Wire coil with multiple coils and electromagnetic heating device

Abstract

The utility model discloses a wire coil with multiple coils and an electromagnetic heating device, which comprises a wire coil rack, an inner winding area is arranged at the center of the upper part of the wire coil rack, an outer winding area is arranged around the inner winding area, an inner coil is wound on the inner winding area, an outer coil is wound on the outer winding area, and the outer coil is wound on the outer winding area. The inner coil and the outer coil are respectively connected to independent inverter circuits, and an isolation part is arranged between the inner winding area and the outer winding area. The wire coil rack is provided with the inner coil and the outer coil which are connected to different inverter circuits, the inner coil and the outer coil are independently controlled, the inner coil is used for heating when a small amount of food materials are cooked in the pot body, the outer coil is used for heating when a normal amount of food materials are cooked in the pot body, the heating power of the inner coil and the heating power of the outer coil are fully utilized, and energy loss is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic heating, in particular to a wire drum with multiple coils and an electromagnetic heating device. Background Art

[0002] Induction cooker is a modern kitchen appliance that uses the principle of electromagnetic induction for heating. The coil under the induction cooker is connected to alternating current to generate an alternating magnetic field. When a pot made of ferromagnetic material is placed on the stove, the alternating magnetic field will cause a large number of dense eddy currents to be generated at the bottom of the pot. These eddy currents are converted into heat energy due to the resistance of the pot bottom material, which quickly heats the pot bottom, thereby achieving the purpose of heating the food. Since the heat is generated directly in the pot, the thermal efficiency of the induction cooker is very high, reaching 80% to 92% or more. When heating different amounts of food in the pot, the coil size is fixed, which can easily cause uneven heating of the food and power loss.

[0003] CN219644412U discloses an electromagnetic wire coil and electromagnetic cooking utensil with uniform heating. The electromagnetic wire coil includes a wire coil support and an electromagnetic induction coil. The wire coil support is provided with a winding area. The electromagnetic induction coil is wound on the winding area. The electromagnetic induction coil includes an outer coil and an inner coil respectively arranged on the inner and outer sides of the wire coil support. The setting height of the outer coil is greater than that of the inner coil. The wire coil support is provided with a partition rib for dividing the outer coil and the inner coil. The bottom of the wire coil support is equipped with an outer magnetic strip corresponding to the outer coil and an inner magnetic strip for the inner coil. The outer end of the inner magnetic strip extends to the partition rib and / or the inner end of the outer magnetic strip extends to the partition rib. In this technical solution, the outer coil and the inner coil are arranged on the inner and outer sides of the wire coil support, which improves the heating efficiency of the center of the wire coil. When only a small amount of food is cooked in the pot, the heating of the outer coil does not fully act on the food, resulting in energy loss. Utility Model Content

[0004] The purpose of the utility model is to provide a wire drum with multiple coils and an electromagnetic heating device, which solves the problem of separately arranging outer coils and inner coils on the inner and outer sides of a wire drum bracket, thereby improving the heating efficiency of the center of the wire drum. When only a small amount of food is cooked in a pot, the heating of the outer coil does not fully act on the food, resulting in energy loss, so as to overcome the shortcomings of the prior art.

[0005] The utility model provides a wire drum with multiple coils through the following technical scheme, including a wire drum frame, wherein an inner winding area is provided at the upper center of the wire drum frame, an outer winding area is provided around the inner winding area, an inner coil is wound on the inner winding area, an outer coil is wound on the outer winding area, the inner coil and the outer coil are respectively connected to independent inverter circuits, and an isolation portion is provided between the inner winding area and the outer winding area.

[0006] Furthermore, the isolation portion is a first isolation rib and a second isolation rib arranged between the inner winding area and the outer winding area, and an isolation groove is formed between the first isolation rib and the second partition.

[0007] Furthermore, an isolation component is provided in the isolation slot to shield electromagnetic interference between the inner coil and the outer coil.

[0008] Furthermore, the inner coil and the outer coil are wound separately and each uses an excitation wire, the inner coil is provided with a first inner lead and a first outer lead, the first inner lead and the first outer lead are connected to a first inverter circuit, and the outer coil is provided with a second inner lead and a second outer lead, the second inner lead and the second outer lead are connected to a second inverter circuit.

[0009] Furthermore, the outer winding area is provided with a plurality of winding grooves, the winding grooves are radially arranged in sequence around the center of the bobbin frame, and the outer coil is located in the winding grooves.

[0010] Furthermore, the winding density of the outer coil is lower than the winding density of the inner coil.

[0011] Furthermore, a plurality of magnetic stripe slots are provided at the bottom of the wire drum rack, and the magnetic stripe slots are radially arranged around the center of the wire drum rack, and magnetic strips are provided in the magnetic stripe slots.

[0012] Furthermore, a wire threading groove is provided on a side edge of the wire drum frame, and the first inner lead, the first outer lead, the second inner lead and the second outer lead are passed through the wire threading groove.

[0013] The utility model also provides an electromagnetic heating device, comprising any one of the above-mentioned wire drums with multiple coils.

[0014] The utility model has the following beneficial effects: an inner coil and an outer coil connected to different inverter circuits are arranged on an online pan rack, the inner coil and the outer coil are independently controlled, the inner coil is used for heating when a small amount of food is cooked in the pot, and the outer coil is used for heating when a normal amount of food is cooked in the pot, thereby making full use of the heating power of the inner coil and the outer coil and avoiding energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front structural schematic diagram of a wire drum rack having a wire drum with multiple coils according to the utility model.

[0016] Figure 2 This is a schematic diagram of the back structure of a wire drum rack having a wire drum with multiple coils according to the utility model.

[0017] Figure 3 It is a front schematic diagram of a wire drum with multiple coils described in the utility model.

[0018] Figure 4This is an exploded schematic diagram of a wire drum with multiple coils described in the utility model.

[0019] Figure 5 It is a schematic diagram of the back side of a wire drum with multiple coils described in the utility model.

[0020] in, Figures 1 to 5 The corresponding relationship between the reference numerals and component names in the figure is:

[0021] 1. Wire drum rack, 2. inner winding area, 3. outer winding area, 4. inner coil, 5. outer coil, 6. isolation portion, 7. first isolation rib, 8. second isolation rib, 9. isolation slot, 10. isolation assembly, 11. first inner lead, 12. first outer lead, 13. second inner lead, 14. second outer lead, 15. winding slot, 16. magnetic strip slot, 17. magnetic strip, 18. threading slot. DETAILED DESCRIPTION

[0022] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0023] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0024] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0025] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] Refer to the following Figure 1-5 A wire drum with multiple coils according to some embodiments of the present application is described.

[0028] A wire reel with multiple coils includes a wire reel frame 1, an inner winding area 2 is provided at the upper center of the wire reel frame 1, an outer winding area 3 is surrounded by the inner winding area 2, an inner coil 4 is wound in the inner winding area 2, and an outer coil 5 is wound in the outer winding area 3. The inner coil 4 and the outer coil 5 are respectively wound separately and each uses an excitation wire, the inner coil 4 is provided with a first inner lead 11 and a first outer lead 12, the first inner lead 11 and the first outer lead 12 are connected to a first inverter circuit, the outer coil 5 is provided with a second inner lead 13 and a second outer lead 14, the second inner lead 13 and the second outer lead 14 are connected to a second inverter circuit, and the first inverter circuit and the second inverter circuit are mutually independent inverter circuits controlled by an electromagnetic heating device.

[0029] When the first inverter circuit is working, the inner coil 4 can heat the pot body area corresponding to the inner winding area 2. When only a small amount of food is cooked in the pot, the food is concentrated in the central area of ​​the pot body. In this heating mode, heat is transferred from the inside to the outside, and the food rolls from the inside to the outside after boiling. The food is fully heated by the inner coil 4, the heating speed is fast, and the heating effect is uniform.

[0030] When the second inverter circuit is working, the outer coil 5 can heat the pot body area corresponding to the outer winding area 3; in this heating mode, heat is transferred from the outside to the inside when cooking a normal amount of food in the pot, and the food rolls from the outside to the inside after boiling. The food is fully heated by the outer coil 5, the heating speed is fast, and the heating effect is uniform.

[0031] An isolation portion 6 is provided between the inner winding area 2 and the outer winding area 3. The isolation portion 6 is a first isolation rib 7 and a second isolation rib 8 provided between the inner winding area 2 and the outer winding area 3. The inner coil 4 is located on the inner side of the first isolation rib 7, and the outer coil is located on the outer side of the second isolation rib 8. An isolation groove 9 is formed between the first isolation rib 7 and the second isolation rib 8. An isolation component 10 is provided in the isolation groove 9. In this way, when the inner coil 4 or the outer coil 5 is working, the electromagnetic wave generated by the working coil will not be interfered by the adjacent non-working coil under the shielding effect of the isolation component 10, thereby affecting the normal operation of the coil.

[0032] Under normal use, the central area of ​​the pot body only occupies a small part of the entire pot body area, so the area of ​​the outer winding area 3 is also larger than the inner winding area 2. In order to achieve basically the same heating efficiency in different areas, the winding density of the inner coil 4 is higher than the winding density of the outer coil 5. Therefore, a plurality of winding grooves 15 are provided in the outer winding area 3, and the winding grooves 15 are radially arranged in sequence around the center of the bobbin frame 1. The outer coil 5 is arranged in the winding grooves 15, so that the outer coil 5 can achieve an appropriate winding density and provide stable support and fixation for the outer coil 5.

[0033] A plurality of magnetic stripe slots 16 are provided at the bottom of the wire drum rack 1 , and the magnetic stripe slots 16 are radially arranged around the center of the wire drum rack 1 . Magnetic stripes 17 are provided in the magnetic stripe slots 16 for working with the inner coil 4 or the outer coil 5 .

[0034] A wire threading groove 18 is provided at the side edge of the wire reel frame 1 , and the first inner lead 11 , the first outer lead 12 , the second inner lead 13 and the second outer lead 14 are threaded in the wire threading groove 18 .

[0035] The present application also provides an electromagnetic heating device, comprising the wire coil with multiple coils as described above.

[0036] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wire drum with multiple coils, comprising a wire drum frame, wherein an inner winding area is provided at the center of the upper portion of the wire drum frame, and an outer winding area is provided around the inner winding area, wherein: The inner winding area is wound with an inner coil, the outer winding area is wound with an outer coil, the inner coil and the outer coil are respectively connected to independent inverter circuits, and an isolation portion is provided between the inner winding area and the outer winding area.

2. A wire drum with multiple coils according to claim 1, characterized in that: The isolation portion is a first isolation rib and a second isolation rib arranged between the inner winding area and the outer winding area, and an isolation groove is formed between the first isolation rib and the second partition.

3. A wire drum with multiple coils according to claim 2, characterized in that: An isolation component is arranged in the isolation slot to shield electromagnetic interference between the inner coil and the outer coil.

4. A wire drum with multiple coils according to claim 1, characterized in that: The inner coil and the outer coil are wound separately and each uses an excitation wire. The inner coil is provided with a first inner lead and a first outer lead, and the first inner lead and the first outer lead are connected to a first inverter circuit. The outer coil is provided with a second inner lead and a second outer lead, and the second inner lead and the second outer lead are connected to a second inverter circuit.

5. A wire drum with multiple coils according to claim 1, characterized in that: The outer winding area is provided with a plurality of winding grooves, which are radially arranged in sequence around the center of the bobbin frame, and the outer coil is located in the winding grooves.

6. A wire drum with multiple coils according to claim 1, characterized in that: The winding density of the outer coil is lower than the winding density of the inner coil.

7. A wire drum with multiple coils according to claim 1, characterized in that: A plurality of magnetic stripe slots are arranged at the bottom of the wire drum rack, and the magnetic stripe slots are radially arranged around the center of the wire drum rack, and magnetic stripes are arranged in the magnetic stripe slots.

8. A wire drum with multiple coils according to claim 4, characterized in that: A wire threading groove is provided on the side edge of the wire drum frame, and the first inner lead, the first outer lead, the second inner lead and the second outer lead are passed through the wire threading groove.

9. An electromagnetic heating device, characterized in that: A wire drum with multiple coils comprising any one of claims 1-8.

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