Aerial engine power air nozzle of unmanned aerial vehicle

Abstract

The utility model discloses an unmanned aerial vehicle aeroengine power air nozzle. The air nozzle comprises a main body and an air nozzle, wherein a coaxial through hole is formed in the main body; the air inlet joint is arranged at the tail of the main body and communicated with the head of the through hole; the core part is arranged in the main body, the outer surface of the tail part is seamlessly attached to the inner wall of the through hole, and a vent groove communicated with the head part of the through hole is formed in the core part; a plurality of air outlet holes are formed in the tail part of the core part; the air outlet is communicated with the vent groove; the reset spring sleeves the middle part of the core part and is positioned in the through hole, and two ends respectively abut against the outer surface of the core part and the inner wall of the through hole; and the control coil sleeves the middle part of the main body and directly faces the core part. According to the heavy oil atomization device, heavy oil to be combusted can be effectively atomized, so that the heavy oil can be fully mixed with air, the combustion efficiency is improved, the combustion stability is improved, and sufficient, stable and continuous power is provided for an aircraft engine.

Description

Technical Field

[0001] The utility model relates to the field of heavy oil atomization of aviation engines, in particular to an aero-engine power jet nozzle for unmanned aerial vehicles. Background Art

[0002] UAV aviation engines generally use ordinary fuel as fuel, but special-purpose UAVs need to use heavy oil as fuel. Compared with ordinary gasoline and diesel liquid fuels, heavy oil has completely different combustion requirements and physical and chemical properties, especially when used in aircraft engines. Heavy oil combustion needs to be atomized as much as possible so that it can be fully mixed with air to achieve efficient combustion and work. At present, there is no device in China that can effectively atomize heavy oil suitable for the field of aircraft engines. Utility Model Content

[0003] In view of the above-mentioned defects of the prior art, the purpose of the utility model is to provide a UAV aero-engine power jet nozzle, which can effectively atomize the heavy oil to be burned, so that the heavy oil can be fully mixed with the air, thereby improving the combustion efficiency and stability, thereby providing sufficient, stable and continuous power for the aero-engine.

[0004] The purpose of the utility model is achieved through such technical solution:

[0005] An aero-engine powered jet nozzle for a UAV, comprising:

[0006] A main body, wherein a coaxial through hole is provided inside;

[0007] An air inlet connector is provided at the rear of the main body and communicated with the head of the through hole;

[0008] The core is arranged in the main body, the outer surface of the tail is seamlessly attached to the inner wall of the through hole, and the core is provided with a ventilation groove connected to the head of the through hole; the tail of the core is provided with a plurality of air outlets; the air outlets are connected to the ventilation grooves;

[0009] A return spring is sleeved on the middle of the core and is located in the through hole, with two ends respectively abutting against the outer surface of the core and the inner wall of the through hole;

[0010] The control coil is sleeved on the middle part of the main body and faces the core. When the control coil is working, the control core moves toward the tail of the through hole, and the air outlet is connected with the outside. When the control coil stops working, the core is reset under the action of the reset spring, and the air outlet is closed by the inner wall of the through hole.

[0011] Furthermore, the control coil comprises:

[0012] The skeleton is in the shape of a round tube and is covered on the main body;

[0013] Winding, winding around the frame;

[0014] The protective cover is in the shape of a round tube and is placed outside the winding wire;

[0015] Two covers are flange-shaped and are sleeved on the main body and located on both sides of the winding. The two covers, the frame and the protective cover form a closed tubular space, and the winding is located in the tubular space.

[0016] Furthermore, the control coil also includes an external connection part, the upper part of which is covered on the outside of the protective cover, and the lower part is provided with a plug part, and two metal plug rods are arranged in the plug part, and the two metal plug rods are connected to the two ends of the winding.

[0017] Furthermore, the air inlet connector comprises:

[0018] The inlet portion is located in the rear part of the main body, and the outer wall is seamlessly connected to the inner wall of the rear part of the through hole of the main body; the inlet portion is provided with an air inlet groove, and the bottom of the air inlet groove is provided with an air inlet hole penetrating the bottom of the inlet portion;

[0019] The ear part is in a circular shape, and the inner side surface is seamlessly connected with the tail of the entry part; the outer contour of the ear part protrudes out of the outer contour of the main body.

[0020] Furthermore, the ear is provided with a plurality of button holes evenly arranged in a circle around the axis of the ear; the inner wall of the air inlet groove of the inlet is provided with strip-shaped slot holes directly facing the button holes; and the strip-shaped slot holes are connected to the button holes.

[0021] Furthermore, the through holes include a tail hole, a middle hole, and a head hole from the tail to the head; the tail hole, the middle hole, and the head hole are all cylindrical and coaxially arranged; the diameter of the tail hole is larger than that of the middle hole; the diameter of the middle hole is larger than that of the head hole; the outer surface of the tail of the core is seamlessly fitted with the inner wall of the head hole; and the spring is arranged in the middle hole and the tail hole.

[0022] Furthermore, the core comprises:

[0023] The tail component is arranged in the tail hole, and the outer surface is in contact with the inner wall of the tail hole; the tail component is provided with a coaxial through-going tail hole; the outer cylindrical surface and the head end surface of the tail component are provided with an air pressure balance groove connecting the tail end of the tail hole and the middle hole;

[0024] The core rod has a tail portion inserted into the tail hole of the tail component, and a head portion passing through the middle hole and located in the head hole. The outer surface of the head portion of the core rod is seamlessly fitted with the inner wall of the head hole. The core rod is provided with a coaxial through-going core hole. The spring sleeve is wrapped around the outer surface of the core rod and located in the middle hole and the tail hole.

[0025] An air outlet piece is arranged at the head end of the core rod to close the head end of the core rod; a plurality of air outlet holes are arranged on the air outlet piece in a uniform circle around its axis; when the control coil is working, the air outlet piece is controlled to move toward the tail of the through hole, and the air outlet holes are connected to the outside; when the control coil stops working, the air outlet piece is reset under the action of a reset spring, and the air outlet holes are closed by the inner wall of the through hole.

[0026] Furthermore, the tail hole is funnel-shaped, with the larger opening end facing the air inlet joint; the core rod is inserted into the straight hole of the tail hole; the head end of the tail component is provided with a limiting groove of the same diameter as that of the middle hole, and one end of the return spring is located in the limiting groove;

[0027] The head end of the core rod is provided with a raised ring, and the outer cylindrical surface of the raised ring is seamlessly fitted with the inner wall of the head hole; there is a gap between the outer surface of the middle part of the core rod and the inner walls of the middle hole and the head hole;

[0028] Furthermore, the head of the head hole is in the shape of an expanded trumpet; the air outlet member includes a constricted neck and an expanded neck in sequence from the tail to the head; the outer surface of the expanded neck, the outer surface of the constricted neck and the inner wall of the head hole form an annular cavity with a triangular cross section;

[0029] The air outlet is arranged on the neck portion and communicates with the annular cavity;

[0030] The surface inclination rate of the expanded neck portion is the same as the inclination rate of the inner wall of the head portion of the head hole; and the maximum diameter of the expanded neck portion is smaller than the maximum inner diameter of the head portion of the head hole.

[0031] Furthermore, two annular grooves are provided on the head of the main body; the air intake joint, the control coil and the tail of the main body form an annular groove, and an annular sealing ring is provided in the annular groove.

[0032] Due to the adoption of the above technical solution, the utility model has the following advantages:

[0033] The position of the core in the main body is controlled by the control coil, so that the air outlet on the core and the main body are closed and separated, thereby realizing the control of air intake. At the same time, the high-speed airflow formed by the air outlet impacts the heavy oil and fully disperses the heavy oil. The reset spring cooperates with the control coil to realize the automatic reset of the core after power failure, and the air outlet is closed. The whole structure is ingenious and simple, with high stability.

[0034] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and study, or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings of the present utility model are as follows:

[0036] Figure 1 This is a first stereoscopic schematic diagram of the UAV aero-engine power jet nozzle in this embodiment.

[0037] Figure 2 This is a second stereoscopic schematic diagram of the UAV aero-engine power jet nozzle in this embodiment.

[0038] Figure 3 It is a front view schematic diagram of the UAV aero-engine power jet nozzle in this embodiment.

[0039] Figure 4 for Figure 3 Schematic diagram of the structure at the AA section.

[0040] Figure 5 for Figure 4 Enlarged structural diagram at B in the middle.

[0041] Figure 6 for Figure 4 Enlarged structural diagram at point C in the middle.

[0042] Figure 7 It is a top view schematic diagram of the UAV aero-engine power jet nozzle in this embodiment.

[0043] Figure 8 for Figure 7 Schematic diagram of the structure of the DD section.

[0044] Fig. 9 for Figure 8 Enlarged structural diagram at E in the middle.

[0045] In the figure: 1. main body; 11. annular groove; 21. entry; 211. air inlet groove; 212. air inlet hole; 213. strip groove hole; 22. ear; 221. buckle hole; 31. tail component; 311. tail hole; 312. limit groove; 313. air pressure balance groove; 32. core component; 321. core hole; 322. raised ring; 331. contracted neck; 3311. air outlet hole; 332. expanded neck; 333. annular cavity; 4. reset spring; 51. skeleton; 52. winding; 53. protective cover; 54. cover; 55. external component 61. tail hole; 62. middle hole; 63. head hole; 7. annular groove; 8. annular sealing ring. DETAILED DESCRIPTION

[0046] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0047] Example:

[0048] like Figures 1 to 9 As shown, the UAV aero-engine jet nozzle includes:

[0049] The main body 1 is provided with a coaxial through hole inside;

[0050] The air inlet connector is arranged at the rear of the main body 1 and communicates with the head of the through hole;

[0051] The core is arranged in the main body 1, and the outer surface of the tail is seamlessly fitted with the inner wall of the through hole. The core is provided with a ventilation groove connected with the head of the through hole; a plurality of air outlet holes 3311 are provided on the tail of the core; the air outlet holes 3311 are connected with the ventilation groove; the core is made of magnetic induction material;

[0052] A return spring 4 is sleeved on the middle of the core and located in the through hole, with two ends respectively abutting against the outer surface of the core and the inner wall of the through hole;

[0053] The control coil is sheathed in the middle of the main body 1, facing the core; when the control coil is working, the control core moves toward the tail of the through hole, and the air outlet 3311 is connected to the outside; when the control coil stops working, the core is reset under the action of the reset spring 4, and the air outlet 3311 is closed by the inner wall of the through hole.

[0054] In this embodiment, the control coil includes:

[0055] The frame 51 is in a round tube shape and is covered on the main body 1;

[0056] The winding wire 52 is externally wound on the frame 51;

[0057] The protective cover 53 is in a round tube shape and is placed outside the winding 52;

[0058] Two covers 54 are flange-shaped and are mounted on the main body 1 and are located on both sides of the winding 52. The two covers 54, the frame 51 and the protective cover 53 form a closed tubular space, and the winding 52 is located in the tubular space.

[0059] The frame 51 , the protective cover 53 and the cover 54 can better protect the winding 52 and ensure the normal operation of the winding 52 .

[0060] In this embodiment, the control coil also includes an external component 55, the upper part of which is covered on the outside of the protective cover 53, and the lower part is provided with a plug component, and two metal rods (not shown in the figure) are provided in the plug component, and the two metal rods are connected to the two ends of the winding 52.

[0061] The device is electrically connected to the power supply terminal through the external connection member 55 and installed at the same time.

[0062] In this embodiment, the air inlet connector includes:

[0063] The inlet 21 is located in the rear part of the main body 1, and the outer wall is seamlessly connected to the inner wall of the rear part of the through hole of the main body 1; the inlet 21 is provided with an air inlet groove 211, and the bottom of the air inlet groove 211 is provided with an air inlet hole 212 penetrating the bottom of the inlet 21;

[0064] The ear portion 22 is in a circular shape, and the inner side surface is seamlessly connected to the tail of the entry portion 21 ; the outer contour of the ear portion 22 protrudes from the outer contour of the main body 1 .

[0065] The outer wall of the inlet portion 21 is connected and fixed to the head of the through hole, and the gas is guided into the through hole through the air inlet groove 211 and the air inlet hole 212; the ear portion 22 serves as a connecting buckle structure of the external joint.

[0066] In this embodiment, the ear portion 22 is provided with a plurality of buckle holes 221 evenly arranged in a circle around the axis of the ear portion 22 ; the inner wall of the air inlet groove 211 of the inlet portion 21 is provided with a strip-shaped slot 213 directly opposite to the buckle hole 221 ; the strip-shaped slot 213 is connected to the buckle hole 221 .

[0067] The buckle hole 221 can form a locking structure with the external connector to ensure the stability of the connection, and the strip slot 213 can be locked with the plug-in block of the external connector, so that the external connector can be quickly aligned with the buckle hole 221 to complete the locking.

[0068] In this embodiment, the through holes include a tail hole 61, a middle hole 62, and a head hole 63 from the tail to the head; the tail hole 61, the middle hole 62 and the head hole 63 are all cylindrical and coaxially arranged; the diameter of the tail hole 61 is larger than that of the middle hole 62; the diameter of the middle hole 62 is larger than that of the head hole 63; the outer surface of the tail of the core is seamlessly fitted with the inner wall of the head hole 63; the spring is arranged in the middle hole 62 and the tail hole 61.

[0069] In this embodiment, the core comprises:

[0070] The tail component 31 is arranged in the tail hole 61, and its outer surface is in contact with the inner wall of the tail hole 61; the tail component 31 is provided with a coaxial through tail hole 311; the outer cylindrical surface and the head end surface of the tail component 31 are provided with an air pressure balance groove 313 connecting the tail end of the tail hole 61 and the middle hole 62;

[0071] The core rod has a tail portion inserted into the tail hole 311 of the tail component 31, and a head portion passing through the middle hole 62 and located in the head hole 63. The outer surface of the head portion of the core rod is seamlessly fitted with the inner wall of the head hole 63. The core rod is provided with a coaxial through-going core hole 321. The spring sleeve is wrapped around the outer surface of the core rod and located in the middle hole 62 and the tail hole 61.

[0072] The air outlet piece is arranged at the head end of the core rod to close the head end of the core rod; the air outlet piece is provided with a plurality of air outlet holes 3311 arranged uniformly in a circle around its axis; when the control coil is working, the air outlet piece is controlled to move toward the tail of the through hole, and the air outlet holes 3311 are connected to the outside; when the control coil stops working, the air outlet piece is reset under the action of the reset spring 4, and the air outlet holes 3311 are closed by the inner wall of the through hole.

[0073] The tail hole 311, the core hole 321 and the air outlet hole 3311 form a venting groove for gas flow. The tail component 31 is acted upon by the winding wire 52 to provide displacement power, the core rod portion serves as a structure for guiding gas flow, and the air outlet component controls the air outlet. The balancing air hole balances the pressure in the space where the return spring 4 is located during the compression and extension process of the return spring 4.

[0074] In this embodiment, the tail hole 311 is funnel-shaped, with the larger opening end facing the air inlet joint; the core rod is inserted into the straight hole of the tail hole 311; the head end of the tail component 31 is provided with a limiting groove 312 of the same diameter as the middle hole 62, and one end of the return spring 4 is located in the limiting groove 312;

[0075] The head end of the core rod is provided with a raised ring 322, and the outer cylindrical surface of the raised ring 322 is seamlessly fitted with the inner wall of the head hole 63; there is a gap between the outer surface of the middle part of the core rod and the inner walls of the middle hole 62 and the head hole 63;

[0076] The tail hole 311 guides the gas in the forward direction as much as possible, and limits the reset spring 4 through the limiting groove 312 to ensure the stability of the elastic force direction of the reset spring 4. The raised ring 322 serves as a sliding hard sealing structure to ensure air tightness.

[0077] In this embodiment, the head of the head hole 63 is in the shape of an expanded trumpet; the air outlet member includes a constricted neck 331 and an expanded neck 332 from the tail to the head; the outer surface of the expanded neck 332, the outer surface of the constricted neck 331 and the inner wall of the head hole 63 form an annular cavity 333 with a triangular cross section;

[0078] The air outlet 3311 is arranged on the neck portion 331 and communicates with the annular cavity 333;

[0079] The surface inclination rate of the expanded neck portion 332 is the same as the inclination rate of the inner wall of the head portion of the head hole 63 ; the maximum diameter of the expanded neck portion 332 is smaller than the maximum inner diameter of the head portion of the head hole 63 .

[0080] The triangular annular cavity 333 can guide the high-pressure gas discharged from the gas outlet 3311, so that the gas becomes a high-pressure airflow after being discharged, and through the expansion neck 332 matching the head structure of the head hole 63, the high-pressure gas can be scattered and sprayed out in a ring shape, which can better impact the heavy oil and achieve the purpose of atomizing the heavy oil.

[0081] In this embodiment, two annular grooves 11 are provided on the head of the main body 1 ; the air intake connector, the control coil and the tail of the main body 1 form an annular groove 7 , and annular sealing rings 8 are provided in the annular grooves 7 and 11 .

[0082] The sealing rings in the two annular grooves 11 at the head of the main body 1 can be seamlessly connected to the inner wall of the heavy oil atomization chamber to ensure the airtightness of the atomization chamber. The annular groove 7 can form an effective seal with the external joint to ensure the airtightness of the air intake.

[0083] The UAV aero-engine jet nozzle of this embodiment is used as follows: the head of the main body 1 is inserted into the heavy oil atomization chamber, and its sealing is ensured by the annular sealing ring 8. Then the external connector is connected to the tail of the main body 1 to provide a high-pressure gas source to the device.

[0084] When the heavy oil needs to be atomized, the winding 52 is energized to generate a magnetic field, which drives the tail component 31 to move toward the head end of the main body 1 under the action of the magnetic field, and the return spring 4 is compressed. At this time, the air outlet piece extends outward, and the expansion neck 332 is separated from the inner wall of the head hole 63 to form a gap. At this time, high-pressure gas enters the gap through the tail hole 311, the core hole 321, and the air outlet hole 3311, and is ejected to impact the heavy oil and atomize the heavy oil.

[0085] When the atomization effect of heavy oil needs to be adjusted, the extension of the outlet piece can be controlled by adjusting the current of the winding 52 to control the magnetic field. When the heavy oil atomization is not needed (the engine is shut down), the winding 52 can be powered off, and the tail piece 31 is reset under the action of the reset spring 4, and the outlet piece and the inner wall of the head hole 63 are seamlessly fitted again to form a seal.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A UAV aero-engine powered jet nozzle, characterized in that: include: A main body, wherein a coaxial through hole is provided inside; An air inlet connector is provided at the rear of the main body and communicated with the head of the through hole; The core is arranged in the main body, the outer surface of the tail is seamlessly attached to the inner wall of the through hole, and the core is provided with a ventilation groove connected to the head of the through hole; the tail of the core is provided with a plurality of air outlets; the air outlets are connected to the ventilation grooves; A return spring is sleeved on the middle of the core and is located in the through hole, with two ends respectively abutting against the outer surface of the core and the inner wall of the through hole; The control coil is sleeved on the middle part of the main body and faces the core. When the control coil is working, the control core moves toward the tail of the through hole, and the air outlet is connected with the outside. When the control coil stops working, the core is reset under the action of the reset spring, and the air outlet is closed by the inner wall of the through hole.

2. The UAV aero-engine jet nozzle according to claim 1, characterized in that: The control coil comprises: The skeleton is in the shape of a round tube and is covered on the main body; Winding, winding around the frame; The protective cover is in the shape of a round tube and is placed outside the winding wire; Two covers are flange-shaped and are sleeved on the main body and located on both sides of the winding. The two covers, the frame and the protective cover form a closed tubular space, and the winding is located in the tubular space.

3. The UAV aero-engine jet nozzle according to claim 2, characterized in that: The control coil also includes an external connector, the upper part of which is covered on the outside of the protective sleeve, and the lower part is provided with a plug component, and two metal plug rods are arranged in the plug component, and the two metal plug rods are connected to the two ends of the winding.

4. The UAV aero-engine jet nozzle according to claim 1, characterized in that: The air inlet connector comprises: The inlet portion is located in the rear part of the main body, and the outer wall is seamlessly connected to the inner wall of the rear part of the through hole of the main body; the inlet portion is provided with an air inlet groove, and the bottom of the air inlet groove is provided with an air inlet hole penetrating the bottom of the inlet portion; The ear part is in a circular shape, and the inner side surface is seamlessly connected with the tail of the entry part; the outer contour of the ear part protrudes out of the outer contour of the main body.

5. The UAV aero-engine jet nozzle according to claim 4, characterized in that: The ear is provided with a plurality of button holes which are evenly arranged in a circle around the axis of the ear; the inner wall of the air inlet groove of the inlet is provided with strip-shaped slot holes which are directly opposite to the button holes; and the strip-shaped slot holes are connected with the button holes.

6. The UAV aero-engine jet nozzle according to claim 1, characterized in that: The through holes include a tail hole, a middle hole, and a head hole from the tail to the head; the tail hole, the middle hole, and the head hole are all cylindrical and coaxially arranged; the diameter of the tail hole is larger than that of the middle hole; the diameter of the middle hole is larger than that of the head hole; the outer surface of the tail of the core is seamlessly fitted with the inner wall of the head hole; the spring is arranged in the middle hole and the tail hole.

7. The UAV aero-engine powered jet nozzle according to claim 6, characterized in that: The core comprises: The tail component is arranged in the tail hole, and the outer surface is in contact with the inner wall of the tail hole; the tail component is provided with a coaxial through-going tail hole; the outer cylindrical surface and the head end surface of the tail component are provided with an air pressure balance groove connecting the tail end of the tail hole and the middle hole; The core rod has a tail portion inserted into the tail hole of the tail component, and a head portion passing through the middle hole and located in the head hole. The outer surface of the head portion of the core rod is seamlessly fitted with the inner wall of the head hole. The core rod is provided with a coaxial through-core hole. The spring is sheathed on the outer surface of the core rod and located in the middle hole and the tail hole. An air outlet piece is arranged at the head end of the core rod to close the head end of the core rod; a plurality of air outlet holes are arranged on the air outlet piece in a uniform circle around its axis; when the control coil is working, the air outlet piece is controlled to move toward the tail of the through hole, and the air outlet holes are connected to the outside; when the control coil stops working, the air outlet piece is reset under the action of a reset spring, and the air outlet holes are closed by the inner wall of the through hole.

8. The UAV aero-engine jet nozzle according to claim 7, characterized in that: The tail hole is funnel-shaped, with the larger opening end facing the air inlet joint; the core rod is inserted into the straight hole of the tail hole; the head end of the tail component is provided with a limiting groove of the same diameter as that of the middle hole, and one end of the return spring is located in the limiting groove; The head end of the core rod is provided with a raised ring, the outer cylindrical surface of the raised ring is seamlessly fitted with the inner wall of the head hole; there is a gap between the outer surface of the middle part of the core rod and the inner walls of the middle hole and the head hole.

9. The UAV aero-engine jet nozzle according to claim 7, characterized in that: The head of the head hole is in the shape of an expanded trumpet; the air outlet member includes a constricted neck and an expanded neck in sequence from the tail to the head; the outer surface of the expanded neck, the outer surface of the constricted neck and the inner wall of the head hole form an annular cavity with a triangular cross section; The air outlet is arranged on the neck portion and communicates with the annular cavity; The surface inclination rate of the expanded neck portion is the same as the inclination rate of the inner wall of the head portion of the head hole; and the maximum diameter of the expanded neck portion is smaller than the maximum inner diameter of the head portion of the head hole.

10. The UAV aero-engine jet nozzle according to claim 1, characterized in that: Two annular grooves are arranged on the head of the main body; the air intake joint, the control coil and the tail of the main body form an annular groove, and an annular sealing ring is arranged in the annular groove.

Images