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Overdraught detection method of pressure container 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: 2015-09-30
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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  • Overdraught detection method of pressure container and electric pressure cooker
  • Overdraught detection method of pressure container and electric pressure cooker
  • Overdraught detection method of pressure container and electric pressure cooker

Examples

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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 with 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 magnetic conduction device of the pressure vessel is close to the electromagnetic induction circuit 204, the induced electromotive force currently generated decreases, and the electromagnetic induction circuit 204 outputs a first voltage signal; when the magnetic conduction device is far away from the electromagnetic induction circuit At 204, the induced electromotive force currently generated increases, and the electromagnetic induction circuit 204 outputs a second voltage signal, wherein the first vol...

Embodiment 2

[0068] According to an 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 features 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 switching tube and the second switching tube, so that an induced electromotive force is generated between the inductor and the power storage element. The voltage at point a at time a is, for example, 4.5V. When the permanent magnet at the top of the check valve is close to the inductor, the magnetic flux passing through the inductor decreases, the induced electromotive force decreases, and the voltage a...

Embodiment 3

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

[0075] Electric pressure cooker receives pulse signal to generate induced electromotive force;

[0076] When the magnetic conduction device is close to 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 upward pressure state; when the When the magnetic conduction device is away from the electric pressure cooker, the currently generated induced electromotive force increases, and the electric pressure cooker outputs a second voltage signal, wherein the second voltage signal indicates that the pressure vessel is in a no-pressure state.

[0077] In the pressure vessel detection method provided by the embodiment of the present invention, an external sing...

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Abstract

The invention discloses an overdraught detection method of a pressure container and an electric pressure cooker. The overdraught detection method comprises a switching circuit for disconnection or connection according to an input pulse signal, an electro-magnetic induction circuit connected with the switching circuit and used for producing induced electromotive force according to the disconnection or connection situation of the switching circuit, wherein the currently produced induced electromotive force is decreased and the electro-magnetic induction circuit outputs a first voltage signal when a magnetic conduction device of the pressure container is close to the electro-magnetic induction circuit, and the currently produced induced electromotive force is increased and the electro-magnetic induction circuit outputs a second voltage signal when a magnetic conduction device of the pressure container is away from the electro-magnetic induction circuit, the first voltage signal indicates that the pressure container is in an overdraught state, and the second voltage signal indicates that the pressure container is in a pressure-free state. The technical problem of detection errors caused by the fact that a reed pipe in the prior art is small in size and smaller in acting face is solved.

Description

technical field [0001] The invention relates to the field of pressure detection, in particular to a pressure detection method for a pressure vessel and an electric pressure cooker. Background technique [0002] At present, the pressure detecting device of traditional pressure cooker, such as figure 1 As shown, a permanent magnet 104 is arranged on the top of the check valve 102. When the pressure is generated in the pot, the pressure pushes the check valve 102 to rise, and the magnetic force of the permanent magnet 104 makes the reed switch 106 close, thereby detecting the upward pressure in the pot; similarly , when the pressure in the pot was exhausted, the pressure in the pot was insufficient, and the check valve 102 fell due to gravity. At this time, because the reed switch 106 was disconnected due to the absence of magnetic force, it was detected that there was no pressure in the pot. [0003] However, due to the small size of the reed switch, the relatively small acti...

Claims

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Application Information

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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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