Air guide drying device for electric box and control method

Abstract

The present application relates to the technical field of power equipment drying, and particularly relates to a wind-guiding drying device for an electric box and a control method. The device comprises a wind-guiding assembly, a lifting assembly, a horizontal moving assembly and a pitch adjusting assembly. The wind-guiding assembly comprises a wind-guiding cover and a bendable telescopic wind-guiding pipe connected to the wind-guiding cover. The air outlet of the wind-guiding cover is provided with a swing wind-guiding structure. Multiple swing blades of the swing wind-guiding structure are driven by a driving mechanism to swing synchronously. The lifting assembly, the horizontal moving assembly and the pitch adjusting assembly drive the wind-guiding cover to lift, horizontally move and adjust the pitch angle, respectively, to form a multi-degree-of-freedom three-dimensional air supply system. The present application can realize flexible adjustment of the air outlet direction without moving the whole heater. Through the combined wind sweeping of the pitch swing and the blade swing and the layer-by-layer scanning of the lifting assembly, the hot air uniformly covers the complex area inside the electric box, eliminates the drying dead angle, avoids local overheating or dampness, and significantly improves the drying uniformity and the equipment operation safety.

Description

Technical Field

[0001] This invention relates to the field of power equipment drying technology, and in particular to a ducted air drying device and control method for electrical boxes. Background Technology

[0002] Electrical boxes tend to accumulate dust, oil, and other contaminants after prolonged operation, requiring regular cleaning. If residual moisture inside the box is not dried promptly after cleaning, it can cause electrical components to become damp, reduce insulation, and even lead to short circuits or safety accidents. Warm air blowers are commonly used for drying electrical boxes due to their portability, high-temperature hot air output, and suitability for outdoor and power-free locations.

[0003] However, existing warm air blowers have significant shortcomings in drying applications: Firstly, the air outlet direction is fixed, and the entire device must be moved when the drying position needs to be changed. The heater is large and heavy, and frequent movement is not only labor-intensive, but also prone to causing equipment damage or safety hazards such as fuel line leakage.

[0004] Secondly, although some warm air blowers are equipped with air guides or oscillating mechanisms, their adjustment freedom is limited. They can usually only oscillate in one direction and cannot achieve multi-angle or multi-dimensional adjustment. The internal component layout of the electrical box is complex, making it difficult for the air to cover all gaps and dead corners that need to be dried, and it is easy to cause uneven local temperature, affecting the drying effect and insulation life. Summary of the Invention

[0005] The purpose of this invention is to provide a wind-guiding drying device and control method for electrical boxes, aiming to overcome the defects of existing technologies such as inconvenient adjustment of the air outlet direction of the warm air blower, incomplete drying coverage, and uneven temperature distribution.

[0006] The technical solution adopted to solve the above-mentioned technical problems is as follows: This invention provides a ducted drying device for an electrical box, comprising: An air guide assembly includes an air guide shroud and an air guide duct. The air guide shroud has an air inlet and an air outlet. The air guide duct is a flexible and extendable pipe structure. One end of the air guide duct is connected to the air inlet, and the other end is used to connect to a heater. The air outlet is provided with a swing air guide structure, which includes multiple swing blades arranged at intervals and a swing drive mechanism for driving the multiple swing blades to swing synchronously. The swing axis of the swing blades is perpendicular to the air outlet direction. A lifting assembly, wherein the air guide shroud is mounted on the lifting assembly, and the lifting assembly is used to drive the air guide shroud to reciprocate in the vertical direction; A horizontal moving component is disposed at the bottom of the lifting component and is used to drive the lifting component and the air guide shroud to move on a horizontal plane; A pitch adjustment component is connected between the lifting component and the air guide shroud, and is used to drive the air guide shroud to rotate around the horizontal axis to adjust the pitch angle of the air outlet.

[0007] The beneficial effects of the air-guiding drying device of the present invention are: This invention connects the heater to the air guide hood using a flexible and extendable air duct, allowing the air guide hood's range of motion to be unrestricted by the heater's main unit position. Combined with the coordinated operation of a horizontal movement component, a lifting component, a pitch adjustment component, and a swinging air guide structure, a four-degree-of-freedom three-dimensional airflow adjustment system is formed. The horizontal movement component moves the air guide hood horizontally, the lifting component moves the air guide hood vertically, the pitch adjustment component swings the air outlet around the horizontal axis, and the swinging air guide structure further refines the airflow direction through the synchronous swinging of the swinging blades. These four degrees of freedom operate independently yet collaboratively, allowing operators to precisely adjust the air outlet to any target position based on drying needs at different locations and depths within the electrical box without moving the entire heater. This effectively avoids the need for manual adjustment. Frequent equipment movement leads to manpower consumption and safety hazards. Meanwhile, the pitch adjustment component drives the air outlet to oscillate back and forth in the vertical plane, coordinating with the synchronous oscillation of the blades to form a composite sweeping trajectory in both the pitch and horizontal directions. This ensures that hot air is evenly distributed within the electrical box, preventing excessively high temperatures that could accelerate insulation aging or excessively low temperatures that could leave moisture residue. Furthermore, the lifting component can adjust the air guide hood layer by layer, allowing hot air to sequentially cover all areas inside the electrical box from top to bottom, creating a multi-dimensional, multi-level sweeping method. This directs hot air to all areas that traditional fixed warm air blowers cannot reach, completely eliminating drying dead zones and ensuring that all areas inside the electrical box receive sufficient and uniform drying treatment, significantly improving the consistency of drying results and the safety of electrical equipment operation.

[0008] As a further improvement to the above technical solution, the air guide shroud includes an air inlet pipe and an air outlet pipe that are rotatably connected in sequence along the airflow direction. The air guide shroud is also provided with a rotating mechanism that is pulsatorically connected to the air outlet pipe. The rotating mechanism is used to drive the air outlet pipe to rotate relative to the air inlet pipe around its own axis. The swing air guide structure is disposed inside the end of the air outlet pipe away from the air inlet pipe, and the air inlet pipe is mounted on the lifting assembly.

[0009] As a further improvement to the above technical solution, the inner peripheral wall of the air outlet pipe is fixedly provided with a plurality of guide vanes arranged at intervals along its circumference. The plurality of guide vanes extend in a spiral direction along the inner peripheral wall of the air outlet pipe to guide the airflow to flow out of the air outlet in a spiral shape when the air outlet pipe rotates.

[0010] As a further improvement to the above technical solution, the inner diameter of both the air inlet pipe and the air outlet pipe is gradually increased along the airflow direction.

[0011] As a further improvement to the above technical solution, one end of the air outlet pipe is rotatably sleeved on the outer periphery of the air inlet pipe, and a rotary bearing is provided between the air outlet pipe and the air inlet pipe. The rotating mechanism includes a toothed ring fixedly sleeved on the outer periphery of the air outlet pipe and a rotating drive unit installed on the air inlet pipe. The output end of the rotating drive unit is provided with a drive gear, which meshes with the toothed ring.

[0012] As a further improvement to the above technical solution, a plurality of the swing blades are arranged at intervals along a first direction, each swing blade extends along a second direction, and each swing blade is provided with a swing shaft at both ends of its extension direction, which is rotatably connected to the inner wall of the air outlet, and a sliding member is fixedly provided at one end of the swing blade and is eccentrically arranged with the swing shaft. The swing drive mechanism includes a sliding seat extending along the first direction and a swing drive source for driving the sliding seat to reciprocate along the first direction. The sliding seat is disposed at the air outlet and has a plurality of guide grooves extending along the air outlet direction. The plurality of guide grooves are slidably engaged with a plurality of sliding members in a one-to-one correspondence. The air outlet direction, the first direction, and the second direction are orthogonal to each other.

[0013] As a further improvement to the above technical solution, the lifting assembly includes two lifting columns and a crossbeam connected to the upper ends of the two lifting columns, each of the lifting columns being a telescopic rod structure that can be extended and adjusted; the air guide shroud is rotatably mounted on the crossbeam around a horizontal axis, and the pitch adjustment assembly is mounted on the crossbeam and is connected to the air guide shroud in a transmission connection.

[0014] As a further improvement to the above technical solution, a first temperature sensor is provided at the connection between the air duct and the heater, and the first temperature sensor is used to detect the air intake temperature in the air duct. The air guide cover is equipped with a second temperature sensor, which is used to detect the air outlet temperature.

[0015] Furthermore, the present invention also proposes a control method for drying electrical boxes, applied to the aforementioned air-guiding drying device, the control method comprising: Obtain the target drying location information inside the electrical box; Based on the target drying position information, control the horizontal moving component and the lifting component to move the air guide hood to the target horizontal position and target height; Control the movement of the pitch adjustment component to rotate the air guide shroud around the horizontal axis until the air outlet is at the target pitch angle; The swing drive mechanism is controlled to drive multiple swing blades to swing synchronously with a preset swing amplitude and a preset swing frequency. The heater is started, so that hot air flows through the air duct and the air guide cover before being blown towards the electrical box.

[0016] Furthermore, the control method also includes: After the heater is started, the rotating mechanism is controlled to drive the air outlet pipe to rotate back and forth around its own axis at a preset rotation speed and preset rotation amplitude. After the pitch angle of the air guide shroud is adjusted to the target pitch angle, the pitch adjustment component is controlled to drive the air guide shroud to swing back and forth around the horizontal axis at a preset pitch swing speed and preset pitch swing amplitude.

[0017] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a side view of an embodiment of the air-guiding drying device provided by the present invention in its usage state. Figure 2 This is a cross-sectional view of an embodiment of the air guide shroud provided by the present invention; Figure 3 yes Figure 2 A magnified view of part A in the middle; Figure 4 This is a transmission schematic diagram of an embodiment of the swing drive mechanism provided by the present invention; Figure 5 This is a front view schematic diagram of an embodiment of the air-guiding drying device provided by the present invention; Figure 6 This is a flowchart of an embodiment of the control method for drying electrical boxes provided by the present invention; Icon labels: Air guide assembly 100; air guide cover 110; air inlet 111; air outlet 112; slide 1121; second temperature sensor 1122; air inlet pipe 113; air outlet pipe 114; guide vane 1141; rotary bearing 115; rotary mechanism 116; gear ring 1161; rotary drive unit 1162; drive gear 1163; air guide duct 120; variable diameter connecting pipe head 121; first temperature sensor 1211; oscillating air guide structure 130; oscillating blade 131; oscillating shaft 1311; sliding member 1312; oscillating drive mechanism 132; sliding seat 1321; guide groove 13211; sliding column 13212; oscillating drive source 1322; oscillating drive unit 13221; oscillating connector 13222; drive groove 13223; Lifting assembly 200; Lifting column 210; Crossbeam 220; Rotating shaft 221; Horizontal movement component 300; pulley block 310; Pitch adjustment assembly 400; Heater 500; Electrical box 600. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0021] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or their sequential relationship.

[0022] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0023] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of the present invention, not all embodiments.

[0024] Reference Figures 1-5 The air-guiding drying device for the electrical box 600 of the present invention is provided in the following embodiment: like Figure 1 As shown, the air-guiding drying device of this embodiment includes an air-guiding assembly 100, a lifting assembly 200, a horizontal movement assembly 300, and a pitch adjustment assembly 400. The air-guiding assembly 100 guides the hot air generated by the heater 500 to the target position; the lifting assembly 200 drives the air-guiding assembly 100 to move vertically; the horizontal movement assembly 300 is located at the bottom of the lifting assembly 200 and moves the entire device horizontally; the pitch adjustment assembly 400 is connected between the lifting assembly 200 and the air-guiding assembly 100 and adjusts the pitch angle of the air outlet 112 on the air-guiding assembly 100. Through the coordinated operation of these components, this invention can achieve flexible positioning and air sweeping of the air outlet 112 in multiple degrees of freedom in space without moving the heater 500, meeting the uniform drying requirements of the complex space inside the electrical box 600.

[0025] It is understood that the specific installation positions and connection relationships of the above components can be adjusted according to the actual application scenario. For example, in some embodiments, the horizontal moving component 300 can be directly installed on the bottom of the lifting component 200; in other embodiments, the horizontal moving component 300 can also be set as a mobile chassis independent of the lifting component 200, and the lifting component 200 is fixedly installed on the mobile chassis. All of these are within the protection scope of the present invention.

[0026] like Figure 1 As shown, the air guide assembly 100 includes an air guide shroud 110 and an air guide duct 120. For example... Figure 2As shown, the air guide shroud 110 has an air inlet 111 and an air outlet 112, and an airflow channel connecting the air inlet 111 and the air outlet 112 is formed inside the air guide shroud 110. The air guide shroud 110 is made of heat-resistant material, preferably stainless steel, but not limited to this, other high-temperature resistant metal materials (such as aluminum alloy, titanium alloy) or high-performance engineering plastics (such as polyetheretherketone PEEK, polyphenylene sulfide PPS) can also be used. The beneficial effects of using heat-resistant materials are: the hot air temperature at the outlet of the heater 500 can usually reach 80°C~150°C or even higher. The heat-resistant material can ensure that the air guide shroud 110 does not undergo thermal deformation or performance degradation under long-term high-temperature conditions, maintain the geometric accuracy of the airflow channel, and thus ensure the stability of the air outlet direction and the uniformity of airflow distribution; at the same time, the air guide shroud 110 is made of a single material or a combination of materials with similar coefficients of linear expansion, which can effectively reduce the changes in fitting clearance or internal stress caused by the difference in thermal expansion and contraction of different materials when the temperature changes, further improving the reliability of long-term use.

[0027] like Figure 1 As shown, the air duct 120 is a flexible and extendable pipe structure, such as... Figure 2 As shown, one end of the air duct 120 is connected to the air inlet 111 of the air guide shroud 110, as... Figure 1 As shown, the other end is used to connect to the outlet of the heater 500. The air duct 120 is also made of heat-resistant material. As a preferred implementation of this embodiment, the air duct 120 is made of stainless steel corrugated flexible hose, which has good bending flexibility and can be extended and retracted along the axial direction, making it easy for the air guide cover 110 to move and be positioned freely within a certain space. Through the flexible and retractable structural design of the air duct 120, the range of motion of the air guide cover 110 is not limited by the position of the heater 500 main unit - the heater 500 can be fixed in a safe position outside the electrical box 600, while the air guide cover 110 can be flexibly moved to various target areas inside the electrical box 600 under the drive of the lifting component 200, the horizontal moving component 300, etc., without the need to move the bulky heater 500 main unit as a whole.

[0028] The air duct 120 is not limited to stainless steel corrugated hoses. It can also be a metal braided hose coated with high-temperature resistant rubber, or a segmented hinged rigid pipe section structure. The pipe sections are connected by ball joints or universal joints to achieve multi-directional bending.

[0029] like Figure 1As shown, the air inlet of the air duct 120 is connected to the outlet of the heater 500 via a reducing pipe head 121. The inner diameter of the reducing pipe head 121 gradually expands along the airflow direction (i.e., the inner diameter gradually increases along the airflow direction). Its working principle is as follows: when hot air enters the section with a smaller inner diameter from the outlet of the heater 500, the flow velocity increases. Subsequently, when it flows through the expanding section, the dynamic pressure of the airflow is converted into static pressure, which has the effect of moderately pressurizing and stabilizing the airflow. This helps to reduce the pressure loss and temperature stratification of the airflow during long-distance transportation, ensuring that the hot air enters the air hood 110 uniformly with a higher static pressure, thereby improving the air velocity and drying efficiency of the outlet 112.

[0030] like Figure 1 and Figure 2 As shown, an oscillating air guide structure 130 is provided at the air outlet 112. (As indicated...) Figure 2 As shown, the oscillating air guide structure 130 includes multiple oscillating blades 131 and an oscillating drive mechanism 132. The multiple oscillating blades 131 are arranged at intervals along a first direction (left-right direction in this embodiment), and each oscillating blade 131 extends along a second direction (up-down direction in this embodiment). The oscillation axis of the oscillating blades 131 is perpendicular to the air outlet direction (i.e., the third direction) of the air outlet 112. Preferably, the air outlet direction, the first direction, and the second direction are orthogonal to each other; that is, the air outlet direction of the air outlet 112 is a horizontal front-back direction, the first direction is a horizontal left-right direction, and the second direction is a vertical up-down direction. However, it is understood that the above orthogonal relationship is only a preferred embodiment. In some application scenarios, depending on the specific layout of the internal space of the electrical box 600, the directions may also have other angular relationships, all of which fall within the protection scope of this invention.

[0031] like Figure 2 and Figure 3 As shown, each oscillating blade 131 has an oscillating shaft 1311 at both ends of its extending direction. The oscillating shaft 1311 is rotatably connected to the upper and lower inner walls of the air outlet 112, allowing each oscillating blade 131 to rotate freely around the axis of the oscillating shaft 1311. Figure 3 As shown, a sliding member 1312 is fixedly provided at one end (the upper end in this embodiment) of each swing blade 131. The sliding member 1312 is eccentrically arranged with the swing shaft 1311, that is, the axis of the sliding member 1312 does not coincide with the axis of the swing shaft 1311, is parallel to each other and is spaced a certain distance apart.

[0032] like Figure 3 As shown, the swing drive mechanism 132 includes a sliding seat 1321 and a swing drive source 1322. Figure 3 and Figure 4As shown, the sliding seat 1321 extends along a first direction, and multiple guide grooves 13211 extending along the air outlet direction are provided on the sliding seat 1321. The multiple guide grooves 13211 and multiple sliding members 1312 are slidably engaged in a one-to-one correspondence, that is, each sliding member 1312 is respectively inserted into the corresponding guide groove 13211 and can slide freely along the length direction of the guide groove 13211. The sliding seat 1321 is disposed at the air outlet 112, and the sliding seat 1321 can reciprocate relative to the air outlet 112 along the first direction. The transmission principle is as follows: When the sliding seat 1321 reciprocates along the first direction, the guide groove 13211 moves together with the sliding seat 1321. The inner wall of the guide groove 13211 pushes the sliding member 1312 to slide within the guide groove 13211. Since the sliding member 1312 and the swing shaft 1311 are eccentrically set, the translational motion of the sliding member 1312 is converted into the rotational motion of the swing blade 131 around the swing shaft 1311, thereby realizing the synchronous swing of each swing blade 131. In this process, the swing angle of the swing blade 131 depends on the displacement of the sliding seat 1321 along the first direction. The larger the displacement, the larger the swing angle, and vice versa.

[0033] In this embodiment, as Figure 3 and Figure 4 As shown, the wall of the air outlet 112 is provided with a plurality of sliding grooves 1121 extending along a first direction. A sliding post 13212, corresponding to and slidingly engaging with each of the sliding grooves 1121, is fixedly mounted on the sliding seat 1321. Each sliding post 13212 extends from its corresponding sliding groove 1121 to the outside of the air guide shroud 110. One of the sliding posts 13212 (located at the end or middle of the sliding seat 1321) is connected to the swing drive source 1322. The swing drive source 1322 includes a swing drive unit 13221 and a swing connector 13222. The swing drive unit 13221 is preferably a servo motor, but is not limited to this; a stepper motor or a rotary cylinder may also be used. The drive end of the swing drive unit 13221 is fixedly connected to one end of the swing connector 13222. The other end of the swing connector 13222 has a drive groove 13223 extending along its extension direction, which slidesly engages with the aforementioned sliding post 13212. When the swing drive unit 13221 drives the swing connector 13222 to swing, the swing connector 13222 converts the rotational motion into the reciprocating linear motion of the sliding column 13212 along the first direction through the sliding engagement between the drive groove 13223 and the sliding column 13212, thereby driving the sliding seat 1321 to reciprocate along the first direction. The above-mentioned transmission method between the swing drive unit 13221 and the swing connector 13222 is only a preferred implementation. Its advantages are that it has a compact structure, high transmission efficiency, and the swing amplitude of the swing blade 131 can be adjusted by changing the length of the swing connector 13222 and the position of the drive groove 13223.

[0034] The swing drive source 1322 is not limited to the combination of the motor and the swing connector 13222 described above. For example, a linear motor or electric push rod can be used directly, with its output end directly connected to the sliding seat 1321 or connected through a connecting rod, thereby directly driving the sliding seat 1321 to reciprocate along the first direction without the need for motion conversion by the swing connector 13222.

[0035] like Figure 1 As shown, the air guide shroud 110 is mounted on the lifting assembly 200, which drives the air guide shroud 110 to reciprocate vertically. Figure 1 and 5 As shown, in this embodiment, the lifting assembly 200 includes two lifting columns 210 and a crossbeam 220, with the crossbeam 220 fixedly connected to the upper ends of the two lifting columns 210. Each lifting column 210 is a telescopic rod structure that can be telescopically adjusted. Its telescopic mechanism can adopt a multi-section stacked sleeve structure, and the height can be extended or retracted through manual adjustment or automatic drive. The air guide shroud 110 is rotatably mounted on the crossbeam 220 via the pitch adjustment assembly 400.

[0036] The telescopic drive method of the lifting column 210 is not limited to manual adjustment. It can also adopt various forms such as screw and nut mechanism (driven by the drive motor to rotate the screw, and the nut to drive the inner tube to rise and fall), cylinder or hydraulic cylinder drive (driven by fluid pressure to push the piston rod to rise and fall), or gear and rack mechanism (driven by the motor to move the gear up and down along the fixed rack).

[0037] like Figure 2 and Figure 5 As shown, the pitch adjustment assembly 400 is mounted on the crossbeam 220 and located at the connection between the crossbeam 220 and the air guide shroud 110. The pitch adjustment assembly 400 is used to drive the air guide shroud 110 to rotate around the horizontal axis, thereby adjusting the pitch angle of the air outlet 112 relative to the horizontal plane. In this embodiment, the pitch adjustment assembly 400 includes a pitch drive motor (preferably a servo motor or a stepper motor, but not limited to these). The body of the pitch drive motor is fixedly mounted on the crossbeam 220, and its output shaft is fixedly connected to the rotation shaft 221 of the air guide shroud 110 or driven by a reducer. When the pitch drive motor rotates forward or backward, the air guide shroud 110 rotates upward or downward around the horizontal axis, thereby changing the orientation angle of the air outlet 112 in the vertical plane.

[0038] like Figure 1 and Figure 5As shown, the horizontal moving component 300 is disposed at the bottom of the lifting component 200 and is used to move the lifting component 200 and the air guide hood 110 on a horizontal surface. In this embodiment, the horizontal moving component 300 includes a pulley group 310 (such as swivel casters) disposed at the bottom of each lifting column 210. The operator can push the entire device to move it freely to the target position on the horizontal ground. Preferably, at least one pulley in the pulley group 310 is equipped with a braking mechanism. When the device moves to the target position, the braking mechanism can lock the device in the current position to prevent accidental displacement due to vibration or external force during the drying process.

[0039] The horizontal movement component 300 is not limited to the manually driven pulley block 310. In applications requiring a high degree of automation, the horizontal movement component 300 can employ a track-slider mechanism. Guide rails are laid on the ground or work platform, and each lifting column 210 has a slider at its bottom that slides along the guide rails. A drive motor (such as a linear motor or servo motor with a lead screw) drives the sliders to reciprocate along the guide rails, achieving precise automatic positioning of the air guide shroud 110 on the horizontal plane.

[0040] In this embodiment of the invention, a flexible and extendable air duct 120 connects the heater 500 to the air guide shroud 110, so that the range of motion of the air guide shroud 110 is not limited by the position of the heater 500. With the coordinated action of the horizontal movement component 300, the lifting component 200, the pitch adjustment component 400, and the oscillating air guide structure 130, a four-degree-of-freedom three-dimensional air supply adjustment system is formed: the horizontal movement component 300 moves the air guide shroud 110 in the horizontal plane; the lifting component 200 moves the air guide shroud 110 up and down in the vertical direction; the pitch adjustment component 400 oscillates the air outlet 112 around the horizontal axis; and the oscillating air guide structure 130 further refines the air outlet direction through the synchronous oscillation of the oscillating blades 131. The four degrees of freedom mentioned above are independent of each other and do not interfere with each other. They can work together simultaneously or in stages, allowing operators to precisely adjust the air outlet 112 to any target position according to the drying needs of different locations and depths inside the electrical box 600 without moving the entire heater 500. This effectively avoids the increased manpower consumption, equipment collision damage, and fuel line leakage caused by frequently moving the large and heavy heater 500.

[0041] Meanwhile, during the drying process, the pitch adjustment component 400 can drive the air outlet 112 to swing back and forth in the vertical plane with a set amplitude and a set frequency. This, combined with the synchronous swing of the swing blades 131, forms a composite sweeping trajectory in the pitch and horizontal directions. This makes the distribution of hot air in the internal space of the electrical box 600 more uniform, effectively avoiding the dual risks of localized excessively high temperature (accelerating the aging of insulation materials or even causing thermal breakdown) or localized excessively low temperature (resulting in a decrease in insulation performance due to residual moisture) caused by hot air being concentrated on a fixed area for a long time. In addition, the lifting component 200 can drive the air guide hood 110 to rise and fall vertically layer by layer or continuously and uniformly during the drying process, so that the hot air covers all height areas inside the electrical box 600 from top to bottom in sequence, forming a multi-dimensional and multi-level air sweeping mode of horizontal sweeping, pitch swinging, and vertical layer-by-layer scanning. This directs the hot air to all the parts to be dried that are difficult for traditional fixed warm air blowers 500 to reach (such as narrow gaps on the back of components, cable gaps, and hidden areas under busbars), completely eliminating drying dead corners and ensuring that all areas inside the electrical box 600 are fully and uniformly dried, significantly improving the consistency of drying effect and ensuring the safe and reliable operation of electrical equipment.

[0042] Furthermore, such as Figure 2 As shown, the air guide shroud 110 includes an air inlet pipe 113 and an air outlet pipe 114 that are rotatably connected in sequence along the airflow direction (i.e., the flow direction of hot air after entering the air guide shroud 110 from the air guide duct 120). The air inlet pipe 113 serves as the fixed part of the air guide shroud 110, with its inlet end connected to the air guide duct 120. The air inlet pipe 113 is integrally mounted on the crossbeam 220 of the lifting assembly 200, maintaining a fixed posture. The air outlet pipe 114 serves as the movable part of the air guide shroud 110, rotatably connected to the outlet end of the air inlet pipe 113, and can freely rotate relative to the air inlet pipe 113 around its own axis. The swinging air guide structure 130 is disposed inside the end of the air outlet pipe 114 away from the air inlet pipe 113 (i.e., at the air outlet 112), and rotates together with the air outlet pipe 114. The air guide cover 110 is also provided with a rotating mechanism 116 that is connected to the air outlet pipe 114 for transmission. The rotating mechanism 116 is used to drive the air outlet pipe 114 to rotate relative to the air inlet pipe 113 around its own axis.

[0043] The beneficial effects of the split rotating connection structure of the air inlet pipe 113 and the air outlet pipe 114 are as follows: On the one hand, the rotational freedom of the air outlet pipe 114 is independent of the pitch freedom (achieved by the pitch adjustment component 400) and the lifting freedom (achieved by the lifting component 200) of the air guide shroud 110 as a whole. Without changing the overall orientation of the air guide shroud 110, the air outlet 112 can rotate around its own axis, thereby changing the direction and distribution of the airflow in space and further enriching the adjustment dimension of the air supply direction. On the other hand, the swinging air guide structure 130 rotates synchronously with the air outlet pipe 114, so that the relative orientation of the swinging plane of the swinging blade 131 and the air outlet 112 changes accordingly. This allows for flexible adjustment of the angle between the sweeping direction and the inner wall and components of the electrical box 600 according to the specific layout inside the electrical box 600, achieving more precise directional air supply.

[0044] To achieve smooth rotation and axial positioning between the air outlet pipe 114 and the air inlet pipe 113, in this embodiment, as follows: Figure 2 As shown, one end of the air outlet pipe 114 (i.e., the end closest to the air inlet pipe 113) is rotatably fitted onto the outer circumference of the air inlet pipe 113. A rotary bearing 115 (preferably a ball bearing or roller bearing) is provided between the inner circumferential wall of the air outlet pipe 114 and the outer circumferential wall of the air inlet pipe 113. The inner ring of the rotary bearing 115 is fixedly engaged with the outer wall of the air inlet pipe 113, and the outer ring of the rotary bearing 115 is fixedly engaged with the inner wall of the air outlet pipe 114, so that the air outlet pipe 114 can rotate around the air inlet pipe 113 with extremely low frictional resistance, while ensuring the coaxiality and axial positioning accuracy between the two.

[0045] Furthermore, such as Figure 2 As shown, the inner diameters of both the inlet pipe 113 and the outlet pipe 114 are gradually widening along the airflow direction (i.e., the cross-sectional area of ​​the flow gradually increases from the inlet end to the outlet end). Its working principle and beneficial effects are as follows: when hot air enters the inlet end of the smaller-diameter inlet pipe 113 from the air duct 120, the flow velocity is relatively high. As the airflow moves forward along the gradually widening inner wall of the pipe, the cross-sectional area of ​​the flow gradually increases, and the airflow velocity gradually decreases. Part of the dynamic pressure is converted into static pressure, thereby achieving deceleration and pressurization of the airflow and rectification and homogenization. This helps to eliminate turbulence and uneven velocity distribution generated during long-distance transport in the air duct 120, making the airflow velocity distribution at the outlet 112 more uniform and the flow direction more stable, thus improving the consistency of the drying effect.

[0046] Furthermore, such as Figure 2 and Figure 5As shown, the inner peripheral wall of the air outlet pipe 114 is fixedly provided with a plurality of guide vanes 1141 arranged at intervals along its circumference. The plurality of guide vanes 1141 extend in a spiral direction along the inner peripheral wall of the air outlet pipe 114 (that is, each guide vane 1141 has the same spiral angle relative to the axis of the air outlet pipe 114, forming a spiral guide structure similar to rifling). When the rotating mechanism 116 drives the air outlet pipe 114 to rotate around its own axis, the guide vane 1141 rotates together with the air outlet pipe 114. The rotating guide vane 1141 applies a tangential velocity component to the passing airflow, thereby guiding the airflow to flow out of the air outlet 112 in a spiral shape (i.e., a swirling state). The beneficial effect of this spiral airflow is that the spiral-flowing hot air has a longer movement path and a larger lateral diffusion range compared to the straight-flowing airflow, which can form a wide-angle diffusion effect in the internal space of the electrical box 600, effectively increasing the area covered by a single sweep. At the same time, the spiral airflow has a higher turbulence intensity, which is conducive to more sufficient convective heat exchange between the hot air and the inner wall of the electrical box 600 and the surface of the components, thereby improving the drying efficiency. In addition, by changing the rotation speed of the air outlet pipe 114, the swirling intensity and diffusion angle of the spiral airflow can be flexibly adjusted. The higher the rotation speed, the greater the tangential velocity of the airflow, the larger the spiral angle, and the wider the diffusion range of the airflow. Conversely, the lower the rotation speed, the more the airflow tends to be directional and linear, which is suitable for scenarios where concentrated hot air is needed to intensify the drying of a local area.

[0047] like Figure 2 As shown, the specific structure of the rotating mechanism 116 is as follows: it includes a gear ring 1161 fixedly sleeved on the outer periphery of the air outlet pipe 114 and a rotating drive unit 1162 mounted on the outer wall of the air inlet pipe 113. The gear ring 1161 is preferably an external gear ring, meaning its outer circumferential surface has teeth. The gear ring 1161 is coaxially and fixedly connected to the air outlet pipe 114 and rotates together with it. The rotating drive unit 1162 is preferably a servo motor or a stepper motor (but not limited to these; a pneumatic motor or a hydraulic motor can also be used). Its body is fixedly mounted on the outer wall of the air inlet pipe 113 to ensure that the rotating drive unit 1162 and the air inlet pipe 113 remain relatively fixed. The output end of the rotating drive unit 1162 is provided with a drive gear 1163, which meshes with the gear ring 1161. When the rotary drive unit 1162 is powered on, the drive gear 1163 rotates. Through the meshing transmission between the drive gear 1163 and the gear ring 1161, the gear ring 1161 and the air outlet pipe 114 fixedly connected to it rotate around their own axis. By controlling the rotation speed and direction of the rotary drive unit 1162, the rotation speed, rotation direction and rotation amplitude of the air outlet pipe 114 can be precisely controlled (i.e., reciprocating rotation within a set angle range).

[0048] The advantages of the aforementioned drive gear 1163 and gear ring 1161 meshing transmission method are: precise transmission ratio, no slippage loss, fast response speed, and high positioning accuracy. It is especially suitable for the sweeping mode that requires the air outlet pipe 114 to reciprocate within a set angle range (rather than unidirectional continuous rotation). By controlling the rotary drive unit 1162 to alternate between forward and reverse rotation, the air outlet pipe 114 can be made to swing back and forth within a preset angle range. With the help of the guide vane 1141, the airflow forms a composite motion trajectory of spiral scanning and reciprocating sweeping inside the electrical box 600, further expanding the sweeping coverage area and improving the uniformity of hot air distribution. At the same time, the gear meshing transmission has good self-locking characteristics. Even when the rotary drive unit 1162 is de-energized, the air outlet pipe 114 can maintain its current angle position, avoiding accidental deflection of the air outlet pipe 114 due to wind pressure reaction force.

[0049] The rotating mechanism 116 is not limited to the gear and gear ring 1161 meshing transmission method. In some embodiments, the rotating mechanism 116 may also adopt a direct drive method.

[0050] The aforementioned separate rotating structure of the air inlet pipe 113 and the air outlet pipe 114, the drive gear 1163 and gear ring 1161 transmission scheme of the rotating mechanism 116, the airflow homogenization design of the gradually expanding pipe diameter, and the swirling flow generation structure of the spiral guide vane 1141 work together to form the fifth degree of freedom for adjusting the air outlet direction, namely the rotational degree of freedom of the air outlet pipe 114 around its own axis. This degree of freedom, together with the four degrees of freedom of horizontal movement (horizontal movement component 300), vertical lifting (lifting component 200), pitch oscillation (pitch adjustment component 400), and blade oscillation (oscillating air guide structure 130), forms a five-degree-of-freedom three-dimensional air supply adjustment system. This system can achieve all-round air supply coverage at any position, orientation, and airflow pattern in space, ensuring that all complex layouts inside the electrical box 600 can be thoroughly, uniformly, and efficiently dried.

[0051] For ease of design and installation, in some embodiments, a battery assembly can be installed on the air outlet pipe 114 to power the swing drive unit 13221, which is connected to the controller via a wireless signal.

[0052] Furthermore, such as Figure 1As shown, a first temperature sensor 1211 is provided at the connection between the air duct 120 and the heater 500. Specifically, the first temperature sensor 1211 can be located inside the air inlet of the air duct 120 (i.e., the end near the outlet of the heater 500), on the wall of the air inlet of the air duct 120, or at the reducing connector 121 between the air duct 120 and the outlet of the heater 500, as long as it can detect the initial temperature of the hot air output from the heater 500 when it enters the air duct 120. The first temperature sensor 1211 is used to detect the inlet air temperature in the air duct 120 in real time, that is, the temperature value when the hot air output from the heater 500 enters the air duct 120.

[0053] like Figure 1 and Figure 2 As shown, a second temperature sensor 1122 is provided on the air guide shroud 110. Specifically, the second temperature sensor 1122 is located at or near the air outlet 112. It can be embedded in the air outlet end wall of the air guide shroud 110 or fixed in the airflow channel of the air outlet 112 by a bracket. It is used to detect the air outlet temperature at the air outlet 112 of the air guide shroud 110 in real time, that is, the temperature value of the hot air after being transported by the air guide duct 120 and the internal channel of the air guide shroud 110 and finally blown out from the air outlet 112.

[0054] The first temperature sensor 1211 and the second temperature sensor 1122 mentioned above are preferably thermocouple temperature sensors or thermistor temperature sensors, which have the advantages of fast response speed, high measurement accuracy and good high temperature resistance. However, they are not limited to these. Infrared temperature sensors or fiber optic temperature sensors can also be used. Those skilled in the art can flexibly choose according to the actual measurement accuracy requirements and cost budget.

[0055] The air-guiding drying device is also equipped with a controller (not shown in the attached figure). The controller is connected to the control terminal of the first temperature sensor 1211, the second temperature sensor 1122, and the heater 500 via signal or electrical connection. The controller is used to acquire the inlet air temperature value detected by the first temperature sensor 1211 and the outlet air temperature value detected by the second temperature sensor 1122, and to adjust the working state of the heater 500 in real time according to the above temperature values.

[0056] By monitoring the output temperature of the heater 500 in real time through the first temperature sensor 1211, the temperature of the hot air entering the air duct 120 can be ensured to be within the preset safe operating range. When the first temperature sensor 1211 detects that the inlet air temperature exceeds the preset safe threshold, the controller can issue an alarm signal or automatically control the heater 500 to reduce its output power or stop the machine, so as to avoid damage to the internal structure of the air duct 120 and the air guide cover 110 by excessively hot air, or thermal damage to the electrical components in the electrical box 600.

[0057] By monitoring the actual air outlet temperature at the air outlet 112 in real time using the second temperature sensor 1122, the final hot air temperature acting inside the electrical box 600 can be accurately determined. Since the hot air inevitably experiences a certain degree of temperature drop due to heat dissipation from the duct wall during its long-distance transport along the duct 120, and this temperature drop is affected by various factors such as ambient temperature, the degree of curvature and length of the duct 120, there is often a deviation between the set temperature of the heater 500 and the actual air outlet temperature. Direct measurement by the second temperature sensor 1122 can obtain the true drying temperature acting on the electrical box 600, providing a reliable data basis for precise temperature control.

[0058] Furthermore, by combining the detection values ​​of the first temperature sensor 1211 and the second temperature sensor 1122, the controller can calculate the temperature drop of the hot air during the delivery process in real time (i.e., the difference between the inlet and outlet air temperatures). When this temperature drop exceeds the preset normal range, it may indicate abnormalities such as excessive bending of the air duct 120 leading to poor airflow, damage to the duct wall causing increased heat loss, or blockage inside the air duct 120. The controller can then prompt the operator to perform inspection and maintenance through audible and visual alarms or a display screen to ensure that the equipment is always in optimal working condition.

[0059] Furthermore, both the first temperature sensor 1211 and the second temperature sensor 1122 are connected to digital displays, allowing workers to directly observe the inlet and outlet air temperature values.

[0060] Furthermore, this invention also proposes a control method for drying the electrical box 600, applied to the air-guiding drying device of the above embodiments. It is understood that the steps in this control method can be executed sequentially as described below, or the execution order of some steps can be adjusted according to actual drying needs, or certain steps can be combined or executed in parallel, all of which fall within the protection scope of this invention.

[0061] The following combination Figure 6 The control flowchart shown below provides a detailed explanation of the specific implementation of this control method, which includes the following steps: Step S100: Obtain the target drying location information inside the electrical box 600.

[0062] Specifically, before starting the drying operation, the controller first acquires the target location information inside the target electrical box 600 that needs to be dried. This target drying location information may include the spatial coordinate data of the target area, or the operator may visually determine the location to be dried and then manually control the horizontal moving component 300 and the lifting component 200 to move the air guide hood 110 to the target location, or the air guide hood 110 may be positioned by sending a movement command via a remote control. The automatic acquisition function in this step is not a necessary technical feature and can be omitted according to the actual application requirements.

[0063] Step S200: Based on the target drying position information, control the horizontal moving component 300 and the lifting component 200 to move the air guide hood 110 to the target horizontal position and target height.

[0064] For horizontal control: such as Figure 1 and Figure 5 As shown, the controller sends a movement command to the drive unit of the horizontal moving component 300, controlling the horizontal moving component 300 to move the lifting component 200 and the air guide hood 110 mounted on it on the horizontal plane until the air outlet 112 of the air guide hood 110 is aligned with or covers the horizontal coordinate area corresponding to the target drying position. When the horizontal moving component 300 is manually pushed by the pulley block 310, this step can be performed by the operator manually pushing the entire device to the target horizontal position according to the position indication on the controller display or by visual judgment.

[0065] For vertical control: such as Figure 1 and Figure 5 As shown, the controller sends a lifting command to the drive unit of the lifting assembly 200, controlling the extension and retraction of the lifting column 210, which in turn drives the crossbeam 220 and the air guide hood 110 to rise and fall vertically until the air outlet 112 of the air guide hood 110 is aligned with the target height corresponding to the target drying position. When the lifting column 210 uses a manual telescopic sleeve, this step can be performed by the operator manually adjusting the extension length of the lifting column 210 and locking it in place.

[0066] It should be noted that the execution order of horizontal movement control and lifting control can be interchanged. That is, the lifting component 200 can be controlled to rise to the target height first, and then the horizontal movement component 300 can be controlled to move to the target horizontal position. Alternatively, both can be executed simultaneously to shorten the positioning time. Both of the above methods are within the protection scope of this invention.

[0067] In some embodiments, step S200 may also include dynamic sweeping control of the air guide hood 110 in the horizontal and / or vertical directions. That is, after positioning is completed, the horizontal moving component 300 and / or the lifting component 200 are controlled to move back and forth in a small range near the target position, so that the air outlet 112 sweeps continuously within a certain range to cover a larger drying area. This is suitable for drying scenarios where the target area is large and single-point positioning cannot completely cover the area.

[0068] Step S300: Control the pitch adjustment component 400 to rotate the air guide shroud 110 around the horizontal axis until the air outlet 112 is at the target pitch angle.

[0069] Specifically, after the air guide shroud 110 reaches the target position in both horizontal and vertical directions, the controller sends a pitch adjustment command to the pitch adjustment assembly 400. For example... Figure 2 As shown, the pitch adjustment component 400 drives the air guide hood 110 to rotate around the horizontal axis according to the instruction, so that the air outlet 112 of the air guide hood 110 rotates in the vertical plane until the angle between the axis of the air outlet 112 and the horizontal plane reaches the target pitch angle, so that the airflow direction of the air outlet 112 is precisely pointed to the target drying area inside the electrical box 600 in the vertical direction.

[0070] It should be noted that the execution order of steps S200 and S300 can be interchanged. That is, the pitch angle can be adjusted first and then the horizontal position and height can be adjusted, or they can be performed simultaneously. All of the above-mentioned orders are within the protection scope of this invention.

[0071] In some embodiments, the target pitch angle can also be manually adjusted by the operator using the pitch control button on the remote control. The operator observes the actual air outlet direction of the air outlet 112 while adjusting until the airflow accurately covers the target drying area. This method does not require precise spatial coordinate calculation and is suitable for scenarios where the operator is experienced or where the positioning accuracy requirement is not high.

[0072] Step S400: Control the swing drive mechanism 132 to drive multiple swing blades 131 to swing synchronously with a preset swing amplitude and preset swing frequency.

[0073] Specifically, after the air guide shroud 110 has been initially positioned in terms of both spatial location and pitch angle, the controller sends a swing control command to the swing drive mechanism 132. The swing drive source 1322 then operates according to this command, such as... Figure 3 and Figure 4 As shown, the rotational motion is converted into reciprocating linear motion through the swing connector 13222, the sliding seat 1321, and the guide groove 13211, which drives each sliding member 1312 to slide along the guide groove 13211, thereby driving multiple swing blades 131 to swing synchronously around their respective swing shafts 1311. During the synchronous swinging process, each swing blade 131 causes the air outlet 112 to sweep back and forth in the horizontal direction (i.e., in the plane where the first direction is located), thereby enabling the hot air to periodically expand and contract in the horizontal direction inside the electrical box 600.

[0074] The preset swing amplitude refers to the maximum swing angle range of a single swing blade 131 on both sides of its equilibrium position. The size of the preset swing amplitude directly determines the horizontal sweep coverage width of the hot air. The larger the swing amplitude, the wider the horizontal diffusion range of the outlet airflow, and the larger the horizontal area covered by a single sweep. Those skilled in the art can preset an appropriate swing amplitude value based on the horizontal width inside the electrical box 600 and the horizontal dimensions of the target drying area.

[0075] The preset oscillation amplitude refers to the maximum oscillation angle range of a single oscillating blade 131 on both sides of its equilibrium position. The preset oscillation frequency determines the horizontal sweeping speed of the outlet airflow. A higher oscillation frequency results in a faster sweeping speed and better uniformity of hot air distribution in the horizontal direction. However, an excessively high oscillation frequency may lead to increased airflow inertia and periodic fluctuations in the impact force when the hot air reaches the inner wall of the electrical box 600. A lower oscillation frequency results in a longer residence time of the hot air at each position and a stronger local heating effect. Those skilled in the art can preset an appropriate oscillation frequency value based on the area of ​​the target drying area, the depth of the internal space of the electrical box 600, and the required drying efficiency.

[0076] Step S500: Control the start of the heater 500, so that the hot air flows through the air duct 120 and the air duct cover 110 in sequence and then blows towards the electrical box 600.

[0077] Specifically, after the spatial positioning and air outlet direction adjustment of the air guide shroud 110 are completed in steps S200 to S400 (or during the process synchronized with the above steps), the controller sends a start command to the heater 500. The heater 500 starts the heating and air supply functions according to the command, generating hot air. After the hot air is output from the outlet end of the heater 500, it first enters the air inlet end of the air guide duct 120, and is transported along the internal channel of the air guide duct 120 to the air inlet 111 of the air guide shroud 110. Then, it is blown out from the air outlet 112 through the airflow channel inside the air guide shroud 110, and finally blown towards the target drying area inside the electrical box 600 according to the air outlet direction and air outlet pattern determined in steps S200 to S400, so as to perform hot air drying treatment on the components and cavities inside the electrical box 600.

[0078] It should be noted that the timing of starting the heater 500 in step S500 does not necessarily have to be after step S400 is completed. In practical applications, the heater 500 can be started for preheating before step S200, or started synchronously with steps S200 to S400, to ensure that the heater 500 has entered a stable working state and outputs hot air at a constant temperature when the air guide shroud 110 is positioned, thereby saving waiting time.

[0079] Control methods also include: Step S600: After the heater 500 is started, the control rotation mechanism 116 drives the air outlet pipe 114 to rotate back and forth around its own axis at a preset rotation speed and preset rotation amplitude.

[0080] Specifically, with the heater 500 already running and hot air flowing steadily through the air guide shroud 110, the controller sends a rotation control command to the rotation mechanism 116. The rotation drive unit 1162 operates according to this command, driving the air outlet pipe 114 to reciprocate around its own axis within a preset angle range via the meshing transmission between the drive gear 1163 and the gear ring 1161 (i.e., rotating clockwise at a certain angle and then reversing back to the original position, then reversing again at a certain angle and then rotating clockwise back to the original position, repeating this cycle). During the reciprocating rotation of the air outlet pipe 114, multiple guide vanes 1141 fixedly mounted on its inner circumferential wall rotate together with the air outlet pipe 114, applying a tangential velocity component to the passing airflow and guiding the airflow to flow out of the air outlet 112 in a spiral shape. As the rotation direction of the air outlet pipe 114 changes continuously, the spiral direction of the airflow also changes accordingly, causing the hot air to sweep back and forth inside the electrical box 600 in a spiral shape. The sweeping direction changes continuously in a plane perpendicular to the air outlet direction, effectively expanding the diffusion range of the hot air in both the horizontal and vertical directions inside the electrical box 600.

[0081] The preset rotation speed refers to the angular velocity of the air pipe 114 during rotation. The rotation speed determines the magnitude of the tangential velocity obtained by the airflow. The higher the rotation speed, the greater the tangential velocity, the larger the spiral angle of the airflow, and the greater the diffusion range and turbulence intensity. Conversely, the lower the rotation speed, the more the airflow tends to blow out in a straight line, and the stronger the directionality. Those skilled in the art can set it according to the required swirling intensity and the internal space dimensions of the electrical box 600.

[0082] The preset rotation amplitude refers to the maximum rotation angle range on one side of the air outlet pipe 114 during its reciprocating rotation. The rotation amplitude determines the maximum lateral diffusion range of the spiral airflow inside the electrical box 600; the larger the rotation amplitude, the wider the sweeping range of the airflow in the lateral direction. It should be noted that the rotation amplitude of the air outlet pipe 114 is independent of the swing amplitude of the oscillating blade 131. The two adjust the airflow in different directions: the rotation of the air outlet pipe 114 controls the spiral diffusion range of the entire airflow, while the swing of the oscillating blade 131 controls the sweeping angle of the air outlet direction.

[0083] The reciprocating rotation of the air outlet pipe 114 and the synchronous oscillation of the swing blades 131 work in coordination, and their motion frequencies and phases can be set by the controller. For example, the reciprocating rotation frequency of the air outlet pipe 114 can be set to an integer or fractional multiple of the oscillation frequency of the swing blades 131, so that the motion cycles of the two are coupled, thereby forming a more complex and uniform airflow distribution pattern in the internal space of the electrical box 600, further improving the uniformity of hot air distribution.

[0084] Step S700: After the pitch angle of the air guide shroud 110 is adjusted to the target pitch angle, the pitch adjustment component 400 is controlled to drive the air guide shroud 110 to swing back and forth around the horizontal axis at a preset pitch swing speed and preset pitch swing amplitude.

[0085] Specifically, after the pitch angle positioning of the air guide hood 110 is completed (i.e., the air outlet 112 is precisely pointing to the center of the target drying area), the controller can further control the pitch adjustment component 400 to drive the air guide hood 110 to swing back and forth slightly on both sides of the target pitch angle (i.e., swinging upwards at a certain angle and then returning to the target angle, then swinging downwards at a certain angle and then returning to the target angle, and so on in a cycle). This reciprocating swing causes the air outlet 112 to sweep back and forth in the vertical plane, thereby allowing the hot air to reciprocate in the depth and height directions inside the electrical box 600, further eliminating drying dead corners in the vertical direction and improving the uniformity of hot air coverage in the depth direction inside the electrical box 600.

[0086] The preset pitch swing speed refers to the angular velocity of the air shroud 110 during its pitch swing. This speed determines the sweeping speed of the air outlet 112 in the vertical direction. The faster the speed, the shorter the sweeping cycle in the vertical direction, and the shorter the residence time of the hot air at each depth position. Conversely, the slower the speed, the longer the heating time at each depth position, but the longer it takes to complete a full sweeping cycle. Those skilled in the art can set this speed according to the depth dimension of the target area and the required heating intensity.

[0087] The preset pitch swing amplitude guides the maximum swing angle range of the wind shield 110 on one side of the target pitch angle. The pitch swing amplitude determines the sweeping range of the hot air in the vertical direction. The larger the amplitude, the wider the coverage of the airflow in the height direction, which is more conducive to covering the entire depth area of ​​the electrical box 600 from top to bottom.

[0088] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0089] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A fan-guided drying device for an electrical box, characterized in that, include: An air guide assembly includes an air guide shroud and an air guide duct. The air guide shroud has an air inlet and an air outlet. The air guide duct is a flexible and extendable pipe structure. One end of the air guide duct is connected to the air inlet, and the other end is used to connect to a heater. The air outlet is provided with a swing air guide structure, which includes multiple swing blades arranged at intervals and a swing drive mechanism for driving the multiple swing blades to swing synchronously. The swing axis of the swing blades is perpendicular to the air outlet direction. A lifting assembly, wherein the air guide shroud is mounted on the lifting assembly, and the lifting assembly is used to drive the air guide shroud to reciprocate in the vertical direction; A horizontal moving component is disposed at the bottom of the lifting component and is used to drive the lifting component and the air guide shroud to move on a horizontal plane; A pitch adjustment assembly is connected between the lifting assembly and the air guide shroud, and is used to drive the air guide shroud to rotate around the horizontal axis to adjust the pitch angle of the air outlet. The air guide hood includes an air inlet pipe and an air outlet pipe that are rotatably connected in sequence along the airflow direction. The air guide hood is also provided with a rotating mechanism that is throttledly connected to the air outlet pipe. The rotating mechanism is used to drive the air outlet pipe to rotate relative to the air inlet pipe around its own axis. The swing air guide structure is disposed inside the end of the air outlet pipe away from the air inlet pipe. The air inlet pipe is installed on the lifting assembly. Multiple oscillating blades are arranged at intervals along a first direction, each oscillating blade extends along a second direction, and each oscillating blade is provided with an oscillating shaft at both ends of its extending direction, which is rotatably connected to the inner wall of the air outlet. A sliding member is fixedly provided at one end of the oscillating blade and is eccentrically disposed with the oscillating shaft. The swing drive mechanism includes a sliding seat extending along the first direction and a swing drive source for driving the sliding seat to reciprocate along the first direction. The sliding seat is disposed at the air outlet and has a plurality of guide grooves extending along the air outlet direction. The plurality of guide grooves are slidably engaged with a plurality of sliding members in a one-to-one correspondence. The air outlet direction, the first direction, and the second direction are orthogonal to each other. The lifting assembly includes two lifting columns and a crossbeam connected to the upper ends of the two lifting columns. Each lifting column is a telescopic rod structure that can be extended and adjusted. The air guide shroud is rotatably mounted on the crossbeam around a horizontal axis. The pitch adjustment assembly is mounted on the crossbeam and is connected to the air guide shroud in a transmission manner.

2. The air-guiding drying device according to claim 1, characterized in that: The inner peripheral wall of the air outlet pipe is fixedly provided with a plurality of guide vanes arranged at intervals along its circumference. The plurality of guide vanes extend in a spiral direction along the inner peripheral wall of the air outlet pipe to guide the airflow to flow out of the air outlet in a spiral shape when the air outlet pipe rotates.

3. The air-guiding drying device according to claim 1, characterized in that: The inner diameters of both the air inlet pipe and the air outlet pipe are gradually widened along the airflow direction.

4. The air-guiding drying device according to claim 1, characterized in that: One end of the air outlet pipe is rotatably sleeved on the outer periphery of the air inlet pipe, and a rotary bearing is provided between the air outlet pipe and the air inlet pipe; The rotating mechanism includes a toothed ring fixedly sleeved on the outer periphery of the air outlet pipe and a rotating drive unit installed on the air inlet pipe. The output end of the rotating drive unit is provided with a drive gear, which meshes with the toothed ring.

5. The air-guiding drying device according to claim 1, characterized in that: A first temperature sensor is provided at the connection between the air duct and the heater, and the first temperature sensor is used to detect the air intake temperature in the air duct. The air guide cover is equipped with a second temperature sensor, which is used to detect the air outlet temperature.

6. A control method for drying an electrical box, characterized in that, The control method, applied to the air-guiding drying apparatus as described in any one of claims 1 to 5, comprises: Obtain the target drying location information inside the electrical box; Based on the target drying position information, control the horizontal moving component and the lifting component to move the air guide hood to the target horizontal position and target height; Control the movement of the pitch adjustment component to rotate the air guide shroud around the horizontal axis until the air outlet is at the target pitch angle; The swing drive mechanism is controlled to drive multiple swing blades to swing synchronously with a preset swing amplitude and a preset swing frequency. The heater is started, so that hot air flows through the air duct and the air guide cover before being blown towards the electrical box.

7. The control method according to claim 6, characterized in that: The air guide hood includes an air inlet pipe and an air outlet pipe that are rotatably connected in sequence along the airflow direction. The air guide hood is also provided with a rotating mechanism that is throttledly connected to the air outlet pipe. The rotating mechanism is used to drive the air outlet pipe to rotate relative to the air inlet pipe around its own axis. The swing air guide structure is disposed inside the end of the air outlet pipe away from the air inlet pipe. The air inlet pipe is installed on the lifting assembly. The control method further includes: After the heater is started, the rotating mechanism is controlled to drive the air outlet pipe to rotate back and forth around its own axis at a preset rotation speed and preset rotation amplitude. After the pitch angle of the air guide shroud is adjusted to the target pitch angle, the pitch adjustment component is controlled to drive the air guide shroud to swing back and forth around the horizontal axis at a preset pitch swing speed and preset pitch swing amplitude.

Images