Mechanical disturbance type air supply system suitable for closed cabin and air supply method of mechanical disturbance type air supply system

Abstract

The invention discloses a mechanical disturbance type air supply system suitable for a closed cabin. A periodic swing air supply mechanical device and a cross-flow disturbance air supply mechanical device are arranged in an air bellow. The periodical swing air supply mechanical device comprises mounting plates fixedly arranged in the air box, a swing air supply mechanism is arranged between the mounting plates arranged at intervals, the swing air supply mechanism comprises a driving mechanism arranged between the mounting plates and guide vanes connected between the mounting plates in a swing mode, and tail rotating shafts are arranged on the guide vanes. The tail rotating shaft is in driving connection with the driving mechanism through the sliding block and the crank, and the tail rotating shaft is movably limited in the through groove in the mounting plate. The invention discloses a mechanical disturbance type air supply system suitable for a closed cabin and an air supply method of the mechanical disturbance type air supply system. An efficient and safe flow field can be formed in a passenger cabin, the air age is shortened, the influence of large-scale circulation in the cabin is weakened, and the residence time of pollutants is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of airflow structure design of a closed cabin, and in particular to a mechanical disturbance type air supply system and an air supply method thereof suitable for a closed cabin. Background Art

[0002] With the rapid development of the economy, more and more passengers choose to travel by air, and the comfort and safety of the aircraft cabin environment has become an important issue. For example, the invention patent in the prior art (invention application number: 202010168175.9) discloses a ventilation system that delivers air along the aisle of the aircraft cabin; the ventilation system includes three independent air supply modes that can be used in combination: high-speed downward air supply from the top plate, low-speed downward air supply from the top plate, and air supply under the seat, which provide a thermal environment for passengers and crew members at different stages of boarding, disembarking, and flight. In the prior art, some inhalable pathogenic particles suspended in the air are also more easily spread. Although aircraft manufacturers are constantly improving the safety of the cabin, the cross-infection caused by pathogenic particles in the cabin has not been completely eliminated. Therefore, it is particularly important to effectively control pollutants and reduce the exposure time of passengers to high concentrations of pollutants.

[0003] The traditional side air supply method has high turbulence intensity. The air supply jet enters the cabin with a certain momentum. The two jets collide in the cabin aisle area and then deflect downward. At the same time, the human body in the cabin will generate an upward thermal plume due to heat dissipation. Due to the interaction between the plume and the jet, a large-scale coherent structure is eventually formed, as shown in Figure 1. This will cause local air stagnation of pollutants, which increases the risk of passengers being exposed to high concentrations of pollutants. Summary of the invention

[0004] The present invention overcomes the shortcomings of the prior art and provides a mechanical disturbance air supply system and air supply method suitable for a closed cabin; it can form an efficient and safe flow field in the cabin, shorten the air age and weaken the influence of large-scale circulation in the cabin, so as to reduce the residence time of pollutants.

[0005] To achieve the above object, the technical solution adopted by the present invention is: a mechanical disturbance air supply system suitable for a closed cabin, comprising: a bellows, a wind cavity is arranged in the bellows, and an air outlet and an air inlet connected to the wind cavity are arranged on the bellows; a periodic swing air supply mechanical device and a crossflow disturbance air supply mechanical device are arranged in the bellows; The periodic oscillating air supply mechanical device includes: a mounting plate fixedly arranged in the bellows, a oscillating air supply mechanism is arranged between the mounting plates arranged at intervals, the oscillating air supply mechanism includes a driving mechanism arranged between the mounting plates, and guide vanes oscillatingly connected between the mounting plates, a tail shaft is arranged on the guide vanes, the tail shaft is driven and connected to the driving mechanism through a slider and a crank, and the movement of the tail shaft is limited in a through groove on the mounting plate.

[0006] In a preferred embodiment of the present invention, a plurality of guide blades are arranged at intervals and combined by a spacer plate, and guide gaps are reserved between adjacent guide blades.

[0007] In a preferred embodiment of the present invention, the two ends of the guide vane are respectively rotatably connected to the bearings of the mounting plate through the middle rotating shaft of the vane; the transmission shaft of the driving mechanism is rotatably connected to the mounting plate through the bearing, and the transmission shaft is movably passed through the mounting plate and connected to one end of the crank; The inner and outer sides of the mounting plate are provided with a synchronization plate and a slider respectively. The tail rotating shafts at both ends of the plurality of guide blades move from inside to outside and pass through the rotating hole 1 of the synchronous plate on both sides, the through groove of the mounting plate, and the rotating hole 2 of the slider; The tail rotating shaft of the guide vane is movably connected to one end of the sliders on both sides respectively, the other end of the slider is provided with a slide groove, and the other end of the crank is slidably limited in the slide groove.

[0008] In a preferred embodiment of the present invention, the slider has an inverted T-shaped structure, the tail shaft is arranged at the large end of the slider, the slide groove is arranged at the small end of the slider, and the setting track of the slide groove intersects with the arrangement track of the tail shaft on the large end of the slider.

[0009] In a preferred embodiment of the present invention, the cross-flow disturbance air supply mechanical device includes a transmission shaft 2 rotatably connected to the bellows; a blade fixing device is coaxially sleeved on the transmission shaft 2, a plurality of blades are passed through the blade fixing device, and an air guide gap is reserved between adjacent blades; the transmission shaft 2 is connected to the driving shaft of the motor.

[0010] In a preferred embodiment of the present invention, the fan blade fixing device includes relatively arranged end plates, on which a second transmission shaft is arranged; and a positioning ring platform arranged at intervals between adjacent end plates, on which a plurality of through grooves for passing and limiting the fan blades are arranged.

[0011] In a preferred embodiment of the present invention, the fan blades are strip-shaped blades, and the cross-section of the strip-shaped blades is an arc surface, and the fan blades are evenly arranged on the fan blade fixing device in a clockwise or counterclockwise manner; The circular arrangement track of the fan blades is coaxially arranged with the transmission shaft on the fan blade fixing device.

[0012] In a preferred embodiment of the present invention, the wind box is provided with an air guiding inclined surface, and the air outlet is provided on the air guiding inclined surface; And / or, the cross-flow disturbance air supply mechanical device is arranged in the wind cavity, and the cross-flow disturbance air supply mechanical device is located at the air inlet.

[0013] In a preferred embodiment of the present invention, the angle between the wind guide slope and the bottom surface of the wind box is 130° to 170°; and / or the guide blade is in the shape of a wing.

[0014] In a preferred embodiment of the present invention, an air supply method of a mechanical disturbance type air supply system suitable for a closed cabin is implemented by using a mechanical disturbance type air supply system suitable for a closed cabin, and comprises the following steps: When the periodic swing air supply mechanical device is working: the driving mechanism drives the transmission shafts 1 on both sides to rotate at a set angular velocity, driving the crank connected to the transmission shaft 1 to rotate; The crank drives the slider to move up and down along the slide slot, and the slider drives the tail shaft to slide in the through slot; the tail shaft drives the guide blade to swing around the middle shaft of the blade, changing the incident angle and guiding the air supply airflow.

[0015] and / or, When the crossflow disturbance air supply mechanical device is working: the transmission shaft 2 is driven by the motor to rotate at a set angular velocity; the fan blades rotate to send fresh air into the cabin; and the swing cycle of the air supply is adjusted within a predetermined range.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention discloses a mechanical disturbance type air supply system and an air supply method suitable for a closed cabin, which can form an efficient and safe flow field in the cabin, shorten the air age and weaken the influence of large-scale circulation in the cabin, so as to reduce the retention time of pollutants.

[0017] By adjusting the rotation speed of the air supply blades through the periodic oscillation of the blades and the rotation of the crossflow fan, a uniform flow field in the cabin is obtained, thereby reducing thermal discomfort caused by temperature stratification.

[0018] 2. Through the disturbance of the flow field by blades and fan blades, the large-scale circulation formed by the original air supply airflow and the thermal plume of the passengers is destroyed, and the pollutant concentration is rapidly diluted.

[0019] 3. Shorten the air age, reduce the residence time of pollutants, and ultimately achieve control of pollutants. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] FIG1 is a diagram showing the airflow organization effect in the air supply cabin according to a preferred embodiment of the present invention; Figure 2 is a diagram showing the effect of airflow organization in a traditional air supply cabin; FIG3 is a schematic diagram of the arrangement of a swing air supply device according to a preferred embodiment of the present invention; FIG4 is an overall view of a swing air supply device according to a preferred embodiment of the present invention; FIG5 is a front cross-sectional view of the swing air supply of a preferred embodiment of the present invention; FIG6 is a side sectional view of a swing air supply device according to a preferred embodiment of the present invention; FIG7 is a detailed cross-sectional view of a swing air supply device according to a preferred embodiment of the present invention; FIG8 is a front cross-sectional view of a cross-flow air supply device according to a preferred embodiment of the present invention; Wherein the figure marks are: 1-guide vane, 2-blade middle shaft, 3-transmission shaft 1, 4-bearing, 5-crank, 6-through slot, 7-slider, 8-air supply duct, 9-tail shaft, 10-driving mechanism, 11-transmission shaft 2, 12-motor, 13-fan blade, 14-fan blade fixing device, 15-mounting plate, 16-partition plate, 17-synchronizing plate, A-mechanical disturbance air supply system, 18-bellows, 19-wind cavity, A-mechanical disturbance air supply system suitable for closed cabins. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solution of the present invention, rather than limitations on the technical solution of the present invention. The embodiments of the present invention and the technical features in the embodiments may be combined with each other unless there is a conflict.

[0023] The term "and / or" is only a description of the association relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " generally indicates that the related objects are in an "or" relationship. Embodiment 1

[0024] like Figure 1-Figure 8 As shown, a mechanical disturbance air supply system suitable for a closed cabin includes: a wind box 18, a wind cavity 19 is arranged in the wind box 18, and an air outlet and an air inlet connected to the wind cavity 19 are arranged on the wind box 18; a periodic swing air supply mechanical device and a crossflow disturbance air supply mechanical device are arranged in the wind box 18. An air guide slope is arranged on the wind box 18, and the air outlet is arranged on the air guide slope; the crossflow disturbance air supply mechanical device is arranged in the wind cavity 19, and the crossflow disturbance air supply mechanical device is located at the air inlet, and an air supply duct 8 is also connected to the wind box 18, and the air supply duct 8 is connected to the wind cavity 19.

[0025] Specifically, the periodic oscillating air supply mechanical device includes: a mounting plate 15 fixedly arranged in the bellows 18, a oscillating air supply mechanism is arranged between the mounting plates 15 arranged at intervals, the oscillating air supply mechanism includes a driving mechanism 10 arranged between the mounting plates 15, and a guide vane 1 oscillatingly connected between the mounting plates 15, a tail shaft 9 is arranged on the guide vane 1, the tail shaft 9 is driven and connected to the driving mechanism 10 through a slider 7 and a crank 5, and the tail shaft 9 is movably confined in the through groove 6 on the mounting plate 15.

[0026] Specifically, a plurality of guide blades 1 are arranged at intervals and combined by a spacer plate 16, and a guide gap is reserved between adjacent guide blades 1. The two ends of the guide blade 1 are respectively rotatably connected to the bearing 4 of the mounting plate 15 through the blade middle rotating shaft 2; the transmission shaft 13 of the driving mechanism 10 is rotatably connected to the mounting plate 15 through the bearing, and the transmission shaft 13 is movably connected to one end of the crank 5 after passing through the mounting plate 15.

[0027] Specifically, a synchronous plate 17 and a slider 7 are respectively provided on the inner and outer sides of the mounting plate 15, and the tail shafts 9 at both ends of the plurality of guide blades 1 are movably passed through the first rotation hole of the synchronous plate 17 on both sides, the through slot 6 of the mounting plate 15, and the second rotation hole of the slider 7 from the inside to the outside; the tail shaft 9 of the guide blade 1 is movably connected to one end of the slider 7 on both sides, and the other end of the slider 7 is provided with a slide slot, and the other end of the crank 5 is slidably confined in the slide slot. The slider 7 and the synchronous plate 17 movably confine the tail shaft 9 in the through slot 6 of the mounting plate 15. Embodiment 2

[0028] like Figure 1-Figure 8 As shown, a mechanical disturbance air supply system suitable for a closed cabin includes: a bellows 18, a wind cavity 19 is arranged in the bellows 18, and an air outlet and an air inlet connected to the wind cavity 19 are arranged on the bellows 18; a periodic swing air supply mechanical device and a crossflow disturbance air supply mechanical device are arranged in the bellows 18. An air guide slope is arranged on the bellows 18, and the air outlet is arranged on the air guide slope; the crossflow disturbance air supply mechanical device is arranged in the wind cavity 19, and the crossflow disturbance air supply mechanical device is located at the air inlet. The angle between the air guide slope and the bottom surface of the bellows 18 is 130°~170°; but it is not limited to this. In other embodiments, the specific angle can be adjusted according to actual usage.

[0029] Specifically, the periodic oscillating air supply mechanical device includes: a mounting plate 15 fixedly arranged in the bellows 18, a oscillating air supply mechanism is arranged between the mounting plates 15 arranged at intervals, the oscillating air supply mechanism includes a driving mechanism 10 arranged between the mounting plates 15, and a guide vane 1 oscillatingly connected between the mounting plates 15, a tail shaft 9 is arranged on the guide vane 1, the tail shaft 9 is driven and connected to the driving mechanism 10 through a slider 7 and a crank 5, and the tail shaft 9 is movably confined in the through groove 6 on the mounting plate 15.

[0030] Specifically, a plurality of guide blades 1 are arranged at intervals. In this embodiment, three guide blades 1 are arranged at intervals and combined by a spacer plate 16, and a guide gap is reserved between adjacent guide blades 1. The two ends of the guide blade 1 are respectively connected to the bearing 4 of the mounting plate 15 through the middle shaft 2 of the blade; the middle part of the guide blade 1 is fixed to the side bearing 4 by the middle shaft 2 of the blade, so that the up and down movement of the through slot 6 is converted into the louver swing of the guide blade 1. The transmission shaft 3 of the driving mechanism 10 is rotatably connected to the mounting plate 15 through the bearing, and the transmission shaft 3 is movably connected to one end of the crank 5 after passing through the mounting plate 15.

[0031] Specifically, the inner and outer sides of the mounting plate 15 are provided with a synchronous plate 17 and a slider 7, respectively. The tail shafts 9 at both ends of the plurality of guide vanes 1 are movably passed through the rotation hole 1 of the synchronous plate 17, the through slot 6 of the mounting plate 15, and the rotation hole 2 of the slider 7 from the inside to the outside; the tail shaft 9 of the guide vane 1 is movably connected with one end of the slider 7 on both sides, respectively, and a slide slot is provided at the other end of the slider 7, and the other end of the crank 5 is slidably confined in the slide slot. The slider 7 and the synchronous plate 17 movably confine the tail shaft 9 in the through slot 6 of the mounting plate 15. Furthermore, the slider 7 has an inverted T-shaped structure, the tail shaft 9 is provided at the large end of the slider 7, the slide slot is provided at the small end of the slider 7, and the setting track of the slide slot intersects with the arrangement track of the tail shaft 9 on the large end of the slider 7. In this embodiment, the guide vane 1 is in the shape of a wing. Embodiment 3

[0032] On the basis of the first or second embodiment, the crossflow disturbance air supply mechanical device includes: The transmission shaft 11 is rotatably connected to the bellows 18; a fan blade fixing device 14 is coaxially sleeved on the transmission shaft 11, and a plurality of fan blades 13 are inserted into the fan blade fixing device 14, and an air guide gap is reserved between adjacent fan blades 13; the transmission shaft 11 is connected to the driving shaft of the motor 12. The fan blade fixing device 14 includes end plates arranged opposite to each other, on which the transmission shaft 11 is arranged; and a positioning ring stage arranged at intervals between adjacent end plates, on which a plurality of penetration grooves for penetrating and limiting the fan blades 13 are arranged. In this embodiment, the fan blades 13 are strip-shaped blades, and the cross-section of the strip-shaped blades is an arc surface. The fan blades 13 are evenly arranged on the fan blade fixing device 14 in a clockwise or counterclockwise manner; the annular arrangement trajectory of the fan blades 13 is coaxially arranged on the fan blade fixing device 14 with the transmission shaft 11. Embodiment 4

[0033] An air supply method for a mechanical disturbance air supply system suitable for a closed cabin is implemented by using a mechanical disturbance air supply system suitable for a closed cabin in any one of Embodiments 1 to 3, and includes the following steps: When the periodic swing air supply mechanical device is working: the driving mechanism 10 drives the transmission shaft 1 3 on both sides to rotate according to the set angular velocity, driving the crank 5 connected to the transmission shaft 1 3 to rotate; The crank 5 drives the slider 7 to move up and down along the slide slot, and the slider 7 drives the tail shaft 9 to slide in the through slot 6; the tail shaft 9 drives the guide blade 1 to swing around the middle shaft 2 of the blade, changing the incident angle and guiding the air supply airflow. Embodiment 5

[0034] An air supply method for a mechanical disturbance air supply system suitable for a closed cabin is implemented by using a mechanical disturbance air supply system suitable for a closed cabin in any one of Embodiments 1 to 3, and includes the following steps: When the crossflow disturbance air supply mechanical device is working: the transmission shaft 11 is driven by the motor 12 to rotate at a set angular velocity; the fan blades 13 rotate to send fresh air into the cabin; and the swing cycle of the air supply is adjusted within a predetermined range. Embodiment 6

[0035] An air supply method for a mechanical disturbance air supply system suitable for a closed cabin is implemented by using a mechanical disturbance air supply system suitable for a closed cabin in any one of Embodiments 1 to 3, and includes the following steps: When the periodic swing air supply mechanical device is working: the driving mechanism 10 drives the transmission shaft 1 3 on both sides to rotate according to the set angular velocity, driving the crank 5 connected to the transmission shaft 1 3 to rotate; The crank 5 drives the slider 7 to move up and down along the slide slot, and the slider 7 drives the tail shaft 9 to slide in the through slot 6; the tail shaft 9 drives the guide blade 1 to swing around the middle shaft 2 of the blade, changing the incident angle and guiding the air supply airflow.

[0036] When the crossflow disturbance air supply mechanical device is working: the transmission shaft 11 is driven by the motor 12 to rotate at a set angular velocity; the fan blades 13 rotate to send fresh air into the cabin; and the swing cycle of the air supply is adjusted within a predetermined range. Embodiment 7

[0037] On the basis of any one of the embodiments one to six, the disturbance air supply mode is a louver type; or, the disturbance air supply mode is a cross-flow type; In this embodiment, a continuously variable transmission system in the prior art is adopted, and the continuously variable transmission system is controlled and connected with the rotating shaft of the driving mechanism, or the continuously variable transmission system is controlled and connected with the rotating shaft of the motor 12, and the continuously variable transmission system is used to adjust the rotation speed of the louver-type guide blades 1 and the fan blades 13 to achieve the disturbance air supply effect in the cabin. Embodiment 8

[0038] On the basis of the seventh embodiment, the continuously variable transmission system includes a flat cylindrical transmission wheel arranged on the left and right sides, and its angle is adjusted according to the actual situation. The flat cylindrical transmission wheel is transmitted to the conical shaft inside the conical transmission surface through the conical transmission surface arranged symmetrically from top to bottom. One conical shaft of the upper and lower conical shafts is connected to the inner shaft to drive the inner air supply blades, and the other conical shaft is connected to the outer shaft to drive the outer air supply blades; the angle of the flat cylindrical transmission wheel is adjusted according to the actual situation, and then the angular velocity of the upper and lower conical shafts can be arbitrarily changed within a certain range to realize the function of continuously variable transmission; the continuously variable transmission system is used to adjust the rotation speed of the louvered guide blade 1 and the fan blade 13 to reduce the large-scale circulation in the cabin, shorten the air age, and reduce the concentration of pollutants in the cabin, thereby achieving the purpose of improving the comfort level in the cabin. The motor adjusts the rotation speed of the guide blade 1 and the fan blade 13 respectively to disturb the air supply airflow.

[0039] Working principle: The present invention provides a mechanical disturbance air supply system and air supply method suitable for a closed cabin; it can form an efficient and safe flow field in the cabin, shorten the air age and weaken the influence of large-scale circulation in the cabin, so as to reduce the residence time of pollutants. By adjusting the rotation speed of the air supply blades through the periodic swing of the blades and the rotation of the crossflow fan, a uniform flow field in the cabin is obtained, and the problem of temperature stratification causing thermal discomfort is reduced. Through the periodic swing of the guide blades 1 or the different rotation angular velocities of the fan blades 3, the swinging blades disturb the flow field, and a uniform flow field in the cabin is obtained, and the problem of temperature stratification causing thermal discomfort is reduced; the large-scale circulation formed by the original air supply airflow and the passenger's thermal plume is destroyed, and the pollutant concentration is rapidly diluted. Shorten the air age, reduce the residence time of pollutants, and ultimately achieve control of pollutants.

[0040] Based on the ideal embodiment of the present invention, through the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A mechanical disturbance air supply system suitable for a closed cabin, comprising: A bellows (18), wherein an air cavity (19) is arranged in the bellows (18), and an air outlet and an air inlet which are in communication with the air cavity (19) are arranged on the bellows (18); characterized in that a periodic oscillating air supply mechanical device and a crossflow disturbance air supply mechanical device are arranged in the bellows (18); The periodic swing air supply mechanical device comprises: a mounting plate (15) fixedly arranged in a bellows (18); a swing air supply mechanism is arranged between the mounting plates (15) arranged at intervals; the swing air supply mechanism comprises a driving mechanism (10) arranged between the mounting plates (15); and a guide vane (1) swingably connected between the mounting plates (15); a tail shaft (9) is arranged on the guide vane (1); the tail shaft (9) is drivingly connected to the driving mechanism (10) via a slider (7) and a crank (5); and the tail shaft (9) is movably confined in a through slot (6) on the mounting plate (15).

2. A mechanical disturbance air supply system suitable for a closed cabin according to claim 1, characterized in that: A plurality of guide blades (1) are arranged at intervals and combined via a spacing plate (16), and guide gaps are reserved between adjacent guide blades (1).

3. A mechanical disturbance air supply system suitable for a closed cabin according to claim 2, characterized in that: The two ends of the guide blade (1) are rotatably connected to the bearings (4) of the mounting plate (15) via the blade middle rotating shaft (2); the transmission shaft (3) of the drive mechanism (10) is rotatably connected to the mounting plate (15) via the bearing, and the transmission shaft (3) is movably passed through the mounting plate (15) and connected to one end of the crank (5); A synchronizing plate (17) and a sliding block (7) are respectively provided on the inner side and the outer side of the mounting plate (15). The tail rotating shafts (9) at both ends of the plurality of guide blades (1) are movable from inside to outside through the rotating hole 1 of the synchronization plate (17) on both sides, the through groove (6) of the mounting plate (15), and the rotating hole 2 of the slider (7); The tail rotating shaft (9) of the guide vane (1) is movably connected to one end of the sliders (7) on both sides respectively, and the other end of the slider (7) is provided with a slide groove, and the other end of the crank (5) is slidably confined in the slide groove.

4. A mechanical disturbance air supply system suitable for a closed cabin according to claim 2, characterized in that: The slider (7) has an inverted T-shaped structure, the tail shaft (9) is arranged at the large end of the slider (7), the slide groove is arranged at the small end of the slider (7), and the arrangement track of the slide groove intersects with the arrangement track of the tail shaft (9) on the large end of the slider (7).

5. A mechanical disturbance air supply system suitable for a closed cabin according to claim 4, characterized in that: The crossflow disturbance air supply mechanical device comprises a second transmission shaft (11) rotatably connected to the wind box (18); a blade fixing device (14) is coaxially sleeved on the second transmission shaft (11), a plurality of blades (13) are inserted through the blade fixing device (14), and air guide gaps are reserved between adjacent blades (13); the second transmission shaft (11) is connected to a driving shaft of a motor (12).

6. A mechanical disturbance air supply system suitable for a closed cabin according to claim 5, characterized in that: The fan blade fixing device (14) comprises end plates arranged opposite to each other, the transmission shaft 2 (11) being arranged on the end plates; and positioning ring platforms arranged at intervals between adjacent end plates, the ring platforms being provided with a plurality of penetration grooves for penetrating and limiting the fan blades (13).

7. A mechanical disturbance air supply system suitable for a closed cabin according to claim 6, characterized in that: The fan blades (13) are strip-shaped blades, and the cross-section of the strip-shaped blades is an arc surface. The fan blades (13) are evenly arranged on the fan blade fixing device (14) in a clockwise or counterclockwise manner; The annular arrangement track of the fan blades (13) is coaxially arranged with the second transmission shaft (11) on the fan blade fixing device (14).

8. The mechanical disturbance air supply system suitable for a closed cabin according to claim 7, characterized in that: The wind box (18) is provided with an air guiding inclined surface, and the air outlet is provided on the air guiding inclined surface; And / or, the cross-flow disturbance air supply mechanical device is arranged in the air cavity (19), and the cross-flow disturbance air supply mechanical device is located at the air inlet.

9. A mechanical disturbance air supply system suitable for a closed cabin according to claim 8, characterized in that: The included angle between the wind guide inclined surface and the bottom surface of the wind box (18) is 130° to 170°; And / or, the guide vane (1) is in the shape of a wing.

10. An air supply method for a mechanical disturbance air supply system in a closed cabin, characterized in that: The mechanical disturbance air supply system suitable for a closed cabin as claimed in any one of claims 1 to 9 is implemented, comprising the following steps: When the periodic oscillating air supply mechanical device is in operation: the driving mechanism (10) drives the transmission shafts (3) on both sides to rotate at a set angular velocity, thereby driving the crank (5) connected to the transmission shaft (3) to rotate; The crank (5) drives the slider (7) to move up and down along the slide groove, and the slider (7) drives the tail rotating shaft (9) to slide in the through groove (6); the tail rotating shaft (9) drives the guide blade (1) to swing around the blade middle rotating shaft (2), thereby changing the incident angle and guiding the air supply airflow; and / or, When the crossflow disturbance air supply mechanical device is in operation: the motor (12) drives the transmission shaft 2 (11) to rotate at a set angular velocity; the fan blades (13) rotate to send fresh air into the cabin; and the swing cycle of the air supply is adjusted within a predetermined range.

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