Humidity regulating system and air handling system for an aircraft
By introducing a humidity control system consisting of water intake pipes, drainage pipes, and moisture-absorbing components into the aircraft air handling system, the problem of poor condensate collection has been solved, achieving effective condensate collection and automatic airflow humidity regulation, thus improving passenger comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- COMMERCIAL AIRCRAFT CORP OF CHINA LTD
- Filing Date
- 2024-02-27
- Publication Date
- 2026-06-09
AI Technical Summary
In existing aircraft air handling systems, condensate collection is ineffective, causing condensate to drip or adhere to the air vents, affecting passenger comfort.
Design a humidity control system including a water absorption pipe, a drainage pipe, and a moisture absorption component. The moisture absorption component absorbs water vapor in the outer channel and provides a water source for the water absorption pipe. The water absorption pipe evaporates water to humidify the airflow in the inner channel. The system uses humidity detection elements and control components to automatically adjust the airflow path to achieve dynamic humidity balance.
It effectively collects condensate, prevents dripping, keeps the air vents dry, improves passenger comfort, and ensures appropriate airflow humidity through an automatic adjustment system.
Smart Images
Figure CN118163951B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of air handling systems, specifically to a humidity control system and an air handling system for aircraft. Background Technology
[0002] In summer, high external temperatures result in significant heat loads inside vehicle cabins, especially after prolonged exposure to direct sunlight while the aircraft is stationary. Cabin air temperatures can reach over 50°C. To cool the cabin quickly, target temperatures are often set low, causing the fresh air outlet temperature to approach 0°C. This creates an ice-water mixture, which mixes with the warmer recirculated air in the air handling system's mixing chamber, forming liquid water. Furthermore, because cabin doors are often open for extended periods before operation, warm, humid outside air enters the cabin, increasing both the heat load and cabin humidity. This results in high humidity in the recirculated air, and the combination of this warm, humid recirculated air and the cooler fresh air causes condensation.
[0003] All of the above situations can lead to the presence of liquid free water in the airflow of the air handling system. As the high-speed airflow enters the air distribution system, it eventually drips from or adheres to the air vents. In addition to the condensate from the air conditioning system, the high temperature and humidity inside the cabin, combined with the cold air coming out of the vents and the cool interior surfaces, can easily cause condensation to form on the interior surfaces near the vents, creating water droplets.
[0004] In existing aircraft air handling systems, drain outlets are typically located in the mixing chamber or air supply duct. However, considering that the drain outlets should not significantly increase airflow resistance and that the air supply duct itself has strength requirements, the size of the drain outlets in the mixing chamber or air supply duct is relatively small, and the opening direction is perpendicular to the flow or at a certain angle, which makes it impossible to effectively collect condensate.
[0005] Therefore, there is an urgent need to design a humidity control system to solve the aforementioned technical problems in the existing technology. Summary of the Invention
[0006] This application provides a humidity control system and an air handling system for aircraft, which can solve the problem of poor condensate collection in existing air handling systems.
[0007] To achieve the above objectives, the humidity control system provided in this application includes:
[0008] The water intake pipe has an internal flow channel;
[0009] A drainage pipe is fitted around the outer periphery of the water absorption pipe;
[0010] A moisture-absorbing element is disposed between the water-absorbing pipe and the water-draining pipe. The inner side of the moisture-absorbing element is in contact with the water-absorbing pipe, and an outer flow channel is formed between the outer side of the moisture-absorbing element and the water-draining pipe. The moisture-absorbing element can regulate the humidity of the airflow in the inner flow channel and the outer flow channel.
[0011] In practical use, since an external flow channel is formed between the outer side of the moisture-absorbing element and the drainage pipe, the moisture-absorbing element can absorb and store moisture from the airflow flowing through the external flow channel, thereby drying the airflow within the external flow channel and reducing its humidity. Furthermore, since the drainage pipe has water-absorbing properties and is in close contact with the inner side of the moisture-absorbing element, the moisture-absorbing element can provide a water source for the drainage pipe. The drainage pipe can absorb moisture from the moisture-absorbing element, and the moisture stored in the drainage pipe evaporates, humidifying the airflow within the internal flow channel. Therefore, the humidity control system provided in this application can regulate the humidity of the airflow in both the internal and external flow channels.
[0012] In some embodiments of this application, the hydrophobic pipe has an air inlet and an air outlet, and includes an air inlet pipe section near the air inlet and an air outlet pipe section near the air outlet. The air outlet pipe section is sleeved on the outer periphery of the moisture-absorbing element and spaced apart from the moisture-absorbing element to form the external flow channel. The humidity control system further includes:
[0013] A humidity detection element is installed on the air inlet duct section.
[0014] In some embodiments of this application, the humidity control system further includes:
[0015] A control component, connected to the water intake pipe, is capable of controlling the airflow through the outer channel, or controlling the airflow to flow through both the inner channel and the outer channel simultaneously.
[0016] In some embodiments of this application, the control component includes:
[0017] A closure is provided at one end of the water intake pipe near the air inlet;
[0018] The control module is electrically connected to both the humidity detection element and the closure element.
[0019] When the humidity detection element detects that the humidity of the airflow is lower than the first preset humidity, the control module controls the closure to open;
[0020] When the humidity detection element detects that the humidity of the airflow is higher than the second preset humidity, the control module controls the closure to close, and the second preset humidity is greater than the first preset humidity.
[0021] In some embodiments of this application, the absorbency of the water-absorbing pipe is higher than that of the moisture-absorbing element.
[0022] In some embodiments of this application, the orthographic projection of the water suction pipe coincides with the orthographic projection of the air inlet pipe section along the extension direction of the water suction pipe, or the orthographic projection of the water suction pipe is located inside the orthographic projection of the air inlet pipe section along the extension direction of the water suction pipe.
[0023] In some embodiments of this application, the flow area S1 of the air inlet pipe section is smaller than the flow area S2 of the air outlet pipe section, and the drainage pipe further includes a transition pipe section connecting the air inlet pipe section and the air outlet pipe section. The flow area of the transition pipe section gradually increases from the air inlet to the air outlet.
[0024] In some embodiments of this application, the flow area S1 of the air inlet pipe section and the flow area S2 of the air outlet pipe section satisfy: S2 = (1.8~2.5) * S1, and the flow area S1 of the air inlet pipe section and the flow area S3 of the water absorption pipe satisfy: S3 = (0.8~1.0) * S1.
[0025] In some embodiments of this application, the moisture-absorbing element surrounds the outer periphery of the water-absorbing pipe and is in contact with the outer periphery.
[0026] In some embodiments of this application, the inner wall of the hydrophobic conduit is coated with a hydrophobic material layer or the hydrophobic conduit is made of a hydrophobic material.
[0027] In some embodiments of this application, the water suction pipe is provided with a perforated structure that connects to the inner flow channel.
[0028] On the other hand, this application also provides an air handling system for an aircraft, comprising:
[0029] Refrigeration components are used to cool gases to obtain cold airflow.
[0030] The mixing chamber mixes the cooled airflow and the recirculated air from the recirculation system, forming a mixed airflow at the outlet.
[0031] As described in any of the above technical solutions, the humidity control system has an air inlet and an air outlet, the air inlet being used to connect with the air outlet, and the air outlet being used to connect with the air outlet of the aircraft cabin.
[0032] In practical use, this air handling system for aircraft allows the moisture-absorbing component to absorb and store moisture from the airflow passing through the outer channel as it flows out of the mixing chamber, thus drying the airflow and reducing its humidity. Furthermore, when the airflow passes through the inner channel, the moisture-absorbing component provides water to the water intake pipe, allowing the stored moisture to evaporate and humidify the airflow within the inner channel, thereby regulating the humidity of both the inner and outer channels. Attached Figure Description
[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0034] Figure 1 This is a schematic diagram of the humidity control system in an embodiment of this application;
[0035] Figure 2 This is a cross-sectional view of the humidity control system in an embodiment of this application;
[0036] Figure 3 This is a schematic diagram of the water absorption pipe in the humidity control system of this application embodiment.
[0037] The main reference numerals in the drawings of this application are explained as follows:
[0038] 1-Water intake pipe; 11-Internal flow channel; 12-Porous structure;
[0039] 2-Drainage pipe; 21-Outflow channel; 22-Inlet air duct section; 23-Supply air duct section; 24-Transition pipe section;
[0040] 3-Moisture-absorbing component;
[0041] 4-Humidity detection element;
[0042] 5-Closure element. Detailed Implementation
[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0044] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0045] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0046] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0047] This application provides a humidity control system and an air handling system for an aircraft, which are described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.
[0048] Figure 1 This is a schematic diagram of the humidity control system in an embodiment of this application. Figure 2 This is a cross-sectional view of the humidity control system in an embodiment of this application. (Refer to...) Figure 1 and Figure 2 The humidity control system provided in this application includes a water absorption pipe 1, a drainage pipe 2, and a moisture-absorbing component 3. The water absorption pipe 1 forms an inner flow channel 11. The drainage pipe 2 is sleeved around the outer periphery of the water absorption pipe 1. The moisture-absorbing component 3 is disposed between the water absorption pipe 1 and the drainage pipe 2. The inner side of the moisture-absorbing component 3 is in contact with the water absorption pipe 1 to provide water to it, and the outer side of the moisture-absorbing component 3 is spaced apart from the drainage pipe 2 to form an outer flow channel 21. The moisture-absorbing component 3 can regulate the humidity of the airflow in the inner flow channel 11 and the outer flow channel 21.
[0049] In practical use, since an outer flow channel 21 is formed between the outer side of the moisture-absorbing element 3 and the drainage pipe 2, the moisture-absorbing element 3 can absorb and store water vapor in the airflow flowing through the outer flow channel 21 to dry the airflow in the outer flow channel 21 and reduce the humidity of the airflow in the outer flow channel 21. Furthermore, since the water-absorbing pipe 1 has water-absorbing properties and is in contact with the inner side of the moisture-absorbing element 3, the moisture-absorbing element 3 can provide a water source for the water-absorbing pipe 1. The water-absorbing pipe 1 can absorb moisture from the moisture-absorbing element 3, and the moisture stored in the water-absorbing pipe 1 evaporates to humidify the airflow in the inner flow channel 11, thereby regulating the humidity of the airflow in the inner flow channel 11 and the outer flow channel 21.
[0050] It should be noted that the evaporation of moisture in the water intake pipe 1 mainly relies on the airflow velocity, temperature difference, and water vapor partial pressure difference. Since the water intake pipe 1 stores moisture and its water vapor partial pressure is greater than that of the dry air in the inner flow channel 11, the water vapor in the water intake pipe 1 can automatically flow towards the dry air. On the other hand, when this humidity control system is used in an aircraft's air handling system, the air is relatively dry during high-altitude cruising and requires humidification. During high-altitude cruising, the air in the pipes is warm, thus the airflow carries its own heat, which promotes the evaporation of moisture in the water intake pipe 1. Furthermore, the airflow velocity also promotes heat and mass exchange, further accelerating the evaporation of moisture in the water intake pipe 1.
[0051] The inner side of the moisture-absorbing element 3 is in contact with the water-absorbing pipe 1, as described above. This can be understood as a portion of the inner side of the moisture-absorbing element 3 being in contact with the water-absorbing pipe 1. Alternatively, it can be understood that to ensure efficient transfer of the moisture absorbed by the moisture-absorbing element 3 to the water-absorbing pipe 1, the contact area between the moisture-absorbing element 3 and the water-absorbing pipe 1 needs to be maximized, so that the entire inner area of the moisture-absorbing element 3 is in contact with the water-absorbing pipe 1.
[0052] In other embodiments, the water absorption pipe 1, the drainage pipe 2, and the moisture-absorbing component 3 are all annular and coaxially arranged to facilitate installation. It is understood that the term "annular" refers to the fact that the three components are continuous and uninterrupted in the circumferential direction.
[0053] To ensure that the moisture stored in the moisture-absorbing element 3 can be efficiently absorbed by the water-absorbing pipe 1, in some embodiments of this application, the water-absorbing pipe 1 is made of a water-absorbing material, and the water absorption of the water-absorbing pipe 1 is higher than that of the moisture-absorbing element 3. Furthermore, to ensure that the moisture-absorbing element 3 absorbs free water from the flowing air in the outer flow channel 21, the moisture-absorbing element 3 has high hygroscopicity.
[0054] For example, the moisture-absorbing element 3 can be made of a water-absorbing material with water-absorbing properties, such as a sponge or absorbent resin. In other embodiments not shown in the accompanying drawings, in order to increase the moisture absorption performance of the moisture-absorbing element 3, the moisture-absorbing element 3 includes multiple moisture-absorbing layers in the direction from the water absorption pipe 1 to the water drainage pipe 2. Each moisture-absorbing layer can be made of a different water-absorbing material, and the moisture absorption of the moisture-absorbing layer closer to the water absorption pipe 1 is greater than that of the moisture-absorbing layer farther away from the water absorption pipe 1.
[0055] Continue to refer to Figure 1 In order to detect the humidity information of the airflow entering from the air inlet of the drainage pipe 2, the drainage pipe 2 is provided with an air inlet ( Figure 1 The left port of the drainage pipe 2 shown) and the air outlet ( Figure 1 The drainage pipe 2 shown (right port) includes an air inlet pipe section 22 near the air inlet and an air outlet pipe section 23 near the air outlet. The air outlet pipe section 23 is fitted around the outer periphery of the moisture-absorbing element 3 and spaced apart from the moisture-absorbing element 3 to form the external flow channel 21. That is, the dimension of the drainage pipe 2 in its extension direction is larger than the dimension of the water absorption pipe 1 in its extension direction, meaning that no internal pipe is provided in the air inlet pipe section 22 near the air inlet of the drainage pipe 2. The humidity control system also includes a humidity detection element 4, which is installed on the air inlet pipe section 22.
[0056] Furthermore, since the airflow does not undergo humidity treatment within the air inlet duct section 22, the humidity of the airflow within this section accurately reflects its current actual humidity. Therefore, placing the humidity detection element 4 on the air inlet duct section 22 allows for more precise detection of the actual humidity of the airflow. The humidity detection element 4 can be positioned in the middle of the air inlet duct section 22 along its extension direction to ensure that it detects the humidity of the airflow in a relatively stable region, thereby further improving the detection accuracy. For example, the humidity detection element 4 can be a humidity sensor, a wet-bulb / dry-bulb thermometer, or a thin-film humidity-sensitive capacitor. This application does not limit the specific structure of the humidity detection element 4, as long as it can obtain the humidity information of the airflow within the air inlet duct section 22.
[0057] Based on this, the humidity control system described above in this application also includes a control component. The control component is connected to the water absorption pipe 1 and is used to control the airflow to flow through the inner flow channel 11 and the outer flow channel 21, or only through the outer flow channel 21.
[0058] In practical use, when the airflow humidity is high, the control component controls the inner flow channel 11 to disconnect and the outer flow channel 21 to open. The high-humidity airflow carrying free water flows through the outer flow channel 21 between the moisture-absorbing component 3 and the air supply pipe section 23. The moisture-absorbing component 3 absorbs moisture and dehumidifies the airflow in the outer flow channel 21. When the airflow is dry, the control component controls both the inner flow channel 11 and the outer flow channel 21 to open. The flowing air passes through the inner flow channel 11 and, together with the humid water vapor in the water absorption pipe 1, flows to the air outlet, thereby humidifying the flowing air in the inner flow channel 11. The dry airflow flowing through the outer flow channel 21 can further dry the moisture-absorbing component 3 to achieve repeated water storage in the high-humidity environment of the next flight segment.
[0059] In other words, this application utilizes the water absorption properties of the moisture-absorbing element 3 and the water absorption and evaporation properties of the water absorption pipe 1 to achieve automatic regulation of airflow humidity. When the airflow humidity is high, the moisture-absorbing element 3 absorbs and stores free water in the airflow. At this time, the inner pipe in contact with the moisture-absorbing element 3 can absorb the moisture in the moisture-absorbing element 3 due to its high water absorption properties. When the airflow is dry, the moisture stored in the water absorption pipe 1 evaporates, humidifying the dry airflow. The moisture-absorbing element 3 provides a water source for the water absorption pipe 1. Since the water absorption capacity of the airflow is limited, the humidification process of the airflow through the inner flow channel 11 is automatically regulated, and the humidity of the airflow will not be oversaturated, ensuring that the humidity of the airflow is relatively suitable.
[0060] In some embodiments of this application, the control component includes a closure 5, which is located at one end of the water intake pipe 1 near the air inlet. When the closure 5 is open, it opens the inner flow channel 11; when the closure 5 is closed, it closes the inner flow channel 11, thereby switching the flow path of the airflow between the inner flow channel 11 and the outer flow channel 21, which is easy to implement. Furthermore, with the above arrangement, it is possible to ensure that part of the airflow passes through the inner flow channel 11 and, together with the humidified water vapor from the water intake pipe 1, flows to the air outlet. Another part of the airflow passes through the outer flow channel 21, drying the moisture-absorbing component 3 so that it can be reused for water storage in the high-humidity environment of the next flight segment. The closure 5 is a valve, or the closure 5 includes a drive module and a door panel, the drive module being used to drive the door panel to open or block the inner flow channel 11 in the water intake pipe 1.
[0061] The control assembly also includes a control module, which is electrically connected to both the humidity detection element 4 and the closure element 5. When the humidity detection element 4 detects that the humidity of the airflow is lower than a first preset humidity, the control module controls the closure element 5 to open, at which point part of the airflow passes through the inner flow channel 11 and the other part passes through the outer flow channel 21. When the humidity detection element 4 detects that the humidity of the airflow is higher than a second preset humidity, the control module controls the closure element 5 to close, and all the airflow passes through the outer flow channel 21. The second preset humidity is greater than the first preset humidity, thereby achieving automatic adjustment of the humidity control system.
[0062] Continue to refer to Figure 1 Along the extension direction of the water intake pipe 1, the orthographic projection of the water intake pipe 1 coincides with the orthographic projection of the air inlet pipe section 22, or, along the extension direction of the water intake pipe 1, the orthographic projection of the water intake pipe 1 is located inside the orthographic projection of the air inlet pipe section 22. In this way, the port of the air inlet pipe section 22 near the air supply pipe section 23 is basically aligned with the water intake pipe 1. At this time, the flow resistance of the air flowing inside the water intake pipe 1 is low, and most of the airflow passes through the inner flow channel 11, flowing to the air outlet along with the humidified water vapor from the water intake pipe 1. Only a small portion of the airflow passes through the outer flow channel 21 to further dry the moisture-absorbing component 3 for repeated water storage in the high-humidity environment of the next flight segment.
[0063] Based on this, the flow area S1 of the air inlet pipe section 22 is smaller than the flow area S2 of the air supply pipe section 23. The drainage pipe 2 also includes a transition pipe section 24 connecting the air inlet pipe section 22 and the air supply pipe section 23. From the air inlet to the air supply outlet, the flow area of the transition pipe section 24 gradually increases until it is consistent with the air supply pipe section 23, thereby avoiding the problem of noise caused by the high air velocity near the air supply outlet of the drainage pipe 2.
[0064] In some embodiments of this application, the flow area S1 of the air inlet duct section 22 and the flow area S2 of the air outlet duct section 23 satisfy: S2 = (1.8~2.5) * S1, and the flow area S1 of the air inlet duct section 22 and the flow area S3 of the water suction pipe 1 satisfy: S3 = (0.8~1.0) * S1. The above arrangement can ensure that the air volume flowing through the inner flow channel 11 and the outer flow channel 21 is not significantly different, and at the same time ensure that the air velocity flowing through the outer flow channel 21 does not change significantly. This ensures that the air velocity at the air outlet is moderate, avoiding a large air velocity at the grille in the cabin connected to the air outlet, which would cause passengers to feel too strong a draft. At the same time, it can avoid the problem of uneven airflow and poor comfort in the cabin caused by too low an air velocity.
[0065] The moisture-absorbing element 3 surrounds the outer periphery of the water-absorbing pipe 1 and is in close contact with the outer periphery to completely cover the outer periphery of the water-absorbing pipe 1, ensuring that the water-absorbing pipe 1 can efficiently absorb the moisture stored in the moisture-absorbing element 3. Of course, the moisture-absorbing element 3 may also partially cover the outer periphery of the water-absorbing pipe 1.
[0066] In some embodiments of this application, the inner wall of the hydrophobic conduit 2 is coated with a hydrophobic material layer, or the hydrophobic conduit 2 is made of a hydrophobic material. For example, the hydrophobic material is PVDF (Teflon), perfluoropolyether, polyolefin, polycarbonate, polyamide, etc., that is, the hydrophobic conduit 2 has hydrophobic characteristics and low flow resistance, which can ensure smooth airflow and no free water accumulation.
[0067] To increase the contact area between the flowing air and the inner flow channel 11, ensuring a large and dense contact surface between the water and the crossflow air, and guaranteeing a better humidification effect for the airflow passing through the inner flow channel 11, such as... Figure 3 As shown, the water suction pipe 1 is provided with a perforated structure 12 that connects to the inner flow channel 11.
[0068] For example, the perforated structure 12 includes a plurality of through holes arranged in an array, the through direction of which is approximately perpendicular to the extension direction of the water absorption pipe 1. This application does not specifically limit the arrangement or through direction of the perforated structure 12. For example, the through holes can also be arranged radially, and their shapes can be polygonal, circular, elliptical, star-shaped, etc.
[0069] The water absorption pipe 1 can be made of materials with good water absorption and evaporation properties, such as glass fiber-based composite materials, organic wet films, inorganic wet films, aluminum alloy mesh wet films, stainless steel perforated wet films, and ceramic wet films. This application does not specify the specific materials used to manufacture the water absorption pipe 1.
[0070] In other embodiments of this application, an air handling system for an aircraft is also provided. This air handling system includes a cooling component, a mixing chamber, and a humidity control system as described in any of the foregoing technical solutions. The cooling component cools the gas to obtain a cold airflow. The mixing chamber mixes the cold airflow with circulating air from a recirculation system, forming a mixed airflow at the outlet. The humidity control system has a hydrophobic duct 2 with an air inlet and an air outlet. The air inlet communicates with the air outlet, and the air outlet communicates with the air outlet of the aircraft cabin.
[0071] In practical use, this air handling system for aircraft allows the moisture-absorbing component 3 to absorb moisture from the airflow passing through the outer channel 21 as the airflow from the mixing chamber flows through it, thus drying the airflow and reducing its humidity. Furthermore, when the airflow from the mixing chamber passes through the inner channel 11, the moisture-absorbing component 3 provides water to the water-absorbing pipe 1, causing the water stored in the inner pipe to evaporate and humidify the airflow in the inner channel 11, thereby regulating the humidity of the airflow in both the inner and outer channels 21.
[0072] Specifically, when the measured air humidity value is greater than the second preset humidity, it indicates that the humidity of the previously flowing air was high. The closure 5 closes, and the airflow passes through the outer channel 21 between the moisture-absorbing element 3 and the drainage pipe 2. The moisture-absorbing element 3 absorbs and stores free water from the humid air, and the inner pipe, due to its high water absorption properties, absorbs the moisture in the moisture-absorbing element 3. When the measured air humidity value is less than the first preset humidity, it indicates that the humidity of the previously flowing air was low. The closure 5 opens, and most of the relatively dry air flows out through the inner channel 11 within the inner pipe. The moisture stored in the inner pipe evaporates from the perforated structure 12 of the inner pipe, humidifying the dry air. A small portion of the airflow passes through the outer channel 21, further drying the moisture-absorbing element 3 for repeated water storage. The moisture-absorbing element 3 provides a water source for the drainage pipe 1. Simultaneously, because the water absorption capacity of the airflow flowing through the inner channel 11 is limited, the humidification process is automatically regulated, and the air will not become oversaturated.
[0073] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.
[0074] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims. Furthermore, specific examples have been used in the specification to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application, and the content of this specification should not be construed as a limitation of this application.
Claims
1. A humidity control system, characterized in that, include: The water intake pipe (1) has an internal flow channel (11) and is made of absorbent material; A hydrophobic conduit (2) is fitted around the outer periphery of the absorbent conduit (1), and the inner wall of the hydrophobic conduit (2) is coated with a hydrophobic material layer or the hydrophobic conduit (2) is made of a hydrophobic material; A moisture-absorbing component (3) is disposed between the water-absorbing pipe (1) and the water-draining pipe (2). The inner side of the moisture-absorbing component (3) is in contact with the water-absorbing pipe (1), and the outer side of the moisture-absorbing component (3) is spaced apart from the water-draining pipe (2) to form an external flow channel (21). The moisture-absorbing element (3) can absorb and store the water vapor of the airflow flowing through the outer channel (21), and the water absorption pipe (1) has a higher water absorption capacity than the moisture-absorbing element (3), so as to adjust the humidity of the airflow in the inner channel (11) and the outer channel (21).
2. The humidity control system according to claim 1, characterized in that, The drainage pipe (2) has an air inlet and an air outlet, and includes an air inlet pipe section (22) near the air inlet and an air outlet pipe section (23) near the air outlet. The air outlet pipe section (23) is sleeved on the outer periphery of the moisture-absorbing element (3) and is spaced apart from the moisture-absorbing element (3) to form the external flow channel (21). The humidity control system further includes: A humidity detection element (4) is installed on the air inlet pipe section (22).
3. The humidity control system according to claim 2, characterized in that, Also includes: A control component, connected to the water intake pipe (1), is capable of controlling the airflow through the outer channel (21), or controlling the airflow to flow through both the inner channel (11) and the outer channel (21) simultaneously.
4. The humidity control system according to claim 3, characterized in that, The control component includes: A closure (5) is provided at one end of the water intake pipe (1) near the air inlet; The control module is electrically connected to the humidity detection element (4) and the closure (5). When the humidity detection element (4) detects that the humidity of the airflow is lower than the first preset humidity, the control module controls the closure (5) to open; When the humidity detection element (4) detects that the humidity of the airflow is higher than the second preset humidity, the control module controls the closure (5) to close, and the second preset humidity is greater than the first preset humidity.
5. The humidity control system according to claim 2, characterized in that, Along the extension direction of the water suction pipe (1), the orthographic projection of the water suction pipe (1) coincides with the orthographic projection of the air inlet pipe section (22). Alternatively, along the extension direction of the water suction pipe (1), the orthographic projection of the water suction pipe (1) is located within the orthographic projection of the air inlet pipe section (22).
6. The humidity control system according to claim 2 or 5, characterized in that, The flow area S1 of the air inlet pipe section (22) is smaller than the flow area S2 of the air outlet pipe section (23). The drainage pipe (2) also includes a transition pipe section (24) connecting the air inlet pipe section (22) and the air outlet pipe section (23). The flow area of the transition pipe section (24) gradually increases from the air inlet to the air outlet.
7. The humidity control system according to claim 6, characterized in that, The flow area S1 of the air inlet pipe section (22) and the flow area S2 of the air supply pipe section (23) satisfy: S2 = (1.8~2.5) * S1, and the flow area S1 of the air inlet pipe section (22) and the flow area S3 of the water suction pipe (1) satisfy: S3 = (0.8~1.0) * S1.
8. The humidity control system according to claim 1, characterized in that, The moisture-absorbing element (3) surrounds the outer periphery of the water-absorbing pipe (1) and completely wraps around the outer periphery.
9. The humidity control system according to claim 1, characterized in that, The water suction pipe (1) is provided with a perforated structure (12) that connects to the inner flow channel (11).
10. An air handling system for an aircraft, characterized in that, include: Refrigeration components are used to cool gases to obtain cold airflow. A mixing chamber mixes the cooled airflow and recirculated air from the recirculation system, forming a mixed airflow at the outlet of the mixing chamber. As described in any one of claims 1 to 9, the humidity control system has a hydrophobic pipe (2) with an air inlet and an air outlet, the air inlet being connected to the air outlet of the mixing chamber, and the air outlet being connected to the air outlet of the aircraft cabin.