Electric power automation equipment cooling structure and cooling method

Abstract

The invention discloses a cooling structure and method for electric power automation equipment, belongs to the field of cooling of electric power equipment, and solves the problem that a large amount of hot air left at the top end of the interior of existing electric power automation equipment cannot be exhausted. By arranging the cooling mechanism and the discharging mechanism, heat of internal parts of the electric power automation equipment can be removed and discharged in a multi-angle and large-range mode, and when a heat dissipation fan rotates to the top end by an angle, a sealing cover plate is opened, so that gas with heat and remaining at the top end in the equipment can be directly discharged from a heat dissipation groove in the top end, and the heat dissipation efficiency is improved. And in the process that hot air is exhausted by the top-end heat dissipation groove, external impurities cannot penetrate through the top-end heat dissipation groove to enter the interior of the equipment, and after the subsequent angle rotation of the heat dissipation fan, the sealing cover plate can close the top-end heat dissipation groove, so that the stability of the equipment during operation is ensured, heat in the equipment can be rapidly exhausted, and the heat exhaust path is shortened.

Description

Technical Field

[0001] The invention belongs to the field of cooling of electric power equipment, and in particular relates to a cooling structure and a cooling method of electric power automation equipment. Background Art

[0002] Power equipment mainly includes two categories: power generation equipment and power supply equipment. Power generation equipment mainly includes power station boilers, steam turbines, gas turbines, water turbines, generators, transformers, etc. Power supply equipment mainly includes transmission lines of various voltage levels, mutual inductors, contactors, etc. With the advancement of current technology, power equipment can operate automatically and is very advanced. Current power automation equipment is equipped with cooling devices to control the temperature of internal components of the equipment and ensure the stability of the equipment during operation.

[0003] Although current power automation equipment can stably control the temperature of circuit components through internal cooling devices, a large amount of heat still remains inside the power equipment box during actual use. Most of the heat dissipation vents on the box itself are opened on both sides, and the hot air floats on the cold air, resulting in the inability of the hot gas to be quickly discharged from the heat dissipation vents, which affects the cooling effect of the equipment itself. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In order to solve the problems raised in the above background technology, the present invention adopts the following technical solutions.

[0006] A cooling structure for electric automation equipment includes a cooling mechanism installed inside the electric automation equipment, wherein the electric automation equipment consists of an electric equipment main body, a closing plate and a main machine, the main machine is installed inside the electric equipment main body, the closing plate is installed at the side opening of the electric equipment main body, the cooling mechanism is symmetrically installed at the top corners inside the electric equipment main body, the cooling mechanism includes a heat dissipation fan, a support frame and a rotating seat, the support frame is symmetrically installed on the inner wall of the electric equipment main body, the rotating seat is rotatably installed between the support frames, the heat dissipation fan is installed on the side of the rotating seat, and the operation of the heat dissipation fan is used to remove heat from the electric equipment main body.

[0007] As a preferred technical solution of the present invention, the cooling mechanism also includes a transmission assembly and a drive motor. The transmission assembly is installed on the side of the support frame, the drive motor is installed inside the main body of the power equipment, and the output end of the drive motor is connected to the end of the transmission assembly.

[0008] As a preferred technical solution of the present invention, the transmission assembly includes a side bracket, a worm wheel, a worm and a driving connecting rod. The side bracket is fixedly installed on the inner wall of the main body of the power equipment on the side of the support frame, the driving connecting rod is installed at the output end of the driving motor, the worm is installed on the outside of the driving connecting rod, the worm wheel is meshingly installed at the bottom end of the worm, and the worm wheel is connected to the rotating seat through a rotating rod.

[0009] As a preferred technical solution of the present invention, the cooling structure also includes a discharge mechanism, which includes a closed cover and a top heat dissipation groove. The top of the power equipment body is symmetrically provided with a top heat dissipation groove for discharging the internal heat of the power equipment body, and the closed cover is rotatably installed inside the top heat dissipation groove.

[0010] As a preferred technical solution of the present invention, the discharge mechanism also includes a transmission connecting rod, a meshing gear and a main gear. The transmission connecting rod is installed at the end of the closed cover plate, the transmission connecting rod is rotatably connected to the side wall of the top heat dissipation groove, the meshing gear is installed at the end of the transmission connecting rod, and the main gear meshing with the meshing gear is installed at the end of the driving connecting rod.

[0011] As a preferred technical solution of the present invention, a sealing rubber strip is installed on the lower surface of the closed cover plate for sealing the top opening of the top heat dissipation slot.

[0012] As a preferred technical solution of the present invention, the cooling structure also includes a filtering mechanism, which is symmetrically installed on the inner wall of the power equipment body. The filtering mechanism includes a mounting frame and a filter screen. The mounting frame is installed on the inner wall of the power equipment body on the side of the heat dissipation groove, and the filter screen is slidably installed inside the mounting frame.

[0013] As a preferred technical solution of the present invention, limiting slide plates are installed on both sides of the filter screen plate, and limiting sliding grooves cooperating with the limiting slide plates for sliding are provided inside the mounting frame.

[0014] As a preferred technical solution of the present invention, the filtering mechanism further comprises a fixing screw, the fixing screw is threadedly mounted inside the limiting slide plate, and a thread groove engaging with the thread of the fixing screw is provided in the mounting frame.

[0015] A method for cooling electric power automation equipment comprises the following steps: S1. Install the components by installing the cooling mechanism, the exhaust mechanism and the filter mechanism inside the main body of the power equipment, wherein the filter mechanism is installed on the side of the heat dissipation port opened on the main body of the power equipment, and the cooling mechanism and the exhaust mechanism are installed on the top of the inner wall of the main body of the power equipment; S2, cooling, removing the heat generated by the operation of the internal components of the power equipment through the operation of the cooling mechanism itself; S3, multi-angle heat dissipation, driven by the driving motor, drives the connecting rod itself into a rotating state, drives the worm and the worm wheel to engage, and driven by the rotating rod, the angle of the heat dissipation fan itself changes, adjusts the working range of the heat dissipation fan itself, and comprehensively dissipates the internal components of the power equipment body; S4, discharge the hot gas. As the driving connecting rod rotates, the main gear and the meshing gear are driven to mesh, and the angle of the closed cover is adjusted to open the top heat dissipation slot as a whole. At this time, the heat dissipation fan is tilted up to blow the hot gas gathered above the main body of the power equipment. Such gas is directly discharged from the top heat dissipation slot under the blowing of wind. S5. Heat dissipation is completed. When the heat dissipation fan blows towards the top part, external dust and impurities cannot enter the device through the top heat dissipation slot. When the heat dissipation fan does not blow towards the top heat dissipation slot, the closed cover will close with the cooperation of various components to close the top heat dissipation slot as a whole, ensuring the cleanliness inside the device.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, by arranging a cooling mechanism and a discharge mechanism, the heat of the internal components of the power automation equipment can be removed and discharged at multiple angles and over a large range, and when the heat dissipation fan is rotated to the top, the closed cover is opened, so that the hot gas retained at the top of the equipment is directly discharged from the top heat dissipation groove. In the process of the top heat dissipation groove dissipating the hot gas, external impurities cannot pass through the top heat dissipation groove into the interior of the equipment. After the heat dissipation fan is rotated, the closed cover can close the top heat dissipation groove again, thereby ensuring the stability of the equipment during operation, being able to quickly discharge the heat inside the equipment, and shortening the heat discharge path.

[0017] In the present invention, by setting up a filtering mechanism, the heat dissipation ports opened on both sides of the device can be filtered and protected to prevent external impurities from passing through the heat dissipation ports and entering the interior of the device. The opening of the heat dissipation ports speeds up the flow of air inside the device and improves the heat dissipation effect of the device itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention.

[0019] Figure 2 It is a three-dimensional diagram of the internal structure of the main body of the power equipment of the present invention.

[0020] Figure 3 It is a three-dimensional diagram of the cooling mechanism structure of the present invention.

[0021] Figure 4 It is a structural schematic diagram of the transmission component in the present invention.

[0022] Figure 5 It is a structural schematic diagram of the discharge mechanism in the present invention.

[0023] Figure 6 It is an enlarged schematic diagram of the structure of the closed cover plate in the present invention.

[0024] Figure 7 It is a schematic diagram of the structure of the discharge mechanism and the driving connecting rod in the present invention.

[0025] Figure 8 It is a structural schematic diagram of the filtering mechanism in the present invention.

[0026] The corresponding relationship between the illustrations and component names in the figure is as follows: 1. Power equipment body; 2. Closing plate; 3. Main machine; 4. Cooling mechanism; 41. Cooling fan; 42. Support frame; 43. Rotating seat; 44. Transmission assembly; 441. Side bracket; 442. Worm gear; 443. Worm; 444. Driving connecting rod; 45. Driving motor; 5. Discharging mechanism; 51. Closing cover; 52. Top heat dissipation slot; 53. Driving connecting rod; 54. Meshing gear; 55. Main gear; 6. Filter mechanism; 61. Mounting frame; 62. Filter screen; 63. Fixing screw. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0030] Depend on Figure 1 and Figure 2As shown, it is a structural schematic diagram of the cooling structure of the electric automation equipment in this embodiment, including a cooling mechanism 4 installed inside the electric automation equipment, wherein the electric automation equipment is composed of an electric equipment main body 1, a closing plate 2 and a main machine 3, the main machine 3 is installed inside the electric equipment main body 1, and the closing plate 2 is installed at the side opening of the electric equipment main body 1. The cooling mechanism 4 is symmetrically installed at the top corner inside the electric equipment main body 1. The cooling mechanism 4 includes a heat dissipation fan 41, a support frame 42 and a rotating seat 43. The support frame 42 is symmetrically installed on the inner wall of the electric equipment main body 1, and the rotating seat 43 is rotatably installed between the support frames 42. The heat dissipation fan 41 is installed on the side of the rotating seat 43, and the operation of the heat dissipation fan 41 is used to remove the heat inside the electric equipment main body 1.

[0031] During use, the operation of the heat dissipation fan 41 can speed up the circulation of air inside the main body 1 of the power equipment, remove the heat generated when the main machine 3 inside the main body 1 of the power equipment is running, and achieve cooling of the equipment itself. Through the cooperation of the support frame 42, the rotating seat 43 and subsequent components, the working angle of the heat dissipation fan 41 itself can be flexibly adjusted, which is convenient for the heat dissipation fan 41 to perform comprehensive heat dissipation treatment on the main machine 3 inside the main body 1 of the power equipment, thereby expanding the working range of the heat dissipation fan 41 itself and ensuring the heat dissipation effect of the equipment itself.

[0032] By the attached Figure 3 As shown, it is a structural schematic diagram of the cooling mechanism 4 in this embodiment. The cooling mechanism 4 also includes a transmission component 44 and a drive motor 45. The transmission component 44 is installed on the side of the support frame 42, and the drive motor 45 is installed inside the power equipment body 1. The output end of the drive motor 45 is connected to the end of the transmission component 44.

[0033] During use, the driving motor 45 is operated to put the transmission assembly 44 into working state. The transmission assembly 44 conducts the rotation seat 43 inside the support frame 42 to adjust and change the angle of the heat dissipation fan 41, thereby expanding the working range of the heat dissipation fan 41 and facilitating the heat dissipation fan 41 to perform multi-angle cooling treatment on the main machine 3 inside the main body 1 of the power equipment.

[0034] By the attached Figure 4 As shown, it is a structural schematic diagram of the transmission component 44 in this embodiment, the transmission component 44 includes a side bracket 441, a worm wheel 442, a worm 443 and a driving connecting rod 444, the side bracket 441 is fixedly installed on the inner wall of the power equipment body 1 at the side of the support frame 42, the driving connecting rod 444 is installed at the output end of the driving motor 45, the worm 443 is installed on the outside of the driving connecting rod 444, the worm wheel 442 is meshed and installed at the bottom end of the worm 443, and the worm wheel 442 is connected to the rotating seat 43 through a rotating rod.

[0035] During use, the output end of the driving motor 45 is driven to rotate, driving the connecting rod 444 to enter a rotating state, driving the worm 443 to engage with the worm wheel 442, and utilizing the rotating rod installed in the worm wheel 442 to provide power for the angular rotation of the cooling fan 41 itself, and utilizing the irreversible characteristic of the engagement between the worm 443 and the worm wheel 442 to ensure the stability of the cooling fan 41 itself during operation.

[0036] By the attached Figure 5 As shown, it is a structural schematic diagram of the discharge mechanism 5 in this embodiment. The cooling structure also includes a discharge mechanism 5, and the discharge mechanism 5 includes a closed cover plate 51 and a top heat dissipation groove 52. The top of the power equipment body 1 is symmetrically provided with a top heat dissipation groove 52 for discharging the internal heat of the power equipment body 1, and the closed cover plate 51 is rotatably installed inside the top heat dissipation groove 52.

[0037] During use, the angle of the closed cover 51 is changed to open the top heat dissipation groove 52 as a whole, so that a large amount of hot gas retained at the top of the power equipment body 1 can be directly discharged through the top heat dissipation groove 52, rather than through the heat dissipation ports opened on both sides of the inner wall of the power equipment body 1. This shortens the discharge path of the hot gas and reduces the time that the hot gas remains in the power equipment body 1, making the overall cooling effect of the equipment more efficient.

[0038] By the attached Figure 7 As shown, it is a schematic diagram of the structure of the discharge mechanism 5 in this embodiment, and the discharge mechanism 5 also includes a transmission connecting rod 53, a meshing gear 54 and a main gear 55. The transmission connecting rod 53 is installed at the end of the closed cover plate 51, and the transmission connecting rod 53 is rotatably connected to the side wall of the top heat dissipation groove 52. The meshing gear 54 is installed at the end of the transmission connecting rod 53, and the main gear 55 meshing with the meshing gear 54 is installed at the end of the driving connecting rod 444.

[0039] During use, the main gear 55 outside the driving connecting rod 444 is driven to rotate by the rotation of the driving connecting rod 444 itself, so that the meshing gear 54 and the main gear 55 are meshed, providing power for the rotation of the transmission connecting rod 53 itself. When the heat dissipation fan 41 itself is tilted upward, the closed cover 51 is in an open state, which is convenient for the heat dissipation fan 41 to discharge the hot gas at the top of the internal top of the power equipment body 1 directly through the top heat dissipation groove 52.

[0040] By the attached Figure 6 As shown, it is a schematic diagram of the structure of the discharge mechanism 5 in this embodiment, and a sealing rubber strip is installed on the lower surface of the closing cover plate 51 to seal the top opening of the top heat dissipation slot 52.

[0041] During use, the installation of the sealing rubber strip can ensure that when the closed cover 51 is in contact with the top heat dissipation groove 52 , the overall sealing effect of the top heat dissipation groove 52 can be achieved, thereby preventing external impurities and dust from passing through the top heat dissipation groove 52 and entering the interior of the power equipment body 1 .

[0042] By the attached Figure 8 As shown, it is a structural schematic diagram of the filtering mechanism 6 in this embodiment. The cooling structure also includes a filtering mechanism 6, which is symmetrically installed on the inner wall of the power equipment body 1. The filtering mechanism 6 includes a mounting frame 61 and a filter screen plate 62. The mounting frame 61 is installed on the inner wall of the power equipment body 1 on the side of the heat dissipation groove, and the filter screen plate 62 is slidably installed inside the mounting frame 61.

[0043] During use, the filter plate 62 is installed inside the mounting frame 61 to filter the air flowing through the heat dissipation ports on both sides of the power equipment body 1, preventing external dust from entering the power equipment body 1 due to the flow of air, thereby ensuring the stability and cleanliness of the internal components of the power equipment body 1.

[0044] By the attached Figure 8 As shown, it is a structural schematic diagram of the filtering mechanism 6 in this embodiment, and limiting slides are installed on both sides of the filter screen plate 62, and a limiting slide groove cooperating with the sliding of the limiting slide is opened inside the mounting frame 61. During use, the installation of the limiting slide and the limiting slide groove can quickly calibrate the position of the filter screen plate 62, so as to facilitate the stable sliding of the filter screen plate 62 inside the mounting frame 61.

[0045] By the attached Figure 8 As shown, it is a schematic diagram of the structure of the filter mechanism 6 in this embodiment, the filter mechanism 6 also includes a fixing screw 63, the fixing screw 63 is installed on the internal thread of the limiting slide, and a thread groove for threaded engagement with the fixing screw 63 is provided in the mounting frame 61. During use, the filter screen plate 62 can be quickly locked in position by installing the fixing screw 63 to ensure the stability of the components of the filter mechanism 6 during operation.

[0046] By the attached Figures 1 to 8 As shown, a cooling method for electric power automation equipment comprises the following steps: S1. Install the components by installing the cooling mechanism 4, the discharge mechanism 5 and the filter mechanism 6 inside the power equipment body 1, wherein the filter mechanism 6 is installed on the side of the heat dissipation port opened by the power equipment body 1 itself, and the cooling mechanism 4 and the discharge mechanism 5 are installed on the top of the inner wall of the power equipment body 1; S2, cooling, through the operation of the cooling mechanism 4 itself, the heat generated by the operation of the internal components of the power equipment body 1 is removed, the air circulation speed inside the equipment is increased, and the heat inside the internal components of the equipment is discharged through the heat dissipation port due to the blowing of the wind; S3, multi-angle heat dissipation, through the drive of the driving motor 45, the driving connecting rod 444 itself enters a rotating state, driving the worm 443 and the worm wheel 442 to engage, and driven by the rotating rod, the angle of the heat dissipation fan 41 itself changes, and the working range of the heat dissipation fan 41 itself is adjusted to fully dissipate the internal components of the power equipment body 1; S4, the hot gas is discharged. As the driving connecting rod 444 rotates, the main gear 55 and the meshing gear 54 are meshed, the angle of the closed cover 51 is adjusted, the top heat dissipation slot 51 is opened as a whole, and the heat dissipation fan 41 is tilted at this time to blow the hot gas gathered in the air above the main body 1 of the power equipment. Such gas is directly discharged from the top heat dissipation slot 51 under the blowing of wind. S5. Heat dissipation is completed. When the heat dissipation fan 41 blows toward the top part, external dust and impurities cannot enter the inside of the device through the top heat dissipation slot 52. When the heat dissipation fan 41 does not blow toward the top heat dissipation slot 52, the closed cover 51 will close with the cooperation of various components to close the top heat dissipation slot 52 as a whole, thereby ensuring the cleanliness inside the device.

[0047] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection determined by the claims submitted for the present invention.

Claims

1. A cooling structure for electric power automation equipment, characterized in that: The invention comprises a cooling mechanism (4) installed inside an electric power automation device, wherein the electric power automation device comprises an electric power device body (1), a closing plate (2) and a main machine (3), wherein the main machine (3) is installed inside the electric power device body (1), and the closing plate (2) is installed at the side opening of the electric power device body (1), and the cooling mechanism (4) is symmetrically installed at the top corner inside the electric power device body (1), and the cooling mechanism (4) comprises a heat dissipation fan (41), a support frame (42) and a rotating seat (43), wherein the support frame (42) is symmetrically installed on the inner wall of the electric power device body (1), and the rotating seat (43) is rotatably installed between the support frames (42), and the heat dissipation fan (41) is installed on the side of the rotating seat (43), and the heat inside the electric power device body (1) is removed by the operation of the heat dissipation fan (41).

2. The cooling structure of electric power automation equipment according to claim 1, characterized in that: The cooling mechanism (4) further comprises a transmission assembly (44) and a drive motor (45); the transmission assembly (44) is mounted on the side of the support frame (42); the drive motor (45) is mounted inside the power equipment body (1); and the output end of the drive motor (45) is connected to the end of the transmission assembly (44).

3. The cooling structure of electric power automation equipment according to claim 2 is characterized in that: The transmission assembly (44) comprises a side bracket (441), a worm wheel (442), a worm (443) and a driving connecting rod (444); the side bracket (441) is fixedly mounted on the inner wall of the power equipment body (1) and located on the side of the support frame (42); the driving connecting rod (444) is mounted on the output end of the driving motor (45); the worm (443) is mounted on the outside of the driving connecting rod (444); the worm wheel (442) is meshedly mounted on the bottom end of the worm (443); and the worm wheel (442) is connected to the rotating seat (43) via a rotating rod.

4. The cooling structure of electric power automation equipment according to claim 3 is characterized in that: The cooling structure further comprises a discharge mechanism (5), the discharge mechanism (5) comprising a closed cover plate (51) and a top heat dissipation groove (52), the top of the power equipment body (1) being symmetrically provided with a top heat dissipation groove (52) for discharging internal heat of the power equipment body (1), and the closed cover plate (51) being rotatably mounted inside the top heat dissipation groove (52).

5. The cooling structure of electric power automation equipment according to claim 4, characterized in that: The discharge mechanism (5) further comprises a transmission connecting rod (53), a meshing gear (54) and a main gear (55); the transmission connecting rod (53) is mounted on the end of the closed cover plate (51); the transmission connecting rod (53) is rotatably connected to the side wall of the top heat dissipation groove (52); the meshing gear (54) is mounted on the end of the transmission connecting rod (53); and the main gear (55) meshing with the meshing gear (54) is mounted on the end of the driving connecting rod (444).

6. The cooling structure of electric power automation equipment according to claim 5, characterized in that: A sealing rubber strip is installed on the lower surface of the closing cover plate (51) for sealing the top opening of the top heat dissipation slot (52).

7. The cooling structure of electric power automation equipment according to claim 1, characterized in that: The cooling structure also includes a filtering mechanism (6), the filtering mechanism (6) being symmetrically mounted on the inner wall of the power equipment body (1), the filtering mechanism (6) comprising a mounting frame (61) and a filter screen plate (62), the mounting frame (61) being mounted on the inner wall of the power equipment body (1) at the side of the heat dissipation groove, and the filter screen plate (62) being slidably mounted inside the mounting frame (61).

8. The cooling structure of electric power automation equipment according to claim 7, characterized in that: Limiting slide plates are installed on both sides of the filter screen plate (62), and limiting sliding grooves cooperating with the limiting slide plates for sliding are provided inside the installation frame (61).

9. The cooling structure of electric power automation equipment according to claim 8, characterized in that: The filtering mechanism (6) further comprises a fixing screw (63), the fixing screw (63) being threadedly mounted inside the limiting slide plate, and a thread groove for threaded engagement with the fixing screw (63) is provided inside the mounting frame (61).

10. A method for cooling power automation equipment, using the power automation equipment cooling structure according to any one of claims 1 to 9, characterized in that: The steps include: S1. Installing the components by installing the cooling mechanism (4), the exhaust mechanism (5) and the filter mechanism (6) inside the main body (1) of the electric equipment, wherein the filter mechanism (6) is installed on the side of the heat dissipation opening of the main body (1) of the electric equipment, and the cooling mechanism (4) and the exhaust mechanism (5) are installed on the top of the inner wall of the main body (1) of the electric equipment; S2, cooling, removing heat generated by the operation of internal components of the power equipment body (1) through the operation of the cooling mechanism (4); S3, multi-angle heat dissipation, through the drive of the driving motor (45), the driving connecting rod (444) enters a rotating state, drives the worm (443) and the worm wheel (442) to engage, and driven by the rotating rod, the angle of the heat dissipation fan (41) itself changes, and the working range of the heat dissipation fan (41) itself is adjusted, so as to fully dissipate the internal components of the power equipment body (1); S4, the hot gas is discharged. As the driving connecting rod (444) rotates, the main gear (55) and the meshing gear (54) are driven to mesh, and the angle of the closed cover plate (51) is adjusted to open the top heat dissipation slot (51) as a whole. The heat dissipation fan (41) is tilted at this time to blow the hot gas gathered in the air above the main body (1) of the power equipment. Such gas is directly discharged from the top heat dissipation slot (51) under the blowing of wind. S5. Heat dissipation is completed. When the heat dissipation fan (41) blows toward the top portion, external dust and impurities cannot enter the device through the top heat dissipation slot (52). When the heat dissipation fan (41) does not blow toward the top heat dissipation slot (52), the closed cover plate (51) will close with the cooperation of various components, thereby sealing the top heat dissipation slot (52) as a whole.

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