Dehumidification device and electrical equipment

Abstract

The utility model relates to a dehumidification device and electrical equipment, and belongs to the technical field of electrical equipment, the dehumidification device is applied to the electrical equipment, the dehumidification device comprises a radiator, the radiator is provided with a first flow channel and a second flow channel, and the first flow channel is used for being communicated with the interior of a box body of the electrical equipment; the second flow channel is provided with a first port and a second port, the first port is communicated with the first flow channel, the second port is used for being communicated with the external environment of the box body, and the second flow channel is configured to enable a medium to circulate from the first port to the second port; according to the invention, dehumidification is realized through cooperation of airflow circulation and condensation of wet air by the radiator, and the second flow channel is used for discharging condensed water and passively preventing reverse osmosis of external high-humidity air, so that the safety and the service life of electrical equipment are guaranteed; the first flow channel and the second flow channel are integrated on the radiator, so that the occupied space of an additional pipeline or an independent flow channel structure is reduced, the whole structure of the dehumidification device is compact, and the occupied space is reduced.

Description

Dehumidifiers and electrical equipment Technical Field

[0001] This application relates to the field of electrical equipment technology, and more particularly to a dehumidification device and electrical equipment. Background Technology

[0002] In outdoor settings, photovoltaic and energy storage power equipment is prone to condensation inside its sealed enclosure, especially in high-temperature and high-humidity environments. Prolonged condensation can cause irreversible damage, reducing the equipment's reliability and lifespan. Therefore, dehumidification devices are typically installed to dehumidify the air inside the enclosure and maintain a dry environment. However, installing a dehumidifier alone significantly increases the equipment's size, making it unsuitable for small to medium power electrical equipment. Summary of the Invention

[0003] This application provides a dehumidification device to solve the technical problem that setting up a separate dehumidification device would increase the size of the equipment; another objective of this application is to provide an electrical device.

[0004] To achieve the above objectives, according to a first aspect of this application, a dehumidification device is provided for use in electrical equipment, the dehumidification device comprising:

[0005] A radiator having a first flow channel and a second flow channel, the first flow channel being used to communicate with the internal space of the enclosure of the electrical equipment;

[0006] The second flow channel has a first port and a second port, the first port being connected to the first flow channel and the second port being connected to the external space of the housing, and the second flow channel being configured to limit the flow of medium entering the second flow channel from the first port to the second port.

[0007] Optionally, the second flow channel includes a main flow channel and a branch flow channel, the first port and the second port are disposed in the main flow channel, and the branch flow channel has a third port and a fourth port, the third port and the fourth port being respectively connected to the main flow channel;

[0008] When the medium flows from the first port to the second port, the medium flows through the third port to the fourth port, and the direction in which the medium flows out of the fourth port is the same as the direction of medium flow in the main channel;

[0009] When the medium flows from the second port to the first port, the medium flows through the fourth port to the third port, and the direction of the medium flowing out of the third port is opposite to the direction of the medium flow in the main channel.

[0010] Optionally, the number of tributary channels is set to multiple and distributed on both sides of the main channel, with the multiple tributary channels arranged from the first port to the second port.

[0011] Optionally, the first flow channel extends along a first direction, and the number of second flow channels is set to multiple, with the multiple second flow channels arranged at intervals along the first direction.

[0012] Optionally, the radiator includes a main body and a sealing part, wherein the first flow channel and the second flow channel are disposed in the main body;

[0013] The sealing part covers the first flow channel and the second flow channel, and the sealing part has multiple through holes, which respectively connect the first flow channel and the internal space of the box.

[0014] Optionally, the dehumidification device further includes a plurality of waterproof and breathable components, each of which corresponds to a through hole. One end of the waterproof and breathable component is disposed in the through hole and connected to the sealing part, and the other end of the waterproof and breathable component is used to connect to the box body and respectively connect the internal space of the box body and the through hole.

[0015] Optionally, the waterproof and breathable component includes a waterproof and breathable valve.

[0016] Optionally, among the plurality of through holes, at least one of the through holes is a first through hole and at least another through hole is a second through hole. The first through hole and the second through hole are respectively disposed at both ends of the first flow channel along the first direction. The first through hole is used to allow the medium inside the box to enter the first flow channel, and the second through hole is used to allow the medium in the first flow channel to enter the internal space of the box.

[0017] The second flow channel is disposed between the first through hole and the second through hole.

[0018] Optionally, the dehumidification device further includes a fan disposed inside the housing, the fan being used to draw gas inside the housing into the first flow channel.

[0019] According to a second aspect of this application, an electrical device is provided, including a housing and the aforementioned dehumidification device, the dehumidification device being configured to dehumidify the interior space of the housing.

[0020] Optionally, the radiator is located on the outside of the housing;

[0021] Alternatively, the radiator may be located inside the housing.

[0022] In the dehumidification device of this application embodiment, high-humidity air inside the chamber is drawn into the first flow channel. The humid air is then condensed into liquid water by the cooling effect of the radiator. The liquid water flows out through the second flow channel, and the dehumidified air returns to the chamber. This cycle maintains the required electrical environment inside the chamber, ensuring the safety and lifespan of the electrical equipment. The first and second flow channels are integrated into the radiator, reducing the space occupied by additional piping or independent flow channel structures, making the overall structure of the dehumidification device compact and space-saving. The unidirectional flow characteristic of the second flow channel passively prevents the reverse infiltration of high-humidity external air, improving the safety of the electrical equipment.

[0023] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0026] Figure 1 is a schematic diagram of the dehumidification device provided in an embodiment of this application;

[0027] Figure 2 is an exploded view of the dehumidification device provided in an embodiment of this application;

[0028] Figure 3 is a schematic diagram of the structure of the first flow channel and the second flow channel provided in the embodiment of this application;

[0029] Figure 4 is a schematic diagram of the structure of the second flow channel provided in an embodiment of this application;

[0030] Figure 5 is a structural schematic diagram of the dehumidification device provided in an embodiment of this application from another perspective;

[0031] Figure 6 is a schematic diagram showing the positions of the fan and the waterproof and breathable valve provided in the embodiment of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Radiator; 11. Main body; 111. First flow channel; 112. Second flow channel; 1121. First port; 1122. Second port; 1123. Main flow channel; 1124. Branch flow channel; 1125. Third port; 1126. Fourth port; 12. Sealing part; 121. Through hole; 1211. First through hole; 1212. Second through hole; 13. Heat dissipation part; 2. Fan; 3. Waterproof and breathable component; 31. Waterproof and breathable valve; 4. Housing; X. First direction. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0034] In the description of this application, it should be understood that the terms "height," "thickness," "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, and "at least one" can mean one, two, or more, unless otherwise expressly specified.

[0035] It should also be noted that in the accompanying drawings of the embodiments of this application, the arrow marked with X represents the first direction X. The first direction X is introduced to more clearly illustrate the structure and relative positional relationship of each component in the dehumidification device. In practical applications, the first direction X may change depending on the placement of the dehumidification device.

[0036] Referring to Figures 1, 2, and 3, this application provides a dehumidification device. As shown in Figures 1 and 2, the dehumidification device is applied to electrical equipment, which includes a housing 4. The dehumidification device includes a radiator 1, which has a first flow channel 111 and a second flow channel 112. The first flow channel 111 communicates with the internal space of the housing 4. This communication can be achieved through a pipe, a perforated structure, or a flow channel structure connecting the first flow channel 111 and the housing 4. Alternatively, the inlet and outlet of the first flow channel 111 can be located within the internal space of the housing 4, meaning a portion of the radiator 1 is located inside the housing 4. It is understood that the inlet and outlet of the first flow channel 111 can be one or more. Similarly, the flow channel structure formed by the combination of the first flow channel 111 and the second flow channel 112 can be one or more, as long as the first flow channel 111 in each flow channel structure can communicate with the internal space of the housing 4; the number is not specifically limited. The heat sink 1 can be one of the following: air-cooled, liquid-cooled, phase-change, or thermoelectric coupling type. It can also be a heat sink with high thermal conductivity, such as aluminum alloy or copper. In this embodiment, the air-cooled heat sink 1 is preferred.

[0037] The second flow channel 112 has a first port 1121 and a second port 1122. The first port 1121 is connected to the first flow channel 111, and the second port 1122 is used to connect to the external space of the housing 4. The second flow channel 112 is configured to limit the flow of the medium entering the second flow channel 112 from the first port 1121 to the second port 1122.

[0038] High-humidity air inside the housing 4 enters the first flow channel 111. Since the temperature of the radiator 1 is lower than the gas temperature, the supersaturated humid air condenses into liquid water upon cooling and flows out through the second flow channel 112. The remaining low-humidity gas flows back into the housing 4 through the outlet of the first flow channel 111, thus achieving dehumidification of the interior of the housing 4. At the same time, the second flow channel 112 can passively prevent the reverse infiltration of high-humidity air from the outside, ensuring the safety and service life of the electrical equipment.

[0039] Referring to Figures 3 and 4, in some embodiments, the second flow channel 112 is a Tesla valve-type flow channel, which includes a main flow channel 1123 and a branch flow channel 1124. The main flow channel 1123 has a first port 1121 and a second port 1122, and extends in a curved manner from the first port 1121 to the second port 1122. The branch flow channel 1124 is arc-shaped and has a third port 1125 and a fourth port 1126, which are respectively connected to the main flow channel 1123. When the medium flows from the first port 1121 to the second port 1122, it flows through the third port 1125 to the fourth port 1126. The direction of the medium flowing out of the fourth port 1126 is the same as the flow direction of the medium in the main channel 1123. The pressure loss of the main channel 1123 is low, and it can pass smoothly. When the medium flows from the second port 1122 to the first port 1121, it flows through the fourth port 1126 to the third port 1125. The direction of the medium flowing out of the third port 1125 is opposite to the flow direction of the medium in the main channel 1123. That is, the medium in the branch channel 1124 collides with the medium in the main channel 1123, forming eddies and turbulence, resulting in a large amount of kinetic energy dissipation. Therefore, the effective flow rate of the reverse flow is greatly reduced, thereby realizing unidirectional flow control. This is convenient and quick, avoiding the wear and aging problems caused by relying on mechanical structures to achieve unidirectional flow, meeting the long-term operation requirements of power equipment, and occupying little space. In some other embodiments, a one-way valve can be combined with the second flow channel 112 to achieve one-way flow. In order to enhance the barrier against liquid water, a hydrophobic and breathable membrane can be provided at the second port 1122.

[0040] Referring to Figure 4, in some embodiments, multiple branch channels 1124 are provided and distributed on both sides of the main channel 1123, with the multiple branch channels 1124 arranged from the first port 1121 to the second port 1122. Multiple branch channels 1124 facilitate an enhancement mechanism, increasing the flow efficiency. The number of branch channels 1124 can be determined according to the space size of the heat sink 1, to balance unidirectional flow and ease of manufacturing.

[0041] Referring to Figure 3, in some embodiments, the first flow channel 111 extends along the first direction X, and the number of second flow channels 112 is provided in multiples, and the multiple second flow channels 112 are arranged at intervals along the first direction X.

[0042] The first direction X can be either the length or width of the housing 4, to sufficiently extend the length of the first flow channel 111 and increase its condensation area, allowing the humid air within the first flow channel 111 to condense fully. Furthermore, the gentle extension direction of the first flow channel 111 minimizes the flow resistance of the internal medium. Multiple second flow channels 112 are arranged in parallel, which on the one hand diverts the flow from the first flow channel 111, and on the other hand, during the flow of the medium within the first flow channel 111, liquid water can be discharged from the nearest second flow channel 112, accelerating the discharge speed and reducing stagnation. Multiple second flow channels 112 also increase the condensation area of ​​the gas, causing some of the humid air entering the second flow channels 112 to condense quickly, improving the overall dehumidification rate.

[0043] When a dehumidifier is installed on an electrical device, the first direction X is preferably parallel to the ground in the environment where the electrical device is located, so that the second flow channel 112 is perpendicular to the ground and the second port 1122 is distributed downward. At this time, the extension direction of the second flow channel 112 is the same as the direction of gravity of the liquid water, which helps to accelerate the discharge speed of the liquid water.

[0044] Referring to Figures 2 and 5, in some embodiments, the radiator 1 includes a main body 11 and a sealing part 12. A first flow channel 111 and a second flow channel 112 are disposed on the main body 11. The sealing part 12 covers the first flow channel 111 and the second flow channel 112 and is connected to the main body 11. The sealing part 12 has multiple through holes 121, which connect the first flow channel 111 and the internal space of the housing 4. The first flow channel 111 and the second flow channel 112 are recessed structures on one side of the main body 11, occupying little space. Compared to the first flow channel 111 and the second flow channel 112 being independent components, the medium in the first flow channel 111 can directly exchange heat with the main body 11, enhancing heat exchange efficiency. The sealing part 12 has surface contact with the main body 11, resulting in a simple structure and a large coverage area, which relatively reduces the positional accuracy requirements when the two are fitted together, facilitating assembly.

[0045] In this embodiment, the main body 11 is disposed opposite to the housing 4. The first flow channel 111 and the second flow channel 112 are disposed on the side of the main body 11 facing the housing 4, so as to minimize the communication distance between the first flow channel 111 and the internal space of the housing 4. Multiple heat dissipation sections 13 are arranged at intervals on the side of the main body 11 facing away from the housing 4. The heat dissipation sections 13 can be fins or pin-fin structures to improve the heat exchange effect with the cooling airflow. The pin-fin structure consists of multiple columnar protrusions perpendicular to the surface of the radiator 1. The cross-sectional shape of each columnar protrusion is circular, elliptical, or polygonal. The columnar protrusions are distributed in an array on the surface of the radiator 1, thereby increasing the heat dissipation surface area and enhancing the heat exchange efficiency.

[0046] In some other embodiments, the main body 11 and the sealing part 12 may each be provided with a first flow channel 111 and a second flow channel 112, and the cross-sectional area of ​​the flow channel is expanded by the relative combination of the first flow channel 111 and the second flow channel 112.

[0047] Referring to Figures 1 and 2, in some embodiments, the dehumidification device further includes multiple waterproof and breathable components 3. Each waterproof and breathable component 3 corresponds to a through hole 121. One end of the waterproof and breathable component 3 is disposed within the through hole 121 and connected to the sealing part 12. The other end of the waterproof and breathable component 3 is used to connect to the housing 4, and respectively connects the internal space of the housing 4 and the through hole 121, thereby allowing the through hole 121 to connect the first flow channel 111 and the internal space of the housing 4 through the waterproof and breathable component 3. The waterproof and breathable component 3 can prevent the passage of liquid water, but allows air to circulate freely, thus balancing the internal and external air pressure of the housing 4 and limiting the backflow of condensate into the housing 4, further improving the electrical safety of the equipment.

[0048] Referring to Figures 1 and 2, in some embodiments, the waterproof and breathable component 3 includes a waterproof and breathable valve 31. The waterproof and breathable valve 31 includes a housing, a support layer, and a breathable membrane. The support layer secures the breathable membrane and seals it against the housing. The breathable membrane has a microporous structure, allowing gas molecules to pass through while blocking liquid water and particles. The waterproof and breathable valve 31 is small in size and has its own internal channel. As a connecting component between the housing 4 and the radiator 1, it combines waterproof and breathable properties with convenient installation and space saving.

[0049] In this embodiment, the radiator 1 is located on the outside of the housing 4. The housing 4 has vents that communicate with its internal space. The outer shell of the waterproof and breathable valve 31 is inserted into the through hole 121 and the vent, respectively, so that the first flow channel 111 and the internal space of the housing 4 are connected. In some other embodiments, the waterproof and breathable component 3 may also include a pipe and a hydrophobic and breathable membrane. The pipe is connected to the housing 4 and the sealing part 12, respectively, and the hydrophobic and breathable membrane is disposed in the through hole 121 and the vent, respectively. Alternatively, the pipe may be replaced by a one-way valve.

[0050] The dehumidification device also includes a fan 2, which is installed inside the housing 4 to draw the internal air of the housing 4 into the first flow channel 111. Specifically, the fan 2 is positioned opposite a waterproof and breathable component 3 corresponding to one of the through holes 121, and this through hole 121 corresponds to the inlet of the first flow channel 111. The fan 2 forcibly draws the air inside the housing 4 through the waterproof and breathable component 3 into the first flow channel 111 to accelerate airflow circulation and dehumidification.

[0051] Referring to Figures 1 and 2, in some embodiments, among the plurality of through holes 121, at least one through hole 121 is a first through hole 1211, and at least another through hole 121 is a second through hole 1212. The first through hole 1211 and the second through hole 1212 are respectively disposed at both ends of the first flow channel 111 along the first direction X. The first through hole 1211 is used to allow the medium inside the housing 4 to enter the first flow channel 111, and the second through hole 1212 is used to allow the medium in the first flow channel 111 to enter the internal space of the housing 4. The second flow channel 112 is disposed between the first through hole 1211 and the second through hole 1212.

[0052] The number of second flow channels 112 can be single or multiple. In this embodiment, the fan 2 is correspondingly arranged with the first through hole 1211. The air in the housing 4 is drawn into the first flow channel 111 through the first through hole 1211 by the fan 2. After being dehumidified, the air flows into the housing 4 through the second through hole 1212. Preferably, there are multiple second flow channels 112, which are arranged sequentially on the flow path of the medium in the first flow channel 111. During the process of the medium in the first flow channel 111 flowing from the inlet to the outlet, the condensate is automatically discharged from the second flow channel 112, maintaining the unidirectional circulation of gas between the first flow channel 111 and the internal space of the housing 4. This can reduce the flow resistance and simplify the flow channel structure.

[0053] Referring to Figures 1 and 6, the corresponding electrical equipment provided in this application embodiment includes a housing 4 and the aforementioned dehumidification device. The dehumidification device is configured to dehumidify the internal space of the housing 4 and restrict the backflow of gas from the external environment into the housing 4.

[0054] Referring to Figure 1, in some embodiments, the heat sink 1 is disposed on the outside of the housing 4. The heat sink 1 can be connected to the housing 4 or can be independent of the housing 4, depending on the space available for the electrical equipment. In this case, the heat sink 1 can serve as an external component to dehumidify different devices, making it widely applicable. In this embodiment, the electrical equipment is an IGBT module, and the heat sink 1 also serves as the heat dissipation component 13 for the IGBT module. Therefore, placing the first flow channel 111 and the second flow channel 112 on the heat sink 1 can simultaneously cool the IGBT module and dehumidify its interior, making full use of the cold source, saving the required space, and reducing the overall energy consumption of the equipment.

[0055] In some embodiments, the radiator 1 is disposed inside the housing 4 (not shown in the figure). The first flow channel 111 communicates with the internal space of the housing 4 through the through hole 121. The second port 1122 can be connected to the outside of the housing 4 through a pipe. Alternatively, a drain port communicating with the second port 1122 is opened at the bottom of the housing 4 to drain condensate. The radiator 1 preferably has a thermoelectric coupling structure, which is compact and requires little space, thus reducing interference with the internal components of the housing 4. When the through hole 121 is combined with the waterproof vent valve 31, the end of the waterproof vent valve 31 away from the sealing part 12 is directly located in the internal space of the housing 4, connecting the internal space of the housing 4 with the through hole 121. In order to fix the waterproof vent valve 31, the waterproof vent valve 31 can be connected to the housing 4 through a structural member.

[0056] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0057] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0058] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0059] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A dehumidification device, characterized in that, The dehumidification device, applied to electrical equipment, includes: a radiator (1) having a first flow channel (111) and a second flow channel (112), the first flow channel (111) being connected to the internal space of the enclosure (4) of the electrical equipment; the second flow channel (112) having a first port (1121) and a second port (1122), the first port (1121) being connected to the first flow channel (111), and the second port (1122) being connected to the external space of the enclosure (4), the second flow channel (112) being configured to limit the flow of medium entering the second flow channel (112) from the first port (1121) to the second port (1122).

2. The dehumidification device according to claim 1, characterized in that, The second flow channel (112) includes a main flow channel (1123) and a branch flow channel (1124). The first port (1121) and the second port (1122) are located in the main flow channel (1123). The branch flow channel (1124) has a third port (1125) and a fourth port (1126), which are respectively connected to the main flow channel (1123). When the medium flows from the first port (1121) to the second port (1122), The medium flows from the third port (1125) to the fourth port (1126), and the direction in which the medium flows out from the fourth port (1126) is the same as the direction of medium flow in the main channel (1123); when the medium flows from the second port (1122) to the first port (1121), the medium flows from the fourth port (1126) to the third port (1125), and the direction in which the medium flows out from the third port (1125) is opposite to the direction of medium flow in the main channel (1123).

3. The dehumidification device according to claim 2, characterized in that, The number of branch channels (1124) is provided and distributed on both sides of the main channel (1123). The multiple branch channels (1124) are arranged from the first port (1121) to the second port (1122).

4. The dehumidification device according to any one of claims 1 to 3, characterized in that, The first flow channel (111) extends along the first direction (X), and the number of second flow channels (112) is multiple, and the multiple second flow channels (112) are arranged at intervals along the first direction (X).

5. The dehumidification device according to claim 1, characterized in that, The radiator (1) includes a main body (11) and a sealing part (12). The first flow channel (111) and the second flow channel (112) are disposed on the main body (11). The sealing part (12) covers the first flow channel (111) and the second flow channel (112). The sealing part (12) has a plurality of through holes (121), which are respectively connected to the first flow channel (111) and the internal space of the housing (4).

6. The dehumidification device according to claim 5, characterized in that, The dehumidification device also includes a plurality of waterproof and breathable components (3), each of the waterproof and breathable components (3) corresponding to a through hole (121). One end of the waterproof and breathable component (3) is disposed in the through hole (121) and connected to the sealing part (12). The other end of the waterproof and breathable component (3) is used to connect to the box body (4) and respectively connect the internal space of the box body (4) and the through hole (121).

7. The dehumidification device according to claim 6, characterized in that, The waterproof and breathable component (3) includes a waterproof and breathable valve (31).

8. The dehumidification device according to claim 5, characterized in that, In the plurality of through holes (121), at least one of the through holes (121) is a first through hole (1211), and at least another through hole (121) is a second through hole (1212). The first through hole (1211) and the second through hole (1212) are respectively disposed at both ends of the first flow channel (111) along the first direction (X). The first through hole (1211) is used to allow the medium inside the housing (4) to enter the first flow channel (111) through it, and the second through hole (1212) is used to allow the medium in the first flow channel (111) to enter the internal space of the housing (4) through it. The second flow channel (112) is disposed between the first through hole (1211) and the second through hole (1212).

9. The dehumidification device according to claim 1, characterized in that, The dehumidification device also includes a fan (2) installed inside the housing (4), the fan (2) being used to draw the gas inside the housing (4) into the first flow channel (111).

10. An electrical device, characterized in that, Includes a housing (4) and a dehumidification device as described in any one of claims 1 to 9, the dehumidification device being configured to dehumidify the interior space of the housing (4).

11. The electrical equipment according to claim 10, characterized in that, The radiator (1) is located on the outside of the housing (4); or the radiator (1) is located inside the housing (4).

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