Microwave heating control transformer

Abstract

The utility model discloses a microwave heating control transformer relates to food processing equipment technical field. By I type and E type silicon steel sheet, multiple groups of coils, terminal post, framework etc. spare part composition, have 3 groups of coils, and primary coil (4 1) and secondary coil (4 3) are respectively wound on the insulation coil spacer (3), and then are sleeved into the middle cylinder of E type silicon steel sheet, and still have the insulation baffle (2) between the two coil spacers, and each has a degaussing ring (1) between the contact surface between the two outer cylinder of E type silicon steel sheet and I type silicon steel sheet. The utility model discloses a microwave heating control transformer, can realize the detachable of microwave control transformer and reassembly, can replace to the damaged component, realizes the purpose of recycling and cost reduction and benefit increase, and can through recycling I, E silicon steel sheet and undamaged coil, reduce unnecessary waste, reduce production cost and improve environmental protection performance.

Description

Technical Field

[0001] This utility model relates to the field of food processing equipment technology, and in particular to a microwave heating control transformer. Background Technology

[0002] In the production of high-end food-grade zinc-enriched rapeseed oil, one important step is to roast the raw material, rapeseed, using microwave heating equipment on an assembly line to enhance its aroma. The advantages of this method are uniform heating and cooking. The microwave heating equipment typically used is a direct-feed type, and its control transformer is the core component. The original control transformer is assembled from two silicon steel sheets (I-side and E-side), one primary winding input coil, and two secondary winding output coils. The winding coils are insulated with insulating paper and fitted onto the inner surface of the E-side silicon steel sheet, and then assembled with other components. After assembly, the transformer is welded and fixed, i.e., the I-side silicon steel sheet and the E-side are welded and fixed. Some terminals are hidden inside the coils, and the entire assembly is welded together as a single unit.

[0003] This control transformer experiences significant vibration, overheating, and noise during operation, and its winding coils are easily burned out. Because the transformer is welded as a single unit, any damage to its winding coils or other components necessitates replacement of the entire unit. In other words, this control transformer is designed for single-use only. Summary of the Invention

[0004] The purpose of this invention is to provide a novel control transformer for microwave heating, which aims to enable the microwave control transformer to be disassembled and reassembled, allowing for the replacement of damaged parts, achieving recycling and cost reduction and efficiency improvement; and by recycling I-type silicon steel sheets, E-type silicon steel sheets and undamaged coils, unnecessary waste can be reduced, production costs can be lowered and environmental performance can be improved.

[0005] The technical solution of this utility model is implemented as follows: A microwave heating control transformer is composed of type I and type E silicon steel sheets, multiple sets of coils, terminals, and frame components. There are a total of 3 sets of coils. The primary coil (4-1) and the secondary coil (4-3) are wound on the insulating coil spacer (3) respectively, and then fitted into the middle column of the type E silicon steel sheet (8-1). An insulating baffle (2) is also installed outside the two coil spacers. A demagnetizing ring (1) is installed between the two outer columns of the type E silicon steel sheet and the contact surface of the type I silicon steel sheet (8-2). The insulating coil spacer (3) is made of insulating material and is shaped as a hollow rectangular column (3-1). A hollow rectangular planar partition (3-2) is connected to the upper and lower edges of the column. The size of the rectangular hollow hole inside the planar partition is the same as the size of the hollow hole in the rectangular column. The insulating baffle (2) is made of insulating material and is a hollow rectangular planar body. The size of the hollow hole (2-1) is the same as the cross-sectional area of ​​the middle column of the E-type silicon steel sheet. It is installed on the middle column of the E-type silicon steel sheet and presses down on the coil. The demagnetizing ring (1) is made of insulating material. Conductivity Made of materials, it is shaped like a rectangular ring with two demagnetizing rings. The first demagnetizing ring (1-1) and the second demagnetizing ring (1-2) are respectively fitted onto the two outer pillars of the E-type silicon steel sheet, and an I-type silicon steel sheet is installed on top. The primary coil (4-2) is also installed between the primary coil (4-1) and the secondary coil (4-3). The coil is fixed in place by two insulating coil spacers from above and below.

[0006] Beneficial Effects: Compared with the original transformer, the microwave heating control transformer provided by this utility model is detachable and reassembleable. During use, if a coil or component of the transformer is damaged, any damaged winding coil or other damaged component can be replaced, thereby achieving the purpose of repairable and reusable transformer. Simultaneously, the demagnetizing rings installed on the upper part of the two outer columns of the E-type silicon steel sheet can eliminate noise, reduce vibration, and lower heat generation, thus lowering the coil temperature. The use of insulating plates and insulating coil spacers instead of insulating paper enhances insulation effect and wear resistance, achieving the goals of extending transformer service life, energy saving, and recycling. The microwave heating control transformer of this application has significantly reduced noise, vibration, and heat generation, and its service life can be extended by 3-5 times. Attached Figure Description

[0007] Figure 1 3D diagram of a microwave heating control transformer; Figure 2 Main structure diagram of microwave heating control transformer; Figure 3 Top view of the microwave heating control transformer; Figure 4 : 3D diagram of the insulating coil spacer; Figure 5 Schematic diagram of demagnetizing ring; Figure 6 Schematic diagram of insulating baffle; Figure 7 Installation diagram of microwave heating control transformer.

[0008] In the diagram: 1—Demagnetizing ring, 1-1—First demagnetizing ring 1, 1-2—Second demagnetizing ring, 2—Insulating baffle, 3—Insulating coil spacer, 3-1—Hollow rectangular column on the insulating coil spacer, 3-2—Rectangular planar spacer on the insulating coil spacer, 4-1—Primary coil, 4-2—First primary coil, 4-3—Secondary primary coil, 5—Terminal, 6-1—First primary coil terminal, 6-2—Secondary primary coil terminal, 7-1—Fasting screw, 8—Silicon steel sheet, 8-1—Type E silicon steel sheet, 8-2—Type I silicon steel sheet, 9-1—Upper part of the frame, 9-2—Lower part of the frame. Detailed Implementation

[0009] The technical solution and advantages of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0010] Example 1: As Figure 1 , Figure 2 As shown, the microwave heating control transformer is mainly composed of components such as a demagnetizing ring (1), an insulating baffle (2), an insulating coil sleeve (3), a coil, and a silicon steel sheet core.

[0011] Example: The method involves modifying and replacing the control transformer of the existing microwave heating equipment.

[0012] Production process: 1. Fabrication of Insulating Baffle 2: Several rectangular plate components with inner holes (rectangular inner holes) are to be fabricated from 3mm thick electrical insulating epoxy board. Note: The rectangular inner hole dimensions must match the outer diameter of the insulating coil spacer 3, allowing it to fit snugly inside, with a gap of less than 1mm. The length and width dimensions of the rectangular insulating baffle 2 must match or exceed the outer dimensions of the primary coil (4-1), first-stage coil (4-2), and second-stage coil (4-3) by 3-5mm, but must allow the coils to be easily inserted into the center of the E-type silicon steel sheet and easily fitted into the center of the E-type silicon steel sheet with insulating coil spacer 3. 2. Fabrication of Insulating Coil Spacer 3: Use four 3mm thick electrical insulation epoxy boards to fabricate multiple cuboid components for later use. The inner length and width of the cuboid should be equivalent to the inner dimensions of the middle of the E-type silicon steel sheet, and should be able to easily fit into the inner surface of the E-type silicon steel sheet, with a gap of less than 1mm. The outer length and width of the cuboid should be equivalent to the inner diameter of the coil, and should be able to allow the coil to fit easily, with a gap of less than 1mm. Its height should be consistent with the height of the middle inner surface of the E-type silicon steel sheet, so as not to affect the smooth covering / closing of the transformer's I-type silicon steel sheet and E-type silicon steel sheet.

[0013] 3. Making demagnetizing ring 1: Use solid copper wire with a diameter of 3-4mm to make two rectangles and weld the joints firmly with copper solder. The length is equivalent to the width of the upper outer side of the E side of the silicon steel sheet, and the width is equivalent to the width of the groove cut on the upper outer side of the E side of the silicon steel sheet. The actual width is generally 8-10mm.

[0014] 4. Grooving the contact surface between silicon steel sheet E and silicon steel sheet I: Circular grooves with a diameter of 3-4mm are cut on the upper part of the outer sides of the contact surface between silicon steel sheet E and silicon steel sheet I (two on each side, four in total); the width between the two circular grooves on each side is about 8-10mm, and the length, width and diameter of the circular grooves are equivalent to the size of the demagnetizing ring 1.

[0015] Installation: See attached. Figure 7 Technical modifications will be made to the control transformer of existing microwave heating equipment. First, use an angle grinder to grind open the contact surfaces between the two outer pillars of the original transformer welded to the E-type silicon steel sheet and the I-type silicon steel sheet. Remove the I-type silicon steel sheet. From the pillar in the middle of the E-type silicon steel sheet, remove the original coil and the insulating paper on the coil in sequence, and mark the removed coils for easy reassembly later. Next, cut circular grooves for the demagnetizing ring 1 into the two outer pillars of the E-type silicon steel sheet according to the dimensions of the demagnetizing ring 1. Assemble the insulating coil spacer 3, the hollow rectangular pillar 3-1 on the insulating coil spacer, and the rectangular flat partition 3-2 on the insulating coil spacer. Figure 4 .

[0016] Then assemble into Figure 4 The primary coil 4-1, secondary coil 4-2, and primary coil 4-3 are installed on the component. After fabrication, they are soaked in high-quality insulating varnish and dried. Then, the dried insulating varnish-coated primary coil 4-1, primary coil 4-3, and secondary coil 4-2 are fitted onto the column in the middle of the E-type silicon steel sheet. After the three sets of coils are installed, the wire ends of each coil are pulled out and correctly connected to the corresponding primary coil terminal 6-1 and secondary coil terminal 6-2. Finally, the main terminal is connected.

[0017] After connecting the wires, install the demagnetizing ring 1 in the slot. Correctly cover the E-type silicon steel sheet of the transformer with the I-type silicon steel sheet. After confirming that all installations are correct, use the pre-made right-angle special clamp or the upper part 9-1 and lower part 9-2 of the frame to fix the I-type silicon steel sheet and the E-type silicon steel sheet firmly with bolts. The installation is then complete. After that, apply a layer of high-quality insulating varnish to all coils. After the insulating varnish dries, it can be tested and installed for use.

[0018] Testing: The microwave heating control transformer of this application, after being coated with high-quality insulating varnish and dried, underwent input and output testing. Once the input and output met the design standards, it could be installed on microwave equipment for use; this was followed up through actual production application.

[0019] Compared with the original transformer, this application significantly reduces noise, vibration and heat generation, and can extend the service life by 3 to 5 times.

[0020] If a coil or component of the transformer is damaged during use, the right-angle special clamp or the upper part 9-1 and the lower part 9-2 of the frame can be opened for targeted replacement, thereby achieving the purpose of repairing and recycling the transformer.

Claims

1. A microwave heating control transformer, comprising type I silicon steel sheets and type E silicon steel sheets, multiple sets of coils, terminals, and frame components, characterized in that: The control transformer has three sets of coils. The primary coil (4-1) and the secondary coil (4-3) are wound on the insulating coil spacers (3) and then fitted onto the middle column of the E-type silicon steel sheet (8-1). An insulating baffle (2) is installed outside the two coil spacers. A demagnetizing ring (1) is installed between the two outer columns of the E-type silicon steel sheet and the contact surface of the I-type silicon steel sheet (8-2).

2. The microwave heating control transformer according to claim 1, characterized in that: The insulating coil spacer (3) is made of insulating material and is shaped as a hollow rectangular column (3-1). A hollow rectangular flat partition (3-2) is connected to the upper and lower edges of the column. The size of the rectangular hollow hole inside the rectangular flat partition (3-2) is the same as the size of the hollow hole in the rectangular column (3-1).

3. The microwave heating control transformer according to claim 1, characterized in that: The insulating baffle (2) is made of insulating material and is shaped as a hollow rectangular plane. The size of the hollow hole (2-1) is the same as the cross-sectional area of ​​the middle column of the E-type silicon steel sheet. During installation, it is fitted onto the middle column of the E-type silicon steel sheet and presses down the primary coil (4-1) and the secondary coil (4-3).

4. The microwave heating control transformer according to claim 1, characterized in that: The demagnetizing ring (1) is made of conductive material and is shaped as a rectangular ring. There are two demagnetizing rings. The first demagnetizing ring (1-1) and the second demagnetizing ring (1-2) are respectively fitted onto the two outer pillars of the E-type silicon steel sheet, and an I-type silicon steel sheet is installed on top.

5. The microwave heating control transformer according to claim 1, characterized in that: A primary coil (4-2) is installed between the primary coil (4-1) and the secondary coil (4-3). The upper and lower insulating coil spacers (3) press and fix the primary coil (4-2) from above and below.

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