Modified electric pressure cooker

Abstract

The invention provides an improved pressure cooker, comprising an outer cooker, an inner cooker, a heating device, a sealing device, a safety device and a control circuit which controls the pressure cooker to work, the cooker bottom of the outer cooker is an elastic plate. Besides, the invention also comprises a capacitance sensor, wherein the capacitance sensor comprises a first polar plate and a second polar plate, the cooker bottom of the outer cooker is elastically deformed by the pressure to generate displacement, thus driving the first polar plate to move corresponding to the second polar plate and changing the distance between the two polar plates, then the signal of the capacitance change value is generated and inputted to the control circuit to detect and dispose, thus controlling the electric pressure cooker to work. The invention achieves the real-time detection and control of the pressure. As the pressure is continuous and adjustable, different pressure or working time can be chose according to the condition of different food during the process of cooking. The capacitance value extra generated due to the capacitance sensor being disturbed by the temperature and the electromagnetic is counteracted by the compensating capacitance greatly. The signal quantity is effectively enlarged by the lever device, thus improving the detecting accuracy and the sensibility of the capacitance sensor.

Description

technical field [0001] The invention relates to a pressure cooker, in particular to an improved electric pressure cooker. Background technique [0002] At present, the electric pressure cooker has replaced the existing old-fashioned pressure cooker due to its energy-saving, fast and convenient advantages, and has become one of the daily household appliances in the family kitchen. There are mainly three types of electric pressure cookers on the market in terms of pressure control and pressure regulation. [0003] The first type is that a flashing switch is arranged at the bottom of the outer pot of the electric pressure cooker, and the heating plate is provided with a contact rod that can touch the on-off of the flashing switch. The heating device is triggered or disconnected by using the inner pot to move up and down with the change of internal pressure during operation. When the electric pressure cooker is working, the pressure in the pot rises, and the heating plate move...

AI Technical Summary

Problems solved by technology

[0006] The problem with this type of electric pressure cooker is that the pressure cannot be adjusted, it is a fixed pressure value

[0018] In addition, the cost of using an inductance coil is also high

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