A high pressure jet device for low altitude aircraft and a jet engine therefor

Abstract

The application discloses a jet engine for low-altitude aircraft, which comprises a driving source and a fixing frame, and further comprises high-pressure jet devices, wherein the high-pressure jet devices are at least two, the two high-pressure jet devices are fixed on the fixing frame in a mirror image mode, a driving mechanism for driving the two high-pressure jet devices to synchronously and mirror-imaged move is arranged at the middle of the two high-pressure jet devices, and the driving source drives the driving mechanism. The application further discloses a high-pressure jet device for low-altitude aircraft. The high-pressure jet device for low-altitude aircraft and the jet engine thereof utilize high-pressure air generated in the high-pressure jet device to form a jet effect similar to that of a jet engine, and the flow and pressure of the jet can be effectively adjusted by controlling the number of high-pressure generating mechanisms, so that the waste of energy can be effectively reduced under the premise of providing sufficient power.

Description

Technical Field

[0001] This invention belongs to the field of flight propulsion for low-altitude aircraft, and more specifically, relates to a high-pressure jet device and its jet engine for low-altitude aircraft. Background Technology

[0002] An aircraft is any human-made flying object capable of taking off from the ground, flying in space, and being controlled by a person for personal use. With the increasing prevalence of aircraft, low-speed, low-altitude aircraft will be the future direction of personal flying vehicles. In particular, to alleviate existing traffic congestion, more and more car manufacturers are researching flying cars as one of the future directions for automobiles.

[0003] Existing flying cars are mostly conceptual devices. The technical problems they need to solve include the weight of the vehicle itself and the power supply for the car's flight. The existing solutions are twofold: one is to learn from drones and use propellers to blow air downwards to provide power; the other is to learn from existing aircraft and use turbojet engines. However, the former requires a large enough space and a large enough or many propellers to provide enough power. For flying cars with a large overall weight, in order to overcome the effect of gravity and float in the air, at least twice the space of the flying car is needed to meet the requirements for installing propellers. The latter is too expensive and too powerful, and it is too wasteful for low-altitude flight. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a high-pressure jet device and its jet engine for low-altitude aircraft that has a relatively small space occupation, does not cause excessive power waste, and has a reasonable structure.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0006] A high-pressure jet device for low-altitude aircraft includes at least one set of high-pressure generating mechanisms arranged in an array. Each high-pressure generating mechanism includes a high-pressure generating chamber, a connector for airtightly connecting the two ends of the high-pressure generating chamber, and a high-pressure generating component placed inside the high-pressure generating chamber. The connector has an air inlet chamber and an air outlet chamber that are isolated from each other. The air inlet chamber and the air outlet chamber are respectively connected to the high-pressure generating chamber. One-way valves are provided at the points where the air inlet chamber and the air outlet chamber communicate with the outside. The high-pressure generating component consists of a piston and a sliding rod that passes through the piston. The two ends of the sliding rod pass through the connector located on both sides of the high-pressure generating chamber. The piston is matched with the high-pressure generating chamber and can be driven by the sliding rod to move within the high-pressure generating chamber.

[0007] Specifically, the high-pressure generating mechanism is arranged in at least two rows, and the connecting parts of adjacent high-pressure generating mechanisms are integral structures. The connecting parts are provided with air chamber slots in the same number as the number of rows. The end of the high-pressure generating chamber is airtightly embedded in the air chamber slot. The connection between the air outlet chamber, the air inlet chamber and the high-pressure generating chamber is provided in the air chamber slot.

[0008] Furthermore, each column of high-pressure generating mechanisms is provided with at least two sets, and the connecting parts of two adjacent sets of high-pressure generating mechanisms are arranged in a mirror image. Each set of high-pressure generating chambers is provided with pistons, and the sliding rod directly passes through the entire column of high-pressure generating mechanisms and drives all the pistons in the column.

[0009] Specifically, the side wall of the connector is provided with at least one air passage that penetrates the connector to connect the air inlet chamber or the air outlet chamber to the outside. The one-way valve is disposed in the air passage and matches the number of air passages.

[0010] Preferably, the one-way air valve includes a fixing member, a sealing member, a spring member, and a connecting rod. The air inlet of the air passage is provided with a groove for placing the fixing member. The fixing member is fixed in the groove. The spring member is fixed above the fixing member. The sealing member is placed in the air outlet direction of the air passage and can block the air outlet of the air passage. The connecting rod passes through the fixing member and its two ends are respectively connected to the spring member and the sealing member.

[0011] Specifically, a partition is provided between the two connecting parts that are mirror-aligned, and a top plate is provided on the side of the separately set connecting part away from the high-pressure generating chamber. Both the top plate and the partition are used to seal the air inlet chamber and the air outlet chamber, so that the air inlet chamber and the air outlet chamber in a single connecting part are relatively independent.

[0012] Preferably, it also includes a high-pressure air chamber and a filter chamber. The high-pressure air chamber corresponds to the air outlet chamber and covers all the air passages that pass through the air outlet chamber. The filter chamber corresponds to the air inlet chamber and covers all the air passages that pass through the air inlet chamber. The partition, the top plate, the high-pressure generating mechanism, the high-pressure air chamber, and the filter chamber are all fixed by a number of through-type screws.

[0013] Another technical solution of the present invention to solve the above-mentioned technical problem is:

[0014] A jet engine for low-altitude aircraft includes a drive source and a mounting frame, and further includes a high-pressure jet device as described above. There are at least two high-pressure jet devices, which are fixed to the mounting frame in a mirror image. A drive mechanism is provided at the middle of the two high-pressure jet devices to simultaneously drive the two high-pressure jet devices to perform synchronous mirror image motion. The drive source drives the drive mechanism.

[0015] Specifically, the drive mechanism includes a drive crankshaft and a drive connecting rod. The two ends of the drive connecting rod are used to hinge the drive crankshaft and the slide rod. The drive crankshaft is provided with at least one set of convex shafts with opposite directions and the same amplitude, which are used to drive the drive connecting rods of the two symmetrical slide rods on both sides to be hinged to the convex shafts that are in a set with each other.

[0016] Furthermore, the mounting frame is provided with support plates on both the front and rear sides of the high-pressure jet device. The support plates are provided with slide rails in a number consistent with the number of rows of high-pressure generating mechanisms. The slide rails are provided with sliders and slide covers. Above the sliders are fixed grooves for accommodating the slide rods and connecting grooves for placing connecting rods that are hinged to the drive connection. The slide covers are fastened to the sliders and fix the ends of the slide rods and the connecting rods to the sliders. Below the sliders are sliding grooves that match the slide rails. The sliding grooves are provided with a number of ball bearings. The sliding grooves slide on the slide rails and the ball bearings reduce friction.

[0017] The present invention has the following beneficial effects:

[0018] (1) By utilizing the high-pressure air generated in the high-pressure jet device, a jet effect similar to that of a worm gear jet engine is formed. Furthermore, the jet flow and pressure can be effectively adjusted by controlling the number of high-pressure generating mechanisms, thereby effectively reducing energy waste while providing sufficient power.

[0019] (2) By setting up multiple groups in a single row, the length of the high pressure generating chamber of each high pressure generating mechanism is reduced, thereby reducing the actual stroke of the slide rod. Under the premise of ensuring sufficient supply of high pressure air, the length of the entire high pressure jet device is effectively reduced, and the shorter actual stroke can also effectively reduce the driving distance of the high pressure jet device.

[0020] (3) By collecting and supplying high-pressure air generated by the same high-pressure jet device through a high-pressure air chamber, the utilization rate of high-pressure air can be improved, while avoiding unnecessary loss of high-pressure air and increased complexity of structure caused by too many pipelines.

[0021] (4) By simultaneously driving the high-pressure jet device set in a mirror image through the crankshaft, the operation of the entire engine can be made more regular, and the engine vibration phenomenon can be effectively avoided.

[0022] (5) By setting the placement of the slide rail and the slider, the friction force on the slide rod during sliding is effectively reduced, which is conducive to better converting mechanical energy into air energy and improving the energy conversion efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the high-pressure gas device in an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the front (left) and internal (right) structure of the high-pressure gas device in an embodiment of the present invention.

[0026] Figure 4 The diagram shows the overall front view (left) and cross-sectional view (right) of the combined structure of the connector and the one-way valve in an embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of the overall (right) and cross-sectional (left) structure of the back side of the connector in an embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of the one-way air valve in an embodiment of the present invention.

[0029] Figure 7 This is a schematic diagram of the structure of the fixing frame in an embodiment of the present invention.

[0030] Figure 8 For the present invention Figure 1 Enlarged structural diagram of part A in the middle.

[0031] Figure 9 This is a schematic diagram of the overall (right) and top (left) structure of the slider in an embodiment of the present invention.

[0032] Figure 10 This is a schematic diagram of the overall (left) and bottom (right) structure of the sliding cover in an embodiment of the present invention.

[0033] Figure 11 This is a schematic diagram of the structure of the drive link (right) and the connecting link (left) in an embodiment of the present invention.

[0034] The meanings of the numbers in the attached diagram are as follows:

[0035] 1. High-pressure jet device; 11. Top plate; 12. Partition; 13. Connector; 131. Inlet chamber; 132. Outlet chamber; 133. Chamber slot; 134. Air passage; 135. Groove; 14. One-way valve; 141. Fixing component; 142. Seal; 143. Spring component; 144. Connecting rod; 15. High-pressure generating chamber; 16. Piston; 17. Slide rod; 171. Fixing hole; 18. Screw; 2. Filter chamber; 3. High-pressure chamber; 31. Pipe port; 4. Fixing bracket; 41. Bearing; 42. Bearing plate; 43. Slide rail; 44. Slider; 441. Fixing groove; 442. Connecting groove; 443. Insertion hole; 444. Slide groove; 445. Sliding ball; 45. Sliding cover; 451. Fixing rod; 5. Drive crankshaft; 51. Cam shaft; 6. Drive connecting rod; 7. Connecting rod; 71. Connecting hole; 8. Drive source. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the accompanying drawings.

[0037] Example:

[0038] An embodiment of the present invention provides a jet engine for a low-altitude aircraft, comprising a drive source 8 and a mounting frame 4, and further comprising a high-pressure jet device 1 as described above. There are at least two high-pressure jet devices 1, which are fixed to the mounting frame 4 in a mirror image. A drive mechanism is provided at the middle of the two high-pressure jet devices 1 to simultaneously drive the two high-pressure jet devices 1 to perform synchronous mirror image motion. The drive source 8 drives the drive mechanism.

[0039] The high-pressure jet device 1 includes at least one set of high-pressure generating mechanisms arranged in an array. Each high-pressure generating mechanism includes a high-pressure generating chamber 15, a connector 13 for airtightly connecting the two ends of the high-pressure generating chamber 15, and a high-pressure generating component placed inside the high-pressure generating chamber 15. The connector 13 has an air inlet chamber 131 and an air outlet chamber 132 that are isolated from each other. The air inlet chamber 131 and the air outlet chamber 132 are respectively connected to the high-pressure generating chamber 15. One-way valves 14 are provided at the points where the air inlet chamber 131 and the air outlet chamber 132 communicate with the outside. The high-pressure generating component consists of a piston 16 and a sliding rod 17 that passes through the piston 16. The two ends of the sliding rod 17 pass through the connector 13 located on both sides of the high-pressure generating chamber 15. The piston 16 is matched with the high-pressure generating chamber 15 and can move within the high-pressure generating chamber 15 by being driven by the sliding rod 17. The piston 16 compresses the air in the high-pressure generating chamber 15. When the piston moves in either direction, the high-pressure air can be discharged from the outlet chamber 132 facing the forward direction of the piston 16, and the outside air can be discharged from the inlet chamber 131 facing the back of the forward direction of the piston 16. This ensures that the bidirectional movement of the piston 16 is working, effectively increasing the flow rate of compressed air.

[0040] Specifically, the high-pressure generating mechanism is arranged in at least two rows. The connecting member 13 of adjacent high-pressure generating mechanisms is an integral structure. The connecting member 13 is provided with air chamber slots 133, the same number as the number of rows. The end of the high-pressure generating chamber 15 is airtightly embedded in the air chamber slot 133. The communication between the outlet chamber 132, the inlet chamber 131 and the high-pressure generating chamber 15 is located in the air chamber slot 133. By using a multi-row arrangement of high-pressure generating mechanisms, the total high-pressure airflow of a single high-pressure jet device 1 can be significantly increased, thereby providing sufficient power for the high-pressure jet mechanism to operate.

[0041] Furthermore, each column of the high-pressure generating mechanism is configured with at least two sets. The connecting members 13 of adjacent sets of high-pressure generating mechanisms are arranged in a mirror image. Each set of high-pressure generating chambers 15 is equipped with a piston 16. The sliding rod 17 directly passes through the entire column of high-pressure generating mechanisms and drives all the pistons 16 in the column. By adopting a multi-set column configuration, the length of the high-pressure generating chamber 15 can be effectively controlled, while also ensuring that the actual stroke of the sliding rod 17 is effectively controlled, ensuring that the actual stroke of the sliding rod 17 is short. This allows the overall volume of the high-pressure jet device 1 to be effectively reduced, while still maintaining the high-pressure airflow generated by a large cylinder.

[0042] Specifically, the side wall of the connector 13 is provided with at least one air passage 134 that penetrates the connector 13 to connect the air inlet chamber 131 or the air outlet chamber 132 to the outside. The one-way valve 14 is disposed in the air passage 134 and matches the number of air passages 134. Preferably, the one-way valve 14 includes a fixing member 141, a sealing member 142, a spring member 143, and a connecting rod 7144. The air inlet of the air passage 134 is provided with a groove 135 for placing the fixing member 141. The fixing member 141 is fixed in the groove 135. The spring member 143 is fixed above the fixing member 141. The sealing member 142 is placed in the air outlet direction of the air passage 134 and can block the air outlet of the air passage 134. The connecting rod 7144 penetrates the fixing member 141 and its two ends are respectively connected to the spring member 143 and the sealing member 142. The one-way valve 14 is mainly used to seal the air passages 134 corresponding to the air inlet chamber 131 in front of the piston 16 and the air outlet chamber 132 in the piston 16's forward direction when the piston 16 is moving, thereby avoiding wasted energy. Preferably, the air passages 134 are designed with multiple channels, which can effectively reduce the area of ​​the one-way valve 14, thus making it easier for air to push the one-way valve 14 and reducing aerodynamic losses.

[0043] Specifically, a partition 12 is provided between the two mirror-image adjacent connecting parts 13, and a top plate 11 is provided on the side of the individually connected connecting part 13 away from the high-pressure generating chamber 15. Both the top plate 11 and the partition 12 are used to seal the air inlet chamber 131 and the air outlet chamber 132, making the air inlet chamber 131 and the air outlet chamber 132 relatively independent in a single connecting part 13. The connecting part 13 is normally cast. For ease of production, the air inlet chamber 131 and the air outlet chamber 132 are exposed from the back of the connecting part 13 of the air chamber groove 133. Therefore, they need to be sealed by the partition 12 or the top plate 11 to ensure the airtightness of the air inlet chamber 131 and the air outlet chamber 132, and at the same time reduce the difficulty of production, which is conducive to mass production.

[0044] Preferably, the system also includes a high-pressure air chamber 3 and a filter chamber 2. The high-pressure air chamber 3 corresponds to the air outlet chamber 132 and covers all the air passages 134 that pass through the air outlet chamber 132. The filter chamber 2 corresponds to the air inlet chamber 131 and covers all the air passages 134 that pass through the air inlet chamber 131. The partition 12, the top plate 11, the high-pressure generating mechanism, the high-pressure air chamber 3, and the filter chamber 2 are all fixed by several through-type screws 18. The high-pressure air chamber 3 has an additional opening 31 for connecting to an external pipeline to supply high-pressure air. The top of the filter chamber 2 is equipped with a filter screen, which can effectively filter the outside air and prevent external impurities from entering the high-pressure generating mechanism. In addition, the side of the connector 13 is provided with several screw holes for stably fixing the high-pressure jet device 1 to the fixing frame 4.

[0045] Specifically, the drive mechanism includes a drive crankshaft 5 and a drive connecting rod 6. The two ends of the drive connecting rod 6 are used to hinge the drive crankshaft 5 and the slide rod 17. The drive crankshaft 5 has at least one set of convex shafts 51 with opposite directions and consistent amplitudes, used to drive the drive connecting rods 6 of the two symmetrical slide rods 17 on both sides to be hinged to the set of convex shafts 51. Bearings 41 are provided at the mounting positions of the fixed frame 4 for the drive crankshaft 5, facilitating its installation and rotation. Simultaneously, the use of mutually outwardly mirrored convex shafts 51 enables synchronous driving of the high-pressure jet devices 1 on both sides, thereby reducing vibration during the operation of the entire jet engine.

[0046] Furthermore, the mounting frame 4 is provided with bearing plates 42 on both the front and rear sides of the high-pressure jet device 1. The bearing plates 42 are provided with slide rails 43 in number consistent with the number of rows of high-pressure generating mechanisms. The slide rails 43 are provided with sliders 44 and sliding covers 45. The sliders 44 are provided with a fixing groove 441 for accommodating the slide rod 17 and a connecting groove 442 for placing the connecting rod 7144 that is hinged to the drive. The sliding cover 45 is fastened to the sliders 44 and fixes the end of the slide rod 17 and the connecting rod 7144 to the sliders 44. The sliders 44 are provided with a sliding groove 444 that matches the slide rails 43. The sliding grooves 444 are provided with a plurality of sliding balls 445. The sliding grooves 444 slide on the slide rails 43 and the sliding balls 445 reduce friction. Preferably, the fixing groove 441 and the connecting groove 442 are integrated and arranged in two sets of mirror images above the slider 44. This eliminates the need for specific directional restrictions during installation, making installation convenient. It also facilitates the arrangement of the high-pressure jet devices 1 in an array. Two adjacent high-pressure jet devices 1 in the same row can be directly connected through the slider 44. The two fixing rods 451 on the slider 44 pass through the fixing holes 171 at the end of the sliding rod 17 and the connecting holes 71 in the middle of the connecting rod 7144, respectively, and are nested in the insertion holes 443 formed by the fusion of the fixing groove 441 and the connecting groove 442. The sliding cover 45 is then locked onto the slider 44 with screws, making the overall connection stable and reliable, and ensuring the overall operation of the engine.

[0047] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the inventive concept, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A jet engine for low altitude flying vehicles, comprising a driving source (8) and a fixed frame (4), characterized in that: Also include high pressure jet device (1), the high pressure jet device (1) at least two, two the high pressure jet device (1) is fixed on the fixed frame (4) mirror image, located in the middle of two the high pressure jet device (1) is provided with drive mechanism of two the high pressure jet device (1) is driven simultaneously and is synchronous mirror image movement, the drive source (8) drives the drive mechanism, the high pressure jet device (1) includes at least one group of high pressure generating mechanism arranged in an array, the high pressure generating mechanism includes high pressure generating bin (15), the connecting piece (13) for airtight connection both ends of the high pressure generating bin (15) and the high pressure generating component placed in the high pressure generating bin (15), the connecting piece (13) is provided with mutually isolated air inlet bin (131) and air outlet bin (132), the air inlet bin (131), the air outlet bin (132) are respectively communicated with the high pressure generating bin (15), the air inlet bin (131), the air outlet bin (132) and the outside are all provided with one-way air valve (14), the high pressure generating component is composed of piston (16) and slide rod (17) penetrating the piston (16), both ends of the slide rod (17) penetrate the connecting piece (13) located on both sides of the high pressure generating bin (15), the piston (16) is matched with the high pressure generating bin (15) and can be driven by the slide rod (17) in the high pressure generating bin (15) to move the piston (16); The high pressure generating mechanism is provided with at least two columns, the connecting piece (13) of adjacent high pressure generating mechanism is an integral structure, the connecting piece (13) is provided with the same number of air bin grooves (133) as the column number, the end of the high pressure generating bin (15) is airtightly embedded in the air bin groove (133), the air outlet bin (132) and the air inlet bin (131) are arranged in the air bin groove (133). Also include high pressure air bin (3) and filter bin (2), the high pressure air bin (3) corresponds to the air outlet bin (132) and wraps all the air ducts (134) penetrating the air outlet bin (132), the filter bin (2) corresponds to the air inlet bin (131) and wraps all the air ducts (134) penetrating the air inlet bin (131).

2. The jet engine for low altitude aircraft of claim 1, wherein: Each column of the high pressure generating mechanism is provided with at least two groups, the connecting pieces (13) of the two groups of high pressure generating mechanism close to each other are arranged in mirror image, the piston (16) is arranged in each group of high pressure generating bin (15), the slide rod (17) directly penetrates the whole column of high pressure generating mechanism and drives all the pistons (16) in this column.

3. The jet engine for low altitude aircraft of claim 2, wherein: The sidewall of the connecting piece (13) is provided with at least one air duct (134) penetrating the connecting piece (13) to connect the air inlet bin (131) or the air outlet bin (132) with the outside, the one-way air valve (14) is arranged in the air duct (134) and matches the number of air ducts (134).

4. The jet engine for low altitude vehicles of claim 3, wherein: The one-way air valve (14) comprises a fixing member (141), a sealing member (142), a spring member (143) and a connecting rod (7) (144), a gas inlet of the air passage (134) is provided with a groove (135) for placing the fixing member (141), the fixing member (141) is fixed in the groove (135), the spring member (143) is fixed above the fixing member (141), the sealing member (142) is placed at the air outlet direction of the air passage (134) and can block the air outlet of the air passage (134), and the connecting rod (7) (144) penetrates through the fixing member (141) and is connected with the spring member (143) and the sealing member (142) at two ends respectively.

5. The jet engine for low altitude aircraft according to any one of claims 1 to 4, characterized in that: A partition plate (12) is arranged between the two connecting members (13) arranged in mirror image, one side of the separately arranged connecting member (13) away from the high-pressure generating chamber (15) is provided with a top plate (11), and the top plate (11) and the partition plate (12) are used for closing the air inlet chamber (131) and the air outlet chamber (132) to make the air inlet chamber (131) and the air outlet chamber (132) in a single connecting member (13) be independent of each other.

6. The jet engine for low altitude aircraft of claim 5, wherein: The partition plate (12), the top plate (11), the high-pressure generating mechanism, the high-pressure air chamber (3) and the filter chamber (2) are all fixed by a plurality of penetrating screw rods (18).

7. The jet engine for low altitude vehicles of claim 1, wherein: The driving mechanism comprises a driving crankshaft (5) and a driving connecting rod (6), two ends of the driving connecting rod (6) are used for hingedly connecting the driving crankshaft (5) and the slide rod (17), and at least one set of convex shafts (51) with opposite directions and consistent amplitudes are arranged on the driving crankshaft (5) and used for hingedly connecting the driving connecting rod (6) of two symmetrical slide rods (17) on two sides with the convex shafts (51) as a set.

8. The jet engine for low altitude aircraft of claim 7, wherein: Bearing plates (42) are arranged on the front and rear sides of the high-pressure air jet device (1) on the fixing frame (4), a number of slide rails (43) corresponding to the number of high-pressure generating mechanisms are arranged on the bearing plates (42), slide blocks (44) and slide covers (45) are arranged on the slide rails (43), fixed grooves (441) for accommodating the slide rods (17) and connecting grooves (442) for placing the connecting rods (7) (144) hingedly connected with the driving connecting rods (6) are arranged above the slide blocks (44), the slide covers (45) are buckled on the slide blocks (44) and fix the ends of the slide rods (17) and the connecting rods (7) (144) on the slide blocks (44), slide grooves (444) matched with the slide rails (43) are arranged below the slide blocks (44), a plurality of slide beads (445) are arranged in the slide grooves (444), and the slide grooves (444) slide on the slide rails (43) and reduce the friction force through the slide beads (445).

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