Air duct, air conditioning system and aircraft

Abstract

The present invention provides an air duct, an air conditioning system and an aircraft. The air duct includes: a duct body and a partition plate. The partition plate is arranged in the duct body to divide the flow passage of the duct body into an independent first flow passage and a second flow passage; wherein, the duct body has a first end and a second end arranged oppositely. The first flow passage has a first air inlet and a first air outlet. The first air inlet is located at the first end of the duct body, and the first air outlet is located between the first end and the second end of the duct body; the second flow passage has a second air inlet and a second air outlet. The second air inlet is arranged at an interval from the first air outlet, and the second air outlet is located on the side of the second air inlet away from the first air outlet. To solve the technical problem of pressure loss of the air flow in the air duct in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of airborne air conditioning systems, and more particularly, to an air duct, an air conditioning system, and an aircraft. Background Art

[0002] At present, the airborne air conditioning system in the prior art may include a main air conditioning system that is expanded and adjusted to a desired temperature by the aircraft air conditioning system (environmental control system) and an auxiliary cooling air conditioning system that adjusts the air inside the aircraft to play an auxiliary adjustment role. After the two different airflows are adjusted to form air with different temperatures, different humidities, and different flow rates, they are mixed and then sent to areas that require air conditioning, such as the passenger cabin, cargo hold, and their affiliated areas of the aircraft. Generally, the mixing air ducts used in the airborne air conditioning system all pass through the same air duct, are mixed in a specific air duct, and are then connected to multiple duct systems and sent to various areas of the cabin that require air conditioning.

[0003] However, after the two airflows with different flow rates (flow velocities) are mixed in the mixing air duct, they collide, mix, and intertwine with each other, resulting in a huge pressure loss. Moreover, after the two airflows with different temperatures and humidities are mixed in the same air duct, water mist, liquid water condensation, or ice and snow are formed, increasing the air resistance and requiring an additional water drainage and diversion or defrosting and deicing device to be designed for the air duct. This will cause the structure of the air duct to be complex, resulting in a large and bulky volume. In addition, due to the pressure loss in the mixing air duct, it must be compensated by a high-capacity blower, which requires the blower to be designed to have the characteristics of high static pressure and high power, and also increases the difficulty of the blower selection design. Summary of the Invention

[0004] The main object of the present invention is to provide an air duct, an air conditioning system, and an aircraft to solve the technical problem of pressure loss of the air flow in the air duct in the prior art.

[0005] To achieve the above object, according to one aspect of the present invention, there is provided an air duct, including: a duct body and a partition plate. The partition plate is disposed in the duct body to divide the flow passage of the duct body into independent first and second flow passages; wherein, the duct body has a first end and a second end disposed opposite to each other. The first flow passage has a first air inlet and a first air outlet. The first air inlet is located at the first end of the duct body, and the first air outlet is located between the first end and the second end of the duct body. The second flow passage has a second air inlet and a second air outlet. The second air inlet is spaced from the first air outlet, and the second air outlet is located on the side of the second air inlet away from the first air outlet.

[0006] Further, the first air inlet extends along a first preset direction, the second air inlet extends along a second preset direction, and the first preset direction and the second preset direction are connected at a preset angle.

[0007] Further, the duct body includes: a main duct section, which is a strip-shaped duct structure and extends along a third preset direction. The main channels of the first flow channel and the second flow channel are both located within the main duct section. The partition plate is located within the main duct section. One end of the main duct section forms a first air inlet, and the second air inlet is located between one end and the other end of the main duct section; a first branch duct, which is provided on the side of the main duct section and is connected to the main duct section at a fourth preset angle. The first branch duct communicates with the main channel of the first flow channel, and one end of the first branch duct away from the main duct section forms a first air outlet.

[0008] Further, there are multiple first branch ducts, and the multiple first branch ducts are arranged at intervals on the side wall of the main duct section.

[0009] Further, there are two first branch ducts, and the two first branch ducts are symmetrically arranged with respect to the main duct section. The air guide duct further includes: a first spoiler, which is arranged within the main channel of the first flow channel and extends along the extension direction of the main duct section. One first branch duct is located on one side of the first spoiler, and the other first branch duct is located on the other side of the first spoiler.

[0010] Further, along the extension direction of the main duct section, the spoiler thickness of the first spoiler gradually increases.

[0011] Further, the air guide duct further includes: a second branch duct, which is provided on the side of the main duct section and is connected to the main duct section at a fifth preset angle. The second branch duct communicates with the main channel of the second flow channel, and one end of the second branch duct away from the main duct section forms a second air outlet.

[0012] Further, there are multiple second branch ducts, and the multiple second branch ducts are arranged at circumferential intervals on the side of the main duct section.

[0013] Further, the multiple second branch ducts arranged at circumferential intervals form a second air outlet duct group, and the multiple second air outlet duct groups are arranged at intervals along the extension direction of the main duct section.

[0014] Further, there are two second branch ducts, and the two second branch ducts are arranged at intervals on the side wall of the main duct section. The air guide duct further includes: a second spoiler, which is arranged within the main channel of the second flow channel and extends along the extension direction of the main duct section. One second branch duct is located on one side of the second spoiler, and the other second branch duct is located on the other side of the second spoiler.

[0015] According to another aspect of the present invention, an air conditioning system is provided. The air conditioning system includes: an air conditioner; an air guide duct, the first air inlet of the air guide duct is communicated with the air outlet part of the air conditioner, the second air inlet of the air guide duct is used for introducing indoor air, and the air guide duct is the air guide duct provided above.

[0016] According to another aspect of the present invention, an aircraft is provided, which includes: a fuselage; an air conditioning system disposed on the fuselage, and an air duct of the air conditioning system extends along the extending direction of the fuselage, and the air conditioning system is the air conditioning system provided above.

[0017] By applying the technical solution of the present invention, it is possible to make the fluid in the first flow channel and the fluid in the second flow channel not interfere with each other, avoid the situation where the fluid in the first flow channel and the fluid in the second flow channel collide and mix with each other, avoid pressure loss, and also avoid the situation of condensation or ice and snow due to different temperature differences, so as to simplify the design of the fan. The present invention designs an independent first flow channel and second flow channel structure in the same air duct to avoid the mixing of airflows in the air duct of the air duct. The aim is to simplify the air duct structure, reduce pressure loss, and prevent the formation of condensation or ice and snow. Thereby indirectly reducing the structural size of the air duct and its mixing system, reducing the weight of the air duct, and reducing the energy consumption of the fan. Through the embodiments provided by the present invention, it is possible to solve the problems of the formation of condensed water, water mist or ice and snow in the air duct and its mixing system; solve the problem of increased air resistance caused by direct mixing of airflows, resulting in excessive pressure loss; solve the problem of complex structure and too large volume due to too many additional functions of the air duct; solve the problem of difficult fan selection due to excessive pressure loss in the air duct and at the same time reduce the power consumption of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0019] Figure 1 A schematic structural view of an air duct provided according to an embodiment of the present invention is shown;

[0020] Figure 2 A top view of an air duct provided according to an embodiment of the present invention is shown;

[0021] Figure 3 Shows Figure 2 The A-A sectional view in

[0022] Figure 4 A side view of an air duct provided according to an embodiment of the present invention is shown;

[0023] Figure 5 Shows Figure 4 The overall B-B sectional view ( Figure 5 The streamline in the pipeline in represents the flow condition of the airflow).

[0024] Among them, the above-mentioned accompanying drawings include the following reference numerals:

[0025] 10. Pipe body; 11. Main pipe section; 12. First branch pipe; 13. Second branch pipe; 20. Partition plate; 31. First flow channel; 311. First air inlet; 312. First air outlet; 32. Second flow channel; 321. Second air inlet; 322. Second air outlet; 41. First spoiler; 42. Second spoiler. Detailed implementation manner

[0026] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] As Figures 1 to 5 As shown, Embodiment 1 of the present invention provides a duct, which includes a pipe body 10 and a partition plate 20. The partition plate 20 is arranged inside the pipe body 10 to divide the flow channel of the pipe body 10 into two independent first flow channels 31 and second flow channels 32. Among them, the pipe body 10 has a first end and a second end arranged opposite to each other. The first flow channel 31 has a first air inlet 311 and a first air outlet 312. The first air inlet 311 is located at the first end of the pipe body 10, and the first air outlet 312 is located between the first end of the pipe body 10 and the second end of the pipe body 10; the second flow channel 32 has a second air inlet 321 and a second air outlet 322. The second air inlet 321 is arranged at an interval from the first air outlet 312, and the second air outlet 322 is located on the side of the second air inlet 321 away from the first air outlet 312.

[0028] With such a structural arrangement, it can be ensured that the fluid in the first flow channel 31 and the fluid in the second flow channel 32 do not interfere with each other, avoiding the situation where the fluid in the first flow channel 31 and the fluid in the second flow channel 32 collide and mix with each other, avoiding pressure loss, and also avoiding the situation of condensation or ice and snow due to different temperature differences, so as to simplify the design of the fan. The present invention designs an independent first flow channel 31 and second flow channel 32 structure in the same duct to avoid the mixing of airflows in the air duct of the duct. The aim is to simplify the air duct structure, reduce pressure loss, and prevent the formation of condensation or ice and snow. Thereby indirectly reducing the structural size of the air duct and its mixing system, reducing the weight of the duct, and reducing the energy consumption of the fan. Through the embodiments provided by the present invention, it can solve the problems of the formation of condensed water, water mist or ice and snow in the air duct and its mixing system; solve the problem of increased air resistance caused by direct mixing of airflows, resulting in excessive pressure loss; solve the problem of complex structure and too large volume due to too many additional functions of the air duct; solve the problem of difficult fan selection due to excessive pressure loss of the air duct and at the same time reduce the power consumption of the fan.

[0029] Specifically, the first air inlet 311 extends along a first preset direction, and the second air inlet 321 extends along a second preset direction. The first preset direction and the second preset direction are connected at a preset angle, so as to facilitate separate air intake of the first air inlet 311 and the second air inlet 321. Specifically, the first air inlet 311 extends along the horizontal direction, and the second air inlet 321 extends vertically upward, so as to facilitate the air outlet of the air conditioner to intake air through the first air inlet 311 and supply fresh gas after heat exchange to the cabin of the aircraft, and also facilitate the air in the cabin to enter through the second air inlet 321 and then pass through the second fluid channel and perform independent circulation respectively.

[0030] In this embodiment, the pipe body 10 includes a main pipe section 11 and a first branch pipe 12. The main pipe section 11 is a strip-shaped pipe structure and extends along a third preset direction. The main channels of the first flow channel 31 and the second flow channel 32 are both located in the main pipe section 11. The partition plate 20 is located in the main pipe section 11. One end of the main pipe section 11 forms the first air inlet 311, and the second air inlet 321 is located between one end and the other end of the main pipe section 11. The first branch pipe 12 is arranged on the side of the main pipe section 11 and is connected to the main pipe section 11 at a fourth preset angle. The first branch pipe 12 is communicated with the main channel of the first flow channel 31, and one end of the first branch pipe 12 far from the main pipe section 11 forms the first air outlet 312. With such a structural arrangement, the structure is simple, and it is also convenient for the air intake and outlet of the first flow channel 31.

[0031] Specifically, there are multiple first branch pipes 12 in this embodiment, and the multiple first branch pipes 12 are arranged at intervals on the side wall of the main pipe section 11, so as to improve the uniformity of air outlet and enable the air to be evenly blown into the cabin.

[0032] In this embodiment, there are two first branch pipes 12, and the two first branch pipes 12 are symmetrically arranged with respect to the main pipe section 11. The air guide pipe further includes a first spoiler 41, and the first spoiler 41 is arranged in the main channel of the first flow channel 31 and extends along the extension direction of the main pipe section 11. One first branch pipe 12 is located on one side of the first spoiler 41, and the other first branch pipe 12 is located on the other side of the first spoiler 41. With such a structural arrangement, the uniformity of flow splitting can be improved, so that the air in the first flow channel 31 can be evenly blown to each first air outlet 312.

[0033] Specifically, along the extension direction of the main pipe section 11 in this embodiment, the spoiler thickness of the first spoiler 41 gradually increases, so as to reduce the flow resistance of flow splitting.

[0034] In this embodiment, the air duct further includes a second branch pipe 13. The second branch pipe 13 is arranged on the side of the main pipe section 11 and is connected to the main pipe section 11 at a fifth preset angle. The second branch pipe 13 communicates with the main passage of the second flow passage 32, and one end of the second branch pipe 13 away from the main pipe section 11 forms a second air outlet 322. With such a structural arrangement, it is convenient for the air inlet and outlet of the second flow passage 32.

[0035] Specifically, there are multiple second branch pipes 13 in this embodiment. The multiple second branch pipes 13 are circumferentially arranged at intervals on the side of the main pipe section 11. With such a structural arrangement, it is convenient to improve the air outlet uniformity of the second flow passage 32, so that the air in the second flow passage 32 can be evenly blown into the cabin.

[0036] In this embodiment, the multiple second branch pipes 13 arranged at circumferential intervals form a second air duct group, and multiple second air duct groups are arranged at intervals along the extension direction of the main pipe section 11. Specifically, since the cabin is relatively long, in order to facilitate independent air supply control for each area, multiple second air duct groups are arranged along the extension direction of the cabin, so as to improve the use comfort of the passengers in the cabin.

[0037] Specifically, there are two second branch pipes 13 in this embodiment. The two second branch pipes 13 are arranged at intervals on the side wall of the main pipe section 11. The air duct further includes: a second spoiler 42 arranged in the main passage of the second flow passage 32. The second spoiler 42 extends along the extension direction of the main pipe section 11. One second branch pipe 13 is located on one side of the second spoiler 42, and the other second branch pipe 13 is located on the other side of the second spoiler 42. With such a structural arrangement, it is convenient to improve the uniformity of flow splitting, so that the air output of each second air outlet 322 does not differ much.

[0038] Specifically, along the extension direction of the main pipe section 11 in this embodiment, the spoiler thickness of the second spoiler 42 gradually increases, so as to reduce the flow resistance of flow splitting.

[0039] The air duct in this embodiment can be an integrally formed structure, which is convenient for installation. Alternatively, the air duct is an assembled structure, and the main pipe section 11, the first branch pipe 12 and the second branch end are assembled together, avoiding the situation that the parts are too large and inconvenient for production and manufacturing.

[0040] Preferably, the air duct is composed of multiple sections spliced together. The first section is provided with an air duct flow guiding structure. Each middle air guiding section uses the same air duct, and the tail end adopts a structure with only a shunt branch pipe. The first section of the air duct includes the air duct inlet of the environmental control system (the first air inlet 311) and the air duct inlet of the auxiliary cooling air conditioning system (the second air inlet 321). The two air inlets are designed in different directions according to needs (shown as a horizontal inlet (the first air inlet 311) and a vertical inlet (the second air inlet 321) in the figure). The first flow channel 31 and the second flow channel 32 are completely independent. The air regulated by the environmental control system introduced through the horizontal air inlet is divided into two symmetrical air guiding cavities on the left and right under the action of the first spoiler 41, and is respectively connected to the cabin through the left and right first branch pipes 12. The air regulated by the auxiliary cooling air conditioning system introduced through the vertical air inlet is introduced from the bottom of the first section of the air duct through the transition air duct, and is divided into two symmetrical parts on the left and right under the action of the second spoiler 42. Air guiding branch pipes leading to the cabin are arranged on both sides of each part, and an interface for connecting to the next air duct is arranged at the tail end of each part, and the air can be smoothly sent into the next air duct. Both the first branch pipe 12 and the second branch pipe 13 are smoothly transitioned with the main pipe section 11. The air guiding surface of the main pipe section 11 is larger than that of the first branch pipe 12, and the air guiding surface of the main pipe section 11 is larger than that of the second branch pipe 13. Their size relationship is related to the length of the cabin, the space division points of the cabin, and the static pressure of the fan, and the specific ratio relationship needs to be determined through simulation calculation.

[0041] The first branch pipe 12, the second branch pipe 13 and the main pipe section 11 can be integrally stamped into one part, or can be formed separately and then assembled together. If assembled and connected, it is necessary to ensure reliable connection sealing and smooth cutting without air resistance.

[0042] Two completely independent air guiding partitions (the two completely independent air guiding partitions include the first spoiler 41 and the second spoiler 42) are arranged in the main pipe section 11. The air guiding partitions are continuous and uninterrupted in different air duct sections. The windward surface of the air guiding partition should adopt a V-shaped surface for smooth transition, with the tip facing the windward surface, so as to minimize the influence of the air guiding partition on the air duct resistance; the ends of each air guiding branch pipe (including the first branch pipe 12 and the second branch pipe 13) are connected to a specific air duct or a specific air outlet in the cabin, and the specific form is not limited. The outside of the air duct is insulated with heat-insulating materials.

[0043] The air duct of the airborne air conditioner and its flow guiding system of the present invention are composed of the first section of the pipe section, each intermediate component pipe section and the tail section of the pipe section, attached Figure 1As shown in the figure. The fresh air adjusted by the aircraft environmental control system is introduced into the first pipe section through the environmental control air outlet (the first air inlet 311), and enters the right air guide cavity and the left air guide cavity respectively under the action of the first spoiler 41, and then enters the cabin through the right first branch pipe 12 and the left first branch pipe 12 respectively. The recycled air adjusted by the aircraft auxiliary cooling system is introduced into the first pipe section through the auxiliary cooling air outlet (the second air inlet 321). The opening position and orientation of this interface are determined according to the position of the airborne auxiliary cooling unit. The second air inlet passes through the transition duct and enters the main pipe section 11, and is divided into two symmetrically independent air guide systems by the second spoiler 42, and then enters the cabin through the second branch pipes 13 respectively. The end of the first pipe section is connected to the next pipe, and the air flow can smoothly enter the subsequent pipe after connection.

[0044] Specifically, each intermediate pipe section in this embodiment is divided into two symmetric parts by the second air guide partition. After the air duct is introduced through the first pipe section, it enters the right cabin through the right air guide cavity and the right second branch pipe 13 respectively on the left and right sides of the air guide partition, and enters the left cabin through the left air guide cavity and the left second branch pipe 13. The tail pipe section only includes two left and right diversion branch pipes, and the main air duct is short, so there is no need to set an air guide partition.

[0045] To facilitate the understanding of the first pipe section, an attached Figure 5 As shown in the transverse cross-sectional view of the air duct, the air flow process in the air duct during operation is described. The fresh air adjusted by the aircraft environmental control system is introduced through the first air inlet 311, and is divided into two symmetrically independent air ducts under the action of the first spoiler 41. The air passes through the left first branch pipe 12 and enters the corresponding air section or air outlet of the left cabin through the first air outlet 312, and the air passes through the left first branch pipe 12 and enters the corresponding air section or air outlet of the right cabin through the left first air outlet 312. The recycled air adjusted by the aircraft auxiliary cooling air-conditioning system is introduced into the air duct through the second air inlet 321, and is divided into two symmetrically independent air ducts under the action of the second spoiler 42. The air enters the corresponding air section or air outlet of the left cabin through the left second branch pipe 13, and the air enters the corresponding air section or air outlet of the right cabin through the right second branch pipe 13. The air enters the inlet of the subsequent air duct through the second air inlet 321.

[0046] The initial sections of the first spoiler 41 and the second spoiler 42 are designed as V-shaped windward surfaces. The connection between each air guide branch pipe and the pipe section, and between the air outlet and the pipe section is smooth, so as to minimize its influence on the air resistance. The connection between each air duct should be smooth and reliable, and there should be no bosses or other obstacles in the air duct that hinder the air flow. The left and right corresponding air guide branch pipes and their air outlets are the same in size and shape, and are kept symmetrical. The outside of the pipe section needs to be insulated with heat-insulating materials, and both sides of the air guide partition need to be insulated with heat-insulating materials. The treatment methods include but are not limited to pasting sponges, brushing heat-insulating coatings, etc.

[0047] According to Embodiment 2 of the present invention, an air conditioning system is provided. The air conditioning system includes an air conditioner and a duct. The first air inlet 311 of the duct is communicated with the air outlet part of the air conditioner. The second air inlet 321 of the duct is used for introducing indoor air. The duct is the duct provided in Embodiment 1 above.

[0048] According to Embodiment 3 of the present invention, an aircraft is provided. The aircraft includes a fuselage and an air conditioning system. The air conditioning system is arranged on the fuselage. The duct of the air conditioning system extends along the extending direction of the fuselage. The air conditioning system is the air conditioning system provided in Embodiment 2 above.

[0049] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: The present invention adopts the same duct with a completely independent air guiding duct. It can make the fresh air adjusted by the environmental control system and the recycled air secondary-adjusted by the auxiliary cooling air conditioning system form their own systems without contacting each other, so as to achieve the following effects: Since the two airflows with different temperatures and humidities no longer mix, there will be no direct contact between them, and thus no condensation will occur, or no water mist or ice and snow caused by condensation will be generated. As a result, the duct does not require a drainage and anti-condensation structure, thereby simplifying the duct structure, reducing the volume, reducing the weight, and increasing the effective usable space of the aircraft. By avoiding the direct contact between the two airflows with different flow rates and flow volumes, the mixing unevenness and pressure loss caused by the mixing of the two airflows, especially in the case of a huge difference in flow rates, are also avoided. As a result, the duct pressure difference is greatly reduced, thereby reducing the static pressure and power of the fan selection. The fan cost is reduced and the energy consumption is significantly reduced. The duct adopts a multi-segment splicing form, where the first segment is the air duct guiding end, the middle is spliced by several identical air ducts according to the length of the aircraft fuselage, and the tail end adopts a tail air duct. The structure is simple and no conical surface transition is required, so the reliability and cost of the duct are reduced.

[0050] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or their combinations.

[0051] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0052] In the description of the present application, it should be understood that the orientation or positional relationships indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without contrary statements, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present application; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0053] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" can be used here to describe the spatial positional relationships of a device or feature shown in the drawings with other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawings of the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0054] In addition, it should be noted that the use of words such as "first", "second" to limit components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, these words have no special meanings, and thus should not be construed as limiting the protection scope of the present application.

[0055] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, various modifications and variations can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An air duct, characterized in that, Comprising: A pipe body (10) and a partition plate (20), the partition plate (20) is arranged inside the pipe body (10) to divide the flow passage of the pipe body (10) into an independent first flow passage (31) and a second flow passage (32) through the partition plate (20); Wherein, the pipe body (10) has a first end and a second end arranged oppositely, the first flow passage (31) has a first air inlet (311) and a first air outlet (312), the first air inlet (311) is located at the first end of the pipe body (10), and the first air outlet (312) is located between the first end of the pipe body (10) and the second end of the pipe body (10); The second flow passage (32) has a second air inlet (321) and a second air outlet (322), the second air inlet (321) is arranged at an interval from the first air outlet (312), and the second air outlet (322) is located on a side of the second air inlet (321) away from the first air outlet (312); The first air inlet (311) is communicated with the aircraft environmental control system, and the first air outlet (312) is used to access the corresponding air section or air outlet of the aircraft cabin; the second air inlet (321) is communicated with the aircraft auxiliary cooling system, the second air inlet (321) is used to introduce the recirculated air in the aircraft cabin, and the second air outlet (322) is used to access the corresponding air section or air outlet of the aircraft cabin.

2. The air duct according to claim 1, characterized in that, The first air inlet (311) extends along a first preset direction, the second air inlet (321) extends along a second preset direction, and the first preset direction and the second preset direction are connected at a preset angle.

3. The air duct according to claim 1, characterized in that, The pipe body (10) includes: A main pipe section (11), the main pipe section (11) is a strip-shaped pipe structure, the main pipe section (11) extends along a third preset direction, the main channels of the first flow passage (31) and the second flow passage (32) are both located inside the main pipe section (11), the partition plate (20) is located inside the main pipe section (11), one end of the main pipe section (11) forms the first air inlet (311), and the second air inlet (321) is located between one end of the main pipe section (11) and the other end of the main pipe section (11); A first branch pipe (12), arranged on the side of the main pipe section (11), the first branch pipe (12) is connected to the main pipe section (11) at a fourth preset angle, the first branch pipe (12) is communicated with the main channel of the first flow passage (31), and the end of the first branch pipe (12) away from the main pipe section (11) forms the first air outlet (312).

4. The air duct according to claim 3, wherein, There are multiple first branch pipes (12), and the multiple first branch pipes (12) are arranged at intervals on the side wall of the main pipe section (11).

5. The air duct according to claim 3, characterized in that, There are two first branch pipes (12), and the two first branch pipes (12) are symmetrically arranged with respect to the main pipe section (11), and the air duct further includes: The first spoiler (41) is arranged in the main channel of the first flow channel (31). The first spoiler (41) extends along the extension direction of the main pipe section (11). One of the first branch pipes (12) is located on one side of the first spoiler (41), and the other first branch pipe (12) is located on the other side of the first spoiler (41).

6. The air duct according to claim 5, characterized in that, Along the extension direction of the main pipe section (11), the spoiler thickness of the first spoiler (41) gradually increases.

7. The air duct according to any one of claims 3 to 6, characterized in that, The air duct further includes: A second branch pipe (13) is arranged on the side of the main pipe section (11). The second branch pipe (13) is connected to the main pipe section (11) at a fifth preset angle. The second branch pipe (13) communicates with the main channel of the second flow channel (32). One end of the second branch pipe (13) far from the main pipe section (11) forms the second air outlet (322).

8. The air duct according to claim 7, characterized in that, There are a plurality of the second branch pipes (13), and the plurality of second branch pipes (13) are arranged at circumferential intervals on the side of the main pipe section (11).

9. The air duct according to claim 8, characterized in that, The plurality of second branch pipes (13) arranged at circumferential intervals form a second air duct group, and the plurality of second air duct groups are arranged at intervals along the extension direction of the main pipe section (11).

10. The air duct according to claim 7, characterized in that, There are two second branch pipes (13), and the two second branch pipes (13) are arranged at intervals on the side wall of the main pipe section (11). The air duct further includes: A second spoiler (42) is arranged in the main channel of the second flow channel (32). The second spoiler (42) extends along the extension direction of the main pipe section (11). One of the second branch pipes (13) is located on one side of the second spoiler (42), and the other second branch pipe (13) is located on the other side of the second spoiler (42).

11. An air conditioning system, characterized in that, The air conditioning system includes: An air conditioner; An air duct, the first air inlet (311) of the air duct is communicated with the air outlet part of the air conditioner, and the air duct is the air duct according to any one of claims 1 to 10.

12. An aircraft, characterized in that, The aircraft includes: A fuselage; An air conditioning system is arranged on the fuselage. The air duct of the air conditioning system extends along the extension direction of the fuselage, and the air conditioning system is the air conditioning system according to claim 11.

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