CN108628187B

CN108628187B - Control method for high-pressure sterilization and cooking appliance

Info

Publication number: CN108628187B
Application number: CN201710165427.0A
Authority: CN
Inventors: 房振; 王新元; 严平; 苏莹; 李晶; 杜放
Original assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Priority date: 2017-03-20
Filing date: 2017-03-20
Publication date: 2021-03-16
Anticipated expiration: 2037-03-20
Also published as: CN108628187A

Abstract

The invention provides a control method of high-pressure sterilization and a cooking utensil, wherein in the control method of high-pressure sterilization, firstly, when reservation information is received, a reservation stage is started to enter, the voltage between an electrode and an inner pot in the cooking utensil is increased to a first preset voltage value, the first preset voltage value is a high voltage value, the high voltage between the electrode and the inner pot can carry out high-pressure sterilization on the interior of the cooking utensil, the high voltage ionizes a large amount of positive ions and negative ions in the cooking utensil, the positive ions and the negative ions are combined in a material liquid mixture of the cooking utensil, a large amount of energy is generated during combination, so that bacteria generated in the material liquid mixture in the reservation stage are killed by the energy released by the positive ions and the negative ions, the effect that the bacteria cannot be bred in the cooking utensil in the reservation stage is achieved, and after a long-time reservation stage is finished, the food in the cooking utensil is still fresh and safe, and the market competitiveness of the product is effectively improved.

Description

Control method for high-pressure sterilization and cooking appliance

Technical Field

The invention relates to the field of household appliances, in particular to a control method for high-pressure sterilization and a cooking appliance.

Background

At present, in the related art, cooking appliances have an appointment function, the appointment function greatly facilitates cooking in daily life of users, after the users put food materials and water into a pot and set appointment time, programs do not change, and only food materials are soaked, so that the food materials and the water are extremely prone to souring and deterioration; due to the fact that long-time reservation easily causes deterioration of food materials and breeding of bacteria, application of reservation functions is restricted, particularly in summer, the food materials deteriorate more quickly, and the allowed reservation time is shorter.

Therefore, it is an urgent need to solve the above-mentioned problems by designing a control method of high pressure sterilization and a cooking utensil with simple structure and sterilization and fresh-keeping functions at the reservation stage.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

To this end, a first object of the present invention is to propose a control method of autoclaving.

A second object of the present invention is to provide a cooking appliance.

In view of the above, according to a first object of the present invention, there is provided a method for controlling autoclaving in a cooking appliance, comprising: receiving the reserved time length information and starting timing; the voltage between an electrode and an inner pot in the cooking utensil is increased to a first preset voltage, and sterilization is started; when the reserved time length is over, the voltage between the electrode and the inner pot is cut off; the heating device is turned on and the cooking appliance enters the cooking stage.

The control method of the high-pressure sterilization provided by the invention firstly starts to enter the reservation stage after receiving the reservation information, the voltage between the electrode and the inner pot in the cooking utensil is increased to a first preset voltage value, at the moment, the first preset voltage value is a high voltage value, the high voltage at the two ends of the electrode and the inner pot can carry out high-pressure sterilization on the interior of the cooking utensil, the high voltage ionizes a large amount of positive ions and negative ions in the interior of the cooking utensil, the positive ions and the negative ions are combined in the material liquid mixture of the cooking utensil, a large amount of energy is generated at the same time of combination, so that bacteria generated in the material liquid mixture in the reservation stage are killed by the energy released by the positive ions and the negative ions, the effect that the bacteria cannot be bred in the interior of the cooking utensil in the reservation stage is achieved, and the food in the cooking utensil is still fresh and safe after the long-time, effectively improving the market competitiveness of the product.

In addition, the control method for high pressure sterilization provided by the above embodiment of the invention also has the following additional technical features:

in any of the above technical solutions, preferably, before the step of raising the voltage between the electrode in the cooking appliance and the inner pot to a first preset voltage, the method further includes: lowering the electrode by a preset height; before the step of turning on the heating device, the method further comprises the following steps: and lifting the electrode by a preset height.

In the technical scheme, before the voltage between the electrode and the inner pot in the cooking utensil is increased to a first preset voltage, the electrode is lowered by a preset height, and the preset height is the minimum distance which ensures that the electrode and the inner pot are not punctured, so that the best sterilization effect can be ensured; and after the sterilization is finished, lifting the electrode by a preset height.

In any of the above technical solutions, preferably, after the step of raising the voltage between the electrode and the inner pot in the cooking appliance to a first preset voltage, the method further includes: after the first preset time, disconnecting the voltage between the electrode and the inner pot for a second preset time; judging whether the reserved time length is finished or not; and when the reserved time length is not finished, returning to the step of increasing the voltage between the electrode and the inner pot in the cooking appliance to a first preset voltage.

In the technical scheme, after the voltage between the electrode and the inner pot is increased to the first preset voltage value, the first preset time is kept, after the first preset time is ended, the inside of the cooking utensil is close to be sterile, the voltage between the electrode and the inner pot is disconnected, the second preset time is kept, the waste of energy is effectively saved, whether the reserved time is ended or not is judged, and if the reserved time is not ended, the voltage between the electrode and the inner pot is increased to the first preset voltage value to continue sterilization.

In any of the above technical solutions, preferably, the method further includes: when the preset time length is over, judging whether to cut off the voltage between the electrode and the inner pot; when the voltage between the electrode and the inner pot is not disconnected, the step of disconnecting the voltage between the electrode and the inner pot is executed; when the voltage between the electrode and the inner pot is disconnected, the step of lifting the electrode by the preset height is executed.

In the technical scheme, when the preset time is reserved, whether the voltage between the electrode and the inner pot is disconnected or not is judged; when the voltage between the electrode and the inner pot is not disconnected, the voltage between the electrode and the inner pot needs to be immediately disconnected at the moment, and the subsequent steps can be carried out.

In any of the above technical solutions, preferably, the method further includes: reducing the voltage at two ends of a main control module of the cooking appliance; judging whether an upper cover of the cooking appliance is closed or not; when the upper cover is closed, the step of descending the electrode by a preset height is executed; when the upper cover is not closed tightly, the alarm device is started.

In the technical scheme, after the reserved time length information is received, the voltages at the two ends of the main control module need to be reduced to a low voltage value, whether the upper cover of the cooking appliance is closed tightly needs to be judged, the voltage is safely raised when the upper cover is closed tightly, voltage leakage cannot occur, when the upper cover is detected not to be closed tightly, the problem that the voltage is unsafe when the voltage is raised at the moment and electric leakage is likely to occur is solved, an alarm device is started, and a user is reminded to close the upper cover tightly.

In any of the above technical solutions, preferably, before the step of turning on the heating device, the method further includes: and starting the discharge device to discharge the voltage between the electrode and the inner pot.

In this technical scheme, still need open bleeder mechanism before opening heating device, pass through bleeder mechanism with the residual electric charge between the upper and lower plate electrode and release away for the user can not take place to electrocute scheduling problem when follow-up operating cooking utensil, has promoted the security performance of product.

In any of the above technical solutions, preferably, the step of reducing the voltage across the main control module specifically includes: reducing the voltage at two ends of the main control module to between 5V and 36V; and converting alternating current at two ends of the main control module into direct current.

In the technical scheme, the specific operation in the step of reducing the voltage at two ends of the main control module is as follows: the voltage at the two ends of the main control module is reduced to be between 5V and 36V, and alternating current at the two ends of the main control module is converted into direct current so as to meet the requirements of the main control module.

In any of the above technical solutions, preferably, the first preset voltage is in a range of 1.5KV to 2.5 KV.

In the technical scheme, the first preset voltage is set to be a high voltage value between 1.5KV and 2.5KV, so that effective sterilization and insurance can be guaranteed for the interior of the cooking appliance in the reservation stage.

Embodiments of a second aspect of the present invention provide a cooking appliance, including an upper cover and an inner pan, further including: the electrode is arranged on the upper cover, so that a high-voltage electric field can be formed between the electrode and the inner pot; and the boosting device is arranged in the upper cover, and the electrode and the inner pot are respectively connected with the boosting device and used for obtaining the high pressure required by sterilization.

The cooking utensil provided by the invention comprises an upper cover, an inner pot, an electrode and a boosting device, wherein the electrode is arranged on the upper cover, when the cooking utensil enters a reservation stage, the boosting device respectively connected with the electrode and the inner pot boosts the voltage at two ends of the electrode and the inner pot into high voltage, the high voltage between the electrode and the inner pot can sterilize the interior of the cooking utensil at high pressure, the high voltage ionizes a large amount of positive ions and negative ions in the cooking utensil, the positive ions and the negative ions are combined in a material liquid mixture of the cooking utensil, a large amount of energy is generated during combination, so that bacteria generated in the material liquid mixture at the reservation stage are killed by the energy released by the positive ions and the negative ions, the effect that bacteria cannot be bred in the cooking utensil at the reservation stage is achieved, and the food in the cooking utensil is still fresh and safe after a long-time reservation stage is finished, effectively improving the market competitiveness of the product.

In any of the above technical solutions, preferably, the method further includes: the on-off control switch is arranged between the boosting device and the electrode; the main control device is arranged in the upper cover, is connected with the on-off control switch and is used for controlling the on-off control switch to be switched on and off; and the voltage reducing device is arranged inside the upper cover and is connected with the main control device for reducing the voltage at two ends of the main control device.

In this technical scheme, cooking utensil still includes on-off control switch, master control set and step-down device, and on-off control switch sets up between electrode and the device that steps up, realizes the electrode process of stepping up through master control set control on-off control switch, and when on-off control switch closed, can promote voltage for the passageway between electrode and the device that steps up, and simultaneously after step-down device reduced the voltage at master control set both ends, master control set control on-off control switch disconnection.

In any of the above technical solutions, preferably, the method further includes: and the lifting device is arranged between the electrode and the upper cover and is connected with the main control device, and when sterilization is needed, the main control device controls the lifting device to drive the electrode to move towards the bottom surface of the inner pot.

In the technical scheme, the cooking utensil further comprises a lifting device, when the cooking utensil needs to be sterilized in the appointment stage, the main control device controls the lifting device to drive the electrode to move towards the bottom surface of the inner pot, and the electrode descends to a preset height, the preset height is the minimum distance which ensures that the electrode and the inner pot are not punctured, and the best sterilization effect can be ensured; and after the sterilization is finished, lifting the electrode by a preset height.

In any of the above technical solutions, preferably, the cover opening detection device is disposed inside the upper cover, connected to the main control device, and configured to send a prompt signal to the alarm device when detecting that the upper cover is not closed.

In this technical scheme, cooking utensil still includes the detection device that uncaps, when needs step up and disinfect, need judge whether cooking utensil's upper cover is tightly closed, explains that lifting voltage is safe this moment when the upper cover is tightly closed, can not take place voltage leakage, when detecting that the upper cover is not tightly closed, explains that lifting voltage is unsafe this moment, the problem of electric leakage probably takes place, then needs to send prompt signal to alarm device to remind the user to close the upper cover tightly.

In any of the above solutions, the high voltage required for sterilization preferably ranges from 1.5KV to 2.5 KV.

In any one of the above technical solutions, preferably, the alarm device includes an LED lamp and a speaker, and when the alarm device receives the prompt signal, the LED lamp and the speaker are turned on.

In this technical scheme, alarm device includes LED lamp and loudspeaker, and when detecting the upper cover and not tightly closing, alarm device need send cue signal to the user, and LED lamp and loudspeaker are opened simultaneously this moment and are reminded the user through vision and sense of hearing and need tightly close the upper cover.

In any of the above technical solutions, preferably, the electrode is detachably provided on the lifting device.

In this technical scheme, the electrode sets up on elevating gear for detachably, enters into the culinary art stage after at cooking utensil, can be because the boiling and splash food waste on the electrode, can influence subsequent bactericidal effect, just can directly dismantle the electrode from elevating gear this moment and wash or change, has promoted the life of product.

In any of the above technical solutions, preferably, the lifting device includes a telescopic lifting rod and a lifting motor.

In the technical scheme, the lifting device comprises a telescopic lifting rod and a lifting motor, the main control device controls the lifting motor to move, and the lifting motor drives the lifting rod to move up and down, so that the up-and-down movement of the electrode is realized.

In any of the above technical solutions, preferably, the number of the lifting rods is one or more; and/or the number of the lifting motors is one or more.

In this technical scheme, set up lifter and/or elevator motor's quantity into one or more, can increase the area of contact with the electrode for when promoting or descend the electrode, more steady safety.

In any of the above technical solutions, preferably, the cooking appliance is a pressure cooker, an electric stewpan, or a soymilk maker.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a flow chart of a control method of autoclaving according to an embodiment of the invention;

fig. 2 shows a further flowchart of a control method of autoclaving according to an embodiment of the invention;

fig. 3 shows a schematic view of a cooking appliance according to an embodiment of the invention.

Wherein, the correspondence between the reference numbers and the part names of fig. 1 to 3 is:

10 upper covers, 20 inner pots, 30 electrodes, 40 pressure boosting devices, 50 lifting devices, 60 cover opening detection devices, 70 main control devices and 80 pressure reduction devices.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

Fig. 1 to 3 are referenced to describe a control method of autoclaving and a cooking appliance according to some embodiments of the present invention.

As shown in fig. 1, a flowchart of a control method for autoclaving a cooking appliance according to an embodiment of the present invention includes:

step S102: receiving the reserved time length information and starting timing;

step S104: the voltage between an electrode and an inner pot in the cooking utensil is increased to a first preset voltage, and sterilization is started;

step S106: when the reserved time length is over, the voltage between the electrode and the inner pot is cut off;

step S108: the heating device is turned on and the cooking appliance enters the cooking stage.

In one embodiment of the present invention, preferably, as shown in fig. 2, a flowchart of a control method for autoclaving of cooking appliances according to one embodiment of the present invention includes:

step S202: receiving the reserved time length information and starting timing;

step S204: reducing the voltage at two ends of a main control module of the cooking appliance;

step S206: judging whether an upper cover of the cooking appliance is closed or not;

step S208: when the upper cover is not closed tightly, the alarm device is started;

step S210: when the upper cover is closed, the electrode is lowered by a preset height;

step S212: the voltage between an electrode and an inner pot in the cooking utensil is increased to a first preset voltage, and sterilization is started;

step S214: after the first preset time, disconnecting the voltage between the electrode and the inner pot for a second preset time;

step S216: judging whether the reserved time length is finished or not; when the reserved time length is not finished, returning to the step S212;

step S218, judging whether to cut off the voltage between the electrode and the inner pot when the preset time length is over;

step S220: when the voltage between the electrode and the inner pot is not disconnected, the voltage between the electrode and the inner pot is disconnected;

step S222: when the voltage between the electrode and the inner pot is cut off, lifting the electrode by a preset height;

step S224: starting a discharge device to discharge the voltage between the electrode and the inner pot;

step S226: the heating device is turned on and the cooking appliance enters the cooking stage.

In this embodiment, first, when the reservation information is received, a reservation stage is started, after the reservation duration information is received, the voltage across the main control module needs to be reduced to a low voltage value, and then whether the upper cover of the cooking appliance is closed needs to be judged. And then the voltage between the electrode and the inner pot in the cooking utensil is increased to a first preset voltage value, at the moment, the first preset voltage value is a high voltage value, the high voltage between the electrode and the inner pot can sterilize the interior of the cooking utensil at high pressure, after the voltage between the electrode and the inner pot is increased to the first preset voltage value, the first preset time is kept, after the first preset time is ended, the interior of the cooking utensil is nearly aseptic, the voltage between the electrode and the inner pot is disconnected, the second preset time is kept, the waste of energy is effectively saved, whether the reserved time is ended or not is judged, and if the reserved time is not ended, the voltage between the electrode and the inner pot is increased to the first preset voltage value to continue sterilization. When the preset time is reserved, judging whether the voltage between the electrode and the inner pot is disconnected or not; when the voltage between the electrode and the inner pot is not disconnected, the voltage between the electrode and the inner pot needs to be immediately disconnected, and the subsequent steps can be carried out; when the voltage between the electrode and the inner pot is disconnected, the step of lifting the electrode by the preset height is executed. Still need open bleeder mechanism before opening heating device, release away through bleeder mechanism the residual electric charge between the upper and lower plate electrode for the user can not take place to electrocute scheduling problem when subsequently operating cooking utensil, has promoted the security performance of product, at last after the completion of releasing, opens heating device, carries out predetermined culinary art step to cooking utensil.

In an embodiment of the present invention, preferably, the reducing the voltage across the main control module specifically includes: reducing the voltage at two ends of the main control module to between 5V and 36V; and converting alternating current at two ends of the main control module into direct current.

In this embodiment, the specific operation in the step of reducing the voltage across the main control module is as follows: the voltage at the two ends of the main control module is reduced to be between 5V and 36V, and alternating current at the two ends of the main control module is converted into direct current so as to meet the requirements of the main control module.

In one embodiment of the present invention, preferably, the first preset voltage is in a range of 1.5KV to 2.5 KV.

In this embodiment, the first preset voltage is set to a high voltage value between 1.5KV and 2.5KV, which can ensure effective sterilization and safety of the inside of the cooking appliance at the reserved stage.

As shown in fig. 3, according to a second object of the present invention, an embodiment of the present invention provides a cooking appliance, including an upper cover 10 and an inner pan 20, further including: the electrode 30 is arranged on the upper cover 10, the electrode 30 is arranged towards the inner pot 20, and a high-voltage electric field can be formed between the electrode 30 and the inner pot 20; and a pressure boosting device 40 arranged inside the upper cover 10, wherein the electrode and the inner pot are respectively connected with the pressure boosting device 40 and are used for obtaining high pressure required by sterilization.

The cooking appliance provided by the invention comprises an upper cover 10, an inner pot 20, an electrode 30 and a boosting device 40, wherein the electrode 30 is arranged on the upper cover 10, when the cooking appliance enters a reservation stage, the boosting device 40 respectively connected with the electrode 30 and the inner pot 20 boosts the voltage at two ends of the electrode 30 and the inner pot 20 into high voltage, the high voltage between the electrode 30 and the inner pot 20 can sterilize the interior of the cooking appliance at high pressure, a large amount of positive ions and negative ions are ionized in the cooking appliance at the high voltage, the positive ions and the negative ions are combined in a material liquid mixture of the cooking appliance, a large amount of energy is generated during combination, so that bacteria generated in the material liquid mixture at the reservation stage are killed by the energy released by the positive ions and the negative ions, the effect that the bacteria cannot be bred in the cooking appliance at the reservation stage is achieved, and after the long-time reservation stage is finished, the food in the cooking utensil is still fresh and safe, and the market competitiveness of the product is effectively improved.

In one embodiment of the present invention, preferably, the method further includes: an on-off control switch disposed between the booster device 40 and the electrode 30; the main control device 70 is arranged inside the upper cover 10, is connected with the on-off control switch, and is used for controlling the on-off of the on-off control switch; and the voltage reducing device 80 is arranged inside the upper cover 10, and the voltage reducing device 80 is connected with the main control device 70 and is used for reducing the voltage at two ends of the main control device 70.

In this embodiment, the cooking appliance further includes an on-off control switch, a main control device 70 and a voltage reduction device 80, the on-off control switch is disposed between the electrode 30 and the voltage boosting device 40, the on-off control switch is controlled by the main control device 70 to realize the voltage boosting process of the electrode, when the on-off control switch is closed, the voltage can be boosted for a path between the electrode and the voltage boosting device 40, and simultaneously, after the voltage reduction device 80 reduces the voltage at two ends of the main control device 70, the main control device 70 controls the on-off control switch to be turned off.

In one embodiment of the present invention, preferably, the method further includes: the lifting device 50 is arranged between the electrode 30 and the upper cover 10, the lifting device 50 is connected with the main control device 70, and when sterilization is needed, the main control device 70 controls the lifting device 50 to drive the electrode 30 to move towards the bottom surface of the inner pot 20.

In this embodiment, the cooking appliance further includes a lifting device 50, when the cooking appliance needs to be sterilized in the appointment stage, the main control device 70 controls the lifting device 50 to drive the electrode 30 to move towards the bottom surface of the inner pot 20, and the electrode is lowered by a preset height, and the preset height is the minimum distance which ensures that the electrode 30 and the inner pot 20 are not punctured, so that the best sterilization effect can be ensured; when the sterilization is finished, the electrode 30 is lifted by a predetermined height.

In an embodiment of the present invention, preferably, the lid opening detection device 60 is disposed inside the upper lid 10, and connected to the main control device 70, and is configured to send a prompt signal to the alarm device when detecting that the upper lid 10 is not closed.

In this embodiment, the cooking appliance further includes an open-lid detection device 60, when the pressure needs to be raised for sterilization, it needs to be determined whether the upper lid 10 of the cooking appliance is closed tightly, when the upper lid 10 is closed tightly, it indicates that the voltage is safe to raise, and no voltage leakage occurs, and when it is detected that the upper lid 10 is not closed tightly, it indicates that the voltage is unsafe to raise and a problem of electric leakage may occur, and a prompt signal needs to be sent to the alarm device to prompt a user to close the upper lid 10 tightly.

In one embodiment of the present invention, the high voltage required for sterilization preferably ranges between 1.5KV and 2.5 KV.

In one embodiment of the present invention, preferably, the alarm device includes an LED lamp and a speaker, and the LED lamp and the speaker are turned on when the alarm device receives the prompt signal.

In this embodiment, the alarm device includes an LED lamp and a speaker, and when it is detected that the upper cover 10 is not closed, the alarm device needs to send a prompt signal to the user, and at this time, the LED lamp and the speaker are turned on simultaneously to remind the user that the upper cover 10 needs to be closed visually and audibly.

In one embodiment of the present invention, it is preferable that the electrode 30 is detachably provided on the elevating device 50.

In this embodiment, the electrode 30 is detachably disposed on the lifting device 50, after the cooking appliance enters the cooking stage, food residues are splashed on the electrode 30 due to boiling, so that the subsequent sterilization effect is affected, at this time, the electrode 30 can be directly detached from the lifting device 50 for cleaning or replacement, and the service life of the product is prolonged.

In one embodiment of the present invention, the lifting device 50 preferably includes a retractable lifting rod and a lifting motor.

In this embodiment, the lifting device 50 includes a telescopic lifting rod and a lifting motor, and the main control device 70 controls the movement of the lifting motor, and the lifting motor drives the lifting rod to move up and down, so as to realize the up and down movement of the electrode 30.

In one embodiment of the present invention, preferably, the number of the lifting rods is one or more; and/or the number of the lifting motors is one or more.

In this embodiment, the number of the lift pins and/or the lift motor is set to one or more, the contact area with the electrode 30 can be increased, so that it is more stable and safe when the electrode 30 is lifted or lowered.

In one embodiment of the present invention, preferably, the cooking appliance is a pressure cooker, an electric stewpan, or a soymilk maker.

In the description of the present specification, the terms "connect", "mount", "fix", and the like are to be understood in a broad sense, for example, "connect" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A control method of high pressure sterilization is used for a cooking appliance, the cooking appliance comprises an upper cover, an inner pot and an electrode, the electrode is arranged on the upper cover, and the control method is characterized by comprising the following steps:

receiving the reserved time length information and starting timing;

the voltage between an electrode and an inner pot in the cooking appliance is increased to a first preset voltage, and sterilization is started;

when the reserved time length is over, the voltage between the electrode and the inner pot is cut off;

starting a heating device, and enabling the cooking appliance to enter a cooking stage;

the method further comprises the following steps after the step of increasing the voltage between the electrode and the inner pot in the cooking utensil to a first preset voltage:

after the first preset time, disconnecting the voltage between the electrode and the inner pot for a second preset time;

judging whether the reserved time length is finished or not;

and when the reserved time length is not finished, returning to the step of increasing the voltage between the electrode and the inner pot in the cooking appliance to a first preset voltage.

2. The method of controlling autoclaving according to claim 1,

before the step of raising the voltage between the electrode and the inner pot in the cooking utensil to a first preset voltage, the method further comprises the following steps: lowering the electrode by a preset height;

before the step of turning on the heating device, the method further comprises the following steps: and lifting the electrode by the preset height.

3. The method of controlling autoclaving as set forth in claim 2, further comprising:

when the preset time length is over, judging whether the voltage between the electrode and the inner pot is disconnected;

when the voltage between the electrode and the inner pot is not disconnected, the step of disconnecting the voltage between the electrode and the inner pot is executed;

when the voltage between the electrode and the inner pot is disconnected, the step of lifting the electrode by the preset height is executed.

4. The method of controlling autoclaving as recited in any one of claims 1 to 3, further comprising:

reducing the voltage at two ends of a main control module of the cooking appliance;

judging whether an upper cover of the cooking appliance is closed or not;

when the upper cover is closed, the step of descending the electrode by a preset height is executed;

and when the upper cover is not closed tightly, the alarm device is started.

5. The method of controlling autoclaving according to claim 4,

before the step of turning on the heating device, the method further comprises the following steps:

and starting a discharge device to discharge the voltage between the electrode and the inner pot.

6. The method of controlling autoclaving according to claim 5,

the step of reducing the voltage at the two ends of the main control module specifically comprises the following steps:

reducing the voltage at two ends of the main control module to be between 5V and 36V;

and converting the alternating current at the two ends of the main control module into direct current.

7. The method of controlling autoclaving according to claim 6,

the range of the first preset voltage is 1.5KV to 2.5 KV.

8. The utility model provides a cooking utensil, cooking utensil includes upper cover and interior pot, its characterized in that still includes:

the electrode is arranged on the upper cover and faces the inner pot, so that a high-voltage electric field can be formed between the electrode and the inner pot;

the pressure boosting device is arranged inside the upper cover, and the electrode and the inner pot are respectively connected with the pressure boosting device and used for obtaining high pressure required by sterilization;

the on-off control switch is arranged between the boosting device and the electrode;

and the main control device is arranged in the upper cover, is connected with the on-off control switch and is used for controlling the on-off control switch to be switched off and switched on.

9. The cooking appliance of claim 8, further comprising:

and the voltage reduction device is arranged inside the upper cover and connected with the main control device and used for reducing the voltage at two ends of the main control device.

10. The cooking appliance of claim 9, further comprising:

the lifting device is arranged between the electrode and the upper cover and connected with the main control device, and when sterilization is needed, the main control device controls the lifting device to drive the electrode to move towards the bottom surface of the inner pot.

11. The cooking appliance of claim 9, further comprising:

and the cover opening detection device is arranged in the upper cover, is connected with the main control device and is used for sending a prompt signal to the alarm device when detecting that the upper cover is not closed.

12. The cooking appliance of claim 10, further comprising:

13. The cooking appliance of claim 12,

the range of the high voltage required for sterilization is 1.5KV to 2.5 KV.

14. The cooking appliance of claim 13,

the alarm device comprises an LED lamp and a loudspeaker, and when the alarm device receives the prompt signal, the LED lamp and the loudspeaker are started.

15. The cooking appliance of claim 14,

the electrode is detachably arranged on the lifting device.

16. The cooking appliance of claim 15,

the lifting device comprises a telescopic lifting rod and a lifting motor.

17. The cooking appliance of claim 16,

the number of the lifting rods is one or more; and/or

The number of the lifting motors is one or more.

18. The cooking appliance according to any one of claims 13 to 17,

the cooking utensil is a pressure cooker, an electric stewpan or a soybean milk machine.