CN220884804U - Adjustable air inlet device of engine - Google Patents
Adjustable air inlet device of engine Download PDFInfo
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- CN220884804U CN220884804U CN202322888561.7U CN202322888561U CN220884804U CN 220884804 U CN220884804 U CN 220884804U CN 202322888561 U CN202322888561 U CN 202322888561U CN 220884804 U CN220884804 U CN 220884804U
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Abstract
The utility model discloses an adjustable air inlet device of an engine, which comprises an unadjustable rear-section pipeline, a connecting pipeline, a fixed base and an adjustable pipeline, wherein the connecting pipeline is fixed at the air inlet end of the unadjustable rear-section pipeline, the fixed base is arranged at the air inlet end of the connecting pipeline, the adjustable pipeline is sleeved on the fixed base, the fixed base is arranged in a hollow way, and the inner cavity of the adjustable pipeline is communicated with the inner cavity of the unadjustable rear-section pipeline through the inner cavity of the fixed base and the inner cavity of the connecting pipeline; the adjustable pipe can swing relative to the fixed base. According to the adjustable air inlet device of the engine, through the hinging between the adjustable pipeline and the fixed base, the adjustable pipeline can swing relative to the adjusting piece on the fixed base, so that the amount of air entering the non-adjustable rear-section pipeline through the adjustable pipeline is controlled, the engine can obtain the optimal air inlet flow and air compression ratio at different flying speeds and heights, and the stability and the controllability of an airplane are improved.
Description
Technical Field
The utility model relates to the technical field of air inlet devices, in particular to an adjustable air inlet device of an engine.
Background
The air inlet channel of the aircraft is an air flow channel for providing working medium for the engine when the engine works, is a key component for reflecting the performance matching degree of the aircraft and the engine, and the performance quality of the air inlet channel directly determines the maneuvering performance of the whole aircraft. The function of the air inlet channel is to provide proper air flow for the engine and to meet the requirement, and its working principle is to utilize dynamic pressure of the head-on high-speed air flow to convert the flow energy into potential energy and to raise the outlet pressure of the air flow to play a role of diffusion. Conventional air inlets typically employ a constant value inlet cross section and do not provide the ability to adjust the inlet area for different flight conditions. Therefore, we propose an engine adjustable intake device.
Disclosure of utility model
The utility model mainly aims to provide an adjustable air inlet device of an engine, which can effectively solve the problems in the background technology.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
An adjustable air inlet device of an engine comprises an unadjustable rear-section pipeline, a connecting pipeline, a fixed base and an adjustable pipeline, wherein the connecting pipeline is fixed at the air inlet end of the unadjustable rear-section pipeline, the fixed base is arranged at the air inlet end of the connecting pipeline in a sleeved mode, the fixed base is arranged in a hollow mode, and the inner cavity of the adjustable pipeline is communicated with the inner cavity of the unadjustable rear-section pipeline through the inner cavity of the fixed base and the inner cavity of the connecting pipeline; the adjustable pipe can swing relative to the fixed base.
Preferably, the fixed base comprises a fixed frame, the fixed frame is fixed at the air inlet end of the connecting pipeline, the inner cavity of the fixed frame is communicated with the inner cavity of the connecting pipeline and the inner cavity of the adjustable pipeline, an adjusting plate is fixedly connected to one end of the fixed frame away from the connecting pipeline, an inner wall surface of the fixed frame is inwards bent to form an arc-shaped surface, the adjusting plate is an arc-shaped plate, and an arc-shaped surface of the adjusting plate is opposite to and connected with the arc-shaped surface on the fixed frame.
Preferably, the adjustable pipeline is sleeved on the fixed frame, the outer end faces on two sides of the arc-shaped inner wall face of the fixed frame are rotatably connected with the inner wall face of the adjustable pipeline through shafts, and the adjusting piece is arranged in the adjustable pipeline.
Compared with the prior art, the utility model has the following beneficial effects:
According to the utility model, through the hinging between the adjustable pipeline and the fixed base, the adjustable pipeline can swing relative to the adjusting piece on the fixed base, so that the adjusting piece can divide the air inlet channel of the adjustable pipeline into two parts, the area of the air inlet of the adjustable pipeline can be adjusted by controlling the swing amplitude of the adjustable pipeline relative to the adjusting piece, and the amount of air entering the non-adjustable rear-section pipeline through the adjustable pipeline can be controlled, so that the engine can obtain optimal air inlet flow and air compression ratio under different flying speeds and heights, and the performance and combustion efficiency of the engine are improved. When flying at high altitude, the air density is lower, the air inlet channel needs a larger area to ensure enough air inlet flow, and the area of the air inlet channel can be automatically adjusted along with the change of the height by the air inlet channel with adjustable inlet area so as to adapt to different heights and speeds. The air inlet passage with adjustable inlet area can reduce noise and vortex when air flows, so that the noise characteristic of the engine is improved. The air inlet channel with adjustable inlet area can keep proper air inlet flow and pressure under different flight conditions, so that the stability and the controllability of the aircraft are improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an engine variable intake apparatus according to the present utility model;
FIG. 2 is a schematic diagram of the non-adjustable rear section of the engine inlet and connecting pipes according to the present utility model;
FIG. 3 is a schematic view of a fixed base of an engine variable intake apparatus according to the present utility model;
FIG. 4 is a schematic view of the structure of an adjustable duct of an engine adjustable intake apparatus according to the present utility model;
FIG. 5 is a schematic view of the positions of the adjustable pipe and the fixed base after the adjustable pipe swings a certain angle relative to the fixed base.
In the figure: 1. a non-adjustable back-end pipe; 2. a connecting pipe; 3. a fixed base; 31. a fixed frame; 32. a regulating piece; 4. the conduit may be adjustable.
Detailed Description
The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1-5, an adjustable air inlet device of an engine comprises an unadjustable rear-section pipeline 1, a connecting pipeline 2, a fixed base 3 and an adjustable pipeline 4, wherein the unadjustable rear-section pipeline 1 is fixed on the surface of the engine body, the air outlet end of the unadjustable rear-section pipeline 1 points to an air inlet of the engine, the connecting pipeline 2 is fixed at the air inlet end of the unadjustable rear-section pipeline 1, the fixed base 3 is fixed at the air inlet end of the connecting pipeline 2, the adjustable pipeline 4 is sleeved on the fixed base 3, the fixed base 3 is hollow, the inner cavity of the adjustable pipeline 4 is communicated with the inner cavity of the unadjustable rear-section pipeline 1 through the inner cavity of the fixed base 3, the inner cavity of the connecting pipeline 2 and the inner cavity of the unadjustable rear-section pipeline 1, and air flows through the inner cavity of the adjustable pipeline 4, the inner cavity of the fixed base 3, and the inner cavity of the unadjustable rear-section pipeline 1. The adjustable pipe 4 can oscillate relative to the fixed base 3.
Further, the fixed base 3 comprises a fixed frame 31, the fixed frame 31 is fixed at the air inlet end of the connecting pipeline 2, the inner cavity of the fixed frame 31 is communicated with the inner cavity of the connecting pipeline 2 and the inner cavity of the adjustable pipeline 4, and air flow enters the inner cavity of the connecting pipeline 2 from the inner cavity of the adjustable pipeline 4 through the inner cavity of the fixed frame 31, and an adjusting sheet 32 is fixedly connected to one end, far away from the connecting pipeline 2, of the fixed frame 31.
An inner wall surface of the fixed frame 31 is inwards bent to form an arc-shaped surface, the adjusting piece 32 is an arc-shaped piece, and an arc-shaped surface of the adjusting piece 32 is opposite to and connected with the arc-shaped surface on the fixed frame 31, so that an integrated curved surface is formed, and aerodynamic resistance is reduced. The adjustable pipeline 4 is sleeved on the fixed frame 31, the outer end faces on two sides of the arc-shaped inner wall face of the fixed frame 31 are rotatably connected with the inner wall face of the adjustable pipeline 4 through shafts, and the adjusting piece 32 is arranged in the adjustable pipeline 4. The adjustable pipeline 4 is arranged on the surface of the machine body, one end of the adjustable pipeline 4 facing the surface of the machine body is concavely bent towards one side facing away from the surface of the machine body, one inner cavity wall of the adjustable pipeline 4 opposite to the concavely bent outer side end surface of the adjustable pipeline 4 is bent towards the inner side of the adjustable pipeline 4 to form an inner curved surface, and the inner curved surface of the adjustable pipeline 4 is matched with the other arc-shaped surface of the adjusting piece 31; specifically, when the area of the air inlet of the adjustable pipeline 4 is the largest, the inner curved surface on the adjustable pipeline 4 is attached to the arc-shaped surface of the adjusting piece 31, and at this time, the air flow enters the non-adjustable rear pipeline 1 along the curved surface of the arc-shaped surface on the adjusting piece 31 and the curved surface of the arc-shaped surface on the fixed frame 31; when the air inlet area is adjusted, namely when the air inflow is adjusted, the air inlet end of the adjustable pipeline 4 moves to one side of the machine body, even if the air inlet end of the adjustable pipeline 4 swings around the axial machine body connected with the adjustable pipeline 4 and the fixed frame 31, the inner curved surface on the adjustable pipeline 4 is separated from contact with the curved surface on the adjusting piece 31, so that the inner curved surface on the adjustable pipeline 4 and the curved surface on the adjusting piece 31 form a V-shaped opening, at the moment, part of the air flow entering the adjustable pipeline 4 enters the non-adjustable rear-section pipeline 1 along the curved surface formed by the curved surface on the adjusting piece 31 and the curved surface on the fixed frame 31, and the other part of the air flow enters the V-shaped opening formed by the inner curved surface on the adjustable pipeline 4 and the curved surface on the adjusting piece 31, so that the air flow entering the non-adjustable rear-section pipeline 1 is reduced.
When the adjustable pipeline 4 is adjusted, a step gap formed between the front end of the adjustable pipeline and the machine body can be used as a boundary layer separation channel for the air inlet flow, so that the low-energy boundary air flow is reduced to enter the inner pipeline of the air inlet channel, and the performance of the air inlet system is improved. In order to ensure the tightness between the adjustable pipeline 4 and the machine body and the non-adjustable base under different rotation angles, the inner and outer molded surfaces of the side wall are equal straight wall surfaces.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (3)
1. The utility model provides an adjustable air inlet unit of engine, includes non-adjustable back end pipeline (1), connecting tube (2), fixed base (3) and adjustable pipeline (4), its characterized in that: the connecting pipeline (2) is fixed at the air inlet end of the non-adjustable rear pipeline (1), the air inlet end of the connecting pipeline (2) is provided with a fixed base (3), the fixed base (3) is sleeved with an adjustable pipeline (4), the fixed base (3) is arranged in a hollow mode, and the inner cavity of the adjustable pipeline (4) is communicated with the inner cavity of the non-adjustable rear pipeline (1) through the inner cavity of the fixed base (3) and the inner cavity of the connecting pipeline (2); the adjustable pipeline (4) can swing relative to the fixed base (3).
2. An engine variable intake apparatus according to claim 1, wherein: the fixed base (3) comprises a fixed frame (31), the fixed frame (31) is fixed at the air inlet end of the connecting pipeline (2), the inner cavity of the fixed frame (31) is communicated with the inner cavity of the connecting pipeline (2) and the inner cavity of the adjustable pipeline (4), one end of the fixed frame (31) away from the connecting pipeline (2) is fixedly connected with an adjusting sheet (32), an inner wall surface of the fixed frame (31) is inwards bent to form an arc-shaped surface, the adjusting sheet (32) is an arc-shaped sheet, and one arc-shaped surface of the adjusting sheet (32) is opposite to and connected with the arc-shaped surface on the fixed frame (31).
3. An engine variable intake apparatus according to claim 2, wherein: the adjustable pipeline (4) is sleeved on the fixed frame (31), the outer end faces, located on two sides of the arc-shaped inner wall face of the fixed frame (31), are rotatably connected with the inner wall face of the adjustable pipeline (4) through shafts, and the adjusting piece (32) is arranged in the adjustable pipeline (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322888561.7U CN220884804U (en) | 2023-10-26 | 2023-10-26 | Adjustable air inlet device of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322888561.7U CN220884804U (en) | 2023-10-26 | 2023-10-26 | Adjustable air inlet device of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220884804U true CN220884804U (en) | 2024-05-03 |
Family
ID=90867299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322888561.7U Active CN220884804U (en) | 2023-10-26 | 2023-10-26 | Adjustable air inlet device of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220884804U (en) |
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2023
- 2023-10-26 CN CN202322888561.7U patent/CN220884804U/en active Active
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