Mixing cavity air drying device and mixing cavity air dryness control system

Abstract

The utility model relates to a mixing cavity air drying device which comprises a first input pipeline, a second input pipeline, a third input pipeline and a fourth input pipeline. The second input pipeline is used for feeding engine bleed air and converges with the first branch pipeline to form a third input pipeline; the fourth input pipeline is used for feeding air-conditioning airflow from the air-conditioning assembly and is converged with the second branch pipeline to form a fifth input pipeline; the dehumidification runner comprises a drying part and a regeneration part, gas from the fifth input pipeline passes through the drying part to generate dried recycle gas, regeneration gas from the third input pipeline passes through the regeneration part to remove moisture in the dehumidification runner, and the mixing cavity receives the dried recycle gas through the sixth pipeline. The device can dry recycled gas from the airplane passenger cabin and is good in dehumidification effect. In addition, the utility model further relates to a mixing cavity air dryness control system.

Description

Technical Field

[0001] The utility model relates to a mixing chamber air drying device, in particular to a mixing chamber air drying device for an aircraft. In addition, the utility model also relates to a mixing chamber air dryness control system. Background Art

[0002] Aircraft air conditioning systems generally have a mixing chamber to store and distribute air. In order to save air source bleed air, a recirculation system is set up on the aircraft to recycle part of the cabin air. The air in the mixing chamber comes from the cold air flow provided by the air conditioning component and the secondary air under the cabin floor provided by the recirculation system. Since the secondary air under the cabin floor contains the exhaled air of the passengers, its humidity will be greater than the humidity of the fresh air provided by the air conditioning component. After the two air streams are mixed, the relative humidity increases, which is easy to produce condensation water on the cold wall surface.

[0003] After a long period of operation, water will accumulate on the inner surface and bottom of the mixing chamber. In more serious cases, moisture may be distributed through the mixing chamber and penetrate into the aircraft insulation layer, greatly increasing the weight of the aircraft and possibly corroding the fuselage structure. Therefore, it is necessary to remove water / humidity or dry the air entering the mixing chamber.

[0004] The invention patent with publication number CN115183341A discloses a mixing chamber device with a water removal function. The invention mainly improves the aircraft mixing chamber body, and sets a mixing chamber shell, a water collection tank, and a drain port. When the air moves in the spiral pipeline of the mixing chamber inner shell, it brings water to the outer shell, and then discharges it out of the aircraft through the drain port of the outer shell. The technical solution disclosed in the invention is essentially a physical water removal method for the mixing chamber, and its water removal effect has room for further improvement.

[0005] Therefore, there is still a need to provide an improved mixing chamber air drying device that can overcome one or more disadvantages of the water removal devices in the prior art. Utility Model Content

[0006] The utility model aims to provide a mixing chamber air drying device, which has the ability to dry the air in the mixing chamber of an aircraft such as an airplane.

[0007] According to one aspect of the utility model, a mixing chamber air drying device is proposed, which may include: a first input pipeline, the first input pipeline is used to feed recirculated gas and is divided into a first branch pipeline and a second branch pipeline; a second input pipeline, the second input pipeline is used to feed bleed air from an aircraft engine, and merges with the first branch pipeline to form a third input pipeline; a fourth input pipeline, the fourth input pipeline is used to feed air-conditioned airflow from an air-conditioning component, and merges with the second branch pipeline to form a fifth input pipeline; a dehumidification wheel, the dehumidification wheel includes a drying section and a regeneration section, wherein the gas from the fifth input pipeline passes through the drying section to generate dried recirculated gas, and the regenerated gas from the third input pipeline passes through the regeneration section to at least partially remove moisture in the dehumidification wheel, and a mixing chamber, the mixing chamber receives the dried recirculated gas via a sixth pipeline connected between the dehumidification wheel and the mixing chamber.

[0008] The mixing chamber air drying device can dry the recirculated air from the aircraft cabin, has a good dehumidification effect, avoids water accumulation on the inner surface or bottom of the mixing chamber, and prevents moisture from being distributed through the mixing chamber and seeping into the aircraft insulation layer, thereby reducing the weight of the aircraft and ensuring the structural safety of the aircraft.

[0009] According to the above aspects of the utility model, preferably, the mixing chamber air drying device may further include a filtering device, which is arranged in the first input pipeline to filter the recirculated gas. In this way, harmful substances such as dust that may be contained in the recirculated gas can be filtered out, so as to extend the service life of the dehumidification wheel and provide cleaner air for the aircraft cabin.

[0010] According to the above aspects of the utility model, in order to improve the air supply efficiency and control the flow rate of the recirculated gas, preferably, the mixing chamber air drying device may also include a suction device, which is arranged in the first input pipeline to suck the recirculated gas from the aircraft cabin.

[0011] According to the above aspects of the utility model, preferably, the mixing chamber air drying device may further include a trim air valve, which is arranged in the second input pipeline to adjust the flow rate of the bleed air fed by the aircraft engine. In this way, the flow rate of the engine bleed air entering the mixing chamber air drying device can be adjusted via the trim air valve, thereby controlling the temperature of the regeneration gas.

[0012] According to the above aspects of the utility model, preferably, the mixing chamber air drying device may further include a first sensor, which is arranged in the third input pipeline to measure the regeneration temperature of the regeneration gas in the third input pipeline. In this way, the opening of the trim air valve can be adjusted based on the regeneration temperature sensed by the first sensor, so as to obtain the desired regeneration gas temperature.

[0013] According to the above aspects of the present invention, in order to strike a balance between the regeneration efficiency and the service life of the dehumidification wheel, preferably, the regeneration temperature of the regeneration gas may be between 40 degrees and 80 degrees.

[0014] According to the above aspects of the utility model, in order to control the humidity or dryness in the mixing chamber within a desired range, preferably, the mixing chamber air drying device may also include a second sensor, which is arranged in the sixth pipeline to measure the dryness or relative humidity of the dried recycled gas.

[0015] According to the above aspects of the utility model, preferably, the first input pipeline, the second input pipeline, the third input pipeline, the fourth input pipeline, the fifth input pipeline, the dehumidification rotor and the sixth pipeline each include two and are symmetrically arranged on the aircraft. In this way, engine bleed air can be provided through the engines installed on both sides of the aircraft respectively, and can serve as backup for each other.

[0016] According to another aspect of the utility model, a mixing chamber air dryness control system is proposed, which may include: a mixing chamber air drying device, the mixing chamber air drying device including: a first input pipeline, the first input pipeline is used to feed the recirculated gas and is divided into a first branch pipeline and a second branch pipeline; a second input pipeline, the second input pipeline is used to feed the bleed air from the aircraft engine, and merges with the first branch pipeline to form a third input pipeline, wherein a balancing air valve is provided in the second input pipeline to adjust the flow rate of the bleed air fed through the aircraft engine, and wherein a first sensor is provided in the third input pipeline to measure the regeneration temperature of the regenerated gas in the third input pipeline; a fourth input pipeline, the fourth input pipeline is used to feed the air conditioning airflow from the air conditioning component, and merges with the second branch pipeline to form a third input pipeline. a fifth input line; a dehumidification rotor, the dehumidification rotor comprising a drying section and a regeneration section, wherein the gas from the fifth input line passes through the drying section to generate dried recirculated gas, and the regenerated gas from the third input line passes through the regeneration section to at least partially remove moisture in the dehumidification rotor; a mixing chamber, the mixing chamber receives the dried recirculated gas via a sixth line connected between the dehumidification rotor and the mixing chamber, wherein a second sensor is provided in the sixth line to measure the dryness of the dried recirculated gas, wherein the dried recirculated gas is mixed with bleed air from an aircraft engine in the mixing chamber to be supplied to the aircraft cabin; and a control device, the control device adjusts the opening of the trim air valve and the rotation speed of the dehumidification rotor based on data from the first sensor and the second sensor to keep the relative humidity of the gas in the mixing chamber within a predetermined threshold range.

[0017] The mixing chamber air dryness control system can keep the relative humidity of the gas in the mixing chamber within a predetermined threshold range, and the dehumidification wheel maintains the dehumidification efficiency and ensures that the regeneration area does not overheat.

[0018] According to the above aspects of the utility model, preferably, the relative humidity is maintained at 20% or below, which helps to prevent the aircraft from gaining weight and improves fuel economy.

[0019] Therefore, the mixing chamber air drying device of the utility model can meet the use requirements, overcome the shortcomings of the prior art and achieve the predetermined purpose. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to further clearly describe the mixing chamber air drying device according to the utility model, the utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. In the accompanying drawings:

[0021] Figure 1 A schematic diagram of a mixing chamber air drying device according to a non-limiting embodiment of the present invention is shown.

[0022] The above drawings are merely schematic and are not drawn strictly to scale.

[0023] List of reference numerals in the figures and embodiments:

[0024] 100-Mixing Chamber Air Drying Device, including:

[0025] 10- The first input pipeline includes:

[0026] 11- first branch pipeline;

[0027] 12- second branch pipeline;

[0028] 13- Filtering device;

[0029] 14- Suction device;

[0030] 20- The second input pipeline includes:

[0031] 20A-trim air valve;

[0032] 30- The third input pipeline includes:

[0033] 30A-first sensor;

[0034] 40- The fourth input pipeline includes:

[0035] 40A-air conditioning components;

[0036] 50 - fifth input pipeline;

[0037] 60-Dehumidification Wheel, including:

[0038] 61- drying section;

[0039] 62-Regeneration Department;

[0040] 70-mixing chamber;

[0041] 80- The sixth pipeline includes:

[0042] 80A - second sensor;

[0043] 200-Control device. DETAILED DESCRIPTION

[0044] It should be understood that, unless explicitly stated otherwise, the present invention may adopt various alternative orientations and step sequences. It should also be understood that the specific devices shown in the drawings and described in the specification are merely exemplary embodiments of the utility model concepts disclosed and defined herein. Therefore, unless otherwise explicitly stated, the specific orientations, directions or other physical features involved in the various embodiments disclosed should not be considered as limitations.

[0045] Figure 1 A schematic perspective view of a mixing chamber air drying device 100 according to a non-limiting embodiment of the present invention is shown.

[0046] As shown in the figure and as a non-limiting example, the mixing chamber air drying device 100 can mainly include a first input pipeline 10, a second input pipeline 20, a third input pipeline 30, a fourth input pipeline 40, a fifth input pipeline 50, a dehumidification wheel 60 and a mixing chamber 70, etc.

[0047] The first input line 10 can be used to feed recirculated gas, for example for feeding recirculated gas from an aircraft cabin.The first input line 10 can be divided into a first branch line 11 and a second branch line 12 at a branching point, for example via a tee or the like.

[0048] A filter device 13 and / or a suction device 14 may also be provided in the first input pipeline 10. As an example, the filter device 13 may be provided upstream of the branch point in the first input pipeline 10, and the suction device 14 may be provided between the filter device 13 and the branch point.

[0049] The filter device 13 may be any type of filter known in the art, in particular an air filter, and preferably comprises a replaceable filter element to filter the recirculating gas.

[0050] The suction device 14 may be, for example, a fan or a blower, etc., for sucking the recirculated air from the aircraft cabin.

[0051] The second input line 20 may be used to feed bleed air from an aircraft engine (bleed air with a higher temperature, for example, a temperature of about 200 degrees Celsius).

[0052] Preferably, a trim air valve 20A may be provided in the second input line 20 to adjust the flow rate of the bleed air fed through the aircraft engine.

[0053] The second input line 20 may merge with the first branch line 11 to form a third input line 30. Thus, in the third input line 30, bleed air from the aircraft engine is mixed with recirculated gas from the aircraft cabin to form regeneration gas.

[0054] In order to strike a balance between component life and regeneration efficiency, the regeneration temperature of the regeneration gas can be preferably controlled between 40 and 80 degrees. In this way, the dehumidification wheel 60 can maintain the dehumidification efficiency and ensure that the temperature of the regeneration part 62 does not exceed the temperature.

[0055] To this end, the mixing chamber air drying device 100 may further include a first sensor 30A, which may be disposed in the third input pipeline 30 to measure the regeneration temperature of the regeneration gas in the third input pipeline 30. For example, the first sensor 30A may be various temperature sensors known in the art.

[0056] The fourth input line 40 can be used to feed the conditioned airflow from the conditioning assembly 40A, which can be a relatively cool airflow. For example, the temperature of the conditioned airflow can be lower than the temperature of the recirculation gas.

[0057] As shown, the fourth input line 40 may merge with the second branch line 12 to form a fifth input line 50 .

[0058] The dehumidification wheel 60 may include various types of dehumidification wheels known in the art. In the embodiment shown in the drawings, the dehumidification wheel 60 may include a drying part 61 and a regeneration part 62 .

[0059] As shown in the figure, the regeneration gas from the third input pipeline 30 passes through the regeneration section 62, for example, from the left side to the right side in the figure, to at least partially remove the moisture in the dehumidification wheel 60. After passing through the dehumidification wheel 60, the regeneration gas can be discharged to the outside, for example, the outside of the aircraft fuselage.

[0060] This regeneration is mainly achieved by means of a higher temperature of the regeneration gas, such as the regeneration temperature between 40 and 80 degrees as mentioned above, and the structure and working principle of this dehumidification wheel are well known in the art, and may include corresponding pipe joints and sealing devices, etc. to achieve the desired airflow guiding effect, therefore, this article will not describe it in detail.

[0061] The gas from the fifth input line 50 passes through the drying section 61 , for example, from the right side to the left side in the figure, to generate a dried recirculation gas. The dried recirculation gas may enter the sixth line 80 .

[0062] As shown in the figure, the sixth pipeline 80 is connected between the dehumidification wheel 60 and the mixing chamber 70 so as to feed the dried recirculation gas to the mixing chamber 70 .

[0063] As a preferred embodiment, the mixing chamber air drying device 100 further includes a second sensor 80A, which is disposed in the sixth pipeline 80 to measure the relative humidity of the dried recirculation gas. As an example, the second sensor 80A may be a psychrometer or a moisture meter.

[0064] It should be understood that the terms "dryness" and "relative humidity" as used in this article can be used interchangeably to express the ratio of the absolute humidity in the air to the saturated absolute humidity at the same temperature and pressure, as a percentage value, that is, the ratio of the mass of water vapor contained in a certain humid air to the mass of water vapor contained in saturated air at the same temperature and pressure.

[0065] like Figure 1 As schematically shown in FIG. 1 , the first input pipeline 10, the second input pipeline 20, the third input pipeline 30, the fourth input pipeline 40, the fifth input pipeline 50, the dehumidification rotor 60 and the sixth pipeline 80 may each include two and be symmetrically arranged on the aircraft. For example, these components are arranged symmetrically about the mixing chamber 70 in the span direction of the aircraft.

[0066] According to a non-limiting embodiment of the present invention, a mixing chamber air dryness control system may include: a mixing chamber air drying device 100 and a control device 200 .

[0067] The mixing chamber air drying device 100 may mainly include: a first input pipeline 10, a second input pipeline 20, a third input pipeline 30, a fourth input pipeline 40, a fifth input pipeline 50, a dehumidification wheel 60 and a mixing chamber 70, etc. The arrangement and structure of these components may be similar to the components described above, and may work in a similar manner.

[0068] like Figure 1 As shown by the dotted lines in FIG. 1 , the control device 200 may be communicatively connected to the first sensor 30A, the second sensor 80A, the trim air damper 20A, the dehumidification wheel 60, and the like.

[0069] Thus, the control device 200 adjusts the opening of the trim air damper 20A and the rotation speed of the dehumidification wheel 60 based on the data from the first sensor 30A and the second sensor 80A to keep the relative humidity of the gas in the mixing chamber within a predetermined threshold range.

[0070] As an example, the relative humidity of the gas in the mixing chamber may be maintained at 20% and below.

[0071] The control device 200 may include electronic components such as a controller and a memory. As an example, the controller may be embodied as a dedicated integrated circuit chip and / or some other type of highly integrated circuit chip. Alternatively, the controller may also be in the form of a microprocessor or discrete electrical and electronic components.

[0072] As will be described more fully below, the controller may adjust the opening of the trim air damper 20A and the speed of the dehumidification wheel 60 based on signals received from the first sensor 30A and the second sensor 80A and a control scheme stored in a memory (not shown).

[0073] As an example, the memory may include a non-transitory storage medium that electronically stores information. The memory may include one or more of an optically readable storage medium, a charge-based storage medium (e.g., EEPROM, RAM, etc.), a solid-state storage medium (e.g., a flash drive, etc.), and / or other electronically readable storage medium.

[0074] The electronic memory may store control algorithms, predetermined temperature values, desired dryness or relative humidity for the mixing chamber, information determined by the processor, information received from sensors, or other information to implement functionality as described herein.

[0075] The terms "left to right", "right to left", "span-wise direction" used herein to indicate position or orientation, and the terms "first", "second", etc. used to indicate order are only intended to enable those of ordinary skill in the art to better understand the concept of the present invention shown in the form of a preferred embodiment, and are not intended to limit the present invention. Unless otherwise specified, all orders, positions or orientations are only used for the purpose of distinguishing one element / component / structure from another element / component / structure, and unless otherwise specified, do not represent any specific order, order of operation, direction or orientation. For example, in an alternative embodiment, the "first branch pipeline" may be the "second branch pipeline", and the "first sensor" may alternatively refer to the "second sensor".

[0076] In summary, the mixing chamber air drying device 100 according to the embodiment of the utility model overcomes the shortcomings of the prior art and achieves the intended purpose of the utility model.

[0077] Although the mixing chamber air drying device of the utility model is described above in combination with the preferred embodiments, those skilled in the art should recognize that the above examples are only for illustration and cannot be used as limitations on the utility model. Therefore, various modifications and variations can be made to the utility model within the spirit of the claims, and these modifications and variations will fall within the scope required by the claims of the utility model.

Claims

1. A mixing chamber air drying device, characterized in that: The mixing chamber air drying device (100) comprises: a first input pipeline (10) for feeding recirculation gas and branching into a first branch pipeline (11) and a second branch pipeline (12); a second input pipeline (20), the second input pipeline being used to feed bleed air from an aircraft engine and merging with the first branch pipeline (11) to form a third input pipeline (30); a fourth input pipeline (40), the fourth input pipeline being used to feed the air-conditioning airflow from the air-conditioning component (40A) and merging with the second branch pipeline (12) to form a fifth input pipeline (50); a dehumidification rotor (60), the dehumidification rotor comprising a drying section (61) and a regeneration section (62), wherein the gas from the fifth input pipeline (50) passes through the drying section (61) to generate dried recirculating gas, and the regeneration gas from the third input pipeline (30) passes through the regeneration section (62) to at least partially remove moisture in the dehumidification rotor (60), and A mixing chamber (70) receives the dried recirculating gas via a sixth pipeline (80) connected between the dehumidification wheel (60) and the mixing chamber (70).

2. The mixing chamber air drying device according to claim 1, characterized in that: The mixing chamber air drying device (100) further comprises a filtering device (13), which is arranged in the first input pipeline (10) to filter the recirculating gas.

3. The mixing chamber air drying device according to claim 1, characterized in that: The mixing chamber air drying device (100) further comprises a suction device (14), which is arranged in the first input line (10) to suck the recirculated gas from the aircraft cabin.

4. The mixing chamber air drying device according to any one of claims 1 to 3, characterized in that: The mixing chamber air drying device (100) further comprises a trim air valve (20A), which is arranged in the second input pipeline (20) to adjust the flow rate of the bleed air fed through the aircraft engine.

5. The mixing chamber air drying device according to any one of claims 1 to 3, characterized in that: The mixing chamber air drying device (100) further comprises a first sensor (30A), which is arranged in the third input pipeline (30) to measure the regeneration temperature of the regeneration gas in the third input pipeline (30).

6. The mixing chamber air drying device according to claim 5, characterized in that: The regeneration temperature of the regeneration gas is between 40 degrees and 80 degrees.

7. The mixing chamber air drying device according to any one of claims 1 to 3, characterized in that: The mixing chamber air drying device (100) further comprises a second sensor (80A) which is arranged in the sixth pipeline (80) to measure the dryness of the dried recirculated gas.

8. The mixing chamber air drying device according to any one of claims 1 to 3, characterized in that: The first input pipeline (10), the second input pipeline (20), the third input pipeline (30), the fourth input pipeline (40), the fifth input pipeline (50), the dehumidification wheel (60) and the sixth pipeline (80) each include two and are symmetrically arranged on the aircraft.

9. A mixing chamber air dryness control system, characterized in that: The mixing chamber air dryness control system comprises: A mixing chamber air drying device (100), the mixing chamber air drying device comprising: a first input pipeline (10) for feeding recirculation gas and branching into a first branch pipeline (11) and a second branch pipeline (12); a second input line (20) for feeding bleed air from an aircraft engine and merging with the first branch line (11) to form a third input line (30), wherein a trim air valve (20A) is provided in the second input line (20) to adjust the flow rate of the bleed air fed via the aircraft engine, and wherein a first sensor (30A) is provided in the third input line (30) to measure the regeneration temperature of the regeneration gas in the third input line (30); a fourth input pipeline (40), the fourth input pipeline being used to feed the air-conditioning airflow from the air-conditioning component (40A) and merging with the second branch pipeline (12) to form a fifth input pipeline (50); a dehumidification rotor (60), the dehumidification rotor comprising a drying section (61) and a regeneration section (62), wherein the gas from the fifth input pipeline (50) passes through the drying section (61) to generate dried recirculation gas, and the regeneration gas from the third input pipeline (30) passes through the regeneration section (62) to at least partially remove moisture in the dehumidification rotor (60); and a mixing chamber (70) receiving the dried recirculated gas via a sixth pipe (80) connected between the dehumidification rotor (60) and the mixing chamber (70), wherein a second sensor (80A) is arranged in the sixth pipe (80) to measure the relative humidity of the dried recirculated gas, wherein the dried recirculated gas is mixed with bleed air from the aircraft engine in the mixing chamber (70) to be supplied to the aircraft cabin; and A control device (200) is provided, wherein the control device adjusts the opening of the trim air valve (20A) and the rotation speed of the dehumidification wheel (60) based on data from the first sensor (30A) and the second sensor (80A) so as to keep the relative humidity of the gas in the mixing chamber within a predetermined threshold range.

10. The mixing chamber air dryness control system according to claim 9, characterized in that: The relative humidity was maintained at 20% and below.

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