CN201448895U - Electric stove - Google Patents

Abstract

An electric heating stove comprises a top plate, an electric heating element and a switch, wherein more than one heating area is arranged on the surface of the top plate, a rare earth thick film circuit is arranged in the heating area and is used as the electric heating element, and at least an insulating layer formed by compact medium slurry is arranged on the rare earth thick film circuit. Food transferred to the top plate heating zone by radiation, conduction or convection. The rare earth thick film circuit is arranged on the controllable circuit substrate, and the controllable circuit substrate is fixed on the top plate. The utility model can heat the baked food quickly when the power is switched on because the rare earth thick film circuit is used as the controllable electric heating element. The test shows that the surface heating speed of the rare earth thick film can reach 200-300 ℃/S, which cannot be reached by the traditional electric heating element. The novel energy-saving food cooker has the advantages of high thermal efficiency, quick hot start, uniform temperature field, short time for cooking food, good food cooking permeability, rapider and more convenient use, safety, reliability and energy conservation.

Description

Electric stove

technical field

The utility model relates to an electric heating cooker using a novel heating element, which belongs to the technical field of the electric heating cooker.

Background technique

The existing electric heating range is a heating device that heats the food on the countertop or the food in the container through heat radiation, conduction and convection through the heating plate, so as to cook the food. However, the electric heating cookers sold on the market generally use metal heating wires as heating elements. The electric heating cookers using metal heating wires have the following disadvantages: long warm-up time, low thermal efficiency, and long heating time. Moreover, the power deviation of the heat pipe is large (15% deviation), the power density is small (5-10W/CM ² ), and the manufacturing process is complicated. Chinese Patent Document No. CN200965279 disclosed an electrothermal film heating stove on October 24, 2007. An electric heating film heater is installed on the stove body, and various heating appliances such as pots, pots, beakers, and casseroles of various materials are Put it on the electric heating film heater, use the heat generated by the electric heating film heater to heat food, water, oil and other substances in various heating appliances, so as to achieve traditional stewing, boiling, frying, frying, braising, steaming, roasting, Various cooking purposes such as rinsing and heating. It is said that it has the characteristics of fast heating speed, energy saving, environmental protection and safety, long service life, no electromagnetic radiation, high thermal efficiency, and convenient use. It can replace electric stoves, gas stoves, induction cookers and various traditional heating stoves and stoves. But its structure is more complicated, and manufacturing cost is higher, it is necessary to further improve and perfect.

Utility model content

The purpose of the utility model is to provide a simple and reasonable structure, low manufacturing cost, short cooking time, safe and energy-saving electric heating cooker using a new type of heating element, so as to overcome the shortcomings of the prior art.

An electric heating cooker designed according to this purpose includes a top plate, an electric heating element and a switch. The upper layer is an insulating layer made of dense dielectric paste. Rapidly cooks food by radiant, conductive or convective transfer to food on the top plate heating zone or in containers.

The rare earth thick film circuit is arranged on the controllable circuit substrate, and the controllable circuit substrate is fixed on the top plate.

The heating area is plane or concave; the heating area is square, circular, polygonal or a combination thereof. The hot zone is 1-9.

The switch is mechanical or electronic. The cooking range is also provided with a thermostat, temperature and function display screens.

Because the utility model uses a rare-earth thick-film circuit as a controllable electric heating element, the utility model can quickly heat and cook food when the power is turned on. After testing, the heating rate of the rare earth thick film surface can reach 200-300°C/S, which is beyond the reach of traditional electric heating elements. In the preparation process of the rare earth thick film circuit, the dense dielectric paste is added as an insulating layer, and the surface is non-conductive, so that the electric heating cooker has the characteristics of preventing electric shock and is safe and reliable. Since the power density of the electric heating element of the rare earth thick film circuit is 40-60W/CM ² , which is 4-6 times that of the traditional electric heating material, the heating element is small in size and saves installation space. Rare earth thick film circuit controllable heating elements can realize automatic temperature compensation. When various external factors cause large fluctuations in system temperature, the rare earth thick film circuit heater itself quickly adjusts the heating power, automatically performs positive and negative compensation, and maintains constant temperature work. , so that the temperature field of the electric stove is uniform, and the cooked food tastes good. This product has a long service life, the heating element of the thick film circuit does not oxidize, and the service life can reach more than 10,000 hours. It is safe and reliable, and it can save energy by 30% compared with the traditional heating element.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of the first implementation of the heating element in FIG. 1 .

FIG. 3 is a schematic structural diagram of the second implementation of the heating element in FIG. 1 .

Fig. 4 is the schematic circuit diagram of the utility model.

Parts irrelevant to the design points of the present utility model are omitted among the figures.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Referring to FIG. 1 , FIG. 2 and FIG. 4 , the electric heating cooker includes a top plate 1 , and a heating area 2 is arranged on the upper surface of the top plate 1 . The inside 12 of the top plate 1 is provided with a rare earth thick film circuit 3 at a portion corresponding to the heating area 2 . The circuit can be prepared according to different electrical parameters. The cavity plate of the prepared circuit forms an electric heating element with a non-conductive surface. The inner part 12 of the prepared rare earth thick film circuit is the working surface of the electric heating element, and the heating area 2 is the application surface. The heating element is connected to the working circuit shown in FIG. 4 , which is composed of a mechanical/electronic switch 9 , a temperature controller 10 , a rare earth thick film circuit 3 and a power supply 8 . When the switch 9 is closed and the power supply 8 is connected, the working surface of the electric heating element starts to work, the working surface has no obvious temperature change, and the application surface starts to generate heat, and the heat generated by the rare earth thick film circuit 3 heats the food through heat radiation, conduction and convection . In order to protect the heating element, the working circuit is equipped with a thermostat to limit the temperature. When the rare earth thick film heating element is overheated and the temperature of the application surface is higher than 350°C, the thermostat disconnects the circuit and the heating element stops working.

Figure 3 is a schematic structural view of installing and preparing a rare earth thick film controllable circuit substrate 4 on the inner or outer wall of the top plate 1. The rare earth thick film circuit is prepared on the working surface of the substrate, and the surface on which the rare earth thick film controllable circuit is prepared is the working surface. The heat generated by the application surface of the substrate heats the food through radiation, conduction and convection. Of course, the application surface of the substrate is closest to the food relative to the working surface. Its working principle is the same as Embodiment 1.

The utility model has the advantages of high heat efficiency, fast heat start, uniform temperature field, short cooking time, good food ripeness, faster and more convenient use, safety, reliability and energy saving.

Claims (6)

1. electric heating kitchen range, comprise top board (1), heating and switch (9), it is characterized in that the top board surface is provided with more than one hot zone (2), inside, hot zone is provided with rare earth thick film circuit (3) as heating, and the top of rare earth thick film circuit is insulating barrier.

2. electric heating kitchen range according to claim 1 is characterized in that described rare earth thick film circuit (3) is arranged on the controlable electric current substrate (4), and the controlable electric current substrate is fixed on the top board (1).

3. electric heating kitchen range according to claim 1 and 2 is characterized in that described hot zone (2) is plane or inner concave; The hot zone is square, circular, polygon or their combination.

4. electric heating kitchen range according to claim 1 is characterized in that described hot zone (2) is 1-9.

5. electric heating kitchen range according to claim 1 is characterized in that described switch (9) is mechanical type or electronic type.

6. electric heating kitchen range according to claim 1 is characterized in that also being provided with on the kitchen range temperature controller (10), temperature and function display screen.

Images