CN113040598A

CN113040598A - Cooking control method and device

Info

Publication number: CN113040598A
Application number: CN201911383133.0A
Authority: CN
Inventors: 刘礼发; 曾彬; 史马杰
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Current assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2021-06-29
Anticipated expiration: 2039-12-27
Also published as: CN113040598B

Abstract

The invention discloses a cooking control method and device. Wherein, the method comprises the following steps: acquiring first cooking power of a cooking appliance, and detecting a power grid voltage; under the condition that the first cooking power is determined to be smaller than or equal to the preset power, whether the first cooking power is adjusted or not is determined on the basis of the power grid voltage, so that the difference value of the hard conducting voltage of the insulated gate bipolar transistor before and after the first cooking power is adjusted is within the preset range; and controlling the cooking appliance to operate according to the first cooking power or the adjusted second cooking power. The invention solves the technical problem of larger temperature rise of the IGBT caused by unstable power grid voltage under the same power in the related technology.

Description

Cooking control method and device

Technical Field

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

Background

An electromagnetic Heating (IH) cooking appliance has the advantages of high power and high cooking speed, and is selected by more and more customers. In order to realize the use environment with different voltages in multiple regions, the voltage setting range is relatively wide, for example, the nominal 220V cooking utensil, the voltage range may be 145V and 270V. Below 145V or above 270V, the cooking appliance stops working. Within the voltage range, different power control can be realized by adjusting the on-time of an Insulated Gate Bipolar Transistor (IGBT), i.e., the on-pulse width (PPG).

When the IH product is heated, the IH product is mainly divided into two processes of charging and discharging: in the charging stage, the IGBT is conducted to charge the coil and the resonant capacitor, and when the highest point is reached, the IGBT is closed, and the coil and the resonant capacitor are discharged. In the discharging stage: the IGBT is closed, and after the voltage drops to zero, the IGBT is opened for the next conduction period, namely the next charging stage. If the coil inductance and the resonant capacitance are properly matched, the IGBT turn-on waveform is a smooth sine wave at its highest power state, which may be 2000W, for example, as shown in fig. 1 a. As can be seen from the figure, after the charging is completed, the next charging process is started after the discharging reaches the zero point. The off time and the on time are identical.

However, if the grid voltage is unstable and fluctuates, for example, the voltage rises, in order to ensure power consistency, the on-time of the IGBT is reduced under the same power, so that the IGBT does not discharge and turns on the charging process of the next period, and further heat generated by the IGBT is accumulated, and the temperature rise is large.

Aiming at the problem that the IGBT temperature rise is large due to unstable power grid voltage under the same power in the related technology, an effective solution is not provided at present.

Disclosure of Invention

The embodiment of the invention provides a cooking control method and device, which at least solve the technical problem that the IGBT temperature rise is large due to unstable power grid voltage under the same power in the related technology.

According to an aspect of an embodiment of the present invention, there is provided a cooking control method including: acquiring first cooking power of a cooking appliance, and detecting a power grid voltage; under the condition that the first cooking power is determined to be smaller than or equal to the preset power, whether the first cooking power is adjusted or not is determined on the basis of the power grid voltage, so that the difference value of the hard conducting voltage of the insulated gate bipolar transistor before and after the first cooking power is adjusted is within the preset range; and controlling the cooking appliance to operate according to the first cooking power or the adjusted second cooking power.

In the embodiment of the invention, under the condition of low-voltage cooking power, the cooking power is adjusted through the voltage of the power grid, so that the difference value of the hard turn-on voltage of the IGBT before and after the cooking power is adjusted is in a preset range, the purposes of meeting the use in a wide voltage range and ensuring the temperature rise of the IGBT are achieved, the technical effect of reducing the influence of the voltage of the power grid on the temperature rise of the IGBT is realized, and the technical problem of larger temperature rise of the IGBT caused by unstable voltage of the power grid under the same power in the related technology is further solved.

Further, determining whether to adjust the first cooking power based on the grid voltage includes: judging whether the voltage of the power grid is greater than a preset voltage or not; if the voltage of the power grid is greater than the preset voltage, adjusting the first cooking power to be a second cooking power, wherein the second cooking power is greater than the first cooking power; and if the power grid voltage is less than or equal to the preset voltage, keeping the first cooking power unchanged. Under the condition of grid voltage increase, through increase culinary art power for PPG value increase, hard break-over voltage reduces, ensures that IGBT temperature rise changes little, prevents to damage.

Further, adjusting the first cooking power to the second cooking power includes: acquiring a hard on voltage corresponding to the first cooking power and a preset voltage; and acquiring second cooking power corresponding to the power grid voltage and the hard breakover voltage. The cooking power is adjusted according to the corresponding relation of the power grid voltage, the cooking power and the hard conduction voltage, so that the adjustment accuracy is improved, and the temperature rise of the IGBT is ensured to be basically kept unchanged.

Further, controlling the cooking appliance to operate according to the first cooking power or the adjusted second cooking power includes: controlling the cooking appliance to continuously operate according to the first cooking power; or controlling the cooking appliance to operate intermittently according to the second cooking power. By adopting high-power intermittent operation, which is equivalent to low-power continuous operation, the accurate control of the cooking process is realized, and the influence of power change on the cooking effect is avoided.

Further, the controlling of the cooking appliance to intermittently operate at the second cooking power includes: acquiring the ratio of the first cooking power to the second cooking power; determining an operating time and a stop time of the operating cycle based on the ratio; and controlling the cooking appliance to operate according to the second cooking power and the operation period. The running time and the stopping time of the intermittent operation are determined by adjusting the cooking power before and after the adjustment, so that the PPG value is increased, and the hard on voltage delta V is reduced.

Further, detecting the grid voltage comprises: the input voltage of the cooking utensil is detected through the voltage detection circuit, and the power grid voltage is obtained. The voltage detection circuit arranged on the cooking appliance detects the voltage of the power grid, other detection circuits do not need to be additionally arranged, and the effect of reducing the cost of the cooking appliance while reducing the influence of the voltage of the power grid on the temperature rise of the IGBT is achieved.

Further, the cooking appliance is an electric pressure cooker.

Further, the preset range is 0-20V.

Further, the hard conduction voltage is the same before and after the first cooking power adjustment.

According to another aspect of the embodiments of the present invention, there is also provided a cooking control apparatus including: the acquisition module is used for acquiring first cooking power of the cooking appliance and detecting the voltage of a power grid; the adjusting module is used for determining whether the first cooking power is adjusted or not based on the power grid voltage under the condition that the first cooking power is determined to be smaller than or equal to the preset power, so that the difference value of the hard conducting voltage of the insulated gate bipolar transistor before and after the first cooking power is adjusted is within the preset range; and the control module is used for controlling the cooking appliance to operate according to the first cooking power or the adjusted second cooking power.

Further, the adjustment module includes: the judging unit is used for judging whether the voltage of the power grid is greater than a preset voltage or not; the adjusting unit is used for adjusting the first cooking power to a second cooking power if the grid voltage is greater than a preset voltage, wherein the second cooking power is greater than the first cooking power; and a maintaining unit for maintaining the first cooking power unchanged if the grid voltage is less than or equal to a preset voltage.

Further, the adjusting unit is also used for obtaining a hard turn-on voltage corresponding to the first cooking power and the preset voltage, and obtaining a second cooking power corresponding to the grid voltage and the hard turn-on voltage.

Further, the control module is also used for controlling the cooking appliance to continuously operate according to the first cooking power; or controlling the cooking appliance to operate intermittently according to the second cooking power.

Further, the control module includes: an obtaining unit for obtaining a ratio of the first cooking power and the second cooking power; a determination unit for determining an operation time and a stop time of the operation cycle based on the ratio; and the control unit is used for controlling the cooking appliance to operate according to the second cooking power and the operation period.

Further, the acquisition module includes: and the detection unit is used for detecting the input voltage of the cooking appliance through the voltage detection circuit to obtain the power grid voltage.

According to another aspect of the embodiments of the present invention, there is also provided a storage medium including a stored program, wherein the program executes the cooking control method described above.

According to another aspect of the embodiments of the present invention, there is also provided a processor for executing a program, wherein the program executes the cooking control method.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1a is a schematic diagram of a waveform for normal turn-on of an IGBT according to the prior art;

FIG. 1b is a schematic diagram of waveforms for hard turn-on of an IGBT according to an embodiment of the present invention;

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

FIG. 3 is a flow chart of an alternative cooking control method according to an embodiment of the present invention; and

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

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In accordance with an embodiment of the present invention, there is provided a cooking control method, it should be noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than here.

Fig. 2 is a flowchart of a cooking control method according to an embodiment of the present invention, as shown in fig. 2, the method including the steps of:

step S202, acquiring first cooking power of the cooking appliance, and detecting the grid voltage.

Specifically, the cooking appliance may be an IH product, such as an electric pressure cooker and an electric cooker, and in the embodiment of the present invention, an electric pressure cooker is taken as an example for description.

In an alternative scheme, when a user uses the electric pressure cooker to cook, the user selects cooking functions, and some cooking functions may use the lowest power by default in order to achieve good taste of food. Additionally, the user may adjust the default cooking function as desired, for example, the user will typically use the lowest power when the user wishes to eat a softer, waxy porridge. For example, the minimum power may be 800W.

Because the power grid voltage has a large influence on the IGBT temperature rise, in order to ensure the IGBT temperature rise, the electric pressure cooker can detect the power grid voltage in real time through the detection circuit after the cooking operation is started.

And step S204, under the condition that the first cooking power is determined to be smaller than or equal to the preset power, whether the first cooking power is adjusted or not is determined based on the power grid voltage, so that the difference value of the hard conducting voltage of the insulated gate bipolar transistor before and after the first cooking power is adjusted is within the preset range.

The hard turn-on may refer to a case where the IGBT is turned on when the superimposed voltage of the collector thereof is greater than 0V, and the hard turn-on voltage may refer to the superimposed voltage of the collector thereof when the IGBT is in the hard turn-on.

When the same product, the coil panel and the resonance parameters are fixed, if lower power is needed, such as 1000W, only the IGBT conduction pulse width (PPG value) needs to be reduced, the conduction time is reduced, the required low power can be obtained, and at the moment, a proper PPG value exists. When the PPG value decreases, it may result in the discharge not being completely completed, i.e. the voltage is not put to zero, and the next charging process starts again, as shown in fig. 1 b. As can be seen from the waveform, a break point, in the figure, Δ V, occurs in the discharge process. At this time, the IGBT works in a hard on state, and Δ V is a hard on voltage of the IGBT, or referred to as an IGBT hard on voltage. The higher the hard on voltage is, the higher the junction temperature of the IGBT is, the high efficiency loss is, the body temperature is raised, and the IGBT is easy to damage.

In order to prevent the hard turn-on voltage of the IGBT from being too high, a minimum power protection value is generally used. I.e. the lowest power at which the product can be continuously heated. For example, the maximum power of the product is 2000W, and the minimum power is 800W. And the heating power less than or equal to 800W can only adopt an equivalent mode of intermittent heating.

The PPG value is fixed for the same product at the same power. When the grid voltage rises, the hard turn-on voltage Δ V also becomes large. If the PPG value under the normal voltage is adopted to work, the hard breakover voltage delta V of the IGBT is large, and the temperature is increased. For example, in one experiment, the following data were tested: voltage 220V, power 2000W, waveform is smooth sine wave, delta V is 0, IGBT temperature rise 60 ℃; the voltage is 260V, the power is 2000W, the waveform is a folding wave, the hard conduction voltage delta V is 60V, the IGBT is in hard conduction, and the temperature rises by 78 ℃; the voltage is 260V, the power is 900W, the waveform is a broken wave, the hard conduction voltage delta V is 177V, the IGBT is in hard conduction, and the temperature rise is 93 ℃.

Specifically, the preset power may be a power value for determining that the electric pressure cooker needs to work at low power, and a maximum power value may be set for different electric pressure cookers, for example, if the minimum power of different electric pressure cookers is 800W, the preset power may also be set to 800W. The cooking power in the electric pressure cooker is usually a fixed value and cannot be changed continuously, and the hard conduction voltages of the IGBTs before and after adjustment may not be the same, so that a preset range can be set in advance according to the cooking power of the electric pressure cooker, the hard conduction voltages of the IGBTs before and after adjustment are ensured to be close, the pressure difference is small, and the temperature rise of the IGBTs is ensured not to change greatly, for example, the preset range can be 0-20V.

In an optional scheme, under the same power, the higher the voltage is, the larger the IGBT hard-on voltage is, the higher the corresponding temperature rise is, so that after the grid voltage is detected, whether the lowest power needs to be adjusted can be determined according to the grid voltage, and if the grid voltage is higher, the temperature rise under the current power is determined to be higher, so that the heat loss of the IGBT becomes large and the IGBT is easy to damage, and therefore the lowest power needs to be adjusted; and if the voltage of the power grid is normal voltage or within the normal voltage fluctuation range, determining that the temperature rise under the current power is low, and according with the working temperature range of the IGBT, the lowest power does not need to be adjusted.

And step S206, controlling the cooking appliance to operate according to the first cooking power or the adjusted second cooking power.

In an optional scheme, if the power does not need to be adjusted according to the voltage of the power grid, the electric pressure cooker can continue to operate according to the current power to finish the cooking operation; if the power needs to be adjusted according to the voltage of the power grid, the electric pressure cooker can operate according to the adjusted power to finish cooking operation.

Optionally, in the foregoing embodiment of the present invention, determining whether to adjust the first cooking power based on the grid voltage includes: judging whether the voltage of the power grid is greater than a preset voltage or not; if the voltage of the power grid is greater than the preset voltage, adjusting the first cooking power to be a second cooking power, wherein the second cooking power is greater than the first cooking power; and if the power grid voltage is less than or equal to the preset voltage, keeping the first cooking power unchanged.

Specifically, the preset voltage may be a normal voltage of the electric pressure cooker, and may be 220V, for example.

In an alternative scheme, since the higher the grid voltage is, the higher the IGBT temperature rise is, after the grid voltage is detected, it is only necessary to determine whether the grid voltage is greater than a normal voltage. When the voltage of the power grid is larger than the normal voltage, the hard breakover voltage of the IGBT under the same power is increased, the temperature rise is high, at the moment, the power needs to be adjusted, the power is increased, the PPG value is increased, the coil discharges as much as possible, the next charging process is started, and therefore the corresponding hard breakover voltage is reduced, and the temperature rise is reduced. When the voltage of the power grid is smaller than or equal to the normal voltage, the temperature rise of the IGBT under the same power is kept unchanged, and the power does not need to be adjusted at the moment.

Optionally, in the above embodiments of the present invention, adjusting the first cooking power to the second cooking power includes: acquiring a hard on voltage corresponding to the first cooking power and a preset voltage; and acquiring second cooking power corresponding to the power grid voltage and the hard breakover voltage.

In the design stage of the electric pressure cooker, under the condition that parameters of the coil disc and the resonance capacitor are fixed, key parameter tests are carried out on high and low power under the same voltage and high and low voltage under the same power. For example, under the same voltage, how long the lowest power can be continuously heated, the hard on voltage Δ V of the IGBT at this time, and how much temperature rises. Or under low power, the IGBT hard conduction voltage delta V and the temperature rise are small when the voltage is high or low.

Based on the test, the corresponding relation among the power grid voltage, the cooking power and the IGBT hard conduction voltage can be quantized to generate a query table, so that the adjusted cooking power can be determined based on the generated query table in the process of delivery of the electric pressure cooker. The cooking power is adjusted according to the corresponding relation of the power grid voltage, the cooking power and the hard conduction voltage, so that the adjustment accuracy is improved, and the temperature rise of the IGBT is ensured to be basically kept unchanged.

In the lookup table, the corresponding relationship between the combination of the grid voltage and the cooking power and the hard on voltage is many-to-one, that is, one set of grid voltage and cooking power corresponds to one hard on voltage, one hard on voltage may correspond to multiple sets of grid voltage and cooking power, and the multiple sets of grid voltage and cooking power may be the same or different.

In an alternative scheme, firstly, a table look-up may be performed based on the first cooking power and the preset voltage to obtain a unique hard on-state voltage, then, a table look-up may be performed based on the preset voltage and the inquired hard on-state voltage to obtain a plurality of cooking powers (including the first cooking power), and further, a cooking power larger than the first cooking power may be selected from the plurality of cooking powers to be used as the second cooking power.

Optionally, in the above embodiment of the present invention, controlling the cooking appliance to operate according to the first cooking power or the adjusted second cooking power includes: controlling the cooking appliance to continuously operate according to the first cooking power; or controlling the cooking appliance to operate intermittently according to the second cooking power.

In an alternative scheme, the electric pressure cooker can continuously run according to low power in order to finish cooking operation, if the voltage of a power grid is large, in order to ensure the temperature rise of the IGBT, a heating gear needs to be increased, and the low power is adjusted to be high power. Further, if the electric pressure cooker continuously operates according to high power, the temperature change and the pressure change of the electric pressure cooker change, the corresponding cooking time changes, the taste of food changes, and in order to avoid the influence of the power change on the cooking effect, the high-power intermittent operation can be adopted, which is equivalent to the low-power continuous operation, so that the accurate control of the cooking process is realized.

Optionally, in the above embodiments of the present invention, the controlling the cooking appliance to intermittently operate according to the second cooking power includes: acquiring the ratio of the first cooking power to the second cooking power; determining an operating time and a stop time of the operating cycle based on the ratio; and controlling the cooking appliance to operate according to the second cooking power and the operation period.

Based on the heating power calculation formula, the heating power of the first cooking power P1 is P0 ═ P1 × (t); if the second cooking power P2 is used for intermittent heating, the heating power is P1 ═ P2 × (t × operation time/total operation period time), wherein the total operation period time is the sum of the operation time and the stop time. In order to make the high-power intermittent operation equivalent to the low-power continuous operation, P0 is P1, so the total operating time/operating period is P1/P2. For example, when the operation is performed continuously at 800W and intermittently at 1000W, the total operation time/operation period is 800/1000 8/10, the operation time is further determined to be 8s, and the total operation period time is 10s, so that the intermittent operation at 1000W may refer to the operation at 1000W for 8s, and then the operation is stopped for 2s, and the process is cyclically repeated.

The running time and the stopping time of the intermittent operation are determined by adjusting the cooking power before and after the adjustment, so that the PPG value is increased, and the hard on voltage delta V is reduced.

Optionally, in the foregoing embodiment of the present invention, detecting the grid voltage includes: the input voltage of the cooking utensil is detected through the voltage detection circuit, and the power grid voltage is obtained.

Specifically, the existing electric pressure cooker product is provided with a voltage detection circuit, so that the voltage detection circuit can be directly used for detecting the voltage of a power grid. The voltage detection circuit arranged on the cooking appliance detects the voltage of the power grid, other detection circuits do not need to be additionally arranged, and the effect of reducing the cost of the cooking appliance while reducing the influence of the voltage of the power grid on the temperature rise of the IGBT is achieved.

Referring to fig. 3, a preferred embodiment of the present invention will be described in detail with reference to an example of a minimum continuous heating power 800W at a voltage of 220V, as shown in fig. 3, the method includes the following steps:

and step S31, electrifying the whole machine, and detecting the voltage of the power grid. And the user selects a cooking function, and the electric pressure cooker starts to cook.

Optionally, the electric pressure cooker is powered on, and a voltage detection circuit is arranged on the power panel and can detect the voltage of a power grid. After the user selects the cooking function, the electric pressure cooker starts to cook according to the selected cooking function.

Step S32, if it is determined that heating at 800W power is required.

And step S33, when the grid voltage is detected to be normal 220V.

In step S34, the PPG value is PPG0, and the hard on voltage Δ V is Δ V0.

In step S35, heating is performed at normal power of 800W.

In step S36, when the grid voltage is detected to be slightly higher, 240V.

In step S37, when the PPG value is PPG0, the hard on voltage Δ V is Δ V1, where Δ V1> Δ V0.

In step S38, the shift is up to 1000W, where the PPG value is PPG1, the hard on voltage is Δ V2, and PPG1> PPG0, Δ V2 ═ Δ V0< Δ V1.

Alternatively, the hard turn-on voltage is increased, the IGBT temperature rise becomes high. In order to lower the IGBT hard-on voltage Δ V, a method of raising the gear may be employed. The power is increased from 800W to 1000W. The power is increased, the PPG value is increased, the delta V is reduced, namely, the hard conduction voltage delta V is reduced, and the temperature rise of the IGBT is reduced.

In step S39, 1000W heating is adopted, or 1000W intermittent heating is adopted, which is equivalent to 800W heating.

Alternatively, for accurate control, 1000W intermittent heating, e.g., 8S on and 2S off, may also be used, so that the power is equivalent to 800W.

Step S310, when the grid voltage is detected to be higher and is 260V.

In step S311, the PPG value is PPG0, and the hard on voltage Δ V is Δ V3, where Δ V3> Δ V1> Δ V0.

In step S312, the gear is shifted up to 1200W, where the PPG value is PPG2, the hard on voltage is Δ V4, and PPG2> PPG1> PPG0, Δ V4 ═ Δ V2 ═ Δ V0< Δ V1.

In step S313, 1200W heating is adopted, or 1200W intermittent heating is adopted, which is equivalent to 800W heating.

Alternatively, for accurate control, 1200W intermittent heating may also be used, e.g., 20S on and 10S off, so that the power is equivalent to 800W.

In step S314, the cooking is completed.

Optionally, according to the corresponding power until the cooking is finished.

Through the steps, the voltage of the power grid can be detected, and when the voltage rises, the lowest continuous heating power is actively adjusted: upshift, or intermittent heating after upshift, is equivalent to the lowest power. By improving the PPG value, the hard on-state voltage delta V is reduced, the temperature rise of the IGBT is not too high, the performance is not affected, and the damage is prevented.

According to the embodiment of the invention, the cooking control device is also provided. The device corresponds to the cooking control method described above, and is not limited in detail herein.

Fig. 4 is a schematic diagram of a cooking control apparatus according to an embodiment of the present invention, as shown in fig. 4, the apparatus including: an acquisition module 42, an adjustment module 44, and a control module 46.

The obtaining module 42 is configured to obtain a first cooking power of the cooking appliance, and detect a grid voltage; the adjusting module 44 is configured to determine whether to adjust the first cooking power based on the grid voltage under the condition that it is determined that the first cooking power is less than or equal to the preset power, so that a difference value of the hard conduction voltage of the insulated gate bipolar transistor before and after the first cooking power is adjusted is within a preset range; the control module 46 is used for controlling the cooking appliance to operate according to the first cooking power or the adjusted second cooking power.

Optionally, in the above embodiment of the present invention, the adjusting module includes: the judging unit is used for judging whether the voltage of the power grid is greater than a preset voltage or not; the adjusting unit is used for adjusting the first cooking power to a second cooking power if the grid voltage is greater than a preset voltage, wherein the second cooking power is greater than the first cooking power; and a maintaining unit for maintaining the first cooking power unchanged if the grid voltage is less than or equal to a preset voltage.

Optionally, in the above embodiment of the present invention, the adjusting unit is further configured to obtain a hard on voltage corresponding to the first cooking power and the preset voltage, and obtain a second cooking power corresponding to the grid voltage and the hard on voltage.

Optionally, in the above embodiment of the present invention, the control module is further configured to control the cooking appliance to continuously operate according to the first cooking power; or controlling the cooking appliance to operate intermittently according to the second cooking power.

Optionally, in the foregoing embodiment of the present invention, the control module includes: an obtaining unit for obtaining a ratio of the first cooking power and the second cooking power; a determination unit for determining an operation time and a stop time of the operation cycle based on the ratio; and the control unit is used for controlling the cooking appliance to operate according to the second cooking power and the operation period.

Optionally, in the foregoing embodiment of the present invention, the obtaining module includes: and the detection unit is used for detecting the input voltage of the cooking appliance through the voltage detection circuit to obtain the power grid voltage.

According to an embodiment of the present invention, there is also provided a storage medium including a stored program, wherein the program executes the above cooking control method.

According to an embodiment of the present invention, there is also provided a processor, configured to execute a program, where the program executes the cooking control method.

In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A cooking control method, comprising:

acquiring first cooking power of a cooking appliance, and detecting a power grid voltage;

under the condition that the first cooking power is determined to be smaller than or equal to the preset power, whether the first cooking power is adjusted or not is determined on the basis of the power grid voltage, so that the difference value of the hard conducting voltage of the insulated gate bipolar transistor before and after the first cooking power is adjusted is within the preset range;

and controlling the cooking appliance to operate according to the first cooking power or the adjusted second cooking power.

2. The method of claim 1, wherein determining whether to adjust the first cooking power based on the grid voltage comprises:

judging whether the power grid voltage is greater than a preset voltage or not;

if the grid voltage is greater than the preset voltage, adjusting the first cooking power to the second cooking power, wherein the second cooking power is greater than the first cooking power;

If the grid voltage is less than or equal to the preset voltage, keeping the first cooking power unchanged.

3. The method of claim 2, wherein adjusting the first cooking power to the second cooking power comprises:

acquiring a hard on voltage corresponding to the first cooking power and the preset voltage;

acquiring the second cooking power corresponding to the grid voltage and the hard on voltage.

4. The method of claim 1, wherein controlling the cooking appliance to operate at the first cooking power or the adjusted second cooking power comprises:

controlling the cooking appliance to continuously operate according to the first cooking power; or

And controlling the cooking appliance to operate intermittently according to the second cooking power.

5. The method of claim 4, wherein controlling the cooking appliance to operate intermittently at the second cooking power comprises:

acquiring the ratio of the first cooking power to the second cooking power;

determining an operating time and a stop time of the operating cycle based on the ratio;

and controlling the cooking appliance to operate according to the second cooking power and the operation period.

6. The method of claim 1, wherein detecting the grid voltage comprises:

and detecting the input voltage of the cooking appliance through a voltage detection circuit to obtain the power grid voltage.

7. The method of claim 1, wherein the cooking appliance is an electric pressure cooker.

8. The method of claim 1, wherein the predetermined range is 0-20V.

9. The method of claim 8, wherein the hard turn-on voltage is the same before and after the first cooking power adjustment.

10. A cooking control device, comprising:

the acquisition module is used for acquiring first cooking power of the cooking appliance and detecting the voltage of a power grid;

the adjusting module is used for determining whether to adjust the first cooking power based on the power grid voltage under the condition that the first cooking power is determined to be smaller than or equal to preset power, so that the difference value of the hard conducting voltage of the insulated gate bipolar transistor before and after the first cooking power is adjusted is within a preset range;

and the control module is used for controlling the cooking appliance to operate according to the first cooking power or the adjusted second cooking power.

11. A storage medium characterized by comprising a stored program, wherein the program executes the cooking control method according to any one of claims 1 to 9.

12. A processor, characterized in that the processor is configured to run a program, wherein the program is configured to execute the cooking control method according to any one of claims 1 to 9 when running.