Heat exchange module, air heat exchanger and electrical cabinet

Abstract

The invention discloses a heat exchange module, an air heat exchanger and an electrical cabinet, the heat exchange module comprises a heat exchange core body and an air collection cavity located on the first side of the heat exchange core body in the X-axis direction, the heat exchange core body is provided with an inner air passing channel and an outer circulation air channel which exchange heat with each other, and the inner air passing channel comprises a first air passing channel and a second air passing channel; the first air passing channel comprises a plurality of first air passing sub-channels, one ends of the first air passing sub-channels communicate with the air collecting cavity, the other ends of the first air passing sub-channels form air supply ends on the second side, in the X-axis direction, of the heat exchange core, and the air supply ends are arranged in the Z-axis direction. The second air passing channel comprises a plurality of second air passing sub-channels, one ends of the second air passing sub-channels communicate with the air collecting cavity, the other ends of the second air passing sub-channels form air return ends on the second side, in the X-axis direction, of the heat exchange core, and the air return ends are arranged in the Z-axis direction. At least part of the outer circulation air channel extends in the Z-axis direction and is provided with an air inlet end and an air outlet end. The air heat exchanger comprises the heat exchange module. The electrical cabinet comprises the air heat exchanger. The heat exchange efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation, and in particular to a heat exchange module, an air heat exchanger and an electrical cabinet. Background Art

[0002] A large number of electrical equipment are usually placed in electrical cabinets. These electrical equipment cannot work for a long time in a high temperature environment. In order to reduce the impact of external dust on internal electrical equipment, electrical cabinets often use closed structures. The heat exchanger can release the heat inside the electrical cabinet to the external environment through heat exchange. Therefore, electrical cabinets often use air heat exchangers to dissipate heat inside the electrical cabinet. The air heat exchanger includes a heat exchange core, which has an internal circulation duct connected to the inside of the electrical cabinet and an external circulation duct connected to the outside. The internal circulation duct and the external circulation duct are arranged alternately. The internal circulation duct generally has a top air inlet and a side outlet, while the external circulation duct has a bottom air inlet and a side outlet. The airflow flows in opposite directions in the internal circulation duct and the external circulation duct to achieve heat exchange, but the heat exchange efficiency of this air heat exchanger still cannot meet the heat exchange requirements of the electrical cabinet. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned defects or problems existing in the background technology and to provide a heat exchange module, an air heat exchanger and an electrical cabinet with high heat exchange efficiency.

[0004] To achieve the above objectives, the present invention and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:

[0005] Technical solution one and its related embodiments provide a heat exchange module, which includes a heat exchange core and an air collecting cavity located on the first side of the heat exchange core along the X-axis direction, the heat exchange core is provided with an inner air duct and an outer circulation air duct for heat exchange with each other, the inner air duct is connected with the air collecting cavity to form an inner circulation air duct, the inner air duct includes a first air duct and a second air duct arranged along the Z-axis direction; the first air duct includes a plurality of first sub-air ducts, one end of the first sub-air duct is connected to the air collecting cavity, and the other end forms an air supply end on the second side of the heat exchange core along the X-axis direction, and each air supply end is arranged along the Z-axis direction; the second air duct includes a plurality of second sub-air ducts, one end of the second sub-air duct is connected to the air collecting cavity, and the other end forms a return air end on the second side of the heat exchange core along the X-axis direction, and each return air end is arranged along the Z-axis direction; the outer circulation air duct extends at least partially along the Z-axis direction and is provided with an air inlet end and an air outlet end.

[0006] Based on technical solution one, technical solution two is also provided. In technical solution two and its related embodiments, each first sub-air duct is arranged along the Z-axis direction and extends along the X-axis direction; each second sub-air duct is arranged along the Z-axis direction and extends along the X-axis direction.

[0007] Based on Technical Solution 2, Technical Solution 3 is also provided. In Technical Solution 3 and its related embodiments, the number of the inner air ducts and the outer circulation air ducts is multiple, and each inner air duct and each outer circulation air duct are alternately arranged on the heat exchange core along the Y-axis direction.

[0008] Based on technical solution three, technical solution four is also provided. In technical solution four and its related embodiments, the outer circulation air duct penetrates the heat exchange core along the Z-axis direction, and a plurality of sub-outer air ducts parallel to each other and extending along the Z-axis direction are provided in the outer circulation air duct.

[0009] Based on Technical Solution 4, there is also provided Technical Solution 5. In Technical Solution 5 and its related embodiments, the length ratio of the heat exchange core and the air collecting cavity along the X-axis direction is greater than 3.

[0010] Based on technical solutions one to five, there is also a technical solution six. In technical solution six and its related embodiments, the heat exchange module is provided with a detachable dust collecting plate at the bottom of the air collecting cavity along the Z-axis direction.

[0011] Technical solution seven and its related embodiments provide an air heat exchanger for installation in an electrical cabinet, the electrical cabinet comprising a cabinet body, the cabinet body being provided with a first side wall perpendicular to the X-axis direction, comprising a heat exchange module, which is as described in any one of technical solutions one to six and is embedded in the first side wall, each air supply end forms an air supply port, each return air end forms a return air port, each air inlet end forms an air inlet, and each air outlet end forms an air outlet; the air supply port and the return air port are both connected to the inside of the cabinet body, and the air inlet and the air outlet are both connected to the outside of the cabinet body; a first heat dissipation fan, which is fixed relative to the heat exchange module and is used to drive wind from the return air port to the supply port; and a second heat dissipation fan, which is fixed relative to the heat exchange module and is used to drive wind from the air inlet to the air outlet.

[0012] Based on Technical Solution Seven, Technical Solution Eight is also provided. In Technical Solution Eight and its related embodiments, the heat exchange module also includes a shell, which is used to accommodate the heat exchange core and cooperate with it to form the air collecting chamber. The shell is embedded in the first side wall and is used to accommodate the heat exchange module, and the part located inside the cabinet is provided with a first air outlet connected to the air supply port and a second air outlet connected to the return air port, and the part located outside the cabinet is provided with a third air outlet connected to the air inlet and a fourth air outlet connected to the air outlet; the shell and the heat exchange core form a first interval and a second interval at the bottom and top ends along the Z-axis direction, respectively, and the third air outlet and the fourth air outlet are connected to the first interval and the second interval, respectively; the second heat dissipation fan is placed in the second interval, and the first heat dissipation fan is fixedly connected to the first air outlet of the shell.

[0013] Based on Technical Solution Eight, Technical Solution Nine is also provided. In Technical Solution Nine and its related embodiments, the third air outlet is located at the bottom and side of the first interval, and the fourth air outlet is located at the side of the second interval.

[0014] Technical solution ten and its related embodiments provide an electrical cabinet, which includes a cabinet body and an air heat exchanger as described in any one of technical solutions seven to nine; the cabinet body is provided with a first side wall perpendicular to the X-axis direction, and the heat exchange module is embedded in the first side wall.

[0015] From the above description of the present invention and its preferred embodiments, it can be seen that, compared with the prior art, the technical solution of the present invention and its preferred embodiments have the following beneficial effects due to the adoption of the following technical means:

[0016] The applicant has learned through continuous observation, experimentation and research that the reason for the technical problem of "poor heat exchange efficiency of the heat exchanger" in the existing technical solutions is that the heat exchange time of the internal circulation air duct is short and the heat exchange is insufficient.

[0017] In the technical scheme 1 and its preferred embodiment, the arrangement of the first air duct, the air collecting chamber and the second air duct makes the overall path of the inner circulation air duct close to a U-shape, the path of the inner circulation airflow is long, and compared with the scheme where no air collecting chamber is arranged and the inner circulation air duct includes a plurality of U-shaped pipes, the wind resistance is smaller. Since the outer circulation air duct at least partially extends along the Z-axis direction, the inner circulation airflow can fully exchange heat with the outer circulation airflow in the outer circulation air duct, thereby improving the heat exchange efficiency of the heat exchange module; wherein the first air duct includes a plurality of first sub-air ducts, the second air duct includes a plurality of first sub-air ducts, and the second sub-air duct includes a plurality of first sub-air ducts. The duct includes several second sub-air ducts. Compared with the solution that only one first sub-air duct is set in the first air duct and only one second sub-air duct is set in the second air duct, the heat exchange area of ​​the first air duct is larger, and the heat exchange area of ​​the second air duct is larger, thereby further increasing the heat exchange efficiency of the inner circulation air duct and the outer circulation air duct; the setting of the air collecting cavity also makes it difficult for dust in the inner circulation air duct to accumulate in the first sub-air duct and the second sub-air duct, but it is easier to collect in the air collecting cavity, thereby further improving the heat exchange efficiency of the inner circulation air duct and the outer circulation air duct. Therefore, the structural setting of the heat exchange module in the technical solution can well improve the heat exchange efficiency of the heat exchange module and even the air heat exchanger including the heat exchange module.

[0018] Since the wind flows entering each second sub-air duct through the return air end are located at different heights along the Z-axis direction, the wind flow temperatures of each second sub-air duct are not consistent. If the wind flow of the second sub-air duct flows directly to the first sub-air duct, that is, no air collecting cavity is set, and the second sub-air duct is connected to the first sub-air duct through a separate sub-air duct, then the temperature of the internal circulation wind flow at the air supply end corresponding to each first sub-air duct is also inconsistent, and the temperature uniformity is poor. When the heat exchanger is used in an electrical cabinet, it will undoubtedly affect the heat dissipation of the electrical equipment in the electrical cabinet, and the setting of the air collecting cavity makes each The airflow in the second sub-air duct can be fully mixed therein before flowing into the first sub-air duct, avoiding large temperature differences at each air supply end and greatly improving the temperature uniformity of the internal circulation airflow; that is, the air collecting chamber in the present technical solution can cooperate with the first air duct and the second air duct to make the internal circulation air duct as a whole close to a U-shape, and compared with the solution in which the internal circulation air duct includes multiple U-shaped pipes, the wind resistance is smaller, thereby increasing the heat exchange efficiency of the heat exchanger, and the internal circulation airflow at each second sub-air end can be fully mixed to improve the temperature uniformity of the air supply end of the internal circulation air duct.

[0019] In technical solution two and its preferred embodiment, each first sub-air duct and each second sub-air duct extend in the X-axis direction, so that the dust in the inner circulation air duct is not easy to accumulate in the first sub-air duct and the second sub-air duct, but is more easily gathered in the air collecting chamber, thereby further improving the heat exchange efficiency of the inner circulation air duct and the outer circulation air duct. In addition, the above arrangement also allows the first sub-air duct and the second sub-air duct to form a straight air duct, which is easier to produce and process, and has less wind resistance than other non-straight structural designs.

[0020] In technical solution three and its preferred embodiment, there are multiple inner air ducts and outer circulation air ducts, and the inner air ducts and the outer circulation air ducts are alternately arranged along the Y-axis direction. The outer circulation air duct and the inner air duct fully exchange heat with each other, and the heat exchange efficiency is high. The heat exchange has little impact on the air collecting cavity, thereby ensuring the temperature uniformity of the air supply end of the inner circulation air duct.

[0021] In technical solution four and its preferred embodiment, a plurality of sub-external air ducts parallel to each other and extending along the Z-axis direction are provided in the external circulation air duct. Compared with the solution in which only one sub-external air duct is formed in the external circulation air duct, the heat exchange area of ​​the external circulation air duct is larger, thereby further increasing the heat exchange efficiency of the internal circulation air duct and the external circulation air duct.

[0022] In technical solution five and its preferred embodiment, the length ratio of the heat exchange core and the air collecting cavity along the X-axis direction is greater than 3, which not only realizes the full mixing of the airflows of each second air duct in the air collecting cavity, but also ensures sufficient heat exchange between the inner air duct and the outer circulation air duct.

[0023] In technical solution six and its preferred embodiment, the heat exchange module is provided with a removable dust collecting plate at the bottom of the air collecting chamber along the Z-axis direction. Dust falls to the bottom of the air collecting chamber under the action of gravity. In actual application, when the dust in the internal circulation air duct gathers in the air collecting chamber, the air collecting chamber can be regularly dusted as needed, thereby avoiding dust clogging and affecting the heat exchange efficiency of the heat exchange module.

[0024] Technical solution seven and its preferred embodiments have the technical advantages of any one of technical solutions one to six.

[0025] In technical solution eight and its preferred embodiments, the setting of the first interval and the second interval improves the protectiveness of the external circulation air duct and is conducive to the placement of the second heat dissipation fan. The setting of the first interval also ensures that the air inlet end of each external circulation air duct can take in air. The second heat dissipation fan is placed in the second interval, and the first heat dissipation fan is fixed to the second air outlet of the shell, which is more conducive to the outlet of the internal circulation air duct and the external circulation air duct. In this way, the third air outlet and the fourth air outlet are respectively located at the bottom and top of the shell, so that the air outlet of the fourth air outlet is discharged upward, and it is not easy to enter the third air outlet and cause a heat island effect.

[0026] In technical solution nine and its preferred embodiments, the third air outlet is located at the bottom and side of the shell along the Z-axis direction, which is conducive to increasing the air intake volume. The fourth air outlet is located on the outside of the shell, which is conducive to the part of the shell located outside the cabinet forming a bottom air inlet and side air outlet structure, thereby improving the protectiveness of the external circulation air duct and making the external circulation air duct less likely to accumulate dust.

[0027] Technical solution ten has the technical advantages of any one of technical solutions seven to nine. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic diagram of an electrical cabinet according to an embodiment of the present application;

[0030] Figure 2 This is a partial schematic diagram of a heat exchange module according to an embodiment of the present application;

[0031] Figure 3 for Figure 1 Left view of

[0032] Figure 4 for Figure 3 Section view in AA direction;

[0033] Figure 5 for Figure 3 Cross-sectional view in the BB direction.

[0034] Description of main reference numerals:

[0035] Cabinet 100; first side wall 101; air heat exchanger 200; heat exchange module 10; internal circulation air duct 11; air collecting chamber 110; dust collecting plate 1101; first air duct 111; first sub-air duct 1111; second air duct 112; second sub-air duct 1121; air supply end 113; air return end 114; external circulation air duct 12; sub-external air duct 121; air inlet end 122; air outlet end 123; inlet Air inlet 03; air outlet 04; air supply inlet 01; air return inlet 02; external circulation air duct 12; sub-external air duct 121; air inlet end 122; air outlet end 123; heat exchange core 120; air inlet 03; air outlet 04; shell 20; first air inlet 21; second air inlet 22; third air inlet 23; fourth air inlet 24; first interval 25; second interval 26; first heat dissipation fan 30; second heat dissipation fan 40. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the claims, description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. are for distinguishing different objects rather than for describing a specific order.

[0038] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present invention.

[0039] In the claims, specification and the above drawings of the present invention, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0040] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0041] In the claims and the specification except for the embodiments, the terms "X-axis direction", "Y-axis direction" and "Z-axis direction" only mean that the feature with one of the above directions is perpendicular to the feature with another direction, and do not require that they must be implemented according to the "X-axis direction", "Y-axis direction" and "Z-axis direction" described in the embodiments. In the embodiments, the X-axis direction is perpendicular to the Y-axis direction and the Z-axis direction. Among them, the X-axis direction can be divided into left and right, the Y-axis direction can be divided into front and back, and the Z-axis direction can be divided into top and bottom.

[0042] See also Figure 1 , Figure 1 An electrical cabinet is shown, including a cabinet 100 and an air heat exchanger 200. In practical applications, the electrical cabinet also includes electrical equipment placed in the cabinet 100. A closed structure is formed inside the cabinet 100 to improve the protection of the electrical equipment. The air heat exchanger 200 is installed on the cabinet 100 and is used to dissipate heat from the electrical equipment. The cabinet 100 is in the shape of a rectangular parallelepiped as a whole, with its length direction being the X-axis direction, its width direction being the Y-axis direction, and its height direction being the Z-axis direction. The cabinet 100 is provided with a first side wall 101 perpendicular to the X-axis direction.

[0043] See also Figure 2-5 The air heat exchanger 200 is installed on the first side wall 101 , and includes a heat exchange module 10 , a first heat dissipation fan 30 and a second heat dissipation fan 40 .

[0044] The heat exchange module 10 is in a rectangular parallelepiped shape and is embedded in the first side wall 101 . The heat exchange module 10 includes a heat exchange core 120 and a shell 20 .

[0045] See also Figure 3-5 The heat exchange core 120 is accommodated in the housing 20 and cooperates with the housing 20 to form an air collecting chamber 110 located on the first side of the heat exchange core 120 along the X-axis direction. That is, the heat exchange module 10 includes the air collecting chamber 110 located on the first side of the heat exchange core 120 along the X-axis direction. The heat exchange core 120 is provided with an inner air passage and an outer circulation air passage 12 for heat exchange with each other. The inner air passage is connected with the air collecting chamber 110 to form an inner circulation air passage 11, see Figure 3-4The first air duct 111 includes a plurality of first sub-air ducts 1111 arranged along the Z-axis direction and extending along the X-axis direction, one end of the first sub-air duct 1111 is connected to the air collecting cavity 110, and the other end forms an air supply end 113 at the second side of the heat exchange core 120 along the X-axis direction; the second air duct 112 includes a plurality of second sub-air ducts 1121 arranged along the Z-axis direction and extending along the X-axis direction, one end of the second sub-air duct 1121 is connected to the air collecting cavity 110, and the other end forms a return air end 114 at the second side of the heat exchange core 120 along the X-axis direction, and each return air end 114 is arranged along the Z-axis direction; in this embodiment, each supply air end 113 forms an air supply port 01, and each return air end 114 forms a return air port 02. It should be understood that in other embodiments, the first sub-air duct 1111 and the second sub-air duct 1121 can be bent relative to the X-axis direction, such as in an arc or wave shape.

[0046] Specifically, in this embodiment, see Figure 2 The number of the inner air ducts and the outer circulation air ducts 12 is multiple, and each inner air duct and each outer circulation air duct 12 is alternately arranged on the heat exchange core 120 along the Y-axis direction. Figure 4-5 The length ratio of the heat exchange core 120 to the air collecting chamber 110 along the X-axis direction is greater than 3, and the heat exchange module 10 is provided with a detachable dust collecting plate 1101 at the bottom of the air collecting chamber 110 along the Z-axis direction.

[0047] The outer circulation air duct 12 at least partially extends along the Z-axis direction and is provided with an air inlet end 122 and an air outlet end 123. Figure 2 and Figure 5 The outer circulation air duct 12 penetrates the heat exchange core 120 along the Z axis direction, and a plurality of sub-outer air ducts 121 extending along the Z axis direction and parallel to each other are arranged in the outer circulation air duct 12. Each air inlet end 122 forms an air inlet 03, and each air outlet end 123 forms an air outlet 04.

[0048] See also Figure 1-5The shell 20 is embedded in the first side wall 101 and is used to accommodate the above-mentioned heat exchange core 120. The part located inside the cabinet 100 is provided with a first air outlet 21 connected to the air supply outlet 01 and a second air outlet 22 connected to the return air outlet 02. The part located outside the cabinet 100 is provided with a third air outlet 23 connected to the air inlet 03 and a fourth air outlet 24 connected to the air outlet 04, so that the air supply outlet 01 and the return air outlet 02 are both connected to the inside of the cabinet 100, and the air inlet 03 and the air outlet 04 are both connected to the outside of the cabinet 100. In this embodiment, the shell 20 is in the shape of a rectangular parallelepiped, and the length of the shell 20 along the X-axis direction is greater than the length of the heat exchange core 120 along the X-axis direction so as to cooperate with the first side of the heat exchange core 120 along the X-axis direction to form an air collecting chamber 110, the length of the shell 20 along the Y-axis direction is similar to the length of the heat exchange core 120 along the Y-axis direction, and the height of the shell 20 along the Z-axis direction is higher than the heat exchange core 120, and the shell 20 and the heat exchange core 120 form a first interval 25 and a second interval 26 at the bottom and top ends along the Z-axis direction respectively, and the third air outlet 23 and the fourth air outlet 24 are respectively connected to the first interval 25 and the second interval 26; the third air outlet 23 is located at the bottom and outer side of the first interval 25, and the fourth air outlet 24 is located at the outer side of the second interval 26.

[0049] The first heat dissipation fan 30 is fixed relative to the heat exchange module 10 and is used to drive the air to flow from the air supply port 01 to the air return port 02 . In this embodiment, the first heat dissipation fan 30 is fixedly connected to the first air port 21 of the housing 20 .

[0050] The second cooling fan 40 is fixed relative to the heat exchange module 10 and is used to drive the wind to flow from the air inlet 03 to the air outlet 04. In this embodiment, the second cooling fan 40 is placed in the second interval 26 and is lower than the fourth air outlet 24, that is, the fourth air outlet 24 is higher than the second cooling fan 40.

[0051] In the present embodiment, the arrangement of the first air duct 111, the air collecting chamber 110 and the second air duct 112 makes the overall path of the inner circulation air duct 11 close to a U-shape, the path of the inner circulation airflow is long, and compared with the solution where no air collecting chamber is arranged and only the inner circulation air duct includes a plurality of U-shaped pipes, the wind resistance is smaller. Since the outer circulation air duct 12 at least partially extends along the Z-axis direction, the inner circulation airflow can fully exchange heat with the outer circulation airflow in the outer circulation air duct 12, thereby improving the heat exchange efficiency of the heat exchange module 10; wherein, the first air duct 111 includes a plurality of first sub-air ducts 1111 arranged along the Z-axis direction and extending along the X-axis direction, and the second air duct 112 includes a plurality of second sub-air ducts 1121 arranged along the Z-axis direction and extending along the X-axis direction. Compared with only one first sub-air duct 111 being arranged in the first air duct For the solution in which the air duct 1111 and the second air duct 112 are only provided with one second sub-air duct 1121, the heat exchange area of ​​the first air duct 111 is larger, and the heat exchange area of ​​the second air duct 112 is larger, thereby further increasing the heat exchange efficiency of the inner circulation air duct 11 and the outer circulation air duct 12; the provision of the air collecting chamber 110 and the first sub-air ducts 1111 and the second sub-air ducts 1121 all extending in the X-axis direction also make it difficult for dust in the inner circulation air duct to accumulate in the first sub-air duct 1111 and the second sub-air duct 1121, but more easily gather in the air collecting chamber 110, thereby further improving the heat exchange efficiency of the inner circulation air duct 11 and the outer circulation air duct 12; in addition, the above-mentioned provision also allows the first sub-air duct 1111 and the second sub-air duct 1121 to form a straight ventilation duct, which is more convenient for production and processing. Therefore, the structural arrangement of the heat exchange module 10 in this embodiment can well improve the heat exchange efficiency of the heat exchange module 10 and even the air heat exchanger including the heat exchange module 10 .

[0052] Since the wind flows entering each second sub-air duct 1121 through the return air end 114 are located at different heights along the Z-axis direction, the wind flow temperatures of each second sub-air duct 1121 are not consistent. If the wind flow of the second sub-air duct 1121 flows directly to the first sub-air duct 1111, that is, the air collecting chamber 110 is not provided, and the second sub-air duct 1121 is connected to the first sub-air duct 1111 through a separate sub-air duct, then the temperature of the internal circulation wind flow at the air supply end 113 corresponding to each first sub-air duct 1111 is also inconsistent, and the temperature uniformity is poor. When the heat exchanger is used in an electrical cabinet, it will undoubtedly affect the heat dissipation of the electrical equipment in the electrical cabinet, and the air collecting chamber 110 is not provided. 0 is set so that the airflows of each second sub-air duct 1121 can be fully mixed therein before flowing into the first sub-air duct 1111, avoiding large temperature differences at each air supply end 113 and greatly improving the temperature uniformity of the internal circulation airflow; that is, the air collecting chamber 110 in this embodiment can cooperate with the first air duct 111 and the second air duct 112 to make the internal circulation air duct 11 as a whole close to a U-shape, and compared with the solution in which the internal circulation air duct 11 includes multiple U-shaped pipes, the wind resistance is smaller, the heat exchange efficiency of the heat exchanger is increased, and the internal circulation airflows of each second sub-air end can be fully mixed to improve the temperature uniformity of the air supply end 113 of the internal circulation air duct 11.

[0053] In the present embodiment, each first sub-air duct 1111 and each second sub-air duct 1121 extends in the X-axis direction, so that the dust in the inner circulation air duct 11 is not easy to accumulate in the first sub-air duct 1111 and the second sub-air duct 1121, but is more easily gathered in the air collecting cavity 110, thereby further improving the heat exchange efficiency of the inner circulation air duct 11 and the outer circulation air duct 12. In addition, the above-mentioned arrangement also allows the first sub-air duct 1111 and the second sub-air duct 1121 to form a straight air duct, which is more convenient for production and processing, and has smaller wind resistance than other non-straight structural designs.

[0054] In the present embodiment, there are multiple inner air ducts and outer circulation air ducts 12, and the inner air ducts and the outer circulation air ducts 12 are alternately arranged along the Y-axis direction. The outer circulation air ducts 12 fully exchange heat with the inner air ducts, and the heat exchange efficiency is high. The heat exchange has little impact on the air collecting chamber 110, thereby ensuring the uniform temperature of the air supply end 113 of the inner circulation air duct 11.

[0055] In this embodiment, a plurality of sub-external air ducts 121 parallel to each other and extending along the Z-axis direction are provided in the external circulation air duct 12. Compared with a solution in which only one sub-external air duct 121 is formed in the external circulation air duct 12, the heat exchange area of ​​the external circulation air duct 12 is larger, thereby further increasing the heat exchange efficiency of the internal circulation air duct 11 and the external circulation air duct 12.

[0056] In this embodiment, the length ratio of the heat exchange core 120 and the air collecting chamber 110 along the X-axis direction is greater than 3, which not only realizes the full mixing of the airflow of each second air duct 112 in the air collecting chamber 110, but also ensures sufficient heat exchange between the inner air duct and the outer circulation air duct 12.

[0057] In this embodiment, the heat exchange module 10 is provided with a detachable dust collecting plate 1101 at the bottom of the air collecting chamber 110 along the Z-axis direction. Dust falls to the bottom of the air collecting chamber 110 under the action of gravity. In actual application, when the dust in the internal circulation air duct 11 is collected in the air collecting chamber 110, the air collecting chamber 110 can be regularly dusted as needed, thereby avoiding dust clogging and affecting the heat exchange efficiency of the heat exchange module 10.

[0058] In this embodiment, the setting of the first interval 25 and the second interval 26 improves the protectiveness of the external circulation air duct 12 and is conducive to the placement of the second heat dissipation fan 40, wherein the setting of the first interval 25 also ensures that the air inlet end 122 of each external circulation air duct 12 can take in air, the second heat dissipation fan 40 is placed in the second interval 26, and the first heat dissipation fan 30 is fixed to the second air outlet 22 of the shell 20, which is more conducive to the air outlet of the internal circulation air duct 11 and the external circulation air duct 12, and in this way, the third air outlet 23 and the fourth air outlet 24 are respectively located at the bottom and top of the shell 20, so that the air outlet of the fourth air outlet 24 is discharged upward, and it is not easy to enter the third air outlet 23 and cause a heat island effect.

[0059] In this embodiment, the third air outlet 23 is located at the bottom and side of the shell 20 along the Z-axis direction, which is beneficial to increasing the air intake volume. The fourth air outlet 24 is located on the outside of the shell 20. Compared with the structure that is beneficial to forming a bottom air intake and side air outlet structure for the part of the shell 20 located outside the cabinet 100, the protectiveness of the external circulation air duct 12 is improved, making the external circulation air duct 12 less prone to dust accumulation.

[0060] The description of the above specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the enlightenment of the present invention or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent substitutions or other improvements to the embodiments of the present invention or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the present invention.

Claims

1. A heat exchange module (10), characterized in that: It comprises a heat exchange core (120) and an air collecting chamber (110) located on a first side of the heat exchange core (120) along the X-axis direction; the heat exchange core (120) is provided with an inner air duct and an outer circulation air duct (12) for heat exchange with each other; the inner air duct is connected to the air collecting chamber (110) to form an inner circulation air duct (11); the inner air duct comprises a first air duct (111) and a second air duct (112) arranged along the Z-axis direction; the first air duct (111) comprises a plurality of first sub-air ducts (1111); one end of the first sub-air duct (1111) is connected to the air collecting chamber (110) , and the other end forms an air supply end (113) on the second side of the heat exchange core (120) along the X-axis direction, and each air supply end (113) is arranged along the Z-axis direction; the second air duct (112) includes a plurality of second sub-air ducts (1121), one end of the second sub-air ducts (1121) is connected to the air collecting chamber (110), and the other end forms a return air end (114) on the second side of the heat exchange core (120) along the X-axis direction, and each return air end (114) is arranged along the Z-axis direction; the external circulation air duct (12) at least partially extends along the Z-axis direction and is provided with an air inlet end (122) and an air outlet end (123).

2. A heat exchange module (10) according to claim 1, characterized in that: Each first sub-air duct (1111) is arranged along the Z-axis direction and extends along the X-axis direction; each second sub-air duct (1121) is arranged along the Z-axis direction and extends along the X-axis direction.

3. A heat exchange module (10) according to claim 2, characterized in that: The number of the inner air ducts and the outer circulation air ducts (12) is plural, and the inner air ducts and the outer circulation air ducts (12) are alternately arranged on the heat exchange core (120) along the Y-axis direction.

4. A heat exchange module (10) according to claim 3, characterized in that: The outer circulation air duct (12) penetrates the heat exchange core (120) along the Z-axis direction, and a plurality of sub-outer air ducts (121) parallel to each other and extending along the Z-axis direction are arranged in the outer circulation air duct (12).

5. A heat exchange module (10) according to claim 4, characterized in that: The length ratio of the heat exchange core (120) to the air collecting cavity (110) along the X-axis direction is greater than 3.

6. A heat exchange module (10) according to any one of claims 1 to 5, characterized in that: The heat exchange module (10) is provided with a detachable dust collecting plate (1101) at the bottom of the air collecting chamber (110) along the Z-axis direction.

7. An air heat exchanger (200) for installation in an electrical cabinet, the electrical cabinet comprising a cabinet body (100), the cabinet body (100) being provided with a first side wall (101) perpendicular to the X-axis direction, wherein: include A heat exchange module (10), as claimed in any one of claims 1 to 6 and embedded in the first side wall (101), each air supply end (113) forms an air supply port (01), each air return end (114) forms an air return port (02), each air inlet end (122) forms an air inlet (03), and each air outlet end (123) forms an air outlet (04); the air supply port (01) and the air return port (02) are both connected to the inside of the cabinet (100), and the air inlet (03) and the air outlet (04) are both connected to the outside of the cabinet (100); A first heat dissipation fan (30), which is fixed relative to the heat exchange module (10) and is used to drive air to flow from the return air port (02) to the supply air port (01); and The second heat dissipation fan (40) is fixed relative to the heat exchange module (10) and is used to drive air to flow from the air inlet (03) to the air outlet (04).

8. An air heat exchanger (200) according to claim 7, characterized in that: The heat exchange module (10) further comprises a shell (20), the shell (20) being used to accommodate the heat exchange core (120) and cooperate with the heat exchange core (120) to form the air collecting chamber (110), the shell (20) being embedded in the first side wall and the portion thereof located inside the cabinet (100) being provided with a first air port (21) communicating with the air supply port (01) and a second air port (22) communicating with the air return port (02), and the portion thereof located outside the cabinet (100) being provided with a third air port (23) communicating with the air inlet port (03). and a fourth air outlet (24) connected to the air outlet (04); the shell (20) and the heat exchange core (120) respectively form a first interval (25) and a second interval (26) at the bottom and top ends along the Z-axis direction, and the third air outlet (23) and the fourth air outlet (24) are respectively connected to the first interval (25) and the second interval (26); the second heat dissipation fan (40) is placed in the second interval (26), and the first heat dissipation fan (30) is fixedly connected to the first air outlet (21) of the shell (20).

9. An air heat exchanger (200) according to claim 8, characterized in that: The third air outlet (23) is located at the bottom and side of the first interval (25), and the fourth air outlet (24) is located at the side of the second interval (26).

10. An electrical cabinet, characterized in that: It comprises a cabinet (100) and an air heat exchanger (200) according to any one of claims 7 to 9; the cabinet (100) is provided with a first side wall (101) perpendicular to the X-axis direction, and the heat exchange module (10) is embedded in the first side wall (101).

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