CN113455893B - Pressure relief method and pressure relief device for cooking utensil - Google Patents
Pressure relief method and pressure relief device for cooking utensil Download PDFInfo
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- CN113455893B CN113455893B CN202110975497.9A CN202110975497A CN113455893B CN 113455893 B CN113455893 B CN 113455893B CN 202110975497 A CN202110975497 A CN 202110975497A CN 113455893 B CN113455893 B CN 113455893B
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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
- A47J27/09—Safety devices
- A47J27/092—Devices for automatically releasing pressure before opening
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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
- A47J27/09—Safety devices
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Abstract
The invention discloses a pressure relief method and a pressure relief device of a cooking appliance, wherein the pressure relief method comprises the following steps: acquiring characteristic parameters for representing the pressure in a pot of the cooking appliance; obtaining the current pressure in the cooker according to the characteristic parameters of the pressure in the cooker; acquiring a preset corresponding relation between the pressure in the cooker and the exhaust duty ratio; and obtaining the current exhaust duty ratio based on the preset corresponding relation between the pressure in the cooker and the exhaust duty ratio and the current pressure in the cooker, and controlling the cooking utensil to exhaust according to the current exhaust duty ratio. When the pressure in the cooker is higher, the exhaust valve is controlled to exhaust with a lower exhaust duty ratio, and when the pressure in the cooker is lower, the exhaust valve is controlled to exhaust with a higher exhaust duty ratio, so that the cooking appliance can be controlled to automatically select different exhaust duty ratios to exhaust according to different pressure environments in the cooker, auxiliary pressure relief is realized in the rapid pressure relief process, and the problem that food is easy to overflow in the exhaust process can be prevented.
Description
Technical Field
The invention relates to the field of cooking appliances, in particular to a pressure relief method and a pressure relief device of a cooking appliance.
Background
The electric pressure cooker has a quick cooking function and becomes an indispensable cooking utensil in modern fast-paced life. In order to further improve the cooking speed of the electric pressure cooker and shorten the pressure relief time, the electric pressure cooker with rapid cooling pressure relief is available in the market at present. However, when the electric pressure cooker is cooled rapidly, water vapor in the cooker is liquefied, the pressure in the cooker is reduced, the boiling point of liquid in the cooker is reduced, and the liquid boils out of the vapor to increase the pressure in the cooker, so that the circulation is realized, and a stable state is maintained. In the process, as the liquid in the pot is in a boiling state and the air is exhausted, the pressure relief speed is higher, and the liquid in the pot boils more intensely, so that the liquid is easy to overflow.
At present, in order to reduce the overflow of liquid in a pot, the exhaust time of a pressure cooker with a quick pressure relief function is extremely short, and the effect of auxiliary pressure relief through exhaust is low.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is that the existing pressure cooker with the rapid pressure relief function has extremely short exhaust time and low auxiliary pressure relief effect through exhaust, so that the embodiment of the invention provides a pressure relief method and a pressure relief device of a cooking appliance.
The embodiment of the invention provides a pressure relief method of a cooking appliance, which comprises the following steps: acquiring characteristic parameters for representing the pressure in a pot of the cooking appliance; obtaining the current pressure in the cooker according to the characteristic parameters of the pressure in the cooker; acquiring a preset corresponding relation between the pressure in the cooker and the exhaust duty ratio; and obtaining the current exhaust duty ratio based on the preset corresponding relation between the pressure in the cooker and the exhaust duty ratio and the current pressure in the cooker, and controlling the cooking utensil to exhaust according to the current exhaust duty ratio.
Optionally, the obtaining a current exhaust duty ratio based on the preset corresponding relationship between the pressure in the cooker and the exhaust duty ratio and the current pressure in the cooker includes: determining the current maximum exhaust duty ratio according to the corresponding relation between the pressure in the cooker and the exhaust duty ratio and the current pressure in the cooker; the current exhaust duty cycle is derived based on the current maximum exhaust duty cycle.
Optionally, after obtaining the preset corresponding relationship between the pressure in the cooker and the exhaust duty ratio, the method further includes: acquiring a plurality of pressure intervals; and determining the corresponding relation between each pressure interval and the exhaust duty ratio based on the corresponding relation between the pressure in the cooker and the exhaust duty ratio and a plurality of pressure intervals.
Optionally, the obtaining a current exhaust duty ratio based on the preset corresponding relationship between the pressure in the cooker and the exhaust duty ratio and the current pressure in the cooker includes: and determining the current duty ratio based on the corresponding relation between each pressure interval and the exhaust duty ratio and the pressure interval to which the current pressure in the cooker belongs.
Optionally, the plurality of pressure intervals comprises a first pressure interval, a second pressure interval, and a third pressure interval; the first pressure interval is: p >70 kpa; the range of the exhaust duty ratio corresponding to the first pressure interval is: 0< D ≦ 0.4; the second pressure interval is: 70kpa ≧ P ≧ 30 kpa; the range of the exhaust duty ratio corresponding to the second pressure interval is:
the third pressure interval is: p <30 kpa; the range of the exhaust duty ratio corresponding to the third pressure interval is:
wherein, P is the pressure in the cooker relative to the pressure of normal pressure; d is the exhaust duty cycle; t is the pressure relief time required for relieving the pressure from 110KPa to normal pressure by only adopting a quick pressure relief module without exhausting; v is the total volume of the cooked food material.
Optionally, the characteristic parameter characterizing the pressure in the pan of the cooking appliance includes any one of a current and a temperature in the pan.
Optionally, when the pressure in the pot of the cooking appliance is characterized by the temperature in the pot, the relationship between the temperature in the pot and the pressure in the pot is P-5T-500; wherein P is the pressure in the cooker, and T is the temperature in the cooker.
The embodiment of the invention provides a pressure relief device of a cooking appliance, which comprises: the first acquisition module is used for acquiring characteristic parameters for representing the pressure in the pot of the cooking appliance; the processing module is used for obtaining the current pressure in the cooker according to the characteristic parameters of the pressure in the cooker; the second acquisition module is used for acquiring the preset corresponding relation between the pressure in the cooker and the exhaust duty ratio; and the control module is used for obtaining the current exhaust duty ratio based on the preset corresponding relation between the pressure in the cooker and the exhaust duty ratio and the current pressure in the cooker and controlling the cooking appliance to exhaust according to the current exhaust duty ratio.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a pressure relief method of a cooking appliance, which comprises the following steps: acquiring characteristic parameters for representing the pressure in a pot of the cooking appliance; obtaining the current pressure in the cooker according to the characteristic parameters of the pressure in the cooker; acquiring a preset corresponding relation between the pressure in the cooker and the exhaust duty ratio; and obtaining the current exhaust duty ratio based on the preset corresponding relation between the pressure in the cooker and the exhaust duty ratio and the current pressure in the cooker, and controlling the cooking utensil to exhaust according to the current exhaust duty ratio.
So set up, when the pressure in the pot is higher, control discharge valve exhausts with lower exhaust duty cycle, when the pressure in the pot is lower, control discharge valve exhausts with higher exhaust duty cycle to can control cooking utensil and exhaust according to the different exhaust duty cycle of the interior pressure environment automatic selection of difference of pot, realize at the supplementary pressure release of quick pressure release in-process, thereby can prevent the problem that the food spills over easily among the exhaust process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic illustration of a pressure let-down method according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a first pressure relief process according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a second pressure relief process according to an embodiment of the invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
The electric pressure cooker has a quick cooking function and becomes an indispensable cooking utensil in modern fast-paced life. In order to further improve the cooking speed of the electric pressure cooker and shorten the pressure relief time, the electric pressure cooker with rapid cooling pressure relief is available in the market at present. However, when the electric pressure cooker is cooled rapidly, water vapor in the cooker is liquefied, the pressure in the cooker is reduced, the boiling point of liquid in the cooker is reduced, and the liquid boils out of the vapor to increase the pressure in the cooker, so that the circulation is realized, and a stable state is maintained. In the process, as the liquid in the pot is in a boiling state and the air is exhausted, the pressure relief speed is higher, and the liquid in the pot boils more intensely, so that the liquid is easy to overflow. At present, in order to reduce the overflow of liquid in a pot, the exhaust time of a pressure cooker with a quick pressure relief function is extremely short, and the effect of auxiliary pressure relief through exhaust is low.
The technical problem to be solved by the embodiment of the invention is that the existing pressure cooker with the rapid pressure relief function has extremely short exhaust time and low auxiliary pressure relief effect through exhaust, so that the embodiment of the invention provides a pressure relief method and a pressure relief device of a cooking appliance.
Example 1
As shown in fig. 1, the present invention provides a pressure relief method for a cooking appliance, such as a pressure cooker, an electric cooker, etc. having a rapid pressure relief function. The cooking appliance can comprise a pressure sensor, an exhaust control module, an exhaust valve, a quick pressure relief module, a temperature sensor and a pot body. The rapid pressure relief module can be used in cooling pots for achieving rapid pressure relief, such as air cooling pressure relief, water mist type air cooling pressure relief and the like. The exhaust control module can adopt exhaust control modes such as electromagnetic valve control exhaust, electromagnetic shifter jacking weight control exhaust and the like.
Specifically, the pressure relief method comprises the following steps:
s1, acquiring characteristic parameters for representing the pressure in the pot of the cooking appliance;
the pressure in the cooker of the cooking appliance can be measured in various ways, and the corresponding pressure in the cooker can be obtained by converting various characteristic parameters representing the pressure in the cooker of the cooking appliance.
For example, a pressure sensor may be directly disposed inside the cooking appliance, and the pressure in the pot of the cooking appliance may be directly detected by the pressure sensor. For example, a temperature sensor may be provided inside the cooking appliance, and the pressure inside the pot may be obtained by temperature conversion. For example, the operating current of the cooking appliance during operation may be detected, and the pressure in the pot may be obtained from the correspondence between the current and the pressure in the pot.
Of course, the embodiment of the present invention is only an example of the characteristic parameter for representing the pressure in the pot of the cooking appliance, and is not limited thereto, and a person skilled in the art may change the characteristic parameter for representing the pressure in the pot of the cooking appliance according to the actual situation, so as to achieve the same technical effect.
S2, obtaining the current pressure in the cooker according to the characteristic parameters of the pressure in the cooker;
as described in step S1, the corresponding pressure in the pot can be obtained by converting the characteristic parameter representing the pressure in the pot of the cooking appliance, which is not described herein again.
S3, acquiring a preset corresponding relation between the pressure in the cooker and the exhaust duty ratio;
in the embodiment of the invention, the corresponding relation between the pressure in the cooker and the exhaust duty ratio can be obtained through multiple times of simulation calculation and summarization. For example, the corresponding relationship between the pressure in the cooker and the exhaust duty ratio can be a comparison table of the pressure in the cooker and the exhaust duty ratio, and can also be a functional relationship between the pressure in the cooker and the exhaust duty ratio. The exhaust duty is the time it takes to exhaust every 60 s.
Of course, the embodiment of the present invention is only to illustrate the corresponding relationship between the pressure in the cooker and the exhaust duty ratio, and is not limited thereto, and those skilled in the art can change the corresponding relationship between the pressure in the cooker and the exhaust duty ratio according to actual situations, so as to achieve the same technical effect.
S4, obtaining the current exhaust duty ratio based on the preset corresponding relation between the pressure in the cooker and the exhaust duty ratio and the current pressure in the cooker, and controlling the cooking appliance to exhaust according to the current exhaust duty ratio.
After the corresponding relation between the preset pressure in the cooker and the exhaust duty ratio is obtained, the current exhaust duty ratio corresponding to the current pressure in the cooker can be obtained through conversion or the pressure in the cooker is directly measured, and the cooking appliance is controlled to exhaust according to the current exhaust duty ratio.
So set up, when the pressure in the pot is higher, control discharge valve exhausts with lower exhaust duty cycle, when the pressure in the pot is lower, control discharge valve exhausts with higher exhaust duty cycle to can control cooking utensil and exhaust according to the different exhaust duty cycle of the interior pressure environment automatic selection of difference of pot, realize at the supplementary pressure release of quick pressure release in-process, thereby can prevent the problem that the food spills over easily among the exhaust process.
In the exhaust process of the cooking appliance, the quick pressure relief module is started, the pressure in the cooker can be measured through the pressure sensor, and the exhaust control module performs exhaust auxiliary pressure relief according to preset exhaust logic according to the pressure in the cooker until the pressure in the pressure cooker is relieved. Specifically, as shown in fig. 2, in the present embodiment, a plurality of pressure values may be preset, and the first pressure value, the second pressure value, and the normal pressure may be sequentially set from a large pressure value to a small pressure value.
Specifically, when pressure relief is started, the cooking appliance detects that the pressure in the cooker is an initial pressure value, when the initial pressure value is greater than normal pressure and is greater than a first pressure value, the cooking appliance is controlled to start pressure reduction at a first exhaust duty ratio until the current pressure in the cooker is equal to the first pressure value, wherein the initial pressure value corresponds to the first exhaust duty ratio one to one; at the moment, the pressure in the cooker is a first pressure value, the cooking utensil is controlled to start pressure reduction at a second exhaust duty ratio until the current pressure in the cooker is equal to a second pressure value, wherein the first pressure value corresponds to the second exhaust duty ratio one by one; and at the moment, the pressure in the cooker is a second pressure value, and the cooking utensil is controlled to start pressure reduction at a third exhaust duty ratio until the current pressure in the cooker is equal to the normal pressure, wherein the second pressure value corresponds to the third exhaust duty ratio one by one. And when the pressure in the cooker reaches the normal pressure, ending the pressure relief and entering a heat preservation stage.
Specifically, the step S4 of "obtaining the current exhaust duty ratio based on the preset correspondence relationship between the pressure in the cooker and the exhaust duty ratio and the current pressure in the cooker" may include the steps of:
s41, determining the current maximum exhaust duty ratio according to the corresponding relation between the pressure in the cooker and the exhaust duty ratio and the current pressure in the cooker;
according to the corresponding relation between the preset pressure in the cooker and the exhaust duty ratio and the detected current pressure in the cooker, the maximum exhaust duty ratio which can be adapted to the current pressure in the cooker can be obtained. When the cooking utensil exhausts with the maximum exhaust duty ratio, the cooking utensil can be ensured not to overflow.
S42, obtaining the current exhaust duty ratio based on the current maximum exhaust duty ratio.
Therefore, after the maximum exhaust duty ratio is obtained in the above steps, a suitable current exhaust duty ratio can be selected in a range less than or equal to the maximum exhaust duty ratio. For example, if the pressure relief time needs to be accelerated according to the user's demand, the current exhaust duty ratio may be selected as the maximum exhaust duty ratio. If the pressure relief time needs to be slowed down according to the requirements of the user, and the possibility of outward overflow of the cooking appliance is reduced, the user can select the current exhaust duty ratio to be a relatively moderate exhaust duty ratio.
Of course, the embodiment of the present invention is only an example of selecting the exhaust duty ratio, and is not limited thereto, and a person skilled in the art may change the selection manner of the exhaust duty ratio according to the actual situation, so as to achieve the same technical effect.
Preferably, in an embodiment of the present invention, after step S3, the method further includes:
s5, acquiring a plurality of pressure intervals; and determining the corresponding relation between each pressure interval and the exhaust duty ratio based on the corresponding relation between the pressure in the cooker and the exhaust duty ratio and a plurality of pressure intervals.
In the cooking appliance, a plurality of pressure sections are arranged in advance in the order of the pressure in the cooker from low to high. Then, according to the corresponding relation between the pressure in the cooker and the exhaust duty ratio, the corresponding relation between a plurality of pressure intervals and the exhaust duty ratio can be obtained.
For example, in an embodiment of the present invention, the plurality of pressure intervals may include a first pressure interval, a second pressure interval, and a third pressure interval.
Specifically, the first pressure interval is: p >70 kpa; the second pressure interval is: 70kpa ≧ P ≧ 30 kpa; the third pressure interval is: p <30kpa, wherein P is the pressure in the cooker relative to the pressure of normal pressure.
When the pressure in the cooker is in the first pressure interval, i.e., the pressure in the cooker P >70kpa, the range of the exhaust duty ratio corresponding to the first pressure interval is: 0< D ≦ 0.4;
when the pressure in the cooker is in the second pressure interval, i.e., 70kpa ≧ P ≧ 30kpa, the range of the exhaust duty ratio corresponding to the second pressure interval is:
when the pressure in the cooker is in the third pressure interval, namely the pressure in the cooker P is less than 30 kpa; the range of the exhaust duty ratio corresponding to the third pressure interval is:
wherein, P is the pressure in the cooker relative to the pressure of normal pressure; d is the exhaust duty cycle; t is the pressure relief time required for relieving the pressure from 110KPa to normal pressure by only adopting a quick pressure relief module without exhausting; v is the total volume of the cooked food material.
When t is 8min, the partial relationship between P and D is as follows:
so set up, when the pressure in the pot is higher, control discharge valve exhausts with lower exhaust duty cycle, when the pressure in the pot is lower, control discharge valve exhausts with higher exhaust duty cycle to can control cooking utensil and exhaust according to the different exhaust duty cycle of the interior pressure environment automatic selection of difference of pot, realize at the supplementary pressure release of quick pressure release in-process, thereby can prevent the problem that the food spills over easily among the exhaust process.
As an alternative embodiment of the present invention, when the pressure in the pot of the cooking appliance is characterized by the temperature in the pot, the relationship between the temperature in the pot and the pressure in the pot is P ═ 5T-500; wherein P is the pressure in the cooker, and T is the temperature in the cooker.
Correspondingly, when the pan temperature is in a first temperature interval, i.e. the pan temperature T ≧ 114 ℃, the range of the exhaust duty ratio D corresponding to the first pressure interval is: 0< D ≦ 0.4;
when the pan temperature is in a second temperature interval, i.e. the pan temperature is between 107 ℃ and 114 ℃, the range of the exhaust duty ratio D corresponding to the first pressure interval is:
when the temperature in the pan is in a third temperature interval, i.e. the temperature in the pan T <107 ℃, the range of the exhaust duty ratio corresponding to the first pressure interval is:
wherein T is the temperature in the pot; d is the exhaust duty cycle; t is the pressure relief time required for relieving the pressure from 110KPa to normal pressure by only adopting a quick pressure relief module without exhausting; v is the total volume of the cooked food material.
During the exhaust process of the cooking appliance, a plurality of temperature values may be preset, as shown in fig. 3, in the present embodiment, the first temperature value, the second temperature value and the boiling temperature may be set from large to small. The boiling temperature was 100 ℃ at standard atmospheric pressure.
When T is 8min, the partial relationship between T and D is as follows:
| T/℃ | D/s |
| 122 | ≦0.4 |
| 120 | ≦0.4 |
| 118 | ≦0.4 |
| 116 | ≦0.4 |
| 114 | ≦0.4667 |
| 112 | ≦0.8866 |
| 110 | ≦1.1505 |
| 108 | ≦1.2584 |
| 106 | ≦1.2103 |
| 104 | ≦5.2 |
| 102 | ≦23.4 |
specifically, when pressure relief is started, the cooking appliance detects that the temperature in the pot is an initial temperature value, when the initial temperature value is greater than normal pressure and is greater than a first temperature value, the cooking appliance is controlled to start pressure reduction at a first exhaust duty ratio until the current temperature in the pot is equal to the first temperature value, wherein the initial temperature value corresponds to the first exhaust duty ratio one to one; at the moment, the temperature in the pot is a first temperature value, the cooking utensil is controlled to start cooling at a second exhaust duty ratio until the current temperature in the pot is equal to a second temperature value, wherein the first temperature value corresponds to the second exhaust duty ratio one by one; and at the moment, the temperature in the pot is a second temperature value, and then the cooking utensil is controlled to start cooling at a third exhaust duty ratio until the current temperature in the pot is equal to the boiling temperature, wherein the second temperature value corresponds to the third exhaust duty ratio one to one. And when the temperature in the pot reaches the boiling temperature, the pressure relief is finished, and the heat preservation stage is started.
Example 2
The embodiment of the invention provides a pressure relief device of a cooking appliance, which comprises:
the first acquisition module is used for acquiring characteristic parameters for representing the pressure in the pot of the cooking appliance; for details, please refer to step S1 of the above embodiment, which is not described herein again.
The processing module is used for obtaining the current pressure in the cooker according to the characteristic parameters of the pressure in the cooker; for details, please refer to step S1 of the above embodiment, which is not described herein again.
The second acquisition module is used for acquiring the preset corresponding relation between the pressure in the cooker and the exhaust duty ratio; for details, please refer to step S1 of the above embodiment, which is not described herein again.
And the control module is used for obtaining the current exhaust duty ratio based on the preset corresponding relation between the pressure in the cooker and the exhaust duty ratio and the current pressure in the cooker and controlling the cooking appliance to exhaust according to the current exhaust duty ratio. For details, please refer to step S1 of the above embodiment, which is not described herein again.
Example 3
The embodiment of the invention also provides an electronic device, which may include a processor and a memory, wherein the processor and the memory may be connected by a bus or in other manners, taking bus connection as an example.
The processor may be a Central Processing Unit (CPU). The Processor may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, or a combination thereof.
The memory, as a non-transitory computer-readable storage medium, may be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as program instructions/modules (e.g., a first acquisition module, a second acquisition module, a processing module, and an adjustment module) corresponding to the pressure relief method in embodiments of the invention. The processor executes various functional applications and data processing of the processor by executing non-transitory software programs, instructions and modules stored in the memory, that is, the pressure relief method in the above method embodiment is realized.
The memory may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created by the processor, and the like. Further, the memory may include high speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory optionally includes memory located remotely from the processor, and such remote memory may be coupled to the processor via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The one or more modules are stored in the memory and, when executed by the processor, perform any of the pressure relief methods described above.
The specific details of the electronic device may be understood by referring to the corresponding related descriptions and effects in any of the above embodiments, and are not described herein again.
Example 4
The embodiment of the invention also provides a computer-readable storage medium, which stores computer instructions, and the computer instructions are used for causing the computer to execute any one of the pressure relief methods.
The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD), a Solid State Drive (SSD), or the like; the storage medium may also comprise a combination of memories of the kind described above.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (7)
1. A method of venting pressure in a cooking appliance, comprising:
acquiring characteristic parameters for representing the pressure in a pot of the cooking appliance;
obtaining the current pressure in the cooker according to the characteristic parameters of the pressure in the cooker;
acquiring a preset corresponding relation between the pressure in the cooker and the exhaust duty ratio;
obtaining a current exhaust duty ratio based on the preset corresponding relation between the pressure in the cooker and the exhaust duty ratio and the current pressure in the cooker, and controlling the cooking appliance to exhaust according to the current exhaust duty ratio;
after the preset corresponding relationship between the pressure in the cooker and the exhaust duty ratio is obtained, the method further comprises the following steps:
acquiring a plurality of pressure intervals;
determining the corresponding relation between each pressure interval and the exhaust duty ratio based on the corresponding relation between the pressure in the cooker and the exhaust duty ratio and a plurality of pressure intervals; obtaining the current exhaust duty ratio based on the preset corresponding relation between the pressure in the cooker and the exhaust duty ratio and the current pressure in the cooker comprises the following steps:
determining the current duty ratio based on the corresponding relation between each pressure interval and the exhaust duty ratio and the pressure interval to which the current pressure in the cooker belongs;
the plurality of pressure intervals comprise a first pressure interval, a second pressure interval and a third pressure interval;
the first pressure interval is: p >70 kpa; the range of the exhaust duty ratio corresponding to the first pressure interval is: 0< D ≦ 0.4;
the second pressure interval is: 70kpa ≧ P ≧ 30 kpa; the range of the exhaust duty ratio corresponding to the second pressure interval is:
the third pressure interval is: p <30 kpa; the range of the exhaust duty ratio corresponding to the third pressure interval is:
wherein, P is the pressure in the cooker relative to the pressure of normal pressure; d is the exhaust duty cycle; t is the pressure relief time required for relieving the pressure from 110KPa to normal pressure by only adopting a quick pressure relief module without exhausting; v is the total volume of the cooked food material.
2. The method of claim 1, wherein the obtaining a current exhaust duty cycle based on the preset correspondence relationship between the pressure in the cooker and the exhaust duty cycle and the current pressure in the cooker comprises:
determining the current maximum exhaust duty ratio according to the corresponding relation between the pressure in the cooker and the exhaust duty ratio and the current pressure in the cooker;
the current exhaust duty cycle is derived based on the current maximum exhaust duty cycle.
3. The method according to claim 1 or 2, wherein the characteristic parameter characterizing the pressure in the pan of the cooking appliance comprises any one of an electric current and a temperature in the pan.
4. The method of claim 3, wherein when the pressure in the pot of the cooking appliance is characterized by the temperature in the pot, the relationship between the temperature in the pot and the pressure in the pot is:
P＝5T-500；
wherein P is the pressure in the cooker, and T is the temperature in the cooker.
5. A pressure relief device of a cooking appliance, comprising:
the first acquisition module is used for acquiring characteristic parameters for representing the pressure in the pot of the cooking appliance;
the processing module is used for obtaining the current pressure in the cooker according to the characteristic parameters of the pressure in the cooker;
the second acquisition module is used for acquiring the preset corresponding relation between the pressure in the cooker and the exhaust duty ratio;
the control module is used for obtaining a current exhaust duty ratio based on the preset corresponding relation between the pressure in the cooker and the exhaust duty ratio and the current pressure in the cooker and controlling the cooking appliance to exhaust according to the current exhaust duty ratio;
after the preset corresponding relationship between the pressure in the cooker and the exhaust duty ratio is obtained, the method further comprises the following steps:
acquiring a plurality of pressure intervals;
determining the corresponding relation between each pressure interval and the exhaust duty ratio based on the corresponding relation between the pressure in the cooker and the exhaust duty ratio and a plurality of pressure intervals; obtaining the current exhaust duty ratio based on the preset corresponding relation between the pressure in the cooker and the exhaust duty ratio and the current pressure in the cooker comprises the following steps:
determining the current duty ratio based on the corresponding relation between each pressure interval and the exhaust duty ratio and the pressure interval to which the current pressure in the cooker belongs;
the plurality of pressure intervals comprise a first pressure interval, a second pressure interval and a third pressure interval;
the first pressure interval is: p >70 kpa; the range of the exhaust duty ratio corresponding to the first pressure interval is: 0< D ≦ 0.4;
the second pressure interval is: 70kpa ≧ P ≧ 30 kpa; the range of the exhaust duty ratio corresponding to the second pressure interval is:
the third pressure interval is: p <30 kpa; the range of the exhaust duty ratio corresponding to the third pressure interval is:
wherein, P is the pressure in the cooker relative to the pressure of normal pressure; d is the exhaust duty cycle; t is the pressure relief time required for relieving the pressure from 110KPa to normal pressure by only adopting a quick pressure relief module without exhausting; v is the total volume of the cooked food material.
6. An electronic device, comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory having stored therein computer instructions, the processor executing the computer instructions to perform the pressure relief method according to any one of claims 1 to 4.
7. A computer-readable storage medium having stored thereon computer instructions for causing a computer to perform the pressure relief method of any of claims 1-4.
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| CN202110975497.9A CN113455893B (en) | 2021-08-24 | 2021-08-24 | Pressure relief method and pressure relief device for cooking utensil |
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| CN202110975497.9A CN113455893B (en) | 2021-08-24 | 2021-08-24 | Pressure relief method and pressure relief device for cooking utensil |
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| CN115381278B (en) * | 2022-09-30 | 2023-04-14 | 珠海格力电器股份有限公司 | Pressure relief method and device for cooking appliance, cooking appliance and storage medium |
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| CN103799847A (en) * | 2012-11-06 | 2014-05-21 | 美的集团股份有限公司 | Electric pressure cooker and control method for electric pressure cooker |
| CN111195068A (en) * | 2019-10-30 | 2020-05-26 | 浙江苏泊尔家电制造有限公司 | Cooking appliance and cooking method |
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| JP3343228B2 (en) * | 1999-11-15 | 2002-11-11 | 象印マホービン株式会社 | Pressure cooker |
| CN106136937B (en) * | 2015-04-03 | 2019-03-08 | 佛山市顺德区美的电热电器制造有限公司 | Control method, control device and cooking apparatus |
| CN107296492A (en) * | 2016-04-15 | 2017-10-27 | 浙江苏泊尔家电制造有限公司 | Pressure cooking appliance and the method for heating and controlling for pressure cooking appliance |
| CN111513548A (en) * | 2020-04-29 | 2020-08-11 | 珠海格力电器股份有限公司 | Electric cooker air pump control method and device, electric cooker and storage medium |
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| CN103654373A (en) * | 2012-09-10 | 2014-03-26 | 美的集团股份有限公司 | Electric pressure cooker control method and electric pressure cooker |
| CN103799847A (en) * | 2012-11-06 | 2014-05-21 | 美的集团股份有限公司 | Electric pressure cooker and control method for electric pressure cooker |
| CN111195068A (en) * | 2019-10-30 | 2020-05-26 | 浙江苏泊尔家电制造有限公司 | Cooking appliance and cooking method |
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