Mica plate encapsulated resistance wire heating core structure

Abstract

This invention relates to a mica-encapsulated resistance wire heating core structure, which is used to connect to an external power source. It includes a nickel-chromium metal resistance wire heating element, a temperature-resistant and flame-retardant mica composite material layer, and an outer metal shell. The nickel-chromium metal resistance wire heating element is disposed on the temperature-resistant and flame-retardant mica composite material layer. The outer metal shell integrally houses the temperature-resistant and flame-retardant mica composite material layer with the nickel-chromium metal resistance wire heating element. The nickel-chromium metal resistance wire heating element is electrically connected to the external power source. The heat generated by the power supply is quickly and evenly conducted to the outer metal shell through the temperature-resistant and flame-retardant mica composite material layer, which can provide uniform heating over a large area and block the leakage path of the nickel-chromium metal resistance wire heating element, thereby achieving excellent structural stability and functionality.

Claims

1. A mica-encapsulated resistance wire heating core structure, used for connecting to an external power supply, comprising: A nickel-chromium metal resistance wire heating element, wherein the nickel-chromium metal resistance wire heating system is composed of nickel-chromium alloy resistance wire, the nickel-chromium metal resistance wire heating system is provided with an equally spaced wound resistance wire and several metal electrodes, the equally spaced wound resistance wire is provided with at least one first connection end and at least one second connection end, and the several metal electrodes are respectively covered with an insulating sheath, the metal electrodes are electrically connected to the first connection end and the second connection end provided by the equally spaced wound resistance wire, and the metal electrodes are electrically connected to the external power supply; A heat-resistant and flame-retardant mica composite material layer, wherein the heat-resistant and flame-retardant mica composite material layer is composed of a high-temperature resistant and thermally conductive composite material, wherein the equally spaced winding resistance wire and metal electrodes of the nickel-chromium metal resistance wire heating element are disposed on the heat-resistant and flame-retardant mica composite material layer; and an outer metal shell, wherein the outer metal shell has a shell surface and an inner space, wherein the heat-resistant and flame-retardant mica composite material layer with the nickel-chromium metal resistance wire heating element is disposed in a state of covering and containing the shell surface and the inner space, and the metal electrodes of the nickel-chromium metal resistance wire heating element extend out of the outer metal shell.

2. The mica plate encapsulated resistance wire heating core structure as described in claim 1, wherein, The nickel-chromium metal resistance wire heating element has equally spaced winding resistance wires wound in a serpentine or spiral shape.

3. The mica plate encapsulated resistance wire heating core structure as described in claim 1 or 2, wherein, The heat-resistant and flame-retardant mica composite material layer integrates the nickel-chromium metal resistance wire heating element with a high-temperature hot-pressing method.

4. The mica plate encapsulated resistance wire heating core structure as described in claim 3, wherein, The device further includes an edge sealant, which is located at the edge gap of the outer metal shell that is positioned above and below.

5. The mica plate encapsulated resistance wire heating core structure as described in claim 4, wherein, The outer metal shell has a voltage resistance of ≥2.5kV, while the temperature-resistant and flame-retardant mica composite material layer has a temperature resistance of ≥1000℃, and the temperature difference between the nickel-chromium metal resistance wire heating element and the outer metal shell is ≥1℃.

6. The mica plate encapsulated resistance wire heating core structure as described in claim 5, wherein, The heat-resistant and flame-retardant mica composite material layer is provided with several buckles. When the equally spaced winding resistance wires of the nickel-chromium metal resistance wire heating element are laid on the heat-resistant and flame-retardant mica composite material layer, the equally spaced winding resistance wires are fixed by the several buckles.

7. The mica plate encapsulated resistance wire heating core structure as described in claim 6, wherein, The outer metal shell system is made of aluminum or aluminum alloy.

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