Pressure vessel detection method and electric pressure cooker

Abstract

The invention discloses an upward pressure detection method of a pressure vessel and an electric pressure cooker. Wherein, the method includes: a switch circuit, used for opening or closing according to the input pulse signal; an electromagnetic induction circuit, connected with the switch circuit, for generating induced electromotive force according to the opening or closing of the switch circuit; wherein , when the magnetic conduction device of the pressure vessel is close to the electromagnetic induction circuit, the induced electromotive force currently generated decreases, and the electromagnetic induction circuit outputs a first voltage signal; when the magnetic conduction device is far away from the electromagnetic induction circuit , the induced electromotive force currently generated increases, and the electromagnetic induction circuit outputs a second voltage signal, wherein the first voltage signal indicates that the pressure vessel is in a pressurized state, and the second voltage signal indicates that the pressure The container is in an unpressurized state. The invention solves the technical problem of detection error caused by the small volume and relatively small action surface of the dry reed switch in the prior art.

Description

Technical field [0001] The invention relates to the field of pressure detection, in particular to a method for detecting the upper pressure of a pressure vessel and an electric pressure cooker. Background technique [0002] Currently, traditional pressure cooker pressure detection devices, such as figure 1 As shown, a permanent magnet 104 is provided at the top of the check valve 102. When pressure is generated in the pot, the pressure pushes the check valve 102 to rise, and the magnetic force of the permanent magnet 104 closes the reed pipe 106, thereby detecting the upward pressure in the pot; When the pressure in the pot is exhausted, the pressure in the pot is insufficient, and the stop valve 102 drops due to gravity. At this time, because the reed switch 106 is disconnected due to no magnetic force, it is detected that there is no pressure in the pot. [0003] However, due to the small volume of the reed switch and the relatively small acting surface, and the large dispersion ...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a method for detecting pressure on a pressure vessel and an electric pressure cooker, so as to at least solve the technical problem of detection errors due to the small volume and relatively small operating surface of the reed switch in the prior art

Images