CN200980570Y - Novel induction heating electric cooker - Google Patents

Abstract

A novel induction heating electric rice cooker belongs to the technical field of electromagnetic heating for kitchens, and comprises a cooking body (2), an inner pot (1), a thermal insulation ring (3), a coil frame (5) and an induction coil (7). In the coil frame, the induction coil (7) is connected with the control circuit of the electric cooker, and it is characterized in that a thermal insulation wire (4) is housed in the middle of the thermal insulation ring (3), and the thermal insulation wire (4) is connected with the thermal insulation control circuit, and the induction coil (7) is an imitation The shape of the bottom of the inner pot is a horizontal plane from the middle, and a spiral induction coil extending from the middle to form a convex arc surface at the periphery. The induction coil (7) is spirally wound on the coil frame (5). At the outer bottom (B) and at the outer curved surface (A). The spiral induction coil of the utility model cooperates with the shape of the convex arc surface of the pot bottom, so that the heating area of the inner pot is increased, and the thermal efficiency is greatly improved. Realize the large heating area of the pot.

Description

A New Induction Heating Electric Rice Cooker

Technical field

The utility model belongs to the technical field of electromagnetic heating for kitchens, in particular to an electromagnetic induction heating electric rice cooker.

Background technique

At present, in the prior art, the electromagnetic induction heating rice cooker is mostly arranged with a heating plate (wire frame) and an inner pot inside the shell of the electric cooker, and the induction coil is arranged on the bottom surface of the coil frame, and the upper surface of the heating plate is flat. The excitation induction coil is made into a flat plate, and then the excitation induction coil is bonded on the flat coil frame by various chemical colloids, and then attached to the wire frame after baking, such as the Chinese utility model patent CN2601599Y "an electromagnetic rice cooker "(announcement date is February 4th, 2004) replaces heating type heating plate with flat electromagnetic heating plate and electromagnetic coil. Chinese Invention Patent CN1301516A "Electromagnetic Induction Heating Electric Rice Cooker" (disclosure date is July 4, 2001) cancels the heating plate of traditional electric rice cooker equally, replaces it with electromagnetic coil, is installed in the interlayer between inner pot bottom and insulation cover.

When the electromagnetic rice cooker is working, the magnetic field generated by the induction coil makes the inner pot heat up, and the food in the inner pot is cooked. The above-mentioned electromagnetic rice cooker has the following disadvantages:

1. The alternating magnetic field generated by the induction coil only partially heats the bottom of the inner pot, causing the food in the inner pot to be heated unevenly;

2. The flat winding makes the ventilation effect between the wire strands not good, and the heat cannot be dissipated in time, which greatly reduces the life of the coil;

3. The winding method is dense and the material cost increases;

4. The structural heating area of this kind of wire rack is small, which affects the effective heating area of the appliance;

5. Several strands are tightly wound, and there is no gap between the coils, which increases the probability of short circuit between the coils, which can easily lead to safety hazards such as burn-in of electromagnetic heating appliances.

Contents of Invention

In order to overcome the defects of uneven heating and poor ventilation between strands in the prior art, an induction heating electric rice cooker with obvious heat dissipation effect, low manufacturing cost, safe, reliable and stable operation and large heating area of the pot is provided. The utility model The coil frame is provided, and the heating wire is used for heat preservation, so that the side of the inner pot is evenly heated.

In order to achieve the above object, the utility model adopts the following structure:

A new type of induction heating electric rice cooker, including a body, an inner pot, a heat preservation ring, a coil frame and an induction coil. Heat preservation control circuit, the induction coil is a spiral induction coil imitating the shape of the bottom of the inner pot. At the outer bottom of the bobbin and at the outer arc surface.

The said spiral induction coil is made into two or more groups, which can be at least two groups of intermittent helical coils wound on the coil frame, and can also be combined with at least two groups of planar and intermittent helical coils wound on the coil frame; or intermittent The combination of spiral type and multi-group planar type is wound on the bobbin.

Further, the induction coil in the present invention can be composed of at least two wires.

In the utility model, the wires for winding induction coils are called intermittent spiral type with larger gaps between adjacent wire coils during winding, and the wires without gaps or small gaps are flat.

Compared with the electromagnetic heating electric rice cooker of the prior art, the utility model has the beneficial effects of:

1. The spiral induction coil cooperates with the convex arc surface of the bottom of the pot to increase the heating area of the inner pot and greatly improve the thermal efficiency.

2. Intermittent spiral electromagnetic coils are included in the winding of the wire, which has a certain gap and has an obvious heat dissipation effect, low manufacturing cost, safe, reliable and stable work, and realizes a large heating area of the pot.

                    Instructions attached

Fig. 1 is the structural representation of the utility model.

Fig. 2(a)-Fig. 2(c) are schematic diagrams of the induction coil of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the utility model will be further described:

Example 1

The utility model is shown in Fig. 1 and Fig. 2(a)-Fig. 2(c), comprising a pot body 2 and a coil frame 5, an inner pot 1 is arranged in the pot body 2, and the inner pot 1 is placed in the coil frame 5 , the induction coil 7 is clamped and fastened on the bottom of the coil frame 5 through the ferrite 6, and the induction coil 7 is connected with its control circuit.

Insulation ring 3 middle part is equipped with the insulation wire 4 of independent heating, and insulation wire is contained on the heating ring, independent circuit control, can realize food insulation without main power heating, easy to replace after being broken.

The induction coil 7 is a spiral induction coil, matching the shape of the bottom of the inner pot 1, forming a horizontal plane from the middle part, and a convex arc surface extending from the middle part outwards from the peripheral part.

The induction coil 7 can be made into two or more groups, and can be at least two groups of intermittent helical windings on the coil frame as shown in Figure 2 (a), or as shown in Figure 2 (b), it can be planar and at least two A combination of intermittent spirals is wound on the coil frame; or a combination of intermittent spirals and multiple sets of planes is wound on the coil frame, as shown in Figure 2(c).

Example 2

The induction coil 7 is composed of two wires. When the induction coil 7 is wound, a certain gap is left between adjacent wire coils. Two groups of coils are intermittently wound on the coil frame, and the gap between the wires can ensure smooth heat dissipation.

All the other are with embodiment 1.

Claims (5)

1. A new type of induction heating rice cooker, comprising a body (2), an inner pot (1), a thermal insulation ring (3), a coil frame (5) and an induction coil (7). The inner pot is placed in the coil frame, and the induction coil (7) It is connected with the control circuit of the electric cooker, and it is characterized in that a heat preservation wire (4) is housed in the middle part of the heat preservation ring (3), and the heat preservation wire (4) is connected with the heat preservation control circuit, and the induction coil (7) is shaped like the bottom of the inner pot, from The center is a horizontal plane, and the periphery is a spiral induction coil extending outward from the middle to form a convex arc surface. The induction coil (7) is spirally wound on the coil frame (5), respectively at the outer bottom (B) of the coil frame (5) and At the outer arc surface (A). 2. The novel induction heating electric rice cooker according to claim 1, characterized in that the induction coils are at least two groups of intermittent helical coils wound on the coil frame (5). 3. The novel induction heating electric rice cooker according to claim 1, characterized in that the induction coil is planar and at least two groups of intermittent helical coils are wound on the coil frame (5). 4. The novel induction heating electric rice cooker according to claim 1, characterized in that the induction coil is wound on the coil frame (5) in an intermittent spiral type and multi-group planar type. 5. The novel induction heating rice cooker according to any one of claims 1-4, which is characterized in that the induction coil is composed of at least two wires.

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