MULTILAYER FLEXIBLE-FLAT ELECTRIC HEATER Russian patent published in 2023 - IPC H05B3/34 H05B3/36 

FIELD: space engineering.

SUBSTANCE: invention can be used in the manufacture of flexible, flat, flexible-flat electric heaters (EH) that maintain in working condition (in a given range of operating temperatures) radio-electronic equipment and components of a spacecraft (SC) when exposed to low temperatures in outer space by heating the electronic equipment (assemblies), that is, heated objects (HO), to the values of operating temperatures by turning on the EH for a specified time. The technical result is an increase in the efficiency and reliability of the EH for the conditions of regular operation as part of a spacecraft of sealed and non-pressurized design (in open space conditions), an increase in the reliability of the thermal control system (TCS) in the presence of EH kits that provide additional functional redundancy. The technical result is achieved by the fact that in a multilayer flexible-flat EH containing a resistive element located between two sheets of electrically insulating material and equipped with current-carrying wires, a second layer of EH is pressed to a sheet of electrically insulating material, containing a resistive element located between two sheets of electrically insulating material and equipped with current-carrying wires. The second EP layer provides double redundancy of the main structural elements in one EH. In case of failure of the first EH (open circuit, short circuit of the resistive layer, breakage of current-carrying wires, failure of soldered connections), the control command removes the supply voltage from the first layer of the EH and supplies the supply voltage to the second layer of the EH, ensuring the performance of the EH function.

EFFECT: increase in the efficiency and reliability.

2 cl, 1 dwg