Shading apparatus and electrical device

Abstract

A shading apparatus and an electrical device. The shading apparatus is used for being arranged on a transformer (5). The shading apparatus comprises a shading plate (1), and the shading plate (1) is provided with ventilation windows (10). In a first direction (X), at least part of each ventilation window (10) is arranged opposite to a corresponding cooling fin group (51) of the transformer (5). The first direction (X) is the height direction of the transformer (5).

Description

Shading devices and electrical equipment

[0001] This disclosure claims priority to Chinese Patent Application No. 202520175928.7, filed on January 24, 2025, entitled "Sunshade Device and Electrical Equipment", and Chinese Patent Application No. 202520748225.9, filed on April 18, 2025, entitled "Sunshade Device and Electrical Equipment", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to a sunshade device and electrical equipment. Background Technology

[0003] A transformer is an electrical device used to transfer electrical energy between different voltage levels. It converts one voltage to another through the principle of electromagnetic induction to meet the power needs of different devices and systems.

[0004] In related technologies, transformers typically require shading structures to reduce direct sunlight exposure and prevent adverse effects on the transformer's working environment or materials. However, current shading structures can hinder the natural heat dissipation of the transformer's external heat sinks, leading to increased transformer temperature and affecting its normal operation. Summary of the Invention

[0005] The following is an overview of the detailed description of this disclosure. This overview is not intended to limit the scope of the claims.

[0006] In a first aspect, embodiments of this disclosure provide a sunshade device for installation on a transformer, the sunshade device comprising:

[0007] The shield is provided with a ventilation window, and at least a portion of the ventilation window is disposed opposite to the heat sink assembly of the transformer in a first direction, the first direction being the height direction of the transformer.

[0008] The sunshade device of this embodiment blocks most of the direct sunlight from the transformer through a shading plate. Since the shading plate does not obstruct the transformer's surroundings, the space around the transformer is freed up. Therefore, the heat sink can fully exchange heat with the surrounding air, and the ventilation windows allow for vertical airflow, increasing the rate of natural heat dissipation. This helps maintain the transformer within a stable operating temperature range, contributing to its normal operation. Furthermore, the ventilation windows reduce the weight of the shading plate, facilitating assembly.

[0009] In some embodiments, the number of ventilation windows is provided to be multiple, and the transformer includes multiple heat sink groups, with each ventilation window corresponding to at least one heat sink group, or each heat sink group corresponding to at least one ventilation window.

[0010] In some embodiments, the orthographic projection of the heat sink assembly onto the shield along the first direction falls into the ventilation window.

[0011] In some embodiments, the shading device further includes a plurality of blades, with two adjacent blades spaced apart, and the blades connected to the shading plate; the orthogonal projection of the plurality of blades onto the shading plate along the first direction falls at least partially into the ventilation window.

[0012] In some embodiments, the ventilation window extends along a second direction, and a plurality of the blades are spaced apart along the second direction, the second direction intersecting the first direction;

[0013] The orthographic projection of the transformer along the first direction onto the shield falls into the ventilation window.

[0014] In some embodiments, the ventilation window includes a plurality of ventilation units arranged along the second direction, with adjacent ventilation units separated by stiffeners, and each ventilation unit corresponding to the blade.

[0015] In some embodiments, the blade includes a first segment and a second segment, the first segment being connected to the baffle, the second segment being connected to the side of the first segment away from the baffle, and the second segment being arranged at an angle to the first direction.

[0016] In some embodiments, the blades are arranged at an angle to the first direction.

[0017] In some embodiments, a plurality of the blades are arranged in a row at intervals along a second direction, the blades extend along a third direction, the third direction intersects the first direction and the second direction, the sunshade device includes multiple rows of the blades, the multiple rows of the blades are arranged at intervals along the first direction, and the blades of adjacent rows are staggered along the second direction.

[0018] In some embodiments, at least a portion of the blade is located on the side of the shield away from the transformer, or at least a portion of the blade is located on the side of the shield facing the transformer.

[0019] In some embodiments, the ventilation window is shaped like an ellipse or a polygon.

[0020] In some embodiments, the shield is arranged at an angle to the first direction;

[0021] Alternatively, the shield extends along an arc-shaped trajectory;

[0022] Alternatively, the shield may include a first plate and a second plate connected to each other, with the first plate and the second plate arranged at an angle.

[0023] Secondly, this disclosure also provides a sunshade device for mounting on a transformer. The sunshade device includes a shading plate, the orthographic projection of which along a first direction can at least partially cover the transformer, and the orthographic projection is separate from or partially overlaps with the heat sink assembly of the transformer.

[0024] The shading device of this embodiment achieves shading of the main body of the transformer through the relative position between the shading plate and the transformer, and provides sufficient airflow space for the heat sink assembly to facilitate ventilation and heat dissipation, thereby maintaining the transformer within a stable operating temperature range and contributing to the normal operation of the transformer. Since the orthogonal projection of the shading plate is mainly used to cover the main body of the transformer, the size of the shading plate is reduced, which helps to save the space occupied by the shading plate.

[0025] In a corresponding third aspect, embodiments of this disclosure also provide an electrical device, including:

[0026] transformer;

[0027] The aforementioned sunshade device.

[0028] In some embodiments, the electrical equipment further includes a fixing structure that connects the sunshade device and the transformer respectively, so that the sunshade device is fixed above the transformer along a first direction;

[0029] Alternatively, the fixing structure may be disposed on at least one side of the transformer, and the sunshade device may be disposed on the fixing structure.

[0030] In some embodiments, the electrical equipment further includes a frame, the transformer is disposed within the frame, and the sunshade device is disposed on the frame.

[0031] In some embodiments, the electrical equipment further includes a bracket that connects the sunshade device and the frame, respectively.

[0032] In some embodiments, the frame is provided with a plurality of columns, and the sunshade device is connected to the columns.

[0033] In some embodiments, the frame includes a plurality of compartments arranged along a second direction, with adjacent compartments separated from each other, and the transformer disposed in one of the compartments;

[0034] At least the compartment corresponding to the transformer is provided with the sunshade device, or each compartment is provided with at least one sunshade device.

[0035] In some embodiments, the electrical equipment further includes a canopy disposed on the sunshade device, wherein the canopy and the sunshade device at least partially overlap in orthographic projection along a first direction.

[0036] The electrical equipment in this disclosure includes the sunshade device described above, and therefore can have all the technical features and beneficial effects of the sunshade device described above. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 is a schematic diagram of the structure of the sunshade device provided in an embodiment of this disclosure;

[0039] Figure 2 is a top view of the sunshade device provided in an embodiment of this disclosure;

[0040] Figure 3 is a schematic diagram of the structure of the blades and ventilation windows provided in an embodiment of this disclosure;

[0041] Figure 4 is a schematic diagram showing the relative positions of the blades and ventilation windows provided in an embodiment of this disclosure;

[0042] Figure 5 is a schematic diagram showing another relative position of the blades and ventilation windows provided in an embodiment of this disclosure;

[0043] Figure 6 is another structural schematic diagram of the ventilation window provided in an embodiment of this disclosure;

[0044] Figure 7 is a schematic diagram of the structure of the blades and ventilation unit provided in the embodiments of this disclosure;

[0045] Figure 8 is a schematic diagram showing the relative positions of the blades and the ventilation unit provided in an embodiment of this disclosure;

[0046] Figure 9 is a schematic diagram showing another relative position of the blades and ventilation unit provided in an embodiment of this disclosure;

[0047] Figure 10 is another structural schematic diagram of the blade provided in an embodiment of this disclosure;

[0048] Figure 11 is another structural schematic diagram of the blades and ventilation unit provided in an embodiment of this disclosure;

[0049] Figure 12 is another structural schematic diagram of the blade provided in an embodiment of this disclosure;

[0050] Figure 13 is another structural schematic diagram of the blade provided in an embodiment of this disclosure;

[0051] Figure 14 is a structural schematic diagram of the ventilation window provided in an embodiment of this disclosure;

[0052] Figure 15 is another structural schematic diagram of the ventilation window provided in an embodiment of this disclosure;

[0053] Figure 16 is another structural schematic diagram of the ventilation window provided in an embodiment of this disclosure;

[0054] Figure 17 is another structural schematic diagram of the ventilation window provided in an embodiment of this disclosure;

[0055] Figure 18 is another structural schematic diagram of the ventilation window provided in an embodiment of this disclosure;

[0056] Figure 19 is another structural schematic diagram of the ventilation window provided in an embodiment of this disclosure;

[0057] Figure 20 is a structural schematic diagram of the frame, columns and cover provided in an embodiment of this disclosure;

[0058] Figure 21 is another structural schematic diagram of the shield provided in an embodiment of this disclosure;

[0059] Figure 22 is another structural schematic diagram of the shield provided in an embodiment of this disclosure;

[0060] Figure 23 is a schematic diagram of the frame and shield provided in an embodiment of this disclosure;

[0061] Figure 24 is another structural schematic diagram of the frame and shield provided in an embodiment of this disclosure;

[0062] Figure 25 is another structural schematic diagram of the frame and shield provided in an embodiment of this disclosure;

[0063] Figure 26 is another structural schematic diagram of the frame and shield provided in an embodiment of this disclosure;

[0064] Figure 27 is another structural schematic diagram of the frame and shield provided in an embodiment of this disclosure;

[0065] Figure 28 is another structural schematic diagram of the shield provided in an embodiment of this disclosure;

[0066] Figure 29 is a schematic diagram of the structure of the cover plate and the bracket provided in the embodiment of this disclosure;

[0067] Figure 30 is another structural schematic diagram of the cover plate and bracket provided in an embodiment of this disclosure;

[0068] Figure 31 is a schematic diagram of the ceiling provided in an embodiment of this disclosure;

[0069] Reference numerals: 1. Sheath; 10. Ventilation window; 101. Ventilation unit; 102. Rib; 11. First plate; 12. Second plate; 2. Blade; 21. First section; 22. Second section; 3. Frame; 30. Cabin; 31. Partition; 4. Column; 5. Transformer; 51. Heat sink assembly; 6. Fixing structure; 7. Support; 8. Roof. Embodiments of the present invention

[0070] The technical solutions of the embodiments of this disclosure 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 disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0071] In the description of this disclosure, 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 disclosure and for 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 of this disclosure. In the description of this disclosure, "a plurality of" means two or more, and "at least one" can mean one, two, or more, unless otherwise explicitly specified. In the description of this disclosure, "orthographic projection" refers to "vertical orthographic projection," which is the graphic obtained on the projection plane by projecting parallel lines from an object along a specified projection direction onto a specified projection plane, where the projection plane is an abstract, infinitely extending reference plane.

[0072] It should also be noted that in the accompanying drawings of the embodiments of this disclosure, the arrow marked X represents the first direction X, the arrow marked Y represents the second direction Y, and the arrow marked Z represents the third direction Z. The first direction X, the second direction Y, and the third direction Z are introduced to more clearly illustrate the structure and relative positional relationship of each component in the sunshade device. In practical applications, the first direction X, the second direction Y, and the third direction Z may change depending on the placement of the sunshade device.

[0073] In related technologies, the sunshade structure above the transformer is usually a full-coverage canopy. A full-coverage canopy means that in addition to completely covering the top of the transformer, the canopy also fully or partially covers the outer perimeter of the transformer. For oil-fired transformers, since the canopy is close to the transformer's heat sink, it will affect the natural heat dissipation of the heat sink, causing the transformer temperature to rise and affecting the normal operation of the transformer.

[0074] Referring to Figures 1 and 2, the sunshade device of this embodiment is used to install on the transformer 5. The sunshade device includes a shading plate 1, which has a ventilation window 10. The ventilation window 10 extends through the shading plate 1 along its thickness direction. The shading plate 1 has two large surfaces with the largest surface area, and the thickness direction is perpendicular to the two large surfaces. In the first direction X, at least a portion of the ventilation window 10 is positioned opposite to the heat sink assembly 51 of the transformer 5, that is, the heat sink assembly 51 has an orthographic projection on the shading plate 1 along the first direction X, and at least a portion of this orthographic projection falls within the ventilation window 10. The first direction X corresponds to the height direction of the transformer 5. The orthographic projection of the heat sink assembly 51 refers to the image obtained on the plane of the shading plate 1 by projecting a parallel line from the heat sink assembly 51 along the first direction X onto the plane of the shading plate 1.

[0075] The heat sink assembly 51 includes a plurality of spaced-apart fins connected to the housing of the transformer 5 and extending along a first direction X.

[0076] The shield 1 is located above the transformer 5. The shield 1 has a plate-like structure. The orthographic projection of the shield 1 along the first direction X can cover the transformer 5 to ensure the shading effect on the transformer 5. At the same time, the orthographic projections of the shield 1 and the transformer 5 along the second direction Y on the same plane are spaced apart, that is, the orthographic projection boundary of the shield 1 and the orthographic projection boundary of the transformer 5 are separated. The second direction Y intersects with the first direction X. This ensures that the space of the heat sink assembly 51 on the outer periphery of the transformer 5 is not blocked by the shield 1. In the vertical direction, the heat sink assembly 51 can also achieve airflow through the ventilation window 10. This provides the heat sink assembly 51 with sufficient heat exchange space, which can accelerate the natural heat dissipation speed of the heat sink assembly 51, reduce the overheating of the transformer 5, and maintain the normal operation of the transformer 5. In this embodiment, the vertical direction is parallel to the first direction X, which mainly refers to the fact that the hot air around the heat sink assembly 51 can flow from bottom to top and flow through the ventilation window 10.

[0077] Referring to Figures 1 and 2, in some embodiments, the number of ventilation windows 10 is multiple. The transformer 5 includes multiple heat sink groups 51, and each ventilation window 10 corresponds to at least one heat sink group 51. That is, the ventilation window 10 and the heat sink group 51 can be in a one-to-one correspondence. At least a portion of each ventilation window 10 is arranged opposite to the heat sink group 51 in the first direction X. "Relative arrangement" means that in the first direction X, the ventilation window 10 can face directly towards the heat sink group 51. Alternatively, each ventilation window 10 can correspond to multiple heat sink groups 51. In the aforementioned cases, the ventilation window 10 extends along the arrangement direction of the multiple heat sink groups 51 to ensure their relative relationship in the first direction X. For example, two heat sink groups 51 are located on two adjacent outer surfaces of the transformer 5 casing, and the two heat sink groups 51 are roughly L-shaped. In this case, the ventilation window 10 extends along the L-shaped trajectory. The multiple ventilation windows 10 cooperate with the multiple heat sink groups 51 to accelerate the heat exchange with the external environment, thereby improving the heat dissipation effect on the transformer 5.

[0078] Referring to Figures 1 and 2, in some embodiments, the number of ventilation windows 10 is multiple. The transformer 5 includes multiple heat sink groups 51, and each heat sink group 51 corresponds to at least one ventilation window 10. That is, there can be a one-to-one correspondence between ventilation windows 10 and heat sink groups 51. At least a portion of each ventilation window 10 is arranged opposite to the heat sink group 51 in the first direction X. "Relatively arranged" means that in the first direction X, the ventilation window 10 can face directly towards the heat sink group 51. Alternatively, each heat sink group 51 can correspond to multiple ventilation windows 10. In this case, multiple ventilation windows 10 are used to meet the size or shape requirements of the heat sink group 51. The multiple ventilation windows 10 are spaced apart, which relatively increases the solid portion of the shield 1 and ensures the strength of the shield 1.

[0079] Referring to Figures 1 and 2, in some embodiments, the orthographic projection of the heat sink assembly 51 along the first direction X onto the baffle 1 falls within the ventilation window 10. That is, along the first direction X, the heat sink assembly 51 and the baffle 1 have a first orthographic projection and a second orthographic projection respectively on the same plane, and the inner contour of the ventilation window 10 in the second orthographic projection is distributed around the outer periphery of the first orthographic projection. Each part of the heat sink assembly 51 can allow vertical airflow through the ventilation window 10, ensuring uniform airflow between the fins and helping to maintain the uniformity of heat distribution in the heat sink assembly 51.

[0080] Referring to Figures 3, 4, and 5, in some embodiments, the sunshade device further includes multiple blades 2, which are disposed opposite to the ventilation window 10, with adjacent blades 2 spaced apart to allow air to circulate through the gaps between them. The blades 2 are connected to a shield 1, and the multiple blades 2 have orthographic projections on the shield 1 along a first direction X, with at least a portion of these projections falling within the ventilation window 10. In other words, the orthographic projections of the multiple blades 2 can partially or completely cover the ventilation window 10. The blades 2 block direct sunlight from reaching the heat sink assembly 51, reducing the impact of heat radiation on the heat sink assembly 51 and thus maintaining the high heat exchange efficiency of the heat sink assembly 51.

[0081] The blade 2 and the ventilation window 10 can be arranged opposite each other in the following ways: part of the blade 2 is located inside the ventilation window 10, or the entire blade 2 is located inside the ventilation window 10, or the blade 2 is located on the outer periphery of the ventilation window 10.

[0082] In this embodiment, the multiple blades 2 are arranged at intervals along the extension direction of the ventilation window 10. For example, the ventilation window 10 has a long side and a wide side, and the multiple blades 2 are arranged at intervals along the long side of the ventilation window 10. In some other embodiments, when the ventilation window 10 extends in an L-shape, the arrangement trajectory of the multiple blades 2 can also be L-shaped. Alternatively, the multiple blades 2 can also be arranged perpendicular to the extension direction of the ventilation window 10. For example, the ventilation window 10 has a long side and a wide side, and the multiple blades 2 are arranged at intervals along the wide side of the ventilation window 10. In this case, each blade 2 can extend along the long side of the ventilation window 10. Alternatively, the multiple blades 2 can be divided into multiple groups, and the multiple groups of blades 2 are arranged sequentially along the long side of the ventilation window 10, with the multiple blades 2 in each group arranged at intervals along the width direction of the ventilation window 10.

[0083] Referring to Figure 6, in some embodiments, the ventilation window 10 extends along the second direction Y, and multiple blades 2 are arranged at intervals along the second direction Y. The second direction Y intersects with the first direction X. The orthographic projection of the transformer 5 along the first direction X onto the shield 1 falls into the ventilation window 10. On the plane perpendicular to the first direction X, the cross-sectional area of ​​the ventilation window 10 is larger than the maximum cross-sectional area of ​​the transformer 5, so that the heat sink assembly 51 is positioned opposite to the ventilation window 10 in the first direction X, ensuring sufficient airflow in the vertical direction of the heat sink assembly 51 and balancing the needs of shading and ventilation. The cross-sectional area of ​​the ventilation window 10 can be the area of ​​the bright area formed on the plane perpendicular to the first direction X when parallel light shines on the shield 1 along the first direction X, allowing light to pass through the ventilation window 10. The maximum cross-sectional area of ​​the transformer 5 is the area of ​​the orthographic projection formed by the transformer 5 along the first direction X. In other words, the ventilation window 10 can completely enclose the orthographic projection of the transformer 5, so that the heat sink assembly 51 faces the ventilation window 10 directly in the first direction X.

[0084] Referring to Figures 7, 8, and 9, in some embodiments, the ventilation window 10 includes multiple ventilation units 101. These ventilation units 101 are arranged along the second direction Y, with adjacent ventilation units 101 separated by stiffeners 102. Each ventilation unit 101 is a hollow space between the stiffeners 102. The stiffeners 102 are connected to the baffle 1, and each ventilation unit 101 corresponds to a blade 2 connected to the stiffener 102, so that the blade 2 is connected to the baffle 1 via the stiffener 102. Because the ventilation units 101 are separated by the stiffeners 102, each ventilation unit 101 is relatively independent. Therefore, among the multiple ventilation units 101, some ventilation units 101 have a correspondence with the heat sink assembly 51 in the first direction X. In other embodiments, the blade 2 may also be partially located within the ventilation unit 101, or the blade 2 may be entirely located within the ventilation unit 101.

[0085] The orthographic projection of blade 2 along the first direction X onto the shield 1 can cover part or all of the ventilation unit 101 corresponding to blade 2. Therefore, air can circulate freely through each ventilation unit 101, while direct sunlight is partially or completely blocked by blade 2, reducing the direct impact on the heat sink assembly 51 on the transformer 5. In addition, stiffener 102 increases the strength and stability of shield 1, reducing the possibility of stiffener 102 deformation.

[0086] Referring to Figure 7, in some embodiments, the blade 2 includes a first segment 21 and a second segment 22. The first segment 21 is connected to the shield 1, and the second segment 22 is connected to the side of the first segment 21 away from the shield 1. The second segment 22 is set at an angle to the first direction X, such that the second segment 22 is inclined to the first segment 21. Specifically, the first segment 21 is a straight segment and extends along the first direction X. The first segment 21 is connected to the stiffener 102, and the stiffener 102 achieves an indirect connection with the shield 1. The vertical distance between the second segment 22 and the shield 1 in the first direction X increases in the direction away from the shield 1. The shading effect of the blade 2 is mainly achieved by the second segment 22.

[0087] Referring to Figure 4, in some other embodiments, the first segment 21 may also be directly connected to the shield 1 and separated from the ventilation window 10 or the ventilation unit 101.

[0088] Please refer to Figures 3 and 9 together. Alternatively, the first segment 21 can also be partially set inside the ventilation window 10 or ventilation unit 101 and connected to the shield 1.

[0089] Please refer to Figures 5 and 8 together. Alternatively, the first segment 21 can also be entirely set inside the ventilation window 10 or ventilation unit 101 and connected to the shield 1.

[0090] In addition, the blade 2 can also be divided into other different numbers of segments. By combining multiple segments, the shape of the blade 2 can be diversified to meet the needs of guiding airflow and the needs of different shading ranges of the ventilation window 10.

[0091] Referring to Figures 10 and 11, in some embodiments, the blade 2 is arranged at an angle to the first direction X, that is, the blade 2 is inclined to the baffle 1. The blade 2 can be directly connected to the baffle 1, or it can be connected to the stiffener 102, achieving an indirect connection with the baffle 1 through the stiffener 102. Similarly, the blade 2 can be partially located inside the ventilation window 10 or the ventilation unit 101, or it can be entirely located inside the ventilation window 10 or the ventilation unit 101, or it can be entirely located outside the ventilation window 10 or the ventilation unit 101. The blade 2 has a simpler structure and can directly guide the airflow to maintain a relatively stable and uniform ventilation effect.

[0092] Referring to Figure 12, in some embodiments, multiple blades 2 are arranged in a row at intervals along the second direction Y, and the blades 2 extend along a third direction Z, intersecting the first direction X and the second direction Y. The shading device includes multiple rows of blades 2, which are arranged at intervals along the first direction X, and adjacent rows of blades 2 are staggered along the second direction Y. That is, in two adjacent rows of blades 2, one row of blades 2 forms multiple first orthographic projections at intervals along the second direction Y on the projection plane along the first direction X, and the other row of blades 2 forms multiple second orthographic projections at intervals along the second direction Y on the same projection plane along the first direction X. The first and second orthographic projections are arranged alternately. In this embodiment, the first orthographic projections are connected to the second orthographic projections on both sides. By covering the ventilation window 10 with multiple rows of blades 2, natural airflow can be achieved through the gaps between the blades 2, and a shading effect can also be achieved. In addition, some falling foreign objects can be supported and blocked by the blades 2, preventing foreign objects from falling directly onto the transformer 5.

[0093] In other embodiments, in each row of blades 2, the spacing between two adjacent blades 2 can be greater than the length of the blade 2 along the second direction Y, or the spacing between two adjacent blades 2 can be less than the length of the blade 2 along the second direction Y. Correspondingly, adjacent first orthographic projections and second orthographic projections are arranged alternately or partially overlap.

[0094] Referring to Figures 10, 11, and 13, in some embodiments, at least a portion of the blade 2 is located on the side of the shield 1 away from the transformer 5, or at least a portion of the blade 2 is located on the side of the shield 1 facing the transformer 5. Specifically, the portion of the blade 2 located outside the shield 1 is inclined, that is, the portion of the blade 2 located outside the shield 1 forms an angle with the first direction X. Furthermore, the blade 2 can be partially inclined or entirely inclined, and the inclination direction can be either inclined upwards or inclined downwards along a direction away from the shield 1, so that the inclined portion is located above or below the shield 1. Different inclination directions of the blade 2 can bring different airflow effects and different shading areas, meeting the usage requirements of the transformer 5 under different operating conditions.

[0095] Referring to Figures 14 to 19, in some embodiments, the ventilation window 10 is shaped like an ellipse or a polygon. When the ventilation window 10 is polygonal, it can be rectangular, parallelogram, trapezoidal, pentagonal, or hexagonal. To improve the heat exchange efficiency of the heat sink assembly 51, the maximum length of each shape of ventilation window 10 can be no less than the maximum length of the corresponding heat sink assembly 51, and the maximum width of each shape of ventilation window 10 can be no less than the maximum width of the corresponding heat sink assembly 51. Different shapes of the ventilation window 10 can affect airflow, sunlight incidence angle, effective window area, etc., helping to meet different practical use and design requirements.

[0096] Referring to Figure 20, in some embodiments, the shield 1 is set at an angle to the first direction X, that is, the shield 1 is in an inclined state, which helps rainwater and other forms of precipitation to flow away quickly and prevents moisture from accumulating above the transformer 5.

[0097] Referring to Figure 21, in some embodiments, the shield 1 extends along an arc-shaped trajectory, making the shield 1 as a whole arched. On the one hand, it can block sunlight from different angles, and on the other hand, it can better disperse and withstand external pressure, protecting the transformer 5.

[0098] Referring to Figure 22, in some embodiments, the shield 1 includes a first plate 11 and a second plate 12 connected to each other, with the first plate 11 and the second plate 12 arranged at an angle. In this case, the shield 1 is generally herringbone shaped, which has a simple structure, is easy to process, and can also accelerate the falling of rainwater.

[0099] Referring to Figures 28 to 30, a sunshade device is provided in this embodiment for mounting on a transformer 5. The sunshade device includes a shading plate 1. The orthographic projection of the shading plate 1 along a first direction X can at least partially cover the transformer 5, and the orthographic projection is separate from or partially overlaps with the heat sink assembly 51 of the transformer 5. The first direction X corresponds to the height direction of the transformer 5.

[0100] The transformer 5 includes a main body and a heat sink assembly 51. When the transformer 5 is an oil-immersed transformer, the main body includes windings and a housing, with insulating oil stored inside the housing, and the windings immersed in the insulating oil. When the transformer 5 is a dry-type transformer, the main body includes windings, a housing, and a heat dissipation structure disposed within the housing. A shielding plate 1 is arranged at intervals along a first direction X with the transformer 5. In the first direction X, the downward orthogonal projection of the shielding plate 1 can partially or completely cover the main body to provide shade and reduce the impact of direct sunlight on the transformer 5. The downward orthogonal projection of the shielding plate 1 does not overlap with or partially overlaps with the heat sink assembly 51. In the case of partial overlap, the overlapping area is much smaller than the area of ​​the heat sink assembly 51's orthogonal projection along the first direction X. In this embodiment, the orthogonal projection of the shielding plate 1 does not overlap with the heat sink assembly 51, providing sufficient heat exchange space for the heat sink assembly 51 to improve its heat dissipation performance.

[0101] Since the shield 1 partially blocks the transformer 5, the heat sink assembly 51 is exposed. The surrounding area of ​​the shield 1 can be used as a window area. This window area can be an open space or a semi-enclosed space enclosed by the other components.

[0102] Referring to Figures 23 to 27, the electrical device provided in this embodiment includes a transformer 5 and a sunshade device as described above. The sunshade device is disposed above the transformer 5, serving two purposes: firstly, to block most of the direct sunlight from reaching the transformer 5; and secondly, to enable ventilation and heat dissipation of the heat sink assembly 51 of the transformer 5 in all directions and vertically. This electrical device can possess all the technical features and beneficial effects of the aforementioned sunshade device, which will not be elaborated upon here.

[0103] Referring to Figure 28, the electrical equipment also includes a fixing structure 6, which connects the sunshade device and the transformer 5 respectively, so that the sunshade device is fixed above the transformer 5 along the first direction X. Alternatively, the fixing structure 6 is provided on at least one side of the transformer 5, and the sunshade device is connected to the fixing structure 6. In this case, there can be one or more fixing structures 6. The fixing structure 6 supports or is fixed to the periphery of the transformer 5, and the shading plate 1 is connected to the top of the fixing structure 6 to form a sunshade for the transformer 5. On the one hand, the fixing structure 6 can separate the shading plate 1 from the main body, so that the structure on the shading plate 1 does not interfere with each other, so that the sunshade device only blocks the main body of the transformer 5, and the space between the shading plate 1 and the main body allows the heat sink assembly 51 to be placed in the external airflow, simplifying the structure of the sunshade device. On the other hand, the fixing structure 6 can be of a variety of designs, so that the sunshade device can be designed according to different structures and different spaces where the transformer 5 is located, so that the heat sink assembly 51 has sufficient ventilation area. In addition, the shading plate 1 is connected to the main body through the fixing structure 6, so that when the shading plate 1 is adjusted, it can avoid the transformer 5, reducing interference to the transformer 5.

[0104] The fixing structure 6 can be a rod, plate, stamped part, sheet metal part, or bent part, and it can be fixed to the transformer 5 and the shield 1 by means of screws, bolts, welding, snap-fit ​​connection, etc. For example, the fixing structure 6 is a rod, which is set on the housing of the transformer 5 and extends upward along the first direction X. The shield 1 is connected to the top of the rod, thereby forming a certain flow space between the shield 1 and the transformer 5 to allow airflow to carry away the heat of the heat sink assembly 51.

[0105] Referring to Figure 28, for example, the fixing structure 6 is a rod, and the number of rods is set to multiple. These rods are arranged around the outer periphery of the transformer 5, avoiding each other from the heat sink assembly 51. The rods extend upwards along the first direction X and pass over the transformer 5. The shield 1 is connected to the top of the multiple rods. Alternatively, there may be a single rod extending upwards along the first direction X, with the shield 1 connected to the top side of the rod. In this case, the shield 1 and the rod form an L-shaped structure, similar to an L-shaped bending structure. Therefore, an L-shaped bending member can be used to simultaneously avoid the transformer and provide sunshade to the main body of the transformer. In this case, part of the bending member is used for fixing, and the other part can be used to set up ventilation windows 10, or simply to cover the main body of the transformer. Besides this, the bending member can also have other shapes, which can be determined based on factors such as the size of the transformer, the size of the space, and the distribution of the surrounding structures.

[0106] Referring to Figures 23 to 27, in some embodiments, the electrical equipment also includes a frame 3, with the transformer 5 housed within the frame 3 and a sunshade device mounted on the frame 3. The frame 3 is mainly assembled from sheet metal parts or profiles into a three-dimensional structure. The frame 3 serves to protect the transformer 5, reducing the possibility of the transformer 5 being squeezed. At the same time, the frame 3 structure also forms an opening area for ventilation and heat dissipation of the heat sink assembly 51.

[0107] In some other embodiments, an intermediate partition layer may be provided between the shield 1 and the transformer 5. The intermediate partition layer may be a plate-like structure at the top of the frame 3. The intermediate partition layer has an opening structure at the ventilation window 10 position on the corresponding shield 1. The opening structure is connected to the ventilation window 10 so that the heat generated by the transformer 5 can flow from the top.

[0108] Referring to Figures 29 and 30, in some embodiments, the electrical equipment further includes a bracket 7, which connects the sunshade device and the frame 3. At least one side of the sunshade device forms a window area with the top edge of the frame 3 to allow airflow. The bracket 7 and the sunshade device are arranged along a first direction X such that their orthographic projections in the first direction X overlap, and this overlapping area mainly covers the main body of the transformer 5.

[0109] Referring to Figure 29, exemplarily, the bracket 7 includes two spaced-apart crossbars that overlap the top of the frame 3, with a cover plate 1 connected to the two crossbars. The outer periphery of the cover plate 1 and the top edge of the frame 3 form a window area, and the crossbars are also located within this window area. The heat sink assembly 51 is disposed opposite to the window area, that is, in the first direction X, the heat sink assembly 51 faces the window area, or in other words, the orthogonal projection of the heat sink assembly 51 along the first direction X can fall on the window area.

[0110] Referring to Figure 30, for example, the bracket 7 includes two spaced-apart horizontal bars that overlap the top of the frame 3. Each horizontal bar is connected to a cover plate 1 via a support rod, allowing the cover plate 1 to be suspended from the horizontal bars. The outer periphery of the cover plate 1 and the top edge of the frame 3 form a window area, and the horizontal bars are located within this window area. The heat sink assembly 51 is positioned opposite to the window area.

[0111] The position of the bracket 7 can be adjusted according to the position of the heat sink assembly 51 so that the bracket 7 avoids the heat sink assembly 51 as much as possible. For example, when multiple heat sink assemblies 51 are arranged at intervals along the third direction Z, the bracket 7 can be arranged along the second direction Y; when multiple heat sink assemblies 51 are arranged at intervals along the second direction Y, the bracket 7 can be arranged along the third direction Z. In this way, the orthogonal projection of the bracket 7 along the first direction X can fall between the multiple spaced heat sink assemblies 51 in the aforementioned cases, thus achieving misalignment with the heat sink assembly 51. By fixing the sunshade device with the bracket 7, the sunshade device can be directly positioned corresponding to the core winding of the transformer 5, eliminating the need for a large area of ​​sunshade device to block the core winding area of ​​the transformer 5. This allows the heat sink assembly 51 to have sufficient airflow space, simplifies the structure of the sunshade device, and saves space occupied by the sunshade device.

[0112] In some other embodiments, the sunshade device can also be directly mounted on the frame 3, as long as the orthographic projection of the sunshade device in the first direction X does not overlap with the heat sink assembly 51.

[0113] Referring to Figures 20 and 22, in some embodiments, the frame 3 is provided with multiple columns 4, and the sunshade device is connected to the columns 4. Specifically, the columns 4 extend along the first direction X, and the shading plate 1 is connected to the end of the column 4 away from the frame 3. The columns 4 increase the distance between the shading plate 1 and the transformer 5, thereby releasing the space between the shading plate 1 and the transformer 5 and reducing the accumulation of heat in the heat sink assembly 51 in the limited space.

[0114] Referring to Figures 23 to 27, in some embodiments, the frame 3 includes multiple compartments 30 arranged along the second direction Y, with adjacent compartments 30 separated by partitions 31 connected to the frame 3. The transformer 5 is housed in one of the compartments 30, while the remaining compartments 30 can be used to house inverters, distribution cabinets, ring main units, and other devices, facilitating increased integration of electrical equipment. At least one compartment 30 corresponding to the transformer 5 is equipped with a sunshade device, or each compartment 30 corresponds to at least one sunshade device. At least one side of each compartment 30 along the third direction Z has a window structure communicating with the interior of the compartment 30. The heat sink assembly 51 of the transformer 5 faces the window structure, further enhancing airflow between the transformer 5 and the outside environment and improving heat dissipation.

[0115] Please refer to Figure 23. For example, there are three compartments 30. The transformer 5 is located in the middle compartment 30. A cover plate 1 is provided on the compartment 30 where the transformer 5 is located. Two ventilation windows 10 are provided on the cover plate 1. The ventilation windows 10 correspond to the heat sink assembly 51.

[0116] Please refer to Figures 24 and 25 together. Alternatively, each compartment 30 is equipped with a cover plate 1, and the cover plate 1 has the same structure, that is, the cover plate 1 has two ventilation windows 10 or the cover plate 1 has blades 2.

[0117] Please refer to Figure 26. Alternatively, a shield 1 is provided on the compartment 30 where the transformer 5 is located, and the shield 1 has blades 2.

[0118] Please refer to Figure 27. Alternatively, each compartment 30 is equipped with a shield 1. The shield 1 corresponding to the transformer 5 has two spaced ventilation windows 10, which correspond to the heat sink assembly 51. The other two shields 1 have blade structures 2. In the above example, the blades 2 on the shield 1 can be a structure combined with the ventilation windows 10 or a scheme combined with the ventilation unit 101, which can be selected according to actual needs. Similarly, the structure and arrangement order of the shields 1 on each compartment 30 can be freely combined, and the type of electrical devices placed in each compartment 30 and the arrangement order of the devices can be freely allocated.

[0119] Referring to Figure 31, in some embodiments, the electrical equipment further includes a canopy 8, which is disposed on the sunshade device. The canopy 8 and the sunshade device at least partially overlap in orthographic projection along a first direction X. The canopy 8 can be connected to the sunshade device by a vertical rod. The canopy 8 can be a herringbone structure or a flat plate structure. In the case of a flat plate structure, the canopy 8 can be horizontally or inclined.

[0120] The space between the canopy 8 and the shading device allows airflow to pass through the window area, increasing the overall heat dissipation space between the transformer 5 and the external environment. The orthographic projection of the canopy 8 along the first direction X can completely cover the transformer 5. At this time, airflow can pass through the ventilation window 10 on the shading plate 1 or the window area on the outer periphery of the shading plate 1. The canopy 8 blocks sunlight from shining on the heat sink assembly 51, reducing the impact of solar radiation on the heat sink assembly 51.

[0121] 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 of other embodiments.

[0122] The sunshade device and electrical equipment provided in the embodiments of this disclosure have been described in detail above, and specific examples have been used to illustrate the principles and implementation methods of this disclosure. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this disclosure. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A sunshade device for installation on a transformer (5), the sunshade device comprising: The shield (1) is provided with a ventilation window (10). In a first direction (X), at least a portion of the ventilation window (10) is disposed opposite to the heat sink assembly (51) of the transformer (5). The first direction (X) is the height direction of the transformer (5).

2. The sunshade device according to claim 1, wherein, The number of ventilation windows (10) is set to a plurality of, and the transformer (5) includes a plurality of heat sink groups (51). Each ventilation window (10) corresponds to at least one heat sink group (51), or each heat sink group (51) corresponds to at least one ventilation window (10).

3. The sunshade device according to claim 1, wherein, The orthographic projection of the heat sink assembly (51) along the first direction (X) onto the shield (1) falls into the ventilation window (10).

4. The sunshade device according to claim 1, wherein, The shading device also includes a plurality of blades (2), with two adjacent blades (2) spaced apart, and the blades (2) are connected to the shading plate (1); the orthographic projection of the plurality of blades (2) on the shading plate (1) along the first direction (X) falls at least partially into the ventilation window (10).

5. The sunshade device according to claim 4, wherein, The ventilation window (10) extends along the second direction (Y), and the plurality of blades (2) are arranged at intervals along the second direction (Y), the second direction (Y) intersecting the first direction (X); The orthographic projection of the transformer (5) along the first direction (X) onto the shield (1) falls into the ventilation window (10).

6. The sunshade device according to claim 4, wherein, The ventilation window (10) includes a plurality of ventilation units (101), which are arranged along a second direction (Y) and are separated by stiffeners (102) between adjacent ventilation units (101). Each ventilation unit (101) corresponds to the blade (2).

7. The sunshade device according to any one of claims 4 to 6, wherein, The blade (2) includes a first segment (21) and a second segment (22). The first segment (21) is connected to the baffle (1), and the second segment (22) is connected to the side of the first segment (21) away from the baffle (1). The second segment (22) is set at an angle to the first direction (X).

8. The sunshade device according to any one of claims 4 to 6, wherein, The blade (2) is set at an angle to the first direction (X).

9. The sunshade device according to claim 4, wherein, Multiple blades (2) are arranged in a row at intervals along a second direction (Y), and the blades (2) extend along a third direction (Z). The third direction (Z) intersects the first direction (X) and the second direction (Y). The sunshade device includes multiple rows of blades (2), which are arranged at intervals along the first direction (X), and the blades (2) in adjacent rows are staggered along the second direction (Y).

10. The sunshade device according to claim 4, wherein, At least a portion of the blade (2) is located on the side of the shield (1) away from the transformer (5), or at least a portion of the blade (2) is located on the side of the shield (1) facing the transformer (5).

11. The sunshade device according to claim 1, wherein, The ventilation window (10) is either elliptical or polygonal in shape.

12. The sunshade device according to claim 1, wherein, The shield (1) is set at an angle to the first direction (X); Alternatively, the shield (1) extends along an arc-shaped trajectory; Alternatively, the shield (1) may include a first plate (11) and a second plate (12) connected to each other, wherein the first plate (11) and the second plate (12) are arranged at an angle.

13. A sunshade device for mounting on a transformer (5), the sunshade device comprising a shading plate (1) whose orthographic projection along a first direction (X) can at least partially cover the transformer (5), and the orthographic projection is separate from or partially overlaps with the heat sink assembly (51) of the transformer (5).

14. An electrical device comprising: Transformer (5); The sunshade device according to any one of claims 1 to 13.

15. The electrical equipment according to claim 14, wherein, The electrical equipment also includes a fixing structure (6), which connects the sunshade device and the transformer (5) respectively, so that the sunshade device is fixed above the transformer (5) along the first direction (X); Alternatively, the fixing structure (6) may be disposed on at least one side of the transformer (5), and the sunshade device may be disposed on the fixing structure (6).

16. The electrical equipment according to claim 14, wherein, The electrical equipment also includes a frame (3), the transformer (5) is disposed within the frame (3), and the sunshade device is disposed on the frame (3).

17. The electrical equipment according to claim 16, wherein, The electrical equipment also includes a bracket (7), which connects the sunshade device and the frame (3) respectively.

18. The electrical equipment according to claim 16, wherein, The frame (3) is provided with multiple columns (4), and the sunshade device is connected to the columns (4).

19. The electrical equipment according to claim 16 or 18, wherein, The frame (3) includes multiple compartments (30) arranged along a second direction (Y), with adjacent compartments (30) separated from each other, and the transformer (5) disposed in one of the compartments (30); At least the compartment (30) corresponding to the transformer (5) is provided with the sunshade device, or each compartment (30) is provided with at least one sunshade device.

20. The electrical equipment according to claim 14, wherein, The electrical equipment also includes a canopy (8) disposed on the sunshade device, wherein the canopy (8) and the sunshade device at least partially overlap in orthographic projection along a first direction (X).

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