CN112535414B - Cooking appliance, control device and heat preservation control method thereof, and computer readable storage medium - Google Patents

Cooking appliance, control device and heat preservation control method thereof, and computer readable storage medium Download PDF

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Publication number
CN112535414B
CN112535414B CN201910898016.1A CN201910898016A CN112535414B CN 112535414 B CN112535414 B CN 112535414B CN 201910898016 A CN201910898016 A CN 201910898016A CN 112535414 B CN112535414 B CN 112535414B
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heating
air exhaust
temperature
cooking
heating power
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CN112535414A (en
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刘化勇
罗飞龙
黄韦铭
严若飞
羊小亮
瞿月红
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Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
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Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
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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
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/32—Time-controlled igniting mechanisms or alarm devices
    • 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
    • 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
    • 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
    • A47J36/00—Parts, details or accessories of cooking-vessels

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Cookers (AREA)

Abstract

The invention discloses a cooking appliance, a control device and a heat preservation control method thereof, and a computer readable storage medium, wherein the heat preservation control method comprises the following steps: when the cooking appliance enters a heat preservation stage, controlling the heating device to reduce the heating power and controlling the air exhaust device to exhaust air from the cooking cavity; controlling the air exhaust device to stop exhausting air when the pressure in the cooking cavity reaches a preset pressure; controlling the heating device to increase the heating power, and controlling the air exhaust device to be started at the same time when the heating device increases the heating power, or controlling the air exhaust device to be started before the heating device increases the heating power; controlling the heating device to reduce the heating power, and controlling the air exhaust device to stop at the same time when the heating device reduces the heating power, or controlling the air exhaust device to stop after the heating device reduces the heating power. According to the heat preservation control method of the cooking utensil, the problem of pressure rise caused by temperature rise in the heating process in the heat preservation stage is solved, and the stability of the pressure in the cooking cavity is ensured.

Description

Cooking appliance, control device and heat preservation control method thereof, and computer readable storage medium
Technical Field
The invention relates to the technical field of household appliances, in particular to a cooking appliance, a control device and a heat preservation control method thereof and a computer readable storage medium.
Background
At present, the rice cooker with the vacuum heat preservation function is vacuumized when the rice is preserved heat, so that the eating effect of the rice is effectively guaranteed, and the heat preservation time of the rice is prolonged. In order to ensure the taste and quality of rice, the temperature of rice needs to be maintained at about 70 ℃ in the heat preservation stage, which needs to heat the rice discontinuously during heat preservation, but the decrease of the vacuum degree in the cooker caused by heating temperature rise affects the heat preservation effect and the heat preservation time.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention aims to provide a heat preservation control method for a cooking appliance, which has a good heat preservation effect and good user experience.
According to the present invention, a computer-readable storage medium is also provided, which can enable a cooking appliance to achieve a good heat preservation effect.
The invention also provides a control device of the cooking appliance, which can realize better heat preservation effect of the cooking appliance.
The invention further provides a cooking appliance which is low in cost and good in heat preservation effect.
According to the heat preservation control method of the cooking appliance, the heat preservation control method comprises the following steps: when the cooking appliance enters a heat preservation stage, controlling the heating device to reduce heating power, and controlling the air exhaust device to exhaust air from the cooking cavity; controlling the air exhaust device to stop exhausting air when the pressure in the cooking cavity reaches a preset pressure; controlling the heating device to increase the heating power, and controlling the air exhaust device to be started at the same time when the heating device increases the heating power, or controlling the air exhaust device to be started before the heating device increases the heating power; controlling the heating device to reduce the heating power, and controlling the air exhaust device to stop at the same time when the heating device reduces the heating power, or controlling the air exhaust device to stop after the heating device reduces the heating power.
According to the heat preservation control method of the cooking appliance, the air exhaust device is controlled to be started at the same time or before the heating device raises the heating power, so that the problem of pressure rise when the temperature in the cooking cavity rises is avoided; through controlling air exhaust device and reducing heating power or postponing stop work at heating device, further avoided the problem that the culinary art chamber intensifies and leads to pressure to rise, and can not have the delay phenomenon, guaranteed the stability of culinary art intracavity pressure, improved the heat preservation effect, it is long when having prolonged to keep warm, in addition, can save pressure measurement device, simplify the structure, reduce the part, reduce cost increases cooking utensil's market competition.
According to the heat preservation control method of the cooking appliance, the starting and stopping of the air extracting device are controlled according to the detected temperature in the cooking cavity or by monitoring the working state of the heating device.
According to the heat preservation control method of the cooking appliance, the step of controlling the starting and stopping of the air extracting device according to the detected temperature in the cooking cavity comprises the following steps: controlling the air exhaust device to be started at the same time when the heating device raises the heating power, or controlling the air exhaust device to be started before the heating device raises the heating power; and controlling the air exhaust device to stop at the same time when the heating device reduces the heating power, or controlling the air exhaust device to stop after the heating device reduces the heating power.
According to the heat preservation control method of the cooking appliance, the step of controlling the starting and stopping of the air extracting device according to the detected temperature in the cooking cavity comprises the following steps: detecting that the temperature in the cooking cavity is reduced to be lower than a first preset temperature, and controlling the air exhaust device to exhaust air; and when the temperature in the cooking cavity is detected to be reduced to be lower than a second preset temperature, the heating device is controlled to increase the heating power, and the first preset temperature is greater than or equal to the second preset temperature.
Optionally, after the heating device boosts the heating power and the air exhaust device operates, the method further comprises: and detecting that the temperature in the cooking cavity rises to a third preset temperature, and controlling the heating device to reduce the heating power, wherein the third preset temperature is higher than the first preset temperature.
Further, after the heating device raises the heating power and the air exhaust device works, the method further comprises the following steps: and controlling the air exhaust device to stop exhausting air when the temperature in the cooking cavity is detected to rise to a fourth preset temperature, wherein the fourth preset temperature is greater than or equal to the third preset temperature.
Optionally, the first preset temperature is 69-75 ℃; and/or, the second preset temperature is 59-65 ℃; and/or, the third preset temperature is 74-80 ℃.
According to the heat preservation control method of the cooking appliance, the step of controlling the starting and stopping of the air extracting device by monitoring the working state of the heating device comprises the following steps: when the heating device is monitored to increase the heating power, controlling the air exhaust device to work simultaneously; and when the heating device is monitored to reduce the heating power, the air exhaust device is controlled to stop working at the same time, or the air exhaust device is controlled to stop air exhaust after the heating device reduces the heating power and reaches a preset time.
Further, when the temperature in the cooking cavity is detected to be lower than a second preset temperature, the heating device is controlled to increase the heating power; and/or controlling the heating device to reduce the heating power when the temperature in the cooking cavity is detected to be increased to be higher than a third preset temperature.
According to the embodiment of the invention, the heat preservation control method of the cooking appliance further comprises the following steps: detecting a cooking mode of the cooking appliance; when the cooking mode is detected to be the cooking mode and the cooking appliance enters the heat preservation stage, the heating device is controlled to reduce the heating power, the air exhaust device is controlled to exhaust air from the cooking cavity, and the air exhaust is stopped when the pressure in the cooking cavity reaches the preset pressure.
According to the computer readable storage medium of the embodiment of the second aspect of the present invention, the computer readable storage medium stores thereon a computer program, the computer program when executed implements the control method of the cooking appliance according to the embodiment of the first aspect of the present invention, the computer readable storage medium can enable the cooking appliance adopting the computer readable storage medium to achieve a good heat preservation effect.
A control device of a cooking appliance according to an embodiment of a third aspect of the present invention includes: the detection module is used for detecting the temperature in the cooking cavity or monitoring the working state of the heating device; the control module is communicated with the detection module, controls the heating device to reduce heating power when the cooking appliance enters a heat preservation stage, controls the air exhaust device to stop exhausting air when the pressure in the cooking cavity reaches a preset pressure, controls the heating device to increase heating power, controls the air exhaust device to start while the heating device increases heating power, or controls the air exhaust device to start before the heating device increases heating power; the control module controls the heating device to reduce heating power, and controls the air exhaust device to stop while the heating device reduces heating power, or controls the air exhaust device to stop after the heating device reduces heating power.
According to the control device of the cooking utensil provided by the embodiment of the invention, the pressure of the cooking utensil can be kept stable in the heat preservation stage, the heat preservation effect is good, the heat preservation and fresh-keeping time is long, and the user experience is good.
According to the control device of the cooking appliance, the control module controls the air exhaust device to be started or stopped according to the temperature in the cooking cavity detected by the detection module or the working state of the heating device monitored by the detection module.
According to the control device of the cooking appliance, the detection module detects that the temperature in the cooking cavity is reduced to be lower than a first preset temperature, and the control module controls the air exhaust device to exhaust air; the detection module detects that the temperature in the cooking cavity is reduced to a second preset temperature, the control module controls the heating device to increase the heating power, and the first preset temperature is greater than or equal to the second preset temperature.
Further, the detection module detects that the temperature in the cooking cavity rises above a third preset temperature, and the control module controls the heating device to reduce the heating power.
Further, the detection module detects that the temperature in the cooking cavity rises to a fourth preset temperature, the control module controls the air exhaust device to stop exhausting air, and the fourth preset temperature is greater than or equal to the third preset temperature.
Specifically, the detection module detects that the heating device increases the heating power, and controls the air exhaust device to work; the detection module detects that the heating device reduces the heating power, and controls the air exhaust device to stop working at the same time, or controls the air exhaust device to stop air exhaust after the heating device reduces the heating power and reaches a preset time.
Further, the detection module detects that the temperature in the cooking cavity is reduced to be lower than a second preset temperature, and the control module controls the heating device to increase the heating power.
Further, the detection module is also used for detecting the cooking mode of the cooking utensil, when the detection module detects that the cooking mode is the cooking mode and the cooking utensil enters the heat preservation stage, the control module controls the heating device to reduce the heating power and controls the air exhaust device to stop exhausting air when the pressure in the cooking cavity reaches the preset pressure.
According to the cooking appliance of the fourth aspect of the invention, the control device of the cooking appliance of the third aspect of the invention is adopted, and by adopting the control device, the pressure in the cooking cavity is stable in the heat preservation stage of the cooking appliance, the heat preservation effect is good, the heat preservation and fresh-keeping time is long, in addition, the structure of the cooking appliance is simplified, the parts are reduced, the cost is reduced, the market competitiveness of the product is increased, and the user experience is good.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of a heat-preservation control method of a cooking appliance according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a cooking appliance according to an embodiment of the present invention;
fig. 3 is a flowchart of a heat-preservation control method of a cooking appliance according to another embodiment of the present invention;
fig. 4 is a temperature-time relationship diagram of a cooking appliance in an insulation stage according to another embodiment of the present invention;
fig. 5 is a flowchart of a temperature keeping control method of a cooking appliance according to still another embodiment of the present invention;
fig. 6 is a flowchart of a control method of a cooking appliance according to an embodiment of the present invention;
fig. 7 is a flowchart of a control method of a cooking appliance according to another embodiment of the present invention.
Reference numerals:
the cooking appliance 100 is provided with a cooking unit,
a pot body 10, an inner pot 11, a cooking cavity 12,
a pot cover 20, an air exhaust hole 21, a pressure relief hole 22, an electromagnetic valve 23,
the air extractor 30, the pressure relief device 40, the temperature detector 50, the heat dissipation fan 60 and the heating device 70.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A heat preservation control method of a cooking appliance according to an embodiment of the present invention is described below with reference to fig. 1 to 7.
As shown in fig. 1 to 7, a method for controlling insulation of a cooking appliance according to an embodiment of the present invention includes the steps of:
s1, when the cooking utensil enters a heat preservation stage, controlling the heating device to reduce the heating power, and controlling the air exhaust device to exhaust the air from the cooking cavity so as to reduce the pressure in the cooking cavity and enable the cooking cavity to be in a negative pressure state so as to be convenient for heat preservation and fresh keeping, wherein the heating power reduction can be to enable the heating device to work in a low-power state, or can be to reduce the power so as to enable the heating power to be zero, namely the heating device directly stops working;
s2, controlling the air exhaust device to stop exhausting air when the pressure in the cooking cavity reaches a preset pressure P0, and ensuring the quality and taste of food in the cooking cavity when the preset pressure P0 is reached;
s3, controlling the heating device to increase the heating power, and controlling the air exhaust device to start while the heating device increases the heating power, or controlling the air exhaust device to start before the heating device increases the heating power;
and S4, controlling the heating device to reduce the heating power, and controlling the air exhaust device to stop at the same time when the heating device reduces the heating power, or controlling the air exhaust device to stop after the heating device reduces the heating power.
That is, after the preset pressure is reached in the cooking cavity and the air exhaust is stopped, four different conditions can be included: firstly, the heating device is controlled to increase the heating power, the air exhaust device is controlled to start at the same time, the heating device is controlled to reduce the heating power, and the air exhaust device is controlled to stop at the same time; secondly, the air exhaust device is controlled to be started in advance, the heating device is controlled to increase the heating power, the heating device is controlled to reduce the heating power, and the air exhaust device is controlled to stop at the same time; thirdly, controlling the heating device to increase the heating power, controlling the air exhaust device to start simultaneously, controlling the heating device to reduce the heating power, and controlling the air exhaust device to stop after delay; fourthly, the air exhaust device is controlled to be started in advance, the heating device is controlled to increase the heating power, the heating device is controlled to reduce the heating power, and the air exhaust device is controlled to be stopped after being delayed.
That is to say, heating device's promotion heating power's time is less than or equal to air exhaust device's air exhaust time, from this, thoroughly eliminates the problem that the pressure rose in the culinary art intracavity that leads to because of heating up for the pressure in the in-process culinary art intracavity that heats up can not produce great change, has improved the fresh-keeping effect that keeps warm, has prolonged the heat preservation time.
According to the heat preservation control method of the cooking appliance, the air exhaust device is controlled to be started at the same time or before the heating device raises the heating power, so that the problem of pressure rise when the temperature in the cooking cavity rises is avoided; through controlling air exhaust device and reducing heating power or postponing stop work at heating device, further avoided the problem that the culinary art chamber intensifies and leads to pressure to rise, and can not have the delay phenomenon, guaranteed the stability of culinary art intracavity pressure, improved the heat preservation effect, it is long when having prolonged to keep warm, in addition, can save pressure measurement device, simplify the structure, reduce the part, reduce cost increases cooking utensil's market competition.
According to an embodiment of the present invention, the manner of controlling the start and stop of the air extractor may be to detect the temperature in the cooking cavity, or to control the start and stop of the air extractor by monitoring the operating state of the heating device.
The working state here may be a change of power of the heating device, and when the heating device increases the heating power, the heating power may be increased from zero to a certain value, that is, the heating device is started, and the heating power may also be increased from one value to another value; when the heating device is powered down, the heating power may be reduced from zero, i.e. the heating device is deactivated, and the heating power may also be reduced from one value to another.
For example, when the temperature in the cooking cavity is detected to be reduced, the air exhaust device is controlled to be opened, air is supplemented and exhausted in time, the fact that the cooking cavity is always under stable pressure is guaranteed, and the heat preservation effect is improved.
Or, after the working state of the heating device is monitored, the air exhaust device is controlled to be turned on or off, for example, when the heating device is monitored to increase the heating power (the heating power can be increased by starting the heating device for heating), the air exhaust device is controlled to be turned on, and when the heating device is monitored to decrease the heating power (the heating power can be increased by turning off the heating device), the air exhaust device is controlled to be turned off, so that when the temperature is increased, the air pressure in the cooking cavity cannot be increased, and the air pressure can be kept in a stable state, thereby ensuring the quality and taste of food; and the air exhaust device is controlled to be closed after delay, so that the problem of pressure rise caused by heating can be solved in time, the stability of the pressure in the cooking cavity is further ensured, the heat preservation effect is improved, and the prolonged heat preservation time is long.
Therefore, the air exhaust device is controlled to work after the preset pressure is reached in the cooking cavity, the problem of pressure rise caused by temperature rise in the heating process in the heat preservation stage is solved, and the stability of the pressure in the cooking cavity is guaranteed.
In the related art, the pressure in the cooking cavity is usually detected by a pressure sensor to control the air extractor to supplement vacuum when the pressure rises, however, this method has many parts and high cost, and the time is required for the pressure to rise to a certain value and the time is required for supplementing vacuum to a set value, and in these time periods, the vacuum degree in the cooking cavity is not in the range of the set value, that is, the maintenance of the vacuum degree has a long time delay, which results in poor vacuum heat preservation effect and long heat preservation time.
According to the heat preservation control method provided by the embodiment of the invention, when the temperature in the cooking cavity is detected to be reduced, the air exhaust device is controlled to be opened, so that air can be supplemented and exhausted timely, and compared with the method for detecting the pressure in the cooking cavity to control the opening of the air exhaust device, the time of the process of waiting for the pressure in the cooking cavity to rise to a preset value and the time of the process of waiting for the gas to be supplemented and exhausted to recover to a proper pressure value are not needed, so that the condition that the pressure in the cooking cavity is always kept under a relatively stable pressure is ensured, and the heat preservation effect is improved.
That is to say, through the start-stop of detecting the temperature control air exhaust device in the culinary art intracavity, compare in the start-stop through detecting pressure control air exhaust device, neither can have the delay time of pressure detection time measuring, pressure decline, also can not have the latency of pressure recovery process to thorough solution the problem that the heat preservation effect is poor, the heat preservation time is short, improved user's use and experienced.
According to an embodiment of the present invention, controlling the air exhausting device to stop exhausting when the pressure in the cooking cavity reaches the preset pressure P0 comprises: under the condition that the volume in the culinary art intracavity and air exhaust device's the ability of bleeding certainly, through the air exhaust time of control air exhaust device to the culinary art chamber to can make the pressure in the culinary art intracavity reach and predetermine pressure P0, control is simple, convenient operation, and need not additionally to set up pressure measurement or pressure sensor from this, has simplified the structure, and the cooking utensil's of being convenient for equipment has reduced the part, and the cost is reduced has improved the market competition of product.
As shown in fig. 3, according to an embodiment of the present invention, controlling the start and stop of the air extractor according to the detected temperature in the cooking cavity comprises: detecting that the temperature in the cooking cavity is reduced to be lower than a first preset temperature T1, controlling the air extractor to work so as to extract air or supplement air in the cooking cavity and avoid the pressure in the cooking cavity from rising or changing greatly; when the temperature in the cooking cavity is detected to be reduced below the second preset temperature T2 (the second preset temperature T2 is less than the first preset temperature T1), the heating device is controlled to increase the heating power so as to increase the temperature in the cooking cavity and avoid the influence of too low temperature on the taste of food.
Through the work of detecting the temperature control air exhaust device in the culinary art intracavity for cooking utensil can be timely bleed, for through the work of detection pressure control air exhaust device, avoided the pressure drop in culinary art chamber and lead to the taste and the condition that the quality reduces of food, it is timely to mend to bleed, has guaranteed that the culinary art intracavity is in all the time under more stable pressure, improves the heat preservation effect, and the extension is long when keeping warm.
Wherein the first preset temperature T1 may be 69 ℃ to 75 ℃, preferably, the first preset temperature T1 is 72 ℃; the first preset temperature T1 is greater than the second preset temperature T2, and the difference between the first preset temperature T1 and the second preset temperature T2 is about 10 ℃, for example, the second preset temperature T2 may be 59 ℃ to 65 ℃, and preferably, the second preset temperature T2 is 62 ℃.
According to one embodiment of the invention, controlling the pumping device to start and stop according to the detected temperature in the cooking cavity comprises: the temperature in the cooking cavity is detected to be reduced to be lower than a first preset temperature T1 or a second preset temperature T2 (the second preset temperature T2 is equal to the first preset temperature T1), the air exhaust device is controlled to work so as to exhaust air or supplement air in the cooking cavity, and meanwhile, the heating device is controlled to improve heating power, so that the pressure in the cooking cavity can be prevented from being increased or greatly changed, the temperature in the cooking cavity can be increased, and the phenomenon that the temperature is too low to influence the taste of food is avoided.
In a further example, after the heating device boosts the heating power and the air exhaust device works, the method further comprises the following steps: the temperature in the cooking cavity is detected to be increased to above a third preset temperature T3, the heating device is controlled to reduce the heating power, it can be understood that the control temperature for increasing the power of the heating device is a second preset temperature T2, the control temperature for reducing the power of the heating device is a third preset temperature T3, the third preset temperature T3 is greater than the first preset temperature T1, the first preset temperature T1 is greater than the second preset temperature T2, through the temperature control, the air exhaust device is started firstly, the working state of the heating device is controlled again, and the air exhaust device is controlled to stop after the heating device reduces the heating power, so that the phenomenon that the pressure in the cooking cavity is increased due to the temperature increase in the cooking cavity is thoroughly eliminated, the phenomenon that the pressure in the cooking cavity is delayed does not exist, the stability is good, and the heat preservation effect is further improved.
The third preset temperature T3 is greater than the first preset temperature T1, and the difference between the third preset temperature T3 and the first preset temperature T1 is about 5 ℃, for example, the third preset temperature may be 74 ℃ to 80 ℃, and preferably, the third preset temperature is 75 ℃.
In some optional examples, detecting that the temperature in the cooking cavity rises above the third preset temperature T3, and controlling the heating device to reduce the heating power further includes: the method comprises the steps of detecting that the temperature in the cooking cavity rises to a fourth preset temperature T4, controlling the air exhaust device to stop exhausting air, wherein the fourth preset temperature T4 is greater than the third preset temperature T3, namely after the heating device reduces the heating power, controlling the air exhaust device to stop working when the temperature in the cooking cavity rises to the fourth preset temperature T4, and increasing the working time of the air exhaust device to avoid the pressure in the cooking cavity from rising when the temperature rises, so that the pressure in the cooking cavity is maintained at a preset pressure P0 value, and the quality and the taste of food in the cooking cavity are guaranteed.
In some optional examples, the fourth preset temperature T4 is equal to the third preset temperature T3, that is, when the temperature in the cooking cavity is detected to rise above the third preset temperature T3, the heating device is controlled to reduce the heating power, and the air exhaust device is controlled to stop working, so as to stabilize the pressure in the cooking cavity, so that compared with the situation that the power of the heating device is reduced after the air exhaust device is stopped, the problem that the pressure in the cooking cavity rises due to temperature rise after the air exhaust device is stopped is avoided, and the pressure in the cooking cavity is ensured to be stabilized at the preset pressure P0.
Further, above-mentioned temperature detect process lasts and goes on in the heat preservation stage to at every turn when the temperature reduces to first preset temperature T1, all control air exhaust device and bleed, at every turn when the temperature reduces to second preset temperature T2, all control heating device and promote heating power, above-mentioned process is repeated and is carried out to the heat preservation stage and ends, and when heating device lift power or behind the lift power for the first time, air exhaust device will work once at least, in order to bleed at least once to the culinary art chamber.
According to one embodiment of the invention, the step of controlling the starting and stopping of the air extracting device by monitoring the working state of the heating device comprises the following steps: when the cooking appliance enters a heat preservation stage, controlling the heating device to reduce the heating power and controlling the air exhaust device to exhaust air from the cooking cavity; controlling the air exhaust device to stop exhausting air when the pressure in the cooking cavity reaches a preset pressure; when the heating power of the heating device is monitored to be increased, the air exhaust device is controlled to work simultaneously; when the heating device is monitored to reduce the heating power, the air exhaust device is controlled to stop working, namely, in the heat preservation stage, the power of the heating device is firstly reduced, and then the start and stop of the air exhaust device are controlled according to the change of the power of the heating device, so that the control is convenient, and the reliability is high.
According to one embodiment of the invention, monitoring the heating device for reducing the heating power and controlling the gas exhaust device to stop working comprises: the control air exhaust device stops extracting air when the heating device reduces the heating power, or the control air exhaust device stops extracting air when the heating device reduces the heating power and reaches the preset time, so that the time for improving the heating power of the heating device is less than the air exhaust time of the air exhaust device, the problem that the pressure in a cooking cavity rises due to heating is avoided, the pressure in the cooking cavity cannot change greatly in the heating and warming process, the heat preservation and fresh-keeping effect is improved, and the heat preservation time is prolonged.
As shown in fig. 5, according to another specific embodiment of the present invention, the controlling the start-stop of the air extractor by monitoring the operating state of the heating device comprises: detect the temperature in the culinary art intracavity and fall to below first preset temperature or the second preset temperature, control heating device promotes heating power, and then control air exhaust device simultaneous working, through the start-up synchro control air exhaust device's of heating device start-up promptly to guarantee when the temperature risees, the atmospheric pressure in the culinary art intracavity can not rise thereupon, can also keep in stable state, guarantees the quality and the taste of food.
In some optional examples, the second preset temperature is equal to the first preset temperature, and the temperature ranges from 69 ℃ to 75 ℃, so that the temperature in the cooking cavity is heated and pumped when being lower than the first preset temperature, a negative pressure state is maintained in the cooking cavity, and the moisture mouthfeel of the food is ensured on the basis of ensuring the temperature of the food.
In some preferred examples, the first preset temperature is equal to the second preset temperature, the temperature ranges from 59 ℃ to 65 ℃, and the food is heated in time when the temperature in the cooking cavity is lower than the preset temperature, so that the food temperature in the cooking cavity is prevented from being too low, and the eating effect and the eating experience are prevented from being influenced.
In some examples, detecting the temperature in the culinary art intracavity and rising to above the third preset temperature, control heating device reduces heating power, and air exhaust device stops bleeding simultaneously to avoid the too high edible effect of influence of culinary art intracavity food temperature and edible experience, through air exhaust device bleed in step with heating device's work, can in time solve the condition that the pressure that the heat preservation stage leads to because of the heating risees, guaranteed the stability of the pressure in the culinary art intracavity.
In some specific embodiments, when the cooking appliance enters the heat preservation stage, the heating device is controlled to stop heating, and the air exhaust device is controlled to exhaust air to the cooking cavity; controlling the air exhaust device to stop exhausting air when the pressure in the cooking cavity reaches a preset pressure; when the heating device is monitored to be started to work, the air exhaust device is controlled to work simultaneously; when the heating device stops heating, the air exhaust device is controlled to stop working, namely, in the heat preservation stage, the power of the heating device is firstly reduced to zero, and then the air exhaust device is controlled to start and stop according to the start and stop of the heating device, so that the control is convenient, and the reliability is high.
As shown in fig. 5, in a specific example, the insulation control method of the cooking appliance includes the steps of: when the cooking appliance enters a heat preservation stage, controlling the heating device to reduce the power to zero, namely stopping heating, and controlling the air exhaust device to exhaust air from the cooking cavity so as to reduce the pressure in the cooking cavity; when the pressure in the cooking cavity reaches a preset pressure P0, controlling the air exhaust device to stop exhausting air; the temperature in the cooking cavity is continuously reduced along with the prolonging of the heat preservation time, and when the temperature in the cooking cavity is detected to be lower than a second preset temperature T2, the heating device and the air exhaust device are controlled to work simultaneously, and the temperature in the cooking cavity is increased; the temperature that detects the culinary art intracavity rises to more than third preset temperature T3, and control heating device stops the heating, and control air exhaust device stops bleeding simultaneously, and the work through air exhaust device is synchronous with heating device's work, can in time solve the condition that the pressure that the heat preservation stage leads to because of the heating risees, has guaranteed the stability of the pressure in the culinary art intracavity.
Wherein the second preset temperature T2 may be 59-65 ℃, the third preset temperature T3 may be 74-80 ℃, preferably, the second preset temperature T2 is 70 ℃, and the third preset temperature T3 is 80 ℃.
According to the heat preservation control method provided by the embodiment of the invention, the starting and stopping of the air extracting device are controlled by detecting whether the heating device works or not, so that the problem of pressure rise in the cooking cavity caused by heating of the heating device in the heat preservation stage can be thoroughly or timely solved, and the problems of poor heat preservation effect and short heat preservation time caused by pressure change or pressure delay maintenance in the heat preservation stage in the prior art are solved.
Of course, the heat preservation control method can also comprise the following steps: when the temperature in the cooking cavity is detected to be increased to be higher than a third preset temperature T3, after the heating device is controlled to reduce heating power, the temperature in the cooking cavity is detected to be increased to be higher than a fourth preset temperature T4, the air exhaust device is controlled to stop air exhaust, wherein the fourth preset temperature T4 is larger than the third preset temperature T3, the working time of the air exhaust device is increased, the situation that the pressure in the cooking cavity is increased when the temperature is increased is further avoided, the pressure in the cooking cavity is guaranteed to be maintained at a preset pressure P0 value, and the quality and the taste of food in the cooking cavity are guaranteed.
Further, above-mentioned temperature detect process lasts in the heat preservation stage to when the temperature reduces to second preset temperature T2 at every turn, all control heating device promotion heating power, and control air exhaust device work, above-mentioned process is repeated and is gone on to the heat preservation stage and ends, and when heating device promotion power for the first time, air exhaust device will work once at least, with the culinary art chamber air exhaust once at least.
According to an embodiment of the present invention, the insulation control method of the cooking appliance further includes detecting a cooking mode of the cooking appliance; wherein, when detecting that the culinary art mode is the mode of cooking and when cooking utensil entering heat preservation stage, control heating device reduces heating power, heating device low-power work or stop heating promptly to control air exhaust device and bleed to the culinary art chamber, stop bleeding when the pressure in the culinary art intracavity reaches preset pressure P0.
Detecting the culinary art mode and being the non-mode of cooking, control heating device reduces heating power, heating device low-power work or stop heating promptly, and air exhaust device does not work in whole heat preservation stage simultaneously to avoid carrying out the evacuation at the heat preservation in-process of the mode such as congee or hot water, prevent the gas of air exhaust device suction high temperature steam or many greases, and cause the damage to air exhaust device, lead to the unable continuation of cooking utensil to use, influence user's use and experience.
According to the heat preservation control method provided by the embodiment of the invention, the detection of the cooking mode is added in the heat preservation stage, so that the air exhaust device can be started only in the cooking mode, the negative pressure heat preservation of foods such as cooked rice can be realized, and the air exhaust device can be prevented from being started in other modes, the damage to the air exhaust device is avoided, the service life of products is shortened, and the like.
According to one embodiment of the invention, the detection of the cooking mode is judged by memorizing the cooking mode selected by the user, and the detection of the cooking mode can also be realized by the self-carrying negative pressure heat preservation or non-carrying negative pressure heat preservation function of different cooking modes, so as to ensure that the air exhaust device is not started in the heat preservation stage under the condition of water and/or oil, thereby avoiding the damage of the air exhaust device, prolonging the service life of the product and ensuring good user experience.
As shown in fig. 6, a method of controlling a cooking appliance according to an embodiment of the present invention includes the steps of:
after a user selects a cooking mode, the product works according to the selected mode, after the work is finished, a heat preservation stage is carried out, the cooking mode of the cooking appliance is detected, whether the cooking mode is judged, when the cooking mode is detected to be the cooking mode, the heating device is controlled to reduce the heating power, the air exhaust device is controlled to exhaust the cooking cavity, the air exhaust is stopped when the pressure in the cooking cavity reaches a preset pressure P0, the vacuum heat preservation is realized, the temperature in the cooking cavity can be detected, the starting and stopping of the air exhaust device are controlled through the detected temperature in the cooking cavity, or the working state of the heating device is detected to control the starting and stopping of the air exhaust device, and the fresh-keeping effect and the heat preservation duration are improved; when the cooking mode is detected to be a non-cooking mode, the heating device is controlled to reduce the heating power, and meanwhile, the air exhaust device does not work all the time, so that the common heat preservation is realized.
As shown in fig. 7, a method of controlling a cooking appliance according to another embodiment of the present invention includes the steps of:
after the user selects the mode of cooking, the product works according to the mode of cooking, enters the heat preservation stage after the work is finished, controls heating device to reduce heating power, and controls air exhaust device to bleed the culinary art chamber, stops bleeding when the pressure in the culinary art intracavity reaches preset pressure P0, realizes vacuum insulation, can also detect the temperature in the culinary art intracavity afterwards, and opens and stop according to the temperature in the culinary art intracavity that detects or monitoring heating device's operating condition control air exhaust device.
After the user selects the non-cooking mode, the product works according to the selected mode, and enters a heat preservation stage after the work is finished, the heating device is controlled to reduce the heating power, and the air exhaust device does not work, so that the common heat preservation is realized.
According to an embodiment of the present invention, the time for the heating device to reduce the heating power may be 10s, or may be 1min or longer, so as to implement the intermittent heating, or the heating is not performed any more, and is not limited herein.
According to the computer-readable storage medium of the embodiment of the present invention, a computer program is stored on the computer-readable storage medium, and when the computer program is executed, the control method of the cooking appliance according to the embodiment of the present invention is realized, and the computer-readable storage medium can realize a good heat preservation effect of the cooking appliance adopting the computer-readable storage medium.
The control device of the cooking appliance according to the embodiment of the invention comprises: the cooking appliance comprises a detection module and a control module, wherein the detection module is used for detecting the temperature in a cooking cavity or monitoring the working state of a heating device, the control module is communicated with the detection module, when the cooking appliance enters a heat preservation stage, the control module can control the heating device to reduce heating power and control an air exhaust device to stop exhausting air when the pressure in the cooking cavity reaches a preset pressure, the control module controls the heating device to increase the heating power and controls the air exhaust device to be started while the heating device increases the heating power, or controls the air exhaust device to be started before the heating device increases the heating power; the control module controls the heating device to reduce the heating power, and controls the air exhaust device to stop while the heating device reduces the heating power, or controls the air exhaust device to stop after the heating device reduces the heating power.
That is to say, in the heat preservation stage of the cooking appliance, after the preset pressure is reached in the cooking cavity and the air exhaust is stopped, the control device can control the heating device to increase the heating power, control the air exhaust device to start simultaneously, control the heating device to reduce the heating power, and control the air exhaust device to stop simultaneously.
Or the control device controls the air exhaust device to be started in advance, controls the heating device to increase the heating power, controls the heating device to reduce the heating power, and controls the air exhaust device to stop at the same time.
Or the control device controls the heating device to increase the heating power, controls the air exhaust device to start simultaneously, controls the heating device to reduce the heating power, and controls the air exhaust device to stop after delay.
Or the control device controls the air exhaust device to be started in advance, controls the heating device to increase the heating power, controls the heating device to reduce the heating power, and controls the air exhaust device to be stopped after being delayed.
The time that the control device needs to control the heating device to promote the heating power is less than or equal to the air exhaust time of the air exhaust device, so that the problem that the pressure in the cooking cavity rises due to heating temperature rise is thoroughly solved, the pressure in the cooking cavity cannot change greatly in the heating temperature rise process, the heat preservation and preservation effects are improved, and the heat preservation time is prolonged.
According to the control device of the cooking utensil provided by the embodiment of the invention, the problem of pressure rise when the temperature in the cooking cavity rises is avoided, the pressure of the cooking utensil can be kept stable in the heat preservation stage, the heat preservation effect is good, the heat preservation and fresh-keeping time is long, and the user experience is good.
According to an embodiment of the invention, the control module may control the start and stop of the air extractor according to the temperature in the cooking cavity detected by the detection module, or the control module may control the start and stop of the air extractor by monitoring the operating state of the heating device through the detection module.
According to one embodiment of the invention, when the cooking appliance enters a heat preservation stage, firstly, the control module controls the heating device to reduce heating power and controls the air exhaust device to stop exhausting air when the pressure in the cooking cavity reaches a preset pressure; secondly, the control module controls the heating device to increase the heating power and controls the air exhaust device to start simultaneously; and finally, the control module controls the heating device to reduce the heating power and controls the air exhaust device to stop at the same time or controls the air exhaust device to stop after delay.
According to another embodiment of the invention, when the cooking appliance enters the heat preservation stage, firstly, the control module controls the heating device to reduce the heating power and controls the air exhaust device to stop exhausting air when the pressure in the cooking cavity reaches the preset pressure; secondly, the control module controls the starting of the air extracting device and then controls the heating device to improve the heating power; and finally, the control module controls the heating device to reduce the heating power and controls the air exhaust device to stop at the same time or controls the air exhaust device to stop after delay.
According to one embodiment of the invention, the control module controls the air exhaust device to start and stop according to the temperature in the cooking cavity detected by the detection module, and when the detection module detects that the temperature in the cooking cavity is reduced below a first preset temperature, the control module controls the air exhaust device to exhaust air; the detection module detects that the temperature in the cooking cavity is reduced to be lower than a second preset temperature, and the control module controls the heating device to increase the heating power.
In some examples, the first preset temperature is greater than the second preset temperature, the first preset temperature T1 may be 69 ℃ -75 ℃, preferably, the first preset temperature T1 is 72 ℃; the first preset temperature T1 is greater than the second preset temperature T2, and the difference between the first preset temperature T1 and the second preset temperature T2 is about 10 ℃, for example, the second preset temperature T2 may be 59 ℃ to 65 ℃, and preferably, the second preset temperature T2 is 62 ℃.
According to an embodiment of the invention, the detection module detects that the temperature in the cooking cavity is reduced to a second preset temperature or below the first preset temperature, the control module controls the heating device to increase the heating power, and the control module controls the air exhaust device to exhaust air. The first preset temperature is equal to the second preset temperature, the range of the preset temperature is 69-75 ℃, and therefore heating and air exhaust are carried out when the temperature in the cooking cavity is lower than the first preset temperature, the negative pressure state in the cooking cavity is guaranteed, and the moisture and taste of food are guaranteed on the basis of guaranteeing the temperature of the food; or the preset temperature is within the range of 59-65 ℃, and the food is heated in time when the temperature in the cooking cavity is lower than the preset temperature, so that the food temperature in the cooking cavity is prevented from being too low to influence the eating effect and the eating experience.
In some examples, the detection module detects that the temperature in the cooking cavity rises above a third preset temperature, the control module controls the heating device to reduce the heating power, the third preset temperature is higher than the first preset temperature, it is understood that the temperature for controlling the power of the heating device to be increased is the second preset temperature T2, the temperature for controlling the power of the heating device to be decreased is the third preset temperature T3, the third preset temperature T3 is greater than the first preset temperature T1, the first preset temperature T1 is greater than the second preset temperature T2, by controlling the temperature, firstly the air extracting device is started, then the working state of the heating device is controlled, the air exhaust device is controlled to stop after the heating power of the heating device is reduced, thereby thoroughly eliminating the phenomenon of pressure rise in the cooking cavity caused by heating of the heating device, and the phenomenon of pressure delay does not exist in the cooking cavity, the stability is good, and the heat preservation effect is further improved.
The third preset temperature T3 is greater than the first preset temperature T1, and the difference between the third preset temperature T3 and the first preset temperature T1 is about 5 ℃, for example, the third preset temperature may be 74 ℃ to 80 ℃, and preferably, the third preset temperature is 75 ℃.
In some examples, the detection module detects that the temperature in the cooking cavity rises above a fourth preset temperature, and the control module controls the air exhaust device to stop exhausting air, wherein the fourth preset temperature T4 is greater than the third preset temperature T3, that is, after the heating device reduces the heating power, when the temperature in the cooking cavity rises to the fourth preset temperature T4, the control module controls the air exhaust device to stop working, and by increasing the working time of the air exhaust device, the pressure in the cooking cavity is prevented from rising when the temperature rises, thereby ensuring that the pressure in the cooking cavity is maintained at the preset pressure P0 value, so as to ensure the quality and taste of food in the cooking cavity.
In some optional examples, the fourth preset temperature T4 is equal to the third preset temperature T3, that is, when the detection module detects that the temperature in the cooking cavity rises above the third preset temperature T3, the control module controls the heating device to reduce the heating power, and at the same time controls the air exhaust device to stop working, so as to stabilize the pressure in the cooking cavity, compared with stopping the heating device after stopping the air exhaust device first, the problem of the pressure in the cooking cavity rising due to temperature rise after stopping the air exhaust device is avoided, and the pressure in the cooking cavity is ensured to be stabilized at the preset pressure P0.
According to one embodiment of the invention, the control module controls the starting and stopping of the air extracting device according to the working state of the heating device monitored by the detection module, and when the detection module detects that the heating device increases the heating power, the control module controls the air extracting device to work; the detection module detects that the heating device reduces the heating power, and the control module controls the air exhaust device to stop working, namely, in the heat preservation stage, the power of the heating device is firstly reduced, and the control module controls the starting and stopping of the air exhaust device according to the change of the power of the heating device, so that the control is convenient, and the reliability is high.
According to an embodiment of the invention, the control module can control the air exhaust device to stop exhausting air while the heating device reduces the heating power, or the control module can also control the air exhaust device to stop exhausting air after the heating device reduces the heating power and reaches a preset time, so that the time for increasing the heating power of the heating device is ensured to be shorter than the air exhaust time of the air exhaust device, the problem of pressure rise in the cooking cavity caused by heating temperature rise is avoided, the pressure in the cooking cavity cannot generate great change in the heating temperature rise process, the heat preservation and fresh-keeping effects are improved, and the heat preservation time is prolonged.
According to another specific embodiment of the present invention, when the detection module detects that the temperature in the cooking cavity is reduced below the first preset temperature or the second preset temperature, the control module controls the heating device to increase the heating power, and further controls the air exhaust device to work simultaneously, that is, the start of the air exhaust device is controlled synchronously by the start of the heating device, so as to ensure that the air pressure in the cooking cavity does not increase when the temperature increases, and the air pressure can be kept in a stable state, thereby ensuring the quality and taste of the food.
According to an embodiment of the invention, the detection module is further used for detecting a cooking mode of the cooking appliance, and when the detection module detects that the cooking mode is a cooking mode and the cooking appliance enters a heat preservation stage, the control module controls the heating device to reduce heating power and controls the air exhaust device to stop air exhaust when the pressure in the cooking cavity reaches a preset pressure.
Detect the culinary art mode at detection module and be the non-mode of cooking, control module control heating device reduces heating power, and air exhaust device does not work in whole heat preservation stage simultaneously to avoid carrying out the evacuation at the heat preservation in-process of the mode such as congee or hot water, prevent the gas of air exhaust device suction high-temperature steam or many greases, and lead to the fact the damage to air exhaust device, lead to the unable continuation of cooking utensil to use, influence user's use and experience.
According to the cooking appliance provided by the embodiment of the invention, by adopting the control device of the cooking appliance provided by the embodiment of the invention, the pressure in the cooking cavity is stable in the heat preservation stage of the cooking appliance, the heat preservation effect is good, the heat preservation and fresh-keeping time is long, in addition, the structure of the cooking appliance is simplified, the parts are reduced, the cost is reduced, the market competitiveness of the product is increased, and the user experience is good.
A specific embodiment of a cooking appliance according to the present invention is described below with reference to fig. 2 to 4.
The cooking appliance 100 includes: the pot comprises a pot body 10, a pot cover 20, an air extracting device 30, a pressure relief device 40, a temperature detection device 50, a control device, a cooling fan 60 and a heating device 70.
The cooker body 10 comprises an inner cooker 11, the inner cooker 11 defines a cooking cavity 12 with an open top, a cooker cover 20 is arranged on the cooker body 10, the cooker cover 20 can move between an open position and a closed position, the cooker cover 20 is provided with an air suction hole 21 and a pressure relief hole 22, the cooker cover 20 is further provided with an electromagnetic valve 23, the electromagnetic valve 23 is connected between the air suction hole 21 and an air suction device 30, and the electromagnetic valve 23 is used for controlling the on-off between the air suction hole 21 and the air suction device 30.
Air extractor 30 is used for extracting air to cooking chamber 12, pressure relief device 40 is used for opening and closing pressure relief hole 22, temperature-detecting device 50 is used for detecting the temperature in cooking chamber 12, and controlling means communicates with air extractor 30 and temperature-detecting device 50.
In the water absorption stage or the stewing stage of the cooking utensil, the control device can control the pressure relief device 40 to close the pressure relief hole 22, and simultaneously control the electromagnetic valve 23 to cut off the passage between the air exhaust hole 21 and the air exhaust device 30, so that the inside of the cooking cavity 12 is kept in a closed state to avoid the loss of aroma and water vapor.
The heat preservation control method of the cooking appliance comprises the following steps:
after a user selects a cooking mode, the product works according to the selected mode, a heat preservation stage is started after the cooking work is finished, the cooking mode of the cooking appliance is detected, whether the cooking mode is a rice cooking mode is judged, and when the cooking mode is detected to be the rice cooking mode, a vacuum heat preservation process is carried out.
Specifically, the control device controls the heating device to stop heating, controls the air exhaust device to exhaust air to the cooking cavity, obtains a state that the pressure in the cooking cavity reaches a preset pressure P0 when the air exhaust time of the air exhaust device to the cooking cavity reaches t, and controls the air exhaust device to stop exhausting air.
Along with the extension of heat preservation time, the temperature in the cooking chamber continuously reduces, and temperature detection device carries out real-time detection to the temperature in the cooking chamber.
When the temperature detection device detects that the temperature in the cooking cavity is lower than a first preset temperature T1, the control device controls the air extraction device to work so as to extract air from the cooking cavity and avoid great change of the pressure in the cooking cavity; when the temperature in the cooking cavity is detected to be lower than a second preset temperature T2, the heating device is controlled to be started to heat, and the heat preservation effect is prevented from being influenced by the temperature reduction in the cooking cavity; then the temperature in the cooking cavity rises, when the temperature detection device detects that the temperature in the cooking cavity rises to a third preset temperature T3, the control device controls the heating device to stop heating, and then controls the air exhaust device to stop exhausting air.
Wherein the first preset temperature T1 is 73 ℃, the second preset temperature T2 is 65 ℃, and the third preset temperature T3 is 79 ℃.
Fig. 4 shows a relationship diagram of the heat preservation stage time, the temperature and the pressure, wherein m is a heat preservation stage curve diagram of the cooking appliance in the embodiment of the present invention, and n is a heat preservation stage curve diagram of the cooking appliance in the prior art, pressure fluctuation in the cooking cavity is large in the prior art, through practical verification, the pressure in the cooking cavity in the embodiment of the present invention can be always maintained at a preset pressure P0, the pressure fluctuation is small, and the cooked food has good taste and good quality.
According to the cooking appliance disclosed by the embodiment of the invention, the air exhaust device is controlled to work after the preset pressure P0 is reached, so that the problem of pressure rise caused by temperature rise in the heating process in the heat preservation stage is solved, and the stability of the pressure in the cooking cavity is ensured; the starting and stopping of the air extracting device and the heating device are controlled by detecting the temperature in the cooking cavity, so that the delay time of pressure reduction does not exist, and the waiting time of a pressure recovery process does not exist, the problems of poor heat preservation effect and short heat preservation time are thoroughly solved, and the use experience of a user is improved; in addition, a pressure detection device is omitted, the structure is simplified, components are reduced, the cost is reduced, and the market competitiveness of the cooking appliance is improved.
Other constructions and operations of the cooking appliance 100 according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (17)

1. A heat preservation control method of a cooking appliance is characterized by comprising the following steps:
when the cooking appliance enters a heat preservation stage, controlling the heating device to reduce heating power, and controlling the air exhaust device to exhaust air from the cooking cavity;
controlling the air exhaust device to stop exhausting air when the pressure in the cooking cavity reaches a preset pressure;
controlling the heating device to increase the heating power, and controlling the air exhaust device to be started at the same time when the heating device increases the heating power, or controlling the air exhaust device to be started before the heating device increases the heating power;
controlling the heating device to reduce the heating power, and controlling the air exhaust device to stop at the same time when the heating device reduces the heating power, or controlling the air exhaust device to stop after the heating device reduces the heating power;
and controlling the starting and stopping of the air exhaust device according to the detected temperature in the cooking cavity or by monitoring the working state of the heating device.
2. The heat preservation control method of the cooking appliance according to claim 1, wherein the step of controlling the air extractor to be turned on or off according to the detected temperature in the cooking cavity comprises the steps of:
detecting that the temperature in the cooking cavity is reduced to be lower than a first preset temperature, and controlling the air exhaust device to exhaust air;
and when the temperature in the cooking cavity is detected to be reduced to be lower than a second preset temperature, the heating device is controlled to increase the heating power, and the first preset temperature is greater than or equal to the second preset temperature.
3. The method for controlling the heat preservation of the cooking appliance according to claim 2, further comprising, after the heating means boosts the heating power and the air-extracting means operates:
and detecting that the temperature in the cooking cavity rises to a third preset temperature, and controlling the heating device to reduce the heating power, wherein the third preset temperature is higher than the first preset temperature.
4. The method for controlling the heat preservation of the cooking appliance according to claim 3, further comprising, after the heating means boosts the heating power and the air-extracting means operates:
and controlling the air exhaust device to stop exhausting air when the temperature in the cooking cavity is detected to rise to a fourth preset temperature, wherein the fourth preset temperature is greater than or equal to the third preset temperature.
5. The insulation control method of the cooking appliance according to claim 3, wherein the first preset temperature is 69 ℃ -75 ℃; and/or, the second preset temperature is 59-65 ℃; and/or, the third preset temperature is 74-80 ℃.
6. The heat preservation control method of the cooking appliance according to claim 1, wherein the controlling the pumping device to start and stop by monitoring the working state of the heating device comprises:
when the heating device is monitored to increase the heating power, controlling the air exhaust device to work simultaneously;
and when the heating device is monitored to reduce the heating power, the air exhaust device is controlled to stop working at the same time, or the air exhaust device is controlled to stop air exhaust after the heating device reduces the heating power and reaches a preset time.
7. The heat preservation control method of the cooking appliance according to claim 6, wherein the heating device is controlled to increase the heating power when the temperature in the cooking cavity is detected to be lower than a second preset temperature; and/or the presence of a gas in the gas,
and controlling the heating device to reduce the heating power when the temperature in the cooking cavity is detected to be increased to be higher than a third preset temperature.
8. The insulation control method of a cooking appliance according to claim 1, further comprising:
detecting a cooking mode of the cooking appliance;
when the cooking mode is detected to be the cooking mode and the cooking appliance enters the heat preservation stage, the heating device is controlled to reduce the heating power, the air exhaust device is controlled to exhaust air from the cooking cavity, and the air exhaust is stopped when the pressure in the cooking cavity reaches the preset pressure.
9. A computer-readable storage medium, characterized in that a computer program is stored thereon, which when executed implements a control method of a cooking appliance according to any one of claims 1-8.
10. A control device for a cooking appliance, comprising:
the detection module is used for detecting the temperature in the cooking cavity or monitoring the working state of the heating device;
the control module is communicated with the detection module, controls the heating device to reduce heating power when the cooking appliance enters a heat preservation stage, controls the air exhaust device to stop exhausting air when the pressure in the cooking cavity reaches a preset pressure,
the control module controls the heating device to increase the heating power and controls the air exhaust device to be started at the same time when the heating device increases the heating power, or controls the air exhaust device to be started before the heating device increases the heating power;
the control module controls the heating device to reduce heating power and controls the air exhaust device to stop while the heating device reduces heating power, or controls the air exhaust device to stop after the heating device reduces heating power;
the control module controls the air exhaust device to be started or stopped according to the temperature in the cooking cavity detected by the detection module or the working state of the heating device monitored by the detection module.
11. The control device of a cooking appliance according to claim 10,
the detection module detects that the temperature in the cooking cavity is reduced to be lower than a first preset temperature, and the control module controls the air exhaust device to exhaust air;
the detection module detects that the temperature in the cooking cavity is reduced to a second preset temperature, the control module controls the heating device to increase the heating power, and the first preset temperature is greater than or equal to the second preset temperature.
12. The control device of the cooking appliance according to claim 11, wherein the detection module detects that the temperature in the cooking cavity rises above a third preset temperature, and the control module controls the heating device to reduce the heating power.
13. The control device of the cooking appliance according to claim 12, wherein the detection module detects that the temperature in the cooking cavity rises above a fourth preset temperature, and the control module controls the air extractor to stop extracting air, wherein the fourth preset temperature is greater than or equal to the third preset temperature.
14. The control device of a cooking appliance according to claim 10,
the detection module detects that the heating device improves heating power and controls the air exhaust device to work;
the detection module detects that the heating device reduces the heating power, and controls the air exhaust device to stop working at the same time, or controls the air exhaust device to stop air exhaust after the heating device reduces the heating power and reaches a preset time.
15. The control device of the cooking appliance according to claim 14, wherein the detection module detects that the temperature in the cooking cavity falls below a second preset temperature, and the control module controls the heating device to increase the heating power.
16. The control device of the cooking appliance according to claim 10, wherein the detection module is further configured to detect a cooking mode of the cooking appliance,
when the detection module detects that the cooking mode is a cooking mode and the cooking appliance enters a heat preservation stage, the control module controls the heating device to reduce heating power and controls the air exhaust device to stop exhausting air when the pressure in the cooking cavity reaches a preset pressure.
17. A cooking appliance, characterized in that a control device of the cooking appliance according to any one of claims 10-16 is used.
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CN113520148B (en) * 2021-08-30 2022-04-08 广东美的厨房电器制造有限公司 Control method and control device of cooking equipment, cooking equipment and storage medium

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