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Pressure vessel detection method and electric pressure cooker

A technology of electric pressure cooker and pressure vessel, which is applied to the upper pressure detection of pressure vessel and the field of electric pressure cooker, which can solve the problems of detection error, small size of reed switch and small action surface, and achieve the effect of accurate detection and high induction sensitivity

Active Publication Date: 2017-11-21
ZHEJIANG SHAOXING SUPOR DOMESTIC ELECTRICAL APPLIANCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Pressure vessel detection method and electric pressure cooker
  • Pressure vessel detection method and electric pressure cooker
  • Pressure vessel detection method and electric pressure cooker

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Effect test

Embodiment 1

[0034] According to an embodiment of the present invention, an electric pressure cooker is provided, such as figure 2 As shown, the device includes:

[0035] The switch circuit 202 is used to open or close according to the input pulse signal;

[0036] The electromagnetic induction circuit 204 is connected to the switch circuit 202, and is used to generate an induced electromotive force according to the opening or closing of the switch circuit 202; wherein,

[0037] When the magnetically conductive device of the pressure vessel approaches the electromagnetic induction circuit 204, the currently generated induced electromotive force decreases, and the electromagnetic induction circuit 204 outputs a first voltage signal; when the magnetically conductive device is far away from the electromagnetic induction circuit At 204, the currently generated induced electromotive force increases, and the electromagnetic induction circuit 204 outputs a second voltage signal, where the first voltage ...

Embodiment 2

[0068] According to the embodiment of the present invention, there is also provided an electric pressure cooker, which includes:

[0069] A check valve, a permanent magnet arranged at the top of the check valve, and an electric pressure cooker with any of the above-mentioned characteristics arranged above the permanent magnet.

[0070] In the electric pressure cooker provided by the embodiment of the present invention, the external single-chip microcomputer of the electric pressure cooker inputs a PWM signal to the electric pressure cooker to control the opening and closing of the first switch tube and the second switch tube, so that an induced electromotive force is generated between the inductor and the power storage element. The voltage at point a is 4.5V, for example. When the permanent magnet at the top of the check valve is close to the inductor, the magnetic flux passing through the inductor decreases and the induced electromotive force decreases, and the voltage at point a ...

Embodiment 3

[0074] According to an embodiment of the present invention, there is also provided a method for detecting the upward pressure of a pressure vessel, including:

[0075] The electric pressure cooker receives pulse signals to generate induced electromotive force;

[0076] When the magnetically conductive device approaches the electric pressure cooker, the induced electromotive force currently generated decreases, and the electric pressure cooker outputs a first voltage signal, wherein the first voltage signal indicates that the pressure vessel is in an up-pressure state; When the magnetically conductive device is far away from the electric pressure cooker, the induced electromotive force currently generated increases, and the electric pressure cooker outputs a second voltage signal, wherein the second voltage signal indicates that the pressure vessel is in a pressureless state.

[0077] In the method for detecting upward pressure of a pressure vessel provided by an embodiment of the pre...

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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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A47J27/08G01L9/00
Inventor 徐久平谢有林凌金星
Owner ZHEJIANG SHAOXING SUPOR DOMESTIC ELECTRICAL APPLIANCE CO LTD
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