A heat exchanger and electronic device

Abstract

The utility model discloses an electronic equipment and heat exchanger, relate to electronic equipment heat dissipation technical field. The heat exchanger includes: heat exchanger shell and heat exchange fin, heat exchanger shell is provided with hot end air inlet, hot end air outlet, cold end air inlet and cold end air outlet, wherein, hot end air inlet and cold end air inlet are located on the opposite hot end air inlet side and cold end air inlet side on heat exchanger shell respectively, hot end air outlet and cold end air outlet are isolated from each other, and are spaced apart from hot end air inlet and cold end air inlet respectively, heat exchange fin is set up in heat exchanger shell inside along heat exchanger shell height direction, is located between hot end air inlet and cold end air inlet, and the first cavity in heat exchanger shell inside is divided into the hot air flow cavity and the cold air flow cavity that isolate each other, heat exchange fin is used for carrying out heat exchange to the hot air flow in the hot air flow cavity and the cold air flow in the cold air flow cavity.

Description

Technical Field

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

[0002] For example, in industrial applications, the electrical components of control cabinet equipment include high-heat-generating devices such as power modules and resistors, as well as low-heat-generating but highly temperature-sensitive devices such as capacitors and batteries. Therefore, during operation, the equipment needs to dissipate heat within the cavity in a timely manner to ensure that the heat-generating devices do not exceed their operating temperature range, while keeping heat-sensitive devices within a safe temperature range.

[0003] In addition, industrial environments are complex, and the air often contains dust particles or high humidity. This requires the cabinet to be made into a highly protective or even sealed cavity to improve the problem of short circuits caused by dust, moisture and other substances entering the cavity.

[0004] In related technologies, to achieve temperature control and ensure airtightness of control cabinet equipment, electrical components are housed within a sealed cavity, and a heat exchanger is used to cool the cavity. However, the heat dissipation efficiency of existing heat exchangers is generally low. Improving the heat dissipation capacity of heat exchangers and the overall electronic equipment has become an urgent problem to be solved in this industry. Utility Model Content

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

[0006] This utility model provides a heat exchanger, which includes: a heat exchanger shell and heat exchange fins;

[0007] The heat exchanger housing is provided with a hot-end air inlet, a hot-end air outlet, a cold-end air inlet, and a cold-end air outlet; wherein, the hot-end air inlet and the cold-end air inlet are respectively located on the opposite hot-end air inlet side and cold-end air inlet side of the heat exchanger housing; the hot-end air outlet and the cold-end air outlet are isolated from each other and are respectively spaced apart from the hot-end air inlet and the cold-end air inlet;

[0008] The heat exchange fins are disposed inside the heat exchanger housing along the height direction of the heat exchanger housing, located between the hot end air inlet and the cold end air inlet, dividing the first cavity inside the heat exchanger housing into a mutually isolated hot air flow cavity and a cold air flow cavity.

[0009] The hot end air inlet and hot end air outlet are connected to the hot air flow chamber; the cold end air inlet and cold end air outlet are connected to the cold air flow chamber.

[0010] The heat exchange fins are used to exchange heat between the hot airflow entering the hot airflow chamber and the cold airflow entering the cold airflow chamber; after heat exchange, the hot airflow is discharged from the heat exchanger through the hot end outlet, and the cold airflow is discharged from the heat exchanger through the cold end outlet.

[0011] This utility model also provides an electronic device, including: a heat exchanger and a chassis as described in any one of the embodiments of this utility model;

[0012] The heat exchanger is located inside the chassis and is used to dissipate heat from the high-heat-generating modules and heat-sensitive modules inside the chassis.

[0013] The heat exchanger abuts against the rear shell of the chassis; the cold end air inlet of the heat exchanger is connected to the rear shell air inlet on the rear shell to receive external cold airflow; the cold end air outlet is connected to the rear shell air outlet to export the heat-exchanged cold airflow to the outside of the chassis.

[0014] The heat exchanger's hot-end air inlet and hot-end air outlet face the inside of the chassis, so as to receive the hot airflow generated by the high-heat-generating module through the hot-end air inlet, and to export the heat-exchanged hot airflow into the chassis through the hot-end air outlet.

[0015] Beneficial effects:

[0016] This utility model provides a heat exchanger and electronic device, which uses heat exchange fins to divide the first cavity inside the heat exchanger, enclosed by the heat exchanger shell, into a hot airflow cavity and a cold airflow cavity. The heat exchange fins inside the heat exchanger allow the hot airflow in the hot airflow cavity and the cold airflow in the cold airflow cavity to flow in their respective cavities, exchanging heat through the fins. When the hot and cold airflows exchange heat through the fins, the heat conduction path is along the thickness of the thin wall of the fins, effectively reducing the heat conduction path length, resulting in lower thermal resistance and thus improving heat dissipation efficiency.

[0017] Hot air enters the hot airflow chamber through the hot-end inlet on the hot-end inlet side, undergoes heat exchange within the chamber, and then exits the heat exchanger through the hot-end outlet. Cold air enters the cold airflow chamber through the cold-end inlet on the cold-end inlet side, undergoes heat exchange within the chamber, and then exits the heat exchanger through the cold-end outlet. The hot and cold airflows are isolated from each other; the hot airflow circulates within the hot airflow chamber, and the cold airflow circulates within the cold airflow chamber. Heat exchange is completed between the two airflows as they pass through the heat exchanger, ensuring high flow and heat exchange efficiency while maintaining a high IP protection rating for the electronic equipment.

[0018] 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

[0019] 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.

[0020] Figure 1 This is a schematic diagram of the structure of the heat exchanger with a heat exchanger shell provided in the first embodiment of the present invention;

[0021] Figure 2 for Figure 1 The diagram shown illustrates the structure of a heat exchanger without a heat exchanger housing.

[0022] Figure 3 A top view of the heat exchanger provided in the first embodiment of this utility model when it is installed inside the chassis;

[0023] Figure 4a A schematic diagram of the chassis of the control cabinet equipment provided by this utility model;

[0024] Figure 4b A schematic diagram of the internal structure of the control cabinet equipment provided by this utility model;

[0025] Figure 5 for Figure 3 A cross-sectional view along the AA direction;

[0026] Figure 6 for Figure 3 Cross-sectional view along the BB direction;

[0027] Figure 7 for Figure 2 A magnified view of a section of M1;

[0028] Figure 8a This is a schematic diagram of the structure of the heat exchanger provided in the second embodiment of the present invention;

[0029] Figure 8b for Figure 8a Perspective view;

[0030] Figure 8c for Figure 8b A bottom view of the heat exchanger shown;

[0031] Figure 8d for Figure 8c A magnified view of a portion of the image;

[0032] Figure 8e for Figure 8d A schematic diagram of the structure with a heat exchanger housing;

[0033] Figure 8f for Figure 8a The heat exchanger shown is not a schematic diagram of the heat exchanger housing.

[0034] Figure 8g for Figure 8f A bottom view of the heat exchanger shown;

[0035] Figure 8h for Figure 8g A magnified view of a portion of the image;

[0036] Figure 9a for Figure 8a The heat exchanger is located inside the chassis and its cross-sectional view is as follows: Figure 3 Cross-sectional view as shown in the AA direction;

[0037] Figure 9b for Figure 8a The heat exchanger is located inside the chassis and its cross-sectional view is as follows: Figure 3 Cross-sectional view as shown in the BB direction;

[0038] Figure 10a This is a schematic diagram of the structure of a heat exchanger provided in the third embodiment of the present invention;

[0039] Figure 10b for Figure 10a A magnified view of a section of M2;

[0040] Figure 11 for Figure 10a The heat exchanger is located inside the chassis and its cross-sectional view is as follows: Figure 3 Cross-sectional view as shown in the AA direction;

[0041] Figure 12 for Figure 10a The heat exchanger is located inside the chassis and its cross-sectional view is as follows: Figure 3 Cross-sectional view as shown in the BB direction;

[0042] Figure 13 for Figure 12 A cross-sectional view along the CC direction;

[0043] Figure 14 for Figure 12 A cross-sectional view along the DD direction;

[0044] Figure 15a This is a schematic diagram of the structure of the heat exchanger provided in the fourth embodiment of the present invention;

[0045] Figure 15b for Figure 15a A magnified view of a section of M3;

[0046] Figure 16 for Figure 15a The heat exchanger is located inside the chassis and its cross-sectional view is as follows: Figure 3 Cross-sectional view as shown in the AA direction;

[0047] Figure 17 for Figure 15a The heat exchanger is located inside the chassis and its cross-sectional view is as follows: Figure 3 Cross-sectional view as shown in the BB direction;

[0048] Figure 18 for Figure 17 Cross-sectional view along the EE direction;

[0049] Figure 19 for Figure 17 A cross-sectional view along the FF direction;

[0050] Figure 20a This is a schematic diagram of the structure of the heat exchanger provided in the fifth embodiment of the present invention;

[0051] Figure 20b for Figure 20a A magnified view of a section of M4;

[0052] Figure 21a A schematic diagram of the structure of the heat exchanger provided in the sixth embodiment of this utility model when the first air guide bridge and the second air guide bridge are not installed;

[0053] Figure 21b for Figure 21a The diagram shows a heat exchanger with a branch hot-end fan.

[0054] Figure 21c for Figure 21a A schematic diagram of the structure of the first branch heat exchange fin assembly;

[0055] Figure 21d A schematic diagram of the structure when the hot-end fan and cold-end fan of the branch circuit are piezoelectric fans;

[0056] Figure 22 A schematic diagram of the chassis of the control cabinet equipment provided by this utility model when the heat exchanger has a first air guide bridge and a second air guide bridge.

[0057] Figure 23 A top view of the heat exchanger provided in the sixth embodiment of this utility model when it is installed inside the chassis;

[0058] Figure 24a A schematic diagram of the structure of the heat exchanger provided in the sixth embodiment of this utility model when the first air guide bridge and the second air guide bridge are installed;

[0059] Figure 24b for Figure 24a A sectional view;

[0060] Figure 25a for Figure 23 The provided heat exchanger cross-sectional orientation is as follows: Figure 23 Cross-sectional view as shown in the GG direction;

[0061] Figure 25b for Figure 25a A magnified view of a section of M5;

[0062] Figure 25c for Figure 25a A magnified view of a section of M6;

[0063] Figure 26 for Figure 23 The provided heat exchanger cross-sectional view is as follows: Figure 23 Cross-sectional view as shown in the HH direction;

[0064] Figure 27a for Figure 26 Sectional view along direction II;

[0065] Figure 27b for Figure 27a A cross-sectional view along the JJ direction;

[0066] Figure 28a A schematic diagram of the structure of the heat exchanger provided in the seventh embodiment of this utility model when the heat exchanger shell, the first air guide bridge and the second air guide bridge are not installed;

[0067] Figure 28b for Figure 28a A schematic diagram of the structure of the first branch heat exchange fin assembly;

[0068] Figure 28c for Figure 28a Schematic diagram of the structure of the second branch heat exchange fin assembly;

[0069] Figure 29a The heat exchanger provided in the seventh embodiment of this utility model is equipped with a first air guide bridge and a second air guide bridge, and the cross-sectional direction is as follows: Figure 26 Cross-sectional view as shown in direction II;

[0070] Figure 29b for Figure 29a A magnified view of a section of M7;

[0071] Figure 30a A schematic diagram of the structure of the heat exchanger provided in the eighth embodiment of this utility model when the heat exchanger shell, the first air guide bridge and the second air guide bridge are not installed;

[0072] Figure 30b for Figure 30a A schematic diagram of the structure of the first branch heat exchange fin assembly or the second branch heat exchange fin assembly;

[0073] Figure 30c for Figure 30b A magnified view of a portion of the image;

[0074] Figure 31 A schematic diagram of the structure of the heat exchanger provided in the eighth embodiment of this utility model when the heat exchanger shell, the first air guide bridge and the second air guide bridge are installed;

[0075] Figure 32a for Figure 30a The provided heat exchanger cross-sectional view is as follows: Figure 23 Cross-sectional view as shown in the GG direction;

[0076] Figure 32b for Figure 32a A magnified view of a section of M8;

[0077] Figure 32c for Figure 32a A magnified view of a section of M9;

[0078] Figure 33a for Figure 32a A cross-sectional view along the KK direction;

[0079] Figure 33b for Figure 33a A magnified view of a section of M10;

[0080] Figure 33c for Figure 33a A magnified view of a section of M11.

[0081] Figure label:

[0082] Heat exchanger housing 1, first cavity 10, hot end air inlet side 11, hot end air inlet 111, hot end air outlet 112, cold end air inlet side 12, cold end air inlet 121, cold end air outlet 122, hot air flow cavity 13, hot air flow channel 131, cold air flow cavity 14, cold air flow channel 141, first end cover 15, flow guiding structure 151, first air flow hole 152, first air flow baffle 153;

[0083] Heat exchange fin 2, first narrow fin 21, first receiving area 211, second receiving area 212, third receiving area 213, fourth receiving area 214, fifth receiving area 215, sixth receiving area 216, first wide fin 22, first sealing structure 221, second sealing structure 222, third sealing structure 223, fourth sealing structure 224, fifth sealing structure 225, sixth sealing structure 226, first stepped structure 231, second stepped structure 232, third stepped structure 233, fourth stepped structure 234, fifth stepped structure 235, sixth stepped structure 236, second narrow fin 241, third narrow fin 242, second wide fin 25, fourth narrow fin 26, third wide fin 271, fourth wide fin 272, first branch opening 281, second branch opening 282, third branch opening 283, fourth branch opening 284;

[0084] Hot end fan 31, cold end fan 32, branch cold end fan 33, branch hot end fan 34;

[0085] First guide plate 41, first guide section 411, second guide section 412, second guide plate 42, third guide section 421, fourth guide section 422;

[0086] First branch heat exchange fin assembly 51, first vertical fin 511, first vertical heat sink 5110, first partition plate 5111, first intermediate plate 5112, first parallel fin 512, first parallel heat sink 5120, first short heat sink 5121, first long heat sink 5122, second branch heat exchange fin assembly 52, second vertical fin 521, second vertical heat sink 5210, second partition plate 5211, second intermediate plate 5212, second parallel fin 522, second parallel heat sink 5220, second short heat sink 5221, second long heat sink 5222;

[0087] First air guide bridge 61, second air guide bridge 62, first sealing cover 71, second sealing cover 72;

[0088] Heat exchanger 100, heat dissipation assembly 200, cooling fan 210, heat dissipation fins 220, base plate 2201, finned portion 2202, high heat generation module 300, heat-sensitive module 400, chassis 800, rear shell 810, rear shell air inlet 811, rear shell air outlet 812, branch air inlet 813, branch air outlet 814, front shell 820, front shell air inlet 821, front shell air outlet 822, first heat dissipation cavity 830, second heat dissipation cavity 831. Detailed Implementation

[0089] 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.

[0090] The first embodiment of this utility model provides a heat exchanger 100, such as Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of the structure of the heat exchanger provided in the first embodiment of the present invention when it has a heat exchanger shell. Figure 2 for Figure 1 The diagram shows a heat exchanger without a heat exchanger housing. In the accompanying drawings, the X and Y directions represent the horizontal direction of the heat exchanger, and the Z direction represents the vertical direction. The heat exchanger 100 includes: a heat exchanger housing 1 and heat exchange fins 2; the heat exchanger housing 1 is provided with a hot-end air inlet 111, a hot-end air outlet 112, a cold-end air inlet 121, and a cold-end air outlet 122; wherein the hot-end air inlet 111 and the cold-end air inlet 121 are located on opposite hot-end air inlet sides 11 and 12 on the heat exchanger housing 1, respectively; the hot-end air outlet 112 and the cold-end air outlet 122 are isolated from each other and spaced apart from the hot-end air inlet 111 and the cold-end air inlet 121, respectively; the heat exchange fins 2 are disposed inside the heat exchanger housing 1 along the height direction of the heat exchanger housing 1, located at the hot end... Between the hot end air inlet 111 and the cold end air inlet 121, the first cavity 10 inside the heat exchanger housing 1 is divided into a hot air flow cavity 13 and a cold air flow cavity 14 that are isolated from each other; the hot end air inlet 111 and the hot end air outlet 112 are connected to the hot air flow cavity 13; the cold end air inlet 121 and the cold end air outlet 122 are connected to the cold air flow cavity 14; the heat exchange fins 2 are used to exchange heat between the hot air flow entering the hot air flow cavity 13 and the cold air flow entering the cold air flow cavity 14; after heat exchange, the hot air flow is discharged from the heat exchanger through the hot end air outlet 112, and the cold air flow is discharged from the heat exchanger 100 through the cold end air outlet 122.

[0091] In this embodiment, heat exchange fins 2 are used to divide the first cavity 10, which is enclosed by the heat exchanger shell 1, inside the heat exchanger 100 into a hot airflow cavity 13 and a cold airflow cavity 14. The heat exchange fins 2 inside the heat exchanger 100 allow the hot airflow in the hot airflow cavity 13 and the cold airflow in the cold airflow cavity 14 to flow in their respective cavities, and to exchange heat through the heat exchange fins 2. When the hot and cold airflows exchange heat through the heat exchange fins 2, the heat conduction path is along the thin-walled thickness of the heat exchange fins 2, effectively reducing the length of the heat conduction path, resulting in lower thermal resistance and thus improving heat dissipation efficiency.

[0092] See Figure 1 and Figure 2 Hot air enters the hot airflow chamber 13 through the hot-end air inlet 111 on the hot-end air inlet side 11. After heat exchange inside the hot airflow chamber 13, it exits the heat exchanger 100 through the hot-end air outlet 112. Cold air enters the cold airflow chamber 14 through the cold-end air inlet 121 on the cold-end air inlet side 12. After heat exchange inside the cold airflow chamber 14, it exits the heat exchanger 100 through the cold-end air outlet 122. The hot and cold airflows are isolated from each other. The hot airflow circulates within the hot airflow chamber, and the cold airflow circulates within the cold airflow chamber. Heat exchange is completed between the two airflows as they pass through the heat exchanger, ensuring high flow and heat exchange efficiency while maintaining a high IP protection level for the electronic equipment.

[0093] This utility model also provides an electronic device, which will be described using the heat exchanger provided in the first embodiment as an example.

[0094] like Figures 3 to 4b As shown, Figure 3 This is a top view of the heat exchanger provided in the first embodiment of the present invention when it is installed inside the chassis. Figure 4a This is a schematic diagram of the chassis of the control cabinet equipment provided by this utility model. Figure 4b A schematic diagram of the internal structure of the control cabinet equipment provided by this utility model. Specifically, the electronic device can be a control cabinet device, including: a heat exchanger 100 and a chassis 800 provided in the first embodiment; the heat exchanger 100 is disposed inside the chassis 800 for dissipating heat from the high-heat-generating module 300 and the heat-sensitive module 400 inside the chassis; the heat exchanger 100 abuts against the rear shell 810 of the chassis 800; the cold end air inlet 121 of the heat exchanger 100 is connected to the rear shell air inlet 811 on the rear shell 810 to receive external cold airflow; the cold end air outlet 122 is connected to the rear shell air outlet 812 of the rear shell 810 to export the heat-exchanged cold airflow to the outside of the chassis 800; the hot end air inlet 111 and the hot end air outlet 112 of the heat exchanger 100 face the inside of the chassis 800, so as to receive the hot airflow generated by the high-heat-generating module 300 through the hot end air inlet 111, and export the heat-exchanged hot airflow to the inside of the chassis 800 through the hot end air outlet 112.

[0095] In this embodiment, the heat exchanger 100 is disposed inside the chassis 800. Hot air generated by the high-heat-generating module 300 inside the chassis 800 is drawn into the hot airflow chamber 13 through the hot-end air inlet 111; cold air from the external environment is drawn into the cold airflow chamber 14 through the rear shell air inlet 811 on the rear shell 810 and the cold-end air inlet 121. The hot and cold air flows exchange heat through the heat exchange fins 2. The hot air, after heat exchange, is discharged from the heat exchanger 100 through the hot-end air outlet 112 and flows back into the chassis 800, lowering the temperature inside the chassis 800 and thus dissipating heat for the heating module 300 and the heat-sensitive module 400, ensuring that both are within a safe temperature range. The cold air, after heat exchange, is discharged from the rear shell air outlet 812 of the rear shell 810 into the external environment through the cold-end air outlet 122, carrying heat away from the external environment.

[0096] In some embodiments of this utility model, see Figures 3 to 4b The chassis 800 has a front air inlet 821 and a front air outlet 822 on its front shell 820. It also includes a heat dissipation assembly 200, which divides the interior of the chassis 800 into a first heat dissipation cavity 830 and a second heat dissipation cavity 831 that are isolated from each other. The first heat dissipation cavity 830 is formed by the side of the heat dissipation assembly 200 facing the front shell 820, and a portion of the sidewalls of the front shell 820 and the chassis 800. The second heat dissipation cavity 831 is formed by the side of the heat dissipation assembly 200 facing the rear shell 810, the rear shell 810, and another portion of the sidewalls. The heat dissipation assembly 200 is positioned near the front shell 820 of the chassis 800, opposite to the front air inlet 821 and the front air outlet 822. The heat dissipation assembly 200 is located on one side of the second heat dissipation cavity 831 and is fitted against the high-heat module 300.

[0097] In this embodiment, the chassis 800 can also dissipate heat through a heat dissipation assembly 200, which divides the interior of the chassis 800 into a first heat dissipation cavity 830 and a second heat dissipation cavity 831 that are isolated from each other. See also Figure 3 The first heat dissipation cavity 830 is formed by the side of the heat dissipation assembly 200 facing the front shell 820, and a portion of the sidewalls of the front shell 820 and the chassis 800. Cold airflow from the external environment enters the first heat dissipation cavity 830 through the front shell air inlet 821 on the front shell 820, where it exchanges heat with the hot airflow in the second heat dissipation cavity 831, formed by the side of the heat dissipation assembly 200 facing the rear shell 810, the rear shell 810, and another portion of the sidewalls. After heat exchange, the cold airflow is discharged to the external environment through the front shell air outlet 822 on the front shell 820, carrying heat away from the environment. The heat exchanger cavity located in the second heat dissipation cavity 831 simultaneously performs heat exchange, working in conjunction with the heat dissipation assembly 200 to achieve dual heat exchange for the chassis 800, further improving the heat dissipation efficiency of the chassis 800.

[0098] The close contact between the high-heat-generating module 300 and the heat dissipation component 200 reduces the heat conduction path, thereby enhancing the cooling effect of the high-heat-generating module 300. Thermal interface materials such as thermal pads or thermal grease can be filled between the high-heat-generating module 300 and the heat dissipation component 200 to reduce contact thermal resistance and further enhance thermal reliability.

[0099] And see also Figure 3 and Figure 4b Both the high-heat-generating module 300 and the heat-sensitive module 400 are housed inside the second heat dissipation cavity 831. The second heat dissipation cavity 831 is a sealed cavity, ensuring a high IP rating (a parameter used to assess the protection capabilities of electrical equipment against dust and water), thus mitigating the problem of short circuits caused by dust, moisture, and other contaminants in the external environment affecting the high-heat-generating module 300 and the heat-sensitive module 400.

[0100] In some embodiments of this utility model, such as Figure 3 , Figure 4b , Figure 5 and Figure 6 As shown, Figure 5 for Figure 3 Cross-sectional view along the AA direction. Figure 6 for Figure 3 Cross-sectional view along the BB direction. The front casing has two air vents 822; the heat dissipation assembly 200 includes a cooling fan 210 and heat dissipation fins 220; the heat dissipation fins 220 abut against the inner wall of the chassis 800 on both sides along the length and width directions; see [reference needed]. Figure 4b The heat dissipation fins 220 include a substrate portion 2201 and a fin portion 2202; the high-heat-generating module 300 is attached to the substrate portion 2201. Meanwhile, the periphery of the base plate 2201 abuts against the inner wall of the chassis 800, thereby dividing the interior of the chassis 800 into a first heat dissipation cavity 830 and a second heat dissipation cavity 831, further achieving isolation between the first heat dissipation cavity 830 and the second heat dissipation cavity 831; multiple heat dissipation fins 220 are fixed to one side of the base plate 2201 located in the first heat dissipation cavity 830 and extend toward the front shell 820, and are arranged perpendicular to the base plate 2201; the high-heat module 300 is fitted with the heat dissipation fins 220 to reduce the temperature of the high-heat module 300; the front shell air inlet 821 is located in the middle of the front shell 820, and two front shell air outlets 822 are arranged on both sides of the front shell air inlet 821; the cooling fan 210 is arranged corresponding to the front shell air inlet 821 to draw in cool air from the front shell air inlet 821 and exhaust it from the two front shell air outlets 822. The top and bottom of the heat exchanger have a top gap area and a bottom gap area between them and the top and bottom of the chassis, respectively.

[0101] In this embodiment, cold air from the external environment enters the first heat dissipation cavity 830 through the front air inlet 821 in the middle of the front shell 820 under the action of the cooling fan 210. The cold air exchange heat with the hot air in the second heat dissipation cavity 831 and the high-heat-generating module 300 attached to the cooling fins 220 through the heat dissipation fins 220, reducing the temperature in the second heat dissipation cavity 831 so that the high-heat-generating module 300 and the heat-sensitive module 400 are within a safe temperature range. The cooled air after heat exchange is discharged to the external environment through the two front air outlets 822 located on both sides of the front air inlet 821, so as to carry the heat to the external environment. The top and bottom gap areas between the top and bottom of the heat exchanger 100 and the top and bottom of the chassis 800 can increase the contact area between the heat exchanger 100 and the hot air, thereby improving the heat dissipation efficiency to a certain extent.

[0102] In actual use, the top and bottom of the heat exchanger 100 can also abut against the top and bottom of the chassis 800 respectively, as long as the heat exchanger 100 can be fixed on the rear shell 810 of the chassis 800. There is no limit to the height of the heat exchanger.

[0103] The heat exchanger 100 provided in the first embodiment of this utility model, wherein, as Figure 2 , Figure 3 and Figure 7 As shown, Figure 7 for Figure 2 A partial enlarged view of M1. The heat exchange fins 2 can be bent into multiple Z-shaped structures arranged in a straight line; the intervals between the multiple protrusions with openings facing the hot airflow cavity 13 form a hot airflow channel 131; the intervals between the multiple protrusions with openings facing the cold airflow cavity 14 form a cold airflow channel 141. The heat exchange fins 2 abut against the inner walls of the heat exchanger shell 1, excluding the hot end air inlet side 11 and the cold end air inlet side 12, on both sides along the height direction and both sides along the width direction, respectively; the hot airflow cavity 13 is formed by the side of the heat exchange fins 2 facing the hot end air inlet side 11, the hot end air inlet side 11, and part of the sidewall of the heat exchanger shell 1; the cold airflow cavity 14 is formed by the side of the heat exchange fins 2 facing the cold end air inlet side 12, the cold end air inlet side 12, and part of the sidewall of the heat exchanger shell 1.

[0104] In this embodiment, the heat exchange fins 2 are bent into multiple Z-shaped sections arranged in a straight line, forming a hot airflow channel 131 and a cold airflow channel 141. The hot and cold airflows flowing within the hot airflow cavity 13 and the cold airflow cavity 14 can exchange heat at the end faces of the hot airflow channel 131 and the cold airflow channel 141, or through the sidewalls of the hot airflow channel 131 and the cold airflow channel 141. This increases the heat exchange area of ​​the hot and cold airflows, thereby enhancing the heat exchange effect and further improving the heat dissipation efficiency.

[0105] The heat exchange fins 2 abut against the inner walls of the heat exchanger housing 1, excluding the hot end air inlet side 11 and the cold end air inlet side 12, on both sides along the height and width directions, respectively. This ensures that the hot airflow chamber 13 and the cold airflow chamber 14 are mutually isolated, effectively improving the short circuit problem caused by dust, water vapor, and other pollutants in the external environment to the high-heat-generating module 300 and the heat-sensitive module 400.

[0106] Under the action of heat exchange fins 2, although the cold air and the hot air do not come into direct contact, they form a state of mutual penetration and encirclement, which is conducive to making the heat exchange process more complete.

[0107] In the heat exchanger 100 provided in the first embodiment of this utility model, such as Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown. The hot end air inlet 111 and the cold end air inlet 121 are respectively equipped with a hot end fan 31 and a cold end fan 32; the hot end fan 31 is used to guide the hot airflow from the hot end air inlet 111 into the hot airflow cavity 13; the cold end fan 32 is used to guide the cold airflow from the cold end air inlet 121 into the cold airflow cavity 14.

[0108] In this embodiment, see Figure 2 Under the action of the hot-end fan 31, the hot airflow in the second heat dissipation cavity 831 enters the hot airflow cavity 13 through the hot-end air inlet 111, and flows from top to bottom along the hot airflow channel 131, transferring heat to the heat exchange fins 2. As the flow continues, the temperature of the hot airflow gradually decreases, and finally flows back into the second heat dissipation cavity 831 through the hot-end air outlet 112. This achieves cooling and heat dissipation for the high-heat-generating module 300 and the heat-sensitive module 400.

[0109] Under the action of the cold-end fan 32, the cold airflow from the outside environment enters the cold airflow chamber 14 through the cold-end air inlet 121 and flows from top to bottom along the cold airflow channel 141, absorbing the heat from the heat exchange fins 2. As the flow continues, the heat in the heat exchange fins 2 (that is, the heat transferred from the hot airflow) is continuously absorbed by the cold airflow. Finally, the cold airflow is discharged to the outside environment through the cold-end air outlet 122, so as to carry the heat to the outside environment.

[0110] The hot-end fan 31 and the cold-end fan 32 can effectively increase the speed of hot and cold air circulation, further improving the heat exchange effect and heat dissipation efficiency.

[0111] The heat exchanger 100 provided in the first embodiment of this utility model may further include: a first guide plate 41 and a second guide plate 42; wherein, the first guide plate 41 is located in the hot air flow chamber 13 and is disposed between the heat exchange fins 2 and the hot end air inlet side 11, so as to guide the hot air flow after heat exchange to the hot end air outlet 112; the second guide plate 42 is located in the cold air flow chamber 14 and is disposed between the heat exchange fins 2 and the cold end air inlet side 12, so as to guide the cold air flow after heat exchange to the cold end air outlet 122. The first guide plate 41 is provided with a first guide portion 411 and a second guide portion 412 at its first and second ends along the height direction, respectively; the second guide plate 42 is provided with a third guide portion 421 and a fourth guide portion 422 at its first and second ends along the height direction, respectively; the first guide portion 411 of the first guide plate 41 is located below the hot end fan 31; the second guide portion 412 of the first guide plate 41 is located above the hot end air outlet 112; the third guide portion 421 of the second guide plate 42 is located below the cold end fan 32; the fourth guide portion 422 of the second guide plate 42 is located above the cold end air outlet 122.

[0112] In this embodiment, a first guide plate 41 is provided in the hot airflow cavity 13 between the heat exchange fin 2 and the hot end air inlet side 11, and a second guide plate 42 is provided in the cold airflow cavity 14 between the heat exchange fin 2 and the cold end air inlet side 12. This guides the airflow, ensuring that most of the airflow flows within the hot airflow channel 131 or the cold airflow channel 141, with a small portion flowing at the boss end face. All airflow is close to the surface of the heat exchange fin 2. When the airflow flows near the wall, it helps to break the boundary layer and enhance the heat exchange effect. The boss end face refers to each bend in the heat exchange fin 2, and each bend's boss end face forms a gap with the hot end air inlet side 11 or the cold end air inlet side 12, allowing some hot or cold airflow to flow within this gap.

[0113] When the hot airflow flows in the gap between the boss end face near the hot end air inlet side 11 and the hot end air inlet side 11, the hot airflow can exchange heat with the cold airflow in the cold airflow channel 141 located on the other side of the boss end face through the boss end face near the hot end air inlet side 11.

[0114] When the cold airflow flows within the gap between the protruding end face near the cold end air inlet side 12 and the cold end air inlet side 12, the cold airflow can exchange heat with the hot airflow in the hot airflow channel 131 located on the other side of the protruding end face. This allows the cold airflow and hot airflow to exchange heat both at the protruding end face and within the hot airflow channel 131 and the cold airflow channel 141.

[0115] And see also Figure 2 , Figure 5 and Figure 6Furthermore, a first guide section 411 and a second guide section 412 can be respectively provided at both ends of the first guide plate 41, and a third guide section 421 and a fourth guide section 422 can be respectively provided at both ends of the second guide plate 42. This makes both the first guide plate 41 and the second guide plate 42 arch-shaped to change the direction of airflow. In this embodiment, the first guide section 411 and the third guide section 421 are both right angles. At this time, less airflow changes direction at this point, ensuring that the airflow always flows in close contact with the surface of the heat exchange fins. The second guide section 412 and the fourth guide section 422 are at an angle, which plays a certain transition role in the change of airflow direction and reduces flow loss. In actual use, the first guide section 411 and the second guide section 412 can be chosen to be symmetrical according to actual needs. Both can be right angles or angles. The arrangement of the third guide section 421 and the fourth guide section 422 is the same as that of the first guide section 411 and the second guide section 412.

[0116] In the heat exchanger 100 provided in the first embodiment of this utility model, a hot-end air inlet 111 is disposed on the upper part of the hot-end air inlet side 11; a hot-end air outlet 112 is disposed on the lower part of the hot-end air inlet side 11 away from the hot-end air inlet 111; a cold-end air inlet 121 is disposed on the upper part of the cold-end air inlet side 12, symmetrically positioned with respect to the hot-end air inlet 111; and a cold-end air outlet 122 is disposed on the lower part of the cold-end air inlet side 12, symmetrically positioned with respect to the hot-end air outlet 112. In this embodiment, the hot-end air inlet 111 and the cold-end air inlet 121 are arranged correspondingly, which is a co-current arrangement for the interaction of hot and cold airflow.

[0117] In the second embodiment of this utility model, as Figure 8a and Figure 8b As shown, Figure 8a This is a schematic diagram of the structure of the heat exchanger provided in the second embodiment of the present invention. Figure 8b for Figure 8a A perspective view of the heat exchanger 100. The hot end air inlet 111 is located on the upper part of the hot end air inlet side 11; the hot end air outlet 112 is located on the bottom of the heat exchanger housing 1; the cold end air inlet 121 is located on the upper part of the cold end air inlet side 12, opposite to the hot end air inlet 111; and the cold end air outlet 122 is located on the bottom of the heat exchanger housing 1.

[0118] In this embodiment, the hot-end air outlet 112 and the cold-end air outlet 122 are both located at the bottom of the heat exchanger housing 1. When the air outlets are located at the bottom of the heat exchanger housing 1, the first guide plate 41 and the second guide plate 42 can be further elongated to extend to the bottom of the heat exchanger housing 1. This increases the convection time of the airflow in the hot airflow channel 131 or the cold airflow channel 141 and the flow time at the boss end face, thus enhancing heat transfer.

[0119] In the heat exchanger 100 provided in the second embodiment of this utility model, such as Figure 8a , Figure 8c , Figure 8d and Figure 8e As shown, Figure 8c for Figure 8b The diagram shows a bottom view of the heat exchanger. Figure 8d for Figure 8c A magnified view of a portion of the image. Figure 8e for Figure 8d A schematic diagram of the structure with a heat exchanger housing. The heat exchanger housing 1 has an opening at its bottom, and a first end cap 15 and a flow guide structure 151 extending from the bottom are provided at the bottom of the heat exchanger housing 1. The first end cap 15 covers the bottom of the heat exchange fins 2. The opening between the side of the first end cap 15 near the hot-end air inlet side 11 and the hot-end air inlet side 11 forms a hot-end air outlet 112. The flow guide structure 151 extends beyond the bottom of the heat exchanger housing 1 and towards the cold-end air inlet side 12. The flow guide structure 151 has two triangular side plates and an inclined plate. 1 is slanted, with one side of the slanted plate connected to the first end cover 15 and the other side connected to the cold end air inlet side 12; one side of the triangular side plate is connected to the slanted plate, and the other two sides of the triangular side plate are connected to the bottom of the heat exchanger housing 1 and the cold end air inlet side 12, respectively; the side of the first end cover 15 near the cold end air inlet side 12 has an opening between it and the cold end air inlet side 12; one end of the flow guiding structure 151 is connected to the opening, and the other end is connected to the rear shell air outlet 812 on the rear shell 810 of the chassis 800, forming a cold end air outlet 122.

[0120] In this embodiment, the flow guiding structure 151 can guide and intervene in the flow direction of the cold airflow exiting from the cold airflow cavity 14, so as to avoid the formation of a return air path between the cold end air inlet 121 and the cold end air outlet 122, thereby ensuring that the cold airflow flowing into the cold end air inlet 121 is all fresh cold airflow, thereby improving heat exchange efficiency. Without the flow guiding structure 151, under the negative pressure suction of the cold end fan 32, some of the heated cold airflow may be sucked in, which will affect the coldness of the cold airflow, thereby reducing the heat transfer temperature difference between the hot and cold airflows and having an adverse effect on heat exchange.

[0121] In the heat exchanger 100 provided in the second embodiment of this utility model, see [link to relevant documentation]. Figures 8a to 8h , Figure 8f for Figure 8a The heat exchanger shown is not a schematic diagram of the heat exchanger housing. Figure 8g for Figure 8f A bottom view of the heat exchanger shown; Figure 8h for Figure 8gA partial enlarged view. The first end cap 15 has a first airflow hole 152; the area on the first end cap 15 other than the first airflow hole 152 is formed as a first airflow baffle 153; the first airflow hole 152 is connected to the hot airflow chamber 13; the first airflow baffle 153 is used to close the cold airflow chamber 14.

[0122] In this embodiment, by providing a first airflow hole 152 on the first end cover 15, the speed and flow rate of hot air circulation can be increased, thereby improving heat dissipation efficiency. Furthermore, the first airflow baffle 153 can prevent cold airflow from entering the chassis 800, thereby improving the airtightness of the chassis 800.

[0123] When the heat exchanger 100 provided in the second embodiment of this utility model is applied to the control cabinet equipment in the foregoing embodiments, see [link to relevant documentation]. Figure 9a and Figure 9b , Figure 9a for Figure 8a The heat exchanger is located inside the chassis and its cross-sectional view is as follows: Figure 3 A cross-sectional view shown in the AA direction. Figure 9b for Figure 8a The heat exchanger is located inside the chassis and its cross-sectional view is as follows: Figure 3 A cross-sectional view shown in the BB direction. The hot end air inlet 111 of the heat exchanger 100 is located on the upper part of the hot end air inlet side 11; the hot end air outlet 112 is located on the bottom of the heat exchanger housing 1; the cold end air inlet 121 is located on the upper part of the cold end air inlet side 12, opposite to the hot end air inlet 111; the cold end air outlet 122 is located on the bottom of the heat exchanger housing 1; the bottom of the heat exchanger housing 1 has a guide structure 151 extending from the bottom; the extended end of the guide structure 151 is flush with the lower edge of the rear housing air outlet 812, and the bottom edge of the cold end air inlet side 12 is flush with the upper edge of the rear housing air outlet 812.

[0124] In this embodiment, the hot airflow inside the heat exchanger 100, under the action of the elongated guide structure 151, always flows close to the wall of the heat exchange fins 2, and finally flows out at the hot end outlet 112 at the bottom and enters the second heat dissipation cavity 831 to cool down the high-heat module 300 and the heat-sensitive module 400.

[0125] The cold airflow, under the action of the elongated guide structure 151, always flows close to the wall of the heat exchange fins 2, and finally flows out into the guide structure 151 at the bottom opening. Under the action of the guide structure 151, the heated cold airflow will flow away from the rear shell air inlet 811, thereby avoiding the formation of "return air".

[0126] In the third embodiment provided by this utility model, such as Figure 10a and Figure 10bAs shown, Figure 10a This is a schematic diagram of the structure of the heat exchanger provided in the third embodiment of the present invention. Figure 10b for Figure 10a A partial enlarged view of M2. The heat exchange fins 2 include: a first narrow fin 21 and a first wide fin 22 arranged sequentially along the height direction; the first wide fin 22 is fixed to the bottom plate of the heat exchanger shell 1; the side of the first narrow fin 21 near the hot end air inlet side 11 and the side of the first wide fin 22 near the hot end air inlet side 11 form a first stepped structure 231; a hot end fan 31 is disposed within a first receiving area 211 enclosed by the first stepped structure 231 and the heat exchanger shell 1; the side of the first narrow fin 21 near the cold end air inlet side 12 and the side of the first wide fin 22 near the cold end air inlet side 12 form a second stepped structure 232; the cold end fan 32 is disposed within a second receiving area 212 enclosed by the second stepped structure 232 and the heat exchanger shell 1.

[0127] In this embodiment, due to the presence of the first stepped structure 231 and the second stepped structure 232, the hot-end fan 31 and the cold-end fan 32 can be respectively disposed inside the first receiving area 211 and the second receiving area 212. This allows the first wide fin 22 to be disposed closer to the heat exchanger housing 1. Therefore, the airflow guiding structure 151 can be eliminated, and the airflow can be guided solely by the heat exchanger housing 1. The first narrow fin 21 and the first wide fin 22 can be processed according to the actual situation, for example, they can be spliced ​​together by welding, or they can be directly integrally formed using additive manufacturing methods such as 3D printing. As long as the first narrow fin 21 and the first wide fin 22 are fixedly connected, it is acceptable.

[0128] In the heat exchanger 100 provided in the third embodiment of this utility model, such as Figure 10a and Figure 10b As shown, each hot airflow channel 131 of the first narrow fin 21 is connected to a portion of the hot airflow channels 131 of the first wide fin 22; each cold airflow channel 141 of the first narrow fin 21 is connected to a portion of the cold airflow channels 141 of the first wide fin 22; on the first stepped structure 231, a first sealing structure 221 is provided at the top of the other cold airflow channels 141 in the first wide fin 22 that are not connected to the cold airflow channels 141 of the first narrow fin 21; on the second stepped structure 232, a second sealing structure 222 is provided at the top of the other hot airflow channels 131 in the first wide fin 22 that are not connected to the hot airflow channels 131 of the first narrow fin 21.

[0129] In this embodiment, a first sealing structure 221 is provided at the top of the cold airflow channels 141 in the first wide fin 22 that are not connected to the cold airflow channels 141 in the first narrow fin 21; and a second sealing structure 222 is provided at the top of the hot airflow channels 131 in the first wide fin 22 that are not connected to the hot airflow channels 131 in the first narrow fin 21. This ensures mutual isolation between the hot airflow chamber 13 and the cold airflow chamber 14. This improves the problem of short circuits caused by dust, moisture, and other pollutants in the external environment affecting the high-heat module 300 and the heat-sensitive module 400.

[0130] In the heat exchanger 100 provided in the third embodiment of this utility model, see [link to relevant documentation]. Figure 11 and Figure 12 , Figure 11 for Figure 10a The heat exchanger is located inside the chassis and its cross-sectional view is as follows: Figure 3 A cross-sectional view shown in the AA direction. Figure 12 for Figure 10a The heat exchanger is located inside the chassis and its cross-sectional view is as follows: Figure 3 The cross-sectional view is shown in the BB direction. After entering the hot airflow chamber 13, the hot airflow flows from top to bottom, gradually transitioning from the hot airflow channel 131 of the first narrow fin 21 to the hot airflow channel 131 of the first wide fin 22, forming a "gradually expanding" airflow channel. This widens the flow channel after the hot airflow passes through the first stepped structure 231 and the second stepped structure 232, allowing the hot airflow to expand from the center to both sides, thus expanding the heat exchange area. In other words, within the limited heat exchange chamber space, the heat exchange area between the heat exchange fins 2 and the airflow is maximized. Furthermore, during the above flow process, the hot airflow always flows close to the surface of the heat exchange fins 2, which helps to break the boundary layer and enhance flow and heat exchange efficiency. Simultaneously, the gradually expanding airflow channel enhances the local airflow disturbance within the hot airflow channel 131, helping to enhance the local convective heat transfer coefficient and strengthen heat transfer. The temperature of the hot airflow after heat exchange is reduced, and it flows out from the hot end air outlet 112 and enters the chassis 800 to cool down the high-heat module 300 and the heat-sensitive module 400.

[0131] See Figure 12 The flow pattern of cold air is similar to that of hot air, so we will not go into too much detail here. Finally, it is discharged to the outside environment through the cold end outlet 122.

[0132] During the aforementioned flow process, a "co-current" airflow relationship is formed between the hot and cold airflows.

[0133] Through the "gradual expansion" air duct form and the "co-current" air duct relationship, the convective heat transfer capacity between the hot airflow and the heat exchange fins 2, and between the cold airflow and the heat exchange fins 2, is enhanced to a certain extent, effectively strengthening the overall heat transfer capacity.

[0134] See Figure 13 and Figure 14 , Figure 13 for Figure 12 Sectional view in the CC direction, Figure 14 for Figure 12 A cross-sectional view along the DD direction. Figure 14 The zigzag lines in the diagram indicate the airflow direction, which is perpendicular to the paper and flows inwards. During the flow, both hot and cold airflows remain close to the surface of the heat exchange fins, effectively enhancing the overall heat exchange capacity.

[0135] In the fourth embodiment of this utility model, as Figure 15a As shown, Figure 15a This is a schematic diagram of the structure of a heat exchanger provided in the fourth embodiment of the present invention. The heat exchanger 100 has a hot-end air inlet 111 located at the upper part of the hot-end air inlet side 11; a hot-end air outlet 112 located at the lower part of the hot-end air inlet side 11 away from the hot-end air inlet 111; a cold-end air inlet 121 located at the lower part of the cold-end air inlet side 12, symmetrically positioned with respect to the hot-end air outlet 112; and a cold-end air outlet 122 located at the upper part of the cold-end air inlet side 12, symmetrically positioned with respect to the hot-end air inlet 111.

[0136] In this embodiment, the hot-end air inlet 111 is correspondingly arranged with the cold-end air outlet 122, and the hot-end air outlet 112 is correspondingly arranged with the cold-end air inlet 121. This causes the hot and cold airflows to flow in opposite directions within the heat exchanger 100, forming a counter-flow airflow relationship. This effectively enhances the convective heat transfer capacity between the hot and cold airflows, thereby improving heat exchange efficiency.

[0137] In the heat exchanger 100 provided in the fourth embodiment of this utility model, as follows: Figure 15a and Figure 15b As shown, Figure 15b for Figure 15aA partial enlarged view of M3. The heat exchange fins 2 include: a second narrow fin 241, a second wide fin 25, and a third narrow fin 242 arranged sequentially along the height direction; the third narrow fin 242 is fixed to the base plate of the heat exchanger housing 1; the side of the second narrow fin 241 near the hot end air inlet side 11 and the side of the second wide fin 25 near the hot end air inlet side 11 form a third stepped structure 233; the side of the second narrow fin 241 near the cold end air inlet side 12 is flush with the side of the second wide fin 25 near the cold end air inlet side 12; hot end fan 3. 1. It is disposed within the third receiving area 213 enclosed by the third stepped structure 233 and the heat exchanger shell 1; the third narrow fin 242 is arranged with the side near the cold end air inlet side 12 and the side of the second wide fin 25 near the cold end air inlet side 12 to form a fourth stepped structure 234; the side of the third narrow fin 242 near the hot end air inlet side 11 is flush with the side of the second wide fin 25 near the hot end air inlet side 11; the cold end fan 32 is disposed within the fourth receiving area 214 enclosed by the fourth stepped structure 234 and the heat exchanger shell 1.

[0138] In this embodiment, due to the presence of the third step structure 233 and the fourth step structure 234, the hot-end fan 31 and the cold-end fan 32 can be respectively disposed within the third receiving area 213 and the fourth receiving area 214. This allows the second wide fin 25 to be disposed closer to the heat exchanger housing 1. Therefore, the flow guiding structure 151 can be eliminated, and the airflow can be guided solely by the heat exchanger housing 1. The second narrow fin 241, the second wide fin 25, and the third narrow fin 242 can be processed according to the actual situation. For example, they can be joined together by welding or directly integrally formed using additive manufacturing methods such as 3D printing. The key is to ensure that the second narrow fin 241 and the third narrow fin 242 are fixedly connected to both ends of the second wide fin 25.

[0139] In the heat exchanger 100 provided in the fourth embodiment of this utility model, as follows: Figure 15a and Figure 15bAs shown, each hot airflow channel 131 of the second narrow fin 241 is connected to a portion of the hot airflow channel 131 of the second wide fin 25; each cold airflow channel 141 of the second narrow fin 241 is connected to a portion of the cold airflow channel 141 of the second wide fin 25; each hot airflow channel 131 of the third narrow fin 242 is connected to a portion of the hot airflow channel 131 of the second wide fin 25; each cold airflow channel 141 of the third narrow fin 242 is connected to a portion of the cold airflow channel 141 of the second wide fin 25; on the third stepped structure 233, a third sealing structure 223 is provided at the top of the other cold airflow channels 141 in the second wide fin 25 that are not connected to the cold airflow channels 141 of the second narrow fin 241; on the fourth stepped structure 234, a fourth sealing structure 224 is provided at the bottom of the other hot airflow channels 131 in the second wide fin 25 that are not connected to the hot airflow channels 131 of the third narrow fin 242.

[0140] In this embodiment, a third sealing structure 223 is provided at the top of the other cold airflow channels 141 in the second wide fin 25 that are not connected to the respective cold airflow channels 141 of the second narrow fin 241; and a fourth sealing structure 224 is provided at the top of the other hot airflow channels 131 in the second wide fin 25 that are not connected to the respective hot airflow channels 131 of the third narrow fin 242. This ensures mutual isolation between the hot airflow chamber 13 and the cold airflow chamber 14. This improves the short-circuit problem caused by dust, moisture, and other pollutants in the external environment affecting the high-heat module 300 and the heat-sensitive module 400.

[0141] In the heat exchanger 100 provided in the fourth embodiment of this utility model, see... Figure 16 and Figure 17 , Figure 16 for Figure 15a The heat exchanger is located inside the chassis and its cross-sectional view is as follows: Figure 3 Cross-sectional view as shown in the AA direction; Figure 17 for Figure 15a The heat exchanger is located inside the chassis and its cross-sectional view is as follows: Figure 3This is a cross-sectional view shown in the BB direction. After the hot airflow enters the hot airflow chamber 13, it flows from top to bottom. At the position of the second narrow fin 241, the hot airflow first gradually transitions from the hot airflow channel 131 of the second narrow fin 241 to the hot airflow channel 131 of the second wide fin 25, forming a "gradually expanding" airflow channel. Then, at the position of the third narrow fin 242, it gradually transitions from the hot airflow channel 131 of the second wide fin 25 to the hot airflow channel 131 of the third narrow fin 242, forming a "gradually contracting" airflow channel, thus forming a "gradually expanding and contracting" airflow channel overall. The gradually expanding and contracting flow enhances the turbulence of the local airflow within the channel, which helps to enhance the local convective heat transfer coefficient and strengthen heat transfer. At the same time, within the limited hot airflow chamber 13 and cold airflow chamber 14, the heat transfer area between the heat transfer fins 2 and the fluid is maximized. In addition, the hot airflow always flows close to the surface of the heat transfer fins 2, which helps to break the boundary layer and enhance flow and heat transfer efficiency. The temperature of the hot airflow after heat exchange is reduced, and it flows out from the hot end air outlet 112 and enters the chassis 800 to cool down the high-heat module 300 and the heat-sensitive module 400.

[0142] See Figure 17 The cold air flows from bottom to top, which is the opposite of the hot air; however, its form is similar to that of the hot air, so we will not go into too much detail here. Finally, it is discharged to the outside environment through the cold end outlet 122.

[0143] During the aforementioned flow process, a counter-current airflow relationship is formed between the hot and cold airflows.

[0144] By using a "gradually expanding and contracting" air duct design and a "counter-flow" air duct relationship, the convective heat transfer capacity between the hot airflow and the heat exchange fins 2, as well as between the cold airflow and the heat exchange fins 2, is enhanced to a certain extent, which helps to strengthen the overall heat transfer capacity.

[0145] See Figure 18 and Figure 19 , Figure 18 for Figure 17 Sectional view along the EE direction. Figure 19 for Figure 17 A cross-sectional view along the FF direction. Figure 18 and Figure 19 In the diagram, the hot airflow bend indicates the direction of the hot airflow flowing inwards perpendicular to the paper, while the cold airflow bend indicates the direction of the cold airflow flowing outwards perpendicular to the paper.

[0146] In the fifth embodiment of this utility model, the positions of the hot-end air inlet 111, the hot-end air outlet 112, the cold-end air inlet 121, and the cold-end air outlet 122 are the same as in the fourth embodiment. Figure 20a and Figure 20b As shown, Figure 20aThis is a schematic diagram of the structure of the heat exchanger provided in the fifth embodiment of the present invention. Figure 20b for Figure 20a A partial enlarged view of M4. The heat exchange fins 2 include: a third wide fin 271, a fourth narrow fin 26, and a fourth wide fin 272 arranged sequentially along the height direction; the third wide fin 271 is fixed to the base plate of the heat exchanger housing 1; the side of the fourth narrow fin 26 near the hot end air inlet 11 forms a fifth stepped structure 235 with the side of the third wide fin 271 near the hot end air inlet 11; the side of the fourth narrow fin 26 near the cold end air inlet 12 is flush with the side of the third wide fin 271 near the cold end air inlet 12; a hot end fan. 31, disposed within the fifth receiving area 215 enclosed by the fifth step structure 235 and the heat exchanger shell 1; the side of the fourth narrow fin 26 near the cold end air inlet side 12 and the side of the fourth wide fin 272 near the cold end air inlet side 12 form the sixth step structure 236; the side of the fourth narrow fin 26 near the hot end air inlet side 11 and the side of the fourth wide fin 272 near the hot end air inlet side 11 are flush; the cold end fan 32 is disposed within the sixth receiving area 216 enclosed by the sixth step structure 236 and the heat exchanger shell 1.

[0147] In this embodiment, the widths of the third wide fin 271 and the fourth wide fin 272 are wider than the fourth narrow fin 26. Therefore, the third guide plate and the fourth guide plate can be respectively provided in the fifth receiving area 215 and the sixth receiving area 216 to guide the airflow. The third guide plate and the fourth guide plate can use the same structure as the first guide plate 41 and the second guide plate 42, which will not be described in detail here. The third wide fin 271, the fourth narrow fin 26 and the fourth wide fin 272 can be processed according to the actual situation. For example, they can be spliced ​​into one piece by welding, or they can be directly integrally formed by additive manufacturing methods such as 3D printing. As long as the third wide fin 271 and the fourth wide fin are fixedly connected to both ends of the fourth narrow fin 26, it is acceptable.

[0148] In the heat exchanger provided in the fifth embodiment of this utility model, such as Figure 20a and Figure 20bAs shown, each hot airflow channel 131 of the fourth narrow fin 26 is connected to a portion of the hot airflow channels 131 of the third wide fin 271 and the fourth wide fin 272; each cold airflow channel 141 of the fourth narrow fin 26 is connected to a portion of the cold airflow channels 141 of the third wide fin 271 and the fourth wide fin 272; on the fifth stepped structure 235, a fifth sealing structure 225 is provided at the top of the other cold airflow channels 141 of the third wide fin 271 that are not connected to the cold airflow channels 141 of the fourth narrow fin 26; on the sixth stepped structure 236, a sixth sealing structure 226 is provided at the bottom of the other hot airflow channels 131 of the fourth wide fin 272 that are not connected to the hot airflow channels 131 of the fourth narrow fin 26.

[0149] In this embodiment, a fifth sealing structure 225 is provided at the top of the cold airflow channels 141 in the third wide fin 271 that are not connected to the cold airflow channels 141 of the fourth narrow fin 26; and a sixth sealing structure 226 is provided at the bottom of the other hot airflow channels 131 in the fourth wide fin 272 that are not connected to the hot airflow channels 131 of the fourth narrow fin 26. This ensures mutual isolation between the hot airflow chamber 13 and the cold airflow chamber 14. This improves the problem of short circuits caused by dust, moisture, and other pollutants in the external environment affecting the high-heat module 300 and the heat-sensitive module 400.

[0150] In the sixth embodiment of this utility model, the positions of the hot-end air inlet 111, the hot-end air outlet 112, the cold-end air inlet 121, and the cold-end air outlet 122, as well as the structure of the heat exchange fins 2, are the same as in the fifth embodiment. Figures 21a to 21c As shown, Figure 21a A schematic diagram of the structure of the heat exchanger provided in the sixth embodiment of this utility model when the first air guide bridge and the second air guide bridge are not installed; Figure 21b for Figure 21a The diagram shows a heat exchanger with a branch hot-end fan. Figure 21c for Figure 21aA schematic diagram of the structure of the first branch heat exchange fin assembly. The heat exchanger 100 may further include: a first branch heat exchange fin assembly 51, a second branch heat exchange fin assembly 52, a first air guide bridge 61, and a second air guide bridge 62; the left side wall of the heat exchanger housing 1, perpendicular to the hot end air inlet side 11 and the cold end air inlet side 12, is provided with a first branch opening 281 and a second branch opening 282; the right side wall of the heat exchanger housing 1, perpendicular to the hot end air inlet side 11 and the cold end air inlet side 12, is provided with a third branch opening 283 and a fourth branch opening 284; the first branch heat exchange fin assembly 51 is disposed within the fifth receiving area 215; both sides of the first branch heat exchange fin assembly 51 are exposed through the first branch opening 281 and the third branch opening 283 respectively, for introducing cold airflow to interact with the hot airflow cavity 13. The first branch heat exchange fin assembly 52 is located in the sixth receiving area 216. The two sides of the second branch heat exchange fin assembly 52 are exposed through the second branch opening 282 and the fourth branch opening 284, respectively, to introduce hot airflow for heat exchange with the cold airflow in the cold airflow cavity 14. The first air guide bridge 61 has its first end connected to the first branch heat exchange fin assembly 51 through the first branch opening 281 and its second end connected to the outside cold airflow, for introducing cold airflow into the first branch heat exchange fin assembly 51. The second air guide bridge 62 has its first end connected to the first branch heat exchange fin assembly 51 through the third branch opening 283 and its second end connected to the outside cold airflow, for discharging cold airflow out of the first branch heat exchange fin assembly 51.

[0151] In this embodiment, a first branch heat exchange fin assembly 51, a second branch heat exchange fin assembly 52, a first air guide bridge 61, and a second air guide bridge 62 are provided. The two sides of the first branch heat exchange fin assembly 51 are connected to the first air guide bridge 61 and the second air guide bridge 62 through a first branch opening 281 and a third branch opening 283, respectively. Cold airflow from the external environment can flow into the first branch heat exchange fin assembly 51 through the first air guide bridge 61, exchange heat with the hot airflow in the hot airflow chamber 13, and then be guided out to the external environment through the second air guide bridge 62, thus carrying heat to the external environment.

[0152] The two sides of the second branch heat exchange fin assembly 52 are exposed through the second branch opening 282 and the fourth branch opening 284, respectively. This allows the hot airflow inside the chassis 800 to be introduced into the second branch heat exchange fin assembly 52 through the second branch opening 282, where it exchanges heat with the cold airflow inside the cold airflow chamber 14. The hot airflow then flows back into the chassis 800 through the fourth branch opening 284, thus cooling the high-heat module 300 and the heat-sensitive module 400.

[0153] By increasing the introduction of both hot and cold airflows, the circulation frequency between the hot and cold airflows is increased, and the heat exchange area between them is also enlarged. This effectively improves heat dissipation efficiency.

[0154] In the heat exchanger 100 provided in the sixth embodiment of this utility model, such as Figures 21a to 24b As shown, Figure 22 A schematic diagram of the chassis structure of the control cabinet equipment provided by this utility model, wherein the heat exchanger has a first air guide bridge and a second air guide bridge. Figure 23 This is a top view of the heat exchanger provided in the sixth embodiment of the present invention when it is installed inside the chassis. Figure 24a This is a schematic diagram of the structure of the heat exchanger with the first and second air guide bridges installed according to the sixth embodiment of the present invention. Figure 24b for Figure 24a A cross-sectional view. The first branch heat exchange fin assembly 51 and the second branch heat exchange fin assembly 52 both include: vertical fins 511 / 521, parallel fins 512 / 522, and sealing covers 71 / 72; see also... Figure 21c Vertical fins 511 / 521 include: partition plates 5111 / 5211 and a plurality of vertical heat dissipation plates 5110 / 5210 extending from the first side of the partition plates 5111 / 5211 away from the heat exchange fins 2; parallel fins 512 / 522 include: a plurality of parallel heat dissipation plates 5120 / 5220 extending from the second side of the partition plates 5111 / 5211 toward the heat exchange fins 2; sealing covers 71 / 72 covering the side of vertical fins 511 / 521 away from the heat exchange fins 2; a first air guide bridge 61, the first end of which is connected to the first vertical fin 511 of the first branch heat exchange fin assembly 51 through a first branch opening 281; and a second air guide bridge 62, the first end of which is connected to the first vertical fin 511 of the first branch heat exchange fin assembly 51 through a third branch opening 283. The first air guide bridge 61 or the second air guide bridge 62 is equipped with a branch cold end fan 33 inside; the second vertical fin 521 is equipped with a branch hot end fan 34 on the side near the second branch opening 282 or the fourth branch opening 284.

[0155] In this embodiment, the first branch heat exchange fin assembly 51 includes: a first vertical fin 511, a first parallel fin 512, and a first sealing cover 71. The first vertical fin 511 and the first parallel fin 512 are isolated from each other by a first partition plate 5111, and the first sealing cover 71 covers the side of the first vertical fin 511 away from the heat exchange fin 2. The two sides of the first vertical fin 511 are connected to the external environment through a first air guide bridge 61 and a second air guide bridge 62, enabling cold airflow to be introduced into the first branch heat exchange fin assembly 51 and exchange heat with the hot airflow in the first branch heat exchange fin assembly 51. The first parallel fin 512 is connected to the hot airflow cavity 13, enabling the hot airflow in the hot airflow cavity 13 to be introduced into the first branch heat exchange fin assembly 51.

[0156] The second branch heat exchange fin assembly 52 includes a second vertical fin 521, a second parallel fin 522, and a second sealing cover 72. The second vertical fin 521 and the second parallel fin 522 are isolated from each other by a second partition plate 5211, and the second sealing cover 72 covers the side of the second vertical fin 521 away from the heat exchange fin 2. The two sides of the second vertical fin 521 are connected to the second heat dissipation cavity 831 through a second branch opening 282 and a fourth branch opening 284, enabling hot airflow to be introduced into the second branch heat exchange fin assembly 52 and exchange heat with the cold airflow in the second branch heat exchange fin assembly 52. ​​The second parallel fin 522 is connected to the cold airflow cavity 14, enabling hot airflow from the hot airflow cavity 13 to be introduced into the second branch heat exchange fin assembly 52.

[0157] The branch cold end fan 33 is used to introduce the cold air from the external environment into the first branch heat exchange fin assembly 51, and the branch hot end fan 34 is used to introduce the hot air in the second heat dissipation cavity 831 into the second branch heat exchange fin assembly 52. ​​This can effectively improve the circulation of hot and cold air, thereby increasing the heat dissipation rate.

[0158] Therefore, the heat exchange fins 2, the first branch heat exchange fin assembly 51, and the second branch heat exchange fin assembly 52 can achieve both independent heat exchange without airflow interference and mutual coordination and synergy in heat exchange, which helps to improve the overall heat exchange efficiency. The heat exchanger 100 provided in this embodiment maximizes the use of the limited heat exchange area, ensuring that the airflow always flows in close contact with the surface of the heat exchange fins 2. The area through which the airflow passes is an effective heat exchange area, effectively reducing the formation of heat exchange dead zones, thereby enhancing the heat exchange capacity and further improving the heat dissipation efficiency.

[0159] In this embodiment, the first branch opening 281, the second branch opening 282, the third branch opening 283 and the fourth branch opening 284 can adopt a rectangular structure. In actual use, other shapes can also be selected, as long as the first vertical fin 511 and the second vertical fin 521 can be exposed to the heat exchanger 100.

[0160] See Figure 21d , Figure 21d This is a structural diagram showing the configuration of branch hot-end fans and branch cold-end fans when they are piezoelectric fans. Branch cold-end fan 33 and branch hot-end fan 34 can be piezoelectric fans, with the inlet surface of the piezoelectric fan matching the rectangular opening to ensure sufficient airflow and good flow uniformity. Other fans, such as centrifugal fans, can also be selected according to actual needs.

[0161] In the control cabinet equipment provided by this utility model, such as Figure 22 and Figure 23As shown, the heat exchanger 100 has a first air guide bridge 61 and a second air guide bridge 62; the rear shell 810 of the chassis 800 is also provided with a branch air inlet 813 and a branch air outlet 814; the second end of the first air guide bridge 61 and the second end of the second air guide bridge 62 are respectively provided with the branch air inlet 813 and the branch air outlet 814 to communicate with the cold air flow.

[0162] In this embodiment, the second end of the first air guide bridge 61 and the second end of the second air guide bridge 62 are connected to the external environment through the branch air inlet 813 and the branch air outlet 814, respectively, which can introduce or export the cold airflow in the external environment into the first branch heat exchange fin assembly 51.

[0163] In the heat exchanger 100 provided in the sixth embodiment of this utility model, such as Figures 25a to 26 As shown, Figure 25a for Figure 23 The provided heat exchanger cross-sectional view is as follows: Figure 23 A cross-sectional view shown in the GG direction. Figure 25b for Figure 25a A magnified view of a section of M5. Figure 25c for Figure 25a A magnified view of a section of M6. Figure 26 for Figure 23 The provided heat exchanger cross-sectional view is as follows: Figure 23 Cross-sectional view shown in the HH direction. The flow process of hot and cold air in hot air passage 131 and cold air passage 141 is the same as in the fifth embodiment, and will not be described in detail here.

[0164] During the downward flow of the hot airflow in the hot airflow cavity 13, a portion of the hot airflow enters the first branch heat exchange fin assembly 51 and exchanges heat with the cold airflow within it. A "cross-vertical" airflow relationship is formed between the hot and cold airflows within the first branch heat exchange fin assembly 51. Under the action of the branch cold-end fan 33, more cooling capacity is provided to the heat exchanger 100 per unit time, which helps to enhance the heat exchange and lower the temperature of the hot airflow within the chassis 800.

[0165] Similarly, as the cold airflow in the cold airflow cavity 14 flows upward, some of it enters the second branch heat exchange fin assembly 52 and exchanges heat with the hot airflow within it. A "cross-vertical" airflow relationship is formed between the hot and cold airflows within the second branch heat exchange fin assembly 52. ​​Under the action of the branch hot-end fan 34, more hot airflow enters the heat exchanger 100 per unit time, helping to enhance heat exchange and lower the temperature of the hot airflow in the chassis 800.

[0166] Through the above flow process, the "gradually contracting and expanding" air duct form and "counter-flow" air duct relationship in the hot air duct 13 and cold air duct 14, together with the "cross-vertical" air duct relationship in the first branch heat exchange fin assembly 51 and the second branch heat exchange fin assembly 52, enable the two to achieve independent heat exchange without interference between airflows, and to achieve mutual cooperation and synergy in heat exchange, which helps to improve the overall heat exchange efficiency.

[0167] See Figure 27a , Figure 27a for Figure 26 Cross-sectional view in direction II. The hot and cold airflows inside the first branch heat exchange fin assembly 51 and the second branch heat exchange fin assembly 52 are isolated from each other to ensure a high IP protection level for the circuit board housing cavity.

[0168] Meanwhile, under the action of the branch hot end fan 34, the hot airflow between the second branch heat exchange fin assembly 52 and the second heat dissipation cavity 831 is realized; and under the action of the branch cold end fan 33, the first air guide bridge 61 and the second air guide bridge 62, the flow between the first branch heat exchange fin assembly 51 and the external environment is realized.

[0169] See Figure 27b , Figure 27b for Figure 27a A cross-sectional view along the JJ direction. When piezoelectric fans are selected for the branch hot-end fan 34 and the branch cold-end fan 33, a more uniform airflow can be achieved within the different hot airflow channels 131 and cold airflow channels 141, which helps to improve heat exchange efficiency. Preferably, the branch hot-end fan 34 can be embedded in the second branch heat exchange fin assembly 52 to achieve blade concealment, or it can be mounted on the outside of the second branch heat exchange fin assembly 52.

[0170] In the seventh embodiment of this utility model, as Figures 28a to 28c As shown, Figure 28a This is a schematic diagram of the structure of the heat exchanger provided in the seventh embodiment of the present invention when the heat exchanger shell, the first air guide bridge, and the second air guide bridge are not installed. Figure 28b for Figure 28a A schematic diagram of the structure of the first branch heat exchange fin assembly. Figure 28c for Figure 28a A schematic diagram of the structure of the second branch heat exchange fin assembly. The parallel heat dissipation plates 5120 / 5220 include: multiple short heat dissipation plates 5121 / 5221 and multiple long heat dissipation plates 5122 / 5222, wherein the multiple long heat dissipation plates 5122 / 5222 are spaced apart between the multiple short heat dissipation plates 5121 / 5221; the long heat dissipation plates 5122 / 5222 can extend into the hot airflow channel 131 or the cold airflow channel 141.

[0171] In this embodiment, the first parallel heat sink 5120 includes a plurality of first short heat sinks 5121 and a plurality of first long heat sinks 5122; the second parallel heat sink 5220 includes a plurality of second short heat sinks 5221 and a plurality of second long heat sinks 5222. The first short heat sinks 5121 and the second short heat sinks 5221 extend at most to the protruding end of the heat exchange fins 2, while the first long heat sinks 5122 and the second long heat sinks 5222 extend deep into the hot airflow channel 131 and the cold airflow channel 141, increasing the heat exchange area with the airflow.

[0172] See Figures 29a to 29b , Figure 29a The heat exchanger provided in the seventh embodiment of this utility model is equipped with a first air guide bridge and a second air guide bridge, and the cross-sectional direction is as follows: Figure 26 A cross-sectional view shown in the middle II direction. Figure 29b for Figure 29a A partial enlarged view of M7. Multiple first short heat sinks 5121 and multiple first long heat sinks 5122, and multiple second short heat sinks 5221 and multiple second long heat sinks 5222 are all alternately distributed in a certain proportion, which can increase the interaction between the first branch heat exchange fin assembly 51 and the hot airflow cavity 13, and the interaction depth between the second branch heat exchange fin assembly 52 and the cold airflow cavity 14, helping to make the heat exchange between hot and cold airflows more complete.

[0173] In the eighth embodiment of this utility model, as Figures 30a to 31 As shown, Figure 30a This is a schematic diagram of the structure of the heat exchanger provided in the eighth embodiment of the present invention when the heat exchanger shell, the first air guide bridge, and the second air guide bridge are not installed. Figure 30b for Figure 30a A schematic diagram of the structure of the first branch heat exchange fin assembly or the second branch heat exchange fin assembly. Figure 30c for Figure 30b A magnified view of a portion of the image. Figure 31A schematic diagram of the structure of the heat exchanger provided in the eighth embodiment of this utility model when the heat exchanger shell, the first air guide bridge and the second air guide bridge are installed. The first branch heat exchange fin assembly 51 and the second branch heat exchange fin assembly 52 both include: multiple vertical fins 511 / 521 bent into a single line and arranged in a zigzag shape, extending perpendicularly to the extension direction of the heat exchange fin 2; and multiple parallel fins 512 / 522 bent into a single line and arranged in a zigzag shape, extending parallel to the extension direction of the heat exchange fin 2; the multiple vertical fins 511 / 521 and the multiple parallel fins 512 / 522 are arranged in multiple alternating groups; adjacent vertical fins 511 / 521 and parallel fins 512 / 522 are isolated from each other by intermediate plates 5112 / 5212; the first branch heat exchange fin assembly 51 and the second branch heat exchange fin assembly 52 are both provided with sealing covers 71 / 72 on the side closer to the heat exchange fin 2 and the side farther away from the heat exchange fin 2.

[0174] In this embodiment, the first vertical fin 511, the first parallel fin 512, the second vertical fin 521, and the second parallel fin 522 are all bent into multiple Z-shaped configurations arranged in a straight line. Adjacent first parallel fins 512 and second vertical fins 521, as well as adjacent second vertical fins 521 and second parallel fins 522, are isolated from each other by a first intermediate plate 5112 and a second intermediate plate 5212, respectively. The heat from the hot airflow can be directly conducted to the cold airflow side through the first intermediate plate 5112 and the second intermediate plate 5212, or it can be transferred first to the Z-shaped fins through the first intermediate plate 5112 and the second intermediate plate 5212, and then to the cold airflow side. The Z-shaped fins expand the heat exchange area between the fluid and the wall, thus improving the heat exchange capacity.

[0175] Meanwhile, a first sealing cover 71 is provided on both the side of the first branch heat exchange fin assembly 51 closest to the heat exchange fin 2 and the side furthest from the heat exchange fin 2, and a second sealing cover 72 is provided on both the side of the second branch heat exchange fin assembly 52 closest to the heat exchange fin 2 and the side furthest from the heat exchange fin 2. The first intermediate plate 5112 and the second intermediate plate 5212 have the same structure as the first sealing cover 71 and the second sealing cover 72, and their function is to isolate hot and cold airflows and conduct heat.

[0176] like Figures 32a to 33c As shown, Figure 32a for Figure 30a The provided heat exchanger cross-sectional view is as follows: Figure 23 A cross-sectional view shown in the GG direction. Figure 32b for Figure 32a A magnified view of a section of M8. Figure 32c for Figure 32a A magnified view of a section of M9. Figure 33a for Figure 32a Cross-sectional view along the KK direction. Figure 33b for Figure 33a A magnified view of a section of M10. Figure 33c for Figure 33a A partial enlarged view of M11. In this embodiment, the flow processes of hot and cold air in the hot airflow channel 131, the cold airflow channel 141, the first branch heat exchange fin assembly 51, and the second branch heat exchange fin assembly 52 are the same as in the fifth embodiment, and will not be described in detail here. Since the first branch heat exchange fin assembly 51 has multiple first vertical fins 511 and multiple first parallel fins 512, and the second branch heat exchange fin assembly 52 has multiple second vertical fins 521 and multiple second parallel fins 522, the circulation of hot and cold air is further accelerated, effectively increasing the heat dissipation efficiency.

[0177] 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 in that, include: Heat exchanger housing (1) and heat exchange fins (2); The heat exchanger housing (1) is provided with a hot end air inlet (111), a hot end air outlet (112), a cold end air inlet (121), and a cold end air outlet (122); wherein, the hot end air inlet (111) and the cold end air inlet (121) are respectively located on the opposite hot end air inlet side (11) and cold end air inlet side (12) of the heat exchanger housing (1); the hot end air outlet (112) and the cold end air outlet (122) are isolated from each other and are spaced apart from the hot end air inlet (111) and the cold end air inlet (121), respectively. The heat exchange fins (2) are disposed inside the heat exchanger shell (1) along the height direction of the heat exchanger shell (1) and located between the hot end air inlet (111) and the cold end air inlet (121), dividing the first cavity (10) inside the heat exchanger shell (1) into a hot air flow cavity (13) and a cold air flow cavity (14) that are isolated from each other. The hot end air inlet (111) and hot end air outlet (112) are connected to the hot air flow chamber (13); the cold end air inlet (121) and cold end air outlet (122) are connected to the cold air flow chamber (14); The heat exchange fins (2) are used to exchange heat between the hot airflow entering the hot airflow chamber (13) and the cold airflow entering the cold airflow chamber (14); after heat exchange, the hot airflow is discharged from the heat exchanger through the hot end outlet (112), and after heat exchange, the cold airflow is discharged from the heat exchanger through the cold end outlet (122).

2. The heat exchanger according to claim 1, characterized in that, The heat exchange fins (2) are bent into multiple zigzag shapes arranged in a straight line; wherein, the space between multiple protrusions with openings facing the hot airflow cavity (13) forms a hot airflow channel (131); the space between multiple protrusions with openings facing the cold airflow cavity (14) forms a cold airflow channel (141).

3. The heat exchanger according to claim 1, characterized in that, The heat exchange fins (2) abut against the inner wall of the heat exchanger shell (1) except for the hot end air inlet side (11) and the cold end air inlet side (12) on both sides along the height direction and both sides along the width direction, respectively. The hot air flow cavity (13) is formed by the side of the heat exchange fins (2) facing the hot end air inlet side (11), the hot end air inlet side (11), and part of the sidewall of the heat exchanger shell (1); The cold air flow cavity (14) is formed by the side of the heat exchange fins (2) facing the cold end air inlet side (12), the cold end air inlet side (12), and part of the sidewall of the heat exchanger shell (1).

4. The heat exchanger according to claim 2, characterized in that, The hot end air inlet (111) and the cold end air inlet (121) are respectively equipped with a hot end fan (31) and a cold end fan (32). The hot-end fan (31) is used to introduce hot airflow into the hot airflow cavity (13) from the hot-end air inlet (111); the cold-end fan (32) is used to introduce cold airflow into the cold airflow cavity (14) from the cold-end air inlet (121).

5. The heat exchanger according to claim 4, characterized in that, Also includes: First guide plate (41) and second guide plate (42); The first guide plate (41) is located inside the hot air flow cavity (13) and is disposed between the heat exchange fins (2) and the hot end air inlet side (11) to guide the hot air flow after heat exchange to the hot end air outlet (112). The second guide plate (42) is located inside the cold airflow cavity (14) and is disposed between the heat exchange fins (2) and the cold end air inlet side (12) to guide the cold airflow after heat exchange to the cold end air outlet (122).

6. The heat exchanger according to claim 5, characterized in that, The first guide plate (41) is provided with a first guide portion (411) and a second guide portion (412) at its first and second ends along the height direction, respectively; the second guide plate (42) is provided with a third guide portion (421) and a fourth guide portion (422) at its first and second ends along the height direction, respectively. The first guide section (411) of the first guide plate (41) is located below the hot end fan (31); the second guide section (412) of the first guide plate (41) is located above the hot end air outlet (112); The third guide section (421) of the second guide plate (42) is located below the cold end fan (32); the fourth guide section (422) of the second guide plate (42) is located above the cold end air outlet (122).

7. The heat exchanger according to any one of claims 4 to 6, characterized in that, The hot end air inlet (111) is located on the upper part of the hot end air inlet side (11); the hot end air outlet (112) is located on the lower part of the hot end air inlet side (11) away from the hot end air inlet (111). The cold end air inlet (121) is located on the upper part of the cold end air inlet side (12), symmetrical to the hot end air inlet (111); the cold end air outlet (122) is located on the lower part of the cold end air inlet side (12), away from the cold end air inlet (121), symmetrical to the hot end air outlet (112).

8. The heat exchanger according to any one of claims 4 to 6, characterized in that, The hot end air inlet (111) is located on the upper part of the hot end air inlet side (11); the hot end air outlet (112) is located on the bottom of the heat exchanger shell (1); The cold end air inlet (121) is located on the upper part of the cold end air inlet side (12), opposite to the hot end air inlet (111); the cold end air outlet (122) is located at the bottom of the heat exchanger housing (1).

9. The heat exchanger according to claim 8, characterized in that, The heat exchanger housing (1) has an opening at the bottom, and a first end cap (15) and a flow guide structure (151) extending from the bottom are provided at the bottom of the heat exchanger housing (1). The first end cap (15) covers the bottom of the heat exchange fins (2); the opening between the side of the first end cap (15) near the hot end air inlet side (11) and the hot end air inlet side (11) forms the hot end air outlet (112). The flow guiding structure (151) extends out from the bottom of the heat exchanger housing (1); Extending toward the cold end air inlet side (12); the airflow guiding structure (151) has two triangular side plates and an inclined plate; The flow guiding structure (151) is obliquely shaped. One side of the oblique plate is connected to the first end cover (15), and the other side is connected to the cold end air inlet side (12). One side of the triangular side plate is connected to the oblique plate, and the other two sides of the triangular side plate are respectively connected to the bottom of the heat exchanger shell (1) and the cold end air inlet side (12). The first end cap (15) has an opening between the side of the cold end air inlet side (12) and the cold end air inlet side (12); one end of the flow guiding structure (151) is connected to the opening, and the other end is connected to the rear shell air outlet (812) on the rear shell (810) of the chassis (800), forming the cold end air outlet (122).

10. The heat exchanger according to claim 9, characterized in that, The first end cap (15) has a first airflow hole (152); the area on the first end cap (15) other than the first airflow hole (152) is formed as a first airflow baffle (153); the first airflow hole (152) is connected to the hot airflow chamber (13); the first airflow baffle (153) is used to close the cold airflow chamber (14).

11. The heat exchanger according to claim 4, characterized in that, The heat exchange fins (2) include: a first narrow fin (21) and a first wide fin (22) arranged sequentially along the height direction. The first wide fin (22) is fixed to the bottom plate of the heat exchanger housing (1); The side of the first narrow fin (21) near the hot end air inlet side (11) and the side of the first wide fin (22) near the hot end air inlet side (11) form a first stepped structure (231). The hot-end fan (31) is disposed within the first accommodating area (211) formed by the first stepped structure (231) and the heat exchanger housing (1); The side of the first narrow fin (21) near the cold end air inlet side (12) and the side of the first wide fin (22) near the cold end air inlet side (12) form a second stepped structure (232). The cold end fan (32) is disposed within the second accommodating area (212) formed by the second stepped structure (232) and the heat exchanger housing (1).

12. The heat exchanger according to claim 11, characterized in that, Each of the hot air flow channels (131) of the first narrow fin (21) is connected to a portion of the hot air flow channels (131) of the first wide fin (22); Each cold airflow channel (141) of the first narrow fin (21) is connected to a portion of the cold airflow channel (141) of the first wide fin (22); On the first stepped structure (231), a first sealing structure (221) is provided on the top of the other cold air flow channels (141) in the first wide fin (22) that are not connected to the cold air flow channels (141) of the first narrow fin (21). On the second stepped structure (232), a second sealing structure (222) is provided on the top of the other hot air flow channels (131) in the first wide fin (22) that are not connected to the hot air flow channels (131) of the first narrow fin (21).

13. The heat exchanger according to claim 4, characterized in that, The hot end air inlet (111) is located on the upper part of the hot end air inlet side (11); the hot end air outlet (112) is located on the lower part of the hot end air inlet side (11) away from the hot end air inlet (111). The cold end air inlet (121) is located at the lower part of the cold end air inlet side (12), symmetrical to the hot end air outlet (112); the cold end air outlet (122) is located at the upper part of the cold end air inlet side (12), away from the cold end air inlet (121), symmetrical to the hot end air inlet (111).

14. The heat exchanger according to claim 13, characterized in that, The heat exchange fins (2) include: a second narrow fin (241), a second wide fin (25) and a third narrow fin (242) arranged sequentially along the height direction. The third narrow fin (242) is fixed to the bottom plate of the heat exchanger housing (1); The side of the second narrow fin (241) near the hot end air inlet side (11) and the side of the second wide fin (25) near the hot end air inlet side (11) form a third stepped structure (233); the side of the second narrow fin (241) near the cold end air inlet side (12) and the side of the second wide fin (25) near the cold end air inlet side (12) are flush. The hot-end fan (31) is disposed within the third accommodating area (213) formed by the third stepped structure (233) and the heat exchanger housing (1); The third narrow fin (242) is arranged in a fourth stepped structure (234) with the side of the second wide fin (25) near the cold end air inlet (12); the side of the third narrow fin (242) near the hot end air inlet (11) is flush with the side of the second wide fin (25) near the hot end air inlet (11); The cold end fan (32) is disposed within the fourth accommodating area (214) formed by the fourth stepped structure (234) and the heat exchanger housing (1).

15. The heat exchanger according to claim 14, characterized in that, Each of the hot air flow channels (131) of the second narrow fin (241) is connected to a portion of the hot air flow channels (131) of the second wide fin (25); Each of the cold air flow channels (141) of the second narrow fin (241) is connected to a portion of the cold air flow channels (141) of the second wide fin (25); The hot air flow channels (131) of the third narrow fin (242) are connected to a portion of the hot air flow channels (131) of the second wide fin (25); The cold air flow channels (141) of the third narrow fin (242) are connected to a portion of the cold air flow channels (141) of the second wide fin (25); On the third step structure (233), a third sealing structure (223) is provided on the top of the other cold air flow channels (141) in the second wide fin (25) that are not connected to the respective cold air flow channels (141) of the second narrow fin (241). On the fourth step structure (234), at the bottom of the other hot air flow channels (131) in the second wide fin (25) that are not connected to the respective hot air flow channels (131) of the third narrow fin (242), a fourth sealing structure (224) is provided.

16. The heat exchanger according to claim 13, characterized in that, The heat exchange fins (2) include: a third wide fin (271), a fourth narrow fin (26) and a fourth wide fin (272) arranged sequentially along the height direction; The third wide fin (271) is fixed to the bottom plate of the heat exchanger housing (1); The fourth narrow fin (26) near the hot end air inlet side (11) and the third wide fin (271) near the hot end air inlet side (11) form a fifth stepped structure (235); the fourth narrow fin (26) near the cold end air inlet side (12) and the third wide fin (271) near the cold end air inlet side (12) are flush. The hot-end fan (31) is disposed within the fifth accommodating area (215) formed by the fifth stepped structure (235) and the heat exchanger housing (1); The fourth narrow fin (26) near the cold end air inlet side (12) and the fourth wide fin (272) near the cold end air inlet side (12) form a sixth step structure (236); the fourth narrow fin (26) near the hot end air inlet side (11) and the fourth wide fin (272) near the hot end air inlet side (11) are flush. The cold end fan (32) is disposed within the sixth accommodating area (216) formed by the sixth step structure (236) and the heat exchanger housing (1).

17. The heat exchanger according to claim 16, characterized in that, Each of the hot air flow channels (131) of the fourth narrow fin (26) is connected to a portion of the hot air flow channels (131) of the third wide fin (271) and the fourth wide fin (272); The cold air flow channels (141) of the fourth narrow fin (26) are respectively connected to some cold air flow channels (141) of the third wide fin (271) and the fourth wide fin (272); On the fifth step structure (235), a fifth sealing structure (225) is provided on the top of the other cold air flow channels (141) in the third wide fin (271) that are not connected to the cold air flow channels (141) of the fourth narrow fin (26). On the sixth step structure (236), at the bottom of the other hot air flow channels (131) of the fourth wide fin (272) that are not connected to the respective hot air flow channels (131) of the fourth narrow fin (26), a sixth sealing structure (226) is provided.

18. The heat exchanger according to claim 17, characterized in that, Also includes: First branch heat exchange fin assembly (51), second branch heat exchange fin assembly (52), first air guide bridge (61) and second air guide bridge (62); The heat exchanger housing (1) has a first branch opening (281) and a second branch opening (282) on its left side wall perpendicular to the hot end air inlet side (11) and the cold end air inlet side (12); the heat exchanger housing (1) has a third branch opening (283) and a fourth branch opening (284) on its right side wall perpendicular to the hot end air inlet side (11) and the cold end air inlet side (12). The first branch heat exchange fin assembly (51) is disposed in the fifth accommodating area (215); the two sides of the first branch heat exchange fin assembly (51) are exposed through the first branch opening (281) and the third branch opening (283) respectively, for introducing cold airflow to exchange heat with the hot airflow in the hot airflow cavity (13); The second branch heat exchange fin assembly (52) is disposed in the sixth receiving area (216); the two sides of the second branch heat exchange fin assembly (52) are exposed through the second branch opening (282) and the fourth branch opening (284) respectively, for introducing hot airflow to exchange heat with the cold airflow in the cold airflow chamber (14); The first air guide bridge (61) has its first end connected to the first branch heat exchange fin assembly (51) through the first branch opening (281), and its second end connected to the outside cold airflow, for introducing the cold airflow into the first branch heat exchange fin assembly (51). The second air guide bridge (62) has its first end connected to the first branch heat exchange fin assembly (51) through the third branch opening (283), and its second end connected to the outside cold airflow, for the purpose of discharging the cold airflow out of the first branch heat exchange fin assembly (51).

19. The heat exchanger according to claim 18, characterized in that, The first branch heat exchange fin assembly (51) and the second branch heat exchange fin assembly (52) both include: vertical fins (511 / 521), parallel fins (512 / 522) and sealing covers (71 / 72); The vertical fins (511 / 521) include: a partition plate (5111 / 5211) and a plurality of vertical heat dissipation plates (5110 / 5210) that are perpendicular to the heat exchange fins (2) and extend from the first side of the partition plate (5111 / 5211) away from the heat exchange fins (2). The parallel fins (512 / 522) include: a plurality of parallel heat dissipation plates (5120 / 5220) that are parallel to the heat exchange fins (2) and extend from the second side of the partition plate (5111 / 5211) toward the heat exchange fins (2). The sealing cover (71 / 72) is provided on the side of the vertical fin (511 / 521) away from the heat exchange fin (2); The first air guide bridge (61) has its first end connected to the first vertical fin (511) of the first branch heat exchange fin assembly (51) through the first branch opening (281); The second air guide bridge (62) has its first end connected to the first vertical fin (511) of the first branch heat exchange fin assembly (51) through the third branch opening (283).

20. The heat exchanger according to claim 19, characterized in that, The first air guide bridge (61) or the second air guide bridge (62) is provided with a branch cold end fan (33). A branch hot end fan (34) is provided on the side of the second vertical fin (521) near the second branch opening (282) or the fourth branch opening (284).

21. The heat exchanger according to claim 20, characterized in that, The parallel heat sink (5120 / 5220) includes: a plurality of short heat sinks (5121 / 5221) and a plurality of long heat sinks (5122 / 5222), wherein the plurality of long heat sinks (5122 / 5222) are spaced apart between the plurality of short heat sinks (5121 / 5221); The long heat sink (5122 / 5222) can extend into the hot airflow channel (131) or the cold airflow channel (141).

22. The heat exchanger according to claim 18, characterized in that, Both the first branch heat exchange fin assembly (51) and the second branch heat exchange fin assembly (52) include: a plurality of vertical fins (511 / 521) bent into a single line and arranged in a zigzag shape, with the extension direction perpendicular to the extension direction of the heat exchange fin (2); and a plurality of parallel fins (512 / 522) bent into a single line and arranged in a zigzag shape, with the extension direction parallel to the extension direction of the heat exchange fin (2). The plurality of vertical fins (511 / 521) and the plurality of parallel fins (512 / 522) are arranged in multiple alternating groups; adjacent vertical fins (511 / 521) and parallel fins (512 / 522) are isolated from each other by an intermediate plate (5112 / 5212). The first branch heat exchange fin assembly (51) and the second branch heat exchange fin assembly (52) are each provided with a sealing cover (71 / 72) on the side close to the heat exchange fin (2) and on the side away from the heat exchange fin (2).

23. An electronic device, characterized in that, include: The heat exchanger (100) and the chassis (800) according to any one of claims 1-22; The heat exchanger (100) is disposed inside the chassis (800) and is used to dissipate heat from the high-heat-generating module (300) and the heat-sensitive module (400) inside the chassis. The heat exchanger (100) abuts against the rear shell (810) of the chassis (800); the cold end air inlet (121) of the heat exchanger (100) is connected to the rear shell air inlet (811) on the rear shell (810) to receive external cold airflow; the cold end air outlet (122) is connected to the rear shell air outlet (812) of the rear shell (810) to export the cold airflow after heat exchange to the outside of the chassis (800); The heat exchanger (100) has a hot end air inlet (111) and a hot end air outlet (112) facing the inside of the chassis (800) so as to receive the hot air flow generated by the high-heat module (300) through the hot end air inlet (111) and to export the hot air flow after heat exchange into the inside of the chassis (800) through the hot end air outlet (112).

24. The electronic device according to claim 23, characterized in that, The front shell (820) of the chassis (800) is provided with a front shell air inlet (821) and a front shell air outlet (822). It also includes: a heat dissipation assembly (200) that divides the interior of the chassis (800) into a first heat dissipation cavity (830) and a second heat dissipation cavity (831) that are isolated from each other; wherein, the first heat dissipation cavity (830) is formed by the side of the heat dissipation assembly (200) facing the front shell (820), the front shell (820) and a portion of the sidewall of the chassis (800); the second heat dissipation cavity (831) is formed by the side of the heat dissipation assembly (200) facing the rear shell (810), the rear shell (810) and another portion of the sidewall; The heat dissipation component (200) is located on the side of the front shell (820) of the chassis (800), and is disposed opposite to the front shell air inlet (821) and the front shell air outlet (822); the heat dissipation component (200) is located on one side of the second heat dissipation cavity (831) and is attached to the high heat generation module (300).

25. The electronic device according to claim 24, characterized in that, The number of air outlets (822) on the front shell is two; The heat dissipation assembly (200) includes a cooling fan (210) and heat dissipation fins (220). The heat dissipation fins (220) abut against the inner wall of the chassis (800) on both sides along the length direction and both sides along the width direction. The high-heat module (300) is attached to the heat dissipation fins (220) to reduce the temperature of the high-heat module (300); The front shell air inlet (821) is located in the middle of the front shell (820), and the two front shell air outlets (822) are arranged on both sides of the front shell air inlet (821); the cooling fan (210) is arranged corresponding to the front shell air inlet (821) and is used to draw in cold air from the front shell air inlet (821) and discharge it from the two front shell air outlets (822).

26. The electronic device according to claim 24, characterized in that, The hot end air inlet (111) is located on the upper part of the hot end air inlet side (11); the hot end air outlet (112) is located on the bottom of the heat exchanger shell (1); The cold end air inlet (121) is located on the upper part of the cold end air inlet side (12), opposite to the hot end air inlet (111); the cold end air outlet (122) is located at the bottom of the heat exchanger housing (1); The bottom of the heat exchanger housing (1) is provided with a flow guiding structure (151) extending from the bottom. The extended end of the air guiding structure (151) is flush with the lower edge of the rear shell air outlet (812), and the bottom edge of the cold end air inlet side (12) is flush with the upper edge of the rear shell air outlet (812).

27. The electronic device according to claim 26, characterized in that, The heat exchanger (100) has a first air guide bridge (61) and a second air guide bridge (62). The rear shell (810) of the chassis (800) is also provided with a branch air inlet (813) and a branch air outlet (814); the second end of the first air guide bridge (61) and the second end of the second air guide bridge (62) are respectively provided with the branch air inlet (813) and the branch air outlet (814) to communicate with the cold air flow.

28. The electronic device according to claim 24, characterized in that, The heat exchanger (100) has a top gap region and a bottom gap region between its top and bottom and the top and bottom of the chassis (800), respectively.

Images