Heat exchange device and power cabinet

Abstract

The utility model discloses a heat exchange device and a power cabinet, the heat exchange device comprises a housing and two heat exchange units, and the housing is provided with an air inlet and an air outlet; each heat exchange unit comprises a heat exchange structure and a cooling fan; the two heat exchange structures are arranged in the Y-axis direction and form air outlet channels corresponding to the two air outlets correspondingly, each heat exchange structure comprises two heat exchange parts arranged in the X-axis direction, and each heat exchange part extends in the vertical Z-axis direction and is provided with a part to be cooled and a plurality of air passing channels allowing air to pass in the horizontal direction. The distance between the two heat exchange parts is gradually increased in the direction close to the corresponding air outlets. The two cooling fans are arranged at the two air inlets or the two air outlets correspondingly and used for driving air to flow to the air outlets from the air inlets through the air passing channels of the heat exchange parts. The power cabinet comprises the heat exchange device. The heat dissipation efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of heat dissipation of electrical equipment, and particularly relates to a heat exchange device and a power cabinet. Background Art

[0002] Power cabinets such as centralized photovoltaic inverters and large-scale energy storage converters usually have relatively high heat dissipation requirements. In the field of energy storage, in the prior art, the power cabinet is often cooled by combining air cooling and liquid cooling. For example, in patent CN117641836A, a liquid cooling unit is arranged in the air passing cavity at the top, the heat exchange device is placed in the air passing cavity and provided with two heat exchange parts, one ends of the two heat exchange parts intersect in the horizontal direction, and the other ends are far away from each other. The air passing duct of the heat exchange part passes air in the horizontal direction. In order to avoid the heat island effect caused by the dense arrangement of electrical equipment in the energy storage power station and to ensure that the air flow completely passes through the two heat exchange parts, the heat dissipation fan is arranged horizontally with the heat exchange part and installed at the exhaust port at the top. However, in actual application, limited by the depth and width of the power cabinet, the diameter of the heat dissipation fan cannot be designed too large. Therefore, the air passing volume of the heat exchange device is relatively insufficient, and the heat dissipation efficiency and capacity of the whole heat exchange device are relatively low.

[0003] Obviously, this setting sacrifices the heat dissipation efficiency and capacity in order to ensure top air outlet, and is not suitable for power cabinets with few parallel cabinet requirements and large distances between each other, such as centralized photovoltaic inverters. In addition, the equipment density of the photovoltaic power station is relatively loose, and it is usually built in areas prone to tornadoes or sandstorms. Therefore, the top air outlet setting will also bring more risks of sand and dust accumulation. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above defects or problems existing in the background art, and provide a heat exchange device and a power cabinet with high heat dissipation efficiency and suitable for photovoltaic power stations.

[0005] To achieve the above purpose, the utility model and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:

[0006] Technical solution one and its related embodiments provide a heat exchange device, including a housing, which is provided with first side walls that are parallel and opposite to each other along the horizontal X-axis direction, and second side walls that are parallel and opposite to each other along the horizontal Y-axis direction. Both of the two first side walls are provided with air inlets, and both of the two second side walls are provided with air outlets; and two heat exchange units, which are arranged inside the housing; each heat exchange unit includes a heat exchange structure and a cooling fan; the two heat exchange structures are arranged along the Y-axis direction and respectively correspond to the two air outlets to form air outlet channels. Each heat exchange structure includes two heat exchange parts arranged along the X-axis direction. Each heat exchange part extends along the vertical Z-axis direction and is provided with a part to be cooled and a plurality of air passing channels passing through horizontally. The distance between the two heat exchange parts gradually increases along the direction close to its corresponding air outlet; the two cooling fans are respectively installed at the two air inlets or the two air outlets, and are used to drive air to flow from the air inlet through the air passing channels of each heat exchange part to the air outlet.

[0007] Based on technical solution one, there is also technical solution two. In technical solution two and its related embodiments, it further includes a coolant pipe; the two cooling fans are respectively installed at the two air outlets; the two heat exchange units are arranged at intervals along the Y-axis direction and are both in contact with the top wall of the housing; each heat exchange unit is provided with a liquid supply end and a liquid return end; the liquid supply ends of the two heat exchange units are connected through the coolant pipe to form a total input end, and the liquid return ends of the two heat exchange units are connected through the coolant pipe to form a total output end; the coolant pipe passes through the interval between the two heat exchange units.

[0008] Based on technical solution two, there is also technical solution three. In technical solution three and its related embodiments, one of the two heat exchange parts is defined as the first heat exchange part, and the other is defined as the second heat exchange part. The first heat exchange part is parallel to the Y-axis direction and forms a first interval with the first side wall. The second heat exchange part is inclined relative to both the X-axis direction and the Y-axis direction; both the total input end and the total output end are located in one of the first intervals and are close to the second side wall.

[0009] Based on technical solution three, there is also technical solution four. In technical solution four and its related embodiments, the two first heat exchange parts are far away from each other along the X-axis direction; the air inlet includes a sub-air inlet corresponding to each heat exchange unit.

[0010] Based on technical solution four, there is also technical solution five. In technical solution five and its related embodiments, the heat exchange device further includes a coolant conveying member located inside the housing; each heat exchange structure further includes a connecting plate, and the connecting plate extends along the vertical direction and connects the ends of the two heat exchange parts far away from the cooling fan; the coolant conveying member includes two pumps; the two pumps are respectively located in the two air outlet channels and are connected to the total input end and the total output end through the coolant pipe, and drive the coolant to flow from the total input end to the total output end; the coolant pipe passes through the connecting plate.

[0011] Based on Technical Solution Five, there is also Technical Solution Six. In Technical Solution Six and its related embodiments, it further includes a liquid replenishing member located in one of the first intervals. The coolant pipe is provided with a liquid replenishing end in the first interval where the liquid replenishing member is located. The liquid replenishing member is provided with a liquid replenishing port communicating with the liquid replenishing end, and the liquid replenishing port is higher than the liquid replenishing end; the top of the liquid replenishing member is provided with an expansion cover, and a pressure relief valve is provided on the expansion cover. The distance between the highest water level of the liquid in the liquid replenishing member and the top wall of the liquid replenishing member is greater than a first value.

[0012] Based on Technical Solution Six, there is also Technical Solution Seven. In Technical Solution Seven and its related embodiments, it further includes an electrical connection member; the electrical connection member is used to realize the external electrical connection of the heat exchange device, and it is placed in another first interval close to the second side wall; the liquid replenishing member, the total input end and the total output end are located in the same first interval.

[0013] Based on Technical Solution Seven, there is also Technical Solution Eight. In Technical Solution Eight and its related embodiments, the first heat exchange part is formed by at least two third heat exchange parts attached to each other along its thickness direction, and the second heat exchange part is formed by at least two fourth heat exchange parts attached to each other along its thickness direction.

[0014] Based on Technical Solution Eight, there is also Technical Solution Nine. In Technical Solution Nine and its related embodiments, each third heat exchange part and each fourth heat exchange part are sequentially provided with a liquid inlet part, a part to be cooled and a liquid outlet part along their length directions. The part to be cooled is alternately provided with coolant flow channels and air passing channels along the Z-axis direction. The liquid inlet part is provided with a liquid inlet end, and the liquid outlet part is provided with a liquid outlet end; the liquid inlet parts of two adjacent third heat exchange parts are away from each other so that each third heat exchange part is connected in series, and the liquid inlet parts of two adjacent fourth heat exchange parts are away from each other so that each fourth heat exchange part is connected in series; the liquid inlet ends of the first heat exchange part and the second heat exchange part are connected in parallel with each other to form the liquid supply end of the heat exchange unit, and the liquid outlet ends of the first heat exchange part and the second heat exchange part are connected in parallel with each other to form the liquid return end of the heat exchange unit; the liquid supply ends of the two heat exchange units are connected in parallel to form the total input end, and the liquid return ends are connected in parallel to form the total output end.

[0015] Technical Solution Ten and its related embodiments provide a power cabinet, which includes a cabinet body and the heat exchange device according to any one of Technical Solutions One to Nine. The heat exchange device is placed on the top of the cabinet body, and the length of the cabinet body along the Y-axis direction is greater than its length along the X-axis direction.

[0016] As can be seen from the above description of the present invention and its preferred embodiments, compared with the prior art, the technical solutions and their preferred embodiments of the present invention have the following beneficial effects due to the following technical means:

[0017] In Technical Solution 1 and its preferred embodiments, the air outlet blows air horizontally, and the air passage of the heat exchange part passes air horizontally. It is not easy for dust to enter the heat exchange device from the air outlet, and it is not easy to accumulate sand. The setting of two heat exchange units has a larger heat exchange area and higher heat exchange efficiency compared to setting only one larger heat exchange unit. Since one heat dissipation fan is configured for every two heat exchange parts, and the two heat dissipation fans are respectively installed at two air inlets or two air outlets, the diameter of the heat dissipation fan can be set according to the size of the air inlet or air outlet, the size of the air inlet can be set according to the length of the housing along the Y-axis direction, and the size of the air outlet can be set according to the length of the housing along the X-axis direction. Thus, the heat dissipation fan can have a larger diameter and thus a larger air volume. Therefore, each heat exchange unit has a high heat dissipation efficiency.

[0018] In Technical Solution 2 and its preferred embodiments, the two heat dissipation fans are respectively installed at the two air outlets. Compared with being installed at the air inlets, the air resistance is smaller and the heat dissipation efficiency is higher; the coolant pipe passes through the interval between the two heat exchange units, and the installation of the coolant pipe is convenient. Compared with laying the coolant pipe on the top of the heat exchange part to connect the liquid supply end or the liquid return end of the two heat exchange units, with a certain height of the housing along the Z-axis direction, the heat exchange part has a higher height along the Z-axis direction, thereby improving the heat exchange efficiency. Among them, the air inlet is located on the first side wall, the air outlet is located on the second side wall, and the heat dissipation fan is installed at the air outlet. Thus, a relatively large interval can be formed between the heat exchange unit and the first side wall, and other parts of the heat exchange device can be placed in this interval, making the heat exchange device modular.

[0019] In Technical Solution 3 and its preferred embodiments, the first heat exchange part is parallel to the Y-axis direction and forms an interval with the first side wall, the second heat exchange part is inclined relative to both the X-axis direction and the Y-axis direction, and the total input end and the total output end are located in one of the first intervals and close to the second side wall, making the connection part of the coolant pipe of the entire heat exchange device to the outside more concentrated, thus facilitating connection with other heat-generating components that need heat dissipation, and both installation and maintenance are more convenient; and after being set like this, since the wind direction conversion angle of the first heat exchange part is larger than that of the second heat exchange part, the air resistance of the first heat exchange part is also larger than that of the second heat exchange part. And the above setting makes the length of the second heat exchange part longer than that of the first heat exchange part, thus well achieving the balance of the air passing efficiency of the first heat exchange part and the second heat exchange part, and ensuring the air passing in the included angle area of the heat exchange unit.

[0020] In Technical Solution 4 and its preferred embodiments, the two first heat exchange parts are separated from each other along the X-axis direction, making the interval between the two heat exchange units along the Y-axis direction larger, which is further beneficial to the installation of the coolant pipe; the air inlet includes sub-air inlets corresponding to each heat exchange unit, making each heat exchange unit have a large air intake along the X-axis direction and high heat dissipation efficiency.

[0021] In Technical Solution Five and its preferred embodiments, the coolant delivery member includes two pumps, which are respectively located in two air outlet channels. Compared with a single pump, it not only improves the coolant delivery efficiency but also enhances the space utilization rate within the housing.

[0022] In Technical Solution Six and its preferred embodiments, the liquid replenishing member is located in the first interval, facilitating the maintenance of the liquid replenishing member. The liquid replenishing port of the liquid replenishing member is higher than the liquid replenishing end, enabling the liquid replenishing member to be at the highest position in the liquid path, thereby achieving the automatic liquid replenishing function under the action of gravity, with simple operation. The liquid replenishing member is provided with an expansion cover, and a pressure relief valve is provided on the expansion cover. The distance between the highest water level of the liquid in the liquid replenishing member and the top wall of the liquid replenishing member is greater than a first value. Therefore, when the pipeline pressure of the coolant pipe is relatively high, the pressure of the coolant pipe can flow into the liquid replenishing member. The liquid level in the liquid replenishing member rises and squeezes the gas above the liquid, causing the pressure relief valve on the expansion cover to open, that is, the pressure relief valve on the expansion cover can relieve the pressure of the coolant pipe, preventing the pipeline pressure of the coolant pipe from being too high. When the pipeline pressure of the coolant pipe is relatively low, the liquid replenishing member can replenish the liquid to the replenishing liquid level under the action of gravity. Thus, the liquid replenishing member integrates the functions of a liquid replenishing water tank and an expansion tank, ensuring that the coolant pipe operates under a relatively stable pressure. Therefore, there is no need to set an expansion tank in the heat exchange device, reducing the volume of the heat exchange device and making the structure of the heat exchange device compact and simple.

[0023] In Technical Solution Seven and its preferred embodiments, the electrical connection member that electrically connects the heat exchange device to the outside is placed in the first interval. Compared with placing it around the electrical connection member outside, it is more conducive to protecting the external electrical connection member and is also convenient for maintenance and operation. Among them, the electrical connection member is placed in another first interval close to the second side wall, and the liquid replenishing member, the total input end, and the total output end are located in the same first interval, achieving as much separation of water and electricity as possible and facilitating electrical modular wiring.

[0024] In Technical Solution Eight and its preferred embodiments, the first heat exchange part is formed by at least two third heat exchange parts attached along its thickness direction, and the second heat exchange part is formed by at least two fourth heat exchange parts attached along its thickness direction, enabling the thickness of the first heat exchange part and the second heat exchange part to be adjusted according to the heat dissipation requirements, with a wider range of application scenarios and lower costs.

[0025] In Technical Solution Nine and its preferred embodiments, the liquid inlet parts of two adjacent third heat exchange parts are away from each other so that each third heat exchange part is connected in series, and the liquid inlet parts of two adjacent fourth heat exchange parts are away from each other so that each fourth heat exchange part is connected in series. The liquid inlet ends of the first heat exchange part and the second heat exchange part are connected in parallel to form the liquid supply end of the heat exchange unit, and the liquid outlet ends of the first heat exchange part and the second heat exchange part are connected in parallel to form the liquid return end of the heat exchange unit. The laying of the coolant pipe is more convenient. The liquid supply ends of the two heat exchange units are connected in parallel to form the total input end, and the liquid return ends are connected in parallel to form the total output end. The flow resistance is small, and the pipeline temperature rise is consistent, thereby reducing the power of the pump.

[0026] Technical solution ten has the technical advantages of any one of technical solutions one to nine. The length of the cabinet body along the Y-axis direction is greater than its length along the X-axis direction. Therefore, when multiple power cabinets are used in combination, the multiple power cabinets are often arranged at intervals along the X-axis direction. In this way, the distance between the power cabinets only needs to meet the air intake requirements of adjacent two power cabinets, which is convenient for the arrangement of multiple power cabinets. And when the power cabinets are juxtaposed along the X-axis direction, the hot air outlet direction is the Y-axis direction, and it is not easy to have a short circuit of the hot air flow, nor is it necessary to prevent the short circuit of the hot air flow through mirror setting. Brief Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required to be used in the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0028] Figure 1 Schematic diagram of the power cabinet according to the embodiment of the present invention;

[0029] Figure 2 Top view of the heat exchange device according to Embodiment 1 of the present invention with the top wall hidden;

[0030] Figure 3 Side chamber view of the heat exchange device according to Embodiment 1 of the present invention with one of the first side walls hidden;

[0031] Figure 4 Side view of the heat exchange device according to Embodiment 1 of the present invention with the other first side wall hidden;

[0032] Figure 5 Top view of the heat exchange device according to Embodiment 2 of the present invention with the top wall hidden;

[0033] Figure 6 Partial top view of the heat exchange device according to Embodiment 3 of the present invention with the top wall hidden.

[0034] Main reference numeral description:

[0035] Cabinet body 100; housing 10; first side wall 11; second side wall 12; air inlet 13; sub-air inlet 131; air outlet 14; heat exchange unit 20; cooling fan 21; heat exchange part 22; liquid inlet part 23; part to be cooled 24; liquid outlet part 25; connecting plate 26; first heat exchange part 27; third heat exchange part 271; second heat exchange part 28; fourth heat exchange part 281; total input end 01; total output end 02; coolant pipe 30; liquid supplement end 31; coolant conveying member 40; pump 41; liquid supplement member 50; liquid supplement port 51; expansion cover 52; electrical connection member 60. Detailed implementation mode

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are the preferred embodiments of the present utility model and should not be regarded as excluding other embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model.

[0037] In the claims, the description, and the above-mentioned accompanying drawings of the present utility model, unless otherwise clearly defined, when using terms such as "first", "second", or "third", etc., are for distinguishing different objects and not for describing a specific order.

[0038] In the claims, the description, and the above-mentioned accompanying drawings of the present utility model, unless otherwise clearly defined, for orientation terms, when using terms such as "center", "horizontal", "vertical", "level", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. to indicate the orientation or position relationship, it is based on the orientation and position relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as limiting the specific protection scope of the present utility model.

[0039] In the claims, the description, and the above-mentioned accompanying drawings of the present utility model, unless otherwise clearly defined, when using terms such as "fixed connection" or "fixedly connected", should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two, that is, including non-detachable fixed connection, detachable fixed connection, being integrated as one, and being fixed by other devices or elements.

[0040] In the claims, the description, and the above-mentioned accompanying drawings of the present utility model, when using terms such as "including", "having", and their variants, are intended to mean "including but not limited to".

[0041] In the claims and the description 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 the other direction, and it is not required that it must be implemented in the "X-axis direction", "Y-axis direction", and "Z-axis direction" introduced in the embodiments. In the embodiments, the X-axis direction is perpendicular to the Y-axis direction and also perpendicular to 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 rear, and the Z-axis direction can be divided into up and down.

[0042] Embodiment 1

[0043] See Figures 1-5 , Figures 1-5 which shows a power cabinet, including a cabinet body 100 and a heat exchange device installed on the top of the cabinet body 100.

[0044] See Figure 1 , the cabinet body 100 is in the shape of a cuboid, and its length along the Y-axis direction is greater than its length along the X-axis direction. An accommodation cavity for placing electrical components can be formed inside the cabinet body 100. Among them, the projection of the heat exchange device along the Z-axis direction covers the projection of the cabinet body 100 along the Z-axis direction. In this embodiment, the length of the heat exchange device is the same as the length of the cabinet body 100, and the width of the heat exchange device is the same as the width of the cabinet body 100. Since the length of the cabinet body 100 along the Y-axis direction is greater than its length along the X-axis direction, when multiple power cabinets are used in combination, multiple power cabinets are often arranged at intervals along the X-axis direction. In this way, the distance between the power cabinets only needs to meet the air intake requirements of adjacent two power cabinets, which is convenient for the arrangement of multiple power cabinets.

[0045] See Figures 1-5 , the heat exchange device includes a housing 10, two heat exchange units 20, a coolant pipe 30, a coolant conveying member 40, a liquid replenishing member 50, and an electrical connecting member 60.

[0046] The housing 10 is in the shape of a cuboid, and it is provided with first side walls 11 that are parallel and opposite to each other along the horizontal X-axis direction, and it is provided with second side walls 12 that are parallel and opposite to each other along the horizontal Y-axis direction. Both of the two first side walls 11 are provided with air inlets 13, and both of the two second side walls 12 are provided with air outlets 14. In this embodiment, the length of the housing 10 along the Y-axis direction is greater than its length along the X-axis direction. The air inlet 13 includes two sub-air inlets 131.

[0047] Two heat exchange units 20 are arranged inside the housing 10; each heat exchange unit 20 includes a heat exchange structure and a heat dissipation fan 21; the two heat exchange structures are arranged along the Y-axis direction and respectively correspond to the two air outlets 14 to form air outlet channels. Each heat exchange structure includes two heat exchange parts 22 arranged along the X-axis direction. Each heat exchange part 22 extends along the vertical Z-axis direction and is provided with a part to be cooled 24 and a plurality of air passing channels passing through horizontally. The distance between the two heat exchange parts 22 gradually increases along the direction close to its corresponding air outlet 14; each heat exchange part 22 is sequentially provided with a liquid inlet part 23, a part to be cooled 24, and a liquid outlet part 25 along its length direction. The liquid inlet part 23 is provided with a liquid inlet end, the liquid outlet part 25 is provided with a liquid outlet end, and the part to be cooled 24 is alternately provided with coolant flow channels and air passing channels along the Z-axis direction. Both ends of each coolant flow channel are respectively communicated with the liquid inlet part 23 and the liquid outlet part 25; the two heat dissipation fans 21 are respectively installed at the two air inlets 13 or the two air outlets 14, and are used to drive air to flow from the air inlet 13 through the air passing channels of each heat exchange part 22 to the air outlet 14.

[0048] In this embodiment, two heat dissipation fans 21 are respectively installed at two air outlets 14, and two heat exchange units 20 are arranged in the housing 10 along the Y-axis direction, and each heat exchange unit 20 corresponds to a sub-air inlet 131. Wherein, each heat exchange unit 20 further includes a connecting plate 26, and the connecting plate 26 extends in the vertical direction and connects one ends of the two heat exchange parts 22 away from the heat dissipation fan 21; in this embodiment, the cross section of the connecting plate 26 is U-shaped, its opening faces the heat dissipation fan 21, and its two sides are respectively connected to the two heat exchange parts 22.

[0049] In this embodiment, the air outlet 14 blows air horizontally, and the air passage of the heat exchange part 22 passes through air horizontally, so it is not easy for dust to enter the heat exchange device from the air outlet 14, and it is not easy to accumulate sand. The setting of two heat exchange units has a larger heat exchange area and higher heat exchange efficiency compared with setting only one larger heat exchange unit. Since one heat dissipation fan 21 is configured for every two heat exchange parts, and the two heat dissipation fans 21 are respectively installed at two air inlets 13 or two air outlets 14, the diameter of the heat dissipation fan 21 can be set according to the size of the air inlet 13 or the air outlet 14, and the size of the air inlet 13 can be set according to the length of the housing along the Y-axis direction, and the size of the air outlet 14 can be set according to the length of the housing along the X-axis direction, so that the heat dissipation fan 21 can have a larger diameter and thus have a larger air volume. Therefore, each heat exchange unit has a high heat dissipation efficiency.

[0050] In this embodiment, the two heat dissipation fans 21 are respectively installed at the two air outlets 14. Compared with being installed at the air inlets 13, the air resistance is smaller and the heat dissipation efficiency is higher; wherein, the air inlet 13 is located on the first side wall 11, and the air outlet 14 is located on the second side wall 12. Therefore, a larger interval can be formed between the heat exchange unit 20 and the first side wall 11, and other parts of the heat exchange device can be placed in this interval, so that the heat exchange device is modular. The air inlet 13 includes a sub-air inlet 131 corresponding to each heat exchange unit 20, so that each heat exchange unit 20 has a large air intake volume in the X-axis direction and high heat dissipation efficiency.

[0051] In practical applications, each liquid inlet end can be connected in parallel or in series through a coolant pipe 30 to form a liquid supply end of the heat exchange unit 20, and each liquid outlet end can be connected in parallel or in series through a coolant pipe 30 to form a liquid return end of the heat exchange unit 20, that is, each heat exchange unit 20 is provided with a liquid supply end and a liquid return end. The liquid supply ends of the two heat exchange units 20 are connected through a coolant pipe 30 to form a total input end 01, and the liquid return ends of the two heat exchange units 20 are connected through a coolant pipe 30 to form a total output end 02.

[0052] In this embodiment, two heat exchange units 20 are arranged at intervals along the Y-axis direction and are both in contact with the top wall of the housing 10. This interval does not have to be too large, and the coolant pipe 30 passes through this interval. In this way, the installation of the coolant pipe 30 is convenient. Compared with laying the coolant pipe 30 on the top of the heat exchange part 22 to connect the liquid supply end or the liquid return end of the two heat exchange units 20, when the height of the housing 10 along the Z-axis direction is certain, the heat exchange part 22 has a higher height along the Z-axis direction, thereby improving the heat exchange efficiency.

[0053] The coolant delivery member 40 is placed inside the housing 10. Figure 2 In, the coolant delivery member 40 includes two pumps 41. The two pumps 41 are respectively located in two air outlet channels and are connected to the total input end 01 and the total output end 02 through the coolant pipe 30, and drive the coolant to flow from the total input end 01 to the total output end 02; the coolant pipe 30 passes through the connecting plate 26. Here, the air outlet channel is the area formed by enclosing the two heat exchange parts 22 and the connecting plate 26 and facing the air outlet; such a setting improves the delivery efficiency of the coolant and also improves the utilization rate of the space inside the housing 10.

[0054] Still referring to Figure 2 , define one of the two heat exchange parts 22 as the first heat exchange part 27 and the other as the second heat exchange part 28. The first heat exchange part 27 is parallel to the Y-axis direction and forms a first interval with the first side wall 11. The second heat exchange part 28 is inclined relative to both the X-axis direction and the Y-axis direction; the two first heat exchange parts 27 are away from each other along the X-axis direction. The total input end 01 and the total output end 02 are located in one of the first intervals and are close to the second side wall 12. In this way, the connection part of the coolant pipe 30 of the entire heat exchange device to the outside is more concentrated, so as to facilitate the connection with other heating components that need to be cooled, and the installation and maintenance are more convenient; and after such a setting, since the wind direction conversion angle of the first heat exchange part 27 is larger than the wind direction conversion angle of the second heat exchange part 28, the wind resistance of the first heat exchange part 27 is also larger than that of the second heat exchange part 28. And the above setting makes the length of the second heat exchange part 28 longer than that of the first heat exchange part 27, thus well realizing the balance of the air passing efficiency of the first heat exchange part 27 and the second heat exchange part 28, and thus ensuring the air passing through the included angle area of the heat exchange unit 20. The two first heat exchange parts 27 are away from each other along the X-axis direction, making the interval between the two heat exchange units 20 along the Y-axis direction larger, which is further beneficial to the installation of the coolant pipe 30.

[0055] The liquid supplement member 50 is located in one of the first intervals. In this embodiment, the liquid supplement member 50 is located in the same first interval as the total input end 01 and the total output end 02. Refer to Figure 3, the coolant pipe 30 is provided with a liquid replenishment end 31 within the first interval where the liquid replenishment member 50 is located. The liquid replenishment member 50 is provided with a liquid replenishment port 51 communicating with the liquid replenishment end 31, and the liquid replenishment port 51 is higher than the liquid replenishment end 31; the top of the liquid replenishment member 50 is provided with an expansion cover 52, and a pressure relief valve is provided on the expansion cover 52. The pressure relief valve belongs to the prior art and will not be elaborated in this embodiment. The distance between the highest water level of the liquid in the liquid replenishment member 50 and the top wall of the liquid replenishment member 50 is greater than a first value. This facilitates the maintenance of the liquid replenishment member 50. The liquid replenishment port 51 of the liquid replenishment member 50 is higher than the liquid replenishment end 31, so that the liquid replenishment member 50 is located at the highest position of the liquid path and can automatically replenish the liquid to the liquid replenishment end 31 under the action of gravity, with simple operation. The liquid replenishment member 50 is provided with an expansion cover 52, and a pressure relief valve is provided on the expansion cover 52. The distance between the highest water level of the liquid in the liquid replenishment member 50 and the top wall of the liquid replenishment member 50 is greater than a first value. Therefore, when the pipeline pressure of the coolant pipe 30 is relatively large, the pressure of the pipeline of the coolant pipe 30 can flow to the liquid replenishment member 50, the liquid level of the liquid replenishment member 50 rises and squeezes the gas above the liquid, causing the pressure relief valve on the expansion cover 52 to open, that is, the pressure relief valve on the expansion cover 52 can relieve the pressure of the pipeline of the coolant pipe 30 to prevent the pipeline pressure of the coolant pipe 30 from being too large. When the pipeline pressure of the coolant pipe 30 is relatively small, the liquid replenishment member 50 can replenish the liquid to the liquid replenishment level under the action of gravity. Thus, the liquid replenishment member 50 integrates the functions of a liquid replenishment water tank and an expansion tank, ensuring that the pipeline of the coolant pipe 30 operates under a relatively stable pressure. Therefore, there is no need to set an expansion tank in the heat exchange device, reducing the volume of the heat exchange device and making the structure of the heat exchange device compact and simple.

[0056] See Figure 2 and Figure 4 , the electrical connection member 60 is used to realize the external electrical connection of the heat exchange device and is placed in another first interval close to the second side wall 12. Placing the electrical connection member 60 for externally connecting the heat exchange device in the first interval is more conducive to protecting the electrical connection member compared to placing it around the external electrical connection member, and is also convenient for maintenance and operation. Among them, the electrical connection member 60 is placed in another first interval close to the second side wall 12, and the liquid replenishment member 50, the total input end 01, and the total output end 02 are located in the same first interval, realizing the separation of water and electricity as much as possible and facilitating electrical modular wiring.

[0057] When the power cabinets of this application are paralleled in the X-axis direction, the hot air outlet direction is the Y-axis direction, and it is not easy to have a short circuit of the hot air flow, nor is it necessary to prevent the short circuit of the hot air flow through mirror setting.

[0058] Embodiment 2

[0059] Embodiment 2 is basically the same as Embodiment 1, the difference is that, see Figure 5, the first heat exchange part 27 is formed by at least two third heat exchange parts 271 attached to each other along its thickness direction, the second heat exchange part 28 is formed by at least two fourth heat exchange parts 281 attached to each other along its thickness direction, a liquid inlet part 23, a part to be cooled 24, and a liquid outlet part 25 are sequentially arranged along the length direction of each third heat exchange part 271 and each fourth heat exchange part 281, a coolant flow channel and an air passing channel are alternately arranged on the part to be cooled 24 along the Z-axis direction, the liquid inlet part 23 is provided with a liquid inlet end, and the liquid outlet part 25 is provided with a liquid outlet end; the liquid inlet parts 23 of two adjacent third heat exchange parts 271 are far away from each other so that the third heat exchange parts 271 are connected in series, and the liquid inlet parts 23 of two adjacent fourth heat exchange parts 281 are far away from each other so that the fourth heat exchange parts 281 are connected in series; Figure 5 In Figure 5 , the first heat exchange part 27 includes two third heat exchange parts 271, the second heat exchange part 28 includes two fourth heat exchange parts 281, the liquid inlet ends of the first heat exchange part 27 and the second heat exchange part 28 are connected in parallel with each other to form the liquid supply end of the heat exchange unit 20, the liquid outlet ends of the first heat exchange part 27 and the second heat exchange part 28 are connected in parallel with each other to form the liquid return end of the heat exchange unit 20, the liquid supply ends of the two heat exchange units 20 are connected in parallel to form the total input end 01, and the liquid return ends are connected in parallel to form the total output end 02.

[0060] The above setting enables the thickness of the first heat exchange part 27 to be adjusted according to the heat dissipation requirement, with a wider application scenario and lower cost. The liquid inlet parts 23 of two adjacent third heat exchange parts 271 are far away from each other so that the third heat exchange parts 271 are connected in series, and the liquid inlet parts 23 of two adjacent fourth heat exchange parts 281 are far away from each other so that the fourth heat exchange parts 281 are connected in series, facilitating the laying of the coolant pipe 30. The liquid inlet ends of the first heat exchange part 27 and the second heat exchange part 28 are connected in parallel with each other to form the liquid supply end of the heat exchange unit 20, the liquid outlet ends of the first heat exchange part 27 and the second heat exchange part 28 are connected in parallel with each other to form the liquid return end of the heat exchange unit 20, the liquid supply ends of the two heat exchange units 20 are connected in parallel to form the total input end 01, and the liquid return ends are connected in parallel to form the total output end 02, with small flow resistance and consistent pipeline temperature rise, thereby reducing the power of the pump 41.

[0061] Embodiment 3

[0062] The structure of Embodiment 3 is basically the same as that of Embodiment 1, the difference is that, referring to Figure 6 , the lengths of the two heat exchange parts 22 in Embodiment 3 are the same and both are inclined with respect to the X-axis direction and the Y-axis direction. The liquid supplementing part 50 and the electrical connecting part 60 are respectively placed in the gap between the heat exchange unit 20 and the first side wall 11.

[0063] The above setting facilitates the processing of the heat exchange part 22 and the installation of the heat exchange unit 20. In addition, the heat exchange area is larger, the heat exchange efficiency is higher, and the heat dissipation efficiency is also higher.

[0064] The description of the above specification and embodiments is used to explain the protection scope of the present utility model, but does not constitute a limitation to the protection scope of the present utility model. Modifications, equivalent replacements or other improvements to the embodiments of the present utility model or some of its technical features obtained by those of ordinary skill in the art through logical analysis, reasoning or limited experiments in combination with common general knowledge, ordinary technical knowledge in this field and / or the prior art under the inspiration of the present utility model or the above embodiments shall all be included within the protection scope of the present utility model.

Claims

1. A heat exchange device, characterized in that: include A housing (10), wherein first side walls (11) are arranged along a horizontal X-axis direction and are opposite to each other, and second side walls (12) are arranged along a horizontal Y-axis direction and are opposite to each other, wherein the two first side walls (11) are each provided with an air inlet (13), and the two second side walls (12) are each provided with an air outlet (14); and Two heat exchange units (20) are arranged in a housing (10); each heat exchange unit (20) comprises a heat exchange structure and a heat dissipation fan (21); the two heat exchange structures are arranged along the Y-axis direction and correspond to two air outlets (14) to form an air outlet channel, each heat exchange structure comprises two heat exchange parts (22) arranged along the X-axis direction, each heat exchange part (22) extends along the vertical Z-axis direction and is provided with a part to be cooled (24) and a plurality of air passages for passing air in the horizontal direction, and the distance between the two heat exchange parts (22) gradually increases in the direction approaching the corresponding air outlet (14); the two heat dissipation fans (21) are respectively installed at the two air inlets (13) or the two air outlets (14), and are used to drive air from the air inlet (13) through the air passages of each heat exchange part (22) to the air outlet (14).

2. A heat exchange device according to claim 1, characterized in that: It also includes a cooling liquid pipe (30); two heat dissipation fans (21) are respectively installed at the two air outlets (14); two heat exchange units (20) are arranged at intervals along the Y-axis direction and are both in contact with the top wall of the shell (10); each heat exchange unit (20) is provided with a liquid supply end and a liquid return end, the liquid supply ends of the two heat exchange units (20) are connected through the cooling liquid pipe (30) to form a total input end (01), and the liquid return ends of the two heat exchange units (20) are connected through the cooling liquid pipe (30) to form a total output end (02); the cooling liquid pipe (30) passes through the interval between the two heat exchange units (20).

3. A heat exchange device according to claim 2, characterized in that: One of the two heat exchange parts (22) is a first heat exchange part (27), and the other is a second heat exchange part (28); the first heat exchange part (27) is parallel to the Y-axis direction and forms a first interval with the first side wall (11); the second heat exchange part (28) is inclined relative to both the X-axis direction and the Y-axis direction; the total input end (01) and the total output end (02) are both located in one of the first intervals and close to the second side wall (12).

4. A heat exchange device according to claim 3, characterized in that: The two first heat exchange parts (27) are separated from each other along the X-axis direction; and the air inlet (13) comprises a sub-air inlet (131) corresponding to each heat exchange unit (20).

5. A heat exchange device according to claim 4, characterized in that: The heat exchange device further comprises a coolant conveying member (40) located in the housing (10); each heat exchange structure further comprises a connecting plate (26), the connecting plate (26) extending in a vertical direction and connecting one end of the two heat exchange parts (22) away from the heat dissipation fan (21); the coolant conveying member (40) comprises two pumps (41); the two pumps (41) are respectively located in two air outlet channels and are connected to the total input end (01) and the total output end (02) through the coolant pipe (30), and drive the coolant to flow from the total input end (01) to the total output end (02); The coolant pipe (30) passes through the connecting plate (26).

6. A heat exchange device according to claim 5, characterized in that: It also includes a fluid replenishing part (50) located in one of the first intervals, the cooling liquid tube (30) is provided with a fluid replenishing end (31) in the first interval where the fluid replenishing part (50) is located, the fluid replenishing part (50) is provided with a fluid replenishing port (51) connected to the fluid replenishing end (31), and the fluid replenishing port (51) is higher than the fluid replenishing end (31); an expansion cover (52) is provided at the top end of the fluid replenishing part (50), and a pressure relief valve is provided on the expansion cover (52), and the distance between the highest water level of the liquid in the fluid replenishing part (50) and the top wall of the fluid replenishing part (50) is greater than the first value.

7. A heat exchange device according to claim 6, characterized in that: It also includes an electrical connector (60); the electrical connector (60) is used to realize electrical connection between the heat exchange device and the outside, and is placed in another first compartment close to the second side wall (12); the liquid replenishing component (50) and the total input end (01) and the total output end (02) are located in the same first compartment.

8. A heat exchange device according to claim 7, characterized in that: The first heat exchange portion (27) is formed by at least two third heat exchange portions (271) bonded together along its thickness direction, and the second heat exchange portion (28) is formed by at least two fourth heat exchange portions (281) bonded together along its thickness direction.

9. A heat exchange device according to claim 8, characterized in that: Each third heat exchange section (271) and each fourth heat exchange section (281) are provided with a liquid inlet section (23), a section to be cooled (24) and a liquid outlet section (25) in sequence along the length direction thereof; the section to be cooled (24) is provided with cooling liquid flow channels and air passages alternately arranged along the Z-axis direction; the liquid inlet section (23) is provided with a liquid inlet end, and the liquid outlet section (25) is provided with a liquid outlet end; the liquid inlets (23) of two adjacent third heat exchange sections (271) are spaced apart from each other so that the third heat exchange sections (271) are connected in series, and the adjacent two The liquid inlet parts (23) of the fourth heat exchange parts (281) are separated from each other so that the fourth heat exchange parts (281) are connected in series; the liquid inlet ends of the first heat exchange part (27) and the second heat exchange part (28) are connected in parallel to form the liquid supply end of the heat exchange unit (20), and the liquid outlet ends of the first heat exchange part (27) and the second heat exchange part (28) are connected in parallel to form the liquid return end of the heat exchange unit (20); the liquid supply ends of the two heat exchange units (20) are connected in parallel to form the total input end (01), and the liquid return ends are connected in parallel to form the total output end (02).

10. A power cabinet, characterized in that: It comprises a cabinet (100) and a heat exchange device as described in any one of claims 1 to 9, wherein the heat exchange device is placed on the top of the cabinet (100), and the length of the cabinet (100) along the Y-axis direction is greater than the length along the X-axis direction.

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