An electromagnetic heating electric pressure cooker

Abstract

The invention relates to the technical field of electric pressure cookers, in particular to an electromagnetic heating electric pressure cooker. The electromagnetic heating electric pressure cooker structurally comprises a shell, an inner pot and an outer pot, wherein a pressure switch and a control device are arranged at the bottom of the outer pot; an annular heating disk component and a sensor component are arranged between the inner pot and the outer pot; a through hole is formed in the middle of the heating disk component; the sensor component is mounted in the through hole; the heating disk component comprises an electromagnetic heating outer disk, a radiating fan, an electromagnetic heating wire coil, an electromagnetic coil, a plurality of magnetic strips, an electromagnetic heating disk cover and an anti-magnetic disk; the sensor component comprises a fixed frame, a spring arranged on the fixed frame in a sleeving manner, a sensor cap and a thermistor; and the thermistor is electrically connected with the control device. Compared with the prior art, the electric pressure cooker has the advantages of simple structure, high radiating performance, capacity of precisely controlling pressure and temperature and long service life, truly realizes application of an electromagnetic heating technology to the electric pressure cooker, and has a wide market prospect.

Description

technical field [0001] The invention relates to the technical field of electric pressure cooker, in particular to an electromagnetic heating electric pressure cooker. Background technique [0002] With the development of home appliance technology, energy-saving and economical home appliances are a common requirement of the home appliance industry and society, and electromagnetic heating technology with energy-saving advantages is gradually applied to various heating appliances. The principle of electromagnetic heating technology is to generate an alternating magnetic field and cut the iron-containing metal container to generate an alternating current (ie, eddy current). The eddy current makes the iron atoms at the bottom of the container move at high speed and irregularly, and the atoms collide and rub against each other to generate heat energy, thereby achieving Therefore, the electric pressure cooker using electromagnetic heating technology has gradually become an emerging...

AI Technical Summary

Problems solved by technology

[0003] At present, electric pressure cookers mainly have two structures: "Korean" type and "匚" type. It will not be stressed, so high-strength non-metallic materials such as plastic can be used to replace the metal outer pot with "匚" type structure. Therefore, "Korean" type electric pressure cooker is the earliest electric pressure cooker that uses electromagnetic heating technology; while "匚" type electric pressure cooker The structure is to control the pressure by the elastic deformation of the outer pot, which is much better than the "Korean" structure in terms of performance and safety, but at the same time, because the "匚" structure needs to control the pressure by elastic deformation, the electromagnetic heating technology There are many restrictions on the application of the "匚" structure. For example, the outer pot of the "匚" structure must be made of stainless steel or cold-rolled steel material with high iron content because it must bear elastic deformation. In addition, the magnetic field can penetrate any object. The electromagnetic heating technology is directly applied to the "匚" type structure, the magnetic field penetrates the outer pot, and while the inner pot is heated, the outer pot is also heated at the same time, which makes the electromagnetic technology unable to be applied to the "匚" type. The root cause of the structure of the electric pressure cooker

[0004] Chinese patent CN 202312832U discloses an electromagnetic heating pressure cooker. In its technical solution, although the inner tank is heated by the principle of electromagnetic coil heating, its defect is that 1 ) The elastic structure of the pressure cooker is an assembled structure: it is composed of an inner container, a non-metallic support plate, and an outer container. An electromagnetic coil plate is arranged between the support plate and the outer container. The assembled elastic structure occupies a large internal space, greatly The height of the bottom of the pressure cooker is increased; 2) Since the electromagnetic coil plate is placed in the middle position, the support feet are far away from the center of the bottom of the outer tank, resulting in concentrated force on the outside of the outer tank and weak force in the middle, and the support plate adopts Non-metallic materials, its pressure bearing and elastic deformation ability are difficult to achieve accurate and stable pressure control; 3) The pressure cooker does not have a magnetic isolation device. Although there is a through hole at the bottom of the outer tank, the electromagnetic effect generated by the coil heats the inner tank at the same time. It will still heat the edge of the outer tank, which will cause the entire pressure cooker to heat up, seriously affecting the safety performance of the product, so it cannot be applied to the actual production and use of electric pressure cookers

[0005] Chinese patent CN202537143U discloses an electromagnetic pressure cooker. Although an electromagnetic shielding plate is added in its technical solution to prevent magnetic field leakage, it still has the following defects: 1) Elasticity The structure is an assembled structure: it is composed of inner tank, support seat, pressure plate, coil plate assembly, flat spring, heat preservation cover, etc. The elastic structure after assembly occupies a large internal space, resulting in the overall height of the pressure cooker being much higher than that of ordinary electric pressure cookers ;2) The heat generated by the coil disk assembly itself due to the electromagnetic effect is accumulated inside. Because the heat dissipation structure is not considered in the design, the heat generated by the electromagnetic cannot be dissipated quickly, and its heat dissipation performance is poor, which affects the service life of the electric pressure cooker.

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