; the two fourth extensions are located on the lower surface of the lower pad plate; the two fourth extensions are respectively located on the front and rear sides of the lower pad plate; the lower surface of the lower pad plate is in contact with the upper surface of the upper core plate.

[0024] The passive cooler provided by this utility model is preferably provided in the following manner: if both the top and bottom of the passive cooler are the outer channel layers, the outer channel layer located at the top of the passive cooler is designated as the first outer channel layer, and the outer channel layer located at the bottom of the passive cooler is designated as the second outer channel layer.

[0025] It also includes an upper partition and a lower partition; the upper partition covers the top of the first outer channel layer; the lower partition covers the bottom of the second outer channel layer;

[0026] The lower surface of the upper partition plate contacts the top of the outer fin of the first outer channel layer; the upper surface of the lower partition plate contacts the bottom of the outer fin of the second outer channel layer.

[0027] The upper partition is sealed and fixed to the top of the seal of the first outer channel layer; the lower partition is sealed and fixed to the bottom of the seal of the second outer channel layer.

[0028] The passive cooler provided by this utility model preferably further includes an upper cover plate and a lower cover plate; the upper cover plate covers the upper surface of the upper partition plate; and the lower cover plate covers the lower surface of the lower partition plate.

[0029] The passive cooler provided by this utility model preferably further includes an inlet cap and an outlet cap; the inlet cap is provided with an inlet; and the outlet cap is provided with an outlet.

[0030] The cooler core is composed of several inner channel layers and several outer channel layers alternately, and the water inlet seal and the water outlet seal are respectively arranged on the left and right sides of the cooler core.

[0031] This utility model provides a passive cooler, comprising several inner channel layers and several outer channel layers; the inner channel layers and the outer channel layers are alternately arranged;

[0032] The inner channel layer includes an upper core plate and a lower core plate; the upper core plate and the lower core plate are arranged horizontally;

[0033] The upper core board is provided with a first extension on both the front and rear sides; the first extension is plate-shaped; the first extension is horizontally arranged; the first extension extends in the left-right direction; in the left-right direction, the length of the first extension is equal to the length of the upper core board; the first extension is lower than the upper core board; the side closer to the upper core board is taken as the inner side, and the inner edge of the first extension is connected to the outer edge of the upper core board.

[0034] The lower core plate is provided with a second extension on both its front and rear sides; the second extension is plate-shaped; the second extension is horizontally arranged; the second extension extends in the left-right direction; in the left-right direction, the length of the second extension is equal to the length of the lower core plate; the second extension is higher than the lower core plate; the inner edge of the second extension is connected to the outer edge of the lower core plate.

[0035] The lower plate surface of the first extension is in contact with the upper plate surface of the second extension; there is a space for fluid flow between the first core plate and the second core plate;

[0036] The outer channel layer includes two seals; the two seals are respectively disposed on the left and right sides; the seals are placed in the front-back direction; the top of the seal is in contact with the lower plate surface of the lower core plate of the upper inner channel layer; the bottom of the seal is in contact with the upper plate surface of the upper core plate of the lower inner channel layer.

[0037] It also includes several fastening components; each fastening component includes two fasteners; the two fasteners are respectively located on the front and rear sides of the inner channel layer; each fastener includes an upper insert plate, a lower insert plate, and a connecting plate; the connecting plate is fixedly connected to the upper insert plate and the lower insert plate; the lower surface of the upper insert plate is in contact with the upper surface of the first extension; the upper surface of the lower insert plate is in contact with the lower surface of the second extension; the connecting plate is adjacent to the outer edge of the first extension; the upper surface of the upper insert plate is in contact with the bottom of the seal of the upper outer channel layer, and the lower surface of the lower insert plate is in contact with the top of the seal of the lower outer channel layer.

[0038] The passive cooler provided by this utility model preferably has a first limiting groove on the lower surface of the upper insert plate and the upper surface of the lower insert plate; a limiting protrusion is provided on the upper surface of the first extension and the lower surface of the second extension; the limiting protrusion is engaged in the first limiting groove.

[0039] The above technical solution has the following advantages or beneficial effects:

[0040] The passive cooler provided by this utility model includes an inner channel layer, which includes an upper core plate and a lower core plate to form a channel for the flow of high-temperature fluid. Specifically, in order to prevent the high-temperature fluid from overflowing the inner channel layer, two seals are usually set between the upper core plate and the lower core plate. However, using seals to seal the upper core plate and the lower core plate requires more cost and reduces the assembly efficiency of the cooler. Therefore, a first extension is set on both the front and rear sides of the upper core plate, and a second extension is set on both the front and rear sides of the lower core plate. By making the first extension lower than the upper core plate and the second extension higher than the lower core plate, a gap is generated between the first core plate and the second core plate when the lower plate surface of the first extension and the upper plate surface of the second extension are put together. At this time, since the first extension and the second extension are in contact, the high-temperature fluid cannot overflow from the front and rear sides of the inner channel layer, thereby eliminating the need for seals, improving the assembly efficiency of the cooler and reducing the production cost of the cooler.

[0041] When assembling this passive cooler, the use of a first extension and a second extension to fit together eliminates the need for front and rear side seals, reducing the contact area between the left and right sides and the end cap. This results in weak brazing between the end cap and the cooler core. Therefore, inserts are typically placed above the first extension and below the second extension to increase the contact area between the end cap and the left and right sides of the cooler core, creating a more stable structure. However, the cooler core consists of several inner channel layers. Adding a single insert above the first extension and below the second extension in each inner channel layer would lead to long assembly time and low assembly efficiency. To solve this problem, the seals of the outer channel layers are improved. Specifically, two third extensions are provided at the top of the seal, located on the front and rear sides respectively. The third extensions are attached to the lower surface of the second extension, acting as inserts below the second extension to fill the gap between the second extension and the seal. Two fourth extensions are provided at the bottom of the seal, located on the front and rear sides respectively. The fourth extension, which is attached to the upper surface of the first extension, acts as an insert above the first extension, filling the gap between the first extension and the seal. By integrating the third and fourth extensions onto the seal, i.e., integrating the insert onto the seal, the number of inserts required is effectively reduced. Only the seal needs to be assembled to fill the gap between the seal and the first and second extensions, thus reducing the time required to place the inserts and improving assembly efficiency. Simultaneously, the third extension is attached to the lower surface of the second extension of the upper inner channel layer, and the seal... The top of the seal strip contacts the lower surface of the lower core plate. At this time, the seal strip forms an upward concave shape and the lower core plate forms a downward convex shape, thereby enabling the seal strip and the lower core plate to be positioned and assembled, preventing the lower core plate from shifting back and forth during installation and improving the assembly efficiency of the cooler; the fourth extension is attached to the upper surface of the first extension of the next inner channel layer, and the bottom of the seal strip contacts the upper surface of the upper core plate. At this time, the seal strip forms a downward concave shape and the upper core plate forms an upward convex shape, thereby enabling the seal strip and the upper core plate to be positioned and assembled, preventing the upper core plate from shifting back and forth during installation and improving the assembly efficiency of the cooler;

[0042] In existing technologies, during assembly, inserts of a certain thickness are typically added to the top of the first boss and the bottom of the second boss to increase the brazing area between the heat exchanger core and the end cap. However, the heat exchanger core is composed of several inner fin layers. Adding inserts to the top of the first boss and the bottom of the second boss in each inner fin layer would result in long assembly time and low assembly efficiency. The passive cooler provided by this invention reduces the number of inserts by integrating the third and fourth extensions onto the seal, thereby reducing the time required for insert placement. Furthermore, the seal with the third and fourth extensions can provide front and rear positioning for the core plate, facilitating positioning and installation. This reduces the time cost for assemblers to position and align the various inner and outer channel layers in the cooler core, thereby improving the assembly efficiency of the cooler. Attached Figure Description

[0043] The present invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not intentionally drawn to scale; the focus is on illustrating the gist of the invention.

[0044] Figure 1 This is a three-dimensional structural diagram of the passive cooler provided in Embodiment 1 of this utility model.

[0045] Figure 2 This is a three-dimensional structural diagram of the cooler core in the passive cooler provided in Embodiment 1 of this utility model.

[0046] Figure 3 yes Figure 2 Enlarged diagram of the circled area.

[0047] Figure 4 This is a schematic diagram of the main structure of the inner channel layer in the passive cooler provided in Embodiment 1 of this utility model.

[0048] Figure 5 yes Figure 4 Enlarged diagram of the circled area.

[0049] Figure 6 This is a right-side structural schematic diagram of the inner channel layer in the passive cooler provided in Embodiment 1 of this utility model.

[0050] Figure 7 This is a top view of the inner channel layer in the passive cooler provided in Embodiment 1 of this utility model.

[0051] Figure 8 This is a bottom view of the inner channel layer in the passive cooler provided in Embodiment 1 of this utility model.

[0052] Figure 9 This is a three-dimensional structural diagram of the cooler core in the passive cooler provided in Embodiment 2 of this utility model.

[0053] Figure 10 yes Figure 9 Enlarged diagram of the circled area.

[0054] Figure 11 This is a right-side structural schematic diagram of the inner channel layer in the passive cooler provided in Embodiment 2 of this utility model.

[0055] Figure 12 This is a three-dimensional structural diagram of the cooler core in the passive cooler provided in Embodiment 3 of this utility model.

[0056] Figure 13 yes Figure 12 Enlarged diagram of the circled area.

[0057] Figure 14 This is a right-side view of the inner channel layer in the passive cooler provided in Embodiment 3 of this utility model. Detailed Implementation

[0058] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0059] Example 1:

[0060] like Figures 1 to 8 As shown, the passive cooler provided in Embodiment 1 of this utility model includes a plurality of inner channel layers 1 and a plurality of outer channel layers 2; the inner channel layers 1 and the outer channel layers 2 are alternately arranged;

[0061] The inner channel layer 1 includes an upper core plate 11 and a lower core plate 12; the upper core plate 11 and the lower core plate 12 are arranged horizontally;

[0062] The upper core board 11 is provided with a first extension 111 on both the front and rear sides; the first extension 111 is plate-shaped; the first extension 111 is horizontally arranged; the first extension 111 extends in the left and right direction; in the left and right direction, the length of the first extension 111 is equal to the length of the upper core board 11; the first extension 111 is lower than the upper core board 11; the side closer to the upper core board 11 is taken as the inner side, and the inner edge of the first extension 111 is connected to the outer edge of the upper core board 11.

[0063] The lower core plate 12 is provided with a second extension 121 on both the front and rear sides; the second extension 121 is plate-shaped; the second extension 121 is horizontally arranged; the second extension 121 extends in the left and right direction; in the left and right direction, the length of the second extension 121 is equal to the length of the lower core plate 12; the second extension 121 is higher than the lower core plate 12; the inner edge of the second extension 121 is connected to the outer edge of the lower core plate 12.

[0064] The lower plate surface of the first extension 111 is in contact with the upper plate surface of the second extension 121; there is a space for fluid flow between the first core plate 11 and the second core plate 12.

[0065] The outer channel layer 2 includes two seals 22; the two seals 22 are respectively disposed on the left and right sides; the seals 22 are placed in the front-back direction; the top of the seals 22 is in contact with the lower plate surface of the lower core plate 12 of the upper inner channel layer 1; the bottom of the seals 22 is in contact with the upper plate surface of the upper core plate 11 of the lower inner channel layer 1.

[0066] The top of the seal 22 is provided with two third extensions 221; the two third extensions 221 are respectively located on the front and rear sides of the seal 22; the third extensions 221 are in contact with the lower surface of the second extension 121; the bottom of the seal 22 is provided with two fourth extensions 222; the two fourth extensions 222 are respectively located on the front and rear sides of the seal 22; the fourth extensions 222 are in contact with the upper surface of the first extension 111.

[0067] When using the passive cooler provided in Embodiment 1 of this utility model, air flows as a cooling medium in the outer channel layer 2; high-temperature fluid flows in the inner channel layer 1, specifically in the space between the first core plate 11 and the second core plate 12; by placing fins or other heat-conducting media between the first core plate 11 and the second core plate 12, the heat exchange efficiency between the high-temperature fluid and the cold air is accelerated, and the heat of the high-temperature fluid is transferred to the upper core plate 11 and the lower core plate 12, and dissipated through the outer channel layer 1.

[0068] The passive cooler provided in Embodiment 1 of this utility model includes an inner channel layer 1, which includes an upper core plate 11 and a lower core plate 12, forming a channel for the flow of high-temperature fluid. Specifically, to prevent high-temperature fluid from overflowing the inner channel layer 1, two sealing strips are usually provided between the upper core plate 11 and the lower core plate 12. However, using sealing strips to seal the upper core plate 11 and the lower core plate 12 requires more cost and reduces the assembly efficiency of the cooler. Therefore, a first extension 111 is provided on both the front and rear sides of the upper core plate 11, and a second extension 111 is provided on the lower core plate 12. The front and rear sides of the 2 are provided with second extensions 121. By making the first extension 111 lower than the upper core plate 11 and the second extension 121 higher than the lower core plate 12, a gap is generated between the first core plate 11 and the second core plate 12 when the lower plate surface of the first extension 111 and the upper plate surface of the second extension 121 are attached. At this time, since the first extension 111 and the second extension 121 are attached, the high temperature fluid cannot overflow from the front and rear sides of the inner channel layer 1, thereby eliminating the need for the installation of the seal, improving the assembly efficiency of the cooler and reducing the production cost of the cooler.

[0069] When assembling this passive cooler, the use of a fitting method between the first extension 111 and the second extension 121 eliminates the need for front and rear side seals, reducing the contact area between the left and right sides and the end cap. This results in weak brazing between the end cap and the cooler core. Therefore, inserts are typically placed above the first extension 111 and below the second extension 121 to increase the contact area between the end cap and the left and right sides of the cooler core, creating a more stable structure. However, the cooler core consists of several inner channel layers 1. Adding a single insert above the first extension 111 and below the second extension 121 in each inner channel layer 1 would lead to… The heat exchanger assembly process is time-consuming and inefficient. To address this issue, the seal 22 of the outer channel layer 2 is improved. Specifically, two third extensions 221 are provided at the top of the seal 22, located on the front and rear sides of the seal 22 respectively. The third extensions 221 are attached to the lower surface of the second extension 121, acting as inserts below the second extension 121 to fill the gap between the second extension 121 and the seal 22. Two fourth extensions 222 are provided at the bottom of the seal 22, located on the front and rear sides of the seal 22 respectively. The fourth extensions 222 are attached to the first extension... The upper surfaces of the first extension 111 and the second extension 121 are attached to each other. The fourth extension 222 is equivalent to an insert above the first extension 111, used to fill the gap between the first extension 111 and the seal 22. By integrating the third extension 221 and the fourth extension 222 onto the seal 22, that is, integrating the insert onto the seal 22, the number of inserts can be effectively reduced. Only the seal 22 needs to be assembled to fill the gap between the seal 22 and the first extension 111 and the second extension 121, thereby reducing the time required to place the insert and improving assembly efficiency. At the same time, the third extension 221 is attached to the lower surface of the second extension 121 of the upper inner channel layer 1, and the seal... The top of the seal 22 contacts the lower surface of the lower core plate 12. At this time, the seal 22 forms an upward concave shape and the lower core plate 12 forms a downward convex shape, thereby enabling the seal 22 and the lower core plate 12 to be positioned and assembled, preventing the lower core plate 12 from shifting back and forth during installation and improving the assembly efficiency of the cooler; the fourth extension 222 is attached to the upper surface of the first extension 111 of the next inner channel layer 1, and the bottom of the seal 22 contacts the upper surface of the upper core plate 11. At this time, the seal 22 forms a downward concave shape and the upper core plate 11 forms an upward convex shape, thereby enabling the seal 22 and the upper core plate 11 to be positioned and assembled, preventing the upper core plate 11 from shifting back and forth during installation and improving the assembly efficiency of the cooler;

[0070] In existing technologies, during assembly, inserts of a certain thickness are typically added to the top of the first boss and the bottom of the second boss to increase the brazing area between the heat exchanger core and the end cap. However, the heat exchanger core is composed of several inner fin layers. Adding inserts to the top of the first boss and the bottom of the second boss in each inner fin layer would result in long assembly time and low assembly efficiency. The passive cooler provided in Embodiment 1 of this utility model reduces the number of inserts by integrating the third extension 221 and the fourth extension 222 onto the seal 22, thereby reducing the time required for insert placement. Furthermore, the seal 22 with the third extension 221 and the fourth extension 222 can provide front and rear positioning for the core plate, facilitating positioning and installation. This reduces the time cost required for assemblers to position and align the various inner channel layers 1 and outer channel layers 2 in the cooler core, thereby improving the assembly efficiency of the cooler.

[0071] The passive cooler provided in Embodiment 1 of this utility model preferably has an outer edge of the first extension 111 that is curved upward and arc-shaped; the left and right ends of the outer edge of the first extension 111 are planar; and the first extension 111 is integrally formed.

[0072] The outer edge of the second extension 121 is curved downwards and is arc-shaped; the left and right ends of the outer edge of the second extension 121 are flat; the second extension 121 is integrally formed.

[0073] During cooler assembly, to prevent high-temperature fluid from overflowing from the gap between the first extension 111 and the second extension 121, it is usually necessary to compress the first extension 111 and the second extension 121 to ensure that there are no gaps between them. However, if too much force is applied during compression, the first extension 111 and the second extension 121 may become stressed and damaged, causing fluid to overflow from the gap between them. Therefore, it is necessary to enhance the strength of the first extension 111 and the second extension 121 to give them good compressive strength. Specifically, the outer edge of the first extension 111 is bent upwards, and the left and right ends of the outer edge of the first extension 111 are flat, while the outer edge of the second extension 121 is bent downwards, and the outer edge of the second extension 121 is flat. The left and right ends of the extension are flat. By setting a structure with a partial bend in the middle and flat sides, when extrusion is applied, the stress between the plates diffuses to the partial bend in the middle. In particular, the bend here is arc-shaped, so that the stress is evenly distributed at the bend, thereby relieving stress concentration and improving the strength of the first extension 111 and the second extension 121. Furthermore, the flat sections on both sides and the bend in the middle are smoothly connected, so that the stress transmitted to the bend in the middle can be distributed to the flat sections on the left and right sides, avoiding stress concentration in the bend in the middle and causing the bend in the middle to bend and bend, reducing the load on the bend in the middle, thereby further improving the strength of the first extension 111 and the second extension 121. The above structure can effectively prevent the first extension 111 and the second extension 121 from being damaged by large extrusion forces, and improve the service life of the cooler.

[0074] It should be noted that the lower surface plane end of the third extension 221 is attached to the lower surface plane end of the second extension 121, and the upper surface plane end of the fourth extension 222 is attached to the upper surface plane end of the first extension 111, thereby avoiding the overlap of the bent portion of the third extension 221 and the first extension 111, and avoiding the overlap of the bent portion of the fourth extension 222 and the second extension 121.

[0075] The passive cooler provided in Embodiment 1 of this utility model preferably has a plurality of downwardly protruding first protrusions 112 on the bottom surface of the upper core plate 11; all the first protrusions 112 are evenly distributed on the upper core plate 11; the top surface of the lower core plate 12 has a plurality of upwardly protruding second protrusions 122; one first protrusion 112 and one second protrusion 122 are arranged facing each other; the first protrusion 112 and the second protrusion 122 are in contact.

[0076] The first protrusion 112 and the second protrusion 122 replace the inner fins, simulating the ability of the inner fins to conduct heat between the upper core plate 11 and the lower core plate 12. By reducing the inner fins, the production cost of the cooler can be reduced, while the assembly time required for the inner fins is reduced, thus improving the assembly efficiency of the cooler.

[0077] When the high-temperature fluid enters the inner channel layer 1, the high-temperature fluid flows in the gap between the first protrusion 112 and exchanges heat through the first protrusion 112 and the second protrusion 122. The heat of the fluid is transferred to the upper core plate 11 and the lower core plate 12 and dissipated through the outer channel layer 1.

[0078] When the fluid flows through the first protrusion 112 and the second protrusion 122 in the inner channel layer 1, it will be blocked by the first protrusion 112 and the second protrusion 122, which will cause the fluid to form turbulence. The fluid comes into contact with multiple first protrusions 112 and second protrusions 122 in the inner channel layer 1, which increases the contact area between the fluid and the heat transfer medium, thereby improving the heat exchange efficiency.

[0079] The passive cooler provided in Embodiment 1 of this utility model is preferably designed to cool the inner channel layer 1 through the outer channel layer 2. In particular, the outer channel layer 2 adopts an air-cooled cooling method. Specifically, the outer channel layer 2 also includes outer fins 21. The outer fins 21 are placed horizontally between two seals 22. The outer fins 21 are placed in the front-back direction and perpendicular to the fluid flow direction. Air flows in the gaps of the outer fins 21. The heat in the inner channel layer 1 is guided from the upper core plate 11 and the lower core plate 12 through the outer fins 21, and the heat on the outer fins 21 is dissipated by the air.

[0080] The top of the outer fin 21 is in contact with the lower plate surface of the lower core plate 12 of the upper inner channel layer 1, and the bottom of the outer fin 21 is in contact with the upper plate surface of the upper core plate 11 of the lower inner channel layer 1, so that the outer fin 21 can directly contact the upper core plate 11 and the lower core plate 12, thereby enhancing the heat conduction effect of the outer fin 21 and improving the heat exchange efficiency of the heat exchanger.

[0081] At this time, the top of the seal 22 is sealed and fixed to the lower plate surface of the lower core plate 12 of the upper inner channel layer 1, and the bottom of the seal 22 is sealed and fixed to the upper plate surface of the upper core plate 11 of the lower inner channel layer 1, thereby enhancing the sealing effect of the seal 22 on the outer channel layer 2 and improving the stability of the cooler.

[0082] The passive cooler provided in Embodiment 1 of this utility model is preferably an outer channel layer 2, where the top and bottom of the passive cooler are both outer channel layers 2; the outer channel layer 2 located at the top of the passive cooler is designated as the first outer channel layer 201, and the outer channel layer 2 located at the bottom of the passive cooler is designated as the second outer channel layer 202.

[0083] In order to make the first outer channel layer 201 and the second outer channel layer 202 form a complete flow channel, an upper partition 31 and a lower partition 32 are also included; the upper partition 31 covers the top of the first outer channel layer 201; the lower partition 32 covers the bottom of the second outer channel layer 202.

[0084] The lower surface of the upper partition 31 contacts the top of the outer fin 21 of the first outer channel layer 201 to prevent the outer fin 21 in the first outer channel layer 201 from becoming loose; the upper surface of the lower partition 32 contacts the bottom of the outer fin 21 of the second outer channel layer 202 to prevent the outer fin 21 in the second outer channel layer 202 from becoming loose.

[0085] Since the seal 22 is provided with a third extension 221 and a fourth extension 222, if the upper partition 31 and the lower partition 32 are directly attached to the seal 22, a gap may be left between the outer fin 21 and the upper partition 31 or the lower partition 32, which may further cause fluid to flow into the first outer channel layer 201 or the second outer channel layer 202. In order to seal and fix the upper partition 31 to the top of the seal 22 of the first outer channel layer 201 and the lower partition 32 to the bottom of the seal 22 of the second outer channel layer 202, mating holes 301 are provided on the four corners of the upper partition 31 and the lower partition 32. When the upper partition 31 or the lower partition 32 is placed on the seal 22, the third extension 221 or the fourth extension 222 extends into the mating hole 301 and is attached to the edge of the mating hole 301, thereby avoiding gaps when the upper partition 31 or the lower partition 32 is attached to the seal 22.

[0086] The passive cooler provided in Embodiment 1 of this utility model preferably further includes an upper cover plate 41 and a lower cover plate 42. The upper cover plate 41 covers the upper surface of the upper partition plate 31 and is in contact with the upper surface of the upper partition plate 31 and the third extension 221 at the top of the seal 22. The lower cover plate 42 covers the lower surface of the lower partition plate 32 and is in contact with the lower surface of the lower partition plate 32 and the fourth extension 222 at the bottom of the seal 22. The upper cover plate 41 can prevent the first outer channel layer 201 from directly colliding with external objects, and the lower cover plate 42 can prevent the second outer channel layer 202 from directly colliding with external objects, thereby reducing the risk of damage caused by the cooler core colliding with external objects and extending the service life of the cooler.

[0087] The passive cooler provided in Embodiment 1 of this utility model preferably further includes an inlet cap 51 and an outlet cap 52; the inlet cap 51 has an inlet 511 for introducing high-temperature fluid into the inner channel layer 1; the outlet cap 52 has an outlet 521 for discharging the cooled fluid out of the inner channel layer 1; a plurality of inner channel layers 1 and a plurality of outer channel layers 2 alternately constitute the cooler core, and the inlet cap 51 and the outlet cap 52 are respectively disposed on the left and right sides of the cooler core.

[0088] The passive cooler provided in Embodiment 1 of this utility model preferably further reduces the production cost of the cooler by forming the first protrusion 112 and the second protrusion 122 by embossing. The top of the first protrusion 112 is provided with a first intaglio 113 with the same outline as the first protrusion 112, and the bottom of the second protrusion 122 is provided with a second intaglio 123 with the same outline as the second protrusion 122. This reduces the amount of material used in the preparation of the upper core plate 11 and the lower core plate 12. At the same time, the use of thinner materials for the first protrusion 112 and the second protrusion 122 can reduce the heat transfer time and improve the heat exchange efficiency of the heat exchanger.

[0089] Example 2:

[0090] like Figures 9-11 As shown, Embodiment 2 of this utility model provides a passive cooler, which includes a plurality of inner channel layers 1 and a plurality of outer channel layers 2; the inner channel layers 1 and the outer channel layers 2 are alternately arranged;

[0091] The inner channel layer 1 includes an upper core plate 11 and a lower core plate 12; the upper core plate 11 and the lower core plate 12 are arranged horizontally;

[0092] The upper core board 11 is provided with a first extension 111 on both the front and rear sides; the first extension 111 is plate-shaped; the first extension 111 is horizontally arranged; the first extension 111 extends in the left and right direction; in the left and right direction, the length of the first extension 111 is equal to the length of the upper core board 11; the first extension 111 is lower than the upper core board 11; the side closer to the upper core board 11 is taken as the inner side, and the inner edge of the first extension 111 is connected to the outer edge of the upper core board 11.

[0093] The lower core plate 12 is provided with a second extension 121 on both the front and rear sides; the second extension 121 is plate-shaped; the second extension 121 is horizontally arranged; the second extension 121 extends in the left and right direction; in the left and right direction, the length of the second extension 121 is equal to the length of the lower core plate 12; the second extension 121 is higher than the lower core plate 12; the inner edge of the second extension 121 is connected to the outer edge of the lower core plate 12.

[0094] The lower plate surface of the first extension 111 is in contact with the upper plate surface of the second extension 121; there is a space for fluid flow between the first core plate 11 and the second core plate 12.

[0095] The outer channel layer 2 includes two seals 22; the two seals 22 are respectively disposed on the left and right sides; the seals 22 are placed in the front-back direction; the top of the seals 22 is in contact with the lower plate surface of the lower core plate 12 of the upper inner channel layer 1; the bottom of the seals 22 is in contact with the upper plate surface of the upper core plate 11 of the lower inner channel layer 1.

[0096] The top of the seal 22 is provided with two third extensions 221; the two third extensions 221 are respectively located on the front and rear sides of the seal 22; the third extensions 221 are in contact with the lower surface of the second extension 121; the bottom of the seal 22 is provided with two fourth extensions 222; the two fourth extensions 222 are respectively located on the front and rear sides of the seal 22; the fourth extensions 222 are in contact with the upper surface of the first extension 111.

[0097] When using the passive cooler provided in Embodiment 2 of this utility model, air flows as a cooling medium in the outer channel layer 2; high-temperature fluid flows in the inner channel layer 1, specifically in the space between the first core plate 11 and the second core plate 12; by placing fins or other heat-conducting media between the first core plate 11 and the second core plate 12, the heat exchange efficiency between the high-temperature fluid and the cold air is accelerated, and the heat of the high-temperature fluid is transferred to the upper core plate 11 and the lower core plate 12, and dissipated through the outer channel layer 1.

[0098] The passive cooler provided in Embodiment 2 of this utility model includes an inner channel layer 1, which includes an upper core plate 11 and a lower core plate 12, forming a channel for the flow of high-temperature fluid. Specifically, to prevent high-temperature fluid from overflowing the inner channel layer 1, two sealing strips are usually provided between the upper core plate 11 and the lower core plate 12. However, using sealing strips to seal the upper core plate 11 and the lower core plate 12 requires more cost during cooler assembly and reduces the assembly efficiency of the cooler. Therefore, first extensions 111 are provided on both the front and rear sides of the upper core plate 11, and on the lower core plate 12... The front and rear sides of the 2 are provided with second extensions 121. By making the first extension 111 lower than the upper core plate 11 and the second extension 121 higher than the lower core plate 12, a gap is generated between the first core plate 11 and the second core plate 12 when the lower plate surface of the first extension 111 and the upper plate surface of the second extension 121 are attached. At this time, since the first extension 111 and the second extension 121 are attached, the high temperature fluid cannot overflow from the front and rear sides of the inner channel layer 1, thereby eliminating the need for the installation of the seal, improving the assembly efficiency of the cooler and reducing the production cost of the cooler.

[0099] When assembling this passive cooler, the use of a fitting method between the first extension 111 and the second extension 121 eliminates the need for front and rear side seals, reducing the contact area between the left and right sides and the end cap. This results in weak brazing between the end cap and the cooler core. Therefore, inserts are typically placed above the first extension 111 and below the second extension 121 to increase the contact area between the end cap and the left and right sides of the cooler core, creating a more stable structure. However, the cooler core consists of several inner channel layers 1. Adding a single insert above the first extension 111 and below the second extension 121 in each inner channel layer 1 would lead to… The heat exchanger assembly process is time-consuming and inefficient. To address this issue, the seal 22 of the outer channel layer 2 is improved. Specifically, two third extensions 221 are provided at the top of the seal 22, located on the front and rear sides of the seal 22 respectively. The third extensions 221 are attached to the lower surface of the second extension 121, acting as inserts below the second extension 121 to fill the gap between the second extension 121 and the seal 22. Two fourth extensions 222 are provided at the bottom of the seal 22, located on the front and rear sides of the seal 22 respectively. The fourth extensions 222 are attached to the first extension... The upper surfaces of the first extension 111 and the second extension 121 are attached to each other. The fourth extension 222 is equivalent to an insert above the first extension 111, used to fill the gap between the first extension 111 and the seal 22. By integrating the third extension 221 and the fourth extension 222 onto the seal 22, that is, integrating the insert onto the seal 22, the number of inserts can be effectively reduced. Only the seal 22 needs to be assembled to fill the gap between the seal 22 and the first extension 111 and the second extension 121, thereby reducing the time required to place the insert and improving assembly efficiency. At the same time, the third extension 221 is attached to the lower surface of the second extension 121 of the upper inner channel layer 1, and the seal... The top of the seal 22 contacts the lower surface of the lower core plate 12. At this time, the seal 22 forms an upward concave shape and the lower core plate 12 forms a downward convex shape, thereby enabling the seal 22 and the lower core plate 12 to be positioned and assembled, preventing the lower core plate 12 from shifting back and forth during installation and improving the assembly efficiency of the cooler; the fourth extension 222 is attached to the upper surface of the first extension 111 of the next inner channel layer 1, and the bottom of the seal 22 contacts the upper surface of the upper core plate 11. At this time, the seal 22 forms a downward concave shape and the upper core plate 11 forms an upward convex shape, thereby enabling the seal 22 and the upper core plate 11 to be positioned and assembled, preventing the upper core plate 11 from shifting back and forth during installation and improving the assembly efficiency of the cooler;

[0100] In existing technologies, during assembly, inserts of a certain thickness are typically added to the top of the first boss and the bottom of the second boss to increase the brazing area between the heat exchanger core and the end cap. However, the heat exchanger core is composed of several inner fin layers. Adding inserts to the top of the first boss and the bottom of the second boss in each inner fin layer would result in long assembly time and low assembly efficiency. The passive cooler provided in Embodiment 2 of this utility model reduces the number of inserts by integrating the third extension 221 and the fourth extension 222 onto the seal 22, thereby reducing the time required for insert placement. Furthermore, the seal 22 with the third extension 221 and the fourth extension 222 can provide front and rear positioning for the core plate, facilitating positioning and installation. This reduces the time cost required for assemblers to position and align the inner channel layers 1 and outer channel layers 2 in the cooler core, thereby improving the assembly efficiency of the cooler.

[0101] The passive cooler provided in Embodiment 2 of this utility model preferably has an outer edge of the first extension 111 that is curved upward and arc-shaped; the left and right ends of the outer edge of the first extension 111 are planar; and the first extension 111 is integrally formed.

[0102] The outer edge of the second extension 121 is curved downwards and is arc-shaped; the left and right ends of the outer edge of the second extension 121 are flat; the second extension 121 is integrally formed.

[0103] During cooler assembly, to prevent high-temperature fluid from overflowing from the gap between the first extension 111 and the second extension 121, it is usually necessary to compress the first extension 111 and the second extension 121 to ensure that there are no gaps between them. However, if too much force is applied during compression, the first extension 111 and the second extension 121 may become stressed and damaged, causing fluid to overflow from the gap between them. Therefore, it is necessary to enhance the strength of the first extension 111 and the second extension 121 to give them good compressive strength. Specifically, the outer edge of the first extension 111 is bent upwards, and the left and right ends of the outer edge of the first extension 111 are flat, while the outer edge of the second extension 121 is bent downwards, and the outer edge of the second extension 121 is flat. The left and right ends of the extension are flat. By setting a structure with a partial bend in the middle and flat sides, when extrusion is applied, the stress between the plates diffuses to the partial bend in the middle. In particular, the bend here is arc-shaped, so that the stress is evenly distributed at the bend, thereby relieving stress concentration and improving the strength of the first extension 111 and the second extension 121. Furthermore, the flat sections on both sides and the bend in the middle are smoothly connected, so that the stress transmitted to the bend in the middle can be distributed to the flat sections on the left and right sides, avoiding stress concentration in the bend in the middle and causing the bend in the middle to bend and bend, reducing the load on the bend in the middle, thereby further improving the strength of the first extension 111 and the second extension 121. The above structure can effectively prevent the first extension 111 and the second extension 121 from being damaged by large extrusion forces, and improve the service life of the cooler.

[0104] It should be noted that the lower surface plane end of the third extension 221 is attached to the lower surface plane end of the second extension 121, and the upper surface plane end of the fourth extension 222 is attached to the upper surface plane end of the first extension 111, thereby avoiding the overlap of the bent portion of the third extension 221 and the first extension 111, and avoiding the overlap of the bent portion of the fourth extension 222 and the second extension 121.

[0105] The passive cooler provided in Embodiment 2 of this utility model preferably has a plurality of downwardly protruding first protrusions 112 on the bottom surface of the upper core plate 11; all the first protrusions 112 are evenly distributed on the upper core plate 11; the top surface of the lower core plate 12 has a plurality of upwardly protruding second protrusions 122; one first protrusion 112 and one second protrusion 122 are arranged facing each other; the first protrusion 112 and the second protrusion 122 are in contact.

[0106] The first protrusion 112 and the second protrusion 122 replace the inner fins, simulating the ability of the inner fins to conduct heat between the upper core plate 11 and the lower core plate 12. By reducing the inner fins, the production cost of the cooler can be reduced, while the assembly time required for the inner fins is reduced, thus improving the assembly efficiency of the cooler.

[0107] When the high-temperature fluid enters the inner channel layer 1, the high-temperature fluid flows in the gap between the first protrusion 112 and exchanges heat through the first protrusion 112 and the second protrusion 122. The heat of the fluid is transferred to the upper core plate 11 and the lower core plate 12 and dissipated through the outer channel layer 1.

[0108] When the fluid flows through the first protrusion 112 and the second protrusion 122 in the inner channel layer 1, it will be blocked by the first protrusion 112 and the second protrusion 122, which will cause the fluid to form turbulence. The fluid comes into contact with multiple first protrusions 112 and second protrusions 122 in the inner channel layer 1, which increases the contact area between the fluid and the heat transfer medium, thereby improving the heat exchange efficiency.

[0109] The passive cooler provided in Embodiment 2 of this utility model is preferably designed to cool the inner channel layer 1 through the outer channel layer 2. In particular, the outer channel layer 2 adopts an air-cooled cooling method. Specifically, the outer channel layer 2 also includes outer fins 21. The outer fins 21 are placed horizontally between two seals 22. The outer fins 21 are placed in the front-back direction and perpendicular to the fluid flow direction. Air flows in the gaps of the outer fins 21. The heat in the inner channel layer 1 is guided from the upper core plate 11 and the lower core plate 12 through the outer fins 21, and the heat on the outer fins 21 is dissipated by the air.

[0110] The top of the outer fin 21 is in contact with the lower plate surface of the lower core plate 12 of the upper inner channel layer 1, and the bottom of the outer fin 21 is in contact with the upper plate surface of the upper core plate 11 of the lower inner channel layer 1, so that the outer fin 21 can directly contact the upper core plate 11 and the lower core plate 12, thereby enhancing the heat conduction effect of the outer fin 21 and improving the heat exchange efficiency of the heat exchanger.

[0111] At this time, the top of the seal 22 is sealed and fixed to the lower plate surface of the lower core plate 12 of the upper inner channel layer 1, and the bottom of the seal 22 is sealed and fixed to the upper plate surface of the upper core plate 11 of the lower inner channel layer 1, thereby enhancing the sealing effect of the seal 22 on the outer channel layer 2 and improving the stability of the cooler.

[0112] The passive cooler provided in Embodiment 2 of this utility model preferably has a seal 22 that can be divided into three parts: a seal body 2201, an upper gasket 2202 and a lower gasket 2203, wherein the seal body 2201 has the same structure as the seal in the prior art.

[0113] Specifically, the upper gasket 2202 includes an upper pad 22021 and two third extensions 221; the upper pad 22021 is located above the seal body 2201; the upper pad 22021 is placed in the front-back direction; the two third extensions 221 are located on the upper surface of the upper pad 22021, which is equivalent to connecting the two inserts located below the second extensions 121; the two third extensions 221 are respectively located on the front and rear sides of the upper pad 22021; the third extensions 221 can be formed by bending the front and rear ends of the upper pad 22021 upwards; the upper surface of the upper pad 22021 is in contact with the lower surface of the lower core plate 12;

[0114] The lower pad 2203 includes a lower pad plate 22031 and two fourth extensions 222; the lower pad plate 22031 is located below the seal body 2201; the lower pad plate 22031 is arranged in the front-back direction; the two fourth extensions 222 are located on the lower plate surface of the lower pad plate 22031, which is equivalent to connecting the two inserts located above the first extension 111. The two fourth extensions 222 are respectively located on the front and rear sides of the lower pad plate 22031. The fourth extensions 222 can be formed by bending the front and rear ends of the lower pad plate 22031 downwards; the lower plate surface of the lower pad plate 22031 is in contact with the upper plate surface of the upper core plate 11.

[0115] By connecting and splicing the inserts together, the number of inserts can be reduced, thereby reducing the time cost required to place the inserts and improving assembly efficiency. At the same time, separating the upper gasket 2202 and the lower gasket 2203 from the seal body 2201 can reduce the production difficulty of the irregular seal 22 and reduce production costs.

[0116] Similar to the seal 22 with a third extension 221 and a fourth extension 222, the third extension 221 on the upper gasket 2202 contacts the lower surface plane end of the second extension 121, and when the upper plate surface of the upper pad 22021 on the upper gasket 2202 contacts the lower plate surface of the lower core plate 12, the upper gasket 2202 forms an upwardly concave shape and the lower core plate 12 forms a downwardly convex shape, so that the upper gasket 2202 can be positioned and assembled with the lower core plate 12, preventing the lower core plate 12 from being damaged during installation. The front-to-back offset improves the assembly efficiency of the cooler; the fourth extension 222 on the lower shim 2203 contacts the upper surface plane end of the first extension 111, and the lower plate surface of the lower shim 22031 on the lower shim 2203 contacts the upper plate surface of the upper core plate 11. The lower shim 2203 is concave and the upper core plate 11 is convex, so that the lower shim 2203 can be positioned and assembled with the upper core plate 11, preventing the upper core plate 11 from shifting back and forth during installation and improving the assembly efficiency of the cooler.

[0117] It should be noted that, in order to fill the gap and improve the weld strength by using the upper shim 2202 and the lower shim 2203, the surfaces of both the upper shim 2202 and the lower shim 2203 are coated with brazing filler metal.

[0118] The passive cooler provided in Embodiment 2 of this utility model preferably has a seal 22 divided into three parts: seal body 2201, upper gasket 2202 and lower gasket 2203. This makes the seal 22 not a whole, which causes the seal body 2201 to be unable to be positioned during installation. To solve this problem, a second limiting groove 223 is provided at the top and bottom of the seal body 2201.

[0119] When the lower surface of the upper pad 22021 contacts the top of the sealing body 2201 of the next outer channel layer 2, the upper pad 22021 is located in the second limiting groove 223, so that the sealing body 2201 of the next outer channel layer 2 limits the position of the upper pad 22021 in the left and right directions; thereby realizing the positioning and assembly between the sealing body 2201, the upper pad 2202 and the lower core plate 12, and improving the assembly efficiency of the cooler;

[0120] When the upper surface of the lower pad 22031 contacts the bottom of the sealing body 2201 of the upper outer channel layer 2, the lower pad 22031 is located in the second limiting groove 223, so that the sealing body 2201 of the upper outer channel layer 2 limits the position of the lower pad 22031 in the left and right directions; thereby realizing the positioning and assembly between the sealing body 2201, the lower pad 2203 and the upper core plate 11, and improving the assembly efficiency of the cooler.

[0121] The passive cooler provided in Embodiment 2 of this utility model is preferably an outer channel layer 2 at both the top and bottom. The outer channel layer 2 at the top of the passive cooler is designated as the first outer channel layer 201, and the outer channel layer 2 at the bottom of the passive cooler is designated as the second outer channel layer 202.

[0122] In order to make the first outer channel layer 201 and the second outer channel layer 202 form a complete flow channel, an upper partition 31 and a lower partition 32 are also included; the upper partition 31 covers the top of the first outer channel layer 201; the lower partition 32 covers the bottom of the second outer channel layer 202.

[0123] The lower surface of the upper partition 31 contacts the top of the outer fin 21 of the first outer channel layer 201 to prevent the outer fin 21 in the first outer channel layer 201 from becoming loose; the upper surface of the lower partition 32 contacts the bottom of the outer fin 21 of the second outer channel layer 202 to prevent the outer fin 21 in the second outer channel layer 202 from becoming loose.

[0124] Because the top and bottom of the sealing strip body 2201 are provided with second limiting grooves 223, fluid may enter the second limiting grooves 223, affecting the welding stability between the upper partition plate 31, the lower partition plate 32 and the sealing head body 2201. Therefore, it is necessary to seal and fix the upper partition plate 31 to the top of the sealing strip body 2201 of the first outer channel layer 201, and the lower partition plate 32 to the bottom of the sealing strip body 2201 of the second outer channel layer 202. Specifically, an upper gasket 2202 is placed in the second limiting groove 223 at the top of the sealing strip body 2201 of the first outer channel layer 201, and a lower gasket 2202 is placed in the second limiting groove 223 at the top of the sealing strip body 2201 of the second outer channel layer 202. A lower gasket 2203 is placed in the second limiting groove 223 at the bottom of the seal 22, and mating holes 301 are provided on the four corners of the upper partition 31 and the lower partition 32. When the upper partition 31 is placed on the upper gasket 2202, the third extension 221 extends into the mating hole 301 and abuts against the edge of the mating hole 301 of the upper partition 31, thereby preventing a gap between the upper partition 31 and the seal body 2201. When the lower partition 32 is placed on the lower gasket 2203, the fourth extension 222 extends into the mating hole 301 and abuts against the edge of the mating hole 301, thereby preventing a gap between the lower partition 32 and the seal body 2201.

[0125] The passive cooler provided in Embodiment 2 of this utility model preferably further includes an upper cover plate 41 and a lower cover plate 42. The upper cover plate 41 covers the upper surface of the upper partition plate 31 and is in contact with the upper surface of the upper partition plate 31 and the third extension 221 at the top of the upper gasket 2202. The lower cover plate 42 covers the lower surface of the lower partition plate 32 and is in contact with the lower surface of the lower partition plate 32 and the fourth extension 222 at the bottom of the lower gasket 2203. The upper cover plate 41 can prevent the first outer channel layer 201 from directly colliding with external objects, and the lower cover plate 42 can prevent the second outer channel layer 202 from directly colliding with external objects, thereby reducing the risk of damage caused by the cooler core colliding with external objects and extending the service life of the cooler.

[0126] The passive cooler provided in Embodiment 2 of this utility model preferably further includes an inlet cap 51 and an outlet cap 52; the inlet cap 51 has an inlet 511 for introducing high-temperature fluid into the inner channel layer 1; the outlet cap 52 has an outlet 521 for discharging the cooled fluid out of the inner channel layer 1; a plurality of inner channel layers 1 and a plurality of outer channel layers 2 alternately constitute the cooler core, and the inlet cap 51 and the outlet cap 52 are respectively disposed on the left and right sides of the cooler core.

[0127] The passive cooler provided in Embodiment 2 of this utility model preferably further reduces the production cost of the cooler by forming the first protrusion 112 and the second protrusion 122 by embossing. The top of the first protrusion 112 is provided with a first intaglio 113 with the same outline as the first protrusion 112, and the bottom of the second protrusion 122 is provided with a second intaglio 123 with the same outline as the second protrusion 122. This reduces the amount of material used in the preparation of the upper core plate 11 and the lower core plate 12. At the same time, the use of thinner materials for the first protrusion 112 and the second protrusion 122 can reduce the heat transfer time and improve the heat exchange efficiency of the heat exchanger.

[0128] Example 3:

[0129] like Figures 12-14 As shown, the passive cooler provided in Embodiment 3 of this utility model includes a plurality of inner channel layers 1 and a plurality of outer channel layers 2; the inner channel layers 1 and the outer channel layers 2 are alternately arranged;

[0130] The inner channel layer 1 includes an upper core plate 11 and a lower core plate 12; the upper core plate 11 and the lower core plate 12 are arranged horizontally;

[0131] The upper core board 11 is provided with a first extension 111 on both the front and rear sides; the first extension 111 is plate-shaped; the first extension 111 is horizontally arranged; the first extension 111 extends in the left and right direction; in the left and right direction, the length of the first extension 111 is equal to the length of the upper core board 11; the first extension 111 is lower than the upper core board 11; the side closer to the upper core board 11 is taken as the inner side, and the inner edge of the first extension 111 is connected to the outer edge of the upper core board 11.

[0132] The lower core plate 12 is provided with a second extension 121 on both the front and rear sides; the second extension 121 is plate-shaped; the second extension 121 is horizontally arranged; the second extension 121 extends in the left and right direction; in the left and right direction, the length of the second extension 121 is equal to the length of the lower core plate 12; the second extension 121 is higher than the lower core plate 12; the inner edge of the second extension 121 is connected to the outer edge of the lower core plate 12.

[0133] The lower plate surface of the first extension 111 is in contact with the upper plate surface of the second extension 121; there is a space for fluid flow between the first core plate 11 and the second core plate 12.

[0134] The outer channel layer 2 includes two seals 22; the two seals 22 are respectively disposed on the left and right sides; the seals 22 are placed in the front-back direction; the top of the seals 22 is in contact with the lower plate surface of the lower core plate 12 of the upper inner channel layer 1; the bottom of the seals 22 is in contact with the upper plate surface of the upper core plate 11 of the lower inner channel layer 1.

[0135] It also includes several fastening components 6; the fastening components 6 include two fasteners 61; the two fasteners 61 are located on the front and rear sides of the inner channel layer 1 respectively; the fasteners 61 include an upper insert plate 611, a lower insert plate 612 and a connecting plate 613; the connecting plate 613 is fixedly connected to the upper insert plate 611 and the lower insert plate 612; the lower plate surface of the upper insert plate 611 is in contact with the upper surface of the first extension 111; the upper plate surface of the lower insert plate 612 is in contact with the lower surface of the second extension 121; the connecting plate 613 is adjacent to the outer edge of the first extension 111; the upper plate surface of the upper insert plate 611 is in contact with the bottom of the seal 22 of the upper outer channel layer 2, and the lower plate surface of the lower insert plate 612 is in contact with the top of the seal 22 of the lower outer channel layer 2.

[0136] When using the passive cooler provided in Embodiment 3 of this utility model, air flows as a cooling medium in the outer channel layer 2; high-temperature fluid flows in the inner channel layer 1, specifically in the space between the first core plate 11 and the second core plate 12; by placing fins or other heat-conducting media between the first core plate 11 and the second core plate 12, the heat exchange efficiency between the high-temperature fluid and the cold air is accelerated, and the heat of the high-temperature fluid is transferred to the upper core plate 11 and the lower core plate 12, and dissipated through the outer channel layer 1.

[0137] The passive cooler provided in Embodiment 3 of this utility model includes an inner channel layer 1, which includes an upper core plate 11 and a lower core plate 12, forming a channel for the flow of high-temperature fluid. Specifically, to prevent high-temperature fluid from overflowing from the inner channel layer 1, two sealing strips are usually provided between the upper core plate 11 and the lower core plate 12. However, using sealing strips to seal the upper core plate 11 and the lower core plate 12 requires more cost during cooler assembly and reduces the assembly efficiency of the cooler. Therefore, first extensions 111 are provided on both the front and rear sides of the upper core plate 11, and on the lower core plate 12... The front and rear sides of the 2 are provided with second extensions 121. By making the first extension 111 lower than the upper core plate 11 and the second extension 121 higher than the lower core plate 12, a gap is generated between the first core plate 11 and the second core plate 12 when the lower plate surface of the first extension 111 and the upper plate surface of the second extension 121 are attached. At this time, since the first extension 111 and the second extension 121 are attached, the high temperature fluid cannot overflow from the front and rear sides of the inner channel layer 1, thereby eliminating the need for the installation of the seal, improving the assembly efficiency of the cooler and reducing the production cost of the cooler.

[0138] When assembling this passive cooler, the use of front and rear side seals is eliminated by attaching the first extension 111 and the second extension 121 together, reducing the contact area between the left and right sides and the end cap. This results in weak brazing between the end cap and the cooler core. Therefore, it is common practice to place the insert above the first extension 111 and below the second extension 121 to increase the contact area between the end cap and the left and right sides of the cooler core, forming a more stable structure. However, the cooler core is composed of several inner channel layers 1. If the first extension 111 of each inner channel layer 1... Adding a single insert above the first extension 111 and below the second extension 121 would result in a long assembly time and low assembly efficiency for the heat exchanger. To solve this problem, several fastening components 6 are also included. The fastening components 6 include two fasteners 61, which are located on the front and rear sides of the inner channel layer 1, respectively. The fasteners 61 include an upper insert plate 611, a lower insert plate 612, and a connecting plate 613. The upper insert plate 611 and the lower insert plate 612 are equivalent to the insert plate located above the first extension 111 and the insert plate located below the second extension 121 on one side, respectively, and are used to fill the space between the first extension 111 and the seal 22 on one side. The gap between the upper insert plate 611 and the lower insert plate 612, and the gap between the second extension 121 and the seal 22; the connecting plate 613 fixes the upper insert plate 611 and the lower insert plate 612. By adopting the structure of connecting the upper insert plate 611 and the lower insert plate 612 through the connecting plate 613, the number of insert pieces can be effectively reduced, thereby reducing the time required for insert piece placement and improving assembly efficiency; at the same time, the lower plate surface of the upper insert plate 611 is in contact with the upper surface of the first extension 111, and the upper plate surface of the lower insert plate 612 is in contact with the lower surface of the second extension 121. The connecting plate 613 is adjacent to the outer edge of the first extension 111, so that the upper core plate 11 and the lower extension 22 are in contact with the seal 22. The lower core plate 12 is clamped in the vertical direction by the upper insert plate 611 and the lower insert plate 612, thereby achieving the upper limit positioning of the upper core plate 11 and the lower core plate 12 in the vertical direction by the fastener 61, avoiding the inner channel layer 1 from moving during assembly, and improving the assembly efficiency of the cooler; it should be noted here that the upper plate surface of the upper insert plate 611 is in contact with the bottom of the seal 22 of the upper outer channel layer 2, and the lower plate surface of the lower insert plate 612 is in contact with the top of the seal 22 of the lower outer channel layer 2, thereby filling the gap between the first extension 111 and the seal 22 and the gap between the second extension 121 and the seal 22;

[0139] In existing technologies, during assembly, inserts of a certain thickness are typically added to the top of the first boss and the bottom of the second boss to increase the brazing area between the heat exchanger core and the end cap. However, the heat exchanger core is composed of several inner fin layers. Adding inserts to the top of the first boss and the bottom of the second boss in each inner fin layer would result in a long assembly time and low assembly efficiency. The passive cooler provided in Embodiment 3 of this utility model connects the upper insert plate 611 and the lower insert plate 612 through the connecting plate 613, reducing the number of inserts required and thus reducing the time required to place the inserts. Furthermore, the upper insert plate 611 and the lower insert plate 612 can provide upper and lower limits for the core plate, preventing the inner channel layer 1 from shifting during assembly. This reduces the time cost for assemblers to assemble each inner channel layer 1 in the cooler core, thereby improving the assembly efficiency of the cooler.

[0140] The passive cooler provided in Embodiment 3 of this utility model preferably has a design where the upper insert plate 611 and the lower insert plate 612 only limit the upper and lower positions of the core plate, making it easy for the core plate to slide in the horizontal direction, resulting in low assembly efficiency for the assembler. To further improve the assembly efficiency of the cooler, a first limiting groove 610 is provided on the lower surface of the upper insert plate 611 and the upper surface of the lower insert plate 612, extending to the edge in the left-right direction. A limiting protrusion 102 is provided on the upper surface of the first extension 111 and the lower surface of the second extension 121. When the fastener 61 is fitted onto the first extension 112 and the second extension 122 in the left-right direction, the limiting protrusion 102 slides into the first limiting groove 610, thereby preventing the upper core plate 11 or the lower core plate 12 from sliding backwards and forwards, and further improving the assembly efficiency of the cooler.

[0141] The passive cooler provided in Embodiment 3 of this utility model preferably has an outer edge of the first extension 111 that is curved upward and arc-shaped; the left and right ends of the outer edge of the first extension 111 are planar; and the first extension 111 is integrally formed.

[0142] The outer edge of the second extension 121 is curved downwards and is arc-shaped; the left and right ends of the outer edge of the second extension 121 are flat; the second extension 121 is integrally formed.

[0143] During cooler assembly, to prevent high-temperature fluid from overflowing from the gap between the first extension 111 and the second extension 121, it is usually necessary to compress the first extension 111 and the second extension 121 to ensure that there are no gaps between them. However, if too much force is applied during compression, the first extension 111 and the second extension 121 may become stressed and damaged, causing fluid to overflow from the gap between them. Therefore, it is necessary to enhance the strength of the first extension 111 and the second extension 121 to give them good compressive strength. Specifically, the outer edge of the first extension 111 is bent upwards, and the left and right ends of the outer edge of the first extension 111 are flat, while the outer edge of the second extension 121 is bent downwards, and the outer edge of the second extension 121 is flat. The left and right ends of the extension are flat. By setting a structure with a partial bend in the middle and flat sides, when extrusion is applied, the stress between the plates diffuses to the partial bend in the middle. In particular, the bend here is arc-shaped, so that the stress is evenly distributed at the bend, thereby relieving stress concentration and improving the strength of the first extension 111 and the second extension 121. Furthermore, the flat sections on both sides and the bend in the middle are smoothly connected, so that the stress transmitted to the bend in the middle can be distributed to the flat sections on the left and right sides, avoiding stress concentration in the bend in the middle and causing the bend in the middle to bend and bend, reducing the load on the bend in the middle, thereby further improving the strength of the first extension 111 and the second extension 121. The above structure can effectively prevent the first extension 111 and the second extension 121 from being damaged by large extrusion forces, and improve the service life of the cooler.

[0144] It should be noted that the limiting protrusion 102 is located at the upper surface plane end of the first extension 111 and the lower surface plane end of the second extension 121.

[0145] The passive cooler provided in Embodiment 3 of this utility model preferably has a plurality of downwardly protruding first protrusions 112 on the bottom surface of the upper core plate 11; all the first protrusions 112 are evenly distributed on the upper core plate 11; the top surface of the lower core plate 12 has a plurality of upwardly protruding second protrusions 122; one first protrusion 112 and one second protrusion 122 are arranged facing each other; the first protrusion 112 and the second protrusion 122 are in contact.

[0146] The first protrusion 112 and the second protrusion 122 replace the inner fins, simulating the ability of the inner fins to conduct heat between the upper core plate 11 and the lower core plate 12. By reducing the inner fins, the production cost of the cooler can be reduced, while the assembly time required for the inner fins is reduced, thus improving the assembly efficiency of the cooler.

[0147] When the high-temperature fluid enters the inner channel layer 1, the high-temperature fluid flows in the gap between the first protrusion 112 and exchanges heat through the first protrusion 112 and the second protrusion 122. The heat of the fluid is transferred to the upper core plate 11 and the lower core plate 12 and dissipated through the outer channel layer 1.

[0148] When the fluid flows through the first protrusion 112 and the second protrusion 122 in the inner channel layer 1, it will be blocked by the first protrusion 112 and the second protrusion 122, which will cause the fluid to form turbulence. The fluid comes into contact with multiple first protrusions 112 and second protrusions 122 in the inner channel layer 1, which increases the contact area between the fluid and the heat transfer medium, thereby improving the heat exchange efficiency.

[0149] The passive cooler provided in Embodiment 3 of this utility model is preferably designed to cool the inner channel layer 1 through the outer channel layer 2. Specifically, the outer channel layer 2 adopts an air-cooled cooling method. In particular, the outer channel layer 2 also includes an outer fin 21. The outer fin 21 is placed horizontally between two seals 22. The outer fin 21 is placed along the front-back direction and perpendicular to the fluid flow direction. Air flows in the gaps of the outer fin 21. The heat in the inner channel layer 1 is guided from the upper core plate 11 and the lower core plate 12 through the outer fin 21, and the heat on the outer fin 21 is dissipated by the air.

[0150] The top of the outer fin 21 is in contact with the lower plate surface of the lower core plate 12 of the upper inner channel layer 1, and the bottom of the outer fin 21 is in contact with the upper plate surface of the upper core plate 11 of the lower inner channel layer 1, so that the outer fin 21 can directly contact the upper core plate 11 and the lower core plate 12, thereby enhancing the heat conduction effect of the outer fin 21 and improving the heat exchange efficiency of the heat exchanger.

[0151] At this time, the top of the seal 22 is sealed and fixed to the lower plate surface of the lower core plate 12 of the upper inner channel layer 1, and the bottom of the seal 22 is sealed and fixed to the upper plate surface of the upper core plate 11 of the lower inner channel layer 1, thereby enhancing the sealing effect of the seal 22 on the outer channel layer 2 and improving the stability of the cooler.

[0152] The passive cooler provided in Embodiment 3 of this utility model is preferably provided in that both the top and bottom of the passive cooler are outer channel layers 2; the outer channel layer 2 located at the top of the passive cooler is designated as the first outer channel layer 201, and the outer channel layer 2 located at the bottom of the passive cooler is designated as the second outer channel layer 202.

[0153] In order to make the first outer channel layer 201 and the second outer channel layer 202 form a complete flow channel, an upper partition 31 and a lower partition 32 are also included; the upper partition 31 covers the top of the first outer channel layer 201; the lower partition 32 covers the bottom of the second outer channel layer 202.

[0154] The lower surface of the upper partition 31 contacts the top of the outer fin 21 of the first outer channel layer 201 to prevent the outer fin 21 in the first outer channel layer 201 from becoming loose; the upper surface of the lower partition 32 contacts the bottom of the outer fin 21 of the second outer channel layer 202 to prevent the outer fin 21 in the second outer channel layer 202 from becoming loose.

[0155] The upper partition 31 is sealed and fixed to the top of the seal 22 of the first outer channel layer 201, and the lower partition 32 is sealed and fixed to the bottom of the seal 22 of the second outer channel layer 202 to prevent fluid from entering the outer channel layer 2.

[0156] The passive cooler provided in Embodiment 3 of this utility model preferably further includes an upper cover plate 41 and a lower cover plate 42; the upper cover plate 41 covers the upper surface of the upper partition plate 31; the lower cover plate 42 covers the lower surface of the lower partition plate 32; the upper cover plate 41 can prevent the first outer channel layer 201 from directly colliding with external objects, and the lower cover plate 42 can prevent the second outer channel layer 202 from directly colliding with external objects, thereby reducing the risk of damage caused by the cooler core colliding with external objects and thus extending the service life of the cooler.

[0157] The passive cooler provided in Embodiment 3 of this utility model preferably further includes an inlet cap 51 and an outlet cap 52; the inlet cap 51 has an inlet 511 for introducing high-temperature fluid into the inner channel layer 1; the outlet cap 52 has an outlet 521 for discharging the cooled fluid out of the inner channel layer 1; a plurality of inner channel layers 1 and a plurality of outer channel layers 2 alternately constitute the cooler core, and the inlet cap 51 and the outlet cap 52 are respectively disposed on the left and right sides of the cooler core.

[0158] The passive cooler provided in Embodiment 3 of this utility model preferably further reduces the production cost of the cooler by forming the first protrusion 112 and the second protrusion 122 by embossing. The top of the first protrusion 112 is provided with a first intaglio 113 with the same outline as the first protrusion 112, and the bottom of the second protrusion 122 is provided with a second intaglio 123 with the same outline as the second protrusion 122. This reduces the amount of material used in the preparation of the upper core plate 11 and the lower core plate 12. At the same time, the use of thinner materials for the first protrusion 112 and the second protrusion 122 can reduce the heat transfer time and improve the heat exchange efficiency of the heat exchanger.

[0159] In summary, the passive cooler provided by this utility model can solve the problem that the existing technology usually uses inserts of a certain thickness at the top of the first boss and the bottom of the second boss to increase the brazing area between the heat exchanger core and the end cap. However, the heat exchanger core is composed of several inner fin layers. If inserts are added at the top of the first boss and the bottom of the second boss of each inner fin layer, it will lead to long assembly time and low assembly efficiency. This invention improves the assembly efficiency of the cooler.

[0160] Those skilled in the art should understand that variations can be implemented by combining existing technology and the above embodiments, and will not be elaborated here. Such variations do not affect the substantive content of this utility model, and will not be elaborated here.

[0161] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a conventional manner in the art; any possible variations and modifications made by those skilled in the art without departing from the technical solution of this utility model, or equivalent embodiments with equivalent changes, do not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the content of the technical solution of this utility model, shall still fall within the protection scope of the technical solution of this utility model.

Claims

1. A passive cooler characterized by, It includes several inner channel layers and several outer channel layers; the inner channel layers and the outer channel layers are alternately arranged; The inner channel layer includes an upper core plate and a lower core plate; the upper core plate and the lower core plate are arranged horizontally; The upper core board is provided with a first extension on both the front and rear sides; the first extension is plate-shaped; the first extension is horizontally arranged; the first extension extends in the left-right direction; in the left-right direction, the length of the first extension is equal to the length of the upper core board; the first extension is lower than the upper core board; the side closer to the upper core board is taken as the inner side, and the inner edge of the first extension is connected to the outer edge of the upper core board. The lower core plate is provided with a second extension on both its front and rear sides; the second extension is plate-shaped; the second extension is horizontally arranged; the second extension extends in the left-right direction; in the left-right direction, the length of the second extension is equal to the length of the lower core plate; the second extension is higher than the lower core plate; the inner edge of the second extension is connected to the outer edge of the lower core plate. The lower plate surface of the first extension is in contact with the upper plate surface of the second extension; there is a space for fluid flow between the first core plate and the second core plate; The outer channel layer includes two seals; the two seals are respectively disposed on the left and right sides; the seals are placed in the front-back direction; the top of the seal is in contact with the lower plate surface of the lower core plate of the upper inner channel layer; the bottom of the seal is in contact with the upper plate surface of the upper core plate of the lower inner channel layer. The top of the seal has two third extensions; the two third extensions are located on the front and rear sides of the seal respectively; the third extensions are in contact with the lower surface of the second extension; the bottom of the seal has two fourth extensions; the two fourth extensions are located on the front and rear sides of the seal respectively; the fourth extensions are in contact with the upper surface of the first extension.

2. The passive cooler of claim 1, wherein, The outer edge of the first extension is curved upward and has an arc shape; the left and right ends of the outer edge of the first extension are flat; the first extension is integrally formed. The outer edge of the second extension curves downward in an arc shape; the left and right ends of the outer edge of the second extension are flat; the second extension is integrally formed. The third extension is in contact with the lower surface plane end of the second extension; the fourth extension is in contact with the upper surface plane end of the first extension.

3. The passive cooler of claim 1, wherein, The bottom surface of the upper core plate is provided with a plurality of downwardly protruding first protrusions; all the first protrusions are evenly distributed on the upper core plate; the top surface of the lower core plate is provided with a plurality of upwardly protruding second protrusions; one first protrusion and one second protrusion are arranged facing each other; the first protrusion and the second protrusion are in contact.

4. The passive cooler of claim 2, wherein, The outer channel layer further includes outer fins; the outer fins are placed horizontally; the outer fins are located between the two seals; the outer fins are placed along the front-to-back direction and perpendicular to the fluid flow direction; The top of the outer fin contacts the lower surface of the lower core plate of the upper inner channel layer; the bottom of the outer fin contacts the upper surface of the upper core plate of the lower inner channel layer.

5. The passive cooler of claim 2, wherein, The seal includes a seal body, an upper gasket, and a lower gasket; The upper pad includes an upper pad plate and two third extensions; the upper pad plate is located above the seal body; the upper pad plate is placed in the front-to-back direction; the two third extensions are located on the upper surface of the upper pad plate; the two third extensions are respectively located on the front and rear sides of the upper pad plate; the upper surface of the upper pad plate is in contact with the lower surface of the lower core plate. The lower pad includes a lower pad plate and two fourth extensions; the lower pad plate is located below the seal body; the lower pad plate is arranged in the front-to-back direction; the two fourth extensions are located on the lower surface of the lower pad plate; the two fourth extensions are respectively located on the front and rear sides of the lower pad plate; the lower surface of the lower pad plate is in contact with the upper surface of the upper core plate.

6. The passive cooler of claim 4, wherein, If the top and bottom of the passive cooler are both outer channel layers; the outer channel layer located at the top of the passive cooler is designated as the first outer channel layer, and the outer channel layer located at the bottom of the passive cooler is designated as the second outer channel layer; It also includes an upper partition and a lower partition; the upper partition covers the top of the first outer channel layer; the lower partition covers the bottom of the second outer channel layer; The lower surface of the upper partition plate contacts the top of the outer fin of the first outer channel layer; the upper surface of the lower partition plate contacts the bottom of the outer fin of the second outer channel layer. The upper partition is sealed and fixed to the top of the seal of the first outer channel layer; the lower partition is sealed and fixed to the bottom of the seal of the second outer channel layer.

7. The passive cooler of claim 6, wherein, It also includes an upper cover plate and a lower cover plate; the upper cover plate covers the upper surface of the upper partition plate; the lower cover plate covers the lower surface of the lower partition plate.

8. The passive cooler of claim 1, wherein, It also includes an inlet seal and an outlet seal; the inlet seal has an inlet; the outlet seal has an outlet. The cooler core is composed of several inner channel layers and several outer channel layers alternately, and the water inlet seal and the water outlet seal are respectively arranged on the left and right sides of the cooler core.

9. A passive cooler characterized by, It includes several inner channel layers and several outer channel layers; the inner channel layers and the outer channel layers are alternately arranged; The inner channel layer includes an upper core plate and a lower core plate; the upper core plate and the lower core plate are arranged horizontally; The upper core board is provided with a first extension on both the front and rear sides; the first extension is plate-shaped; the first extension is horizontally arranged; the first extension extends in the left-right direction; in the left-right direction, the length of the first extension is equal to the length of the upper core board; the first extension is lower than the upper core board; the side closer to the upper core board is taken as the inner side, and the inner edge of the first extension is connected to the outer edge of the upper core board. The lower core plate is provided with a second extension on both its front and rear sides; the second extension is plate-shaped; the second extension is horizontally arranged; the second extension extends in the left-right direction; in the left-right direction, the length of the second extension is equal to the length of the lower core plate; the second extension is higher than the lower core plate; the inner edge of the second extension is connected to the outer edge of the lower core plate. The lower plate surface of the first extension is in contact with the upper plate surface of the second extension; there is a space for fluid flow between the first core plate and the second core plate; The outer channel layer includes two seals; the two seals are respectively disposed on the left and right sides; the seals are placed in the front-back direction; the top of the seal is in contact with the lower plate surface of the lower core plate of the upper inner channel layer; the bottom of the seal is in contact with the upper plate surface of the upper core plate of the lower inner channel layer. It also includes several fastening components; each fastening component includes two fasteners; the two fasteners are respectively located on the front and rear sides of the inner channel layer; each fastener includes an upper insert plate, a lower insert plate, and a connecting plate; the connecting plate is fixedly connected to the upper insert plate and the lower insert plate; the lower surface of the upper insert plate is in contact with the upper surface of the first extension; the upper surface of the lower insert plate is in contact with the lower surface of the second extension; the connecting plate is adjacent to the outer edge of the first extension; the upper surface of the upper insert plate is in contact with the bottom of the seal of the upper outer channel layer, and the lower surface of the lower insert plate is in contact with the top of the seal of the lower outer channel layer.

10. The passive cooler of claim 9, wherein, The lower surface of the upper insert plate and the upper surface of the lower insert plate are provided with a first limiting groove; the upper surface of the first extension and the lower surface of the second extension are provided with limiting protrusions; the limiting protrusions are engaged in the first limiting groove.

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