Air inlet damper actuating system
By installing heating parts, telescopic sleeves or vibrators on the actuating push rod, the problem of ice accumulation in low-temperature and high-cold environments is solved, and the normal operation of the intake damper actuation system is ensured.
Patent Information
- Application Number
- CN202421814740.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-07-29
AI Technical Summary
In low temperature and high cold environments, ice is easily accumulated on the actuating push rod of the aircraft auxiliary power device, resulting in stagnation and affecting the normal function of the intake damper actuation system.
Ice removal and prevention components are provided on the actuating push rod, including heating parts, telescopic sleeves or vibrators, to reduce ice accumulation by heating, telescopic or vibration.
Effectively avoid the accumulation of ice on the actuating push rod in low temperature and high cold environments, prevent stagnation, and ensure the normal function of the intake damper actuation system.
Smart Images
Figure CN223132371U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of aircraft, specifically to an aircraft auxiliary power unit, and more specifically to an intake air damper actuating system for an aircraft auxiliary power unit. Background Art
[0002] The aircraft auxiliary power unit is an important independent system on the aircraft, which is mainly used to start the main engine of the aircraft on the ground and provide bleed air and power supply for the aircraft's air conditioning system and electrical equipment on the ground or in flight. Since the aircraft auxiliary power unit does not generate aircraft thrust, its fuel consumption is greatly reduced compared with the main engine, which can save fuel and reduce noise.
[0003] Generally speaking, the aircraft auxiliary power unit is mainly used on the ground and stops working after the aircraft takes off. However, when the aircraft encounters an engine failure during flight, for example, when the main engine stops in the air, the aircraft auxiliary power unit can be restarted to provide air source or power supply for the aircraft and provide power for the restart of the engine.
[0004] Therefore, the aircraft auxiliary power unit is an important guarantee for the normal operation of the aircraft.
[0005] The aircraft auxiliary power unit includes an intake air damper, and a typical intake air damper actuating system includes an actuating push rod. The intake air damper actuating system is connected to the intake air damper through the actuating push rod. The actuating push rod can move the intake air damper between an open position and a closed position. When operating in a low-temperature and high-cold environment, such as at a high-cold airport in high-latitude regions or at high altitudes, the intake air of the intake duct may be mixed with dry / wet snow, mixed-state ice crystals, and supercooled water droplets. These factors may cause ice and snow to adhere to the surface of the actuating push rod. During long-term operation, more ice may accumulate on the actuating push rod, resulting in the jamming of the actuating push rod and the inability to open and close the intake air damper normally. In severe cases, large ice crystals may fall off and be inhaled into the aircraft auxiliary power unit, such as hitting the high-speed rotating compressor blades, causing mechanical damage inside the aircraft auxiliary power unit.
[0006] In the prior art, anti-icing and de-icing fluid chemicals are commonly used to treat the ice layer at the intake air damper. However, this is generally applied when the intake air damper of the aircraft auxiliary power unit has not been opened to treat the ice layer on the surface of the intake air damper, rather than to treat the ice layer on the actuating push rod. Due to the flammability of the anti-icing and de-icing fluid chemicals, if they enter the aircraft auxiliary power unit, it may cause the aircraft auxiliary power unit to overrun or catch fire. Therefore, anti-icing and de-icing fluid chemicals are not suitable for treating the ice layer on the actuating push rod when the intake air damper is open during operation in a low-temperature and high-cold environment.
[0007] Therefore, there is an urgent need for an intake air damper actuating system that can reduce or avoid the accumulation of ice on the actuating push rod during operation in low-temperature and high-altitude environments, prevent the actuating push rod from getting stuck, and ensure the normal function of the intake air damper actuating system. Summary of the Utility Model
[0008] To solve the problems existing in the above-mentioned prior art, the present utility model proposes an intake air damper actuating system, the purpose of which is to reduce or avoid the accumulation of ice on the actuating push rod during operation in low-temperature and high-altitude environments, prevent the actuating push rod from getting stuck, and ensure the normal function of the intake air damper actuating system.
[0009] Therefore, the present utility model proposes an intake air damper actuating system. The intake air damper actuating system is used for an aircraft auxiliary power unit. The aircraft auxiliary power unit includes an intake air damper. The intake air damper actuating system includes an actuating push rod. The actuating push rod is configured to move the intake air damper between a closed position and an open position. Wherein, the intake air damper actuating system includes an anti-icing and de-icing component, and the anti-icing and de-icing component is connected to the actuating push rod or arranged in the actuating push rod, so as to be able to at least perform anti-icing and de-icing on the actuating push rod.
[0010] According to the above technical solution, the intake air damper actuating system of the present utility model can achieve the following beneficial effects: through the anti-icing and de-icing component, at least the anti-icing and de-icing of the actuating push rod can be realized, reducing or avoiding the accumulation of ice on the actuating push rod during operation in low-temperature and high-altitude environments, preventing the actuating push rod from getting stuck, and ensuring the normal function of the intake air damper actuating system. Further, via the actuating push rod, other components directly or indirectly connected to the actuating push rod, such as the intake air damper, can also be anti-iced and de-iced.
[0011] In a preferred embodiment of the present utility model, the anti-icing and de-icing component includes a heating element arranged in the actuating push rod.
[0012] According to the above technical solution, the intake air damper actuating system of the present utility model can achieve the following beneficial effects: through the heating element for the actuating push rod, reducing or avoiding the accumulation of ice on the actuating push rod during operation in low-temperature and high-altitude environments, preventing the actuating push rod from getting stuck, and ensuring the normal function of the intake air damper actuating system.
[0013] In an alternative embodiment of the present utility model, the anti-icing and de-icing component includes a heatable lead screw arranged in the actuating push rod.
[0014] According to the above technical solution, the intake air damper actuating system of the present utility model can achieve the following beneficial effects: through the heatable lead screw, reducing or avoiding the accumulation of ice on the actuating push rod during operation in low-temperature and high-altitude environments, preventing the actuating push rod from getting stuck, and ensuring the normal function of the intake air damper actuating system.
[0015] In a preferred embodiment of the present utility model, the actuating push rod comprises two inner and outer layers, and the heating element is embedded between the two inner and outer layers of the actuating push rod.
[0016] According to the above technical solution, the intake air damper actuating system of the present utility model can achieve the following beneficial effects: By means of the heating element embedded between the two inner and outer layers of the actuating push rod, the accumulation of ice on the actuating push rod during operation in a low-temperature and high-cold environment can be effectively reduced or avoided, the jamming phenomenon of the actuating push rod can be avoided, and the normal function of the intake air damper actuating system can be ensured.
[0017] In a preferred embodiment of the present utility model, the heating element is an electric heating element embedded between the two inner and outer layers of the actuating push rod.
[0018] According to the above technical solution, the intake air damper actuating system of the present utility model can achieve the following beneficial effects: By means of the electric heating element embedded between the two inner and outer layers of the actuating push rod, the accumulation of ice on the actuating push rod during operation in a low-temperature and high-cold environment can be effectively reduced or avoided, the jamming phenomenon of the actuating push rod can be avoided, and the normal function of the intake air damper actuating system can be ensured.
[0019] In an alternative embodiment of the present utility model, the heating element is partially embedded between the two inner and outer layers of the actuating push rod.
[0020] According to the above technical solution, the intake air damper actuating system of the present utility model can achieve the following beneficial effects: By means of the partially embedded heating element, the cost can be saved and the weight can be reduced.
[0021] In an alternative embodiment of the present utility model, the anti-icing component comprises a telescopic sleeve arranged outside the actuating push rod, and the telescopic sleeve is configured to telescopically move on the outer surface of the actuating push rod.
[0022] According to the above technical solution, the intake air damper actuating system of the present utility model can achieve the following beneficial effects: By means of the telescopic sleeve, the accumulation of ice on the actuating push rod can be reduced or avoided.
[0023] In an alternative embodiment of the present utility model, a heating layer is arranged on the inner side of the telescopic sleeve.
[0024] According to the above technical solution, the intake air damper actuating system of the present utility model can achieve the following beneficial effects: By means of the telescopic sleeve with a heating layer arranged on the inner side, the accumulation of ice on the actuating push rod can be more effectively reduced or avoided.
[0025] In an alternative embodiment of the present utility model, the anti-icing component comprises a vibrator arranged on the actuating push rod, and the vibrator is configured to apply vibration to the actuating push rod.
[0026] According to the above technical solution, the intake air damper actuation system of the present utility model can achieve the following beneficial effects: By means of the vibrator for the actuating push rod, the accumulation of ice on the actuating push rod during operation in low-temperature and high-altitude environments can be reduced or avoided, the jamming phenomenon of the actuating push rod can be avoided, and the normal function of the intake air damper actuation system can be ensured.
[0027] In an alternative embodiment of the present utility model, the intake air damper actuation system further includes a controller configured to control the movement of the actuating push rod and capable of supplying power to and controlling the anti-icing component, so as to be able to perform anti-icing on at least the actuating push rod.
[0028] According to the above technical solution, the intake air damper actuation system of the present utility model can achieve the following beneficial effects: No additional power source or controller is required, so as to simplify the structure and reduce the weight.
[0029] It should be understood that the above utility model content is provided to introduce in a simplified form a selection of concepts that will be further described in the detailed description. This does not mean determining the key or essential features of the claimed subject matter, and the scope of the claimed subject matter is uniquely defined by the appended claims. In addition, the claimed subject matter is not limited to embodiments that solve any of the above or any disadvantages pointed out in any part of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] The further features, exemplary embodiments and advantages of the present utility model will be explained in more detail below with reference to the accompanying drawings. It can be understood that this embodiment cannot exhaust the entire scope of the present utility model. It will be further understood that some or all of the features described below can also be combined in other ways, where:
[0031] Figure 1 The intake air damper actuation system according to the present utility model is shown;
[0032] Figure 2 A partial enlarged cross-sectional view of the actuating push rod of the intake air damper actuation system according to a preferred embodiment of the present utility model is shown; (heating element)
[0033] Figure 3 A partial enlarged cross-sectional view of the actuating push rod of the intake air damper actuation system according to another embodiment of the present utility model is shown; (telescopic sleeve)
[0034] Figure 4 A partial enlarged cross-sectional view of the actuating push rod of the intake air damper actuation system according to yet another embodiment of the present utility model is shown; (vibrator)
[0035] Figure 5 The working principle diagram of the intake air damper actuation system according to the present utility model is shown.
[0036] LIST OF REFERENCE NUMERALS
[0037] 1000 Intake air damper actuation system;
[0038] 1001 Actuating push rod;
[0039] 1001i Inner layer of the push rod;
[0040] 1001o Outer layer of the push rod;
[0041] 1001h Heating element;
[0042] 1002 Intake air damper;
[0043] 1003 Actuator;
[0044] 1004 Controller;
[0045] 1005 Telescopic sleeve;
[0046] 1006 Vibrator;
[0047] 1007 Lead screw. Detailed implementation manners
[0048] The present utility model will be described more comprehensively below with reference to the accompanying drawings, in which exemplary embodiments of the present utility model are illustrated. Obviously, all features disclosed in this specification, or all steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any way. Any feature disclosed in this specification, unless specifically stated, can be replaced by other equivalent or similar-purpose alternative features, that is, unless specifically described, each feature is only an example in a series of equivalent or similar features. The technical solutions of the present utility model will be described in various aspects below with reference to the drawings and embodiments.
[0049] In this article, serial numbers such as "first", "second", etc. do not represent order (for example, do not imply a sequential relationship, unless specifically indicated) or priority, importance. The above serial numbers are only used to indicate that they are different and independent devices, elements or steps.
[0050] In this article, terms such as "inner side", "outer side", "inward", "outward", "proximal side", "distal side", etc. are only used to illustrate the relative positions of the respective elements.
[0051] Figure 1Shown is an intake air damper actuation system 1000 according to the present utility model, which is used for an aircraft auxiliary power unit. The aircraft auxiliary power unit includes an intake air damper 1002, and the intake air damper actuation system 1000 includes an actuating push rod 1001. The intake air damper actuation system 1000 is connected to the intake air damper 1002 through the actuating push rod 1001, for example, pivotally connected to a lug on the intake air damper 1002 through a pivot member at the end of the actuating push rod 1001. The actuator 1003, under the control of the controller 1004, controls the actuating push rod 101 to move the intake air damper 1002 between an open position and a closed position.
[0052] The intake air damper actuation system 1000 according to the present utility model includes an anti-icing component, which is connected to the actuating push rod 1001 or disposed in the actuating push rod 1001, and the anti-icing component is configured to act on the actuating push rod 1001 to at least act on the actuating push rod 1001 to reduce or avoid ice accumulation on the actuating push rod 1001. In a preferred embodiment of the present utility model, the anti-icing component is a heating element 1001h configured to heat the actuating push rod 1001 to effectively reduce or avoid ice accumulation on the actuating push rod 1001. In another embodiment of the present utility model, the anti-icing component is a telescopic sleeve 1005 configured to expand and contract on the outer surface of the actuating push rod 1001 to reduce or avoid ice accumulation on the actuating push rod 1001. In yet another embodiment of the present utility model, the anti-icing component is a vibrator 1006 configured to apply vibration to the actuating push rod 1001 to reduce or avoid ice accumulation on the actuating push rod 1001.
[0053] The following will be combined with Figures 2 - 4 , and the actuating push rod 1001 of the intake air damper actuation system 1000 and its anti-icing component in each embodiment of the present utility model will be described in more detail. It should be noted that the embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles of the present utility model and its practical applications, and to enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.
[0054] Figure 2FIG. 0 shows a partial enlarged cross-sectional view of the actuating push rod 1001 of the intake air damper actuating system 1000 according to a preferred embodiment of the present invention. As shown in the figure, the actuating push rod 1001 includes a heating element 1001h disposed within the actuating push rod 1001 for heating the actuating push rod 1001 to effectively reduce or avoid the accumulation of ice on the actuating push rod 1001. Preferably, the actuating push rod 1001 includes an inner layer and an outer layer, that is, a push rod inner layer 1001i and a push rod outer layer 1001o, and the heating element 1001h is preferably embedded between the push rod inner layer 1001i and the push rod outer layer 1001.
[0055] Preferably, the heating element 1001h is an electric heating element embedded between the push rod inner layer 1001i and the push rod outer layer 1001 of the actuating push rod 1001, that is, the heating element 1001h is configured to heat the actuating push rod 1001 in an electric heating manner to effectively reduce or avoid the accumulation of ice on the actuating push rod 1001. Optionally, the heating element 1001h is configured to be embedded in sections between the push rod inner layer 1001i and the push rod outer layer 1001 of the actuating push rod 1001 to save cost and reduce weight.
[0056] Alternatively, in addition to the anti-icing component including a heatable lead screw 1007 disposed within the actuating push rod 1001, that is, the lead screw 1007 is configured to heat the actuating push rod 1001 to reduce or avoid the accumulation of ice on the actuating push rod 1001. In this alternative embodiment, the actuating push rod 1001 may be configured as a single-layer structure instead of a double-layer structure.
[0057] Figure 3 FIG. 10 shows a partial enlarged cross-sectional view of the actuating push rod 1001 of the intake air damper actuating system 1000 according to another embodiment of the present invention. As shown in the figure, the intake air damper actuating system 1000 includes a telescopic sleeve 1005 disposed outside the actuating push rod 1001, and the telescopic sleeve 1005 is configured to be telescopic on the outer surface of the actuating push rod 1001 to reduce or avoid the accumulation of ice on the actuating push rod 1001.
[0058] Preferably, the front end of the telescopic sleeve 1005 is beveled to facilitate the removal of ice crystals condensed on the outer surface of the actuating push rod 1001.
[0059] Optionally, a heating element 1001h is disposed within the actuating push rod 1001, and the description of the heating element 1001h is as described in Figure 2 above.
[0060] Optionally, a heating layer (not shown in the figure) is disposed on the inner side of the telescopic sleeve 1005, which also facilitates more effectively reducing or avoiding the accumulation of ice on the actuating push rod 1001.
[0061] Figure 4Shows a partial enlarged cross-sectional view of the actuating push rod 1001 of the intake air damper actuating system 1000 according to another embodiment of the present utility model. As shown in the figure, the intake air damper actuating system 1000 includes a vibrator 1006 disposed on the actuating push rod 1001, preferably disposed within the actuating push rod 1001, which reduces or avoids the accumulation of ice on the actuating push rod 1001 by applying vibration to the actuating push rod 1001. Optionally, a heating element 1001h is disposed within the actuating push rod 1001, and the description of the heating element 1001h is as described with respect to Figure 2 as described.
[0062] Figure 5 Shows the working principle diagram of the intake air damper actuating system 1000 according to the present utility model. The intake air damper actuating system 1000 includes a controller 1004 of a control module configured to control the movement of the actuating push rod 1001 and to send an anti-icing / de-icing instruction to the actuator 1003 to control the anti-icing / de-icing component to perform anti-icing / de-icing on the actuating push rod 1001. Specifically, the controller 1004 can control the operation of the motor to control the actuating push rod 1001, thereby moving the intake air damper 1002 between the open position and the closed position through the actuating push rod 1001. In addition, the controller 1004 can send an anti-icing / de-icing instruction to the actuator 1004 to control the heating element 1001h to heat the actuating push rod 1001, and / or control the telescopic sleeve 1005 to expand and contract on the outer surface of the actuating push rod 1001, and / or control the vibrator 1006 to apply vibration to the actuating push rod 1001 to reduce or avoid the accumulation of ice on the actuating push rod 1001. For example, the controller 1004 is configured to send an anti-icing / de-icing instruction based on the ambient temperature or the surface temperature of the actuating push rod 1001, or to send an anti-icing / de-icing instruction at regular intervals. Preferably, the controller 1004 can supply power to the anti-icing / de-icing component, so that no additional power source or controller is required, thereby simplifying the structure and reducing the weight.
[0063] In addition, although the above embodiments of the present utility model mainly perform anti-icing / de-icing on the actuating push rod 1001, in other embodiments, it can also perform anti-icing / de-icing on other components connected thereto via the actuating push rod 1001, such as the intake air damper, etc., through heat conduction or other means.
[0064] In this article, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, structure or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, structure or device. Without further limitation, the elements defined by the statement "including..." do not exclude the presence of additional identical elements in the process, method, structure or device including the said elements.
Claims
1. An intake air damper actuating system for an aircraft auxiliary power unit, the aircraft auxiliary power unit including an intake air damper, the intake air damper actuating system including an actuating push rod configured to move the intake air damper between a closed position and an open position, characterized in that, The intake air damper actuating system includes an anti-icing component, and the anti-icing component is connected to the actuating push rod or disposed in the actuating push rod, so as to be able to perform anti-icing on at least the actuating push rod.
2. The intake air damper actuation system according to claim 1, wherein The anti-icing component includes a heating element disposed in the actuating push rod.
3. The intake air damper actuation system according to claim 2, characterized in that, The anti-icing component includes a heatable lead screw disposed in the actuating push rod.
4. The intake air damper actuation system according to claim 2, characterized in that, The actuating push rod includes an inner layer and an outer layer, and the heating element is embedded between the inner layer and the outer layer of the actuating push rod.
5. The intake air damper actuation system according to claim 4, characterized in that, The heating element is an electric heating element embedded between the inner layer and the outer layer of the actuating push rod.
6. The intake air damper actuation system according to claim 4, wherein, The heating element is embedded between the inner layer and the outer layer of the actuating push rod in a segmented manner.
7. The intake air damper actuation system according to any one of claims 1-6, characterized in that, The anti-icing component includes a telescopic sleeve disposed outside the actuating push rod, and the telescopic sleeve is configured to telescopically move on the outer surface of the actuating push rod.
8. The intake air damper actuation system according to claim 7, wherein A heating layer is disposed on the inner side of the telescopic sleeve.
9. The intake air damper actuation system according to claim 1, wherein, The anti-icing component includes a vibrator disposed on the actuating push rod, and the vibrator is configured to apply vibration to the actuating push rod.
10. The intake air damper actuation system according to claim 1, wherein, The intake air damper actuating system further includes a controller, and the controller is configured to control the movement of the actuating push rod, and can supply power to the anti-icing component and control the anti-icing component, so as to be able to perform anti-icing on at least the actuating push rod.