Electric pressure cooker

Abstract

The invention discloses an electric pressure cooker with weighing sensor on the bottom, which comprises the following parts: rigid transverse tray and rigid frame with rigid beam, rigid vertical connecting board and rigid tray, wherein the rigid beam and rigid tray chucks pan-lid, sealing coil, inner pan, heater and weighing sensor together from upwards to downwards, the output end of weighing sensor connects circuit control device, which controls heating condition of heater according to the testing result of weighing sensor.

Description

technical field [0001] The invention belongs to a pressure cooking appliance, in particular to an electric pressure cooker. Background technique [0002] In order to measure the internal vapor pressure (steam pressure) of the inner pot body in the early stage electric pressure cooker, a pressure measuring hole must be opened on the pot body or the pot cover, and a pressure measuring device is arranged at the pressure measuring hole. This structure was gradually replaced by the electric pressure cooker with "barrel" structure because it was unreasonable and troublesome to manufacture and use. [0003] Chinese patent CN91100026.7 pioneered and disclosed the barrel structure ("匚" type structure) of the electric pressure cooker, which is mainly composed of the barrel wall, the rigid arm arranged laterally from the upper part of the barrel wall, and the elastic arm arranged laterally from the lower part of the barrel wall. , barrel wall, and elastic arm clamp the pot cover, seal...

AI Technical Summary

Problems solved by technology

If the displacement of the elastic arm or the elastic deformation of the sealing ring is too small or too large, it will affect the overall normal use function

In practice, because the electric pressure cooker is in the working state of frequent alternating cold and hot changes for a long time, the materials of the elastic arm and the elastic sealing ring are easy to age, especially the aging of the elastic sealing ring, which leads to changes in elastic properties such as the elastic coefficient, which in turn leads to The displacement of the elastic arm is inaccurate, the elastic deformation of the sealing ring is too small, or the two do not cooperate tacitly

Although the problem of inaccurate displacement of the elastic arm can be corrected by adjusting the screw on the flashing switch, but for specific home users, the range of this adjustment action is tentative and blind, making it difficult to adjust accurately; For the problem of insufficient elastic deformation of the sealing ring, there is no remedial measure; once the sealing ring cannot normally cooperate with the elastic displacement of the elastic arm due to insufficient elastic stretch, and the elastic displacement of the elastic arm is greater than the normal stretch of the sealing ring. Failure to meet the sealing requirements will cause the steam in the pot to release pressure in advance, which will not only lead to insufficient cooking pressure in the pot, but also cause the following problems: due to the early release of gas in the pot, the steam pressure in the pot will not increase , the elastic arm will no longer move downwards, so the flash switch will not be able to automatically turn off, and the heater will continue to heat until it burns or scorches, and other serious accidents will occur if left unattended;

[0006] 3. The traditional "barrel" structure electric pressure cooker cannot select and obtain different optimal steam pressures according to different foods: Although the traditional "barrel" structure electric pressure cooker is equipped with a flashing position regulator, the flashing position regulator is located in the inner cavity Deep down, the adjustment action is very troublesome. It is impossible for ordinary users to adjust it every time they cook. Moreover, this adjustment action is very rough, tentative and blind;

[0007] 4. During the working process of the traditional "barrel" structure electric pressure cooker, the pressure of the inner pot body cannot be displayed, and the user cannot know the pressure inside the pot at any time, and cannot monitor or predict the cooking process throughout the process

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