Portable hot air de-icing device

Abstract

The application discloses a portable hot air deicing device, and relates to the field of hot air deicing, which comprises a box body, a gas source device, a gas heating device and a gas supply pipe arranged in the box body in sequence, and a jet port positioning device arranged on the outer wall of the box body and connected with the gas supply pipe at the input end, wherein the gas heating device comprises a heating box arranged in the box body, an air flow regulating component arranged in the heating box, and two heating components arranged on the inner wall of the heating box in axial symmetry with the air flow regulating component, and the exhaust end of the heating box is connected with the gas supply pipe; the gas source device comprises two air inlet components arranged symmetrically on the two sides of the outer wall of the box body, and a gas supply component arranged in the box body and connected with the air inlet components at the input end and with the air inlet end of the heating box at the output end. The portable deicing device is integrated by the organic integration of the functions of air inlet preheating, intelligent heating regulation and control, multi-degree-of-freedom accurate positioning and remote walking, and realizes safe, efficient and uninterrupted power supply accurate deicing.

Description

Technical Field

[0001] This invention relates to the technical field of hot air de-icing, specifically a portable hot air de-icing device. Background Technology

[0002] With the continuous expansion of power systems and the increasing demands for power supply reliability, transformers, as core equipment in power transmission and transformation, are crucial to the safe and stable operation of the entire power grid. In cold, rainy, and snowy winter weather, outdoor transformer bushings and heat sinks are prone to icing. This ice not only reduces the heat dissipation performance of the equipment but can also lead to ice bridges between heat sinks, causing partial discharges and even flashover accidents, seriously threatening the safe and stable operation of the power system. Therefore, timely and effective removal of ice from transformers is a vital step in ensuring a reliable power supply during winter.

[0003] Currently, de-icing operations for live equipment such as transformers mainly employ traditional methods such as manual knocking, mechanical de-icing after a power outage, or natural melting. Manual knocking requires operators to be close to the live equipment, posing a high risk of electric shock, and the striking force is difficult to control, easily causing mechanical damage to ceramic components or heat sinks. Mechanical de-icing after a power outage requires interrupting power supply, severely affecting the continuity of power grid supply, resulting in significant economic losses and social impact. Natural melting, on the other hand, has an excessively long cycle and cannot meet the needs of emergency de-icing and power preservation. While some existing technologies have proposed hot air de-icing solutions, they still exhibit significant shortcomings in practical applications: the inlet filter is prone to frosting and clogging in low-temperature environments, leading to poor airflow; the heating method is singular, resulting in low thermal energy utilization, and the outlet air temperature cannot be precisely and dynamically adjusted; the nozzle positioning mechanism has limited flexibility, making it difficult to implement multi-angle precise spraying in narrow and concealed areas such as the gaps between transformer heat sinks.

[0004] In summary, the key problem that the existing technology urgently needs to solve is: how to provide a portable hot air de-icing device that can achieve air intake antifreeze and efficient heat energy utilization without interrupting power supply or contacting electrical equipment, so as to adapt to the complex and ever-changing de-icing needs on site. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a portable hot air de-icing device to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a portable hot air de-icing device, comprising a housing, a gas source device, a gas heating device, and a gas supply pipe sequentially disposed within the housing, and a jet nozzle positioning device disposed on the outer wall of the housing with its input end connected to the gas supply pipe; the gas heating device includes a heating chamber disposed within the housing, an air flow control component disposed within the heating chamber, and two heating components symmetrically disposed on the inner wall of the heating chamber about the air flow control component as an axis; the exhaust end of the heating chamber is connected to the gas supply pipe; the gas source device includes two air inlet components symmetrically disposed on both sides of the outer wall of the housing, and a gas supply component disposed within the housing with its input end connected to the air inlet components and its output end connected to the air inlet end of the heating chamber; the heating components are positioned corresponding to the air inlet components and are capable of radiating heat to the air inlet components.

[0007] Preferably, the airflow control component includes a micro motor located at the top of the heating chamber with its actuating end penetrating through the heating chamber, a guide plate located at the actuating end of the micro motor, and a plurality of first resistance heating plates symmetrically arranged on the outer wall of the guide plate; the micro motor is located at one end of the heating chamber near the air source device. In this preferred embodiment, by adjusting the angle of the guide plate with the motor, the airflow distribution on both sides inside the heating chamber can be dynamically changed, achieving precise control of the outlet air temperature; at the same time, the guide plate itself can also heat the air, further enhancing the heating effect and making the de-icing operation more stable and controllable.

[0008] Preferably, the heating component includes a plurality of second resistance heating plates arranged in a linear array on the inner wall of the heating chamber, and a heat radiation plate disposed on the outer wall of the second resistance heating plates. In this preferred embodiment, the use of a heat radiation plate increases the contact area between the heating element and the air, resulting in higher heat exchange efficiency compared to direct heating. This allows the flowing air to heat up rapidly and evenly, quickly forming a high-temperature airflow for de-icing.

[0009] Preferably, the air intake component includes an air intake box disposed on the outer wall of the housing, a metal filter screen disposed on the inner wall of the air intake box, and a plurality of heat-conducting plates connected at one end to the metal filter screen and at the other end to a second resistance heating plate. In this preferred embodiment, the heat-conducting plates directly conduct heat from the heating component to the metal filter screen, keeping the filter screen at a high temperature at all times. This not only preheats the intake cold air but also completely solves the problem of poor air intake caused by frost on the filter screen, ensuring the air intake efficiency and operational reliability of the equipment in freezing environments.

[0010] Preferably, the air supply component includes an air pump disposed within the housing, the air pump input end being connected to the top of the two air inlet boxes via a pipe, and the air pump output end being connected to the air inlet of the heating box via a pipe. In this preferred embodiment, the use of an air pump for active air supply overcomes the air resistance of the long pipe and heating components, providing a stable and high-speed airflow, ensuring strong power for hot air jetting, thereby significantly improving de-icing efficiency.

[0011] Preferably, the nozzle positioning device includes a rotating tube whose outer wall is hinged to the outer wall of the housing via a bearing seat, an angle adjustment component disposed on the outer wall of the housing for adjusting the tilt angle of the rotating tube, and a telescopic adjustment component disposed at the end of the rotating tube. In this preferred embodiment, through the hinged structure, the nozzle positioning device can be adjusted flexibly and extensively in both pitch and telescopic dimensions, easily and accurately aligning the nozzle with icing areas of different heights and depths on the transformer.

[0012] Preferably, the tilt adjustment component includes a first bearing seat disposed on the outer wall of the housing, a second bearing seat disposed on the outer wall of the rotating tube, and a first electric cylinder disposed on the first bearing seat; the actuating end of the first electric cylinder is connected to the second bearing seat. In this preferred embodiment, the linkage mechanism driven by the electric cylinder realizes remote and precise adjustment of the tilt angle of the rotating tube, which is easy to operate and has a robust structure, and can maintain stable and reliable positioning in harsh outdoor de-icing operations.

[0013] Preferably, the telescopic adjustment component includes a telescopic tube with one end slidably connected to the inner wall of the rotating tube and the other end extending to the outside of the rotating tube, and a second electric cylinder disposed on the outer wall of the rotating tube and with its actuating end connected to the outer wall of the telescopic tube. In this preferred embodiment, using an electric cylinder to drive the linear movement of the telescopic tube can further extend the working radius of the air jet, facilitating the direct delivery of hot air to the dead corners of electrical equipment at a greater distance. The structure is compact and the operation is smooth.

[0014] Preferably, the device further includes a jet nozzle angle adjustment component, which comprises an extension frame hinged at one end to the outer wall of the telescopic tube, a worm gear disposed on the outer wall of the extension frame, a drive motor disposed on the outer wall of the telescopic tube, a worm located at the actuating end of the drive motor and meshing with the worm gear, and a flexible tube with one end connected to the telescopic tube and the other end passing through the extension frame and extending to the outside of the extension frame. In this preferred embodiment, the worm gear mechanism is used for end-point angle adjustment, which has self-locking properties and can accurately and stably fix the jet direction, avoiding angle deviation caused by jet reaction force; combined with the flexible tube, the final air outlet can move flexibly, achieving precise de-icing from multiple angles without blind spots.

[0015] Preferably, the bottom of the housing is equipped with a remote control frame; both the rotating tube and the telescopic tube have an insulation layer on their outer walls. In this preferred embodiment, the remote control frame allows operators to control the equipment remotely without entering an electrified area, thus ensuring personal safety from the source; the addition of an insulation layer to the outer wall of the gas pipeline minimizes heat loss of the high-temperature airflow during transmission, resulting in a higher final spray temperature and better de-icing effect.

[0016] In summary, the present invention has the following main beneficial effects:

[0017] The portable de-icing device of this invention integrates functions such as air intake preheating, intelligent heating control, multi-degree-of-freedom precise positioning, and remote control walking through an integrated design. It fundamentally solves the problems of high risk, low efficiency, and poor adaptability in de-icing operations of live equipment, and achieves safe, efficient, and uninterrupted precise de-icing.

[0018] In terms of safety protection and energy efficiency, a remote control frame is installed at the bottom of the device, allowing operators to remotely control the equipment to travel to a safe distance from outside the safety fence without having to enter the live area, thus eliminating the risk of electric shock from the source.

[0019] The heat generated by the heating element is conducted to the metal filter at the air intake end through a heat-conducting plate. This not only preheats the intake cold air but also keeps the filter at a relatively high temperature, completely eliminating the risk of filter frost and clogging in freezing environments, thus ensuring smooth air intake and operational reliability. The heating element uses a heat radiation plate to significantly increase the contact area with the air, thereby significantly improving heat exchange efficiency.

[0020] In terms of temperature control and jet positioning, the airflow regulation component dynamically changes the airflow distribution between the two heating zones by driving a micro motor to a deflector. When the temperature drops on one side due to a continuous large flow of air, the controller drives the deflector to deflect towards that side to reduce the airflow outlet, allowing the temperature to rise naturally. Combined with the deflector's own heating function, this achieves precise and stable control of the outlet air temperature.

[0021] The nozzle positioning device features pitch, extension, and end-angle adjustment capabilities. The tilt and extension adjustments allow the nozzle to flexibly extend into confined spaces such as the gaps between transformer heat sinks. The worm gear mechanism at the end utilizes its self-locking characteristic to precisely fix the airflow direction, preventing deviation even under high-pressure jet reaction force, thus achieving precise multi-angle removal of ice-covered blind spots. The entire process does not involve contact with live equipment; meltwater flows orderly into the collection tank, efficiently and safely completing the de-icing task. Attached Figure Description

[0022] Figure 1 This is an isometric view of the overall structure of the device of the present invention;

[0023] Figure 2This is an exploded view of the overall structure of the device of the present invention;

[0024] Figure 3 This is an exploded view of the jet nozzle positioning device of the present invention;

[0025] Figure 4 For the present invention Figure 3 Enlarged view of the structure at point A in the image;

[0026] Figure 5 This is an exploded view of the gas source device and gas heating device of the present invention;

[0027] Figure 6 For the present invention Figure 5 Enlarged view of the structure at point B in the image;

[0028] Figure 7 This is a top view of the overall structure of the device of the present invention;

[0029] Figure 8 This is a side view of the overall structure of the device of the present invention.

[0030] Figure Descriptions: 10. Box body; 11. Remote control frame; 20. Air source device; 21. Air intake component; 211. Air intake box; 212. Metal filter; 213. Heat-conducting plate; 22. Air supply component; 221. Air pump; 30. Gas heating device; 31. Heating box; 32. Air flow control component; 321. Miniature motor; 322. Deflector plate; 323. First resistance heating plate; 33. Heating component; 331. Second resistance heating plate. 332. Heat radiation plate; 40. Air supply pipe; 50. Jet nozzle positioning device; 51. Rotating pipe; 52. Tilt angle adjustment component; 521. First bearing seat; 522. Second bearing seat; 523. First electric cylinder; 53. Telescopic adjustment component; 531. Telescopic pipe; 532. Second electric cylinder; 54. Jet nozzle angle adjustment component; 541. Extension frame; 542. Worm gear; 543. Drive motor; 544. Worm; 545. Flexible tube. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0032] The embodiments of the present invention will now be described.

[0033] Please refer to the appendix for details. Figure 1 , 2As shown in Figures 7 and 8, in a preferred embodiment of the present invention, a portable hot air de-icing device includes a housing 10, an air source device 20, a gas heating device 30 and an air supply pipe 40 arranged sequentially inside the housing 10, and a jet nozzle positioning device 50 arranged on the outer wall of the housing 10 and connected to the air supply pipe 40 at its input end. A remote control frame 11 is provided at the bottom of the housing 10.

[0034] It should be noted that, in this preferred embodiment, when de-icing a transformer in operation, the operator stands outside the safety fence and remotely controls the vehicle frame 11 to move the device to a safe distance of 3.5 meters from the transformer body. The nozzle positioning device 50 adjusts the nozzle outlet to the set position, and the air source device 20 and the gas heating device 30 are turned on. The air source device 20 first sends airflow into the gas heating device 30. The airflow heated by the gas heating device 30 enters the nozzle positioning device 50 through the air supply pipe 40 and is finally discharged through the exhaust port of the nozzle positioning device 50. During de-icing, the exhaust port of the nozzle positioning device 50 is precisely aimed at the iced area of ​​the transformer. The exhaust port of the nozzle positioning device 50 can also extend into the gap of the heat sink and swing back and forth to spray. The ice begins to melt and fall off rapidly, and the melted water flows into the water collection tank along the surface of the equipment without forming a bridging flashover. The entire process does not contact the live equipment, operates without power interruption, and efficiently and safely completes the transformer de-icing task.

[0035] Please refer to the appendix for details. Figure 2 , 5As shown in Figure 6, in another preferred embodiment of the present invention, the gas heating device 30 includes a heating box 31 disposed within the housing 10, an air flow control component 32 disposed within the heating box 31, and two heating components 33 symmetrically disposed on the inner wall of the heating box 31 with the air flow control component 32 as the axis. The exhaust end of the heating box 31 is connected to the gas supply pipe 40. The gas source device 20 includes two air inlet components 21 symmetrically disposed on both sides of the outer wall of the housing 10, and a gas supply component 22 disposed within the housing 10 with its input end connected to the air inlet component 21 and its output end connected to the air inlet end of the heating box 31. The heating component 33 is positioned corresponding to the air inlet component 21 and can radiate heat to the air inlet component 21. The air flow control component 32 includes a micro motor 321 disposed on the top of the heating box 31 with its actuation end penetrating through the heating box 31, and a guide plate 321 disposed on the actuation end of the micro motor 321. 22, and a plurality of first resistance heating plates 323 symmetrically arranged on the outer wall of the guide plate 322; the micro motor 321 is located at one end of the heating box 31 near the air source device 20; the heating component 33 includes a plurality of second resistance heating plates 331 arranged in a linear array on the inner wall of the heating box 31, and a heat radiation plate 332 arranged on the outer wall of the second resistance heating plates 331; the air intake component 21 includes an air intake box 211 arranged on the outer wall of the box 10, a metal filter 212 arranged on the inner wall of the air intake box 211, and a plurality of heat-conducting plates 213 connected at one end to the metal filter 212 and at the other end to the second resistance heating plates 331; the air supply component 22 includes an air pump 221 arranged in the box 10, the input end of the air pump 221 is connected to the top of the two air intake boxes 211 through a pipe, and the output end of the air pump 221 is connected to the air intake end of the heating box 31 through a pipe.

[0036] It should be noted that, in this preferred embodiment, when the air source device 20 is working, the outside cold air enters after being filtered by the metal filter 212 of the air inlet box 211. The second resistance heating plate 331 in the heating component 33 is energized to generate heat and radiates heat to the metal filter 212 through the heat radiation plate 332, so that the air being drawn in is preheated when it flows through the metal filter 212. As a result, the metal filter 212 itself is free from frost, ensuring smooth air intake. The preheated air is pressurized by the air pump 221 and sent into the heating box 31.

[0037] When the gas heating device 30 is working, in the initial state the guide plate 322 is biased towards one of the heating components 33. At this time, the air outlet between the guide plate 322 and one of the heating components 33 is small, and the air outlet between the guide plate 322 and the other heating component 33 is large. A small air outlet corresponds to a small air flow, and a large air outlet corresponds to a large air flow.

[0038] The heating element 33, with its high airflow, heats the air, causing its temperature to gradually decrease. When the temperature measured by the temperature sensor inside the air supply pipe 40 falls below a set value, the controller triggers the micro motor 321. The output of the micro motor 321 drives the guide plate 322 to rotate until the guide plate 322 is tilted towards the other heating element 33.

[0039] With a small air outlet and reduced airflow, the temperature between the guide vane 322 and another heating element 33 gradually increases.

[0040] Furthermore, the first resistance heating plate 323 generates heat when energized and radiates heat to the air, while the second resistance heating plate 331 generates heat when energized and radiates heat to the heat radiation plate 332. The second resistance heating plate 331 increases its contact area with the air through the heat radiation plate 332, thereby increasing the heat radiation efficiency.

[0041] Please refer to the appendix for details. Figure 1 , 2 As shown in Figures 3 and 4, in another preferred embodiment of the present invention, the jet nozzle positioning device 50 includes a rotating tube 51 whose outer wall is hinged to the outer wall of the box body 10 via a bearing seat, an angle adjustment component 52 disposed on the outer wall of the box body 10 for adjusting the angle of the rotating tube 51, and a telescopic adjustment component 53 disposed at the end of the rotating tube 51. The angle adjustment component 52 includes a first bearing seat 521 disposed on the outer wall of the box body 10, a second bearing seat 522 disposed on the outer wall of the rotating tube 51, and a first electric cylinder 523 disposed on the first bearing seat 521. The actuating end of the first electric cylinder 523 is connected to the second bearing seat 522. The telescopic adjustment component 53 includes one end slidably connected to the inner wall of the rotating tube 51 and the other end extending to the rotating tube. The rotating tube 51 includes an external telescopic tube 531 and a second electric cylinder 532 located on the outer wall of the rotating tube 51 and connected to the outer wall of the telescopic tube 531 at its actuating end. It also includes a jet nozzle angle adjustment component 54, which includes an extension frame 541 with one end hinged to the outer wall of the telescopic tube 531, a worm gear 542 located on the outer wall of the extension frame 541, a drive motor 543 located on the outer wall of the telescopic tube 531, a worm 544 located at the actuating end of the drive motor 543 and meshing with the worm gear 542, and a flexible tube 545 with one end connected to the telescopic tube 531 and the other end passing through the extension frame 541 and extending to the outside of the extension frame 541. Both the rotating tube 51 and the outer wall of the telescopic tube 531 are provided with a heat insulation layer.

[0042] It should be noted that, in this preferred embodiment, when the jet nozzle positioning device 50 is working, the extension and retraction of the actuator end of the first electric cylinder 523 can drive the rotating tube 51 to rotate, thereby changing the tilt angle of the rotating tube 51 and adjusting the position of the flexible tube 545.

[0043] Furthermore, the actuator of the second electric cylinder 532 can drive the telescopic tube 531 to move, so that the telescopic tube 531 can extend out of the rotating tube 51 or retract into the rotating tube 51 to adjust the position of the flexible tube 545. Both the outer walls of the rotating tube 51 and the telescopic tube 531 are provided with heat insulation layers, which can effectively prevent heat loss through the tube walls.

[0044] Furthermore, the drive motor 543, through the worm gear 542 and worm 544, can drive the extension frame 541 to rotate around the hinge point, thereby adjusting the final jet direction of the flexible tube 545.

[0045] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A portable hot air de-icing device, comprising a housing (10), an air source device (20), a gas heating device (30), and an air supply pipe (40) sequentially disposed within the housing (10), and an air nozzle positioning device (50) disposed on the outer wall of the housing (10) with its input end connected to the air supply pipe (40), characterized in that, The gas heating device (30) includes a heating box (31) disposed in the box body (10), an air flow control component (32) disposed in the heating box (31), and two heating components (33) symmetrically disposed on the inner wall of the heating box (31) with the air flow control component (32) as the axis. The exhaust end of the heating box (31) is connected to the gas supply pipe (40). The gas source device (20) includes two air inlet components (21) symmetrically arranged on both sides of the outer wall of the box (10), and a gas supply component (22) arranged inside the box (10) with its input end connected to the air inlet component (21) and its output end connected to the air inlet of the heating box (31). The heating element (33) is positioned corresponding to the air intake element (21) and can radiate heat to the air intake element (21).

2. The portable hot air de-icing device according to claim 1, characterized in that, The airflow control component (32) includes a micro motor (321) located on the top of the heating box (31) and having its actuating end penetrating through the heating box (31), a guide plate (322) located on the actuating end of the micro motor (321), and a plurality of first resistance heating plates (323) symmetrically located on the outer wall of the guide plate (322). The micro motor (321) is located at one end of the heating box (31) near the gas source device (20).

3. The portable hot air de-icing device according to claim 1, characterized in that, The heating component (33) includes a plurality of second resistance heating plates (331) arranged in a linear array on the inner wall of the heating box (31), and a heat radiation plate (332) arranged on the outer wall of the second resistance heating plates (331).

4. A portable hot air de-icing device according to claim 1, characterized in that, The air intake component (21) includes an air intake box (211) disposed on the outer wall of the box body (10), a metal filter (212) disposed on the inner wall of the air intake box (211), and a plurality of heat-conducting plates (213) connected at one end to the metal filter (212) and at the other end to the second resistance heating plate (331).

5. A portable hot air de-icing device according to claim 4, characterized in that, The air supply component (22) includes an air pump (221) located inside the box (10). The input end of the air pump (221) is connected to the top of the two air inlet boxes (211) through a pipe, and the output end of the air pump (221) is connected to the air inlet of the heating box (31) through a pipe.

6. A portable hot air de-icing device according to claim 1, characterized in that, The jet nozzle positioning device (50) includes a rotating tube (51) whose outer wall is hinged to the outer wall of the box body (10) via a bearing seat, an angle adjustment component (52) disposed on the outer wall of the box body (10) for adjusting the angle of the rotating tube (51), and a telescopic adjustment component (53) disposed at the end of the rotating tube (51).

7. A portable hot air de-icing device according to claim 6, characterized in that, The tilt adjustment component (52) includes a first bearing (521) disposed on the outer wall of the box (10), a second bearing (522) disposed on the outer wall of the rotating tube (51), and a first electric cylinder (523) disposed on the first bearing (521). The first electric cylinder (523) is connected to the second shaft seat (522) at its actuating end.

8. A portable hot air de-icing device according to claim 6, characterized in that, The telescopic adjustment component (53) includes a telescopic tube (531) with one end slidably connected to the inner wall of the rotating tube (51) and the other end extending to the outside of the rotating tube (51), and a second electric cylinder (532) disposed on the outer wall of the rotating tube (51) and whose actuating end is connected to the outer wall of the telescopic tube (531).

9. A portable hot air de-icing device according to claim 8, characterized in that, It also includes a jet nozzle angle adjustment component (54), which includes an extension frame (541) with one end hinged to the outer wall of the telescopic tube (531), a worm gear (542) disposed on the outer wall of the extension frame (541), a drive motor (543) disposed on the outer wall of the telescopic tube (531), a worm (544) disposed on the actuating end of the drive motor (543) and meshing with the worm gear (542), and a flexible tube (545) with one end connected to the telescopic tube (531) and the other end passing through the extension frame (541) and extending to the outside of the extension frame (541).

10. A portable hot air de-icing device according to claim 8, characterized in that, The bottom of the box (10) is provided with a remote control frame (11); Both the rotating tube (51) and the telescopic tube (531) have an insulation layer on their outer walls.

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