Cleaning drones

Abstract

To provide a cleaning drone which can prevent a drop in the temperature of high-temperature water heated by a boiler by using a lightweight hose with heat retention effect, can remove dirt with high-temperature water, can kill weeds and ivy by withering them, can remove mold, and can scrub off dirt by using a rotating brush. [Solution] The drone comprises a drone body, a controller for operating the drone body, a water discharge pipe mounted on the drone body, a water discharge nozzle at the end of one end of the water discharge pipe, a high-temperature, high-pressure pump equipped with a boiler for heating water to produce high-temperature water and a pump for pumping the high-temperature water, and a hose that connects the high-temperature, high-pressure pump to the other end of the water discharge pipe and has thermal insulation properties, and is characterized by being able to spray and discharge the high-temperature water from the water discharge nozzle to perform cleaning work at high altitudes.

Description

[Technical Field]

[0001] The present invention relates to a drone used for cleaning at high altitudes. [Background technology]

[0002] Traditionally, when cleaning at high altitudes, scaffolding was erected to prevent falls, and the work was then carried out, with the scaffolding dismantled after the job was completed. The higher the height and the larger the work area, the longer it took to assemble and dismantle the scaffolding. The entire process could take several days or even weeks, and the work could not be completed in a single day. While this isn't a problem if there is ample time between start and finish, cleaning attractions and monuments in theme parks, for example, requires nighttime work after the park closes, meaning there are only about four to six hours between start and finish. This creates a problem: time constraints mean that it's not possible to erect scaffolding, start work, and then dismantle it after the job is complete.

[0003] Therefore, prior art of drones has been disclosed for cleaning by spraying water from the sky (Reference 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] U.S. Patent No. 1,123,5890 Summary of the Invention [Problem to be solved by the invention]

[0005] The prior art of Patent Document 1 has the advantage of being able to use a drone to clean the exterior walls of buildings at high altitudes without the need to assemble or dismantle scaffolding. However, there is a problem in that spraying water at high altitudes results in low water pressure, making it difficult to remove stubborn dirt even with detergent.

[0006] The present invention solves these problems by using a lightweight hose with heat retention to prevent the temperature of the hot water heated in the boiler from dropping, and the hot water can remove dirt that was previously difficult to remove, and the hot water can also kill weeds that grow in gutters or on roofs and ivy that grows up walls, and remove mold.Furthermore, the present invention provides a cleaning drone that can scrub off dirt using a rotating brush. [Means for solving the problem]

[0007] In order to achieve the above object, the cleaning drone according to claim 1 of the present invention comprises a drone body, a controller for operating the drone body, a water discharge pipe mounted on the drone body, a water discharge nozzle provided at the tip of one end of the water discharge pipe, a high-temperature, high-pressure compressor equipped with a boiler for heating water to produce high-temperature water and a pump for pumping the high-temperature water, and a hose that connects the high-temperature, high-pressure compressor and the other end of the water discharge pipe and has heat retention properties, and performs cleaning work at high altitudes by spraying and discharging the high-temperature water from the water discharge nozzle. In the cleaning drone, the hose has a double structure with the inside made of silicone and the outside made of foamed polyethylene. It is characterized by:

[0008] By adopting this configuration, the drone is at least composed of a drone body, a controller that controls the flight of the drone body, a water discharge pipe attached to the drone body, a water discharge nozzle attached to one end of the water discharge pipe, a high-temperature, high-pressure pump equipped with a boiler that heats water to produce high-temperature water and a pump for pressurizing the high-temperature water, and a heat-retaining hose that connects the high-temperature, high-pressure pump to the other end of the water discharge pipe. With this configuration, high-temperature water can be produced by the high-temperature, high-pressure pump, and the high-temperature water can be pressurized and pumped into the water discharge pipe attached to the drone flying in the sky, where it can be sprayed from the water discharge nozzle at the tip of the pipe.

[0009] The cleaning drone of the present invention pumps high-temperature water and uses highly heat-retaining pipes to minimize temperature drop during pumping. This allows the water sprayed from the water nozzle to maintain a high temperature, and the high-temperature, high-pressure water can remove stubborn dirt and oily stains that were previously difficult to remove, improving cleaning effectiveness. Furthermore, the high-temperature water can denature proteins, thereby killing and eliminating weeds and ivy. It is also effective at removing mold, thoroughly removing black mold.

[0010] In addition, Clearly The cleaning drone comprises a drone body, a controller for operating the drone body, a water discharge pipe mounted on the drone body, a universal joint that is connected to one end of the water discharge pipe and can be freely changed in direction, a rotating brush that is connected to the universal joint and cleans the walls and roofs of buildings while spraying the high-temperature water, a pressure sensor that measures the contact pressure between the rotating brush and the building, a high-temperature, high-pressure pump that is equipped with a boiler that heats water to produce high-temperature water and a pump that pressure-feeds the high-temperature water, and a heat-insulating hose that connects the other end of the high-temperature, high-pressure pump to the water discharge pipe, and the pressure sensor measures the contact pressure between the rotating brush and the building to keep it below a predetermined contact pressure, and the rotating brush is used to perform cleaning work at high altitudes while spraying the high-temperature water. cormorant.

[0011] The cleaning drone of the present invention includes a universal joint between the rotating brush and the water discharge pipe, allowing the orientation of the rotating brush to be changed. The base of the rotating brush on the drone side is equipped with a pressure sensor that measures the pressure applied to the rotating brush. The pressure sensor prevents the rotating brush from applying more than a predetermined pressure. This allows the rotating brush to contact the building with an appropriate force, preventing interference with rotation and unnecessary wear of the brush bristles. This extends the life of the rotating brush and reduces the frequency of replacement. Furthermore, because the rotating brush contacts the building with an appropriate force, the cleaning drone is prevented from pressing too hard against the building, causing the drone's propeller to come into contact with the building, and also prevents damage to the water discharge pipe. This prevents the drone from crashing due to contact with the building. Furthermore, the rotating brush uses high-temperature water to scrub away dirt, making it possible to remove stubborn and oily dirt that was previously difficult to remove, thereby improving cleaning effectiveness. In addition, high-temperature water can denature proteins, so it can kill weeds and ivy, and mold can be completely removed by scrubbing with hot water.

[0012] In addition, Clearly The cleaning drone comprises a drone body, a controller for operating the drone body, a water discharge pipe mounted on the drone body, a water discharge nozzle with wheels that is connected to one end of the water discharge pipe and discharges high-temperature water to clean the walls and roofs of buildings, a pressure sensor that measures the contact pressure between the water discharge nozzle with wheels and the building, a high-temperature, high-pressure pump that is equipped with a boiler that heats water to produce high-temperature water and a pump that pressure-feeds the high-temperature water, and a heat-insulating hose that connects the high-temperature, high-pressure pump to the other end of the water discharge pipe, and the pressure sensor measures the contact pressure between the water discharge nozzle with wheels and the building to keep it below a predetermined contact pressure, and the water discharge nozzle with wheels is used to perform cleaning work at high altitudes while discharging the high-temperature water. cormorant.

[0013] The cleaning drone of the present invention is equipped with a water discharge pipe with wheels, allowing it to move over the surface of eaves, walls, and roofs of buildings while maintaining a constant distance, thereby maintaining a constant temperature drop of the high-temperature, high-pressure water as it comes into contact with the air. This facilitates temperature control of the high-temperature, high-pressure water during cleaning. Furthermore, the cleaning drone is equipped with a pressure sensor that measures the contact pressure between the tires of the water discharge nozzle with the building during movement. The pressure sensor prevents the tires from applying more than a predetermined pressure. Therefore, the tires contact the building with an appropriate amount of force, preventing the cleaning drone from pushing too hard against the building, causing the drone's propellers to come into contact with the building, and also preventing damage to the water discharge pipe. This prevents the drone from crashing after contacting the building. Furthermore, the use of high-temperature water makes it possible to remove stubborn dirt and oily stains that were previously difficult to remove, thereby improving cleaning effectiveness. Furthermore, high-temperature water can denature proteins, allowing it to wither and kill weeds and ivy. It is also effective in removing mold, thoroughly removing black mold.

[0014] In addition, Clearly The cleaning drone in question is ,before The hose is characterized by having a double structure with the inside made of silicone and the outside made of foamed polyethylene.

[0015] The cleaning drone of the present invention has a heat-insulating hose whose inner lining is made of silicone, making it lightweight, flexible, and highly resistant to pressure and heat, so that the hose does not deteriorate even when pumping high-temperature water. The outer lining is made of foamed polyethylene, making it lightweight, flexible, and highly resistant to heat, preventing the temperature of the high-temperature water from dropping and allowing it to be sprayed at the cleaning site. It also has excellent chemical resistance, protecting the hose from cleaning chemicals and acting as a buffer, so that the silicone inner hose will not be damaged even if the water-filled hose hits a wall or the ground.

[0016] Furthermore, the claims of the present invention 2 toThe cleaning drone in question is 1 The cleaning drone described above is characterized in that the water discharge pipe is equipped with a cleaning liquid injection device that can inject cleaning liquid by remote control.

[0017] The cleaning drone of the present invention can remotely operate the cleaning liquid injection device to inject cleaning liquid into the water discharge pipe, which, in combination with high-pressure, high-temperature water, can enhance the cleaning effect and shorten the time it takes to remove dirt, thereby reducing the drone's flight time.

[0018] Furthermore, the claims of the present invention 3 The cleaning drone according to the claim 1 In the cleaning drone described in claim 1, the boiler is an electric heating type, and the pump is an electric pump. 4 The cleaning drone according to the claim 1 The cleaning drone described above is characterized in that the boiler and the pump are oil-fired.

[0019] The use of an electric boiler and electric motor pump allows for quiet heating and pumping of water, so cleaning work can be done at night without causing a noise disturbance. Furthermore, since electric boilers and electric motor pumps only require a power source, there is no need to worry about running out of fuel, and they can be easily switched on and off. Furthermore, if an oil-fired boiler and pump are used, cleaning work can be done using a cleaning drone even if there is no power source nearby.

[0020] Furthermore, the claims of the present invention 5 The cleaning drone according to the claim 1 The cleaning drone according to claim 1 is characterized in that it is equipped with a camera. 6 The cleaning drone according to the claim 5 In the cleaning drone described in claim 1, the camera is an infrared camera. 7 The cleaning drone according to the claim5 The cleaning drone described above is characterized in that the drone body is equipped with lighting.

[0021] The cleaning drone of the present invention is equipped with a camera, so the area to be cleaned can be photographed with the camera and the image can be viewed on a monitor while cleaning, preventing areas from being left unwashed and allowing for water spraying according to the level of dirt, thereby reducing the use of excessive water and chemicals and improving work efficiency. Furthermore, even during cleaning work at night, the status of the area to be cleaned can be accurately grasped by using an infrared camera and lighting, allowing for reliable cleaning work, and flight to the cleaning site can be safely performed due to good visibility even at night. [Effects of the Invention]

[0022] From claim 1 of the present invention 7 The cleaning drone described in the document allows for easy cleaning work at high altitudes. Furthermore, high-temperature, high-pressure water can remove stubborn dirt and oily grime that was previously difficult to remove. Furthermore, when using a rotating brush, a pressure sensor ensures that the rotating brush contacts the structure with the appropriate force, preventing interference with rotation and unnecessary wear of the brush bristles. This also prevents damage to the drone's propeller and water discharge pipe, ultimately preventing the drone from crashing into the structure. Furthermore, high-temperature water denatures proteins, thereby killing and eliminating weeds and ivy. It is also highly effective at removing mold, resulting in a superior appearance and a clean finish. Furthermore, the use of an electric boiler and electric motor pump reduces noise even during nighttime work. Furthermore, the use of an oil-fired boiler and pump allows for cleaning work even without a nearby power source. Furthermore, the use of cameras, infrared cameras, and lighting allows for safe and reliable nighttime flight and cleaning work. In addition, the equipment costs are low and the work efficiency is high, so the cost per work area can be reduced. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a schematic perspective view of a drone body, a controller, a high-temperature, high-pressure pump, and the like of a cleaning drone according to an embodiment of the present invention. [Figure 2] FIG. 1 is a schematic perspective view of a cleaning drone body and its accessories according to an embodiment of the present invention. [Figure 3] FIG. 1 is a schematic perspective view of a cleaning drone body and its accessories according to another embodiment of the present invention. [Figure 4] FIG. 10 is a schematic perspective view of a cleaning drone body and its accessories according to yet another embodiment of the present invention. [Figure 5] FIG. 1A is a schematic perspective view of a rotating brush and a pressure sensor of a cleaning drone according to an embodiment of the present invention, and FIG. 1B is a schematic perspective view of a water-discharging nozzle with tires and a pressure sensor. [Figure 6] FIG. 1 is a schematic cross-sectional view of a hose of a cleaning drone according to an embodiment of the present invention. [Figure 7] FIG. 1 is a schematic perspective view showing a cleaning operation performed by a cleaning drone according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0024] As shown in Figures 1, 2, 3, and 4, the cleaning drone 1 of the present invention comprises at least a drone body 2 equipped with a water-discharge pipe 2-1, a controller 3 for operating the drone, a high-temperature, high-pressure pump 4 that produces high-temperature water and pumps it out as high-pressure water, and a hose 5 that passes the high-temperature water from the high-temperature, high-pressure pump 4 to the water-discharge pipe 2-1. Furthermore, the tip of the water-discharge pipe is equipped with a rotating brush 2-2, a tire-equipped nozzle 2-3, or a water-discharge nozzle 2-4.

[0025] As shown in Figures 2, 3, and 4, the drone body 2 has a water-discharge pipe 2-1 attached to an auxiliary rod-shaped plate that is placed between two legs of the drone body 2. The tip of the water-discharge pipe 2-1 can be equipped with a rotating brush 2-2, a tire-equipped nozzle 2-3, or a water-discharge nozzle 2-4. When a rotating brush is attached, it is preferable to provide a universal joint 2-10 between the water-discharge pipe 2-1 and the rotating brush 2-2, which allows the orientation of the bristles of the rotating brush 2-2 to be freely changed. In addition, the water-discharge pipe 2-1 can be freely rotated by a rotation device 2-7 attached to the base of the water-discharge pipe 2-1. This allows the rotating brushes 2-2 to be arranged in pairs vertically or horizontally, improving work efficiency. Furthermore, by bending the water-discharging nozzle 2-4, the rotation device 2-7 can be rotated to spray water in a cone shape centered on the bending point of the water-discharging nozzle 2-4 without changing the orientation of the drone body 2. The drone body 2 is also equipped with a cleaning liquid injection device 2-6, which can mix cleaning liquid into the high-temperature water at the base of the water-discharging pipe 2-1. This allows the cleaning liquid to further enhance the cleaning power.

[0026] Furthermore, as shown in Figures 2, 3, and 4, the drone body 2 is equipped with a camera 2-8 and a lighting device 2-9. This not only allows accurate confirmation of the degree of dirt and cleaning status of the cleaning area during cleaning work, whether daytime or nighttime, but also allows the drone body 2 to fly safely. An infrared camera may be used for the camera 2-8. The drone body 2 is preferably small, lightweight, and easy to handle, and capable of cleaning in narrow or complicated spaces, with dimensions of 810 x 670 x 430 mm (length x width x height) when deployed (excluding propellers), weighing 6.3 kg (with two batteries), a maximum payload of 2.7 kg, and an operational ceiling altitude of approximately 5,000 m. Furthermore, a payload of 2.7 kg or more is required.

[0027] The rotating brush 2-2 has one or more rotating brushes attached to its tip, which rotate due to the water flow of high-temperature, high-pressure water being discharged. The brush may also be equipped with a pressure sensor 2-5 on its axis of rotation, which has a measuring pin protruding toward the building 50.

[0028] The tire-equipped nozzle 2-3 has tires and can move by rolling over the eaves and roof of the building 50, so that the distance from the building 50 is constant and the temperature drop of the high-temperature, high-pressure water due to contact with the air can be kept constant. This makes it easier to control the temperature of the high-temperature, high-pressure water during cleaning, and makes it easier to determine the temperature setting for the high-temperature, high-pressure pump 4. In addition, the nozzle of the tire-equipped nozzle 2-3 can spray water with a constant width, so the high-temperature, high-pressure water can be sprayed evenly onto the building 50 while moving in a constant direction.

[0029] The water-discharge nozzle 2-4 is a nozzle for discharging high-temperature, high-pressure water onto the building 50. The water-discharge nozzle 2-4 is slightly bent at its base, so it can discharge water at an angle relative to the water-discharge pipe 2-1. In addition, a rotation device 2-7 is provided at the base of the water-discharge pipe 2-1, so it can discharge water in a cone shape centered around the bend in the water-discharge nozzle 2-4.

[0030] The pressure sensor 2-5 measures the contact pressure between the rotating brush 2-2 or the tires of the tire-mounted water-discharge nozzle 2-3 and the structure 50. When a predetermined pressure or more is applied to the rotating brush 2-2 or the tires of the tire-mounted water-discharge nozzle 2-3, a signal is sent to the controller 3, which sounds an alarm to alert the pilot 100 or restricts the controller 3 so that the drone body 2 does not move in a direction that would increase the pressure any further. Therefore, the rotating brush 2-2 contacts the structure 50 with an appropriate force, preventing the rotation of the rotating brush 2-2 from being impeded or the bristles of the rotating brush 2-2 from being worn down more than necessary. Furthermore, because the drone body 2 does not push the structure 50 with too much force, the drone's propellers are prevented from contacting the building and the water-discharge pipe is prevented from being damaged. This prevents the drone from crashing due to contact with the structure. The pressure sensor 2-5 may be attached to the base of the rotating brush 2-2 or the tire-equipped nozzle 2-3 to measure bending stress and strain, or it may measure stress from a measuring pin protruding toward the building on the rotation axis of each brush of the rotating brush 2-2, or it may measure bending stress and strain applied to the tire axis of the tire-equipped nozzle 2-3.

[0031] The controller 3 controls the drone body 2 and is equipped with a monitor that displays videos and images captured by the drone body's camera. Therefore, the image displayed on the monitor allows the operator to grasp the degree of dirt in the cleaning area and the cleaning status. The controller 3 is also equipped with a device for operating the rotation device 2-7. Furthermore, when the pressure sensor 2-5 detects a contact pressure greater than a predetermined value, a signal is sent to the controller 3, which sounds an alarm to alert the operator 100 or restricts the controller 3 to prevent the drone 2 from moving in a direction where the pressure increases. The cleaning liquid injection device 2-6 can also be activated by moving the lever on the controller 3. The controller 3 is preferably one with a maximum transmission distance of 8 km.

[0032] As shown in Figures 1 and 7, the high-temperature, high-pressure pump 4 heats water stored in the boiler 4-1 using an electric heater to a temperature between 60 and 98°C. The water is then pumped from the high-pressure pump through the hose 5 to the discharge pipe 2-1. When the high-pressure pump 4-2 is turned off, the drone body 2 flies at a high altitude, causing the high-temperature water accumulated in the hose 5 due to the difference in head pressure to flow back to the high-temperature, high-pressure pump 4 and be discharged through the drainage hose. This allows the high-temperature water to be safely discharged after work is completed. Alternatively, if a nearby building or generator serves as the power source 11 and the high-temperature, high-pressure pump 4 is far away, an electric drum 11-1 can be used to power the high-temperature, high-pressure pump 4. The high-temperature, high-pressure pump 4 is preferably one with a spray pressure of 2.0 to 10 MPa, a discharge rate of 3.0 to 6.8 L / min, an output of 1.4 kW, and 100 V. Oil-fired boilers and engine pumps can also be used, as long as they have the same spray pressure of 2.0 to 10 MPa, discharge rate of 3.0 to 6.8 L / min, and the ability to heat water to 60 to 98°C, just like electric boilers.

[0033] The hose 5 has a double structure, with the inner hose 5-1 being 1-3 mm thick and the outer hose 5-2 being 1-3 mm thick. The inner hose 5-1 is made of silicone, making it lightweight, flexible, and highly pressure- and heat-resistant, preventing deterioration even when pumping high-temperature water. The outer hose 5-2 is made of foamed polyethylene, making it lightweight, flexible, and highly heat-retaining, preventing the temperature of the high-temperature water from dropping and allowing it to be sprayed at the cleaning site. Its excellent chemical resistance protects the hose from cleaning chemicals and also acts as a buffer, preventing damage to the silicone inner hose even if the water-filled hose hits a wall or the ground. While hoses with an inner diameter of 15 mm or less can be used, an 8 mm inner diameter is preferred due to the weight of the water inside the hose 5. Using an 8 mm inner diameter hose 5 in combination with the drone body 2, controller 3, and high-temperature, high-pressure pump 4 allows cleaning work to be performed up to a height of approximately 40 m above the ground.

[0034] Next, an example of how to use the cleaning drone 1 according to the present invention will be described using Figures 1, 2, 3, 4, and 7. A drone body 2 and a controller 3 are prepared. Two plates are placed on two legs of the drone body 2, and a water discharge pipe 2-1 equipped with a rotation device 2-7 and a cleaning liquid injection device 2-6 is attached to the plate. A universal joint 2-10 and a rotating brush 2-2 are attached to the tip of the water discharge pipe 2-1, and a pressure sensor 2-5 is attached to the base of the rotating brush 2-2. A camera 2-8 and a light 2-9 are attached to the top of the drone body 2. A power supply 11 is connected to the power cord 4 of the high-temperature, high-pressure pump 4 via an electric drum 11-1. One end of a hose 5 is connected to the high-temperature, high-pressure pump 4, and the other end of the hose 5 is connected to the water discharge pipe 2-1 of the drone 2. Cleaning liquid is poured into the tank of the cleaning liquid injection device 6. Then, water is poured from the water source, faucet 10, into the high-temperature, high-pressure pumping machine 4 through another hose, and preparation is complete.

[0035] 3 and 7 , an example of how to use the cleaning drone 1 according to the present invention will be described. First, the high-temperature, high-pressure pump operator 101 activates the boiler 4-1 of the high-temperature, high-pressure pump 4 to heat water to 98°C. Then, the pilot 100 controls the drone body 2 to take off and fly it near the wall of a building 50 while checking the video from the camera 2-8 mounted on the drone body 2 on the monitor of the controller 3. The drone slowly approaches the wall 50 and brings the rotating brush 2-2 into contact with the wall. The pilot 100 then instructs the high-temperature, high-pressure pump operator 101 to activate the high-pressure pump 4-2 of the high-temperature, high-pressure pump 4 to pump high-temperature, high-pressure water to the rotating brush 2-2 through the hose 5 and the water discharge pipe 2-1. The hose 5 has a double structure consisting of an inner hose 5-1 made of silicone and an outer hose 5-2 made of foamed polyethylene, providing excellent heat retention. Therefore, the high-temperature water pumped at 98°C can be discharged while maintaining a temperature of 90°C or higher. The high-temperature, high-pressure water causes the brushes of the rotating brush 2-2 to rotate vigorously, scrubbing away dirt from the walls of the building 50. At this time, the controller 3 is operated to activate the cleaning liquid injector 2-6, which injects cleaning liquid into the high-temperature, high-pressure water. The high-temperature, high-pressure water and cleaning liquid can efficiently remove dirt from the walls of the building 50. The high-temperature, high-pressure water and the cleaning liquid can also completely remove black mold that has grown in the joints of the wall 50 using the high-temperature water and the rotating brush 2-2. After continuing the cleaning work, when the operator 100 confirms from the image on the monitor that a certain amount of dirt has been removed, he instructs the high-temperature, high-pressure pump operator 101, who then turns off the switch of the high-pressure pump 4-2 of the high-temperature, high-pressure pump 4. The high-temperature water that has accumulated in the hose 5 is then discharged from the drain hose of the high-temperature, high-pressure pump 4 due to the hydraulic head difference.

[0036] When the cleaning work is completed, the pilot 100 instructs the high-temperature, high-pressure pump operator 101 to turn off the boiler 4-1 and high-pressure pump 4-2 of the high-temperature, high-pressure pump 4 and drain the high-temperature water remaining in the water draining hose 5-2. Then, the pilot 100 lands the drone body 2. At this time, the assistant 102 winds up the hose 5 and bundles it to prevent it from getting tangled. After landing, the hose 5 is detached and put away to its original state, and the cleaning work is completed.

[0037] Using the cleaning drone 1 of the present invention, preparation, cleaning, and cleanup are simple and time-saving. Furthermore, the drone 1 can be used to easily perform cleaning and cleanup work at high altitudes. Furthermore, high-temperature, high-pressure water can be used to remove stubborn dirt and oily dirt that have traditionally been difficult to remove. Furthermore, the rotating brush 2-2 can be used, and since the rotating brush 2-2 contacts the structure with an appropriate force, it is possible to prevent interference with the brush rotation and unnecessary wear of the brush bristles. This extends the life of the rotating brush and reduces the frequency of replacement. Furthermore, since the rotating brush contacts the structure with an appropriate force, it is possible to prevent the cleaning drone from pressing too hard against the structure, causing the drone's propeller to come into contact with the building and damaging the water discharge pipe. This prevents the drone from coming into contact with the structure and crashing. In addition, high-temperature water can denature proteins, allowing for the withering and removal of weeds and ivy, and is very effective in removing mold, especially black mold, resulting in a very good appearance and finished cleaning job. Electrically heated boilers and electric motor pumps are used, even during nighttime work, so noise is minimal. Using oil-fired boilers and pumps also allows for cleaning work to be done even when there is no nearby power source. Using cameras, infrared cameras, and lighting also allows for safe and reliable nighttime flights and cleaning work. Equipment costs are low, and the high work efficiency reduces costs per work area. [Industrial Applicability]

[0038] It can be widely used in the field of cleaning. [Explanation of symbols]

[0039] 1: Cleaning drone 2: Drone body 2-1: Water discharge pipe 2-2: Rotating brush 2-3: Water nozzle with wheels 2-4: Water nozzle 2-5: Pressure sensor 2-6: Cleaning fluid injection device 2-7: Rotation device 2-8: Camera 2-9: Lighting 2-10: Universal joint 3: Controller 4: High-temperature, high-pressure pump 4-1: Boiler 4-2: High-pressure pump 4-3: Power cord 5: Hose 5-1: Inner hose (silicone) 5-2: Outer hose (made of foamed polyethylene) 10: Water source (faucet) 10-1: Water intake hose 11: Power supply 11-1: Electrical drum 50: Cleaning building 100: Operator 101: High-temperature, high-pressure pump operator 102: Auxiliary

Claims

1. a water-discharge pipe mounted on the drone body; a water-discharge nozzle at one end of the water-discharge pipe; a high-temperature, high-pressure compressor equipped with a boiler that heats water to produce high-temperature water and a pump that pumps the high-temperature water; and a heat-retaining hose that connects the high-temperature, high-pressure compressor to the other end of the water-discharge pipe, wherein the cleaning drone performs cleaning work at high altitudes by spraying and discharging the high-temperature water from the water-discharge nozzle, wherein the hose has a double structure with an inner hose made of silicone and an outer hose made of foamed polyethylene.

2. A cleaning drone as described in Claim 1, characterized in that it is equipped with a cleaning liquid injection device that can inject cleaning liquid into the water discharge pipe by remote control.

3. A cleaning drone as described in claim 1, characterized in that the boiler is electrically heated and the pump is an electric pump.

4. 2. The cleaning drone of claim 1, wherein the boiler and the pump are oil-powered.

5. A cleaning drone as described in claim 1, characterized in that it is equipped with a camera.

6. The cleaning drone according to claim 5, wherein the camera is an infrared camera.

7. The cleaning drone according to claim 5, characterized in that the drone body is provided with lighting.

Images