A microwave oven transformer high-voltage secondary isolation insulation system structure

Abstract

An invention of a high-voltage secondary isolation insulation system structure for a microwave oven transformer. The specific material structure is shown in Figure 1. (1) Silicon steel sheet core; (2) Semi-finished secondary winding; The semi-finished high-voltage secondary winding of the microwave oven transformer includes (2-1) a picture of the secondary winding insulation package and (2-2) a cross-sectional view of the secondary winding. The new high-voltage secondary winding of the microwave oven transformer is composed of an external composite insulation material that is resistant to high temperature, high voltage and heat, and an internal high-voltage secondary coil of the microwave oven transformer. (3) Insulation sheet between the secondary winding and the filament winding; The insulation sheet uses the same composite insulation material that is resistant to high temperature, high voltage and heat as the external high-voltage secondary coil of the microwave oven transformer. After being combined with the high-voltage secondary winding of the microwave oven transformer, it can form a complete closed insulation isolation space, which better protects the high-voltage secondary coil of the microwave oven transformer. (4) Filament wire winding; (5) Leaking magnetic sheet; (6) Primary winding; (7) Microwave oven transformer assembly; The invention of the new microwave oven transformer high-voltage secondary isolation insulation system structure is explained in detail through illustrated decomposition, and the modular production of microwave oven transformers is promoted by using new standardized materials, thereby reducing the production cost of microwave oven transformers.

Description

Technical Field

[0001] This invention is mainly used for optimizing and improving the structure of the high-voltage secondary isolation insulation system of microwave oven transformers. Background Technology

[0002] In traditional microwave oven transformer high-voltage secondary insulation systems, the high-voltage secondary coil was protected by a combination of insulating paper and mica sheets for temperature resistance and insulation. The new invention optimizes this by using a new composite material with higher temperature and voltage resistance, eliminating the need for the mica sheet. This increases the space between the high-voltage secondary coil and the silicon steel core, resulting in better protection for the high-voltage secondary coil and optimizing the modular production of microwave oven transformers. Summary of the Invention

[0003] This invention patent optimizes and improves the structure of the high-voltage secondary insulation system of a microwave oven transformer, reducing the amount of material used in the high-voltage secondary coil and the amount of manual processes, increasing the space of the secondary coil, and protecting the secondary coil. While increasing the space of the secondary coil, it also forms an air duct between the secondary coil and the insulation layer, better reducing the internal temperature of the secondary coil and thus protecting it.

[0004] Figure 1 This is a structural diagram of the present invention.

[0005] The technical solution for the improved structure of the high-voltage secondary isolation insulation system of a microwave oven transformer, as described in this invention patent, is as follows:

[0006] 1. Replace and optimize the existing insulation materials and mica boards with new composite high-temperature and high-voltage resistant thermal insulation materials. Removing the mica boards increases the space in the high-voltage secondary coil of the microwave oven transformer, allowing for better conduction and heat dissipation. This reduces mechanical stress caused by the confined space in the high-voltage secondary coil and prevents damage to the transformer's high-voltage secondary coil due to poor heat dissipation.

[0007] 2. Add insulating sheets to the high-voltage secondary coil and filament coil of the modular microwave oven transformer to form a closed insulating space outside the high-voltage secondary coil of the microwave oven transformer. The new insulating material can isolate the conduction of high temperature, and the space inside the insulation layer of the high-voltage secondary coil of the microwave oven transformer can also be increased to form an air duct to quickly conduct the temperature outward.

[0008] 3. The new high-voltage secondary isolation insulation system structure of microwave oven transformers can also simplify the production process, eliminating the need for operators in the original mica board wrapping process, and reducing the excessive reliance on manual operation in the production of microwave oven transformers.

[0009] Producing technical effects

[0010] The present invention primarily optimizes the existing high-voltage secondary insulation system of microwave oven transformers, redesigning it with new insulation materials to form a complete closed-loop protection around the high-voltage secondary coil. The new insulation material's high-temperature resistance, high-voltage resistance, and heat insulation properties better protect the high-voltage secondary coil. Simultaneously, it reduces the number of operators in the microwave oven transformer production process, promotes modular production, and lowers production costs.

Claims

1. An invention of a high-voltage secondary isolation insulation system structure for a microwave oven transformer, comprising (2) a secondary winding semi-finished product, (2-1) a picture of the secondary winding insulation, (2-2) a cross-sectional view of the secondary winding, and (3) an isolation insulation sheet between the secondary winding and the filament winding.

2. The high-voltage secondary insulation system structure of microwave ovens mainly improves the insulation system of the traditional microwave oven secondary high-voltage coil by isolating and improving it. At the same time, it promotes modular improvement in the microwave oven transformer production process, thereby redefining the standardization of the microwave oven transformer production process.

3. The insulation systems of the high-voltage secondary coils of existing microwave oven transformers have been in use for many years without any improvement.

4. In the past, the insulation system of the high-voltage secondary coil of microwave oven transformers squeezed the enameled wire coil to its limit in the narrow space of the silicon steel core window. As a result, the coil was squeezed together by mechanical stress in the limited space, which increased the possibility of short circuit between the enameled wire turns inside the coil after energization.

5. In the past, the insulation of the high-voltage secondary coil of microwave oven transformers mainly used mica plates to wrap around the upper, outer and lower sides of the coil, and the insulation and filling of the mica material were used to achieve the insulation and protection of the coil.

6. Mica sheets are made by pressing mica fragments, and their interior is composed of many tiny, plate-like crystalline particles. These individual, unconnected plate-like crystals result in relatively poor ductility and shapeability of the mica sheet material.

7. Because the mica sheet covers three sides, the inner side of the microwave oven's high-voltage secondary coil is only insulated by a layer of insulating paper and a silicon steel sheet. Within this limited space, due to size variations during production, some high-voltage coils may be larger than normal, causing damage to the microwave oven's high-voltage secondary coil. This damage ultimately leads to failure of the microwave oven's high-voltage secondary coil and, consequently, the microwave oven transformer.

8. The close contact between the microwave oven's high-voltage secondary coil and the silicon steel core means that the high temperature generated by the microwave oven transformer after it is powered on will also be conducted to the microwave oven's high-voltage secondary coil, thereby accelerating the aging inside the microwave oven's high-voltage secondary coil and increasing the risk of damage to the microwave oven's high-voltage secondary coil.

9. The invention of the new microwave oven transformer high-voltage secondary isolation insulation system structure is to upgrade the existing microwave oven high-voltage secondary insulation system and optimize the mica plate originally used for isolation in the insulation layer and microwave oven high-voltage secondary coil.

10. After optimization, the mica plate is replaced with a new composite insulating protective layer. The replacement of the mica plate with a new composite insulating material that is resistant to high temperature and high pressure and heat insulation increases the space of the existing microwave oven high-voltage secondary coil. The composite insulating material that is resistant to high temperature and high pressure can also block the conduction of high temperature from the silicon steel core.

11. Increasing the space in the high-voltage secondary coil of the microwave oven transformer allows for better design margins within the limited space, thereby reducing damage caused by mechanical stress. Increasing the gap between the high-voltage secondary coil and the silicon steel core creates an air duct, accelerating the transfer of internal temperature to the outside of the microwave oven transformer. This lowers the temperature of the high-voltage secondary coil and provides heat dissipation protection for the microwave oven transformer.

12. By eliminating the mica plate, the production process of the microwave oven high-voltage secondary coil can be streamlined. The number of operators in the original process of wrapping the microwave oven high-voltage secondary coil with mica plate can be reduced, and the production cost of microwave oven transformers can be directly saved.

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