Transformer for high-efficiency microwave oven

Abstract

The utility model relates to the field of microwave oven transformers, and discloses a transformer for a high-efficiency microwave oven, which comprises a silicon steel sheet, and a high-voltage lead, a secondary coil and a primary coil which are positioned on the silicon steel sheet, a mounting plate is arranged at the bottom of the silicon steel sheet, and the secondary coil and the primary coil are respectively connected with a secondary terminal and a primary terminal. The secondary coil is an aluminum wire or a copper wire or a copper-clad aluminum wire, the primary coil is an aluminum wire or a copper wire or a copper-clad aluminum wire, the high-voltage wire is a copper wire or a copper-clad aluminum wire, the section of the primary coil is round, oval or square with round corners, and an insulating iron sheet is arranged between the high-voltage wire and the primary coil. The secondary coil and the primary coil adopt the copper-clad aluminum wires, the energy consumption requirement is met, the copper-clad aluminum wires are low in cost and light in transportation weight, and the transportation cost can be reduced; the extremely unstable voltage generated by jumping of the voltage of the primary coil between 210V and 230V can be prevented from being transmitted to the high-voltage wire above the patch, and mutual influence is avoided.

Description

Technical Field

[0001] The utility model relates to the field of microwave oven transformers, and particularly to a high-efficiency transformer for microwave ovens. Background Technique

[0002] Previously, copper wires were used for the primary coil and the secondary coil in the microwave oven transformer, resulting in a high cost. Although using copper-clad aluminum wires for the high-voltage wires can reduce the cost to some extent, the overall usage amount of the primary coil and the secondary coil is large, still resulting in a relatively high cost, and it cannot be freely selected according to the usage conditions of the location where the microwave oven is located.

[0003] In the document ZL201520889030U, a transformer for a microwave oven is disclosed, which includes an E-shaped steel sheet, a primary coil, a secondary coil, a filament coil, and an I-shaped steel sheet fixed to the bottom of the E-shaped steel sheet. The secondary coil, the filament coil, and the primary coil are wound on the E-shaped steel sheet from top to bottom in sequence. The cross-section of the lamp wire in the filament coil is quadrilateral, a magnetic leakage steel sheet is provided between the filament coil and the primary coil, and an insulator is provided outside the filament coil. This kind of transformer has a high usage cost, cannot be selected according to the situation of the location where the microwave oven is located, and has a low adaptability.

[0004] Therefore, a new technical solution is needed to solve the above technical problems. Summary of the Invention

[0005] In order to solve the above problems, the utility model discloses a high-efficiency transformer for a microwave oven, which can be combined by comprehensively considering aspects such as energy consumption, cost, and transportation cost according to the situation where the microwave oven is located, is flexible and changeable, and has a high adaptability.

[0006] The technical solution of the utility model is: a high-efficiency transformer for a microwave oven, which includes a silicon steel sheet and a high-voltage wire, a secondary coil, and a primary coil located thereon. An installation plate is provided at the bottom of the silicon steel sheet. Secondary terminals and primary terminals are respectively connected to the secondary coil and the primary coil. The secondary coil is made of aluminum wire or copper wire or copper-clad aluminum wire, the primary coil is made of aluminum wire or copper wire or copper-clad aluminum wire, the high-voltage wire is made of copper wire or copper-clad aluminum wire, the cross-section of the primary coil is circular, oval, or square with rounded corners, and an insulating iron sheet is provided between the high-voltage wire and the primary coil.

[0007] By adopting the above technical solution, by setting the secondary coil and the primary coil as aluminum wire or copper wire or copper-clad aluminum wire, and setting the high-voltage wire as copper wire or copper-clad aluminum wire, it can be customized according to the needs of customers, meet the customized requirements of different customers, save costs while meeting the energy efficiency requirements, and the insulating iron sheet can ensure the stability of the secondary coil.

[0008] Preferably, the copper-clad aluminum wire has a copper layer coated on the outer surface of the aluminum wire, and the ratio between the aluminum wire and the copper layer is 3-4:6-7. An insulating film is provided on the outside of the aluminum wire or the copper wire or the copper-clad aluminum wire.

[0009] By adopting the above technical solution, the insulating film plays a role of insulation and non-conductivity. Wrapping copper around the aluminum wire can meet the conductivity requirement while reducing the manufacturing cost, reducing the weight for easy transportation, and also reducing the transportation cost.

[0010] Preferably, there are several insulating iron sheets, and the outer surface of the insulating iron sheets is wrapped with insulating paper. The insulating iron sheets are located at the position between the high-voltage wire and the side of the primary coil.

[0011] By adopting the above technical solution, the voltage of the primary coil fluctuates between 210V - 230V, which is extremely unstable. The iron sheet can prevent the unstable voltage of the primary coil from being transmitted to the secondary coil, so that the primary coil and the secondary coil do not affect each other.

[0012] Preferably, the silicon steel sheet includes an E-shaped steel sheet and an I-shaped steel sheet. The I-shaped steel sheet is located at the top of the opening direction of the E-shaped steel sheet. The primary coil, the secondary coil, and the high-voltage wire are all located in the opening part of the E-shaped steel sheet. Installation holes are provided on the mounting plate at the bottom of the I-shaped steel sheet.

[0013] Preferably, the primary coil, the secondary coil, and the high-voltage wire are spirally wound inside the E-shaped steel sheet. The secondary coil leads out a secondary terminal, and the primary coil leads out a primary terminal.

[0014] Preferably, the high-voltage wire leads out a terminal, and the terminal is connected to the magnetron tube of the microwave oven.

[0015] Preferably, the wires of the primary coil are placed parallel or staggered with each other.

[0016] By adopting the above technical solution, it can be placed parallel or staggered according to needs. When placed in a staggered manner, the space can be reasonably utilized.

[0017] The beneficial effects of the present utility model are as follows: 1. In the present utility model, the secondary coil and the primary coil are one of aluminum wire, copper wire, or copper-clad aluminum wire, and the high-voltage wire is one of copper wire or copper-clad aluminum wire. According to the usage requirements of the microwave oven in different regions, it can be freely selected from aspects such as energy consumption and cost according to needs, with a high degree of adaptability to meet different usage requirements.

[0018] 2. When the secondary coil and the primary coil of the present utility model adopt copper-clad aluminum wire, it can meet the energy consumption requirements, and the cost of copper-clad aluminum wire is low, and the transportation weight is also light, which can reduce the transportation cost.

[0019] 3. A iron sheet is arranged between the high-voltage wire and the primary coil of the utility model, so that the extremely unstable voltage generated by the voltage of the primary coil jumping between 210V and 230V can be prevented from being transmitted to the high-voltage wire above the patch, and there is no mutual influence. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the utility model;

[0021] Figure 2 for the utility model Figure 1 is a schematic structural diagram of the side view of the utility model;

[0022] Figure 3 for the utility model Figure 1 is a schematic structural diagram of the side view of the utility model;

[0023] Figure 4 is a schematic structural diagram of the cross-section of the primary coil of the utility model;

[0024] Figure 5 is a schematic structural diagram of the cross-section of the primary coil of the utility model being circular;

[0025] Figure 6 is a schematic structural diagram of the cross-section of the primary coil of the utility model being a square with rounded corners;

[0026] Figure 7 is a schematic structural diagram of the cross-section of the primary coil of the utility model being oval.

[0027] Wherein: 1. E-shaped steel sheet, 2. I-shaped steel sheet, 3. Primary coil, 3-1. Primary terminal, 4. High-voltage wire, 5. Secondary coil, 5-1. Secondary terminal, 6. Mounting plate, 7. Iron sheet, 8. Insulating paper, 9. Copper-clad aluminum wire, 9-1. Copper, 9-2. Aluminum, 10. Insulating film, 11. Terminal. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model.

[0029] Such as Figures 1-7As shown in the figure, a transformer for a high-efficiency microwave oven includes silicon steel sheets, and high-voltage wires 4, secondary coils 5, and primary coils 3 located thereon. An installation plate 6 is provided at the bottom of the silicon steel sheets. Secondary terminals 5-1 and primary terminals 3-1 are respectively connected to the secondary coil 5 and the primary coil 5. The secondary coil 5 is made of aluminum wire, copper wire, or copper-clad aluminum wire 9. The primary coil 3 is made of aluminum wire, copper wire, or copper-clad aluminum wire 9. The high-voltage wire 4 is made of copper wire or copper-clad aluminum wire 9. The cross-section of the primary coil 3 is circular, oval, or square with rounded corners. An insulating iron sheet 7 is provided between the high-voltage wire 4 and the primary coil 3. By setting the secondary coil 5 and the primary coil 3 as aluminum wire, copper wire, or copper-clad aluminum wire 9, and setting the high-voltage wire 4 as copper wire or copper-clad aluminum wire 9, it can be customized according to customer needs, meeting the customized requirements of different customers. While saving costs, it can also meet the energy efficiency requirements. The insulating iron sheet 7 can ensure the stability of the secondary coil 5.

[0030] The copper-clad aluminum wire 9 has a copper 9-1 layer coated on the outer surface of the aluminum 9-2 wire. The ratio between the aluminum 9-2 wire and the copper 9-1 layer is 3-4:6-7. An insulating film is provided outside the aluminum wire, copper wire, or copper-clad aluminum wire 9. The insulating film 10 plays the role of insulation and non-conduction. Wrapping copper outside the aluminum wire can meet the conductivity requirements while reducing the manufacturing cost, reducing the weight for easy transportation, and also reducing the transportation cost.

[0031] There are several insulating iron sheets 7. The outer surface of the insulating iron sheet 7 is wrapped with insulating paper 8. The insulating iron sheet 7 is located between the side of the high-voltage wire 4 and the primary coil 3. The voltage of the primary coil 3 fluctuates between 210V - 230V, which is extremely unstable. The iron sheet 7 can prevent the unstable voltage of the primary coil 3 from being transmitted to the secondary coil 5, so that the primary coil 3 and the secondary coil 5 do not affect each other.

[0032] The silicon steel sheets include E-shaped steel sheets 1 and I-shaped steel sheets 2. The I-shaped steel sheet 2 is located at the top of the opening direction of the E-shaped steel sheet 1. The primary coil 3, the secondary coil 5, and the high-voltage wire 4 are all located in the opening part of the I-shaped steel sheet 2. Installation holes are provided on the installation plate 6 at the bottom of the E-shaped steel sheet.

[0033] The primary coil 3, the secondary coil 5, and the high-voltage wire 4 are spirally wound inside the E-shaped steel sheet 2. The secondary coil 5 leads out the secondary terminal 5-1, and the primary coil leads out the primary terminal.

[0034] The high-voltage wire 4 leads out a terminal 11, and the terminal 11 is connected to the magnetron duct of the microwave oven.

[0035] The wires of the primary coil 3 can be placed parallel or staggered with each other, and can be placed parallel or staggered according to needs. When placed staggeredly, the space can be reasonably utilized.

[0036] According to the actual application requirements, the following combinations can be made, including but not limited to the following several combinations. The cross-sectional shape of the primary coil in each combination is any one of a circle, an ellipse, or a square with rounded corners;

[0037] Combination 1: The primary coil is copper-clad aluminum wire, the secondary coil is copper-clad aluminum wire, and the high-voltage wire is copper-clad aluminum wire;

[0038] Under the premise of meeting the energy efficiency, this combination has the lowest cost, and the overall weight is also relatively light, which is convenient for transportation and can also reduce the transportation cost during transportation.

[0039] Combination 2: The primary coil is copper-clad aluminum wire, the secondary coil is copper-clad aluminum wire, and the high-voltage wire is copper;

[0040] Under the premise of meeting the energy efficiency, since the high-voltage wire uses copper wire, the cost is slightly higher than that of the high-voltage wire in Combination 1, but the energy efficiency is improved, the cost is relatively low, and the overall weight is also relatively light.

[0041] Combination 3: The primary coil is copper-clad aluminum wire, the secondary coil is aluminum, and the high-voltage wire is copper;

[0042] Compared with Combination 2, although the cost of the secondary coil in this combination is reduced, the impedance of aluminum is relatively large, and the energy efficiency is slightly insufficient. However, it can also be used in areas with relatively stable power consumption.

[0043] Combination 4: The primary coil is aluminum, the secondary coil is aluminum, and the high-voltage wire is copper;

[0044] In this combination, the cost of the primary coil and the secondary coil is the lowest, but the impedance of aluminum is relatively large, and the energy efficiency performance is poor. However, it can still be used in areas with extremely stable voltage.

[0045] Combination 5: The primary coil is copper, the secondary coil is copper, and the high-voltage wire is copper;

[0046] This combination has the strongest conductivity, but the cost is also the highest. Because it is all copper wire, the overall weight is also relatively heavy, and the transportation cost will also increase accordingly during transportation.

[0047] ……

[0048] Combination n: The primary coil is one of copper, aluminum, or copper-clad aluminum wire, the secondary coil is one of copper, aluminum, or copper-clad aluminum wire, and the high-voltage wire is one of copper wire or copper-clad aluminum wire;

[0049] The requirements for cost, transportation cost, and energy efficiency can be selected according to needs, which can meet different requirements and have a high adaptability.

[0050] Those skilled in the art should understand that the embodiments of the present utility model described above and shown in the accompanying drawings are only examples and do not limit the present utility model. The object of the present utility model has been completely and effectively achieved. The functions and structural principles of the present utility model have been demonstrated and explained in the embodiments. Without departing from the said principles, any deformation or modification can be made to the embodiments of the present utility model.

Claims

1. A high-efficiency microwave oven transformer, comprising a silicon steel sheet and a high-voltage wire, a secondary coil and a primary coil thereon, a mounting plate being provided at the bottom of the silicon steel sheet, and the secondary coil and the primary coil being connected to secondary terminals and primary terminals respectively, characterized in that: The secondary coil is aluminum wire or copper wire or copper-clad aluminum wire, the primary coil is aluminum wire or copper wire or copper-clad aluminum wire, the high-voltage wire is copper wire or copper-clad aluminum wire, the cross-section of the primary coil is circular, elliptical or square with rounded corners, and an insulating iron sheet is provided between the high-voltage wire and the primary coil.

2. The high-efficiency microwave oven transformer according to claim 1, characterized in that: The copper-clad aluminum wire is an aluminum wire with a copper layer coated on its outer surface, the ratio of the aluminum wire to the copper layer is 3-4:6-7, and the aluminum wire or copper wire or copper-clad aluminum wire is provided with an insulating film on its outer surface.

3. The high-efficiency microwave oven transformer according to claim 1, characterized in that: The insulating iron sheet is provided with a plurality of sheets, the outer surface of the insulating iron sheet is covered with insulating paper, and the insulating iron sheet is located between the high-voltage conductor and the side of the primary coil.

4. The high-efficiency microwave oven transformer according to claim 1, characterized in that: The silicon steel sheet includes an E-shaped steel sheet and an I-shaped steel sheet. The I-shaped steel sheet is located at the top of the opening direction of the E-shaped steel sheet. The primary coil, the secondary coil and the high-voltage wire are all located in the opening part of the E-shaped steel sheet. A mounting hole is provided on the mounting plate at the bottom of the I-shaped steel sheet.

5. The high-efficiency microwave oven transformer according to claim 4, characterized in that: The primary coil, the secondary coil and the high-voltage wire are spirally wound in an E-shaped steel sheet, the secondary coil leads to a secondary terminal, and the primary coil leads to a primary terminal.

6. The high-efficiency microwave oven transformer according to claim 1, characterized in that: The high-voltage wire is led out with a terminal, and the terminal is connected to the magnetron tube of the microwave oven.

7. The high-efficiency microwave oven transformer according to claim 1, characterized in that: The conducting wires of the primary coil are placed in parallel or staggered.

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