CN113317687A

CN113317687A - Cooking control method and device and cooking appliance

Info

Publication number: CN113317687A
Application number: CN202010131584.1A
Authority: CN
Inventors: 刘礼发
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Current assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2021-08-31
Anticipated expiration: 2040-02-28
Also published as: CN113317687B

Abstract

The invention discloses a cooking control method and device and a cooking appliance. Wherein, the method comprises the following steps: controlling the cooking appliance to heat according to the first power; acquiring a first temperature of the top of the cooking appliance under the condition of receiving the upper pressure signal; comparing the first temperature with a preset boiling point, and determining second power, wherein the second power is less than or equal to the first power; and controlling the cooking appliance to heat according to the second power. The invention solves the technical problems that when the cooking utensil is pressed up in advance in the related art, the actual pressure is too high due to the lagging temperature detection, and the potential safety hazard exists in the cooking utensil.

Description

Cooking control method and device and cooking appliance

Technical Field

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

Background

The existing cooking utensil adopts a top NTC (Negative Temperature Coefficient thermistor) to control the Temperature in a pot, further controls the pressure and realizes the accurate control of the pressure.

However, for some fast cooking functions, such as braised pork ribs and braised pork in brown sauce, in order to achieve the purpose of fast cooking, high-power fast pressure-up is generally adopted, and at the moment, the temperature rises and changes fast, cold air cannot be discharged in time, so that pressure-up is advanced, namely, the actual temperature in the cooker is lower than the boiling point when pressure-up is carried out. Meanwhile, because the NTC detection temperature has certain time delay hysteresis, if the pressure control is still realized according to the preset temperature, the actual pressure in the cooker is greater than the set pressure.

Moreover, the pressure bearing of the cooking appliance has a certain range, if the actual pressure in the cooker is too large, the pressure relief of a sealing ring and the like can be caused, food materials are sprayed, and certain potential safety hazards exist.

In view of the above problems, no effective solution has been proposed.

Disclosure of Invention

The embodiment of the invention provides a cooking control method and device and a cooking appliance, and aims to at least solve the technical problems that when the cooking appliance is pressed upwards in advance in the related art, the actual pressure is too high due to lagging temperature detection, and the potential safety hazard exists in the cooking appliance.

According to an aspect of an embodiment of the present invention, there is provided a cooking control method including: controlling the cooking appliance to heat according to the first power; acquiring a first temperature of the top of the cooking appliance under the condition of receiving the upper pressure signal; comparing the first temperature with a preset boiling point, and determining second power, wherein the second power is less than or equal to the first power; acquiring a first temperature of the top of the cooking appliance; and controlling the cooking appliance to heat according to the second power.

In the embodiment of the invention, the purpose of rapid pressure rise is achieved by adopting a mode of controlling the top temperature and indirectly controlling the pressure by adopting high power, the purpose of avoiding the pressure overshoot in the cooker and exceeding the target pressure is achieved by comparing the collected first temperature with the preset boiling point after pressure rise and determining to continue heating by adopting high power or reduced second power, so that the technical effect of improving the safety of the cooking appliance is realized, and the technical problems of overhigh actual pressure and potential safety hazards of the cooking appliance caused by temperature detection lag when the cooking appliance is pressed in advance in the related art are solved.

Optionally, comparing the first temperature with a preset boiling point and determining the second power comprises: acquiring a difference value between a preset boiling point and a first temperature; based on the difference, a second power is determined. And determining the second power by presetting the difference value of the boiling point and the temperature during the upper pressure, and achieving the purpose of determining whether to reduce the heating power after the upper pressure.

Optionally, determining the second power based on the difference comprises: comparing the difference value with a preset value; determining the first power as the second power under the condition that the difference value is smaller than or equal to a preset value; and reducing the first power to obtain a second power under the condition that the difference value is larger than a preset value. And comparing the difference value with a preset value to achieve the purpose of determining whether to reduce the heating power after the pressure is increased.

Optionally, reducing the first power, and obtaining the second power includes: matching the difference value with the first interval set, wherein if the maximum value of a first interval in the first interval set is smaller than the minimum value of a second interval, the power corresponding to the first interval is larger than the power corresponding to the second interval, and the power corresponding to the first interval and the power corresponding to the second interval are both smaller than the first power; and acquiring the power corresponding to the interval matched with the difference value in the first interval set to obtain a second power. Through comparing difference and every interval in the first interval set for the second power is more accurate, accords with actual culinary art demand more, both can satisfy fast cooking, can avoid actual pressure too big again.

Optionally, in the process of controlling the cooking appliance to heat at the second power, the method further comprises: acquiring a second temperature of the top of the cooking appliance; comparing the second temperature with a target temperature, wherein the target temperature is less than a preset temperature corresponding to the set pressure of the cooking appliance; controlling the cooking appliance to stop heating under the condition that the second temperature is higher than the target temperature; and controlling the cooking appliance to continue heating in the case that the second temperature is lower than the target temperature. When the heating power is reduced, the reduced target temperature is adopted to realize the heating stop control, and the hysteresis of temperature detection in the pressure maintaining process is further avoided.

Optionally, the target temperature is a sum of the first temperature and a preset temperature increment, wherein the preset temperature increment is a difference between the preset temperature and a preset boiling point. And determining the target temperature by presetting the difference value of the boiling point and the temperature during the upper pressure, and achieving the purpose of reducing the heating stop temperature point.

Optionally, after receiving the pressure-up signal, controlling the cooking appliance to exhaust air during heating. After the pressure is increased, active exhaust is adopted, so that cold air is exhausted, steam in the pot is saturated, the delay hysteresis of the NTC is corrected, and the temperature control is more accurate.

Optionally, in the case that the exhaust time of the cooking appliance reaches the preset time, the method further comprises: acquiring a third temperature of the top of the cooking appliance; comparing the third temperature with a preset temperature; controlling the cooking appliance to stop heating under the condition that the third temperature is higher than the preset temperature; and controlling the cooking appliance to continue heating under the condition that the third temperature is lower than the preset temperature. The cooking appliance is controlled to exhaust for a period of time, so that cold air is exhausted, more pressure drop is avoided, meanwhile, heating control is stopped through preset temperature, the pressure in the cooker is maintained at the target pressure, and the accuracy of pressure control is improved.

Optionally, the preset time is determined based on a difference between the preset boiling point and the first temperature. The exhaust time is determined based on the difference between the top temperature after the upward pressure and the preset boiling point, so that the steam in the boiler can be saturated.

Optionally, the preset time is determined based on the difference value by: matching the difference value with a second interval set, wherein if the maximum value of a third interval in the second interval set is smaller than the minimum value of a fourth interval, the time corresponding to the third interval is longer than the time corresponding to the fourth interval; and acquiring the time corresponding to the interval matched with the difference value in the second interval set to obtain the preset time. By comparing the difference value with each interval in the second interval set, the preset time is more accurate, the actual cooking requirement is more met, the exhaust requirement can be met, the delay hysteresis of the NTC is corrected, the phenomenon that the pressure in the cooker is reduced more can be avoided, and the cooking time is prolonged.

According to another aspect of the embodiments of the present invention, there is also provided a cooking control apparatus including: the first control module is used for controlling the cooking appliance to heat according to first power; the first acquisition module is used for acquiring a first temperature of the top of the cooking appliance under the condition of receiving the upper pressure signal; the determining module is used for comparing the first temperature with a preset boiling point and determining second power, wherein the second power is less than or equal to the first power; and the second control module is used for controlling the cooking appliance to heat according to the second power under the condition of receiving the upper pressure signal.

Optionally, the determining module includes: the acquisition unit is used for acquiring a second temperature of the top of the cooking utensil when the pressing signal is received; the third acquiring module is used for acquiring a difference value between the preset boiling point and the first temperature; a determining unit for determining the second power based on the difference.

According to another aspect of the embodiments of the present invention, there is also provided a cooking appliance including: the upper pressure detection device is used for outputting an upper pressure signal; a temperature sensor for acquiring a first temperature of a top of the cooking appliance; and the controller is connected with the upper pressure detection device and the temperature sensor and used for controlling the cooking appliance to heat according to the first power, comparing the first temperature collected by the temperature sensor with a preset boiling point under the condition of receiving an upper pressure signal output by the upper pressure detection device, determining the second power and controlling the cooking appliance to heat according to the second power, wherein the second power is less than or equal to the first power.

Optionally, the controller comprises: and the processing module is connected with the upper pressure detection device and the temperature sensor, and is used for acquiring a difference value between a preset boiling point and the first temperature and determining the second power based on the difference value.

Optionally, the cooking appliance is an electric pressure cooker.

According to another aspect of the embodiments of the present invention, there is also provided a storage medium including a stored program, wherein the apparatus on which the storage medium is located is controlled to execute the above-mentioned cooking control method when the program is executed.

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

FIG. 2 is a flow chart of an alternative cooking control method according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a cooking control apparatus according to an embodiment of the present invention;

fig. 4 is a schematic view of a cooking appliance 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.

The temperature in the cooker is controlled by the NTC at the top, the pressure is indirectly controlled, the temperature and the pressure are corresponding, the pressure in the cooker is P1, the temperature detected by the NTC is T1 at the moment, the pressure is controlled to be P1, and the heating is stopped only when the temperature in the cooker exceeds T1; when the pressure is increased to P2, the NTC detects the temperature as T2, the pressure is controlled to P2, and the heating is stopped when the temperature in the pan exceeds T2. Wherein, P1< P2, T1< T2.

Under program control, an initial upper pressure point is set, corresponding to a boiling point T0. Temperature increase Δ T1 ═ T1-T0 above boiling point at pressure P1; at pressure P2, the temperature increase Δ T2 is T2-T0.

In a usage scenario of a braising cooking function, a small amount of food materials are generally adopted for braising cooking, and in order to prevent early pressure rise, due to the delay hysteresis of NTC detection temperature, the actual pressure is too high, the embodiment of the invention provides the following scheme:

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. 1 is a flowchart of a cooking control method according to an embodiment of the present invention, as shown in fig. 1, the method including the steps of:

step S102, controlling a cooking appliance to heat according to first power;

specifically, the cooking appliance may be an appliance capable of realizing high-pressure cooking, such as an electric pressure cooker, but the invention is not limited thereto, and an electric pressure cooker is taken as an example in the embodiment of the invention to describe in detail. The first power may be a high power used for fast cooking, and different heating powers may be set according to different functions during actual use.

Step S104, acquiring a first temperature of the top of the cooking utensil under the condition of receiving the pressure-up signal;

specifically, the above-mentioned pressing signal may be detected by a pressing detection device such as a check lever or a reed switch, but the present invention is not limited thereto, and may be implemented in other manners capable of determining the pressing of the cooking appliance. The first temperature can be detected by the NTC disposed at the top, but is not limited thereto, and may be implemented by other devices capable of detecting temperature.

Step S106, comparing the first temperature with a preset boiling point, and determining second power, wherein the second power is less than or equal to the first power;

specifically, the preset boiling point may be a preset boiling point T0 for different cooking functions. Under normal cooking conditions, the temperature detected by the NTC of the top part at the time of pressing up is the boiling point T0; in the case of rapid pressing-up, the temperature detected by the NTC at the top tends to be lower than the boiling point T0. On the basis, when the temperature is detected by the NTC at the top part and the boiling point T0 are compared during the pressing, whether the cooking is quickly pressed, and whether the heating power needs to be reduced can be determined.

And step S108, controlling the cooking appliance to heat according to the second power.

In an alternative embodiment, in the usage scenario of the braising cooking function, before starting cooking, the user may select the cooking function as desired and start cooking by pressing the start key. After cooking starts, the detected top temperature is compared with the boiling point T0 of the corresponding function after the rapid pressure-up with the larger first power, if the top temperature is less than the boiling point T0, the first power can be reduced to the second power and the heating is continued with the second power in order to avoid the pressure overshoot in the cooker.

Optionally, comparing the first temperature with a preset boiling point and determining the second power comprises: acquiring a difference value between a preset boiling point and a first temperature; based on the difference, a second power is determined.

In an optional embodiment, when the upper pressure signal is detected, the first temperature Ta of the top collected at this time may be recorded, and the heating power is adjusted according to the difference between Ta and T0 by comparing Ta and T0, so as to achieve the purpose of reducing the heating power after the upper pressure.

Optionally, determining the second power based on the difference comprises: comparing the difference value with a preset value; determining the first power as the second power under the condition that the difference value is smaller than or equal to a preset value; and reducing the first power to obtain a second power under the condition that the difference value is larger than a preset value.

Specifically, the preset value may be a threshold value determined in advance through experiments, and it may be determined whether the first temperature of the collected top is lower than the preset boiling point. For example, the preset value may be 0.

In an alternative embodiment, when the pressure-up signal is detected, the first temperature Ta of the top collected at this time may be recorded, and by comparing the difference T0-Ta with a preset value, it is determined whether the first temperature is less than the boiling point temperature, and thus whether the heating power is adjusted. And comparing the difference value with a preset value to achieve the purpose of determining whether to reduce the heating power after the pressure is increased.

Optionally, reducing the first power, and obtaining the second power includes: matching the difference value with the first interval set, wherein if the maximum value of a first interval in the first interval set is smaller than the minimum value of a second interval, the power corresponding to the first interval is larger than the power corresponding to the second interval, and the power corresponding to the first interval and the power corresponding to the second interval are both smaller than the first power; and acquiring the power corresponding to the interval matched with the difference value in the first interval set to obtain a second power.

Specifically, each interval in the first interval set may be determined based on a different threshold, and the greater the number of intervals, the more accurate the determined second power is, but the longer the determination process is, and in an actual use process, the intervals included in the first interval set may be set as needed. Through comparing difference and first interval set for the second power is more accurate, accords with actual culinary art demand more, both can satisfy fast cooking, can avoid actual pressure too big again.

In an alternative embodiment, three first intervals are taken as an example for description, and are respectively: when the difference between T0-Ta and (threshold B, threshold a), T0 may be regarded as Ta, the power corresponding to the interval is first power W1, that is, heating is continued with the first power, when the difference between T0-Ta and (threshold B, threshold a) matches, T0-Ta may be regarded as greater than threshold B, the power corresponding to the interval is W3, that is, heating is performed with second power W3, when the difference between T0-Ta and (threshold a, boiling point T0) matches, T0-Ta may be regarded as greater than threshold a, the power corresponding to the interval is W2, that is, heating is performed with second power W2, where threshold a > threshold B, W2< W3< W1.

Optionally, in the process of controlling the cooking appliance to heat at the second power, the method further comprises: acquiring a second temperature of the top of the cooking appliance; comparing the second temperature with a target temperature, wherein the target temperature is less than a preset temperature corresponding to the set pressure of the cooking appliance; controlling the cooking appliance to stop heating under the condition that the second temperature is higher than the target temperature; and controlling the cooking appliance to continue heating in the case that the second temperature is lower than the target temperature.

Specifically, the second temperature may be collected in the same manner as the first temperature, which is not described herein. The set pressure may be a pressure used for a cooking function currently performed by the cooking appliance, or may be a pressure manually set by a user before starting cooking. The method adopts the mode of controlling the temperature in the cooker and indirectly controlling the pressure, the set pressure corresponds to the preset temperature, and the preset temperature is taken as the heating stop temperature.

In an alternative embodiment, in a usage scenario of the braising cooking function, before starting cooking, a user may set the pressure, or may not set the pressure, and directly adopt a programmed preset pressure, where the set pressure is P1 and the corresponding preset temperature is T1. After cooking starts, the first power is used for quickly pressing up, the first power is reduced to the second power after pressing up, continuous heating is carried out by the second power, meanwhile, the preset temperature T1 is reduced to the target temperature T2, the top temperature is detected in real time, control of stopping heating and continuing heating is achieved by comparing the detected temperature with the target temperature, and hysteresis of temperature detection in the pressure maintaining process is further avoided.

Optionally, the target temperature is a sum of the first temperature and a preset temperature increment, wherein the preset temperature increment is a difference between the preset temperature and a preset boiling point.

In the usage scenario of the braising cooking function, the first temperature Ta < the preset boiling point T0 is in the early-stage pressure-increasing state. If the heating is still carried out according to the set pressure P1, i.e. is stopped when the corresponding preset temperature T1 is reached, then the temperature increase Δ Ta is Ta-T0 and the temperature increase Δ T1 is T1-T0 above the normal boiling point, so that the actual pressure Pa in the pan is > P1.

In an alternative embodiment, a method of lowering the temperature at which heating is stopped may be employed, and heating is stopped when the temperature reaches the target temperature T2, where T2 is the first temperature Ta + temperature increment Δ T1, i.e., T2 is Ta + T1-T0, and T2< T1 since Ta < T0. And determining the target temperature by presetting the difference value of the boiling point and the temperature during the upper pressure, and achieving the purpose of reducing the heating stop temperature point.

Optionally, after receiving the pressure-up signal, controlling the cooking appliance to exhaust air during heating.

Specifically, the active venting of the cooking appliance may be controlled by a solenoid valve, but is not limited thereto, and other ways may be used to achieve the venting purpose.

In an alternative embodiment, after the pressure is increased, heating may be continued at the reduced second power while actively exhausting air through the solenoid valve to vent a portion of the air pressure. In another alternative embodiment, after the pressurization, the heating may be continued at the reduced second power while the stop heating control is performed at the reduced target temperature, and the partial pressure may be vented by actively venting the gas through the electronic valve. The cold air is discharged in a limited way, and the temperature in the pot rises continuously after the cold air is discharged due to continuous heating, so that the cold air is discharged, the steam in the pot is saturated, the time delay hysteresis of the NTC is corrected, and the temperature control is more accurate.

Optionally, in the case that the exhaust time of the cooking appliance reaches the preset time, the method further comprises: acquiring a third temperature of the top of the cooking appliance; comparing the third temperature with a preset temperature; controlling the cooking appliance to stop heating under the condition that the third temperature is higher than the preset temperature; and controlling the cooking appliance to continue heating under the condition that the third temperature is lower than the preset temperature.

It should be noted that if the cooking device is constantly exhausted, the pressure in the cooker is continuously reduced, and the purpose of high-pressure cooking cannot be achieved. In an alternative embodiment, the cooking device may be controlled to exhaust for a period of time (i.e. the preset time), and the amount of cold air in the pot may be different due to the difference between the temperature in the pot and the preset boiling point when the pressure is increased, so as to ensure the steam saturation in the pot, the exhaust time (i.e. the preset time) may be determined according to the difference between the temperature in the pot and the preset boiling point. By controlling the cooking appliance to exhaust for a period of time, not only is the discharge of cold air ensured, but also the pressure drop is prevented from being too much.

For example, a function that can be used for the correspondence between the difference and the exhaust time may be determined in advance through experiments, and after the difference is obtained, the difference may be directly substituted into the function to obtain the preset time. For another example, a plurality of difference intervals each of which is set to a time in advance may be determined experimentally in advance, so that the preset time may be determined by comparing the difference with the plurality of difference intervals.

In an alternative embodiment, after the pressure is increased, the heating can be continued according to the reduced second power, and the air is actively exhausted through the solenoid valve, and after the preset time of the exhaust, the hysteresis of the NTC is corrected, at which time, the control of stopping the heating and continuing the heating can be directly realized according to the preset temperature T1, so that the pressure in the cooker is maintained at the target pressure.

Optionally, under the condition that the heating control is stopped according to the reduced target temperature, after exhausting for a preset time, the target temperature may be gradually increased until the target temperature is the same as the preset temperature, so that the pressure in the cooker approaches to the set pressure, and the accuracy of the pressure control is improved.

Optionally, the preset time is determined based on the difference value by: matching the difference value with a second interval set, wherein if the maximum value of a third interval in the second interval set is smaller than the minimum value of a fourth interval, the time corresponding to the third interval is longer than the time corresponding to the fourth interval; and acquiring the time corresponding to the interval matched with the difference value in the second interval set to obtain the preset time.

Specifically, each interval in the second interval set may be determined based on a different threshold, and the greater the number of intervals, the more accurate the determined preset time is, but the longer the determination process is, and in the actual use process, the intervals included in the second interval set may be set as needed. By comparing the difference value with the second interval set, the preset time is more accurate, the actual cooking requirement is more met, the exhaust requirement can be met, the delay hysteresis of the NTC is corrected, the phenomenon that the pressure in the cooker is reduced more can be avoided, and the cooking time is prolonged.

In an alternative embodiment, three second intervals are taken as an example for description, and as with the three first intervals, they are respectively: when the difference between T0 and Ta matches (threshold B, threshold a), T0 may be regarded as Ta, and the time corresponding to this interval is 0, that is, no exhaust is performed, when the difference between T0 and Ta matches (threshold B, threshold a), T0-Ta may be regarded as being greater than threshold B, and the time corresponding to this interval is T2, that is, the exhaust time is T2, when the difference between T0 and Ta matches (threshold a, boiling point T0), T0-Ta may be regarded as being greater than threshold a, and the time corresponding to this interval is T1, and the exhaust time is T1, where threshold a > threshold B, T1< T2.

It should be noted that the larger the difference between the two values, the smaller the amount of food, the more cold air will be discharged after the start of the discharge of air, and the temperature will rise faster.

A preferred embodiment of the present invention will be described in detail with reference to fig. 2. As shown in fig. 2, the method comprises the steps of:

step S21, selecting a cooking function, and starting cooking, wherein the pressure of the cooking function is P1, the corresponding preset temperature is T1, and the preset boiling point is T0.

And step S22, heating by adopting high-power W1 before pressing.

Optionally, high-power heating is adopted to achieve the purpose of rapid pressing.

In step S23, when the upper pressure signal is detected, the upper pressure time temperature Ta is compared with the preset boiling point T0.

Alternatively, when you are detected pressing you up the check lever, the temperature Ta at that time is recorded. Meanwhile, according to the upper pressure heating time, the cooking of a small amount of food materials is judged. By comparing Ta and T0, the heating power is adjusted according to the difference between the two.

In step S24, when T0-Ta > threshold A, heating is carried out by adopting power W2 after pressing.

Alternatively, if T0-Ta is greater than the programmed preset threshold A, then power W2 is used for heating.

In step S25, when T0-Ta > threshold B, heating is carried out by adopting power W3 after pressing.

Alternatively, if T0-Ta is greater than the programmed preset threshold B, then power W3 is used for heating.

In step S26, when T0 is Ta, heating is continued with power W1.

Alternatively, threshold a > threshold B, W2< W3< W1.

And step S27, actively exhausting the electromagnetic valve, continuously heating and boosting the pressure, and reducing the target temperature T2, wherein T2 is less than T1.

Optionally, the above boiling temperature increment Δ T1 ═ T1-T0, T2 ═ Ta +. Δ T1.

By reducing the heating power after the pressure is increased and reducing the heating stopping temperature, the cold air in the cooker can be prevented from being discharged in time, and the actual pressure rises too fast to exceed the target control pressure P1.

Meanwhile, after the pressure is increased, the air is actively exhausted through the electromagnetic valve. A portion of the air pressure is discharged, wherein the cold air will be preferentially discharged. Because heating is not stopped, cold air is discharged, the temperature in the boiler continues to rise, steam in the boiler is saturated, the NTC detection hysteresis is improved, and the detected temperature is close to the actual temperature.

And step S28, determining the delay time T according to the difference value of T0-Ta.

Alternatively, if T0-Ta is greater than the programmed preset threshold A, then delay T1; if T0-Ta is greater than the programmed preset threshold B, then there is a delay of T2. Where threshold A > threshold B, t1< t 2.

In step S29, the target temperature T2 is increased step by step after a delay, so that T2 becomes T1.

Optionally, after the time t, the delay lag of the NTC is corrected, and the temperature detected by the NTC is the current actual temperature in the inner pan. The stop heating temperature point T2 is then raised again so that T2 is T1.

Step S210, stopping heating when the temperature in the pot is more than T1; and when the temperature is less than T1, heating is continued.

Optionally, NTC has no error, and the actual pressure in the pan at this time P1.

Through the steps, when the judgment result is that a small amount of cooking is performed, the heating power is timely reduced after the cooking is pressed upwards, and the heating stopping temperature point is reduced. The pressure overshooting beyond the target pressure can be prevented. Meanwhile, after the pressure is increased, the air is actively exhausted, cold air is exhausted, and NTC detection errors are reduced. After a certain time, the heating stop temperature point is increased to the target temperature point, and accurate pressure control is realized.

According to the embodiment of the invention, the cooking control device is also provided. The device can execute the cooking control method provided in the above embodiment, and the preferred embodiment is the same as that described in the above embodiment, and is not described herein again.

Fig. 3 is a schematic diagram of a cooking control apparatus according to an embodiment of the present invention, as shown in fig. 3, the apparatus including:

a first control module 32 for controlling the cooking appliance to heat at a first power;

a first obtaining module 34, configured to obtain a first temperature of the top of the cooking appliance when the up-pressure signal is received;

a determining module 36, configured to compare the first temperature with a preset boiling point, and determine a second power, where the second power is less than or equal to the first power;

and a second control module 38 for controlling the cooking appliance to heat at a second power.

Optionally, the determining module includes: the acquiring unit is used for acquiring a difference value between a preset boiling point and a first temperature; a determining unit for determining the second power based on the difference.

Optionally, the determining unit includes: a comparison subunit, configured to compare the difference value with a preset value; the determining subunit is configured to determine the first power as the second power when the difference is smaller than or equal to a preset value, and reduce the first power to obtain the second power when the difference is larger than the preset value.

Optionally, the determining the subunit comprises: the matching submodule is used for matching the difference with the first interval set, wherein if the maximum value of a first interval in the first interval set is smaller than the minimum value of a second interval, the power corresponding to the first interval is larger than the power corresponding to the second interval, and the power corresponding to the first interval and the power corresponding to the second interval are both smaller than the first power; and the obtaining submodule is used for obtaining the power corresponding to the interval matched with the difference value in the first interval set to obtain the second power.

Optionally, the apparatus further comprises: the second acquisition module is used for acquiring a second temperature of the top of the cooking appliance; the comparison module is used for comparing the second temperature with a target temperature, wherein the target temperature is less than a preset temperature corresponding to the set pressure of the cooking appliance; the third control module is used for controlling the cooking appliance to stop heating under the condition that the second temperature is higher than the target temperature; and controlling the cooking appliance to continue heating in the case that the second temperature is lower than the target temperature.

Optionally, the apparatus further comprises: and the fourth control module is used for controlling the cooking appliance to exhaust in the heating process after receiving the pressure-up signal.

Optionally, the second obtaining module is further configured to obtain a third temperature of the top of the cooking appliance when the exhaust time of the cooking appliance reaches a preset time; the comparison module is also used for comparing the third temperature with the preset temperature; the third control module is also used for controlling the cooking appliance to stop heating under the condition that the third temperature is higher than the preset temperature; and controlling the cooking appliance to continue heating under the condition that the third temperature is lower than the preset temperature.

Optionally, the preset time is determined based on a difference between the preset boiling point and the first temperature by: the matching module is used for matching the difference value with the second interval set, wherein if the maximum value of a third interval in the second interval set is smaller than the minimum value of a fourth interval, the time corresponding to the third interval is longer than the time corresponding to the fourth interval; and the third acquisition module is used for acquiring the time corresponding to the interval matched with the difference value in the second interval set to obtain the preset time.

Optionally, the third control module is further configured to control the cooking appliance to stop heating if the first temperature is greater than the target temperature; and controlling the cooking appliance to continue heating when the first temperature is lower than the target temperature.

According to the embodiment of the invention, a cooking appliance is also provided. The cooking appliance may perform the cooking control method provided in the above embodiments, and the preferred embodiment is the same as that described in the above embodiments, and is not described herein again. The cooking control device provided in the above embodiments may be integrated into a cooking appliance.

Fig. 4 is a schematic view of a cooking appliance according to an embodiment of the present invention, as shown in fig. 4, the cooking appliance including: a pressure-up detection device 42, a temperature sensor 44, and a controller 46, wherein the controller 46 is connected to the pressure-up detection device 42 and the temperature sensor 44.

Wherein, the upper pressure detection device 42 is used for outputting an upper pressure signal; the temperature sensor 44 is used for collecting a first temperature of the top of the cooking utensil; the controller 46 is configured to control the cooking appliance to heat according to a first power, compare the first temperature collected by the temperature sensor 44 with a preset boiling point when receiving an upper pressure signal output by the upper pressure detection device 42, determine a second power, and control the cooking appliance to heat according to the second power, where the second power is less than or equal to the first power.

Specifically, the pressing detection device 42 may be an opening stop rod, a reed switch, or the like, but is not limited thereto, and may be other devices capable of determining the pressing of the cooking appliance. The temperature sensor 44 may be an NTC disposed on top. The controller 46 may be a main controller of the cooking appliance, and may be a single chip, an integrated circuit, or the like, but is not limited thereto, and the present invention is not limited thereto.

Optionally, the controller 46 includes: and the processing module is connected with the upper pressure detection device 42 and the temperature sensor 44 and is used for acquiring the difference value between the preset boiling point and the first temperature and determining the second power based on the difference value.

Optionally, the processing module is further configured to compare the difference with a preset value, and determine the first power as the second power when the difference is smaller than or equal to the preset value; and reducing the first power to obtain a second power under the condition that the difference value is larger than a preset value.

Optionally, the processing module is further configured to match the difference with the first interval set, and obtain a power corresponding to an interval in the first interval set, where the power corresponding to the first interval is greater than the power corresponding to the second interval, and both the power corresponding to the first interval and the power corresponding to the second interval are less than the first power, if a maximum value of the first interval in the first interval set is less than a minimum value of the second interval.

Optionally, the controller 46 is further configured to compare the second temperature collected by the temperature sensor 44 with a target temperature, and control the cooking appliance to stop heating if the second temperature is greater than the target temperature, and control the cooking appliance to continue heating if the second temperature is less than the target temperature, where the target temperature is less than a preset temperature corresponding to the set pressure of the cooking appliance.

Optionally, the controller 46 is further configured to control the cooking appliance to exhaust air during heating after receiving the pressure-up signal.

Optionally, the controller 46 is further configured to compare the third temperature collected by the temperature sensor 44 with the preset temperature if the exhaust time of the cooking appliance reaches the preset time, control the cooking appliance to stop heating if the third temperature is greater than the preset temperature, and control the cooking appliance to continue heating if the third temperature is less than the preset temperature.

Optionally, the controller 46 is further configured to determine the preset time based on a difference between the preset boiling point and the first temperature by: and matching the difference value with the second interval set, and acquiring the time corresponding to the interval matched with the difference value in the second interval set to obtain preset time, wherein if the maximum value of a third interval in the second interval set is smaller than the minimum value of a fourth interval, the time corresponding to the third interval is larger than the time corresponding to the fourth interval.

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:

controlling the cooking appliance to heat according to the first power;

acquiring a first temperature of the top of the cooking appliance in case of receiving an up-pressure signal;

comparing the first temperature with a preset boiling point, and determining second power, wherein the second power is less than or equal to the first power;

and controlling the cooking appliance to heat according to the second power.

2. The method of claim 1, wherein comparing the first temperature to a preset boiling point and determining a second power comprises:

acquiring a difference value between the preset boiling point and the first temperature;

determining the second power based on the difference.

3. The method of claim 2, wherein determining the second power based on the difference comprises:

comparing the difference value with a preset value;

determining the first power as the second power when the difference is less than or equal to the preset value;

and reducing the first power to obtain the second power under the condition that the difference value is larger than the preset value.

4. The method of claim 3, wherein reducing the first power to obtain the second power comprises:

matching the difference value with a first interval set, wherein if the maximum value of a first interval in the first interval set is smaller than the minimum value of a second interval, the power corresponding to the first interval is larger than the power corresponding to the second interval, and the power corresponding to the first interval and the power corresponding to the second interval are both smaller than the first power;

and acquiring the power corresponding to the interval matched with the difference value in the first interval set to obtain the second power.

5. The method of claim 1, wherein in controlling the cooking appliance to heat at the second power, the method further comprises:

acquiring a second temperature of the top of the cooking appliance;

comparing the second temperature with a target temperature, wherein the target temperature is less than a preset temperature corresponding to a set pressure of the cooking appliance;

controlling the cooking appliance to stop heating when the second temperature is higher than the target temperature;

and controlling the cooking appliance to continue heating when the second temperature is lower than the target temperature.

6. The method of claim 5, wherein the target temperature is a sum of the first temperature and a preset temperature increment, wherein the preset temperature increment is a difference between the preset temperature and the preset boiling point.

7. The method according to any one of claims 1 to 6, wherein the cooking appliance is controlled to exhaust during heating after receiving the pressure-up signal.

8. The method of claim 7, wherein in case the exhaust time of the cooking appliance reaches a preset time, the method further comprises:

acquiring a third temperature of the top of the cooking appliance;

comparing the third temperature with a preset temperature;

controlling the cooking appliance to stop heating when the third temperature is higher than the preset temperature;

and controlling the cooking appliance to continue heating under the condition that the third temperature is lower than the preset temperature.

9. The method of claim 8, wherein the preset time is determined based on a difference between the preset boiling point and the first temperature.

10. The method of claim 9, wherein the preset time is determined based on the difference by:

matching the difference value with a second interval set, wherein if the maximum value of a third interval in the second interval set is smaller than the minimum value of a fourth interval, the time corresponding to the third interval is longer than the time corresponding to the fourth interval;

and acquiring the time corresponding to the interval matched with the difference value in the second interval set to obtain the preset time.

11. A cooking control device, comprising:

the first control module is used for controlling the cooking appliance to heat according to first power;

the first acquisition module is used for acquiring a first temperature of the top of the cooking appliance under the condition of receiving the pressure-up signal;

the determining module is used for comparing the first temperature with a preset boiling point and determining second power, wherein the second power is less than or equal to the first power;

and the second control module is used for controlling the cooking appliance to heat according to the second power.

12. The apparatus of claim 11, wherein the determining module comprises:

the acquiring unit is used for acquiring the difference value between the preset boiling point and the first temperature;

a determining unit configured to determine the second power based on the difference.

13. A cooking appliance, comprising:

the upper pressure detection device is used for outputting an upper pressure signal;

a temperature sensor for acquiring a first temperature of a top of the cooking appliance;

and the controller is connected with the upper pressure detection device and the temperature sensor and is used for controlling the cooking appliance to heat according to first power, comparing the first temperature acquired by the temperature sensor with a preset boiling point under the condition of receiving the upper pressure signal output by the upper pressure detection device, determining second power and controlling the cooking appliance to heat according to the second power, wherein the second power is less than or equal to the first power.

14. The cooking appliance of claim 13, wherein the controller comprises:

and the processing module is connected with the upper pressure detection device and the temperature sensor and used for acquiring the difference value between the preset boiling point and the first temperature and determining the second power based on the difference value.

15. The cooking appliance of claim 13, wherein the cooking appliance is an electric pressure cooker.

16. A storage medium characterized by comprising a stored program, wherein an apparatus in which the storage medium is located is controlled to execute the cooking control method according to any one of claims 1 to 10 when the program is executed.

17. 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 10 when running.