CN110840243B - Pressure-reducing cover-opening control method for pressure cooking appliance and pressure cooking appliance - Google Patents
Pressure-reducing cover-opening control method for pressure cooking appliance and pressure cooking appliance Download PDFInfo
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- CN110840243B CN110840243B CN201910917687.8A CN201910917687A CN110840243B CN 110840243 B CN110840243 B CN 110840243B CN 201910917687 A CN201910917687 A CN 201910917687A CN 110840243 B CN110840243 B CN 110840243B
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
- A47J27/0802—Control mechanisms for pressure-cookers
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Abstract
The application discloses pressurization cooking utensil step-down uncapping control method and pressurization cooking utensil, the method includes: in the pressure reduction and exhaust stage, if the temperature of the inner container is in a preset steady state judgment temperature interval, detecting whether the temperature of the inner container is in a first steady state, controlling the pressure cooking appliance to exhaust, and if so, entering a balanced uncovering stage; and in the balanced uncovering stage, the pressurizing cooking appliance is enabled to be in an air exhaustible state, whether the temperature of the inner container is in a second stable state or not is detected, if yes, the pressurizing cooking appliance is controlled to unlock and uncover, otherwise, if the temperature of the inner container is not lower than the preset risk temperature, the pressurizing cooking appliance is controlled to be switched to an air exhaustible state. This application divides two stages to realize that safer step-down uncaps, and step-down exhaust stage is used for quick step-down, and the balanced stage of uncapping is used for preventing to exhaust the risk that the back reboiling leads to overflowing the pot.
Description
Technical Field
The application relates to the technical field of cooking control, in particular to a pressure-reducing and cover-opening control method for a pressure cooking appliance, the pressure cooking appliance and a computer-readable storage medium.
Background
The pressurizing cooking appliance improves the cooking effect of food materials by pressurizing, so that the food materials can quickly become soft and are easy to taste, for example, an electric pressure cooker is a very common pressurizing cooking appliance.
In practical use, the pressure cooking utensil can be opened after being exhausted and depressurized. In the prior art, a fixed threshold temperature is set for the exhaust process of a pressure cooking appliance which exhausts through electric control, when the temperature is reduced to the threshold temperature, the cover can be opened after the exhaust is finished, then, the pressure cooking appliance is kept in an exhaust state all the time, standby or heat preservation is carried out, and the cooking completion is prompted.
However, the existing scheme of exhausting and uncovering still has a large risk and is not safe enough in some scenes.
For example, when the pressure cooking appliance is in a plateau environment, since the boiling point of water decreases as the altitude increases, for a fixed threshold temperature set above, if the boiling point of water at the current altitude is greater than the threshold temperature, the lid opening time is increased, whereas if the boiling point of water at the current altitude is lower than the threshold temperature, if the lid is opened in the case where the threshold temperature is detected, the inside of the appliance inner container may still be boiling, and there is a risk of pot overflow.
For example, in a pressure cooking appliance with water cooling, the water cooling generally cools the inside of the upper lid of the appliance directly, and the temperature sensor is generally disposed near the inside of the upper lid, so that the water cooling interferes with the temperature detection, the detected temperature is lower than the actual temperature in the appliance inner container, and if the lid is opened when the threshold temperature is detected, the actual temperature in the appliance inner container is higher than the threshold temperature, and the appliance inner container may still boil, thereby risking pot overflow.
Based on this, a safer decompression uncapping scheme is needed.
Disclosure of Invention
The embodiment of the application provides a pressure-reducing and cover-opening control method for a pressure cooking appliance, the pressure cooking appliance and a computer-readable storage medium, which are used for solving the following technical problems in the prior art: the existing exhaust pressure reduction scheme still has great risk and is not safe enough in some scenes.
The embodiment of the application adopts the following technical scheme:
a pressure-reducing cover-opening control method for a pressure cooking appliance, wherein the pressure cooking appliance comprises a control chip, an upper cover, an inner container, an opening and closing cover driving mechanism, an automatic locking mechanism, an exhaust mechanism and a temperature sensor, and the method comprises the following steps:
in the pressure reduction and exhaust stage, if the temperature of the inner container is in a preset steady state judgment temperature interval, detecting whether the temperature of the inner container is in a first steady state, controlling the pressurization cooking appliance to exhaust, and if so, entering a balanced uncovering stage;
and in the balanced uncovering stage, the pressurizing cooking appliance is enabled to be in an exhaust state, whether the temperature of the inner container is in a second stable state or not is detected, if yes, the pressurizing cooking appliance is controlled to unlock and uncover, otherwise, if the temperature of the inner container is not lower than the preset risk temperature, the pressurizing cooking appliance is controlled to be switched to an inexhaustible state.
Optionally, after controlling the pressurized cooking appliance to switch to the non-venting state, the method further comprises:
controlling the pressurized cooking appliance back to the reduced pressure exhaust phase.
Optionally, the method further comprises:
in the pressure reduction and exhaust stage, if the temperature of the inner container is lower than the steady state judgment temperature interval, the pressure cooking appliance is in an exhaust state, and the balance uncovering stage is entered.
Optionally, the method further comprises:
and in the pressure reduction and exhaust stage, if the temperature of the inner container is higher than the steady state judgment temperature interval, waiting for the temperature of the inner container to be reduced to be within the steady state judgment temperature interval.
Optionally, detecting that the liner temperature is not in the second steady state and the liner temperature is not lower than the predetermined risk temperature includes:
detecting whether the temperature of the inner container is not lower than a preset warning temperature, wherein the warning temperature is lower than the risk temperature;
if the detection result is negative within the preset timing time, judging that the temperature of the inner container is in a second stable state;
otherwise, judging that the temperature of the inner container is not in the second stable state, and resetting the timing time to continue the detection;
and detecting that the temperature of the inner container is not lower than the risk temperature.
Optionally, the warning temperature and the risk temperature are both expressed by analog-to-digital (AD) values, and the accuracy of the AD values is higher than that of the steady-state determination temperature interval.
Optionally, controlling the pressurized cooking appliance to exhaust comprises:
controlling the pressure cooking appliance to exhaust in one of the following ways according to the type of food being cooked: long exhaust, intermittent exhaust;
before controlling the pressurized cooking appliance to exhaust, the method further comprises:
determining that the type of food cooked does not belong to a predetermined non-vented food type, the non-vented food type including at least a congee type;
and if the type of the cooked food belongs to the type of the food which is not exhausted, controlling the pressure cooking appliance not to exhaust.
Optionally, the first and/or second steady state comprises: the temperature of the inner container is at the corresponding designated temperature and continues for the corresponding designated time.
Optionally, the temperature sensor includes a top temperature sensor disposed at the top of the inner container, and the temperature of the inner container is detected by the top temperature sensor.
A pressure cooking utensil is characterized by comprising a control chip, an upper cover, an inner container, an opening and closing cover driving mechanism, an automatic locking mechanism, an exhaust mechanism and a temperature sensor; the control chip comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, and the processor executes the computer program to realize the pressure-reducing and cover-opening control method of the pressure cooking appliance.
A computer-readable storage medium storing a computer program which, when executed by a processor, implements the above-described reduced-pressure lid-opening control method for a pressure cooking appliance.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects: the pressure reduction uncovering is realized more safely in two stages, the pressure reduction exhaust stage is used for quickly reducing pressure, and the balance uncovering stage is used for preventing the risk of overflowing caused by reboiling after exhaust; moreover, the boiling condition is judged based on the two sections of temperatures divided by the warning temperature and the risk temperature in the second stage, so that the fault tolerance of the temperature detection result which is possibly inaccurate is improved, and the pressure reduction and uncovering are facilitated to be safer.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic view of a partial structure of a pressure cooking appliance provided in some embodiments of the present application;
fig. 2 is a schematic flow chart of a method for controlling a pressure-reducing cover opening of a pressure cooking appliance according to some embodiments of the present disclosure;
fig. 3 is a schematic flow chart of an implementation of the depressurization venting phase of the depressurization lid opening control method of the pressure cooker of fig. 2 in an application scenario provided by some embodiments of the present application;
fig. 4 is a schematic flow chart of an implementation of a balanced uncapping stage of the method for controlling a pressure-reducing uncapping of a pressure cooking appliance of fig. 2 in an application scenario provided by some embodiments of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, 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 application.
The scheme of this application can make pressurization cooking utensil exhaust uncap more safely. For the condition that pressurization cooking utensil is in higher elevation, and to the pressurization cooking utensil that contains water cooling system exhaust apparatus, the scheme of this application is all applicable, can obtain better effect moreover. No matter be the pressurization cooking utensil of automatic uncapping or manual uncapping, the scheme of this application is also suitable for, to the pressurization cooking utensil of manual uncapping, can indicate the manual uncapping of user after can uncapping safely.
Fig. 1 is a schematic view of a partial structure of a pressure cooking appliance according to some embodiments of the present disclosure, and the following embodiments are described by taking the pressure cooking appliance in fig. 1 as an example.
The pressure cooking device shown in fig. 1 includes a control chip, an upper cover, an inner container, a lid opening/closing driving mechanism, an automatic closing mechanism, an exhaust mechanism, a temperature sensor, and other components such as a heating module and a sealing ring, which are not shown. The lid opening/closing drive mechanism is used for automatically opening/closing the lid of the pressure cooking appliance. The automatic locking mechanism is used for automatically locking and unlocking the upper cover (particularly, an inner cover which the upper cover may comprise) and the inner container, and the pressure cooking appliance can be opened only when the automatic locking mechanism is unlocked; the automatic locking mechanism comprises a caliper, for example, and the caliper moves in the radial direction to clamp the edges of the inner container and the inner side of the upper cover, so that locking is realized. The temperature sensor is used for detecting the temperature of the liner, and as for the situation in the background art, the temperature sensor may include a top temperature sensor disposed at the top of the liner (for example, inside the upper cover and the inner cover), and the temperature of the liner is detected by the top temperature sensor.
Fig. 2 is a schematic flow chart of a pressure-reducing cover-opening control method for a pressure cooking appliance according to some embodiments of the present disclosure, where the flow chart includes two stages, a pressure-reducing exhaust stage and a balanced cover-opening stage. The process comprises the following steps:
s200: in the pressure reduction and exhaust stage, if the temperature of the inner container is in a preset steady state judgment temperature interval, detecting whether the temperature of the inner container is in a first steady state, controlling the pressurization cooking appliance to exhaust, and if so, entering a balanced uncovering stage.
In some embodiments of the application, the temperature of the inner container is detected by the temperature sensor, the accuracy of the temperature is influenced by the specific position of the temperature sensor, and the temperature of the inner container is continuously monitored and analyzed by the aid of the plurality of temperature thresholds so as to more reliably judge the time suitable for uncovering.
If the liner temperature is in the steady state determination temperature interval, the liner is considered to be in a critical interval of pressure and no pressure, and steps such as detecting the steady state need to be further executed to finally determine the pressure condition in the liner. If the temperature of the inner container is higher than the steady-state judgment temperature interval, the pressure in the inner container can be directly considered to be possibly higher, if the exhaust or cover opening risk is large, the exhaust can be temporarily not carried out, the temperature can be waited to naturally drop, or the temperature can be reduced in an accelerated manner by using active cooling measures (such as water cooling measures, air cooling measures and the like). If the temperature of the inner container is lower than the steady state judgment temperature interval, the pressure in the inner container can be directly considered to be lower or even possibly no pressure, and at the moment, gas exhaust or even cover opening can be tried.
In some embodiments of the present application, the first steady state reflects a state in which the temperature of the liner is relatively stable within the steady state determination temperature interval, and the specific requirement for multiple stability depends on the predefinition of the first steady state. For example, one can define: and if the temperature of the inner container is at the designated temperature and continues for the corresponding designated time, judging that the inner container is in a first stable state. As another example, one can define: and if the temperature of the inner container is in the steady state judgment temperature interval, the fluctuation degree does not exceed the specified temperature degree and continues for the corresponding specified time, judging that the temperature is in a first steady state. As another example, one can define: and if the temperature of the inner container is at the designated temperature and the temperature is kept to be reduced for the corresponding designated time, judging that the temperature is in the first stable state. For the first steady state, the specified temperature is, for example, any temperature within the steady state determination temperature interval.
In some embodiments of the present application, controlling the pressure cooking appliance to exhaust may specifically include: the exhaust mechanism is controlled to be in an exhaust-enabled state. For example, an exhaust valve of the exhaust mechanism is opened. In this case, even if there is no pressure in the inner container, the pressure cooker can discharge no gas, but this does not affect the execution of the control operation of the gas discharge mechanism.
Further, if necessary, the exhaust mode of the exhaust mechanism may be specifically controlled, for example, a long exhaust mode or an intermittent exhaust mode. The manner in which the gas is vented may depend on the type of food being cooked, or alternatively, the temperature of the liner.
Taking food types as an example, for rice types, because the amount of water to be retained is small, a long-term air exhaust mode can be adopted, and no problem exists in more water loss; and for the stew or soup type, because the amount of water needing to be reserved is large, an intermittent air exhausting mode can be adopted, and the loss of moisture is reduced. In addition, for thick liquid food such as porridge type, the exhaust mechanism is blocked and risks are caused due to exhaust, so that the pressure cooking appliance can be controlled not to exhaust; alternatively, venting may be considered unless the temperature falls within a safe enough range, and may be meaningless because the pressure also tends to drop.
S202: and in the balanced uncovering stage, the pressurizing cooking appliance is enabled to be in an exhaust state, whether the temperature of the inner container is in a second stable state or not is detected, if yes, the pressurizing cooking appliance is controlled to unlock and uncover, otherwise, if the temperature of the inner container is not lower than the preset risk temperature, the pressurizing cooking appliance is controlled to be switched to an inexhaustible state.
In practical applications, although the exhaust is performed during the depressurization exhaust stage, the pressure may still exist in the liner even if the liner temperature is in the first steady state. For safety, the exhaust may be attempted continuously during the equilibrium uncapping phase, and the second steady state may be used as a condition for determining whether to uncap. The second stable state is similar to the first stable state and can be defined in a similar manner, and of course, specific parameters such as specified temperature and specified time which may be used in the definition may be different from those in the first stable state.
In some embodiments of the present application, during venting of the pressure cooker, the pressure within the bladder decreases such that the boiling point of water within the bladder decreases, which may cause reboiling and possibly an increase in temperature. When the temperature is higher than the risk temperature, if the cooker is likely to overflow when the exhaust is continued, the pressure cooking utensil can be controlled to be switched to the non-exhaust state, the exhaust is not performed temporarily, and the cover opening is not suitable at the moment.
Through the method of fig. 2, a safer decompression uncapping is realized in two stages, a decompression exhaust stage is used for fast decompression, and a balance uncapping stage is used for preventing the risk of overflowing caused by reboiling after exhaust.
Based on the method of fig. 2, some embodiments of the present application also provide some specific embodiments of the method, and further embodiments, and further description is provided below.
In some embodiments of the application, in the step-down exhaust stage, if the temperature of the inner container is lower than the steady state judgment temperature interval, the pressurizing cooking appliance is in the exhaust state, and enters the balanced uncovering stage, so that the safety is ensured, the first steady state does not need to be judged, and the exhaust process is accelerated. In the pressure reduction and exhaust stage, if the temperature of the inner container is higher than the steady state judgment temperature interval, the temperature of the inner container is waited to be reduced to be within the steady state judgment temperature interval, so that the situation that too much time is wasted to judge the first steady state can be avoided, because under the condition, the safety is not high, and the temperature change is often frequent and is relatively unstable.
In some embodiments of the present application, two stages of temperature control are employed during the equilibrium decap stage. Specifically, in addition to the risk temperature, a guard temperature lower than the risk temperature is set. The warning temperature can be used for monitoring the temperature rise condition of the liner in comparison with the first stable state after the liner temperature enters the balanced uncapping stage, and based on the temperature rise condition, the warning temperature can be higher than the liner temperature in the first stable state. The warning temperature and the risk temperature may be fixed temperature values or dynamic relative temperatures, and for the latter case, for example, the temperature is higher than the temperature of the liner detected last time by a specified degree.
In the balanced uncovering stage, if the temperature of the liner is not lower than the warning temperature and lower than the risk temperature, the temperature of the liner is considered not to be in the second stable state temporarily at present, and the liner can be detected again.
Further, in the balanced uncapping stage, since the exhaust is performed before, the temperature of the liner is not easy to change drastically, but changes in a small amplitude, in order to accurately detect the small amplitude change, the temperature thresholds may not be represented in the form of degrees celsius, but may be represented by, for example, a high-precision temperature-reflecting AD value (which may be obtained by mapping the temperature to an electric signal and then digitizing the electric signal), and a temperature value represented in the same degree celsius may be made to correspond to a plurality of different AD values distributed in a staircase, that is, the plurality of AD values represent the temperature value.
Based on this, assuming that the liner temperature is expressed in degrees celsius, the warning temperature and the risk temperature may be expressed by, for example, an AD value having higher accuracy than the steady-state determination temperature section. In addition, the scheme of the application can also be realized by replacing the degree centigrade with the AD value with relatively low precision.
According to the foregoing description, some embodiments of the present application further provide an implementation flow diagram of the depressurization and venting phase of the method for controlling depressurization and decap of the pressure cooker in fig. 2 in an application scenario, as shown in fig. 3 and 4, fig. 3 is an implementation flow diagram of the depressurization and venting phase, and fig. 4 is an implementation flow diagram of the equilibrium decap phase.
In this application scenario, assuming that the temperature of the inner container is the temperature detected by the top temperature sensor, which is denoted as TNow, the last detection result of TNow is recorded by TOld, which is called memory temperature, the steady state determination temperature interval is 97-100 ℃, the designated time for determining the first steady state is denoted as T1, which is 60 seconds, for example, and is counted by T1, and T1 is incremented by 1 per second, and the designated time for determining the second steady state is denoted as T2, which is 30 seconds, for example, and is counted by T2, and T2 is incremented by 1 per second. The reason why 97 ℃ is taken here is that, according to experience, the environment in which the pressure cooking appliance is frequently used is approximately 900 m at the altitude on average, and the boiling point of water at the altitude of 900 m is approximately 97 ℃.
The flow in fig. 3 includes the following steps:
4.1, judging whether the current TNow is not lower than 97 ℃, if so, entering the step 4.2, and if not, entering the step 4.7;
4.2, judging whether the current TNow is lower than 100 ℃, if so, entering a step 4.3, otherwise, clearing the timing time t for judging the first steady state, updating the memory temperature TOld by the current TNow (namely, performing assignment operation TOld is TNow), and entering a step 4.5;
4.3, judging whether the current TNow is equal to TOld, if so, entering the step 4.4, otherwise, clearing t1, updating the memory temperature TOld by using the current TNow, and entering the step 4.5;
4.4, entering the step to show that the current TNow is equal to TOld, adding 1 to t every second, and entering the step 4.5;
4.5, according to the type of food cooked in the inner container or the selection of the cooking function, correspondingly controlling the air exhausting mechanism, such as: carrying out long exhaust, intermittent exhaust or no exhaust, and entering the step 4.6;
4.6, judging whether T is greater than T1, if yes, entering the step 4.7, otherwise, returning to the step 4.2;
4.7, entering this step to show that the liner temperature may be stable for a certain time, the liner may be in a critical interval between pressure and non-pressure, an AD value corresponding to TNow is stored, and is recorded as TADnow, another variable is taken to be correspondingly used for recording the TADnow detected, and is recorded as TADold, the TADold is updated by the current TADnow (that is, the TADold is subjected to the assignment operation TADold — TADnow), t is cleared, the preparation is continued to be used for determining the second steady state, and the exhaust mechanism is controlled to be in the long exhaust state, and the balanced uncapping stage is entered, then the flow in fig. 4 is executed.
The AD values have been briefly described above and are further described here. Usually, on a hardware circuit, a temperature sensor is realized by using a temperature measuring resistor, a temperature signal of the temperature measuring resistor is converted into an electrical signal, and then the electrical signal is converted into a digital signal, so that an AD value is obtained for program control. Generally, the temperature measuring resistor corresponding to the same temperature is in a small range, and different resistance values correspond to different electric signals, so that the same temperature can correspond to one or more AD values, and the AD values are directly used for judging the higher temperature precision. Some of the aforementioned temperature values, such as the end point temperature of the steady-state determination temperature section, are generally subjected to approximation processing such as averaging with respect to the AD value, and one AD value corresponding to one temperature of the composition is used, which is not highly accurate.
The flow in fig. 4 includes the following steps:
5.1, judging whether the timing time T for judging the second stable state is greater than T2, if so, finishing the whole pressure reduction process, and controlling the pressure cooking appliance to unlock the cover or enter a standby state, otherwise, entering the step 5.2;
5.2, adding 1 to t every second, judging whether the current TADNow is not less than TADIOL +1 (assuming that TADIOL +1 is the warning temperature), if so, indicating that the temperature is increased, resetting t, timing again, and if not, returning to the step 5.1, wherein the inner liner is probably in micro boiling state and entering the step 5.3;
it should be noted that, although the AD value is increased when the temperature rises, the AD value may also decrease when the temperature rises due to various factors such as the temperature measuring circuit, the temperature measuring resistor selection type, the program control, etc., and for this case, the corresponding logic should be implemented in reverse;
and 5.3, judging whether the current TADNow is not less than TADIOL +2 (assuming that TADIOL +2 is a risk temperature), if so, clearing t, preparing for determining the first stable state again, updating TADIOL, wherein the liner is possibly boiling, the pressure is relatively large, the exhaust can be closed, and the step 4.1 in the pressure reduction exhaust stage is returned, otherwise, the step 5.1 is returned.
Based on the same idea, some embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the method for controlling opening and closing of a pressure cooker under reduced pressure is implemented.
The embodiments in the present application are described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (9)
1. A pressure-reducing cover-opening control method for a pressure cooking appliance is characterized in that the pressure cooking appliance comprises a control chip, an upper cover, an inner container, an opening and closing cover driving mechanism, an automatic locking mechanism, an exhaust mechanism and a temperature sensor, and the method comprises the following steps:
in the pressure reduction and exhaust stage, if the temperature of the inner container is in a preset steady state judgment temperature interval, detecting whether the temperature of the inner container is in a first steady state, controlling the pressurization cooking appliance to exhaust, if so, entering a balanced uncovering stage, otherwise, controlling the pressurization cooking appliance to be switched to a non-exhaust state, and waiting for the temperature of the inner container to be reduced to be within the steady state judgment temperature interval;
and in the balanced uncovering stage, the pressurizing cooking appliance is enabled to be in an exhaust state, whether the temperature of the inner container is in a second stable state or not is detected, if yes, the pressurizing cooking appliance is controlled to unlock and uncover, otherwise, if the temperature of the inner container is not lower than the preset risk temperature, the pressurizing cooking appliance is controlled to be switched to an inexhaustible state.
2. The pressure reducing lid opening control method for the pressure cooking appliance according to claim 1, wherein after controlling the pressure cooking appliance to switch to the non-venting state, the method further comprises:
controlling the pressurized cooking appliance back to the reduced pressure exhaust phase.
3. The pressure reducing lid opening control method for a pressure cooking appliance as claimed in claim 1, wherein the method further comprises:
in the pressure reduction and exhaust stage, if the temperature of the inner container is lower than the steady state judgment temperature interval, the pressure cooking appliance is in an exhaust state, and the balance uncovering stage is entered.
4. The pressure-reducing cover-opening control method for the pressure cooking appliance according to claim 1, wherein the step of detecting that the temperature of the inner container is not in the second stable state and the temperature of the inner container is not lower than the preset risk temperature comprises the following steps:
detecting whether the temperature of the inner container is not lower than a preset warning temperature, wherein the warning temperature is lower than the risk temperature;
if the detection result is negative within the preset timing time, judging that the temperature of the inner container is in a second stable state;
otherwise, the temperature of the inner container is judged not to be in the second stable state, and the timing time is reset to continue the detection.
5. The pressure-cooker pressure-reducing lid-opening control method according to claim 4, wherein the alarm temperature and the risk temperature are both expressed by analog-to-digital AD values, and the precision of the AD values is higher than that of the steady-state determination temperature interval.
6. The pressure reducing and cover opening control method for the pressure cooking appliance according to claim 1, wherein the step of controlling the pressure cooking appliance to exhaust air comprises the following steps:
controlling the pressure cooking appliance to exhaust in one of the following ways according to the type of food being cooked: long exhaust, intermittent exhaust;
before controlling the pressurized cooking appliance to exhaust, the method further comprises:
determining that the type of food cooked does not belong to a predetermined non-vented food type, the non-vented food type including at least a congee type;
and if the type of the cooked food belongs to the type of the food which is not exhausted, controlling the pressure cooking appliance not to exhaust.
7. The pressure-reducing cover-opening control method for the pressure cooking appliance according to any one of claims 1 to 6, wherein the first stable state and/or the second stable state comprises: the temperature of the inner container is at the corresponding designated temperature and continues for the corresponding designated time.
8. The pressure-reducing cover-opening control method for the pressure cooking appliance according to any one of claims 1 to 6, wherein the temperature sensor comprises a top temperature sensor arranged at the top of the inner container, and the temperature of the inner container is detected by the top temperature sensor.
9. A pressure cooking utensil is characterized by comprising a control chip, an upper cover, an inner container, an opening and closing cover driving mechanism, an automatic locking mechanism, an exhaust mechanism and a temperature sensor; the control chip comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor implements the method of any one of the preceding claims 1 to 8 when executing the computer program.
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| CA3126261C (en) | 2017-08-09 | 2023-06-20 | Sharkninja Operating Llc | Cooking device and components thereof |
| CN212788226U (en) | 2019-02-25 | 2021-03-26 | 沙克忍者运营有限责任公司 | Cooking system |
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