Directional electric heating and heat conducting device and preparation method thereof

Abstract

The invention relates to a directional electric heating and heat conducting device and a preparation method thereof, the directional electric heating and heat conducting device is used for deicing wings or slats of airplanes, and the directional electric heating and heat conducting device sequentially comprises a protective layer, a heat conducting layer, a first insulating layer, a heating layer, a second insulating layer, a heat insulating layer, a third insulating layer and a base body layer from outside to inside; the directional electric heating heat conduction device further comprises a wire used for being connected with an external power source; and the wire is in contact with the heating layer, is led out from the heating layer, penetrates through the second insulating layer and the heat insulating layer, extends out of the device and is reserved for a certain length. By the adoption of the device, low-energy-consumption electric heating deicing can be achieved, the high-temperature protection effect on the base body is achieved, and finally the energy efficiency of the airplane can be improved.

Description

technical field [0001] The invention relates to a directional thermal conduction electric heating device and a preparation method, which belong to the field of aerospace anti-icing. Background technique [0002] In the prior art, during normal flight, the leading edge of the wing and the surface of the slat will freeze due to the collision of supercooled liquid droplets at low temperature. After the aircraft freezes, not only the flight weight will increase, but also the aerodynamic shape will be destroyed, which will reduce the lift of the aircraft, and reduce the handling and stability, which will bring irreparable consequences to the flight of the aircraft. To solve the problem of icing, advanced models such as the B787 use metal electric heating to prevent and de-ice the leading edge of the aircraft's wings. B787 adopts GKN's metal thermal spraying technology to use the metal coating as the heating element, but the cost of this technology is too high, and the spraying p...

AI Technical Summary

Problems solved by technology

However, the anti-icing device is bonded together as the outer edge body and the base structure through structural glue, and resistance wire is selected as the heating layer, and this heating method is likely to cause uneven distribution of heating temperature, and the bending point of the resistance wire is easy to be damaged. The insulation layer is made of carbon fiber and epoxy materials, which is prone to thermal aging damage and has a general heat insulation effect

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