CN114468734A - Cooking appliance and control method thereof - Google Patents

Cooking appliance and control method thereof Download PDF

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Publication number
CN114468734A
CN114468734A CN202011255046.XA CN202011255046A CN114468734A CN 114468734 A CN114468734 A CN 114468734A CN 202011255046 A CN202011255046 A CN 202011255046A CN 114468734 A CN114468734 A CN 114468734A
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CN
China
Prior art keywords
temperature
cooking
cooking container
bracket
heating
Prior art date
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Granted
Application number
CN202011255046.XA
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Chinese (zh)
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CN114468734B (en
Inventor
郑怀旭
程志喜
张帆
吕伟刚
杨云
薛钊强
梅若愚
刘云祥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
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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Priority to CN202011255046.XA priority Critical patent/CN114468734B/en
Publication of CN114468734A publication Critical patent/CN114468734A/en
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Publication of CN114468734B publication Critical patent/CN114468734B/en
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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
    • A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for 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
    • A47J36/00—Parts, details or accessories of 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
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/32—Time-controlled igniting mechanisms or alarm devices
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/26—Pc applications
    • G05B2219/2643—Oven, cooking
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Cookers (AREA)

Abstract

The invention discloses a cooking appliance and a control method thereof, wherein the cooking appliance comprises: a cooking body including a cooking container and a heating device for heating the cooking container; the cover body assembly is buckled on the cooking main body, and a cooking cavity is defined between the cover body assembly and the cooking main body; temperature detection means that is in contact with a wall of the cooking container to detect a temperature of the cooking container; and the control device is communicated with the temperature detection device so as to obtain the air pressure in the cooking cavity according to the detection result of the temperature detection device. According to the cooking appliance provided by the embodiment of the invention, the temperature detection device is arranged in the cooking appliance, so that the temperature change of the cooking container in the whole cooking process can be detected, the service life of the temperature detection device is prolonged, the cover body assembly is ensured to be free of a power supply, and the detachable cleaning is realized.

Description

Cooking appliance and control method thereof
Technical Field
The invention relates to the field of household appliances, in particular to a cooking appliance and a control method of the cooking appliance.
Background
In a cooking appliance in the related art, an NTC temperature detecting device is generally disposed on a lid assembly to directly sense a temperature of gas in a pot, but if water in the pot does not boil, the temperature of the gas detected by the temperature detecting device cannot be used as a cooking reference, and the lid assembly generally has a power supply and cannot be detached separately for cleaning, which makes cleaning difficult.
And the bottom of the inner pot of the other cooking utensil is provided with a pressure switch, and the pressure switch is used for sensing the downward moving position of the inner pot to detect and control the pressure, but the deformation of the pressure switch is gradually attenuated, so that the service life of the product is influenced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, an object of the present invention is to propose a cooking appliance that inductively controls the entire cooking process, while increasing the lifetime of the product.
The invention further provides a control method of the cooking appliance.
A cooking appliance according to an embodiment of a first aspect of the present invention includes: a cooking body including a cooking container and a heating device for heating the cooking container; the cover body assembly is provided with a buckling tooth buckled with the cooking main body, and a cooking cavity is defined between the cover body assembly and the cooking container under the state that the cover body assembly is buckled with the cooking main body; temperature detection means that is in contact with a wall of the cooking container to detect a temperature of the cooking container; and the control device is communicated with the temperature detection device so as to obtain the air pressure in the cooking cavity according to the detection result of the temperature detection device.
According to the cooking appliance provided by the embodiment of the invention, the temperature detection device is arranged in the cooking appliance, so that the temperature change of the cooking container in the whole cooking process can be detected, the service life of the temperature detection device is prolonged, the cover body assembly is ensured to be free of a power supply, and the detachable cleaning is realized.
According to some embodiments of the invention, the temperature detection device is disposed below the cooking container, and the temperature detection device is in contact with an outer surface of a bottom wall of the cooking container.
According to some embodiments of the invention, the temperature detection device comprises: a detection body in contact with a wall of the cooking vessel; a heat insulating portion extending in a circumferential direction of the detection body and separating the detection body from the heating device.
In some embodiments, an end of the detection body facing the cooking container extends out of the heat insulation part, and the length of the detection body extending out of the heat insulation part is 1mm-5 mm; and/or, the temperature detection device comprises: the detection body is arranged on the support, the detection body is arranged on the cooking main body through the support, and the elastic piece is matched with the support to normally push the detection body to stop against the wall of the cooking container.
In some embodiments, the temperature detection device comprises a bracket and an elastic member, the detection body is arranged on the bracket, the detection body is arranged on the cooking main body through the bracket, and the elastic member is matched with the bracket to normally push the detection body to stop against the wall of the cooking container; wherein at least a portion of the bracket forms the thermal shield; or a sealing element is arranged between the bracket and the detection body, and the sealing element forms the heat insulation part.
In some specific examples, the temperature detection device comprises a bracket and an elastic member, the detection body is arranged on the bracket, the detection body is arranged on the cooking main body through the bracket, and the elastic member is matched with the bracket to normally push the detection body to stop against the wall of the cooking container; the cooking main body further comprises an outer pot, the cooking container is arranged in the outer pot, the heating device is located between the outer pot and the cooking container, and the elastic piece is matched between the support and the outer pot.
In some embodiments, the bracket is movably mounted on the bottom wall of the outer pan, the bracket has a first limiting portion, and the elastic member is fitted between the first limiting portion and the bottom wall of the outer pan.
In some embodiments, the bottom wall of the outer pan has a through hole, and the bracket includes: at least one part of the first bracket seat is arranged on the outer side of the bottom wall of the outer pot; the first support cover is arranged on the inner side of the bottom wall of the outer pot, at least one of the first support cover and the first support seat penetrates through the through hole and is matched with the other one, so that the detection body is arranged on the bottom wall of the outer pot, and the heat insulation part is formed by at least one of the first support cover and the first support seat.
In some embodiments, the first cradle cover surrounds the detection body, the first cradle cover being a piece of high temperature resistant material to form the thermal insulation; and/or the first limiting part is formed on one of the first bracket seat and the first bracket cover.
In some specific examples, the bracket is movably arranged between the bottom wall of the outer pot and the heating device, wherein the bracket is provided with a second limiting part which is suitable for stopping against the heating device so as to limit the bracket between the bottom wall of the outer pot and the heating device; the bracket comprises a second bracket seat and a second bracket cover, the second bracket cover is connected with the second bracket seat, one end of the detection body, facing the cooking container, extends out of the second bracket cover, a sealing element is arranged between the second bracket cover and the detection body, and the sealing element forms the heat insulation part; the middle part of the heating device is provided with an opening for the penetration of the detection probe of the detection body, and the second limiting part is formed on the second bracket seat or the second bracket cover so as to be suitable for stopping the edge of the opening.
According to the second aspect of the present invention, the cooking appliance includes a cooking container, a cover assembly and a heating device for heating the cooking container, the cover assembly is adapted to define a cooking cavity with the cooking container, the cooking appliance further includes a temperature detection device for detecting a temperature of the cooking container, the cooking appliance obtains an air pressure in the cooking cavity according to a detection result of the temperature detection device, and the control method includes the following steps: controlling the heating device to heat the cooking container; controlling the temperature detection device to detect the temperature of the cooking container and acquiring the temperature rising speed of the cooking container; and comparing the temperature rising speed with a preset value, and controlling the heating device according to a comparison result.
According to the control method of the cooking appliance, the obtained temperature rising speed of the cooking container is compared with the preset value, whether the water quantity in the cooking container is the first-level water quantity or the second-level water quantity can be judged, the influence degree of the heating device on the detection result of the temperature detection device is obtained, the heating device is controlled according to specific conditions, the influence of the heating device on the detection result of the temperature detection device is reduced as much as possible, namely the influence of the heating device on the obtained air pressure condition in the cooking cavity is reduced, and the situation that the direct heating air pressure is too high is prevented.
According to some embodiments of the invention, the obtaining of the temperature rise speed of the cooking container comprises: controlling the temperature detection device to detect that the temperature of the cooking container is a first temperature, and starting timing; when the temperature detection device detects that the temperature of the cooking container reaches a second temperature, timing is finished; calculating a temperature rise rate of the cooking container within a timed time period.
According to some embodiments of the invention, the controlling the heating device according to the comparison result comprises: determining that the temperature rising speed is greater than the preset value, and controlling the heating device to continue heating until the temperature of the cooking container reaches the set temperature; and determining that the temperature rising speed is less than or equal to the preset value, calculating the heating time required for heating the cooking container to the set temperature according to the temperature rising speed, and controlling the heating device to continue heating until the time for continuing heating of the heating device reaches the heating time.
In some embodiments, the controlling the heating device to continue heating until the temperature of the cooking container reaches the set temperature further comprises: and controlling the heating device to intermittently heat so that the temperature of the cooking container is not higher than the set temperature.
In some examples, the controlling the heating device to heat intermittently includes: controlling the heating device to intermittently heat until the nth time of the temperature of the cooking container reaches the set temperature.
In some embodiments, said controlling said heating device to continue heating until after said heating device continues heating for said heating time, further comprises: determining that the current temperature of the cooking container is less than the set temperature, recalculating the heating time required for heating the cooking container to the set temperature according to the temperature rising speed, and controlling the heating device to continue heating until the time for continuing heating of the heating device reaches the recalculated heating time; and determining that the current temperature of the cooking container is greater than or equal to the set temperature, and controlling the heating device to stop heating.
In some embodiments, the set temperature is 75 ℃ to 85 ℃.
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 an assembly view of a cooking appliance according to an embodiment of the present invention;
FIG. 2 is an enlarged view of section A shown in FIG. 1;
FIG. 3 is an exploded schematic view of a portion of the structure of the cooking appliance shown in FIG. 1;
fig. 4 is an assembly view of a cooking appliance according to another embodiment of the present invention;
FIG. 5 is an enlarged view of portion B shown in FIG. 4;
FIG. 6 is an exploded schematic view of a portion of the structure of the cooking appliance shown in FIG. 4;
fig. 7 is a flowchart of a control method of a cooking appliance according to an embodiment of the present invention;
fig. 8 is a flowchart of a control method of a cooking appliance according to another embodiment of the present invention;
fig. 9 is a flowchart of a control method of a cooking appliance according to still another embodiment of the present invention.
Reference numerals:
in the cooking appliance (100), a cooking key is provided,
a cooking body 10, a cooking container 101, a heating means 102, an opening 1021, an outer pot 103, a through hole 1031,
the cover assembly 20 is provided with a cover body assembly,
the temperature detection device 30 includes a detection body 301, a holder 302, a first holder 3021, a first holder cover 3022, a first stopper 3023, a second holder 3024, a second holder cover 3025, a second stopper 3026, a sealing member 3027, and an elastic member 303.
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.
A cooking appliance 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 6.
As shown in fig. 1 to 6, a cooking appliance 100 according to an embodiment of the present invention includes: cooking body 10, lid assembly 20, temperature detection device 30 and control device.
The cooking body 10 includes a cooking container 101 for placing food to be processed, and a heating device 102 for heating 301 the cooking container 101. The cover assembly 20 has a tooth engaged with the cooking body 10, and a cooking cavity is defined between the cover assembly 20 and the cooking container 101 in a state where the cover assembly 20 is engaged with the cooking body 10. Wherein, the cover assembly 20 is detachably disposed on the cooking main body 10, or the cover assembly 20 is pivotally disposed on the cooking main body 10.
The temperature detecting device 30 is in contact with a wall of the cooking container 101 to detect the temperature of the cooking container. The control device is in communication with the temperature detection device 30 for obtaining the air pressure in the cooking cavity according to the detection result of the temperature detection device 30.
When the cooking appliance 100 starts to work, the heating device 102 heats the cooking container 101, the temperature of the cooking container 101 rises, the temperature detection device 30 can detect the temperature change of the outer wall surface of the cooking container 101, the detection result is transmitted to the control device, and the control device analyzes the temperature detection result to obtain the air pressure value in the cooking cavity. For example, the control device can convert the temperature value detected by the temperature detection device 30 into the air pressure value according to the geometric transformation principle of the temperature value and the air pressure value detected by the temperature detection device 30, and control the pressure in the cooking cavity, so that the cooking requirement is met, and the advantages of no electrification of the cover body assembly 20, simple assembly, long service life and the like are achieved.
Specifically, during cooking, as the temperature of the cooking container 101 increases, the steam in the cooking container 101 increases, and the air pressure in the cooking cavity increases. The temperature of the cooking container 101 is sensed by the temperature sensing device 30, the pressure change in the cooking container 101 can be known by analyzing the temperature change in the cooking container 101, and the heating device 102 is controlled by the control device to heat the cooking container 101 with different powers.
Thus, by detecting the temperature of the cooking container 101 and thereby knowing the change in pressure in the cooking container 101, there is no need to provide a pressure sensor as in the related art. It should be noted that, since the temperature change corresponding to the pressure is relatively small, the sensitivity of the temperature detection device 30 is required to be higher in order to make the detection result more accurate and sensitive.
According to the cooking appliance 100 of the embodiment of the invention, by contacting the temperature detection device 30 with the wall of the cooking container 101, not only can the temperature change of the cooking container 101 in the whole cooking process be detected, and the air pressure in the cooking cavity can be obtained according to the detected temperature, but also the cover body assembly 20 can be ensured to have no power supply, the assembly is simple, and the detachable cleaning is realized.
As shown in fig. 1 and 2, according to some embodiments of the present invention, the temperature detection device 30 is disposed under the cooking container 101, and the temperature detection device 30 is in contact with an outer surface of a bottom wall of the cooking container 101.
That is to say, in the cooking appliance 100, during the cooking process, the temperature detection device 30 can detect the temperature change of the outer bottom wall of the cooking container 101 in the whole process, so as to obtain the pressure change in the cooking cavity according to the detected temperature value, implement pressure control, and implement the effect of no electricity in the cover assembly 20, thereby facilitating the cleaning of the cover assembly 20, and making the assembly process of the temperature detection device 30 simpler and more convenient.
As shown in fig. 2, according to some embodiments of the present invention, the temperature detection device 30 includes: a detection body 301 in contact with the wall of the cooking container 101, and a heat insulating portion extending in the circumferential direction of the detection body 301 and separating the detection body 301 from the heating device 102.
Therefore, the heat insulation part is arranged in the circumferential direction of the detection body 301, the heat insulation part wraps the periphery of the detection body 301, the detection body 301 is separated from the heating device 102, the detection body 301 is prevented from being in direct contact with the heating device 102, the influence of the heating device 102 on the temperature detection of the detection body 301 during operation is reduced, and the temperature change of the cooking container 101 is detected only by the contact of one end of the detection body 301 with the wall of the cooking container 101.
As shown in fig. 2 and 3, in some embodiments, one end of the detection body 301 facing the cooking container 101 extends out of the thermal insulation part, and the length of the detection body 301 extending out of the thermal insulation part is 1mm to 5 mm.
For example, the length of the detection body 301 protruding outside the heat insulating part may be 1mm, 2mm, 3mm, 4mm, and 5 mm. The detection body 301 extends out of the heat insulation part towards one end of the cooking container 101, only one end of the detection body 301 is in contact with the wall of the cooking container 101, the detection body 301 can be prevented from being influenced by environmental heat in the temperature detection process, the length of the heat insulation part extending out of the detection body 301 is set to be 1mm-5mm, good contact between the detection body 301 and the cooking container 101 can be guaranteed, and the temperature of the cooking container 101 can be measured more accurately.
It should be noted that the length of the detection body 301 extending out of the thermal insulation portion is not too long to avoid the influence of the environmental heat. The extension length of the detection body 301 is not too short, so that poor contact with the cooking container 101 is avoided, and the temperature cannot be accurately measured.
As shown in fig. 2, 4 and 5, in some specific examples, the temperature detection device 30 includes a bracket 302 and an elastic member 303, the detection body 301 is disposed on the bracket 302, the detection body 301 is disposed on the cooking main body 10 through the bracket 302, and the elastic member 303 cooperates with the bracket 302 to normally push the detection body 301 against the wall of the cooking container 101.
To detect body 301 and support 302 assembly together, set up support 302 and detection body 301 on culinary art main part 10 again, can fix the position of detecting body 301 on culinary art main part 10, prevent when removing cooking utensil 100, make the position that detects body 301 take place to remove, influence the accuracy that the temperature detected, set up corresponding elastic component 303 simultaneously, through elastic component 303 and support 302 cooperation, elastic component 303 is used for promoting and detects body 301, make the one end of detecting body 301 end support with the wall of culinary art container 101, guarantee that the temperature detects and go on smoothly.
As shown in fig. 2 and 3, in some embodiments, at least a portion of the bracket 302 forms an insulating portion. For example, a part of the bracket 302 may be made of a heat insulating material, or the entire bracket 302 may be made of a heat insulating material.
Therefore, at least one part of the bracket 302 forms a heat insulation part, the bracket 302 can isolate the influence of the ambient heat on the temperature detection of the detection body 301, so that the detection result is more accurate, the loss of the bracket 302 in a high-temperature environment can be reduced, and the service life of the bracket 302 is prolonged.
As shown in fig. 6, in some specific examples, a seal 3027 is provided between the holder 302 and the detection body 301, and the seal 3027 forms a heat insulating portion. By providing the seal 3027 between the holder and the detection body 301, the influence of the heating device 102 on the detection body 301 at the time of detecting the temperature is isolated by the seal 3027, while reducing the heat exchange between the holder 302 and the detection body 301.
As shown in fig. 1 and 4, in some specific examples, the cooking body 10 further includes an outer pot 103, the cooking container 101 is disposed inside the outer pot 103, the heating device 102 is located between the outer pot 103 and the cooking container 101, and the elastic member 303 is fitted between the bracket 302 and the outer pot 103.
Wherein, the heating device 102 is disposed between the outer pot 103 and the cooking container 101, and the heating device 102 is in contact with the cooking container 101 for heating the cooking container 101. The elastic member 303 is engaged between the bracket 302 and the outer pot 103, so that the bracket 302 can be pushed to move in a direction away from the outer pot 13, and one end of the detection body 301 on the bracket 302 is prevented from abutting against the outer wall of the cooking container 101, thereby ensuring that temperature detection is performed smoothly.
As shown in fig. 1 and 4, in some embodiments, the bracket 302 is movably mounted on the bottom wall of the outer pot 103, the bracket 302 has a first position-limiting portion 3023, and the elastic member 303 is fitted between the first position-limiting portion 3023 and the bottom wall of the outer pot 103.
In the installation process, if the position of the bracket 302 deviates, the position of the bracket 302 can be adjusted as required, so that one end of the detection body 301 on the bracket 302 can be in contact with the bottom wall of the cooking container 101, and the temperature detection is ensured to be carried out smoothly. Meanwhile, when the detection body 301 is damaged, the bracket 302 can be conveniently mounted and dismounted. Through set up first spacing portion 3023 on the support to make the size of first spacing portion 3023 be greater than the size of elastic component 303, avoid the elastic component 303 size too big, break away from the cooperation with support 302, lead to unable to play location and impetus to detecting body 301.
As shown in fig. 2 and 3, in some embodiments, the bottom wall of the outer pot 103 has a through hole 1031, the bracket 302 includes a first bracket base 3021 and a first bracket cover 3022, at least a portion of the first bracket base 3021 is disposed on the outer side of the bottom wall of the outer pot 103, at least a portion of the first bracket cover 3022 is disposed on the inner side of the bottom wall of the outer pot 103, at least one of the first bracket cover 3022 and the first bracket base 3021 passes through the through hole 1031 and cooperates with the other, so that the bracket 302 is mounted on the bottom wall of the outer pot 103, and the detection body 301 is mounted on the bottom wall of the outer pot 103. Wherein at least one of the first bracket cover 3022 and the first bracket base 3021 forms a heat insulating part.
Specifically, the first bracket cover 3022 and the first bracket base 3021 may be fastened and fixed up and down, so that the assembly process is more convenient. Of course, the first bracket cover 3022 and the first bracket base 3021 may be provided with mounting holes, respectively, so that the first bracket cover and the first bracket base are connected together by a fastener, and the connection is more secure.
The first rack cover 3022 is assembled with the first rack mount 3021, and the rack 302 can pass through the through hole 1031 of the bottom wall of the outer pot 103 and can move along the center line of the through hole 1031, and since the elastic member 303 is disposed between the rack 302 and the outer pot 103, it can be ensured that the rack 302 moves by an external force and is restored by the elastic member 303 after the external force is removed. In this process, the detection body 301 moves along with the support 302, ensuring that one end of the detection body 301 can contact the bottom wall of the cooking container 101.
As shown in fig. 1-3, in some embodiments, a first bracket cover 3022 surrounds the detection body 301, and the first bracket cover 3022 is a piece of high temperature resistant material to form a thermal shield. The first bracket cover 3022 wraps the detection body 301, so that one end of the detection body 301 is exposed, and only one end of the detection body 301 is in contact with the wall of the cooking container 101 to detect temperature change, thereby avoiding the influence of the heating device 102 on the temperature measurement of the detection body 301 and ensuring the accuracy of temperature detection.
As shown in fig. 2 and 3, in some specific examples, a first stopper portion 3023 is formed on one of the first bracket base 3021 and the first bracket cover 3022. Specifically, the first stopper portion 3023 may be formed on the first holder base 3021 or the first holder cover 3022, but it is necessary to ensure that the size of the first stopper portion 3023 is larger than that of the elastic member 303 to prevent the elastic member 303 from being disengaged from the first stopper portion 3023. Through setting up first spacing portion 3023, can carry on spacingly to elastic component 303, guarantee the accuracy that temperature-detecting device 30 detected the temperature.
As shown in fig. 4-6, in some specific examples, the bracket 302 is movably disposed between the bottom wall of the outer pot 103 and the heating device 102, wherein the bracket 302 has a second limiting portion 3026, and the second limiting portion 3026 is adapted to stop against the heating device 102, so as to limit the bracket 302 between the bottom wall of the outer pot 103 and the heating device 102, and ensure that one end of the detecting body 301 on the bracket 302 can stop against the cooking container 101, thereby preventing the bracket from moving the position of the detecting body 301 during the movement of the cooking container 101 and affecting the accuracy of temperature detection.
As shown in fig. 4-6, in some embodiments, the cradle 302 includes a second cradle seat 3024 and a second cradle cover 3025, the second cradle cover 3025 being coupled to the second cradle seat 3024. The second holder cover 3025 extends from one end of the detection body 301 facing the cooking vessel 101, a sealing member 3027 is provided between the second holder cover 3025 and the detection body 301, and the sealing member 3027 forms a heat insulating part.
Thus, by connecting the second rack cover 3025 to the second rack holder 3024 and disposing the detection body 301 on the rack 302, the position of the detection body 301 can be fixed by the rack 302, and meanwhile, the detection body 301 extends out of the second rack cover 3025 towards one end of the cooking container 101 and abuts against the bottom wall of the cooking container 101 to detect the temperature change of the cooking container 101. By providing the sealing member 3027 between the second holder cover 3025 and the detection body 301, it is avoided that the heat conducted from the heating device 102 to the second holder cover 3025 affects the detection body 301, i.e. the detection body 301 is affected by the heating device 102 when detecting the bottom wall temperature of the cooking container 101, which results in an error in temperature detection.
As shown in fig. 5 and 6, in some embodiments, the middle portion of the heating device 102 has an opening 1021 through which the detection probe of the detection body 301 passes, a second position-limiting portion 3026 is formed on the second holder base 3024 or the second holder cover 3025, and the second position-limiting portion 3026 is adapted to stop against an edge of the opening 1021. By arranging the second limiting part 3026 on the second holder base 3024 or the second holder cover 3025, the size of the second limiting part 3026 is larger than the size of the opening 1021 in the middle of the heating device 102, so that the second holder cover 3025 is limited, and the situation that the whole holder 302 passes through the heating device 102 and cannot fix the position of the holder 302 is avoided while the detection probe of the detection body 301 passes through the opening 1021.
A specific embodiment of a cooking appliance 100 according to the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1 to 6, the cooking container 101 includes: cooking body 10, lid assembly 20, temperature detection device 30 and control device.
The cooking body 10 includes a cooking container 101 and a heating device 102 for heating the cooking container 101. The cover assembly 20 is disposed above the cooking body 10, and a cooking cavity is defined between the cover assembly 20 and the cooking container 101 for placing food to be processed. The temperature detecting device 30 is disposed between the heating plate and the outer pot 103, and contacts with the bottom wall of the cooking container 101 to detect the temperature of the food material in the cooking cavity.
During cooking, the heating device 102 heats the cooking container 101, the temperature of the cooking container 101 increases, the temperature detecting device 30 detects the temperature change of the cooking container 101, a signal is sent to the control device, and the control device analyzes the temperature detection result of the temperature detecting device 30, so as to obtain the air pressure in the cooking cavity.
Wherein, the temperature detection device 30 includes: detection body 301, thermal-insulated portion, elastic component 303 and support 302. One end of the detection body 301 facing the cooking container 101 extends out of the heat insulation part, and the length of the detection body 301 extending out of the heat insulation part is 1mm-5 mm. The bracket 302 is provided with a bracket cover and a bracket seat, the detection body 301 is arranged on the bracket 302, and the elastic member 303 is matched with the bracket 302 to normally push the detection body 301 to abut against the wall of the cooking container 101, so as to ensure that the detection body 301 can detect the temperature change on the cooking container 101.
A control method of a cooking appliance according to another embodiment of the present invention will be described in detail with reference to the accompanying drawings.
The cooking appliance comprises a cooking container, a cover assembly and a heating device, wherein the cover assembly is suitable for defining a cooking cavity with the cooking container, and the heating device is used for heating the cooking container. The cooking appliance further comprises a temperature detection device, the temperature detection device is used for detecting the temperature of the cooking container, and the cooking appliance obtains the air pressure in the cooking cavity according to the detection result of the temperature detection device.
As shown in fig. 7, the control method according to the embodiment of the present invention includes the steps of:
s1: controlling a heating device to heat the cooking container;
s2: controlling a temperature detection device to detect the temperature of the cooking container and acquiring the temperature rising speed of the cooking container;
s3: and comparing the temperature rising speed with a preset value, and controlling the heating device according to the comparison result.
Because the temperature detection device is used for measuring the temperature of the cooking container, namely the temperature detection device can directly measure the temperature of the wall of the cooking container, which is in contact with the temperature detection device, and the temperature of the wall of the cooking container is not the same as the actual temperature in the cooking cavity, and in addition, the detection result of the temperature detection device is influenced by the heating time of the heating device, when the temperature detection device detects the temperature of the wall of the cooking container, the heating device needs to be controlled to stop heating firstly, and temperature measurement is carried out after the heat of the heating device is dissipated, so that the temperature of the wall of the cooking container, which is detected by the temperature detection device, is close to or corresponds to the temperature in the cooking cavity, and the temperature in the cooking cavity is accurately detected.
It should be noted that the heating device may be disposed at the bottom of the cooking container, so as to achieve bottom heating, and the temperature detection device is disposed near the heating device, so that the temperature detection device may directly detect the bottom temperature of the cooking container, and of course, the heating device may also be disposed at the side of the cooking container, so as to achieve side heating, and the temperature detection device may directly detect the side temperature of the cooking container.
According to the control method of the cooking appliance, the acquired temperature rising speed of the cooking container is compared with the preset value, whether the water quantity in the cooking container is the first-level water quantity or the second-level water quantity can be judged, so that the influence degree of the heating device on the detection result of the temperature detection device is obtained, the heating device is controlled according to specific conditions, the influence of the heating device on the detection result of the temperature detection device is reduced as much as possible, namely the influence of the heating device on the obtained air pressure condition in the cooking cavity is reduced, and the condition that the direct heating air pressure is too high is prevented.
As shown in fig. 7 to 8, according to some embodiments of the present invention, acquiring a temperature rising speed of a cooking container includes:
s21: controlling a temperature detection device to detect that the temperature of the cooking container is a first temperature, and starting timing;
s22: when the temperature detection device detects that the temperature of the cooking container reaches a second temperature, timing is finished;
s23: calculating the temperature rising speed of the cooking container in the timing time period.
Specifically, in some examples, after the heating device heats the cooking container for a period of time, the temperature detection device detects that the temperature of the cooking container is a first temperature T1, and starts timing to avoid the influence of the ambient temperature on the detection result, the temperature of the cooking container continues to rise as the heating device continues to heat the cooking container, and when the temperature detection device detects that the temperature of the cooking container rises to a second temperature T2, the timing is ended, and the timing time is recorded as T, so that the temperature rise speed N of the cooking container during the timing time is calculated, namely the temperature rise speed is equal to (T2-T1)/T.
In other examples, after the cooking appliance is started, the temperature detection device is controlled to detect the temperature of the cooking container, the temperature of the cooking container at the moment is recorded as a first temperature T1, the heating device is controlled to heat the cooking container, the timing is started, and then when the temperature detection device detects that the temperature of the cooking container reaches a second temperature T2, the timing is ended, the timing time is recorded as T, so that the temperature rising speed N of the cooking container in the timing time is calculated, namely the temperature rising speed is equal to (T2-T1)/T.
As shown in fig. 7 and 9, according to some embodiments of the present invention, the controlling of the heating device according to the comparison result includes:
determining that the temperature rising speed is greater than a preset value, and controlling the heating device to continue heating until the temperature of the cooking container reaches a set temperature;
and determining that the temperature rising speed is less than or equal to a preset value, calculating the heating time required for the cooking container to be heated to the set temperature according to the temperature rising speed, and controlling the heating device to continue heating until the time for the heating device to continue heating reaches the heating time.
That is, when the obtained temperature rising speed is greater than the preset value, it is known that the water amount in the cooking container is the first-level water amount, and therefore, if the time required for the heating device to heat the water in the cooking container to the set temperature is long, the influence of the heating device on the detection result of the temperature detection device is large, and during the heating process of the heating device on the cooking container, the actual temperature rising speed of the cooking container is much greater than the temperature rising speed calculated in step S2, and therefore, if the heating device is controlled by using the heating time, the heating device may need to be heated repeatedly for reaching the working pressure. In this embodiment, the heating time of the heating device can be shortened by directly controlling the heating device at the set temperature, and the influence of the heating device on the detection result of the temperature detection device can be reduced.
When the obtained temperature rising speed is less than the preset value, the water quantity in the cooking container is known to be the second-level water quantity, so that the time required by the heating device to heat the water in the cooking container to the set temperature is short, the influence of the heating device on the detection result of the temperature detection device is small, in the embodiment, the heating device is controlled by the calculated heating time, the control of the pressure in the cooking cavity can be realized, and the condition that the direct heating air pressure is too high is avoided. Wherein the first level of water is greater than the second level of water.
As shown in fig. 7 and 9, in some embodiments, after controlling the heating device to continue heating until the temperature of the cooking container reaches the set temperature, the method further includes: the heating device is controlled to intermittently heat so that the temperature of the cooking container is not higher than the set temperature.
Specifically, when the temperature detection device detects that the temperature of the portion of the cooking container is higher than the set temperature, the heating device is controlled to stop heating, and when the temperature detection device detects that the temperature of the cooking container is lower than the set temperature, the heating device is controlled to continue heating, so that the temperature of the cooking container is kept at a level not higher than the set temperature, and pressure control is realized.
In some examples, controlling the heating device to heat intermittently comprises: and controlling the heating device to intermittently heat until the temperature of the cooking container reaches the set temperature for the nth time.
For example, the heating device is controlled to continue heating, so that the temperature of the cooking container is increased from the second temperature T2 to the set temperature, then the heating device is controlled to stop heating, when the temperature detection device detects that the temperature of the cooking container is reduced and lower than the set temperature, the heating device is controlled to continue heating until the temperature of the cooking container reaches the set temperature again, in such a reciprocating manner, when the temperature of the cooking container reaches the set temperature for the nth time (for example, the 3 rd time), the working state of the cooking appliance is displayed, that is, the air pressure in the cooking cavity reaches the working pressure (for example, 40Kpa), the cooking countdown is started, and when the countdown is completed, the cooking stage is completed.
As shown in fig. 7 and 9, in some embodiments, after controlling the heating device to continue heating until the time for which the heating device continues heating reaches the heating time, the method further includes:
determining that the current temperature of the cooking container is less than the set temperature, recalculating the heating time required for heating the cooking container to the set temperature according to the temperature rising speed, and controlling the heating device to continue heating until the time for continuing heating of the heating device reaches the recalculated heating time;
and determining that the current temperature of the cooking container is greater than or equal to the set temperature, and controlling the heating device to stop heating.
Specifically, after the heating device heats the temperature of the cooking container from the second temperature T2 to the heating time for the first calculated heating time, when the temperature detection device detects that the current temperature of the cooking container is less than the set temperature, the time required for the heating device to heat the temperature of the cooking container from the current temperature to the set temperature is recalculated according to the temperature rise speed, and then the heating device is controlled to continue heating until the time for the heating device to continue heating reaches the recalculated heating time. When the temperature detection device detects that the current temperature of the cooking container does not rise any more and is higher than the set temperature, the working state of the cooking appliance is displayed, namely the air pressure in the cooking cavity reaches the working pressure (for example 40Kpa), the cooking countdown is started, and after the countdown is finished, the cooking stage is finished.
In some embodiments, the set temperature is 75 ℃ to 85 ℃. For example, the set temperature may be 75 ℃, 78 ℃, 80 ℃, 82 ℃, or 85 ℃.
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.
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 device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
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 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 cooking appliance, comprising:
a cooking body including a cooking container and a heating device for heating the cooking container;
the cover body assembly is provided with a buckling tooth buckled with the cooking main body, and a cooking cavity is defined between the cover body assembly and the cooking container under the state that the cover body assembly is buckled with the cooking main body;
temperature detection means that is in contact with a wall of the cooking container to detect a temperature of the cooking container;
and the control device is communicated with the temperature detection device so as to obtain the air pressure in the cooking cavity according to the detection result of the temperature detection device.
2. The cooking appliance according to claim 1, wherein the temperature detecting means is provided below the cooking container, and the temperature detecting means is in contact with an outer surface of a bottom wall of the cooking container.
3. The cooking appliance according to claim 1, wherein the temperature detecting means comprises:
a detection body in contact with a wall of the cooking vessel;
a heat insulating portion extending in a circumferential direction of the detection body and separating the detection body from the heating device.
4. The cooking appliance according to claim 3, wherein an end of the detection body facing the cooking container extends outside the heat insulation portion, and a length of the detection body extending outside the heat insulation portion is 1mm to 5 mm; and/or the presence of a gas in the gas,
the temperature detection device comprises a support and an elastic piece, the detection body is arranged on the support, the detection body is arranged on the cooking main body through the support, and the elastic piece is matched with the support to normally push the detection body to stop against the wall of the cooking container.
5. The cooking appliance according to claim 3, wherein the temperature detecting device comprises a bracket and an elastic member, the detecting body is arranged on the bracket, the detecting body is arranged on the cooking main body through the bracket, and the elastic member is matched with the bracket to normally push the detecting body to stop against the wall of the cooking container;
wherein at least a portion of the bracket forms the thermal shield; or a sealing element is arranged between the bracket and the detection body, and the sealing element forms the heat insulation part.
6. The cooking appliance according to claim 3, wherein the temperature detecting device comprises a bracket and an elastic member, the detecting body is arranged on the bracket, the detecting body is arranged on the cooking main body through the bracket, and the elastic member is matched with the bracket to normally push the detecting body to stop against the wall of the cooking container;
the cooking main body further comprises an outer pot, the cooking container is arranged in the outer pot, the heating device is located between the outer pot and the cooking container, and the elastic piece is matched between the support and the outer pot.
7. The cooking appliance of claim 6, wherein the bracket is movably mounted to the bottom wall of the outer pot, the bracket having a first position limiting portion, and the resilient member is fitted between the first position limiting portion and the bottom wall of the outer pot.
8. The cooking appliance of claim 7, wherein the bottom wall of the outer pan has a through hole, the bracket comprising:
at least one part of the first bracket seat is arranged on the outer side of the bottom wall of the outer pot;
at least one part of the first bracket cover is arranged on the inner side of the bottom wall of the outer pot, at least one of the first bracket cover and the first bracket seat penetrates through the through hole and is matched with the other one so as to arrange the detection body on the bottom wall of the outer pot,
wherein at least one of the first bracket cover and the first bracket base forms the insulating portion.
9. The cooking appliance of claim 8, wherein the first cradle cover surrounds the detection body, the first cradle cover being a piece of high temperature resistant material to form the thermal insulation; and/or the first limiting part is formed on one of the first bracket seat and the first bracket cover.
10. The cooking appliance of claim 6, wherein the bracket is movably disposed between the bottom wall of the outer pot and the heating device, the bracket having a second position-limiting portion adapted to abut against the heating device to limit the bracket between the bottom wall of the outer pot and the heating device;
the bracket comprises a second bracket seat and a second bracket cover, the second bracket cover is connected with the second bracket seat, one end of the detection body, facing the cooking container, extends out of the second bracket cover, a sealing element is arranged between the second bracket cover and the detection body, and the sealing element forms the heat insulation part;
the middle part of the heating device is provided with an opening for the penetration of the detection probe of the detection body, and the second limiting part is formed on the second bracket seat or the second bracket cover so as to be suitable for stopping the edge of the opening.
11. A control method of a cooking appliance, wherein the cooking appliance comprises a cooking container, a cover assembly and heating means for heating the cooking container, the cover assembly is suitable for defining a cooking cavity with the cooking container, the cooking appliance further comprises temperature detection means for detecting the temperature of the cooking container, and the cooking appliance obtains the air pressure in the cooking cavity according to the detection result of the temperature detection means, the control method comprises the following steps:
controlling the heating device to heat the cooking container;
controlling the temperature detection device to detect the temperature of the cooking container and acquiring the temperature rising speed of the cooking container;
and comparing the temperature rising speed with a preset value, and controlling the heating device according to a comparison result.
12. The method of claim 11, wherein the obtaining of the temperature rise rate of the cooking container comprises:
controlling the temperature detection device to detect that the temperature of the cooking container is a first temperature, and starting timing;
when the temperature detection device detects that the temperature of the cooking container reaches a second temperature, timing is finished;
calculating a temperature rise rate of the cooking container within a timed time period.
13. The method of claim 11, wherein the controlling the heating device according to the comparison result comprises:
determining that the temperature rising speed is greater than the preset value, and controlling the heating device to continue heating until the temperature of the cooking container reaches the set temperature;
and determining that the temperature rising speed is less than or equal to the preset value, calculating the heating time required by heating the cooking container to the set temperature according to the temperature rising speed, and controlling the heating device to continue heating until the time for the heating device to continue heating reaches the heating time.
14. The method for controlling a cooking appliance according to claim 13, wherein the controlling the heating device to continue heating until the temperature of the cooking container reaches a set temperature further comprises: and controlling the heating device to intermittently heat so that the temperature of the cooking container is not higher than the set temperature.
15. The method of controlling a cooking appliance according to claim 14, wherein the controlling the heating device to intermittently heat comprises: and controlling the heating device to intermittently heat until the temperature of the cooking container reaches the set temperature for the nth time.
16. The method for controlling a cooking appliance according to claim 13, wherein the controlling the heating device to continue heating until after the heating time reaches the heating time, further comprises:
determining that the current temperature of the cooking container is less than the set temperature, recalculating the heating time required for heating the cooking container to the set temperature according to the temperature rising speed, and controlling the heating device to continue heating until the time for continuing heating of the heating device reaches the recalculated heating time;
and determining that the current temperature of the cooking container is greater than or equal to the set temperature, and controlling the heating device to stop heating.
17. The method of claim 13, wherein the set temperature is 75-85 ℃.
CN202011255046.XA 2020-11-11 2020-11-11 Cooking appliance and control method thereof Active CN114468734B (en)

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