Onboard evaporative air duct and onboard auxiliary cooling system

Abstract

The present application provides an airborne evaporative air duct and an airborne auxiliary cooling system. The airborne evaporative air duct comprises an air duct body and an air guide vane arranged in the air duct body, an air inlet is arranged at the bottom of the air duct body, an air outlet is arranged at the top of the air duct body, an evaporator mounting position is arranged at the air outlet, the air guide vane can be rotatably arranged between the evaporator mounting position and the air inlet, when the air guide vane is in a first rotation position, it can block the passage of the air duct body and guide the condensed water falling on the air guide vane to the inner wall of the air duct body, when the air guide vane is in a second rotation position, it can open the passage of the air duct body and guide the airflow entering the air inlet. According to the airborne evaporative air duct of the present application, it is possible to prevent the condensed water from being directly discharged from the air inlet of the evaporative air duct, thereby improving the drainage effect of the condensed water.

Description

Technical Field

[0001] The present application relates to the technical field of aircraft air conditioning, and in particular to an airborne evaporative air duct and an airborne auxiliary cooling system. Background Art

[0002] The onboard air conditioning system can be divided into the main air conditioning system, which is the external ram air introduced by the aircraft engine, expanded and adjusted to the desired temperature by the aircraft air conditioning system (environmental control system), and the auxiliary cooling air conditioning system, which plays an auxiliary role in regulating the air inside the aircraft. After the two different air streams are conditioned to form air with different temperatures, humidity and flow rates, they are mixed and sent to the aircraft's cabin, cargo hold and its ancillary areas and other areas that require air conditioning.

[0003] The onboard auxiliary cooling system is the only cooling system before the aircraft takes off. Different from the aircraft environmental control system, the onboard auxiliary cooling system uses conventional fluorine refrigeration solutions such as compressors and heat exchangers. Limited by the aircraft layout, the various parts of the air conditioning system are located in different positions of the aircraft, and a modular assembly solution is adopted to facilitate after-sales. Therefore, the auxiliary cooling air conditioning system consists of a compressor unit, a condensing air duct unit, an evaporation unit, a controller unit, etc., and each unit is connected by a quick connector.

[0004] As for the evaporation unit, it includes an evaporator. During the operation of the evaporator, the temperature of the evaporator is low, condensed water is continuously formed, and then frost blocks the evaporator, so that the air cannot pass through the evaporator for cooling. For the refrigeration system, common condensed water discharge methods include: gravity self-flow method, water seal method, and mechanical lifting method. However, due to the change of the flight state of the aircraft, the tilt angle will change when it is in different flight states. When it is in a certain tilt angle range, the condensed water will drip from the middle of the evaporator and fly out directly from the air inlet of the evaporation air duct to other positions of the aircraft, resulting in poor drainage effect of the condensed water. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present application is to provide an airborne evaporative air duct and an airborne auxiliary cooling system, which can prevent condensed water from being directly discharged from the air inlet of the evaporative air duct and improve the drainage effect of condensed water.

[0006] In order to solve the above-mentioned problems, the present application provides an airborne evaporative duct, including a duct body and air guide blades arranged in the duct body, the duct body is provided with an air inlet at the bottom, the duct body is provided with an air outlet at the top, an evaporator mounting position is provided at the air outlet, and the air guide blades can be rotatably arranged between the evaporator mounting position and the air inlet. When the air guide blades are in a first rotation position, they can block the channel of the duct body and guide the condensed water falling on the air guide blades to the inner wall of the duct body. When the air guide blades are in a second rotation position, they can open the channel of the duct body and guide the airflow entering from the air inlet.

[0007] Preferably, the wind guiding blades are arranged on one side of the air duct body close to the evaporator installation position.

[0008] Preferably, the wind guiding blades can open the channel of the air duct body under the action of wind when air is entering the air inlet, and can block the channel of the air duct body under the action of gravity when no air is entering the air inlet.

[0009] Preferably, mounting seats are provided on two opposite side walls of the air duct body, and both ends of the wind guiding blades are rotatably mounted on the mounting seats via a rotating shaft.

[0010] Preferably, there are at least two wind guide and flow guiding blades, each of which includes a gravity end located on a first side of the rotating shaft and an overlap end located on a second side of the rotating shaft, and the gravity end of the wind guide and flow guiding blade is overlapped on the overlap end of an adjacent wind guide and flow guiding blade in sequence.

[0011] Preferably, the width of the gravity end along the radial direction of the rotating shaft is 3 to 10 times the width of the overlap end along the radial direction of the rotating shaft.

[0012] Preferably, the wind guide and flow diversion blades are overlapped together to form a closed flow diversion slope.

[0013] Preferably, the guide slope is a plane; or, a guide groove is formed between the gravity end and the overlapping end of adjacent wind guide and flow guiding blades, and the guide groove is inclined downward.

[0014] Preferably, the guide surface of the wind guide and flow guiding blade is rectangular, and the cross section of the wind guide and flow guiding blade is streamlined.

[0015] Preferably, the wind guiding blades are hollow in structure.

[0016] Preferably, the wind guide and flow diversion blades are made of lightweight material; and / or, the wind guide and flow diversion blades are integrally formed.

[0017] Preferably, a limiting boss is further provided on the side wall of the air duct body, the limiting boss is located on the rotation path of the wind guiding blades, the height of the limiting boss matches the height of the mounting seat, and the wind guiding blades can overlap on the limiting boss.

[0018] Preferably, the mounting seat includes a protrusion and a buckle arranged on the protrusion, and the rotating shaft can be rotatably mounted in the buckle.

[0019] Preferably, the buckle is provided with a V-shaped guide portion at the opening.

[0020] Preferably, an annular groove is provided on the rotating shaft, and the buckle is clamped in the annular groove.

[0021] Preferably, an annular stop structure is provided at the air inlet, and the annular stop structure is used to stop condensed water flowing through the inner wall of the air duct body. A drainage hole is provided at the bottom of the air duct body near the annular stop structure.

[0022] Preferably, the air inlet is circular and the air outlet is rectangular.

[0023] Preferably, the air inlet direction of the air inlet and the air outlet direction of the air outlet form an angle of 45° to 75°.

[0024] Preferably, the air duct body has a smooth transition between the air inlet and the air outlet.

[0025] According to another aspect of the present application, an airborne auxiliary cooling system is provided, comprising an airborne evaporative air duct, wherein the airborne evaporative air duct is the airborne evaporative air duct mentioned above.

[0026] The airborne evaporative air duct provided in the present application comprises an air duct body and air guide blades arranged in the air duct body, an air inlet is arranged at the bottom of the air duct body, an air outlet is arranged at the top of the air duct body, an evaporator mounting position is arranged at the air outlet, and the air guide blades can be rotatably arranged between the evaporator mounting position and the air inlet. When the air guide blades are in a first rotation position, they can block the channel of the air duct body and guide the condensed water falling on the air guide blades to the inner wall of the air duct body. When the air guide blades are in a second rotation position, they can open the channel of the air duct body and guide the airflow entering from the air inlet. The onboard evaporator duct is provided with air guide and drainage blades on the lower side of the evaporator mounting position where the evaporator is mounted, and the air guide and drainage blades are enabled to rotate. The function of the air guide and drainage blades can be adjusted by adjusting the rotation position of the air guide and drainage blades, so that after the evaporator fan is turned off, the air guide and drainage blades block the channel of the duct body, so that condensed water on the evaporator is drained to the inner wall of the duct along the surface of the air guide and drainage blades, and is discharged after being collected at the bottom of the duct. When the evaporator fan is running, the air guide and drainage blades open the channel of the duct body, play a guiding role for the airflow entering the duct from the air inlet, so that the airflow distribution on the surface of the evaporator is more uniform. When the air guide and drainage blades block the channel of the duct body, the condensed water dripping from the evaporator will fall on the air guide and drainage blades and cannot flow out directly from the air inlet. Therefore, it can be prevented that the condensed water is directly discharged from the air inlet of the evaporator duct, thereby improving the drainage effect of the condensed water. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of an airborne evaporation duct according to an embodiment of the present application;

[0028] Figure 2 This is a schematic diagram of the top view of the airborne evaporation duct according to one embodiment of the present application;

[0029] Figure 3 This is a schematic cross-sectional structural diagram of an airborne evaporation duct according to an embodiment of the present application;

[0030] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at C;

[0031] Figure 5 This is a first state structural diagram of an airborne evaporation duct according to an embodiment of the present application;

[0032] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at D

[0033] Figure 7 A second state structural diagram of an airborne evaporation duct according to an embodiment of the present application;

[0034] Figure 8 A three-dimensional structural diagram of an air guide vane of an airborne evaporative air duct according to an embodiment of the present application;

[0035] Fig. 9 This is a schematic structural diagram of the air guide blades of an airborne evaporative air duct according to an embodiment of the present application.

[0036] The reference numerals are as follows:

[0037] 1. Air duct body; 2. Air guide blades; 3. Air inlet; 4. Air outlet; 5. Evaporator installation position; 6. Rotating shaft; 7. Gravity end; 8. Overlap end; 9. Limiting boss; 10. Bump; 11. Buckle; 12. Annular groove; 13. V-shaped guide; 14. Annular stop structure; 15. Drain hole. DETAILED DESCRIPTION

[0038] See also Figures 1 to 9As shown, according to an embodiment of the present application, the airborne evaporative air duct includes an air duct body 1 and air guide blades 2 arranged in the air duct body 1, an air inlet 3 is arranged at the bottom of the air duct body 1, an air outlet 4 is arranged at the top of the air duct body 1, an evaporator mounting position 5 is arranged at the air outlet 4, and the air guide blades 2 can be rotatably arranged between the evaporator mounting position 5 and the air inlet 3. When the air guide blades 2 are in a first rotation position, they can block the channel of the air duct body 1 and guide the condensed water falling on the air guide blades 2 to the inner wall of the air duct body 1. When the air guide blades 2 are in a second rotation position, they can open the channel of the air duct body 1 and guide the airflow entering from the air inlet 3.

[0039] The onboard evaporation duct is provided with an air guide and drainage blade 2 at the lower side of the evaporator mounting position 5 where the evaporator is mounted, and the air guide and drainage blade 2 is enabled to rotate. The function of the air guide and drainage blade 2 can be adjusted by adjusting the rotation position of the air guide and drainage blade 2, so that after the evaporation fan is turned off, the air guide and drainage blade 2 blocks the channel of the duct body 1, so that the condensed water on the evaporator is drained to the inner wall of the duct along the surface of the air guide and drainage blade 2 and is discharged after being collected at the bottom of the duct. When the evaporation fan is running, the air guide and drainage blade 2 opens the channel of the duct body 1, and plays a guiding role for the air flow entering the air duct from the air inlet 3, so that the air flow distribution on the evaporator surface is more uniform and the heat exchange efficiency is higher; when the air guide and drainage blade 2 blocks the channel of the duct body 1, the condensed water dripping from the evaporator will fall on the air guide and drainage blade 2 and cannot flow out directly from the air inlet 3. Therefore, it is possible to prevent the condensed water from being directly discharged from the air inlet 3 of the evaporation duct, thereby improving the drainage effect of the condensed water.

[0040] The present application provides the wind guide and drainage blades 2 and enables the wind guide and drainage blades 2 to have different rotation positions, thereby meeting the drainage requirements of any flight posture during normal flight of the aircraft, and the drainage is more reliable.

[0041] In one embodiment, the air guiding blades 2 are arranged on one side of the air duct body 1 close to the evaporator mounting position 5, which can shorten the distance for condensed water to drip from the evaporator to the surface of the air guiding blades 2, thereby reducing the noise of condensed water dripping.

[0042] In one embodiment, the air guiding blades 2 can open the passage of the air duct body 1 under the action of wind force when air enters the air inlet 3, and can block the passage of the air duct body 1 under the action of gravity when no air enters the air inlet 3. In this embodiment, the rotation of the air guiding blades 2 is controlled by wind force and its own gravity, so there is no need to add an additional power mechanism, and the air guiding blades 2 will automatically open under the action of wind force when air enters the air inlet 3, so it can effectively overcome the problem that the drainage device in the related art has the problem of being set at the bottom of the evaporator to hinder the flow of airflow, resulting in uneven airflow at the bottom of the evaporator and low efficiency.

[0043] In other embodiments, the air guide vane 2 may also be connected to a driving mechanism, and the driving mechanism controls the action position of the air guide vane 2. The driving mechanism is, for example, a driving motor. The rotation position control of the air guide vane 2 is performed by the driving mechanism, so that the active control of the rotation position of the air guide vane 2 can be achieved, the control is more precise, and the position of the air guide vane 2 can be forced to be limited when necessary, which can effectively meet the special control requirements of the air guide vane 2.

[0044] In order to avoid interference between the air guiding blade 2 and the evaporator during rotation, the distance between the air guiding blade 2 and the bottom of the evaporator should be greater than the height of the air guiding blade 2 when it is fully erected.

[0045] The air outlet of the onboard evaporation air duct is provided with a mounting surface for mounting the evaporator, a folding plate folded toward the outer periphery is provided at the mounting surface, a mounting hole is provided on the folding plate, the evaporator has a mounting side, the mounting side of the evaporator is also provided with a mounting hole, after the mounting holes on the mounting side of the evaporator are aligned with the mounting holes on the folding plate, they are connected by screws, so that the evaporator is installed in the evaporator mounting position 5. Since the evaporator is installed and fixed by the folding plate, the part of the evaporator located in the evaporator mounting position 5 can be suspended, and there is no need to set a supporting structure, etc., and there will be no obstruction to the air inlet side of the evaporator, so that the heat exchange area of ​​the evaporator can be more effectively increased, and the heat exchange efficiency of the evaporator can be improved.

[0046] An inlet and outlet pipe fixing hole is provided on the side wall of the evaporator mounting position 5, a concave groove is provided on the inlet and outlet pipe fixing hole, a rubber ring is provided on the inlet and outlet pipe, and the rubber ring is installed in the concave groove, thereby realizing a sealed connection between the evaporator mounting position 5 and the inlet and outlet pipes of the evaporator.

[0047] In a real time, mounting seats are provided on two opposite side walls of the air duct body 1, and both ends of the air guide and flow guiding blade 2 are rotatably mounted on the mounting seats through the rotating shaft 6. The rotating shaft 6 and the air guide and flow guiding blade 2 may be fixedly connected or relatively rotatably connected. When the rotating shaft 6 and the air guide and flow guiding blade 2 are fixedly connected, the rotating shaft 6 and the mounting seat are rotatably connected, thereby ensuring that the air guide and flow guiding blade 2 can rotate freely to realize the control of opening or closing the channel. When the rotating shaft 6 and the air guide and flow guiding blade 2 are rotatably connected, the rotating shaft 6 and the mounting seat may be rotatably connected or fixedly connected.

[0048] In one embodiment, there are at least two wind guide and flow diversion blades 2, each of which includes a gravity end 7 located on the first side of the rotating shaft 6 and a lap end 8 located on the second side of the rotating shaft 6, and the gravity end 7 of the wind guide and flow diversion blade 2 is overlapped on the lap end 8 of the adjacent wind guide and flow diversion blade 2 in sequence.

[0049] In this embodiment, the windward surface area of ​​the gravity end 7 is larger than the windward surface area of ​​the overlap end 8, so that when air enters the air inlet 3, the wind force acting on the gravity end 7 is larger than the wind force acting on the overlap end 8, and the passage of the evaporation air duct is smoothly opened to achieve smooth airflow diversion. As a preferred embodiment, the windward surface area of ​​the gravity end 7 is more than 3 times the windward surface area of ​​the overlap end 8.

[0050] The gravity of the gravity end 7 must be greater than the gravity of the overlapping end 8, so as to ensure that when no air enters the air inlet 3, the gravity of the gravity end 7 can overcome the gravity of the overlapping end 8, thereby falling down and overlapping with the overlapping end 8 of the adjacent wind guide blade 2, thereby closing the channel of the evaporation air duct.

[0051] In one embodiment, in order to ensure the windward surface of the gravity end 7 and avoid the gravity end 7 being too wide to form a large gravity, which affects the smooth driving of the wind, the width of the gravity end 7 along the radial direction of the rotating shaft 6 is 3 to 10 times the width of the lap end 8 along the radial direction of the rotating shaft 6.

[0052] In one embodiment, the wind guide blades 2 are overlapped together to form a closed guide slope, so that the condensed water can flow along the continuous guide slope to the inner wall of the air duct, and then flow to the drainage hole 15 at the bottom of the airborne evaporation air duct under the action of gravity for discharge.

[0053] In one embodiment, the diversion slope is a plane, thereby ensuring that the condensed water has better flow continuity. In this embodiment, the lower surface of the gravity end 7 and the upper surface of the lap end 8 need to be specially designed, so that the lower surface of the gravity end 7 has a structure that matches the upper surface of the lap end 8 at the position where it cooperates with the upper surface of the lap end 8, so that the two fit well together, so that the upper surface of the gravity end 7 and the upper surface of the lap end 8 are in contact at the connection position and have the same height.

[0054] In one embodiment, a guide groove is formed between the gravity end 7 and the overlap end 8 of the adjacent wind guide and flow guiding blades 2, and the guide groove is inclined downward. In this embodiment, the wind guide and flow guiding blades 2 can be inclined or horizontal in the width direction. When the water flow reaches the guide groove, it flows along the guide groove to the inner wall of the air duct, and then flows downward along the inner wall of the air duct.

[0055] In one embodiment, the guide surface of the wind guide blade 2 is rectangular, and the cross-section of the wind guide blade 2 is streamlined, thereby effectively reducing wind resistance and improving the guide effect.

[0056] In one embodiment, the air guiding blade 2 is a hollow structure. In this embodiment, the hollow structure of the air guiding blade 2 can reduce the weight of the air guiding blade 2, so that the air guiding blade 2 has a lighter weight and can obtain a larger windward surface, which can be better driven by the airflow of the air inlet 3. The hollow structure of the air guiding blade 2 is a fully enclosed structure to prevent condensed water from entering, and also prevent airflow from entering to affect the air outlet efficiency.

[0057] In one embodiment, the upper surface and the lower surface of the gravity end 7 intersect at a sharp angle, that is, the angle formed by the upper surface and the lower surface at the intersection is less than or equal to 20°, thereby reducing the airflow resistance and reducing the overall thickness after the gravity end 7 and the lap end 8 are overlapped.

[0058] In one embodiment, the wind guiding blades 2 are made of a lightweight material, which can reduce the weight of the wind guiding blades 2 and enable the wind guiding blades 2 to be more easily blown by the airflow.

[0059] In one embodiment, the wind guiding blades 2 are integrally formed, and the structural integrity is better.

[0060] The wind guide blades 2 can be integrally formed by using composite materials or aluminum alloy through 3D printing.

[0061] In one embodiment, a limiting boss 9 is further provided on the side wall of the air duct body 1. The limiting boss 9 is located on the rotation path of the air guide and flow guiding blade 2. The height of the limiting boss 9 matches the height of the mounting seat, and the air guide and flow guiding blade 2 can overlap on the limiting boss 9. In this embodiment, the limiting boss 9 is located on a side wall of the air duct body and on the movement path of the end position of the gravity end 7 of the air guide and flow guiding blade 2 closest to the limiting boss 9. When the gravity end 7 of the air guide and flow guiding blade 2 falls, the gravity end 7 can be supported, so that other air guide and flow guiding blades 2 can be supported by the air guide and flow guiding blade 2, thereby ensuring that all blade supports are opened upwards, and will not be opened downwards, ensuring the orderly operation of the air guide and flow guiding blade 2.

[0062] The other wind guide blades 2 are overlapped and installed with the wind guide blade 2 at this position in sequence, so that the installed wind guide blades 2 can be opened smoothly without touching the lower surface of the evaporator when opened, and can form a closed slope on the lower surface of the evaporator after closing.

[0063] In one embodiment, the mounting seat includes a protrusion 10 and a buckle 11 disposed on the protrusion 10, and the rotating shaft 6 can be rotatably mounted in the buckle 11. In this embodiment, the mounting seat is disposed on two opposite side walls of the evaporation air duct, and the mounting seat on the same side can be an integral structure, or one buckle 11 can correspond to one mounting seat, and the buckle 11 is provided at both ends of the rotating shaft 6, and can limit the installation of the rotating shaft 6. The buckle 11 is a round hole structure, and has an opening at the top, which is convenient for limiting the rotating shaft 6 after it is inserted, and can not limit the rotation of the rotating shaft 6 after the rotating shaft 6 is inserted.

[0064] In one embodiment, the buckle 11 is provided with a V-shaped guide portion 13 at the opening. The opening of the V-shaped guide portion 13 faces upward, which can guide the installation of the rotating shaft 6, reduce the installation difficulty of the rotating shaft 6, and improve its installation efficiency.

[0065] The bottom of the mounting seat and the inner wall of the air duct have a uniform transition, which can reduce the resistance of the mounting seat and improve the smoothness of the air flow.

[0066] In one embodiment, an annular groove 12 is provided on the rotating shaft 6 , and the buckle 11 is clamped in the annular groove 12 , so that the axial position of the rotating shaft 6 can be limited by utilizing the cooperation between the annular groove 12 and the buckle 11 .

[0067] In one embodiment, an annular stop structure 14 is provided at the air inlet 3, and the annular stop structure 14 is used to stop the condensed water flowing through the inner wall of the air duct body 1, and a drain hole 15 is provided at the bottom position of the air duct body 1 near the annular stop structure 14. In this embodiment, the annular stop structure 14 forms a backwater bay at the air inlet position, and can collect condensed water without setting a water receiving tray. The bottom of the annular stop structure 14 is provided with a drain hole 15, and the condensed water collected at the backwater bay can be discharged through the drain hole 15 in time. The drain hole 15 is a circular drain hole, and the number thereof is not limited, as long as it can meet the drainage needs in extreme cases. The other end of the drain hole 15 is connected to a drain pipe, which can lead the condensed water to a specific position of the aircraft.

[0068] In one embodiment, the air inlet 3 is circular and the air outlet 4 is rectangular. The use of the operating air inlet 3 can facilitate the design of a return bay around the air outlet for condensed water to collect from the inner surface of the air duct, and the use of the rectangular air outlet 4 can better adapt to the rectangular evaporator.

[0069] In one embodiment, the air inlet direction of the air inlet 3 and the air outlet direction of the air outlet 4 form an angle of 45° to 75°.

[0070] The air duct body 1 has a smooth transition between the air inlet 3 and the air outlet 4.

[0071] Preferably, the two air outlets are at an angle of 60° and are connected by a smooth transition in the middle, which can ensure that the wind resistance of the air duct is small and the airflow distribution on the heat exchange surface of the evaporator is more uniform.

[0072] When the air conditioning system needs to remove moisture and defrost, the evaporator fan is turned off, and the wind guide vane 2 is closed under the action of gravity. Before the aircraft takes off or during level flight, the air inlet 3 of the onboard evaporative air duct faces the right, and the air inlet plane of the air inlet 3 is a vertical plane, and the nose of the aircraft faces horizontally. Figure 5 The figure shows the position of the evaporation duct in the extreme case of the nose facing downward at 45°, which is used to simulate drainage in extreme cases. The duct is in a more favorable position for drainage under other normal flight postures of the aircraft. Here, only the drainage scheme under extreme cases is introduced. After the defrosting condition is turned on, the evaporation fan stops, and the air guide blades 2 are closed under the action of gravity, and overlapped in sequence to form a closed inclined surface. The condensed water is separated from the lower surface of the evaporator under the action of gravity. After the condensed water in the middle drips onto the closed inclined surface formed by the air guide blades 2, it flows to the inner wall of the duct where the limiting boss 9 is located, or to the inner wall of the duct on one side where the mounting seat is located. The aircraft is tilted, and together with other condensed water dripping onto the inner wall of the duct, it flows down along the inner wall of the duct to the bottom return water bay and is discharged through the drainage hole 15.

[0073] After defrosting is completed, the condensed water on the evaporator surface has been drained, and the evaporator fan is turned on. The wind guide blade 2 is opened under the action of wind. At this time, the evaporator air duct assembly is in the state of Figure 7 As shown. Under the action of the evaporating fan, the air guide blade 2 is in a vertical upward position along the wind direction, and the air in the cabin is sucked in through the air duct inlet 3, passes through the guide channel of the air guide blade 2 in turn, flows through the evaporator for cooling, and is then transported to the cabin through the air duct.

[0074] According to an embodiment of the present application, the onboard auxiliary cooling system includes an onboard evaporative air duct, which is the above-mentioned onboard evaporative air duct.

[0075] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0076] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. An airborne evaporation duct, characterized in that: The invention comprises an air duct body (1) and air guide blades (2) arranged in the air duct body (1); an air inlet (3) is arranged at the bottom of the air duct body (1); an air outlet (4) is arranged at the top of the air duct body (1); an evaporator mounting position (5) is arranged at the air outlet (4); the air guide blades (2) can be rotatably arranged between the evaporator mounting position (5) and the air inlet (3); when the air guide blades (2) are in a first rotation position, they can block the passage of the air duct body (1) and guide condensed water falling on the air guide blades (2) to the inner wall of the air duct body (1); when the air guide blades (2) are in a second rotation position, they can open the passage of the air duct body (1) and guide the airflow entering through the air inlet (3).

2. The airborne evaporation duct according to claim 1, characterized in that: The air guiding blades (2) are arranged on a side of the air duct body (1) close to the evaporator installation position (5).

3. The airborne evaporation duct according to claim 1, characterized in that: The wind guiding blades (2) can open the passage of the air duct body (1) under the action of wind force when air is entering the air inlet (3), and can block the passage of the air duct body (1) under the action of gravity when air is not entering the air inlet (3).

4. The airborne evaporation duct according to claim 1, characterized in that: Mounting seats are provided on two opposite side walls of the air duct body (1), and both ends of the air guide and flow diversion blades (2) are rotatably mounted on the mounting seats via a rotating shaft (6).

5. The airborne evaporation duct according to claim 4, characterized in that: There are at least two wind guide and flow guiding blades (2), each wind guide and flow guiding blade (2) comprising a gravity end (7) located on a first side of the rotating shaft (6) and a lap end (8) located on a second side of the rotating shaft (6), and the gravity end (7) of the wind guide and flow guiding blade (2) is sequentially lapped on the lap end (8) of an adjacent wind guide and flow guiding blade (2).

6. The airborne evaporation duct according to claim 5, characterized in that: The width of the gravity end (7) in the radial direction of the rotating shaft (6) is 3 to 10 times the width of the overlap end (8) in the radial direction of the rotating shaft (6).

7. The airborne evaporation duct according to claim 5, characterized in that: The wind guide and flow diversion blades (2) are overlapped together to form a closed flow diversion inclined surface.

8. The airborne evaporation duct according to claim 7, characterized in that: The guide slope is a plane; or, a guide groove is formed between the gravity end (7) and the overlap end (8) of the adjacent wind guide and flow guiding blades (2), and the guide groove is inclined downward.

9. The airborne evaporation duct according to claim 3, characterized in that: The guide surface of the wind guide and flow guiding blade (2) is rectangular, and the cross section of the wind guide and flow guiding blade (2) is streamlined.

10. The airborne evaporation duct according to claim 9, characterized in that: The wind guiding blades (2) are hollow in structure.

11. The airborne evaporation duct according to claim 3, characterized in that: The wind guiding and flow directing blades (2) are made of a lightweight material; and / or the wind guiding and flow directing blades (2) are integrally formed.

12. The airborne evaporation duct according to claim 4, characterized in that: A limiting boss (9) is also provided on the side wall of the air duct body (1); the limiting boss (9) is located on the rotation path of the air guide blade (2); the height of the limiting boss (9) matches the height of the mounting seat; the air guide blade (2) can overlap the limiting boss (9).

13. The airborne evaporation duct according to claim 4, characterized in that: The mounting seat comprises a convex block (10) and a buckle (11) arranged on the convex block (10), and the rotating shaft (6) can be rotatably mounted in the buckle (11).

14. The airborne evaporation duct according to claim 13, characterized in that: The buckle (11) is provided with a V-shaped guide portion (13) at the opening.

15. The airborne evaporation duct according to claim 13, characterized in that: The rotating shaft (6) is provided with an annular groove (12), and the buckle (11) is clamped in the annular groove (12).

16. The airborne evaporation duct according to claim 1, characterized in that: An annular stop structure (14) is provided at the air inlet (3), and the annular stop structure (14) is used to stop condensed water flowing through the inner wall of the air duct body (1), and a drainage hole (15) is provided at the bottom of the air duct body (1) close to the annular stop structure (14).

17. The airborne evaporation duct according to claim 1, characterized in that: The air inlet (3) is circular, and the air outlet (4) is rectangular.

18. The airborne evaporation duct according to claim 1, characterized in that: The air inlet direction of the air inlet (3) and the air outlet direction of the air outlet (4) form an angle of 45° to 75°.

19. The airborne evaporation duct according to claim 1, characterized in that: The air duct body (1) has a smooth transition between the air inlet (3) and the air outlet (4).

20. An airborne auxiliary cooling system, comprising an airborne evaporative air duct, characterized in that: The airborne evaporation duct is the airborne evaporation duct according to any one of claims 1 to 19.

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