Air-cooled range extender

Abstract

An air-cooled range extender comprises a hanging plate, a fairing, cooling fans and an engine module, the fairing is arranged below the hanging plate and provided with a cooling air duct, the cooling fans blowing air oppositely are arranged at the upper end and the lower end of the fairing, and the engine in the fairing is forcibly cooled by blowing air oppositely. The fairing and the cooling fan are combined to blow air in the opposite direction to play a role in air collection and guide, so that airflow flows to the engine module in a more concentrated mode and then is dissipated and flows out of the hot air duct, the cooling effect is obviously improved, and the power can be improved by about 30%. The fixing plate is connected with the hanging plate through the buffer rubber, and the engine and generator module is fixedly installed below the fixing plate. The cooling fan and the fairing are relatively separated from the engine, vibration generated when the engine works can be weakened by the buffer rubber and then transmitted to the hanging plate, the cooling fan is prevented from vibrating along with the engine, the service life of the fan of the cooling system is prolonged, and rigidity of the cooling fan can be prevented from being transmitted to the unmanned aerial vehicle frame along with vibration of the engine. The overall vibration of the unmanned aerial vehicle is increased.

Description

Technical Field

[0001] The invention relates to the field of air-cooled range extenders for unmanned aerial vehicles, and in particular to an air-cooled range extender. Background Art

[0002] Drones are common aircraft in our daily life. To ensure the endurance, manufacturers need to install range extenders on drones to generate electricity. Hybrid drones need to be equipped with range extenders to provide electricity. Existing drone range extenders mainly include engines, generators, cooling systems and rectifier systems. The cooling system mainly includes air cooling or water cooling. To ensure the compactness of the overall structure formed by the combination of various components and the convenience of installation, a mounting frame needs to be set up to assemble the engine, generator, cooling system and rectifier system on the mounting frame in a suspended or mounted manner. During subsequent installation, you only need to connect the mounting frame to the drone frame.

[0003] During the operation of the range extender, the engine needs to be cooled to maintain efficient output power. The existing air-cooled range extender relies on a single cooling fan to blow air to the engine in one direction to dissipate heat. The heat dissipation effect is not obvious and the engine power cannot be increased. In addition, the engine, generator, and cooling fan are rigidly connected to the frame, which will generate vibrations during the operation of the engine. The generator and cooling fan will vibrate with the engine, reducing the life of the cooling fan, and generating a large rigid resonance that is transmitted to the drone frame, which will increase the overall vibration of the drone. This is insufficient. Summary of the invention

[0004] In order to solve the shortcomings of the above-mentioned existing air-cooled range extender, the present invention provides an air-cooled range extender, a fairing is arranged under the hanging plate, the fairing is provided with a heat dissipation air duct, and cooling fans for blowing air in opposite directions are arranged at the upper and lower ends of the fairing. The engine in the fairing is forced to dissipate heat by blowing air in opposite directions, and the heat dissipation effect is significantly improved. The cooling fan and the fairing are relatively separated from the engine, and the engine and generator module are installed and fixed under the fixing plate. The fixing plate is connected to the bracket by a buffer glue without a rigid connection, so as to avoid the cooling fan from vibrating with the engine, thereby improving the fan life of the cooling system, and preventing the generator and the cooling fan from vibrating with the engine and transmitting it to the UAV frame, thereby increasing the overall vibration or shaking of the UAV.

[0005] The present invention adopts the following technical scheme: an air-cooled range extender, comprising a hanging plate, a fairing, a cooling fan, and an engine module, wherein a fairing is arranged below the hanging plate, a plurality of hot air ducts are arranged in the middle of the fairing, and cooling fans for blowing air in opposite directions are arranged at the upper and lower ends of the fairing. The cooling fans at the upper and lower ends blow air in opposite directions to the engine in the fairing for forced heat dissipation, and the airflows blown in opposite directions by the cooling fans at the upper and lower ends of the fairing collide in the middle of the engine and are discharged outward from the hot air ducts of the fairing, and flow and diffuse to the surrounding areas in the middle of the engine. The forced blowing of the cooling fans in opposite directions makes the heat dissipation of the engine module more sufficient and faster. By combining the fairing with the opposite blowing of the cooling fan, the fairing can play a role in collecting and guiding the air, so that the airflow flows to the engine more concentratedly. The colliding airflow then flows out from the hot air duct and the middle of the engine. The heat dissipation effect is significantly improved compared to the conventional single fan one-way blowing. When used in engines of the same model, the heat dissipation effect is significantly improved, allowing the engine to operate at a higher power without being damaged by overheating, and the power can be increased by about 30%.

[0006] The blowing direction of the cooling fan is the same as the direction of the cooling fins of the engine. When the cooling fans above and below the fairing blow in opposite directions, the airflow can flow through the cooling fins of the engine better, taking away the heat generated when the engine is working, and the cooling effect is further improved.

[0007] A fixing plate is provided below the hanging plate, and the fixing plate is connected to the hanging plate by a buffering rubber. The engine and the generator module are mounted and fixed below the fixing plate. The engine is in a fairing, and the cooling fan and the fairing are relatively separated from the engine. The vibration generated when the engine is working will be weakened by the buffering rubber and then transmitted to the hanging plate, thereby preventing the cooling fan from vibrating with the engine, thereby improving the fan life of the cooling system, and preventing the cooling fan rigidity from vibrating with the engine and being transmitted to the UAV frame, thereby increasing the overall vibration or shaking of the UAV.

[0008] Buffer glue is provided at the four corners of the fixing plate, and the connecting screws pass through the through holes of the fixing plate and the buffer glue to fix the fixing plate under the hanging plate. The buffer glue is between the hanging plate and the fixing plate to form an integral frame, and the engine module is installed and fixed under the fixing plate.

[0009] The buffer glue is preferably a cylindrical colloid with a screw hole in the middle. The buffer glue can be rubber, spring glue or other colloids with buffering function.

[0010] Fairings are arranged on both sides below the hanging plate, and the lower ends of the fairings on the left and right sides are connected by a connecting plate, so that the hanging plate and the fairings on the left and right sides form a total fairing frame, and the engines on both sides of the engine module installed in the fixed plate are in the fairings on the left and right sides, and are relatively separated from the fairings without contact, while the overall engine module and the generator are inside the total fairing composed of the fairings on both sides. A connecting plate is provided to connect the fairings on the left and right sides, so that the fairings on both sides and the hanging plate constitute the overall frame of the range extender and form a large total fairing frame, thereby improving the overall stability of the range extender. A large hot air duct is formed between the connection of the two fairings. The engine module and the engines on both sides are in the total fairing frame. When the cooling fans of the left and right fairings blow air, the overall frame of the range extender collects forced convection cooling air, which plays a role in convection cooling for the engine, engine module and generator module, thereby better improving the overall heat dissipation performance of the range extender and enabling the engine module and the generator to exert more efficient output power.

[0011] A rectifier system is provided at the upper end of the hanging plate, and the rectifier system is connected to the generator of the range extender through a wire. The rectifier system supplies power to the UAV power system or battery.

[0012] The hanging plate is a hollow frame that can better enable air convection. The four corners of the hanging plate are provided with connecting frames, and the entire range extender can be fixed in the drone frame through the connecting frames to complete the installation of the range extender, which is convenient to install.

[0013] The beneficial effects of the present invention are as follows: 1. A fairing is provided below the hanging plate, the fairing is provided with a heat dissipation duct, and heat dissipation fans for blowing in opposite directions are provided at the upper and lower ends of the fairing, so as to force the heat dissipation of the engine in the fairing by blowing in opposite directions; 2. The fairing is provided in combination with the heat dissipation fan for blowing in opposite directions, and the fairing can play a role in collecting and guiding the wind, so that the airflow is more concentrated to flow to the engine module, and then flows out from the hot air duct, and the heat dissipation effect is significantly improved compared with the conventional single fan unidirectional blowing; 3. When applied to engines of the same model, the heat dissipation effect is significantly improved The engine can work at a higher power without being damaged by overheating, which can increase the power by about 30%; 4. The fixing plate is connected to the hanging plate through the buffer glue, and the engine and generator module are installed and fixed under the fixing plate. The cooling fan and the fairing are relatively separated from the engine. The vibration generated when the engine is working will be weakened by the buffer glue and then transmitted to the hanging plate, avoiding the cooling fan from vibrating with the engine and improving the fan life of the cooling system; 5. It can also prevent the rigidity of the cooling fan from vibrating with the engine and being transmitted to the UAV frame, increasing the overall vibration of the UAV. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional picture of the air-cooled range extender; Figure 2 This is an exploded view of the air-cooled range extender; Figure 3 This is a view of the air-cooled range extender frame; Figure 4 This is an exploded view of the air-cooled range extender frame; In the figure: 1. hanging plate, 2. connecting frame, 3. fairing, 4. hot air duct, 5. cooling fan, 6. fixing plate, 7. buffer rubber, 8. engine, 9. connecting plate, 10. rectification system, 11. cooling ribs. DETAILED DESCRIPTION

[0015] exist Figure 1-4 In the embodiment of the present application shown, an air-cooled range extender includes a hanging plate 1, a fairing 3, a cooling fan 5, and an engine module. A fairing 3 is arranged below the hanging plate 1, and a plurality of hot air ducts 4 are arranged in the middle of the fairing 3. Cooling fans 5 for blowing air in opposite directions are arranged at the upper and lower ends of the fairing 3. The cooling fans 5 at the upper and lower ends blow air in opposite directions to the engine 8 in the fairing for forced heat dissipation. The airflows blown in opposite directions by the cooling fans 5 at the upper and lower ends of the fairing 3 collide in the middle of the engine 8 and are discharged outward from the hot air duct 4 of the fairing 3, and flow and diffuse to the surrounding area in the middle of the engine 8. The forced blowing of the cooling fans 5 in opposite directions makes the heat dissipation of the engine module more sufficient and faster. By providing a fairing 3 and a cooling fan 5 for blowing in opposite directions, the fairing 3 can play a role in collecting and guiding the air, so that the airflow can flow to the engine 8 more concentratedly, and then the colliding airflows are emitted and discharged from the hot air duct 4 and the middle of the engine. The heat dissipation effect is significantly improved compared with the conventional single fan unidirectional blowing. When used in engines of the same model, it can increase the power by about 30%.

[0016] The blowing direction of the cooling fan 5 is the same as the direction of the cooling fins 11 of the engine 8. When the cooling fans 5 above and below the fairing 3 blow in opposite directions, the airflow can flow through the cooling fins 11 of the engine 8 better, taking away the heat generated when the engine is working, and the heat dissipation effect is further improved.

[0017] A fixing plate 6 is provided below the hanging plate 1, and the fixing plate 6 is connected to the hanging plate 1 through a buffer rubber 7. The engine 8 and the generator module are mounted and fixed below the fixing plate 6, and the engine 8 is in the fairing 3. The cooling fan 5 and the fairing 3 are relatively separated from the engine 8. The vibration generated when the engine 8 is working will be weakened by the buffer rubber 7 and then transmitted to the hanging plate 1, so as to avoid the cooling fan 5 from vibrating with the engine 8, thereby improving the fan life of the cooling system, and avoiding the cooling fan 5 from rigidly following the vibration of the engine 8 and transmitting it to the UAV frame, thereby increasing the vibration or shaking of the entire UAV.

[0018] Buffer glue 7 is provided at the four corners of the fixing plate 6, and the connecting screws pass through the through holes of the fixing plate 6 and the buffer glue 7 to fix the fixing plate 6 under the hanging plate 1. The buffer glue 7 is located between the hanging plate 1 and the fixing plate 6 to form an integral frame, and the engine module is installed and fixed under the fixing plate 6.

[0019] The buffer glue 7 is preferably a cylindrical colloid with a screw hole in the middle. The buffer glue 7 can be rubber, spring glue or other colloids with buffering function.

[0020] Fairings 3 are provided on both sides below the hanging plate 1, and the lower ends of the fairings 3 on the left and right sides are connected by a connecting plate 9, so that the hanging plate 1 and the fairings 3 on the left and right sides form a total fairing frame, and the engines 8 on both sides of the engine module installed in the fixing plate 6 are located in the fairings 3 on the left and right sides, and are relatively separated from the fairings 3 without contact, while the overall engine module and the generator are located inside the total fairing composed of the fairings 3 on both sides. By providing a connecting plate 9 to connect the fairings 3 on the left and right sides, the fairings 3 on both sides and the hanging plate 1 constitute the overall frame of the range extender and form a large total fairing frame, thereby improving the overall stability of the range extender. A large hot air duct 4 is formed between the connection of the two fairings 3. The engine module and the engines 8 on both sides are in the total fairing frame. When the cooling fans 5 of the left and right fairings 3 blow air, the overall frame of the range extender collects forced convection cooling air, which plays a role in convection heat dissipation for the engine 8, the engine module, and the generator module, thereby better improving the overall heat dissipation performance of the range extender and enabling the engine module and the generator to exert more efficient output power.

[0021] A rectifier system 10 is disposed at the upper end of the hanging plate 1. The rectifier system 10 is connected to the generator of the range extender through a wire. The rectifier system 10 supplies power to the UAV power system or battery.

[0022] The hanging plate 1 is a hollow frame that can better enable air convection. The four corners of the hanging plate 1 are provided with connecting frames 2, and the entire range extender can be fixed in the drone frame through the connecting frames 2 to complete the installation of the range extender, which is convenient to install.

[0023] The range extender of the present application is not limited to being installed in a drone for use, but can also be used as an external range extender to charge a rechargeable battery, or as a generator, etc.

[0024] The basic principles, main features and advantages of the present invention are shown and described above. The present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention.

Claims

1. An air-cooled range extender, comprising a hanging plate, a fairing, a cooling fan, and an engine module, characterized in that: A fairing is arranged below the hanging plate, a plurality of hot air ducts are arranged in the middle of the fairing, and cooling fans for blowing air in opposite directions are arranged at the upper and lower ends of the fairing. The cooling fans at the upper and lower ends blow air in opposite directions to the engine in the fairing for forced heat dissipation. The airflows blown in opposite directions by the cooling fans collide in the middle of the engine and are discharged outward from the hot air ducts of the fairing, and flow and diffuse to the surrounding areas in the middle of the engine. The opposite forced blowing of the cooling fans enables better heat dissipation of the engine module.

2. The air-cooled range extender according to claim 1, characterized in that: The blowing direction of the cooling fan is the same as the direction of the cooling fins of the engine, so the airflow can flow through the cooling fins of the engine better and take away the heat generated when the engine is working.

3. An air-cooled range extender according to claim 1 or 2, characterized in that: A fixing plate is arranged below the hanging plate, and the fixing plate is connected to the hanging plate through a buffer rubber. The engine and the generator module are installed and fixed below the fixing plate. The engine is in the fairing, and the cooling fan and the fairing are relatively separated from the engine.

4. The air-cooled range extender according to claim 3, characterized in that: Buffer glue is provided at the four corners of the fixing plate below the hanging plate, and the connecting screws pass through the through holes of the fixing plate and the buffer glue to fix the fixing plate below the hanging plate. The buffer glue is located between the hanging plate and the fixing plate to form an integral frame, and the engine module is located below the fixing plate.

5. The air-cooled range extender according to claim 4, characterized in that: The buffer colloid is preferably a cylindrical colloid.

6. The air-cooled range extender according to claim 4, characterized in that: Fairings are arranged on both sides below the hanging plate, and the lower ends of the fairings on the left and right sides are connected by a connecting plate, so that the hanging plate and the fairings on the left and right sides form a total fairing frame, and the engines on both sides of the engine module installed in the fixed plate are in the fairings on the left and right sides, and are relatively separated from the fairings, and the overall engine module and the generator are inside the total fairing composed of the fairings on both sides.

7. The air-cooled range extender according to claim 6, characterized in that: A rectifier system is provided at the upper end of the hanging plate, and the rectifier system is connected to the generator of the range extender through a wire. The rectifier system supplies power to the UAV power system or battery.

8. The air-cooled range extender according to claim 7, characterized in that: The hanging plate is a hollow frame.

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