Deicing device and deicing method

Abstract

The present invention belongs to the field of deicing, and specifically relates to a deicing device and a deicing method, including a mounting part, a vibration mechanism and a deicing mechanism. The vibration mechanism is arranged on the mounting part, one end of the deicing mechanism cooperates with the vibration mechanism, and the other end acts on the surface of the object to be deiced. The deicing device provided by the present invention generates a vibration impact through the deicing mechanism to act on the ice layer on the surface of the object, so as to destroy the ice layer structure and reduce the fit between the ice layer and the surface of the object to achieve the removal of the ice layer and the deicing effect. The overall structure is simple and reliable. At the same time, the ice layer destruction effect can be greatly improved by generating high-frequency vibration impact to resonate with the ice layer, and low-power drive can be used to destroy thick ice layers. It is easy to meet lightweight requirements and strict deicing requirements, and has great application prospects for wing deicing.

Description

Technical Field

[0001] The present invention belongs to the field of deicing, and in particular relates to a deicing device and a deicing method. Background Art

[0002] Icing, the freezing of water droplets or condensation of water vapor on surfaces, is a common occurrence in aircraft and on wind turbine blades, and is a significant contributor to aircraft and wind turbine blade accidents. For example, ice can form on surfaces such as the wings, fuselage, engine inlets, propellers, helicopter rotors, and external sensors. Aircraft icing can significantly impact aircraft performance and flight safety. When ice forms on wings and tail fins, it can lead to increased drag, a decrease in lift-to-drag ratio, a reduction in the maximum stall angle of attack, and reduced or even ineffective controllability, severely degrading the aircraft's flight performance.

[0003] To address the risk of icing, current aircraft often use methods such as chemical de-icing, mechanical de-icing, and electric de-icing. Although these methods can effectively remove ice to a certain extent, they often have problems such as large structures, environmental pollution, skin damage, high power consumption, and low efficiency. Therefore, a new anti-icing method using synthetic jet actuators has emerged to meet the needs of lightweighting and miniaturization. However, the current use of actuators generally requires the use of heating equipment for de-icing, which increases the difficulty of overall lightweighting, the complexity of the structure, and the de-icing effect needs to be improved. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a deicing device and a deicing method with a simple structure and good deicing effect.

[0005] The present invention provides a deicing device, comprising a mounting member, a vibration mechanism and a deicing mechanism. The vibration mechanism is arranged on the mounting member. One end of the deicing mechanism cooperates with the vibration mechanism, and the other end acts on the surface of the object to be deiced.

[0006] Furthermore, the vibration mechanism includes a power supply and a piezoelectric piece electrically connected to each other.

[0007] Furthermore, the deicing device further includes a driving member for adjusting the distance between the mounting member and the surface of the object to be deiced.

[0008] Furthermore, a channel is provided in the hollow interior of the mounting member, an opening communicating with the channel is provided on the mounting member, the opening acts on the surface of the object to be de-iced, the vibration mechanism is provided in the channel, and the vibration of the vibration mechanism causes a jet to be generated in the channel and ejected from the opening.

[0009] Furthermore, the deicing mechanism acts on the surface of the object to be deiced through the opening.

[0010] Furthermore, both ends of the channel are arranged toward the surface of the object to be de-iced, both ends of the mounting member are provided with the openings, and two groups of de-icing mechanisms are symmetrically arranged on both sides of the channel.

[0011] Furthermore, the channel includes a horizontal portion, an inclined portion and a vertical portion arranged at both ends of the horizontal portion, the vertical portion is connected to the horizontal portion through the inclined portion, the piezoelectric piece is vertically arranged in the middle of the horizontal portion, and the de-icing mechanism includes a horizontal rod, a connecting rod and a vertical rod hinged in sequence, the horizontal rod is horizontally slidably arranged in the horizontal portion, and the vertical rod is vertically slidably arranged in the vertical portion.

[0012] Furthermore, a sliding sleeve is provided in the vertical portion and the horizontal portion, the horizontal rod and the vertical rod are slidably connected to the sliding sleeve, and the sliding sleeve is connected to the inside of the channel through a connecting grid.

[0013] The present invention also provides a deicing method for a deicing device, which is characterized by comprising the following steps:

[0014] The vibration mechanism generates high-frequency vibrations, and gas flows into and out of the channel at high speed from the opening to form a jet, which prevents ice from being applied to the surface of the object to be de-iced and assists in de-icing.

[0015] The vibration mechanism drives the de-icing mechanism to vibrate and impact at high frequency, and the end of the de-icing mechanism acts on the surface of the ice layer and resonates with the ice layer to destroy the ice layer for de-icing.

[0016] The beneficial effect of the present invention is that the de-icing device provided by the present invention generates vibration impacts on the ice layer on the surface of the object through the de-icing mechanism, so as to destroy the ice layer structure and reduce the adhesion between the ice layer and the surface of the object to achieve the removal of the ice layer and realize the de-icing effect. The overall structure is simple and reliable. At the same time, it can greatly improve the ice layer destruction effect by generating high-frequency vibration impacts and resonating with the ice layer, realize low-power drive to destroy thick ice layers, easily meet lightweight requirements and strict de-icing requirements, and has great application prospects for wing de-icing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attachment Figure 1 It is a structural schematic diagram of the present invention;

[0018] Attachment Figure 2 A half-section view of the present invention;

[0019] Attachment Figure 3 This is a schematic diagram of the structure of the present invention after hiding the local installation parts;

[0020] Attachment Figure 4 It is a front cross-sectional view of the output end of the driving member of the present invention in an extended state;

[0021] Attachment Figure 5 for Figure 4 Middle AA section view;

[0022] Attachment Figure 6 It is a front cross-sectional view of the output end of the driving member of the present invention in the retracted state.

[0023] In the figure, 1-mounting part; 11-channel; 111-horizontal part; 112-inclined part; 113-vertical part; 114-sleeve; 115-connecting grille; 12-opening; 2-piezoelectric plate; 3-deicing mechanism; 31-horizontal rod; 32-connecting rod; 33-vertical rod; 4-driving part; 5-blade body; 51-through hole; 52-slide groove. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0025] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0027] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; it can mean mechanical connection, electrical connection, physical connection, or wireless communication connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] As attached Figure 1-6 As shown, the present invention provides a deicing device, including a mounting member 1, a vibration mechanism and a deicing mechanism 3. The vibration mechanism is arranged on the mounting member 1. One end of the deicing mechanism 3 cooperates with the vibration mechanism, and the other end acts on the surface of the object to be deiced.

[0030] The de-icing device provided by the present invention generates vibration impacts on the ice layer on the surface of the object through the de-icing mechanism 3, so as to destroy the ice layer structure and reduce the adhesion between the ice layer and the surface of the object to achieve the removal of the ice layer and realize the de-icing effect. The overall structure is simple and reliable. At the same time, it can greatly improve the ice layer destruction effect by generating high-frequency vibration impacts to resonate with the ice layer, realize low-power drive to destroy thick ice layers, easily meet lightweight requirements and strict de-icing requirements, and has great application prospects for wing surface de-icing.

[0031] In one embodiment, the vibration mechanism includes a power supply and a piezoelectric piece 2 electrically connected to each other. The piezoelectric piece 2 is arranged on the mounting part 1. The piezoelectric piece 2 is preferably a ceramic piezoelectric piece. The vibration amplitude and vibration frequency of the piezoelectric piece 2 can be quickly adjusted by controlling the size and frequency of the power supply, thereby facilitating the control of the de-icing mechanism 3 to resonate with the ice layer. The piezoelectric piece 2 is light in weight and small in size, which can easily meet the lightweight requirements. Its drive and control can be achieved by controlling the power supply, and the control is convenient and fast.

[0032] In one embodiment, the present invention further includes a driving member 4 for adjusting the distance between the mounting member 1 and the surface of the object to be de-iced. Specifically, the driving member 4 can be a cylinder, a hydraulic cylinder, or an electric push rod. The driving member 4 is fixed to the object, and its output end is connected to the mounting member 1. The distance between the de-icing mechanism 3 and the surface of the object is adjusted by adjusting the opening 12 at the output end and the distance between the de-icing mechanism 3 and the surface of the object, thereby adjusting the distance between the de-icing mechanism 3 and the ice layer. In this embodiment, the de-icing mechanism 3 can affect the shape and size of the jet hole, refer to Figure 4 When the vertical rod 33 is lower than the end face of the through hole 51, the end face of the through hole 51 (jet hole) is a circular hole type. Figure 5 When the vertical rod 33 is higher than the end face of the through hole 51, the end face of the through hole 51 (jet hole) is a circular ring, so the cross-sectional shape and cross-sectional area of the jet hole can be adjusted, and the jet impact force can be adjusted. In addition, by changing the shape of the end of the vertical rod 33, the shape and direction of the jet can also be changed.

[0033] The present invention also provides a blade, which can be shaped like a wing, a wind turbine blade, an aircraft blade, a rudder, or other objects with similar cross-sections, typically consisting of curved upper and lower surfaces and leading and trailing edges. Examples include wings and rudders on aircraft, wind turbine blades, propellers, and the like. The blade provided by the present invention includes a blade body 5 and a de-icing device as described above. The de-icing device is disposed within a cavity of the blade body 5. A through hole 51 is provided on the surface of the blade body 5, communicating with the opening 12. Through hole 51 communicates with opening 12, allowing the jet generated by the vibration mechanism and channel 11 to act on the blade surface through through hole 51. The de-icing mechanism 3 can act directly on the inner wall of the ice layer through opening 12 and through hole 51, or it can act on the blade skin. Furthermore, when the de-icing device is installed on a wing, multiple groups of them can be arranged in a rectangular array along the length and width of the wing to enhance anti-icing and de-icing effectiveness.

[0034] In one embodiment, a slide groove 52 is provided on the inner wall of the blade body 5, and the end of the mounting member 1 is slidably set in the slide groove 52, thereby facilitating the adjustment of the position of the de-icing device and the through hole 51. In this embodiment, when the vibration mechanism vibrates, the end of the de-icing mechanism 3 will extend into the surface of the opening 12.

[0035] In one embodiment, the mounting member 1 is hollow and has a channel 11 formed therein. An opening 12 is provided on the mounting member 1, communicating with the channel 11. The opening 12 acts on the surface of the object to be de-iced. The vibration mechanism is disposed within the channel 11. Vibration of the vibration mechanism generates a jet within the channel 11 that is ejected from the opening 12. Specifically, the piezoelectric plate 2 in the vibration mechanism is disposed within the channel 11 and blocks the channel 11, thereby forming a jet actuator to generate the jet. In this embodiment, the vibration mechanism vibrates in the channel 11 and can generate a jet at the opening 12. The jet acts on the surface of the object to be de-iced, changes the trajectory of the incoming dripping liquid on the surface of the object to be de-iced, increases the difficulty of ice forming on the surface of the object to be de-iced, and thus plays an anti-icing role. In addition, when de-icing, the jet can impact the destroyed ice layer, improve the separation effect of the ice layer and the surface of the object, and thus help improve the de-icing effect. At the same time, the vibration mechanism cooperates with the de-icing mechanism 3 to provide a vibration driving force for the de-icing mechanism 3. The de-icing mechanism 3 acts on the ice layer on the surface of the object through high-frequency vibration impact, and can also reduce the fit between the ice layer and the surface of the object to achieve de-icing of the ice layer.

[0036] In this embodiment, a vibration mechanism is used to achieve the dual functions of anti-icing and de-icing, ultimately improving the de-icing effect. At the same time, the structural size and complexity of the entire de-icing device can be guaranteed, which is convenient for meeting the lightweight requirements and the de-icing requirements on the wing surfaces of aircraft with high lightweight requirements.

[0037] Furthermore, in the present invention, opening 12 and de-icing mechanism 3 can act on the same location on the surface of an object. That is, de-icing mechanism 3 directly acts on the surface of the object through opening 12. In this case, if the surface of the object is already iced, de-icing mechanism 3 and the jet can work together to remove ice, thereby improving the de-icing effect. Furthermore, opening 12 and de-icing mechanism 3 can also act on different locations on the surface of the object. Preferably, opening 12 acts on the surface of the object requiring anti-icing, such as the leading edge of an airfoil, and de-icing mechanism 3 acts on the surface of the object requiring de-icing, such as the rear portion and / or trailing edge of the leading edge of an airfoil. This can meet various de-icing requirements.

[0038] In one of the preferred embodiments, the de-icing mechanism 3 acts on the surface of the object to be de-iced through the opening 12, that is, the end of the de-icing mechanism 3 is driven by the vibration mechanism to extend and retract from the opening 12 at a high frequency, and then the high-frequency vibration impact is applied to the inner side of the ice layer. In this way, the de-icing mechanism 3 can destroy the internal structure of the ice layer and reduce the structural strength of the ice layer, while reducing the fit between the inner wall of the ice layer and the surface of the object, and can also cause the ice layer to break and separate from the surface of the object after the ice layer is destroyed. Specifically, after the high-frequency vibration impact of the de-icing mechanism 3 destroys the ice layer structure, the frequency and amplitude of the vibration mechanism can be adjusted, that is, the vibration mechanism can be changed to a low-frequency and large-amplitude vibration, driving the de-icing mechanism 3 to push the destroyed ice layer, so that the destroyed ice layer is passively separated from the surface of the object; of course, the de-icing mechanism 3 can also be used only to destroy the ice layer structure, and the destroyed ice layer is actively separated from the surface of the object by the intensity of the airflow, or it can be combined with or other de-icing equipment to achieve the passive separation of the destroyed ice layer from the surface of the object.

[0039] In one embodiment, both ends of the channel 11 are arranged toward the surface of the object to be de-iced, both ends of the mounting member 1 are provided with the opening 12, and two groups of the de-icing mechanism 3 are symmetrically arranged on both sides of the channel 11. This embodiment provides two implementation methods. In method one, the channel 11 is a straight cylindrical structure, and the two ends of the channel 11 are located on the two sides of the wing surface. In method two, the two ends of the channel 11 are bent, that is, the mounting member 1 and the channel 11 are U-shaped as a whole, and the two ends of the channel 11 are located on the same side of the wing surface. Since the size of the present de-icing device can be made very small, it is preferred to adopt method two as an implementation method. Method one is suitable for use in situations where the object is very thin and there is a need for de-icing on both sides of the object, such as the object is the tip of the wing surface.

[0040] When the above two methods are adopted, the vibrations on both sides of the piezoelectric piece 2 can form jets, and the vibrations in both directions of the piezoelectric piece 2 can cooperate with the de-icing mechanism 3 to prevent ice, greatly improving the utilization rate of the piezoelectric piece 2.

[0041] In addition, since the amplitude and frequency of the piezoelectric piece 2 in two directions can be relatively independent, a de-icing device can provide two jets with different parameters and two de-icing vibrations with different parameters. Then, according to the temperature of the surface of the object and the icing characteristics, the arrangement position of the de-icing device can be adjusted to achieve de-icing and anti-icing of different intensities at different locations. For example, when the de-icing device is arranged on the wing surface, since the leading edge of the wing surface will first contact the low-temperature air, the thickness of the ice will also be thicker. In this embodiment, one end of the channel 11 is arranged on the leading edge side of the wing surface, and the other end is arranged on the leading edge side of the wing surface. The end is arranged on the rear side of the leading edge of the wing. At this time, the amplitude of the vibration of the piezoelectric piece 2 toward the side of the leading edge of the wing of the channel 11 is controlled to be large and the frequency is high, so that a relatively large jet and vibration are blown to the leading edge of the wing. The amplitude of the vibration of the piezoelectric piece 2 toward the other side of the channel 11 is controlled to be relatively small and the frequency is relatively low, so as to blow a relatively small jet and vibration to the rear part of the leading edge of the wing. At this time, because the jet at the leading edge of the wing affects the path of the incoming droplets, the jet located at the rear opening 12 only needs to assist in changing the path of the bypass flow, which can ensure the best de-icing effect under the premise of avoiding energy waste.

[0042] When the two ends of the channel 11 are bent, the channel 11 includes a horizontal part 111, an inclined part 112 and a vertical part 113 arranged at both ends of the horizontal part 111, and the vertical part 113 is connected to the horizontal part 111 through the inclined part 112. The piezoelectric piece 2 is vertically arranged in the middle of the horizontal part 111. In this embodiment, the de-icing mechanism 3 includes a horizontal rod 31, a connecting rod 32 and a vertical rod 33 hinged in sequence. The horizontal rod 31 is horizontally slidably arranged in the horizontal part 111, and the vertical rod 33 is vertically slidably arranged in the vertical part 113. In the process of the piezoelectric piece 2 driving the horizontal rod 31 to move back and forth left and right, the horizontal rod 31 drives the vertical rod 33 to move back and forth up and down through the connection of the connecting rod 32, thereby causing the vertical rod 33 to generate high-frequency vibration on the ice layer. In addition, the horizontal rod 31, the connecting rod 32 and the vertical rod 33 are hinged in pairs, and the hinge method is not limited to the conventional hinge connection, but can also be a flexible connection of the material to cope with high-frequency vibration.

[0043] In this embodiment, a sliding sleeve 114 is provided in the vertical portion 113 and the horizontal portion 111. The vertical rod 33 slides with the sliding sleeve 114 provided in the vertical portion 113, and the horizontal portion 111 slides with the sliding sleeve 114 provided in the horizontal portion 111. The sliding sleeve 114 is connected to the interior of the channel 11 through a connecting grid 115. The connecting grid 115 has a through hole, which ensures the sliding fit of the horizontal rod 31 and the vertical rod 33 without affecting the formation and circulation of the jet.

[0044] The present invention also provides a deicing method using a deicing device, which is characterized by comprising the following steps:

[0045] The vibration mechanism generates high-frequency vibrations, and the gas flows out of the channel 11 and forms a jet from the opening 12 to prevent ice from forming and assist in deicing the surface of the object to be deiced.

[0046] The vibration mechanism drives the de-icing mechanism 3 to vibrate and impact at a high frequency, and the end of the de-icing mechanism 3 acts on the surface of the ice layer and resonates with the ice layer to destroy the ice layer and de-ice.

[0047] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A deicing device, characterized in that: It comprises a mounting member (1), a vibration mechanism and a deicing mechanism (3), wherein the vibration mechanism is arranged on the mounting member (1), one end of the deicing mechanism (3) cooperates with the vibration mechanism, and the other end acts on the surface of the object to be deiced; The vibration mechanism includes a power supply and a piezoelectric piece (2) electrically connected to each other; It also includes a driving member (4) for adjusting the distance between the mounting member (1) and the surface of the object to be de-iced; The mounting member (1) is hollow inside and is provided with a channel (11). The mounting member (1) is provided with an opening (12) communicating with the channel (11). The opening (12) acts on the surface of the object to be de-iced. The vibration mechanism is arranged in the channel (11). The vibration mechanism vibrates to generate a jet in the channel (11) that is ejected from the opening (12).

2. The deicing device according to claim 1, wherein: The deicing mechanism (3) acts on the surface of the object to be deiced through the opening (12).

3. The deicing device according to claim 2, wherein: Both ends of the channel (11) are arranged toward the surface of the object to be de-iced, both ends of the mounting member (1) are provided with the openings (12), and two groups of the de-icing mechanisms (3) are symmetrically arranged on both sides of the channel (11).

4. The deicing device according to claim 3, wherein: The channel (11) comprises a horizontal portion (111), an inclined portion (112) and a vertical portion (113) arranged at both ends of the horizontal portion (111); the vertical portion (113) is connected to the horizontal portion (111) via the inclined portion (112); the piezoelectric sheet (2) is vertically arranged in the middle of the horizontal portion (111); the deicing mechanism (3) comprises a horizontal rod (31), a connecting rod (32) and a vertical rod (33) hinged in sequence; the horizontal rod (31) is horizontally slidably arranged in the horizontal portion (111); and the vertical rod (33) is vertically slidably arranged in the vertical portion (113).

5. The deicing device according to claim 4, wherein: Sliding sleeves (114) are provided in the vertical portion (113) and the horizontal portion (111); the horizontal rod (31) and the vertical rod (33) are slidably connected to the sliding sleeves (114); and the sliding sleeves (114) are connected to the interior of the channel (11) via a connecting grid (115).

6. A deicing method using the deicing device according to claim 1, characterized in that: The steps include: The vibration mechanism generates high-frequency vibrations when in operation, and gas flows out of the passage (11) and forms a jet from the opening (12), thereby performing anti-icing and auxiliary deicing on the surface of the object to be deiced; The vibration mechanism drives the de-icing mechanism (3) to vibrate and impact at a high frequency, and the end of the de-icing mechanism (3) acts on the surface of the ice layer and resonates with the ice layer to destroy the ice layer and de-ice.

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