CN110870658A

CN110870658A - Cooking appliance control method and cooking appliance

Info

Publication number: CN110870658A
Application number: CN201811012288.9A
Authority: CN
Inventors: 任祥喜; 王志锋; 黄庶锋; 罗飞龙; 刘文华; 刘化勇; 瞿月红; 佘艳
Original assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Priority date: 2018-08-31
Filing date: 2018-08-31
Publication date: 2020-03-10
Anticipated expiration: 2038-08-31
Also published as: CN110870658B

Abstract

The invention discloses a cooking appliance and a control method thereof. The cooking utensil comprises an inner pot, a heating device for heating the inner pot, a pot body for bearing the inner pot, an air suction opening and a pressure relief hole, and the control method of the cooking utensil comprises the following steps: in the cooking mode, when food boils, detecting an overflow signal; and if an overflow signal is detected, opening the air suction opening to suck vacuum to the inner pot, and controlling the pressure relief hole to be closed to stop relieving pressure to the inner pot. The control method of the cooking utensil can effectively prevent bubbles and food residues from overflowing and avoid the food residues from blocking the air suction opening and the pressure relief hole.

Description

Cooking appliance control method and cooking appliance

Technical Field

The invention relates to the technical field of household appliances, in particular to a cooking appliance and a control method thereof.

Background

Under the culinary art mode, the cooking utensil of negative pressure low temperature boiling reduces under the negative pressure effect boiling, and the boiling can be more violent than conventional cooking utensil, and the bubble that the boiling produced carries food waste and blocks up with the extraction opening and the pressure release hole of extraction vacuum easily in culinary art process, not only is unfavorable for the extraction vacuum, and the pressure release hole still can produce the malleation when blockking up moreover, has the risk of unusually uncapping, influences cooking utensil's use and experiences and there is the potential safety hazard.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

To this end, a first object of the present invention is to propose a control method of a cooking appliance. The method can effectively prevent the overflow of air bubbles and food residues and avoid the blockage of the air suction port and the pressure relief hole by the food residues.

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

A third object of the invention is to propose a non-transitory computer-readable storage medium.

In order to achieve the above object, an embodiment of a first aspect of the present invention discloses a control method of a cooking appliance, where the cooking appliance includes an inner pot, a heating device for heating the inner pot, a pot body for carrying the inner pot, an air suction opening, and a pressure relief opening, the method includes: in the cooking mode, when food boils, detecting an overflow signal; and if an overflow signal is detected, closing the air suction opening to stop vacuum suction of the inner pot, and controlling the opening of the pressure relief hole to relieve pressure of the inner pot.

According to the control method of the cooking utensil provided by the embodiment of the invention, when the overflow signal is detected, the air exhaust port is controlled to be closed to stop vacuumizing, the pressure relief hole is controlled to be opened to relieve pressure, negative pressure in the cooking utensil is suddenly changed into external pressure, and the air bubbles are broken under the action of pressure difference, so that the air bubbles and food residues can be effectively prevented from overflowing, and the blockage of the air exhaust port and the pressure relief hole by the food residues is avoided.

Judging whether the overflow signal disappears or not; if the overflow signal disappears, the air suction opening is opened after first preset time is delayed to suck vacuum for the inner pot, and the pressure relief hole is controlled to be closed to stop relieving pressure for the inner pot.

In some examples, further comprising: obtaining the first predetermined time corresponding to the cooking function according to the cooking function selected in the cooking mode.

In some examples, if the overflow signal is detected, closing the air suction port to stop drawing vacuum to the inner pot and controlling the pressure relief hole to be opened to relieve pressure to the inner pot includes: closing the air pumping port to stop pumping vacuum to the inner pot; and controlling the pressure relief hole to open for a second preset time.

In some examples, the second predetermined time is 0-30 seconds.

Embodiments of a second aspect of the invention disclose a cooking appliance comprising: the inner pot and a heating device for heating the inner pot; the pot body is used for bearing the inner pot; the pot cover is connected with the pot body and is used for sealing the inner pot or the pot body; the inner pot is provided with an air suction hole for sucking vacuum to the inner pot and a pressure relief hole for relieving pressure to the inner pot; and the controller is used for detecting an overflow signal when food boils in a cooking mode, closing the air suction opening to stop vacuumizing the inner pot if the overflow signal is detected, and controlling the pressure relief hole to be opened to relieve pressure of the inner pot.

According to the cooking utensil disclosed by the embodiment of the invention, when the overflow signal is detected, the air exhaust port is controlled to be closed to stop vacuumizing, the pressure relief hole is controlled to be opened to relieve pressure, negative pressure in the cooking utensil is suddenly changed into external pressure, and the air bubbles are broken under the action of pressure difference, so that the air bubbles and food residues can be effectively prevented from overflowing, the air exhaust port and the pressure relief hole are prevented from being blocked by the food residues, and the quality of the cooking utensil is improved.

In some examples, the controller is further configured to determine whether the overflow signal disappears, and if the overflow signal disappears, open the air suction port to evacuate the inner pot after delaying for a first predetermined time, and control the pressure relief hole to close to stop relieving pressure to the inner pot.

In some examples, the controller is further configured to derive the first predetermined time corresponding to the cooking function according to the cooking function selected in the cooking mode.

In some examples, when the overflow signal is detected, the air suction port is closed to stop vacuum pumping from the inner pot, and the pressure relief hole is controlled to be opened to relieve pressure from the inner pot, the controller is specifically configured to close the air suction port to stop vacuum pumping from the inner pot, and control the pressure relief hole to be opened for a second predetermined time.

In some examples, the second predetermined time is 0-30 seconds.

In some examples, the cooking appliance includes an electric rice cooker, and an electric pressure cooker.

To achieve the above object, an embodiment of a third aspect of the present invention discloses a non-transitory computer-readable storage medium on which a control program of a cooking appliance is stored, the program implementing the control method of the cooking appliance when executed by a processor.

Drawings

Fig. 1 is a schematic structural view of a cooking appliance according to an embodiment of the present invention;

fig. 2 is a flowchart of a control method of a cooking appliance according to an embodiment of the present invention;

fig. 3 is a flowchart of a control method of a cooking appliance according to another embodiment of the present invention;

fig. 4 is a control schematic diagram of a control method of a cooking appliance according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

A control method of a cooking appliance and the cooking appliance according to an embodiment of the present invention are described below with reference to the accompanying drawings.

First, in a cooking mode, the cooking appliance of the embodiment of the present invention can perform negative pressure cooking on food, that is: the inner pot is in a negative pressure state to cook food.

Specifically, as shown in fig. 1, the cooking appliance 200 includes: an inner pot 210, a heating device 220, a pot body 230, a pot cover 240, an air pressure adjusting device 250 and a controller 260.

Wherein, the inner pot 210 is used for containing food to be cooked. The heating means 220 is used to heat the inner pot 210. The pot body 230 is used for carrying the inner pot 210. Pot cover 240 is connected to pot body 230, and pot body 240 is used to enclose inner pot 210 or pot body 230. The air pressure adjusting means 250 is provided on the lid 240 for adjusting the air pressure of the inner pot 210. The controller 260 is configured to control the heating device 220 to heat the inner pot 210 after entering the cooking mode, and control the air pressure adjusting device 250 to draw a vacuum to the inner pot 210, so that the inner pot 210 cooks food under negative pressure.

The air pressure adjusting device 250 includes, but is not limited to, an air pump 251 and a valve 252, when negative pressure is required in the inner pan 210, the valve 250 can be opened, air is pumped from the inner pan 210 by the air pump 250, a certain vacuum degree is generated in the inner pan 210, and negative pressure is generated in the inner pan 210, that is: the air pressure in the inner pot 210 is less than the outside air pressure. In addition, when positive pressure is needed in the inner pan 210, the valve 252 can be opened, air is input into the inner pan 210 through the air pump 250, so that the pressure in the inner pan 210 is increased, and positive pressure is generated in the inner pan 210, that is: the air pressure inside the inner pot 210 is greater than the outside air pressure.

It is understood that the manner of generating the positive pressure in the inner pot 210 is not limited to the manner realized by the air pressure adjusting device 250, and the positive pressure may be generated by the water vapor after the inner pot is heated, similar to the electric pressure cooker in the related art.

The cooking appliance 200 further comprises an exhaust valve 270, and the exhaust valve 270 is used to open when the air needs to be exhausted so as to exhaust the air pressure in the inner pot 210.

When the cooking appliance is in a cooking mode, the heating device is started to heat the inner pot, and the air pressure adjusting device is controlled to extract vacuum from the inner pot so that the inner pot cooks food under negative pressure.

Specifically, when the cooking electric appliance works, the cooking electric appliance enters a cooking mode including a cooking mode, a heat preservation mode, a pressure maintaining mode and other modes, a heating device is started, and the heating device is controlled to run at rated power so as to heat the inner pot at an accelerated speed. And (4) vacuumizing the inner pot, and stopping vacuumizing the inner pot until the vacuum degree of the inner pot reaches a preset vacuum degree. Wherein the predetermined degree of vacuum is, for example, greater than or equal to 50 Kpa.

During cooking, the temperature distribution within the cooking chamber is not uniform. Since the heat output from the heating device in the cooking appliance is gradually transferred from the bottom to the top of the cooking material, the temperature of the cooking cavity assumes a layered state. Specifically, since the bottom of the cooking chamber is in direct contact with the heater, the temperature at the bottom of the cooking chamber is the highest, the temperature at the middle is the next lowest, and the temperature at the top of the cooked food is the lowest.

In the embodiment of the invention, because the temperature in the cooking cavity is layered, the bottom of the cooking cavity reaches the boiling point firstly to generate bubbles, and the generated bubbles are used for stirring the cooking food. But since the temperatures of the middle and top portions are now lower than the bottom portion, the temperatures of the middle and top portions do not reach boiling points and the entire cooking chamber does not really go to boiling. In other words, the bubbles generated in the embodiment of the present invention are generated when the bottom of the cooking cavity reaches the boiling point.

The gelatinization temperature of the rice grains is usually about 62 ℃, the rice grains are easy to be bonded into a mass after gelatinization and block heat convection, and in order to enable the rice grains to generate bubbles before gelatinization, the vacuum of the inner pot is extracted to reduce the boiling point, so that the rice grains generate bubbles as far as possible before the gelatinization temperature, a dense bubble channel is formed, and the convection heat transfer is enhanced. Vacuumizing from water absorption to heating, raising temperature, maintaining the vacuum degree above 50Kpa (boiling point 80 ℃), and stopping vacuumizing when reaching the stable boiling point 80 ℃. In the process of heating rice, the rice grains are bonded into lumps, and the rice is heated unevenly, but in the process of heating rice, the rice grains generate bubbles before being agglomerated, so that more continuous bubble channels distributed more evenly are formed, convection heat transfer is enhanced, the rice is heated evenly in the whole process, and the quality of the rice is improved.

It is understood that the vacuum level of 50Kpa is merely exemplary and may be appropriately adjusted according to specific requirements.

In addition, the inner surface of the inner pot in the embodiment of the invention is sprayed with the non-stick coating, so that bubbles generated at the bottom of the pot can slide and separate quickly, more bubble channels can be formed quickly, and the bubbles can act on the cooked food more uniformly.

This cooking utensil can make interior pot form the negative pressure through atmospheric pressure adjusting device, because the boiling point reduces, and the bubble is produced promptly at the bottom of a boiler before the rice grain gelatinization, forms dense bubble passageway, and intensive convection heat transfer to make the whole thermally equivalent of rice, finally promote the quality of rice.

Because during the negative pressure culinary art, the boiling point reduces, and the boiling can be more violent than conventional cooking utensil, and the bubble that the boiling produced probably carries food waste and will extract vacuous extraction opening and pressure release hole jam in culinary art process, will influence the extraction vacuum, still can produce the malleation when the pressure release hole is blockked up moreover, has the risk of uncapping abnormally.

Accordingly, an embodiment of the present invention discloses a control method of a cooking appliance.

The specific structure of the cooking appliance is shown in fig. 1. In addition, the cooking appliance further comprises an air suction opening and a pressure relief opening, wherein the air pressure adjusting device 250 is used for controlling the opening and closing of the air suction opening, and the exhaust valve 270 is used for controlling the opening and closing of the pressure relief opening.

As shown in fig. 2, in conjunction with fig. 3 and 4, a method for controlling a cooking appliance includes:

s201: in the cooking mode, an overflow signal is detected when the food boils.

Wherein, whether the overflow phenomenon occurs can be detected by the sensor.

S202: if an overflow signal is detected, the air suction opening is closed to stop vacuum suction of the inner pot, and the pressure relief hole is controlled to be opened to relieve pressure of the inner pot.

Specifically, in the boiling stage, when overflow detection sensors such as an overflow prevention electrode or an infrared sensor detect overflow signals, the electromagnet works to drive the pressure relief hole to be suddenly opened, the pressure in the cooking appliance is suddenly changed from negative pressure to external atmospheric pressure, bubbles in the cooking appliance are broken under the action of pressure difference, and the electromagnetic valve and the vacuum pump (air pump) stop working and do not extract vacuum when the pressure relief hole is opened. The time from negative pressure to external pressure in the cooking utensil in the sudden pressure relief process is t.

In a specific example of the present invention, the method further includes: and judging whether the overflow signal disappears. If the overflow signal disappears, the air suction opening is opened after the first preset time is delayed to suck vacuum for the inner pot, and the pressure relief hole is controlled to be closed to stop relieving pressure for the inner pot.

Namely: when the overflow signal disappears, the electromagnet drives the pressure relief hole to be closed, if the boiling stage is not finished, the electromagnetic valve and the vacuum pump start to work to extract vacuum from the cooking appliance, meanwhile, the overflow signal in the cooking appliance is detected, and the circulation work is carried out until the boiling stage is finished.

In a specific example, the method for controlling a cooking appliance further includes: obtaining the first predetermined time T corresponding to the cooking function according to the cooking function selected in the cooking mode. For example: the value range of the easily spilled food such as porridge cooking is as follows: 3s < T <30s, if for food which is not easy to overflow, the value range of T is as follows: 0< T <15 s.

Further, if an overflow signal is detected, the air suction port is closed to stop vacuum suction to the inner pot, and the pressure relief hole is controlled to be opened to relieve pressure to the inner pot, including: closing the air pumping port to stop pumping vacuum to the inner pot; and controlling the pressure relief hole to open for a second preset time t. Wherein the second predetermined time is 0-30 seconds.

That is, after the overflow signal is detected, the electromagnetic valve and the vacuum pump do not work any more, at the moment, the electromagnet works, the pressure relief valve is opened under the action of the electromagnet, the negative pressure in the cooking utensil is suddenly changed into the external pressure, and the bubbles are broken under the action of the instant pressure difference; when the air bubble disappears, the air leakage port is closed, the electromagnetic valve and the vacuum pump work, and meanwhile, an overflow signal is detected until the end is reached; protecting the time t required for the air pressure to be released to the external pressure from the negative pressure after the pressure release hole of the negative pressure low-temperature boiling cooking utensil is opened, wherein the value range of t is 0s < t <30 s; when the overflow signal disappears, the pressure relief hole is not immediately closed and vacuum is extracted, and the phenomenon of reboiling immediately is caused if the thermal inertia immediately closes the pressure relief hole and vacuum is extracted, so that the pressure relief hole is closed and vacuum is extracted after the time T, as shown in FIG. 2, T is T4-T3; for time T, the value ranges of different cooking functions are different, and the value ranges of foods which are easy to overflow such as porridge and the like are as follows: 3s < T <30s, if for food which is not easy to overflow, the value range of T is as follows: 0< T <15 s; after the overflow signal disappears in the boiling stage, the electromagnetic valve and the vacuum pump continuously perform the vacuum pumping operation because the rising speed of the air pressure in the cooking utensil is faster.

As shown in fig. 1, an embodiment of the present invention discloses a cooking appliance, including: the cooker comprises an inner pot 210, a heating device 220, a pot body 230, a pot cover 240, an air suction opening for sucking vacuum from the inner pot, a pressure relief hole for relieving pressure from the inner pot, and a controller 260, wherein an air pressure adjusting device 250 is used for controlling the opening and closing of the air suction opening. The vent valve 270 is used to control the opening and closing of the pressure relief vent.

The controller 260 is configured to detect an overflow signal when food boils in a cooking mode, and if the overflow signal is detected, close the air suction port to stop vacuum suction of the inner pot, and control the opening of the pressure relief hole to relieve pressure of the inner pot.

Further, the controller 260 is further configured to determine whether the overflow signal disappears, and if the overflow signal disappears, open the air pumping hole after delaying for a first predetermined time to pump vacuum to the inner pot, and control the pressure relief hole to close to stop releasing pressure to the inner pot.

In an embodiment of the present invention, the controller 260 is further configured to obtain the first predetermined time corresponding to the cooking function according to the cooking function selected in the cooking mode.

In an embodiment of the present invention, when the air suction port is closed to stop vacuum suction to the inner pot and the pressure relief hole is controlled to be opened to relieve pressure to the inner pot if the overflow signal is detected, the controller 260 specifically closes the air suction port to stop vacuum suction to the inner pot and controls the pressure relief hole to be opened for a second predetermined time.

Wherein the second predetermined time is, but not limited to, 0-30 seconds.

In one embodiment of the present invention, the cooking appliance includes, but is not limited to, an electric rice cooker, and an electric pressure cooker.

It should be noted that the specific working process of the cooking appliance in the embodiment of the present invention is similar to the specific implementation manner of the control method of the cooking appliance in the embodiment of the present invention, and please refer to the description of the method part specifically, and no further description is given for reducing redundancy.

In addition, other structures and functions of the cooking appliance according to the embodiment of the present invention are known to those skilled in the art and will not be described herein.

Finally, an embodiment of the present invention also provides a non-transitory computer-readable storage medium, on which a cooking control program of a cooking appliance is stored, where the program is executed by a processor to implement the cooking control method of the cooking appliance of the foregoing embodiment.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.

The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.

It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.

In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.

The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. 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 present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A control method of a cooking appliance is characterized in that the cooking appliance comprises an inner pot, a heating device for heating the inner pot, a pot body for bearing the inner pot, an air suction opening and a pressure relief hole, and the method comprises the following steps:

in the cooking mode, when food boils, detecting an overflow signal;

and if an overflow signal is detected, closing the air suction opening to stop vacuum suction of the inner pot, and controlling the opening of the pressure relief hole to relieve pressure of the inner pot.

2. The method of controlling a cooking appliance according to claim 1, further comprising:

judging whether the overflow signal disappears or not;

if the overflow signal disappears, the air suction opening is opened after first preset time is delayed to suck vacuum for the inner pot, and the pressure relief hole is controlled to be closed to stop relieving pressure for the inner pot.

3. The method of controlling a cooking appliance according to claim 2, further comprising:

obtaining the first predetermined time corresponding to the cooking function according to the cooking function selected in the cooking mode.

4. The method for controlling a cooking appliance according to claim 1, wherein if the overflow signal is detected, closing the suction opening to stop the vacuum suction to the inner pot and controlling the pressure release hole to open to release the pressure to the inner pot comprises:

closing the air pumping port to stop pumping vacuum to the inner pot;

and controlling the pressure relief hole to open for a second preset time.

5. The method of claim 4, wherein the second predetermined time is 0-30 seconds.

6. A cooking appliance, comprising:

the inner pot and a heating device for heating the inner pot;

the pot body is used for bearing the inner pot;

the pot cover is connected with the pot body and is used for sealing the inner pot or the pot body;

the inner pot is provided with an air suction hole for sucking vacuum to the inner pot and a pressure relief hole for relieving pressure to the inner pot;

and the controller is used for detecting an overflow signal when food boils in a cooking mode, closing the air suction opening to stop vacuumizing the inner pot if the overflow signal is detected, and controlling the pressure relief hole to be opened to relieve pressure of the inner pot.

7. The cooking appliance according to claim 6, wherein the controller is further configured to determine whether the overflow signal disappears, and if the overflow signal disappears, delay a first predetermined time and open the suction opening to draw a vacuum in the inner pot, and control the pressure relief hole to close to stop the pressure relief in the inner pot.

8. The cooking appliance of claim 7, wherein the controller is further configured to derive the first predetermined time corresponding to the cooking function based on the cooking function selected in the cooking mode.

9. The cooking appliance according to claim 6, wherein if the overflow signal is detected, the controller is configured to close the air exhaust opening to stop vacuum pumping to the inner pot, and control the pressure relief hole to open to relieve pressure to the inner pot, and the controller is configured to close the air exhaust opening to stop vacuum pumping to the inner pot, and control the pressure relief hole to open for a second predetermined time.

10. The cooking appliance of claim 9, wherein the second predetermined time is 0-30 seconds.

11. The cooking appliance according to any one of claims 6 to 10, wherein the cooking appliance comprises an electric rice cooker, an electric rice cooker and an electric pressure cooker.

12. A non-transitory computer-readable storage medium, on which a control program of a cooking appliance is stored, the program implementing the control method of the cooking appliance according to any one of claims 1 to 5 when executed by a processor.