Pressure controlled electric pressure cooker

Abstract

The invention relates to a pressure controlled electric pressure cooker, comprising an outer cooker, an inner cooker, an electric hot tray, a cover and a control circuit. The inner cooker is arranged on the electric hot tray, the cover seals the mouth of the inner cooker, the bottom of the outer cooker is provided with a pressure detector, the pressure detector is electrically connected with the control circuit, a plurality of groups of elastic supporting devices are arranged between the electric hot tray and the bottom of the outer cooker, the electric hot tray or the elastic supporting device is provided with a touch rod capable of touching the pressure detector to act, corresponding to the elastic supporting device, the electric hot tray is provided with a strut, the elastic supportingdevice comprises an elastic plate and a pedestal, and the strut, elastic plate, pedestal and the outer cooker are sequentially connected. The invention has the advantages of simple structure, low cost and high pressure control precision.

Description

technical field [0001] The invention relates to a kitchen cooking appliance, in particular to a voltage-controlled electric pressure cooker capable of automatic pressure regulation. Background technique [0002] Most of the existing electric pressure cookers with automatic voltage regulation use the deformation of the elastic parts installed on the outer pot and the electric heating disc to realize the relative displacement between the electric heating plate and the outer pot. One of the elastic parts is a disc-shaped structure, and the disc-shaped elastic part It has the advantage of large pressure bearing capacity, but has the disadvantage that the elastic part cannot be restored when the pressure is too high. Another structure uses the outer pot bottom plus a metal plate as the elastic part, such as the elastic part disclosed in the Chinese patent No. ZL00227029.3, the outer pot The bottom is a thin plane, and a layer of metal plate is arranged on the thin plane. The ele...

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Problems solved by technology

[0002] Most of the existing electric pressure cookers with automatic voltage regulation use the deformation of the elastic parts installed on the outer pot and the electric heating disc to realize the relative displacement between the electric heating plate and the outer pot. One of the elastic parts is a disc-shaped structure. The disc-shaped elastic part has the advantage of large pressure bearing capacity, but it has the disadvantage that the elastic part cannot recover when the pressure is too large. The other structure uses the outer pot bottom plus a metal plate as the elastic part. , such as the elastic member disclosed in Chinese Patent No. ZL00227029.3, the bottom of the outer pot is a thin plane, a layer of metal plate is arranged on the thin plane, the electric heating plate is placed on the metal plate, and a travel switch is arranged at the bottom of the outer pot. The limit switch is connected to the heating circuit. The electric pressure cooker with the above structure is simple, compact and easy to process, but its elastic deformation displacement is small, the pressure control accuracy is low, and it needs to consume more elastic metal plates, and the cost is high.

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