A heat exchanger and chassis

Abstract

This utility model provides a heat exchanger and chassis. The heat exchanger shell divides the internal space of the chassis into a first cavity and a second cavity. The first cavity is used to install the heating module, and the second cavity is used to install heat exchange fins, a hot-end fan, and a cold-end fan. The heat exchange fins divide the second cavity into a non-communicating hot airflow chamber and a cold airflow chamber. The hot airflow chamber is connected to the first cavity, and the cold airflow chamber is connected to the external environment of the chassis. Under the action of the hot-end fan and the cold-end fan, hot air circulates between the first cavity and the hot airflow chamber, and cold air circulates between the external environment of the chassis and the cold airflow chamber, achieving heat exchange on the heat exchange fins. The heat exchange path length is only the wall thickness of the heat exchange fins, resulting in low heat exchange resistance and thus improving heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology, and in particular to a heat exchanger and chassis. Background Technology

[0002] With the development of power electronics technology, the power density of products is constantly increasing, their size is becoming smaller, and their application scenarios in harsh environments are gradually increasing, leading to ever-increasing challenges in thermal management. For example, the chassis typically houses built-in power modules, resistors, and other high-heat-generating components, as well as temperature-sensitive components such as capacitors and batteries. During operation, the chassis needs to dissipate its internal heat in a timely manner to ensure that high-heat-generating components do not overheat, while keeping heat-sensitive components within a safe temperature range.

[0003] Industrial environments are complex, often containing dust particles or high-humidity gases. This requires the chassis to be designed as a highly protective or even sealed cavity to prevent dust, moisture, etc. from entering the cavity and causing short circuits or other problems.

[0004] In related technologies, heat exchangers are usually installed inside the chassis to cool the sealed chassis cavity. This is achieved by using the cold air outside the chassis to exchange heat with the hot air inside the chassis to dissipate heat. However, the heat exchange efficiency is low. How to improve the heat exchange capacity and efficiency of heat exchangers has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide a heat exchanger and chassis to improve heat exchange efficiency. The specific technical solution is as follows:

[0006] This application provides a heat exchanger disposed inside a chassis, including a heat exchanger shell, at least one set of heat exchange fins, a hot-end fan, and a cold-end fan. The heat exchanger shell divides the internal space of the chassis into a first cavity and a second cavity. The first cavity is used to install a heating module, and the second cavity is used to install the heat exchange fins, the hot-end fan, and the cold-end fan. The heat exchange fins divide the second cavity into a non-communicating hot airflow cavity and a cold airflow cavity. The hot airflow cavity is connected to the first cavity, and the cold airflow cavity is connected to the external environment of the chassis. The hot-end fan is disposed at the first end of the hot airflow cavity, causing air circulation between the first cavity and the hot airflow cavity to transfer heat from the first cavity to the heat exchange fins. The cold-end fan is disposed on the side of the heat exchange fins near the cold airflow cavity, causing air circulation between the cold airflow cavity and the cold air of the external environment to exhaust heat from the heat exchange fins into the chassis.

[0007] In some embodiments of this application, each group of heat exchange fins is bent into multiple Z-shaped sections arranged in a straight line. The intervals between the multiple protrusions facing the hot airflow cavity form a hot air duct, and the intervals between the multiple protrusions facing the cold airflow cavity form a cold air duct. Hot air in the first cavity enters the hot airflow cavity under the action of the hot-end fan, moves along the hot air duct to the second end of the hot airflow cavity to transfer heat to the heat exchange fins, and then returns to the first cavity. Cold air from the external environment enters the cold airflow cavity under the action of the cold-end fan, moves along the cold air duct, absorbs heat from the heat exchange fins, and then exits the chassis.

[0008] In some embodiments of this application, the heat exchange fins are arranged along the height direction of the chassis, and end caps are provided at their top and bottom ends; the hot-end fan is arranged above the top end cap, forming a hot-end confluence cavity between itself and the end cap; the end cap includes a sealing part and an open part; the sealing part covers multiple protrusions of the heat exchange fins facing the hot air flow cavity, for sealing the cold air duct; the open part corresponds to multiple protrusions of the heat exchange fins facing the cold air flow cavity, so that the hot air flow cavity communicates with the hot-end confluence cavity.

[0009] In some embodiments of this application, an air inlet and an air outlet are provided on the side wall of the chassis corresponding to the area of ​​the cold airflow cavity; the cold airflow cavity is divided into a cold end confluence cavity and a cold end split cavity; the cold end confluence cavity is connected to the air inlet, and the cold end split cavity is connected to the air outlet; the cold end fan is installed in the cold end confluence cavity so that cold air from the external environment enters the cold end confluence cavity from the air inlet under the action of the cold end fan, moves along the cold air duct to the cold end split cavity, and then exits the chassis from the air outlet.

[0010] In some embodiments of this application, there are multiple cold end distribution cavities and multiple air outlets connected to the cold end distribution cavities; after the cold air from the external environment enters the cold end junction cavity, it can disperse along the cold air duct and move toward the multiple cold end distribution cavities, and then be discharged from the chassis from the multiple air outlets.

[0011] In some embodiments of this application, the heat exchanger includes two sets of heat exchange fins; the heat exchanger housing includes a connecting wall plate; the two sets of heat exchange fins are arranged at intervals relative to each other in the horizontal direction and connected on both sides by the connecting wall plate; the internal space enclosed by the two sets of heat exchange fins and the connecting wall plate forms the hot air flow cavity.

[0012] In some embodiments of this application, the heat exchanger is installed on the first side wall of the chassis; the heat exchanger housing includes two cold end isolation frames; the two cold end isolation frames are symmetrically arranged on the outer sides of the two sets of heat exchange fins; each cold end isolation frame, together with the internal space enclosed by the set of heat dissipation fins and the first side wall, forms a cold airflow cavity.

[0013] In some embodiments of this application, the heat exchanger is installed on the first side wall of the chassis; the heat exchanger housing extends from the second side wall of the chassis to the third side wall; both the second and third side walls are adjacent to the first side wall (101); the space enclosed by the heat exchanger housing and the first, second, and third side walls forms the second cavity; both sides of each set of heat exchange fins are respectively connected to the heat exchanger housing and the first side wall; the internal space enclosed between the heat exchange fins and the second side wall and between the heat exchange fins and the third side wall forms the cold airflow cavity; the air inlet and air outlet are provided on both the second and third side walls.

[0014] In some embodiments of this application, the heat exchanger further includes: a guide plate; the guide plate is inclinedly disposed below the bottom end cap of the heat exchange fins, with the side closer to the heating module inclined downward; the hot air in the first cavity moves along the hot air duct to the bottom end of the heat exchange fins, then converges at the bottom end cap of the heat exchange fins, and returns to the first cavity along the direction of the guide plate.

[0015] In some embodiments of this application, the heat exchanger is installed on the first side wall of the chassis; the heat exchanger housing extends from the second side wall of the chassis to the third side wall; both the second and third side walls are adjacent to the first side wall; the space enclosed by the heat exchanger housing and the first, second, and third side walls forms the second cavity; the heat exchanger includes multiple sets of spaced heat exchange fins, each set of heat exchange fins having its two sides connected to the heat exchanger housing and the first side wall respectively; the multiple sets of heat exchange fins divide the second cavity into alternating hot airflow chambers and cold airflow chambers; of the multiple sets of heat exchange fins, the two outermost heat exchange fins are in contact with the second and third side walls respectively; the second and third side walls have through holes so that the two outermost heat exchange fins can contact the external environment of the chassis through the through holes.

[0016] In some embodiments of this application, the heat exchanger includes: a fan mounting cover; the fan mounting cover is disposed on the top of the plurality of heat exchange fins, and the fan mounting cover has alternately formed hot-end manifolds and cold-end manifolds that are not interconnected; the hot-end manifolds open towards the first cavity and communicate with the hot airflow cavity; the cold-end manifolds open towards the first sidewall and communicate with the air inlet on the first sidewall and the cold airflow cavity located between adjacent heat exchange fins; the hot-end fan is disposed in the hot-end manifold, and the cold-end fan is disposed in the cold-end manifold.

[0017] In some embodiments of this application, end caps are provided at the top and bottom of the multiple sets of heat exchange fins; the end caps include a sealing part and an opening part; the sealing part located below the hot end fan covers multiple protrusions of adjacent heat exchange fins facing the hot air flow cavity, and is used to seal the cold air duct; the sealing part located below the cold end fan covers multiple protrusions of adjacent heat exchange fins facing the cold air flow cavity, and is used to seal the hot air duct.

[0018] In some embodiments of this application, the heat exchanger includes: a flow guide shroud; the flow guide shroud is disposed at the bottom of the plurality of heat exchange fins, and the flow guide shroud has alternately formed hot-end flow diversion cavities and cold-end flow diversion cavities that are not interconnected; the opening of the hot-end flow diversion cavity faces the first cavity and communicates with the hot air flow cavity; the opening of the cold-end flow diversion cavity faces the first sidewall and communicates with the air outlet on the first sidewall and the cold air flow cavity located between adjacent heat exchange fins.

[0019] In some embodiments of this application, the two outermost heat exchange fins in the plurality of heat exchange fins are provided with an adsorption-desorption coating on the side that is in contact with the external environment of the chassis. This coating is used to absorb heat from the heat exchange fins by decomposing water during the heating process of the chassis, and to adsorb water vapor from the external environment when the chassis is in a low power consumption state.

[0020] This application also provides a chassis, including: a shell, a heating module, and a heat exchanger as described in any of the above embodiments.

[0021] Beneficial effects:

[0022] The heat exchanger provided in this embodiment divides the internal space of the chassis into a first cavity and a second cavity via its outer shell. Heat exchange fins further divide the second cavity into a non-communicating hot airflow cavity and a cold airflow cavity. Under the action of hot-end and cold-end fans, hot air circulates between the first cavity and the hot airflow cavity, while cold air circulates between the external environment of the chassis and the cold airflow cavity, achieving heat exchange on the heat exchange fins. The heat exchange path length is only the wall thickness of the heat exchange fins, resulting in low heat exchange resistance and thus improved heat exchange efficiency.

[0023] In addition, the first cavity is only connected to the hot airflow cavity, while the hot airflow cavity and the cold airflow cavity are not connected to each other, so that the hot and cold airflows are isolated from each other and will not come into direct contact. This can protect the heating module in the first cavity from short circuits caused by pollutants such as dust and water vapor in the external environment.

[0024] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0026] Figure 1 A perspective view of the chassis provided in the first embodiment of this application;

[0027] Figure 2 for Figure 1 The top-view perspective view of the chassis shown;

[0028] Figure 3 for Figure 2 A three-dimensional structural diagram of the heat exchanger from the first angle;

[0029] Figure 4 for Figure 2 A three-dimensional structural diagram of the heat exchanger from a second angle;

[0030] Figure 5 for Figure 4 The diagram shows the three-dimensional structure of the heat exchanger after removing the heat exchanger casing.

[0031] Figure 6 for Figure 1 The diagram shows the AA cross-section of the chassis.

[0032] Figure 7 for Figure 6 The diagram shows the BB cross-section of the chassis.

[0033] Figure 8 for Figure 7 A magnified view of a portion of region A shown below;

[0034] Figure 9 A perspective view of the chassis provided in the second embodiment of this application;

[0035] Figure 10 for Figure 9 The top-view perspective view of the chassis shown;

[0036] Figure 11 for Figure 10 A three-dimensional structural diagram of the heat exchanger shown.

[0037] Figure 12 for Figure 9 The diagram shows the AA cross-section of the chassis.

[0038] Figure 13 for Figure 10 The diagram shows the BB cross-section of the chassis.

[0039] Figure 14 A perspective view of the chassis provided in the third embodiment of this application;

[0040] Figure 15 for Figure 14 The top-view perspective view of the chassis shown;

[0041] Figure 16 for Figure 15 A three-dimensional structural diagram of the heat exchanger from the first angle;

[0042] Figure 17 for Figure 15 A three-dimensional structural diagram of the heat exchanger from a second angle;

[0043] Figure 18 for Figure 17 A plan perspective view of the heat exchanger shown.

[0044] Figure 19 for Figure 15 The diagram shows the AA cross-section of the chassis.

[0045] Figure 20 for Figure 19 A magnified view of a portion of region A shown below;

[0046] Figure 21 for Figure 15 The diagram shows the BB cross-section of the chassis.

[0047] Figure 22 for Figure 21 A magnified view of a portion of region A shown below;

[0048] Figure 23 for Figure 21 The diagram shows the EE cross-section of the heat exchanger.

[0049] Figure 24 for Figure 18 The diagram shows the CC cross-section of the heat exchanger.

[0050] Figure 25 for Figure 18 The diagram shows the DD cross-section of the heat exchanger.

[0051] Figure 26 for Figure 25 A magnified view of a portion of region A shown.

[0052] Figure label:

[0053] Chassis 10; Housing 100; First sidewall 101; Second sidewall 102; Third sidewall 103; Fourth sidewall 104; First cavity 110; Second cavity 120; Hot airflow cavity 121; Hot air duct 1211; Hot end junction cavity 1212; Hot end branch cavity 1213; Cold airflow cavity 122; Cold air duct 1221; Cold end junction cavity 1222; Cold end branch cavity 1223; Air inlet 130; Air outlet 140;

[0054] Heat exchanger 200; heat exchanger housing 210; connecting wall panel 211; cold end isolation frame 212; partition 213; heat exchange fins 220; first heat exchange fin 220A; second heat exchange fin 220B; third heat exchange fin 220C; fourth heat exchange fin 220D; adsorption / desorption coating 221; hot end fan 230; cold end fan 240; end cover 250; sealing part 251; opening part 252; guide plate 260; fan mounting cover 270; guide shroud 280;

[0055] Heating module 300. Detailed Implementation

[0056] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art based on this application are within the protection scope of the present utility model.

[0057] As mentioned in the background section, with the development of power electronics technology, the power density of products is constantly increasing, their size is becoming smaller, and their application scenarios in harsh environments are gradually increasing, leading to ever-increasing challenges in thermal management. For example, the chassis typically houses built-in power modules, resistors, and other high-heat-generating components, as well as temperature-sensitive components such as capacitors and batteries. During operation, the chassis needs to dissipate its internal heat in a timely manner to ensure that the high-heat-generating components do not overheat, while keeping the temperature-sensitive components within a safe temperature range.

[0058] Industrial environments are complex, often containing dust particles or high-humidity gases. This requires the chassis to be designed as a highly protective or even sealed cavity to prevent dust, moisture, etc. from entering the cavity and causing short circuits or other problems.

[0059] In related technologies, heat exchangers are usually installed inside the chassis to cool the sealed chassis cavity. This is achieved by using the cold air outside the chassis to exchange heat with the hot air inside the chassis to dissipate heat. However, the heat exchange efficiency is low. How to improve the heat exchange capacity and efficiency of heat exchangers has become a technical problem that urgently needs to be solved by those skilled in the art.

[0060] To improve heat exchange efficiency, this application provides a heat exchanger and a chassis. First, the heat exchanger provided in this application will be described in detail.

[0061] See Figures 1 to 3 , Figure 1 A perspective view of the chassis provided in the first embodiment of this application; Figure 2 for Figure 1 The top-view perspective view of the chassis shown; Figure 3 for Figure 2 The diagram shows a three-dimensional view of the heat exchanger from a first angle. To facilitate the description of the hot and cold airflows, single arrows indicate the direction of the cold airflow, double arrows indicate the direction of the hot airflow, dashed lines represent the effect of transmitted gas flow, and solid lines represent the effect of gas flow at the current cross-section.

[0062] like Figures 1 to 3 As shown, the heat exchanger 200 provided in this embodiment is disposed inside the chassis 10 and includes a heat exchanger housing 210, at least one set of heat exchange fins 220, a hot end fan 230 and a cold end fan 240.

[0063] The heat exchanger housing 210 divides the internal space of the chassis 10 into a first cavity 110 and a second cavity 120. The first cavity 110 is used to install the heating module 300, and the second cavity 120 is used to install the heat exchange fins 220, the hot end fan 230, and the cold end fan 240.

[0064] The heat exchange fins 220 divide the second cavity 120 into a hot airflow cavity 121 and a cold airflow cavity 122 that are not connected to each other; the hot airflow cavity 121 is connected to the first cavity 110, and the cold airflow cavity 122 is connected to the external environment of the chassis 10.

[0065] The hot-end fan 230 is located at the first end of the hot airflow chamber 121, so that the air in the first chamber 110 and the hot airflow chamber 121 form a gas circulation, so as to transfer the heat in the first chamber 110 to the heat exchange fins 220.

[0066] The cold end fan 240 is located on the side of the heat exchange fins 220 close to the cold airflow chamber 122, so that the cold airflow chamber 122 and the cold air of the external environment form a gas circulation, and exhaust the heat on the heat exchange fins 220 to the chassis 10.

[0067] Specifically, such as Figures 1 to 3As shown, the chassis 10 includes a shell 100, which is a cube with four side walls: a first side wall 101, a second side wall 102, a third side wall 103, and a fourth side wall 104. The first side wall 101 and the fourth side wall 104 are parallel and opposite to each other, and the second side wall 102 and the third side wall 103 are parallel and opposite to each other. In this embodiment, the heat exchanger 200 is vertically disposed along the z-direction inside the first side wall 101 of the chassis shell 100. In other embodiments, the heat exchanger 200 may be vertically or horizontally disposed on other single side walls or multiple side walls of the chassis shell 100. The positional relationship between the heat exchanger 200 and the side walls of the shell 100 can be... Figure 2 The close contact shown can also be with a certain gap, as long as the heat exchanger housing 210 can divide the internal space of the chassis 10 into a first cavity 110 and a second cavity 120. This application does not limit the installation position and installation angle of the heat exchanger 200. The embodiment of this application is illustrated by taking the heat exchanger 200 installed on the first side wall 101 as an example.

[0068] When the number of heat exchange fins 220 is one set, the second cavity 120 is divided into two parts: a hot airflow cavity 121 located on one side of the heat exchange fins 220 and a cold airflow cavity 122 located on the other side of the heat exchange fins 220. Furthermore, the heat exchange fins 220 can be arranged as follows: Figure 2 The flow path can be perpendicular to the first sidewall 101 or parallel to the first sidewall 101. When perpendicular to the first sidewall 101, the positions of the hot airflow cavity 121 and the cold airflow cavity 122 are not limited. When parallel to the first sidewall 101, the hot airflow cavity 121 is located on the side of the heat exchange fin 220 away from the first sidewall 101, and the cold airflow cavity 122 is located on the side of the heat exchange fin 220 closer to the first sidewall 101, so that the cold airflow cavity 122 can communicate with the external environment through the first sidewall 101.

[0069] Figure 2 The illustrated embodiment shows two sets of heat exchange fins 220 arranged at relative intervals along the y-direction, with the heat exchange fins 220 perpendicular to the first sidewall 101. The two sets of heat exchange fins 220 divide the second cavity 120 into three parts: a hot airflow cavity 121 located between the two sets of heat exchange fins 220, and two cold airflow cavities located outside the two sets of heat exchange fins.

[0070] It should be noted that the above descriptions of perpendicularity and parallelism are not limited to absolute perpendicularity and parallelism, but may also have a certain deviation angle compared to absolute perpendicularity and parallelism.

[0071] The type of heat exchange fin 220 is not limited in this application; it can be a straight fin, a corrugated fin, etc.

[0072] The connection between the cold airflow cavity 122 and the external environment of the chassis 10 can be as follows: Figure 1and Figure 2 As shown, the heat exchanger 200 is closely attached to the first sidewall 101, and a ventilation hole is provided on the first sidewall 101 at the position corresponding to the cold airflow chamber 122. In other embodiments, when the heat exchanger 200 and the first sidewall 101 are spaced apart, the cold airflow chamber 122 can be connected to the external environment of the chassis 10 through a ventilation duct.

[0073] When the chassis 10 is operating, the heating module 300 generates heat, causing the air in the first cavity 110 to heat up. The hot-end fan 230 draws the high-temperature air from the first cavity 110 into the hot airflow cavity 121. As the high-temperature air flows in the hot airflow cavity 121, most of its heat is transferred to the heat exchange fins 220, turning it into low-temperature air, which then returns to the first cavity 110, thus cooling the first cavity 110. The cold-end fan draws cold air from the external environment of the chassis 10 into the cold airflow cavity 122. As the cold air flows in the cold airflow cavity 122, it absorbs heat from the heat exchange fins 220 and carries the heat out of the chassis 10, thus cooling the heat exchange fins 220. This allows the heat exchange fins 220 to continue absorbing heat from the hot air in the first cavity 110, thereby improving the heat exchange capacity of the heat exchanger 200 and ensuring the durability of the heat exchanger 200's heat exchange.

[0074] In related technologies, heat exchangers include a heat dissipation substrate with heat exchange fins on both sides. One heat exchange fin is located in a first cavity, and the other heat exchange fin is located in a second cavity. Heat inside the first cavity needs to pass through the thick substrate and the heat exchange fins on both sides to enter the second cavity, resulting in a long heat exchange path and thus low heat exchange efficiency.

[0075] The heat exchanger 200 provided in this embodiment divides the internal space of the chassis 10 into a first cavity 110 and a second cavity 120 via its heat exchanger housing 210. Heat exchange fins 220 further divide the second cavity 120 into a non-communicating hot airflow cavity 121 and a cold airflow cavity 122. Under the action of the hot-end fan 230 and the cold-end fan 240, hot air circulates between the first cavity 110 and the hot airflow cavity 121, while cold air circulates between the external environment of the chassis 10 and the cold airflow cavity 122. Heat exchange occurs on the heat exchange fins 220, thereby gradually transferring the heat generated by the heating module 300 to the external environment of the chassis 10 through heat exchange. The heat exchange path length is only the wall thickness of the heat exchange fins 220, thus improving heat exchange efficiency.

[0076] Furthermore, the first cavity 110 is only connected to the hot airflow cavity 121, while the hot airflow cavity 121 and the cold airflow cavity 122 are not connected to each other. The hot and cold airflows only exchange heat, not mass, meaning they are isolated from each other and do not come into direct contact. This protects the heating module 300 inside the first cavity 110 from short circuits caused by dust, moisture, and other contaminants in the external environment, thus ensuring the high IP protection rating of the first cavity 110. The IP protection rating is used to evaluate the dustproof, waterproof, and impact-resistant capabilities of electrical equipment, electronic equipment, and packaging.

[0077] Figure 1 In the illustrated embodiment, see Figure 4 and Figure 5 , Figure 4 for Figure 2 A three-dimensional structural diagram of the heat exchanger from a second angle; Figure 5 for Figure 4 The diagram shows the three-dimensional structure of the heat exchanger after removing the heat exchanger casing. Figures 2 to 5 As shown, the heat exchanger 200 includes two sets of heat exchange fins 220; the heat exchanger housing 210 includes a connecting wall plate 211.

[0078] Two sets of heat exchange fins 220 are arranged at intervals relative to each other in the horizontal direction and connected on both sides by connecting wall plates 211; the internal space enclosed by the two sets of heat exchange fins 220 and the connecting wall plates 211 forms the hot air flow cavity 121.

[0079] Specifically, in this embodiment, as Figure 2 As shown, both sets of heat exchange fins 220 are perpendicular to the first sidewall 101, as... Figures 3 to 5 As shown, the ends of the two sets of heat exchange fins 220 near the first sidewall 101 are connected by a connecting wall plate 211, and the ends away from the first sidewall 101 are also connected by a connecting wall plate 211. In other embodiments, the connecting wall plate 211 at the end of the heat exchange fins 220 near the first sidewall 101 can be omitted, and the heat exchange fins 220 can be directly connected to the first sidewall 101.

[0080] By applying the embodiments of this application, a connecting wall plate 211 is provided so that the hot airflow cavity 121 formed by the two sets of heat exchange fins 220 and the connecting wall plate 211 is not connected to the cold airflow cavity 122, thereby achieving isolation between the cold and hot airflows and protecting the heating module 300 in the first cavity 110 from short circuits caused by pollutants such as dust and water vapor in the external environment.

[0081] Figure 1 In the illustrated embodiments, as Figures 2 to 4 As shown, the heat exchanger 200 is mounted on the first side wall 101 of the chassis 10; the heat exchanger housing 210 includes two cold end isolation frames 212.

[0082] Two cold end isolation frames 212 are symmetrically arranged on the outer sides of the two sets of heat exchange fins 220; each cold end isolation frame 212, together with a set of heat dissipation fins 220 and the first side wall 101, forms a cold airflow cavity 122 in the internal space.

[0083] Specifically, such as Figure 2 As shown, each cold end isolation frame 212 covers the end face of the heat exchange fin 220 located in the cold air flow cavity 122 to seal the first cavity 110 and prevent the first cavity 110 from communicating with the cold air flow cavity 122.

[0084] Preferred, such as Figures 2 to 4 As shown, the cold end isolation frame 212 can be arc-shaped, with the arc surface matching the flow path of the cold airflow within the cold end isolation frame 212. The arc surface can guide the airflow and reduce the flow resistance during the flow process. The inner contour of the cold end isolation frame 212 only needs to be arc-shaped; this application does not limit the shape of the outer contour of the cold end isolation frame 212.

[0085] In the embodiments of this application, cold end isolation frames 212 are symmetrically arranged outside the two sets of heat exchange fins 220, so that the cold airflow cavity 122 formed by the cold end isolation frame 212, a set of heat dissipation fins 220 and the first side wall 101 is not connected to the first cavity 110, thereby protecting the heating module 300 in the first cavity 110 from short circuits caused by pollutants such as dust and water vapor in the external environment.

[0086] Figure 1 In the illustrated embodiment, see Figure 6 and Figure 7 , Figure 6 for Figure 1 The diagram shows the AA cross-section of the chassis. Figure 7 for Figure 6 The diagram shows the BB cross-section of the chassis. Figure 2 , Figure 6 and Figure 7 As shown, each set of heat exchange fins 220 is bent into multiple Z-shaped sections arranged in a straight line. The intervals between the multiple protrusions facing the hot airflow cavity 121 form a hot air duct 1211, and the intervals between the multiple protrusions facing the cold airflow cavity 122 form a cold air duct 1221.

[0087] Hot air in the first cavity 110 enters the hot airflow cavity 121 under the action of the hot end fan 230, moves along the hot air duct 1211 to the second end of the hot airflow cavity 121 to transfer heat to the heat exchange fins 220, and then returns to the first cavity 110.

[0088] Cold air from the external environment enters the cold airflow chamber 122 under the action of the cold end fan 240, moves along the cold air duct 1221, absorbs heat from the heat exchange fins 220, and is then discharged from the casing 10.

[0089] Specifically, such as Figure 2 and Figure 6 As shown, the heat exchange fins 220 are formed by the transverse topology of the Z-shaped plates, forming multiple channels separated by the fin plate walls. Hot air ducts 1211 and cold air ducts 1221 are arranged alternately, that is, hot air flows on one side of the fin plate wall and cold air flows on the other side. The hot and cold air flows with the fin plate wall for convective heat exchange, so that a temperature difference is formed on both sides of the fin plate wall. Driven by the temperature difference, heat is transferred from the high temperature side of the plate wall to the low temperature side, and then the heat transfer is realized under the action of the airflow.

[0090] The two sets of heat exchange fins 220 can be arranged in an array along the y-direction, or as shown in the diagram. Figure 2 The arrangement shown is symmetrical (or mirrored) along the x-direction.

[0091] The number of hot-end fans 230 can be set according to the size of the heat exchange fins 220 in the y direction. If the size is large, multiple hot-end fans can be set. This application does not limit the number of hot-end fans 230.

[0092] In this embodiment, the heat exchange fins 220 are bent into multiple Z-shaped sections arranged in a straight line, forming multiple protrusions facing the hot airflow cavity 121 and multiple protrusions facing the cold airflow cavity 122. The hot and cold airflows can flow and exchange heat at the end faces of the protrusions or in the multiple channels separated by the fin walls, greatly increasing the heat exchange area and enhancing the heat exchange effect. Simultaneously, regardless of whether the hot and cold airflows exchange heat at the concave and convex end faces or in the channels, the heat conduction path within the solid is along the wall thickness direction of the heat exchange fins 220, resulting in low thermal resistance. Furthermore, the thinner the heat exchange fins 220, the lower the thermal resistance. Additionally, although the hot and cold airflows do not contact each other, they form a mutually penetrating and surrounding fusion state on the heat exchange fins 220, which facilitates a more thorough heat exchange process.

[0093] Figure 1 In the illustrated embodiments, as Figures 3 to 5 As shown, the heat exchange fins 220 are arranged along the height direction of the chassis 10, and end caps 250 are provided at the top and bottom ends; the hot end fan 230 is arranged above the top end cap 250, and forms a hot end manifold 1212 between the fan and the end cap 250.

[0094] The end cap 250 includes a sealing portion 251 and an opening portion 252; the sealing portion 251 covers a plurality of protrusions of the heat exchange fins 220 facing the hot air flow cavity 121, for sealing the cold air duct 1221; the opening portion 252 corresponds to a plurality of protrusions of the heat exchange fins 220 facing the cold air flow cavity 122, so that the hot air flow cavity 121 communicates with the hot end confluence cavity 1212.

[0095] Specifically, such as Figure 3 and Figure 5 As shown, the hot air in the first cavity 110 enters the hot end confluence cavity 1212 under the action of the hot end fan 230, and then enters the hot air flow cavity 121 from the top end cover 250. It moves along the hot air duct 1211 to the bottom end of the heat exchange fin 220. During the movement along the hot air duct 1211, it undergoes convective heat exchange with the heat exchange fin 220. As the hot air flows, the temperature of the hot air gradually decreases and becomes low temperature air. Finally, it returns to the first cavity 110 from the bottom end cover 250 of the heat exchange fin 220.

[0096] like Figure 5 As shown, the structural outline of the end cap 250 corresponds to the outline of the heat exchange fins 220, sealing the top and bottom of the cold air duct 1221, so that the hot-end fan 230 can only draw hot air from the first cavity 110 into the hot airflow cavity 121 and flow along the hot air duct 1211. Furthermore, the size of the end cap 250 is not smaller than the size of the heat exchange fins 220, and the width of the protrusion of its sealing portion 251 along the x-direction is greater than the width of the protrusion of the heat exchange fins 220 along the x-direction. Correspondingly, the width of the protrusion of the opening portion 252 is not greater than the width of the protrusion of the heat exchange fins 220.

[0097] Figure 7 The diagram illustrates the complete flow path of hot air inside the chassis 10. The heating module 300 heats the air within the first cavity 110. The hot airflow, driven by the hot-end fan 230, enters the hot-end confluence cavity 1212 and then the hot airflow cavity 121 of the heat exchanger 200. Within the hot airflow cavity 121, the hot airflow undergoes convective heat exchange with the heat exchange fins 220 (indirectly exchanging heat with the cold airflow on the other side of the heat exchange fins 220 wall) and flows unidirectionally along the hot air duct 1211. As the flow and heat exchange proceed, the temperature of the hot airflow decreases. Finally, the hot airflow with a certain temperature drop or subcooling flows out from the lower part of the hot airflow cavity 121 and, driven by the guide plate 260, flows towards the heating module 300, thereby cooling the heating module 300 to meet its temperature specifications. This flow and heat exchange process is repeated cyclically. See further details. Figure 8 , Figure 8 for Figure 7 A partial enlarged view of region A is shown. After the hot airflow enters the hot end confluence cavity 1212, it enters the hot airflow cavity 121 through the open portion 252 of the end cover 250. The sealing portion 251 of the end cover 250 prevents the hot airflow from entering the cold airflow cavity 122, thereby ensuring the mutual isolation between the hot airflow cavity 121 and the cold airflow cavity 122.

[0098] In this embodiment of the application, the hot-end fan 230 is positioned above the top end cover 250, allowing hot air in the first cavity 110 to flow in from the top of the hot airflow cavity 121 and out from the bottom of the hot airflow cavity 121, flowing along the complete heat exchange fins 220, increasing the heat exchange area and enhancing the heat exchange effect. A hot-end confluence cavity 1212 is formed between the hot-end fan 230 and the end cover 250, which can gather the hot airflow in the first cavity 110 in the hot-end confluence cavity 1212 and then distribute it to each hot air duct 1211 of the hot airflow cavity 121, ensuring that the hot airflow can flow relatively evenly into each hot air duct 1211, thus enhancing flow and heat exchange efficiency.

[0099] Figure 1 In the illustrated embodiments, as Figure 1 , Figure 3 and Figure 6 As shown, an air inlet 130 and an air outlet 140 are provided on the side wall of the chassis 10 in the area corresponding to the cold airflow cavity 122.

[0100] The cold airflow chamber 122 is divided into a cold end confluence chamber 1222 and a cold end branch chamber 1223.

[0101] The cold end manifold 1222 is connected to the air inlet 130, and the cold end branching chamber 1223 is connected to the air outlet 140.

[0102] The cold end fan 240 is installed in the cold end manifold 1222 so that the cold air from the external environment enters the cold end manifold 1222 from the air inlet 130 under the action of the cold end fan 240, moves along the cold air duct 1221 to the cold end distribution chamber 1223, and then is discharged from the chassis 10 from the air outlet 140.

[0103] Specifically, such as Figure 1 As shown, the air inlet 130 and the air outlet 140 are disposed on the first side wall 101, and both the air inlet 130 and the air outlet 140 are formed by an array of multiple small through holes. Preferably, the opening ratio of the air inlet 130 and the air outlet 140 formed by the array of small through holes is not less than 50%, which can minimize the flow resistance at the opening and increase the heat exchange flow rate while meeting safety regulations.

[0104] like Figure 3 As shown, the cold airflow chamber 122 is symmetrically arranged on both sides of the hot airflow chamber 121. At least one partition 213 is provided at intervals along the z-direction on the cold end isolation frame 212 to divide the cold airflow chamber 122 into a cold end confluence chamber 1222 and a cold end branch chamber 1223, so that the cold end confluence chamber 1222 and the cold end branch chamber 1223 are not directly connected to each other under the action of the partition 213, but instead serve as the upstream and downstream of the cold air duct 1221, respectively, and are connected through the cold air duct 1221. Figure 3The illustrated embodiment shows two cold air flow chambers 122, each of which is equipped with a cold end fan 240 in its cold end junction chamber 1222 to increase the cold air flow rate and improve the heat exchange capacity.

[0105] In the embodiments of this application, the cold airflow cavity 122 is divided into a cold end confluence cavity 1222 and a cold end distribution cavity 1223, so that the cold air from the external environment gathers in the cold end confluence cavity 1222 and is then distributed to each cold air duct 1221 of the cold airflow cavity 122, ensuring that the cold airflow can flow into each cold air duct 1221 relatively evenly, thereby enhancing the flow and heat exchange efficiency; the cold airflow that has completed heat exchange is discharged from the cold end distribution cavity 1223 from the chassis 10, carrying the heat on the heat exchange fins 220 to the external environment.

[0106] Figure 1 In the illustrated embodiments, as Figure 3 As shown, there are multiple cold end distribution chambers 1223 and multiple air outlets 140 connected to the cold end distribution chambers 1223.

[0107] After the cold air from the external environment enters the cold end manifold 1222, it can be dispersed along the cold air duct 1221 and move toward multiple cold end distribution chambers 1223, and then be discharged from the chassis 10 from multiple air outlets 140.

[0108] Specifically, Figure 3 In the illustrated embodiment, each cold airflow cavity 122 includes a cold-end manifold 1222 and two cold-end branching cavities 1223, wherein the two cold-end branching cavities 1223 are respectively disposed on both sides of the cold-end manifold 1222. Accordingly, as shown... Figure 1 As shown, the first sidewall 101 is provided with an air inlet 130 and two air outlets 140, with the two air outlets 140 respectively located on both sides of the air inlet 130. Under the action of the cold-end fan 240, the cold air from the external environment enters the middle area of ​​each cold air duct 1221, and then splits into two, flowing to opposite ends of the cold air duct 1221, and is discharged from the chassis 10 from the two cold-end distribution chambers 1223.

[0109] In other embodiments, the number of cold-end manifolds 1222 can also be multiple, and the cold-end manifolds 1222 and cold-end branch cavities 1223 can be distributed in any combination, not limited to... Figure 3 The alternating distribution shown is not limited in this application.

[0110] In this embodiment of the application, multiple cold-end distribution cavities 1223 are provided, so that after cold air from the external environment enters the cold-end confluence cavity 1222, it can be dispersed along the cold air duct 1221 and move toward the multiple cold-end distribution cavities 1223, such as... Figure 3 , Figure 6 and Figure 7As shown, the flow path of the cold air in the heat exchanger 200 is approximately "multi-directional zigzag", while the flow path of the hot air in the heat exchanger 200 is approximately "unidirectional straight". From the air direction, the cold and hot air forms a state of coexistence of co-current and counter-current. In terms of interaction mode, the cold and hot air forms a state of mutual penetration and encirclement, which is conducive to making the heat exchange process more complete and improving the heat exchange effect.

[0111] Figure 1 In the illustrated embodiments, as Figures 3 to 5 and Figure 7 As shown, the heat exchanger 200 also includes a baffle plate 260.

[0112] The guide plate 260 is inclinedly disposed below the bottom end cap 250 of the heat exchange fins 220, with its side near the heating module 300 tilting downwards.

[0113] The hot air in the first cavity 110 moves along the hot air duct 1211 to the bottom end of the heat exchange fin 220, and then converges at the bottom end cap 250 of the heat exchange fin 220 before returning to the first cavity 110 along the direction of the guide plate 260.

[0114] By applying the embodiments of this application, the guide plate 260 is provided, which can actively change the direction of the hot airflow, so that the hot air in the first cavity 110 can flow more efficiently to the heating module 300 located at the far end of the first cavity 110 after heat exchange in the hot airflow cavity 121, thereby improving the circulation efficiency of the hot airflow.

[0115] As mentioned above, Figure 1 The chassis 10 and heat exchanger 200 shown in the first embodiment are provided with the heat exchanger 200 disposed inside the first side wall 101 of the chassis housing 100; in other embodiments, the heat exchanger 200 may be disposed on multiple side walls of the chassis housing 100.

[0116] See Figures 9 to 13 , Figure 9 A perspective view of the chassis provided in the second embodiment of this application; Figure 10 for Figure 9 The top-view perspective view of the chassis shown; Figure 11 for Figure 10 A three-dimensional structural diagram of the heat exchanger shown. Figure 12 for Figure 9 The diagram shows the AA cross-section of the chassis. Figure 13 for Figure 10 The diagram shows a cross-sectional view of the chassis (BB section). The main difference between the second embodiment and the first embodiment lies in the location of the heat exchanger 200, the air inlet 130, and the air outlet 140, as well as the structure of the heat exchanger housing 210. The differences in these structures will be described in detail below.

[0117] like Figure 9 As shown, in the second embodiment of this application, the heat exchanger 200 is installed on the first side wall 101 of the chassis 10; the heat exchanger housing 210 extends from the second side wall 102 of the chassis 10 to the third side wall 103; both the second side wall 102 and the third side wall 103 are adjacent to the first side wall 101.

[0118] The space enclosed by the heat exchanger housing 210, the first sidewall 101, the second sidewall 102, and the third sidewall 103 forms a second cavity 120.

[0119] Each heat exchange fin 220 is connected to the heat exchanger housing 210 and the first sidewall 101 on both sides.

[0120] The internal space formed between the heat exchange fins 220 and the second sidewall 102, and between the heat exchange fins 220 and the third sidewall 103, forms a cold airflow cavity 122.

[0121] Both the second sidewall 102 and the third sidewall 103 are provided with air inlets 130 and air outlets 140.

[0122] Specifically, such as Figure 10 and Figure 11 As shown, the heat exchanger 200 of the second embodiment of this application includes two sets of heat exchange fins 220, which divide the second cavity 120 into three parts arranged along the y direction, namely a hot air flow cavity 121 disposed between the two sets of heat exchange fins 220 and a cold air flow cavity 122 symmetrically disposed on both sides of the hot air flow cavity 121.

[0123] Each heat exchange fin 220 is equipped with a hot-end fan 230 above it, so that the hot air in the first cavity 110 can flow evenly to the hot air duct 1211 of the two heat exchange fins 220. The two hot-end fans 230 can be mounted above the heat exchange fins 220 by a fan mounting cover, the internal space of the fan mounting cover forming a hot-end confluence cavity 1212, or they can be mounted above the heat exchange fins 220 by a separate fan mounting cover, forming two independent hot-end confluence cavities 1212. This application does not limit this.

[0124] Hot air in the first cavity 110, under the action of two hot-end fans 230, enters the hot-end confluence cavity 1212, moves along the hot air duct 1211 to the bottom end of the heat exchange fins 220, and undergoes convective heat exchange with the heat exchange fins 220 during its movement along the hot air duct 1211. As the hot air flows, its temperature gradually decreases, becoming low-temperature air, and finally converges at the end cap 250 at the bottom end of the heat exchange fins 220, returning to the first cavity 110 along the direction of the guide plate 260. The end cap 250 and guide plate 260 in the second embodiment of this application have the same structure as in the first embodiment, and will not be described again here.

[0125] like Figure 11As shown, the two sets of heat exchange fins 220 are surrounded by the heat exchanger shell 210 in the x and y directions. The heat exchanger shell 210 on both sides in the y direction has openings that seal with the second side wall 102 or the third side wall 103 to form the cold end confluence cavity 1222 and the cold end diversion cavity 1223, allowing cold air to enter and exit the heat exchanger 200, and also ensuring that the cold air flow cavity 122 is isolated from the first cavity 110. Figure 11 In the illustrated embodiment, the cold airflow cavity 122 includes a cold-end manifold cavity 1222 and a cold-end branch cavity 1223. The positional relationship between the cold-end manifold cavity 1222 and the cold-end branch cavity 1223 is not limited and can be as follows: Figure 11 The cold end manifold 1222 shown is located above the cold end branch 1223, or it can be arranged in the opposite way.

[0126] Under the action of the cold-end fan 240, cold air from the external environment enters the cold-end manifold 1222 through the air inlet 130, moves along the cold air duct 1221 to the cold-end distribution chamber 1223, and then exits the chassis 10 through the air outlet 140. When the cold-end manifold 1222 is above the cold-end distribution chamber 1223, the cold airflow direction on the heat exchange fins 220 is the same as the hot airflow direction. When the cold-end manifold 1222 is below the cold-end distribution chamber 1223, the cold airflow direction on the heat exchange fins 220 is opposite to the hot airflow direction. In other embodiments, there may be multiple cold-end manifolds 1222 and cold-end distribution chambers 1223, in which case a state of coexistence of co-current and counter-current flow is formed between the cold and hot airflows.

[0127] The heat exchange principle of the second embodiment provided in this application is the same as... Figure 1 Similar to the first embodiment shown, it also achieves the beneficial effects of the first embodiment. Specifically, hot air circulates between the first cavity 110 and the hot airflow cavity 121, while cold air circulates between the external environment of the chassis 10 and the cold airflow cavity 122, exchanging heat on the heat exchange fins 220. This gradually transfers the heat generated by the heating module 300 to the external environment of the chassis 10 through heat exchange. The heat exchange path length is only the wall thickness of the heat exchange fins 220, thereby improving heat exchange efficiency. The cold and hot airflows are isolated from each other and do not come into direct contact, protecting the heating module 300 inside the first cavity 110 from short circuits caused by dust, moisture, and other pollutants in the external environment, thus ensuring the high IP protection level of the first cavity 110. Furthermore, in the second embodiment provided in this application, the air inlet 130 and the air outlet 140 are disposed on the second side wall 102 and the third side wall 103, so that the chassis 10 can be adapted to various other industrial scenarios. For example, when the first side wall 101 of the chassis 10 needs to be installed against a wall, it will not interfere with the flow of cold air into and out of the chassis 10.

[0128] In this embodiment of the application, besides the placement of the heat exchanger 200, the air inlet 130, and the air outlet 140, the structure of the heat exchanger housing 210 and... Figure 1 The first embodiment shown is different, but the remaining structure and heat exchange principle can be the same as those shown. Figure 1 The settings are the same as in the first embodiment shown, and will not be repeated here.

[0129] As mentioned above, Figure 1 The first embodiment shown and Figure 9 In the second embodiment shown, the heat exchanger 200 includes two sets of heat exchange fins 220; in other embodiments, the heat exchanger 200 may include multiple sets of heat exchange fins 220.

[0130] See Figure 14 and Figure 15 , Figure 14 A perspective view of the chassis provided in the third embodiment of this application; Figure 15 for Figure 14 The diagram shows a top-view perspective view of the chassis. The main difference between the third embodiment and the first and second embodiments lies in the arrangement of the heat exchange fins 220, the hot-end fan 230, the cold-end fan 240, the hot airflow chamber 121, and the cold airflow chamber 122. The following provides a detailed description of these structural differences.

[0131] like Figure 14 and Figure 15 As shown, in the third embodiment of this application, the heat exchanger 200 is mounted on the first side wall 101 of the chassis 10; the heat exchanger housing 210 extends from the second side wall 102 of the chassis 10 to the third side wall 103; both the second side wall 102 and the third side wall 103 are adjacent to the first side wall 101.

[0132] The space enclosed by the heat exchanger housing 210, the first sidewall 101, the second sidewall 102, and the third sidewall 103 forms a second cavity 120.

[0133] The heat exchanger 200 includes multiple sets of spaced heat exchange fins 220, with each set of heat exchange fins 220 connected to the heat exchanger housing 210 and the first sidewall 101 on both sides respectively.

[0134] Multiple sets of heat exchange fins 220 divide the second cavity 120 into hot air flow cavity 121 and cold air flow cavity 122 arranged alternately in sequence.

[0135] Among the multiple sets of heat exchange fins 220, the two outermost heat exchange fins 220 are in contact with the second sidewall 102 and the third sidewall 103 respectively; the second sidewall 102 and the third sidewall 103 are provided with through holes so that the two outermost heat exchange fins 220 can contact the external environment of the chassis 10 through the through holes.

[0136] Specifically, such as Figure 15 As shown, the heat exchanger 200 includes four sets of spaced heat exchange fins 220, which are sequentially arranged along the positive y-direction as the first heat exchange fin 220A, the second heat exchange fin 220B, the third heat exchange fin 220C, and the fourth heat exchange fin 220D. The four sets of heat exchange fins 220 divide the second cavity 120 into five parts, which are, sequentially arranged along the positive y-direction, the cold airflow cavity 122, the hot airflow cavity 121, the cold airflow cavity 122, the hot airflow cavity 121, and the cold airflow cavity 122.

[0137] The first heat exchange fin 220A is exposed to the external environment of the chassis 10 through the through hole on the second side wall 102, and the fourth heat exchange fin 220D is exposed to the external environment of the chassis 10 through the through hole on the third side wall 103. They can directly rely on natural convection and radiation for heat exchange, or rely on fans or temperature control equipment outside the chassis 10 or in the computer room environment for heat exchange. Alternatively, cold end fans can be installed for the first heat exchange fin 220A and the fourth heat exchange fin 220D to perform forced convection heat exchange. This application does not limit this.

[0138] In addition to achieving the beneficial effects of the first and second embodiments, the third embodiment of this application provides multiple sets of spaced heat exchange fins 220, dividing the second cavity 120 into multiple alternating hot airflow chambers 121 and cold airflow chambers 122. This allows the hot / cold airflows to disperse into more hot air ducts 1211 / cold air ducts 1221, creating a more thorough mutual penetration and fusion between the hot and cold airflows, thus improving the heat exchange effect. The multiple sets of spaced heat exchange fins 220 also increase the heat exchange area of ​​the heat exchanger, further improving heat exchange efficiency. Furthermore, the first heat exchange fin 220A and the fourth heat exchange fin 220D are exposed to the external environment of the chassis 10, eliminating the need for a cold-end fan and allowing for spontaneous heat exchange with the external environment of the chassis 10, thus reducing the number of cold-end fans 240.

[0139] exist Figure 14 In the third embodiment shown, see Figures 16 to 18 , Figure 16 for Figure 15 A three-dimensional structural diagram of the heat exchanger from the first angle; Figure 17 for Figure 15 A three-dimensional structural diagram of the heat exchanger from a second angle; Figure 18 for Figure 17 A plan perspective view of the heat exchanger shown. Figures 16 to 18 As shown, the heat exchanger 200 includes a fan mounting shroud 270.

[0140] A fan mounting cover 270 is disposed on the top of multiple sets of heat exchange fins 220, and hot end manifold 1212 and cold end manifold 1222 that are not interconnected are alternately opened on the fan mounting cover 270.

[0141] The hot end manifold 1212 opens toward the first cavity 110 and is connected to the hot airflow cavity 121; the cold end manifold 1222 opens toward the first sidewall 101 and is connected to the air inlet 130 on the first sidewall 101 and the cold airflow cavity 122 located between adjacent heat exchange fins 220.

[0142] The hot-end fan 230 is disposed in the hot-end manifold 1212, and the cold-end fan 240 is disposed in the cold-end manifold 1222.

[0143] Specifically, such as Figures 15 to 17 As shown, two hot air flow chambers 121 and one cold air flow chamber 122 are located between the first heat exchange fin 220A, the second heat exchange fin 220B, the third heat exchange fin 220C, and the fourth heat exchange fin 220D, and are respectively provided with a hot end manifold 1212 and a cold end manifold 1222 at the top. Each of the two hot air flow chambers 121 and the one cold air flow chamber 122 includes two rows of hot air ducts 1211 and cold air ducts 1221.

[0144] After the hot air enters the hot air cavity 121 from the top and the cold air enters the cold air cavity 122, both flow vertically downwards along the z-direction, with the airflow direction being the same.

[0145] In the third embodiment of this application, both the hot-end fan 230 and the cold-end fan 240 are housed in the fan mounting cover 270 on top of the heat exchange fins 220, resulting in a more organized internal structure of the heat exchanger 200. By providing the fan mounting cover 270 and separating the hot-end manifold 1212 and the cold-end manifold 1222 within the fan mounting cover 270, contact between hot and cold airflows is avoided, protecting the heating module 300 within the first cavity 110 from short circuits caused by dust, moisture, and other contaminants in the external environment, thereby ensuring a high IP protection level for the first cavity 110.

[0146] exist Figure 14 In the third embodiment shown, as Figures 16 to 18 As shown, the heat exchanger 200 includes: a flow guide 280.

[0147] The flow guide shroud 280 is located at the bottom of multiple sets of heat exchange fins 220, and the flow guide shroud 280 has alternating hot end flow divider 1213 and cold end flow divider 1223 that are not interconnected.

[0148] The opening of the hot end diversion cavity 1213 faces the first cavity 110 and is connected to the hot air flow cavity 121; the opening of the cold end diversion cavity 1223 faces the first side wall 101 and is connected to the air outlet 140 on the first side wall 101 and the cold air flow cavity 122 located between adjacent heat exchange fins 220.

[0149] Specifically, the hot-end branch cavity 1213 corresponds vertically to the hot-end junction cavity 1212, and the cold-end branch cavity 1223 corresponds vertically to the cold-end junction cavity 1222.

[0150] The hot-end shunt cavity 1213 can be configured as follows: Figure 16 The inclined flow pattern shown allows the hot airflow to flow more efficiently to the heating module 300 located at the far end of the first cavity 110.

[0151] By applying the third embodiment of this application, by setting up a flow guide shroud 280 and separating the hot end flow distribution cavity 1213 and the cold end flow distribution cavity 1223 inside the flow guide shroud 280, the contact between cold and hot airflows is avoided, and the heating module 300 in the first cavity 110 is protected from short circuits caused by pollutants such as dust and water vapor in the external environment, thereby ensuring the high IP protection level of the first cavity 110.

[0152] See Figures 19 to 23 , Figure 19 for Figure 15 The diagram shows the AA cross-section of the chassis. Figure 20 for Figure 19 A magnified view of a portion of region A shown below; Figure 21 for Figure 15 The diagram shows the BB cross-section of the chassis. Figure 22 for Figure 21 A magnified view of a portion of region A shown below; Figure 23 for Figure 21 The diagram shows the EE cross-section of the heat exchanger.

[0153] like Figures 19 to 23 As shown, on the one hand, cold air from the external environment, under the action of the cold-end fan 240, enters the cold-end manifold 1222 through the air inlet 130, and passes through the opening 252 on the top end cover 250 into the cold airflow cavity 122 between the second heat exchange fins 220B and the third heat exchange fins 220C. After flowing and exchanging heat along the cold air duct 1221, it then enters the cold-end distribution cavity 1223 of the guide shroud 280 through the opening on the downstream end cover 250, and is discharged from the casing 10 through the air outlet 140. Further, see... Figure 20 After the cold air passes through the opening 252 of the top end cap 250, the flow channel of the cold air widens, and the cold airflow has a gradually expanding flow effect. As the cold air flows, after passing through the opening 252 of the bottom end cap 250, the flow channel narrows again, and there is a gradually contracting flow effect. Thus, the cold airflow forms a "gradually expanding and contracting" flow effect in the heat exchanger 200, which causes a change in the flow direction of the cold air, increases local disturbance, reduces heat exchange dead zones, and helps to enhance the heat exchange effect.

[0154] On the other hand, the cold air from the external environment can also directly exchange heat with the first heat exchange fin 220A and the fourth heat exchange fin 220D. At this time, the cold air enters the fin gaps of the first heat exchange fin 220A and the fourth heat exchange fin 220D facing the external environment under the action of natural convection, etc., that is, it enters the cold air duct 1221 for flow and heat exchange. The cold air flow and the fin wall can specifically be natural convection heat exchange, radiation heat exchange, or heat exchange with other temperature control equipment outside the chassis 10. It can also be phase change heat exchange with the adsorption and desorption coating 221 on the fin surface. For details, please refer to the following description.

[0155] Similarly, as Figures 19 to 23 As shown, the hot air in the first cavity 110 enters the hot-end confluence cavity 1212 under the action of the hot-end fan 230, then passes through the opening 252 of the top end cover 250 into the hot airflow cavity 121. After flowing and exchanging heat along the hot air duct 1211, it then enters the hot-end distribution cavity 1213 through the opening 252 of the bottom end cover 250, and returns to the first cavity 110 along the guiding direction of the guide shroud 280. The airflow temperature decreases after heat exchange, thereby providing cooling to the heating module 300 and facilitating its heat dissipation. Further, see... Figure 22 The hot airflow also has a "gradual expansion and contraction" flow effect in the hot airflow cavity 121, which increases local disturbance, reduces heat exchange dead zone, and helps to enhance heat exchange effect.

[0156] exist Figure 14 In the third embodiment shown, see Figure 24 and Figure 25 , Figure 24 for Figure 18 The diagram shows the CC cross-section of the heat exchanger. Figure 25 for Figure 18 The diagram shows a DD cross-sectional view of the heat exchanger. Figure 24 As shown, the top and bottom ends of the multiple sets of heat exchange fins 220 are provided with end caps 250; the end caps 250 include a sealing part 251 and an opening part 252.

[0157] The sealing portion 251 located below the hot end fan 230 covers multiple protrusions of the adjacent heat exchange fins 220 facing the hot air flow cavity 121, and is used to seal the cold air duct 1221; the sealing portion 251 located below the cold end fan 240 covers multiple protrusions of the adjacent heat exchange fins 220 facing the cold air flow cavity 122, and is used to seal the hot air duct 1211.

[0158] Specifically, Figure 24 The cross-section shown is the cross-section of the end cap 250, where the area with the cross-section line is the sealing part 251, and the remaining part is the opening part 252. (Refer to...) Figure 24 and Figure 25The protrusions of the first heat exchange fin 220A and the fourth heat exchange fin 220D facing the hot air flow cavity 121 are completely covered by the sealing part 251, so that the cold air flow cavity 122 is isolated from the hot end confluence cavity 1212.

[0159] Regarding the second heat exchange fin 220B and the third heat exchange fin 220C, taking the second heat exchange fin 220B as an example: the protrusion of the second heat exchange fin 220B facing the first heat exchange fin 220A is covered only by the sealing part 251 at its end. Similarly, the protrusion of the second heat exchange fin 220B facing the third heat exchange fin 220C is also covered only by the sealing part 251 at its end. These two sealing parts 251 are formed as one unit. With the above-described sealing part 251 configuration, the hot air flow chamber 121 can be isolated from the cold end manifold 1222, and the cold air flow chamber 122 can be isolated from the hot end manifold 1212.

[0160] The end cap 250, the heat exchange fins 220, and the parts that come into contact with the heat exchanger housing 210 are all sealed to ensure isolation between the cold and hot airflows.

[0161] By applying the third embodiment of this application, an end cap 250 is provided so that the hot airflow cavity 121 and the cold airflow cavity 122 are not connected to each other, which can protect the heating module 300 in the first cavity 110 from short circuits caused by pollutants such as dust and water vapor in the external environment, thereby ensuring the high IP protection level of the first cavity 110.

[0162] exist Figure 14 In the third embodiment shown, see Figure 26 , Figure 26 for Figure 25 A magnified view of region A shown below. Figure 26 As shown, the two outermost heat exchange fins 220 in the multiple sets of heat exchange fins 220 have an adsorption and desorption coating 221 on the side that is in contact with the external environment of the chassis 10. This coating is used to absorb the heat from the heat exchange fins 220 during the heating process of the chassis 10 and to adsorb water vapor from the external environment when the chassis 10 is in a low power consumption state.

[0163] Specifically, such as Figure 26 As shown, the first heat exchange fin 220A and the fourth heat exchange fin 220D are provided with an adsorption-desorption coating 221 facing the external environment. The adsorption-desorption coating 221 uses water vapor in the air as a water source and achieves moisture replenishment through spontaneous adsorption of water vapor. During the heating process of the chassis 10, the adsorption-desorption coating 221 undergoes water decomposition and adsorption, which can absorb a large amount of heat and can suppress the heating of the chassis 10 to a certain extent; when the chassis 10 is in a low-power standby state, the adsorption-desorption coating 221 can spontaneously adsorb water vapor from the environment to regenerate its working capacity.

[0164] By applying the third embodiment of this application, an adsorption-desorption coating 221 is provided on the side of the heat exchange fins 220 that is in contact with the external environment of the chassis 10. Heat exchange is carried out by natural convection and radiation, or by fans or temperature control equipment in the external environment of the chassis / computer room. This reduces the pressure on the fan in the cold airflow cavity 122 near the second side wall 102 and the third side wall 103. Even without a fan, the heat exchange in the cold airflow cavity 122 still has a high level.

[0165] The chassis 10 provided in the embodiments of this application will now be described in detail.

[0166] like Figure 2 , Figure 10 and Figure 15 As shown, the chassis 10 includes: a housing 100, a heating module 300, and a heat exchanger 200 as described in any of the above embodiments.

[0167] The heat-generating module 300 can be a circuit board or module (such as IGBT, resistor, etc.) that generates heat during the operation of the chassis 10, or a device that does not generate heat but is sensitive to temperature (such as capacitor, battery, etc.).

[0168] The chassis 10 provided in this application embodiment employs the heat exchanger 200 described in any of the above embodiments. The heat exchanger housing 210 divides the internal space of the chassis 10 into a first cavity 110 and a second cavity 120. Heat exchange fins 220 divide the second cavity 120 into a non-communicating hot airflow cavity 121 and a cold airflow cavity 122. Under the action of the hot-end fan 230 and the cold-end fan 240, hot air circulates between the first cavity 110 and the hot airflow cavity 121, while cold air circulates between the external environment of the chassis 10 and the cold airflow cavity 122. Heat exchange is achieved on the heat exchange fins 220, thereby gradually transferring the heat generated by the heating module 300 to the external environment of the chassis 10 through heat exchange. The heat exchange path length is only the wall thickness of the heat exchange fins 220, thus improving heat exchange efficiency.

[0169] Furthermore, the first cavity 110 is only connected to the hot airflow cavity 121, while the hot airflow cavity 121 and the cold airflow cavity 122 are not connected to each other. The hot and cold airflows only exchange heat and do not exchange mass. That is, the hot and cold airflows are isolated from each other and will not come into direct contact. This can protect the heating module 300 in the first cavity 110 from short circuits caused by pollutants such as dust and water vapor in the external environment, thereby ensuring the high IP protection level of the first cavity 110.

[0170] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.

Claims

1. A heat exchanger, characterized by, Located inside the chassis (10), it includes a heat exchanger housing (210), at least one set of heat exchange fins (220), a hot-end fan (230), and a cold-end fan (240), wherein, The heat exchanger housing (210) divides the internal space of the chassis (10) into a first cavity (110) and a second cavity (120); the first cavity (110) is used to install the heating module (300), and the second cavity (120) is used to install the heat exchange fins (220), the hot end fan (230), and the cold end fan (240); The heat exchange fins (220) divide the second cavity (120) into a hot air flow cavity (121) and a cold air flow cavity (122) that are not connected to each other; the hot air flow cavity (121) is connected to the first cavity (110), and the cold air flow cavity (122) is connected to the external environment of the chassis (10); The hot end fan (230) is disposed at the first end of the hot air flow chamber (121) to form a gas circulation between the first chamber (110) and the air in the hot air flow chamber (121) so as to transfer the heat in the first chamber (110) to the heat exchange fins (220). The cold end fan (240) is located on the side of the heat exchange fins (220) close to the cold air flow chamber (122), so that the cold air flow chamber (122) and the cold air of the external environment form a gas circulation, and the heat on the heat exchange fins (220) is discharged from the chassis (10).

2. The heat exchanger according to claim 1, characterized in that, Each heat exchange fin (220) is bent into multiple Z-shaped shapes arranged in a line. The intervals between the multiple protrusions facing the hot air flow chamber (121) form a hot air duct (1211), and the intervals between the multiple protrusions facing the cold air flow chamber (122) form a cold air duct (1221). The hot air in the first cavity (110) enters the hot airflow cavity (121) under the action of the hot end fan (230), moves along the hot air duct (1211) to the second end of the hot airflow cavity (121) to transfer heat to the heat exchange fins (220), and then returns to the first cavity (110). The cold air from the external environment enters the cold airflow chamber (122) under the action of the cold end fan (240), moves along the cold air duct (1221), absorbs the heat on the heat exchange fins (220), and then is discharged from the chassis (10).

3. The heat exchanger of claim 2, wherein, The heat exchange fins (220) are arranged along the height direction of the chassis (10), and end caps (250) are provided at the top and bottom ends; the hot end fan (230) is arranged above the top end cap (250), and forms a hot end confluence cavity (1212) with the end cap (250); The end cap (250) includes a sealing portion (251) and an opening portion (252); the sealing portion (251) covers a plurality of protrusions of the heat exchange fins (220) facing the hot air flow cavity (121) for sealing the cold air duct (1221); the opening portion (252) corresponds to a plurality of protrusions of the heat exchange fins (220) facing the cold air flow cavity (122) so that the hot air flow cavity (121) communicates with the hot end confluence cavity (1212).

4. The heat exchanger according to claim 2 or 3, characterized in that, An air inlet (130) and an air outlet (140) are provided on the side wall of the chassis (10) in the area corresponding to the cold air flow chamber (122); The cold airflow cavity (122) is divided into a cold end confluence cavity (1222) and a cold end branch cavity (1223); The cold end manifold (1222) is connected to the air inlet (130), and the cold end branching chamber (1223) is connected to the air outlet (140); The cold end fan (240) is installed in the cold end manifold (1222) so that the cold air from the external environment enters the cold end manifold (1222) from the air inlet (130) under the action of the cold end fan (240), moves along the cold air duct (1221) to the cold end distribution chamber (1223), and then is discharged from the chassis (10) from the air outlet (140).

5. The heat exchanger according to claim 4, characterized in that, The number of cold end diversion chambers (1223) is multiple, and the number of air outlets (140) connected to the cold end diversion chambers (1223) is multiple; After the cold air from the external environment enters the cold end manifold (1222), it can be dispersed along the cold air duct (1221) and move toward the multiple cold end branch ducts (1223), and then be discharged from the chassis (10) through the multiple air outlets (140).

6. The heat exchanger of claim 4, wherein The heat exchanger (200) includes two sets of heat exchange fins (220); the heat exchanger housing (210) includes a connecting wall panel (211); The two sets of heat exchange fins (220) are arranged at intervals relative to each other in the horizontal direction and are connected on both sides by connecting wall plates (211); the internal space enclosed by the two sets of heat exchange fins (220) and the connecting wall plates (211) forms the hot air flow cavity (121).

7. The heat exchanger of claim 6, wherein The heat exchanger (200) is mounted on the first side wall (101) of the chassis (10); the heat exchanger housing (210) includes two cold end isolation frames (212); The two cold end isolation frames (212) are symmetrically arranged on the outer sides of the two sets of heat exchange fins (220); each cold end isolation frame (212) and the internal space enclosed by the set of heat exchange fins (220) and the first sidewall (101) form a cold air flow cavity (122).

8. The heat exchanger of claim 6, wherein, The heat exchanger (200) is mounted on the first side wall (101) of the chassis (10); the heat exchanger housing (210) extends from the second side wall (102) of the chassis (10) to the third side wall (103); the second side wall (102) and the third side wall (103) are both adjacent to the first side wall (101); The space enclosed by the heat exchanger housing (210) and the first sidewall (101), the second sidewall (102) and the third sidewall (103) forms the second cavity (120); Each heat exchange fin (220) is connected to the heat exchanger housing (210) and the first sidewall (101) on both sides respectively; The internal space enclosed between the heat exchange fins (220) and the second sidewall (102) and between the heat exchange fins (220) and the third sidewall (103) forms the cold airflow cavity (122); The second sidewall (102) and the third sidewall (103) are each provided with an air inlet (130) and an air outlet (140).

9. The heat exchanger of claim 3, wherein, The heat exchanger (200) further includes: a baffle plate (260); The guide plate (260) is inclinedly disposed below the bottom end cap (250) of the heat exchange fins (220), and its side near the heating module (300) is inclined downward. The hot air in the first cavity (110) moves along the hot air duct (1211) to the bottom end of the heat exchange fin (220), and then converges at the bottom end cap (250) of the heat exchange fin (220) and returns to the first cavity (110) along the direction of the guide plate (260).

10. The heat exchanger of claim 4, wherein, The heat exchanger (200) is mounted on the first side wall (101) of the chassis (10); the heat exchanger housing (210) extends from the second side wall (102) of the chassis (10) to the third side wall (103); the second side wall (102) and the third side wall (103) are both adjacent to the first side wall (101); The space enclosed by the heat exchanger housing (210) and the first sidewall (101), the second sidewall (102) and the third sidewall (103) forms the second cavity (120); The heat exchanger (200) includes multiple sets of spaced heat exchange fins (220), and the two sides of each set of heat exchange fins (220) are respectively connected to the heat exchanger shell (210) and the first sidewall (101). The multiple sets of heat exchange fins (220) divide the second cavity (120) into hot air flow cavity (121) and cold air flow cavity (122) arranged alternately in sequence; Among the multiple sets of heat exchange fins (220), the two outermost heat exchange fins (220) are in contact with the second sidewall (102) and the third sidewall (103) respectively; the second sidewall (102) and the third sidewall (103) are provided with through holes so that the two outermost heat exchange fins (220) can contact the external environment of the chassis (10) through the through holes.

11. The heat exchanger of claim 10, wherein, The heat exchanger (200) includes: a fan mounting cover (270); The fan mounting cover (270) is disposed on the top of the multiple sets of heat exchange fins (220), and the fan mounting cover (270) has alternately opened hot end manifold (1212) and cold end manifold (1222) that are not interconnected; The hot end manifold (1212) opens toward the first cavity (110) and communicates with the hot air flow cavity (121); the cold end manifold (1222) opens toward the first sidewall (101) and communicates with the air inlet (130) on the first sidewall (101) and the cold air flow cavity (122) located between adjacent heat exchange fins (220); The hot-end fan (230) is disposed in the hot-end manifold (1212), and the cold-end fan (240) is disposed in the cold-end manifold (1222).

12. The heat exchanger of claim 11, wherein, The top and bottom ends of the multiple sets of heat exchange fins (220) are provided with end caps (250); the end caps (250) include a sealing part (251) and an opening part (252); The sealing portion (251) located below the hot end fan (230) covers multiple protrusions of the adjacent heat exchange fins (220) facing the hot air flow cavity (121) and is used to seal the cold air duct (1221); the sealing portion (251) located below the cold end fan (240) covers multiple protrusions of the adjacent heat exchange fins (220) facing the cold air flow cavity (122) and is used to seal the hot air duct (1211).

13. The heat exchanger of claim 10, wherein, The heat exchanger (200) includes: a flow guide (280); The flow guide shroud (280) is disposed at the bottom of the multiple sets of heat exchange fins (220), and the flow guide shroud (280) has alternating hot end flow divider cavity (1213) and cold end flow divider cavity (1223) that are not interconnected. The opening of the hot end diversion cavity (1213) faces the first cavity (110) and is connected to the hot air flow cavity (121); the opening of the cold end diversion cavity (1223) faces the first side wall (101) and is connected to the air outlet (140) on the first side wall (101) and the cold air flow cavity (122) located between adjacent heat exchange fins (220).

14. The heat exchanger according to claim 10, characterized in that, The two outermost heat exchange fins (220) of the multiple heat exchange fins (220) are provided with an adsorption-desorption coating (221) on the side that is in contact with the external environment of the chassis (10). This coating is used to absorb heat from the heat exchange fins (220) by water decomposition during the heating process of the chassis (10) and to adsorb water vapor from the external environment when the chassis (10) is in a low power consumption state.

15. A cabinet, characterized in that include: The housing (100), the heating module (300), and the heat exchanger (200) according to any one of claims 1 to 14.

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